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ruby--ruby/compile.c
nobu 7190c04417 compile.c: store IDs as Symbols 
* compile.c (iseq_set_arguments): store local variable IDs in
  temporary list as Symbols.  previously these are stored as
  Fixnums to prevent from GC, but IDs of dynamic symbols can
  exceed Fixnum range and cause RangeError at inverting from
  Fixnum.  [ruby-dev:48564] [Bug #10266]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47648 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2014-09-20 01:23:02 +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 "ruby/ruby.h"
#include "internal.h"
#include <math.h>
#define USE_INSN_STACK_INCREASE 1
#include "vm_core.h"
#include "iseq.h"
#include "insns.inc"
#include "insns_info.inc"
#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_NONE,
ISEQ_ELEMENT_LABEL,
ISEQ_ELEMENT_INSN,
ISEQ_ELEMENT_ADJUST
} 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 struct iseq_label_data {
LINK_ELEMENT link;
int label_no;
int position;
int sc_state;
int set;
int sp;
} LABEL;
typedef struct iseq_insn_data {
LINK_ELEMENT link;
enum ruby_vminsn_type insn_id;
unsigned int line_no;
int operand_size;
int sc_state;
VALUE *operands;
} INSN;
typedef struct iseq_adjust_data {
LINK_ELEMENT link;
LABEL *label;
int line_no;
} ADJUST;
struct ensure_range {
LABEL *begin;
LABEL *end;
struct ensure_range *next;
};
struct iseq_compile_data_ensure_node_stack {
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->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, "", (NODE *)(node)), gl_node_level)), \
gl_node_level++)
#define debug_node_end() gl_node_level --
#else
static inline ID
r_id(ID id)
{
return id;
}
static inline VALUE
r_value(VALUE value)
{
return value;
}
#define debugi(header, id) r_id(id)
#define debugp(header, value) r_value(value)
#define debugp_verbose(header, value) r_value(value)
#define debugp_verbose_node(header, value) r_value(value)
#define debugp_param(header, value) r_value(value)
#define debug_node_start(node) ((void)0)
#define debug_node_end() ((void)0)
#endif
#if CPDEBUG > 1 || CPDEBUG < 0
#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
/* create new label */
#define NEW_LABEL(l) new_label_body(iseq, (l))
#define iseq_path(iseq) \
(((rb_iseq_t*)DATA_PTR(iseq))->location.path)
#define iseq_absolute_path(iseq) \
(((rb_iseq_t*)DATA_PTR(iseq))->location.absolute_path)
#define NEW_ISEQVAL(node, name, type, line_no) \
new_child_iseq(iseq, (node), rb_fstring(name), 0, (type), (line_no))
#define NEW_CHILD_ISEQVAL(node, name, type, line_no) \
new_child_iseq(iseq, (node), rb_fstring(name), iseq->self, (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))
/* 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)))
/* add an instruction with label operand (alias of ADD_INSN1) */
#define ADD_INSNL(seq, line, insn, label) ADD_INSN1(seq, line, insn, 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), (VALUE)Qfalse, (VALUE)INT2FIX(0))
#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), (VALUE)Qfalse, (VALUE)INT2FIX(VM_CALL_FCALL))
#define ADD_CALL_WITH_BLOCK(seq, line, id, argc, block) \
ADD_SEND_R((seq), (line), (id), (argc), (block), (VALUE)INT2FIX(VM_CALL_FCALL))
#define ADD_SEND_R(seq, line, id, argc, block, flag) \
ADD_ELEM((seq), (LINK_ELEMENT *) \
new_insn_send(iseq, (line), \
(id), (VALUE)(argc), (VALUE)(block), (VALUE)(flag)))
#define ADD_TRACE(seq, line, event) \
do { \
if ((event) == RUBY_EVENT_LINE && iseq->coverage && \
(line) != iseq->compile_data->last_coverable_line) { \
RARRAY_ASET(iseq->coverage, (line) - 1, INT2FIX(0)); \
iseq->compile_data->last_coverable_line = (line); \
ADD_INSN1((seq), (line), trace, INT2FIX(RUBY_EVENT_COVERAGE)); \
} \
if (iseq->compile_data->option->trace_instruction) { \
ADD_INSN1((seq), (line), trace, INT2FIX(event)); \
} \
} while (0)
/* 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 ADD_CATCH_ENTRY(type, ls, le, iseqv, lc) \
(rb_ary_push(iseq->compile_data->catch_table_ary, \
rb_ary_new3(5, (type), \
(VALUE)(ls) | 1, (VALUE)(le) | 1, \
(VALUE)(iseqv), (VALUE)(lc) | 1)))
/* 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_POPED(anchor, desc, node) \
(debug_compile("== " desc "\n", \
iseq_compile_each(iseq, (anchor), (node), 1)))
/* compile node, which is popped when 'poped' is true */
#define COMPILE_(anchor, desc, node, poped) \
(debug_compile("== " desc "\n", \
iseq_compile_each(iseq, (anchor), (node), (poped))))
#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)
/* error */
#define COMPILE_ERROR(strs) \
{ \
VALUE tmp = GET_THREAD()->errinfo; \
if (compile_debug) rb_compile_bug strs; \
GET_THREAD()->errinfo = iseq->compile_data->err_info; \
rb_compile_error strs; \
RB_OBJ_WRITE(iseq->self, &iseq->compile_data->err_info, GET_THREAD()->errinfo); \
GET_THREAD()->errinfo = tmp; \
ret = 0; \
break; \
}
#define ERROR_ARGS ruby_sourcefile, nd_line(node),
#define COMPILE_OK 1
#define COMPILE_NG 0
/* leave name uninitialized so that compiler warn if INIT_ANCHOR is
* missing */
#define DECL_ANCHOR(name) \
LINK_ANCHOR *name, name##_body__ = {{0,},}
#define INIT_ANCHOR(name) \
(name##_body__.last = &name##_body__.anchor, name = &name##_body__)
#define hide_obj(obj) do {OBJ_FREEZE(obj); RBASIC_CLEAR_CLASS(obj);} while (0)
#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->node_level
#if 0
static void debug_list(ISEQ_ARG_DECLARE LINK_ANCHOR *anchor);
#endif
#endif
static void dump_disasm_list(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 int iseq_compile_each(rb_iseq_t *iseq, LINK_ANCHOR *anchor, NODE * n, int);
static int iseq_setup(rb_iseq_t *iseq, LINK_ANCHOR *anchor);
static int iseq_optimize(rb_iseq_t *iseq, LINK_ANCHOR *anchor);
static int iseq_insns_unification(rb_iseq_t *iseq, LINK_ANCHOR *anchor);
static int iseq_set_local_table(rb_iseq_t *iseq, ID *tbl);
static int iseq_set_exception_local_table(rb_iseq_t *iseq);
static int iseq_set_arguments(rb_iseq_t *iseq, LINK_ANCHOR *anchor, NODE * node);
static int iseq_set_sequence_stackcaching(rb_iseq_t *iseq, LINK_ANCHOR *anchor);
static int iseq_set_sequence(rb_iseq_t *iseq, LINK_ANCHOR *anchor);
static int iseq_set_exception_table(rb_iseq_t *iseq);
static int iseq_set_optargs_table(rb_iseq_t *iseq);
/*
* To make Array to LinkedList, use link_anchor
*/
static void
verify_list(ISEQ_ARG_DECLARE const char *info, LINK_ANCHOR *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 *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 *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) ADD_ELEM(iseq, (anchor), (before), (elem))
#endif
static int
iseq_add_mark_object(rb_iseq_t *iseq, VALUE v)
{
if (!SPECIAL_CONST_P(v)) {
rb_iseq_add_mark_object(iseq, v);
}
return COMPILE_OK;
}
#define ruby_sourcefile RSTRING_PTR(iseq->location.path)
static int
iseq_add_mark_object_compile_time(rb_iseq_t *iseq, VALUE v)
{
if (!SPECIAL_CONST_P(v)) {
rb_ary_push(iseq->compile_data->mark_ary, v);
}
return COMPILE_OK;
}
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 {
int ret;
COMPILE_ERROR((ruby_sourcefile, lobj->position,
"%s: undefined label", rb_id2name((ID)name)));
if (ret) break;
} 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);
if (!NIL_P(iseq->compile_data->err_info)) {
rb_exc_raise(iseq->compile_data->err_info);
}
}
VALUE
rb_iseq_compile_node(VALUE self, NODE *node)
{
DECL_ANCHOR(ret);
rb_iseq_t *iseq;
INIT_ANCHOR(ret);
GetISeqPtr(self, iseq);
if (node == 0) {
COMPILE(ret, "nil", node);
iseq_set_local_table(iseq, 0);
}
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->type) {
case ISEQ_TYPE_BLOCK:
{
LABEL *start = iseq->compile_data->start_label = NEW_LABEL(0);
LABEL *end = iseq->compile_data->end_label = NEW_LABEL(0);
ADD_TRACE(ret, FIX2INT(iseq->location.first_lineno), RUBY_EVENT_B_CALL);
ADD_LABEL(ret, start);
COMPILE(ret, "block body", node->nd_body);
ADD_LABEL(ret, end);
ADD_TRACE(ret, nd_line(node), RUBY_EVENT_B_RETURN);
/* wide range catch handler must put at last */
ADD_CATCH_ENTRY(CATCH_TYPE_REDO, start, end, 0, start);
ADD_CATCH_ENTRY(CATCH_TYPE_NEXT, start, end, 0, end);
break;
}
case ISEQ_TYPE_CLASS:
{
ADD_TRACE(ret, FIX2INT(iseq->location.first_lineno), RUBY_EVENT_CLASS);
COMPILE(ret, "scoped node", node->nd_body);
ADD_TRACE(ret, nd_line(node), RUBY_EVENT_END);
break;
}
case ISEQ_TYPE_METHOD:
{
ADD_TRACE(ret, FIX2INT(iseq->location.first_lineno), RUBY_EVENT_CALL);
COMPILE(ret, "scoped node", node->nd_body);
ADD_TRACE(ret, nd_line(node), RUBY_EVENT_RETURN);
break;
}
default: {
COMPILE(ret, "scoped node", node->nd_body);
break;
}
}
}
else if (nd_type(node) == NODE_IFUNC) {
/* user callback */
(*node->nd_cfnc)(iseq, ret, node->nd_tval);
}
else {
switch (iseq->type) {
case ISEQ_TYPE_METHOD:
case ISEQ_TYPE_CLASS:
case ISEQ_TYPE_BLOCK:
case ISEQ_TYPE_EVAL:
case ISEQ_TYPE_MAIN:
case ISEQ_TYPE_TOP:
rb_compile_error(ERROR_ARGS "compile/should not be reached: %s:%d",
__FILE__, __LINE__);
break;
case ISEQ_TYPE_RESCUE:
iseq_set_exception_local_table(iseq);
COMPILE(ret, "rescue", node);
break;
case ISEQ_TYPE_ENSURE:
iseq_set_exception_local_table(iseq);
COMPILE_POPED(ret, "ensure", node);
break;
case ISEQ_TYPE_DEFINED_GUARD:
iseq_set_local_table(iseq, 0);
COMPILE(ret, "defined guard", node);
break;
default:
rb_bug("unknown scope");
}
}
if (iseq->type == ISEQ_TYPE_RESCUE || iseq->type == ISEQ_TYPE_ENSURE) {
ADD_INSN2(ret, 0, getlocal, INT2FIX(2), INT2FIX(0));
ADD_INSN1(ret, 0, throw, INT2FIX(0) /* continue throw */ );
}
else {
ADD_INSN(ret, iseq->compile_data->last_line, leave);
}
#if SUPPORT_JOKE
if (iseq->compile_data->labels_table) {
validate_labels(iseq, iseq->compile_data->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;
for (i = 0; i < iseq->iseq_size; /* */ ) {
int insn = (int)iseq->iseq_encoded[i];
int len = insn_len(insn);
iseq->iseq_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(rb_iseq_t *iseq) /* cold path */
{
if (iseq->iseq) return iseq->iseq;
iseq->iseq = ALLOC_N(VALUE, iseq->iseq_size);
MEMCPY(iseq->iseq, iseq->iseq_encoded, VALUE, iseq->iseq_size);
#if OPT_DIRECT_THREADED_CODE || OPT_CALL_THREADED_CODE
{
unsigned int i;
for (i = 0; i < iseq->iseq_size; /* */ ) {
const void *addr = (const void *)iseq->iseq[i];
const int insn = rb_vm_insn_addr2insn(addr);
iseq->iseq[i] = insn;
i += insn_len(insn);
}
}
#endif
return iseq->iseq;
}
/*********************************************/
/* definition of data structure for compiler */
/*********************************************/
static void *
compile_data_alloc(rb_iseq_t *iseq, size_t size)
{
void *ptr = 0;
struct iseq_compile_data_storage *storage =
iseq->compile_data->storage_current;
if (size >= INT_MAX) rb_memerror();
if (storage->pos + size > storage->size) {
unsigned int alloc_size = storage->size;
while (alloc_size < size) {
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->storage_current = storage->next;
storage->next = 0;
storage->pos = 0;
storage->size = alloc_size;
}
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));
}
/*
* elem1, elemX => elem1, elem2, elemX
*/
static void
INSERT_ELEM_NEXT(LINK_ELEMENT *elem1, LINK_ELEMENT *elem2)
{
elem2->next = elem1->next;
elem2->prev = elem1;
elem1->next = elem2;
if (elem2->next) {
elem2->next->prev = elem2;
}
}
#if 0 /* unused */
/*
* elemX, elem1 => elemX, elem2, elem1
*/
static void
INSERT_ELEM_PREV(LINK_ELEMENT *elem1, LINK_ELEMENT *elem2)
{
elem2->prev = elem1->prev;
elem2->next = elem1;
elem1->prev = elem2;
if (elem2->prev) {
elem2->prev->next = elem2;
}
}
#endif
/*
* elemX, elem1, elemY => elemX, elem2, elemY
*/
static void
REPLACE_ELEM(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
REMOVE_ELEM(LINK_ELEMENT *elem)
{
elem->prev->next = elem->next;
if (elem->next) {
elem->next->prev = elem->prev;
}
}
static LINK_ELEMENT *
FIRST_ELEMENT(LINK_ANCHOR *anchor)
{
return anchor->anchor.next;
}
#if 0 /* unused */
static LINK_ELEMENT *
LAST_ELEMENT(LINK_ANCHOR *anchor)
{
return anchor->last;
}
#endif
static LINK_ELEMENT *
POP_ELEMENT(ISEQ_ARG_DECLARE LINK_ANCHOR *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
#if 0 /* unused */
static LINK_ELEMENT *
SHIFT_ELEMENT(LINK_ANCHOR *anchor)
{
LINK_ELEMENT *elem = anchor->anchor.next;
if (elem) {
anchor->anchor.next = elem->next;
}
return elem;
}
#endif
#if 0 /* unused */
static int
LIST_SIZE(LINK_ANCHOR *anchor)
{
LINK_ELEMENT *elem = anchor->anchor.next;
int size = 0;
while (elem) {
size += 1;
elem = elem->next;
}
return size;
}
#endif
static int
LIST_SIZE_ZERO(LINK_ANCHOR *anchor)
{
if (anchor->anchor.next == 0) {
return 1;
}
else {
return 0;
}
}
/*
* 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 *anc1, LINK_ANCHOR *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 *anc1, LINK_ANCHOR *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 0 /* unused */
/*
* anc1: e1, e2, e3
* anc2: e4, e5
*#=>
* anc1: e4, e5
* anc2: e1, e2, e3
*/
static void
SWAP_LIST(ISEQ_ARG_DECLARE LINK_ANCHOR *anc1, LINK_ANCHOR *anc2)
{
LINK_ANCHOR tmp = *anc2;
/* it has bug */
*anc2 = *anc1;
*anc1 = tmp;
verify_list("swap1", anc1);
verify_list("swap2", anc2);
}
#if CPDEBUG < 0
#define SWAP_LIST(anc1, anc2) SWAP_LIST(iseq, (anc1), (anc2))
#endif
static LINK_ANCHOR *
REVERSE_LIST(ISEQ_ARG_DECLARE LINK_ANCHOR *anc)
{
LINK_ELEMENT *first, *last, *elem, *e;
first = &anc->anchor;
elem = first->next;
last = anc->last;
if (elem != 0) {
anc->anchor.next = last;
anc->last = elem;
}
else {
/* null list */
return anc;
}
while (elem) {
e = elem->next;
elem->next = elem->prev;
elem->prev = e;
elem = e;
}
first->next = last;
last->prev = first;
anc->last->next = 0;
verify_list("reverse", anc);
return anc;
}
#if CPDEBUG < 0
#define REVERSE_LIST(anc) REVERSE_LIST(iseq, (anc))
#endif
#endif
#if CPDEBUG && 0
static void
debug_list(ISEQ_ARG_DECLARE LINK_ANCHOR *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
#endif
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->label_no++;
labelobj->sc_state = 0;
labelobj->sp = -1;
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;
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->line_no = line_no;
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 rb_call_info_t *
new_callinfo(rb_iseq_t *iseq, ID mid, int argc, VALUE block, unsigned int flag)
{
rb_call_info_t *ci = (rb_call_info_t *)compile_data_alloc(iseq, sizeof(rb_call_info_t));
ci->mid = mid;
ci->flag = flag;
ci->orig_argc = argc;
ci->argc = argc;
if (block) {
GetISeqPtr(block, ci->blockiseq);
}
else {
ci->blockiseq = 0;
if (!(ci->flag & (VM_CALL_ARGS_SPLAT | VM_CALL_ARGS_BLOCKARG))) {
ci->flag |= VM_CALL_ARGS_SKIP_SETUP;
}
}
ci->method_state = 0;
ci->class_serial = 0;
ci->blockptr = 0;
ci->recv = Qundef;
ci->call = 0; /* TODO: should set default function? */
ci->aux.index = iseq->callinfo_size++;
return ci;
}
static INSN *
new_insn_send(rb_iseq_t *iseq, int line_no, ID id, VALUE argc, VALUE block, VALUE flag)
{
VALUE *operands = (VALUE *)compile_data_alloc(iseq, sizeof(VALUE) * 1);
operands[0] = (VALUE)new_callinfo(iseq, id, FIX2INT(argc), block, FIX2INT(flag));
return new_insn_core(iseq, line_no, BIN(send), 1, operands);
}
static VALUE
new_child_iseq(rb_iseq_t *iseq, NODE *node,
VALUE name, VALUE parent, enum iseq_type type, int line_no)
{
VALUE ret;
debugs("[new_child_iseq]> ---------------------------------------\n");
ret = rb_iseq_new_with_opt(node, name,
iseq_path(iseq->self), iseq_absolute_path(iseq->self),
INT2FIX(line_no), parent, type, iseq->compile_data->option);
debugs("[new_child_iseq]< ---------------------------------------\n");
iseq_add_mark_object(iseq, ret);
return ret;
}
static int
iseq_setup(rb_iseq_t *iseq, LINK_ANCHOR *anchor)
{
/* 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->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->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");
iseq_set_sequence(iseq, anchor);
if (compile_debug > 5)
dump_disasm_list(FIRST_ELEMENT(anchor));
debugs("[compile step 4.2 (iseq_set_exception_table)]\n");
iseq_set_exception_table(iseq);
debugs("[compile step 4.3 (set_optargs_table)] \n");
iseq_set_optargs_table(iseq);
debugs("[compile step 5 (iseq_translate_threaded_code)] \n");
rb_iseq_translate_threaded_code(iseq);
if (compile_debug > 1) {
VALUE str = rb_iseq_disasm(iseq->self);
printf("%s\n", StringValueCStr(str));
fflush(stdout);
}
debugs("[compile step: finish]\n");
return 0;
}
static int
iseq_set_exception_local_table(rb_iseq_t *iseq)
{
ID id_dollar_bang;
CONST_ID(id_dollar_bang, "#$!");
iseq->local_table = (ID *)ALLOC_N(ID, 1);
iseq->local_table_size = 1;
iseq->local_size = iseq->local_table_size + 1;
iseq->local_table[0] = id_dollar_bang;
return COMPILE_OK;
}
static int
get_lvar_level(rb_iseq_t *iseq)
{
int lev = 0;
while (iseq != iseq->local_iseq) {
lev++;
iseq = iseq->parent_iseq;
}
return lev;
}
static int
get_dyna_var_idx_at_raw(rb_iseq_t *iseq, ID id)
{
int i;
for (i = 0; i < iseq->local_table_size; i++) {
if (iseq->local_table[i] == id) {
return i;
}
}
return -1;
}
static int
get_local_var_idx(rb_iseq_t *iseq, ID id)
{
int idx = get_dyna_var_idx_at_raw(iseq->local_iseq, id);
if (idx < 0) {
rb_bug("get_local_var_idx: %d", idx);
}
return idx;
}
static int
get_dyna_var_idx(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->parent_iseq;
lv++;
}
if (idx < 0) {
rb_bug("get_dyna_var_idx: -1");
}
*level = lv;
*ls = iseq->local_size;
return idx;
}
static int
iseq_set_arguments(rb_iseq_t *iseq, LINK_ANCHOR *optargs, NODE *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;
if (nd_type(node_args) != NODE_ARGS) {
rb_bug("iseq_set_arguments: NODE_ARGS is expected, but %s",
ruby_node_name(nd_type(node_args)));
}
iseq->argc = (int)args->pre_args_num;
debugs(" - argc: %d\n", iseq->argc);
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->arg_post_start = get_dyna_var_idx_at_raw(iseq, args->first_post_arg);
iseq->arg_post_len = args->post_args_num;
}
if (args->opt_args) {
NODE *node = args->opt_args;
LABEL *label;
VALUE labels = rb_ary_tmp_new(1);
int i = 0, j;
while (node) {
label = NEW_LABEL(nd_line(node));
rb_ary_push(labels, (VALUE)label | 1);
ADD_LABEL(optargs, label);
COMPILE_POPED(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);
i += 1;
iseq->arg_opts = i;
iseq->arg_opt_table = ALLOC_N(VALUE, i);
MEMCPY(iseq->arg_opt_table, RARRAY_CONST_PTR(labels), VALUE, i);
for (j = 0; j < i; j++) {
iseq->arg_opt_table[j] &= ~1;
}
rb_ary_clear(labels);
}
else {
iseq->arg_opts = 0;
}
if (args->kw_args) {
NODE *node = args->kw_args;
VALUE keywords = rb_ary_tmp_new(1);
VALUE required = 0;
int i = 0, j, r = 0;
iseq->arg_keyword = get_dyna_var_idx_at_raw(iseq, args->kw_rest_arg->nd_vid);
COMPILE(optargs, "kwarg", args->kw_rest_arg);
while (node) {
VALUE list = keywords;
if (node->nd_body->nd_value == (NODE *)-1) {
++r;
if (!required) required = rb_ary_tmp_new(1);
list = required;
}
rb_ary_push(list, ID2SYM(node->nd_body->nd_vid));
COMPILE_POPED(optargs, "kwarg", node); /* nd_type(node) == NODE_KW_ARG */
node = node->nd_next;
i += 1;
}
iseq->arg_keyword_check = args->kw_rest_arg->nd_cflag != 0;
iseq->arg_keywords = i;
iseq->arg_keyword_required = r;
iseq->arg_keyword_table = ALLOC_N(ID, i);
if (r) {
rb_ary_concat(required, keywords);
keywords = required;
}
for (j = 0; j < i; j++) {
iseq->arg_keyword_table[j] = SYM2ID(RARRAY_AREF(keywords, j));
}
ADD_INSN(optargs, nd_line(args->kw_args), pop);
}
else if (args->kw_rest_arg) {
iseq->arg_keyword = get_dyna_var_idx_at_raw(iseq, args->kw_rest_arg->nd_vid);
COMPILE(optargs, "kwarg", args->kw_rest_arg);
ADD_INSN(optargs, nd_line(args->kw_rest_arg), pop);
}
else {
iseq->arg_keyword = -1;
}
if (args->pre_init) { /* m_init */
COMPILE_POPED(optargs, "init arguments (m)", args->pre_init);
}
if (args->post_init) { /* p_init */
COMPILE_POPED(optargs, "init arguments (p)", args->post_init);
}
if (rest_id) {
iseq->arg_rest = get_dyna_var_idx_at_raw(iseq, rest_id);
if (iseq->arg_rest == -1) {
rb_bug("arg_rest: -1");
}
if (iseq->arg_post_start == 0) {
iseq->arg_post_start = iseq->arg_rest + 1;
}
}
if (block_id) {
iseq->arg_block = get_dyna_var_idx_at_raw(iseq, block_id);
}
if (iseq->arg_opts != 0 || iseq->arg_post_len != 0 ||
iseq->arg_rest != -1 || iseq->arg_block != -1 ||
iseq->arg_keyword != -1) {
iseq->arg_simple = 0;
/* set arg_size: size of arguments */
if (iseq->arg_keyword != -1) {
iseq->arg_size = iseq->arg_keyword + 1;
}
else if (iseq->arg_block != -1) {
iseq->arg_size = iseq->arg_block + 1;
}
else if (iseq->arg_post_len) {
iseq->arg_size = iseq->arg_post_start + iseq->arg_post_len;
}
else if (iseq->arg_rest != -1) {
iseq->arg_size = iseq->arg_rest + 1;
}
else if (iseq->arg_opts) {
iseq->arg_size = iseq->argc + iseq->arg_opts - 1;
}
else {
iseq->arg_size = iseq->argc;
}
}
else {
iseq->arg_simple = 1;
iseq->arg_size = iseq->argc;
}
if (iseq->type == ISEQ_TYPE_BLOCK) {
if (iseq->arg_opts == 0 && iseq->arg_post_len == 0 &&
iseq->arg_rest == -1 && iseq->arg_keyword == -1) {
if (iseq->argc == 1 && last_comma == 0) {
/* {|a|} */
iseq->arg_simple |= 0x02;
}
}
}
}
else {
iseq->arg_simple = 1;
}
return COMPILE_OK;
}
static int
iseq_set_local_table(rb_iseq_t *iseq, ID *tbl)
{
int size;
if (tbl) {
size = (int)*tbl;
tbl++;
}
else {
size = 0;
}
if (size > 0) {
iseq->local_table = (ID *)ALLOC_N(ID, size);
MEMCPY(iseq->local_table, tbl, ID, size);
}
iseq->local_size = iseq->local_table_size = size;
iseq->local_size += 1;
/*
if (lfp == dfp ) { // top, class, method
dfp[-1]: svar
else { // block
dfp[-1]: cref
}
*/
debugs("iseq_set_local_table: %d, %d\n", iseq->local_size, iseq->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;
}
/**
ruby insn object list -> raw instruction sequence
*/
static int
iseq_set_sequence(rb_iseq_t *iseq, LINK_ANCHOR *anchor)
{
LABEL *lobj;
INSN *iobj;
struct iseq_line_info_entry *line_info_table;
unsigned int last_line = 0;
LINK_ELEMENT *list;
VALUE *generated_iseq;
int k, pos, sp, stack_max = 0, line = 0;
/* set label position */
list = FIRST_ELEMENT(anchor);
k = pos = 0;
while (list) {
switch (list->type) {
case ISEQ_ELEMENT_INSN:
{
iobj = (INSN *)list;
line = iobj->line_no;
pos += insn_data_length(iobj);
k++;
break;
}
case ISEQ_ELEMENT_LABEL:
{
lobj = (LABEL *)list;
lobj->position = pos;
lobj->set = TRUE;
break;
}
case ISEQ_ELEMENT_NONE:
{
/* ignore */
break;
}
case ISEQ_ELEMENT_ADJUST:
{
ADJUST *adjust = (ADJUST *)list;
if (adjust->line_no != -1) {
pos += 2 /* insn + 1 operand */;
k++;
}
break;
}
default:
dump_disasm_list(FIRST_ELEMENT(anchor));
dump_disasm_list(list);
rb_compile_error(RSTRING_PTR(iseq->location.path), line,
"error: set_sequence");
break;
}
list = list->next;
}
/* make instruction sequence */
generated_iseq = ALLOC_N(VALUE, pos);
line_info_table = ALLOC_N(struct iseq_line_info_entry, k);
iseq->is_entries = ZALLOC_N(union iseq_inline_storage_entry, iseq->is_size);
iseq->callinfo_entries = ALLOC_N(rb_call_info_t, iseq->callinfo_size);
/* MEMZERO(iseq->callinfo_entries, rb_call_info_t, iseq->callinfo_size); */
list = FIRST_ELEMENT(anchor);
k = pos = sp = 0;
while (list) {
switch (list->type) {
case ISEQ_ELEMENT_INSN:
{
int j, len, insn;
const char *types;
VALUE *operands;
iobj = (INSN *)list;
/* update sp */
sp = calc_sp_depth(sp, iobj);
if (sp > stack_max) {
stack_max = sp;
}
/* fprintf(stderr, "insn: %-16s, sp: %d\n", insn_name(iobj->insn_id), sp); */
operands = iobj->operands;
insn = iobj->insn_id;
generated_iseq[pos] = insn;
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); */
dump_disasm_list(list);
rb_compile_error(RSTRING_PTR(iseq->location.path), iobj->line_no,
"operand size miss! (%d for %d)",
iobj->operand_size, len - 1);
xfree(generated_iseq);
xfree(line_info_table);
return 0;
}
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) */
lobj = (LABEL *)operands[j];
if (!lobj->set) {
rb_compile_error(RSTRING_PTR(iseq->location.path), iobj->line_no,
"unknown label");
}
if (lobj->sp == -1) {
lobj->sp = sp;
}
generated_iseq[pos + 1 + j] = lobj->position - (pos + len);
break;
}
case TS_CDHASH:
{
VALUE map = operands[j];
struct cdhash_set_label_struct data;
data.hash = map;
data.pos = pos;
data.len = len;
rb_hash_foreach(map, cdhash_set_label_i, (VALUE)&data);
hide_obj(map);
generated_iseq[pos + 1 + j] = map;
break;
}
case TS_LINDEX:
case TS_NUM: /* ulong */
generated_iseq[pos + 1 + j] = FIX2INT(operands[j]);
break;
case TS_ISEQ: /* iseq */
{
VALUE v = operands[j];
rb_iseq_t *block = 0;
if (v) {
GetISeqPtr(v, block);
}
generated_iseq[pos + 1 + j] = (VALUE)block;
break;
}
case TS_VALUE: /* VALUE */
{
VALUE v = operands[j];
generated_iseq[pos + 1 + j] = v;
/* to mark ruby object */
iseq_add_mark_object(iseq, v);
break;
}
case TS_IC: /* inline cache */
{
int ic_index = FIX2INT(operands[j]);
IC ic = (IC)&iseq->is_entries[ic_index];
if (UNLIKELY(ic_index >= iseq->is_size)) {
rb_bug("iseq_set_sequence: ic_index overflow: index: %d, size: %d", ic_index, iseq->is_size);
}
generated_iseq[pos + 1 + j] = (VALUE)ic;
break;
}
case TS_CALLINFO: /* call info */
{
rb_call_info_t *base_ci = (rb_call_info_t *)operands[j];
rb_call_info_t *ci = &iseq->callinfo_entries[base_ci->aux.index];
*ci = *base_ci;
if (UNLIKELY(base_ci->aux.index >= iseq->callinfo_size)) {
rb_bug("iseq_set_sequence: ci_index overflow: index: %d, size: %d", base_ci->argc, iseq->callinfo_size);
}
generated_iseq[pos + 1 + j] = (VALUE)ci;
break;
}
case TS_ID: /* ID */
generated_iseq[pos + 1 + j] = SYM2ID(operands[j]);
break;
case TS_GENTRY:
{
struct rb_global_entry *entry =
(struct rb_global_entry *)(operands[j] & (~1));
generated_iseq[pos + 1 + j] = (VALUE)entry;
}
break;
default:
rb_compile_error(RSTRING_PTR(iseq->location.path), iobj->line_no,
"unknown operand type: %c", type);
xfree(generated_iseq);
xfree(line_info_table);
return 0;
}
}
if (last_line != iobj->line_no) {
line_info_table[k].line_no = last_line = iobj->line_no;
line_info_table[k].position = pos;
k++;
}
pos += len;
break;
}
case ISEQ_ELEMENT_LABEL:
{
lobj = (LABEL *)list;
if (lobj->sp == -1) {
lobj->sp = sp;
}
else {
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) {
if (orig_sp - sp > 0) {
if (last_line != (unsigned int)adjust->line_no) {
line_info_table[k].line_no = last_line = adjust->line_no;
line_info_table[k].position = pos;
k++;
}
generated_iseq[pos++] = BIN(adjuststack);
generated_iseq[pos++] = orig_sp - sp;
}
else if (orig_sp - sp == 0) {
/* jump to next insn */
if (last_line != (unsigned int)adjust->line_no) {
line_info_table[k].line_no = last_line = adjust->line_no;
line_info_table[k].position = pos;
k++;
}
generated_iseq[pos++] = BIN(jump);
generated_iseq[pos++] = 0;
}
else {
rb_bug("iseq_set_sequence: adjust bug");
}
}
break;
}
default:
/* ignore */
break;
}
list = list->next;
}
#if 0 /* XXX */
/* this check need dead code elimination */
if (sp != 1) {
rb_bug("SP is not 0 on %s (%d)\n", RSTRING_PTR(iseq->name), sp);
}
#endif
iseq->iseq_encoded = (void *)generated_iseq;
iseq->iseq_size = pos;
iseq->stack_max = stack_max;
REALLOC_N(line_info_table, struct iseq_line_info_entry, k);
iseq->line_info_table = line_info_table;
iseq->line_info_size = k;
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;
int tlen, i;
struct iseq_catch_table_entry *entry;
tlen = (int)RARRAY_LEN(iseq->compile_data->catch_table_ary);
tptr = RARRAY_CONST_PTR(iseq->compile_data->catch_table_ary);
iseq->catch_table = 0;
if (tlen > 0) {
iseq->catch_table = xmalloc(iseq_catch_table_bytes(tlen));
iseq->catch_table->size = tlen;
}
if (iseq->catch_table) for (i = 0; i < iseq->catch_table->size; i++) {
ptr = RARRAY_CONST_PTR(tptr[i]);
entry = &iseq->catch_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 = ptr[3];
/* register iseq as mark object */
if (entry->iseq != 0) {
iseq_add_mark_object(iseq, 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;
}
}
RB_OBJ_WRITE(iseq->self, &iseq->compile_data->catch_table_ary, 0); /* free */
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;
if (iseq->arg_opts != 0) {
for (i = 0; i < iseq->arg_opts; i++) {
iseq->arg_opt_table[i] =
label_get_position((LABEL *)iseq->arg_opt_table[i]);
}
}
return COMPILE_OK;
}
static LINK_ELEMENT *
get_destination_insn(INSN *iobj)
{
LABEL *lobj = (LABEL *)OPERAND_AT(iobj, 0);
LINK_ELEMENT *list;
list = lobj->link.next;
while (list) {
if (list->type == ISEQ_ELEMENT_INSN || list->type == ISEQ_ELEMENT_ADJUST) {
break;
}
list = list->next;
}
return list;
}
static LINK_ELEMENT *
get_next_insn(INSN *iobj)
{
LINK_ELEMENT *list = iobj->link.next;
while (list) {
if (list->type == ISEQ_ELEMENT_INSN || list->type == ISEQ_ELEMENT_ADJUST) {
return list;
}
list = list->next;
}
return 0;
}
static LINK_ELEMENT *
get_prev_insn(INSN *iobj)
{
LINK_ELEMENT *list = iobj->link.prev;
while (list) {
if (list->type == ISEQ_ELEMENT_INSN || list->type == ISEQ_ELEMENT_ADJUST) {
return list;
}
list = list->prev;
}
return 0;
}
static int
iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcallopt)
{
INSN *iobj = (INSN *)list;
again:
if (iobj->insn_id == BIN(jump)) {
INSN *niobj, *diobj, *piobj;
/*
* useless jump elimination:
* jump LABEL1
* ...
* LABEL1:
* jump LABEL2
*
* => in this case, first jump instruction should jump to
* LABEL2 directly
*/
diobj = (INSN *)get_destination_insn(iobj);
niobj = (INSN *)get_next_insn(iobj);
if (diobj == niobj) {
/*
* jump LABEL
* LABEL:
* =>
* LABEL:
*/
REMOVE_ELEM(&iobj->link);
}
else if (iobj != diobj && diobj->insn_id == BIN(jump)) {
if (OPERAND_AT(iobj, 0) != OPERAND_AT(diobj, 0)) {
OPERAND_AT(iobj, 0) = OPERAND_AT(diobj, 0);
goto again;
}
}
else if (diobj->insn_id == BIN(leave)) {
/*
* jump LABEL
* ...
* LABEL:
* leave
* =>
* leave
* ...
* LABEL:
* leave
*/
INSN *eiobj = new_insn_core(iseq, iobj->line_no, BIN(leave),
diobj->operand_size, diobj->operands);
INSN *popiobj = new_insn_core(iseq, iobj->line_no,
BIN(pop), 0, 0);
/* replace */
REPLACE_ELEM((LINK_ELEMENT *)iobj, (LINK_ELEMENT *)eiobj);
INSERT_ELEM_NEXT((LINK_ELEMENT *)eiobj, (LINK_ELEMENT *)popiobj);
iobj = popiobj;
}
/*
* useless jump elimination (if/unless destination):
* if L1
* jump L2
* L1:
* ...
* L2:
*
* ==>
* unless L2
* L1:
* ...
* L2:
*/
else if ((piobj = (INSN *)get_prev_insn(iobj)) != 0 &&
(piobj->insn_id == BIN(branchif) ||
piobj->insn_id == BIN(branchunless))) {
if (niobj == (INSN *)get_destination_insn(piobj)) {
piobj->insn_id = (piobj->insn_id == BIN(branchif))
? BIN(branchunless) : BIN(branchif);
OPERAND_AT(piobj, 0) = OPERAND_AT(iobj, 0);
REMOVE_ELEM(&iobj->link);
}
}
}
if (iobj->insn_id == BIN(branchif) ||
iobj->insn_id == BIN(branchunless)) {
/*
* if L1
* ...
* L1:
* jump L2
* =>
* if L2
*/
INSN *nobj = (INSN *)get_destination_insn(iobj);
if (nobj->insn_id == BIN(jump)) {
OPERAND_AT(iobj, 0) = OPERAND_AT(nobj, 0);
}
}
if (do_tailcallopt && iobj->insn_id == BIN(leave)) {
/*
* send ...
* leave
* =>
* send ..., ... | VM_CALL_TAILCALL, ...
* leave # unreachable
*/
INSN *piobj = (INSN *)get_prev_insn((INSN *)list);
enum ruby_vminsn_type previ = piobj->insn_id;
if (previ == BIN(send) || previ == BIN(opt_send_simple) || previ == BIN(invokesuper)) {
rb_call_info_t *ci = (rb_call_info_t *)piobj->operands[0];
if (ci->blockiseq == 0) {
ci->flag |= VM_CALL_TAILCALL;
}
}
}
return COMPILE_OK;
}
static int
insn_set_specialized_instruction(rb_iseq_t *iseq, INSN *iobj, int insn_id)
{
int old_opsize = iobj->operand_size;
iobj->insn_id = insn_id;
iobj->operand_size = insn_len(insn_id) - 1;
if (iobj->operand_size > old_opsize) {
VALUE *old_operands = iobj->operands;
if (insn_id != BIN(opt_neq)) {
rb_bug("insn_set_specialized_instruction: unknown insn: %d", insn_id);
}
iobj->operands = (VALUE *)compile_data_alloc(iseq, iobj->operand_size * sizeof(VALUE));
iobj->operands[0] = old_operands[0];
iobj->operands[1] = (VALUE)new_callinfo(iseq, idEq, 1, 0, 0);
}
return COMPILE_OK;
}
static int
iseq_specialized_instruction(rb_iseq_t *iseq, INSN *iobj)
{
if (iobj->insn_id == BIN(send)) {
rb_call_info_t *ci = (rb_call_info_t *)OPERAND_AT(iobj, 0);
#define SP_INSN(opt) insn_set_specialized_instruction(iseq, iobj, BIN(opt_##opt))
if (ci->blockiseq == 0 && (ci->flag & ~VM_CALL_ARGS_SKIP_SETUP) == 0) {
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_SKIP_SETUP) {
iobj->insn_id = BIN(opt_send_simple);
}
}
#undef SP_INSN
return COMPILE_OK;
}
static int
iseq_optimize(rb_iseq_t *iseq, LINK_ANCHOR *anchor)
{
LINK_ELEMENT *list;
const int do_peepholeopt = iseq->compile_data->option->peephole_optimization;
const int do_tailcallopt = iseq->compile_data->option->tailcall_optimization;
const int do_si = iseq->compile_data->option->specialized_instruction;
const int do_ou = iseq->compile_data->option->operands_unification;
list = FIRST_ELEMENT(anchor);
while (list) {
if (list->type == ISEQ_ELEMENT_INSN) {
if (do_peepholeopt) {
iseq_peephole_optimize(iseq, list, do_tailcallopt);
}
if (do_si) {
iseq_specialized_instruction(iseq, (INSN *)list);
}
if (do_ou) {
insn_operands_unification((INSN *)list);
}
}
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->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 *anchor)
{
#if OPT_INSTRUCTIONS_UNIFICATION
LINK_ELEMENT *list;
INSN *iobj, *niobj;
int id, k;
intptr_t j;
list = FIRST_ELEMENT(anchor);
while (list) {
if (list->type == ISEQ_ELEMENT_INSN) {
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 (li->type != ISEQ_ELEMENT_INSN ||
((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, 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) {
dump_disasm_list((LINK_ELEMENT *)iobj);
dump_disasm_list((LINK_ELEMENT *)lobj);
printf("\n-- %d, %d\n", lobj->sc_state, nstate);
rb_compile_error(RSTRING_PTR(iseq->location.path), iobj->line_no,
"insn_set_sc_state error\n");
return 0;
}
}
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 *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 */
REPLACE_ELEM(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);
REMOVE_ELEM(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:
rb_compile_error(RSTRING_PTR(iseq->location.path), iobj->line_no,
"unreachable");
}
/* remove useless pop */
REMOVE_ELEM(list);
list = list->next;
goto redo_point;
}
default:;
/* none */
} /* end of switch */
normal_insn:
state = insn_set_sc_state(iseq, 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
compile_dstr_fragments(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE *node, int *cntp)
{
NODE *list = node->nd_next;
VALUE lit = node->nd_lit;
int cnt = 0;
debugp_param("nd_lit", lit);
if (!NIL_P(lit)) {
cnt++;
if (RB_TYPE_P(lit, T_STRING))
lit = node->nd_lit = rb_fstring(node->nd_lit);
ADD_INSN1(ret, nd_line(node), putobject, lit);
}
while (list) {
node = list->nd_head;
if (nd_type(node) == NODE_STR) {
node->nd_lit = rb_fstring(node->nd_lit);
ADD_INSN1(ret, nd_line(node), putobject, node->nd_lit);
}
else {
COMPILE(ret, "each string", node);
}
cnt++;
list = list->nd_next;
}
*cntp = cnt;
return COMPILE_OK;
}
static int
compile_dstr(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE * node)
{
int cnt;
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 *ret, NODE * node)
{
int cnt;
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_branch_condition(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE * cond,
LABEL *then_label, LABEL *else_label)
{
switch (nd_type(cond)) {
case NODE_AND:
{
LABEL *label = NEW_LABEL(nd_line(cond));
compile_branch_condition(iseq, ret, cond->nd_1st, label,
else_label);
ADD_LABEL(ret, label);
compile_branch_condition(iseq, ret, cond->nd_2nd, then_label,
else_label);
break;
}
case NODE_OR:
{
LABEL *label = NEW_LABEL(nd_line(cond));
compile_branch_condition(iseq, ret, cond->nd_1st, then_label,
label);
ADD_LABEL(ret, label);
compile_branch_condition(iseq, ret, cond->nd_2nd, then_label,
else_label);
break;
}
case NODE_LIT: /* NODE_LIT is always not true */
case NODE_TRUE:
case NODE_STR:
/* 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;
default:
COMPILE(ret, "branch condition", cond);
ADD_INSNL(ret, nd_line(cond), branchunless, else_label);
ADD_INSNL(ret, nd_line(cond), jump, then_label);
break;
}
return COMPILE_OK;
}
enum compile_array_type_t {
COMPILE_ARRAY_TYPE_ARRAY,
COMPILE_ARRAY_TYPE_HASH,
COMPILE_ARRAY_TYPE_ARGS
};
static int
compile_array_(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE* node_root,
enum compile_array_type_t type, int poped)
{
NODE *node = node_root;
int line = (int)nd_line(node);
int len = 0;
if (nd_type(node) == NODE_ZARRAY) {
if (!poped) {
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) {
NODE *start_node = node, *end_node;
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 && nd_type(node) != NODE_ARRAY) {
rb_bug("compile_array: This node is not NODE_ARRAY, but %s", ruby_node_name(nd_type(node)));
}
if (type == COMPILE_ARRAY_TYPE_HASH && !node->nd_head) {
opt_p = 0;
kw = node->nd_next;
node = kw->nd_next;
kw = kw->nd_head;
break;
}
if (opt_p && nd_type(node->nd_head) != NODE_LIT) {
opt_p = 0;
}
COMPILE_(anchor, "array element", node->nd_head, poped);
}
if (opt_p && type != COMPILE_ARRAY_TYPE_ARGS) {
if (!poped) {
VALUE ary = rb_ary_tmp_new(i);
end_node = node;
node = start_node;
while (node != end_node) {
rb_ary_push(ary, node->nd_head->nd_lit);
node = node->nd_next;
}
while (node && nd_type(node->nd_head) == NODE_LIT &&
node->nd_next && nd_type(node->nd_next->nd_head) == NODE_LIT) {
rb_ary_push(ary, node->nd_head->nd_lit);
node = node->nd_next;
rb_ary_push(ary, node->nd_head->nd_lit);
node = node->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 {
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));
}
}
}
}
else {
if (!poped) {
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 {
/* poped */
APPEND_LIST(ret, anchor);
}
}
}
}
return len;
}
static VALUE
compile_array(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE* node_root, enum compile_array_type_t type)
{
return compile_array_(iseq, ret, node_root, type, 0);
}
static VALUE
case_when_optimizable_literal(NODE * 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_STR:
return node->nd_lit = rb_fstring(node->nd_lit);
}
return Qundef;
}
static int
when_vals(rb_iseq_t *iseq, LINK_ANCHOR *cond_seq, NODE *vals, LABEL *l1, int only_special_literals, VALUE literals)
{
while (vals) {
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) {
rb_compile_warning(RSTRING_PTR(iseq->location.path), 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) {
val->nd_lit = rb_fstring(val->nd_lit);
debugp_param("nd_lit", val->nd_lit);
ADD_INSN1(cond_seq, nd_line(val), putobject, val->nd_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 *ret, NODE *node)
{
switch (nd_type(node)) {
case NODE_ATTRASGN: {
INSN *iobj;
rb_call_info_t *ci;
VALUE dupidx;
COMPILE_POPED(ret, "masgn lhs (NODE_ATTRASGN)", node);
POP_ELEMENT(ret); /* pop pop insn */
iobj = (INSN *)POP_ELEMENT(ret); /* pop send insn */
ci = (rb_call_info_t *)iobj->operands[0];
ci->orig_argc += 1; ci->argc = ci->orig_argc;
dupidx = INT2FIX(ci->orig_argc);
ADD_INSN1(ret, nd_line(node), topn, dupidx);
ADD_ELEM(ret, (LINK_ELEMENT *)iobj);
ADD_INSN(ret, nd_line(node), pop); /* result */
ADD_INSN(ret, nd_line(node), pop); /* rhs */
break;
}
case NODE_MASGN: {
DECL_ANCHOR(anchor);
INIT_ANCHOR(anchor);
COMPILE_POPED(anchor, "nest masgn lhs", node);
REMOVE_ELEM(FIRST_ELEMENT(anchor));
ADD_SEQ(ret, anchor);
break;
}
default: {
DECL_ANCHOR(anchor);
INIT_ANCHOR(anchor);
COMPILE_POPED(anchor, "masgn lhs", node);
REMOVE_ELEM(FIRST_ELEMENT(anchor));
ADD_SEQ(ret, anchor);
}
}
return COMPILE_OK;
}
static void
compile_massign_opt_lhs(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE *lhsn)
{
if (lhsn) {
compile_massign_opt_lhs(iseq, ret, lhsn->nd_next);
compile_massign_lhs(iseq, ret, lhsn->nd_head);
}
}
static int
compile_massign_opt(rb_iseq_t *iseq, LINK_ANCHOR *ret,
NODE *rhsn, NODE *orig_lhsn)
{
VALUE mem[64];
const int memsize = numberof(mem);
int memindex = 0;
int llen = 0, rlen = 0;
int i;
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) {
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_IASGN2:
case NODE_CVASGN:
MEMORY(ln->nd_vid);
break;
default:
return 0;
}
lhsn = lhsn->nd_next;
llen++;
}
while (rhsn) {
if (llen <= rlen) {
COMPILE_POPED(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 int
compile_massign(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE *node, int poped)
{
NODE *rhsn = node->nd_value;
NODE *splatn = node->nd_args;
NODE *lhsn = node->nd_head;
int lhs_splat = (splatn && (VALUE)splatn != (VALUE)-1) ? 1 : 0;
if (!poped || splatn || !compile_massign_opt(iseq, ret, rhsn, lhsn)) {
int llen = 0;
DECL_ANCHOR(lhsseq);
INIT_ANCHOR(lhsseq);
while (lhsn) {
compile_massign_lhs(iseq, lhsseq, lhsn->nd_head);
llen += 1;
lhsn = lhsn->nd_next;
}
COMPILE(ret, "normal masgn rhs", rhsn);
if (!poped) {
ADD_INSN(ret, nd_line(node), dup);
}
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 */
NODE *postn = splatn->nd_2nd;
NODE *restn = splatn->nd_1st;
int num = (int)postn->nd_alen;
int flag = 0x02 | (((VALUE)restn == (VALUE)-1) ? 0x00 : 0x01);
ADD_INSN2(ret, nd_line(splatn), expandarray,
INT2FIX(num), INT2FIX(flag));
if ((VALUE)restn != (VALUE)-1) {
compile_massign_lhs(iseq, ret, restn);
}
while (postn) {
compile_massign_lhs(iseq, ret, postn->nd_head);
postn = postn->nd_next;
}
}
else {
/* a, b, *r */
compile_massign_lhs(iseq, ret, splatn);
}
}
}
return COMPILE_OK;
}
static int
compile_colon2(rb_iseq_t *iseq, NODE * node,
LINK_ANCHOR *pref, LINK_ANCHOR *body)
{
switch (nd_type(node)) {
case NODE_CONST:
debugi("compile_colon2 - colon", node->nd_vid);
ADD_INSN1(body, nd_line(node), getconstant, ID2SYM(node->nd_vid));
break;
case NODE_COLON3:
debugi("compile_colon2 - 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:
compile_colon2(iseq, node->nd_head, pref, body);
debugi("compile_colon2 - colon2", node->nd_mid);
ADD_INSN1(body, nd_line(node), getconstant, ID2SYM(node->nd_mid));
break;
default:
COMPILE(pref, "const colon2 prefix", node);
break;
}
return COMPILE_OK;
}
static VALUE
compile_cpath(LINK_ANCHOR *ret, rb_iseq_t *iseq, NODE *cpath)
{
if (nd_type(cpath) == NODE_COLON3) {
/* toplevel class ::Foo */
ADD_INSN1(ret, nd_line(cpath), putobject, rb_cObject);
return Qfalse;
}
else if (cpath->nd_head) {
/* Bar::Foo */
COMPILE(ret, "nd_else->nd_head", cpath->nd_head);
return Qfalse;
}
else {
/* class at cbase Foo */
ADD_INSN1(ret, nd_line(cpath), putspecialobject,
INT2FIX(VM_SPECIAL_OBJECT_CONST_BASE));
return Qtrue;
}
}
#define private_recv_p(node) (nd_type((node)->nd_recv) == NODE_SELF)
#define defined_expr defined_expr0
static int
defined_expr(rb_iseq_t *iseq, LINK_ANCHOR *ret,
NODE *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:{
NODE *vals = node;
do {
defined_expr(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_expr(iseq, ret, node->nd_head, lfinish, Qfalse);
ADD_INSNL(ret, nd_line(node), branchunless, lfinish[1]);
if (rb_is_const_id(node->nd_mid)) {
COMPILE(ret, "defined/colon2#nd_head", node->nd_head);
ADD_INSN3(ret, nd_line(node), defined, INT2FIX(DEFINED_CONST),
ID2SYM(node->nd_mid), needstr);
}
else {
COMPILE(ret, "defined/colon2#nd_head", node->nd_head);
ADD_INSN3(ret, nd_line(node), defined, 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_VCALL:
case NODE_FCALL:
case NODE_ATTRASGN:{
const int explicit_receiver =
(type == NODE_CALL ||
(type == NODE_ATTRASGN && !private_recv_p(node)));
if (!lfinish[1]) {
lfinish[1] = NEW_LABEL(nd_line(node));
}
if (node->nd_args) {
defined_expr(iseq, ret, node->nd_args, lfinish, Qfalse);
ADD_INSNL(ret, nd_line(node), branchunless, lfinish[1]);
}
if (explicit_receiver) {
defined_expr(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_CVDECL:
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;
}
#undef defined_expr
static int
defined_expr(rb_iseq_t *iseq, LINK_ANCHOR *ret,
NODE *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);
VALUE rescue = NEW_CHILD_ISEQVAL(NEW_NIL(),
rb_str_concat(rb_str_new2
("defined guard in "),
iseq->location.label),
ISEQ_TYPE_DEFINED_GUARD, 0);
APPEND_LABEL(ret, lcur, lstart);
ADD_LABEL(ret, lend);
ADD_CATCH_ENTRY(CATCH_TYPE_RESCUE, lstart, lend, rescue, lfinish[1]);
}
return done;
}
static VALUE
make_name_for_block(rb_iseq_t *iseq)
{
int level = 1;
rb_iseq_t *ip = iseq;
if (iseq->parent_iseq != 0) {
while (ip->local_iseq != ip) {
if (ip->type == ISEQ_TYPE_BLOCK) {
level++;
}
ip = ip->parent_iseq;
}
}
if (level == 1) {
return rb_sprintf("block in %"PRIsVALUE, ip->location.label);
}
else {
return rb_sprintf("block (%d levels) in %"PRIsVALUE, level, ip->location.label);
}
}
static void
push_ensure_entry(rb_iseq_t *iseq,
struct iseq_compile_data_ensure_node_stack *enl,
struct ensure_range *er, NODE *node)
{
enl->ensure_node = node;
enl->prev = iseq->compile_data->ensure_node_stack; /* prev */
enl->erange = er;
iseq->compile_data->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 *ret, rb_iseq_t *iseq, int is_return)
{
struct iseq_compile_data_ensure_node_stack *enlp =
iseq->compile_data->ensure_node_stack;
struct iseq_compile_data_ensure_node_stack *prev_enlp = enlp;
DECL_ANCHOR(ensure);
INIT_ANCHOR(ensure);
while (enlp) {
if (enlp->erange != 0) {
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->ensure_node_stack = enlp->prev;
ADD_LABEL(ensure_part, lstart);
COMPILE_POPED(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->ensure_node_stack = prev_enlp;
ADD_SEQ(ret, ensure);
}
static VALUE
setup_args(rb_iseq_t *iseq, LINK_ANCHOR *args, NODE *argn, unsigned int *flag)
{
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);
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 (next_is_array && nsplat == 0) {
/* none */
}
else {
if (nd_type(argn) == NODE_ARGSCAT) {
ADD_INSN1(tmp, nd_line(argn), splatarray, Qfalse);
}
else {
ADD_INSN1(tmp, nd_line(argn), newarray, INT2FIX(1));
}
}
INSERT_LIST(args_splat, tmp);
nsplat++;
*flag |= VM_CALL_ARGS_SPLAT;
if (next_is_array) {
argc = INT2FIX(compile_array(iseq, args, argn->nd_head, COMPILE_ARRAY_TYPE_ARGS) + 1);
}
else {
argn = argn->nd_head;
goto setup_argn;
}
break;
}
case NODE_ARRAY: {
argc = INT2FIX(compile_array(iseq, args, argn, COMPILE_ARRAY_TYPE_ARGS));
break;
}
default: {
rb_bug("setup_arg: unknown node: %s\n", ruby_node_name(nd_type(argn)));
}
}
}
if (nsplat > 1) {
int i;
for (i=1; i<nsplat; i++) {
ADD_INSN(args_splat, nd_line(args), concatarray);
}
}
if (!LIST_SIZE_ZERO(args_splat)) {
ADD_SEQ(args, args_splat);
}
if (*flag & VM_CALL_ARGS_BLOCKARG) {
ADD_SEQ(args, arg_block);
}
return argc;
}
static VALUE
build_postexe_iseq(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE *body)
{
int line = nd_line(body);
VALUE argc = INT2FIX(0);
VALUE block = NEW_CHILD_ISEQVAL(body, make_name_for_block(iseq->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;
}
/**
compile each node
self: InstructionSequence
node: Ruby compiled node
poped: This node will be poped
*/
static int
iseq_compile_each(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE * node, int poped)
{
enum node_type type;
LINK_ELEMENT *saved_last_element = 0;
int line;
if (node == 0) {
if (!poped) {
debugs("node: NODE_NIL(implicit)\n");
ADD_INSN(ret, iseq->compile_data->last_line, putnil);
}
return COMPILE_OK;
}
iseq->compile_data->last_line = line = (int)nd_line(node);
debug_node_start(node);
type = nd_type(node);
if (node->flags & NODE_FL_NEWLINE) {
ADD_TRACE(ret, line, RUBY_EVENT_LINE);
saved_last_element = ret->last;
}
switch (type) {
case NODE_BLOCK:{
while (node && nd_type(node) == NODE_BLOCK) {
COMPILE_(ret, "BLOCK body", node->nd_head,
(node->nd_next == 0 && poped == 0) ? 0 : 1);
node = node->nd_next;
}
if (node) {
COMPILE_(ret, "BLOCK next", node->nd_next, poped);
}
break;
}
case NODE_IF:{
DECL_ANCHOR(cond_seq);
DECL_ANCHOR(then_seq);
DECL_ANCHOR(else_seq);
LABEL *then_label, *else_label, *end_label;
INIT_ANCHOR(cond_seq);
INIT_ANCHOR(then_seq);
INIT_ANCHOR(else_seq);
then_label = NEW_LABEL(line);
else_label = NEW_LABEL(line);
end_label = NEW_LABEL(line);
compile_branch_condition(iseq, cond_seq, node->nd_cond,
then_label, else_label);
COMPILE_(then_seq, "then", node->nd_body, poped);
COMPILE_(else_seq, "else", node->nd_else, poped);
ADD_SEQ(ret, cond_seq);
ADD_LABEL(ret, then_label);
ADD_SEQ(ret, then_seq);
ADD_INSNL(ret, line, jump, end_label);
ADD_LABEL(ret, else_label);
ADD_SEQ(ret, else_seq);
ADD_LABEL(ret, end_label);
break;
}
case NODE_CASE:{
NODE *vals;
NODE *tempnode = 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();
INIT_ANCHOR(head);
INIT_ANCHOR(body_seq);
INIT_ANCHOR(cond_seq);
rb_hash_tbl_raw(literals)->type = &cdhash_type;
if (node->nd_head == 0) {
COMPILE_(ret, "when", node->nd_body, poped);
break;
}
COMPILE(head, "case base", node->nd_head);
node = node->nd_body;
type = nd_type(node);
line = nd_line(node);
if (type != NODE_WHEN) {
COMPILE_ERROR((ERROR_ARGS "NODE_CASE: unexpected node. must be NODE_WHEN, but %s", ruby_node_name(type)));
}
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);
COMPILE_(body_seq, "when body", node->nd_body, poped);
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);
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:
rb_bug("NODE_CASE: unknown node (%s)",
ruby_node_name(nd_type(vals)));
}
}
else {
rb_bug("NODE_CASE: must be NODE_ARRAY, but 0");
}
node = node->nd_next;
if (!node) {
break;
}
type = nd_type(node);
line = nd_line(node);
}
/* else */
if (node) {
ADD_LABEL(cond_seq, elselabel);
ADD_INSN(cond_seq, line, pop);
COMPILE_(cond_seq, "else", node, poped);
ADD_INSNL(cond_seq, line, jump, endlabel);
}
else {
debugs("== else (implicit)\n");
ADD_LABEL(cond_seq, elselabel);
ADD_INSN(cond_seq, nd_line(tempnode), pop);
if (!poped) {
ADD_INSN(cond_seq, nd_line(tempnode), putnil);
}
ADD_INSNL(cond_seq, nd_line(tempnode), jump, endlabel);
}
if (only_special_literals) {
iseq_add_mark_object(iseq, literals);
ADD_INSN(ret, nd_line(tempnode), dup);
ADD_INSN2(ret, nd_line(tempnode), opt_case_dispatch, literals, elselabel);
}
ADD_SEQ(ret, cond_seq);
ADD_SEQ(ret, body_seq);
ADD_LABEL(ret, endlabel);
break;
}
case NODE_WHEN:{
NODE *vals;
NODE *val;
NODE *orig_node = node;
LABEL *endlabel;
DECL_ANCHOR(body_seq);
INIT_ANCHOR(body_seq);
endlabel = NEW_LABEL(line);
while (node && nd_type(node) == NODE_WHEN) {
LABEL *l1 = NEW_LABEL(line = nd_line(node));
ADD_LABEL(body_seq, l1);
COMPILE_(body_seq, "when", node->nd_body, poped);
ADD_INSNL(body_seq, line, jump, endlabel);
vals = node->nd_head;
if (!vals) {
rb_bug("NODE_WHEN: must be NODE_ARRAY, but 0");
}
switch (nd_type(vals)) {
case NODE_ARRAY:
while (vals) {
val = vals->nd_head;
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);
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:
rb_bug("NODE_WHEN: unknown node (%s)",
ruby_node_name(nd_type(vals)));
}
node = node->nd_next;
}
/* else */
COMPILE_(ret, "else", node, poped);
ADD_INSNL(ret, nd_line(orig_node), jump, endlabel);
ADD_SEQ(ret, body_seq);
ADD_LABEL(ret, endlabel);
break;
}
case NODE_OPT_N:
case NODE_WHILE:
case NODE_UNTIL:{
LABEL *prev_start_label = iseq->compile_data->start_label;
LABEL *prev_end_label = iseq->compile_data->end_label;
LABEL *prev_redo_label = iseq->compile_data->redo_label;
int prev_loopval_popped = iseq->compile_data->loopval_popped;
struct iseq_compile_data_ensure_node_stack enl;
LABEL *next_label = iseq->compile_data->start_label = NEW_LABEL(line); /* next */
LABEL *redo_label = iseq->compile_data->redo_label = NEW_LABEL(line); /* redo */
LABEL *break_label = iseq->compile_data->end_label = NEW_LABEL(line); /* break */
LABEL *end_label = NEW_LABEL(line);
LABEL *next_catch_label = NEW_LABEL(line);
LABEL *tmp_label = NULL;
iseq->compile_data->loopval_popped = 0;
push_ensure_entry(iseq, &enl, 0, 0);
if (type == NODE_OPT_N || 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_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);
COMPILE_POPED(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 if (type == NODE_UNTIL) {
/* until */
compile_branch_condition(iseq, ret, node->nd_cond,
end_label, redo_label);
}
else {
ADD_CALL_RECEIVER(ret, line);
ADD_CALL(ret, line, idGets, INT2FIX(0));
ADD_INSNL(ret, line, branchif, redo_label);
/* opt_n */
}
ADD_LABEL(ret, end_label);
if (node->nd_state == Qundef) {
/* ADD_INSN(ret, line, putundef); */
rb_bug("unsupported: putundef");
}
else {
ADD_INSN(ret, line, putnil);
}
ADD_LABEL(ret, break_label); /* break */
if (poped) {
ADD_INSN(ret, line, pop);
}
ADD_CATCH_ENTRY(CATCH_TYPE_BREAK, redo_label, break_label,
0, break_label);
ADD_CATCH_ENTRY(CATCH_TYPE_NEXT, redo_label, break_label, 0,
next_catch_label);
ADD_CATCH_ENTRY(CATCH_TYPE_REDO, redo_label, break_label, 0,
iseq->compile_data->redo_label);
iseq->compile_data->start_label = prev_start_label;
iseq->compile_data->end_label = prev_end_label;
iseq->compile_data->redo_label = prev_redo_label;
iseq->compile_data->loopval_popped = prev_loopval_popped;
iseq->compile_data->ensure_node_stack = iseq->compile_data->ensure_node_stack->prev;
break;
}
case NODE_ITER:
case NODE_FOR:{
VALUE prevblock = iseq->compile_data->current_block;
LABEL *retry_label = NEW_LABEL(line);
LABEL *retry_end_l = NEW_LABEL(line);
ADD_LABEL(ret, retry_label);
if (nd_type(node) == NODE_FOR) {
COMPILE(ret, "iter caller (for)", node->nd_iter);
iseq->compile_data->current_block =
NEW_CHILD_ISEQVAL(node->nd_body, make_name_for_block(iseq),
ISEQ_TYPE_BLOCK, line);
ADD_SEND_R(ret, line, idEach, INT2FIX(0),
iseq->compile_data->current_block, INT2FIX(0));
}
else {
iseq->compile_data->current_block =
NEW_CHILD_ISEQVAL(node->nd_body, make_name_for_block(iseq),
ISEQ_TYPE_BLOCK, line);
COMPILE(ret, "iter caller", node->nd_iter);
}
ADD_LABEL(ret, retry_end_l);
if (poped) {
ADD_INSN(ret, line, pop);
}
iseq->compile_data->current_block = prevblock;
ADD_CATCH_ENTRY(CATCH_TYPE_BREAK, retry_label, retry_end_l, 0, retry_end_l);
break;
}
case NODE_BREAK:{
unsigned long level = 0;
if (iseq->compile_data->redo_label != 0) {
/* while/until */
LABEL *splabel = NEW_LABEL(0);
ADD_LABEL(ret, splabel);
ADD_ADJUST(ret, line, iseq->compile_data->redo_label);
COMPILE_(ret, "break val (while/until)", node->nd_stts, iseq->compile_data->loopval_popped);
add_ensure_iseq(ret, iseq, 0);
ADD_INSNL(ret, line, jump, iseq->compile_data->end_label);
ADD_ADJUST_RESTORE(ret, splabel);
if (!poped) {
ADD_INSN(ret, line, putnil);
}
}
else if (iseq->type == ISEQ_TYPE_BLOCK) {
break_by_insn:
/* escape from block */
COMPILE(ret, "break val (block)", node->nd_stts);
ADD_INSN1(ret, line, throw, INT2FIX(level | 0x02) /* TAG_BREAK */ );
if (poped) {
ADD_INSN(ret, line, pop);
}
}
else if (iseq->type == ISEQ_TYPE_EVAL) {
break_in_eval:
COMPILE_ERROR((ERROR_ARGS "Can't escape from eval with break"));
}
else {
rb_iseq_t *ip = iseq->parent_iseq;
while (ip) {
if (!ip->compile_data) {
ip = 0;
break;
}
level++;
if (ip->compile_data->redo_label != 0) {
level = 0x8000;
if (ip->compile_data->loopval_popped == 0) {
/* need value */
level |= 0x4000;
}
goto break_by_insn;
}
else if (ip->type == ISEQ_TYPE_BLOCK) {
level <<= 16;
goto break_by_insn;
}
else if (ip->type == ISEQ_TYPE_EVAL) {
goto break_in_eval;
}
ip = ip->parent_iseq;
}
COMPILE_ERROR((ERROR_ARGS "Invalid break"));
}
break;
}
case NODE_NEXT:{
unsigned long level = 0;
if (iseq->compile_data->redo_label != 0) {
LABEL *splabel = NEW_LABEL(0);
debugs("next in while loop\n");
ADD_LABEL(ret, splabel);
COMPILE(ret, "next val/valid syntax?", node->nd_stts);
add_ensure_iseq(ret, iseq, 0);
ADD_ADJUST(ret, line, iseq->compile_data->redo_label);
ADD_INSNL(ret, line, jump, iseq->compile_data->start_label);
ADD_ADJUST_RESTORE(ret, splabel);
if (!poped) {
ADD_INSN(ret, line, putnil);
}
}
else if (iseq->compile_data->end_label) {
LABEL *splabel = NEW_LABEL(0);
debugs("next in block\n");
ADD_LABEL(ret, splabel);
ADD_ADJUST(ret, line, iseq->compile_data->start_label);
COMPILE(ret, "next val", node->nd_stts);
add_ensure_iseq(ret, iseq, 0);
ADD_INSNL(ret, line, jump, iseq->compile_data->end_label);
ADD_ADJUST_RESTORE(ret, splabel);
if (!poped) {
ADD_INSN(ret, line, putnil);
}
}
else if (iseq->type == ISEQ_TYPE_EVAL) {
next_in_eval:
COMPILE_ERROR((ERROR_ARGS "Can't escape from eval with next"));
}
else {
rb_iseq_t *ip;
ip = iseq;
while (ip) {
if (!ip->compile_data) {
ip = 0;
break;
}
level = 0x8000 | 0x4000;
if (ip->compile_data->redo_label != 0) {
/* while loop */
break;
}
else if (ip->type == ISEQ_TYPE_BLOCK) {
break;
}
else if (ip->type == ISEQ_TYPE_EVAL) {
goto next_in_eval;
}
ip = ip->parent_iseq;
}
if (ip != 0) {
COMPILE(ret, "next val", node->nd_stts);
ADD_INSN1(ret, line, throw, INT2FIX(level | 0x03) /* TAG_NEXT */ );
if (poped) {
ADD_INSN(ret, line, pop);
}
}
else {
COMPILE_ERROR((ERROR_ARGS "Invalid next"));
}
}
break;
}
case NODE_REDO:{
if (iseq->compile_data->redo_label) {
LABEL *splabel = NEW_LABEL(0);
debugs("redo in while");
ADD_LABEL(ret, splabel);
ADD_ADJUST(ret, line, iseq->compile_data->redo_label);
add_ensure_iseq(ret, iseq, 0);
ADD_INSNL(ret, line, jump, iseq->compile_data->redo_label);
ADD_ADJUST_RESTORE(ret, splabel);
if (!poped) {
ADD_INSN(ret, line, putnil);
}
}
else if (iseq->type == ISEQ_TYPE_EVAL) {
redo_in_eval:
COMPILE_ERROR((ERROR_ARGS "Can't escape from eval with redo"));
}
else if (iseq->compile_data->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->start_label);
ADD_INSNL(ret, line, jump, iseq->compile_data->start_label);
ADD_ADJUST_RESTORE(ret, splabel);
if (!poped) {
ADD_INSN(ret, line, putnil);
}
}
else {
rb_iseq_t *ip;
unsigned long level;
level = 0x8000 | 0x4000;
ip = iseq;
while (ip) {
if (!ip->compile_data) {
ip = 0;
break;
}
if (ip->compile_data->redo_label != 0) {
break;
}
else if (ip->type == ISEQ_TYPE_BLOCK) {
break;
}
else if (ip->type == ISEQ_TYPE_EVAL) {
goto redo_in_eval;
}
ip = ip->parent_iseq;
}
if (ip != 0) {
ADD_INSN(ret, line, putnil);
ADD_INSN1(ret, line, throw, INT2FIX(level | 0x05) /* TAG_REDO */ );
if (poped) {
ADD_INSN(ret, line, pop);
}
}
else {
COMPILE_ERROR((ERROR_ARGS "Invalid redo"));
}
}
break;
}
case NODE_RETRY:{
if (iseq->type == ISEQ_TYPE_RESCUE) {
ADD_INSN(ret, line, putnil);
ADD_INSN1(ret, line, throw, INT2FIX(0x04) /* TAG_RETRY */ );
if (poped) {
ADD_INSN(ret, line, pop);
}
}
else {
COMPILE_ERROR((ERROR_ARGS "Invalid retry"));
}
break;
}
case NODE_BEGIN:{
COMPILE_(ret, "NODE_BEGIN", node->nd_body, poped);
break;
}
case NODE_RESCUE:{
LABEL *lstart = NEW_LABEL(line);
LABEL *lend = NEW_LABEL(line);
LABEL *lcont = NEW_LABEL(line);
VALUE rescue = NEW_CHILD_ISEQVAL(
node->nd_resq,
rb_str_concat(rb_str_new2("rescue in "), iseq->location.label),
ISEQ_TYPE_RESCUE, line);
ADD_LABEL(ret, lstart);
COMPILE(ret, "rescue head", node->nd_head);
ADD_LABEL(ret, lend);
if (node->nd_else) {
ADD_INSN(ret, line, pop);
COMPILE(ret, "rescue else", node->nd_else);
}
ADD_INSN(ret, line, nop);
ADD_LABEL(ret, lcont);
if (poped) {
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, 0, lstart);
break;
}
case NODE_RESBODY:{
NODE *resq = node;
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_INSN2(ret, line, getlocal, INT2FIX(2), INT2FIX(0));
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_INSN2(ret, line, getlocal, INT2FIX(2), INT2FIX(0));
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:
rb_bug("NODE_RESBODY: unknown node (%s)",
ruby_node_name(nd_type(narg)));
}
}
else {
ADD_INSN2(ret, line, getlocal, INT2FIX(2), INT2FIX(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);
COMPILE(ret, "resbody body", resq->nd_body);
if (iseq->compile_data->option->tailcall_optimization) {
ADD_INSN(ret, line, nop);
}
ADD_INSN(ret, line, leave);
ADD_LABEL(ret, label_miss);
resq = resq->nd_head;
}
break;
}
case NODE_ENSURE:{
DECL_ANCHOR(ensr);
VALUE ensure = NEW_CHILD_ISEQVAL(node->nd_ensr,
rb_str_concat(rb_str_new2
("ensure in "),
iseq->location.label),
ISEQ_TYPE_ENSURE, line);
LABEL *lstart = NEW_LABEL(line);
LABEL *lend = NEW_LABEL(line);
LABEL *lcont = NEW_LABEL(line);
struct ensure_range er;
struct iseq_compile_data_ensure_node_stack enl;
struct ensure_range *erange;
INIT_ANCHOR(ensr);
COMPILE_POPED(ensr, "ensure ensr", node->nd_ensr);
er.begin = lstart;
er.end = lend;
er.next = 0;
push_ensure_entry(iseq, &enl, &er, node->nd_ensr);
ADD_LABEL(ret, lstart);
COMPILE_(ret, "ensure head", node->nd_head, poped);
ADD_LABEL(ret, lend);
if (ensr->anchor.next == 0) {
ADD_INSN(ret, line, nop);
}
else {
ADD_SEQ(ret, ensr);
}
ADD_LABEL(ret, lcont);
erange = iseq->compile_data->ensure_node_stack->erange;
while (erange) {
ADD_CATCH_ENTRY(CATCH_TYPE_ENSURE, erange->begin, erange->end,
ensure, lcont);
erange = erange->next;
}
iseq->compile_data->ensure_node_stack = enl.prev;
break;
}
case NODE_AND:
case NODE_OR:{
LABEL *end_label = NEW_LABEL(line);
COMPILE(ret, "nd_1st", node->nd_1st);
if (!poped) {
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 (!poped) {
ADD_INSN(ret, line, pop);
}
COMPILE_(ret, "nd_2nd", node->nd_2nd, poped);
ADD_LABEL(ret, end_label);
break;
}
case NODE_MASGN:{
compile_massign(iseq, ret, node, poped);
break;
}
case NODE_LASGN:{
ID id = node->nd_vid;
int idx = iseq->local_iseq->local_size - get_local_var_idx(iseq, id);
debugs("lvar: %s idx: %d\n", rb_id2name(id), idx);
COMPILE(ret, "rvalue", node->nd_value);
if (!poped) {
ADD_INSN(ret, line, dup);
}
ADD_INSN2(ret, line, setlocal, INT2FIX(idx), INT2FIX(get_lvar_level(iseq)));
break;
}
case NODE_DASGN:
case NODE_DASGN_CURR:{
int idx, lv, ls;
COMPILE(ret, "dvalue", node->nd_value);
debugp_param("dassn id", rb_str_new2(rb_id2name(node->nd_vid) ? rb_id2name(node->nd_vid) : "*"));
if (!poped) {
ADD_INSN(ret, line, dup);
}
idx = get_dyna_var_idx(iseq, node->nd_vid, &lv, &ls);
if (idx < 0) {
rb_bug("NODE_DASGN(_CURR): unknown id (%s)", rb_id2name(node->nd_vid));
}
ADD_INSN2(ret, line, setlocal, INT2FIX(ls - idx), INT2FIX(lv));
break;
}
case NODE_GASGN:{
COMPILE(ret, "lvalue", node->nd_value);
if (!poped) {
ADD_INSN(ret, line, dup);
}
ADD_INSN1(ret, line, setglobal,
((VALUE)node->nd_entry | 1));
break;
}
case NODE_IASGN:
case NODE_IASGN2:{
COMPILE(ret, "lvalue", node->nd_value);
if (!poped) {
ADD_INSN(ret, line, dup);
}
ADD_INSN2(ret, line, setinstancevariable,
ID2SYM(node->nd_vid), INT2FIX(iseq->is_size++));
break;
}
case NODE_CDECL:{
COMPILE(ret, "lvalue", node->nd_value);
if (!poped) {
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:{
COMPILE(ret, "cvasgn val", node->nd_value);
if (!poped) {
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 (!poped) {
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);
ADD_SEQ(ret, args);
}
ADD_INSN1(ret, line, dupn, FIXNUM_INC(argc, 1 + boff));
flag |= asgnflag;
ADD_SEND_R(ret, line, idAREF, argc, Qfalse, INT2FIX(flag));
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);
COMPILE(ret, "NODE_OP_ASGN1 args->body: ", node->nd_args->nd_body);
if (!poped) {
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_R(ret, line, idASET,
argc, Qfalse, INT2FIX(flag));
}
else {
if (boff > 0)
ADD_INSN(ret, line, swap);
ADD_SEND_R(ret, line, idASET,
FIXNUM_INC(argc, 1), Qfalse, INT2FIX(flag));
}
ADD_INSN(ret, line, pop);
ADD_INSNL(ret, line, jump, lfin);
ADD_LABEL(ret, label);
if (!poped) {
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 {
COMPILE(ret, "NODE_OP_ASGN1 args->body: ", node->nd_args->nd_body);
ADD_SEND(ret, line, id, INT2FIX(1));
if (!poped) {
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_R(ret, line, idASET,
argc, Qfalse, INT2FIX(flag));
}
else {
if (boff > 0)
ADD_INSN(ret, line, swap);
ADD_SEND_R(ret, line, idASET,
FIXNUM_INC(argc, 1), Qfalse, INT2FIX(flag));
}
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_OP_ASGN2:{
ID atype = node->nd_next->nd_mid;
VALUE asgnflag;
LABEL *lfin = NEW_LABEL(line);
LABEL *lcfin = NEW_LABEL(line);
/*
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);
ADD_INSN(ret, line, dup);
ADD_SEND_R(ret, line, node->nd_next->nd_vid,
INT2FIX(0), Qfalse, INT2FIX(asgnflag));
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);
COMPILE(ret, "NODE_OP_ASGN2 val", node->nd_value);
ADD_INSN(ret, line, swap);
ADD_INSN1(ret, line, topn, INT2FIX(1));
ADD_SEND_R(ret, line, node->nd_next->nd_aid,
INT2FIX(1), Qfalse, 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 (poped) {
/* we can apply more optimize */
ADD_INSN(ret, line, pop);
}
}
else {
COMPILE(ret, "NODE_OP_ASGN2 val", node->nd_value);
ADD_SEND(ret, line, node->nd_next->nd_mid,
INT2FIX(1));
if (!poped) {
ADD_INSN(ret, line, swap);
ADD_INSN1(ret, line, topn, INT2FIX(1));
}
ADD_SEND_R(ret, line, node->nd_next->nd_aid,
INT2FIX(1), Qfalse, INT2FIX(asgnflag));
ADD_INSN(ret, line, pop);
}
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:
COMPILE(ret, "NODE_OP_CDECL/colon2#nd_head", node->nd_head->nd_head);
break;
default:
do {
COMPILE_ERROR((ERROR_ARGS "%s: invalid node in NODE_OP_CDECL",
ruby_node_name(nd_type(node->nd_head))));
} while (0);
return COMPILE_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 (!poped) 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 (!poped) ADD_INSN(ret, line, pop); /* cref */
if (lassign) ADD_LABEL(ret, lassign);
COMPILE(ret, "NODE_OP_CDECL#nd_value", node->nd_value);
/* cref value */
if (poped)
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 (!poped) ADD_INSN(ret, line, swap); /* [value] cref */
ADD_INSN(ret, line, pop); /* [value] */
}
else {
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 (!poped) {
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);
}
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);
COMPILE(ret, "NODE_OP_ASGN_AND/OR#nd_value", node->nd_value);
ADD_LABEL(ret, lfin);
if (poped) {
/* we can apply more optimize */
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_CALL:
/* 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_args == NULL)
{
VALUE str = rb_fstring(node->nd_recv->nd_lit);
iseq_add_mark_object(iseq, str);
ADD_INSN1(ret, line, opt_str_freeze, str);
if (poped) {
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)
{
VALUE str = rb_fstring(node->nd_args->nd_head->nd_lit);
node->nd_args->nd_head->nd_lit = str;
COMPILE(ret, "recv", node->nd_recv);
ADD_INSN2(ret, line, opt_aref_with,
new_callinfo(iseq, idAREF, 1, 0, 0), str);
if (poped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_FCALL:
case NODE_VCALL:{ /* VCALL: variable or call */
/*
call: obj.method(...)
fcall: func(...)
vcall: func
*/
DECL_ANCHOR(recv);
DECL_ANCHOR(args);
ID mid = node->nd_mid;
VALUE argc;
unsigned int flag = 0;
VALUE parent_block = iseq->compile_data->current_block;
iseq->compile_data->current_block = Qfalse;
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->labels_table;
ID label_name;
if (!labels_table) {
labels_table = st_init_numtable();
iseq->compile_data->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 = SYM2ID(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"));
}
if (mid == goto_id) {
ADD_INSNL(ret, line, jump, label);
}
else {
ADD_LABEL(ret, label);
}
break;
}
}
#endif
/* receiver */
if (type == NODE_CALL) {
COMPILE(recv, "recv", node->nd_recv);
}
else if (type == NODE_FCALL || type == NODE_VCALL) {
ADD_CALL_RECEIVER(recv, line);
}
/* args */
if (nd_type(node) != NODE_VCALL) {
argc = setup_args(iseq, args, node->nd_args, &flag);
}
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 (nd_type(node)) {
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));
if (poped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_SUPER:
case NODE_ZSUPER:{
DECL_ANCHOR(args);
int argc;
unsigned int flag = 0;
VALUE parent_block = iseq->compile_data->current_block;
INIT_ANCHOR(args);
iseq->compile_data->current_block = Qfalse;
if (nd_type(node) == NODE_SUPER) {
VALUE vargc = setup_args(iseq, args, node->nd_args, &flag);
argc = FIX2INT(vargc);
}
else {
/* NODE_ZSUPER */
int i;
rb_iseq_t *liseq = iseq->local_iseq;
int lvar_level = get_lvar_level(iseq);
argc = liseq->argc;
/* normal arguments */
for (i = 0; i < liseq->argc; i++) {
int idx = liseq->local_size - i;
ADD_INSN2(args, line, getlocal, INT2FIX(idx), INT2FIX(lvar_level));
}
if (!liseq->arg_simple) {
if (liseq->arg_opts) {
/* optional arguments */
int j;
for (j = 0; j < liseq->arg_opts - 1; j++) {
int idx = liseq->local_size - (i + j);
ADD_INSN2(args, line, getlocal, INT2FIX(idx), INT2FIX(lvar_level));
}
i += j;
argc = i;
}
if (liseq->arg_rest != -1) {
/* rest argument */
int idx = liseq->local_size - liseq->arg_rest;
ADD_INSN2(args, line, getlocal, INT2FIX(idx), INT2FIX(lvar_level));
argc = liseq->arg_rest + 1;
flag |= VM_CALL_ARGS_SPLAT;
}
if (liseq->arg_post_len) {
/* post arguments */
int post_len = liseq->arg_post_len;
int post_start = liseq->arg_post_start;
if (liseq->arg_rest != -1) {
int j;
for (j=0; j<post_len; j++) {
int idx = liseq->local_size - (post_start + j);
ADD_INSN2(args, line, getlocal, INT2FIX(idx), INT2FIX(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->local_size - (post_start + j);
ADD_INSN2(args, line, getlocal, INT2FIX(idx), INT2FIX(lvar_level));
}
argc = post_len + post_start;
}
}
if (liseq->arg_keyword >= 0) {
int local_size = liseq->local_size;
int idx = local_size - liseq->arg_keyword;
argc++;
ADD_INSN1(args, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
ADD_INSN2(args, line, getlocal, INT2FIX(idx), INT2FIX(lvar_level));
ADD_SEND (args, line, rb_intern("dup"), INT2FIX(0));
for (i = 0; i < liseq->arg_keywords; ++i) {
ID id = liseq->arg_keyword_table[i];
idx = local_size - get_local_var_idx(liseq, id);
ADD_INSN1(args, line, putobject, ID2SYM(id));
ADD_INSN2(args, line, getlocal, INT2FIX(idx), INT2FIX(lvar_level));
}
ADD_SEND(args, line, id_core_hash_merge_ptr, INT2FIX(i * 2 + 1));
if (liseq->arg_rest != -1) {
ADD_INSN1(args, line, newarray, INT2FIX(1));
ADD_INSN (args, line, concatarray);
--argc;
}
}
}
}
/* dummy receiver */
ADD_INSN1(ret, line, putobject, nd_type(node) == NODE_ZSUPER ? Qfalse : Qtrue);
ADD_SEQ(ret, args);
ADD_INSN1(ret, line, invokesuper, new_callinfo(iseq, 0, argc, parent_block,
flag | VM_CALL_SUPER | VM_CALL_FCALL));
if (poped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_ARRAY:{
compile_array_(iseq, ret, node, COMPILE_ARRAY_TYPE_ARRAY, poped);
break;
}
case NODE_ZARRAY:{
if (!poped) {
ADD_INSN1(ret, line, newarray, INT2FIX(0));
}
break;
}
case NODE_VALUES:{
NODE *n = node;
while (n) {
COMPILE(ret, "values item", n->nd_head);
n = n->nd_next;
}
ADD_INSN1(ret, line, newarray, INT2FIX(node->nd_alen));
if (poped) {
ADD_INSN(ret, line, pop);
}
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:
compile_array(iseq, list, node->nd_head, COMPILE_ARRAY_TYPE_HASH);
ADD_SEQ(ret, list);
break;
case NODE_ZARRAY:
ADD_INSN1(ret, line, newhash, INT2FIX(0));
break;
default:
rb_bug("can't make hash with this node: %s", ruby_node_name(type));
}
if (poped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_RETURN:{
rb_iseq_t *is = iseq;
if (is) {
if (is->type == ISEQ_TYPE_TOP) {
COMPILE_ERROR((ERROR_ARGS "Invalid return"));
}
else {
LABEL *splabel = 0;
if (is->type == ISEQ_TYPE_METHOD) {
splabel = NEW_LABEL(0);
ADD_LABEL(ret, splabel);
ADD_ADJUST(ret, line, 0);
}
COMPILE(ret, "return nd_stts (return val)", node->nd_stts);
if (is->type == ISEQ_TYPE_METHOD) {
add_ensure_iseq(ret, iseq, 1);
ADD_TRACE(ret, line, RUBY_EVENT_RETURN);
ADD_INSN(ret, line, leave);
ADD_ADJUST_RESTORE(ret, splabel);
if (!poped) {
ADD_INSN(ret, line, putnil);
}
}
else {
ADD_INSN1(ret, line, throw, INT2FIX(0x01) /* TAG_RETURN */ );
if (poped) {
ADD_INSN(ret, line, pop);
}
}
}
}
break;
}
case NODE_YIELD:{
DECL_ANCHOR(args);
VALUE argc;
unsigned int flag = 0;
INIT_ANCHOR(args);
if (iseq->type == ISEQ_TYPE_TOP) {
COMPILE_ERROR((ERROR_ARGS "Invalid yield"));
}
if (node->nd_head) {
argc = setup_args(iseq, args, node->nd_head, &flag);
}
else {
argc = INT2FIX(0);
}
ADD_SEQ(ret, args);
ADD_INSN1(ret, line, invokeblock, new_callinfo(iseq, 0, FIX2INT(argc), 0, flag));
if (poped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_LVAR:{
if (!poped) {
ID id = node->nd_vid;
int idx = iseq->local_iseq->local_size - get_local_var_idx(iseq, id);
debugs("id: %s idx: %d\n", rb_id2name(id), idx);
ADD_INSN2(ret, line, getlocal, INT2FIX(idx), INT2FIX(get_lvar_level(iseq)));
}
break;
}
case NODE_DVAR:{
int lv, idx, ls;
debugi("nd_vid", node->nd_vid);
if (!poped) {
idx = get_dyna_var_idx(iseq, node->nd_vid, &lv, &ls);
if (idx < 0) {
rb_bug("unknown dvar (%s)", rb_id2name(node->nd_vid));
}
ADD_INSN2(ret, line, getlocal, INT2FIX(ls - idx), INT2FIX(lv));
}
break;
}
case NODE_GVAR:{
ADD_INSN1(ret, line, getglobal,
((VALUE)node->nd_entry | 1));
if (poped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_IVAR:{
debugi("nd_vid", node->nd_vid);
if (!poped) {
ADD_INSN2(ret, line, getinstancevariable,
ID2SYM(node->nd_vid), INT2FIX(iseq->is_size++));
}
break;
}
case NODE_CONST:{
debugi("nd_vid", node->nd_vid);
if (iseq->compile_data->option->inline_const_cache) {
LABEL *lend = NEW_LABEL(line);
int ic_index = iseq->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 (poped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_CVAR:{
if (!poped) {
ADD_INSN1(ret, line, getclassvariable,
ID2SYM(node->nd_vid));
}
break;
}
case NODE_NTH_REF:{
if (!poped) {
ADD_INSN2(ret, line, getspecial, INT2FIX(1) /* '~' */,
INT2FIX(node->nd_nth << 1));
}
break;
}
case NODE_BACK_REF:{
if (!poped) {
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:
COMPILE(recv, "receiver", node->nd_recv);
COMPILE(val, "value", node->nd_value);
break;
case NODE_MATCH3:
COMPILE(recv, "receiver", node->nd_value);
COMPILE(val, "value", node->nd_recv);
break;
}
if (iseq->compile_data->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_INSN1(ret, line, opt_regexpmatch2, new_callinfo(iseq, idEqTilde, 1, 0, 0));
}
}
else {
ADD_SEQ(ret, recv);
ADD_SEQ(ret, val);
ADD_SEND(ret, line, idEqTilde, INT2FIX(1));
}
if (poped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_LIT:{
debugp_param("lit", node->nd_lit);
if (!poped) {
ADD_INSN1(ret, line, putobject, node->nd_lit);
}
break;
}
case NODE_STR:{
node->nd_lit = rb_fstring(node->nd_lit);
debugp_param("nd_lit", node->nd_lit);
if (!poped) {
ADD_INSN1(ret, line, putstring, node->nd_lit);
}
break;
}
case NODE_DSTR:{
compile_dstr(iseq, ret, node);
if (poped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_XSTR:{
node->nd_lit = rb_fstring(node->nd_lit);
ADD_CALL_RECEIVER(ret, line);
ADD_INSN1(ret, line, putobject, node->nd_lit);
ADD_CALL(ret, line, idBackquote, INT2FIX(1));
if (poped) {
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 (poped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_EVSTR:{
COMPILE(ret, "nd_body", node->nd_body);
if (poped) {
ADD_INSN(ret, line, pop);
}
else {
ADD_INSN(ret, line, tostring);
}
break;
}
case NODE_DREGX:{
compile_dregx(iseq, ret, node);
if (poped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_DREGX_ONCE:{
int ic_index = iseq->is_size++;
NODE *dregx_node = NEW_NODE(NODE_DREGX, node->u1.value, node->u2.value, node->u3.value);
NODE *block_node = NEW_NODE(NODE_SCOPE, 0, dregx_node, 0);
VALUE block_iseq = NEW_CHILD_ISEQVAL(block_node, make_name_for_block(iseq), ISEQ_TYPE_BLOCK, line);
ADD_INSN2(ret, line, once, block_iseq, INT2FIX(ic_index));
if (poped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_ARGSCAT:{
if (poped) {
COMPILE(ret, "argscat head", node->nd_head);
ADD_INSN1(ret, line, splatarray, Qfalse);
ADD_INSN(ret, line, pop);
COMPILE(ret, "argscat body", node->nd_body);
ADD_INSN1(ret, line, splatarray, Qfalse);
ADD_INSN(ret, line, pop);
}
else {
COMPILE(ret, "argscat head", node->nd_head);
COMPILE(ret, "argscat body", node->nd_body);
ADD_INSN(ret, line, concatarray);
}
break;
}
case NODE_ARGSPUSH:{
if (poped) {
COMPILE(ret, "arsgpush head", node->nd_head);
ADD_INSN1(ret, line, splatarray, Qfalse);
ADD_INSN(ret, line, pop);
COMPILE_(ret, "argspush body", node->nd_body, poped);
}
else {
COMPILE(ret, "arsgpush head", node->nd_head);
COMPILE_(ret, "argspush body", node->nd_body, poped);
ADD_INSN1(ret, line, newarray, INT2FIX(1));
ADD_INSN(ret, line, concatarray);
}
break;
}
case NODE_SPLAT:{
COMPILE(ret, "splat", node->nd_head);
ADD_INSN1(ret, line, splatarray, Qtrue);
if (poped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_DEFN:{
VALUE iseqval = NEW_ISEQVAL(node->nd_defn,
rb_id2str(node->nd_mid),
ISEQ_TYPE_METHOD, line);
debugp_param("defn/iseq", iseqval);
ADD_INSN1(ret, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
ADD_INSN1(ret, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_CBASE));
ADD_INSN1(ret, line, putobject, ID2SYM(node->nd_mid));
ADD_INSN1(ret, line, putiseq, iseqval);
ADD_SEND (ret, line, id_core_define_method, INT2FIX(3));
if (poped) {
ADD_INSN(ret, line, pop);
}
debugp_param("defn", iseqval);
break;
}
case NODE_DEFS:{
VALUE iseqval = NEW_ISEQVAL(node->nd_defn,
rb_id2str(node->nd_mid),
ISEQ_TYPE_METHOD, line);
debugp_param("defs/iseq", iseqval);
ADD_INSN1(ret, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
COMPILE(ret, "defs: recv", node->nd_recv);
ADD_INSN1(ret, line, putobject, ID2SYM(node->nd_mid));
ADD_INSN1(ret, line, putiseq, iseqval);
ADD_SEND (ret, line, id_core_define_singleton_method, INT2FIX(3));
if (poped) {
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));
COMPILE(ret, "alias arg1", node->u1.node);
COMPILE(ret, "alias arg2", node->u2.node);
ADD_SEND(ret, line, id_core_set_method_alias, INT2FIX(3));
if (poped) {
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->u1.id));
ADD_INSN1(ret, line, putobject, ID2SYM(node->u2.id));
ADD_SEND(ret, line, id_core_set_variable_alias, INT2FIX(2));
if (poped) {
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));
COMPILE(ret, "undef arg", node->u2.node);
ADD_SEND(ret, line, id_core_undef_method, INT2FIX(2));
if (poped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_CLASS:{
VALUE iseqval =
NEW_CHILD_ISEQVAL(
node->nd_body,
rb_sprintf("<class:%s>", rb_id2name(node->nd_cpath->nd_mid)),
ISEQ_TYPE_CLASS, line);
VALUE noscope = compile_cpath(ret, iseq, node->nd_cpath);
int flags = VM_DEFINECLASS_TYPE_CLASS;
if (!noscope) flags |= VM_DEFINECLASS_FLAG_SCOPED;
if (node->nd_super) flags |= VM_DEFINECLASS_FLAG_HAS_SUPERCLASS;
COMPILE(ret, "super", node->nd_super);
ADD_INSN3(ret, line, defineclass,
ID2SYM(node->nd_cpath->nd_mid), iseqval, INT2FIX(flags));
if (poped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_MODULE:{
VALUE iseqval = NEW_CHILD_ISEQVAL(
node->nd_body,
rb_sprintf("<module:%s>", rb_id2name(node->nd_cpath->nd_mid)),
ISEQ_TYPE_CLASS, line);
VALUE noscope = compile_cpath(ret, iseq, node->nd_cpath);
int flags = VM_DEFINECLASS_TYPE_MODULE;
if (!noscope) flags |= VM_DEFINECLASS_FLAG_SCOPED;
ADD_INSN (ret, line, putnil); /* dummy */
ADD_INSN3(ret, line, defineclass,
ID2SYM(node->nd_cpath->nd_mid), iseqval, INT2FIX(flags));
if (poped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_SCLASS:{
ID singletonclass;
VALUE iseqval =
NEW_ISEQVAL(node->nd_body, rb_str_new2("singleton class"),
ISEQ_TYPE_CLASS, line);
COMPILE(ret, "sclass#recv", node->nd_recv);
ADD_INSN (ret, line, putnil);
CONST_ID(singletonclass, "singletonclass");
ADD_INSN3(ret, line, defineclass,
ID2SYM(singletonclass), iseqval,
INT2FIX(VM_DEFINECLASS_TYPE_SINGLETON_CLASS));
if (poped) {
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->is_size++;
DECL_ANCHOR(pref);
DECL_ANCHOR(body);
INIT_ANCHOR(pref);
INIT_ANCHOR(body);
compile_colon2(iseq, node, pref, body);
if (LIST_SIZE_ZERO(pref)) {
if (iseq->compile_data->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->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);
COMPILE(ret, "colon2#nd_head", node->nd_head);
ADD_CALL(ret, line, node->nd_mid,
INT2FIX(1));
}
if (poped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_COLON3:{
LABEL *lend = NEW_LABEL(line);
int ic_index = iseq->is_size++;
debugi("colon3#nd_mid", node->nd_mid);
/* add cache insn */
if (iseq->compile_data->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->option->inline_const_cache) {
ADD_INSN1(ret, line, setinlinecache, INT2FIX(ic_index));
ADD_LABEL(ret, lend);
}
if (poped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_DOT2:
case NODE_DOT3:{
VALUE flag = type == NODE_DOT2 ? INT2FIX(0) : INT2FIX(1);
COMPILE(ret, "min", (NODE *) node->nd_beg);
COMPILE(ret, "max", (NODE *) node->nd_end);
if (poped) {
ADD_INSN(ret, line, pop);
ADD_INSN(ret, line, pop);
}
else {
ADD_INSN1(ret, line, newrange, flag);
}
break;
}
case NODE_FLIP2:
case NODE_FLIP3:{
LABEL *lend = NEW_LABEL(line);
LABEL *lfin = NEW_LABEL(line);
LABEL *ltrue = NEW_LABEL(line);
rb_iseq_t *local_iseq = iseq->local_iseq;
rb_num_t cnt;
VALUE key;
cnt = local_iseq->flip_cnt++ + DEFAULT_SPECIAL_VAR_COUNT;
key = INT2FIX(cnt);
ADD_INSN2(ret, line, getspecial, key, INT2FIX(0));
ADD_INSNL(ret, line, branchif, lend);
/* *flip == 0 */
COMPILE(ret, "flip2 beg", node->nd_beg);
ADD_INSN(ret, line, dup);
ADD_INSNL(ret, line, branchunless, lfin);
if (nd_type(node) == NODE_FLIP3) {
ADD_INSN(ret, line, dup);
ADD_INSN1(ret, line, setspecial, key);
ADD_INSNL(ret, line, jump, lfin);
}
else {
ADD_INSN1(ret, line, setspecial, key);
}
/* *flip == 1 */
ADD_LABEL(ret, lend);
COMPILE(ret, "flip2 end", node->nd_end);
ADD_INSNL(ret, line, branchunless, ltrue);
ADD_INSN1(ret, line, putobject, Qfalse);
ADD_INSN1(ret, line, setspecial, key);
ADD_LABEL(ret, ltrue);
ADD_INSN1(ret, line, putobject, Qtrue);
ADD_LABEL(ret, lfin);
break;
}
case NODE_SELF:{
if (!poped) {
ADD_INSN(ret, line, putself);
}
break;
}
case NODE_NIL:{
if (!poped) {
ADD_INSN(ret, line, putnil);
}
break;
}
case NODE_TRUE:{
if (!poped) {
ADD_INSN1(ret, line, putobject, Qtrue);
}
break;
}
case NODE_FALSE:{
if (!poped) {
ADD_INSN1(ret, line, putobject, Qfalse);
}
break;
}
case NODE_ERRINFO:{
if (!poped) {
if (iseq->type == ISEQ_TYPE_RESCUE) {
ADD_INSN2(ret, line, getlocal, INT2FIX(2), INT2FIX(0));
}
else {
rb_iseq_t *ip = iseq;
int level = 0;
while (ip) {
if (ip->type == ISEQ_TYPE_RESCUE) {
break;
}
ip = ip->parent_iseq;
level++;
}
if (ip) {
ADD_INSN2(ret, line, getlocal, INT2FIX(2), INT2FIX(level));
}
else {
ADD_INSN(ret, line, putnil);
}
}
}
break;
}
case NODE_DEFINED:{
if (poped) break;
if (!node->nd_head) {
VALUE str = rb_iseq_defined_string(DEFINED_NIL);
ADD_INSN1(ret, nd_line(node), putobject, str);
}
else {
LABEL *lfinish[2];
lfinish[0] = NEW_LABEL(line);
lfinish[1] = 0;
ADD_INSN(ret, line, putnil);
defined_expr(iseq, ret, node->nd_head, lfinish, Qtrue);
ADD_INSN(ret, line, swap);
ADD_INSN(ret, line, pop);
if (lfinish[1]) {
ADD_LABEL(ret, lfinish[1]);
}
ADD_LABEL(ret, lfinish[0]);
}
break;
}
case NODE_POSTEXE:{
/* compiled to:
* ONCE{ rb_mRubyVMFrozenCore::core#set_postexe{ ... } }
*/
int is_index = iseq->is_size++;
VALUE once_iseq = NEW_CHILD_ISEQVAL(
NEW_IFUNC(build_postexe_iseq, node->nd_body),
make_name_for_block(iseq), ISEQ_TYPE_BLOCK, line);
ADD_INSN2(ret, line, once, once_iseq, INT2FIX(is_index));
if (poped) {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_KW_ARG:{
LABEL *default_label = NEW_LABEL(line);
LABEL *end_label = 0;
int idx, lv, ls;
ID id = node->nd_body->nd_vid;
ADD_INSN(ret, line, dup);
ADD_INSN1(ret, line, putobject, ID2SYM(id));
ADD_SEND(ret, line, rb_intern("key?"), INT2FIX(1));
ADD_INSNL(ret, line, branchunless, default_label);
ADD_INSN(ret, line, dup);
ADD_INSN1(ret, line, putobject, ID2SYM(id));
ADD_SEND(ret, line, rb_intern("delete"), INT2FIX(1));
switch (nd_type(node->nd_body)) {
case NODE_LASGN:
idx = iseq->local_iseq->local_size - get_local_var_idx(iseq, id);
ADD_INSN2(ret, line, setlocal, INT2FIX(idx), INT2FIX(get_lvar_level(iseq)));
break;
case NODE_DASGN:
case NODE_DASGN_CURR:
idx = get_dyna_var_idx(iseq, id, &lv, &ls);
ADD_INSN2(ret, line, setlocal, INT2FIX(ls - idx), INT2FIX(lv));
break;
default:
rb_bug("iseq_compile_each (NODE_KW_ARG): unknown node: %s", ruby_node_name(nd_type(node->nd_body)));
}
if (node->nd_body->nd_value != (NODE *)-1) {
end_label = NEW_LABEL(nd_line(node));
ADD_INSNL(ret, nd_line(node), jump, end_label);
}
ADD_LABEL(ret, default_label);
if (node->nd_body->nd_value != (NODE *)-1) {
COMPILE_POPED(ret, "keyword default argument", node->nd_body);
ADD_LABEL(ret, end_label);
}
break;
}
case NODE_DSYM:{
compile_dstr(iseq, ret, node);
if (!poped) {
ADD_SEND(ret, line, idIntern, INT2FIX(0));
}
else {
ADD_INSN(ret, line, pop);
}
break;
}
case NODE_ATTRASGN:{
DECL_ANCHOR(recv);
DECL_ANCHOR(args);
unsigned int flag = 0;
VALUE argc;
int asgnflag;
/* optimization shortcut
* obj["literal"] = value -> opt_aset_with(obj, "literal", value)
*/
if (node->nd_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)
{
VALUE str = rb_fstring(node->nd_args->nd_head->nd_lit);
node->nd_args->nd_head->nd_lit = str;
iseq_add_mark_object(iseq, str);
COMPILE(ret, "recv", node->nd_recv);
COMPILE(ret, "value", node->nd_args->nd_next->nd_head);
if (!poped) {
ADD_INSN(ret, line, swap);
ADD_INSN1(ret, line, topn, INT2FIX(1));
}
ADD_INSN2(ret, line, opt_aset_with,
new_callinfo(iseq, idASET, 2, 0, 0), str);
ADD_INSN(ret, line, pop);
break;
}
INIT_ANCHOR(recv);
INIT_ANCHOR(args);
argc = setup_args(iseq, args, node->nd_args, &flag);
flag |= (asgnflag = COMPILE_RECV(recv, "recv", node));
debugp_param("argc", argc);
debugp_param("nd_mid", ID2SYM(node->nd_mid));
if (!poped) {
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_R(ret, line, idAREF, INT2FIX(1), Qfalse, INT2FIX(asgnflag));
}
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_R(ret, line, idAREF, INT2FIX(1), Qfalse, INT2FIX(asgnflag));
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_R(ret, line, node->nd_mid, argc, 0, INT2FIX(flag));
ADD_INSN(ret, line, pop);
break;
}
case NODE_PRELUDE:{
COMPILE_POPED(ret, "prelude", node->nd_head);
COMPILE_(ret, "body", node->nd_body, poped);
break;
}
case NODE_LAMBDA:{
/* compile same as lambda{...} */
VALUE block = NEW_CHILD_ISEQVAL(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 (poped) {
ADD_INSN(ret, line, pop);
}
break;
}
default:
rb_bug("iseq_compile_each: unknown node: %s", ruby_node_name(type));
return COMPILE_NG;
}
/* check & remove redundant trace(line) */
if (saved_last_element && ret /* ret can be 0 when error */ &&
ret->last == saved_last_element &&
((INSN *)saved_last_element)->insn_id == BIN(trace)) {
POP_ELEMENT(ret);
}
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, "<L%03d>", 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 = iseq->self;
}
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_cat2(str, rb_id2name(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 */
{
rb_call_info_t *ci = (rb_call_info_t *)OPERAND_AT(iobj, j);
rb_str_catf(str, "<callinfo:%s, %d>", ci->mid ? rb_id2name(ci->mid) : "", ci->orig_argc);
break;
}
case TS_CDHASH: /* case/when condition cache */
rb_str_cat2(str, "<ch>");
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(struct iseq_link_element *link)
{
int pos = 0;
INSN *iobj;
LABEL *lobj;
VALUE str;
printf("-- raw disasm--------\n");
while (link) {
switch (link->type) {
case ISEQ_ELEMENT_INSN:
{
iobj = (INSN *)link;
str = insn_data_to_s_detail(iobj);
printf("%04d %-65s(%4d)\n", pos, StringValueCStr(str), iobj->line_no);
pos += insn_data_length(iobj);
break;
}
case ISEQ_ELEMENT_LABEL:
{
lobj = (LABEL *)link;
printf("<L%03d>\n", lobj->label_no);
break;
}
case ISEQ_ELEMENT_NONE:
{
printf("[none]\n");
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");
}
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 < numberof(insn_name_info); i++) {
rb_ary_push(ary, rb_fstring(rb_str_new2(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_convert_type(obj, T_SYMBOL, "Symbol", "to_sym");
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;
}
return label;
}
static VALUE
get_exception_sym2type(VALUE sym)
{
#undef rb_intern
#define rb_intern(str) rb_intern_const(str)
VALUE sym_inspect;
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;
sym_inspect = rb_inspect(sym);
rb_raise(rb_eSyntaxError, "invalid exception symbol: %s",
StringValuePtr(sym_inspect));
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++) {
VALUE v, type, eiseqval;
const VALUE *ptr;
LABEL *lstart, *lend, *lcont;
int sp;
RB_GC_GUARD(v) = rb_convert_type(RARRAY_AREF(exception, i), T_ARRAY,
"Array", "to_ary");
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) {
eiseqval = 0;
}
else {
eiseqval = rb_iseq_load(ptr[1], iseq->self, 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 = NUM2INT(ptr[5]);
(void)sp;
ADD_CATCH_ENTRY(type, lstart, lend, eiseqval, lcont);
}
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 VALUE
iseq_build_load_iseq(rb_iseq_t *iseq, VALUE op)
{
VALUE iseqval;
if (RB_TYPE_P(op, T_ARRAY)) {
iseqval = rb_iseq_load(op, iseq->self, Qnil);
}
else if (CLASS_OF(op) == rb_cISeq) {
iseqval = op;
}
else {
rb_raise(rb_eSyntaxError, "ISEQ is required");
}
iseq_add_mark_object(iseq, iseqval);
return iseqval;
}
static int
iseq_build_from_ary_body(rb_iseq_t *iseq, LINK_ANCHOR *anchor,
VALUE body, struct st_table *labels_table)
{
/* TODO: body should be frozen */
const VALUE *ptr = RARRAY_CONST_PTR(body);
long i, len = RARRAY_LEN(body);
int j;
int line_no = 0;
/*
* 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)) {
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 */
RB_GC_GUARD(insn) = rb_inspect(insn);
rb_compile_error(RSTRING_PTR(iseq->location.path), line_no,
"unknown instruction: %s", RSTRING_PTR(insn));
}
if (argc != insn_len((VALUE)insn_id)-1) {
rb_compile_error(RSTRING_PTR(iseq->location.path), line_no,
"operand size mismatch");
}
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] = iseq_build_load_iseq(iseq, op);
}
else {
argv[j] = 0;
}
}
break;
case TS_GENTRY:
op = rb_convert_type(op, T_SYMBOL, "Symbol", "to_sym");
argv[j] = (VALUE)rb_global_entry(SYM2ID(op));
break;
case TS_IC:
argv[j] = op;
if (NUM2INT(op) >= iseq->is_size) {
iseq->is_size = NUM2INT(op) + 1;
}
break;
case TS_CALLINFO:
{
ID mid = 0;
int orig_argc = 0;
VALUE block = 0;
unsigned int flag = 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 vblock = rb_hash_aref(op, ID2SYM(rb_intern("blockptr")));
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(vblock)) block = iseq_build_load_iseq(iseq, vblock);
}
argv[j] = (VALUE)new_callinfo(iseq, mid, orig_argc, block, flag);
}
break;
case TS_ID:
argv[j] = rb_convert_type(op, T_SYMBOL,
"Symbol", "to_sym");
break;
case TS_CDHASH:
{
int i;
op = rb_convert_type(op, T_ARRAY, "Array", "to_ary");
op = rb_ary_dup(op);
for (i=0; i<RARRAY_LEN(op); i+=2) {
VALUE sym = rb_ary_entry(op, i+1);
LABEL *label =
register_label(iseq, labels_table, sym);
rb_ary_store(op, i+1, (VALUE)label | 1);
}
argv[j] = op;
iseq_add_mark_object_compile_time(iseq, op);
}
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");
}
}
validate_labels(iseq, labels_table);
st_free_table(labels_table);
iseq_setup(iseq, anchor);
return COMPILE_OK;
}
#define CHECK_ARRAY(v) rb_convert_type((v), T_ARRAY, "Array", "to_ary")
#define CHECK_STRING(v) rb_convert_type((v), T_STRING, "String", "to_str")
#define CHECK_SYMBOL(v) rb_convert_type((v), T_SYMBOL, "Symbol", "to_sym")
static inline VALUE CHECK_INTEGER(VALUE v) {(void)NUM2LONG(v); return v;}
VALUE
rb_iseq_build_from_ary(rb_iseq_t *iseq, VALUE locals, VALUE args,
VALUE exception, VALUE body)
{
int i;
ID *tbl;
struct st_table *labels_table = st_init_numtable();
DECL_ANCHOR(anchor);
INIT_ANCHOR(anchor);
iseq->local_table_size = RARRAY_LENINT(locals);
iseq->local_table = tbl = (ID *)ALLOC_N(ID, iseq->local_table_size);
iseq->local_size = iseq->local_table_size + 1;
for (i=0; i<RARRAY_LEN(locals); i++) {
VALUE lv = RARRAY_AREF(locals, i);
tbl[i] = FIXNUM_P(lv) ? (ID)FIX2LONG(lv) : SYM2ID(CHECK_SYMBOL(lv));
}
/* args */
if (FIXNUM_P(args)) {
iseq->arg_size = iseq->argc = FIX2INT(args);
iseq->arg_simple = 1;
}
else {
int i = 0;
VALUE argc = CHECK_INTEGER(rb_ary_entry(args, i++));
VALUE arg_opt_labels = CHECK_ARRAY(rb_ary_entry(args, i++));
VALUE arg_post_len = CHECK_INTEGER(rb_ary_entry(args, i++));
VALUE arg_post_start = CHECK_INTEGER(rb_ary_entry(args, i++));
VALUE arg_rest = CHECK_INTEGER(rb_ary_entry(args, i++));
VALUE arg_block = CHECK_INTEGER(rb_ary_entry(args, i++));
VALUE arg_simple = CHECK_INTEGER(rb_ary_entry(args, i++));
iseq->argc = FIX2INT(argc);
iseq->arg_rest = FIX2INT(arg_rest);
iseq->arg_post_len = FIX2INT(arg_post_len);
iseq->arg_post_start = FIX2INT(arg_post_start);
iseq->arg_block = FIX2INT(arg_block);
iseq->arg_opts = RARRAY_LENINT(arg_opt_labels);
iseq->arg_opt_table = (VALUE *)ALLOC_N(VALUE, iseq->arg_opts);
if (iseq->arg_block != -1) {
iseq->arg_size = iseq->arg_block + 1;
}
else if (iseq->arg_post_len) {
iseq->arg_size = iseq->arg_post_start + iseq->arg_post_len;
}
else if (iseq->arg_rest != -1) {
iseq->arg_size = iseq->arg_rest + 1;
}
else {
iseq->arg_size = iseq->argc + (iseq->arg_opts ? iseq->arg_opts - 1 : 0);
}
for (i=0; i<RARRAY_LEN(arg_opt_labels); i++) {
iseq->arg_opt_table[i] =
(VALUE)register_label(iseq, labels_table,
rb_ary_entry(arg_opt_labels, i));
}
iseq->arg_simple = NUM2INT(arg_simple);
}
/* exception */
iseq_build_from_ary_exception(iseq, labels_table, exception);
/* body */
iseq_build_from_ary_body(iseq, anchor, body, labels_table);
return iseq->self;
}
/* for parser */
int
rb_dvar_defined(ID id)
{
rb_thread_t *th = GET_THREAD();
rb_iseq_t *iseq;
if (th->base_block && (iseq = th->base_block->iseq)) {
while (iseq->type == ISEQ_TYPE_BLOCK ||
iseq->type == ISEQ_TYPE_RESCUE ||
iseq->type == ISEQ_TYPE_ENSURE ||
iseq->type == ISEQ_TYPE_EVAL ||
iseq->type == ISEQ_TYPE_MAIN
) {
int i;
for (i = 0; i < iseq->local_table_size; i++) {
if (iseq->local_table[i] == id) {
return 1;
}
}
iseq = iseq->parent_iseq;
}
}
return 0;
}
int
rb_local_defined(ID id)
{
rb_thread_t *th = GET_THREAD();
rb_iseq_t *iseq;
if (th->base_block && th->base_block->iseq) {
int i;
iseq = th->base_block->iseq->local_iseq;
for (i=0; i<iseq->local_table_size; i++) {
if (iseq->local_table[i] == id) {
return 1;
}
}
}
return 0;
}
int
rb_parse_in_eval(void)
{
return GET_THREAD()->parse_in_eval > 0;
}
int
rb_parse_in_main(void)
{
return GET_THREAD()->parse_in_eval < 0;
}
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