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ruby--ruby/compile.c
mame 2e24a66b88 iseq.c (finish_iseq_build): fix coverage leakage [Bug #14191] 
Before this change, coverage.so had failed to measure some multiple-line
code fragments.  This is because removing trace instructions (#14104)
changed TracePoint's lineno (new lineno), and coverage counter array was
based on old lineno.
This change initializes coverage counter array based on new lineno.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61313 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2017-12-18 02:44:36 +00:00

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/**********************************************************************
compile.c - ruby node tree -> VM instruction sequence
$Author$
created at: 04/01/01 03:42:15 JST
Copyright (C) 2004-2007 Koichi Sasada
**********************************************************************/
#include "internal.h"
#include "ruby/re.h"
#include "encindex.h"
#include <math.h>
#define USE_INSN_STACK_INCREASE 1
#include "vm_core.h"
#include "iseq.h"
#include "insns.inc"
#include "insns_info.inc"
#include "id_table.h"
#include "gc.h"
#ifdef HAVE_DLADDR
# include <dlfcn.h>
#endif
#undef RUBY_UNTYPED_DATA_WARNING
#define RUBY_UNTYPED_DATA_WARNING 0
#define ISEQ_TYPE_ONCE_GUARD ISEQ_TYPE_DEFINED_GUARD
#define FIXNUM_INC(n, i) ((n)+(INT2FIX(i)&~FIXNUM_FLAG))
#define FIXNUM_OR(n, i) ((n)|INT2FIX(i))
typedef struct iseq_link_element {
enum {
ISEQ_ELEMENT_LABEL,
ISEQ_ELEMENT_INSN,
ISEQ_ELEMENT_ADJUST,
ISEQ_ELEMENT_TRACE
} type;
struct iseq_link_element *next;
struct iseq_link_element *prev;
} LINK_ELEMENT;
typedef struct iseq_link_anchor {
LINK_ELEMENT anchor;
LINK_ELEMENT *last;
} LINK_ANCHOR;
typedef enum {
LABEL_RESCUE_NONE,
LABEL_RESCUE_BEG,
LABEL_RESCUE_END,
LABEL_RESCUE_TYPE_MAX
} LABEL_RESCUE_TYPE;
typedef struct iseq_label_data {
LINK_ELEMENT link;
int label_no;
int position;
int sc_state;
int sp;
int refcnt;
unsigned int set: 1;
unsigned int rescued: 2;
unsigned int unremovable: 1;
} LABEL;
typedef struct iseq_insn_data {
LINK_ELEMENT link;
enum ruby_vminsn_type insn_id;
int operand_size;
int sc_state;
VALUE *operands;
struct {
int line_no;
rb_event_flag_t events;
} insn_info;
} INSN;
typedef struct iseq_adjust_data {
LINK_ELEMENT link;
LABEL *label;
int line_no;
} ADJUST;
typedef struct iseq_trace_data {
LINK_ELEMENT link;
rb_event_flag_t event;
} TRACE;
struct ensure_range {
LABEL *begin;
LABEL *end;
struct ensure_range *next;
};
struct iseq_compile_data_ensure_node_stack {
const NODE *ensure_node;
struct iseq_compile_data_ensure_node_stack *prev;
struct ensure_range *erange;
};
/**
* debug function(macro) interface depend on CPDEBUG
* if it is less than 0, runtime option is in effect.
*
* debug level:
* 0: no debug output
* 1: show node type
* 2: show node important parameters
* ...
* 5: show other parameters
* 10: show every AST array
*/
#ifndef CPDEBUG
#define CPDEBUG 0
#endif
#if CPDEBUG >= 0
#define compile_debug CPDEBUG
#else
#define compile_debug ISEQ_COMPILE_DATA(iseq)->option->debug_level
#endif
#if CPDEBUG
#define compile_debug_print_indent(level) \
ruby_debug_print_indent((level), compile_debug, gl_node_level * 2)
#define debugp(header, value) (void) \
(compile_debug_print_indent(1) && \
ruby_debug_print_value(1, compile_debug, (header), (value)))
#define debugi(header, id) (void) \
(compile_debug_print_indent(1) && \
ruby_debug_print_id(1, compile_debug, (header), (id)))
#define debugp_param(header, value) (void) \
(compile_debug_print_indent(1) && \
ruby_debug_print_value(1, compile_debug, (header), (value)))
#define debugp_verbose(header, value) (void) \
(compile_debug_print_indent(2) && \
ruby_debug_print_value(2, compile_debug, (header), (value)))
#define debugp_verbose_node(header, value) (void) \
(compile_debug_print_indent(10) && \
ruby_debug_print_value(10, compile_debug, (header), (value)))
#define debug_node_start(node) ((void) \
(compile_debug_print_indent(1) && \
(ruby_debug_print_node(1, CPDEBUG, "", (const NODE *)(node)), gl_node_level)), \
gl_node_level++)
#define debug_node_end() gl_node_level --
#else
#define debugi(header, id) ((void)0)
#define debugp(header, value) ((void)0)
#define debugp_verbose(header, value) ((void)0)
#define debugp_verbose_node(header, value) ((void)0)
#define debugp_param(header, value) ((void)0)
#define debug_node_start(node) ((void)0)
#define debug_node_end() ((void)0)
#endif
#if CPDEBUG > 1 || CPDEBUG < 0
#define printf ruby_debug_printf
#define debugs if (compile_debug_print_indent(1)) ruby_debug_printf
#define debug_compile(msg, v) ((void)(compile_debug_print_indent(1) && fputs((msg), stderr)), (v))
#else
#define debugs if(0)printf
#define debug_compile(msg, v) (v)
#endif
#define LVAR_ERRINFO (1)
/* create new label */
#define NEW_LABEL(l) new_label_body(iseq, (l))
#define LABEL_FORMAT "<L%03d>"
#define NEW_ISEQ(node, name, type, line_no) \
new_child_iseq(iseq, (node), rb_fstring(name), 0, (type), (line_no))
#define NEW_CHILD_ISEQ(node, name, type, line_no) \
new_child_iseq(iseq, (node), rb_fstring(name), iseq, (type), (line_no))
/* add instructions */
#define ADD_SEQ(seq1, seq2) \
APPEND_LIST((seq1), (seq2))
/* add an instruction */
#define ADD_INSN(seq, line, insn) \
ADD_ELEM((seq), (LINK_ELEMENT *) new_insn_body(iseq, (line), BIN(insn), 0))
/* insert an instruction before prev */
#define INSERT_BEFORE_INSN(prev, line, insn) \
ELEM_INSERT_PREV(&(prev)->link, (LINK_ELEMENT *) new_insn_body(iseq, (line), BIN(insn), 0))
/* add an instruction with some operands (1, 2, 3, 5) */
#define ADD_INSN1(seq, line, insn, op1) \
ADD_ELEM((seq), (LINK_ELEMENT *) \
new_insn_body(iseq, (line), BIN(insn), 1, (VALUE)(op1)))
/* insert an instruction with some operands (1, 2, 3, 5) before prev */
#define INSERT_BEFORE_INSN1(prev, line, insn, op1) \
ELEM_INSERT_PREV(&(prev)->link, (LINK_ELEMENT *) \
new_insn_body(iseq, (line), BIN(insn), 1, (VALUE)(op1)))
#define LABEL_REF(label) ((label)->refcnt++)
/* add an instruction with label operand (alias of ADD_INSN1) */
#define ADD_INSNL(seq, line, insn, label) (ADD_INSN1(seq, line, insn, label), LABEL_REF(label))
#define ADD_INSN2(seq, line, insn, op1, op2) \
ADD_ELEM((seq), (LINK_ELEMENT *) \
new_insn_body(iseq, (line), BIN(insn), 2, (VALUE)(op1), (VALUE)(op2)))
#define ADD_INSN3(seq, line, insn, op1, op2, op3) \
ADD_ELEM((seq), (LINK_ELEMENT *) \
new_insn_body(iseq, (line), BIN(insn), 3, (VALUE)(op1), (VALUE)(op2), (VALUE)(op3)))
/* Specific Insn factory */
#define ADD_SEND(seq, line, id, argc) \
ADD_SEND_R((seq), (line), (id), (argc), NULL, (VALUE)INT2FIX(0), NULL)
#define ADD_SEND_WITH_FLAG(seq, line, id, argc, flag) \
ADD_SEND_R((seq), (line), (id), (argc), NULL, (VALUE)(flag), NULL)
#define ADD_SEND_WITH_BLOCK(seq, line, id, argc, block) \
ADD_SEND_R((seq), (line), (id), (argc), (block), (VALUE)INT2FIX(0), NULL)
#define ADD_CALL_RECEIVER(seq, line) \
ADD_INSN((seq), (line), putself)
#define ADD_CALL(seq, line, id, argc) \
ADD_SEND_R((seq), (line), (id), (argc), NULL, (VALUE)INT2FIX(VM_CALL_FCALL), NULL)
#define ADD_CALL_WITH_BLOCK(seq, line, id, argc, block) \
ADD_SEND_R((seq), (line), (id), (argc), (block), (VALUE)INT2FIX(VM_CALL_FCALL), NULL)
#define ADD_SEND_R(seq, line, id, argc, block, flag, keywords) \
ADD_ELEM((seq), (LINK_ELEMENT *) new_insn_send(iseq, (line), (id), (VALUE)(argc), (block), (VALUE)(flag), (keywords)))
#define ADD_TRACE(seq, event) \
ADD_ELEM((seq), (LINK_ELEMENT *)new_trace_body(iseq, (event)))
#define DECL_BRANCH_BASE(branches, first_line, first_column, last_line, last_column, type) \
do { \
if (ISEQ_COVERAGE(iseq) && \
ISEQ_BRANCH_COVERAGE(iseq) && \
(first_line) > 0) { \
VALUE structure = RARRAY_AREF(ISEQ_BRANCH_COVERAGE(iseq), 0); \
branches = rb_ary_tmp_new(0); \
rb_ary_push(structure, branches); \
rb_ary_push(branches, ID2SYM(rb_intern(type))); \
rb_ary_push(branches, INT2FIX(first_line)); \
rb_ary_push(branches, INT2FIX(first_column)); \
rb_ary_push(branches, INT2FIX(last_line)); \
rb_ary_push(branches, INT2FIX(last_column)); \
} \
} while (0)
#define ADD_TRACE_BRANCH_COVERAGE(seq, first_line, first_column, last_line, last_column, type, branches) \
do { \
if (ISEQ_COVERAGE(iseq) && \
ISEQ_BRANCH_COVERAGE(iseq) && \
(first_line) > 0) { \
VALUE counters = RARRAY_AREF(ISEQ_BRANCH_COVERAGE(iseq), 1); \
long counter_idx = RARRAY_LEN(counters); \
rb_ary_push(counters, INT2FIX(0)); \
rb_ary_push(branches, ID2SYM(rb_intern(type))); \
rb_ary_push(branches, INT2FIX(first_line)); \
rb_ary_push(branches, INT2FIX(first_column)); \
rb_ary_push(branches, INT2FIX(last_line)); \
rb_ary_push(branches, INT2FIX(last_column)); \
rb_ary_push(branches, INT2FIX(counter_idx)); \
ADD_INSN2((seq), (first_line), tracebranch, INT2FIX(RUBY_EVENT_COVERAGE_BRANCH), INT2FIX(counter_idx)); \
} \
} while (0)
static void iseq_add_getlocal(rb_iseq_t *iseq, LINK_ANCHOR *const seq, int line, int idx, int level);
static void iseq_add_setlocal(rb_iseq_t *iseq, LINK_ANCHOR *const seq, int line, int idx, int level);
#define ADD_GETLOCAL(seq, line, idx, level) iseq_add_getlocal(iseq, (seq), (line), (idx), (level))
#define ADD_SETLOCAL(seq, line, idx, level) iseq_add_setlocal(iseq, (seq), (line), (idx), (level))
/* add label */
#define ADD_LABEL(seq, label) \
ADD_ELEM((seq), (LINK_ELEMENT *) (label))
#define APPEND_LABEL(seq, before, label) \
APPEND_ELEM((seq), (before), (LINK_ELEMENT *) (label))
#define ADD_ADJUST(seq, line, label) \
ADD_ELEM((seq), (LINK_ELEMENT *) new_adjust_body(iseq, (label), (line)))
#define ADD_ADJUST_RESTORE(seq, label) \
ADD_ELEM((seq), (LINK_ELEMENT *) new_adjust_body(iseq, (label), -1))
#define LABEL_UNREMOVABLE(label) \
((label) ? (LABEL_REF(label), (label)->unremovable=1) : 0)
#define ADD_CATCH_ENTRY(type, ls, le, iseqv, lc) do { \
VALUE _e = rb_ary_new3(5, (type), \
(VALUE)(ls) | 1, (VALUE)(le) | 1, \
(VALUE)(iseqv), (VALUE)(lc) | 1); \
LABEL_UNREMOVABLE(ls); \
LABEL_UNREMOVABLE(le); \
LABEL_UNREMOVABLE(lc); \
rb_ary_push(ISEQ_COMPILE_DATA(iseq)->catch_table_ary, freeze_hide_obj(_e)); \
} while (0)
/* compile node */
#define COMPILE(anchor, desc, node) \
(debug_compile("== " desc "\n", \
iseq_compile_each(iseq, (anchor), (node), 0)))
/* compile node, this node's value will be popped */
#define COMPILE_POPPED(anchor, desc, node) \
(debug_compile("== " desc "\n", \
iseq_compile_each(iseq, (anchor), (node), 1)))
/* compile node, which is popped when 'popped' is true */
#define COMPILE_(anchor, desc, node, popped) \
(debug_compile("== " desc "\n", \
iseq_compile_each(iseq, (anchor), (node), (popped))))
#define COMPILE_RECV(anchor, desc, node) \
(private_recv_p(node) ? \
(ADD_INSN(anchor, nd_line(node), putself), VM_CALL_FCALL) : \
(COMPILE(anchor, desc, node->nd_recv), 0))
#define OPERAND_AT(insn, idx) \
(((INSN*)(insn))->operands[(idx)])
#define INSN_OF(insn) \
(((INSN*)(insn))->insn_id)
#define IS_INSN(link) ((link)->type == ISEQ_ELEMENT_INSN)
#define IS_LABEL(link) ((link)->type == ISEQ_ELEMENT_LABEL)
#define IS_ADJUST(link) ((link)->type == ISEQ_ELEMENT_ADJUST)
#define IS_TRACE(link) ((link)->type == ISEQ_ELEMENT_TRACE)
#define IS_INSN_ID(iobj, insn) (INSN_OF(iobj) == BIN(insn))
#define IS_NEXT_INSN_ID(link, insn) \
((link)->next && IS_INSN((link)->next) && IS_INSN_ID((link)->next, insn))
/* error */
#if CPDEBUG > 0
NORETURN(static void append_compile_error(rb_iseq_t *iseq, int line, const char *fmt, ...));
#endif
static void
append_compile_error(rb_iseq_t *iseq, int line, const char *fmt, ...)
{
VALUE err_info = ISEQ_COMPILE_DATA(iseq)->err_info;
VALUE file = rb_iseq_path(iseq);
VALUE err = err_info == Qtrue ? Qfalse : err_info;
va_list args;
va_start(args, fmt);
err = rb_syntax_error_append(err, file, line, -1, NULL, fmt, args);
va_end(args);
if (NIL_P(err_info)) {
RB_OBJ_WRITE(iseq, &ISEQ_COMPILE_DATA(iseq)->err_info, err);
rb_set_errinfo(err);
}
else if (!err_info) {
RB_OBJ_WRITE(iseq, &ISEQ_COMPILE_DATA(iseq)->err_info, Qtrue);
}
if (compile_debug) rb_exc_fatal(err);
}
#if 0
static void
compile_bug(rb_iseq_t *iseq, int line, const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
rb_report_bug_valist(rb_iseq_path(iseq), line, fmt, args);
va_end(args);
abort();
}
#endif
#define COMPILE_ERROR append_compile_error
#define ERROR_ARGS_AT(n) iseq, nd_line(n),
#define ERROR_ARGS ERROR_ARGS_AT(node)
#define EXPECT_NODE(prefix, node, ndtype, errval) \
do { \
const NODE *error_node = (node); \
enum node_type error_type = nd_type(error_node); \
if (error_type != (ndtype)) { \
COMPILE_ERROR(ERROR_ARGS_AT(error_node) \
prefix ": " #ndtype " is expected, but %s", \
ruby_node_name(error_type)); \
return errval; \
} \
} while (0)
#define EXPECT_NODE_NONULL(prefix, parent, ndtype, errval) \
do { \
COMPILE_ERROR(ERROR_ARGS_AT(parent) \
prefix ": must be " #ndtype ", but 0"); \
return errval; \
} while (0)
#define UNKNOWN_NODE(prefix, node, errval) \
do { \
const NODE *error_node = (node); \
COMPILE_ERROR(ERROR_ARGS_AT(error_node) prefix ": unknown node (%s)", \
ruby_node_name(nd_type(error_node))); \
return errval; \
} while (0)
#define COMPILE_OK 1
#define COMPILE_NG 0
#define CHECK(sub) if (!(sub)) {BEFORE_RETURN;return COMPILE_NG;}
#define BEFORE_RETURN
/* leave name uninitialized so that compiler warn if INIT_ANCHOR is
* missing */
#define DECL_ANCHOR(name) \
LINK_ANCHOR name[1] = {{{0,},}}
#define INIT_ANCHOR(name) \
(name->last = &name->anchor)
static inline VALUE
freeze_hide_obj(VALUE obj)
{
OBJ_FREEZE(obj);
RBASIC_CLEAR_CLASS(obj);
return obj;
}
#include "optinsn.inc"
#if OPT_INSTRUCTIONS_UNIFICATION
#include "optunifs.inc"
#endif
/* for debug */
#if CPDEBUG < 0
#define ISEQ_ARG iseq,
#define ISEQ_ARG_DECLARE rb_iseq_t *iseq,
#else
#define ISEQ_ARG
#define ISEQ_ARG_DECLARE
#endif
#if CPDEBUG
#define gl_node_level ISEQ_COMPILE_DATA(iseq)->node_level
#endif
static void dump_disasm_list_with_cursor(const LINK_ELEMENT *link, const LINK_ELEMENT *curr, const LABEL *dest);
static void dump_disasm_list(const LINK_ELEMENT *elem);
static int insn_data_length(INSN *iobj);
static int calc_sp_depth(int depth, INSN *iobj);
static INSN *new_insn_body(rb_iseq_t *iseq, int line_no, enum ruby_vminsn_type insn_id, int argc, ...);
static LABEL *new_label_body(rb_iseq_t *iseq, long line);
static ADJUST *new_adjust_body(rb_iseq_t *iseq, LABEL *label, int line);
static TRACE *new_trace_body(rb_iseq_t *iseq, rb_event_flag_t event);
static int iseq_compile_each(rb_iseq_t *iseq, LINK_ANCHOR *anchor, const NODE *n, int);
static int iseq_setup(rb_iseq_t *iseq, LINK_ANCHOR *const anchor);
static int iseq_optimize(rb_iseq_t *iseq, LINK_ANCHOR *const anchor);
static int iseq_insns_unification(rb_iseq_t *iseq, LINK_ANCHOR *const anchor);
static int iseq_set_local_table(rb_iseq_t *iseq, const ID *tbl);
static int iseq_set_exception_local_table(rb_iseq_t *iseq);
static int iseq_set_arguments(rb_iseq_t *iseq, LINK_ANCHOR *const anchor, const NODE *const node);
static int iseq_set_sequence_stackcaching(rb_iseq_t *iseq, LINK_ANCHOR *const anchor);
static int iseq_set_sequence(rb_iseq_t *iseq, LINK_ANCHOR *const anchor);
static int iseq_set_exception_table(rb_iseq_t *iseq);
static int iseq_set_optargs_table(rb_iseq_t *iseq);
static int compile_defined_expr(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, VALUE needstr);
/*
* To make Array to LinkedList, use link_anchor
*/
static void
verify_list(ISEQ_ARG_DECLARE const char *info, LINK_ANCHOR *const anchor)
{
#if CPDEBUG
int flag = 0;
LINK_ELEMENT *list, *plist;
if (!compile_debug) return;
list = anchor->anchor.next;
plist = &anchor->anchor;
while (list) {
if (plist != list->prev) {
flag += 1;
}
plist = list;
list = list->next;
}
if (anchor->last != plist && anchor->last != 0) {
flag |= 0x70000;
}
if (flag != 0) {
rb_bug("list verify error: %08x (%s)", flag, info);
}
#endif
}
#if CPDEBUG < 0
#define verify_list(info, anchor) verify_list(iseq, (info), (anchor))
#endif
/*
* elem1, elem2 => elem1, elem2, elem
*/
static void
ADD_ELEM(ISEQ_ARG_DECLARE LINK_ANCHOR *const anchor, LINK_ELEMENT *elem)
{
elem->prev = anchor->last;
anchor->last->next = elem;
anchor->last = elem;
verify_list("add", anchor);
}
/*
* elem1, before, elem2 => elem1, before, elem, elem2
*/
static void
APPEND_ELEM(ISEQ_ARG_DECLARE LINK_ANCHOR *const anchor, LINK_ELEMENT *before, LINK_ELEMENT *elem)
{
elem->prev = before;
elem->next = before->next;
elem->next->prev = elem;
before->next = elem;
if (before == anchor->last) anchor->last = elem;
verify_list("add", anchor);
}
#if CPDEBUG < 0
#define ADD_ELEM(anchor, elem) ADD_ELEM(iseq, (anchor), (elem))
#define APPEND_ELEM(anchor, before, elem) APPEND_ELEM(iseq, (anchor), (before), (elem))
#endif
static int
iseq_add_mark_object(const rb_iseq_t *iseq, VALUE v)
{
if (!SPECIAL_CONST_P(v)) {
rb_iseq_add_mark_object(iseq, v);
}
return COMPILE_OK;
}
static int
iseq_add_mark_object_compile_time(const rb_iseq_t *iseq, VALUE v)
{
if (!SPECIAL_CONST_P(v)) {
rb_ary_push(ISEQ_COMPILE_DATA(iseq)->mark_ary, v);
}
return COMPILE_OK;
}
static inline VALUE
freeze_literal(rb_iseq_t *iseq, VALUE lit)
{
lit = rb_fstring(lit);
rb_ary_push(ISEQ_COMPILE_DATA(iseq)->mark_ary, lit);
return lit;
}
static int
validate_label(st_data_t name, st_data_t label, st_data_t arg)
{
rb_iseq_t *iseq = (rb_iseq_t *)arg;
LABEL *lobj = (LABEL *)label;
if (!lobj->link.next) {
do {
COMPILE_ERROR(iseq, lobj->position,
"%"PRIsVALUE": undefined label",
rb_sym2str((VALUE)name));
} while (0);
}
return ST_CONTINUE;
}
static void
validate_labels(rb_iseq_t *iseq, st_table *labels_table)
{
st_foreach(labels_table, validate_label, (st_data_t)iseq);
st_free_table(labels_table);
}
VALUE
rb_iseq_compile_node(rb_iseq_t *iseq, const NODE *node)
{
DECL_ANCHOR(ret);
INIT_ANCHOR(ret);
if (node == 0) {
COMPILE(ret, "nil", node);
iseq_set_local_table(iseq, 0);
}
else if (imemo_type_p((VALUE)node, imemo_ifunc)) {
const struct vm_ifunc *ifunc = (struct vm_ifunc *)node;
/* user callback */
(*ifunc->func)(iseq, ret, ifunc->data);
}
/* assume node is T_NODE */
else if (nd_type(node) == NODE_SCOPE) {
/* iseq type of top, method, class, block */
iseq_set_local_table(iseq, node->nd_tbl);
iseq_set_arguments(iseq, ret, node->nd_args);
switch (iseq->body->type) {
case ISEQ_TYPE_BLOCK:
{
LABEL *start = ISEQ_COMPILE_DATA(iseq)->start_label = NEW_LABEL(0);
LABEL *end = ISEQ_COMPILE_DATA(iseq)->end_label = NEW_LABEL(0);
start->rescued = LABEL_RESCUE_BEG;
end->rescued = LABEL_RESCUE_END;
ADD_TRACE(ret, RUBY_EVENT_B_CALL);
ADD_INSN (ret, FIX2INT(iseq->body->location.first_lineno), nop);
ADD_LABEL(ret, start);
CHECK(COMPILE(ret, "block body", node->nd_body));
ADD_LABEL(ret, end);
ADD_TRACE(ret, RUBY_EVENT_B_RETURN);
/* wide range catch handler must put at last */
ADD_CATCH_ENTRY(CATCH_TYPE_REDO, start, end, NULL, start);
ADD_CATCH_ENTRY(CATCH_TYPE_NEXT, start, end, NULL, end);
break;
}
case ISEQ_TYPE_CLASS:
{
ADD_TRACE(ret, RUBY_EVENT_CLASS);
CHECK(COMPILE(ret, "scoped node", node->nd_body));
ADD_TRACE(ret, RUBY_EVENT_END);
break;
}
case ISEQ_TYPE_METHOD:
{
ADD_TRACE(ret, RUBY_EVENT_CALL);
CHECK(COMPILE(ret, "scoped node", node->nd_body));
ADD_TRACE(ret, RUBY_EVENT_RETURN);
break;
}
default: {
CHECK(COMPILE(ret, "scoped node", node->nd_body));
break;
}
}
}
else {
const char *m;
#define INVALID_ISEQ_TYPE(type) \
ISEQ_TYPE_##type: m = #type; goto invalid_iseq_type
switch (iseq->body->type) {
case INVALID_ISEQ_TYPE(METHOD);
case INVALID_ISEQ_TYPE(CLASS);
case INVALID_ISEQ_TYPE(BLOCK);
case INVALID_ISEQ_TYPE(EVAL);
case INVALID_ISEQ_TYPE(MAIN);
case INVALID_ISEQ_TYPE(TOP);
#undef INVALID_ISEQ_TYPE /* invalid iseq types end */
case ISEQ_TYPE_RESCUE:
iseq_set_exception_local_table(iseq);
CHECK(COMPILE(ret, "rescue", node));
break;
case ISEQ_TYPE_ENSURE:
iseq_set_exception_local_table(iseq);
CHECK(COMPILE_POPPED(ret, "ensure", node));
break;
case ISEQ_TYPE_DEFINED_GUARD:
iseq_set_exception_local_table(iseq);
CHECK(COMPILE(ret, "defined guard", node));
break;
default:
COMPILE_ERROR(ERROR_ARGS "unknown scope: %d", iseq->body->type);
return COMPILE_NG;
invalid_iseq_type:
COMPILE_ERROR(ERROR_ARGS "compile/ISEQ_TYPE_%s should not be reached", m);
return COMPILE_NG;
}
}
if (iseq->body->type == ISEQ_TYPE_RESCUE || iseq->body->type == ISEQ_TYPE_ENSURE) {
ADD_GETLOCAL(ret, 0, LVAR_ERRINFO, 0);
ADD_INSN1(ret, 0, throw, INT2FIX(0) /* continue throw */ );
}
else {
ADD_INSN(ret, ISEQ_COMPILE_DATA(iseq)->last_line, leave);
}
#if SUPPORT_JOKE
if (ISEQ_COMPILE_DATA(iseq)->labels_table) {
st_table *labels_table = ISEQ_COMPILE_DATA(iseq)->labels_table;
ISEQ_COMPILE_DATA(iseq)->labels_table = 0;
validate_labels(iseq, labels_table);
}
#endif
return iseq_setup(iseq, ret);
}
int
rb_iseq_translate_threaded_code(rb_iseq_t *iseq)
{
#if OPT_DIRECT_THREADED_CODE || OPT_CALL_THREADED_CODE
const void * const *table = rb_vm_get_insns_address_table();
unsigned int i;
VALUE *encoded = (VALUE *)iseq->body->iseq_encoded;
for (i = 0; i < iseq->body->iseq_size; /* */ ) {
int insn = (int)iseq->body->iseq_encoded[i];
int len = insn_len(insn);
encoded[i] = (VALUE)table[insn];
i += len;
}
#endif
return COMPILE_OK;
}
#if OPT_DIRECT_THREADED_CODE || OPT_CALL_THREADED_CODE
static int
rb_vm_insn_addr2insn(const void *addr) /* cold path */
{
int insn;
const void * const *table = rb_vm_get_insns_address_table();
for (insn = 0; insn < VM_INSTRUCTION_SIZE; insn++) {
if (table[insn] == addr) {
return insn;
}
}
rb_bug("rb_vm_insn_addr2insn: invalid insn address: %p", addr);
}
#endif
VALUE *
rb_iseq_original_iseq(const rb_iseq_t *iseq) /* cold path */
{
VALUE *original_code;
if (ISEQ_ORIGINAL_ISEQ(iseq)) return ISEQ_ORIGINAL_ISEQ(iseq);
original_code = ISEQ_ORIGINAL_ISEQ_ALLOC(iseq, iseq->body->iseq_size);
MEMCPY(original_code, iseq->body->iseq_encoded, VALUE, iseq->body->iseq_size);
#if OPT_DIRECT_THREADED_CODE || OPT_CALL_THREADED_CODE
{
unsigned int i;
for (i = 0; i < iseq->body->iseq_size; /* */ ) {
const void *addr = (const void *)original_code[i];
const int insn = rb_vm_insn_addr2insn(addr);
original_code[i] = insn;
i += insn_len(insn);
}
}
#endif
return original_code;
}
/*********************************************/
/* definition of data structure for compiler */
/*********************************************/
/*
* On 32-bit SPARC, GCC by default generates SPARC V7 code that may require
* 8-byte word alignment. On the other hand, Oracle Solaris Studio seems to
* generate SPARCV8PLUS code with unaligned memory access instructions.
* That is why the STRICT_ALIGNMENT is defined only with GCC.
*/
#if defined(__sparc) && SIZEOF_VOIDP == 4 && defined(__GNUC__)
#define STRICT_ALIGNMENT
#endif
#ifdef STRICT_ALIGNMENT
#if defined(HAVE_TRUE_LONG_LONG) && SIZEOF_LONG_LONG > SIZEOF_VALUE
#define ALIGNMENT_SIZE SIZEOF_LONG_LONG
#else
#define ALIGNMENT_SIZE SIZEOF_VALUE
#endif
#define PADDING_SIZE_MAX ((size_t)((ALIGNMENT_SIZE) - 1))
#define ALIGNMENT_SIZE_MASK PADDING_SIZE_MAX
/* Note: ALIGNMENT_SIZE == (2 ** N) is expected. */
#else
#define PADDING_SIZE_MAX 0
#endif /* STRICT_ALIGNMENT */
#ifdef STRICT_ALIGNMENT
/* calculate padding size for aligned memory access */
static size_t
calc_padding(void *ptr, size_t size)
{
size_t mis;
size_t padding = 0;
mis = (size_t)ptr & ALIGNMENT_SIZE_MASK;
if (mis > 0) {
padding = ALIGNMENT_SIZE - mis;
}
/*
* On 32-bit sparc or equivalents, when a single VALUE is requested
* and padding == sizeof(VALUE), it is clear that no padding is needed.
*/
#if ALIGNMENT_SIZE > SIZEOF_VALUE
if (size == sizeof(VALUE) && padding == sizeof(VALUE)) {
padding = 0;
}
#endif
return padding;
}
#endif /* STRICT_ALIGNMENT */
static void *
compile_data_alloc(rb_iseq_t *iseq, size_t size)
{
void *ptr = 0;
struct iseq_compile_data_storage *storage =
ISEQ_COMPILE_DATA(iseq)->storage_current;
#ifdef STRICT_ALIGNMENT
size_t padding = calc_padding((void *)&storage->buff[storage->pos], size);
#else
const size_t padding = 0; /* expected to be optimized by compiler */
#endif /* STRICT_ALIGNMENT */
if (size >= INT_MAX - padding) rb_memerror();
if (storage->pos + size + padding > storage->size) {
unsigned int alloc_size = storage->size;
while (alloc_size < size + PADDING_SIZE_MAX) {
if (alloc_size >= INT_MAX / 2) rb_memerror();
alloc_size *= 2;
}
storage->next = (void *)ALLOC_N(char, alloc_size +
SIZEOF_ISEQ_COMPILE_DATA_STORAGE);
storage = ISEQ_COMPILE_DATA(iseq)->storage_current = storage->next;
storage->next = 0;
storage->pos = 0;
storage->size = alloc_size;
#ifdef STRICT_ALIGNMENT
padding = calc_padding((void *)&storage->buff[storage->pos], size);
#endif /* STRICT_ALIGNMENT */
}
#ifdef STRICT_ALIGNMENT
storage->pos += (int)padding;
#endif /* STRICT_ALIGNMENT */
ptr = (void *)&storage->buff[storage->pos];
storage->pos += (int)size;
return ptr;
}
static INSN *
compile_data_alloc_insn(rb_iseq_t *iseq)
{
return (INSN *)compile_data_alloc(iseq, sizeof(INSN));
}
static LABEL *
compile_data_alloc_label(rb_iseq_t *iseq)
{
return (LABEL *)compile_data_alloc(iseq, sizeof(LABEL));
}
static ADJUST *
compile_data_alloc_adjust(rb_iseq_t *iseq)
{
return (ADJUST *)compile_data_alloc(iseq, sizeof(ADJUST));
}
static TRACE *
compile_data_alloc_trace(rb_iseq_t *iseq)
{
return (TRACE *)compile_data_alloc(iseq, sizeof(TRACE));
}
/*
* elem1, elemX => elem1, elem2, elemX
*/
static void
ELEM_INSERT_NEXT(LINK_ELEMENT *elem1, LINK_ELEMENT *elem2)
{
elem2->next = elem1->next;
elem2->prev = elem1;
elem1->next = elem2;
if (elem2->next) {
elem2->next->prev = elem2;
}
}
/*
* elem1, elemX => elemX, elem2, elem1
*/
static void
ELEM_INSERT_PREV(LINK_ELEMENT *elem1, LINK_ELEMENT *elem2)
{
elem2->prev = elem1->prev;
elem2->next = elem1;
elem1->prev = elem2;
if (elem2->prev) {
elem2->prev->next = elem2;
}
}
/*
* elemX, elem1, elemY => elemX, elem2, elemY
*/
static void
ELEM_REPLACE(LINK_ELEMENT *elem1, LINK_ELEMENT *elem2)
{
elem2->prev = elem1->prev;
elem2->next = elem1->next;
if (elem1->prev) {
elem1->prev->next = elem2;
}
if (elem1->next) {
elem1->next->prev = elem2;
}
}
static void
ELEM_REMOVE(LINK_ELEMENT *elem)
{
elem->prev->next = elem->next;
if (elem->next) {
elem->next->prev = elem->prev;
}
}
static LINK_ELEMENT *
FIRST_ELEMENT(const LINK_ANCHOR *const anchor)
{
return anchor->anchor.next;
}
static LINK_ELEMENT *
LAST_ELEMENT(LINK_ANCHOR *const anchor)
{
return anchor->last;
}
static LINK_ELEMENT *
POP_ELEMENT(ISEQ_ARG_DECLARE LINK_ANCHOR *const anchor)
{
LINK_ELEMENT *elem = anchor->last;
anchor->last = anchor->last->prev;
anchor->last->next = 0;
verify_list("pop", anchor);
return elem;
}
#if CPDEBUG < 0
#define POP_ELEMENT(anchor) POP_ELEMENT(iseq, (anchor))
#endif
static LINK_ELEMENT *
ELEM_FIRST_INSN(LINK_ELEMENT *elem)
{
while (elem) {
switch (elem->type) {
case ISEQ_ELEMENT_INSN:
case ISEQ_ELEMENT_ADJUST:
return elem;
default:
elem = elem->next;
}
}
return NULL;
}
static int
LIST_INSN_SIZE_ONE(const LINK_ANCHOR *const anchor)
{
LINK_ELEMENT *first_insn = ELEM_FIRST_INSN(FIRST_ELEMENT(anchor));
if (first_insn != NULL &&
ELEM_FIRST_INSN(first_insn->next) == NULL) {
return TRUE;
}
else {
return FALSE;
}
}
static int
LIST_INSN_SIZE_ZERO(const LINK_ANCHOR *const anchor)
{
if (ELEM_FIRST_INSN(FIRST_ELEMENT(anchor)) == NULL) {
return TRUE;
}
else {
return FALSE;
}
}
/*
* anc1: e1, e2, e3
* anc2: e4, e5
*#=>
* anc1: e1, e2, e3, e4, e5
* anc2: e4, e5 (broken)
*/
static void
APPEND_LIST(ISEQ_ARG_DECLARE LINK_ANCHOR *const anc1, LINK_ANCHOR *const anc2)
{
if (anc2->anchor.next) {
anc1->last->next = anc2->anchor.next;
anc2->anchor.next->prev = anc1->last;
anc1->last = anc2->last;
}
verify_list("append", anc1);
}
#if CPDEBUG < 0
#define APPEND_LIST(anc1, anc2) APPEND_LIST(iseq, (anc1), (anc2))
#endif
/*
* anc1: e1, e2, e3
* anc2: e4, e5
*#=>
* anc1: e4, e5, e1, e2, e3
* anc2: e4, e5 (broken)
*/
static void
INSERT_LIST(ISEQ_ARG_DECLARE LINK_ANCHOR *const anc1, LINK_ANCHOR *const anc2)
{
if (anc2->anchor.next) {
LINK_ELEMENT *first = anc1->anchor.next;
anc1->anchor.next = anc2->anchor.next;
anc1->anchor.next->prev = &anc1->anchor;
anc2->last->next = first;
if (first) {
first->prev = anc2->last;
}
else {
anc1->last = anc2->last;
}
}
verify_list("append", anc1);
}
#if CPDEBUG < 0
#define INSERT_LIST(anc1, anc2) INSERT_LIST(iseq, (anc1), (anc2))
#endif
#if CPDEBUG && 0
static void
debug_list(ISEQ_ARG_DECLARE LINK_ANCHOR *const anchor)
{
LINK_ELEMENT *list = FIRST_ELEMENT(anchor);
printf("----\n");
printf("anch: %p, frst: %p, last: %p\n", &anchor->anchor,
anchor->anchor.next, anchor->last);
while (list) {
printf("curr: %p, next: %p, prev: %p, type: %d\n", list, list->next,
list->prev, FIX2INT(list->type));
list = list->next;
}
printf("----\n");
dump_disasm_list(anchor->anchor.next);
verify_list("debug list", anchor);
}
#if CPDEBUG < 0
#define debug_list(anc) debug_list(iseq, (anc))
#endif
#else
#define debug_list(anc) ((void)0)
#endif
static TRACE *
new_trace_body(rb_iseq_t *iseq, rb_event_flag_t event)
{
TRACE *trace = compile_data_alloc_trace(iseq);
trace->link.type = ISEQ_ELEMENT_TRACE;
trace->link.next = NULL;
trace->event = event;
return trace;
}
static LABEL *
new_label_body(rb_iseq_t *iseq, long line)
{
LABEL *labelobj = compile_data_alloc_label(iseq);
labelobj->link.type = ISEQ_ELEMENT_LABEL;
labelobj->link.next = 0;
labelobj->label_no = ISEQ_COMPILE_DATA(iseq)->label_no++;
labelobj->sc_state = 0;
labelobj->sp = -1;
labelobj->refcnt = 0;
labelobj->set = 0;
labelobj->rescued = LABEL_RESCUE_NONE;
labelobj->unremovable = 0;
return labelobj;
}
static ADJUST *
new_adjust_body(rb_iseq_t *iseq, LABEL *label, int line)
{
ADJUST *adjust = compile_data_alloc_adjust(iseq);
adjust->link.type = ISEQ_ELEMENT_ADJUST;
adjust->link.next = 0;
adjust->label = label;
adjust->line_no = line;
LABEL_UNREMOVABLE(label);
return adjust;
}
static INSN *
new_insn_core(rb_iseq_t *iseq, int line_no,
int insn_id, int argc, VALUE *argv)
{
INSN *iobj = compile_data_alloc_insn(iseq);
/* printf("insn_id: %d, line: %d\n", insn_id, line_no); */
iobj->link.type = ISEQ_ELEMENT_INSN;
iobj->link.next = 0;
iobj->insn_id = insn_id;
iobj->insn_info.line_no = line_no;
iobj->insn_info.events = 0;
iobj->operands = argv;
iobj->operand_size = argc;
iobj->sc_state = 0;
return iobj;
}
static INSN *
new_insn_body(rb_iseq_t *iseq, int line_no, enum ruby_vminsn_type insn_id, int argc, ...)
{
VALUE *operands = 0;
va_list argv;
if (argc > 0) {
int i;
va_init_list(argv, argc);
operands = (VALUE *)compile_data_alloc(iseq, sizeof(VALUE) * argc);
for (i = 0; i < argc; i++) {
VALUE v = va_arg(argv, VALUE);
operands[i] = v;
}
va_end(argv);
}
return new_insn_core(iseq, line_no, insn_id, argc, operands);
}
static struct rb_call_info *
new_callinfo(rb_iseq_t *iseq, ID mid, int argc, unsigned int flag, struct rb_call_info_kw_arg *kw_arg, int has_blockiseq)
{
size_t size = kw_arg != NULL ? sizeof(struct rb_call_info_with_kwarg) : sizeof(struct rb_call_info);
struct rb_call_info *ci = (struct rb_call_info *)compile_data_alloc(iseq, size);
struct rb_call_info_with_kwarg *ci_kw = (struct rb_call_info_with_kwarg *)ci;
ci->mid = mid;
ci->flag = flag;
ci->orig_argc = argc;
if (kw_arg) {
ci->flag |= VM_CALL_KWARG;
ci_kw->kw_arg = kw_arg;
ci->orig_argc += kw_arg->keyword_len;
iseq->body->ci_kw_size++;
}
else {
iseq->body->ci_size++;
}
if (!(ci->flag & (VM_CALL_ARGS_SPLAT | VM_CALL_ARGS_BLOCKARG | VM_CALL_KW_SPLAT)) &&
kw_arg == NULL && !has_blockiseq) {
ci->flag |= VM_CALL_ARGS_SIMPLE;
}
return ci;
}
static INSN *
new_insn_send(rb_iseq_t *iseq, int line_no, ID id, VALUE argc, const rb_iseq_t *blockiseq, VALUE flag, struct rb_call_info_kw_arg *keywords)
{
VALUE *operands = (VALUE *)compile_data_alloc(iseq, sizeof(VALUE) * 3);
operands[0] = (VALUE)new_callinfo(iseq, id, FIX2INT(argc), FIX2INT(flag), keywords, blockiseq != NULL);
operands[1] = Qfalse; /* cache */
operands[2] = (VALUE)blockiseq;
return new_insn_core(iseq, line_no, BIN(send), 3, operands);
}
static rb_iseq_t *
new_child_iseq(rb_iseq_t *iseq, const NODE *const node,
VALUE name, const rb_iseq_t *parent, enum iseq_type type, int line_no)
{
rb_iseq_t *ret_iseq;
debugs("[new_child_iseq]> ---------------------------------------\n");
ret_iseq = rb_iseq_new_with_opt(node, name,
rb_iseq_path(iseq), rb_iseq_realpath(iseq),
INT2FIX(line_no), parent, type, ISEQ_COMPILE_DATA(iseq)->option);
debugs("[new_child_iseq]< ---------------------------------------\n");
iseq_add_mark_object(iseq, (VALUE)ret_iseq);
return ret_iseq;
}
static int
iseq_setup(rb_iseq_t *iseq, LINK_ANCHOR *const anchor)
{
if (RTEST(ISEQ_COMPILE_DATA(iseq)->err_info))
return COMPILE_NG;
/* debugs("[compile step 2] (iseq_array_to_linkedlist)\n"); */
if (compile_debug > 5)
dump_disasm_list(FIRST_ELEMENT(anchor));
debugs("[compile step 3.1 (iseq_optimize)]\n");
iseq_optimize(iseq, anchor);
if (compile_debug > 5)
dump_disasm_list(FIRST_ELEMENT(anchor));
if (ISEQ_COMPILE_DATA(iseq)->option->instructions_unification) {
debugs("[compile step 3.2 (iseq_insns_unification)]\n");
iseq_insns_unification(iseq, anchor);
if (compile_debug > 5)
dump_disasm_list(FIRST_ELEMENT(anchor));
}
if (ISEQ_COMPILE_DATA(iseq)->option->stack_caching) {
debugs("[compile step 3.3 (iseq_set_sequence_stackcaching)]\n");
iseq_set_sequence_stackcaching(iseq, anchor);
if (compile_debug > 5)
dump_disasm_list(FIRST_ELEMENT(anchor));
}
debugs("[compile step 4.1 (iseq_set_sequence)]\n");
if (!iseq_set_sequence(iseq, anchor)) return COMPILE_NG;
if (compile_debug > 5)
dump_disasm_list(FIRST_ELEMENT(anchor));
debugs("[compile step 4.2 (iseq_set_exception_table)]\n");
if (!iseq_set_exception_table(iseq)) return COMPILE_NG;
debugs("[compile step 4.3 (set_optargs_table)] \n");
if (!iseq_set_optargs_table(iseq)) return COMPILE_NG;
debugs("[compile step 5 (iseq_translate_threaded_code)] \n");
if (!rb_iseq_translate_threaded_code(iseq)) return COMPILE_NG;
if (compile_debug > 1) {
VALUE str = rb_iseq_disasm(iseq);
printf("%s\n", StringValueCStr(str));
}
debugs("[compile step: finish]\n");
return COMPILE_OK;
}
static int
iseq_set_exception_local_table(rb_iseq_t *iseq)
{
/* TODO: every id table is same -> share it.
* Current problem is iseq_free().
*/
ID id_dollar_bang;
ID *ids = (ID *)ALLOC_N(ID, 1);
CONST_ID(id_dollar_bang, "#$!");
iseq->body->local_table_size = 1;
ids[0] = id_dollar_bang;
iseq->body->local_table = ids;
return COMPILE_OK;
}
static int
get_lvar_level(const rb_iseq_t *iseq)
{
int lev = 0;
while (iseq != iseq->body->local_iseq) {
lev++;
iseq = iseq->body->parent_iseq;
}
return lev;
}
static int
get_dyna_var_idx_at_raw(const rb_iseq_t *iseq, ID id)
{
unsigned int i;
for (i = 0; i < iseq->body->local_table_size; i++) {
if (iseq->body->local_table[i] == id) {
return (int)i;
}
}
return -1;
}
static int
get_local_var_idx(const rb_iseq_t *iseq, ID id)
{
int idx = get_dyna_var_idx_at_raw(iseq->body->local_iseq, id);
if (idx < 0) {
rb_bug("get_local_var_idx: %d", idx);
}
return idx;
}
static int
get_dyna_var_idx(const rb_iseq_t *iseq, ID id, int *level, int *ls)
{
int lv = 0, idx = -1;
while (iseq) {
idx = get_dyna_var_idx_at_raw(iseq, id);
if (idx >= 0) {
break;
}
iseq = iseq->body->parent_iseq;
lv++;
}
if (idx < 0) {
rb_bug("get_dyna_var_idx: -1");
}
*level = lv;
*ls = iseq->body->local_table_size;
return idx;
}
static int
iseq_local_block_param_p(const rb_iseq_t *iseq, unsigned int idx, unsigned int level)
{
while (level > 0) {
iseq = iseq->body->parent_iseq;
level--;
}
if (iseq->body->local_iseq == iseq && /* local variables */
iseq->body->param.flags.has_block &&
iseq->body->local_table_size - iseq->body->param.block_start == idx) {
return TRUE;
}
else {
return FALSE;
}
}
static void
iseq_add_getlocal(rb_iseq_t *iseq, LINK_ANCHOR *const seq, int line, int idx, int level)
{
if (iseq_local_block_param_p(iseq, idx, level)) {
ADD_INSN2(seq, line, getblockparam, INT2FIX((idx) + VM_ENV_DATA_SIZE - 1), INT2FIX(level));
}
else {
ADD_INSN2(seq, line, getlocal, INT2FIX((idx) + VM_ENV_DATA_SIZE - 1), INT2FIX(level));
}
}
static void
iseq_add_setlocal(rb_iseq_t *iseq, LINK_ANCHOR *const seq, int line, int idx, int level)
{
if (iseq_local_block_param_p(iseq, idx, level)) {
ADD_INSN2(seq, line, setblockparam, INT2FIX((idx) + VM_ENV_DATA_SIZE - 1), INT2FIX(level));
}
else {
ADD_INSN2(seq, line, setlocal, INT2FIX((idx) + VM_ENV_DATA_SIZE - 1), INT2FIX(level));
}
}
static void
iseq_calc_param_size(rb_iseq_t *iseq)
{
if (iseq->body->param.flags.has_opt ||
iseq->body->param.flags.has_post ||
iseq->body->param.flags.has_rest ||
iseq->body->param.flags.has_block ||
iseq->body->param.flags.has_kw ||
iseq->body->param.flags.has_kwrest) {
if (iseq->body->param.flags.has_block) {
iseq->body->param.size = iseq->body->param.block_start + 1;
}
else if (iseq->body->param.flags.has_kwrest) {
iseq->body->param.size = iseq->body->param.keyword->rest_start + 1;
}
else if (iseq->body->param.flags.has_kw) {
iseq->body->param.size = iseq->body->param.keyword->bits_start + 1;
}
else if (iseq->body->param.flags.has_post) {
iseq->body->param.size = iseq->body->param.post_start + iseq->body->param.post_num;
}
else if (iseq->body->param.flags.has_rest) {
iseq->body->param.size = iseq->body->param.rest_start + 1;
}
else if (iseq->body->param.flags.has_opt) {
iseq->body->param.size = iseq->body->param.lead_num + iseq->body->param.opt_num;
}
else {
rb_bug("unreachable");
}
}
else {
iseq->body->param.size = iseq->body->param.lead_num;
}
}
static void
iseq_set_arguments_keywords(rb_iseq_t *iseq, LINK_ANCHOR *const optargs,
const struct rb_args_info *args)
{
const NODE *node = args->kw_args;
struct rb_iseq_param_keyword *keyword;
const VALUE default_values = rb_ary_tmp_new(1);
const VALUE complex_mark = rb_str_tmp_new(0);
int kw = 0, rkw = 0, di = 0, i;
iseq->body->param.flags.has_kw = TRUE;
iseq->body->param.keyword = keyword = ZALLOC_N(struct rb_iseq_param_keyword, 1);
keyword->bits_start = get_dyna_var_idx_at_raw(iseq, args->kw_rest_arg->nd_cflag);
while (node) {
const NODE *val_node = node->nd_body->nd_value;
VALUE dv;
if (val_node == (const NODE *)-1) {
++rkw;
}
else {
switch (nd_type(val_node)) {
case NODE_LIT:
dv = val_node->nd_lit;
iseq_add_mark_object(iseq, dv);
break;
case NODE_NIL:
dv = Qnil;
break;
case NODE_TRUE:
dv = Qtrue;
break;
case NODE_FALSE:
dv = Qfalse;
break;
default:
COMPILE_POPPED(optargs, "kwarg", node); /* nd_type(node) == NODE_KW_ARG */
dv = complex_mark;
}
keyword->num = ++di;
rb_ary_push(default_values, dv);
}
kw++;
node = node->nd_next;
}
keyword->num = kw;
if (args->kw_rest_arg->nd_vid != 0) {
keyword->rest_start = get_dyna_var_idx_at_raw(iseq, args->kw_rest_arg->nd_vid);
iseq->body->param.flags.has_kwrest = TRUE;
}
keyword->required_num = rkw;
keyword->table = &iseq->body->local_table[keyword->bits_start - keyword->num];
{
VALUE *dvs = ALLOC_N(VALUE, RARRAY_LEN(default_values));
for (i = 0; i < RARRAY_LEN(default_values); i++) {
VALUE dv = RARRAY_AREF(default_values, i);
if (dv == complex_mark) dv = Qundef;
dvs[i] = dv;
}
keyword->default_values = dvs;
}
}
static int
iseq_set_arguments(rb_iseq_t *iseq, LINK_ANCHOR *const optargs, const NODE *const node_args)
{
debugs("iseq_set_arguments: %s\n", node_args ? "" : "0");
if (node_args) {
struct rb_args_info *args = node_args->nd_ainfo;
ID rest_id = 0;
int last_comma = 0;
ID block_id = 0;
EXPECT_NODE("iseq_set_arguments", node_args, NODE_ARGS, COMPILE_NG);
iseq->body->param.lead_num = (int)args->pre_args_num;
if (iseq->body->param.lead_num > 0) iseq->body->param.flags.has_lead = TRUE;
debugs(" - argc: %d\n", iseq->body->param.lead_num);
rest_id = args->rest_arg;
if (rest_id == 1) {
last_comma = 1;
rest_id = 0;
}
block_id = args->block_arg;
if (args->first_post_arg) {
iseq->body->param.post_start = get_dyna_var_idx_at_raw(iseq, args->first_post_arg);
iseq->body->param.post_num = args->post_args_num;
iseq->body->param.flags.has_post = TRUE;
}
if (args->opt_args) {
const NODE *node = args->opt_args;
LABEL *label;
VALUE labels = rb_ary_tmp_new(1);
VALUE *opt_table;
int i = 0, j;
while (node) {
label = NEW_LABEL(nd_line(node));
rb_ary_push(labels, (VALUE)label | 1);
ADD_LABEL(optargs, label);
COMPILE_POPPED(optargs, "optarg", node->nd_body);
node = node->nd_next;
i += 1;
}
/* last label */
label = NEW_LABEL(nd_line(node_args));
rb_ary_push(labels, (VALUE)label | 1);
ADD_LABEL(optargs, label);
opt_table = ALLOC_N(VALUE, i+1);
MEMCPY(opt_table, RARRAY_CONST_PTR(labels), VALUE, i+1);
for (j = 0; j < i+1; j++) {
opt_table[j] &= ~1;
}
rb_ary_clear(labels);
iseq->body->param.flags.has_opt = TRUE;
iseq->body->param.opt_num = i;
iseq->body->param.opt_table = opt_table;
}
if (args->kw_args) {
iseq_set_arguments_keywords(iseq, optargs, args);
}
else if (args->kw_rest_arg) {
struct rb_iseq_param_keyword *keyword = ZALLOC_N(struct rb_iseq_param_keyword, 1);
keyword->rest_start = get_dyna_var_idx_at_raw(iseq, args->kw_rest_arg->nd_vid);
iseq->body->param.keyword = keyword;
iseq->body->param.flags.has_kwrest = TRUE;
}
if (args->pre_init) { /* m_init */
COMPILE_POPPED(optargs, "init arguments (m)", args->pre_init);
}
if (args->post_init) { /* p_init */
COMPILE_POPPED(optargs, "init arguments (p)", args->post_init);
}
if (rest_id) {
iseq->body->param.rest_start = get_dyna_var_idx_at_raw(iseq, rest_id);
iseq->body->param.flags.has_rest = TRUE;
assert(iseq->body->param.rest_start != -1);
if (iseq->body->param.post_start == 0) { /* TODO: why that? */
iseq->body->param.post_start = iseq->body->param.rest_start + 1;
}
}
if (block_id) {
iseq->body->param.block_start = get_dyna_var_idx_at_raw(iseq, block_id);
iseq->body->param.flags.has_block = TRUE;
}
iseq_calc_param_size(iseq);
if (iseq->body->type == ISEQ_TYPE_BLOCK) {
if (iseq->body->param.flags.has_opt == FALSE &&
iseq->body->param.flags.has_post == FALSE &&
iseq->body->param.flags.has_rest == FALSE &&
iseq->body->param.flags.has_kw == FALSE &&
iseq->body->param.flags.has_kwrest == FALSE) {
if (iseq->body->param.lead_num == 1 && last_comma == 0) {
/* {|a|} */
iseq->body->param.flags.ambiguous_param0 = TRUE;
}
}
}
}
return COMPILE_OK;
}
static int
iseq_set_local_table(rb_iseq_t *iseq, const ID *tbl)
{
unsigned int size;
if (tbl) {
size = (unsigned int)*tbl;
tbl++;
}
else {
size = 0;
}
if (size > 0) {
ID *ids = (ID *)ALLOC_N(ID, size);
MEMCPY(ids, tbl, ID, size);
iseq->body->local_table = ids;
}
iseq->body->local_table_size = size;
debugs("iseq_set_local_table: %u\n", iseq->body->local_table_size);
return COMPILE_OK;
}
static int
cdhash_cmp(VALUE val, VALUE lit)
{
if (val == lit) return 0;
if (SPECIAL_CONST_P(lit)) {
return val != lit;
}
if (SPECIAL_CONST_P(val) || BUILTIN_TYPE(val) != BUILTIN_TYPE(lit)) {
return -1;
}
if (BUILTIN_TYPE(lit) == T_STRING) {
return rb_str_hash_cmp(lit, val);
}
return !rb_eql(lit, val);
}
static st_index_t
cdhash_hash(VALUE a)
{
if (SPECIAL_CONST_P(a)) return (st_index_t)a;
if (RB_TYPE_P(a, T_STRING)) return rb_str_hash(a);
{
VALUE hval = rb_hash(a);
return (st_index_t)FIX2LONG(hval);
}
}
static const struct st_hash_type cdhash_type = {
cdhash_cmp,
cdhash_hash,
};
struct cdhash_set_label_struct {
VALUE hash;
int pos;
int len;
};
static int
cdhash_set_label_i(VALUE key, VALUE val, void *ptr)
{
struct cdhash_set_label_struct *data = (struct cdhash_set_label_struct *)ptr;
LABEL *lobj = (LABEL *)(val & ~1);
rb_hash_aset(data->hash, key, INT2FIX(lobj->position - (data->pos+data->len)));
return ST_CONTINUE;
}
static inline VALUE
get_ivar_ic_value(rb_iseq_t *iseq,ID id)
{
VALUE val;
struct rb_id_table *tbl = ISEQ_COMPILE_DATA(iseq)->ivar_cache_table;
if (tbl) {
if (rb_id_table_lookup(tbl,id,&val)) {
return val;
}
}
else {
tbl = rb_id_table_create(1);
ISEQ_COMPILE_DATA(iseq)->ivar_cache_table = tbl;
}
val = INT2FIX(iseq->body->is_size++);
rb_id_table_insert(tbl,id,val);
return val;
}
#define BADINSN_DUMP(anchor, list, dest) \
dump_disasm_list_with_cursor(&anchor->anchor, list, dest)
#define BADINSN_ERROR \
(xfree(generated_iseq), \
xfree(insns_info), \
BADINSN_DUMP(anchor, list, NULL), \
COMPILE_ERROR)
static int
fix_sp_depth(rb_iseq_t *iseq, LINK_ANCHOR *const anchor)
{
int stack_max = 0, sp = 0, line = 0;
LINK_ELEMENT *list;
for (list = FIRST_ELEMENT(anchor); list; list = list->next) {
if (list->type == ISEQ_ELEMENT_LABEL) {
LABEL *lobj = (LABEL *)list;
lobj->set = TRUE;
}
}
for (list = FIRST_ELEMENT(anchor); list; list = list->next) {
switch (list->type) {
case ISEQ_ELEMENT_INSN:
{
int j, len, insn;
const char *types;
VALUE *operands;
INSN *iobj = (INSN *)list;
/* update sp */
sp = calc_sp_depth(sp, iobj);
if (sp < 0) {
BADINSN_DUMP(anchor, list, NULL);
COMPILE_ERROR(iseq, iobj->insn_info.line_no,
"argument stack underflow (%d)", sp);
return -1;
}
if (sp > stack_max) {
stack_max = sp;
}
line = iobj->insn_info.line_no;
/* fprintf(stderr, "insn: %-16s, sp: %d\n", insn_name(iobj->insn_id), sp); */
operands = iobj->operands;
insn = iobj->insn_id;
types = insn_op_types(insn);
len = insn_len(insn);
/* operand check */
if (iobj->operand_size != len - 1) {
/* printf("operand size miss! (%d, %d)\n", iobj->operand_size, len); */
BADINSN_DUMP(anchor, list, NULL);
COMPILE_ERROR(iseq, iobj->insn_info.line_no,
"operand size miss! (%d for %d)",
iobj->operand_size, len - 1);
return -1;
}
for (j = 0; types[j]; j++) {
if (types[j] == TS_OFFSET) {
/* label(destination position) */
LABEL *lobj = (LABEL *)operands[j];
if (!lobj->set) {
BADINSN_DUMP(anchor, list, NULL);
COMPILE_ERROR(iseq, iobj->insn_info.line_no,
"unknown label: "LABEL_FORMAT, lobj->label_no);
return -1;
}
if (lobj->sp == -1) {
lobj->sp = sp;
}
}
}
break;
}
case ISEQ_ELEMENT_LABEL:
{
LABEL *lobj = (LABEL *)list;
if (lobj->sp == -1) {
lobj->sp = sp;
}
else {
sp = lobj->sp;
}
break;
}
case ISEQ_ELEMENT_TRACE:
{
/* ignore */
break;
}
case ISEQ_ELEMENT_ADJUST:
{
ADJUST *adjust = (ADJUST *)list;
int orig_sp = sp;
sp = adjust->label ? adjust->label->sp : 0;
if (adjust->line_no != -1 && orig_sp - sp < 0) {
BADINSN_DUMP(anchor, list, NULL);
COMPILE_ERROR(iseq, adjust->line_no,
"iseq_set_sequence: adjust bug %d < %d",
orig_sp, sp);
return -1;
}
break;
}
default:
BADINSN_DUMP(anchor, list, NULL);
COMPILE_ERROR(iseq, line, "unknown list type: %d", list->type);
return -1;
}
}
return stack_max;
}
static int
add_insn_info(struct iseq_insn_info_entry *insns_info, int insns_info_index, int code_index, LINK_ELEMENT *list)
{
if (list->type == ISEQ_ELEMENT_INSN) {
INSN *iobj = (INSN *)list;
if (insns_info_index == 0 ||
insns_info[insns_info_index-1].line_no != iobj->insn_info.line_no ||
insns_info[insns_info_index-1].events != iobj->insn_info.events) {
insns_info[insns_info_index].position = code_index;
insns_info[insns_info_index].line_no = iobj->insn_info.line_no;
insns_info[insns_info_index].events = iobj->insn_info.events;
return TRUE;
}
else {
return FALSE;
}
}
else if (list->type == ISEQ_ELEMENT_ADJUST) {
ADJUST *adjust = (ADJUST *)list;
if (insns_info_index > 0 ||
insns_info[insns_info_index-1].line_no != adjust->line_no) {
insns_info[insns_info_index].position = code_index;
insns_info[insns_info_index].line_no = adjust->line_no;
insns_info[insns_info_index].events = 0;
return TRUE;
}
else {
return FALSE;
}
}
else {
VM_UNREACHABLE(add_insn_info);
}
}
/**
ruby insn object list -> raw instruction sequence
*/
static int
iseq_set_sequence(rb_iseq_t *iseq, LINK_ANCHOR *const anchor)
{
struct iseq_insn_info_entry *insns_info;
LINK_ELEMENT *list;
VALUE *generated_iseq;
rb_event_flag_t events = 0;
int insn_num, code_index, insns_info_index, sp = 0;
int stack_max = fix_sp_depth(iseq, anchor);
if (stack_max < 0) return COMPILE_NG;
/* fix label position */
list = FIRST_ELEMENT(anchor);
insn_num = code_index = 0;
while (list) {
switch (list->type) {
case ISEQ_ELEMENT_INSN:
{
INSN *iobj = (INSN *)list;
/* update sp */
sp = calc_sp_depth(sp, iobj);
code_index += insn_data_length(iobj);
insn_num++;
iobj->insn_info.events |= events;
events = 0;
break;
}
case ISEQ_ELEMENT_LABEL:
{
LABEL *lobj = (LABEL *)list;
lobj->position = code_index;
sp = lobj->sp;
break;
}
case ISEQ_ELEMENT_TRACE:
{
TRACE *trace = (TRACE *)list;
events |= trace->event;
break;
}
case ISEQ_ELEMENT_ADJUST:
{
ADJUST *adjust = (ADJUST *)list;
if (adjust->line_no != -1) {
int orig_sp = sp;
sp = adjust->label ? adjust->label->sp : 0;
if (orig_sp - sp > 0) {
if (orig_sp - sp > 1) code_index++; /* 1 operand */
code_index++; /* insn */
insn_num++;
}
}
break;
}
}
list = list->next;
}
/* make instruction sequence */
generated_iseq = ALLOC_N(VALUE, code_index);
insns_info = ALLOC_N(struct iseq_insn_info_entry, insn_num);
iseq->body->is_entries = ZALLOC_N(union iseq_inline_storage_entry, iseq->body->is_size);
iseq->body->ci_entries = (struct rb_call_info *)ruby_xmalloc(sizeof(struct rb_call_info) * iseq->body->ci_size +
sizeof(struct rb_call_info_with_kwarg) * iseq->body->ci_kw_size);
MEMZERO(iseq->body->ci_entries + iseq->body->ci_size, struct rb_call_info_with_kwarg, iseq->body->ci_kw_size); /* need to clear ci_kw entries */
iseq->body->cc_entries = ZALLOC_N(struct rb_call_cache, iseq->body->ci_size + iseq->body->ci_kw_size);
ISEQ_COMPILE_DATA(iseq)->ci_index = ISEQ_COMPILE_DATA(iseq)->ci_kw_index = 0;
list = FIRST_ELEMENT(anchor);
insns_info_index = code_index = sp = 0;
while (list) {
switch (list->type) {
case ISEQ_ELEMENT_INSN:
{
int j, len, insn;
const char *types;
VALUE *operands;
INSN *iobj = (INSN *)list;
/* update sp */
sp = calc_sp_depth(sp, iobj);
/* fprintf(stderr, "insn: %-16s, sp: %d\n", insn_name(iobj->insn_id), sp); */
operands = iobj->operands;
insn = iobj->insn_id;
generated_iseq[code_index] = insn;
types = insn_op_types(insn);
len = insn_len(insn);
for (j = 0; types[j]; j++) {
char type = types[j];
/* printf("--> [%c - (%d-%d)]\n", type, k, j); */
switch (type) {
case TS_OFFSET:
{
/* label(destination position) */
LABEL *lobj = (LABEL *)operands[j];
generated_iseq[code_index + 1 + j] = lobj->position - (code_index + len);
break;
}
case TS_CDHASH:
{
VALUE map = operands[j];
struct cdhash_set_label_struct data;
data.hash = map;
data.pos = code_index;
data.len = len;
rb_hash_foreach(map, cdhash_set_label_i, (VALUE)&data);
rb_hash_rehash(map);
freeze_hide_obj(map);
generated_iseq[code_index + 1 + j] = map;
break;
}
case TS_LINDEX:
case TS_NUM: /* ulong */
generated_iseq[code_index + 1 + j] = FIX2INT(operands[j]);
break;
case TS_ISEQ: /* iseq */
{
VALUE v = operands[j];
generated_iseq[code_index + 1 + j] = v;
break;
}
case TS_VALUE: /* VALUE */
{
VALUE v = operands[j];
generated_iseq[code_index + 1 + j] = v;
/* to mark ruby object */
iseq_add_mark_object(iseq, v);
break;
}
case TS_IC: /* inline cache */
{
unsigned int ic_index = FIX2UINT(operands[j]);
IC ic = (IC)&iseq->body->is_entries[ic_index];
if (UNLIKELY(ic_index >= iseq->body->is_size)) {
rb_bug("iseq_set_sequence: ic_index overflow: index: %d, size: %d", ic_index, iseq->body->is_size);
}
generated_iseq[code_index + 1 + j] = (VALUE)ic;
break;
}
case TS_CALLINFO: /* call info */
{
struct rb_call_info *base_ci = (struct rb_call_info *)operands[j];
struct rb_call_info *ci;
if (base_ci->flag & VM_CALL_KWARG) {
struct rb_call_info_with_kwarg *ci_kw_entries = (struct rb_call_info_with_kwarg *)&iseq->body->ci_entries[iseq->body->ci_size];
struct rb_call_info_with_kwarg *ci_kw = &ci_kw_entries[ISEQ_COMPILE_DATA(iseq)->ci_kw_index++];
*ci_kw = *((struct rb_call_info_with_kwarg *)base_ci);
ci = (struct rb_call_info *)ci_kw;
assert(ISEQ_COMPILE_DATA(iseq)->ci_kw_index <= iseq->body->ci_kw_size);
}
else {
ci = &iseq->body->ci_entries[ISEQ_COMPILE_DATA(iseq)->ci_index++];
*ci = *base_ci;
assert(ISEQ_COMPILE_DATA(iseq)->ci_index <= iseq->body->ci_size);
}
generated_iseq[code_index + 1 + j] = (VALUE)ci;
break;
}
case TS_CALLCACHE:
{
struct rb_call_cache *cc = &iseq->body->cc_entries[ISEQ_COMPILE_DATA(iseq)->ci_index + ISEQ_COMPILE_DATA(iseq)->ci_kw_index - 1];
generated_iseq[code_index + 1 + j] = (VALUE)cc;
break;
}
case TS_ID: /* ID */
generated_iseq[code_index + 1 + j] = SYM2ID(operands[j]);
break;
case TS_GENTRY:
{
struct rb_global_entry *entry =
(struct rb_global_entry *)(operands[j] & (~1));
generated_iseq[code_index + 1 + j] = (VALUE)entry;
}
break;
case TS_FUNCPTR:
generated_iseq[code_index + 1 + j] = operands[j];
break;
default:
BADINSN_ERROR(iseq, iobj->insn_info.line_no,
"unknown operand type: %c", type);
return COMPILE_NG;
}
}
if (add_insn_info(insns_info, insns_info_index, code_index, (LINK_ELEMENT *)iobj)) insns_info_index++;
code_index += len;
break;
}
case ISEQ_ELEMENT_LABEL:
{
LABEL *lobj = (LABEL *)list;
sp = lobj->sp;
break;
}
case ISEQ_ELEMENT_ADJUST:
{
ADJUST *adjust = (ADJUST *)list;
int orig_sp = sp;
if (adjust->label) {
sp = adjust->label->sp;
}
else {
sp = 0;
}
if (adjust->line_no != -1) {
const int diff = orig_sp - sp;
if (diff > 0) {
if (add_insn_info(insns_info, insns_info_index, code_index, (LINK_ELEMENT *)adjust)) insns_info_index++;
}
if (diff > 1) {
generated_iseq[code_index++] = BIN(adjuststack);
generated_iseq[code_index++] = orig_sp - sp;
}
else if (diff == 1) {
generated_iseq[code_index++] = BIN(pop);
}
else if (diff < 0) {
int label_no = adjust->label ? adjust->label->label_no : -1;
xfree(generated_iseq);
xfree(insns_info);
debug_list(anchor);
COMPILE_ERROR(iseq, adjust->line_no,
"iseq_set_sequence: adjust bug to %d %d < %d",
label_no, orig_sp, sp);
return COMPILE_NG;
}
}
break;
}
default:
/* ignore */
break;
}
list = list->next;
}
iseq->body->iseq_encoded = (void *)generated_iseq;
iseq->body->iseq_size = code_index;
iseq->body->stack_max = stack_max;
/* get rid of memory leak when REALLOC failed */
iseq->body->insns_info = insns_info;
REALLOC_N(insns_info, struct iseq_insn_info_entry, insns_info_index);
iseq->body->insns_info = insns_info;
iseq->body->insns_info_size = insns_info_index;
return COMPILE_OK;
}
static int
label_get_position(LABEL *lobj)
{
return lobj->position;
}
static int
label_get_sp(LABEL *lobj)
{
return lobj->sp;
}
static int
iseq_set_exception_table(rb_iseq_t *iseq)
{
const VALUE *tptr, *ptr;
unsigned int tlen, i;
struct iseq_catch_table_entry *entry;
tlen = (int)RARRAY_LEN(ISEQ_COMPILE_DATA(iseq)->catch_table_ary);
tptr = RARRAY_CONST_PTR(ISEQ_COMPILE_DATA(iseq)->catch_table_ary);
if (tlen > 0) {
struct iseq_catch_table *table = xmalloc(iseq_catch_table_bytes(tlen));
table->size = tlen;
for (i = 0; i < table->size; i++) {
ptr = RARRAY_CONST_PTR(tptr[i]);
entry = &table->entries[i];
entry->type = (enum catch_type)(ptr[0] & 0xffff);
entry->start = label_get_position((LABEL *)(ptr[1] & ~1));
entry->end = label_get_position((LABEL *)(ptr[2] & ~1));
entry->iseq = (rb_iseq_t *)ptr[3];
/* register iseq as mark object */
if (entry->iseq != 0) {
iseq_add_mark_object(iseq, (VALUE)entry->iseq);
}
/* stack depth */
if (ptr[4]) {
LABEL *lobj = (LABEL *)(ptr[4] & ~1);
entry->cont = label_get_position(lobj);
entry->sp = label_get_sp(lobj);
/* TODO: Dirty Hack! Fix me */
if (entry->type == CATCH_TYPE_RESCUE ||
entry->type == CATCH_TYPE_BREAK ||
entry->type == CATCH_TYPE_NEXT) {
entry->sp--;
}
}
else {
entry->cont = 0;
}
}
iseq->body->catch_table = table;
RB_OBJ_WRITE(iseq, &ISEQ_COMPILE_DATA(iseq)->catch_table_ary, 0); /* free */
}
else {
iseq->body->catch_table = NULL;
}
return COMPILE_OK;
}
/*
* set optional argument table
* def foo(a, b=expr1, c=expr2)
* =>
* b:
* expr1
* c:
* expr2
*/
static int
iseq_set_optargs_table(rb_iseq_t *iseq)
{
int i;
VALUE *opt_table = (VALUE *)iseq->body->param.opt_table;
if (iseq->body->param.flags.has_opt) {
for (i = 0; i < iseq->body->param.opt_num + 1; i++) {
opt_table[i] = label_get_position((LABEL *)opt_table[i]);
}
}
return COMPILE_OK;
}
static LINK_ELEMENT *
get_destination_insn(INSN *iobj)
{
LABEL *lobj = (LABEL *)OPERAND_AT(iobj, 0);
LINK_ELEMENT *list;
rb_event_flag_t events = 0;
list = lobj->link.next;
while (list) {
switch (list->type) {
case ISEQ_ELEMENT_INSN:
case ISEQ_ELEMENT_ADJUST:
goto found;
case ISEQ_ELEMENT_LABEL:
/* ignore */
break;
case ISEQ_ELEMENT_TRACE:
{
TRACE *trace = (TRACE *)list;
events |= trace->event;
}
break;
}
list = list->next;
}
found:
if (list && IS_INSN(list)) {
INSN *iobj = (INSN *)list;
iobj->insn_info.events |= events;
}
return list;
}
static LINK_ELEMENT *
get_next_insn(INSN *iobj)
{
LINK_ELEMENT *list = iobj->link.next;
while (list) {
if (IS_INSN(list) || IS_ADJUST(list)) {
return list;
}
list = list->next;
}
return 0;
}
static LINK_ELEMENT *
get_prev_insn(INSN *iobj)
{
LINK_ELEMENT *list = iobj->link.prev;
while (list) {
if (IS_INSN(list) || IS_ADJUST(list)) {
return list;
}
list = list->prev;
}
return 0;
}
static void
unref_destination(INSN *iobj, int pos)
{
LABEL *lobj = (LABEL *)OPERAND_AT(iobj, pos);
--lobj->refcnt;
if (!lobj->refcnt) ELEM_REMOVE(&lobj->link);
}
static void
replace_destination(INSN *dobj, INSN *nobj)
{
VALUE n = OPERAND_AT(nobj, 0);
LABEL *dl = (LABEL *)OPERAND_AT(dobj, 0);
LABEL *nl = (LABEL *)n;
--dl->refcnt;
++nl->refcnt;
OPERAND_AT(dobj, 0) = n;
if (!dl->refcnt) ELEM_REMOVE(&dl->link);
}
static int
remove_unreachable_chunk(rb_iseq_t *iseq, LINK_ELEMENT *i)
{
LINK_ELEMENT *first = i, *end;
if (!i) return 0;
while (i) {
if (IS_INSN(i)) {
if (IS_INSN_ID(i, jump) || IS_INSN_ID(i, leave)) {
break;
}
}
else if (IS_LABEL(i)) {
if (((LABEL *)i)->unremovable) return 0;
if (((LABEL *)i)->refcnt > 0) {
if (i == first) return 0;
i = i->prev;
break;
}
}
else if (IS_TRACE(i)) {
/* do nothing */
}
else return 0;
i = i->next;
}
end = i;
i = first;
do {
if (IS_INSN(i)) {
struct rb_iseq_constant_body *body = iseq->body;
VALUE insn = INSN_OF(i);
int pos, len = insn_len(insn);
for (pos = 0; pos < len; ++pos) {
switch (insn_op_types(insn)[pos]) {
case TS_OFFSET:
unref_destination((INSN *)i, pos);
break;
case TS_CALLINFO:
if (((struct rb_call_info *)OPERAND_AT(i, pos))->flag & VM_CALL_KWARG)
--(body->ci_kw_size);
else
--(body->ci_size);
break;
}
}
}
ELEM_REMOVE(i);
} while ((i != end) && (i = i->next) != 0);
return 1;
}
static int
iseq_pop_newarray(rb_iseq_t *iseq, INSN *iobj)
{
switch (OPERAND_AT(iobj, 0)) {
case INT2FIX(0): /* empty array */
ELEM_REMOVE(&iobj->link);
return TRUE;
case INT2FIX(1): /* single element array */
ELEM_REMOVE(&iobj->link);
return FALSE;
default:
iobj->insn_id = BIN(adjuststack);
return TRUE;
}
}
static int
same_debug_pos_p(LINK_ELEMENT *iobj1, LINK_ELEMENT *iobj2)
{
VALUE debug1 = OPERAND_AT(iobj1, 0);
VALUE debug2 = OPERAND_AT(iobj2, 0);
if (debug1 == debug2) return TRUE;
if (!RB_TYPE_P(debug1, T_ARRAY)) return FALSE;
if (!RB_TYPE_P(debug2, T_ARRAY)) return FALSE;
if (RARRAY_LEN(debug1) != 2) return FALSE;
if (RARRAY_LEN(debug2) != 2) return FALSE;
if (RARRAY_AREF(debug1, 0) != RARRAY_AREF(debug2, 0)) return FALSE;
if (RARRAY_AREF(debug1, 1) != RARRAY_AREF(debug2, 1)) return FALSE;
return TRUE;
}
static int
iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcallopt)
{
INSN *const iobj = (INSN *)list;
again:
if (IS_INSN_ID(iobj, jump)) {
INSN *niobj, *diobj, *piobj;
diobj = (INSN *)get_destination_insn(iobj);
niobj = (INSN *)get_next_insn(iobj);
if (diobj == niobj) {
/*
* jump LABEL
* LABEL:
* =>
* LABEL:
*/
unref_destination(iobj, 0);
ELEM_REMOVE(&iobj->link);
return COMPILE_OK;
}
else if (iobj != diobj && IS_INSN_ID(diobj, jump) &&
OPERAND_AT(iobj, 0) != OPERAND_AT(diobj, 0)) {
/*
* useless jump elimination:
* jump LABEL1
* ...
* LABEL1:
* jump LABEL2
*
* => in this case, first jump instruction should jump to
* LABEL2 directly
*/
replace_destination(iobj, diobj);
remove_unreachable_chunk(iseq, iobj->link.next);
goto again;
}
else if (IS_INSN_ID(diobj, leave)) {
/*
* jump LABEL
* ...
* LABEL:
* leave
* =>
* leave
* ...
* LABEL:
* leave
*/
/* replace */
unref_destination(iobj, 0);
iobj->insn_id = BIN(leave);
iobj->operand_size = 0;
iobj->insn_info = diobj->insn_info;
goto again;
}
else if ((piobj = (INSN *)get_prev_insn(iobj)) != 0 &&
(IS_INSN_ID(piobj, branchif) ||
IS_INSN_ID(piobj, branchunless))) {
INSN *pdiobj = (INSN *)get_destination_insn(piobj);
if (niobj == pdiobj) {
/*
* useless jump elimination (if/unless destination):
* if L1
* jump L2
* L1:
* ...
* L2:
*
* ==>
* unless L2
* L1:
* ...
* L2:
*/
piobj->insn_id = (IS_INSN_ID(piobj, branchif))
? BIN(branchunless) : BIN(branchif);
replace_destination(piobj, iobj);
ELEM_REMOVE(&iobj->link);
return COMPILE_OK;
}
else if (diobj == pdiobj) {
/*
* useless jump elimination (if/unless before jump):
* L1:
* ...
* if L1
* jump L1
*
* ==>
* L1:
* ...
* pop
* jump L1
*/
INSN *popiobj = new_insn_core(iseq, iobj->insn_info.line_no,
BIN(pop), 0, 0);
ELEM_REPLACE(&piobj->link, &popiobj->link);
}
}
if (remove_unreachable_chunk(iseq, iobj->link.next)) {
goto again;
}
}
/*
* putstring "beg"
* putstring "end"
* newrange excl
*
* ==>
*
* putobject "beg".."end"
*/
if (IS_INSN_ID(iobj, checkmatch)) {
INSN *range = (INSN *)get_prev_insn(iobj);
INSN *beg, *end;
if (range && IS_INSN_ID(range, newrange) &&
(end = (INSN *)get_prev_insn(range)) != 0 &&
IS_INSN_ID(end, putstring) &&
(beg = (INSN *)get_prev_insn(end)) != 0 &&
IS_INSN_ID(beg, putstring)) {
VALUE str_beg = OPERAND_AT(beg, 0);
VALUE str_end = OPERAND_AT(end, 0);
int excl = FIX2INT(OPERAND_AT(range, 0));
VALUE lit_range = rb_range_new(str_beg, str_end, excl);
iseq_add_mark_object_compile_time(iseq, lit_range);
ELEM_REMOVE(&beg->link);
ELEM_REMOVE(&end->link);
range->insn_id = BIN(putobject);
OPERAND_AT(range, 0) = lit_range;
}
}
if (IS_INSN_ID(iobj, leave)) {
remove_unreachable_chunk(iseq, iobj->link.next);
}
if (IS_INSN_ID(iobj, branchif) ||
IS_INSN_ID(iobj, branchnil) ||
IS_INSN_ID(iobj, branchunless)) {
/*
* if L1
* ...
* L1:
* jump L2
* =>
* if L2
*/
INSN *nobj = (INSN *)get_destination_insn(iobj);
INSN *pobj = (INSN *)iobj->link.prev;
int prev_dup = 0;
if (pobj) {
if (!IS_INSN(&pobj->link))
pobj = 0;
else if (IS_INSN_ID(pobj, dup))
prev_dup = 1;
}
for (;;) {
if (IS_INSN_ID(nobj, jump)) {
replace_destination(iobj, nobj);
}
else if (prev_dup && IS_INSN_ID(nobj, dup) &&
!!(nobj = (INSN *)nobj->link.next) &&
/* basic blocks, with no labels in the middle */
nobj->insn_id == iobj->insn_id) {
/*
* dup
* if L1
* ...
* L1:
* dup
* if L2
* =>
* dup
* if L2
* ...
* L1:
* dup
* if L2
*/
replace_destination(iobj, nobj);
}
else if (pobj) {
/*
* putnil
* if L1
* =>
* # nothing
*
* putobject true
* if L1
* =>
* jump L1
*
* putstring ".."
* if L1
* =>
* jump L1
*
* putstring ".."
* dup
* if L1
* =>
* putstring ".."
* jump L1
*
*/
int cond;
if (prev_dup && IS_INSN(pobj->link.prev)) {
pobj = (INSN *)pobj->link.prev;
}
if (IS_INSN_ID(pobj, putobject)) {
cond = (IS_INSN_ID(iobj, branchif) ?
OPERAND_AT(pobj, 0) != Qfalse :
IS_INSN_ID(iobj, branchunless) ?
OPERAND_AT(pobj, 0) == Qfalse :
FALSE);
}
else if (IS_INSN_ID(pobj, putstring) ||
IS_INSN_ID(pobj, duparray) ||
IS_INSN_ID(pobj, newarray)) {
cond = IS_INSN_ID(iobj, branchif);
}
else if (IS_INSN_ID(pobj, putnil)) {
cond = !IS_INSN_ID(iobj, branchif);
}
else break;
if (prev_dup || !IS_INSN_ID(pobj, newarray)) {
ELEM_REMOVE(iobj->link.prev);
}
else if (!iseq_pop_newarray(iseq, pobj)) {
pobj = new_insn_core(iseq, pobj->insn_info.line_no, BIN(pop), 0, NULL);
ELEM_INSERT_NEXT(&iobj->link, &pobj->link);
}
if (cond) {
iobj->insn_id = BIN(jump);
goto again;
}
else {
unref_destination(iobj, 0);
ELEM_REMOVE(&iobj->link);
}
break;
}
else break;
nobj = (INSN *)get_destination_insn(nobj);
}
}
if (IS_INSN_ID(iobj, pop)) {
/*
* putself / putnil / putobject obj / putstring "..."
* pop
* =>
* # do nothing
*/
LINK_ELEMENT *prev = iobj->link.prev;
if (IS_INSN(prev)) {
enum ruby_vminsn_type previ = ((INSN *)prev)->insn_id;
if (previ == BIN(putobject) || previ == BIN(putnil) ||
previ == BIN(putself) || previ == BIN(putstring) ||
previ == BIN(duparray)) {
/* just push operand or static value and pop soon, no
* side effects */
ELEM_REMOVE(prev);
ELEM_REMOVE(&iobj->link);
}
else if (previ == BIN(newarray) && iseq_pop_newarray(iseq, (INSN*)prev)) {
ELEM_REMOVE(&iobj->link);
}
}
}
if (IS_INSN_ID(iobj, newarray) ||
IS_INSN_ID(iobj, duparray) ||
IS_INSN_ID(iobj, expandarray) ||
IS_INSN_ID(iobj, concatarray) ||
IS_INSN_ID(iobj, splatarray) ||
0) {
/*
* newarray N
* splatarray
* =>
* newarray N
* newarray always puts an array
*/
LINK_ELEMENT *next = iobj->link.next;
if (IS_INSN(next) && IS_INSN_ID(next, splatarray)) {
/* remove splatarray following always-array insn */
ELEM_REMOVE(next);
}
}
if (IS_INSN_ID(iobj, tostring)) {
LINK_ELEMENT *next = iobj->link.next;
/*
* tostring
* concatstrings 1
* =>
* tostring
*/
if (IS_INSN(next) && IS_INSN_ID(next, concatstrings) &&
OPERAND_AT(next, 0) == INT2FIX(1)) {
ELEM_REMOVE(next);
}
}
if (IS_INSN_ID(iobj, putstring) ||
(IS_INSN_ID(iobj, putobject) && RB_TYPE_P(OPERAND_AT(iobj, 0), T_STRING))) {
/*
* putstring ""
* concatstrings N
* =>
* concatstrings N-1
*/
if (IS_NEXT_INSN_ID(&iobj->link, concatstrings) &&
RSTRING_LEN(OPERAND_AT(iobj, 0)) == 0) {
INSN *next = (INSN *)iobj->link.next;
if ((OPERAND_AT(next, 0) = FIXNUM_INC(OPERAND_AT(next, 0), -1)) == INT2FIX(1)) {
ELEM_REMOVE(&next->link);
}
ELEM_REMOVE(&iobj->link);
}
}
if (IS_INSN_ID(iobj, concatstrings)) {
/*
* concatstrings N
* concatstrings M
* =>
* concatstrings N+M-1
*/
LINK_ELEMENT *next = iobj->link.next, *freeze = 0;
INSN *jump = 0;
if (IS_INSN(next) && IS_INSN_ID(next, freezestring))
next = (freeze = next)->next;
if (IS_INSN(next) && IS_INSN_ID(next, jump))
next = get_destination_insn(jump = (INSN *)next);
if (IS_INSN(next) && IS_INSN_ID(next, concatstrings)) {
int n = FIX2INT(OPERAND_AT(iobj, 0)) + FIX2INT(OPERAND_AT(next, 0)) - 1;
OPERAND_AT(iobj, 0) = INT2FIX(n);
if (jump) {
LABEL *label = ((LABEL *)OPERAND_AT(jump, 0));
if (!--label->refcnt) {
ELEM_REMOVE(&label->link);
}
else {
label = NEW_LABEL(0);
OPERAND_AT(jump, 0) = (VALUE)label;
}
label->refcnt++;
if (freeze && IS_NEXT_INSN_ID(next, freezestring)) {
if (same_debug_pos_p(freeze, next->next)) {
ELEM_REMOVE(freeze);
}
else {
next = next->next;
}
}
ELEM_INSERT_NEXT(next, &label->link);
CHECK(iseq_peephole_optimize(iseq, get_next_insn(jump), do_tailcallopt));
}
else {
if (freeze) ELEM_REMOVE(freeze);
ELEM_REMOVE(next);
}
}
}
if (do_tailcallopt &&
(IS_INSN_ID(iobj, send) ||
IS_INSN_ID(iobj, opt_aref_with) ||
IS_INSN_ID(iobj, opt_aset_with) ||
IS_INSN_ID(iobj, invokesuper))) {
/*
* send ...
* leave
* =>
* send ..., ... | VM_CALL_TAILCALL, ...
* leave # unreachable
*/
INSN *piobj = NULL;
if (iobj->link.next) {
LINK_ELEMENT *next = iobj->link.next;
do {
if (!IS_INSN(next)) {
next = next->next;
continue;
}
switch (INSN_OF(next)) {
case BIN(nop):
next = next->next;
break;
case BIN(jump):
/* if cond
* return tailcall
* end
*/
next = get_destination_insn((INSN *)next);
break;
case BIN(leave):
piobj = iobj;
default:
next = NULL;
break;
}
} while (next);
}
if (piobj) {
struct rb_call_info *ci = (struct rb_call_info *)piobj->operands[0];
if (IS_INSN_ID(piobj, send) || IS_INSN_ID(piobj, invokesuper)) {
if (piobj->operands[2] == 0) { /* no blockiseq */
ci->flag |= VM_CALL_TAILCALL;
}
}
else {
ci->flag |= VM_CALL_TAILCALL;
}
}
}
if (IS_INSN_ID(iobj, dup)) {
if (IS_NEXT_INSN_ID(&iobj->link, setlocal)) {
LINK_ELEMENT *set1 = iobj->link.next, *set2 = NULL;
if (IS_NEXT_INSN_ID(set1, setlocal)) {
set2 = set1->next;
if (OPERAND_AT(set1, 0) == OPERAND_AT(set2, 0) &&
OPERAND_AT(set1, 1) == OPERAND_AT(set2, 1)) {
ELEM_REMOVE(set1);
ELEM_REMOVE(&iobj->link);
}
}
else if (IS_NEXT_INSN_ID(set1, dup) &&
IS_NEXT_INSN_ID(set1->next, setlocal)) {
set2 = set1->next->next;
if (OPERAND_AT(set1, 0) == OPERAND_AT(set2, 0) &&
OPERAND_AT(set1, 1) == OPERAND_AT(set2, 1)) {
ELEM_REMOVE(set1->next);
ELEM_REMOVE(set2);
}
}
}
}
if (IS_INSN_ID(iobj, getlocal)) {
LINK_ELEMENT *niobj = &iobj->link;
if (IS_NEXT_INSN_ID(niobj, dup)) {
niobj = niobj->next;
}
if (IS_NEXT_INSN_ID(niobj, setlocal)) {
LINK_ELEMENT *set1 = niobj->next;
if (OPERAND_AT(iobj, 0) == OPERAND_AT(set1, 0) &&
OPERAND_AT(iobj, 1) == OPERAND_AT(set1, 1)) {
ELEM_REMOVE(set1);
ELEM_REMOVE(niobj);
}
}
}
return COMPILE_OK;
}
static int
insn_set_specialized_instruction(rb_iseq_t *iseq, INSN *iobj, int insn_id)
{
iobj->insn_id = insn_id;
iobj->operand_size = insn_len(insn_id) - 1;
if (insn_id == BIN(opt_neq)) {
VALUE *old_operands = iobj->operands;
iobj->operand_size = 4;
iobj->operands = (VALUE *)compile_data_alloc(iseq, iobj->operand_size * sizeof(VALUE));
iobj->operands[0] = old_operands[0];
iobj->operands[1] = Qfalse; /* CALL_CACHE */
iobj->operands[2] = (VALUE)new_callinfo(iseq, idEq, 1, 0, NULL, FALSE);
iobj->operands[3] = Qfalse; /* CALL_CACHE */
}
return COMPILE_OK;
}
static int
iseq_specialized_instruction(rb_iseq_t *iseq, INSN *iobj)
{
if (IS_INSN_ID(iobj, newarray) && iobj->link.next &&
IS_INSN(iobj->link.next)) {
/*
* [a, b, ...].max/min -> a, b, c, opt_newarray_max/min
*/
INSN *niobj = (INSN *)iobj->link.next;
if (IS_INSN_ID(niobj, send)) {
struct rb_call_info *ci = (struct rb_call_info *)OPERAND_AT(niobj, 0);
if ((ci->flag & VM_CALL_ARGS_SIMPLE) && ci->orig_argc == 0) {
switch (ci->mid) {
case idMax:
iobj->insn_id = BIN(opt_newarray_max);
ELEM_REMOVE(&niobj->link);
return COMPILE_OK;
case idMin:
iobj->insn_id = BIN(opt_newarray_min);
ELEM_REMOVE(&niobj->link);
return COMPILE_OK;
}
}
}
}
if (IS_INSN_ID(iobj, send)) {
struct rb_call_info *ci = (struct rb_call_info *)OPERAND_AT(iobj, 0);
const rb_iseq_t *blockiseq = (rb_iseq_t *)OPERAND_AT(iobj, 2);
#define SP_INSN(opt) insn_set_specialized_instruction(iseq, iobj, BIN(opt_##opt))
if (ci->flag & VM_CALL_ARGS_SIMPLE) {
switch (ci->orig_argc) {
case 0:
switch (ci->mid) {
case idLength: SP_INSN(length); return COMPILE_OK;
case idSize: SP_INSN(size); return COMPILE_OK;
case idEmptyP: SP_INSN(empty_p);return COMPILE_OK;
case idSucc: SP_INSN(succ); return COMPILE_OK;
case idNot: SP_INSN(not); return COMPILE_OK;
}
break;
case 1:
switch (ci->mid) {
case idPLUS: SP_INSN(plus); return COMPILE_OK;
case idMINUS: SP_INSN(minus); return COMPILE_OK;
case idMULT: SP_INSN(mult); return COMPILE_OK;
case idDIV: SP_INSN(div); return COMPILE_OK;
case idMOD: SP_INSN(mod); return COMPILE_OK;
case idEq: SP_INSN(eq); return COMPILE_OK;
case idNeq: SP_INSN(neq); return COMPILE_OK;
case idLT: SP_INSN(lt); return COMPILE_OK;
case idLE: SP_INSN(le); return COMPILE_OK;
case idGT: SP_INSN(gt); return COMPILE_OK;
case idGE: SP_INSN(ge); return COMPILE_OK;
case idLTLT: SP_INSN(ltlt); return COMPILE_OK;
case idAREF: SP_INSN(aref); return COMPILE_OK;
}
break;
case 2:
switch (ci->mid) {
case idASET: SP_INSN(aset); return COMPILE_OK;
}
break;
}
}
if ((ci->flag & VM_CALL_ARGS_BLOCKARG) == 0 && blockiseq == NULL) {
iobj->insn_id = BIN(opt_send_without_block);
iobj->operand_size = insn_len(iobj->insn_id) - 1;
}
}
#undef SP_INSN
return COMPILE_OK;
}
static inline int
tailcallable_p(rb_iseq_t *iseq)
{
switch (iseq->body->type) {
case ISEQ_TYPE_TOP:
case ISEQ_TYPE_EVAL:
case ISEQ_TYPE_MAIN:
/* not tail callable because cfp will be over popped */
case ISEQ_TYPE_RESCUE:
case ISEQ_TYPE_ENSURE:
/* rescue block can't tail call because of errinfo */
return FALSE;
default:
return TRUE;
}
}
static int
iseq_optimize(rb_iseq_t *iseq, LINK_ANCHOR *const anchor)
{
LINK_ELEMENT *list;
const int do_peepholeopt = ISEQ_COMPILE_DATA(iseq)->option->peephole_optimization;
const int do_tailcallopt = tailcallable_p(iseq) &&
ISEQ_COMPILE_DATA(iseq)->option->tailcall_optimization;
const int do_si = ISEQ_COMPILE_DATA(iseq)->option->specialized_instruction;
const int do_ou = ISEQ_COMPILE_DATA(iseq)->option->operands_unification;
int rescue_level = 0;
int tailcallopt = do_tailcallopt;
list = FIRST_ELEMENT(anchor);
while (list) {
if (IS_INSN(list)) {
if (do_peepholeopt) {
iseq_peephole_optimize(iseq, list, tailcallopt);
}
if (do_si) {
iseq_specialized_instruction(iseq, (INSN *)list);
}
if (do_ou) {
insn_operands_unification((INSN *)list);
}
}
if (IS_LABEL(list)) {
switch (((LABEL *)list)->rescued) {
case LABEL_RESCUE_BEG:
rescue_level++;
tailcallopt = FALSE;
break;
case LABEL_RESCUE_END:
if (!--rescue_level) tailcallopt = do_tailcallopt;
break;
}
}
list = list->next;
}
return COMPILE_OK;
}
#if OPT_INSTRUCTIONS_UNIFICATION
static INSN *
new_unified_insn(rb_iseq_t *iseq,
int insn_id, int size, LINK_ELEMENT *seq_list)
{
INSN *iobj = 0;
LINK_ELEMENT *list = seq_list;
int i, argc = 0;
VALUE *operands = 0, *ptr = 0;
/* count argc */
for (i = 0; i < size; i++) {
iobj = (INSN *)list;
argc += iobj->operand_size;
list = list->next;
}
if (argc > 0) {
ptr = operands =
(VALUE *)compile_data_alloc(iseq, sizeof(VALUE) * argc);
}
/* copy operands */
list = seq_list;
for (i = 0; i < size; i++) {
iobj = (INSN *)list;
MEMCPY(ptr, iobj->operands, VALUE, iobj->operand_size);
ptr += iobj->operand_size;
list = list->next;
}
return new_insn_core(iseq, iobj->insn_info.line_no, insn_id, argc, operands);
}
#endif
/*
* This scheme can get more performance if do this optimize with
* label address resolving.
* It's future work (if compile time was bottle neck).
*/
static int
iseq_insns_unification(rb_iseq_t *iseq, LINK_ANCHOR *const anchor)
{
#if OPT_INSTRUCTIONS_UNIFICATION
LINK_ELEMENT *list;
INSN *iobj, *niobj;
int id, k;
intptr_t j;
list = FIRST_ELEMENT(anchor);
while (list) {
if (IS_INSN(list)) {
iobj = (INSN *)list;
id = iobj->insn_id;
if (unified_insns_data[id] != 0) {
const int *const *entry = unified_insns_data[id];
for (j = 1; j < (intptr_t)entry[0]; j++) {
const int *unified = entry[j];
LINK_ELEMENT *li = list->next;
for (k = 2; k < unified[1]; k++) {
if (!IS_INSN(li) ||
((INSN *)li)->insn_id != unified[k]) {
goto miss;
}
li = li->next;
}
/* matched */
niobj =
new_unified_insn(iseq, unified[0], unified[1] - 1,
list);
/* insert to list */
niobj->link.prev = (LINK_ELEMENT *)iobj->link.prev;
niobj->link.next = li;
if (li) {
li->prev = (LINK_ELEMENT *)niobj;
}
list->prev->next = (LINK_ELEMENT *)niobj;
list = (LINK_ELEMENT *)niobj;
break;
miss:;
}
}
}
list = list->next;
}
#endif
return COMPILE_OK;
}
#if OPT_STACK_CACHING
#define SC_INSN(insn, stat) sc_insn_info[(insn)][(stat)]
#define SC_NEXT(insn) sc_insn_next[(insn)]
#include "opt_sc.inc"
static int
insn_set_sc_state(rb_iseq_t *iseq, const LINK_ELEMENT *anchor, INSN *iobj, int state)
{
int nstate;
int insn_id;
insn_id = iobj->insn_id;
iobj->insn_id = SC_INSN(insn_id, state);
nstate = SC_NEXT(iobj->insn_id);
if (insn_id == BIN(jump) ||
insn_id == BIN(branchif) || insn_id == BIN(branchunless)) {
LABEL *lobj = (LABEL *)OPERAND_AT(iobj, 0);
if (lobj->sc_state != 0) {
if (lobj->sc_state != nstate) {
BADINSN_DUMP(anchor, iobj, lobj);
COMPILE_ERROR(iseq, iobj->insn_info.line_no,
"insn_set_sc_state error: %d at "LABEL_FORMAT
", %d expected\n",
lobj->sc_state, lobj->label_no, nstate);
return COMPILE_NG;
}
}
else {
lobj->sc_state = nstate;
}
if (insn_id == BIN(jump)) {
nstate = SCS_XX;
}
}
else if (insn_id == BIN(leave)) {
nstate = SCS_XX;
}
return nstate;
}
static int
label_set_sc_state(LABEL *lobj, int state)
{
if (lobj->sc_state != 0) {
if (lobj->sc_state != state) {
state = lobj->sc_state;
}
}
else {
lobj->sc_state = state;
}
return state;
}
#endif
static int
iseq_set_sequence_stackcaching(rb_iseq_t *iseq, LINK_ANCHOR *const anchor)
{
#if OPT_STACK_CACHING
LINK_ELEMENT *list;
int state, insn_id;
/* initialize */
state = SCS_XX;
list = FIRST_ELEMENT(anchor);
/* dump_disasm_list(list); */
/* for each list element */
while (list) {
redo_point:
switch (list->type) {
case ISEQ_ELEMENT_INSN:
{
INSN *iobj = (INSN *)list;
insn_id = iobj->insn_id;
/* dump_disasm_list(list); */
switch (insn_id) {
case BIN(nop):
{
/* exception merge point */
if (state != SCS_AX) {
INSN *rpobj =
new_insn_body(iseq, 0, BIN(reput), 0);
/* replace this insn */
ELEM_REPLACE(list, (LINK_ELEMENT *)rpobj);
list = (LINK_ELEMENT *)rpobj;
goto redo_point;
}
break;
}
case BIN(swap):
{
if (state == SCS_AB || state == SCS_BA) {
state = (state == SCS_AB ? SCS_BA : SCS_AB);
ELEM_REMOVE(list);
list = list->next;
goto redo_point;
}
break;
}
case BIN(pop):
{
switch (state) {
case SCS_AX:
case SCS_BX:
state = SCS_XX;
break;
case SCS_AB:
state = SCS_AX;
break;
case SCS_BA:
state = SCS_BX;
break;
case SCS_XX:
goto normal_insn;
default:
COMPILE_ERROR(iseq, iobj->insn_info.line_no,
"unreachable");
return COMPILE_NG;
}
/* remove useless pop */
ELEM_REMOVE(list);
list = list->next;
goto redo_point;
}
default:;
/* none */
} /* end of switch */
normal_insn:
state = insn_set_sc_state(iseq, anchor, iobj, state);
break;
}
case ISEQ_ELEMENT_LABEL:
{
LABEL *lobj;
lobj = (LABEL *)list;
state = label_set_sc_state(lobj, state);
}
default:
break;
}
list = list->next;
}
#endif
return COMPILE_OK;
}
static int
all_string_result_p(const NODE *node)
{
if (!node) return FALSE;
switch (nd_type(node)) {
case NODE_STR: case NODE_DSTR:
return TRUE;
case NODE_IF: case NODE_UNLESS:
if (!node->nd_body || !node->nd_else) return FALSE;
if (all_string_result_p(node->nd_body))
return all_string_result_p(node->nd_else);
return FALSE;
case NODE_AND: case NODE_OR:
if (!node->nd_2nd)
return all_string_result_p(node->nd_1st);
if (!all_string_result_p(node->nd_1st))
return FALSE;
return all_string_result_p(node->nd_2nd);
default:
return FALSE;
}
}
static int
compile_dstr_fragments(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int *cntp)
{
const NODE *list = node->nd_next;
VALUE lit = node->nd_lit;
LINK_ELEMENT *first_lit = 0;
int cnt = 0;
debugp_param("nd_lit", lit);
if (!NIL_P(lit)) {
cnt++;
if (!RB_TYPE_P(lit, T_STRING)) {
COMPILE_ERROR(ERROR_ARGS "dstr: must be string: %s",
rb_builtin_type_name(TYPE(lit)));
return COMPILE_NG;
}
lit = freeze_literal(iseq, lit);
ADD_INSN1(ret, nd_line(node), putobject, lit);
if (RSTRING_LEN(lit) == 0) first_lit = LAST_ELEMENT(ret);
}
while (list) {
const NODE *const head = list->nd_head;
if (nd_type(head) == NODE_STR) {
lit = freeze_literal(iseq, head->nd_lit);
ADD_INSN1(ret, nd_line(head), putobject, lit);
lit = Qnil;
}
else {
CHECK(COMPILE(ret, "each string", head));
}
cnt++;
list = list->nd_next;
}
if (NIL_P(lit) && first_lit) {
ELEM_REMOVE(first_lit);
--cnt;
}
*cntp = cnt;
return COMPILE_OK;
}
static int
compile_dstr(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node)
{
int cnt;
CHECK(compile_dstr_fragments(iseq, ret, node, &cnt));
ADD_INSN1(ret, nd_line(node), concatstrings, INT2FIX(cnt));
return COMPILE_OK;
}
static int
compile_dregx(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node)
{
int cnt;
CHECK(compile_dstr_fragments(iseq, ret, node, &cnt));
ADD_INSN2(ret, nd_line(node), toregexp, INT2FIX(node->nd_cflag), INT2FIX(cnt));
return COMPILE_OK;
}
static int
compile_flip_flop(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int again,
LABEL *then_label, LABEL *else_label)
{
const int line = nd_line(node);
LABEL *lend = NEW_LABEL(line);
rb_num_t cnt = ISEQ_FLIP_CNT_INCREMENT(iseq->body->local_iseq)
+ VM_SVAR_FLIPFLOP_START;
VALUE key = INT2FIX(cnt);
ADD_INSN2(ret, line, getspecial, key, INT2FIX(0));
ADD_INSNL(ret, line, branchif, lend);
/* *flip == 0 */
CHECK(COMPILE(ret, "flip2 beg", node->nd_beg));
ADD_INSNL(ret, line, branchunless, else_label);
ADD_INSN1(ret, line, putobject, Qtrue);
ADD_INSN1(ret, line, setspecial, key);
if (!again) {
ADD_INSNL(ret, line, jump, then_label);
}
/* *flip == 1 */
ADD_LABEL(ret, lend);
CHECK(COMPILE(ret, "flip2 end", node->nd_end));
ADD_INSNL(ret, line, branchunless, then_label);
ADD_INSN1(ret, line, putobject, Qfalse);
ADD_INSN1(ret, line, setspecial, key);
ADD_INSNL(ret, line, jump, then_label);
return COMPILE_OK;
}
static int
compile_branch_condition(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *cond,
LABEL *then_label, LABEL *else_label)
{
again:
switch (nd_type(cond)) {
case NODE_AND:
{
LABEL *label = NEW_LABEL(nd_line(cond));
CHECK(compile_branch_condition(iseq, ret, cond->nd_1st, label,
else_label));
if (!label->refcnt) break;
ADD_LABEL(ret, label);
cond = cond->nd_2nd;
goto again;
}
case NODE_OR:
{
LABEL *label = NEW_LABEL(nd_line(cond));
CHECK(compile_branch_condition(iseq, ret, cond->nd_1st, then_label,
label));
if (!label->refcnt) break;
ADD_LABEL(ret, label);
cond = cond->nd_2nd;
goto again;
}
case NODE_LIT: /* NODE_LIT is always true */
case NODE_TRUE:
case NODE_STR:
case NODE_ZARRAY:
case NODE_LAMBDA:
/* printf("useless condition eliminate (%s)\n", ruby_node_name(nd_type(cond))); */
ADD_INSNL(ret, nd_line(cond), jump, then_label);
break;
case NODE_FALSE:
case NODE_NIL:
/* printf("useless condition eliminate (%s)\n", ruby_node_name(nd_type(cond))); */
ADD_INSNL(ret, nd_line(cond), jump, else_label);
break;
case NODE_FLIP2:
CHECK(compile_flip_flop(iseq, ret, cond, TRUE, then_label, else_label));
break;
case NODE_FLIP3:
CHECK(compile_flip_flop(iseq, ret, cond, FALSE, then_label, else_label));
break;
case NODE_DEFINED:
CHECK(compile_defined_expr(iseq, ret, cond, Qfalse));
goto branch;
default:
CHECK(COMPILE(ret, "branch condition", cond));
branch:
ADD_INSNL(ret, nd_line(cond), branchunless, else_label);
ADD_INSNL(ret, nd_line(cond), jump, then_label);
break;
}
return COMPILE_OK;
}
static int
compile_array_keyword_arg(rb_iseq_t *iseq, LINK_ANCHOR *const ret,
const NODE *const root_node,
struct rb_call_info_kw_arg **const kw_arg_ptr,
unsigned int *flag)
{
if (kw_arg_ptr == NULL) return FALSE;
if (nd_type(root_node) == NODE_HASH && root_node->nd_head && nd_type(root_node->nd_head) == NODE_ARRAY) {
const NODE *node = root_node->nd_head;
while (node) {
const NODE *key_node = node->nd_head;
assert(nd_type(node) == NODE_ARRAY);
if (!key_node) {
if (flag && !root_node->nd_alen) *flag |= VM_CALL_KW_SPLAT;
return FALSE;
}
else if (nd_type(key_node) == NODE_LIT && RB_TYPE_P(key_node->nd_lit, T_SYMBOL)) {
/* can be keywords */
}
else {
return FALSE;
}
node = node->nd_next; /* skip value node */
node = node->nd_next;
}
/* may be keywords */
node = root_node->nd_head;
{
int len = (int)node->nd_alen / 2;
struct rb_call_info_kw_arg *kw_arg = (struct rb_call_info_kw_arg *)ruby_xmalloc(sizeof(struct rb_call_info_kw_arg) + sizeof(VALUE) * (len - 1));
VALUE *keywords = kw_arg->keywords;
int i = 0;
kw_arg->keyword_len = len;
*kw_arg_ptr = kw_arg;
for (i=0; node != NULL; i++, node = node->nd_next->nd_next) {
const NODE *key_node = node->nd_head;
const NODE *val_node = node->nd_next->nd_head;
keywords[i] = key_node->nd_lit;
COMPILE(ret, "keyword values", val_node);
}
assert(i == len);
return TRUE;
}
}
return FALSE;
}
enum compile_array_type_t {
COMPILE_ARRAY_TYPE_ARRAY,
COMPILE_ARRAY_TYPE_HASH,
COMPILE_ARRAY_TYPE_ARGS
};
static inline int
static_literal_node_p(const NODE *node)
{
node = node->nd_head;
switch (nd_type(node)) {
case NODE_LIT:
case NODE_NIL:
case NODE_TRUE:
case NODE_FALSE:
return TRUE;
default:
return FALSE;
}
}
static inline VALUE
static_literal_value(const NODE *node)
{
node = node->nd_head;
switch (nd_type(node)) {
case NODE_NIL:
return Qnil;
case NODE_TRUE:
return Qtrue;
case NODE_FALSE:
return Qfalse;
default:
return node->nd_lit;
}
}
static int
compile_array(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node_root,
enum compile_array_type_t type, struct rb_call_info_kw_arg **keywords_ptr,
unsigned int *flag, int popped)
{
const NODE *node = node_root;
int line = (int)nd_line(node);
int len = 0;
if (nd_type(node) == NODE_ZARRAY) {
if (!popped) {
switch (type) {
case COMPILE_ARRAY_TYPE_ARRAY: ADD_INSN1(ret, line, newarray, INT2FIX(0)); break;
case COMPILE_ARRAY_TYPE_HASH: ADD_INSN1(ret, line, newhash, INT2FIX(0)); break;
case COMPILE_ARRAY_TYPE_ARGS: /* do nothing */ break;
}
}
}
else {
int opt_p = 1;
int first = 1, i;
while (node) {
const NODE *start_node = node, *end_node;
const NODE *kw = 0;
const int max = 0x100;
DECL_ANCHOR(anchor);
INIT_ANCHOR(anchor);
for (i=0; i<max && node; i++, len++, node = node->nd_next) {
if (CPDEBUG > 0) {
EXPECT_NODE("compile_array", node, NODE_ARRAY, -1);
}
if (type != COMPILE_ARRAY_TYPE_ARRAY && !node->nd_head) {
kw = node->nd_next;
node = 0;
if (kw) {
opt_p = 0;
node = kw->nd_next;
kw = kw->nd_head;
}
break;
}
if (opt_p && !static_literal_node_p(node)) {
opt_p = 0;
}
if (type == COMPILE_ARRAY_TYPE_ARGS &&
node->nd_next == NULL /* last node */ &&
compile_array_keyword_arg(iseq, anchor, node->nd_head, keywords_ptr, flag)) {
len--;
}
else {
COMPILE_(anchor, "array element", node->nd_head, popped);
}
}
if (opt_p && type != COMPILE_ARRAY_TYPE_ARGS) {
if (!popped) {
VALUE ary = rb_ary_tmp_new(i);
end_node = node;
node = start_node;
while (node != end_node) {
rb_ary_push(ary, static_literal_value(node));
node = node->nd_next;
}
while (node && node->nd_next &&
static_literal_node_p(node) &&
static_literal_node_p(node->nd_next)) {
VALUE elem[2];
elem[0] = static_literal_value(node);
elem[1] = static_literal_value(node->nd_next);
rb_ary_cat(ary, elem, 2);
node = node->nd_next->nd_next;
len++;
}
OBJ_FREEZE(ary);
iseq_add_mark_object_compile_time(iseq, ary);
if (first) {
first = 0;
if (type == COMPILE_ARRAY_TYPE_ARRAY) {
ADD_INSN1(ret, line, duparray, ary);
}
else { /* COMPILE_ARRAY_TYPE_HASH */
ADD_INSN1(ret, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
ADD_INSN1(ret, line, putobject, ary);
ADD_SEND(ret, line, id_core_hash_from_ary, INT2FIX(1));
}
}
else {
if (type == COMPILE_ARRAY_TYPE_ARRAY) {
ADD_INSN1(ret, line, putobject, ary);
ADD_INSN(ret, line, concatarray);
}
else {
#if 0
ADD_INSN1(ret, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
ADD_INSN1(ret, line, putobject, ary);
ADD_SEND(ret, line, id_core_hash_merge_ary, INT2FIX(1));
/* wrong number of arguments -----------------------^ */
#else
COMPILE_ERROR(ERROR_ARGS "core#hash_merge_ary");
return -1;
#endif
}
}
}
}
else {
if (!popped) {
switch (type) {
case COMPILE_ARRAY_TYPE_ARRAY:
ADD_INSN1(anchor, line, newarray, INT2FIX(i));
if (first) {
first = 0;
}
else {
ADD_INSN(anchor, line, concatarray);
}
APPEND_LIST(ret, anchor);
break;
case COMPILE_ARRAY_TYPE_HASH:
if (i > 0) {
if (first) {
ADD_INSN1(anchor, line, newhash, INT2FIX(i));
APPEND_LIST(ret, anchor);
}
else {
ADD_INSN1(ret, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
ADD_INSN(ret, line, swap);
APPEND_LIST(ret, anchor);
ADD_SEND(ret, line, id_core_hash_merge_ptr, INT2FIX(i + 1));
}
}
if (kw) {
VALUE nhash = (i > 0 || !first) ? INT2FIX(2) : INT2FIX(1);
ADD_INSN1(ret, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
if (i > 0 || !first) ADD_INSN(ret, line, swap);
COMPILE(ret, "keyword splat", kw);
ADD_SEND(ret, line, id_core_hash_merge_kwd, nhash);
if (nhash == INT2FIX(1)) ADD_SEND(ret, line, rb_intern("dup"), INT2FIX(0));
}
first = 0;
break;
case COMPILE_ARRAY_TYPE_ARGS:
APPEND_LIST(ret, anchor);
break;
}
}
else {
/* popped */
APPEND_LIST(ret, anchor);
}
}
}
}
return len;
}
static VALUE
case_when_optimizable_literal(const NODE *const node)
{
switch (nd_type(node)) {
case NODE_LIT: {
VALUE v = node->nd_lit;
double ival;
if (RB_TYPE_P(v, T_FLOAT) &&
modf(RFLOAT_VALUE(v), &ival) == 0.0) {
return FIXABLE(ival) ? LONG2FIX((long)ival) : rb_dbl2big(ival);
}
if (SYMBOL_P(v) || rb_obj_is_kind_of(v, rb_cNumeric)) {
return v;
}
break;
}
case NODE_NIL:
return Qnil;
case NODE_TRUE:
return Qtrue;
case NODE_FALSE:
return Qfalse;
case NODE_STR:
return rb_fstring(node->nd_lit);
}
return Qundef;
}
static int
when_vals(rb_iseq_t *iseq, LINK_ANCHOR *const cond_seq, const NODE *vals,
LABEL *l1, int only_special_literals, VALUE literals)
{
while (vals) {
const NODE *val = vals->nd_head;
VALUE lit = case_when_optimizable_literal(val);
if (lit == Qundef) {
only_special_literals = 0;
}
else {
if (rb_hash_lookup(literals, lit) != Qnil) {
VALUE file = rb_iseq_path(iseq);
rb_compile_warning(RSTRING_PTR(file), nd_line(val),
"duplicated when clause is ignored");
}
else {
rb_hash_aset(literals, lit, (VALUE)(l1) | 1);
}
}
ADD_INSN(cond_seq, nd_line(val), dup); /* dup target */
if (nd_type(val) == NODE_STR) {
debugp_param("nd_lit", val->nd_lit);
lit = freeze_literal(iseq, val->nd_lit);
ADD_INSN1(cond_seq, nd_line(val), putobject, lit);
}
else {
COMPILE(cond_seq, "when cond", val);
}
ADD_INSN1(cond_seq, nd_line(vals), checkmatch, INT2FIX(VM_CHECKMATCH_TYPE_CASE));
ADD_INSNL(cond_seq, nd_line(val), branchif, l1);
vals = vals->nd_next;
}
return only_special_literals;
}
static int
compile_massign_lhs(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node)
{
switch (nd_type(node)) {
case NODE_ATTRASGN: {
INSN *iobj;
struct rb_call_info *ci;
VALUE dupidx;
int line = nd_line(node);
CHECK(COMPILE_POPPED(ret, "masgn lhs (NODE_ATTRASGN)", node));
iobj = (INSN *)get_prev_insn((INSN *)LAST_ELEMENT(ret)); /* send insn */
ci = (struct rb_call_info *)iobj->operands[0];
ci->orig_argc += 1;
dupidx = INT2FIX(ci->orig_argc);
INSERT_BEFORE_INSN1(iobj, line, topn, dupidx);
if (ci->flag & VM_CALL_ARGS_SPLAT) {
--ci->orig_argc;
INSERT_BEFORE_INSN1(iobj, line, newarray, INT2FIX(1));
INSERT_BEFORE_INSN(iobj, line, concatarray);
}
ADD_INSN(ret, line, pop); /* result */
break;
}
case NODE_MASGN: {
DECL_ANCHOR(anchor);
INIT_ANCHOR(anchor);
CHECK(COMPILE_POPPED(anchor, "nest masgn lhs", node));
ELEM_REMOVE(FIRST_ELEMENT(anchor));
ADD_SEQ(ret, anchor);
break;
}
default: {
DECL_ANCHOR(anchor);
INIT_ANCHOR(anchor);
CHECK(COMPILE_POPPED(anchor, "masgn lhs", node));
ELEM_REMOVE(FIRST_ELEMENT(anchor));
ADD_SEQ(ret, anchor);
}
}
return COMPILE_OK;
}
static int
compile_massign_opt_lhs(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *lhsn)
{
if (lhsn) {
CHECK(compile_massign_opt_lhs(iseq, ret, lhsn->nd_next));
CHECK(compile_massign_lhs(iseq, ret, lhsn->nd_head));
}
return COMPILE_OK;
}
static int
compile_massign_opt(rb_iseq_t *iseq, LINK_ANCHOR *const ret,
const NODE *rhsn, const NODE *orig_lhsn)
{
VALUE mem[64];
const int memsize = numberof(mem);
int memindex = 0;
int llen = 0, rlen = 0;
int i;
const NODE *lhsn = orig_lhsn;
#define MEMORY(v) { \
int i; \
if (memindex == memsize) return 0; \
for (i=0; i<memindex; i++) { \
if (mem[i] == (v)) return 0; \
} \
mem[memindex++] = (v); \
}
if (rhsn == 0 || nd_type(rhsn) != NODE_ARRAY) {
return 0;
}
while (lhsn) {
const NODE *ln = lhsn->nd_head;
switch (nd_type(ln)) {
case NODE_LASGN:
MEMORY(ln->nd_vid);
break;
case NODE_DASGN:
case NODE_DASGN_CURR:
case NODE_IASGN:
case NODE_CVASGN:
MEMORY(ln->nd_vid);
break;
default:
return 0;
}
lhsn = lhsn->nd_next;
llen++;
}
while (rhsn) {
if (llen <= rlen) {
COMPILE_POPPED(ret, "masgn val (popped)", rhsn->nd_head);
}
else {
COMPILE(ret, "masgn val", rhsn->nd_head);
}
rhsn = rhsn->nd_next;
rlen++;
}
if (llen > rlen) {
for (i=0; i<llen-rlen; i++) {
ADD_INSN(ret, nd_line(orig_lhsn), putnil);
}
}
compile_massign_opt_lhs(iseq, ret, orig_lhsn);
return 1;
}
static void
adjust_stack(rb_iseq_t *iseq, LINK_ANCHOR *const ret, int line, int rlen, int llen)
{
if (rlen < llen) {
do {ADD_INSN(ret, line, putnil);} while (++rlen < llen);
}
else if (rlen > llen) {
do {ADD_INSN(ret, line, pop);} while (--rlen > llen);
}
}
static int
compile_massign(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped)
{
const NODE *rhsn = node->nd_value;
const NODE *splatn = node->nd_args;
const NODE *lhsn = node->nd_head;
int lhs_splat = (splatn && splatn != NODE_SPECIAL_NO_NAME_REST) ? 1 : 0;
if (!popped || splatn || !compile_massign_opt(iseq, ret, rhsn, lhsn)) {
int llen = 0;
int expand = 1;
DECL_ANCHOR(lhsseq);
INIT_ANCHOR(lhsseq);
while (lhsn) {
CHECK(compile_massign_lhs(iseq, lhsseq, lhsn->nd_head));
llen += 1;
lhsn = lhsn->nd_next;
}
COMPILE(ret, "normal masgn rhs", rhsn);
if (!popped) {
ADD_INSN(ret, nd_line(node), dup);
}
else if (!lhs_splat) {
INSN *last = (INSN*)ret->last;
if (IS_INSN(&last->link) &&
IS_INSN_ID(last, newarray) &&
last->operand_size == 1) {
int rlen = FIX2INT(OPERAND_AT(last, 0));
/* special case: assign to aset or attrset */
if (llen == 2) {
POP_ELEMENT(ret);
adjust_stack(iseq, ret, nd_line(node), rlen, llen);
ADD_INSN(ret, nd_line(node), swap);
expand = 0;
}
else if (llen > 2 && llen != rlen) {
POP_ELEMENT(ret);
adjust_stack(iseq, ret, nd_line(node), rlen, llen);
ADD_INSN1(ret, nd_line(node), reverse, INT2FIX(llen));
expand = 0;
}
else if (llen > 2) {
last->insn_id = BIN(reverse);
expand = 0;
}
}
}
if (expand) {
ADD_INSN2(ret, nd_line(node), expandarray,
INT2FIX(llen), INT2FIX(lhs_splat));
}
ADD_SEQ(ret, lhsseq);
if (lhs_splat) {
if (nd_type(splatn) == NODE_POSTARG) {
/*a, b, *r, p1, p2 */
const NODE *postn = splatn->nd_2nd;
const NODE *restn = splatn->nd_1st;
int num = (int)postn->nd_alen;
int flag = 0x02 | ((restn == NODE_SPECIAL_NO_NAME_REST) ? 0x00 : 0x01);
ADD_INSN2(ret, nd_line(splatn), expandarray,
INT2FIX(num), INT2FIX(flag));
if (restn != NODE_SPECIAL_NO_NAME_REST) {
CHECK(compile_massign_lhs(iseq, ret, restn));
}
while (postn) {
CHECK(compile_massign_lhs(iseq, ret, postn->nd_head));
postn = postn->nd_next;
}
}
else {
/* a, b, *r */
CHECK(compile_massign_lhs(iseq, ret, splatn));
}
}
}
return COMPILE_OK;
}
static int
compile_const_prefix(rb_iseq_t *iseq, const NODE *const node,
LINK_ANCHOR *const pref, LINK_ANCHOR *const body)
{
switch (nd_type(node)) {
case NODE_CONST:
debugi("compile_const_prefix - colon", node->nd_vid);
ADD_INSN1(body, nd_line(node), getconstant, ID2SYM(node->nd_vid));
break;
case NODE_COLON3:
debugi("compile_const_prefix - colon3", node->nd_mid);
ADD_INSN(body, nd_line(node), pop);
ADD_INSN1(body, nd_line(node), putobject, rb_cObject);
ADD_INSN1(body, nd_line(node), getconstant, ID2SYM(node->nd_mid));
break;
case NODE_COLON2:
CHECK(compile_const_prefix(iseq, node->nd_head, pref, body));
debugi("compile_const_prefix - colon2", node->nd_mid);
ADD_INSN1(body, nd_line(node), getconstant, ID2SYM(node->nd_mid));
break;
default:
CHECK(COMPILE(pref, "const colon2 prefix", node));
break;
}
return COMPILE_OK;
}
static int
compile_cpath(LINK_ANCHOR *const ret, rb_iseq_t *iseq, const NODE *cpath)
{
if (nd_type(cpath) == NODE_COLON3) {
/* toplevel class ::Foo */
ADD_INSN1(ret, nd_line(cpath), putobject, rb_cObject);
return VM_DEFINECLASS_FLAG_SCOPED;
}
else if (cpath->nd_head) {
/* Bar::Foo */
COMPILE(ret, "nd_else->nd_head", cpath->nd_head);
return VM_DEFINECLASS_FLAG_SCOPED;
}
else {
/* class at cbase Foo */
ADD_INSN1(ret, nd_line(cpath), putspecialobject,
INT2FIX(VM_SPECIAL_OBJECT_CONST_BASE));
return 0;
}
}
#define private_recv_p(node) (nd_type((node)->nd_recv) == NODE_SELF)
static int
defined_expr(rb_iseq_t *iseq, LINK_ANCHOR *const ret,
const NODE *const node, LABEL **lfinish, VALUE needstr);
static int
defined_expr0(rb_iseq_t *iseq, LINK_ANCHOR *const ret,
const NODE *const node, LABEL **lfinish, VALUE needstr)
{
enum defined_type expr_type = 0;
enum node_type type;
switch (type = nd_type(node)) {
/* easy literals */
case NODE_NIL:
expr_type = DEFINED_NIL;
break;
case NODE_SELF:
expr_type = DEFINED_SELF;
break;
case NODE_TRUE:
expr_type = DEFINED_TRUE;
break;
case NODE_FALSE:
expr_type = DEFINED_FALSE;
break;
case NODE_ARRAY:{
const NODE *vals = node;
do {
defined_expr0(iseq, ret, vals->nd_head, lfinish, Qfalse);
if (!lfinish[1]) {
lfinish[1] = NEW_LABEL(nd_line(node));
}
ADD_INSNL(ret, nd_line(node), branchunless, lfinish[1]);
} while ((vals = vals->nd_next) != NULL);
}
case NODE_STR:
case NODE_LIT:
case NODE_ZARRAY:
case NODE_AND:
case NODE_OR:
default:
expr_type = DEFINED_EXPR;
break;
/* variables */
case NODE_LVAR:
case NODE_DVAR:
expr_type = DEFINED_LVAR;
break;
case NODE_IVAR:
ADD_INSN(ret, nd_line(node), putnil);
ADD_INSN3(ret, nd_line(node), defined, INT2FIX(DEFINED_IVAR),
ID2SYM(node->nd_vid), needstr);
return 1;
case NODE_GVAR:
ADD_INSN(ret, nd_line(node), putnil);
ADD_INSN3(ret, nd_line(node), defined, INT2FIX(DEFINED_GVAR),
ID2SYM(node->nd_entry->id), needstr);
return 1;
case NODE_CVAR:
ADD_INSN(ret, nd_line(node), putnil);
ADD_INSN3(ret, nd_line(node), defined, INT2FIX(DEFINED_CVAR),
ID2SYM(node->nd_vid), needstr);
return 1;
case NODE_CONST:
ADD_INSN(ret, nd_line(node), putnil);
ADD_INSN3(ret, nd_line(node), defined, INT2FIX(DEFINED_CONST),
ID2SYM(node->nd_vid), needstr);
return 1;
case NODE_COLON2:
if (!lfinish[1]) {
lfinish[1] = NEW_LABEL(nd_line(node));
}
defined_expr0(iseq, ret, node->nd_head, lfinish, Qfalse);
ADD_INSNL(ret, nd_line(node), branchunless, lfinish[1]);
COMPILE(ret, "defined/colon2#nd_head", node->nd_head);
ADD_INSN3(ret, nd_line(node), defined,
(rb_is_const_id(node->nd_mid) ?
INT2FIX(DEFINED_CONST) : INT2FIX(DEFINED_METHOD)),
ID2SYM(node->nd_mid), needstr);
return 1;
case NODE_COLON3:
ADD_INSN1(ret, nd_line(node), putobject, rb_cObject);
ADD_INSN3(ret, nd_line(node), defined,
INT2FIX(DEFINED_CONST), ID2SYM(node->nd_mid), needstr);
return 1;
/* method dispatch */
case NODE_CALL:
case NODE_OPCALL:
case NODE_VCALL:
case NODE_FCALL:
case NODE_ATTRASGN:{
const int explicit_receiver =
(type == NODE_CALL || type == NODE_OPCALL ||
(type == NODE_ATTRASGN && !private_recv_p(node)));
if (!lfinish[1] && (node->nd_args || explicit_receiver)) {
lfinish[1] = NEW_LABEL(nd_line(node));
}
if (node->nd_args) {
defined_expr0(iseq, ret, node->nd_args, lfinish, Qfalse);
ADD_INSNL(ret, nd_line(node), branchunless, lfinish[1]);
}
if (explicit_receiver) {
defined_expr0(iseq, ret, node->nd_recv, lfinish, Qfalse);
ADD_INSNL(ret, nd_line(node), branchunless, lfinish[1]);
COMPILE(ret, "defined/recv", node->nd_recv);
ADD_INSN3(ret, nd_line(node), defined, INT2FIX(DEFINED_METHOD),
ID2SYM(node->nd_mid), needstr);
}
else {
ADD_INSN(ret, nd_line(node), putself);
ADD_INSN3(ret, nd_line(node), defined, INT2FIX(DEFINED_FUNC),
ID2SYM(node->nd_mid), needstr);
}
return 1;
}
case NODE_YIELD:
ADD_INSN(ret, nd_line(node), putnil);
ADD_INSN3(ret, nd_line(node), defined, INT2FIX(DEFINED_YIELD), 0,
needstr);
return 1;
case NODE_BACK_REF:
case NODE_NTH_REF:
ADD_INSN(ret, nd_line(node), putnil);
ADD_INSN3(ret, nd_line(node), defined, INT2FIX(DEFINED_REF),
INT2FIX((node->nd_nth << 1) | (type == NODE_BACK_REF)),
needstr);
return 1;
case NODE_SUPER:
case NODE_ZSUPER:
ADD_INSN(ret, nd_line(node), putnil);
ADD_INSN3(ret, nd_line(node), defined, INT2FIX(DEFINED_ZSUPER), 0,
needstr);
return 1;
case NODE_OP_ASGN1:
case NODE_OP_ASGN2:
case NODE_OP_ASGN_OR:
case NODE_OP_ASGN_AND:
case NODE_MASGN:
case NODE_LASGN:
case NODE_DASGN:
case NODE_DASGN_CURR:
case NODE_GASGN:
case NODE_IASGN:
case NODE_CDECL:
case NODE_CVASGN:
expr_type = DEFINED_ASGN;
break;
}
if (expr_type) {
if (needstr != Qfalse) {
VALUE str = rb_iseq_defined_string(expr_type);
ADD_INSN1(ret, nd_line(node), putobject, str);
}
else {
ADD_INSN1(ret, nd_line(node), putobject, Qtrue);
}
return 1;
}
return 0;
}
static int
defined_expr(rb_iseq_t *iseq, LINK_ANCHOR *const ret,
const NODE *const node, LABEL **lfinish, VALUE needstr)
{
LINK_ELEMENT *lcur = ret->last;
int done = defined_expr0(iseq, ret, node, lfinish, needstr);
if (lfinish[1]) {
int line = nd_line(node);
LABEL *lstart = NEW_LABEL(line);
LABEL *lend = NEW_LABEL(line);
const rb_iseq_t *rescue;
NODE tmp_node, *node = &tmp_node;
rb_node_init(node, NODE_NIL, 0, 0, 0);
rescue = NEW_CHILD_ISEQ(node,
rb_str_concat(rb_str_new2
("defined guard in "),
iseq->body->location.label),
ISEQ_TYPE_DEFINED_GUARD, 0);
lstart->rescued = LABEL_RESCUE_BEG;
lend->rescued = LABEL_RESCUE_END;
APPEND_LABEL(ret, lcur, lstart);
ADD_LABEL(ret, lend);
ADD_CATCH_ENTRY(CATCH_TYPE_RESCUE, lstart, lend, rescue, lfinish[1]);
}
return done;
}
static int
compile_defined_expr(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, VALUE needstr)
{
const int line = nd_line(node);
if (!node->nd_head) {
VALUE str = rb_iseq_defined_string(DEFINED_NIL);
ADD_INSN1(ret, line, putobject, str);
}
else {
LABEL *lfinish[2];
LINK_ELEMENT *last = ret->last;
lfinish[0] = NEW_LABEL(line);
lfinish[1] = 0;
defined_expr(iseq, ret, node->nd_head, lfinish, needstr);
if (lfinish[1]) {
ELEM_INSERT_NEXT(last, &new_insn_body(iseq, line, BIN(putnil), 0)->link);
ADD_INSN(ret, line, swap);
ADD_INSN(ret, line, pop);
ADD_LABEL(ret, lfinish[1]);
}
ADD_LABEL(ret, lfinish[0]);
}
return COMPILE_OK;
}
static VALUE
make_name_for_block(const rb_iseq_t *orig_iseq)
{
int level = 1;
const rb_iseq_t *iseq = orig_iseq;
if (orig_iseq->body->parent_iseq != 0) {
while (orig_iseq->body->local_iseq != iseq) {
if (iseq->body->type == ISEQ_TYPE_BLOCK) {
level++;
}
iseq = iseq->body->parent_iseq;
}
}
if (level == 1) {
return rb_sprintf("block in %"PRIsVALUE, iseq->body->location.label);
}
else {
return rb_sprintf("block (%d levels) in %"PRIsVALUE, level, iseq->body->location.label);
}
}
static void
push_ensure_entry(rb_iseq_t *iseq,
struct iseq_compile_data_ensure_node_stack *enl,
struct ensure_range *er, const NODE *const node)
{
enl->ensure_node = node;
enl->prev = ISEQ_COMPILE_DATA(iseq)->ensure_node_stack; /* prev */
enl->erange = er;
ISEQ_COMPILE_DATA(iseq)->ensure_node_stack = enl;
}
static void
add_ensure_range(rb_iseq_t *iseq, struct ensure_range *erange,
LABEL *lstart, LABEL *lend)
{
struct ensure_range *ne =
compile_data_alloc(iseq, sizeof(struct ensure_range));
while (erange->next != 0) {
erange = erange->next;
}
ne->next = 0;
ne->begin = lend;
ne->end = erange->end;
erange->end = lstart;
erange->next = ne;
}
static void
add_ensure_iseq(LINK_ANCHOR *const ret, rb_iseq_t *iseq, int is_return)
{
struct iseq_compile_data_ensure_node_stack *enlp =
ISEQ_COMPILE_DATA(iseq)->ensure_node_stack;
struct iseq_compile_data_ensure_node_stack *prev_enlp = enlp;
DECL_ANCHOR(ensure);
INIT_ANCHOR(ensure);
while (enlp) {
if (enlp->erange != NULL) {
DECL_ANCHOR(ensure_part);
LABEL *lstart = NEW_LABEL(0);
LABEL *lend = NEW_LABEL(0);
INIT_ANCHOR(ensure_part);
add_ensure_range(iseq, enlp->erange, lstart, lend);
ISEQ_COMPILE_DATA(iseq)->ensure_node_stack = enlp->prev;
ADD_LABEL(ensure_part, lstart);
COMPILE_POPPED(ensure_part, "ensure part", enlp->ensure_node);
ADD_LABEL(ensure_part, lend);
ADD_SEQ(ensure, ensure_part);
}
else {
if (!is_return) {
break;
}
}
enlp = enlp->prev;
}
ISEQ_COMPILE_DATA(iseq)->ensure_node_stack = prev_enlp;
ADD_SEQ(ret, ensure);
}
static VALUE
setup_args(rb_iseq_t *iseq, LINK_ANCHOR *const args, const NODE *argn,
unsigned int *flag, struct rb_call_info_kw_arg **keywords)
{
VALUE argc = INT2FIX(0);
int nsplat = 0;
DECL_ANCHOR(arg_block);
DECL_ANCHOR(args_splat);
INIT_ANCHOR(arg_block);
INIT_ANCHOR(args_splat);
if (argn && nd_type(argn) == NODE_BLOCK_PASS) {
COMPILE(arg_block, "block", argn->nd_body);
*flag |= VM_CALL_ARGS_BLOCKARG;
argn = argn->nd_head;
}
setup_argn:
if (argn) {
switch (nd_type(argn)) {
case NODE_SPLAT: {
COMPILE(args, "args (splat)", argn->nd_head);
ADD_INSN1(args, nd_line(argn), splatarray, nsplat ? Qtrue : Qfalse);
argc = INT2FIX(1);
nsplat++;
*flag |= VM_CALL_ARGS_SPLAT;
break;
}
case NODE_ARGSCAT:
case NODE_ARGSPUSH: {
int next_is_array = (nd_type(argn->nd_head) == NODE_ARRAY);
DECL_ANCHOR(tmp);
INIT_ANCHOR(tmp);
COMPILE(tmp, "args (cat: splat)", argn->nd_body);
if (nd_type(argn) == NODE_ARGSCAT) {
ADD_INSN1(tmp, nd_line(argn), splatarray, nsplat ? Qtrue : Qfalse);
}
else {
ADD_INSN1(tmp, nd_line(argn), newarray, INT2FIX(1));
}
INSERT_LIST(args_splat, tmp);
nsplat++;
*flag |= VM_CALL_ARGS_SPLAT;
if (nd_type(argn->nd_body) == NODE_HASH)
*flag |= VM_CALL_KW_SPLAT;
if (next_is_array) {
int len = compile_array(iseq, args, argn->nd_head, COMPILE_ARRAY_TYPE_ARGS, NULL, flag, FALSE);
if (len < 0) return Qnil;
argc = INT2FIX(len + 1);
}
else {
argn = argn->nd_head;
goto setup_argn;
}
break;
}
case NODE_ARRAY:
{
int len = compile_array(iseq, args, argn, COMPILE_ARRAY_TYPE_ARGS, keywords, flag, FALSE);
if (len < 0) return Qnil;
argc = INT2FIX(len);
break;
}
default: {
UNKNOWN_NODE("setup_arg", argn, Qnil);
}
}
}
if (nsplat > 1) {
int i;
for (i=1; i<nsplat; i++) {
ADD_INSN(args_splat, nd_line(argn), concatarray);
}
}
if (!LIST_INSN_SIZE_ZERO(args_splat)) {
ADD_SEQ(args, args_splat);
}
if (*flag & VM_CALL_ARGS_BLOCKARG) {
if (LIST_INSN_SIZE_ONE(arg_block)) {
LINK_ELEMENT *elem = FIRST_ELEMENT(arg_block);
if (elem->type == ISEQ_ELEMENT_INSN) {
INSN *iobj = (INSN *)elem;
if (iobj->insn_id == BIN(getblockparam)) {
iobj->insn_id = BIN(getlocal);
*flag |= VM_CALL_ARGS_BLOCKARG_BLOCKPARAM;
}
}
}
ADD_SEQ(args, arg_block);
}
return argc;
}
static VALUE
build_postexe_iseq(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *body)
{
int line = nd_line(body);
VALUE argc = INT2FIX(0);
const rb_iseq_t *block = NEW_CHILD_ISEQ(body, make_name_for_block(iseq->body->parent_iseq), ISEQ_TYPE_BLOCK, line);
ADD_INSN1(ret, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
ADD_CALL_WITH_BLOCK(ret, line, id_core_set_postexe, argc, block);
iseq_set_local_table(iseq, 0);
return Qnil;
}
static void
compile_named_capture_assign(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node)
{
const NODE *vars;
LINK_ELEMENT *last;
int line = nd_line(node);
LABEL *fail_label = NEW_LABEL(line), *end_label = NEW_LABEL(line);
#if !(defined(NAMED_CAPTURE_BY_SVAR) && NAMED_CAPTURE_BY_SVAR-0)
ADD_INSN1(ret, line, getglobal, ((VALUE)rb_global_entry(idBACKREF) | 1));
#else
ADD_INSN2(ret, line, getspecial, INT2FIX(1) /* '~' */, INT2FIX(0));
#endif
ADD_INSN(ret, line, dup);
ADD_INSNL(ret, line, branchunless, fail_label);
for (vars = node; vars; vars = vars->nd_next) {
INSN *cap;
if (vars->nd_next) {
ADD_INSN(ret, line, dup);
}
last = ret->last;
COMPILE_POPPED(ret, "capture", vars->nd_head);
last = last->next; /* putobject :var */
cap = new_insn_send(iseq, line, idAREF, INT2FIX(1),
NULL, INT2FIX(0), NULL);
ELEM_INSERT_PREV(last->next, (LINK_ELEMENT *)cap);
#if !defined(NAMED_CAPTURE_SINGLE_OPT) || NAMED_CAPTURE_SINGLE_OPT-0
if (!vars->nd_next && vars == node) {
/* only one name */
DECL_ANCHOR(nom);
INIT_ANCHOR(nom);
ADD_INSNL(nom, line, jump, end_label);
ADD_LABEL(nom, fail_label);
# if 0 /* $~ must be MatchData or nil */
ADD_INSN(nom, line, pop);
ADD_INSN(nom, line, putnil);
# endif
ADD_LABEL(nom, end_label);
(nom->last->next = cap->link.next)->prev = nom->last;
(cap->link.next = nom->anchor.next)->prev = &cap->link;
return;
}
#endif
}
ADD_INSNL(ret, line, jump, end_label);
ADD_LABEL(ret, fail_label);
ADD_INSN(ret, line, pop);
for (vars = node; vars; vars = vars->nd_next) {
last = ret->last;
COMPILE_POPPED(ret, "capture", vars->nd_head);
last = last->next; /* putobject :var */
((INSN*)last)->insn_id = BIN(putnil);
((INSN*)last)->operand_size = 0;
}
ADD_LABEL(ret, end_label);
}
static int
number_literal_p(const NODE *n)
{
return (n && nd_type(n) == NODE_LIT && RB_INTEGER_TYPE_P(n->nd_lit));
}
static int
compile_if(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped, const enum node_type type)
{
const NODE *const node_body = type == NODE_IF ? node->nd_body : node->nd_else;
const NODE *const node_else = type == NODE_IF ? node->nd_else : node->nd_body;
const int line = nd_line(node);
const int lineno = nd_first_lineno(node);
const int column = nd_first_column(node);
const int last_lineno = nd_last_lineno(node);
const int last_column = nd_last_column(node);
DECL_ANCHOR(cond_seq);
DECL_ANCHOR(then_seq);
DECL_ANCHOR(else_seq);
LABEL *then_label, *else_label, *end_label;
VALUE branches = 0;
INIT_ANCHOR(cond_seq);
INIT_ANCHOR(then_seq);
INIT_ANCHOR(else_seq);
then_label = NEW_LABEL(line);
else_label = NEW_LABEL(line);
end_label = 0;
compile_branch_condition(iseq, cond_seq, node->nd_cond,
then_label, else_label);
CHECK(COMPILE_(then_seq, "then", node_body, popped));
CHECK(COMPILE_(else_seq, "else", node_else, popped));
ADD_SEQ(ret, cond_seq);
if (then_label->refcnt && else_label->refcnt) {
DECL_BRANCH_BASE(branches, lineno, column, last_lineno, last_column, type == NODE_IF ? "if" : "unless");
}
if (then_label->refcnt) {
ADD_LABEL(ret, then_label);
if (else_label->refcnt) {
ADD_TRACE_BRANCH_COVERAGE(
ret,
node_body ? nd_first_lineno(node_body) : lineno,
node_body ? nd_first_column(node_body) : column,
node_body ? nd_last_lineno(node_body) : last_lineno,
node_body ? nd_last_column(node_body) : last_column,
type == NODE_IF ? "then" : "else",
branches);
}
ADD_SEQ(ret, then_seq);
end_label = NEW_LABEL(line);
ADD_INSNL(ret, line, jump, end_label);
}
if (else_label->refcnt) {
ADD_LABEL(ret, else_label);
if (then_label->refcnt) {
ADD_TRACE_BRANCH_COVERAGE(
ret,
node_else ? nd_first_lineno(node_else) : lineno,
node_else ? nd_first_column(node_else) : column,
node_else ? nd_last_lineno(node_else) : last_lineno,
node_else ? nd_last_column(node_else) : last_column,
type == NODE_IF ? "else" : "then",
branches);
}
ADD_SEQ(ret, else_seq);
}
if (end_label) {
ADD_LABEL(ret, end_label);
}
return COMPILE_OK;
}
static int
compile_case(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const orig_node, int popped)
{
const NODE *vals;
const NODE *node = orig_node;
LABEL *endlabel, *elselabel;
DECL_ANCHOR(head);
DECL_ANCHOR(body_seq);
DECL_ANCHOR(cond_seq);
int only_special_literals = 1;
VALUE literals = rb_hash_new();
int line, lineno, column, last_lineno, last_column;
enum node_type type;
VALUE branches = 0;
INIT_ANCHOR(head);
INIT_ANCHOR(body_seq);
INIT_ANCHOR(cond_seq);
rb_hash_tbl_raw(literals)->type = &cdhash_type;
CHECK(COMPILE(head, "case base", node->nd_head));
DECL_BRANCH_BASE(branches, nd_first_lineno(node), nd_first_column(node), nd_last_lineno(node), nd_last_column(node), "case");
node = node->nd_body;
type = nd_type(node);
line = nd_line(node);
lineno = nd_first_lineno(node);
column = nd_first_column(node);
last_lineno = nd_last_lineno(node);
last_column = nd_last_column(node);
if (type != NODE_WHEN) {
COMPILE_ERROR(ERROR_ARGS "NODE_CASE: unexpected node. must be NODE_WHEN, but %s", ruby_node_name(type));
return COMPILE_NG;
}
endlabel = NEW_LABEL(line);
elselabel = NEW_LABEL(line);
ADD_SEQ(ret, head); /* case VAL */
while (type == NODE_WHEN) {
LABEL *l1;
l1 = NEW_LABEL(line);
ADD_LABEL(body_seq, l1);
ADD_INSN(body_seq, line, pop);
ADD_TRACE_BRANCH_COVERAGE(
body_seq,
node->nd_body ? nd_first_lineno(node->nd_body) : lineno,
node->nd_body ? nd_first_column(node->nd_body) : column,
node->nd_body ? nd_last_lineno(node->nd_body) : last_lineno,
node->nd_body ? nd_last_column(node->nd_body) : last_column,
"when",
branches);
CHECK(COMPILE_(body_seq, "when body", node->nd_body, popped));
ADD_INSNL(body_seq, line, jump, endlabel);
vals = node->nd_head;
if (vals) {
switch (nd_type(vals)) {
case NODE_ARRAY:
only_special_literals = when_vals(iseq, cond_seq, vals, l1, only_special_literals, literals);
break;
case NODE_SPLAT:
case NODE_ARGSCAT:
case NODE_ARGSPUSH:
only_special_literals = 0;
ADD_INSN (cond_seq, nd_line(vals), dup);
CHECK(COMPILE(cond_seq, "when/cond splat", vals));
ADD_INSN1(cond_seq, nd_line(vals), checkmatch, INT2FIX(VM_CHECKMATCH_TYPE_CASE | VM_CHECKMATCH_ARRAY));
ADD_INSNL(cond_seq, nd_line(vals), branchif, l1);
break;
default:
UNKNOWN_NODE("NODE_CASE", vals, COMPILE_NG);
}
}
else {
EXPECT_NODE_NONULL("NODE_CASE", node, NODE_ARRAY, COMPILE_NG);
}
node = node->nd_next;
if (!node) {
break;
}
type = nd_type(node);
line = nd_line(node);
lineno = nd_first_lineno(node);
column = nd_first_column(node);
last_lineno = nd_last_lineno(node);
last_column = nd_last_column(node);
}
/* else */
if (node) {
ADD_LABEL(cond_seq, elselabel);
ADD_INSN(cond_seq, line, pop);
ADD_TRACE_BRANCH_COVERAGE(cond_seq, nd_first_lineno(node), nd_first_column(node), nd_last_lineno(node), nd_last_column(node), "else", branches);
CHECK(COMPILE_(cond_seq, "else", node, popped));
ADD_INSNL(cond_seq, line, jump, endlabel);
}
else {
debugs("== else (implicit)\n");
ADD_LABEL(cond_seq, elselabel);
ADD_INSN(cond_seq, nd_line(orig_node), pop);
ADD_TRACE_BRANCH_COVERAGE(cond_seq, nd_first_lineno(orig_node), nd_first_column(orig_node), nd_last_lineno(orig_node), nd_last_column(orig_node), "else", branches);
if (!popped) {
ADD_INSN(cond_seq, nd_line(orig_node), putnil);
}
ADD_INSNL(cond_seq, nd_line(orig_node), jump, endlabel);
}
if (only_special_literals) {
iseq_add_mark_object(iseq, literals);
ADD_INSN(ret, nd_line(orig_node), dup);
ADD_INSN2(ret, nd_line(orig_node), opt_case_dispatch, literals, elselabel);
LABEL_REF(elselabel);
}
ADD_SEQ(ret, cond_seq);
ADD_SEQ(ret, body_seq);
ADD_LABEL(ret, endlabel);
return COMPILE_OK;
}
static int
compile_case2(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const orig_node, int popped)
{
const NODE *vals;
const NODE *val;
const NODE *node = orig_node->nd_body;
LABEL *endlabel;
DECL_ANCHOR(body_seq);
VALUE branches = 0;
DECL_BRANCH_BASE(branches, nd_first_lineno(orig_node), nd_first_column(orig_node), nd_last_lineno(orig_node), nd_last_column(orig_node), "case");
INIT_ANCHOR(body_seq);
endlabel = NEW_LABEL(nd_line(node));
while (node && nd_type(node) == NODE_WHEN) {
const int line = nd_line(node);
const int lineno = nd_first_lineno(node);
const int column = nd_first_column(node);
const int last_lineno = nd_last_lineno(node);
const int last_column = nd_last_column(node);
LABEL *l1 = NEW_LABEL(line);
ADD_LABEL(body_seq, l1);
ADD_TRACE_BRANCH_COVERAGE(
body_seq,
node->nd_body ? nd_first_lineno(node->nd_body) : lineno,
node->nd_body ? nd_first_column(node->nd_body) : column,
node->nd_body ? nd_last_lineno(node->nd_body) : last_lineno,
node->nd_body ? nd_last_column(node->nd_body) : last_column,
"when",
branches);
CHECK(COMPILE_(body_seq, "when", node->nd_body, popped));
ADD_INSNL(body_seq, line, jump, endlabel);
vals = node->nd_head;
if (!vals) {
COMPILE_ERROR(ERROR_ARGS "NODE_WHEN: must be NODE_ARRAY, but 0");
return COMPILE_NG;
}
switch (nd_type(vals)) {
case NODE_ARRAY:
while (vals) {
val = vals->nd_head;
CHECK(COMPILE(ret, "when2", val));
ADD_INSNL(ret, nd_line(val), branchif, l1);
vals = vals->nd_next;
}
break;
case NODE_SPLAT:
case NODE_ARGSCAT:
case NODE_ARGSPUSH:
ADD_INSN(ret, nd_line(vals), putnil);
CHECK(COMPILE(ret, "when2/cond splat", vals));
ADD_INSN1(ret, nd_line(vals), checkmatch, INT2FIX(VM_CHECKMATCH_TYPE_WHEN | VM_CHECKMATCH_ARRAY));
ADD_INSNL(ret, nd_line(vals), branchif, l1);
break;
default:
UNKNOWN_NODE("NODE_WHEN", vals, COMPILE_NG);
}
node = node->nd_next;
}
/* else */
ADD_TRACE_BRANCH_COVERAGE(
ret,
node ? nd_first_lineno(node) : nd_first_lineno(orig_node),
node ? nd_first_column(node) : nd_first_column(orig_node),
node ? nd_last_lineno(node) : nd_last_lineno(orig_node),
node ? nd_last_column(node) : nd_last_column(orig_node),
"else",
branches);
CHECK(COMPILE_(ret, "else", node, popped));
ADD_INSNL(ret, nd_line(orig_node), jump, endlabel);
ADD_SEQ(ret, body_seq);
ADD_LABEL(ret, endlabel);
return COMPILE_OK;
}
static int
compile_loop(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped, const enum node_type type)
{
const int line = (int)nd_line(node);
const int lineno = nd_first_lineno(node);
const int column = nd_first_column(node);
const int last_lineno = nd_last_lineno(node);
const int last_column = nd_last_column(node);
LABEL *prev_start_label = ISEQ_COMPILE_DATA(iseq)->start_label;
LABEL *prev_end_label = ISEQ_COMPILE_DATA(iseq)->end_label;
LABEL *prev_redo_label = ISEQ_COMPILE_DATA(iseq)->redo_label;
int prev_loopval_popped = ISEQ_COMPILE_DATA(iseq)->loopval_popped;
VALUE branches = 0;
struct iseq_compile_data_ensure_node_stack enl;
LABEL *next_label = ISEQ_COMPILE_DATA(iseq)->start_label = NEW_LABEL(line); /* next */
LABEL *redo_label = ISEQ_COMPILE_DATA(iseq)->redo_label = NEW_LABEL(line); /* redo */
LABEL *break_label = ISEQ_COMPILE_DATA(iseq)->end_label = NEW_LABEL(line); /* break */
LABEL *end_label = NEW_LABEL(line);
LABEL *adjust_label = NEW_LABEL(line);
LABEL *next_catch_label = NEW_LABEL(line);
LABEL *tmp_label = NULL;
ISEQ_COMPILE_DATA(iseq)->loopval_popped = 0;
push_ensure_entry(iseq, &enl, NULL, NULL);
if (node->nd_state == 1) {
ADD_INSNL(ret, line, jump, next_label);
}
else {
tmp_label = NEW_LABEL(line);
ADD_INSNL(ret, line, jump, tmp_label);
}
ADD_LABEL(ret, adjust_label);
ADD_INSN(ret, line, putnil);
ADD_LABEL(ret, next_catch_label);
ADD_INSN(ret, line, pop);
ADD_INSNL(ret, line, jump, next_label);
if (tmp_label) ADD_LABEL(ret, tmp_label);
ADD_LABEL(ret, redo_label);
DECL_BRANCH_BASE(branches, lineno, column, last_lineno, last_column, type == NODE_WHILE ? "while" : "until");
ADD_TRACE_BRANCH_COVERAGE(
ret,
node->nd_body ? nd_first_lineno(node->nd_body) : lineno,
node->nd_body ? nd_first_column(node->nd_body) : column,
node->nd_body ? nd_last_lineno(node->nd_body) : last_lineno,
node->nd_body ? nd_last_column(node->nd_body) : last_column,
"body",
branches);
CHECK(COMPILE_POPPED(ret, "while body", node->nd_body));
ADD_LABEL(ret, next_label); /* next */
if (type == NODE_WHILE) {
compile_branch_condition(iseq, ret, node->nd_cond,
redo_label, end_label);
}
else {
/* until */
compile_branch_condition(iseq, ret, node->nd_cond,
end_label, redo_label);
}
ADD_LABEL(ret, end_label);
ADD_ADJUST_RESTORE(ret, adjust_label);
if (node->nd_state == Qundef) {
/* ADD_INSN(ret, line, putundef); */
COMPILE_ERROR(ERROR_ARGS "unsupported: putundef");
return COMPILE_NG;
}
else {
ADD_INSN(ret, line, putnil);
}
ADD_LABEL(ret, break_label); /* break */
if (popped) {
ADD_INSN(ret, line, pop);
}
ADD_CATCH_ENTRY(CATCH_TYPE_BREAK, redo_label, break_label, NULL,
break_label);
ADD_CATCH_ENTRY(CATCH_TYPE_NEXT, redo_label, break_label, NULL,
next_catch_label);
ADD_CATCH_ENTRY(CATCH_TYPE_REDO, redo_label, break_label, NULL,
ISEQ_COMPILE_DATA(iseq)->redo_label);
ISEQ_COMPILE_DATA(iseq)->start_label = prev_start_label;
ISEQ_COMPILE_DATA(iseq)->end_label = prev_end_label;
ISEQ_COMPILE_DATA(iseq)->redo_label = prev_redo_label;
ISEQ_COMPILE_DATA(iseq)->loopval_popped = prev_loopval_popped;
ISEQ_COMPILE_DATA(iseq)->ensure_node_stack = ISEQ_COMPILE_DATA(iseq)->ensure_node_stack->prev;
return COMPILE_OK;
}
static int
compile_iter(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped)
{
const int line = nd_line(node);
const rb_iseq_t *prevblock = ISEQ_COMPILE_DATA(iseq)->current_block;
LABEL *retry_label = NEW_LABEL(line);
LABEL *retry_end_l = NEW_LABEL(line);
const rb_iseq_t *child_iseq;
ADD_LABEL(ret, retry_label);
if (nd_type(node) == NODE_FOR) {
CHECK(COMPILE(ret, "iter caller (for)", node->nd_iter));
ISEQ_COMPILE_DATA(iseq)->current_block = child_iseq =
NEW_CHILD_ISEQ(node->nd_body, make_name_for_block(iseq),
ISEQ_TYPE_BLOCK, line);
ADD_SEND_WITH_BLOCK(ret, line, idEach, INT2FIX(0), child_iseq);
}
else {
ISEQ_COMPILE_DATA(iseq)->current_block = child_iseq =
NEW_CHILD_ISEQ(node->nd_body, make_name_for_block(iseq),
ISEQ_TYPE_BLOCK, line);
CHECK(COMPILE(ret, "iter caller", node->nd_iter));
}
ADD_LABEL(ret, retry_end_l);
if (popped) {
ADD_INSN(ret, line, pop);
}
ISEQ_COMPILE_DATA(iseq)->current_block = prevblock;
ADD_CATCH_ENTRY(CATCH_TYPE_BREAK, retry_label, retry_end_l, child_iseq, retry_end_l);
return COMPILE_OK;
}
static int
compile_for(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped)
{
const int line = nd_line(node);
if (node->nd_var) {
/* massign to var in "for"
* args.length == 1 && Array === (tmp = args[0]) ? tmp : args
*/
const NODE *var = node->nd_var;
LABEL *not_single = NEW_LABEL(nd_line(var));
LABEL *not_ary = NEW_LABEL(nd_line(var));
CHECK(COMPILE(ret, "for var", var));
ADD_INSN(ret, line, dup);
ADD_CALL(ret, line, idLength, INT2FIX(0));
ADD_INSN1(ret, line, putobject, INT2FIX(1));
ADD_CALL(ret, line, idEq, INT2FIX(1));
ADD_INSNL(ret, line, branchunless, not_single);
ADD_INSN(ret, line, dup);
ADD_INSN1(ret, line, putobject, INT2FIX(0));
ADD_CALL(ret, line, idAREF, INT2FIX(1));
ADD_INSN1(ret, line, putobject, rb_cArray);
ADD_INSN1(ret, line, topn, INT2FIX(1));
ADD_CALL(ret, line, idEqq, INT2FIX(1));
ADD_INSNL(ret, line, branchunless, not_ary);
ADD_INSN(ret, line, swap);
ADD_LABEL(ret, not_ary);
ADD_INSN(ret, line, pop);
ADD_LABEL(ret, not_single);
return COMPILE_OK;
}
else {
return compile_iter(iseq, ret, node, popped);
}
}
static int
compile_break(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped)
{
const int line = nd_line(node);
unsigned long level = 0;
if (ISEQ_COMPILE_DATA(iseq)->redo_label != 0) {
/* while/until */
LABEL *splabel = NEW_LABEL(0);
ADD_LABEL(ret, splabel);
ADD_ADJUST(ret, line, ISEQ_COMPILE_DATA(iseq)->redo_label);
CHECK(COMPILE_(ret, "break val (while/until)", node->nd_stts,
ISEQ_COMPILE_DATA(iseq)->loopval_popped));
add_ensure_iseq(ret, iseq, 0);
ADD_INSNL(ret, line, jump, ISEQ_COMPILE_DATA(iseq)->end_label);
ADD_ADJUST_RESTORE(ret, splabel);
if (!popped) {
ADD_INSN(ret, line, putnil);
}
}
else if (iseq->body->type == ISEQ_TYPE_BLOCK) {
break_by_insn:
/* escape from block */
CHECK(COMPILE(ret, "break val (block)", node->nd_stts));
ADD_INSN1(ret, line, throw, INT2FIX(level | TAG_BREAK));
if (popped) {
ADD_INSN(ret, line, pop);
}
}
else if (iseq->body->type == ISEQ_TYPE_EVAL) {
break_in_eval:
COMPILE_ERROR(ERROR_ARGS "Can't escape from eval with break");
return COMPILE_NG;
}
else {
const rb_iseq_t *ip = iseq->body->parent_iseq;
while (ip) {
if (!ISEQ_COMPILE_DATA(ip)) {
ip = 0;
break;
}
level++;
if (ISEQ_COMPILE_DATA(ip)->redo_label != 0) {
level = VM_THROW_NO_ESCAPE_FLAG;
goto break_by_insn;
}
else if (ip->body->type == ISEQ_TYPE_BLOCK) {
level <<= VM_THROW_LEVEL_SHIFT;
goto break_by_insn;
}
else if (ip->body->type == ISEQ_TYPE_EVAL) {
goto break_in_eval;
}
ip = ip->body->parent_iseq;
}
COMPILE_ERROR(ERROR_ARGS "Invalid break");
return COMPILE_NG;
}
return COMPILE_OK;
}
static int
compile_next(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped)
{
const int line = nd_line(node);
unsigned long level = 0;
if (ISEQ_COMPILE_DATA(iseq)->redo_label != 0) {
LABEL *splabel = NEW_LABEL(0);
debugs("next in while loop\n");
ADD_LABEL(ret, splabel);
CHECK(COMPILE(ret, "next val/valid syntax?", node->nd_stts));
add_ensure_iseq(ret, iseq, 0);
ADD_ADJUST(ret, line, ISEQ_COMPILE_DATA(iseq)->redo_label);
ADD_INSNL(ret, line, jump, ISEQ_COMPILE_DATA(iseq)->start_label);
ADD_ADJUST_RESTORE(ret, splabel);
if (!popped) {
ADD_INSN(ret, line, putnil);
}
}
else if (ISEQ_COMPILE_DATA(iseq)->end_label) {
LABEL *splabel = NEW_LABEL(0);
debugs("next in block\n");
ADD_LABEL(ret, splabel);
ADD_ADJUST(ret, line, ISEQ_COMPILE_DATA(iseq)->start_label);
CHECK(COMPILE(ret, "next val", node->nd_stts));
add_ensure_iseq(ret, iseq, 0);
ADD_INSNL(ret, line, jump, ISEQ_COMPILE_DATA(iseq)->end_label);
ADD_ADJUST_RESTORE(ret, splabel);
if (!popped) {
ADD_INSN(ret, line, putnil);
}
}
else if (iseq->body->type == ISEQ_TYPE_EVAL) {
next_in_eval:
COMPILE_ERROR(ERROR_ARGS "Can't escape from eval with next");
return COMPILE_NG;
}
else {
const rb_iseq_t *ip = iseq;
while (ip) {
if (!ISEQ_COMPILE_DATA(ip)) {
ip = 0;
break;
}
level = VM_THROW_NO_ESCAPE_FLAG;
if (ISEQ_COMPILE_DATA(ip)->redo_label != 0) {
/* while loop */
break;
}
else if (ip->body->type == ISEQ_TYPE_BLOCK) {
break;
}
else if (ip->body->type == ISEQ_TYPE_EVAL) {
goto next_in_eval;
}
ip = ip->body->parent_iseq;
}
if (ip != 0) {
CHECK(COMPILE(ret, "next val", node->nd_stts));
ADD_INSN1(ret, line, throw, INT2FIX(level | TAG_NEXT));
if (popped) {
ADD_INSN(ret, line, pop);
}
}
else {
COMPILE_ERROR(ERROR_ARGS "Invalid next");
return COMPILE_NG;
}
}
return COMPILE_OK;
}
static int
compile_redo(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped)
{
const int line = nd_line(node);
if (ISEQ_COMPILE_DATA(iseq)->redo_label) {
LABEL *splabel = NEW_LABEL(0);
debugs("redo in while");
ADD_LABEL(ret, splabel);
ADD_ADJUST(ret, line, ISEQ_COMPILE_DATA(iseq)->redo_label);
add_ensure_iseq(ret, iseq, 0);
ADD_INSNL(ret, line, jump, ISEQ_COMPILE_DATA(iseq)->redo_label);
ADD_ADJUST_RESTORE(ret, splabel);
if (!popped) {
ADD_INSN(ret, line, putnil);
}
}
else if (iseq->body->type == ISEQ_TYPE_EVAL) {
redo_in_eval:
COMPILE_ERROR(ERROR_ARGS "Can't escape from eval with redo");
return COMPILE_NG;
}
else if (ISEQ_COMPILE_DATA(iseq)->start_label) {
LABEL *splabel = NEW_LABEL(0);
debugs("redo in block");
ADD_LABEL(ret, splabel);
add_ensure_iseq(ret, iseq, 0);
ADD_ADJUST(ret, line, ISEQ_COMPILE_DATA(iseq)->start_label);
ADD_INSNL(ret, line, jump, ISEQ_COMPILE_DATA(iseq)->start_label);
ADD_ADJUST_RESTORE(ret, splabel);
if (!popped) {
ADD_INSN(ret, line, putnil);
}
}
else {
const rb_iseq_t *ip = iseq;
const unsigned long level = VM_THROW_NO_ESCAPE_FLAG;
while (ip) {
if (!ISEQ_COMPILE_DATA(ip)) {
ip = 0;
break;
}
if (ISEQ_COMPILE_DATA(ip)->redo_label != 0) {
break;
}
else if (ip->body->type == ISEQ_TYPE_BLOCK) {
break;
}
else if (ip->body->type == ISEQ_TYPE_EVAL) {
goto redo_in_eval;
}
ip = ip->body->parent_iseq;
}
if (ip != 0) {
ADD_INSN(ret, line, putnil);
ADD_INSN1(ret, line, throw, INT2FIX(level | TAG_REDO));
if (popped) {
ADD_INSN(ret, line, pop);
}
}
else {
COMPILE_ERROR(ERROR_ARGS "Invalid redo");
return COMPILE_NG;
}
}
return COMPILE_OK;
}
static int
compile_retry(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped)
{
const int line = nd_line(node);
if (iseq->body->type == ISEQ_TYPE_RESCUE) {
ADD_INSN(ret, line, putnil);
ADD_INSN1(ret, line, throw, INT2FIX(TAG_RETRY));
if (popped) {
ADD_INSN(ret, line, pop);
}
}
else {
COMPILE_ERROR(ERROR_ARGS "Invalid retry");
return COMPILE_NG;
}
return COMPILE_OK;
}
static int
compile_rescue(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped)
{
const int line = nd_line(node);
LABEL *lstart = NEW_LABEL(line);
LABEL *lend = NEW_LABEL(line);
LABEL *lcont = NEW_LABEL(line);
const rb_iseq_t *rescue = NEW_CHILD_ISEQ(node->nd_resq,
rb_str_concat(rb_str_new2("rescue in "), iseq->body->location.label),
ISEQ_TYPE_RESCUE, line);
lstart->rescued = LABEL_RESCUE_BEG;
lend->rescued = LABEL_RESCUE_END;
ADD_LABEL(ret, lstart);
CHECK(COMPILE(ret, "rescue head", node->nd_head));
ADD_LABEL(ret, lend);
if (node->nd_else) {
ADD_INSN(ret, line, pop);
CHECK(COMPILE(ret, "rescue else", node->nd_else));
}
ADD_INSN(ret, line, nop);
ADD_LABEL(ret, lcont);
if (popped) {
ADD_INSN(ret, line, pop);
}
/* register catch entry */
ADD_CATCH_ENTRY(CATCH_TYPE_RESCUE, lstart, lend, rescue, lcont);
ADD_CATCH_ENTRY(CATCH_TYPE_RETRY, lend, lcont, NULL, lstart);
return COMPILE_OK;
}
static int
compile_resbody(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped)
{
const int line = nd_line(node);
const NODE *resq = node;
const NODE *narg;
LABEL *label_miss, *label_hit;
while (resq) {
label_miss = NEW_LABEL(line);
label_hit = NEW_LABEL(line);
narg = resq->nd_args;
if (narg) {
switch (nd_type(narg)) {
case NODE_ARRAY:
while (narg) {
ADD_GETLOCAL(ret, line, LVAR_ERRINFO, 0);
CHECK(COMPILE(ret, "rescue arg", narg->nd_head));
ADD_INSN1(ret, line, checkmatch, INT2FIX(VM_CHECKMATCH_TYPE_RESCUE));
ADD_INSNL(ret, line, branchif, label_hit);
narg = narg->nd_next;
}
break;
case NODE_SPLAT:
case NODE_ARGSCAT:
case NODE_ARGSPUSH:
ADD_GETLOCAL(ret, line, LVAR_ERRINFO, 0);
CHECK(COMPILE(ret, "rescue/cond splat", narg));
ADD_INSN1(ret, line, checkmatch, INT2FIX(VM_CHECKMATCH_TYPE_RESCUE | VM_CHECKMATCH_ARRAY));
ADD_INSNL(ret, line, branchif, label_hit);
break;
default:
UNKNOWN_NODE("NODE_RESBODY", narg, COMPILE_NG);
}
}
else {
ADD_GETLOCAL(ret, line, LVAR_ERRINFO, 0);
ADD_INSN1(ret, line, putobject, rb_eStandardError);
ADD_INSN1(ret, line, checkmatch, INT2FIX(VM_CHECKMATCH_TYPE_RESCUE));
ADD_INSNL(ret, line, branchif, label_hit);
}
ADD_INSNL(ret, line, jump, label_miss);
ADD_LABEL(ret, label_hit);
CHECK(COMPILE(ret, "resbody body", resq->nd_body));
if (ISEQ_COMPILE_DATA(iseq)->option->tailcall_optimization) {
ADD_INSN(ret, line, nop);
}
ADD_INSN(ret, line, leave);
ADD_LABEL(ret, label_miss);
resq = resq->nd_head;
}
return COMPILE_OK;
}
static int
compile_ensure(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped)
{
const int line = nd_line(node);
DECL_ANCHOR(ensr);
const rb_iseq_t *ensure = NEW_CHILD_ISEQ(node->nd_ensr,
rb_str_concat(rb_str_new2 ("ensure in "), iseq->body->location.label),
ISEQ_TYPE_ENSURE, line);
LABEL *lstart = NEW_LABEL(line);
LABEL *lend = NEW_LABEL(line);
LABEL *lcont = NEW_LABEL(line);
LINK_ELEMENT *last;
int last_leave = 0;
struct ensure_range er;
struct iseq_compile_data_ensure_node_stack enl;
struct ensure_range *erange;
INIT_ANCHOR(ensr);
CHECK(COMPILE_POPPED(ensr, "ensure ensr", node->nd_ensr));
last = ensr->last;
last_leave = last && IS_INSN(last) && IS_INSN_ID(last, leave);
er.begin = lstart;
er.end = lend;
er.next = 0;
push_ensure_entry(iseq, &enl, &er, node->nd_ensr);
ADD_LABEL(ret, lstart);
CHECK(COMPILE_(ret, "ensure head", node->nd_head, (popped | last_leave)));
ADD_LABEL(ret, lend);
if (LIST_INSN_SIZE_ZERO(ensr)) {
ADD_INSN(ret, line, nop);
}
else {
ADD_SEQ(ret, ensr);
if (!popped && last_leave) {
ADD_INSN(ret, line, putnil);
}
}
ADD_LABEL(ret, lcont);
if (last_leave) ADD_INSN(ret, line, pop);
erange = ISEQ_COMPILE_DATA(iseq)->ensure_node_stack->erange;
if (lstart->link.next != &lend->link) {
while (erange) {
ADD_CATCH_ENTRY(CATCH_TYPE_ENSURE, erange->begin, erange->end,
ensure, lcont);
erange = erange->next;
}
}
ISEQ_COMPILE_DATA(iseq)->ensure_node_stack = enl.prev;
return COMPILE_OK;
}
static int
compile_return(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped)
{
const int line = nd_line(node);
if (iseq) {
enum iseq_type type = iseq->body->type;
const rb_iseq_t *is = iseq;
enum iseq_type t = type;
const NODE *retval = node->nd_stts;
LABEL *splabel = 0;
while (t == ISEQ_TYPE_RESCUE || t == ISEQ_TYPE_ENSURE) {
if (!(is = is->body->parent_iseq)) break;
t = is->body->type;
}
switch (t) {
case ISEQ_TYPE_TOP:
case ISEQ_TYPE_MAIN:
if (is == iseq) {
/* plain top-level, leave directly */
type = ISEQ_TYPE_METHOD;
}
retval = 0;
break;
default:
break;
}
if (type == ISEQ_TYPE_METHOD) {
splabel = NEW_LABEL(0);
ADD_LABEL(ret, splabel);
ADD_ADJUST(ret, line, 0);
}
CHECK(COMPILE(ret, "return nd_stts (return val)", retval));
if (type == ISEQ_TYPE_METHOD) {
add_ensure_iseq(ret, iseq, 1);
ADD_TRACE(ret, RUBY_EVENT_RETURN);
ADD_INSN(ret, line, leave);
ADD_ADJUST_RESTORE(ret, splabel);
if (!popped) {
ADD_INSN(ret, line, putnil);
}
}
else {
ADD_INSN1(ret, line, throw, INT2FIX(TAG_RETURN));
if (popped) {
ADD_INSN(ret, line, pop);
}
}
}
return COMPILE_OK;
}
static int iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *node, int popped);
/**
compile each node
self: InstructionSequence
node: Ruby compiled node
popped: This node will be popped
*/
static int
iseq_compile_each(rb_iseq_t *iseq, LINK_ANCHOR *ret, const NODE *node, int popped)
{
if (node == 0) {
if (!popped) {
debugs("node: NODE_NIL(implicit)\n");
ADD_INSN(ret, ISEQ_COMPILE_DATA(iseq)->last_line, putnil);
}
return COMPILE_OK;
}
return iseq_compile_each0(iseq, ret, node, popped);
}
static int
iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *node, int popped)
{
const int line = (int)nd_line(node);
const enum node_type type = nd_type(node);
if (ISEQ_COMPILE_DATA(iseq)->last_line == line) {
/* ignore */
}
else {
if (node->flags & NODE_FL_NEWLINE) {
ISEQ_COMPILE_DATA(iseq)->last_line = line;
ADD_TRACE(ret, RUBY_EVENT_LINE);
}
}
debug_node_start(node);
#undef BEFORE_RETURN
#define BEFORE_RETURN debug_node_end()
switch (type) {
case NODE_BLOCK:{
while (node && nd_type(node) == NODE_BLOCK) {
CHECK(COMPILE_(ret, "BLOCK body", node->nd_head,
(node->nd_next ? 1 : popped)));
node = node->nd_next;
}
if (node) {
CHECK(COMPILE_(ret, "BLOCK next", node->nd_next, popped));
}
break;
}
case NODE_IF:
case NODE_UNLESS:
CHECK(compile_if(iseq, ret, node, popped, type));
break;
case NODE_CASE:
CHECK(compile_case(iseq, ret, node, popped));
break;
case NODE_CASE2:
CHECK(compile_case2(iseq, ret, node, popped));
break;
case NODE_WHILE:
case NODE_UNTIL:
CHECK(compile_loop(iseq, ret, node, popped, type));
break;
case NODE_FOR:
CHECK(compile_for(iseq, ret, node, popped));
break;
case NODE_ITER:
CHECK(compile_iter(iseq, ret, node, popped));
break;
case NODE_BREAK:
CHECK(compile_break(iseq, ret, node, popped));
break;
case NODE_NEXT:
CHECK(compile_next(iseq, ret, node, popped));
break;
case NODE_REDO:
CHECK(compile_redo(iseq, ret, node, popped));
break;
case NODE_RETRY:
CHECK(compile_retry(iseq, ret, node, popped));
break;
case NODE_BEGIN:{
CHECK(COMPILE_(ret, "NODE_BEGIN", node->nd_body, popped));
break;
}
case NODE_RESCUE:
CHECK(compile_rescue(iseq, ret, node, popped));
break;
case NODE_RESBODY:
CHECK(compile_resbody(iseq, ret, node, popped));
break;
case NODE_ENSURE:
CHECK(compile_ensure(iseq, ret, node, popped));
break;
case NODE_AND:
case NODE_OR:{
LABEL *end_label = NEW_LABEL(line);
CHECK(COMPILE(ret, "nd_1st", node->nd_1st));
if (!popped) {
ADD_INSN(ret, line, dup);
}
if (type == NODE_AND) {
ADD_INSNL(ret, line, branchunless, end_label);
}
else {
ADD_INSNL(ret, line, branchif, end_label);
}
if (!popped) {
ADD_INSN(ret, line, pop);
}
CHECK(COMPILE_(ret, "nd_2nd", node->nd_2nd, popped));
ADD_LABEL(ret, end_label);
break;
}
case NODE_MASGN:{
compile_massign(iseq, ret, node, popped);
break;
}
case NODE_LASGN:{
ID id = node->nd_vid;
int idx = iseq->body->local_iseq->body->local_table_size - get_local_var_idx(iseq, id);
debugs("lvar: %s idx: %d\n", rb_id2name(id), idx);
CHECK(COMPILE(ret, "rvalue", node->nd_value));
if (!popped) {
ADD_INSN(ret, line, dup);
}
ADD_SETLOCAL(ret, line, idx, get_lvar_level(iseq));
break;
}
case NODE_DASGN:
case NODE_DASGN_CURR:{
int idx, lv, ls;
ID id = node->nd_vid;
CHECK(COMPILE(ret, "dvalue", node->nd_value));
debugi("dassn id", rb_id2str(id) ? id : '*');
if (!popped) {
ADD_INSN(ret, line, dup);
}
idx = get_dyna_var_idx(iseq, id, &lv, &ls);
if (idx < 0) {
COMPILE_ERROR(ERROR_ARGS "NODE_DASGN(_CURR): unknown id (%"PRIsVALUE")",
rb_id2str(id));
goto ng;
}
ADD_SETLOCAL(ret, line, ls - idx, lv);
break;
}
case NODE_GASGN:{
CHECK(COMPILE(ret, "lvalue", node->nd_value));
if (!popped) {
ADD_INSN(ret, line, dup);
}
ADD_INSN1(ret, line, setglobal,
((VALUE)node->nd_entry | 1));
break;
}
case NODE_IASGN:{
CHECK(COMPILE(ret, "lvalue", node->nd_value));
if (!popped) {
ADD_INSN(ret, line, dup);
}
ADD_INSN2(ret, line, setinstancevariable,
ID2SYM(node->nd_vid),
get_ivar_ic_value(iseq,node->nd_vid));
break;
}
case NODE_CDECL:{
CHECK(COMPILE(ret, "lvalue", node->nd_value));
if (!popped) {
ADD_INSN(ret, line, dup);
}
if (node->nd_vid) {
ADD_INSN1(ret, line, putspecialobject,
INT2FIX(VM_SPECIAL_OBJECT_CONST_BASE));
ADD_INSN1(ret, line, setconstant, ID2SYM(node->nd_vid));
}
else {
compile_cpath(ret, iseq, node->nd_else);
ADD_INSN1(ret, line, setconstant, ID2SYM(node->nd_else->nd_mid));
}
break;
}
case NODE_CVASGN:{
CHECK(COMPILE(ret, "cvasgn val", node->nd_value));
if (!popped) {
ADD_INSN(ret, line, dup);
}
ADD_INSN1(ret, line, setclassvariable,
ID2SYM(node->nd_vid));
break;
}
case NODE_OP_ASGN1: {
DECL_ANCHOR(args);
VALUE argc;
unsigned int flag = 0;
unsigned int asgnflag = 0;
ID id = node->nd_mid;
int boff = 0;
/*
* a[x] (op)= y
*
* nil # nil
* eval a # nil a
* eval x # nil a x
* dupn 2 # nil a x a x
* send :[] # nil a x a[x]
* eval y # nil a x a[x] y
* send op # nil a x ret
* setn 3 # ret a x ret
* send []= # ret ?
* pop # ret
*/
/*
* nd_recv[nd_args->nd_body] (nd_mid)= nd_args->nd_head;
* NODE_OP_ASGN nd_recv
* nd_args->nd_head
* nd_args->nd_body
* nd_mid
*/
if (!popped) {
ADD_INSN(ret, line, putnil);
}
asgnflag = COMPILE_RECV(ret, "NODE_OP_ASGN1 recv", node);
switch (nd_type(node->nd_args->nd_head)) {
case NODE_ZARRAY:
argc = INT2FIX(0);
break;
case NODE_BLOCK_PASS:
boff = 1;
default:
INIT_ANCHOR(args);
argc = setup_args(iseq, args, node->nd_args->nd_head, &flag, NULL);
CHECK(!NIL_P(argc));
ADD_SEQ(ret, args);
}
ADD_INSN1(ret, line, dupn, FIXNUM_INC(argc, 1 + boff));
ADD_SEND_WITH_FLAG(ret, line, idAREF, argc, INT2FIX(flag));
flag |= asgnflag;
if (id == 0 || id == 1) {
/* 0: or, 1: and
a[x] ||= y
unless/if a[x]
a[x]= y
else
nil
end
*/
LABEL *label = NEW_LABEL(line);
LABEL *lfin = NEW_LABEL(line);
ADD_INSN(ret, line, dup);
if (id == 0) {
/* or */
ADD_INSNL(ret, line, branchif, label);
}
else {
/* and */
ADD_INSNL(ret, line, branchunless, label);
}
ADD_INSN(ret, line, pop);
CHECK(COMPILE(ret, "NODE_OP_ASGN1 args->body: ", node->nd_args->nd_body));
if (!popped) {
ADD_INSN1(ret, line, setn, FIXNUM_INC(argc, 2+boff));
}
if (flag & VM_CALL_ARGS_SPLAT) {
ADD_INSN1(ret, line, newarray, INT2FIX(1));
if (boff > 0) {
ADD_INSN1(ret, line, dupn, INT2FIX(3));
ADD_INSN(ret, line, swap);
ADD_INSN(ret, line, pop);
}
ADD_INSN(ret, line, concatarray);
if (boff > 0) {
ADD_INSN1(ret, line, setn, INT2FIX(3));
ADD_INSN(ret, line, pop);
ADD_INSN(ret, line, pop);
}
ADD_SEND_WITH_FLAG(ret, line, idASET, argc, INT2FIX(flag));
}
else {
if (boff > 0)
ADD_INSN(ret, line, swap);
ADD_SEND_WITH_FLAG(ret, line, idASET, FIXNUM_INC(argc, 1), INT2FIX(flag));
}
ADD_INSN(ret, line, pop);
ADD_INSNL(ret, line, jump, lfin);
ADD_LABEL(ret, label);
if (!popped) {
ADD_INSN1(ret, line, setn, FIXNUM_INC(argc, 2+boff));
}
ADD_INSN1(ret, line, adjuststack, FIXNUM_INC(argc, 2+boff));
ADD_LABEL(ret, lfin);
}
else {
CHECK(COMPILE(ret, "NODE_OP_ASGN1 args->body: ", node->nd_args->nd_body));
ADD_SEND(ret, line, id, INT2FIX(1));
if (!popped) {
ADD_INSN1(ret, line, setn, FIXNUM_INC(argc, 2+boff));
}
if (flag & VM_CALL_ARGS_SPLAT) {
ADD_INSN1(ret, line, newarray, INT2FIX(1));
if (boff > 0) {
ADD_INSN1(ret, line, dupn, INT2FIX(3));
ADD_INSN(ret, line, swap);
ADD_INSN(ret, line, pop);
}
ADD_INSN(ret, line, concatarray);
if (boff > 0) {
ADD_INSN1(ret, line, setn, INT2FIX(3));
ADD_INSN(ret, line, pop);
ADD_INSN(ret, line, pop);
}
ADD_SEND_WITH_FLAG(ret, line, idASET, argc, INT2FIX(flag));
}
else {
if (boff > 0)
ADD_INSN(ret, line, swap);
ADD_SEND_WITH_FLAG(ret, line, idASET, FIXNUM_INC(argc, 1), INT2FIX(flag));
}
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_OP_ASGN2:{
ID atype = node->nd_next->nd_mid;
ID vid = node->nd_next->nd_vid, aid = rb_id_attrset(vid);
VALUE asgnflag;
LABEL *lfin = NEW_LABEL(line);
LABEL *lcfin = NEW_LABEL(line);
LABEL *lskip = 0;
/*
class C; attr_accessor :c; end
r = C.new
r.a &&= v # asgn2
eval r # r
dup # r r
eval r.a # r o
# or
dup # r o o
if lcfin # r o
pop # r
eval v # r v
swap # v r
topn 1 # v r v
send a= # v ?
jump lfin # v ?
lcfin: # r o
swap # o r
lfin: # o ?
pop # o
# and
dup # r o o
unless lcfin
pop # r
eval v # r v
swap # v r
topn 1 # v r v
send a= # v ?
jump lfin # v ?
# others
eval v # r o v
send ?? # r w
send a= # w
*/
asgnflag = COMPILE_RECV(ret, "NODE_OP_ASGN2#recv", node);
if (node->nd_next->nd_aid) {
lskip = NEW_LABEL(line);
ADD_INSN(ret, line, dup);
ADD_INSNL(ret, line, branchnil, lskip);
}
ADD_INSN(ret, line, dup);
ADD_SEND(ret, line, vid, INT2FIX(0));
if (atype == 0 || atype == 1) { /* 0: OR or 1: AND */
ADD_INSN(ret, line, dup);
if (atype == 0) {
ADD_INSNL(ret, line, branchif, lcfin);
}
else {
ADD_INSNL(ret, line, branchunless, lcfin);
}
ADD_INSN(ret, line, pop);
CHECK(COMPILE(ret, "NODE_OP_ASGN2 val", node->nd_value));
ADD_INSN(ret, line, swap);
ADD_INSN1(ret, line, topn, INT2FIX(1));
ADD_SEND_WITH_FLAG(ret, line, aid, INT2FIX(1), INT2FIX(asgnflag));
ADD_INSNL(ret, line, jump, lfin);
ADD_LABEL(ret, lcfin);
ADD_INSN(ret, line, swap);
ADD_LABEL(ret, lfin);
ADD_INSN(ret, line, pop);
if (lskip) {
ADD_LABEL(ret, lskip);
}
if (popped) {
/* we can apply more optimize */
ADD_INSN(ret, line, pop);
}
}
else {
CHECK(COMPILE(ret, "NODE_OP_ASGN2 val", node->nd_value));
ADD_SEND(ret, line, atype, INT2FIX(1));
if (!popped) {
ADD_INSN(ret, line, swap);
ADD_INSN1(ret, line, topn, INT2FIX(1));
}
ADD_SEND_WITH_FLAG(ret, line, aid, INT2FIX(1), INT2FIX(asgnflag));
if (lskip && popped) {
ADD_LABEL(ret, lskip);
}
ADD_INSN(ret, line, pop);
if (lskip && !popped) {
ADD_LABEL(ret, lskip);
}
}
break;
}
case NODE_OP_CDECL: {
LABEL *lfin = 0;
LABEL *lassign = 0;
ID mid;
switch (nd_type(node->nd_head)) {
case NODE_COLON3:
ADD_INSN1(ret, line, putobject, rb_cObject);
break;
case NODE_COLON2:
CHECK(COMPILE(ret, "NODE_OP_CDECL/colon2#nd_head", node->nd_head->nd_head));
break;
default:
COMPILE_ERROR(ERROR_ARGS "%s: invalid node in NODE_OP_CDECL",
ruby_node_name(nd_type(node->nd_head)));
goto ng;
}
mid = node->nd_head->nd_mid;
/* cref */
if (node->nd_aid == 0) {
lassign = NEW_LABEL(line);
ADD_INSN(ret, line, dup); /* cref cref */
ADD_INSN3(ret, line, defined, INT2FIX(DEFINED_CONST),
ID2SYM(mid), Qfalse); /* cref bool */
ADD_INSNL(ret, line, branchunless, lassign); /* cref */
}
ADD_INSN(ret, line, dup); /* cref cref */
ADD_INSN1(ret, line, getconstant, ID2SYM(mid)); /* cref obj */
if (node->nd_aid == 0 || node->nd_aid == 1) {
lfin = NEW_LABEL(line);
if (!popped) ADD_INSN(ret, line, dup); /* cref [obj] obj */
if (node->nd_aid == 0)
ADD_INSNL(ret, line, branchif, lfin);
else
ADD_INSNL(ret, line, branchunless, lfin);
/* cref [obj] */
if (!popped) ADD_INSN(ret, line, pop); /* cref */
if (lassign) ADD_LABEL(ret, lassign);
CHECK(COMPILE(ret, "NODE_OP_CDECL#nd_value", node->nd_value));
/* cref value */
if (popped)
ADD_INSN1(ret, line, topn, INT2FIX(1)); /* cref value cref */
else {
ADD_INSN1(ret, line, dupn, INT2FIX(2)); /* cref value cref value */
ADD_INSN(ret, line, swap); /* cref value value cref */
}
ADD_INSN1(ret, line, setconstant, ID2SYM(mid)); /* cref [value] */
ADD_LABEL(ret, lfin); /* cref [value] */
if (!popped) ADD_INSN(ret, line, swap); /* [value] cref */
ADD_INSN(ret, line, pop); /* [value] */
}
else {
CHECK(COMPILE(ret, "NODE_OP_CDECL#nd_value", node->nd_value));
/* cref obj value */
ADD_CALL(ret, line, node->nd_aid, INT2FIX(1));
/* cref value */
ADD_INSN(ret, line, swap); /* value cref */
if (!popped) {
ADD_INSN1(ret, line, topn, INT2FIX(1)); /* value cref value */
ADD_INSN(ret, line, swap); /* value value cref */
}
ADD_INSN1(ret, line, setconstant, ID2SYM(mid));
}
break;
}
case NODE_OP_ASGN_AND:
case NODE_OP_ASGN_OR:{
LABEL *lfin = NEW_LABEL(line);
LABEL *lassign;
if (nd_type(node) == NODE_OP_ASGN_OR) {
LABEL *lfinish[2];
lfinish[0] = lfin;
lfinish[1] = 0;
defined_expr(iseq, ret, node->nd_head, lfinish, Qfalse);
lassign = lfinish[1];
if (!lassign) {
lassign = NEW_LABEL(line);
}
ADD_INSNL(ret, line, branchunless, lassign);
}
else {
lassign = NEW_LABEL(line);
}
CHECK(COMPILE(ret, "NODE_OP_ASGN_AND/OR#nd_head", node->nd_head));
ADD_INSN(ret, line, dup);
if (nd_type(node) == NODE_OP_ASGN_AND) {
ADD_INSNL(ret, line, branchunless, lfin);
}
else {
ADD_INSNL(ret, line, branchif, lfin);
}
ADD_INSN(ret, line, pop);
ADD_LABEL(ret, lassign);
CHECK(COMPILE(ret, "NODE_OP_ASGN_AND/OR#nd_value", node->nd_value));
ADD_LABEL(ret, lfin);
if (popped) {
/* we can apply more optimize */
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_CALL:
case NODE_OPCALL:
/* optimization shortcut
* "literal".freeze -> opt_str_freeze("literal")
*/
if (node->nd_recv && nd_type(node->nd_recv) == NODE_STR &&
(node->nd_mid == idFreeze || node->nd_mid == idUMinus) &&
node->nd_args == NULL &&
ISEQ_COMPILE_DATA(iseq)->current_block == NULL &&
ISEQ_COMPILE_DATA(iseq)->option->specialized_instruction) {
VALUE str = freeze_literal(iseq, node->nd_recv->nd_lit);
if (node->nd_mid == idUMinus) {
ADD_INSN1(ret, line, opt_str_uminus, str);
}
else {
ADD_INSN1(ret, line, opt_str_freeze, str);
}
if (popped) {
ADD_INSN(ret, line, pop);
}
break;
}
/* optimization shortcut
* obj["literal"] -> opt_aref_with(obj, "literal")
*/
if (node->nd_mid == idAREF && !private_recv_p(node) && node->nd_args &&
nd_type(node->nd_args) == NODE_ARRAY && node->nd_args->nd_alen == 1 &&
nd_type(node->nd_args->nd_head) == NODE_STR &&
ISEQ_COMPILE_DATA(iseq)->current_block == NULL &&
ISEQ_COMPILE_DATA(iseq)->option->specialized_instruction) {
VALUE str = freeze_literal(iseq, node->nd_args->nd_head->nd_lit);
CHECK(COMPILE(ret, "recv", node->nd_recv));
ADD_INSN3(ret, line, opt_aref_with,
new_callinfo(iseq, idAREF, 1, 0, NULL, FALSE),
NULL/* CALL_CACHE */, str);
if (popped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_QCALL:
case NODE_FCALL:
case NODE_VCALL:{ /* VCALL: variable or call */
/*
call: obj.method(...)
fcall: func(...)
vcall: func
*/
DECL_ANCHOR(recv);
DECL_ANCHOR(args);
LABEL *else_label = 0;
LABEL *end_label = 0;
VALUE branches = 0;
ID mid = node->nd_mid;
VALUE argc;
unsigned int flag = 0;
struct rb_call_info_kw_arg *keywords = NULL;
const rb_iseq_t *parent_block = ISEQ_COMPILE_DATA(iseq)->current_block;
ISEQ_COMPILE_DATA(iseq)->current_block = NULL;
INIT_ANCHOR(recv);
INIT_ANCHOR(args);
#if SUPPORT_JOKE
if (nd_type(node) == NODE_VCALL) {
ID id_bitblt;
ID id_answer;
CONST_ID(id_bitblt, "bitblt");
CONST_ID(id_answer, "the_answer_to_life_the_universe_and_everything");
if (mid == id_bitblt) {
ADD_INSN(ret, line, bitblt);
break;
}
else if (mid == id_answer) {
ADD_INSN(ret, line, answer);
break;
}
}
/* only joke */
{
ID goto_id;
ID label_id;
CONST_ID(goto_id, "__goto__");
CONST_ID(label_id, "__label__");
if (nd_type(node) == NODE_FCALL &&
(mid == goto_id || mid == label_id)) {
LABEL *label;
st_data_t data;
st_table *labels_table = ISEQ_COMPILE_DATA(iseq)->labels_table;
VALUE label_name;
if (!labels_table) {
labels_table = st_init_numtable();
ISEQ_COMPILE_DATA(iseq)->labels_table = labels_table;
}
if (nd_type(node->nd_args->nd_head) == NODE_LIT &&
SYMBOL_P(node->nd_args->nd_head->nd_lit)) {
label_name = node->nd_args->nd_head->nd_lit;
if (!st_lookup(labels_table, (st_data_t)label_name, &data)) {
label = NEW_LABEL(line);
label->position = line;
st_insert(labels_table, (st_data_t)label_name, (st_data_t)label);
}
else {
label = (LABEL *)data;
}
}
else {
COMPILE_ERROR(ERROR_ARGS "invalid goto/label format");
goto ng;
}
if (mid == goto_id) {
ADD_INSNL(ret, line, jump, label);
}
else {
ADD_LABEL(ret, label);
}
break;
}
}
#endif
/* receiver */
if (type == NODE_CALL || type == NODE_OPCALL || type == NODE_QCALL) {
CHECK(COMPILE(recv, "recv", node->nd_recv));
if (type == NODE_QCALL) {
else_label = NEW_LABEL(line);
end_label = NEW_LABEL(line);
DECL_BRANCH_BASE(branches, nd_first_lineno(node), nd_first_column(node), nd_last_lineno(node), nd_last_column(node), "&.");
ADD_INSN(recv, line, dup);
ADD_INSNL(recv, line, branchnil, else_label);
ADD_TRACE_BRANCH_COVERAGE(recv, nd_first_lineno(node), nd_first_column(node), nd_last_lineno(node), nd_last_column(node), "then", branches);
}
}
else if (type == NODE_FCALL || type == NODE_VCALL) {
ADD_CALL_RECEIVER(recv, line);
}
/* args */
if (type != NODE_VCALL) {
argc = setup_args(iseq, args, node->nd_args, &flag, &keywords);
CHECK(!NIL_P(argc));
}
else {
argc = INT2FIX(0);
}
ADD_SEQ(ret, recv);
ADD_SEQ(ret, args);
debugp_param("call args argc", argc);
debugp_param("call method", ID2SYM(mid));
switch ((int)type) {
case NODE_VCALL:
flag |= VM_CALL_VCALL;
/* VCALL is funcall, so fall through */
case NODE_FCALL:
flag |= VM_CALL_FCALL;
}
ADD_SEND_R(ret, line, mid, argc, parent_block, INT2FIX(flag), keywords);
if (else_label && end_label) {
ADD_INSNL(ret, line, jump, end_label);
ADD_LABEL(ret, else_label);
ADD_TRACE_BRANCH_COVERAGE(ret, nd_first_lineno(node), nd_first_column(node), nd_last_lineno(node), nd_last_column(node), "else", branches);
ADD_LABEL(ret, end_label);
}
if (popped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_SUPER:
case NODE_ZSUPER:{
DECL_ANCHOR(args);
int argc;
unsigned int flag = 0;
struct rb_call_info_kw_arg *keywords = NULL;
const rb_iseq_t *parent_block = ISEQ_COMPILE_DATA(iseq)->current_block;
INIT_ANCHOR(args);
ISEQ_COMPILE_DATA(iseq)->current_block = NULL;
if (type == NODE_SUPER) {
VALUE vargc = setup_args(iseq, args, node->nd_args, &flag, &keywords);
CHECK(!NIL_P(vargc));
argc = FIX2INT(vargc);
}
else {
/* NODE_ZSUPER */
int i;
const rb_iseq_t *liseq = iseq->body->local_iseq;
int lvar_level = get_lvar_level(iseq);
argc = liseq->body->param.lead_num;
/* normal arguments */
for (i = 0; i < liseq->body->param.lead_num; i++) {
int idx = liseq->body->local_table_size - i;
ADD_GETLOCAL(args, line, idx, lvar_level);
}
if (liseq->body->param.flags.has_opt) {
/* optional arguments */
int j;
for (j = 0; j < liseq->body->param.opt_num; j++) {
int idx = liseq->body->local_table_size - (i + j);
ADD_GETLOCAL(args, line, idx, lvar_level);
}
i += j;
argc = i;
}
if (liseq->body->param.flags.has_rest) {
/* rest argument */
int idx = liseq->body->local_table_size - liseq->body->param.rest_start;
ADD_GETLOCAL(args, line, idx, lvar_level);
argc = liseq->body->param.rest_start + 1;
flag |= VM_CALL_ARGS_SPLAT;
}
if (liseq->body->param.flags.has_post) {
/* post arguments */
int post_len = liseq->body->param.post_num;
int post_start = liseq->body->param.post_start;
if (liseq->body->param.flags.has_rest) {
int j;
for (j=0; j<post_len; j++) {
int idx = liseq->body->local_table_size - (post_start + j);
ADD_GETLOCAL(args, line, idx, lvar_level);
}
ADD_INSN1(args, line, newarray, INT2FIX(j));
ADD_INSN (args, line, concatarray);
/* argc is settled at above */
}
else {
int j;
for (j=0; j<post_len; j++) {
int idx = liseq->body->local_table_size - (post_start + j);
ADD_GETLOCAL(args, line, idx, lvar_level);
}
argc = post_len + post_start;
}
}
if (liseq->body->param.flags.has_kw) { /* TODO: support keywords */
int local_size = liseq->body->local_table_size;
argc++;
ADD_INSN1(args, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
if (liseq->body->param.flags.has_kwrest) {
int idx = liseq->body->local_table_size - liseq->body->param.keyword->rest_start;
ADD_GETLOCAL(args, line, idx, lvar_level);
ADD_SEND (args, line, rb_intern("dup"), INT2FIX(0));
}
else {
ADD_INSN1(args, line, newhash, INT2FIX(0));
}
for (i = 0; i < liseq->body->param.keyword->num; ++i) {
ID id = liseq->body->param.keyword->table[i];
int idx = local_size - get_local_var_idx(liseq, id);
ADD_INSN1(args, line, putobject, ID2SYM(id));
ADD_GETLOCAL(args, line, idx, lvar_level);
}
ADD_SEND(args, line, id_core_hash_merge_ptr, INT2FIX(i * 2 + 1));
if (liseq->body->param.flags.has_rest) {
ADD_INSN1(args, line, newarray, INT2FIX(1));
ADD_INSN (args, line, concatarray);
--argc;
}
}
else if (liseq->body->param.flags.has_kwrest) {
int idx = liseq->body->local_table_size - liseq->body->param.keyword->rest_start;
ADD_GETLOCAL(args, line, idx, lvar_level);
ADD_SEND (args, line, rb_intern("dup"), INT2FIX(0));
if (liseq->body->param.flags.has_rest) {
ADD_INSN1(args, line, newarray, INT2FIX(1));
ADD_INSN (args, line, concatarray);
}
else {
argc++;
}
}
}
/* dummy receiver */
ADD_INSN1(ret, line, putobject, type == NODE_ZSUPER ? Qfalse : Qtrue);
ADD_SEQ(ret, args);
ADD_INSN3(ret, line, invokesuper,
new_callinfo(iseq, 0, argc, flag | VM_CALL_SUPER | VM_CALL_FCALL, keywords, parent_block != NULL),
Qnil, /* CALL_CACHE */
parent_block);
if (popped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_ARRAY:{
CHECK(compile_array(iseq, ret, node, COMPILE_ARRAY_TYPE_ARRAY, NULL, NULL, popped) >= 0);
break;
}
case NODE_ZARRAY:{
if (!popped) {
ADD_INSN1(ret, line, newarray, INT2FIX(0));
}
break;
}
case NODE_VALUES:{
const NODE *n = node;
if (popped) {
COMPILE_ERROR(ERROR_ARGS "NODE_VALUES: must not be popped");
}
while (n) {
CHECK(COMPILE(ret, "values item", n->nd_head));
n = n->nd_next;
}
ADD_INSN1(ret, line, newarray, INT2FIX(node->nd_alen));
break;
}
case NODE_HASH:{
DECL_ANCHOR(list);
int type = node->nd_head ? nd_type(node->nd_head) : NODE_ZARRAY;
INIT_ANCHOR(list);
switch (type) {
case NODE_ARRAY:
CHECK(compile_array(iseq, list, node->nd_head, COMPILE_ARRAY_TYPE_HASH, NULL, NULL, popped) >= 0);
ADD_SEQ(ret, list);
break;
case NODE_ZARRAY:
if (popped) break;
ADD_INSN1(ret, line, newhash, INT2FIX(0));
break;
default:
COMPILE_ERROR(ERROR_ARGS_AT(node->nd_head) "can't make hash with this node: %s",
ruby_node_name(type));
goto ng;
}
break;
}
case NODE_RETURN:
CHECK(compile_return(iseq, ret, node, popped));
break;
case NODE_YIELD:{
DECL_ANCHOR(args);
VALUE argc;
unsigned int flag = 0;
struct rb_call_info_kw_arg *keywords = NULL;
INIT_ANCHOR(args);
if (iseq->body->type == ISEQ_TYPE_TOP ||
iseq->body->type == ISEQ_TYPE_MAIN) {
COMPILE_ERROR(ERROR_ARGS "Invalid yield");
goto ng;
}
if (node->nd_head) {
argc = setup_args(iseq, args, node->nd_head, &flag, &keywords);
CHECK(!NIL_P(argc));
}
else {
argc = INT2FIX(0);
}
ADD_SEQ(ret, args);
ADD_INSN1(ret, line, invokeblock, new_callinfo(iseq, 0, FIX2INT(argc), flag, keywords, FALSE));
if (popped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_LVAR:{
if (!popped) {
ID id = node->nd_vid;
int idx = iseq->body->local_iseq->body->local_table_size - get_local_var_idx(iseq, id);
debugs("id: %s idx: %d\n", rb_id2name(id), idx);
ADD_GETLOCAL(ret, line, idx, get_lvar_level(iseq));
}
break;
}
case NODE_DVAR:{
int lv, idx, ls;
debugi("nd_vid", node->nd_vid);
if (!popped) {
idx = get_dyna_var_idx(iseq, node->nd_vid, &lv, &ls);
if (idx < 0) {
COMPILE_ERROR(ERROR_ARGS "unknown dvar (%"PRIsVALUE")",
rb_id2str(node->nd_vid));
goto ng;
}
ADD_GETLOCAL(ret, line, ls - idx, lv);
}
break;
}
case NODE_GVAR:{
ADD_INSN1(ret, line, getglobal,
((VALUE)node->nd_entry | 1));
if (popped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_IVAR:{
debugi("nd_vid", node->nd_vid);
if (!popped) {
ADD_INSN2(ret, line, getinstancevariable,
ID2SYM(node->nd_vid),
get_ivar_ic_value(iseq,node->nd_vid));
}
break;
}
case NODE_CONST:{
debugi("nd_vid", node->nd_vid);
if (ISEQ_COMPILE_DATA(iseq)->option->inline_const_cache) {
LABEL *lend = NEW_LABEL(line);
int ic_index = iseq->body->is_size++;
ADD_INSN2(ret, line, getinlinecache, lend, INT2FIX(ic_index));
ADD_INSN1(ret, line, getconstant, ID2SYM(node->nd_vid));
ADD_INSN1(ret, line, setinlinecache, INT2FIX(ic_index));
ADD_LABEL(ret, lend);
}
else {
ADD_INSN(ret, line, putnil);
ADD_INSN1(ret, line, getconstant, ID2SYM(node->nd_vid));
}
if (popped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_CVAR:{
if (!popped) {
ADD_INSN1(ret, line, getclassvariable,
ID2SYM(node->nd_vid));
}
break;
}
case NODE_NTH_REF:{
if (!popped) {
if (!node->nd_nth) {
ADD_INSN(ret, line, putnil);
break;
}
ADD_INSN2(ret, line, getspecial, INT2FIX(1) /* '~' */,
INT2FIX(node->nd_nth << 1));
}
break;
}
case NODE_BACK_REF:{
if (!popped) {
ADD_INSN2(ret, line, getspecial, INT2FIX(1) /* '~' */,
INT2FIX(0x01 | (node->nd_nth << 1)));
}
break;
}
case NODE_MATCH:
case NODE_MATCH2:
case NODE_MATCH3:{
DECL_ANCHOR(recv);
DECL_ANCHOR(val);
INIT_ANCHOR(recv);
INIT_ANCHOR(val);
switch (nd_type(node)) {
case NODE_MATCH:
ADD_INSN1(recv, line, putobject, node->nd_lit);
ADD_INSN2(val, line, getspecial, INT2FIX(0),
INT2FIX(0));
break;
case NODE_MATCH2:
CHECK(COMPILE(recv, "receiver", node->nd_recv));
CHECK(COMPILE(val, "value", node->nd_value));
break;
case NODE_MATCH3:
CHECK(COMPILE(recv, "receiver", node->nd_value));
CHECK(COMPILE(val, "value", node->nd_recv));
break;
}
if (ISEQ_COMPILE_DATA(iseq)->option->specialized_instruction) {
/* TODO: detect by node */
if (recv->last == recv->anchor.next &&
INSN_OF(recv->last) == BIN(putobject) &&
nd_type(node) == NODE_MATCH2) {
ADD_SEQ(ret, val);
ADD_INSN1(ret, line, opt_regexpmatch1,
OPERAND_AT(recv->last, 0));
}
else {
ADD_SEQ(ret, recv);
ADD_SEQ(ret, val);
ADD_INSN2(ret, line, opt_regexpmatch2, new_callinfo(iseq, idEqTilde, 1, 0, NULL, FALSE), Qnil);
}
}
else {
ADD_SEQ(ret, recv);
ADD_SEQ(ret, val);
ADD_SEND(ret, line, idEqTilde, INT2FIX(1));
}
if (node->nd_args) {
compile_named_capture_assign(iseq, ret, node->nd_args);
}
if (popped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_LIT:{
debugp_param("lit", node->nd_lit);
if (!popped) {
ADD_INSN1(ret, line, putobject, node->nd_lit);
}
break;
}
case NODE_STR:{
debugp_param("nd_lit", node->nd_lit);
if (!popped) {
VALUE lit = node->nd_lit;
if (!ISEQ_COMPILE_DATA(iseq)->option->frozen_string_literal) {
lit = freeze_literal(iseq, lit);
ADD_INSN1(ret, line, putstring, lit);
}
else {
if (ISEQ_COMPILE_DATA(iseq)->option->debug_frozen_string_literal || RTEST(ruby_debug)) {
VALUE debug_info = rb_ary_new_from_args(2, rb_iseq_path(iseq), INT2FIX(line));
lit = rb_str_dup(lit);
rb_ivar_set(lit, id_debug_created_info, rb_obj_freeze(debug_info));
lit = rb_str_freeze(lit);
}
else {
lit = rb_fstring(lit);
}
ADD_INSN1(ret, line, putobject, lit);
iseq_add_mark_object_compile_time(iseq, lit);
}
}
break;
}
case NODE_DSTR:{
compile_dstr(iseq, ret, node);
if (popped) {
ADD_INSN(ret, line, pop);
}
else {
if (ISEQ_COMPILE_DATA(iseq)->option->frozen_string_literal) {
VALUE debug_info = Qnil;
if (ISEQ_COMPILE_DATA(iseq)->option->debug_frozen_string_literal || RTEST(ruby_debug)) {
debug_info = rb_ary_new_from_args(2, rb_iseq_path(iseq), INT2FIX(line));
iseq_add_mark_object_compile_time(iseq, rb_obj_freeze(debug_info));
}
ADD_INSN1(ret, line, freezestring, debug_info);
}
}
break;
}
case NODE_XSTR:{
ADD_CALL_RECEIVER(ret, line);
ADD_INSN1(ret, line, putobject, freeze_literal(iseq, node->nd_lit));
ADD_CALL(ret, line, idBackquote, INT2FIX(1));
if (popped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_DXSTR:{
ADD_CALL_RECEIVER(ret, line);
compile_dstr(iseq, ret, node);
ADD_CALL(ret, line, idBackquote, INT2FIX(1));
if (popped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_EVSTR:{
CHECK(COMPILE(ret, "nd_body", node->nd_body));
if (popped) {
ADD_INSN(ret, line, pop);
}
else if (!all_string_result_p(node->nd_body)) {
const unsigned int flag = VM_CALL_FCALL;
LABEL *isstr = NEW_LABEL(line);
ADD_INSN(ret, line, dup);
ADD_INSN2(ret, line, branchiftype, INT2FIX(T_STRING), isstr);
LABEL_REF(isstr);
ADD_INSN(ret, line, dup);
ADD_SEND_R(ret, line, idTo_s, INT2FIX(0), NULL, INT2FIX(flag), NULL);
ADD_INSN(ret, line, tostring);
ADD_LABEL(ret, isstr);
}
break;
}
case NODE_DREGX:{
compile_dregx(iseq, ret, node);
if (popped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_SCOPE:{
int ic_index = iseq->body->is_size++;
const rb_iseq_t *block_iseq = NEW_CHILD_ISEQ(node, make_name_for_block(iseq),
ISEQ_TYPE_ONCE_GUARD, line);
ADD_INSN2(ret, line, once, block_iseq, INT2FIX(ic_index));
if (popped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_ARGSCAT:{
if (popped) {
CHECK(COMPILE(ret, "argscat head", node->nd_head));
ADD_INSN1(ret, line, splatarray, Qfalse);
ADD_INSN(ret, line, pop);
CHECK(COMPILE(ret, "argscat body", node->nd_body));
ADD_INSN1(ret, line, splatarray, Qfalse);
ADD_INSN(ret, line, pop);
}
else {
CHECK(COMPILE(ret, "argscat head", node->nd_head));
CHECK(COMPILE(ret, "argscat body", node->nd_body));
ADD_INSN(ret, line, concatarray);
}
break;
}
case NODE_ARGSPUSH:{
if (popped) {
CHECK(COMPILE(ret, "arsgpush head", node->nd_head));
ADD_INSN1(ret, line, splatarray, Qfalse);
ADD_INSN(ret, line, pop);
CHECK(COMPILE_(ret, "argspush body", node->nd_body, popped));
}
else {
CHECK(COMPILE(ret, "arsgpush head", node->nd_head));
CHECK(COMPILE_(ret, "argspush body", node->nd_body, popped));
ADD_INSN1(ret, line, newarray, INT2FIX(1));
ADD_INSN(ret, line, concatarray);
}
break;
}
case NODE_SPLAT:{
CHECK(COMPILE(ret, "splat", node->nd_head));
ADD_INSN1(ret, line, splatarray, Qtrue);
if (popped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_DEFN:{
const rb_iseq_t *method_iseq = NEW_ISEQ(node->nd_defn,
rb_id2str(node->nd_mid),
ISEQ_TYPE_METHOD, line);
debugp_param("defn/iseq", rb_iseqw_new(method_iseq));
ADD_INSN1(ret, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
ADD_INSN1(ret, line, putobject, ID2SYM(node->nd_mid));
ADD_INSN1(ret, line, putiseq, method_iseq);
ADD_SEND (ret, line, id_core_define_method, INT2FIX(2));
if (popped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_DEFS:{
const rb_iseq_t * singleton_method = NEW_ISEQ(node->nd_defn,
rb_id2str(node->nd_mid),
ISEQ_TYPE_METHOD, line);
debugp_param("defs/iseq", rb_iseqw_new(singleton_method));
ADD_INSN1(ret, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
CHECK(COMPILE(ret, "defs: recv", node->nd_recv));
ADD_INSN1(ret, line, putobject, ID2SYM(node->nd_mid));
ADD_INSN1(ret, line, putiseq, singleton_method);
ADD_SEND (ret, line, id_core_define_singleton_method, INT2FIX(3));
if (popped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_ALIAS:{
ADD_INSN1(ret, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
ADD_INSN1(ret, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_CBASE));
CHECK(COMPILE(ret, "alias arg1", node->nd_1st));
CHECK(COMPILE(ret, "alias arg2", node->nd_2nd));
ADD_SEND(ret, line, id_core_set_method_alias, INT2FIX(3));
if (popped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_VALIAS:{
ADD_INSN1(ret, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
ADD_INSN1(ret, line, putobject, ID2SYM(node->nd_alias));
ADD_INSN1(ret, line, putobject, ID2SYM(node->nd_orig));
ADD_SEND(ret, line, id_core_set_variable_alias, INT2FIX(2));
if (popped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_UNDEF:{
ADD_INSN1(ret, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
ADD_INSN1(ret, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_CBASE));
CHECK(COMPILE(ret, "undef arg", node->nd_undef));
ADD_SEND(ret, line, id_core_undef_method, INT2FIX(2));
if (popped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_CLASS:{
const rb_iseq_t *class_iseq = NEW_CHILD_ISEQ(node->nd_body,
rb_sprintf("<class:%"PRIsVALUE">", rb_id2str(node->nd_cpath->nd_mid)),
ISEQ_TYPE_CLASS, line);
const int flags = VM_DEFINECLASS_TYPE_CLASS |
(node->nd_super ? VM_DEFINECLASS_FLAG_HAS_SUPERCLASS : 0) |
compile_cpath(ret, iseq, node->nd_cpath);
CHECK(COMPILE(ret, "super", node->nd_super));
ADD_INSN3(ret, line, defineclass, ID2SYM(node->nd_cpath->nd_mid), class_iseq, INT2FIX(flags));
if (popped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_MODULE:{
const rb_iseq_t *module_iseq = NEW_CHILD_ISEQ(node->nd_body,
rb_sprintf("<module:%"PRIsVALUE">", rb_id2str(node->nd_cpath->nd_mid)),
ISEQ_TYPE_CLASS, line);
const int flags = VM_DEFINECLASS_TYPE_MODULE |
compile_cpath(ret, iseq, node->nd_cpath);
ADD_INSN (ret, line, putnil); /* dummy */
ADD_INSN3(ret, line, defineclass, ID2SYM(node->nd_cpath->nd_mid), module_iseq, INT2FIX(flags));
if (popped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_SCLASS:{
ID singletonclass;
const rb_iseq_t *singleton_class = NEW_ISEQ(node->nd_body, rb_fstring_cstr("singleton class"),
ISEQ_TYPE_CLASS, line);
CHECK(COMPILE(ret, "sclass#recv", node->nd_recv));
ADD_INSN (ret, line, putnil);
CONST_ID(singletonclass, "singletonclass");
ADD_INSN3(ret, line, defineclass,
ID2SYM(singletonclass), singleton_class,
INT2FIX(VM_DEFINECLASS_TYPE_SINGLETON_CLASS));
if (popped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_COLON2:{
if (rb_is_const_id(node->nd_mid)) {
/* constant */
LABEL *lend = NEW_LABEL(line);
int ic_index = iseq->body->is_size++;
DECL_ANCHOR(pref);
DECL_ANCHOR(body);
INIT_ANCHOR(pref);
INIT_ANCHOR(body);
CHECK(compile_const_prefix(iseq, node, pref, body));
if (LIST_INSN_SIZE_ZERO(pref)) {
if (ISEQ_COMPILE_DATA(iseq)->option->inline_const_cache) {
ADD_INSN2(ret, line, getinlinecache, lend, INT2FIX(ic_index));
}
else {
ADD_INSN(ret, line, putnil);
}
ADD_SEQ(ret, body);
if (ISEQ_COMPILE_DATA(iseq)->option->inline_const_cache) {
ADD_INSN1(ret, line, setinlinecache, INT2FIX(ic_index));
ADD_LABEL(ret, lend);
}
}
else {
ADD_SEQ(ret, pref);
ADD_SEQ(ret, body);
}
}
else {
/* function call */
ADD_CALL_RECEIVER(ret, line);
CHECK(COMPILE(ret, "colon2#nd_head", node->nd_head));
ADD_CALL(ret, line, node->nd_mid, INT2FIX(1));
}
if (popped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_COLON3:{
LABEL *lend = NEW_LABEL(line);
int ic_index = iseq->body->is_size++;
debugi("colon3#nd_mid", node->nd_mid);
/* add cache insn */
if (ISEQ_COMPILE_DATA(iseq)->option->inline_const_cache) {
ADD_INSN2(ret, line, getinlinecache, lend, INT2FIX(ic_index));
ADD_INSN(ret, line, pop);
}
ADD_INSN1(ret, line, putobject, rb_cObject);
ADD_INSN1(ret, line, getconstant, ID2SYM(node->nd_mid));
if (ISEQ_COMPILE_DATA(iseq)->option->inline_const_cache) {
ADD_INSN1(ret, line, setinlinecache, INT2FIX(ic_index));
ADD_LABEL(ret, lend);
}
if (popped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_DOT2:
case NODE_DOT3:{
int excl = type == NODE_DOT3;
VALUE flag = INT2FIX(excl);
const NODE *b = node->nd_beg;
const NODE *e = node->nd_end;
if (number_literal_p(b) && number_literal_p(e)) {
if (!popped) {
VALUE val = rb_range_new(b->nd_lit, e->nd_lit, excl);
iseq_add_mark_object_compile_time(iseq, val);
ADD_INSN1(ret, line, putobject, val);
}
}
else {
CHECK(COMPILE_(ret, "min", b, popped));
CHECK(COMPILE_(ret, "max", e, popped));
if (!popped) {
ADD_INSN1(ret, line, newrange, flag);
}
}
break;
}
case NODE_FLIP2:
case NODE_FLIP3:{
LABEL *lend = NEW_LABEL(line);
LABEL *ltrue = NEW_LABEL(line);
LABEL *lfalse = NEW_LABEL(line);
CHECK(compile_flip_flop(iseq, ret, node, type == NODE_FLIP2,
ltrue, lfalse));
ADD_LABEL(ret, ltrue);
ADD_INSN1(ret, line, putobject, Qtrue);
ADD_INSNL(ret, line, jump, lend);
ADD_LABEL(ret, lfalse);
ADD_INSN1(ret, line, putobject, Qfalse);
ADD_LABEL(ret, lend);
break;
}
case NODE_SELF:{
if (!popped) {
ADD_INSN(ret, line, putself);
}
break;
}
case NODE_NIL:{
if (!popped) {
ADD_INSN(ret, line, putnil);
}
break;
}
case NODE_TRUE:{
if (!popped) {
ADD_INSN1(ret, line, putobject, Qtrue);
}
break;
}
case NODE_FALSE:{
if (!popped) {
ADD_INSN1(ret, line, putobject, Qfalse);
}
break;
}
case NODE_ERRINFO:{
if (!popped) {
if (iseq->body->type == ISEQ_TYPE_RESCUE) {
ADD_GETLOCAL(ret, line, LVAR_ERRINFO, 0);
}
else {
const rb_iseq_t *ip = iseq;
int level = 0;
while (ip) {
if (ip->body->type == ISEQ_TYPE_RESCUE) {
break;
}
ip = ip->body->parent_iseq;
level++;
}
if (ip) {
ADD_GETLOCAL(ret, line, LVAR_ERRINFO, level);
}
else {
ADD_INSN(ret, line, putnil);
}
}
}
break;
}
case NODE_DEFINED:
if (!popped) {
CHECK(compile_defined_expr(iseq, ret, node, Qtrue));
}
break;
case NODE_POSTEXE:{
/* compiled to:
* ONCE{ rb_mRubyVMFrozenCore::core#set_postexe{ ... } }
*/
int is_index = iseq->body->is_size++;
const rb_iseq_t *once_iseq = NEW_CHILD_ISEQ((const NODE *)IFUNC_NEW(build_postexe_iseq, node->nd_body, 0),
make_name_for_block(iseq), ISEQ_TYPE_BLOCK, line);
ADD_INSN2(ret, line, once, once_iseq, INT2FIX(is_index));
if (popped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_KW_ARG:
{
LABEL *end_label = NEW_LABEL(nd_line(node));
const NODE *default_value = node->nd_body->nd_value;
if (default_value == (const NODE *)-1) {
/* required argument. do nothing */
COMPILE_ERROR(ERROR_ARGS "unreachable");
goto ng;
}
else if (nd_type(default_value) == NODE_LIT ||
nd_type(default_value) == NODE_NIL ||
nd_type(default_value) == NODE_TRUE ||
nd_type(default_value) == NODE_FALSE) {
COMPILE_ERROR(ERROR_ARGS "unreachable");
goto ng;
}
else {
/* if keywordcheck(_kw_bits, nth_keyword)
* kw = default_value
* end
*/
int kw_bits_idx = iseq->body->local_table_size - iseq->body->param.keyword->bits_start;
int keyword_idx = iseq->body->param.keyword->num;
ADD_INSN2(ret, line, checkkeyword, INT2FIX(kw_bits_idx + VM_ENV_DATA_SIZE - 1), INT2FIX(keyword_idx));
ADD_INSNL(ret, line, branchif, end_label);
CHECK(COMPILE_POPPED(ret, "keyword default argument", node->nd_body));
ADD_LABEL(ret, end_label);
}
break;
}
case NODE_DSYM:{
compile_dstr(iseq, ret, node);
if (!popped) {
ADD_INSN(ret, line, intern);
}
else {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_ATTRASGN:{
DECL_ANCHOR(recv);
DECL_ANCHOR(args);
unsigned int flag = 0;
ID mid = node->nd_mid;
LABEL *lskip = 0;
VALUE argc;
/* optimization shortcut
* obj["literal"] = value -> opt_aset_with(obj, "literal", value)
*/
if (mid == idASET && !private_recv_p(node) && node->nd_args &&
nd_type(node->nd_args) == NODE_ARRAY && node->nd_args->nd_alen == 2 &&
nd_type(node->nd_args->nd_head) == NODE_STR &&
ISEQ_COMPILE_DATA(iseq)->current_block == NULL &&
ISEQ_COMPILE_DATA(iseq)->option->specialized_instruction)
{
VALUE str = freeze_literal(iseq, node->nd_args->nd_head->nd_lit);
CHECK(COMPILE(ret, "recv", node->nd_recv));
CHECK(COMPILE(ret, "value", node->nd_args->nd_next->nd_head));
if (!popped) {
ADD_INSN(ret, line, swap);
ADD_INSN1(ret, line, topn, INT2FIX(1));
}
ADD_INSN3(ret, line, opt_aset_with,
new_callinfo(iseq, idASET, 2, 0, NULL, FALSE),
NULL/* CALL_CACHE */, str);
ADD_INSN(ret, line, pop);
break;
}
INIT_ANCHOR(recv);
INIT_ANCHOR(args);
argc = setup_args(iseq, args, node->nd_args, &flag, NULL);
CHECK(!NIL_P(argc));
flag |= COMPILE_RECV(recv, "recv", node);
debugp_param("argc", argc);
debugp_param("nd_mid", ID2SYM(mid));
if (!rb_is_attrset_id(mid)) {
/* safe nav attr */
mid = rb_id_attrset(mid);
ADD_INSN(recv, line, dup);
lskip = NEW_LABEL(line);
ADD_INSNL(recv, line, branchnil, lskip);
}
if (!popped) {
ADD_INSN(ret, line, putnil);
ADD_SEQ(ret, recv);
ADD_SEQ(ret, args);
if (flag & VM_CALL_ARGS_BLOCKARG) {
ADD_INSN1(ret, line, topn, INT2FIX(1));
if (flag & VM_CALL_ARGS_SPLAT) {
ADD_INSN1(ret, line, putobject, INT2FIX(-1));
ADD_SEND(ret, line, idAREF, INT2FIX(1));
}
ADD_INSN1(ret, line, setn, FIXNUM_INC(argc, 3));
ADD_INSN (ret, line, pop);
}
else if (flag & VM_CALL_ARGS_SPLAT) {
ADD_INSN(ret, line, dup);
ADD_INSN1(ret, line, putobject, INT2FIX(-1));
ADD_SEND(ret, line, idAREF, INT2FIX(1));
ADD_INSN1(ret, line, setn, FIXNUM_INC(argc, 2));
ADD_INSN (ret, line, pop);
}
else {
ADD_INSN1(ret, line, setn, FIXNUM_INC(argc, 1));
}
}
else {
ADD_SEQ(ret, recv);
ADD_SEQ(ret, args);
}
ADD_SEND_WITH_FLAG(ret, line, mid, argc, INT2FIX(flag));
if (lskip) ADD_LABEL(ret, lskip);
ADD_INSN(ret, line, pop);
break;
}
case NODE_PRELUDE:{
const rb_compile_option_t *orig_opt = ISEQ_COMPILE_DATA(iseq)->option;
rb_compile_option_t new_opt = *orig_opt;
if (node->nd_compile_option) {
rb_iseq_make_compile_option(&new_opt, node->nd_compile_option);
ISEQ_COMPILE_DATA(iseq)->option = &new_opt;
}
if (!new_opt.coverage_enabled) ISEQ_COVERAGE_SET(iseq, Qfalse);
CHECK(COMPILE_POPPED(ret, "prelude", node->nd_head));
CHECK(COMPILE_(ret, "body", node->nd_body, popped));
ISEQ_COMPILE_DATA(iseq)->option = orig_opt;
/* Do NOT restore ISEQ_COVERAGE!
* If ISEQ_COVERAGE is not false, finish_iseq_build function in iseq.c
* will initialize the counter array of line coverage.
* We keep ISEQ_COVERAGE as nil to disable this initialization.
* This is not harmful assuming that NODE_PRELUDE pragma does not occur
* in NODE tree except the root.
*/
break;
}
case NODE_LAMBDA:{
/* compile same as lambda{...} */
const rb_iseq_t *block = NEW_CHILD_ISEQ(node->nd_body, make_name_for_block(iseq), ISEQ_TYPE_BLOCK, line);
VALUE argc = INT2FIX(0);
ADD_INSN1(ret, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
ADD_CALL_WITH_BLOCK(ret, line, idLambda, argc, block);
if (popped) {
ADD_INSN(ret, line, pop);
}
break;
}
default:
UNKNOWN_NODE("iseq_compile_each", node, COMPILE_NG);
ng:
debug_node_end();
return COMPILE_NG;
}
debug_node_end();
return COMPILE_OK;
}
/***************************/
/* instruction information */
/***************************/
static int
insn_data_length(INSN *iobj)
{
return insn_len(iobj->insn_id);
}
static int
calc_sp_depth(int depth, INSN *insn)
{
return insn_stack_increase(depth, insn->insn_id, insn->operands);
}
static VALUE
opobj_inspect(VALUE obj)
{
struct RBasic *r = (struct RBasic *) obj;
if (!SPECIAL_CONST_P(r) && r->klass == 0) {
switch (BUILTIN_TYPE(r)) {
case T_STRING:
obj = rb_str_new_cstr(RSTRING_PTR(obj));
break;
case T_ARRAY:
obj = rb_ary_dup(obj);
break;
}
}
return rb_inspect(obj);
}
static VALUE
insn_data_to_s_detail(INSN *iobj)
{
VALUE str = rb_sprintf("%-20s ", insn_name(iobj->insn_id));
if (iobj->operands) {
const char *types = insn_op_types(iobj->insn_id);
int j;
for (j = 0; types[j]; j++) {
char type = types[j];
switch (type) {
case TS_OFFSET: /* label(destination position) */
{
LABEL *lobj = (LABEL *)OPERAND_AT(iobj, j);
rb_str_catf(str, LABEL_FORMAT, lobj->label_no);
break;
}
break;
case TS_ISEQ: /* iseq */
{
rb_iseq_t *iseq = (rb_iseq_t *)OPERAND_AT(iobj, j);
VALUE val = Qnil;
if (0 && iseq) { /* TODO: invalidate now */
val = (VALUE)iseq;
}
rb_str_concat(str, opobj_inspect(val));
}
break;
case TS_LINDEX:
case TS_NUM: /* ulong */
case TS_VALUE: /* VALUE */
{
VALUE v = OPERAND_AT(iobj, j);
rb_str_concat(str, opobj_inspect(v));
break;
}
case TS_ID: /* ID */
rb_str_concat(str, opobj_inspect(OPERAND_AT(iobj, j)));
break;
case TS_GENTRY:
{
struct rb_global_entry *entry = (struct rb_global_entry *)
(OPERAND_AT(iobj, j) & (~1));
rb_str_append(str, rb_id2str(entry->id));
break;
}
case TS_IC: /* inline cache */
rb_str_catf(str, "<ic:%d>", FIX2INT(OPERAND_AT(iobj, j)));
break;
case TS_CALLINFO: /* call info */
{
struct rb_call_info *ci = (struct rb_call_info *)OPERAND_AT(iobj, j);
rb_str_cat2(str, "<callinfo:");
if (ci->mid) rb_str_catf(str, "%"PRIsVALUE, rb_id2str(ci->mid));
rb_str_catf(str, ", %d>", ci->orig_argc);
break;
}
case TS_CALLCACHE: /* call cache */
{
rb_str_catf(str, "<call cache>");
break;
}
case TS_CDHASH: /* case/when condition cache */
rb_str_cat2(str, "<ch>");
break;
case TS_FUNCPTR:
{
rb_insn_func_t func = (rb_insn_func_t)OPERAND_AT(iobj, j);
#ifdef HAVE_DLADDR
Dl_info info;
if (dladdr(func, &info) && info.dli_sname) {
rb_str_cat2(str, info.dli_sname);
break;
}
#endif
rb_str_catf(str, "<%p>", func);
}
break;
default:{
rb_raise(rb_eSyntaxError, "unknown operand type: %c", type);
}
}
if (types[j + 1]) {
rb_str_cat2(str, ", ");
}
}
}
return str;
}
static void
dump_disasm_list(const LINK_ELEMENT *link)
{
dump_disasm_list_with_cursor(link, NULL, NULL);
}
static void
dump_disasm_list_with_cursor(const LINK_ELEMENT *link, const LINK_ELEMENT *curr, const LABEL *dest)
{
int pos = 0;
INSN *iobj;
LABEL *lobj;
VALUE str;
printf("-- raw disasm--------\n");
while (link) {
if (curr) printf(curr == link ? "*" : " ");
switch (link->type) {
case ISEQ_ELEMENT_INSN:
{
iobj = (INSN *)link;
str = insn_data_to_s_detail(iobj);
printf("%04d %-65s(%4u)\n", pos, StringValueCStr(str), iobj->insn_info.line_no);
pos += insn_data_length(iobj);
break;
}
case ISEQ_ELEMENT_LABEL:
{
lobj = (LABEL *)link;
printf(LABEL_FORMAT"%s\n", lobj->label_no, dest == lobj ? " <---" : "");
break;
}
case ISEQ_ELEMENT_TRACE:
{
TRACE *trace = (TRACE *)link;
printf("trace: %0x\n", trace->event);
break;
}
case ISEQ_ELEMENT_ADJUST:
{
ADJUST *adjust = (ADJUST *)link;
printf("adjust: [label: %d]\n", adjust->label ? adjust->label->label_no : -1);
break;
}
default:
/* ignore */
rb_raise(rb_eSyntaxError, "dump_disasm_list error: %ld\n", FIX2LONG(link->type));
}
link = link->next;
}
printf("---------------------\n");
fflush(stdout);
}
const char *
rb_insns_name(int i)
{
return insn_name_info[i];
}
VALUE
rb_insns_name_array(void)
{
VALUE ary = rb_ary_new();
int i;
for (i = 0; i < VM_INSTRUCTION_SIZE; i++) {
rb_ary_push(ary, rb_fstring_cstr(insn_name_info[i]));
}
return rb_obj_freeze(ary);
}
static LABEL *
register_label(rb_iseq_t *iseq, struct st_table *labels_table, VALUE obj)
{
LABEL *label = 0;
st_data_t tmp;
obj = rb_to_symbol_type(obj);
if (st_lookup(labels_table, obj, &tmp) == 0) {
label = NEW_LABEL(0);
st_insert(labels_table, obj, (st_data_t)label);
}
else {
label = (LABEL *)tmp;
}
LABEL_REF(label);
return label;
}
static VALUE
get_exception_sym2type(VALUE sym)
{
#undef rb_intern
#define rb_intern(str) rb_intern_const(str)
static VALUE symRescue, symEnsure, symRetry;
static VALUE symBreak, symRedo, symNext;
if (symRescue == 0) {
symRescue = ID2SYM(rb_intern("rescue"));
symEnsure = ID2SYM(rb_intern("ensure"));
symRetry = ID2SYM(rb_intern("retry"));
symBreak = ID2SYM(rb_intern("break"));
symRedo = ID2SYM(rb_intern("redo"));
symNext = ID2SYM(rb_intern("next"));
}
if (sym == symRescue) return CATCH_TYPE_RESCUE;
if (sym == symEnsure) return CATCH_TYPE_ENSURE;
if (sym == symRetry) return CATCH_TYPE_RETRY;
if (sym == symBreak) return CATCH_TYPE_BREAK;
if (sym == symRedo) return CATCH_TYPE_REDO;
if (sym == symNext) return CATCH_TYPE_NEXT;
rb_raise(rb_eSyntaxError, "invalid exception symbol: %+"PRIsVALUE, sym);
return 0;
}
static int
iseq_build_from_ary_exception(rb_iseq_t *iseq, struct st_table *labels_table,
VALUE exception)
{
int i;
for (i=0; i<RARRAY_LEN(exception); i++) {
const rb_iseq_t *eiseq;
VALUE v, type;
const VALUE *ptr;
LABEL *lstart, *lend, *lcont;
unsigned int sp;
v = rb_to_array_type(RARRAY_AREF(exception, i));
if (RARRAY_LEN(v) != 6) {
rb_raise(rb_eSyntaxError, "wrong exception entry");
}
ptr = RARRAY_CONST_PTR(v);
type = get_exception_sym2type(ptr[0]);
if (ptr[1] == Qnil) {
eiseq = NULL;
}
else {
eiseq = rb_iseqw_to_iseq(rb_iseq_load(ptr[1], (VALUE)iseq, Qnil));
}
lstart = register_label(iseq, labels_table, ptr[2]);
lend = register_label(iseq, labels_table, ptr[3]);
lcont = register_label(iseq, labels_table, ptr[4]);
sp = NUM2UINT(ptr[5]);
/* TODO: Dirty Hack! Fix me */
if (type == CATCH_TYPE_RESCUE ||
type == CATCH_TYPE_BREAK ||
type == CATCH_TYPE_NEXT) {
++sp;
}
lcont->sp = sp;
ADD_CATCH_ENTRY(type, lstart, lend, eiseq, lcont);
RB_GC_GUARD(v);
}
return COMPILE_OK;
}
static struct st_table *
insn_make_insn_table(void)
{
struct st_table *table;
int i;
table = st_init_numtable();
for (i=0; i<VM_INSTRUCTION_SIZE; i++) {
st_insert(table, ID2SYM(rb_intern(insn_name(i))), i);
}
return table;
}
static const rb_iseq_t *
iseq_build_load_iseq(const rb_iseq_t *iseq, VALUE op)
{
VALUE iseqw;
const rb_iseq_t *loaded_iseq;
if (RB_TYPE_P(op, T_ARRAY)) {
iseqw = rb_iseq_load(op, (VALUE)iseq, Qnil);
}
else if (CLASS_OF(op) == rb_cISeq) {
iseqw = op;
}
else {
rb_raise(rb_eSyntaxError, "ISEQ is required");
}
loaded_iseq = rb_iseqw_to_iseq(iseqw);
iseq_add_mark_object(iseq, (VALUE)loaded_iseq);
return loaded_iseq;
}
static VALUE
iseq_build_callinfo_from_hash(rb_iseq_t *iseq, VALUE op)
{
ID mid = 0;
int orig_argc = 0;
unsigned int flag = 0;
struct rb_call_info_kw_arg *kw_arg = 0;
if (!NIL_P(op)) {
VALUE vmid = rb_hash_aref(op, ID2SYM(rb_intern("mid")));
VALUE vflag = rb_hash_aref(op, ID2SYM(rb_intern("flag")));
VALUE vorig_argc = rb_hash_aref(op, ID2SYM(rb_intern("orig_argc")));
VALUE vkw_arg = rb_hash_aref(op, ID2SYM(rb_intern("kw_arg")));
if (!NIL_P(vmid)) mid = SYM2ID(vmid);
if (!NIL_P(vflag)) flag = NUM2UINT(vflag);
if (!NIL_P(vorig_argc)) orig_argc = FIX2INT(vorig_argc);
if (!NIL_P(vkw_arg)) {
int i;
int len = RARRAY_LENINT(vkw_arg);
size_t n = rb_call_info_kw_arg_bytes(len);
kw_arg = xmalloc(n);
kw_arg->keyword_len = len;
for (i = 0; i < len; i++) {
VALUE kw = RARRAY_AREF(vkw_arg, i);
SYM2ID(kw); /* make immortal */
kw_arg->keywords[i] = kw;
}
}
}
return (VALUE)new_callinfo(iseq, mid, orig_argc, flag, kw_arg, (flag & VM_CALL_ARGS_SIMPLE) == 0);
}
static rb_event_flag_t
event_name_to_flag(VALUE sym)
{
#define CHECK_EVENT(ev) if (sym == ID2SYM(rb_intern(#ev))) return ev;
CHECK_EVENT(RUBY_EVENT_LINE);
CHECK_EVENT(RUBY_EVENT_CLASS);
CHECK_EVENT(RUBY_EVENT_END);
CHECK_EVENT(RUBY_EVENT_CALL);
CHECK_EVENT(RUBY_EVENT_RETURN);
CHECK_EVENT(RUBY_EVENT_B_CALL);
CHECK_EVENT(RUBY_EVENT_B_RETURN);
#undef CHECK_EVENT
return RUBY_EVENT_NONE;
}
static int
iseq_build_from_ary_body(rb_iseq_t *iseq, LINK_ANCHOR *const anchor,
VALUE body, VALUE labels_wrapper)
{
/* TODO: body should be frozen */
const VALUE *ptr = RARRAY_CONST_PTR(body);
long i, len = RARRAY_LEN(body);
struct st_table *labels_table = DATA_PTR(labels_wrapper);
int j;
int line_no = 0;
int ret = COMPILE_OK;
/*
* index -> LABEL *label
*/
static struct st_table *insn_table;
if (insn_table == 0) {
insn_table = insn_make_insn_table();
}
for (i=0; i<len; i++) {
VALUE obj = ptr[i];
if (SYMBOL_P(obj)) {
rb_event_flag_t event;
if ((event = event_name_to_flag(obj)) != RUBY_EVENT_NONE) {
ADD_TRACE(anchor, event);
}
else {
LABEL *label = register_label(iseq, labels_table, obj);
ADD_LABEL(anchor, label);
}
}
else if (FIXNUM_P(obj)) {
line_no = NUM2INT(obj);
}
else if (RB_TYPE_P(obj, T_ARRAY)) {
VALUE *argv = 0;
int argc = RARRAY_LENINT(obj) - 1;
st_data_t insn_id;
VALUE insn;
insn = (argc < 0) ? Qnil : RARRAY_AREF(obj, 0);
if (st_lookup(insn_table, (st_data_t)insn, &insn_id) == 0) {
/* TODO: exception */
COMPILE_ERROR(iseq, line_no,
"unknown instruction: %+"PRIsVALUE, insn);
ret = COMPILE_NG;
break;
}
if (argc != insn_len((VALUE)insn_id)-1) {
COMPILE_ERROR(iseq, line_no,
"operand size mismatch");
ret = COMPILE_NG;
break;
}
if (argc > 0) {
argv = compile_data_alloc(iseq, sizeof(VALUE) * argc);
for (j=0; j<argc; j++) {
VALUE op = rb_ary_entry(obj, j+1);
switch (insn_op_type((VALUE)insn_id, j)) {
case TS_OFFSET: {
LABEL *label = register_label(iseq, labels_table, op);
argv[j] = (VALUE)label;
break;
}
case TS_LINDEX:
case TS_NUM:
(void)NUM2INT(op);
argv[j] = op;
break;
case TS_VALUE:
argv[j] = op;
iseq_add_mark_object(iseq, op);
break;
case TS_ISEQ:
{
if (op != Qnil) {
argv[j] = (VALUE)iseq_build_load_iseq(iseq, op);
}
else {
argv[j] = 0;
}
}
break;
case TS_GENTRY:
op = rb_to_symbol_type(op);
argv[j] = (VALUE)rb_global_entry(SYM2ID(op));
break;
case TS_IC:
argv[j] = op;
if (NUM2UINT(op) >= iseq->body->is_size) {
iseq->body->is_size = NUM2INT(op) + 1;
}
break;
case TS_CALLINFO:
argv[j] = iseq_build_callinfo_from_hash(iseq, op);
break;
case TS_CALLCACHE:
argv[j] = Qfalse;
break;
case TS_ID:
argv[j] = rb_to_symbol_type(op);
break;
case TS_CDHASH:
{
int i;
VALUE map = rb_hash_new_with_size(RARRAY_LEN(op)/2);
rb_hash_tbl_raw(map)->type = &cdhash_type;
op = rb_to_array_type(op);
for (i=0; i<RARRAY_LEN(op); i+=2) {
VALUE key = RARRAY_AREF(op, i);
VALUE sym = RARRAY_AREF(op, i+1);
LABEL *label =
register_label(iseq, labels_table, sym);
rb_hash_aset(map, key, (VALUE)label | 1);
}
RB_GC_GUARD(op);
argv[j] = map;
rb_iseq_add_mark_object(iseq, map);
}
break;
case TS_FUNCPTR:
{
#if SIZEOF_VALUE <= SIZEOF_LONG
long funcptr = NUM2LONG(op);
#else
LONG_LONG funcptr = NUM2LL(op);
#endif
argv[j] = (VALUE)funcptr;
}
break;
default:
rb_raise(rb_eSyntaxError, "unknown operand: %c", insn_op_type((VALUE)insn_id, j));
}
}
}
ADD_ELEM(anchor,
(LINK_ELEMENT*)new_insn_core(iseq, line_no,
(enum ruby_vminsn_type)insn_id, argc, argv));
}
else {
rb_raise(rb_eTypeError, "unexpected object for instruction");
}
}
DATA_PTR(labels_wrapper) = 0;
validate_labels(iseq, labels_table);
if (!ret) return ret;
return iseq_setup(iseq, anchor);
}
#define CHECK_ARRAY(v) rb_to_array_type(v)
#define CHECK_SYMBOL(v) rb_to_symbol_type(v)
static int
int_param(int *dst, VALUE param, VALUE sym)
{
VALUE val = rb_hash_aref(param, sym);
if (FIXNUM_P(val)) {
*dst = FIX2INT(val);
return TRUE;
}
else if (!NIL_P(val)) {
rb_raise(rb_eTypeError, "invalid %+"PRIsVALUE" Fixnum: %+"PRIsVALUE,
sym, val);
}
return FALSE;
}
static const struct rb_iseq_param_keyword *
iseq_build_kw(rb_iseq_t *iseq, VALUE params, VALUE keywords)
{
int i, j;
int len = RARRAY_LENINT(keywords);
int default_len;
VALUE key, sym, default_val;
VALUE *dvs;
ID *ids;
struct rb_iseq_param_keyword *keyword = ZALLOC(struct rb_iseq_param_keyword);
iseq->body->param.flags.has_kw = TRUE;
keyword->num = len;
#define SYM(s) ID2SYM(rb_intern(#s))
(void)int_param(&keyword->bits_start, params, SYM(kwbits));
i = keyword->bits_start - keyword->num;
ids = (ID *)&iseq->body->local_table[i];
#undef SYM
/* required args */
for (i = 0; i < len; i++) {
VALUE val = RARRAY_AREF(keywords, i);
if (!SYMBOL_P(val)) {
goto default_values;
}
ids[i] = SYM2ID(val);
keyword->required_num++;
}
default_values: /* note: we intentionally preserve `i' from previous loop */
default_len = len - i;
if (default_len == 0) {
keyword->table = ids;
return keyword;
}
dvs = ALLOC_N(VALUE, (unsigned int)default_len);
for (j = 0; i < len; i++, j++) {
key = RARRAY_AREF(keywords, i);
CHECK_ARRAY(key);
switch (RARRAY_LEN(key)) {
case 1:
sym = RARRAY_AREF(key, 0);
default_val = Qundef;
break;
case 2:
sym = RARRAY_AREF(key, 0);
default_val = RARRAY_AREF(key, 1);
break;
default:
rb_raise(rb_eTypeError, "keyword default has unsupported len %+"PRIsVALUE, key);
}
ids[i] = SYM2ID(sym);
dvs[j] = default_val;
}
keyword->table = ids;
keyword->default_values = dvs;
return keyword;
}
void
rb_iseq_build_from_ary(rb_iseq_t *iseq, VALUE misc, VALUE locals, VALUE params,
VALUE exception, VALUE body)
{
#define SYM(s) ID2SYM(rb_intern(#s))
int i, len;
unsigned int arg_size, local_size, stack_max;
ID *tbl;
struct st_table *labels_table = st_init_numtable();
VALUE labels_wrapper = Data_Wrap_Struct(0, 0, st_free_table, labels_table);
VALUE arg_opt_labels = rb_hash_aref(params, SYM(opt));
VALUE keywords = rb_hash_aref(params, SYM(keyword));
VALUE sym_arg_rest = ID2SYM(rb_intern("#arg_rest"));
DECL_ANCHOR(anchor);
INIT_ANCHOR(anchor);
len = RARRAY_LENINT(locals);
iseq->body->local_table_size = len;
iseq->body->local_table = tbl = len > 0 ? (ID *)ALLOC_N(ID, iseq->body->local_table_size) : NULL;
for (i = 0; i < len; i++) {
VALUE lv = RARRAY_AREF(locals, i);
if (sym_arg_rest == lv) {
tbl[i] = 0;
}
else {
tbl[i] = FIXNUM_P(lv) ? (ID)FIX2LONG(lv) : SYM2ID(CHECK_SYMBOL(lv));
}
}
#define INT_PARAM(F) int_param(&iseq->body->param.F, params, SYM(F))
if (INT_PARAM(lead_num)) {
iseq->body->param.flags.has_lead = TRUE;
}
if (INT_PARAM(post_num)) iseq->body->param.flags.has_post = TRUE;
if (INT_PARAM(post_start)) iseq->body->param.flags.has_post = TRUE;
if (INT_PARAM(rest_start)) iseq->body->param.flags.has_rest = TRUE;
if (INT_PARAM(block_start)) iseq->body->param.flags.has_block = TRUE;
#undef INT_PARAM
{
#define INT_PARAM(F) F = (int_param(&x, misc, SYM(F)) ? (unsigned int)x : 0)
int x;
INT_PARAM(arg_size);
INT_PARAM(local_size);
INT_PARAM(stack_max);
#undef INT_PARAM
}
if (RB_TYPE_P(arg_opt_labels, T_ARRAY)) {
len = RARRAY_LENINT(arg_opt_labels);
iseq->body->param.flags.has_opt = !!(len - 1 >= 0);
if (iseq->body->param.flags.has_opt) {
VALUE *opt_table = ALLOC_N(VALUE, len);
for (i = 0; i < len; i++) {
VALUE ent = RARRAY_AREF(arg_opt_labels, i);
LABEL *label = register_label(iseq, labels_table, ent);
opt_table[i] = (VALUE)label;
}
iseq->body->param.opt_num = len - 1;
iseq->body->param.opt_table = opt_table;
}
}
else if (!NIL_P(arg_opt_labels)) {
rb_raise(rb_eTypeError, ":opt param is not an array: %+"PRIsVALUE,
arg_opt_labels);
}
if (RB_TYPE_P(keywords, T_ARRAY)) {
iseq->body->param.keyword = iseq_build_kw(iseq, params, keywords);
}
else if (!NIL_P(keywords)) {
rb_raise(rb_eTypeError, ":keywords param is not an array: %+"PRIsVALUE,
keywords);
}
if (Qtrue == rb_hash_aref(params, SYM(ambiguous_param0))) {
iseq->body->param.flags.ambiguous_param0 = TRUE;
}
if (int_param(&i, params, SYM(kwrest))) {
struct rb_iseq_param_keyword *keyword = (struct rb_iseq_param_keyword *)iseq->body->param.keyword;
if (keyword == NULL) {
iseq->body->param.keyword = keyword = ZALLOC(struct rb_iseq_param_keyword);
}
keyword->rest_start = i;
iseq->body->param.flags.has_kwrest = TRUE;
}
#undef SYM
iseq_calc_param_size(iseq);
/* exception */
iseq_build_from_ary_exception(iseq, labels_table, exception);
/* body */
iseq_build_from_ary_body(iseq, anchor, body, labels_wrapper);
iseq->body->param.size = arg_size;
iseq->body->local_table_size = local_size;
iseq->body->stack_max = stack_max;
}
/* for parser */
int
rb_dvar_defined(ID id, const struct rb_block *base_block)
{
const rb_iseq_t *iseq;
if (base_block && (iseq = vm_block_iseq(base_block)) != NULL) {
while (iseq->body->type == ISEQ_TYPE_BLOCK ||
iseq->body->type == ISEQ_TYPE_RESCUE ||
iseq->body->type == ISEQ_TYPE_ENSURE ||
iseq->body->type == ISEQ_TYPE_EVAL ||
iseq->body->type == ISEQ_TYPE_MAIN
) {
unsigned int i;
for (i = 0; i < iseq->body->local_table_size; i++) {
if (iseq->body->local_table[i] == id) {
return 1;
}
}
iseq = iseq->body->parent_iseq;
}
}
return 0;
}
int
rb_local_defined(ID id, const struct rb_block *base_block)
{
const rb_iseq_t *iseq;
if (base_block && (iseq = vm_block_iseq(base_block)) != NULL) {
unsigned int i;
iseq = iseq->body->local_iseq;
for (i=0; i<iseq->body->local_table_size; i++) {
if (iseq->body->local_table[i] == id) {
return 1;
}
}
}
return 0;
}
static int
caller_location(VALUE *path, VALUE *realpath)
{
const rb_execution_context_t *ec = GET_EC();
const rb_control_frame_t *const cfp =
rb_vm_get_ruby_level_next_cfp(ec, ec->cfp);
if (cfp) {
int line = rb_vm_get_sourceline(cfp);
*path = rb_iseq_path(cfp->iseq);
*realpath = rb_iseq_realpath(cfp->iseq);
return line;
}
else {
*path = rb_fstring_cstr("<compiled>");
*realpath = *path;
return 1;
}
}
typedef struct {
VALUE arg;
rb_insn_func_t func;
int line;
} accessor_args;
static const rb_iseq_t *
method_for_self(VALUE name, VALUE arg, rb_insn_func_t func,
VALUE (*build)(rb_iseq_t *, LINK_ANCHOR *const, VALUE))
{
VALUE path, realpath;
accessor_args acc;
acc.arg = arg;
acc.func = func;
acc.line = caller_location(&path, &realpath);
return rb_iseq_new_with_opt((const NODE *)IFUNC_NEW(build, (VALUE)&acc, 0),
rb_sym2str(name), path, realpath,
INT2FIX(acc.line), 0, ISEQ_TYPE_METHOD, 0);
}
static VALUE
for_self_aref(rb_iseq_t *iseq, LINK_ANCHOR *const ret, VALUE a)
{
const accessor_args *const args = (void *)a;
const int line = args->line;
iseq_set_local_table(iseq, 0);
iseq->body->param.lead_num = 0;
iseq->body->param.size = 0;
ADD_INSN1(ret, line, putobject, args->arg);
ADD_INSN1(ret, line, opt_call_c_function, (VALUE)args->func);
return Qnil;
}
static VALUE
for_self_aset(rb_iseq_t *iseq, LINK_ANCHOR *const ret, VALUE a)
{
const accessor_args *const args = (void *)a;
const int line = args->line;
static const ID vars[] = {1, idUScore};
iseq_set_local_table(iseq, vars);
iseq->body->param.lead_num = 1;
iseq->body->param.size = 1;
ADD_GETLOCAL(ret, line, numberof(vars)-1, 0);
ADD_INSN1(ret, line, putobject, args->arg);
ADD_INSN1(ret, line, opt_call_c_function, (VALUE)args->func);
ADD_INSN(ret, line, pop);
return Qnil;
}
/*
* func (index) -> (value)
*/
const rb_iseq_t *
rb_method_for_self_aref(VALUE name, VALUE arg, rb_insn_func_t func)
{
return method_for_self(name, arg, func, for_self_aref);
}
/*
* func (index, value) -> (index, value)
*/
const rb_iseq_t *
rb_method_for_self_aset(VALUE name, VALUE arg, rb_insn_func_t func)
{
return method_for_self(name, arg, func, for_self_aset);
}
/* ISeq binary format */
typedef unsigned int ibf_offset_t;
#define IBF_OFFSET(ptr) ((ibf_offset_t)(VALUE)(ptr))
struct ibf_header {
char magic[4]; /* YARB */
unsigned int major_version;
unsigned int minor_version;
unsigned int size;
unsigned int extra_size;
unsigned int iseq_list_size;
unsigned int id_list_size;
unsigned int object_list_size;
ibf_offset_t iseq_list_offset;
ibf_offset_t id_list_offset;
ibf_offset_t object_list_offset;
};
struct ibf_id_entry {
enum {
ibf_id_enc_ascii,
ibf_id_enc_utf8,
ibf_id_enc_other
} enc : 2;
char body[1];
};
struct ibf_dump {
VALUE str;
VALUE iseq_list; /* [iseq0 offset, ...] */
VALUE obj_list; /* [objs] */
st_table *iseq_table; /* iseq -> iseq number */
st_table *id_table; /* id -> id number */
};
rb_iseq_t * iseq_alloc(void);
struct ibf_load {
const char *buff;
const struct ibf_header *header;
ID *id_list; /* [id0, ...] */
VALUE iseq_list; /* [iseq0, ...] */
VALUE obj_list; /* [obj0, ...] */
VALUE loader_obj;
VALUE str;
rb_iseq_t *iseq;
};
static ibf_offset_t
ibf_dump_pos(struct ibf_dump *dump)
{
return (unsigned int)rb_str_strlen(dump->str);
}
static ibf_offset_t
ibf_dump_write(struct ibf_dump *dump, const void *buff, unsigned long size)
{
ibf_offset_t pos = ibf_dump_pos(dump);
rb_str_cat(dump->str, (const char *)buff, size);
/* TODO: overflow check */
return pos;
}
static void
ibf_dump_overwrite(struct ibf_dump *dump, void *buff, unsigned int size, long offset)
{
VALUE str = dump->str;
char *ptr = RSTRING_PTR(str);
if ((unsigned long)(size + offset) > (unsigned long)RSTRING_LEN(str))
rb_bug("ibf_dump_overwrite: overflow");
memcpy(ptr + offset, buff, size);
}
static void *
ibf_load_alloc(const struct ibf_load *load, ibf_offset_t offset, int size)
{
void *buff = ruby_xmalloc(size);
memcpy(buff, load->buff + offset, size);
return buff;
}
#define IBF_W(b, type, n) (type *)(VALUE)ibf_dump_write(dump, (b), sizeof(type) * (n))
#define IBF_WV(variable) ibf_dump_write(dump, &(variable), sizeof(variable))
#define IBF_WP(b, type, n) ibf_dump_write(dump, (b), sizeof(type) * (n))
#define IBF_R(val, type, n) (type *)ibf_load_alloc(load, IBF_OFFSET(val), sizeof(type) * (n))
static int
ibf_table_lookup(struct st_table *table, st_data_t key)
{
st_data_t val;
if (st_lookup(table, key, &val)) {
return (int)val;
}
else {
return -1;
}
}
static int
ibf_table_index(struct st_table *table, st_data_t key)
{
int index = ibf_table_lookup(table, key);
if (index < 0) { /* not found */
index = (int)table->num_entries;
st_insert(table, key, (st_data_t)index);
}
return index;
}
/* dump/load generic */
static VALUE ibf_load_object(const struct ibf_load *load, VALUE object_index);
static rb_iseq_t *ibf_load_iseq(const struct ibf_load *load, const rb_iseq_t *index_iseq);
static VALUE
ibf_dump_object(struct ibf_dump *dump, VALUE obj)
{
long index = RARRAY_LEN(dump->obj_list);
long i;
for (i=0; i<index; i++) {
if (RARRAY_AREF(dump->obj_list, i) == obj) return (VALUE)i; /* dedup */
}
rb_ary_push(dump->obj_list, obj);
return (VALUE)index;
}
static VALUE
ibf_dump_id(struct ibf_dump *dump, ID id)
{
return (VALUE)ibf_table_index(dump->id_table, (st_data_t)id);
}
static ID
ibf_load_id(const struct ibf_load *load, const ID id_index)
{
ID id;
if (id_index == 0) {
id = 0;
}
else {
id = load->id_list[(long)id_index];
if (id == 0) {
long *indices = (long *)(load->buff + load->header->id_list_offset);
VALUE str = ibf_load_object(load, indices[id_index]);
id = NIL_P(str) ? 0 : rb_intern_str(str); /* str == nil -> internal junk id */
load->id_list[(long)id_index] = id;
}
}
return id;
}
/* dump/load: code */
static VALUE
ibf_dump_callinfo(struct ibf_dump *dump, const struct rb_call_info *ci)
{
return (ci->flag & VM_CALL_KWARG) ? Qtrue : Qfalse;
}
static ibf_offset_t ibf_dump_iseq_each(struct ibf_dump *dump, const rb_iseq_t *iseq);
static rb_iseq_t *
ibf_dump_iseq(struct ibf_dump *dump, const rb_iseq_t *iseq)
{
if (iseq == NULL) {
return (rb_iseq_t *)-1;
}
else {
int iseq_index = ibf_table_lookup(dump->iseq_table, (st_data_t)iseq);
if (iseq_index < 0) {
iseq_index = ibf_table_index(dump->iseq_table, (st_data_t)iseq);
rb_ary_store(dump->iseq_list, iseq_index, LONG2NUM(ibf_dump_iseq_each(dump, rb_iseq_check(iseq))));
}
return (rb_iseq_t *)(VALUE)iseq_index;
}
}
static VALUE
ibf_dump_gentry(struct ibf_dump *dump, const struct rb_global_entry *entry)
{
return (VALUE)ibf_dump_id(dump, entry->id);
}
static VALUE
ibf_load_gentry(const struct ibf_load *load, const struct rb_global_entry *entry)
{
ID gid = ibf_load_id(load, (ID)(VALUE)entry);
return (VALUE)rb_global_entry(gid);
}
static VALUE *
ibf_dump_code(struct ibf_dump *dump, const rb_iseq_t *iseq)
{
const int iseq_size = iseq->body->iseq_size;
int code_index;
VALUE *code;
const VALUE *orig_code = rb_iseq_original_iseq(iseq);
code = ALLOCA_N(VALUE, iseq_size);
for (code_index=0; code_index<iseq_size;) {
const VALUE insn = orig_code[code_index];
const char *types = insn_op_types(insn);
int op_index;
code[code_index++] = (VALUE)insn;
for (op_index=0; types[op_index]; op_index++, code_index++) {
VALUE op = orig_code[code_index];
switch (types[op_index]) {
case TS_CDHASH:
case TS_VALUE:
code[code_index] = ibf_dump_object(dump, op);
break;
case TS_ISEQ:
code[code_index] = (VALUE)ibf_dump_iseq(dump, (const rb_iseq_t *)op);
break;
case TS_IC:
{
unsigned int i;
for (i=0; i<iseq->body->is_size; i++) {
if (op == (VALUE)&iseq->body->is_entries[i]) {
break;
}
}
code[code_index] = i;
}
break;
case TS_CALLINFO:
code[code_index] = ibf_dump_callinfo(dump, (const struct rb_call_info *)op);
break;
case TS_CALLCACHE:
code[code_index] = 0;
break;
case TS_ID:
code[code_index] = ibf_dump_id(dump, (ID)op);
break;
case TS_GENTRY:
code[code_index] = ibf_dump_gentry(dump, (const struct rb_global_entry *)op);
break;
case TS_FUNCPTR:
rb_raise(rb_eRuntimeError, "TS_FUNCPTR is not supported");
break;
default:
code[code_index] = op;
break;
}
}
assert(insn_len(insn) == op_index+1);
}
return IBF_W(code, VALUE, iseq_size);
}
static VALUE *
ibf_load_code(const struct ibf_load *load, const rb_iseq_t *iseq, const struct rb_iseq_constant_body *body)
{
const int iseq_size = body->iseq_size;
int code_index;
VALUE *code = IBF_R(body->iseq_encoded, VALUE, iseq_size);
struct rb_call_info *ci_entries = iseq->body->ci_entries;
struct rb_call_info_with_kwarg *ci_kw_entries = (struct rb_call_info_with_kwarg *)&iseq->body->ci_entries[iseq->body->ci_size];
struct rb_call_cache *cc_entries = iseq->body->cc_entries;
union iseq_inline_storage_entry *is_entries = iseq->body->is_entries;
for (code_index=0; code_index<iseq_size;) {
const VALUE insn = code[code_index++];
const char *types = insn_op_types(insn);
int op_index;
for (op_index=0; types[op_index]; op_index++, code_index++) {
VALUE op = code[code_index];
switch (types[op_index]) {
case TS_CDHASH:
case TS_VALUE:
code[code_index] = ibf_load_object(load, op);
break;
case TS_ISEQ:
code[code_index] = (VALUE)ibf_load_iseq(load, (const rb_iseq_t *)op);
break;
case TS_IC:
code[code_index] = (VALUE)&is_entries[(int)op];
break;
case TS_CALLINFO:
code[code_index] = op ? (VALUE)ci_kw_entries++ : (VALUE)ci_entries++; /* op is Qtrue (kw) or Qfalse (!kw) */
break;
case TS_CALLCACHE:
code[code_index] = (VALUE)cc_entries++;
break;
case TS_ID:
code[code_index] = ibf_load_id(load, (ID)op);
break;
case TS_GENTRY:
code[code_index] = ibf_load_gentry(load, (const struct rb_global_entry *)op);
break;
case TS_FUNCPTR:
rb_raise(rb_eRuntimeError, "TS_FUNCPTR is not supported");
break;
default:
/* code[code_index] = op; */
break;
}
}
if (insn_len(insn) != op_index+1) {
rb_raise(rb_eRuntimeError, "operand size mismatch");
}
}
return code;
}
static VALUE *
ibf_dump_param_opt_table(struct ibf_dump *dump, const rb_iseq_t *iseq)
{
int opt_num = iseq->body->param.opt_num;
if (opt_num > 0) {
return IBF_W(iseq->body->param.opt_table, VALUE, opt_num + 1);
}
else {
return NULL;
}
}
static VALUE *
ibf_load_param_opt_table(const struct ibf_load *load, const struct rb_iseq_constant_body *body)
{
int opt_num = body->param.opt_num;
if (opt_num > 0) {
ibf_offset_t offset = IBF_OFFSET(body->param.opt_table);
VALUE *table = ALLOC_N(VALUE, opt_num+1);
MEMCPY(table, load->buff + offset, VALUE, opt_num+1);
return table;
}
else {
return NULL;
}
}
static struct rb_iseq_param_keyword *
ibf_dump_param_keyword(struct ibf_dump *dump, const rb_iseq_t *iseq)
{
const struct rb_iseq_param_keyword *kw = iseq->body->param.keyword;
if (kw) {
struct rb_iseq_param_keyword dump_kw = *kw;
int dv_num = kw->num - kw->required_num;
ID *ids = kw->num > 0 ? ALLOCA_N(ID, kw->num) : NULL;
VALUE *dvs = dv_num > 0 ? ALLOCA_N(VALUE, dv_num) : NULL;
int i;
for (i=0; i<kw->num; i++) ids[i] = (ID)ibf_dump_id(dump, kw->table[i]);
for (i=0; i<dv_num; i++) dvs[i] = (VALUE)ibf_dump_object(dump, kw->default_values[i]);
dump_kw.table = IBF_W(ids, ID, kw->num);
dump_kw.default_values = IBF_W(dvs, VALUE, dv_num);
return IBF_W(&dump_kw, struct rb_iseq_param_keyword, 1);
}
else {
return NULL;
}
}
static const struct rb_iseq_param_keyword *
ibf_load_param_keyword(const struct ibf_load *load, const struct rb_iseq_constant_body *body)
{
if (body->param.keyword) {
struct rb_iseq_param_keyword *kw = IBF_R(body->param.keyword, struct rb_iseq_param_keyword, 1);
ID *ids = IBF_R(kw->table, ID, kw->num);
int dv_num = kw->num - kw->required_num;
VALUE *dvs = IBF_R(kw->default_values, VALUE, dv_num);
int i;
for (i=0; i<kw->num; i++) {
ids[i] = ibf_load_id(load, ids[i]);
}
for (i=0; i<dv_num; i++) {
dvs[i] = ibf_load_object(load, dvs[i]);
}
kw->table = ids;
kw->default_values = dvs;
return kw;
}
else {
return NULL;
}
}
static struct iseq_insn_info_entry *
ibf_dump_insns_info(struct ibf_dump *dump, const rb_iseq_t *iseq)
{
return IBF_W(iseq->body->insns_info, struct iseq_insn_info_entry, iseq->body->insns_info_size);
}
static struct iseq_insn_info_entry *
ibf_load_insns_info(const struct ibf_load *load, const struct rb_iseq_constant_body *body)
{
return IBF_R(body->insns_info, struct iseq_insn_info_entry, body->insns_info_size);
}
static ID *
ibf_dump_local_table(struct ibf_dump *dump, const rb_iseq_t *iseq)
{
const int size = iseq->body->local_table_size;
ID *table = ALLOCA_N(ID, size);
int i;
for (i=0; i<size; i++) {
table[i] = ibf_dump_id(dump, iseq->body->local_table[i]);
}
return IBF_W(table, ID, size);
}
static ID *
ibf_load_local_table(const struct ibf_load *load, const struct rb_iseq_constant_body *body)
{
const int size = body->local_table_size;
if (size > 0) {
ID *table = IBF_R(body->local_table, ID, size);
int i;
for (i=0; i<size; i++) {
table[i] = ibf_load_id(load, table[i]);
}
return table;
}
else {
return NULL;
}
}
static struct iseq_catch_table *
ibf_dump_catch_table(struct ibf_dump *dump, const rb_iseq_t *iseq)
{
const struct iseq_catch_table *table = iseq->body->catch_table;
if (table) {
int byte_size = iseq_catch_table_bytes(iseq->body->catch_table->size);
struct iseq_catch_table *dump_table = (struct iseq_catch_table *)ALLOCA_N(char, byte_size);
unsigned int i;
dump_table->size = table->size;
for (i=0; i<table->size; i++) {
dump_table->entries[i] = table->entries[i];
dump_table->entries[i].iseq = ibf_dump_iseq(dump, table->entries[i].iseq);
}
return (struct iseq_catch_table *)(VALUE)ibf_dump_write(dump, dump_table, byte_size);
}
else {
return NULL;
}
}
static struct iseq_catch_table *
ibf_load_catch_table(const struct ibf_load *load, const struct rb_iseq_constant_body *body)
{
if (body->catch_table) {
struct iseq_catch_table *table;
unsigned int i;
unsigned int size;
size = *(unsigned int *)(load->buff + IBF_OFFSET(body->catch_table));
table = ibf_load_alloc(load, IBF_OFFSET(body->catch_table), iseq_catch_table_bytes(size));
for (i=0; i<size; i++) {
table->entries[i].iseq = ibf_load_iseq(load, table->entries[i].iseq);
}
return table;
}
else {
return NULL;
}
}
static struct rb_call_info *
ibf_dump_ci_entries(struct ibf_dump *dump, const rb_iseq_t *iseq)
{
const unsigned int ci_size = iseq->body->ci_size;
const unsigned int ci_kw_size = iseq->body->ci_kw_size;
const struct rb_call_info *ci_entries = iseq->body->ci_entries;
struct rb_call_info *dump_ci_entries;
struct rb_call_info_with_kwarg *dump_ci_kw_entries;
int byte_size = ci_size * sizeof(struct rb_call_info) +
ci_kw_size * sizeof(struct rb_call_info_with_kwarg);
unsigned int i;
dump_ci_entries = (struct rb_call_info *)ALLOCA_N(char, byte_size);
dump_ci_kw_entries = (struct rb_call_info_with_kwarg *)&dump_ci_entries[ci_size];
memcpy(dump_ci_entries, ci_entries, byte_size);
for (i=0; i<ci_size; i++) { /* conver ID for each ci */
dump_ci_entries[i].mid = ibf_dump_id(dump, dump_ci_entries[i].mid);
}
for (i=0; i<ci_kw_size; i++) {
const struct rb_call_info_kw_arg *kw_arg = dump_ci_kw_entries[i].kw_arg;
int j;
VALUE *keywords = ALLOCA_N(VALUE, kw_arg->keyword_len);
for (j=0; j<kw_arg->keyword_len; j++) {
keywords[j] = (VALUE)ibf_dump_object(dump, kw_arg->keywords[j]); /* kw_arg->keywords[n] is Symbol */
}
dump_ci_kw_entries[i].kw_arg = (struct rb_call_info_kw_arg *)(VALUE)ibf_dump_write(dump, &kw_arg->keyword_len, sizeof(int));
ibf_dump_write(dump, keywords, sizeof(VALUE) * kw_arg->keyword_len);
dump_ci_kw_entries[i].ci.mid = ibf_dump_id(dump, dump_ci_kw_entries[i].ci.mid);
}
return (struct rb_call_info *)(VALUE)ibf_dump_write(dump, dump_ci_entries, byte_size);
}
static struct rb_call_info *
ibf_load_ci_entries(const struct ibf_load *load, const struct rb_iseq_constant_body *body)
{
unsigned int i;
const unsigned int ci_size = body->ci_size;
const unsigned int ci_kw_size = body->ci_kw_size;
struct rb_call_info *ci_entries = ibf_load_alloc(load, IBF_OFFSET(body->ci_entries),
sizeof(struct rb_call_info) * body->ci_size +
sizeof(struct rb_call_info_with_kwarg) * body->ci_kw_size);
struct rb_call_info_with_kwarg *ci_kw_entries = (struct rb_call_info_with_kwarg *)&ci_entries[ci_size];
for (i=0; i<ci_size; i++) {
ci_entries[i].mid = ibf_load_id(load, ci_entries[i].mid);
}
for (i=0; i<ci_kw_size; i++) {
int j;
ibf_offset_t kw_arg_offset = IBF_OFFSET(ci_kw_entries[i].kw_arg);
const int keyword_len = *(int *)(load->buff + kw_arg_offset);
const VALUE *keywords = (VALUE *)(load->buff + kw_arg_offset + sizeof(int));
struct rb_call_info_kw_arg *kw_arg = ruby_xmalloc(sizeof(struct rb_call_info_kw_arg) + sizeof(VALUE) * (keyword_len - 1));
kw_arg->keyword_len = keyword_len;
for (j=0; j<kw_arg->keyword_len; j++) {
kw_arg->keywords[j] = (VALUE)ibf_load_object(load, keywords[j]);
}
ci_kw_entries[i].kw_arg = kw_arg;
ci_kw_entries[i].ci.mid = ibf_load_id(load, ci_kw_entries[i].ci.mid);
}
return ci_entries;
}
static ibf_offset_t
ibf_dump_iseq_each(struct ibf_dump *dump, const rb_iseq_t *iseq)
{
struct rb_iseq_constant_body dump_body;
dump_body = *iseq->body;
dump_body.location.pathobj = ibf_dump_object(dump, dump_body.location.pathobj); /* TODO: freeze */
dump_body.location.base_label = ibf_dump_object(dump, dump_body.location.base_label);
dump_body.location.label = ibf_dump_object(dump, dump_body.location.label);
dump_body.iseq_encoded = ibf_dump_code(dump, iseq);
dump_body.param.opt_table = ibf_dump_param_opt_table(dump, iseq);
dump_body.param.keyword = ibf_dump_param_keyword(dump, iseq);
dump_body.insns_info = ibf_dump_insns_info(dump, iseq);
dump_body.local_table = ibf_dump_local_table(dump, iseq);
dump_body.catch_table = ibf_dump_catch_table(dump, iseq);
dump_body.parent_iseq = ibf_dump_iseq(dump, iseq->body->parent_iseq);
dump_body.local_iseq = ibf_dump_iseq(dump, iseq->body->local_iseq);
dump_body.is_entries = NULL;
dump_body.ci_entries = ibf_dump_ci_entries(dump, iseq);
dump_body.cc_entries = NULL;
dump_body.mark_ary = ISEQ_FLIP_CNT(iseq);
return ibf_dump_write(dump, &dump_body, sizeof(dump_body));
}
static VALUE
ibf_load_location_str(const struct ibf_load *load, VALUE str_index)
{
VALUE str = ibf_load_object(load, str_index);
if (str != Qnil) {
str = rb_fstring(str);
}
return str;
}
static void
ibf_load_iseq_each(const struct ibf_load *load, rb_iseq_t *iseq, ibf_offset_t offset)
{
struct rb_iseq_constant_body *load_body = iseq->body = ZALLOC(struct rb_iseq_constant_body);
const struct rb_iseq_constant_body *body = (struct rb_iseq_constant_body *)(load->buff + offset);
/* memcpy(load_body, load->buff + offset, sizeof(*load_body)); */
load_body->type = body->type;
load_body->stack_max = body->stack_max;
load_body->iseq_size = body->iseq_size;
load_body->param = body->param;
load_body->local_table_size = body->local_table_size;
load_body->is_size = body->is_size;
load_body->ci_size = body->ci_size;
load_body->ci_kw_size = body->ci_kw_size;
load_body->insns_info_size = body->insns_info_size;
RB_OBJ_WRITE(iseq, &load_body->mark_ary, iseq_mark_ary_create((int)body->mark_ary));
{
VALUE realpath = Qnil, path = ibf_load_object(load, body->location.pathobj);
if (RB_TYPE_P(path, T_STRING)) {
realpath = path = rb_fstring(path);
}
else if (RB_TYPE_P(path, T_ARRAY)) {
VALUE pathobj = path;
if (RARRAY_LEN(pathobj) != 2) {
rb_raise(rb_eRuntimeError, "path object size mismatch");
}
path = rb_fstring(RARRAY_AREF(pathobj, 0));
realpath = rb_fstring(RARRAY_AREF(pathobj, 1));
}
else {
rb_raise(rb_eRuntimeError, "unexpected path object");
}
rb_iseq_pathobj_set(iseq, path, realpath);
}
RB_OBJ_WRITE(iseq, &load_body->location.base_label, ibf_load_location_str(load, body->location.base_label));
RB_OBJ_WRITE(iseq, &load_body->location.label, ibf_load_location_str(load, body->location.label));
load_body->location.first_lineno = body->location.first_lineno;
load_body->location.code_range = body->location.code_range;
load_body->is_entries = ZALLOC_N(union iseq_inline_storage_entry, body->is_size);
load_body->ci_entries = ibf_load_ci_entries(load, body);
load_body->cc_entries = ZALLOC_N(struct rb_call_cache, body->ci_size + body->ci_kw_size);
load_body->param.opt_table = ibf_load_param_opt_table(load, body);
load_body->param.keyword = ibf_load_param_keyword(load, body);
load_body->insns_info = ibf_load_insns_info(load, body);
load_body->local_table = ibf_load_local_table(load, body);
load_body->catch_table = ibf_load_catch_table(load, body);
load_body->parent_iseq = ibf_load_iseq(load, body->parent_iseq);
load_body->local_iseq = ibf_load_iseq(load, body->local_iseq);
load_body->iseq_encoded = ibf_load_code(load, iseq, body);
rb_iseq_translate_threaded_code(iseq);
}
static void
ibf_dump_iseq_list(struct ibf_dump *dump, struct ibf_header *header)
{
const long size = RARRAY_LEN(dump->iseq_list);
ibf_offset_t *list = ALLOCA_N(ibf_offset_t, size);
long i;
for (i=0; i<size; i++) {
list[i] = (ibf_offset_t)NUM2LONG(rb_ary_entry(dump->iseq_list, i));
}
header->iseq_list_offset = ibf_dump_write(dump, list, sizeof(ibf_offset_t) * size);
header->iseq_list_size = (unsigned int)size;
}
struct ibf_dump_id_list_i_arg {
struct ibf_dump *dump;
long *list;
int current_i;
};
static int
ibf_dump_id_list_i(st_data_t key, st_data_t val, st_data_t ptr)
{
struct ibf_dump_id_list_i_arg *arg = (struct ibf_dump_id_list_i_arg *)ptr;
int i = (int)val;
ID id = (ID)key;
assert(arg->current_i == i);
arg->current_i++;
if (rb_id2name(id)) {
arg->list[i] = (long)ibf_dump_object(arg->dump, rb_id2str(id));
}
else {
arg->list[i] = 0;
}
return ST_CONTINUE;
}
static void
ibf_dump_id_list(struct ibf_dump *dump, struct ibf_header *header)
{
const long size = dump->id_table->num_entries;
struct ibf_dump_id_list_i_arg arg;
arg.list = ALLOCA_N(long, size);
arg.dump = dump;
arg.current_i = 0;
st_foreach(dump->id_table, ibf_dump_id_list_i, (st_data_t)&arg);
header->id_list_offset = ibf_dump_write(dump, arg.list, sizeof(long) * size);
header->id_list_size = (unsigned int)size;
}
#define IBF_OBJECT_INTERNAL FL_PROMOTED0
/*
* Binary format
* - ibf_object_header
* - ibf_object_xxx (xxx is type)
*/
struct ibf_object_header {
unsigned int type: 5;
unsigned int special_const: 1;
unsigned int frozen: 1;
unsigned int internal: 1;
};
enum ibf_object_class_index {
IBF_OBJECT_CLASS_OBJECT,
IBF_OBJECT_CLASS_ARRAY,
IBF_OBJECT_CLASS_STANDARD_ERROR
};
struct ibf_object_string {
long encindex;
long len;
char ptr[1];
};
struct ibf_object_regexp {
long srcstr;
char option;
};
struct ibf_object_array {
long len;
long ary[1];
};
struct ibf_object_hash {
long len;
long keyval[1];
};
struct ibf_object_struct_range {
long class_index;
long len;
long beg;
long end;
int excl;
};
struct ibf_object_bignum {
ssize_t slen;
BDIGIT digits[1];
};
enum ibf_object_data_type {
IBF_OBJECT_DATA_ENCODING
};
struct ibf_object_complex_rational {
long a, b;
};
struct ibf_object_symbol {
long str;
};
#define IBF_OBJHEADER(offset) (struct ibf_object_header *)(load->buff + (offset))
#define IBF_OBJBODY(type, offset) (type *)(load->buff + sizeof(struct ibf_object_header) + (offset))
static void
ibf_dump_object_unsupported(struct ibf_dump *dump, VALUE obj)
{
rb_obj_info_dump(obj);
rb_bug("ibf_dump_object_unsupported: unsupported");
}
static VALUE
ibf_load_object_unsupported(const struct ibf_load *load, const struct ibf_object_header *header, ibf_offset_t offset)
{
rb_bug("unsupported");
return Qnil;
}
static void
ibf_dump_object_class(struct ibf_dump *dump, VALUE obj)
{
enum ibf_object_class_index cindex;
if (obj == rb_cObject) {
cindex = IBF_OBJECT_CLASS_OBJECT;
}
else if (obj == rb_cArray) {
cindex = IBF_OBJECT_CLASS_ARRAY;
}
else if (obj == rb_eStandardError) {
cindex = IBF_OBJECT_CLASS_STANDARD_ERROR;
}
else {
rb_obj_info_dump(obj);
rb_p(obj);
rb_bug("unsupported class");
}
ibf_dump_write(dump, &cindex, sizeof(cindex));
}
static VALUE
ibf_load_object_class(const struct ibf_load *load, const struct ibf_object_header *header, ibf_offset_t offset)
{
enum ibf_object_class_index *cindexp = IBF_OBJBODY(enum ibf_object_class_index, offset);
enum ibf_object_class_index cindex = *cindexp;
switch (cindex) {
case IBF_OBJECT_CLASS_OBJECT:
return rb_cObject;
case IBF_OBJECT_CLASS_ARRAY:
return rb_cArray;
case IBF_OBJECT_CLASS_STANDARD_ERROR:
return rb_eStandardError;
}
rb_bug("ibf_load_object_class: unknown class (%d)", (int)cindex);
}
static void
ibf_dump_object_float(struct ibf_dump *dump, VALUE obj)
{
double dbl = RFLOAT_VALUE(obj);
ibf_dump_write(dump, &dbl, sizeof(dbl));
}
static VALUE
ibf_load_object_float(const struct ibf_load *load, const struct ibf_object_header *header, ibf_offset_t offset)
{
double *dblp = IBF_OBJBODY(double, offset);
return DBL2NUM(*dblp);
}
static void
ibf_dump_object_string(struct ibf_dump *dump, VALUE obj)
{
long encindex = (long)rb_enc_get_index(obj);
long len = RSTRING_LEN(obj);
const char *ptr = RSTRING_PTR(obj);
if (encindex > RUBY_ENCINDEX_BUILTIN_MAX) {
rb_encoding *enc = rb_enc_from_index((int)encindex);
const char *enc_name = rb_enc_name(enc);
encindex = RUBY_ENCINDEX_BUILTIN_MAX + ibf_dump_object(dump, rb_str_new2(enc_name));
}
IBF_WV(encindex);
IBF_WV(len);
IBF_WP(ptr, char, len);
}
static VALUE
ibf_load_object_string(const struct ibf_load *load, const struct ibf_object_header *header, ibf_offset_t offset)
{
const struct ibf_object_string *string = IBF_OBJBODY(struct ibf_object_string, offset);
VALUE str = rb_str_new(string->ptr, string->len);
int encindex = (int)string->encindex;
if (encindex > RUBY_ENCINDEX_BUILTIN_MAX) {
VALUE enc_name_str = ibf_load_object(load, encindex - RUBY_ENCINDEX_BUILTIN_MAX);
encindex = rb_enc_find_index(RSTRING_PTR(enc_name_str));
}
rb_enc_associate_index(str, encindex);
if (header->internal) rb_obj_hide(str);
if (header->frozen) str = rb_fstring(str);
return str;
}
static void
ibf_dump_object_regexp(struct ibf_dump *dump, VALUE obj)
{
struct ibf_object_regexp regexp;
regexp.srcstr = RREGEXP_SRC(obj);
regexp.option = (char)rb_reg_options(obj);
regexp.srcstr = (long)ibf_dump_object(dump, regexp.srcstr);
IBF_WV(regexp);
}
static VALUE
ibf_load_object_regexp(const struct ibf_load *load, const struct ibf_object_header *header, ibf_offset_t offset)
{
const struct ibf_object_regexp *regexp = IBF_OBJBODY(struct ibf_object_regexp, offset);
VALUE srcstr = ibf_load_object(load, regexp->srcstr);
VALUE reg = rb_reg_compile(srcstr, (int)regexp->option, NULL, 0);
if (header->internal) rb_obj_hide(reg);
if (header->frozen) rb_obj_freeze(reg);
return reg;
}
static void
ibf_dump_object_array(struct ibf_dump *dump, VALUE obj)
{
long i, len = (int)RARRAY_LEN(obj);
IBF_WV(len);
for (i=0; i<len; i++) {
long index = (long)ibf_dump_object(dump, RARRAY_AREF(obj, i));
IBF_WV(index);
}
}
static VALUE
ibf_load_object_array(const struct ibf_load *load, const struct ibf_object_header *header, ibf_offset_t offset)
{
const struct ibf_object_array *array = IBF_OBJBODY(struct ibf_object_array, offset);
VALUE ary = rb_ary_new_capa(array->len);
int i;
for (i=0; i<array->len; i++) {
rb_ary_push(ary, ibf_load_object(load, array->ary[i]));
}
if (header->internal) rb_obj_hide(ary);
if (header->frozen) rb_obj_freeze(ary);
return ary;
}
static int
ibf_dump_object_hash_i(st_data_t key, st_data_t val, st_data_t ptr)
{
struct ibf_dump *dump = (struct ibf_dump *)ptr;
long key_index = (long)ibf_dump_object(dump, (VALUE)key);
long val_index = (long)ibf_dump_object(dump, (VALUE)val);
IBF_WV(key_index);
IBF_WV(val_index);
return ST_CONTINUE;
}
static void
ibf_dump_object_hash(struct ibf_dump *dump, VALUE obj)
{
long len = RHASH_SIZE(obj);
IBF_WV(len);
if (len > 0) st_foreach(RHASH(obj)->ntbl, ibf_dump_object_hash_i, (st_data_t)dump);
}
static VALUE
ibf_load_object_hash(const struct ibf_load *load, const struct ibf_object_header *header, ibf_offset_t offset)
{
const struct ibf_object_hash *hash = IBF_OBJBODY(struct ibf_object_hash, offset);
VALUE obj = rb_hash_new_with_size(hash->len);
int i;
for (i=0; i<hash->len; i++) {
VALUE key = ibf_load_object(load, hash->keyval[i*2 ]);
VALUE val = ibf_load_object(load, hash->keyval[i*2+1]);
rb_hash_aset(obj, key, val);
}
rb_hash_rehash(obj);
if (header->internal) rb_obj_hide(obj);
if (header->frozen) rb_obj_freeze(obj);
return obj;
}
static void
ibf_dump_object_struct(struct ibf_dump *dump, VALUE obj)
{
if (rb_obj_is_kind_of(obj, rb_cRange)) {
struct ibf_object_struct_range range;
VALUE beg, end;
range.len = 3;
range.class_index = 0;
rb_range_values(obj, &beg, &end, &range.excl);
range.beg = (long)ibf_dump_object(dump, beg);
range.end = (long)ibf_dump_object(dump, end);
IBF_WV(range);
}
else {
rb_bug("ibf_dump_object_struct: unsupported class");
}
}
static VALUE
ibf_load_object_struct(const struct ibf_load *load, const struct ibf_object_header *header, ibf_offset_t offset)
{
const struct ibf_object_struct_range *range = IBF_OBJBODY(struct ibf_object_struct_range, offset);
VALUE beg = ibf_load_object(load, range->beg);
VALUE end = ibf_load_object(load, range->end);
VALUE obj = rb_range_new(beg, end, range->excl);
if (header->internal) rb_obj_hide(obj);
if (header->frozen) rb_obj_freeze(obj);
return obj;
}
static void
ibf_dump_object_bignum(struct ibf_dump *dump, VALUE obj)
{
ssize_t len = BIGNUM_LEN(obj);
ssize_t slen = BIGNUM_SIGN(obj) > 0 ? len : len * -1;
BDIGIT *d = BIGNUM_DIGITS(obj);
IBF_WV(slen);
IBF_WP(d, BDIGIT, len);
}
static VALUE
ibf_load_object_bignum(const struct ibf_load *load, const struct ibf_object_header *header, ibf_offset_t offset)
{
const struct ibf_object_bignum *bignum = IBF_OBJBODY(struct ibf_object_bignum, offset);
int sign = bignum->slen > 0;
ssize_t len = sign > 0 ? bignum->slen : -1 * bignum->slen;
VALUE obj = rb_integer_unpack(bignum->digits, len * 2, 2, 0,
INTEGER_PACK_LITTLE_ENDIAN | (sign == 0 ? INTEGER_PACK_NEGATIVE : 0));
if (header->internal) rb_obj_hide(obj);
if (header->frozen) rb_obj_freeze(obj);
return obj;
}
static void
ibf_dump_object_data(struct ibf_dump *dump, VALUE obj)
{
if (rb_data_is_encoding(obj)) {
rb_encoding *enc = rb_to_encoding(obj);
const char *name = rb_enc_name(enc);
enum ibf_object_data_type type = IBF_OBJECT_DATA_ENCODING;
long len = strlen(name) + 1;
IBF_WV(type);
IBF_WV(len);
IBF_WP(name, char, strlen(name) + 1);
}
else {
ibf_dump_object_unsupported(dump, obj);
}
}
static VALUE
ibf_load_object_data(const struct ibf_load *load, const struct ibf_object_header *header, ibf_offset_t offset)
{
const enum ibf_object_data_type *typep = IBF_OBJBODY(enum ibf_object_data_type, offset);
/* const long *lenp = IBF_OBJBODY(long, offset + sizeof(enum ibf_object_data_type)); */
const char *data = IBF_OBJBODY(char, offset + sizeof(enum ibf_object_data_type) + sizeof(long));
switch (*typep) {
case IBF_OBJECT_DATA_ENCODING:
{
VALUE encobj = rb_enc_from_encoding(rb_enc_find(data));
return encobj;
}
}
return ibf_load_object_unsupported(load, header, offset);
}
static void
ibf_dump_object_complex_rational(struct ibf_dump *dump, VALUE obj)
{
long real = (long)ibf_dump_object(dump, RCOMPLEX(obj)->real);
long imag = (long)ibf_dump_object(dump, RCOMPLEX(obj)->imag);
IBF_WV(real);
IBF_WV(imag);
}
static VALUE
ibf_load_object_complex_rational(const struct ibf_load *load, const struct ibf_object_header *header, ibf_offset_t offset)
{
const struct ibf_object_complex_rational *nums = IBF_OBJBODY(struct ibf_object_complex_rational, offset);
VALUE a = ibf_load_object(load, nums->a);
VALUE b = ibf_load_object(load, nums->b);
VALUE obj = header->type == T_COMPLEX ?
rb_complex_new(a, b) : rb_rational_new(a, b);
if (header->internal) rb_obj_hide(obj);
if (header->frozen) rb_obj_freeze(obj);
return obj;
}
static void
ibf_dump_object_symbol(struct ibf_dump *dump, VALUE obj)
{
VALUE str = rb_sym2str(obj);
long str_index = (long)ibf_dump_object(dump, str);
IBF_WV(str_index);
}
static VALUE
ibf_load_object_symbol(const struct ibf_load *load, const struct ibf_object_header *header, ibf_offset_t offset)
{
/* const struct ibf_object_header *header = IBF_OBJHEADER(offset); */
const struct ibf_object_symbol *symbol = IBF_OBJBODY(struct ibf_object_symbol, offset);
VALUE str = ibf_load_object(load, symbol->str);
ID id = rb_intern_str(str);
return ID2SYM(id);
}
typedef void (*ibf_dump_object_function)(struct ibf_dump *dump, VALUE obj);
static ibf_dump_object_function dump_object_functions[RUBY_T_MASK+1] = {
ibf_dump_object_unsupported, /* T_NONE */
ibf_dump_object_unsupported, /* T_OBJECT */
ibf_dump_object_class, /* T_CLASS */
ibf_dump_object_unsupported, /* T_MODULE */
ibf_dump_object_float, /* T_FLOAT */
ibf_dump_object_string, /* T_STRING */
ibf_dump_object_regexp, /* T_REGEXP */
ibf_dump_object_array, /* T_ARRAY */
ibf_dump_object_hash, /* T_HASH */
ibf_dump_object_struct, /* T_STRUCT */
ibf_dump_object_bignum, /* T_BIGNUM */
ibf_dump_object_unsupported, /* T_FILE */
ibf_dump_object_data, /* T_DATA */
ibf_dump_object_unsupported, /* T_MATCH */
ibf_dump_object_complex_rational, /* T_COMPLEX */
ibf_dump_object_complex_rational, /* T_RATIONAL */
ibf_dump_object_unsupported, /* 0x10 */
ibf_dump_object_unsupported, /* 0x11 T_NIL */
ibf_dump_object_unsupported, /* 0x12 T_TRUE */
ibf_dump_object_unsupported, /* 0x13 T_FALSE */
ibf_dump_object_symbol, /* 0x14 T_SYMBOL */
ibf_dump_object_unsupported, /* T_FIXNUM */
ibf_dump_object_unsupported, /* T_UNDEF */
ibf_dump_object_unsupported, /* 0x17 */
ibf_dump_object_unsupported, /* 0x18 */
ibf_dump_object_unsupported, /* 0x19 */
ibf_dump_object_unsupported, /* T_IMEMO 0x1a */
ibf_dump_object_unsupported, /* T_NODE 0x1b */
ibf_dump_object_unsupported, /* T_ICLASS 0x1c */
ibf_dump_object_unsupported, /* T_ZOMBIE 0x1d */
ibf_dump_object_unsupported, /* 0x1e */
ibf_dump_object_unsupported /* 0x1f */
};
static ibf_offset_t
lbf_dump_object_object(struct ibf_dump *dump, VALUE obj)
{
struct ibf_object_header obj_header;
ibf_offset_t current_offset = ibf_dump_pos(dump);
obj_header.type = TYPE(obj);
if (SPECIAL_CONST_P(obj)) {
if (RB_TYPE_P(obj, T_SYMBOL) ||
RB_TYPE_P(obj, T_FLOAT)) {
obj_header.internal = FALSE;
goto dump_object;
}
obj_header.special_const = TRUE;
obj_header.frozen = TRUE;
obj_header.internal = TRUE;
IBF_WV(obj_header);
IBF_WV(obj);
}
else {
obj_header.internal = (RBASIC_CLASS(obj) == 0) ? TRUE : FALSE;
dump_object:
obj_header.special_const = FALSE;
obj_header.frozen = FL_TEST(obj, FL_FREEZE) ? TRUE : FALSE;
IBF_WV(obj_header);
(*dump_object_functions[obj_header.type])(dump, obj);
}
return current_offset;
}
typedef VALUE (*ibf_load_object_function)(const struct ibf_load *load, const struct ibf_object_header *header, ibf_offset_t);
static ibf_load_object_function load_object_functions[RUBY_T_MASK+1] = {
ibf_load_object_unsupported, /* T_NONE */
ibf_load_object_unsupported, /* T_OBJECT */
ibf_load_object_class, /* T_CLASS */
ibf_load_object_unsupported, /* T_MODULE */
ibf_load_object_float, /* T_FLOAT */
ibf_load_object_string, /* T_STRING */
ibf_load_object_regexp, /* T_REGEXP */
ibf_load_object_array, /* T_ARRAY */
ibf_load_object_hash, /* T_HASH */
ibf_load_object_struct, /* T_STRUCT */
ibf_load_object_bignum, /* T_BIGNUM */
ibf_load_object_unsupported, /* T_FILE */
ibf_load_object_data, /* T_DATA */
ibf_load_object_unsupported, /* T_MATCH */
ibf_load_object_complex_rational, /* T_COMPLEX */
ibf_load_object_complex_rational, /* T_RATIONAL */
ibf_load_object_unsupported, /* 0x10 */
ibf_load_object_unsupported, /* T_NIL */
ibf_load_object_unsupported, /* T_TRUE */
ibf_load_object_unsupported, /* T_FALSE */
ibf_load_object_symbol,
ibf_load_object_unsupported, /* T_FIXNUM */
ibf_load_object_unsupported, /* T_UNDEF */
ibf_load_object_unsupported, /* 0x17 */
ibf_load_object_unsupported, /* 0x18 */
ibf_load_object_unsupported, /* 0x19 */
ibf_load_object_unsupported, /* T_IMEMO 0x1a */
ibf_load_object_unsupported, /* T_NODE 0x1b */
ibf_load_object_unsupported, /* T_ICLASS 0x1c */
ibf_load_object_unsupported, /* T_ZOMBIE 0x1d */
ibf_load_object_unsupported, /* 0x1e */
ibf_load_object_unsupported /* 0x1f */
};
static VALUE
ibf_load_object(const struct ibf_load *load, VALUE object_index)
{
if (object_index == 0) {
return Qnil;
}
else if (object_index >= load->header->object_list_size) {
rb_raise(rb_eIndexError, "object index out of range: %"PRIdVALUE, object_index);
}
else {
VALUE obj = rb_ary_entry(load->obj_list, (long)object_index);
if (obj == Qnil) { /* TODO: avoid multiple Qnil load */
ibf_offset_t *offsets = (ibf_offset_t *)(load->header->object_list_offset + load->buff);
ibf_offset_t offset = offsets[object_index];
const struct ibf_object_header *header = IBF_OBJHEADER(offset);
if (header->special_const) {
VALUE *vp = IBF_OBJBODY(VALUE, offset);
obj = *vp;
}
else {
obj = (*load_object_functions[header->type])(load, header, offset);
}
rb_ary_store(load->obj_list, (long)object_index, obj);
}
iseq_add_mark_object(load->iseq, obj);
return obj;
}
}
static void
ibf_dump_object_list(struct ibf_dump *dump, struct ibf_header *header)
{
VALUE list = rb_ary_tmp_new(RARRAY_LEN(dump->obj_list));
int i, size;
for (i=0; i<RARRAY_LEN(dump->obj_list); i++) {
VALUE obj = RARRAY_AREF(dump->obj_list, i);
ibf_offset_t offset = lbf_dump_object_object(dump, obj);
rb_ary_push(list, UINT2NUM(offset));
}
size = i;
header->object_list_offset = ibf_dump_pos(dump);
for (i=0; i<size; i++) {
ibf_offset_t offset = NUM2UINT(RARRAY_AREF(list, i));
IBF_WV(offset);
}
header->object_list_size = size;
}
static void
ibf_dump_mark(void *ptr)
{
struct ibf_dump *dump = (struct ibf_dump *)ptr;
rb_gc_mark(dump->str);
rb_gc_mark(dump->iseq_list);
rb_gc_mark(dump->obj_list);
}
static void
ibf_dump_free(void *ptr)
{
struct ibf_dump *dump = (struct ibf_dump *)ptr;
if (dump->iseq_table) {
st_free_table(dump->iseq_table);
dump->iseq_table = 0;
}
if (dump->id_table) {
st_free_table(dump->id_table);
dump->id_table = 0;
}
ruby_xfree(dump);
}
static size_t
ibf_dump_memsize(const void *ptr)
{
struct ibf_dump *dump = (struct ibf_dump *)ptr;
size_t size = sizeof(*dump);
if (dump->iseq_table) size += st_memsize(dump->iseq_table);
if (dump->id_table) size += st_memsize(dump->id_table);
return size;
}
static const rb_data_type_t ibf_dump_type = {
"ibf_dump",
{ibf_dump_mark, ibf_dump_free, ibf_dump_memsize,},
0, 0, RUBY_TYPED_WB_PROTECTED | RUBY_TYPED_FREE_IMMEDIATELY
};
static void
ibf_dump_setup(struct ibf_dump *dump, VALUE dumper_obj)
{
RB_OBJ_WRITE(dumper_obj, &dump->str, rb_str_new(0, 0));
RB_OBJ_WRITE(dumper_obj, &dump->iseq_list, rb_ary_tmp_new(0));
RB_OBJ_WRITE(dumper_obj, &dump->obj_list, rb_ary_tmp_new(1));
rb_ary_push(dump->obj_list, Qnil); /* 0th is nil */
dump->iseq_table = st_init_numtable(); /* need free */
dump->id_table = st_init_numtable(); /* need free */
ibf_table_index(dump->id_table, 0); /* id_index:0 is 0 */
}
VALUE
iseq_ibf_dump(const rb_iseq_t *iseq, VALUE opt)
{
struct ibf_dump *dump;
struct ibf_header header = {{0}};
VALUE dump_obj;
VALUE str;
if (iseq->body->parent_iseq != NULL ||
iseq->body->local_iseq != iseq) {
rb_raise(rb_eRuntimeError, "should be top of iseq");
}
if (RTEST(ISEQ_COVERAGE(iseq))) {
rb_raise(rb_eRuntimeError, "should not compile with coverage");
}
dump_obj = TypedData_Make_Struct(0, struct ibf_dump, &ibf_dump_type, dump);
ibf_dump_setup(dump, dump_obj);
ibf_dump_write(dump, &header, sizeof(header));
ibf_dump_write(dump, RUBY_PLATFORM, strlen(RUBY_PLATFORM) + 1);
ibf_dump_iseq(dump, iseq);
header.magic[0] = 'Y'; /* YARB */
header.magic[1] = 'A';
header.magic[2] = 'R';
header.magic[3] = 'B';
header.major_version = ISEQ_MAJOR_VERSION;
header.minor_version = ISEQ_MINOR_VERSION;
ibf_dump_iseq_list(dump, &header);
ibf_dump_id_list(dump, &header);
ibf_dump_object_list(dump, &header);
header.size = ibf_dump_pos(dump);
if (RTEST(opt)) {
VALUE opt_str = opt;
const char *ptr = StringValuePtr(opt_str);
header.extra_size = RSTRING_LENINT(opt_str);
ibf_dump_write(dump, ptr, header.extra_size);
}
else {
header.extra_size = 0;
}
ibf_dump_overwrite(dump, &header, sizeof(header), 0);
str = dump->str;
ibf_dump_free(dump);
DATA_PTR(dump_obj) = NULL;
RB_GC_GUARD(dump_obj);
return str;
}
static const ibf_offset_t *
ibf_iseq_list(const struct ibf_load *load)
{
return (ibf_offset_t *)(load->buff + load->header->iseq_list_offset);
}
void
ibf_load_iseq_complete(rb_iseq_t *iseq)
{
struct ibf_load *load = RTYPEDDATA_DATA(iseq->aux.loader.obj);
rb_iseq_t *prev_src_iseq = load->iseq;
load->iseq = iseq;
ibf_load_iseq_each(load, iseq, ibf_iseq_list(load)[iseq->aux.loader.index]);
ISEQ_COMPILE_DATA_CLEAR(iseq);
FL_UNSET(iseq, ISEQ_NOT_LOADED_YET);
load->iseq = prev_src_iseq;
}
#if USE_LAZY_LOAD
const rb_iseq_t *
rb_iseq_complete(const rb_iseq_t *iseq)
{
ibf_load_iseq_complete((rb_iseq_t *)iseq);
return iseq;
}
#endif
static rb_iseq_t *
ibf_load_iseq(const struct ibf_load *load, const rb_iseq_t *index_iseq)
{
int iseq_index = (int)(VALUE)index_iseq;
if (iseq_index == -1) {
return NULL;
}
else {
VALUE iseqv = rb_ary_entry(load->iseq_list, iseq_index);
if (iseqv != Qnil) {
return (rb_iseq_t *)iseqv;
}
else {
rb_iseq_t *iseq = iseq_imemo_alloc();
FL_SET(iseq, ISEQ_NOT_LOADED_YET);
iseq->aux.loader.obj = load->loader_obj;
iseq->aux.loader.index = iseq_index;
rb_ary_store(load->iseq_list, iseq_index, (VALUE)iseq);
#if !USE_LAZY_LOAD
ibf_load_iseq_complete(iseq);
#endif /* !USE_LAZY_LOAD */
if (load->iseq) {
iseq_add_mark_object(load->iseq, (VALUE)iseq);
}
return iseq;
}
}
}
static void
ibf_load_setup(struct ibf_load *load, VALUE loader_obj, VALUE str)
{
rb_check_safe_obj(str);
if (RSTRING_LENINT(str) < (int)sizeof(struct ibf_header)) {
rb_raise(rb_eRuntimeError, "broken binary format");
}
RB_OBJ_WRITE(loader_obj, &load->str, str);
load->loader_obj = loader_obj;
load->buff = StringValuePtr(str);
load->header = (struct ibf_header *)load->buff;
RB_OBJ_WRITE(loader_obj, &load->iseq_list, rb_ary_tmp_new(0));
RB_OBJ_WRITE(loader_obj, &load->obj_list, rb_ary_tmp_new(0));
load->id_list = ZALLOC_N(ID, load->header->id_list_size);
load->iseq = NULL;
if (RSTRING_LENINT(str) < (int)load->header->size) {
rb_raise(rb_eRuntimeError, "broken binary format");
}
if (strncmp(load->header->magic, "YARB", 4) != 0) {
rb_raise(rb_eRuntimeError, "unknown binary format");
}
if (load->header->major_version != ISEQ_MAJOR_VERSION ||
load->header->minor_version != ISEQ_MINOR_VERSION) {
rb_raise(rb_eRuntimeError, "unmatched version file (%u.%u for %u.%u)",
load->header->major_version, load->header->minor_version, ISEQ_MAJOR_VERSION, ISEQ_MINOR_VERSION);
}
if (strcmp(load->buff + sizeof(struct ibf_header), RUBY_PLATFORM) != 0) {
rb_raise(rb_eRuntimeError, "unmatched platform");
}
}
static void
ibf_loader_mark(void *ptr)
{
struct ibf_load *load = (struct ibf_load *)ptr;
rb_gc_mark(load->str);
rb_gc_mark(load->iseq_list);
rb_gc_mark(load->obj_list);
}
static void
ibf_loader_free(void *ptr)
{
struct ibf_load *load = (struct ibf_load *)ptr;
ruby_xfree(load->id_list);
ruby_xfree(load);
}
static size_t
ibf_loader_memsize(const void *ptr)
{
struct ibf_load *load = (struct ibf_load *)ptr;
return sizeof(struct ibf_load) + load->header->id_list_size * sizeof(ID);
}
static const rb_data_type_t ibf_load_type = {
"ibf_loader",
{ibf_loader_mark, ibf_loader_free, ibf_loader_memsize,},
0, 0, RUBY_TYPED_WB_PROTECTED | RUBY_TYPED_FREE_IMMEDIATELY
};
const rb_iseq_t *
iseq_ibf_load(VALUE str)
{
struct ibf_load *load;
const rb_iseq_t *iseq;
VALUE loader_obj = TypedData_Make_Struct(0, struct ibf_load, &ibf_load_type, load);
ibf_load_setup(load, loader_obj, str);
iseq = ibf_load_iseq(load, 0);
RB_GC_GUARD(loader_obj);
return iseq;
}
VALUE
iseq_ibf_load_extra_data(VALUE str)
{
struct ibf_load *load;
VALUE loader_obj = TypedData_Make_Struct(0, struct ibf_load, &ibf_load_type, load);
VALUE extra_str;
ibf_load_setup(load, loader_obj, str);
extra_str = rb_str_new(load->buff + load->header->size, load->header->extra_size);
RB_GC_GUARD(loader_obj);
return extra_str;
}
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