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ruby--ruby/parse.y
nobu 9b1f2b073f kwrest arg name 
* compile.c (iseq_set_arguments_keywords): make keyword rest
  argument name nd_vid consistently, regardless of whether other
  keyword arguments are present.  [Fix GH-1529]

* parse.y (new_args_tail_gen): ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57733 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2017-02-27 13:52:07 +00:00

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/**********************************************************************
parse.y -
$Author$
created at: Fri May 28 18:02:42 JST 1993
Copyright (C) 1993-2007 Yukihiro Matsumoto
**********************************************************************/
%{
#if !YYPURE
# error needs pure parser
#endif
#ifndef PARSER_DEBUG
#define PARSER_DEBUG 0
#endif
#define YYDEBUG 1
#define YYERROR_VERBOSE 1
#define YYSTACK_USE_ALLOCA 0
#include "ruby/ruby.h"
#include "ruby/st.h"
#include "ruby/encoding.h"
#include "internal.h"
#include "node.h"
#include "parse.h"
#include "symbol.h"
#include "regenc.h"
#include <stdio.h>
#include <errno.h>
#include <ctype.h>
#include "probes.h"
#ifndef WARN_PAST_SCOPE
# define WARN_PAST_SCOPE 0
#endif
#define TAB_WIDTH 8
#define YYMALLOC(size) rb_parser_malloc(parser, (size))
#define YYREALLOC(ptr, size) rb_parser_realloc(parser, (ptr), (size))
#define YYCALLOC(nelem, size) rb_parser_calloc(parser, (nelem), (size))
#define YYFREE(ptr) rb_parser_free(parser, (ptr))
#define YYFPRINTF rb_parser_printf
#if defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL
# define YY_LOCATION_PRINT(File, Loc) \
rb_parser_printf(parser, "%d.%d-%d.%d", \
(Loc).first_line, (Loc).first_column, \
(Loc).last_line, (Loc).last_column)
#endif
#undef malloc
#undef realloc
#undef calloc
#undef free
#define malloc YYMALLOC
#define realloc YYREALLOC
#define calloc YYCALLOC
#define free YYFREE
enum lex_state_bits {
EXPR_BEG_bit, /* ignore newline, +/- is a sign. */
EXPR_END_bit, /* newline significant, +/- is an operator. */
EXPR_ENDARG_bit, /* ditto, and unbound braces. */
EXPR_ENDFN_bit, /* ditto, and unbound braces. */
EXPR_ARG_bit, /* newline significant, +/- is an operator. */
EXPR_CMDARG_bit, /* newline significant, +/- is an operator. */
EXPR_MID_bit, /* newline significant, +/- is an operator. */
EXPR_FNAME_bit, /* ignore newline, no reserved words. */
EXPR_DOT_bit, /* right after `.' or `::', no reserved words. */
EXPR_CLASS_bit, /* immediate after `class', no here document. */
EXPR_LABEL_bit, /* flag bit, label is allowed. */
EXPR_LABELED_bit, /* flag bit, just after a label. */
EXPR_FITEM_bit, /* symbol literal as FNAME. */
EXPR_MAX_STATE
};
/* examine combinations */
enum lex_state_e {
#define DEF_EXPR(n) EXPR_##n = (1 << EXPR_##n##_bit)
DEF_EXPR(BEG),
DEF_EXPR(END),
DEF_EXPR(ENDARG),
DEF_EXPR(ENDFN),
DEF_EXPR(ARG),
DEF_EXPR(CMDARG),
DEF_EXPR(MID),
DEF_EXPR(FNAME),
DEF_EXPR(DOT),
DEF_EXPR(CLASS),
DEF_EXPR(LABEL),
DEF_EXPR(LABELED),
DEF_EXPR(FITEM),
EXPR_VALUE = EXPR_BEG,
EXPR_BEG_ANY = (EXPR_BEG | EXPR_MID | EXPR_CLASS),
EXPR_ARG_ANY = (EXPR_ARG | EXPR_CMDARG),
EXPR_END_ANY = (EXPR_END | EXPR_ENDARG | EXPR_ENDFN)
};
#define IS_lex_state_for(x, ls) ((x) & (ls))
#define IS_lex_state_all_for(x, ls) (((x) & (ls)) == (ls))
#define IS_lex_state(ls) IS_lex_state_for(lex_state, (ls))
#define IS_lex_state_all(ls) IS_lex_state_all_for(lex_state, (ls))
# define SET_LEX_STATE(ls) \
(lex_state = (yydebug ? trace_lex_state(lex_state, (ls), __LINE__) : \
(enum lex_state_e)(ls)))
static enum lex_state_e trace_lex_state(enum lex_state_e from, enum lex_state_e to, int line);
typedef VALUE stack_type;
static void show_bitstack(stack_type, const char *, int);
# define SHOW_BITSTACK(stack, name) (yydebug ? show_bitstack(stack, name, __LINE__) : (void)0)
# define BITSTACK_PUSH(stack, n) (((stack) = ((stack)<<1)|((n)&1)), SHOW_BITSTACK(stack, #stack"(push)"))
# define BITSTACK_POP(stack) (((stack) = (stack) >> 1), SHOW_BITSTACK(stack, #stack"(pop)"))
# define BITSTACK_LEXPOP(stack) (((stack) = ((stack) >> 1) | ((stack) & 1)), SHOW_BITSTACK(stack, #stack"(lexpop)"))
# define BITSTACK_SET_P(stack) (SHOW_BITSTACK(stack, #stack), (stack)&1)
# define BITSTACK_SET(stack, n) ((stack)=(n), SHOW_BITSTACK(stack, #stack"(set)"))
#define COND_PUSH(n) BITSTACK_PUSH(cond_stack, (n))
#define COND_POP() BITSTACK_POP(cond_stack)
#define COND_LEXPOP() BITSTACK_LEXPOP(cond_stack)
#define COND_P() BITSTACK_SET_P(cond_stack)
#define COND_SET(n) BITSTACK_SET(cond_stack, (n))
#define CMDARG_PUSH(n) BITSTACK_PUSH(cmdarg_stack, (n))
#define CMDARG_POP() BITSTACK_POP(cmdarg_stack)
#define CMDARG_LEXPOP() BITSTACK_LEXPOP(cmdarg_stack)
#define CMDARG_P() BITSTACK_SET_P(cmdarg_stack)
#define CMDARG_SET(n) BITSTACK_SET(cmdarg_stack, (n))
struct vtable {
ID *tbl;
int pos;
int capa;
struct vtable *prev;
};
struct local_vars {
struct vtable *args;
struct vtable *vars;
struct vtable *used;
# if WARN_PAST_SCOPE
struct vtable *past;
# endif
struct local_vars *prev;
stack_type cmdargs;
};
#define DVARS_INHERIT ((void*)1)
#define DVARS_TOPSCOPE NULL
#define DVARS_SPECIAL_P(tbl) (!POINTER_P(tbl))
#define POINTER_P(val) ((VALUE)(val) & ~(VALUE)3)
static int
vtable_size(const struct vtable *tbl)
{
if (POINTER_P(tbl)) {
return tbl->pos;
}
else {
return 0;
}
}
#define VTBL_DEBUG 0
static struct vtable *
vtable_alloc(struct vtable *prev)
{
struct vtable *tbl = ALLOC(struct vtable);
tbl->pos = 0;
tbl->capa = 8;
tbl->tbl = ALLOC_N(ID, tbl->capa);
tbl->prev = prev;
if (VTBL_DEBUG) printf("vtable_alloc: %p\n", (void *)tbl);
return tbl;
}
static void
vtable_free(struct vtable *tbl)
{
if (VTBL_DEBUG)printf("vtable_free: %p\n", (void *)tbl);
if (POINTER_P(tbl)) {
if (tbl->tbl) {
xfree(tbl->tbl);
}
xfree(tbl);
}
}
static void
vtable_add(struct vtable *tbl, ID id)
{
if (!POINTER_P(tbl)) {
rb_bug("vtable_add: vtable is not allocated (%p)", (void *)tbl);
}
if (VTBL_DEBUG) printf("vtable_add: %p, %"PRIsVALUE"\n", (void *)tbl, rb_id2str(id));
if (tbl->pos == tbl->capa) {
tbl->capa = tbl->capa * 2;
REALLOC_N(tbl->tbl, ID, tbl->capa);
}
tbl->tbl[tbl->pos++] = id;
}
#ifndef RIPPER
static void
vtable_pop(struct vtable *tbl, int n)
{
if (tbl->pos < n) rb_bug("vtable_pop: unreachable");
tbl->pos -= n;
}
#endif
static int
vtable_included(const struct vtable * tbl, ID id)
{
int i;
if (POINTER_P(tbl)) {
for (i = 0; i < tbl->pos; i++) {
if (tbl->tbl[i] == id) {
return i+1;
}
}
}
return 0;
}
typedef struct token_info {
const char *token;
int linenum;
int column;
int nonspc;
struct token_info *next;
} token_info;
/*
Structure of Lexer Buffer:
lex_pbeg tokp lex_p lex_pend
| | | |
|-----------+--------------+------------|
|<------------>|
token
*/
struct parser_params {
NODE *heap;
YYSTYPE *lval;
struct {
NODE *strterm;
VALUE (*gets)(struct parser_params*,VALUE);
VALUE input;
VALUE lastline;
VALUE nextline;
const char *pbeg;
const char *pcur;
const char *pend;
long gets_ptr;
enum lex_state_e state;
int paren_nest;
int lpar_beg;
int brace_nest;
} lex;
stack_type cond_stack;
stack_type cmdarg_stack;
int tokidx;
int toksiz;
int tokline;
int heredoc_end;
int heredoc_indent;
int heredoc_line_indent;
char *tokenbuf;
struct local_vars *lvtbl;
int line_count;
int ruby_sourceline; /* current line no. */
char *ruby_sourcefile; /* current source file */
VALUE ruby_sourcefile_string;
rb_encoding *enc;
token_info *token_info;
VALUE compile_option;
VALUE debug_buffer;
ID cur_arg;
unsigned int command_start:1;
unsigned int eofp: 1;
unsigned int ruby__end__seen: 1;
unsigned int yydebug: 1;
unsigned int has_shebang: 1;
unsigned int in_defined: 1;
unsigned int in_main: 1;
unsigned int in_kwarg: 1;
unsigned int in_single: 1;
unsigned int in_def: 1;
unsigned int token_seen: 1;
unsigned int token_info_enabled: 1;
# if WARN_PAST_SCOPE
unsigned int past_scope_enabled: 1;
# endif
unsigned int error_p: 1;
unsigned int cr_seen: 1;
#ifndef RIPPER
/* Ruby core only */
NODE *eval_tree_begin;
NODE *eval_tree;
VALUE error_buffer;
VALUE debug_lines;
VALUE coverage;
const struct rb_block *base_block;
#else
/* Ripper only */
const char *tokp;
VALUE delayed;
int delayed_line;
int delayed_col;
VALUE value;
VALUE result;
VALUE parsing_thread;
#endif
};
#ifdef RIPPER
#define intern_cstr(n,l,en) rb_intern3(n,l,en)
#else
#define intern_cstr(n,l,en) rb_intern3(n,l,en)
#endif
#define STR_NEW(p,n) rb_enc_str_new((p),(n),current_enc)
#define STR_NEW0() rb_enc_str_new(0,0,current_enc)
#define STR_NEW2(p) rb_enc_str_new((p),strlen(p),current_enc)
#define STR_NEW3(p,n,e,func) parser_str_new((p),(n),(e),(func),current_enc)
#define TOK_INTERN() intern_cstr(tok(), toklen(), current_enc)
static int parser_yyerror(struct parser_params*, const char*);
#define yyerror(msg) parser_yyerror(parser, (msg))
#define lex_strterm (parser->lex.strterm)
#define lex_state (parser->lex.state)
#define cond_stack (parser->cond_stack)
#define cmdarg_stack (parser->cmdarg_stack)
#define paren_nest (parser->lex.paren_nest)
#define lpar_beg (parser->lex.lpar_beg)
#define brace_nest (parser->lex.brace_nest)
#define in_single (parser->in_single)
#define in_def (parser->in_def)
#define in_main (parser->in_main)
#define in_defined (parser->in_defined)
#define tokenbuf (parser->tokenbuf)
#define tokidx (parser->tokidx)
#define toksiz (parser->toksiz)
#define tokline (parser->tokline)
#define lex_input (parser->lex.input)
#define lex_lastline (parser->lex.lastline)
#define lex_nextline (parser->lex.nextline)
#define lex_pbeg (parser->lex.pbeg)
#define lex_p (parser->lex.pcur)
#define lex_pend (parser->lex.pend)
#define heredoc_end (parser->heredoc_end)
#define heredoc_indent (parser->heredoc_indent)
#define heredoc_line_indent (parser->heredoc_line_indent)
#define command_start (parser->command_start)
#define lex_gets_ptr (parser->lex.gets_ptr)
#define lex_gets (parser->lex.gets)
#define lvtbl (parser->lvtbl)
#define ruby__end__seen (parser->ruby__end__seen)
#define ruby_sourceline (parser->ruby_sourceline)
#define ruby_sourcefile (parser->ruby_sourcefile)
#define ruby_sourcefile_string (parser->ruby_sourcefile_string)
#define current_enc (parser->enc)
#define current_arg (parser->cur_arg)
#define yydebug (parser->yydebug)
#ifdef RIPPER
#define compile_for_eval (0)
#else
#define compile_for_eval (parser->base_block != 0 && !in_main)
#define ruby_eval_tree (parser->eval_tree)
#define ruby_eval_tree_begin (parser->eval_tree_begin)
#define ruby_debug_lines (parser->debug_lines)
#define ruby_coverage (parser->coverage)
#endif
#define CALL_Q_P(q) ((q) == TOKEN2VAL(tANDDOT))
#define NODE_CALL_Q(q) (CALL_Q_P(q) ? NODE_QCALL : NODE_CALL)
#define NEW_QCALL(q,r,m,a) NEW_NODE(NODE_CALL_Q(q),r,m,a)
#define lambda_beginning_p() (lpar_beg && lpar_beg == paren_nest)
static int yylex(YYSTYPE*, struct parser_params*);
static inline void
parser_set_line(NODE *n, int l)
{
nd_set_line(n, l);
}
#ifndef RIPPER
#define yyparse ruby_yyparse
static NODE* node_newnode(struct parser_params *, enum node_type, VALUE, VALUE, VALUE);
#define rb_node_newnode(type, a1, a2, a3) node_newnode(parser, (type), (a1), (a2), (a3))
static NODE *cond_gen(struct parser_params*,NODE*,int);
#define cond(node) cond_gen(parser, (node), FALSE)
#define method_cond(node) cond_gen(parser, (node), TRUE)
#define new_nil() NEW_NIL()
static NODE *new_if_gen(struct parser_params*,NODE*,NODE*,NODE*);
#define new_if(cc,left,right) new_if_gen(parser, (cc), (left), (right))
#define new_unless(cc,left,right) new_if_gen(parser, (cc), (right), (left))
static NODE *logop_gen(struct parser_params*,enum node_type,NODE*,NODE*);
#define logop(type,node1,node2) \
logop_gen(parser, (type)==tAND||(type)==(enum ruby_method_ids)tANDOP?NODE_AND:NODE_OR, \
(node1), (node2))
static NODE *newline_node(NODE*);
static void fixpos(NODE*,NODE*);
static int value_expr_gen(struct parser_params*,NODE*);
static void void_expr_gen(struct parser_params*,NODE*);
static NODE *remove_begin(NODE*);
static NODE *remove_begin_all(NODE*);
#define value_expr(node) value_expr_gen(parser, (node) = remove_begin(node))
#define void_expr0(node) void_expr_gen(parser, (node))
#define void_expr(node) void_expr0((node) = remove_begin(node))
static void void_stmts_gen(struct parser_params*,NODE*);
#define void_stmts(node) void_stmts_gen(parser, (node))
static void reduce_nodes_gen(struct parser_params*,NODE**);
#define reduce_nodes(n) reduce_nodes_gen(parser,(n))
static void block_dup_check_gen(struct parser_params*,NODE*,NODE*);
#define block_dup_check(n1,n2) block_dup_check_gen(parser,(n1),(n2))
static NODE *block_append_gen(struct parser_params*,NODE*,NODE*);
#define block_append(h,t) block_append_gen(parser,(h),(t))
static NODE *list_append_gen(struct parser_params*,NODE*,NODE*);
#define list_append(l,i) list_append_gen(parser,(l),(i))
static NODE *list_concat(NODE*,NODE*);
static NODE *arg_append_gen(struct parser_params*,NODE*,NODE*);
#define arg_append(h,t) arg_append_gen(parser,(h),(t))
static NODE *arg_concat_gen(struct parser_params*,NODE*,NODE*);
#define arg_concat(h,t) arg_concat_gen(parser,(h),(t))
static NODE *literal_concat_gen(struct parser_params*,NODE*,NODE*);
#define literal_concat(h,t) literal_concat_gen(parser,(h),(t))
static int literal_concat0(struct parser_params *, VALUE, VALUE);
static NODE *new_evstr_gen(struct parser_params*,NODE*);
#define new_evstr(n) new_evstr_gen(parser,(n))
static NODE *evstr2dstr_gen(struct parser_params*,NODE*);
#define evstr2dstr(n) evstr2dstr_gen(parser,(n))
static NODE *splat_array(NODE*);
static NODE *call_bin_op_gen(struct parser_params*,NODE*,ID,NODE*);
#define call_bin_op(recv,id,arg1) call_bin_op_gen(parser, (recv),(id),(arg1))
static NODE *call_uni_op_gen(struct parser_params*,NODE*,ID);
#define call_uni_op(recv,id) call_uni_op_gen(parser, (recv),(id))
#define new_qcall(q,r,m,a) NEW_QCALL(q,r,m,a)
#define new_command_qcall(q,r,m,a) NEW_QCALL(q,r,m,a)
static NODE *new_command_gen(struct parser_params*parser, NODE *m, NODE *a) {m->nd_args = a; return m;}
#define new_command(m,a) new_command_gen(parser, m, a)
static NODE *method_add_block_gen(struct parser_params*parser, NODE *m, NODE *b) {b->nd_iter = m; return b;}
#define method_add_block(m,b) method_add_block_gen(parser, m, b)
static NODE *new_args_gen(struct parser_params*,NODE*,NODE*,ID,NODE*,NODE*);
#define new_args(f,o,r,p,t) new_args_gen(parser, (f),(o),(r),(p),(t))
static NODE *new_args_tail_gen(struct parser_params*,NODE*,ID,ID);
#define new_args_tail(k,kr,b) new_args_tail_gen(parser, (k),(kr),(b))
#define new_kw_arg(k) ((k) ? NEW_KW_ARG(0, (k)) : 0)
static VALUE negate_lit(VALUE);
static NODE *ret_args_gen(struct parser_params*,NODE*);
#define ret_args(node) ret_args_gen(parser, (node))
static NODE *arg_blk_pass(NODE*,NODE*);
static NODE *new_yield_gen(struct parser_params*,NODE*);
#define new_yield(node) new_yield_gen(parser, (node))
static NODE *dsym_node_gen(struct parser_params*,NODE*);
#define dsym_node(node) dsym_node_gen(parser, (node))
static NODE *gettable_gen(struct parser_params*,ID);
#define gettable(id) gettable_gen(parser,(id))
static NODE *assignable_gen(struct parser_params*,ID,NODE*);
#define assignable(id,node) assignable_gen(parser, (id), (node))
static NODE *aryset_gen(struct parser_params*,NODE*,NODE*);
#define aryset(node1,node2) aryset_gen(parser, (node1), (node2))
static NODE *attrset_gen(struct parser_params*,NODE*,ID,ID);
#define attrset(node,q,id) attrset_gen(parser, (node), (q), (id))
static void rb_backref_error_gen(struct parser_params*,NODE*);
#define rb_backref_error(n) rb_backref_error_gen(parser,(n))
static NODE *node_assign_gen(struct parser_params*,NODE*,NODE*);
#define node_assign(node1, node2) node_assign_gen(parser, (node1), (node2))
static NODE *new_op_assign_gen(struct parser_params *parser, NODE *lhs, ID op, NODE *rhs);
static NODE *new_attr_op_assign_gen(struct parser_params *parser, NODE *lhs, ID atype, ID attr, ID op, NODE *rhs);
#define new_attr_op_assign(lhs, type, attr, op, rhs) new_attr_op_assign_gen(parser, (lhs), (type), (attr), (op), (rhs))
static NODE *new_const_op_assign_gen(struct parser_params *parser, NODE *lhs, ID op, NODE *rhs);
#define new_const_op_assign(lhs, op, rhs) new_const_op_assign_gen(parser, (lhs), (op), (rhs))
#define const_path_field(w, n) NEW_COLON2(w, n)
#define top_const_field(n) NEW_COLON3(n)
static NODE *const_decl_gen(struct parser_params *parser, NODE* path);
#define const_decl(path) const_decl_gen(parser, path)
#define var_field(n) (n)
#define backref_assign_error(n, a) (rb_backref_error(n), NEW_BEGIN(0))
static NODE *kwd_append(NODE*, NODE*);
static NODE *new_hash_gen(struct parser_params *parser, NODE *hash);
#define new_hash(hash) new_hash_gen(parser, (hash))
#define new_defined(expr) NEW_DEFINED(remove_begin_all(expr))
static NODE *new_regexp_gen(struct parser_params *, NODE *, int);
#define new_regexp(node, opt) new_regexp_gen(parser, node, opt)
static NODE *new_xstring_gen(struct parser_params *, NODE *);
#define new_xstring(node) new_xstring_gen(parser, node)
#define new_string1(str) (str)
#define new_brace_body(param, stmt) NEW_ITER(param, stmt)
#define new_do_body(param, stmt) NEW_ITER(param, stmt)
static NODE *match_op_gen(struct parser_params*,NODE*,NODE*);
#define match_op(node1,node2) match_op_gen(parser, (node1), (node2))
static ID *local_tbl_gen(struct parser_params*);
#define local_tbl() local_tbl_gen(parser)
static VALUE reg_compile_gen(struct parser_params*, VALUE, int);
#define reg_compile(str,options) reg_compile_gen(parser, (str), (options))
static void reg_fragment_setenc_gen(struct parser_params*, VALUE, int);
#define reg_fragment_setenc(str,options) reg_fragment_setenc_gen(parser, (str), (options))
static int reg_fragment_check_gen(struct parser_params*, VALUE, int);
#define reg_fragment_check(str,options) reg_fragment_check_gen(parser, (str), (options))
static NODE *reg_named_capture_assign_gen(struct parser_params* parser, VALUE regexp);
#define reg_named_capture_assign(regexp) reg_named_capture_assign_gen(parser,(regexp))
static NODE *parser_heredoc_dedent(struct parser_params*,NODE*);
# define heredoc_dedent(str) parser_heredoc_dedent(parser, (str))
#define get_id(id) (id)
#define get_value(val) (val)
#else /* RIPPER */
#define NODE_RIPPER NODE_CDECL
static inline VALUE
ripper_new_yylval(ID a, VALUE b, VALUE c)
{
return (VALUE)NEW_CDECL(a, b, c);
}
static inline int
ripper_is_node_yylval(VALUE n)
{
return RB_TYPE_P(n, T_NODE) && nd_type(RNODE(n)) == NODE_RIPPER;
}
#define value_expr(node) ((void)(node))
#define remove_begin(node) (node)
#define rb_dvar_defined(id, base) 0
#define rb_local_defined(id, base) 0
static ID ripper_get_id(VALUE);
#define get_id(id) ripper_get_id(id)
static VALUE ripper_get_value(VALUE);
#define get_value(val) ripper_get_value(val)
static VALUE assignable_gen(struct parser_params*,VALUE);
#define assignable(lhs,node) assignable_gen(parser, (lhs))
static int id_is_var_gen(struct parser_params *parser, ID id);
#define id_is_var(id) id_is_var_gen(parser, (id))
#define method_cond(node) (node)
#define call_bin_op(recv,id,arg1) dispatch3(binary, (recv), STATIC_ID2SYM(id), (arg1))
#define match_op(node1,node2) call_bin_op((node1), idEqTilde, (node2))
#define call_uni_op(recv,id) dispatch2(unary, STATIC_ID2SYM(id), (recv))
#define logop(type,node1,node2) call_bin_op((node1), TOKEN2ID(type), (node2))
#define node_assign(node1, node2) dispatch2(assign, (node1), (node2))
static VALUE new_qcall_gen(struct parser_params *parser, VALUE q, VALUE r, VALUE m, VALUE a);
#define new_qcall(q,r,m,a) new_qcall_gen(parser, (r), (q), (m), (a))
#define new_command_qcall(q,r,m,a) dispatch4(command_call, (r), (q), (m), (a))
#define new_command_call(q,r,m,a) dispatch4(command_call, (r), (q), (m), (a))
#define new_command(m,a) dispatch2(command, (m), (a));
#define new_nil() Qnil
static VALUE new_op_assign_gen(struct parser_params *parser, VALUE lhs, VALUE op, VALUE rhs);
static VALUE new_attr_op_assign_gen(struct parser_params *parser, VALUE lhs, VALUE type, VALUE attr, VALUE op, VALUE rhs);
#define new_attr_op_assign(lhs, type, attr, op, rhs) new_attr_op_assign_gen(parser, (lhs), (type), (attr), (op), (rhs))
#define new_const_op_assign(lhs, op, rhs) new_op_assign(lhs, op, rhs)
static VALUE new_regexp_gen(struct parser_params *, VALUE, VALUE);
#define new_regexp(node, opt) new_regexp_gen(parser, node, opt)
static VALUE new_xstring_gen(struct parser_params *, VALUE);
#define new_xstring(str) new_xstring_gen(parser, str)
#define new_string1(str) dispatch1(string_literal, str)
#define new_brace_body(param, stmt) dispatch2(brace_block, escape_Qundef(param), stmt)
#define new_do_body(param, stmt) dispatch2(do_block, escape_Qundef(param), stmt)
#define const_path_field(w, n) dispatch2(const_path_field, (w), (n))
#define top_const_field(n) dispatch1(top_const_field, (n))
static VALUE const_decl_gen(struct parser_params *parser, VALUE path);
#define const_decl(path) const_decl_gen(parser, path)
#define var_field(n) dispatch1(var_field, (n))
static VALUE assign_error_gen(struct parser_params *parser, VALUE a);
#define assign_error(a) assign_error_gen(parser, (a))
#define backref_assign_error(n, a) assign_error(a)
#define block_dup_check(n1,n2) ((void)(n1), (void)(n2))
#define fixpos(n1,n2) ((void)(n1), (void)(n2))
#undef nd_set_line
#define nd_set_line(n,l) ((void)(n))
static VALUE parser_reg_compile(struct parser_params*, VALUE, int, VALUE *);
#endif /* !RIPPER */
#define new_op_assign(lhs, op, rhs) new_op_assign_gen(parser, (lhs), (op), (rhs))
RUBY_FUNC_EXPORTED VALUE rb_parser_reg_compile(struct parser_params* parser, VALUE str, int options);
RUBY_FUNC_EXPORTED int rb_reg_fragment_setenc(struct parser_params*, VALUE, int);
static ID formal_argument_gen(struct parser_params*, ID);
#define formal_argument(id) formal_argument_gen(parser, (id))
static ID shadowing_lvar_gen(struct parser_params*,ID);
#define shadowing_lvar(name) shadowing_lvar_gen(parser, (name))
static void new_bv_gen(struct parser_params*,ID);
#define new_bv(id) new_bv_gen(parser, (id))
static void local_push_gen(struct parser_params*,int);
#define local_push(top) local_push_gen(parser,(top))
static void local_pop_gen(struct parser_params*);
#define local_pop() local_pop_gen(parser)
static void local_var_gen(struct parser_params*, ID);
#define local_var(id) local_var_gen(parser, (id))
static void arg_var_gen(struct parser_params*, ID);
#define arg_var(id) arg_var_gen(parser, (id))
static int local_id_gen(struct parser_params*, ID);
#define local_id(id) local_id_gen(parser, (id))
static ID internal_id_gen(struct parser_params*);
#define internal_id() internal_id_gen(parser)
static const struct vtable *dyna_push_gen(struct parser_params *);
#define dyna_push() dyna_push_gen(parser)
static void dyna_pop_gen(struct parser_params*, const struct vtable *);
#define dyna_pop(node) dyna_pop_gen(parser, (node))
static int dyna_in_block_gen(struct parser_params*);
#define dyna_in_block() dyna_in_block_gen(parser)
#define dyna_var(id) local_var(id)
static int dvar_defined_gen(struct parser_params*,ID,int);
#define dvar_defined(id) dvar_defined_gen(parser, (id), 0)
#define dvar_defined_get(id) dvar_defined_gen(parser, (id), 1)
static int dvar_curr_gen(struct parser_params*,ID);
#define dvar_curr(id) dvar_curr_gen(parser, (id))
static int lvar_defined_gen(struct parser_params*, ID);
#define lvar_defined(id) lvar_defined_gen(parser, (id))
#ifdef RIPPER
# define METHOD_NOT idNOT
#else
# define METHOD_NOT '!'
#endif
#define RE_OPTION_ONCE (1<<16)
#define RE_OPTION_ENCODING_SHIFT 8
#define RE_OPTION_ENCODING(e) (((e)&0xff)<<RE_OPTION_ENCODING_SHIFT)
#define RE_OPTION_ENCODING_IDX(o) (((o)>>RE_OPTION_ENCODING_SHIFT)&0xff)
#define RE_OPTION_ENCODING_NONE(o) ((o)&RE_OPTION_ARG_ENCODING_NONE)
#define RE_OPTION_MASK 0xff
#define RE_OPTION_ARG_ENCODING_NONE 32
#define NODE_STRTERM NODE_ZARRAY /* nothing to gc */
#define NODE_HEREDOC NODE_ARRAY /* 1, 3 to gc */
#define SIGN_EXTEND(x,n) (((1<<(n)-1)^((x)&~(~0<<(n))))-(1<<(n)-1))
#define nd_func u1.id
#if SIZEOF_SHORT == 2
#define nd_term(node) ((signed short)(node)->u2.id)
#else
#define nd_term(node) SIGN_EXTEND((node)->u2.id, CHAR_BIT*2)
#endif
#define nd_paren(node) (char)((node)->u2.id >> CHAR_BIT*2)
#define nd_nest u3.cnt
#define TOKEN2ID(tok) ( \
tTOKEN_LOCAL_BEGIN<(tok)&&(tok)<tTOKEN_LOCAL_END ? TOKEN2LOCALID(tok) : \
tTOKEN_INSTANCE_BEGIN<(tok)&&(tok)<tTOKEN_INSTANCE_END ? TOKEN2INSTANCEID(tok) : \
tTOKEN_GLOBAL_BEGIN<(tok)&&(tok)<tTOKEN_GLOBAL_END ? TOKEN2GLOBALID(tok) : \
tTOKEN_CONST_BEGIN<(tok)&&(tok)<tTOKEN_CONST_END ? TOKEN2CONSTID(tok) : \
tTOKEN_CLASS_BEGIN<(tok)&&(tok)<tTOKEN_CLASS_END ? TOKEN2CLASSID(tok) : \
tTOKEN_ATTRSET_BEGIN<(tok)&&(tok)<tTOKEN_ATTRSET_END ? TOKEN2ATTRSETID(tok) : \
((tok) / ((tok)<tPRESERVED_ID_END && ((tok)>=128 || rb_ispunct(tok)))))
/****** Ripper *******/
#ifdef RIPPER
#define RIPPER_VERSION "0.1.0"
static inline VALUE intern_sym(const char *name);
#include "eventids1.c"
#include "eventids2.c"
static VALUE ripper_dispatch0(struct parser_params*,ID);
static VALUE ripper_dispatch1(struct parser_params*,ID,VALUE);
static VALUE ripper_dispatch2(struct parser_params*,ID,VALUE,VALUE);
static VALUE ripper_dispatch3(struct parser_params*,ID,VALUE,VALUE,VALUE);
static VALUE ripper_dispatch4(struct parser_params*,ID,VALUE,VALUE,VALUE,VALUE);
static VALUE ripper_dispatch5(struct parser_params*,ID,VALUE,VALUE,VALUE,VALUE,VALUE);
static VALUE ripper_dispatch7(struct parser_params*,ID,VALUE,VALUE,VALUE,VALUE,VALUE,VALUE,VALUE);
static void ripper_error_gen(struct parser_params *parser);
#define ripper_error() ripper_error_gen(parser)
#define dispatch0(n) ripper_dispatch0(parser, TOKEN_PASTE(ripper_id_, n))
#define dispatch1(n,a) ripper_dispatch1(parser, TOKEN_PASTE(ripper_id_, n), (a))
#define dispatch2(n,a,b) ripper_dispatch2(parser, TOKEN_PASTE(ripper_id_, n), (a), (b))
#define dispatch3(n,a,b,c) ripper_dispatch3(parser, TOKEN_PASTE(ripper_id_, n), (a), (b), (c))
#define dispatch4(n,a,b,c,d) ripper_dispatch4(parser, TOKEN_PASTE(ripper_id_, n), (a), (b), (c), (d))
#define dispatch5(n,a,b,c,d,e) ripper_dispatch5(parser, TOKEN_PASTE(ripper_id_, n), (a), (b), (c), (d), (e))
#define dispatch7(n,a,b,c,d,e,f,g) ripper_dispatch7(parser, TOKEN_PASTE(ripper_id_, n), (a), (b), (c), (d), (e), (f), (g))
#define yyparse ripper_yyparse
#define ID2VAL(id) STATIC_ID2SYM(id)
#define TOKEN2VAL(t) ID2VAL(TOKEN2ID(t))
#define arg_new() dispatch0(args_new)
#define arg_add(l,a) dispatch2(args_add, (l), (a))
#define arg_add_star(l,a) dispatch2(args_add_star, (l), (a))
#define arg_add_block(l,b) dispatch2(args_add_block, (l), (b))
#define arg_add_optblock(l,b) ((b)==Qundef? (l) : dispatch2(args_add_block, (l), (b)))
#define bare_assoc(v) dispatch1(bare_assoc_hash, (v))
#define arg_add_assocs(l,b) arg_add((l), bare_assoc(b))
#define args2mrhs(a) dispatch1(mrhs_new_from_args, (a))
#define mrhs_new() dispatch0(mrhs_new)
#define mrhs_add(l,a) dispatch2(mrhs_add, (l), (a))
#define mrhs_add_star(l,a) dispatch2(mrhs_add_star, (l), (a))
#define mlhs_new() dispatch0(mlhs_new)
#define mlhs_add(l,a) dispatch2(mlhs_add, (l), (a))
#define mlhs_add_star(l,a) dispatch2(mlhs_add_star, (l), (a))
#define params_new(pars, opts, rest, pars2, kws, kwrest, blk) \
dispatch7(params, (pars), (opts), (rest), (pars2), (kws), (kwrest), (blk))
#define blockvar_new(p,v) dispatch2(block_var, (p), (v))
#define blockvar_add_star(l,a) dispatch2(block_var_add_star, (l), (a))
#define blockvar_add_block(l,a) dispatch2(block_var_add_block, (l), (a))
#define method_optarg(m,a) ((a)==Qundef ? (m) : dispatch2(method_add_arg,(m),(a)))
#define method_arg(m,a) dispatch2(method_add_arg,(m),(a))
#define method_add_block(m,b) dispatch2(method_add_block, (m), (b))
#define escape_Qundef(x) ((x)==Qundef ? Qnil : (x))
static inline VALUE
new_args_gen(struct parser_params *parser, VALUE f, VALUE o, VALUE r, VALUE p, VALUE tail)
{
NODE *t = (NODE *)tail;
VALUE k = t->u1.value, kr = t->u2.value, b = t->u3.value;
return params_new(f, o, r, p, k, kr, escape_Qundef(b));
}
#define new_args(f,o,r,p,t) new_args_gen(parser, (f),(o),(r),(p),(t))
static inline VALUE
new_args_tail_gen(struct parser_params *parser, VALUE k, VALUE kr, VALUE b)
{
return (VALUE)MEMO_NEW(k, kr, b);
}
#define new_args_tail(k,kr,b) new_args_tail_gen(parser, (k),(kr),(b))
#define new_defined(expr) dispatch1(defined, (expr))
static VALUE parser_heredoc_dedent(struct parser_params*,VALUE);
# define heredoc_dedent(str) parser_heredoc_dedent(parser, (str))
#define FIXME 0
#else
#define ID2VAL(id) ((VALUE)(id))
#define TOKEN2VAL(t) ID2VAL(t)
#endif /* RIPPER */
#ifndef RIPPER
# define Qnone 0
# define Qnull 0
# define ifndef_ripper(x) (x)
#else
# define Qnone Qnil
# define Qnull Qundef
# define ifndef_ripper(x)
#endif
# define rb_warn0(fmt) WARN_CALL(WARN_ARGS(fmt, 1))
# define rb_warn1(fmt,a) WARN_CALL(WARN_ARGS(fmt, 2), (a))
# define rb_warn2(fmt,a,b) WARN_CALL(WARN_ARGS(fmt, 3), (a), (b))
# define rb_warn3(fmt,a,b,c) WARN_CALL(WARN_ARGS(fmt, 4), (a), (b), (c))
# define rb_warn4(fmt,a,b,c,d) WARN_CALL(WARN_ARGS(fmt, 5), (a), (b), (c), (d))
# define rb_warning0(fmt) WARNING_CALL(WARNING_ARGS(fmt, 1))
# define rb_warning1(fmt,a) WARNING_CALL(WARNING_ARGS(fmt, 2), (a))
# define rb_warning2(fmt,a,b) WARNING_CALL(WARNING_ARGS(fmt, 3), (a), (b))
# define rb_warning3(fmt,a,b,c) WARNING_CALL(WARNING_ARGS(fmt, 4), (a), (b), (c))
# define rb_warning4(fmt,a,b,c,d) WARNING_CALL(WARNING_ARGS(fmt, 5), (a), (b), (c), (d))
# define rb_warn0L(l,fmt) WARN_CALL(WARN_ARGS_L(l, fmt, 1))
# define rb_warn1L(l,fmt,a) WARN_CALL(WARN_ARGS_L(l, fmt, 2), (a))
# define rb_warn2L(l,fmt,a,b) WARN_CALL(WARN_ARGS_L(l, fmt, 3), (a), (b))
# define rb_warn3L(l,fmt,a,b,c) WARN_CALL(WARN_ARGS_L(l, fmt, 4), (a), (b), (c))
# define rb_warn4L(l,fmt,a,b,c,d) WARN_CALL(WARN_ARGS_L(l, fmt, 5), (a), (b), (c), (d))
# define rb_warning0L(l,fmt) WARNING_CALL(WARNING_ARGS_L(l, fmt, 1))
# define rb_warning1L(l,fmt,a) WARNING_CALL(WARNING_ARGS_L(l, fmt, 2), (a))
# define rb_warning2L(l,fmt,a,b) WARNING_CALL(WARNING_ARGS_L(l, fmt, 3), (a), (b))
# define rb_warning3L(l,fmt,a,b,c) WARNING_CALL(WARNING_ARGS_L(l, fmt, 4), (a), (b), (c))
# define rb_warning4L(l,fmt,a,b,c,d) WARNING_CALL(WARNING_ARGS_L(l, fmt, 5), (a), (b), (c), (d))
#ifdef RIPPER
static ID id_warn, id_warning, id_gets;
# define WARN_S_L(s,l) STR_NEW(s,l)
# define WARN_S(s) STR_NEW2(s)
# define WARN_I(i) INT2NUM(i)
# define PRIsWARN "s"
# define WARN_ARGS(fmt,n) parser->value, id_warn, n, rb_usascii_str_new_lit(fmt)
# define WARN_ARGS_L(l,fmt,n) WARN_ARGS(fmt,n)
# define WARN_CALL rb_funcall
# define WARNING_ARGS(fmt,n) parser->value, id_warning, n, rb_usascii_str_new_lit(fmt)
# define WARNING_ARGS_L(l, fmt,n) WARNING_ARGS(fmt,n)
# define WARNING_CALL rb_funcall
static void ripper_compile_error(struct parser_params*, const char *fmt, ...);
# define compile_error ripper_compile_error
# define PARSER_ARG parser,
#else
# define WARN_S_L(s,l) s
# define WARN_S(s) s
# define WARN_I(i) i
# define PRIsWARN PRIsVALUE
# define WARN_ARGS(fmt,n) WARN_ARGS_L(ruby_sourceline,fmt,n)
# define WARN_ARGS_L(l,fmt,n) ruby_sourcefile, (l), (fmt)
# define WARN_CALL rb_compile_warn
# define WARNING_ARGS(fmt,n) WARN_ARGS(fmt,n)
# define WARNING_ARGS_L(l,fmt,n) WARN_ARGS_L(l,fmt,n)
# define WARNING_CALL rb_compile_warning
static void parser_compile_error(struct parser_params*, const char *fmt, ...);
# define compile_error parser_compile_error
# define PARSER_ARG parser,
#endif
/* Older versions of Yacc set YYMAXDEPTH to a very low value by default (150,
for instance). This is too low for Ruby to parse some files, such as
date/format.rb, therefore bump the value up to at least Bison's default. */
#ifdef OLD_YACC
#ifndef YYMAXDEPTH
#define YYMAXDEPTH 10000
#endif
#endif
static void token_info_push_gen(struct parser_params*, const char *token, size_t len);
static void token_info_pop_gen(struct parser_params*, const char *token, size_t len);
#define token_info_push(token) token_info_push_gen(parser, (token), rb_strlen_lit(token))
#define token_info_pop(token) token_info_pop_gen(parser, (token), rb_strlen_lit(token))
%}
%pure-parser
%lex-param {struct parser_params *parser}
%parse-param {struct parser_params *parser}
%union {
VALUE val;
NODE *node;
ID id;
int num;
const struct vtable *vars;
}
/*%%%*/
%token
/*%
%token <val>
%*/
keyword_class
keyword_module
keyword_def
keyword_undef
keyword_begin
keyword_rescue
keyword_ensure
keyword_end
keyword_if
keyword_unless
keyword_then
keyword_elsif
keyword_else
keyword_case
keyword_when
keyword_while
keyword_until
keyword_for
keyword_break
keyword_next
keyword_redo
keyword_retry
keyword_in
keyword_do
keyword_do_cond
keyword_do_block
keyword_do_LAMBDA
keyword_return
keyword_yield
keyword_super
keyword_self
keyword_nil
keyword_true
keyword_false
keyword_and
keyword_or
keyword_not
modifier_if
modifier_unless
modifier_while
modifier_until
modifier_rescue
keyword_alias
keyword_defined
keyword_BEGIN
keyword_END
keyword__LINE__
keyword__FILE__
keyword__ENCODING__
%token <id> tIDENTIFIER tFID tGVAR tIVAR tCONSTANT tCVAR tLABEL
%token <node> tINTEGER tFLOAT tRATIONAL tIMAGINARY tSTRING_CONTENT tCHAR
%token <node> tNTH_REF tBACK_REF
%token <num> tREGEXP_END
%type <node> singleton strings string string1 xstring regexp
%type <node> string_contents xstring_contents regexp_contents string_content
%type <node> words symbols symbol_list qwords qsymbols word_list qword_list qsym_list word
%type <node> literal numeric simple_numeric dsym cpath
%type <node> top_compstmt top_stmts top_stmt
%type <node> bodystmt compstmt stmts stmt_or_begin stmt expr arg primary command command_call method_call
%type <node> expr_value arg_value primary_value fcall
%type <node> if_tail opt_else case_body cases opt_rescue exc_list exc_var opt_ensure
%type <node> args call_args opt_call_args
%type <node> paren_args opt_paren_args args_tail opt_args_tail block_args_tail opt_block_args_tail
%type <node> command_args aref_args opt_block_arg block_arg var_ref var_lhs
%type <node> command_rhs arg_rhs
%type <node> command_asgn mrhs mrhs_arg superclass block_call block_command
%type <node> f_block_optarg f_block_opt
%type <node> f_arglist f_args f_arg f_arg_item f_optarg f_marg f_marg_list f_margs
%type <node> assoc_list assocs assoc undef_list backref string_dvar for_var
%type <node> block_param opt_block_param block_param_def f_opt
%type <node> f_kwarg f_kw f_block_kwarg f_block_kw
%type <node> bv_decls opt_bv_decl bvar
%type <node> lambda f_larglist lambda_body brace_body do_body
%type <node> brace_block cmd_brace_block do_block lhs none fitem
%type <node> mlhs mlhs_head mlhs_basic mlhs_item mlhs_node mlhs_post mlhs_inner
%type <id> fsym keyword_variable user_variable sym symbol operation operation2 operation3
%type <id> cname fname op f_rest_arg f_block_arg opt_f_block_arg f_norm_arg f_bad_arg
%type <id> f_kwrest f_label f_arg_asgn call_op call_op2
/*%%%*/
/*%
%type <val> program reswords then do dot_or_colon
%*/
%token END_OF_INPUT 0 "end-of-input"
%token tUPLUS RUBY_TOKEN(UPLUS) "unary+"
%token tUMINUS RUBY_TOKEN(UMINUS) "unary-"
%token tPOW RUBY_TOKEN(POW) "**"
%token tCMP RUBY_TOKEN(CMP) "<=>"
%token tEQ RUBY_TOKEN(EQ) "=="
%token tEQQ RUBY_TOKEN(EQQ) "==="
%token tNEQ RUBY_TOKEN(NEQ) "!="
%token tGEQ RUBY_TOKEN(GEQ) ">="
%token tLEQ RUBY_TOKEN(LEQ) "<="
%token tANDOP RUBY_TOKEN(ANDOP) "&&"
%token tOROP RUBY_TOKEN(OROP) "||"
%token tMATCH RUBY_TOKEN(MATCH) "=~"
%token tNMATCH RUBY_TOKEN(NMATCH) "!~"
%token tDOT2 RUBY_TOKEN(DOT2) ".."
%token tDOT3 RUBY_TOKEN(DOT3) "..."
%token tAREF RUBY_TOKEN(AREF) "[]"
%token tASET RUBY_TOKEN(ASET) "[]="
%token tLSHFT RUBY_TOKEN(LSHFT) "<<"
%token tRSHFT RUBY_TOKEN(RSHFT) ">>"
%token tANDDOT RUBY_TOKEN(ANDDOT) "&."
%token tCOLON2 RUBY_TOKEN(COLON2) "::"
%token tCOLON3 ":: at EXPR_BEG"
%token <id> tOP_ASGN /* +=, -= etc. */
%token tASSOC "=>"
%token tLPAREN "("
%token tLPAREN_ARG "( arg"
%token tRPAREN ")"
%token tLBRACK "["
%token tLBRACE "{"
%token tLBRACE_ARG "{ arg"
%token tSTAR "*"
%token tDSTAR "**arg"
%token tAMPER "&"
%token tLAMBDA "->"
%token tSYMBEG tSTRING_BEG tXSTRING_BEG tREGEXP_BEG tWORDS_BEG tQWORDS_BEG tSYMBOLS_BEG tQSYMBOLS_BEG
%token tSTRING_DBEG tSTRING_DEND tSTRING_DVAR tSTRING_END tLAMBEG tLABEL_END
/*
* precedence table
*/
%nonassoc tLOWEST
%nonassoc tLBRACE_ARG
%nonassoc modifier_if modifier_unless modifier_while modifier_until
%left keyword_or keyword_and
%right keyword_not
%nonassoc keyword_defined
%right '=' tOP_ASGN
%left modifier_rescue
%right '?' ':'
%nonassoc tDOT2 tDOT3
%left tOROP
%left tANDOP
%nonassoc tCMP tEQ tEQQ tNEQ tMATCH tNMATCH
%left '>' tGEQ '<' tLEQ
%left '|' '^'
%left '&'
%left tLSHFT tRSHFT
%left '+' '-'
%left '*' '/' '%'
%right tUMINUS_NUM tUMINUS
%right tPOW
%right '!' '~' tUPLUS
%token tLAST_TOKEN
%%
program : {
SET_LEX_STATE(EXPR_BEG);
/*%%%*/
local_push(compile_for_eval || in_main);
/*%
local_push(0);
%*/
}
top_compstmt
{
/*%%%*/
if ($2 && !compile_for_eval) {
/* last expression should not be void */
if (nd_type($2) != NODE_BLOCK) void_expr($2);
else {
NODE *node = $2;
while (node->nd_next) {
node = node->nd_next;
}
void_expr(node->nd_head);
}
}
ruby_eval_tree = NEW_SCOPE(0, block_append(ruby_eval_tree, $2));
/*%
$$ = $2;
parser->result = dispatch1(program, $$);
%*/
local_pop();
}
;
top_compstmt : top_stmts opt_terms
{
/*%%%*/
void_stmts($1);
/*%
%*/
$$ = $1;
}
;
top_stmts : none
{
/*%%%*/
$$ = NEW_BEGIN(0);
/*%
$$ = dispatch2(stmts_add, dispatch0(stmts_new),
dispatch0(void_stmt));
%*/
}
| top_stmt
{
/*%%%*/
$$ = newline_node($1);
/*%
$$ = dispatch2(stmts_add, dispatch0(stmts_new), $1);
%*/
}
| top_stmts terms top_stmt
{
/*%%%*/
$$ = block_append($1, newline_node($3));
/*%
$$ = dispatch2(stmts_add, $1, $3);
%*/
}
| error top_stmt
{
$$ = remove_begin($2);
}
;
top_stmt : stmt
| keyword_BEGIN
{
/*%%%*/
/* local_push(0); */
/*%
%*/
}
'{' top_compstmt '}'
{
/*%%%*/
ruby_eval_tree_begin = block_append(ruby_eval_tree_begin,
$4);
/* NEW_PREEXE($4)); */
/* local_pop(); */
$$ = NEW_BEGIN(0);
/*%
$$ = dispatch1(BEGIN, $4);
%*/
}
;
bodystmt : compstmt
opt_rescue
opt_else
opt_ensure
{
/*%%%*/
$$ = $1;
if ($2) {
$$ = NEW_RESCUE($1, $2, $3);
}
else if ($3) {
rb_warn0("else without rescue is useless");
$$ = block_append($$, $3);
}
if ($4) {
if ($$) {
$$ = NEW_ENSURE($$, $4);
}
else {
$$ = block_append($4, NEW_NIL());
}
}
fixpos($$, $1);
/*%
$$ = dispatch4(bodystmt,
escape_Qundef($1),
escape_Qundef($2),
escape_Qundef($3),
escape_Qundef($4));
%*/
}
;
compstmt : stmts opt_terms
{
/*%%%*/
void_stmts($1);
/*%
%*/
$$ = $1;
}
;
stmts : none
{
/*%%%*/
$$ = NEW_BEGIN(0);
/*%
$$ = dispatch2(stmts_add, dispatch0(stmts_new),
dispatch0(void_stmt));
%*/
}
| stmt_or_begin
{
/*%%%*/
$$ = newline_node($1);
/*%
$$ = dispatch2(stmts_add, dispatch0(stmts_new), $1);
%*/
}
| stmts terms stmt_or_begin
{
/*%%%*/
$$ = block_append($1, newline_node($3));
/*%
$$ = dispatch2(stmts_add, $1, $3);
%*/
}
| error stmt
{
$$ = remove_begin($2);
}
;
stmt_or_begin : stmt
{
$$ = $1;
}
| keyword_BEGIN
{
yyerror("BEGIN is permitted only at toplevel");
/*%%%*/
/* local_push(0); */
/*%
%*/
}
'{' top_compstmt '}'
{
/*%%%*/
ruby_eval_tree_begin = block_append(ruby_eval_tree_begin,
$4);
/* NEW_PREEXE($4)); */
/* local_pop(); */
$$ = NEW_BEGIN(0);
/*%
$$ = dispatch1(BEGIN, $4);
%*/
}
stmt : keyword_alias fitem {SET_LEX_STATE(EXPR_FNAME|EXPR_FITEM);} fitem
{
/*%%%*/
$$ = NEW_ALIAS($2, $4);
/*%
$$ = dispatch2(alias, $2, $4);
%*/
}
| keyword_alias tGVAR tGVAR
{
/*%%%*/
$$ = NEW_VALIAS($2, $3);
/*%
$$ = dispatch2(var_alias, $2, $3);
%*/
}
| keyword_alias tGVAR tBACK_REF
{
/*%%%*/
char buf[2];
buf[0] = '$';
buf[1] = (char)$3->nd_nth;
$$ = NEW_VALIAS($2, rb_intern2(buf, 2));
/*%
$$ = dispatch2(var_alias, $2, $3);
%*/
}
| keyword_alias tGVAR tNTH_REF
{
/*%%%*/
yyerror("can't make alias for the number variables");
$$ = NEW_BEGIN(0);
/*%
$$ = dispatch2(var_alias, $2, $3);
$$ = dispatch1(alias_error, $$);
ripper_error();
%*/
}
| keyword_undef undef_list
{
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(undef, $2);
%*/
}
| stmt modifier_if expr_value
{
/*%%%*/
$$ = new_if($3, remove_begin($1), 0);
fixpos($$, $3);
/*%
$$ = dispatch2(if_mod, $3, $1);
%*/
}
| stmt modifier_unless expr_value
{
/*%%%*/
$$ = new_unless($3, remove_begin($1), 0);
fixpos($$, $3);
/*%
$$ = dispatch2(unless_mod, $3, $1);
%*/
}
| stmt modifier_while expr_value
{
/*%%%*/
if ($1 && nd_type($1) == NODE_BEGIN) {
$$ = NEW_WHILE(cond($3), $1->nd_body, 0);
}
else {
$$ = NEW_WHILE(cond($3), $1, 1);
}
/*%
$$ = dispatch2(while_mod, $3, $1);
%*/
}
| stmt modifier_until expr_value
{
/*%%%*/
if ($1 && nd_type($1) == NODE_BEGIN) {
$$ = NEW_UNTIL(cond($3), $1->nd_body, 0);
}
else {
$$ = NEW_UNTIL(cond($3), $1, 1);
}
/*%
$$ = dispatch2(until_mod, $3, $1);
%*/
}
| stmt modifier_rescue stmt
{
/*%%%*/
NODE *resq = NEW_RESBODY(0, remove_begin($3), 0);
$$ = NEW_RESCUE(remove_begin($1), resq, 0);
/*%
$$ = dispatch2(rescue_mod, $1, $3);
%*/
}
| keyword_END '{' compstmt '}'
{
if (in_def || in_single) {
rb_warn0("END in method; use at_exit");
}
/*%%%*/
$$ = NEW_POSTEXE(NEW_NODE(
NODE_SCOPE, 0 /* tbl */, $3 /* body */, 0 /* args */));
/*%
$$ = dispatch1(END, $3);
%*/
}
| command_asgn
| mlhs '=' command_call
{
/*%%%*/
value_expr($3);
$1->nd_value = $3;
$$ = $1;
/*%
$$ = dispatch2(massign, $1, $3);
%*/
}
| lhs '=' mrhs
{
value_expr($3);
$$ = node_assign($1, $3);
}
| mlhs '=' mrhs_arg
{
/*%%%*/
$1->nd_value = $3;
$$ = $1;
/*%
$$ = dispatch2(massign, $1, $3);
%*/
}
| expr
;
command_asgn : lhs '=' command_rhs
{
value_expr($3);
$$ = node_assign($1, $3);
}
| var_lhs tOP_ASGN command_rhs
{
value_expr($3);
$$ = new_op_assign($1, $2, $3);
}
| primary_value '[' opt_call_args rbracket tOP_ASGN command_rhs
{
/*%%%*/
NODE *args;
value_expr($6);
if (!$3) $3 = NEW_ZARRAY();
args = arg_concat($3, $6);
if ($5 == tOROP) {
$5 = 0;
}
else if ($5 == tANDOP) {
$5 = 1;
}
$$ = NEW_OP_ASGN1($1, $5, args);
fixpos($$, $1);
/*%
$$ = dispatch2(aref_field, $1, escape_Qundef($3));
$$ = dispatch3(opassign, $$, $5, $6);
%*/
}
| primary_value call_op tIDENTIFIER tOP_ASGN command_rhs
{
value_expr($5);
$$ = new_attr_op_assign($1, $2, $3, $4, $5);
}
| primary_value call_op tCONSTANT tOP_ASGN command_rhs
{
value_expr($5);
$$ = new_attr_op_assign($1, $2, $3, $4, $5);
}
| primary_value tCOLON2 tCONSTANT tOP_ASGN command_rhs
{
$$ = const_path_field($1, $3);
$$ = new_const_op_assign($$, $4, $5);
}
| primary_value tCOLON2 tIDENTIFIER tOP_ASGN command_rhs
{
value_expr($5);
$$ = new_attr_op_assign($1, ID2VAL(idCOLON2), $3, $4, $5);
}
| backref tOP_ASGN command_rhs
{
$1 = var_field($1);
$$ = backref_assign_error($1, node_assign($1, $3));
}
;
command_rhs : command_call %prec tOP_ASGN
{
/*%%%*/
value_expr($1);
$$ = $1;
/*%
%*/
}
| command_call modifier_rescue stmt
{
/*%%%*/
value_expr($1);
$$ = NEW_RESCUE($1, NEW_RESBODY(0, remove_begin($3), 0), 0);
/*%
$$ = dispatch2(rescue_mod, $1, $3);
%*/
}
| command_asgn
;
expr : command_call
| expr keyword_and expr
{
$$ = logop(tAND, $1, $3);
}
| expr keyword_or expr
{
$$ = logop(tOR, $1, $3);
}
| keyword_not opt_nl expr
{
$$ = call_uni_op(method_cond($3), METHOD_NOT);
}
| '!' command_call
{
$$ = call_uni_op(method_cond($2), '!');
}
| arg
;
expr_value : expr
{
/*%%%*/
value_expr($1);
$$ = $1;
if (!$$) $$ = NEW_NIL();
/*%
$$ = $1;
%*/
}
;
command_call : command
| block_command
;
block_command : block_call
| block_call call_op2 operation2 command_args
{
$$ = new_qcall($2, $1, $3, $4);
}
;
cmd_brace_block : tLBRACE_ARG
{
/*%%%*/
$<num>$ = ruby_sourceline;
/*%
%*/
}
brace_body '}'
{
$$ = $3;
/*%%%*/
nd_set_line($$, $<num>2);
/*% %*/
}
;
fcall : operation
{
/*%%%*/
$$ = NEW_FCALL($1, 0);
nd_set_line($$, tokline);
/*%
%*/
}
;
command : fcall command_args %prec tLOWEST
{
/*%%%*/
$$ = $1;
$$->nd_args = $2;
/*%
$$ = dispatch2(command, $1, $2);
%*/
}
| fcall command_args cmd_brace_block
{
block_dup_check($2,$3);
$$ = new_command($1, $2);
$$ = method_add_block($$, $3);
fixpos($$, $1);
}
| primary_value call_op operation2 command_args %prec tLOWEST
{
$$ = new_command_qcall($2, $1, $3, $4);
fixpos($$, $1);
}
| primary_value call_op operation2 command_args cmd_brace_block
{
block_dup_check($4,$5);
$$ = new_command_qcall($2, $1, $3, $4);
$$ = method_add_block($$, $5);
fixpos($$, $1);
}
| primary_value tCOLON2 operation2 command_args %prec tLOWEST
{
$$ = new_command_qcall(ID2VAL(idCOLON2), $1, $3, $4);
fixpos($$, $1);
}
| primary_value tCOLON2 operation2 command_args cmd_brace_block
{
block_dup_check($4,$5);
$$ = new_command_qcall(ID2VAL(idCOLON2), $1, $3, $4);
$$ = method_add_block($$, $5);
fixpos($$, $1);
}
| keyword_super command_args
{
/*%%%*/
$$ = NEW_SUPER($2);
fixpos($$, $2);
/*%
$$ = dispatch1(super, $2);
%*/
}
| keyword_yield command_args
{
/*%%%*/
$$ = new_yield($2);
fixpos($$, $2);
/*%
$$ = dispatch1(yield, $2);
%*/
}
| keyword_return call_args
{
/*%%%*/
$$ = NEW_RETURN(ret_args($2));
/*%
$$ = dispatch1(return, $2);
%*/
}
| keyword_break call_args
{
/*%%%*/
$$ = NEW_BREAK(ret_args($2));
/*%
$$ = dispatch1(break, $2);
%*/
}
| keyword_next call_args
{
/*%%%*/
$$ = NEW_NEXT(ret_args($2));
/*%
$$ = dispatch1(next, $2);
%*/
}
;
mlhs : mlhs_basic
| tLPAREN mlhs_inner rparen
{
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(mlhs_paren, $2);
%*/
}
;
mlhs_inner : mlhs_basic
| tLPAREN mlhs_inner rparen
{
/*%%%*/
$$ = NEW_MASGN(NEW_LIST($2), 0);
/*%
$$ = dispatch1(mlhs_paren, $2);
%*/
}
;
mlhs_basic : mlhs_head
{
/*%%%*/
$$ = NEW_MASGN($1, 0);
/*%
$$ = $1;
%*/
}
| mlhs_head mlhs_item
{
/*%%%*/
$$ = NEW_MASGN(list_append($1,$2), 0);
/*%
$$ = mlhs_add($1, $2);
%*/
}
| mlhs_head tSTAR mlhs_node
{
/*%%%*/
$$ = NEW_MASGN($1, $3);
/*%
$$ = mlhs_add_star($1, $3);
%*/
}
| mlhs_head tSTAR mlhs_node ',' mlhs_post
{
/*%%%*/
$$ = NEW_MASGN($1, NEW_POSTARG($3,$5));
/*%
$1 = mlhs_add_star($1, $3);
$$ = mlhs_add($1, $5);
%*/
}
| mlhs_head tSTAR
{
/*%%%*/
$$ = NEW_MASGN($1, -1);
/*%
$$ = mlhs_add_star($1, Qnil);
%*/
}
| mlhs_head tSTAR ',' mlhs_post
{
/*%%%*/
$$ = NEW_MASGN($1, NEW_POSTARG(-1, $4));
/*%
$1 = mlhs_add_star($1, Qnil);
$$ = mlhs_add($1, $4);
%*/
}
| tSTAR mlhs_node
{
/*%%%*/
$$ = NEW_MASGN(0, $2);
/*%
$$ = mlhs_add_star(mlhs_new(), $2);
%*/
}
| tSTAR mlhs_node ',' mlhs_post
{
/*%%%*/
$$ = NEW_MASGN(0, NEW_POSTARG($2,$4));
/*%
$2 = mlhs_add_star(mlhs_new(), $2);
$$ = mlhs_add($2, $4);
%*/
}
| tSTAR
{
/*%%%*/
$$ = NEW_MASGN(0, -1);
/*%
$$ = mlhs_add_star(mlhs_new(), Qnil);
%*/
}
| tSTAR ',' mlhs_post
{
/*%%%*/
$$ = NEW_MASGN(0, NEW_POSTARG(-1, $3));
/*%
$$ = mlhs_add_star(mlhs_new(), Qnil);
$$ = mlhs_add($$, $3);
%*/
}
;
mlhs_item : mlhs_node
| tLPAREN mlhs_inner rparen
{
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(mlhs_paren, $2);
%*/
}
;
mlhs_head : mlhs_item ','
{
/*%%%*/
$$ = NEW_LIST($1);
/*%
$$ = mlhs_add(mlhs_new(), $1);
%*/
}
| mlhs_head mlhs_item ','
{
/*%%%*/
$$ = list_append($1, $2);
/*%
$$ = mlhs_add($1, $2);
%*/
}
;
mlhs_post : mlhs_item
{
/*%%%*/
$$ = NEW_LIST($1);
/*%
$$ = mlhs_add(mlhs_new(), $1);
%*/
}
| mlhs_post ',' mlhs_item
{
/*%%%*/
$$ = list_append($1, $3);
/*%
$$ = mlhs_add($1, $3);
%*/
}
;
mlhs_node : user_variable
{
$$ = assignable($1, 0);
}
| keyword_variable
{
$$ = assignable($1, 0);
}
| primary_value '[' opt_call_args rbracket
{
/*%%%*/
$$ = aryset($1, $3);
/*%
$$ = dispatch2(aref_field, $1, escape_Qundef($3));
%*/
}
| primary_value call_op tIDENTIFIER
{
/*%%%*/
$$ = attrset($1, $2, $3);
/*%
$$ = dispatch3(field, $1, $2, $3);
%*/
}
| primary_value tCOLON2 tIDENTIFIER
{
/*%%%*/
$$ = attrset($1, idCOLON2, $3);
/*%
$$ = dispatch2(const_path_field, $1, $3);
%*/
}
| primary_value call_op tCONSTANT
{
/*%%%*/
$$ = attrset($1, $2, $3);
/*%
$$ = dispatch3(field, $1, $2, $3);
%*/
}
| primary_value tCOLON2 tCONSTANT
{
$$ = const_decl(const_path_field($1, $3));
}
| tCOLON3 tCONSTANT
{
$$ = const_decl(top_const_field($2));
}
| backref
{
$1 = var_field($1);
$$ = backref_assign_error($1, $1);
}
;
lhs : user_variable
{
$$ = assignable($1, 0);
/*%%%*/
if (!$$) $$ = NEW_BEGIN(0);
/*%
$$ = dispatch1(var_field, $$);
%*/
}
| keyword_variable
{
$$ = assignable($1, 0);
/*%%%*/
if (!$$) $$ = NEW_BEGIN(0);
/*%
$$ = dispatch1(var_field, $$);
%*/
}
| primary_value '[' opt_call_args rbracket
{
/*%%%*/
$$ = aryset($1, $3);
/*%
$$ = dispatch2(aref_field, $1, escape_Qundef($3));
%*/
}
| primary_value call_op tIDENTIFIER
{
/*%%%*/
$$ = attrset($1, $2, $3);
/*%
$$ = dispatch3(field, $1, $2, $3);
%*/
}
| primary_value tCOLON2 tIDENTIFIER
{
/*%%%*/
$$ = attrset($1, idCOLON2, $3);
/*%
$$ = dispatch3(field, $1, ID2VAL(idCOLON2), $3);
%*/
}
| primary_value call_op tCONSTANT
{
/*%%%*/
$$ = attrset($1, $2, $3);
/*%
$$ = dispatch3(field, $1, $2, $3);
%*/
}
| primary_value tCOLON2 tCONSTANT
{
$$ = const_decl(const_path_field($1, $3));
}
| tCOLON3 tCONSTANT
{
$$ = const_decl(top_const_field($2));
}
| backref
{
$1 = var_field($1);
$$ = backref_assign_error($1, $1);
}
;
cname : tIDENTIFIER
{
/*%%%*/
yyerror("class/module name must be CONSTANT");
/*%
$$ = dispatch1(class_name_error, $1);
ripper_error();
%*/
}
| tCONSTANT
;
cpath : tCOLON3 cname
{
/*%%%*/
$$ = NEW_COLON3($2);
/*%
$$ = dispatch1(top_const_ref, $2);
%*/
}
| cname
{
/*%%%*/
$$ = NEW_COLON2(0, $$);
/*%
$$ = dispatch1(const_ref, $1);
%*/
}
| primary_value tCOLON2 cname
{
/*%%%*/
$$ = NEW_COLON2($1, $3);
/*%
$$ = dispatch2(const_path_ref, $1, $3);
%*/
}
;
fname : tIDENTIFIER
| tCONSTANT
| tFID
| op
{
SET_LEX_STATE(EXPR_ENDFN);
$$ = $1;
}
| reswords
{
SET_LEX_STATE(EXPR_ENDFN);
/*%%%*/
$$ = $<id>1;
/*%
$$ = $1;
%*/
}
;
fsym : fname
| symbol
;
fitem : fsym
{
/*%%%*/
$$ = NEW_LIT(ID2SYM($1));
/*%
$$ = dispatch1(symbol_literal, $1);
%*/
}
| dsym
;
undef_list : fitem
{
/*%%%*/
$$ = NEW_UNDEF($1);
/*%
$$ = rb_ary_new3(1, $1);
%*/
}
| undef_list ',' {SET_LEX_STATE(EXPR_FNAME|EXPR_FITEM);} fitem
{
/*%%%*/
$$ = block_append($1, NEW_UNDEF($4));
/*%
rb_ary_push($1, $4);
%*/
}
;
op : '|' { ifndef_ripper($$ = '|'); }
| '^' { ifndef_ripper($$ = '^'); }
| '&' { ifndef_ripper($$ = '&'); }
| tCMP { ifndef_ripper($$ = tCMP); }
| tEQ { ifndef_ripper($$ = tEQ); }
| tEQQ { ifndef_ripper($$ = tEQQ); }
| tMATCH { ifndef_ripper($$ = tMATCH); }
| tNMATCH { ifndef_ripper($$ = tNMATCH); }
| '>' { ifndef_ripper($$ = '>'); }
| tGEQ { ifndef_ripper($$ = tGEQ); }
| '<' { ifndef_ripper($$ = '<'); }
| tLEQ { ifndef_ripper($$ = tLEQ); }
| tNEQ { ifndef_ripper($$ = tNEQ); }
| tLSHFT { ifndef_ripper($$ = tLSHFT); }
| tRSHFT { ifndef_ripper($$ = tRSHFT); }
| '+' { ifndef_ripper($$ = '+'); }
| '-' { ifndef_ripper($$ = '-'); }
| '*' { ifndef_ripper($$ = '*'); }
| tSTAR { ifndef_ripper($$ = '*'); }
| '/' { ifndef_ripper($$ = '/'); }
| '%' { ifndef_ripper($$ = '%'); }
| tPOW { ifndef_ripper($$ = tPOW); }
| tDSTAR { ifndef_ripper($$ = tDSTAR); }
| '!' { ifndef_ripper($$ = '!'); }
| '~' { ifndef_ripper($$ = '~'); }
| tUPLUS { ifndef_ripper($$ = tUPLUS); }
| tUMINUS { ifndef_ripper($$ = tUMINUS); }
| tAREF { ifndef_ripper($$ = tAREF); }
| tASET { ifndef_ripper($$ = tASET); }
| '`' { ifndef_ripper($$ = '`'); }
;
reswords : keyword__LINE__ | keyword__FILE__ | keyword__ENCODING__
| keyword_BEGIN | keyword_END
| keyword_alias | keyword_and | keyword_begin
| keyword_break | keyword_case | keyword_class | keyword_def
| keyword_defined | keyword_do | keyword_else | keyword_elsif
| keyword_end | keyword_ensure | keyword_false
| keyword_for | keyword_in | keyword_module | keyword_next
| keyword_nil | keyword_not | keyword_or | keyword_redo
| keyword_rescue | keyword_retry | keyword_return | keyword_self
| keyword_super | keyword_then | keyword_true | keyword_undef
| keyword_when | keyword_yield | keyword_if | keyword_unless
| keyword_while | keyword_until
;
arg : lhs '=' arg_rhs
{
$$ = node_assign($1, $3);
}
| var_lhs tOP_ASGN arg_rhs
{
$$ = new_op_assign($1, $2, $3);
}
| primary_value '[' opt_call_args rbracket tOP_ASGN arg_rhs
{
/*%%%*/
NODE *args;
value_expr($6);
if (!$3) $3 = NEW_ZARRAY();
if (nd_type($3) == NODE_BLOCK_PASS) {
args = NEW_ARGSCAT($3, $6);
}
else {
args = arg_concat($3, $6);
}
if ($5 == tOROP) {
$5 = 0;
}
else if ($5 == tANDOP) {
$5 = 1;
}
$$ = NEW_OP_ASGN1($1, $5, args);
fixpos($$, $1);
/*%
$1 = dispatch2(aref_field, $1, escape_Qundef($3));
$$ = dispatch3(opassign, $1, $5, $6);
%*/
}
| primary_value call_op tIDENTIFIER tOP_ASGN arg_rhs
{
value_expr($5);
$$ = new_attr_op_assign($1, $2, $3, $4, $5);
}
| primary_value call_op tCONSTANT tOP_ASGN arg_rhs
{
value_expr($5);
$$ = new_attr_op_assign($1, $2, $3, $4, $5);
}
| primary_value tCOLON2 tIDENTIFIER tOP_ASGN arg_rhs
{
value_expr($5);
$$ = new_attr_op_assign($1, ID2VAL(idCOLON2), $3, $4, $5);
}
| primary_value tCOLON2 tCONSTANT tOP_ASGN arg_rhs
{
$$ = const_path_field($1, $3);
$$ = new_const_op_assign($$, $4, $5);
}
| tCOLON3 tCONSTANT tOP_ASGN arg_rhs
{
$$ = top_const_field($2);
$$ = new_const_op_assign($$, $3, $4);
}
| backref tOP_ASGN arg_rhs
{
$1 = var_field($1);
$$ = backref_assign_error($1, new_op_assign($1, $2, $3));
}
| arg tDOT2 arg
{
/*%%%*/
value_expr($1);
value_expr($3);
$$ = NEW_DOT2($1, $3);
/*%
$$ = dispatch2(dot2, $1, $3);
%*/
}
| arg tDOT3 arg
{
/*%%%*/
value_expr($1);
value_expr($3);
$$ = NEW_DOT3($1, $3);
/*%
$$ = dispatch2(dot3, $1, $3);
%*/
}
| arg '+' arg
{
$$ = call_bin_op($1, '+', $3);
}
| arg '-' arg
{
$$ = call_bin_op($1, '-', $3);
}
| arg '*' arg
{
$$ = call_bin_op($1, '*', $3);
}
| arg '/' arg
{
$$ = call_bin_op($1, '/', $3);
}
| arg '%' arg
{
$$ = call_bin_op($1, '%', $3);
}
| arg tPOW arg
{
$$ = call_bin_op($1, idPow, $3);
}
| tUMINUS_NUM simple_numeric tPOW arg
{
$$ = call_uni_op(call_bin_op($2, idPow, $4), idUMinus);
}
| tUPLUS arg
{
$$ = call_uni_op($2, idUPlus);
}
| tUMINUS arg
{
$$ = call_uni_op($2, idUMinus);
}
| arg '|' arg
{
$$ = call_bin_op($1, '|', $3);
}
| arg '^' arg
{
$$ = call_bin_op($1, '^', $3);
}
| arg '&' arg
{
$$ = call_bin_op($1, '&', $3);
}
| arg tCMP arg
{
$$ = call_bin_op($1, idCmp, $3);
}
| arg '>' arg
{
$$ = call_bin_op($1, '>', $3);
}
| arg tGEQ arg
{
$$ = call_bin_op($1, TOKEN2ID((enum ruby_method_ids)tGEQ), $3);
}
| arg '<' arg
{
$$ = call_bin_op($1, '<', $3);
}
| arg tLEQ arg
{
$$ = call_bin_op($1, idLE, $3);
}
| arg tEQ arg
{
$$ = call_bin_op($1, idEq, $3);
}
| arg tEQQ arg
{
$$ = call_bin_op($1, idEqq, $3);
}
| arg tNEQ arg
{
$$ = call_bin_op($1, idNeq, $3);
}
| arg tMATCH arg
{
$$ = match_op($1, $3);
}
| arg tNMATCH arg
{
$$ = call_bin_op($1, idNeqTilde, $3);
}
| '!' arg
{
$$ = call_uni_op(method_cond($2), '!');
}
| '~' arg
{
$$ = call_uni_op($2, '~');
}
| arg tLSHFT arg
{
$$ = call_bin_op($1, idLTLT, $3);
}
| arg tRSHFT arg
{
$$ = call_bin_op($1, idGTGT, $3);
}
| arg tANDOP arg
{
$$ = logop((enum ruby_method_ids)tANDOP, $1, $3);
}
| arg tOROP arg
{
$$ = logop((enum ruby_method_ids)tOROP, $1, $3);
}
| keyword_defined opt_nl {in_defined = 1;} arg
{
in_defined = 0;
/*%%%*/
$$ = new_defined($4);
/*%
$$ = dispatch1(defined, $4);
%*/
}
| arg '?' arg opt_nl ':' arg
{
/*%%%*/
value_expr($1);
$$ = new_if($1, $3, $6);
fixpos($$, $1);
/*%
$$ = dispatch3(ifop, $1, $3, $6);
%*/
}
| primary
{
$$ = $1;
}
;
arg_value : arg
{
/*%%%*/
value_expr($1);
$$ = $1;
if (!$$) $$ = NEW_NIL();
/*%
$$ = $1;
%*/
}
;
aref_args : none
| args trailer
{
$$ = $1;
}
| args ',' assocs trailer
{
/*%%%*/
$$ = $3 ? arg_append($1, new_hash($3)) : $1;
/*%
$$ = arg_add_assocs($1, $3);
%*/
}
| assocs trailer
{
/*%%%*/
$$ = $1 ? NEW_LIST(new_hash($1)) : 0;
/*%
$$ = arg_add_assocs(arg_new(), $1);
%*/
}
;
arg_rhs : arg %prec tOP_ASGN
{
/*%%%*/
value_expr($1);
$$ = $1;
/*%
%*/
}
| arg modifier_rescue arg
{
/*%%%*/
value_expr($1);
$$ = NEW_RESCUE($1, NEW_RESBODY(0, remove_begin($3), 0), 0);
/*%
$$ = dispatch2(rescue_mod, $1, $3);
%*/
}
;
paren_args : '(' opt_call_args rparen
{
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(arg_paren, escape_Qundef($2));
%*/
}
;
opt_paren_args : none
| paren_args
;
opt_call_args : none
| call_args
| args ','
{
$$ = $1;
}
| args ',' assocs ','
{
/*%%%*/
$$ = $3 ? arg_append($1, new_hash($3)) : $1;
/*%
$$ = arg_add_assocs($1, $3);
%*/
}
| assocs ','
{
/*%%%*/
$$ = $1 ? NEW_LIST(new_hash($1)) : 0;
/*%
$$ = arg_add_assocs(arg_new(), $1);
%*/
}
;
call_args : command
{
/*%%%*/
value_expr($1);
$$ = NEW_LIST($1);
/*%
$$ = arg_add(arg_new(), $1);
%*/
}
| args opt_block_arg
{
/*%%%*/
$$ = arg_blk_pass($1, $2);
/*%
$$ = arg_add_optblock($1, $2);
%*/
}
| assocs opt_block_arg
{
/*%%%*/
$$ = NEW_LIST($1 ? new_hash($1) : 0);
$$ = arg_blk_pass($$, $2);
/*%
$$ = arg_add_assocs(arg_new(), $1);
$$ = arg_add_optblock($$, $2);
%*/
}
| args ',' assocs opt_block_arg
{
/*%%%*/
$$ = $3 ? arg_append($1, new_hash($3)) : $1;
$$ = arg_blk_pass($$, $4);
/*%
$$ = arg_add_optblock(arg_add_assocs($1, $3), $4);
%*/
}
| block_arg
/*%c%*/
/*%c
{
$$ = arg_add_block(arg_new(), $1);
}
%*/
;
command_args : {
$<val>$ = cmdarg_stack;
CMDARG_PUSH(1);
}
call_args
{
/* CMDARG_POP() */
CMDARG_SET($<val>1);
$$ = $2;
}
;
block_arg : tAMPER arg_value
{
/*%%%*/
$$ = NEW_BLOCK_PASS($2);
/*%
$$ = $2;
%*/
}
;
opt_block_arg : ',' block_arg
{
$$ = $2;
}
| none
{
$$ = 0;
}
;
args : arg_value
{
/*%%%*/
$$ = NEW_LIST($1);
/*%
$$ = arg_add(arg_new(), $1);
%*/
}
| tSTAR arg_value
{
/*%%%*/
$$ = NEW_SPLAT($2);
/*%
$$ = arg_add_star(arg_new(), $2);
%*/
}
| args ',' arg_value
{
/*%%%*/
NODE *n1;
if ((n1 = splat_array($1)) != 0) {
$$ = list_append(n1, $3);
}
else {
$$ = arg_append($1, $3);
}
/*%
$$ = arg_add($1, $3);
%*/
}
| args ',' tSTAR arg_value
{
/*%%%*/
NODE *n1;
if ((nd_type($4) == NODE_ARRAY) && (n1 = splat_array($1)) != 0) {
$$ = list_concat(n1, $4);
}
else {
$$ = arg_concat($1, $4);
}
/*%
$$ = arg_add_star($1, $4);
%*/
}
;
mrhs_arg : mrhs
| arg_value
;
mrhs : args ',' arg_value
{
/*%%%*/
NODE *n1;
if ((n1 = splat_array($1)) != 0) {
$$ = list_append(n1, $3);
}
else {
$$ = arg_append($1, $3);
}
/*%
$$ = mrhs_add(args2mrhs($1), $3);
%*/
}
| args ',' tSTAR arg_value
{
/*%%%*/
NODE *n1;
if (nd_type($4) == NODE_ARRAY &&
(n1 = splat_array($1)) != 0) {
$$ = list_concat(n1, $4);
}
else {
$$ = arg_concat($1, $4);
}
/*%
$$ = mrhs_add_star(args2mrhs($1), $4);
%*/
}
| tSTAR arg_value
{
/*%%%*/
$$ = NEW_SPLAT($2);
/*%
$$ = mrhs_add_star(mrhs_new(), $2);
%*/
}
;
primary : literal
| strings
| xstring
| regexp
| words
| qwords
| symbols
| qsymbols
| var_ref
| backref
| tFID
{
/*%%%*/
$$ = NEW_FCALL($1, 0);
/*%
$$ = method_arg(dispatch1(fcall, $1), arg_new());
%*/
}
| k_begin
{
$<val>1 = cmdarg_stack;
CMDARG_SET(0);
/*%%%*/
$<num>$ = ruby_sourceline;
/*%
%*/
}
bodystmt
k_end
{
CMDARG_SET($<val>1);
/*%%%*/
if ($3 == NULL) {
$$ = NEW_NIL();
}
else {
if (nd_type($3) == NODE_RESCUE ||
nd_type($3) == NODE_ENSURE)
nd_set_line($3, $<num>2);
$$ = NEW_BEGIN($3);
}
nd_set_line($$, $<num>2);
/*%
$$ = dispatch1(begin, $3);
%*/
}
| tLPAREN_ARG {SET_LEX_STATE(EXPR_ENDARG);} rparen
{
/*%%%*/
$$ = 0;
/*%
$$ = dispatch1(paren, 0);
%*/
}
| tLPAREN_ARG
{
$<val>1 = cmdarg_stack;
CMDARG_SET(0);
}
stmt {SET_LEX_STATE(EXPR_ENDARG);} rparen
{
CMDARG_SET($<val>1);
/*%%%*/
$$ = $3;
/*%
$$ = dispatch1(paren, $3);
%*/
}
| tLPAREN compstmt ')'
{
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(paren, $2);
%*/
}
| primary_value tCOLON2 tCONSTANT
{
/*%%%*/
$$ = NEW_COLON2($1, $3);
/*%
$$ = dispatch2(const_path_ref, $1, $3);
%*/
}
| tCOLON3 tCONSTANT
{
/*%%%*/
$$ = NEW_COLON3($2);
/*%
$$ = dispatch1(top_const_ref, $2);
%*/
}
| tLBRACK aref_args ']'
{
/*%%%*/
if ($2 == 0) {
$$ = NEW_ZARRAY(); /* zero length array*/
}
else {
$$ = $2;
}
/*%
$$ = dispatch1(array, escape_Qundef($2));
%*/
}
| tLBRACE assoc_list '}'
{
/*%%%*/
$$ = new_hash($2);
/*%
$$ = dispatch1(hash, escape_Qundef($2));
%*/
}
| keyword_return
{
/*%%%*/
$$ = NEW_RETURN(0);
/*%
$$ = dispatch0(return0);
%*/
}
| keyword_yield '(' call_args rparen
{
/*%%%*/
$$ = new_yield($3);
/*%
$$ = dispatch1(yield, dispatch1(paren, $3));
%*/
}
| keyword_yield '(' rparen
{
/*%%%*/
$$ = NEW_YIELD(0);
/*%
$$ = dispatch1(yield, dispatch1(paren, arg_new()));
%*/
}
| keyword_yield
{
/*%%%*/
$$ = NEW_YIELD(0);
/*%
$$ = dispatch0(yield0);
%*/
}
| keyword_defined opt_nl '(' {in_defined = 1;} expr rparen
{
in_defined = 0;
/*%%%*/
$$ = new_defined($5);
/*%
$$ = dispatch1(defined, $5);
%*/
}
| keyword_not '(' expr rparen
{
$$ = call_uni_op(method_cond($3), METHOD_NOT);
}
| keyword_not '(' rparen
{
$$ = call_uni_op(method_cond(new_nil()), METHOD_NOT);
}
| fcall brace_block
{
/*%%%*/
$2->nd_iter = $1;
$$ = $2;
/*%
$$ = method_arg(dispatch1(fcall, $1), arg_new());
$$ = method_add_block($$, $2);
%*/
}
| method_call
| method_call brace_block
{
/*%%%*/
block_dup_check($1->nd_args, $2);
$2->nd_iter = $1;
$$ = $2;
/*%
$$ = method_add_block($1, $2);
%*/
}
| tLAMBDA lambda
{
$$ = $2;
}
| k_if expr_value then
compstmt
if_tail
k_end
{
/*%%%*/
$$ = new_if($2, $4, $5);
fixpos($$, $2);
/*%
$$ = dispatch3(if, $2, $4, escape_Qundef($5));
%*/
}
| k_unless expr_value then
compstmt
opt_else
k_end
{
/*%%%*/
$$ = new_unless($2, $4, $5);
fixpos($$, $2);
/*%
$$ = dispatch3(unless, $2, $4, escape_Qundef($5));
%*/
}
| k_while {COND_PUSH(1);} expr_value do {COND_POP();}
compstmt
k_end
{
/*%%%*/
$$ = NEW_WHILE(cond($3), $6, 1);
fixpos($$, $3);
/*%
$$ = dispatch2(while, $3, $6);
%*/
}
| k_until {COND_PUSH(1);} expr_value do {COND_POP();}
compstmt
k_end
{
/*%%%*/
$$ = NEW_UNTIL(cond($3), $6, 1);
fixpos($$, $3);
/*%
$$ = dispatch2(until, $3, $6);
%*/
}
| k_case expr_value opt_terms
case_body
k_end
{
/*%%%*/
$$ = NEW_CASE($2, $4);
fixpos($$, $2);
/*%
$$ = dispatch2(case, $2, $4);
%*/
}
| k_case opt_terms case_body k_end
{
/*%%%*/
$$ = NEW_CASE(0, $3);
/*%
$$ = dispatch2(case, Qnil, $3);
%*/
}
| k_for for_var keyword_in
{COND_PUSH(1);}
expr_value do
{COND_POP();}
compstmt
k_end
{
/*%%%*/
/*
* for a, b, c in e
* #=>
* e.each{|*x| a, b, c = x}
*
* for a in e
* #=>
* e.each{|x| a, = x}
*/
ID id = internal_id();
ID *tbl = ALLOC_N(ID, 2);
NODE *m = NEW_ARGS_AUX(0, 0);
NODE *args, *scope;
switch (nd_type($2)) {
case NODE_MASGN:
m->nd_next = node_assign($2, NEW_FOR(NEW_DVAR(id), 0, 0));
args = new_args(m, 0, id, 0, new_args_tail(0, 0, 0));
break;
case NODE_LASGN:
case NODE_DASGN:
case NODE_DASGN_CURR:
$2->nd_value = NEW_DVAR(id);
m->nd_plen = 1;
m->nd_next = $2;
args = new_args(m, 0, 0, 0, new_args_tail(0, 0, 0));
break;
default:
m->nd_next = node_assign(NEW_MASGN(NEW_LIST($2), 0), NEW_DVAR(id));
args = new_args(m, 0, id, 0, new_args_tail(0, 0, 0));
break;
}
scope = NEW_NODE(NODE_SCOPE, tbl, $8, args);
tbl[0] = 1; tbl[1] = id;
$$ = NEW_FOR(0, $5, scope);
fixpos($$, $2);
/*%
$$ = dispatch3(for, $2, $5, $8);
%*/
}
| k_class cpath superclass
{
if (in_def || in_single)
yyerror("class definition in method body");
local_push(0);
/*%%%*/
$<num>$ = ruby_sourceline;
/*%
%*/
}
bodystmt
k_end
{
/*%%%*/
$$ = NEW_CLASS($2, $5, $3);
nd_set_line($$, $<num>4);
/*%
$$ = dispatch3(class, $2, $3, $5);
%*/
local_pop();
}
| k_class tLSHFT expr
{
$<num>$ = (in_def << 1) | in_single;
in_def = 0;
in_single = 0;
local_push(0);
}
term
bodystmt
k_end
{
/*%%%*/
$$ = NEW_SCLASS($3, $6);
fixpos($$, $3);
/*%
$$ = dispatch2(sclass, $3, $6);
%*/
local_pop();
in_def = ($<num>4 >> 1) & 1;
in_single = $<num>4 & 1;
}
| k_module cpath
{
if (in_def || in_single)
yyerror("module definition in method body");
local_push(0);
/*%%%*/
$<num>$ = ruby_sourceline;
/*%
%*/
}
bodystmt
k_end
{
/*%%%*/
$$ = NEW_MODULE($2, $4);
nd_set_line($$, $<num>3);
/*%
$$ = dispatch2(module, $2, $4);
%*/
local_pop();
}
| k_def fname
{
local_push(0);
$<id>$ = current_arg;
current_arg = 0;
}
{
$<num>$ = in_def;
in_def = 1;
}
f_arglist
bodystmt
k_end
{
/*%%%*/
NODE *body = remove_begin($6);
reduce_nodes(&body);
$$ = NEW_DEFN($2, $5, body, METHOD_VISI_PRIVATE);
nd_set_line($$, $<num>1);
/*%
$$ = dispatch3(def, $2, $5, $6);
%*/
local_pop();
in_def = $<num>4 & 1;
current_arg = $<id>3;
}
| k_def singleton dot_or_colon {SET_LEX_STATE(EXPR_FNAME);} fname
{
$<num>4 = in_single;
in_single = 1;
SET_LEX_STATE(EXPR_ENDFN|EXPR_LABEL); /* force for args */
local_push(0);
$<id>$ = current_arg;
current_arg = 0;
}
f_arglist
bodystmt
k_end
{
/*%%%*/
NODE *body = remove_begin($8);
reduce_nodes(&body);
$$ = NEW_DEFS($2, $5, $7, body);
nd_set_line($$, $<num>1);
/*%
$$ = dispatch5(defs, $2, $3, $5, $7, $8);
%*/
local_pop();
in_single = $<num>4 & 1;
current_arg = $<id>6;
}
| keyword_break
{
/*%%%*/
$$ = NEW_BREAK(0);
/*%
$$ = dispatch1(break, arg_new());
%*/
}
| keyword_next
{
/*%%%*/
$$ = NEW_NEXT(0);
/*%
$$ = dispatch1(next, arg_new());
%*/
}
| keyword_redo
{
/*%%%*/
$$ = NEW_REDO();
/*%
$$ = dispatch0(redo);
%*/
}
| keyword_retry
{
/*%%%*/
$$ = NEW_RETRY();
/*%
$$ = dispatch0(retry);
%*/
}
;
primary_value : primary
{
/*%%%*/
value_expr($1);
$$ = $1;
if (!$$) $$ = NEW_NIL();
/*%
$$ = $1;
%*/
}
;
k_begin : keyword_begin
{
token_info_push("begin");
}
;
k_if : keyword_if
{
token_info_push("if");
}
;
k_unless : keyword_unless
{
token_info_push("unless");
}
;
k_while : keyword_while
{
token_info_push("while");
}
;
k_until : keyword_until
{
token_info_push("until");
}
;
k_case : keyword_case
{
token_info_push("case");
}
;
k_for : keyword_for
{
token_info_push("for");
}
;
k_class : keyword_class
{
token_info_push("class");
}
;
k_module : keyword_module
{
token_info_push("module");
}
;
k_def : keyword_def
{
token_info_push("def");
/*%%%*/
$<num>$ = ruby_sourceline;
/*%
%*/
}
;
k_end : keyword_end
{
token_info_pop("end");
}
;
then : term
/*%c%*/
/*%c
{ $$ = Qnil; }
%*/
| keyword_then
| term keyword_then
/*%c%*/
/*%c
{ $$ = $2; }
%*/
;
do : term
/*%c%*/
/*%c
{ $$ = Qnil; }
%*/
| keyword_do_cond
;
if_tail : opt_else
| keyword_elsif expr_value then
compstmt
if_tail
{
/*%%%*/
$$ = new_if($2, $4, $5);
fixpos($$, $2);
/*%
$$ = dispatch3(elsif, $2, $4, escape_Qundef($5));
%*/
}
;
opt_else : none
| keyword_else compstmt
{
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(else, $2);
%*/
}
;
for_var : lhs
| mlhs
;
f_marg : f_norm_arg
{
$$ = assignable($1, 0);
/*%%%*/
/*%
$$ = dispatch1(mlhs_paren, $$);
%*/
}
| tLPAREN f_margs rparen
{
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(mlhs_paren, $2);
%*/
}
;
f_marg_list : f_marg
{
/*%%%*/
$$ = NEW_LIST($1);
/*%
$$ = mlhs_add(mlhs_new(), $1);
%*/
}
| f_marg_list ',' f_marg
{
/*%%%*/
$$ = list_append($1, $3);
/*%
$$ = mlhs_add($1, $3);
%*/
}
;
f_margs : f_marg_list
{
/*%%%*/
$$ = NEW_MASGN($1, 0);
/*%
$$ = $1;
%*/
}
| f_marg_list ',' tSTAR f_norm_arg
{
$$ = assignable($4, 0);
/*%%%*/
$$ = NEW_MASGN($1, $$);
/*%
$$ = mlhs_add_star($1, $$);
%*/
}
| f_marg_list ',' tSTAR f_norm_arg ',' f_marg_list
{
$$ = assignable($4, 0);
/*%%%*/
$$ = NEW_MASGN($1, NEW_POSTARG($$, $6));
/*%
$$ = mlhs_add_star($1, $$);
%*/
}
| f_marg_list ',' tSTAR
{
/*%%%*/
$$ = NEW_MASGN($1, -1);
/*%
$$ = mlhs_add_star($1, Qnil);
%*/
}
| f_marg_list ',' tSTAR ',' f_marg_list
{
/*%%%*/
$$ = NEW_MASGN($1, NEW_POSTARG(-1, $5));
/*%
$$ = mlhs_add_star($1, $5);
%*/
}
| tSTAR f_norm_arg
{
$$ = assignable($2, 0);
/*%%%*/
$$ = NEW_MASGN(0, $$);
/*%
$$ = mlhs_add_star(mlhs_new(), $$);
%*/
}
| tSTAR f_norm_arg ',' f_marg_list
{
$$ = assignable($2, 0);
/*%%%*/
$$ = NEW_MASGN(0, NEW_POSTARG($$, $4));
/*%
#if 0
TODO: Check me
#endif
$$ = mlhs_add_star($$, $4);
%*/
}
| tSTAR
{
/*%%%*/
$$ = NEW_MASGN(0, -1);
/*%
$$ = mlhs_add_star(mlhs_new(), Qnil);
%*/
}
| tSTAR ',' f_marg_list
{
/*%%%*/
$$ = NEW_MASGN(0, NEW_POSTARG(-1, $3));
/*%
$$ = mlhs_add_star(mlhs_new(), Qnil);
%*/
}
;
block_args_tail : f_block_kwarg ',' f_kwrest opt_f_block_arg
{
$$ = new_args_tail($1, $3, $4);
}
| f_block_kwarg opt_f_block_arg
{
$$ = new_args_tail($1, Qnone, $2);
}
| f_kwrest opt_f_block_arg
{
$$ = new_args_tail(Qnone, $1, $2);
}
| f_block_arg
{
$$ = new_args_tail(Qnone, Qnone, $1);
}
;
opt_block_args_tail : ',' block_args_tail
{
$$ = $2;
}
| /* none */
{
$$ = new_args_tail(Qnone, Qnone, Qnone);
}
;
block_param : f_arg ',' f_block_optarg ',' f_rest_arg opt_block_args_tail
{
$$ = new_args($1, $3, $5, Qnone, $6);
}
| f_arg ',' f_block_optarg ',' f_rest_arg ',' f_arg opt_block_args_tail
{
$$ = new_args($1, $3, $5, $7, $8);
}
| f_arg ',' f_block_optarg opt_block_args_tail
{
$$ = new_args($1, $3, Qnone, Qnone, $4);
}
| f_arg ',' f_block_optarg ',' f_arg opt_block_args_tail
{
$$ = new_args($1, $3, Qnone, $5, $6);
}
| f_arg ',' f_rest_arg opt_block_args_tail
{
$$ = new_args($1, Qnone, $3, Qnone, $4);
}
| f_arg ','
{
$$ = new_args($1, Qnone, 1, Qnone, new_args_tail(Qnone, Qnone, Qnone));
/*%%%*/
/*%
dispatch1(excessed_comma, $$);
%*/
}
| f_arg ',' f_rest_arg ',' f_arg opt_block_args_tail
{
$$ = new_args($1, Qnone, $3, $5, $6);
}
| f_arg opt_block_args_tail
{
$$ = new_args($1, Qnone, Qnone, Qnone, $2);
}
| f_block_optarg ',' f_rest_arg opt_block_args_tail
{
$$ = new_args(Qnone, $1, $3, Qnone, $4);
}
| f_block_optarg ',' f_rest_arg ',' f_arg opt_block_args_tail
{
$$ = new_args(Qnone, $1, $3, $5, $6);
}
| f_block_optarg opt_block_args_tail
{
$$ = new_args(Qnone, $1, Qnone, Qnone, $2);
}
| f_block_optarg ',' f_arg opt_block_args_tail
{
$$ = new_args(Qnone, $1, Qnone, $3, $4);
}
| f_rest_arg opt_block_args_tail
{
$$ = new_args(Qnone, Qnone, $1, Qnone, $2);
}
| f_rest_arg ',' f_arg opt_block_args_tail
{
$$ = new_args(Qnone, Qnone, $1, $3, $4);
}
| block_args_tail
{
$$ = new_args(Qnone, Qnone, Qnone, Qnone, $1);
}
;
opt_block_param : none
| block_param_def
{
command_start = TRUE;
}
;
block_param_def : '|' opt_bv_decl '|'
{
current_arg = 0;
/*%%%*/
$$ = 0;
/*%
$$ = blockvar_new(params_new(Qnil,Qnil,Qnil,Qnil,Qnil,Qnil,Qnil),
escape_Qundef($2));
%*/
}
| tOROP
{
/*%%%*/
$$ = 0;
/*%
$$ = blockvar_new(params_new(Qnil,Qnil,Qnil,Qnil,Qnil,Qnil,Qnil),
Qnil);
%*/
}
| '|' block_param opt_bv_decl '|'
{
current_arg = 0;
/*%%%*/
$$ = $2;
/*%
$$ = blockvar_new(escape_Qundef($2), escape_Qundef($3));
%*/
}
;
opt_bv_decl : opt_nl
{
$$ = 0;
}
| opt_nl ';' bv_decls opt_nl
{
/*%%%*/
$$ = 0;
/*%
$$ = $3;
%*/
}
;
bv_decls : bvar
/*%c%*/
/*%c
{
$$ = rb_ary_new3(1, $1);
}
%*/
| bv_decls ',' bvar
/*%c%*/
/*%c
{
rb_ary_push($1, $3);
}
%*/
;
bvar : tIDENTIFIER
{
new_bv(get_id($1));
/*%%%*/
/*%
$$ = get_value($1);
%*/
}
| f_bad_arg
{
$$ = 0;
}
;
lambda : {
$<vars>$ = dyna_push();
}
{
$<num>$ = lpar_beg;
lpar_beg = ++paren_nest;
}
f_larglist
{
$<num>$ = ruby_sourceline;
}
{
$<val>$ = cmdarg_stack;
CMDARG_SET(0);
}
lambda_body
{
lpar_beg = $<num>2;
CMDARG_SET($<val>5);
CMDARG_LEXPOP();
/*%%%*/
$$ = NEW_LAMBDA($3, $6);
nd_set_line($$, $<num>4);
/*%
$$ = dispatch2(lambda, $3, $6);
%*/
dyna_pop($<vars>1);
}
;
f_larglist : '(' f_args opt_bv_decl ')'
{
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(paren, $2);
%*/
}
| f_args
{
$$ = $1;
}
;
lambda_body : tLAMBEG compstmt '}'
{
token_info_pop("}");
$$ = $2;
}
| keyword_do_LAMBDA compstmt k_end
{
$$ = $2;
}
;
do_block : keyword_do_block
{
/*%%%*/
$<num>$ = ruby_sourceline;
/*% %*/
}
do_body keyword_end
{
$$ = $3;
/*%%%*/
nd_set_line($$, $<num>2);
/*% %*/
}
;
block_call : command do_block
{
/*%%%*/
if (nd_type($1) == NODE_YIELD) {
compile_error(PARSER_ARG "block given to yield");
}
else {
block_dup_check($1->nd_args, $2);
}
$2->nd_iter = $1;
$$ = $2;
fixpos($$, $1);
/*%
$$ = method_add_block($1, $2);
%*/
}
| block_call call_op2 operation2 opt_paren_args
{
$$ = new_qcall($2, $1, $3, $4);
}
| block_call call_op2 operation2 opt_paren_args brace_block
{
/*%%%*/
block_dup_check($4, $5);
$5->nd_iter = new_command_qcall($2, $1, $3, $4);
$$ = $5;
fixpos($$, $1);
/*%
$$ = dispatch4(command_call, $1, $2, $3, $4);
$$ = method_add_block($$, $5);
%*/
}
| block_call call_op2 operation2 command_args do_block
{
/*%%%*/
block_dup_check($4, $5);
$5->nd_iter = new_command_qcall($2, $1, $3, $4);
$$ = $5;
fixpos($$, $1);
/*%
$$ = dispatch4(command_call, $1, $2, $3, $4);
$$ = method_add_block($$, $5);
%*/
}
;
method_call : fcall paren_args
{
/*%%%*/
$$ = $1;
$$->nd_args = $2;
/*%
$$ = method_arg(dispatch1(fcall, $1), $2);
%*/
}
| primary_value call_op operation2
{
/*%%%*/
$<num>$ = ruby_sourceline;
/*% %*/
}
opt_paren_args
{
$$ = new_qcall($2, $1, $3, $5);
nd_set_line($$, $<num>4);
}
| primary_value tCOLON2 operation2
{
/*%%%*/
$<num>$ = ruby_sourceline;
/*% %*/
}
paren_args
{
$$ = new_qcall(ID2VAL(idCOLON2), $1, $3, $5);
nd_set_line($$, $<num>4);
}
| primary_value tCOLON2 operation3
{
$$ = new_qcall(ID2VAL(idCOLON2), $1, $3, Qnull);
}
| primary_value call_op
{
/*%%%*/
$<num>$ = ruby_sourceline;
/*% %*/
}
paren_args
{
$$ = new_qcall($2, $1, ID2VAL(idCall), $4);
nd_set_line($$, $<num>3);
}
| primary_value tCOLON2
{
/*%%%*/
$<num>$ = ruby_sourceline;
/*% %*/
}
paren_args
{
$$ = new_qcall(ID2VAL(idCOLON2), $1, ID2VAL(idCall), $4);
nd_set_line($$, $<num>3);
}
| keyword_super paren_args
{
/*%%%*/
$$ = NEW_SUPER($2);
/*%
$$ = dispatch1(super, $2);
%*/
}
| keyword_super
{
/*%%%*/
$$ = NEW_ZSUPER();
/*%
$$ = dispatch0(zsuper);
%*/
}
| primary_value '[' opt_call_args rbracket
{
/*%%%*/
if ($1 && nd_type($1) == NODE_SELF)
$$ = NEW_FCALL(tAREF, $3);
else
$$ = NEW_CALL($1, tAREF, $3);
fixpos($$, $1);
/*%
$$ = dispatch2(aref, $1, escape_Qundef($3));
%*/
}
;
brace_block : '{'
{
/*%%%*/
$<num>$ = ruby_sourceline;
/*% %*/
}
brace_body '}'
{
$$ = $3;
/*%%%*/
nd_set_line($$, $<num>2);
/*% %*/
}
| keyword_do
{
/*%%%*/
$<num>$ = ruby_sourceline;
/*% %*/
}
do_body keyword_end
{
$$ = $3;
/*%%%*/
nd_set_line($$, $<num>2);
/*% %*/
}
;
brace_body : {$<vars>$ = dyna_push();}
{$<val>$ = cmdarg_stack >> 1; CMDARG_SET(0);}
opt_block_param compstmt
{
$$ = new_brace_body($3, $4);
dyna_pop($<vars>1);
CMDARG_SET($<val>2);
}
;
do_body : {$<vars>$ = dyna_push();}
{$<val>$ = cmdarg_stack; CMDARG_SET(0);}
opt_block_param bodystmt
{
$$ = new_do_body($3, $4);
dyna_pop($<vars>1);
CMDARG_SET($<val>2);
}
;
case_body : keyword_when args then
compstmt
cases
{
/*%%%*/
$$ = NEW_WHEN($2, $4, $5);
/*%
$$ = dispatch3(when, $2, $4, escape_Qundef($5));
%*/
}
;
cases : opt_else
| case_body
;
opt_rescue : keyword_rescue exc_list exc_var then
compstmt
opt_rescue
{
/*%%%*/
if ($3) {
$3 = node_assign($3, NEW_ERRINFO());
$5 = block_append($3, $5);
}
$$ = NEW_RESBODY($2, $5, $6);
fixpos($$, $2?$2:$5);
/*%
$$ = dispatch4(rescue,
escape_Qundef($2),
escape_Qundef($3),
escape_Qundef($5),
escape_Qundef($6));
%*/
}
| none
;
exc_list : arg_value
{
/*%%%*/
$$ = NEW_LIST($1);
/*%
$$ = rb_ary_new3(1, $1);
%*/
}
| mrhs
{
/*%%%*/
if (!($$ = splat_array($1))) $$ = $1;
/*%
$$ = $1;
%*/
}
| none
;
exc_var : tASSOC lhs
{
$$ = $2;
}
| none
;
opt_ensure : keyword_ensure compstmt
{
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(ensure, $2);
%*/
}
| none
;
literal : numeric
| symbol
{
/*%%%*/
$$ = NEW_LIT(ID2SYM($1));
/*%
$$ = dispatch1(symbol_literal, $1);
%*/
}
| dsym
;
strings : string
{
/*%%%*/
NODE *node = $1;
if (!node) {
node = NEW_STR(STR_NEW0());
}
else {
node = evstr2dstr(node);
}
$$ = node;
/*%
$$ = $1;
%*/
}
;
string : tCHAR
| string1
| string string1
{
/*%%%*/
$$ = literal_concat($1, $2);
/*%
$$ = dispatch2(string_concat, $1, $2);
%*/
}
;
string1 : tSTRING_BEG string_contents tSTRING_END
{
$$ = new_string1(heredoc_dedent($2));
}
;
xstring : tXSTRING_BEG xstring_contents tSTRING_END
{
$$ = new_xstring(heredoc_dedent($2));
}
;
regexp : tREGEXP_BEG regexp_contents tREGEXP_END
{
$$ = new_regexp($2, $3);
}
;
words : tWORDS_BEG ' ' tSTRING_END
{
/*%%%*/
$$ = NEW_ZARRAY();
/*%
$$ = dispatch0(words_new);
$$ = dispatch1(array, $$);
%*/
}
| tWORDS_BEG word_list tSTRING_END
{
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(array, $2);
%*/
}
;
word_list : /* none */
{
/*%%%*/
$$ = 0;
/*%
$$ = dispatch0(words_new);
%*/
}
| word_list word ' '
{
/*%%%*/
$$ = list_append($1, evstr2dstr($2));
/*%
$$ = dispatch2(words_add, $1, $2);
%*/
}
;
word : string_content
/*%c%*/
/*%c
{
$$ = dispatch0(word_new);
$$ = dispatch2(word_add, $$, $1);
}
%*/
| word string_content
{
/*%%%*/
$$ = literal_concat($1, $2);
/*%
$$ = dispatch2(word_add, $1, $2);
%*/
}
;
symbols : tSYMBOLS_BEG ' ' tSTRING_END
{
/*%%%*/
$$ = NEW_ZARRAY();
/*%
$$ = dispatch0(symbols_new);
$$ = dispatch1(array, $$);
%*/
}
| tSYMBOLS_BEG symbol_list tSTRING_END
{
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(array, $2);
%*/
}
;
symbol_list : /* none */
{
/*%%%*/
$$ = 0;
/*%
$$ = dispatch0(symbols_new);
%*/
}
| symbol_list word ' '
{
/*%%%*/
$2 = evstr2dstr($2);
if (nd_type($2) == NODE_DSTR) {
nd_set_type($2, NODE_DSYM);
}
else {
nd_set_type($2, NODE_LIT);
$2->nd_lit = rb_str_intern($2->nd_lit);
}
$$ = list_append($1, $2);
/*%
$$ = dispatch2(symbols_add, $1, $2);
%*/
}
;
qwords : tQWORDS_BEG ' ' tSTRING_END
{
/*%%%*/
$$ = NEW_ZARRAY();
/*%
$$ = dispatch0(qwords_new);
$$ = dispatch1(array, $$);
%*/
}
| tQWORDS_BEG qword_list tSTRING_END
{
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(array, $2);
%*/
}
;
qsymbols : tQSYMBOLS_BEG ' ' tSTRING_END
{
/*%%%*/
$$ = NEW_ZARRAY();
/*%
$$ = dispatch0(qsymbols_new);
$$ = dispatch1(array, $$);
%*/
}
| tQSYMBOLS_BEG qsym_list tSTRING_END
{
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(array, $2);
%*/
}
;
qword_list : /* none */
{
/*%%%*/
$$ = 0;
/*%
$$ = dispatch0(qwords_new);
%*/
}
| qword_list tSTRING_CONTENT ' '
{
/*%%%*/
$$ = list_append($1, $2);
/*%
$$ = dispatch2(qwords_add, $1, $2);
%*/
}
;
qsym_list : /* none */
{
/*%%%*/
$$ = 0;
/*%
$$ = dispatch0(qsymbols_new);
%*/
}
| qsym_list tSTRING_CONTENT ' '
{
/*%%%*/
VALUE lit;
lit = $2->nd_lit;
$2->nd_lit = ID2SYM(rb_intern_str(lit));
nd_set_type($2, NODE_LIT);
$$ = list_append($1, $2);
/*%
$$ = dispatch2(qsymbols_add, $1, $2);
%*/
}
;
string_contents : /* none */
{
/*%%%*/
$$ = 0;
/*%
$$ = dispatch0(string_content);
%*/
}
| string_contents string_content
{
/*%%%*/
$$ = literal_concat($1, $2);
/*%
$$ = dispatch2(string_add, $1, $2);
%*/
}
;
xstring_contents: /* none */
{
/*%%%*/
$$ = 0;
/*%
$$ = dispatch0(xstring_new);
%*/
}
| xstring_contents string_content
{
/*%%%*/
$$ = literal_concat($1, $2);
/*%
$$ = dispatch2(xstring_add, $1, $2);
%*/
}
;
regexp_contents: /* none */
{
/*%%%*/
$$ = 0;
/*%
$$ = ripper_new_yylval(0, dispatch0(regexp_new), 0);
%*/
}
| regexp_contents string_content
{
/*%%%*/
NODE *head = $1, *tail = $2;
if (!head) {
$$ = tail;
}
else if (!tail) {
$$ = head;
}
else {
switch (nd_type(head)) {
case NODE_STR:
nd_set_type(head, NODE_DSTR);
break;
case NODE_DSTR:
break;
default:
head = list_append(NEW_DSTR(Qnil), head);
break;
}
$$ = list_append(head, tail);
}
/*%
VALUE s1 = 1, s2 = 0, n1 = $1, n2 = $2;
if (ripper_is_node_yylval(n1)) {
s1 = RNODE(n1)->nd_cval;
n1 = RNODE(n1)->nd_rval;
}
if (ripper_is_node_yylval(n2)) {
s2 = RNODE(n2)->nd_cval;
n2 = RNODE(n2)->nd_rval;
}
$$ = dispatch2(regexp_add, n1, n2);
if (!s1 && s2) {
$$ = ripper_new_yylval(0, $$, s2);
}
%*/
}
;
string_content : tSTRING_CONTENT
| tSTRING_DVAR
{
$<node>$ = lex_strterm;
lex_strterm = 0;
SET_LEX_STATE(EXPR_BEG);
}
string_dvar
{
lex_strterm = $<node>2;
/*%%%*/
$$ = NEW_EVSTR($3);
/*%
$$ = dispatch1(string_dvar, $3);
%*/
}
| tSTRING_DBEG
{
$<val>1 = cond_stack;
$<val>$ = cmdarg_stack;
COND_SET(0);
CMDARG_SET(0);
}
{
$<node>$ = lex_strterm;
lex_strterm = 0;
}
{
$<num>$ = lex_state;
SET_LEX_STATE(EXPR_BEG);
}
{
$<num>$ = brace_nest;
brace_nest = 0;
}
{
$<num>$ = heredoc_indent;
heredoc_indent = 0;
}
compstmt tSTRING_DEND
{
COND_SET($<val>1);
CMDARG_SET($<val>2);
lex_strterm = $<node>3;
SET_LEX_STATE($<num>4);
brace_nest = $<num>5;
heredoc_indent = $<num>6;
heredoc_line_indent = -1;
/*%%%*/
if ($7) $7->flags &= ~NODE_FL_NEWLINE;
$$ = new_evstr($7);
/*%
$$ = dispatch1(string_embexpr, $7);
%*/
}
;
string_dvar : tGVAR
{
/*%%%*/
$$ = NEW_GVAR($1);
/*%
$$ = dispatch1(var_ref, $1);
%*/
}
| tIVAR
{
/*%%%*/
$$ = NEW_IVAR($1);
/*%
$$ = dispatch1(var_ref, $1);
%*/
}
| tCVAR
{
/*%%%*/
$$ = NEW_CVAR($1);
/*%
$$ = dispatch1(var_ref, $1);
%*/
}
| backref
;
symbol : tSYMBEG sym
{
SET_LEX_STATE(EXPR_ENDARG);
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(symbol, $2);
%*/
}
;
sym : fname
| tIVAR
| tGVAR
| tCVAR
;
dsym : tSYMBEG xstring_contents tSTRING_END
{
SET_LEX_STATE(EXPR_ENDARG);
/*%%%*/
$$ = dsym_node($2);
/*%
$$ = dispatch1(dyna_symbol, $2);
%*/
}
;
numeric : simple_numeric
| tUMINUS_NUM simple_numeric %prec tLOWEST
{
/*%%%*/
$$ = $2;
$$->nd_lit = negate_lit($$->nd_lit);
/*%
$$ = dispatch2(unary, ID2VAL(idUMinus), $2);
%*/
}
;
simple_numeric : tINTEGER
| tFLOAT
| tRATIONAL
| tIMAGINARY
;
user_variable : tIDENTIFIER
| tIVAR
| tGVAR
| tCONSTANT
| tCVAR
;
keyword_variable: keyword_nil {ifndef_ripper($$ = keyword_nil);}
| keyword_self {ifndef_ripper($$ = keyword_self);}
| keyword_true {ifndef_ripper($$ = keyword_true);}
| keyword_false {ifndef_ripper($$ = keyword_false);}
| keyword__FILE__ {ifndef_ripper($$ = keyword__FILE__);}
| keyword__LINE__ {ifndef_ripper($$ = keyword__LINE__);}
| keyword__ENCODING__ {ifndef_ripper($$ = keyword__ENCODING__);}
;
var_ref : user_variable
{
/*%%%*/
if (!($$ = gettable($1))) $$ = NEW_BEGIN(0);
/*%
if (id_is_var(get_id($1))) {
$$ = dispatch1(var_ref, $1);
}
else {
$$ = dispatch1(vcall, $1);
}
%*/
}
| keyword_variable
{
/*%%%*/
if (!($$ = gettable($1))) $$ = NEW_BEGIN(0);
/*%
$$ = dispatch1(var_ref, $1);
%*/
}
;
var_lhs : user_variable
{
$$ = assignable($1, 0);
/*%%%*/
/*%
$$ = dispatch1(var_field, $$);
%*/
}
| keyword_variable
{
$$ = assignable($1, 0);
/*%%%*/
/*%
$$ = dispatch1(var_field, $$);
%*/
}
;
backref : tNTH_REF
| tBACK_REF
;
superclass : '<'
{
SET_LEX_STATE(EXPR_BEG);
command_start = TRUE;
}
expr_value term
{
$$ = $3;
}
| /* none */
{
/*%%%*/
$$ = 0;
/*%
$$ = Qnil;
%*/
}
;
f_arglist : '(' f_args rparen
{
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(paren, $2);
%*/
SET_LEX_STATE(EXPR_BEG);
command_start = TRUE;
}
| {
$<num>$ = parser->in_kwarg;
parser->in_kwarg = 1;
lex_state |= EXPR_LABEL; /* force for args */
}
f_args term
{
parser->in_kwarg = !!$<num>1;
$$ = $2;
SET_LEX_STATE(EXPR_BEG);
command_start = TRUE;
}
;
args_tail : f_kwarg ',' f_kwrest opt_f_block_arg
{
$$ = new_args_tail($1, $3, $4);
}
| f_kwarg opt_f_block_arg
{
$$ = new_args_tail($1, Qnone, $2);
}
| f_kwrest opt_f_block_arg
{
$$ = new_args_tail(Qnone, $1, $2);
}
| f_block_arg
{
$$ = new_args_tail(Qnone, Qnone, $1);
}
;
opt_args_tail : ',' args_tail
{
$$ = $2;
}
| /* none */
{
$$ = new_args_tail(Qnone, Qnone, Qnone);
}
;
f_args : f_arg ',' f_optarg ',' f_rest_arg opt_args_tail
{
$$ = new_args($1, $3, $5, Qnone, $6);
}
| f_arg ',' f_optarg ',' f_rest_arg ',' f_arg opt_args_tail
{
$$ = new_args($1, $3, $5, $7, $8);
}
| f_arg ',' f_optarg opt_args_tail
{
$$ = new_args($1, $3, Qnone, Qnone, $4);
}
| f_arg ',' f_optarg ',' f_arg opt_args_tail
{
$$ = new_args($1, $3, Qnone, $5, $6);
}
| f_arg ',' f_rest_arg opt_args_tail
{
$$ = new_args($1, Qnone, $3, Qnone, $4);
}
| f_arg ',' f_rest_arg ',' f_arg opt_args_tail
{
$$ = new_args($1, Qnone, $3, $5, $6);
}
| f_arg opt_args_tail
{
$$ = new_args($1, Qnone, Qnone, Qnone, $2);
}
| f_optarg ',' f_rest_arg opt_args_tail
{
$$ = new_args(Qnone, $1, $3, Qnone, $4);
}
| f_optarg ',' f_rest_arg ',' f_arg opt_args_tail
{
$$ = new_args(Qnone, $1, $3, $5, $6);
}
| f_optarg opt_args_tail
{
$$ = new_args(Qnone, $1, Qnone, Qnone, $2);
}
| f_optarg ',' f_arg opt_args_tail
{
$$ = new_args(Qnone, $1, Qnone, $3, $4);
}
| f_rest_arg opt_args_tail
{
$$ = new_args(Qnone, Qnone, $1, Qnone, $2);
}
| f_rest_arg ',' f_arg opt_args_tail
{
$$ = new_args(Qnone, Qnone, $1, $3, $4);
}
| args_tail
{
$$ = new_args(Qnone, Qnone, Qnone, Qnone, $1);
}
| /* none */
{
$$ = new_args_tail(Qnone, Qnone, Qnone);
$$ = new_args(Qnone, Qnone, Qnone, Qnone, $$);
}
;
f_bad_arg : tCONSTANT
{
/*%%%*/
yyerror("formal argument cannot be a constant");
$$ = 0;
/*%
$$ = dispatch1(param_error, $1);
ripper_error();
%*/
}
| tIVAR
{
/*%%%*/
yyerror("formal argument cannot be an instance variable");
$$ = 0;
/*%
$$ = dispatch1(param_error, $1);
ripper_error();
%*/
}
| tGVAR
{
/*%%%*/
yyerror("formal argument cannot be a global variable");
$$ = 0;
/*%
$$ = dispatch1(param_error, $1);
ripper_error();
%*/
}
| tCVAR
{
/*%%%*/
yyerror("formal argument cannot be a class variable");
$$ = 0;
/*%
$$ = dispatch1(param_error, $1);
ripper_error();
%*/
}
;
f_norm_arg : f_bad_arg
| tIDENTIFIER
{
formal_argument(get_id($1));
$$ = $1;
}
;
f_arg_asgn : f_norm_arg
{
ID id = get_id($1);
arg_var(id);
current_arg = id;
$$ = $1;
}
;
f_arg_item : f_arg_asgn
{
current_arg = 0;
/*%%%*/
$$ = NEW_ARGS_AUX($1, 1);
/*%
$$ = get_value($1);
%*/
}
| tLPAREN f_margs rparen
{
ID tid = internal_id();
arg_var(tid);
/*%%%*/
if (dyna_in_block()) {
$2->nd_value = NEW_DVAR(tid);
}
else {
$2->nd_value = NEW_LVAR(tid);
}
$$ = NEW_ARGS_AUX(tid, 1);
$$->nd_next = $2;
/*%
$$ = dispatch1(mlhs_paren, $2);
%*/
}
;
f_arg : f_arg_item
/*%c%*/
/*%c
{
$$ = rb_ary_new3(1, $1);
}
c%*/
| f_arg ',' f_arg_item
{
/*%%%*/
$$ = $1;
$$->nd_plen++;
$$->nd_next = block_append($$->nd_next, $3->nd_next);
rb_gc_force_recycle((VALUE)$3);
/*%
$$ = rb_ary_push($1, $3);
%*/
}
;
f_label : tLABEL
{
ID id = get_id($1);
arg_var(formal_argument(id));
current_arg = id;
$$ = $1;
}
;
f_kw : f_label arg_value
{
current_arg = 0;
$$ = assignable($1, $2);
/*%%%*/
$$ = new_kw_arg($$);
/*%
$$ = rb_assoc_new($$, $2);
%*/
}
| f_label
{
current_arg = 0;
$$ = assignable($1, (NODE *)-1);
/*%%%*/
$$ = new_kw_arg($$);
/*%
$$ = rb_assoc_new($$, 0);
%*/
}
;
f_block_kw : f_label primary_value
{
$$ = assignable($1, $2);
/*%%%*/
$$ = new_kw_arg($$);
/*%
$$ = rb_assoc_new($$, $2);
%*/
}
| f_label
{
$$ = assignable($1, (NODE *)-1);
/*%%%*/
$$ = new_kw_arg($$);
/*%
$$ = rb_assoc_new($$, 0);
%*/
}
;
f_block_kwarg : f_block_kw
{
/*%%%*/
$$ = $1;
/*%
$$ = rb_ary_new3(1, $1);
%*/
}
| f_block_kwarg ',' f_block_kw
{
/*%%%*/
$$ = kwd_append($1, $3);
/*%
$$ = rb_ary_push($1, $3);
%*/
}
;
f_kwarg : f_kw
{
/*%%%*/
$$ = $1;
/*%
$$ = rb_ary_new3(1, $1);
%*/
}
| f_kwarg ',' f_kw
{
/*%%%*/
$$ = kwd_append($1, $3);
/*%
$$ = rb_ary_push($1, $3);
%*/
}
;
kwrest_mark : tPOW
| tDSTAR
;
f_kwrest : kwrest_mark tIDENTIFIER
{
shadowing_lvar(get_id($2));
$$ = $2;
}
| kwrest_mark
{
$$ = internal_id();
arg_var($$);
}
;
f_opt : f_arg_asgn '=' arg_value
{
current_arg = 0;
$$ = assignable($1, $3);
/*%%%*/
$$ = NEW_OPT_ARG(0, $$);
/*%
$$ = rb_assoc_new($$, $3);
%*/
}
;
f_block_opt : f_arg_asgn '=' primary_value
{
current_arg = 0;
$$ = assignable($1, $3);
/*%%%*/
$$ = NEW_OPT_ARG(0, $$);
/*%
$$ = rb_assoc_new($$, $3);
%*/
}
;
f_block_optarg : f_block_opt
{
/*%%%*/
$$ = $1;
/*%
$$ = rb_ary_new3(1, $1);
%*/
}
| f_block_optarg ',' f_block_opt
{
/*%%%*/
NODE *opts = $1;
while (opts->nd_next) {
opts = opts->nd_next;
}
opts->nd_next = $3;
$$ = $1;
/*%
$$ = rb_ary_push($1, $3);
%*/
}
;
f_optarg : f_opt
{
/*%%%*/
$$ = $1;
/*%
$$ = rb_ary_new3(1, $1);
%*/
}
| f_optarg ',' f_opt
{
/*%%%*/
NODE *opts = $1;
while (opts->nd_next) {
opts = opts->nd_next;
}
opts->nd_next = $3;
$$ = $1;
/*%
$$ = rb_ary_push($1, $3);
%*/
}
;
restarg_mark : '*'
| tSTAR
;
f_rest_arg : restarg_mark tIDENTIFIER
{
/*%%%*/
if (!is_local_id($2))
yyerror("rest argument must be local variable");
/*% %*/
arg_var(shadowing_lvar(get_id($2)));
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(rest_param, $2);
%*/
}
| restarg_mark
{
/*%%%*/
$$ = internal_id();
arg_var($$);
/*%
$$ = dispatch1(rest_param, Qnil);
%*/
}
;
blkarg_mark : '&'
| tAMPER
;
f_block_arg : blkarg_mark tIDENTIFIER
{
/*%%%*/
if (!is_local_id($2))
yyerror("block argument must be local variable");
else if (!dyna_in_block() && local_id($2))
yyerror("duplicated block argument name");
/*% %*/
arg_var(shadowing_lvar(get_id($2)));
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(blockarg, $2);
%*/
}
;
opt_f_block_arg : ',' f_block_arg
{
$$ = $2;
}
| none
{
/*%%%*/
$$ = 0;
/*%
$$ = Qundef;
%*/
}
;
singleton : var_ref
{
/*%%%*/
value_expr($1);
$$ = $1;
if (!$$) $$ = NEW_NIL();
/*%
$$ = $1;
%*/
}
| '(' {SET_LEX_STATE(EXPR_BEG);} expr rparen
{
/*%%%*/
if ($3 == 0) {
yyerror("can't define singleton method for ().");
}
else {
switch (nd_type($3)) {
case NODE_STR:
case NODE_DSTR:
case NODE_XSTR:
case NODE_DXSTR:
case NODE_DREGX:
case NODE_LIT:
case NODE_ARRAY:
case NODE_ZARRAY:
yyerror("can't define singleton method for literals");
default:
value_expr($3);
break;
}
}
$$ = $3;
/*%
$$ = dispatch1(paren, $3);
%*/
}
;
assoc_list : none
| assocs trailer
{
/*%%%*/
$$ = $1;
/*%
$$ = dispatch1(assoclist_from_args, $1);
%*/
}
;
assocs : assoc
/*%c%*/
/*%c
{
$$ = rb_ary_new3(1, $1);
}
%*/
| assocs ',' assoc
{
/*%%%*/
NODE *assocs = $1;
NODE *tail = $3;
if (!assocs) {
assocs = tail;
}
else if (tail) {
if (assocs->nd_head &&
!tail->nd_head && nd_type(tail->nd_next) == NODE_ARRAY &&
nd_type(tail->nd_next->nd_head) == NODE_HASH) {
/* DSTAR */
tail = tail->nd_next->nd_head->nd_head;
}
assocs = list_concat(assocs, tail);
}
$$ = assocs;
/*%
$$ = rb_ary_push($1, $3);
%*/
}
;
assoc : arg_value tASSOC arg_value
{
/*%%%*/
if (nd_type($1) == NODE_STR) {
nd_set_type($1, NODE_LIT);
$1->nd_lit = rb_fstring($1->nd_lit);
}
$$ = list_append(NEW_LIST($1), $3);
/*%
$$ = dispatch2(assoc_new, $1, $3);
%*/
}
| tLABEL arg_value
{
/*%%%*/
$$ = list_append(NEW_LIST(NEW_LIT(ID2SYM($1))), $2);
/*%
$$ = dispatch2(assoc_new, $1, $2);
%*/
}
| tSTRING_BEG string_contents tLABEL_END arg_value
{
/*%%%*/
$$ = list_append(NEW_LIST(dsym_node($2)), $4);
/*%
$$ = dispatch2(assoc_new, dispatch1(dyna_symbol, $2), $4);
%*/
}
| tDSTAR arg_value
{
/*%%%*/
if (nd_type($2) == NODE_HASH &&
!($2->nd_head && $2->nd_head->nd_alen))
$$ = 0;
else
$$ = list_append(NEW_LIST(0), $2);
/*%
$$ = dispatch1(assoc_splat, $2);
%*/
}
;
operation : tIDENTIFIER
| tCONSTANT
| tFID
;
operation2 : tIDENTIFIER
| tCONSTANT
| tFID
| op
;
operation3 : tIDENTIFIER
| tFID
| op
;
dot_or_colon : '.'
/*%c%*/
/*%c
{ $$ = $<val>1; }
%*/
| tCOLON2
/*%c%*/
/*%c
{ $$ = $<val>1; }
%*/
;
call_op : '.'
{
$$ = TOKEN2VAL('.');
}
| tANDDOT
{
$$ = ID2VAL(idANDDOT);
}
;
call_op2 : call_op
| tCOLON2
{
$$ = ID2VAL(idCOLON2);
}
;
opt_terms : /* none */
| terms
;
opt_nl : /* none */
| '\n'
;
rparen : opt_nl ')'
;
rbracket : opt_nl ']'
;
trailer : /* none */
| '\n'
| ','
;
term : ';' {yyerrok;}
| '\n'
;
terms : term
| terms ';' {yyerrok;}
;
none : /* none */
{
$$ = Qnull;
}
;
%%
# undef parser
# undef yylex
# undef yylval
# define yylval (*parser->lval)
static int parser_regx_options(struct parser_params*);
static int parser_tokadd_string(struct parser_params*,int,int,int,long*,rb_encoding**);
static void parser_tokaddmbc(struct parser_params *parser, int c, rb_encoding *enc);
static int parser_parse_string(struct parser_params*,NODE*);
static int parser_here_document(struct parser_params*,NODE*);
# define nextc() parser_nextc(parser)
# define pushback(c) parser_pushback(parser, (c))
# define newtok() parser_newtok(parser)
# define tokspace(n) parser_tokspace(parser, (n))
# define tokadd(c) parser_tokadd(parser, (c))
# define tok_hex(numlen) parser_tok_hex(parser, (numlen))
# define read_escape(flags,e) parser_read_escape(parser, (flags), (e))
# define tokadd_escape(e) parser_tokadd_escape(parser, (e))
# define regx_options() parser_regx_options(parser)
# define tokadd_string(f,t,p,n,e) parser_tokadd_string(parser,(f),(t),(p),(n),(e))
# define parse_string(n) parser_parse_string(parser,(n))
# define tokaddmbc(c, enc) parser_tokaddmbc(parser, (c), (enc))
# define here_document(n) parser_here_document(parser,(n))
# define heredoc_identifier() parser_heredoc_identifier(parser)
# define heredoc_restore(n) parser_heredoc_restore(parser,(n))
# define whole_match_p(e,l,i) parser_whole_match_p(parser,(e),(l),(i))
# define number_literal_suffix(f) parser_number_literal_suffix(parser, (f))
# define set_number_literal(v, t, f) parser_set_number_literal(parser, (v), (t), (f))
# define set_integer_literal(v, f) parser_set_integer_literal(parser, (v), (f))
#ifndef RIPPER
# define set_yylval_str(x) (yylval.node = NEW_STR(x))
# define set_yylval_num(x) (yylval.num = (x))
# define set_yylval_id(x) (yylval.id = (x))
# define set_yylval_name(x) (yylval.id = (x))
# define set_yylval_literal(x) (yylval.node = NEW_LIT(x))
# define set_yylval_node(x) (yylval.node = (x))
# define yylval_id() (yylval.id)
#else
static inline VALUE
ripper_yylval_id(ID x)
{
return ripper_new_yylval(x, ID2SYM(x), 0);
}
# define set_yylval_str(x) (yylval.val = (x))
# define set_yylval_num(x) (yylval.val = ripper_new_yylval((x), 0, 0))
# define set_yylval_id(x) (void)(x)
# define set_yylval_name(x) (void)(yylval.val = ripper_yylval_id(x))
# define set_yylval_literal(x) (void)(x)
# define set_yylval_node(x) (void)(x)
# define yylval_id() yylval.id
#endif
#ifndef RIPPER
#define ripper_flush(p) (void)(p)
#define dispatch_scan_event(t) ((void)0)
#define dispatch_delayed_token(t) ((void)0)
#define has_delayed_token() (0)
#else
#define ripper_flush(p) ((p)->tokp = (p)->lex.pcur)
#define yylval_rval (*(RB_TYPE_P(yylval.val, T_NODE) ? &yylval.node->nd_rval : &yylval.val))
static inline VALUE
intern_sym(const char *name)
{
ID id = rb_intern_const(name);
return ID2SYM(id);
}
static int
ripper_has_scan_event(struct parser_params *parser)
{
if (lex_p < parser->tokp) rb_raise(rb_eRuntimeError, "lex_p < tokp");
return lex_p > parser->tokp;
}
static VALUE
ripper_scan_event_val(struct parser_params *parser, int t)
{
VALUE str = STR_NEW(parser->tokp, lex_p - parser->tokp);
VALUE rval = ripper_dispatch1(parser, ripper_token2eventid(t), str);
ripper_flush(parser);
return rval;
}
static void
ripper_dispatch_scan_event(struct parser_params *parser, int t)
{
if (!ripper_has_scan_event(parser)) return;
yylval_rval = ripper_scan_event_val(parser, t);
}
#define dispatch_scan_event(t) ripper_dispatch_scan_event(parser, t)
static void
ripper_dispatch_delayed_token(struct parser_params *parser, int t)
{
int saved_line = ruby_sourceline;
const char *saved_tokp = parser->tokp;
ruby_sourceline = parser->delayed_line;
parser->tokp = lex_pbeg + parser->delayed_col;
yylval_rval = ripper_dispatch1(parser, ripper_token2eventid(t), parser->delayed);
parser->delayed = Qnil;
ruby_sourceline = saved_line;
parser->tokp = saved_tokp;
}
#define dispatch_delayed_token(t) ripper_dispatch_delayed_token(parser, t)
#define has_delayed_token() (!NIL_P(parser->delayed))
#endif /* RIPPER */
#include "ruby/regex.h"
#include "ruby/util.h"
#define parser_encoding_name() (current_enc->name)
#define parser_mbclen() mbclen((lex_p-1),lex_pend,current_enc)
#define parser_precise_mbclen() rb_enc_precise_mbclen((lex_p-1),lex_pend,current_enc)
#define is_identchar(p,e,enc) (rb_enc_isalnum((unsigned char)(*(p)),(enc)) || (*(p)) == '_' || !ISASCII(*(p)))
#define parser_is_identchar() (!parser->eofp && is_identchar((lex_p-1),lex_pend,current_enc))
#define parser_isascii() ISASCII(*(lex_p-1))
static int
token_info_get_column(struct parser_params *parser, const char *pend)
{
int column = 1;
const char *p;
for (p = lex_pbeg; p < pend; p++) {
if (*p == '\t') {
column = (((column - 1) / TAB_WIDTH) + 1) * TAB_WIDTH;
}
column++;
}
return column;
}
static int
token_info_has_nonspaces(struct parser_params *parser, const char *pend)
{
const char *p;
for (p = lex_pbeg; p < pend; p++) {
if (*p != ' ' && *p != '\t') {
return 1;
}
}
return 0;
}
static void
token_info_push_gen(struct parser_params *parser, const char *token, size_t len)
{
token_info *ptinfo;
const char *t = lex_p - len;
if (!parser->token_info_enabled) return;
ptinfo = ALLOC(token_info);
ptinfo->token = token;
ptinfo->linenum = ruby_sourceline;
ptinfo->column = token_info_get_column(parser, t);
ptinfo->nonspc = token_info_has_nonspaces(parser, t);
ptinfo->next = parser->token_info;
parser->token_info = ptinfo;
}
static void
token_info_pop_gen(struct parser_params *parser, const char *token, size_t len)
{
int linenum;
token_info *ptinfo = parser->token_info;
const char *t = lex_p - len;
if (!ptinfo) return;
parser->token_info = ptinfo->next;
linenum = ruby_sourceline;
if (parser->token_info_enabled &&
linenum != ptinfo->linenum && !ptinfo->nonspc &&
!token_info_has_nonspaces(parser, t) &&
token_info_get_column(parser, t) != ptinfo->column) {
rb_warn3L(linenum,
"mismatched indentations at '%s' with '%s' at %d",
WARN_S(token), WARN_S(ptinfo->token), WARN_I(ptinfo->linenum));
}
xfree(ptinfo);
}
static int
parser_yyerror(struct parser_params *parser, const char *msg)
{
#ifndef RIPPER
const int max_line_margin = 30;
const char *p, *pe;
const char *pre = "", *post = "";
const char *code = "", *caret = "", *newline = "";
const char *lim;
char *buf;
long len;
int i;
p = lex_p;
lim = p - lex_pbeg > max_line_margin ? p - max_line_margin : lex_pbeg;
while (lim < p) {
if (*(p-1) == '\n') break;
p--;
}
pe = lex_p;
lim = lex_pend - pe > max_line_margin ? pe + max_line_margin : lex_pend;
while (pe < lim) {
if (*pe == '\n') break;
pe++;
}
len = pe - p;
if (len > 4) {
char *p2;
if (len > max_line_margin * 2 + 10) {
if (lex_p - p > max_line_margin) {
p = rb_enc_prev_char(p, lex_p - max_line_margin, pe, rb_enc_get(lex_lastline));
pre = "...";
}
if (pe - lex_p > max_line_margin) {
pe = rb_enc_prev_char(lex_p, lex_p + max_line_margin, pe, rb_enc_get(lex_lastline));
post = "...";
}
len = pe - p;
}
i = (int)(lex_p - p);
buf = ALLOCA_N(char, i+2);
code = p;
caret = p2 = buf;
while (i-- > 0) {
*p2++ = *p++ == '\t' ? '\t' : ' ';
}
*p2++ = '^';
*p2 = '\0';
newline = "\n";
}
else {
len = 0;
}
compile_error(PARSER_ARG "%s%s""%s%.*s%s%s""%s%s",
msg, newline,
pre, (int)len, code, post, newline,
pre, caret);
#else
dispatch1(parse_error, STR_NEW2(msg));
ripper_error();
#endif /* !RIPPER */
return 0;
}
static void parser_prepare(struct parser_params *parser);
#ifndef RIPPER
static VALUE
debug_lines(VALUE fname)
{
ID script_lines;
CONST_ID(script_lines, "SCRIPT_LINES__");
if (rb_const_defined_at(rb_cObject, script_lines)) {
VALUE hash = rb_const_get_at(rb_cObject, script_lines);
if (RB_TYPE_P(hash, T_HASH)) {
VALUE lines = rb_ary_new();
rb_hash_aset(hash, fname, lines);
return lines;
}
}
return 0;
}
static VALUE
coverage(VALUE fname, int n)
{
VALUE coverages = rb_get_coverages();
if (RTEST(coverages) && RBASIC(coverages)->klass == 0) {
VALUE lines = n > 0 ? rb_ary_tmp_new_fill(n) : rb_ary_tmp_new(0);
rb_hash_aset(coverages, fname, lines);
return lines;
}
return 0;
}
static int
e_option_supplied(struct parser_params *parser)
{
return strcmp(ruby_sourcefile, "-e") == 0;
}
static VALUE
yycompile0(VALUE arg)
{
int n;
NODE *tree;
struct parser_params *parser = (struct parser_params *)arg;
VALUE cov = Qfalse;
if (!compile_for_eval && rb_safe_level() == 0) {
ruby_debug_lines = debug_lines(ruby_sourcefile_string);
if (ruby_debug_lines && ruby_sourceline > 0) {
VALUE str = STR_NEW0();
n = ruby_sourceline;
do {
rb_ary_push(ruby_debug_lines, str);
} while (--n);
}
if (!e_option_supplied(parser)) {
ruby_coverage = coverage(ruby_sourcefile_string, ruby_sourceline);
cov = Qtrue;
}
}
parser_prepare(parser);
#ifndef RIPPER
#define RUBY_DTRACE_PARSE_HOOK(name) \
if (RUBY_DTRACE_PARSE_##name##_ENABLED()) { \
RUBY_DTRACE_PARSE_##name(ruby_sourcefile, ruby_sourceline); \
}
RUBY_DTRACE_PARSE_HOOK(BEGIN);
#endif
n = yyparse((void*)parser);
#ifndef RIPPER
RUBY_DTRACE_PARSE_HOOK(END);
#endif
ruby_debug_lines = 0;
ruby_coverage = 0;
lex_strterm = 0;
lex_p = lex_pbeg = lex_pend = 0;
lex_lastline = lex_nextline = 0;
if (parser->error_p) {
VALUE mesg = parser->error_buffer;
if (!mesg) {
mesg = rb_class_new_instance(0, 0, rb_eSyntaxError);
}
rb_set_errinfo(mesg);
return 0;
}
tree = ruby_eval_tree;
if (!tree) {
tree = NEW_NIL();
}
else {
VALUE opt = parser->compile_option;
if (!opt) opt = rb_obj_hide(rb_ident_hash_new());
rb_hash_aset(opt, rb_sym_intern_ascii_cstr("coverage_enabled"), cov);
tree->nd_body = NEW_PRELUDE(ruby_eval_tree_begin, tree->nd_body, opt);
}
return (VALUE)tree;
}
static NODE*
yycompile(struct parser_params *parser, VALUE fname, int line)
{
ruby_sourcefile_string = rb_str_new_frozen(fname);
ruby_sourcefile = RSTRING_PTR(fname);
ruby_sourceline = line - 1;
return (NODE *)rb_suppress_tracing(yycompile0, (VALUE)parser);
}
#endif /* !RIPPER */
static rb_encoding *
must_be_ascii_compatible(VALUE s)
{
rb_encoding *enc = rb_enc_get(s);
if (!rb_enc_asciicompat(enc)) {
rb_raise(rb_eArgError, "invalid source encoding");
}
return enc;
}
static VALUE
lex_get_str(struct parser_params *parser, VALUE s)
{
char *beg, *end, *start;
long len;
beg = RSTRING_PTR(s);
len = RSTRING_LEN(s);
start = beg;
if (lex_gets_ptr) {
if (len == lex_gets_ptr) return Qnil;
beg += lex_gets_ptr;
len -= lex_gets_ptr;
}
end = memchr(beg, '\n', len);
if (end) len = ++end - beg;
lex_gets_ptr += len;
return rb_str_subseq(s, beg - start, len);
}
static VALUE
lex_getline(struct parser_params *parser)
{
VALUE line = (*lex_gets)(parser, lex_input);
if (NIL_P(line)) return line;
must_be_ascii_compatible(line);
#ifndef RIPPER
if (ruby_debug_lines) {
rb_enc_associate(line, current_enc);
rb_ary_push(ruby_debug_lines, line);
}
if (ruby_coverage) {
rb_ary_push(ruby_coverage, Qnil);
}
#endif
return line;
}
static const rb_data_type_t parser_data_type;
#ifndef RIPPER
static NODE*
parser_compile_string(VALUE vparser, VALUE fname, VALUE s, int line)
{
struct parser_params *parser;
NODE *node;
TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, parser);
lex_gets = lex_get_str;
lex_gets_ptr = 0;
lex_input = rb_str_new_frozen(s);
lex_pbeg = lex_p = lex_pend = 0;
node = yycompile(parser, fname, line);
RB_GC_GUARD(vparser); /* prohibit tail call optimization */
return node;
}
NODE*
rb_compile_string(const char *f, VALUE s, int line)
{
must_be_ascii_compatible(s);
return parser_compile_string(rb_parser_new(), rb_filesystem_str_new_cstr(f), s, line);
}
NODE*
rb_parser_compile_string(VALUE vparser, const char *f, VALUE s, int line)
{
return rb_parser_compile_string_path(vparser, rb_filesystem_str_new_cstr(f), s, line);
}
NODE*
rb_parser_compile_string_path(VALUE vparser, VALUE f, VALUE s, int line)
{
must_be_ascii_compatible(s);
return parser_compile_string(vparser, f, s, line);
}
NODE*
rb_compile_cstr(const char *f, const char *s, int len, int line)
{
VALUE str = rb_str_new(s, len);
return parser_compile_string(rb_parser_new(), rb_filesystem_str_new_cstr(f), str, line);
}
NODE*
rb_parser_compile_cstr(VALUE vparser, const char *f, const char *s, int len, int line)
{
VALUE str = rb_str_new(s, len);
return parser_compile_string(vparser, rb_filesystem_str_new_cstr(f), str, line);
}
VALUE rb_io_gets_internal(VALUE io);
static VALUE
lex_io_gets(struct parser_params *parser, VALUE io)
{
return rb_io_gets_internal(io);
}
NODE*
rb_compile_file(const char *f, VALUE file, int start)
{
VALUE vparser = rb_parser_new();
return rb_parser_compile_file(vparser, f, file, start);
}
NODE*
rb_parser_compile_file(VALUE vparser, const char *f, VALUE file, int start)
{
return rb_parser_compile_file_path(vparser, rb_filesystem_str_new_cstr(f), file, start);
}
NODE*
rb_parser_compile_file_path(VALUE vparser, VALUE fname, VALUE file, int start)
{
struct parser_params *parser;
NODE *node;
TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, parser);
lex_gets = lex_io_gets;
lex_input = file;
lex_pbeg = lex_p = lex_pend = 0;
node = yycompile(parser, fname, start);
RB_GC_GUARD(vparser); /* prohibit tail call optimization */
return node;
}
#endif /* !RIPPER */
#define STR_FUNC_ESCAPE 0x01
#define STR_FUNC_EXPAND 0x02
#define STR_FUNC_REGEXP 0x04
#define STR_FUNC_QWORDS 0x08
#define STR_FUNC_SYMBOL 0x10
#define STR_FUNC_INDENT 0x20
#define STR_FUNC_LABEL 0x40
#define STR_TERM_END -1
enum string_type {
str_label = STR_FUNC_LABEL,
str_squote = (0),
str_dquote = (STR_FUNC_EXPAND),
str_xquote = (STR_FUNC_EXPAND),
str_regexp = (STR_FUNC_REGEXP|STR_FUNC_ESCAPE|STR_FUNC_EXPAND),
str_sword = (STR_FUNC_QWORDS),
str_dword = (STR_FUNC_QWORDS|STR_FUNC_EXPAND),
str_ssym = (STR_FUNC_SYMBOL),
str_dsym = (STR_FUNC_SYMBOL|STR_FUNC_EXPAND)
};
static VALUE
parser_str_new(const char *p, long n, rb_encoding *enc, int func, rb_encoding *enc0)
{
VALUE str;
str = rb_enc_str_new(p, n, enc);
if (!(func & STR_FUNC_REGEXP) && rb_enc_asciicompat(enc)) {
if (rb_enc_str_coderange(str) == ENC_CODERANGE_7BIT) {
}
else if (enc0 == rb_usascii_encoding() && enc != rb_utf8_encoding()) {
rb_enc_associate(str, rb_ascii8bit_encoding());
}
}
return str;
}
#define lex_goto_eol(parser) ((parser)->lex.pcur = (parser)->lex.pend)
#define lex_eol_p() (lex_p >= lex_pend)
#define peek(c) peek_n((c), 0)
#define peek_n(c,n) (lex_p+(n) < lex_pend && (c) == (unsigned char)lex_p[n])
#define peekc() peekc_n(0)
#define peekc_n(n) (lex_p+(n) < lex_pend ? (unsigned char)lex_p[n] : -1)
static int
parser_nextline(struct parser_params *parser)
{
VALUE v = lex_nextline;
lex_nextline = 0;
if (!v) {
if (parser->eofp)
return -1;
if (!lex_input || NIL_P(v = lex_getline(parser))) {
parser->eofp = 1;
lex_goto_eol(parser);
return -1;
}
parser->cr_seen = FALSE;
}
#ifdef RIPPER
if (parser->tokp < lex_pend) {
if (!has_delayed_token()) {
parser->delayed = rb_str_buf_new(1024);
rb_enc_associate(parser->delayed, current_enc);
rb_str_buf_cat(parser->delayed,
parser->tokp, lex_pend - parser->tokp);
parser->delayed_line = ruby_sourceline;
parser->delayed_col = (int)(parser->tokp - lex_pbeg);
}
else {
rb_str_buf_cat(parser->delayed,
parser->tokp, lex_pend - parser->tokp);
}
}
#endif
if (heredoc_end > 0) {
ruby_sourceline = heredoc_end;
heredoc_end = 0;
}
ruby_sourceline++;
parser->line_count++;
lex_pbeg = lex_p = RSTRING_PTR(v);
lex_pend = lex_p + RSTRING_LEN(v);
ripper_flush(parser);
lex_lastline = v;
return 0;
}
static int
parser_cr(struct parser_params *parser, int c)
{
if (peek('\n')) {
lex_p++;
c = '\n';
}
else if (!parser->cr_seen) {
parser->cr_seen = TRUE;
/* carried over with lex_nextline for nextc() */
rb_warn0("encountered \\r in middle of line, treated as a mere space");
}
return c;
}
static inline int
parser_nextc(struct parser_params *parser)
{
int c;
if (UNLIKELY(lex_p == lex_pend)) {
if (parser_nextline(parser)) return -1;
}
c = (unsigned char)*lex_p++;
if (UNLIKELY(c == '\r')) {
c = parser_cr(parser, c);
}
return c;
}
static void
parser_pushback(struct parser_params *parser, int c)
{
if (c == -1) return;
lex_p--;
if (lex_p > lex_pbeg && lex_p[0] == '\n' && lex_p[-1] == '\r') {
lex_p--;
}
}
#define was_bol() (lex_p == lex_pbeg + 1)
#define tokfix() (tokenbuf[tokidx]='\0')
#define tok() tokenbuf
#define toklen() tokidx
#define toklast() (tokidx>0?tokenbuf[tokidx-1]:0)
static char*
parser_newtok(struct parser_params *parser)
{
tokidx = 0;
tokline = ruby_sourceline;
if (!tokenbuf) {
toksiz = 60;
tokenbuf = ALLOC_N(char, 60);
}
if (toksiz > 4096) {
toksiz = 60;
REALLOC_N(tokenbuf, char, 60);
}
return tokenbuf;
}
static char *
parser_tokspace(struct parser_params *parser, int n)
{
tokidx += n;
if (tokidx >= toksiz) {
do {toksiz *= 2;} while (toksiz < tokidx);
REALLOC_N(tokenbuf, char, toksiz);
}
return &tokenbuf[tokidx-n];
}
static void
parser_tokadd(struct parser_params *parser, int c)
{
tokenbuf[tokidx++] = (char)c;
if (tokidx >= toksiz) {
toksiz *= 2;
REALLOC_N(tokenbuf, char, toksiz);
}
}
static int
parser_tok_hex(struct parser_params *parser, size_t *numlen)
{
int c;
c = scan_hex(lex_p, 2, numlen);
if (!*numlen) {
yyerror("invalid hex escape");
return 0;
}
lex_p += *numlen;
return c;
}
#define tokcopy(n) memcpy(tokspace(n), lex_p - (n), (n))
static int
parser_tokadd_codepoint(struct parser_params *parser, rb_encoding **encp,
int regexp_literal, int wide)
{
size_t numlen;
int codepoint = scan_hex(lex_p, wide ? 6 : 4, &numlen);
if (wide ? (numlen == 0) : (numlen < 4)) {
yyerror("invalid Unicode escape");
return FALSE;
}
if (codepoint > 0x10ffff) {
yyerror("invalid Unicode codepoint (too large)");
return FALSE;
}
if ((codepoint & 0xfffff800) == 0xd800) {
yyerror("invalid Unicode codepoint");
return FALSE;
}
lex_p += numlen;
if (regexp_literal) {
tokcopy((int)numlen);
}
else if (codepoint >= 0x80) {
*encp = rb_utf8_encoding();
tokaddmbc(codepoint, *encp);
}
else {
tokadd(codepoint);
}
return TRUE;
}
/* return value is for ?\u3042 */
static int
parser_tokadd_utf8(struct parser_params *parser, rb_encoding **encp,
int string_literal, int symbol_literal, int regexp_literal)
{
/*
* If string_literal is true, then we allow multiple codepoints
* in \u{}, and add the codepoints to the current token.
* Otherwise we're parsing a character literal and return a single
* codepoint without adding it
*/
const int open_brace = '{', close_brace = '}';
if (regexp_literal) { tokadd('\\'); tokadd('u'); }
if (peek(open_brace)) { /* handle \u{...} form */
int c, last = nextc();
do c = nextc(); while (ISSPACE(c));
pushback(c);
while (!string_literal || c != close_brace) {
if (regexp_literal) tokadd(last);
if (!parser_tokadd_codepoint(parser, encp, regexp_literal, TRUE)) {
return 0;
}
while (ISSPACE(c = nextc())) last = c;
pushback(c);
if (!string_literal) break;
}
if (c != close_brace) {
yyerror("unterminated Unicode escape");
return 0;
}
if (regexp_literal) tokadd(close_brace);
nextc();
}
else { /* handle \uxxxx form */
if (!parser_tokadd_codepoint(parser, encp, regexp_literal, FALSE)) {
return 0;
}
}
return TRUE;
}
#define ESCAPE_CONTROL 1
#define ESCAPE_META 2
static int
parser_read_escape(struct parser_params *parser, int flags,
rb_encoding **encp)
{
int c;
size_t numlen;
switch (c = nextc()) {
case '\\': /* Backslash */
return c;
case 'n': /* newline */
return '\n';
case 't': /* horizontal tab */
return '\t';
case 'r': /* carriage-return */
return '\r';
case 'f': /* form-feed */
return '\f';
case 'v': /* vertical tab */
return '\13';
case 'a': /* alarm(bell) */
return '\007';
case 'e': /* escape */
return 033;
case '0': case '1': case '2': case '3': /* octal constant */
case '4': case '5': case '6': case '7':
pushback(c);
c = scan_oct(lex_p, 3, &numlen);
lex_p += numlen;
return c;
case 'x': /* hex constant */
c = tok_hex(&numlen);
if (numlen == 0) return 0;
return c;
case 'b': /* backspace */
return '\010';
case 's': /* space */
return ' ';
case 'M':
if (flags & ESCAPE_META) goto eof;
if ((c = nextc()) != '-') {
pushback(c);
goto eof;
}
if ((c = nextc()) == '\\') {
if (peek('u')) goto eof;
return read_escape(flags|ESCAPE_META, encp) | 0x80;
}
else if (c == -1 || !ISASCII(c)) goto eof;
else {
return ((c & 0xff) | 0x80);
}
case 'C':
if ((c = nextc()) != '-') {
pushback(c);
goto eof;
}
case 'c':
if (flags & ESCAPE_CONTROL) goto eof;
if ((c = nextc())== '\\') {
if (peek('u')) goto eof;
c = read_escape(flags|ESCAPE_CONTROL, encp);
}
else if (c == '?')
return 0177;
else if (c == -1 || !ISASCII(c)) goto eof;
return c & 0x9f;
eof:
case -1:
yyerror("Invalid escape character syntax");
return '\0';
default:
return c;
}
}
static void
parser_tokaddmbc(struct parser_params *parser, int c, rb_encoding *enc)
{
int len = rb_enc_codelen(c, enc);
rb_enc_mbcput(c, tokspace(len), enc);
}
static int
parser_tokadd_escape(struct parser_params *parser, rb_encoding **encp)
{
int c;
int flags = 0;
size_t numlen;
first:
switch (c = nextc()) {
case '\n':
return 0; /* just ignore */
case '0': case '1': case '2': case '3': /* octal constant */
case '4': case '5': case '6': case '7':
{
ruby_scan_oct(--lex_p, 3, &numlen);
if (numlen == 0) goto eof;
lex_p += numlen;
tokcopy((int)numlen + 1);
}
return 0;
case 'x': /* hex constant */
{
tok_hex(&numlen);
if (numlen == 0) return -1;
tokcopy((int)numlen + 2);
}
return 0;
case 'M':
if (flags & ESCAPE_META) goto eof;
if ((c = nextc()) != '-') {
pushback(c);
goto eof;
}
tokcopy(3);
flags |= ESCAPE_META;
goto escaped;
case 'C':
if (flags & ESCAPE_CONTROL) goto eof;
if ((c = nextc()) != '-') {
pushback(c);
goto eof;
}
tokcopy(3);
goto escaped;
case 'c':
if (flags & ESCAPE_CONTROL) goto eof;
tokcopy(2);
flags |= ESCAPE_CONTROL;
escaped:
if ((c = nextc()) == '\\') {
goto first;
}
else if (c == -1) goto eof;
tokadd(c);
return 0;
eof:
case -1:
yyerror("Invalid escape character syntax");
return -1;
default:
tokadd('\\');
tokadd(c);
}
return 0;
}
static int
parser_regx_options(struct parser_params *parser)
{
int kcode = 0;
int kopt = 0;
int options = 0;
int c, opt, kc;
newtok();
while (c = nextc(), ISALPHA(c)) {
if (c == 'o') {
options |= RE_OPTION_ONCE;
}
else if (rb_char_to_option_kcode(c, &opt, &kc)) {
if (kc >= 0) {
if (kc != rb_ascii8bit_encindex()) kcode = c;
kopt = opt;
}
else {
options |= opt;
}
}
else {
tokadd(c);
}
}
options |= kopt;
pushback(c);
if (toklen()) {
tokfix();
compile_error(PARSER_ARG "unknown regexp option%s - %s",
toklen() > 1 ? "s" : "", tok());
}
return options | RE_OPTION_ENCODING(kcode);
}
static void
dispose_string(VALUE str)
{
rb_str_free(str);
rb_gc_force_recycle(str);
}
static int
parser_tokadd_mbchar(struct parser_params *parser, int c)
{
int len = parser_precise_mbclen();
if (!MBCLEN_CHARFOUND_P(len)) {
compile_error(PARSER_ARG "invalid multibyte char (%s)", parser_encoding_name());
return -1;
}
tokadd(c);
lex_p += --len;
if (len > 0) tokcopy(len);
return c;
}
#define tokadd_mbchar(c) parser_tokadd_mbchar(parser, (c))
static inline int
simple_re_meta(int c)
{
switch (c) {
case '$': case '*': case '+': case '.':
case '?': case '^': case '|':
case ')': case ']': case '}': case '>':
return TRUE;
default:
return FALSE;
}
}
static int
parser_update_heredoc_indent(struct parser_params *parser, int c)
{
if (heredoc_line_indent == -1) {
if (c == '\n') heredoc_line_indent = 0;
}
else {
if (c == ' ') {
heredoc_line_indent++;
return TRUE;
}
else if (c == '\t') {
int w = (heredoc_line_indent / TAB_WIDTH) + 1;
heredoc_line_indent = w * TAB_WIDTH;
return TRUE;
}
else if (c != '\n') {
if (heredoc_indent > heredoc_line_indent) {
heredoc_indent = heredoc_line_indent;
}
heredoc_line_indent = -1;
}
}
return FALSE;
}
static int
parser_tokadd_string(struct parser_params *parser,
int func, int term, int paren, long *nest,
rb_encoding **encp)
{
int c;
int has_nonascii = 0;
rb_encoding *enc = *encp;
char *errbuf = 0;
static const char mixed_msg[] = "%s mixed within %s source";
#define mixed_error(enc1, enc2) if (!errbuf) { \
size_t len = sizeof(mixed_msg) - 4; \
len += strlen(rb_enc_name(enc1)); \
len += strlen(rb_enc_name(enc2)); \
errbuf = ALLOCA_N(char, len); \
snprintf(errbuf, len, mixed_msg, \
rb_enc_name(enc1), \
rb_enc_name(enc2)); \
yyerror(errbuf); \
}
#define mixed_escape(beg, enc1, enc2) do { \
const char *pos = lex_p; \
lex_p = (beg); \
mixed_error((enc1), (enc2)); \
lex_p = pos; \
} while (0)
while ((c = nextc()) != -1) {
if (heredoc_indent > 0) {
parser_update_heredoc_indent(parser, c);
}
if (paren && c == paren) {
++*nest;
}
else if (c == term) {
if (!nest || !*nest) {
pushback(c);
break;
}
--*nest;
}
else if ((func & STR_FUNC_EXPAND) && c == '#' && lex_p < lex_pend) {
int c2 = *lex_p;
if (c2 == '$' || c2 == '@' || c2 == '{') {
pushback(c);
break;
}
}
else if (c == '\\') {
const char *beg = lex_p - 1;
c = nextc();
switch (c) {
case '\n':
if (func & STR_FUNC_QWORDS) break;
if (func & STR_FUNC_EXPAND) continue;
tokadd('\\');
break;
case '\\':
if (func & STR_FUNC_ESCAPE) tokadd(c);
break;
case 'u':
if ((func & STR_FUNC_EXPAND) == 0) {
tokadd('\\');
break;
}
parser_tokadd_utf8(parser, &enc, 1,
func & STR_FUNC_SYMBOL,
func & STR_FUNC_REGEXP);
if (has_nonascii && enc != *encp) {
mixed_escape(beg, enc, *encp);
}
continue;
default:
if (c == -1) return -1;
if (!ISASCII(c)) {
if ((func & STR_FUNC_EXPAND) == 0) tokadd('\\');
goto non_ascii;
}
if (func & STR_FUNC_REGEXP) {
if (c == term && !simple_re_meta(c)) {
tokadd(c);
continue;
}
pushback(c);
if ((c = tokadd_escape(&enc)) < 0)
return -1;
if (has_nonascii && enc != *encp) {
mixed_escape(beg, enc, *encp);
}
continue;
}
else if (func & STR_FUNC_EXPAND) {
pushback(c);
if (func & STR_FUNC_ESCAPE) tokadd('\\');
c = read_escape(0, &enc);
}
else if ((func & STR_FUNC_QWORDS) && ISSPACE(c)) {
/* ignore backslashed spaces in %w */
}
else if (c != term && !(paren && c == paren)) {
tokadd('\\');
pushback(c);
continue;
}
}
}
else if (!parser_isascii()) {
non_ascii:
has_nonascii = 1;
if (enc != *encp) {
mixed_error(enc, *encp);
continue;
}
if (tokadd_mbchar(c) == -1) return -1;
continue;
}
else if ((func & STR_FUNC_QWORDS) && ISSPACE(c)) {
pushback(c);
break;
}
if (c & 0x80) {
has_nonascii = 1;
if (enc != *encp) {
mixed_error(enc, *encp);
continue;
}
}
tokadd(c);
}
*encp = enc;
return c;
}
#define NEW_STRTERM(func, term, paren) \
rb_node_newnode(NODE_STRTERM, (func), (term) | ((paren) << (CHAR_BIT * 2)), 0)
#ifdef RIPPER
static void
ripper_flush_string_content(struct parser_params *parser, rb_encoding *enc)
{
VALUE content = yylval.val;
if (!ripper_is_node_yylval(content))
content = ripper_new_yylval(0, 0, content);
if (has_delayed_token()) {
ptrdiff_t len = lex_p - parser->tokp;
if (len > 0) {
rb_enc_str_buf_cat(parser->delayed, parser->tokp, len, enc);
}
dispatch_delayed_token(tSTRING_CONTENT);
parser->tokp = lex_p;
RNODE(content)->nd_rval = yylval.val;
}
dispatch_scan_event(tSTRING_CONTENT);
if (yylval.val != content)
RNODE(content)->nd_rval = yylval.val;
yylval.val = content;
}
#define flush_string_content(enc) ripper_flush_string_content(parser, (enc))
#else
#define flush_string_content(enc) ((void)(enc))
#endif
RUBY_FUNC_EXPORTED const unsigned int ruby_global_name_punct_bits[(0x7e - 0x20 + 31) / 32];
/* this can be shared with ripper, since it's independent from struct
* parser_params. */
#ifndef RIPPER
#define BIT(c, idx) (((c) / 32 - 1 == idx) ? (1U << ((c) % 32)) : 0)
#define SPECIAL_PUNCT(idx) ( \
BIT('~', idx) | BIT('*', idx) | BIT('$', idx) | BIT('?', idx) | \
BIT('!', idx) | BIT('@', idx) | BIT('/', idx) | BIT('\\', idx) | \
BIT(';', idx) | BIT(',', idx) | BIT('.', idx) | BIT('=', idx) | \
BIT(':', idx) | BIT('<', idx) | BIT('>', idx) | BIT('\"', idx) | \
BIT('&', idx) | BIT('`', idx) | BIT('\'', idx) | BIT('+', idx) | \
BIT('0', idx))
const unsigned int ruby_global_name_punct_bits[] = {
SPECIAL_PUNCT(0),
SPECIAL_PUNCT(1),
SPECIAL_PUNCT(2),
};
#undef BIT
#undef SPECIAL_PUNCT
#endif
static int
parser_peek_variable_name(struct parser_params *parser)
{
int c;
const char *p = lex_p;
if (p + 1 >= lex_pend) return 0;
c = *p++;
switch (c) {
case '$':
if ((c = *p) == '-') {
if (++p >= lex_pend) return 0;
c = *p;
}
else if (is_global_name_punct(c) || ISDIGIT(c)) {
return tSTRING_DVAR;
}
break;
case '@':
if ((c = *p) == '@') {
if (++p >= lex_pend) return 0;
c = *p;
}
break;
case '{':
lex_p = p;
command_start = TRUE;
return tSTRING_DBEG;
default:
return 0;
}
if (!ISASCII(c) || c == '_' || ISALPHA(c))
return tSTRING_DVAR;
return 0;
}
static inline int
parser_string_term(struct parser_params *parser, int func)
{
if (!(func & STR_FUNC_REGEXP)) return tSTRING_END;
set_yylval_num(regx_options());
dispatch_scan_event(tREGEXP_END);
return tREGEXP_END;
}
static int
parser_parse_string(struct parser_params *parser, NODE *quote)
{
int func = (int)quote->nd_func;
int term = nd_term(quote);
int paren = nd_paren(quote);
int c, space = 0;
rb_encoding *enc = current_enc;
if (term == STR_TERM_END) return tSTRING_END;
c = nextc();
if ((func & STR_FUNC_QWORDS) && ISSPACE(c)) {
do {c = nextc();} while (ISSPACE(c));
space = 1;
}
if (c == term && !quote->nd_nest) {
if (func & STR_FUNC_QWORDS) {
quote->u2.id = STR_TERM_END;
return ' ';
}
return parser_string_term(parser, func);
}
if (space) {
pushback(c);
return ' ';
}
newtok();
if ((func & STR_FUNC_EXPAND) && c == '#') {
int t = parser_peek_variable_name(parser);
if (t) return t;
tokadd('#');
c = nextc();
}
pushback(c);
if (tokadd_string(func, term, paren, &quote->nd_nest,
&enc) == -1) {
ruby_sourceline = nd_line(quote);
if (func & STR_FUNC_REGEXP) {
if (parser->eofp)
compile_error(PARSER_ARG "unterminated regexp meets end of file");
return tREGEXP_END;
}
else {
if (parser->eofp)
compile_error(PARSER_ARG "unterminated string meets end of file");
return tSTRING_END;
}
}
tokfix();
set_yylval_str(STR_NEW3(tok(), toklen(), enc, func));
flush_string_content(enc);
return tSTRING_CONTENT;
}
static int
parser_heredoc_identifier(struct parser_params *parser)
{
int c = nextc(), term, func = 0;
int token = tSTRING_BEG;
long len;
int newline = 0;
int indent = 0;
if (c == '-') {
c = nextc();
func = STR_FUNC_INDENT;
}
else if (c == '~') {
c = nextc();
func = STR_FUNC_INDENT;
indent = INT_MAX;
}
switch (c) {
case '\'':
func |= str_squote; goto quoted;
case '"':
func |= str_dquote; goto quoted;
case '`':
token = tXSTRING_BEG;
func |= str_xquote; goto quoted;
quoted:
newtok();
tokadd(func);
term = c;
while ((c = nextc()) != -1 && c != term) {
if (tokadd_mbchar(c) == -1) return 0;
if (!newline && c == '\n') newline = 1;
else if (newline) newline = 2;
}
if (c == -1) {
compile_error(PARSER_ARG "unterminated here document identifier");
return 0;
}
switch (newline) {
case 1:
rb_warn0("here document identifier ends with a newline");
if (--tokidx > 0 && tokenbuf[tokidx] == '\r') --tokidx;
break;
case 2:
compile_error(PARSER_ARG "here document identifier across newlines, never match");
return -1;
}
break;
default:
if (!parser_is_identchar()) {
pushback(c);
if (func & STR_FUNC_INDENT) {
pushback(indent > 0 ? '~' : '-');
}
return 0;
}
newtok();
tokadd(func |= str_dquote);
do {
if (tokadd_mbchar(c) == -1) return 0;
} while ((c = nextc()) != -1 && parser_is_identchar());
pushback(c);
break;
}
tokfix();
dispatch_scan_event(tHEREDOC_BEG);
len = lex_p - lex_pbeg;
lex_goto_eol(parser);
lex_strterm = rb_node_newnode(NODE_HEREDOC,
STR_NEW(tok(), toklen()), /* nd_lit */
len, /* nd_nth */
lex_lastline); /* nd_orig */
parser_set_line(lex_strterm, ruby_sourceline);
ripper_flush(parser);
heredoc_indent = indent;
heredoc_line_indent = 0;
return token;
}
static void
parser_heredoc_restore(struct parser_params *parser, NODE *here)
{
VALUE line;
lex_strterm = 0;
line = here->nd_orig;
lex_lastline = line;
lex_pbeg = RSTRING_PTR(line);
lex_pend = lex_pbeg + RSTRING_LEN(line);
lex_p = lex_pbeg + here->nd_nth;
heredoc_end = ruby_sourceline;
ruby_sourceline = nd_line(here);
dispose_string(here->nd_lit);
rb_gc_force_recycle((VALUE)here);
ripper_flush(parser);
}
static int
dedent_string(VALUE string, int width)
{
char *str;
long len;
int i, col = 0;
RSTRING_GETMEM(string, str, len);
for (i = 0; i < len && col < width; i++) {
if (str[i] == ' ') {
col++;
}
else if (str[i] == '\t') {
int n = TAB_WIDTH * (col / TAB_WIDTH + 1);
if (n > width) break;
col = n;
}
else {
break;
}
}
MEMMOVE(str, str + i, char, len - i);
rb_str_set_len(string, len - i);
return i;
}
#ifndef RIPPER
static NODE *
parser_heredoc_dedent(struct parser_params *parser, NODE *root)
{
NODE *node, *str_node;
int bol = TRUE;
int indent = heredoc_indent;
if (indent <= 0) return root;
heredoc_indent = 0;
if (!root) return root;
node = str_node = root;
if (nd_type(root) == NODE_ARRAY) str_node = root->nd_head;
while (str_node) {
VALUE lit = str_node->nd_lit;
if (bol) dedent_string(lit, indent);
bol = TRUE;
str_node = 0;
while ((node = node->nd_next) != 0 && nd_type(node) == NODE_ARRAY) {
if ((str_node = node->nd_head) != 0) {
enum node_type type = nd_type(str_node);
if (type == NODE_STR || type == NODE_DSTR) break;
bol = FALSE;
str_node = 0;
}
}
}
return root;
}
#else /* RIPPER */
static VALUE
parser_heredoc_dedent(struct parser_params *parser, VALUE array)
{
int indent = heredoc_indent;
if (indent <= 0) return array;
heredoc_indent = 0;
dispatch2(heredoc_dedent, array, INT2NUM(indent));
return array;
}
static VALUE
parser_dedent_string(VALUE self, VALUE input, VALUE width)
{
int wid, col;
StringValue(input);
wid = NUM2UINT(width);
rb_str_modify(input);
col = dedent_string(input, wid);
return INT2NUM(col);
}
#endif
static int
parser_whole_match_p(struct parser_params *parser,
const char *eos, long len, int indent)
{
const char *p = lex_pbeg;
long n;
if (indent) {
while (*p && ISSPACE(*p)) p++;
}
n = lex_pend - (p + len);
if (n < 0) return FALSE;
if (n > 0 && p[len] != '\n') {
if (p[len] != '\r') return FALSE;
if (n <= 1 || p[len+1] != '\n') return FALSE;
}
return strncmp(eos, p, len) == 0;
}
#define NUM_SUFFIX_R (1<<0)
#define NUM_SUFFIX_I (1<<1)
#define NUM_SUFFIX_ALL 3
static int
parser_number_literal_suffix(struct parser_params *parser, int mask)
{
int c, result = 0;
const char *lastp = lex_p;
while ((c = nextc()) != -1) {
if ((mask & NUM_SUFFIX_I) && c == 'i') {
result |= (mask & NUM_SUFFIX_I);
mask &= ~NUM_SUFFIX_I;
/* r after i, rational of complex is disallowed */
mask &= ~NUM_SUFFIX_R;
continue;
}
if ((mask & NUM_SUFFIX_R) && c == 'r') {
result |= (mask & NUM_SUFFIX_R);
mask &= ~NUM_SUFFIX_R;
continue;
}
if (!ISASCII(c) || ISALPHA(c) || c == '_') {
lex_p = lastp;
return 0;
}
pushback(c);
if (c == '.') {
c = peekc_n(1);
if (ISDIGIT(c)) {
yyerror("unexpected fraction part after numeric literal");
lex_p += 2;
while (parser_is_identchar()) nextc();
}
}
break;
}
return result;
}
static int
parser_set_number_literal(struct parser_params *parser, VALUE v, int type, int suffix)
{
if (suffix & NUM_SUFFIX_I) {
v = rb_complex_raw(INT2FIX(0), v);
type = tIMAGINARY;
}
set_yylval_literal(v);
SET_LEX_STATE(EXPR_ENDARG);
return type;
}
static int
parser_set_integer_literal(struct parser_params *parser, VALUE v, int suffix)
{
int type = tINTEGER;
if (suffix & NUM_SUFFIX_R) {
v = rb_rational_raw1(v);
type = tRATIONAL;
}
return set_number_literal(v, type, suffix);
}
#ifdef RIPPER
static void
ripper_dispatch_heredoc_end(struct parser_params *parser)
{
VALUE str;
if (has_delayed_token())
dispatch_delayed_token(tSTRING_CONTENT);
str = STR_NEW(parser->tokp, lex_pend - parser->tokp);
ripper_dispatch1(parser, ripper_token2eventid(tHEREDOC_END), str);
lex_goto_eol(parser);
ripper_flush(parser);
}
#define dispatch_heredoc_end() ripper_dispatch_heredoc_end(parser)
#else
#define dispatch_heredoc_end() ((void)0)
#endif
static int
parser_here_document(struct parser_params *parser, NODE *here)
{
int c, func, indent = 0;
const char *eos, *p, *pend;
long len;
VALUE str = 0;
rb_encoding *enc = current_enc;
eos = RSTRING_PTR(here->nd_lit);
len = RSTRING_LEN(here->nd_lit) - 1;
indent = (func = *eos++) & STR_FUNC_INDENT;
if ((c = nextc()) == -1) {
error:
compile_error(PARSER_ARG "can't find string \"%s\" anywhere before EOF", eos);
#ifdef RIPPER
if (!has_delayed_token()) {
dispatch_scan_event(tSTRING_CONTENT);
}
else {
if (str) {
rb_str_append(parser->delayed, str);
}
else if ((len = lex_p - parser->tokp) > 0) {
if (!(func & STR_FUNC_REGEXP) && rb_enc_asciicompat(enc)) {
int cr = ENC_CODERANGE_UNKNOWN;
rb_str_coderange_scan_restartable(parser->tokp, lex_p, enc, &cr);
if (cr != ENC_CODERANGE_7BIT &&
current_enc == rb_usascii_encoding() &&
enc != rb_utf8_encoding()) {
enc = rb_ascii8bit_encoding();
}
}
rb_enc_str_buf_cat(parser->delayed, parser->tokp, len, enc);
}
dispatch_delayed_token(tSTRING_CONTENT);
}
lex_goto_eol(parser);
#endif
restore:
heredoc_restore(lex_strterm);
return 0;
}
if (was_bol() && whole_match_p(eos, len, indent)) {
dispatch_heredoc_end();
heredoc_restore(lex_strterm);
return tSTRING_END;
}
if (!(func & STR_FUNC_EXPAND)) {
do {
p = RSTRING_PTR(lex_lastline);
pend = lex_pend;
if (pend > p) {
switch (pend[-1]) {
case '\n':
if (--pend == p || pend[-1] != '\r') {
pend++;
break;
}
case '\r':
--pend;
}
}
if (heredoc_indent > 0) {
long i = 0;
while (p + i < pend && parser_update_heredoc_indent(parser, p[i]))
i++;
heredoc_line_indent = 0;
}
if (str)
rb_str_cat(str, p, pend - p);
else
str = STR_NEW(p, pend - p);
if (pend < lex_pend) rb_str_cat(str, "\n", 1);
lex_goto_eol(parser);
if (heredoc_indent > 0) {
set_yylval_str(str);
flush_string_content(enc);
return tSTRING_CONTENT;
}
if (nextc() == -1) {
if (str) {
dispose_string(str);
str = 0;
}
goto error;
}
} while (!whole_match_p(eos, len, indent));
}
else {
/* int mb = ENC_CODERANGE_7BIT, *mbp = &mb;*/
newtok();
if (c == '#') {
int t = parser_peek_variable_name(parser);
if (t) return t;
tokadd('#');
c = nextc();
}
do {
pushback(c);
if ((c = tokadd_string(func, '\n', 0, NULL, &enc)) == -1) {
if (parser->eofp) goto error;
goto restore;
}
if (c != '\n') {
flush:
set_yylval_str(STR_NEW3(tok(), toklen(), enc, func));
flush_string_content(enc);
return tSTRING_CONTENT;
}
tokadd(nextc());
if (heredoc_indent > 0) {
lex_goto_eol(parser);
goto flush;
}
/* if (mbp && mb == ENC_CODERANGE_UNKNOWN) mbp = 0;*/
if ((c = nextc()) == -1) goto error;
} while (!whole_match_p(eos, len, indent));
str = STR_NEW3(tok(), toklen(), enc, func);
}
dispatch_heredoc_end();
#ifdef RIPPER
str = ripper_new_yylval(ripper_token2eventid(tSTRING_CONTENT),
yylval.val, str);
#endif
heredoc_restore(lex_strterm);
lex_strterm = NEW_STRTERM(func, STR_TERM_END, 0);
set_yylval_str(str);
return tSTRING_CONTENT;
}
#include "lex.c"
static void
arg_ambiguous_gen(struct parser_params *parser, char c)
{
#ifndef RIPPER
rb_warning1("ambiguous first argument; put parentheses or a space even after `%c' operator", WARN_I(c));
#else
dispatch1(arg_ambiguous, rb_usascii_str_new(&c, 1));
#endif
}
#define arg_ambiguous(c) (arg_ambiguous_gen(parser, (c)), 1)
static ID
formal_argument_gen(struct parser_params *parser, ID lhs)
{
switch (id_type(lhs)) {
case ID_LOCAL:
break;
#ifndef RIPPER
case ID_CONST:
yyerror("formal argument cannot be a constant");
return 0;
case ID_INSTANCE:
yyerror("formal argument cannot be an instance variable");
return 0;
case ID_GLOBAL:
yyerror("formal argument cannot be a global variable");
return 0;
case ID_CLASS:
yyerror("formal argument cannot be a class variable");
return 0;
default:
yyerror("formal argument must be local variable");
return 0;
#else
default:
lhs = dispatch1(param_error, lhs);
ripper_error();
return 0;
#endif
}
shadowing_lvar(lhs);
return lhs;
}
static int
lvar_defined_gen(struct parser_params *parser, ID id)
{
return (dyna_in_block() && dvar_defined_get(id)) || local_id(id);
}
/* emacsen -*- hack */
static long
parser_encode_length(struct parser_params *parser, const char *name, long len)
{
long nlen;
if (len > 5 && name[nlen = len - 5] == '-') {
if (rb_memcicmp(name + nlen + 1, "unix", 4) == 0)
return nlen;
}
if (len > 4 && name[nlen = len - 4] == '-') {
if (rb_memcicmp(name + nlen + 1, "dos", 3) == 0)
return nlen;
if (rb_memcicmp(name + nlen + 1, "mac", 3) == 0 &&
!(len == 8 && rb_memcicmp(name, "utf8-mac", len) == 0))
/* exclude UTF8-MAC because the encoding named "UTF8" doesn't exist in Ruby */
return nlen;
}
return len;
}
static void
parser_set_encode(struct parser_params *parser, const char *name)
{
int idx = rb_enc_find_index(name);
rb_encoding *enc;
VALUE excargs[3];
if (idx < 0) {
excargs[1] = rb_sprintf("unknown encoding name: %s", name);
error:
excargs[0] = rb_eArgError;
excargs[2] = rb_make_backtrace();
rb_ary_unshift(excargs[2], rb_sprintf("%"PRIsVALUE":%d", ruby_sourcefile_string, ruby_sourceline));
rb_exc_raise(rb_make_exception(3, excargs));
}
enc = rb_enc_from_index(idx);
if (!rb_enc_asciicompat(enc)) {
excargs[1] = rb_sprintf("%s is not ASCII compatible", rb_enc_name(enc));
goto error;
}
parser->enc = enc;
#ifndef RIPPER
if (ruby_debug_lines) {
VALUE lines = ruby_debug_lines;
long i, n = RARRAY_LEN(lines);
for (i = 0; i < n; ++i) {
rb_enc_associate_index(RARRAY_AREF(lines, i), idx);
}
}
#endif
}
static int
comment_at_top(struct parser_params *parser)
{
const char *p = lex_pbeg, *pend = lex_p - 1;
if (parser->line_count != (parser->has_shebang ? 2 : 1)) return 0;
while (p < pend) {
if (!ISSPACE(*p)) return 0;
p++;
}
return 1;
}
typedef long (*rb_magic_comment_length_t)(struct parser_params *parser, const char *name, long len);
typedef void (*rb_magic_comment_setter_t)(struct parser_params *parser, const char *name, const char *val);
static void
magic_comment_encoding(struct parser_params *parser, const char *name, const char *val)
{
if (!comment_at_top(parser)) {
return;
}
parser_set_encode(parser, val);
}
static int
parser_get_bool(struct parser_params *parser, const char *name, const char *val)
{
switch (*val) {
case 't': case 'T':
if (strcasecmp(val, "true") == 0) {
return TRUE;
}
break;
case 'f': case 'F':
if (strcasecmp(val, "false") == 0) {
return FALSE;
}
break;
}
rb_compile_warning(ruby_sourcefile, ruby_sourceline, "invalid value for %s: %s", name, val);
return -1;
}
static void
parser_set_token_info(struct parser_params *parser, const char *name, const char *val)
{
int b = parser_get_bool(parser, name, val);
if (b >= 0) parser->token_info_enabled = b;
}
static void
parser_set_compile_option_flag(struct parser_params *parser, const char *name, const char *val)
{
int b;
if (parser->token_seen) {
rb_warning1("`%s' is ignored after any tokens", WARN_S(name));
return;
}
b = parser_get_bool(parser, name, val);
if (b < 0) return;
if (!parser->compile_option)
parser->compile_option = rb_obj_hide(rb_ident_hash_new());
rb_hash_aset(parser->compile_option, ID2SYM(rb_intern(name)),
(b ? Qtrue : Qfalse));
}
# if WARN_PAST_SCOPE
static void
parser_set_past_scope(struct parser_params *parser, const char *name, const char *val)
{
int b = parser_get_bool(parser, name, val);
if (b >= 0) parser->past_scope_enabled = b;
}
# endif
struct magic_comment {
const char *name;
rb_magic_comment_setter_t func;
rb_magic_comment_length_t length;
};
static const struct magic_comment magic_comments[] = {
{"coding", magic_comment_encoding, parser_encode_length},
{"encoding", magic_comment_encoding, parser_encode_length},
{"frozen_string_literal", parser_set_compile_option_flag},
{"warn_indent", parser_set_token_info},
# if WARN_PAST_SCOPE
{"warn_past_scope", parser_set_past_scope},
# endif
};
static const char *
magic_comment_marker(const char *str, long len)
{
long i = 2;
while (i < len) {
switch (str[i]) {
case '-':
if (str[i-1] == '*' && str[i-2] == '-') {
return str + i + 1;
}
i += 2;
break;
case '*':
if (i + 1 >= len) return 0;
if (str[i+1] != '-') {
i += 4;
}
else if (str[i-1] != '-') {
i += 2;
}
else {
return str + i + 2;
}
break;
default:
i += 3;
break;
}
}
return 0;
}
static int
parser_magic_comment(struct parser_params *parser, const char *str, long len)
{
int indicator = 0;
VALUE name = 0, val = 0;
const char *beg, *end, *vbeg, *vend;
#define str_copy(_s, _p, _n) ((_s) \
? (void)(rb_str_resize((_s), (_n)), \
MEMCPY(RSTRING_PTR(_s), (_p), char, (_n)), (_s)) \
: (void)((_s) = STR_NEW((_p), (_n))))
if (len <= 7) return FALSE;
if (!!(beg = magic_comment_marker(str, len))) {
if (!(end = magic_comment_marker(beg, str + len - beg)))
return FALSE;
indicator = TRUE;
str = beg;
len = end - beg - 3;
}
/* %r"([^\\s\'\":;]+)\\s*:\\s*(\"(?:\\\\.|[^\"])*\"|[^\"\\s;]+)[\\s;]*" */
while (len > 0) {
const struct magic_comment *p = magic_comments;
char *s;
int i;
long n = 0;
for (; len > 0 && *str; str++, --len) {
switch (*str) {
case '\'': case '"': case ':': case ';':
continue;
}
if (!ISSPACE(*str)) break;
}
for (beg = str; len > 0; str++, --len) {
switch (*str) {
case '\'': case '"': case ':': case ';':
break;
default:
if (ISSPACE(*str)) break;
continue;
}
break;
}
for (end = str; len > 0 && ISSPACE(*str); str++, --len);
if (!len) break;
if (*str != ':') {
if (!indicator) return FALSE;
continue;
}
do str++; while (--len > 0 && ISSPACE(*str));
if (!len) break;
if (*str == '"') {
for (vbeg = ++str; --len > 0 && *str != '"'; str++) {
if (*str == '\\') {
--len;
++str;
}
}
vend = str;
if (len) {
--len;
++str;
}
}
else {
for (vbeg = str; len > 0 && *str != '"' && *str != ';' && !ISSPACE(*str); --len, str++);
vend = str;
}
if (indicator) {
while (len > 0 && (*str == ';' || ISSPACE(*str))) --len, str++;
}
else {
while (len > 0 && (ISSPACE(*str))) --len, str++;
if (len) return FALSE;
}
n = end - beg;
str_copy(name, beg, n);
s = RSTRING_PTR(name);
for (i = 0; i < n; ++i) {
if (s[i] == '-') s[i] = '_';
}
do {
if (STRNCASECMP(p->name, s, n) == 0 && !p->name[n]) {
n = vend - vbeg;
if (p->length) {
n = (*p->length)(parser, vbeg, n);
}
str_copy(val, vbeg, n);
(*p->func)(parser, p->name, RSTRING_PTR(val));
break;
}
} while (++p < magic_comments + numberof(magic_comments));
#ifdef RIPPER
str_copy(val, vbeg, vend - vbeg);
dispatch2(magic_comment, name, val);
#endif
}
return TRUE;
}
static void
set_file_encoding(struct parser_params *parser, const char *str, const char *send)
{
int sep = 0;
const char *beg = str;
VALUE s;
for (;;) {
if (send - str <= 6) return;
switch (str[6]) {
case 'C': case 'c': str += 6; continue;
case 'O': case 'o': str += 5; continue;
case 'D': case 'd': str += 4; continue;
case 'I': case 'i': str += 3; continue;
case 'N': case 'n': str += 2; continue;
case 'G': case 'g': str += 1; continue;
case '=': case ':':
sep = 1;
str += 6;
break;
default:
str += 6;
if (ISSPACE(*str)) break;
continue;
}
if (STRNCASECMP(str-6, "coding", 6) == 0) break;
}
for (;;) {
do {
if (++str >= send) return;
} while (ISSPACE(*str));
if (sep) break;
if (*str != '=' && *str != ':') return;
sep = 1;
str++;
}
beg = str;
while ((*str == '-' || *str == '_' || ISALNUM(*str)) && ++str < send);
s = rb_str_new(beg, parser_encode_length(parser, beg, str - beg));
parser_set_encode(parser, RSTRING_PTR(s));
rb_str_resize(s, 0);
}
static void
parser_prepare(struct parser_params *parser)
{
int c = nextc();
switch (c) {
case '#':
if (peek('!')) parser->has_shebang = 1;
break;
case 0xef: /* UTF-8 BOM marker */
if (lex_pend - lex_p >= 2 &&
(unsigned char)lex_p[0] == 0xbb &&
(unsigned char)lex_p[1] == 0xbf) {
parser->enc = rb_utf8_encoding();
lex_p += 2;
lex_pbeg = lex_p;
return;
}
break;
case EOF:
return;
}
pushback(c);
parser->enc = rb_enc_get(lex_lastline);
parser->token_info_enabled = !compile_for_eval && RTEST(ruby_verbose);
}
#define IS_ARG() IS_lex_state(EXPR_ARG_ANY)
#define IS_END() IS_lex_state(EXPR_END_ANY)
#define IS_BEG() (IS_lex_state(EXPR_BEG_ANY) || IS_lex_state_all(EXPR_ARG|EXPR_LABELED))
#define IS_SPCARG(c) (IS_ARG() && space_seen && !ISSPACE(c))
#define IS_LABEL_POSSIBLE() (\
(IS_lex_state(EXPR_LABEL|EXPR_ENDFN) && !cmd_state) || \
IS_ARG())
#define IS_LABEL_SUFFIX(n) (peek_n(':',(n)) && !peek_n(':', (n)+1))
#define IS_AFTER_OPERATOR() IS_lex_state(EXPR_FNAME | EXPR_DOT)
#ifndef RIPPER
#define ambiguous_operator(tok, op, syn) ( \
rb_warning0("`"op"' after local variable or literal is interpreted as binary operator"), \
rb_warning0("even though it seems like "syn""))
#else
#define ambiguous_operator(tok, op, syn) \
dispatch2(operator_ambiguous, TOKEN2VAL(tok), rb_str_new_cstr(syn))
#endif
#define warn_balanced(tok, op, syn) ((void) \
(!IS_lex_state_for(last_state, EXPR_CLASS|EXPR_DOT|EXPR_FNAME|EXPR_ENDFN) && \
space_seen && !ISSPACE(c) && \
(ambiguous_operator(tok, op, syn), 0)), \
(tok))
static VALUE
parse_rational(struct parser_params *parser, char *str, int len, int seen_point)
{
VALUE v;
char *point = &str[seen_point];
size_t fraclen = len-seen_point-1;
memmove(point, point+1, fraclen+1);
v = rb_cstr_to_inum(str, 10, FALSE);
return rb_rational_new(v, rb_int_positive_pow(10, fraclen));
}
static int
parse_numeric(struct parser_params *parser, int c)
{
int is_float, seen_point, seen_e, nondigit;
int suffix;
is_float = seen_point = seen_e = nondigit = 0;
SET_LEX_STATE(EXPR_END);
newtok();
if (c == '-' || c == '+') {
tokadd(c);
c = nextc();
}
if (c == '0') {
#define no_digits() do {yyerror("numeric literal without digits"); return 0;} while (0)
int start = toklen();
c = nextc();
if (c == 'x' || c == 'X') {
/* hexadecimal */
c = nextc();
if (c != -1 && ISXDIGIT(c)) {
do {
if (c == '_') {
if (nondigit) break;
nondigit = c;
continue;
}
if (!ISXDIGIT(c)) break;
nondigit = 0;
tokadd(c);
} while ((c = nextc()) != -1);
}
pushback(c);
tokfix();
if (toklen() == start) {
no_digits();
}
else if (nondigit) goto trailing_uc;
suffix = number_literal_suffix(NUM_SUFFIX_ALL);
return set_integer_literal(rb_cstr_to_inum(tok(), 16, FALSE), suffix);
}
if (c == 'b' || c == 'B') {
/* binary */
c = nextc();
if (c == '0' || c == '1') {
do {
if (c == '_') {
if (nondigit) break;
nondigit = c;
continue;
}
if (c != '0' && c != '1') break;
nondigit = 0;
tokadd(c);
} while ((c = nextc()) != -1);
}
pushback(c);
tokfix();
if (toklen() == start) {
no_digits();
}
else if (nondigit) goto trailing_uc;
suffix = number_literal_suffix(NUM_SUFFIX_ALL);
return set_integer_literal(rb_cstr_to_inum(tok(), 2, FALSE), suffix);
}
if (c == 'd' || c == 'D') {
/* decimal */
c = nextc();
if (c != -1 && ISDIGIT(c)) {
do {
if (c == '_') {
if (nondigit) break;
nondigit = c;
continue;
}
if (!ISDIGIT(c)) break;
nondigit = 0;
tokadd(c);
} while ((c = nextc()) != -1);
}
pushback(c);
tokfix();
if (toklen() == start) {
no_digits();
}
else if (nondigit) goto trailing_uc;
suffix = number_literal_suffix(NUM_SUFFIX_ALL);
return set_integer_literal(rb_cstr_to_inum(tok(), 10, FALSE), suffix);
}
if (c == '_') {
/* 0_0 */
goto octal_number;
}
if (c == 'o' || c == 'O') {
/* prefixed octal */
c = nextc();
if (c == -1 || c == '_' || !ISDIGIT(c)) {
no_digits();
}
}
if (c >= '0' && c <= '7') {
/* octal */
octal_number:
do {
if (c == '_') {
if (nondigit) break;
nondigit = c;
continue;
}
if (c < '0' || c > '9') break;
if (c > '7') goto invalid_octal;
nondigit = 0;
tokadd(c);
} while ((c = nextc()) != -1);
if (toklen() > start) {
pushback(c);
tokfix();
if (nondigit) goto trailing_uc;
suffix = number_literal_suffix(NUM_SUFFIX_ALL);
return set_integer_literal(rb_cstr_to_inum(tok(), 8, FALSE), suffix);
}
if (nondigit) {
pushback(c);
goto trailing_uc;
}
}
if (c > '7' && c <= '9') {
invalid_octal:
yyerror("Invalid octal digit");
}
else if (c == '.' || c == 'e' || c == 'E') {
tokadd('0');
}
else {
pushback(c);
suffix = number_literal_suffix(NUM_SUFFIX_ALL);
return set_integer_literal(INT2FIX(0), suffix);
}
}
for (;;) {
switch (c) {
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
nondigit = 0;
tokadd(c);
break;
case '.':
if (nondigit) goto trailing_uc;
if (seen_point || seen_e) {
goto decode_num;
}
else {
int c0 = nextc();
if (c0 == -1 || !ISDIGIT(c0)) {
pushback(c0);
goto decode_num;
}
c = c0;
}
seen_point = toklen();
tokadd('.');
tokadd(c);
is_float++;
nondigit = 0;
break;
case 'e':
case 'E':
if (nondigit) {
pushback(c);
c = nondigit;
goto decode_num;
}
if (seen_e) {
goto decode_num;
}
nondigit = c;
c = nextc();
if (c != '-' && c != '+' && !ISDIGIT(c)) {
pushback(c);
nondigit = 0;
goto decode_num;
}
tokadd(nondigit);
seen_e++;
is_float++;
tokadd(c);
nondigit = (c == '-' || c == '+') ? c : 0;
break;
case '_': /* `_' in number just ignored */
if (nondigit) goto decode_num;
nondigit = c;
break;
default:
goto decode_num;
}
c = nextc();
}
decode_num:
pushback(c);
if (nondigit) {
char tmp[30];
trailing_uc:
snprintf(tmp, sizeof(tmp), "trailing `%c' in number", nondigit);
yyerror(tmp);
}
tokfix();
if (is_float) {
int type = tFLOAT;
VALUE v;
suffix = number_literal_suffix(seen_e ? NUM_SUFFIX_I : NUM_SUFFIX_ALL);
if (suffix & NUM_SUFFIX_R) {
type = tRATIONAL;
v = parse_rational(parser, tok(), toklen(), seen_point);
}
else {
double d = strtod(tok(), 0);
if (errno == ERANGE) {
rb_warning1("Float %s out of range", WARN_S(tok()));
errno = 0;
}
v = DBL2NUM(d);
}
return set_number_literal(v, type, suffix);
}
suffix = number_literal_suffix(NUM_SUFFIX_ALL);
return set_integer_literal(rb_cstr_to_inum(tok(), 10, FALSE), suffix);
}
static int
parse_qmark(struct parser_params *parser, int space_seen)
{
rb_encoding *enc;
register int c;
if (IS_END()) {
SET_LEX_STATE(EXPR_VALUE);
return '?';
}
c = nextc();
if (c == -1) {
compile_error(PARSER_ARG "incomplete character syntax");
return 0;
}
if (rb_enc_isspace(c, current_enc)) {
if (!IS_ARG()) {
int c2 = 0;
switch (c) {
case ' ':
c2 = 's';
break;
case '\n':
c2 = 'n';
break;
case '\t':
c2 = 't';
break;
case '\v':
c2 = 'v';
break;
case '\r':
c2 = 'r';
break;
case '\f':
c2 = 'f';
break;
}
if (c2) {
rb_warn1("invalid character syntax; use ?\\%c", WARN_I(c2));
}
}
ternary:
pushback(c);
SET_LEX_STATE(EXPR_VALUE);
return '?';
}
newtok();
enc = current_enc;
if (!parser_isascii()) {
if (tokadd_mbchar(c) == -1) return 0;
}
else if ((rb_enc_isalnum(c, current_enc) || c == '_') &&
lex_p < lex_pend && is_identchar(lex_p, lex_pend, current_enc)) {
if (space_seen) {
const char *start = lex_p - 1, *p = start;
do {
int n = rb_enc_precise_mbclen(p, lex_pend, current_enc);
p += n;
} while (p < lex_pend && is_identchar(p, lex_pend, current_enc));
rb_warn2("`?' just followed by `%.*s' is interpreted as" \
" a conditional operator, put a space after `?'",
WARN_I((int)(p - start)), WARN_S_L(start, (p - start)));
}
goto ternary;
}
else if (c == '\\') {
if (peek('u')) {
nextc();
if (!parser_tokadd_utf8(parser, &enc, 0, 0, 0))
return 0;
}
else if (!lex_eol_p() && !(c = *lex_p, ISASCII(c))) {
nextc();
if (tokadd_mbchar(c) == -1) return 0;
}
else {
c = read_escape(0, &enc);
tokadd(c);
}
}
else {
tokadd(c);
}
tokfix();
set_yylval_str(STR_NEW3(tok(), toklen(), enc, 0));
SET_LEX_STATE(EXPR_END);
return tCHAR;
}
static int
parse_percent(struct parser_params *parser, const int space_seen, const enum lex_state_e last_state)
{
register int c;
if (IS_BEG()) {
int term;
int paren;
c = nextc();
quotation:
if (c == -1 || !ISALNUM(c)) {
term = c;
c = 'Q';
}
else {
term = nextc();
if (rb_enc_isalnum(term, current_enc) || !parser_isascii()) {
yyerror("unknown type of %string");
return 0;
}
}
if (c == -1 || term == -1) {
compile_error(PARSER_ARG "unterminated quoted string meets end of file");
return 0;
}
paren = term;
if (term == '(') term = ')';
else if (term == '[') term = ']';
else if (term == '{') term = '}';
else if (term == '<') term = '>';
else paren = 0;
switch (c) {
case 'Q':
lex_strterm = NEW_STRTERM(str_dquote, term, paren);
return tSTRING_BEG;
case 'q':
lex_strterm = NEW_STRTERM(str_squote, term, paren);
return tSTRING_BEG;
case 'W':
lex_strterm = NEW_STRTERM(str_dword, term, paren);
do {c = nextc();} while (ISSPACE(c));
pushback(c);
return tWORDS_BEG;
case 'w':
lex_strterm = NEW_STRTERM(str_sword, term, paren);
do {c = nextc();} while (ISSPACE(c));
pushback(c);
return tQWORDS_BEG;
case 'I':
lex_strterm = NEW_STRTERM(str_dword, term, paren);
do {c = nextc();} while (ISSPACE(c));
pushback(c);
return tSYMBOLS_BEG;
case 'i':
lex_strterm = NEW_STRTERM(str_sword, term, paren);
do {c = nextc();} while (ISSPACE(c));
pushback(c);
return tQSYMBOLS_BEG;
case 'x':
lex_strterm = NEW_STRTERM(str_xquote, term, paren);
return tXSTRING_BEG;
case 'r':
lex_strterm = NEW_STRTERM(str_regexp, term, paren);
return tREGEXP_BEG;
case 's':
lex_strterm = NEW_STRTERM(str_ssym, term, paren);
SET_LEX_STATE(EXPR_FNAME|EXPR_FITEM);
return tSYMBEG;
default:
yyerror("unknown type of %string");
return 0;
}
}
if ((c = nextc()) == '=') {
set_yylval_id('%');
SET_LEX_STATE(EXPR_BEG);
return tOP_ASGN;
}
if (IS_SPCARG(c) || (IS_lex_state(EXPR_FITEM) && c == 's')) {
goto quotation;
}
SET_LEX_STATE(IS_AFTER_OPERATOR() ? EXPR_ARG : EXPR_BEG);
pushback(c);
return warn_balanced('%', "%%", "string literal");
}
static int
tokadd_ident(struct parser_params *parser, int c)
{
do {
if (tokadd_mbchar(c) == -1) return -1;
c = nextc();
} while (parser_is_identchar());
pushback(c);
return 0;
}
static ID
tokenize_ident(struct parser_params *parser, const enum lex_state_e last_state)
{
ID ident = TOK_INTERN();
set_yylval_name(ident);
return ident;
}
static int
parse_numvar(struct parser_params *parser)
{
size_t len;
int overflow;
unsigned long n = ruby_scan_digits(tok()+1, toklen()-1, 10, &len, &overflow);
const unsigned long nth_ref_max =
((FIXNUM_MAX < INT_MAX) ? FIXNUM_MAX : INT_MAX) >> 1;
/* NTH_REF is left-shifted to be ORed with back-ref flag and
* turned into a Fixnum, in compile.c */
if (overflow || n > nth_ref_max) {
/* compile_error()? */
rb_warn1("`%s' is too big for a number variable, always nil", WARN_S(tok()));
return 0; /* $0 is $PROGRAM_NAME, not NTH_REF */
}
else {
return (int)n;
}
}
static int
parse_gvar(struct parser_params *parser, const enum lex_state_e last_state)
{
register int c;
SET_LEX_STATE(EXPR_END);
newtok();
c = nextc();
switch (c) {
case '_': /* $_: last read line string */
c = nextc();
if (parser_is_identchar()) {
tokadd('$');
tokadd('_');
break;
}
pushback(c);
c = '_';
/* fall through */
case '~': /* $~: match-data */
case '*': /* $*: argv */
case '$': /* $$: pid */
case '?': /* $?: last status */
case '!': /* $!: error string */
case '@': /* $@: error position */
case '/': /* $/: input record separator */
case '\\': /* $\: output record separator */
case ';': /* $;: field separator */
case ',': /* $,: output field separator */
case '.': /* $.: last read line number */
case '=': /* $=: ignorecase */
case ':': /* $:: load path */
case '<': /* $<: reading filename */
case '>': /* $>: default output handle */
case '\"': /* $": already loaded files */
tokadd('$');
tokadd(c);
goto gvar;
case '-':
tokadd('$');
tokadd(c);
c = nextc();
if (parser_is_identchar()) {
if (tokadd_mbchar(c) == -1) return 0;
}
else {
pushback(c);
pushback('-');
return '$';
}
gvar:
set_yylval_name(TOK_INTERN());
return tGVAR;
case '&': /* $&: last match */
case '`': /* $`: string before last match */
case '\'': /* $': string after last match */
case '+': /* $+: string matches last paren. */
if (IS_lex_state_for(last_state, EXPR_FNAME)) {
tokadd('$');
tokadd(c);
goto gvar;
}
set_yylval_node(NEW_BACK_REF(c));
return tBACK_REF;
case '1': case '2': case '3':
case '4': case '5': case '6':
case '7': case '8': case '9':
tokadd('$');
do {
tokadd(c);
c = nextc();
} while (c != -1 && ISDIGIT(c));
pushback(c);
if (IS_lex_state_for(last_state, EXPR_FNAME)) goto gvar;
tokfix();
set_yylval_node(NEW_NTH_REF(parse_numvar(parser)));
return tNTH_REF;
default:
if (!parser_is_identchar()) {
if (c == -1 || ISSPACE(c)) {
compile_error(PARSER_ARG "`$' without identifiers is not allowed as a global variable name");
}
else {
pushback(c);
compile_error(PARSER_ARG "`$%c' is not allowed as a global variable name", c);
}
return 0;
}
case '0':
tokadd('$');
}
if (tokadd_ident(parser, c)) return 0;
SET_LEX_STATE(EXPR_END);
tokenize_ident(parser, last_state);
return tGVAR;
}
static int
parse_atmark(struct parser_params *parser, const enum lex_state_e last_state)
{
int result = tIVAR;
register int c = nextc();
newtok();
tokadd('@');
if (c == '@') {
result = tCVAR;
tokadd('@');
c = nextc();
}
if (c == -1 || ISSPACE(c)) {
if (result == tIVAR) {
compile_error(PARSER_ARG "`@' without identifiers is not allowed as an instance variable name");
}
else {
compile_error(PARSER_ARG "`@@' without identifiers is not allowed as a class variable name");
}
return 0;
}
else if (ISDIGIT(c) || !parser_is_identchar()) {
pushback(c);
if (result == tIVAR) {
compile_error(PARSER_ARG "`@%c' is not allowed as an instance variable name", c);
}
else {
compile_error(PARSER_ARG "`@@%c' is not allowed as a class variable name", c);
}
return 0;
}
if (tokadd_ident(parser, c)) return 0;
SET_LEX_STATE(EXPR_END);
tokenize_ident(parser, last_state);
return result;
}
static int
parse_ident(struct parser_params *parser, int c, int cmd_state)
{
int result = 0;
int mb = ENC_CODERANGE_7BIT;
const enum lex_state_e last_state = lex_state;
ID ident;
do {
if (!ISASCII(c)) mb = ENC_CODERANGE_UNKNOWN;
if (tokadd_mbchar(c) == -1) return 0;
c = nextc();
} while (parser_is_identchar());
if ((c == '!' || c == '?') && !peek('=')) {
tokadd(c);
}
else {
pushback(c);
}
tokfix();
if (toklast() == '!' || toklast() == '?') {
result = tFID;
}
else {
if (IS_lex_state(EXPR_FNAME)) {
register int c = nextc();
if (c == '=' && !peek('~') && !peek('>') &&
(!peek('=') || (peek_n('>', 1)))) {
result = tIDENTIFIER;
tokadd(c);
tokfix();
}
else {
pushback(c);
}
}
if (result == 0 && ISUPPER(tok()[0])) {
result = tCONSTANT;
}
else {
result = tIDENTIFIER;
}
}
if (IS_LABEL_POSSIBLE()) {
if (IS_LABEL_SUFFIX(0)) {
SET_LEX_STATE(EXPR_ARG|EXPR_LABELED);
nextc();
set_yylval_name(TOK_INTERN());
return tLABEL;
}
}
if (mb == ENC_CODERANGE_7BIT && !IS_lex_state(EXPR_DOT)) {
const struct kwtable *kw;
/* See if it is a reserved word. */
kw = rb_reserved_word(tok(), toklen());
if (kw) {
enum lex_state_e state = lex_state;
SET_LEX_STATE(kw->state);
if (IS_lex_state_for(state, EXPR_FNAME)) {
set_yylval_name(rb_intern2(tok(), toklen()));
return kw->id[0];
}
if (IS_lex_state(EXPR_BEG)) {
command_start = TRUE;
}
if (kw->id[0] == keyword_do) {
if (lambda_beginning_p()) {
lpar_beg = 0;
--paren_nest;
return keyword_do_LAMBDA;
}
if (COND_P()) return keyword_do_cond;
if (CMDARG_P() && !IS_lex_state_for(state, EXPR_CMDARG))
return keyword_do_block;
if (IS_lex_state_for(state, (EXPR_BEG | EXPR_ENDARG)))
return keyword_do_block;
return keyword_do;
}
if (IS_lex_state_for(state, (EXPR_BEG | EXPR_LABELED)))
return kw->id[0];
else {
if (kw->id[0] != kw->id[1])
SET_LEX_STATE(EXPR_BEG | EXPR_LABEL);
return kw->id[1];
}
}
}
if (IS_lex_state(EXPR_BEG_ANY | EXPR_ARG_ANY | EXPR_DOT)) {
if (cmd_state) {
SET_LEX_STATE(EXPR_CMDARG);
}
else {
SET_LEX_STATE(EXPR_ARG);
}
}
else if (lex_state == EXPR_FNAME) {
SET_LEX_STATE(EXPR_ENDFN);
}
else {
SET_LEX_STATE(EXPR_END);
}
ident = tokenize_ident(parser, last_state);
if (!IS_lex_state_for(last_state, EXPR_DOT|EXPR_FNAME) &&
(result == tIDENTIFIER) && /* not EXPR_FNAME, not attrasgn */
lvar_defined(ident)) {
SET_LEX_STATE(EXPR_END|EXPR_LABEL);
}
return result;
}
static int
parser_yylex(struct parser_params *parser)
{
register int c;
int space_seen = 0;
int cmd_state;
int label;
enum lex_state_e last_state;
int fallthru = FALSE;
int token_seen = parser->token_seen;
if (lex_strterm) {
int token;
if (nd_type(lex_strterm) == NODE_HEREDOC) {
token = here_document(lex_strterm);
if (token == tSTRING_END) {
lex_strterm = 0;
SET_LEX_STATE(EXPR_END);
}
}
else {
token = parse_string(lex_strterm);
if ((token == tSTRING_END) && (lex_strterm->nd_func & STR_FUNC_LABEL)) {
if (((IS_lex_state(EXPR_BEG | EXPR_ENDFN) && !COND_P()) || IS_ARG()) &&
IS_LABEL_SUFFIX(0)) {
nextc();
token = tLABEL_END;
}
}
if (token == tSTRING_END || token == tREGEXP_END || token == tLABEL_END) {
rb_gc_force_recycle((VALUE)lex_strterm);
lex_strterm = 0;
SET_LEX_STATE(token == tLABEL_END ? EXPR_BEG|EXPR_LABEL : EXPR_END);
}
}
return token;
}
cmd_state = command_start;
command_start = FALSE;
parser->token_seen = TRUE;
retry:
last_state = lex_state;
switch (c = nextc()) {
case '\0': /* NUL */
case '\004': /* ^D */
case '\032': /* ^Z */
case -1: /* end of script. */
return 0;
/* white spaces */
case ' ': case '\t': case '\f': case '\r':
case '\13': /* '\v' */
space_seen = 1;
#ifdef RIPPER
while ((c = nextc())) {
switch (c) {
case ' ': case '\t': case '\f': case '\r':
case '\13': /* '\v' */
break;
default:
goto outofloop;
}
}
outofloop:
pushback(c);
dispatch_scan_event(tSP);
#endif
goto retry;
case '#': /* it's a comment */
parser->token_seen = token_seen;
/* no magic_comment in shebang line */
if (!parser_magic_comment(parser, lex_p, lex_pend - lex_p)) {
if (comment_at_top(parser)) {
set_file_encoding(parser, lex_p, lex_pend);
}
}
lex_p = lex_pend;
dispatch_scan_event(tCOMMENT);
fallthru = TRUE;
/* fall through */
case '\n':
parser->token_seen = token_seen;
c = (IS_lex_state(EXPR_BEG|EXPR_CLASS|EXPR_FNAME|EXPR_DOT) &&
!IS_lex_state(EXPR_LABELED));
if (c || IS_lex_state_all(EXPR_ARG|EXPR_LABELED)) {
if (!fallthru) {
dispatch_scan_event(tIGNORED_NL);
}
fallthru = FALSE;
if (!c && parser->in_kwarg) {
goto normal_newline;
}
goto retry;
}
while ((c = nextc())) {
switch (c) {
case ' ': case '\t': case '\f': case '\r':
case '\13': /* '\v' */
space_seen = 1;
break;
case '&':
case '.': {
dispatch_delayed_token(tIGNORED_NL);
if (peek('.') == (c == '&')) {
pushback(c);
dispatch_scan_event(tSP);
goto retry;
}
}
default:
--ruby_sourceline;
lex_nextline = lex_lastline;
case -1: /* EOF no decrement*/
lex_goto_eol(parser);
#ifdef RIPPER
if (c != -1) {
parser->tokp = lex_p;
}
#endif
goto normal_newline;
}
}
normal_newline:
command_start = TRUE;
SET_LEX_STATE(EXPR_BEG);
return '\n';
case '*':
if ((c = nextc()) == '*') {
if ((c = nextc()) == '=') {
set_yylval_id(tPOW);
SET_LEX_STATE(EXPR_BEG);
return tOP_ASGN;
}
pushback(c);
if (IS_SPCARG(c)) {
rb_warning0("`**' interpreted as argument prefix");
c = tDSTAR;
}
else if (IS_BEG()) {
c = tDSTAR;
}
else {
c = warn_balanced((enum ruby_method_ids)tPOW, "**", "argument prefix");
}
}
else {
if (c == '=') {
set_yylval_id('*');
SET_LEX_STATE(EXPR_BEG);
return tOP_ASGN;
}
pushback(c);
if (IS_SPCARG(c)) {
rb_warning0("`*' interpreted as argument prefix");
c = tSTAR;
}
else if (IS_BEG()) {
c = tSTAR;
}
else {
c = warn_balanced('*', "*", "argument prefix");
}
}
SET_LEX_STATE(IS_AFTER_OPERATOR() ? EXPR_ARG : EXPR_BEG);
return c;
case '!':
c = nextc();
if (IS_AFTER_OPERATOR()) {
SET_LEX_STATE(EXPR_ARG);
if (c == '@') {
return '!';
}
}
else {
SET_LEX_STATE(EXPR_BEG);
}
if (c == '=') {
return tNEQ;
}
if (c == '~') {
return tNMATCH;
}
pushback(c);
return '!';
case '=':
if (was_bol()) {
/* skip embedded rd document */
if (strncmp(lex_p, "begin", 5) == 0 && ISSPACE(lex_p[5])) {
int first_p = TRUE;
lex_goto_eol(parser);
dispatch_scan_event(tEMBDOC_BEG);
for (;;) {
lex_goto_eol(parser);
if (!first_p) {
dispatch_scan_event(tEMBDOC);
}
first_p = FALSE;
c = nextc();
if (c == -1) {
compile_error(PARSER_ARG "embedded document meets end of file");
return 0;
}
if (c != '=') continue;
if (c == '=' && strncmp(lex_p, "end", 3) == 0 &&
(lex_p + 3 == lex_pend || ISSPACE(lex_p[3]))) {
break;
}
}
lex_goto_eol(parser);
dispatch_scan_event(tEMBDOC_END);
goto retry;
}
}
SET_LEX_STATE(IS_AFTER_OPERATOR() ? EXPR_ARG : EXPR_BEG);
if ((c = nextc()) == '=') {
if ((c = nextc()) == '=') {
return tEQQ;
}
pushback(c);
return tEQ;
}
if (c == '~') {
return tMATCH;
}
else if (c == '>') {
return tASSOC;
}
pushback(c);
return '=';
case '<':
last_state = lex_state;
c = nextc();
if (c == '<' &&
!IS_lex_state(EXPR_DOT | EXPR_CLASS) &&
!IS_END() &&
(!IS_ARG() || IS_lex_state(EXPR_LABELED) || space_seen)) {
int token = heredoc_identifier();
if (token) return token;
}
if (IS_AFTER_OPERATOR()) {
SET_LEX_STATE(EXPR_ARG);
}
else {
if (IS_lex_state(EXPR_CLASS))
command_start = TRUE;
SET_LEX_STATE(EXPR_BEG);
}
if (c == '=') {
if ((c = nextc()) == '>') {
return tCMP;
}
pushback(c);
return tLEQ;
}
if (c == '<') {
if ((c = nextc()) == '=') {
set_yylval_id(tLSHFT);
SET_LEX_STATE(EXPR_BEG);
return tOP_ASGN;
}
pushback(c);
return warn_balanced((enum ruby_method_ids)tLSHFT, "<<", "here document");
}
pushback(c);
return '<';
case '>':
SET_LEX_STATE(IS_AFTER_OPERATOR() ? EXPR_ARG : EXPR_BEG);
if ((c = nextc()) == '=') {
return tGEQ;
}
if (c == '>') {
if ((c = nextc()) == '=') {
set_yylval_id(tRSHFT);
SET_LEX_STATE(EXPR_BEG);
return tOP_ASGN;
}
pushback(c);
return tRSHFT;
}
pushback(c);
return '>';
case '"':
label = (IS_LABEL_POSSIBLE() ? str_label : 0);
lex_strterm = NEW_STRTERM(str_dquote | label, '"', 0);
return tSTRING_BEG;
case '`':
if (IS_lex_state(EXPR_FNAME)) {
SET_LEX_STATE(EXPR_ENDFN);
return c;
}
if (IS_lex_state(EXPR_DOT)) {
if (cmd_state)
SET_LEX_STATE(EXPR_CMDARG);
else
SET_LEX_STATE(EXPR_ARG);
return c;
}
lex_strterm = NEW_STRTERM(str_xquote, '`', 0);
return tXSTRING_BEG;
case '\'':
label = (IS_LABEL_POSSIBLE() ? str_label : 0);
lex_strterm = NEW_STRTERM(str_squote | label, '\'', 0);
return tSTRING_BEG;
case '?':
return parse_qmark(parser, space_seen);
case '&':
if ((c = nextc()) == '&') {
SET_LEX_STATE(EXPR_BEG);
if ((c = nextc()) == '=') {
set_yylval_id(tANDOP);
SET_LEX_STATE(EXPR_BEG);
return tOP_ASGN;
}
pushback(c);
return tANDOP;
}
else if (c == '=') {
set_yylval_id('&');
SET_LEX_STATE(EXPR_BEG);
return tOP_ASGN;
}
else if (c == '.') {
SET_LEX_STATE(EXPR_DOT);
return tANDDOT;
}
pushback(c);
if (IS_SPCARG(c)) {
rb_warning0("`&' interpreted as argument prefix");
c = tAMPER;
}
else if (IS_BEG()) {
c = tAMPER;
}
else {
c = warn_balanced('&', "&", "argument prefix");
}
SET_LEX_STATE(IS_AFTER_OPERATOR() ? EXPR_ARG : EXPR_BEG);
return c;
case '|':
if ((c = nextc()) == '|') {
SET_LEX_STATE(EXPR_BEG);
if ((c = nextc()) == '=') {
set_yylval_id(tOROP);
SET_LEX_STATE(EXPR_BEG);
return tOP_ASGN;
}
pushback(c);
return tOROP;
}
if (c == '=') {
set_yylval_id('|');
SET_LEX_STATE(EXPR_BEG);
return tOP_ASGN;
}
SET_LEX_STATE(IS_AFTER_OPERATOR() ? EXPR_ARG : EXPR_BEG|EXPR_LABEL);
pushback(c);
return '|';
case '+':
c = nextc();
if (IS_AFTER_OPERATOR()) {
SET_LEX_STATE(EXPR_ARG);
if (c == '@') {
return tUPLUS;
}
pushback(c);
return '+';
}
if (c == '=') {
set_yylval_id('+');
SET_LEX_STATE(EXPR_BEG);
return tOP_ASGN;
}
if (IS_BEG() || (IS_SPCARG(c) && arg_ambiguous('+'))) {
SET_LEX_STATE(EXPR_BEG);
pushback(c);
if (c != -1 && ISDIGIT(c)) {
return parse_numeric(parser, '+');
}
return tUPLUS;
}
SET_LEX_STATE(EXPR_BEG);
pushback(c);
return warn_balanced('+', "+", "unary operator");
case '-':
c = nextc();
if (IS_AFTER_OPERATOR()) {
SET_LEX_STATE(EXPR_ARG);
if (c == '@') {
return tUMINUS;
}
pushback(c);
return '-';
}
if (c == '=') {
set_yylval_id('-');
SET_LEX_STATE(EXPR_BEG);
return tOP_ASGN;
}
if (c == '>') {
SET_LEX_STATE(EXPR_ENDFN);
token_info_push("->");
return tLAMBDA;
}
if (IS_BEG() || (IS_SPCARG(c) && arg_ambiguous('-'))) {
SET_LEX_STATE(EXPR_BEG);
pushback(c);
if (c != -1 && ISDIGIT(c)) {
return tUMINUS_NUM;
}
return tUMINUS;
}
SET_LEX_STATE(EXPR_BEG);
pushback(c);
return warn_balanced('-', "-", "unary operator");
case '.':
SET_LEX_STATE(EXPR_BEG);
if ((c = nextc()) == '.') {
if ((c = nextc()) == '.') {
return tDOT3;
}
pushback(c);
return tDOT2;
}
pushback(c);
if (c != -1 && ISDIGIT(c)) {
yyerror("no .<digit> floating literal anymore; put 0 before dot");
}
SET_LEX_STATE(EXPR_DOT);
return '.';
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
return parse_numeric(parser, c);
case ')':
case ']':
paren_nest--;
case '}':
COND_LEXPOP();
CMDARG_LEXPOP();
if (c == ')')
SET_LEX_STATE(EXPR_ENDFN);
else
SET_LEX_STATE(EXPR_ENDARG);
if (c == '}') {
if (!brace_nest--) c = tSTRING_DEND;
}
return c;
case ':':
c = nextc();
if (c == ':') {
if (IS_BEG() || IS_lex_state(EXPR_CLASS) || IS_SPCARG(-1)) {
SET_LEX_STATE(EXPR_BEG);
return tCOLON3;
}
SET_LEX_STATE(EXPR_DOT);
return tCOLON2;
}
if (IS_END() || ISSPACE(c) || c == '#') {
pushback(c);
c = warn_balanced(':', ":", "symbol literal");
SET_LEX_STATE(EXPR_BEG);
return c;
}
switch (c) {
case '\'':
lex_strterm = NEW_STRTERM(str_ssym, c, 0);
break;
case '"':
lex_strterm = NEW_STRTERM(str_dsym, c, 0);
break;
default:
pushback(c);
break;
}
SET_LEX_STATE(EXPR_FNAME);
return tSYMBEG;
case '/':
if (IS_BEG()) {
lex_strterm = NEW_STRTERM(str_regexp, '/', 0);
return tREGEXP_BEG;
}
if ((c = nextc()) == '=') {
set_yylval_id('/');
SET_LEX_STATE(EXPR_BEG);
return tOP_ASGN;
}
pushback(c);
if (IS_SPCARG(c)) {
(void)arg_ambiguous('/');
lex_strterm = NEW_STRTERM(str_regexp, '/', 0);
return tREGEXP_BEG;
}
SET_LEX_STATE(IS_AFTER_OPERATOR() ? EXPR_ARG : EXPR_BEG);
return warn_balanced('/', "/", "regexp literal");
case '^':
if ((c = nextc()) == '=') {
set_yylval_id('^');
SET_LEX_STATE(EXPR_BEG);
return tOP_ASGN;
}
SET_LEX_STATE(IS_AFTER_OPERATOR() ? EXPR_ARG : EXPR_BEG);
pushback(c);
return '^';
case ';':
SET_LEX_STATE(EXPR_BEG);
command_start = TRUE;
return ';';
case ',':
SET_LEX_STATE(EXPR_BEG|EXPR_LABEL);
return ',';
case '~':
if (IS_AFTER_OPERATOR()) {
if ((c = nextc()) != '@') {
pushback(c);
}
SET_LEX_STATE(EXPR_ARG);
}
else {
SET_LEX_STATE(EXPR_BEG);
}
return '~';
case '(':
if (IS_BEG()) {
c = tLPAREN;
}
else if (IS_SPCARG(-1)) {
c = tLPAREN_ARG;
}
else if (IS_lex_state(EXPR_ENDFN) && space_seen && !lambda_beginning_p()) {
rb_warning0("parentheses after method name is interpreted as "
"an argument list, not a decomposed argument");
}
else if (lex_state == (EXPR_END|EXPR_LABEL) && space_seen) {
rb_warning0("don't put space before argument parentheses");
}
paren_nest++;
COND_PUSH(0);
CMDARG_PUSH(0);
SET_LEX_STATE(EXPR_BEG|EXPR_LABEL);
return c;
case '[':
paren_nest++;
if (IS_AFTER_OPERATOR()) {
SET_LEX_STATE(EXPR_ARG);
if ((c = nextc()) == ']') {
if ((c = nextc()) == '=') {
return tASET;
}
pushback(c);
return tAREF;
}
pushback(c);
lex_state |= EXPR_LABEL;
return '[';
}
else if (IS_BEG()) {
c = tLBRACK;
}
else if (IS_ARG() && (space_seen || IS_lex_state(EXPR_LABELED))) {
c = tLBRACK;
}
SET_LEX_STATE(EXPR_BEG|EXPR_LABEL);
COND_PUSH(0);
CMDARG_PUSH(0);
return c;
case '{':
++brace_nest;
if (lambda_beginning_p()) {
SET_LEX_STATE(EXPR_BEG);
lpar_beg = 0;
--paren_nest;
COND_PUSH(0);
CMDARG_PUSH(0);
return tLAMBEG;
}
if (IS_lex_state(EXPR_LABELED))
c = tLBRACE; /* hash */
else if (IS_lex_state(EXPR_ARG_ANY | EXPR_END | EXPR_ENDFN))
c = '{'; /* block (primary) */
else if (IS_lex_state(EXPR_ENDARG))
c = tLBRACE_ARG; /* block (expr) */
else
c = tLBRACE; /* hash */
COND_PUSH(0);
CMDARG_PUSH(0);
SET_LEX_STATE(EXPR_BEG);
if (c != tLBRACE_ARG) lex_state |= EXPR_LABEL;
if (c != tLBRACE) command_start = TRUE;
return c;
case '\\':
c = nextc();
if (c == '\n') {
space_seen = 1;
dispatch_scan_event(tSP);
goto retry; /* skip \\n */
}
pushback(c);
return '\\';
case '%':
return parse_percent(parser, space_seen, last_state);
case '$':
return parse_gvar(parser, last_state);
case '@':
return parse_atmark(parser, last_state);
case '_':
if (was_bol() && whole_match_p("__END__", 7, 0)) {
ruby__end__seen = 1;
parser->eofp = 1;
#ifndef RIPPER
return -1;
#else
lex_goto_eol(parser);
dispatch_scan_event(k__END__);
return 0;
#endif
}
newtok();
break;
default:
if (!parser_is_identchar()) {
compile_error(PARSER_ARG "Invalid char `\\x%02X' in expression", c);
goto retry;
}
newtok();
break;
}
return parse_ident(parser, c, cmd_state);
}
static int
yylex(YYSTYPE *lval, struct parser_params *parser)
{
int t;
parser->lval = lval;
lval->val = Qundef;
t = parser_yylex(parser);
if (has_delayed_token())
dispatch_delayed_token(t);
else if (t != 0)
dispatch_scan_event(t);
return t;
}
#ifndef RIPPER
static NODE*
node_newnode(struct parser_params *parser, enum node_type type, VALUE a0, VALUE a1, VALUE a2)
{
NODE *n = (rb_node_newnode)(type, a0, a1, a2);
nd_set_line(n, ruby_sourceline);
return n;
}
static enum node_type
nodetype(NODE *node) /* for debug */
{
return (enum node_type)nd_type(node);
}
static int
nodeline(NODE *node)
{
return nd_line(node);
}
static NODE*
newline_node(NODE *node)
{
if (node) {
node = remove_begin(node);
node->flags |= NODE_FL_NEWLINE;
}
return node;
}
static void
fixpos(NODE *node, NODE *orig)
{
if (!node) return;
if (!orig) return;
if (orig == (NODE*)1) return;
nd_set_line(node, nd_line(orig));
}
static void
parser_warning(struct parser_params *parser, NODE *node, const char *mesg)
{
rb_compile_warning(ruby_sourcefile, nd_line(node), "%s", mesg);
}
#define parser_warning(node, mesg) parser_warning(parser, (node), (mesg))
static void
parser_warn(struct parser_params *parser, NODE *node, const char *mesg)
{
rb_compile_warn(ruby_sourcefile, nd_line(node), "%s", mesg);
}
#define parser_warn(node, mesg) parser_warn(parser, (node), (mesg))
static NODE*
block_append_gen(struct parser_params *parser, NODE *head, NODE *tail)
{
NODE *end, *h = head, *nd;
if (tail == 0) return head;
if (h == 0) return tail;
switch (nd_type(h)) {
case NODE_LIT:
case NODE_STR:
case NODE_SELF:
case NODE_TRUE:
case NODE_FALSE:
case NODE_NIL:
parser_warning(h, "unused literal ignored");
return tail;
default:
h = end = NEW_BLOCK(head);
end->nd_end = end;
fixpos(end, head);
head = end;
break;
case NODE_BLOCK:
end = h->nd_end;
break;
}
nd = end->nd_head;
switch (nd_type(nd)) {
case NODE_RETURN:
case NODE_BREAK:
case NODE_NEXT:
case NODE_REDO:
case NODE_RETRY:
if (RTEST(ruby_verbose)) {
parser_warning(tail, "statement not reached");
}
break;
default:
break;
}
if (nd_type(tail) != NODE_BLOCK) {
tail = NEW_BLOCK(tail);
tail->nd_end = tail;
}
end->nd_next = tail;
h->nd_end = tail->nd_end;
return head;
}
/* append item to the list */
static NODE*
list_append_gen(struct parser_params *parser, NODE *list, NODE *item)
{
NODE *last;
if (list == 0) return NEW_LIST(item);
if (list->nd_next) {
last = list->nd_next->nd_end;
}
else {
last = list;
}
list->nd_alen += 1;
last->nd_next = NEW_LIST(item);
list->nd_next->nd_end = last->nd_next;
return list;
}
/* concat two lists */
static NODE*
list_concat(NODE *head, NODE *tail)
{
NODE *last;
if (head->nd_next) {
last = head->nd_next->nd_end;
}
else {
last = head;
}
head->nd_alen += tail->nd_alen;
last->nd_next = tail;
if (tail->nd_next) {
head->nd_next->nd_end = tail->nd_next->nd_end;
}
else {
head->nd_next->nd_end = tail;
}
return head;
}
static int
literal_concat0(struct parser_params *parser, VALUE head, VALUE tail)
{
if (NIL_P(tail)) return 1;
if (!rb_enc_compatible(head, tail)) {
compile_error(PARSER_ARG "string literal encodings differ (%s / %s)",
rb_enc_name(rb_enc_get(head)),
rb_enc_name(rb_enc_get(tail)));
rb_str_resize(head, 0);
rb_str_resize(tail, 0);
return 0;
}
rb_str_buf_append(head, tail);
return 1;
}
/* concat two string literals */
static NODE *
literal_concat_gen(struct parser_params *parser, NODE *head, NODE *tail)
{
enum node_type htype;
NODE *headlast;
VALUE lit;
if (!head) return tail;
if (!tail) return head;
htype = nd_type(head);
if (htype == NODE_EVSTR) {
NODE *node = NEW_DSTR(STR_NEW0());
head = list_append(node, head);
htype = NODE_DSTR;
}
if (heredoc_indent > 0) {
switch (htype) {
case NODE_STR:
nd_set_type(head, NODE_DSTR);
case NODE_DSTR:
return list_append(head, tail);
default:
break;
}
}
switch (nd_type(tail)) {
case NODE_STR:
if (htype == NODE_DSTR && (headlast = head->nd_next->nd_end->nd_head) &&
nd_type(headlast) == NODE_STR) {
htype = NODE_STR;
lit = headlast->nd_lit;
}
else {
lit = head->nd_lit;
}
if (htype == NODE_STR) {
if (!literal_concat0(parser, lit, tail->nd_lit)) {
error:
rb_gc_force_recycle((VALUE)head);
rb_gc_force_recycle((VALUE)tail);
return 0;
}
rb_gc_force_recycle((VALUE)tail);
}
else {
list_append(head, tail);
}
break;
case NODE_DSTR:
if (htype == NODE_STR) {
if (!literal_concat0(parser, head->nd_lit, tail->nd_lit))
goto error;
tail->nd_lit = head->nd_lit;
rb_gc_force_recycle((VALUE)head);
head = tail;
}
else if (NIL_P(tail->nd_lit)) {
append:
head->nd_alen += tail->nd_alen - 1;
head->nd_next->nd_end->nd_next = tail->nd_next;
head->nd_next->nd_end = tail->nd_next->nd_end;
rb_gc_force_recycle((VALUE)tail);
}
else if (htype == NODE_DSTR && (headlast = head->nd_next->nd_end->nd_head) &&
nd_type(headlast) == NODE_STR) {
lit = headlast->nd_lit;
if (!literal_concat0(parser, lit, tail->nd_lit))
goto error;
tail->nd_lit = Qnil;
goto append;
}
else {
nd_set_type(tail, NODE_ARRAY);
tail->nd_head = NEW_STR(tail->nd_lit);
list_concat(head, tail);
}
break;
case NODE_EVSTR:
if (htype == NODE_STR) {
nd_set_type(head, NODE_DSTR);
head->nd_alen = 1;
}
list_append(head, tail);
break;
}
return head;
}
static NODE *
evstr2dstr_gen(struct parser_params *parser, NODE *node)
{
if (nd_type(node) == NODE_EVSTR) {
node = list_append(NEW_DSTR(STR_NEW0()), node);
}
return node;
}
static NODE *
new_evstr_gen(struct parser_params *parser, NODE *node)
{
NODE *head = node;
if (node) {
switch (nd_type(node)) {
case NODE_STR: case NODE_DSTR: case NODE_EVSTR:
return node;
}
}
return NEW_EVSTR(head);
}
static NODE *
call_bin_op_gen(struct parser_params *parser, NODE *recv, ID id, NODE *arg1)
{
value_expr(recv);
value_expr(arg1);
return NEW_CALL(recv, id, NEW_LIST(arg1));
}
static NODE *
call_uni_op_gen(struct parser_params *parser, NODE *recv, ID id)
{
value_expr(recv);
return NEW_CALL(recv, id, 0);
}
static NODE*
match_op_gen(struct parser_params *parser, NODE *node1, NODE *node2)
{
value_expr(node1);
value_expr(node2);
if (node1) {
switch (nd_type(node1)) {
case NODE_DREGX:
case NODE_DREGX_ONCE:
return NEW_MATCH2(node1, node2);
case NODE_LIT:
if (RB_TYPE_P(node1->nd_lit, T_REGEXP)) {
const VALUE lit = node1->nd_lit;
NODE *match = NEW_MATCH2(node1, node2);
match->nd_args = reg_named_capture_assign(lit);
return match;
}
}
}
if (node2) {
switch (nd_type(node2)) {
case NODE_DREGX:
case NODE_DREGX_ONCE:
return NEW_MATCH3(node2, node1);
case NODE_LIT:
if (RB_TYPE_P(node2->nd_lit, T_REGEXP)) {
return NEW_MATCH3(node2, node1);
}
}
}
return NEW_CALL(node1, tMATCH, NEW_LIST(node2));
}
# if WARN_PAST_SCOPE
static int
past_dvar_p(struct parser_params *parser, ID id)
{
struct vtable *past = lvtbl->past;
while (past) {
if (vtable_included(past, id)) return 1;
past = past->prev;
}
return 0;
}
# endif
static NODE*
gettable_gen(struct parser_params *parser, ID id)
{
switch (id) {
case keyword_self:
return NEW_SELF();
case keyword_nil:
return NEW_NIL();
case keyword_true:
return NEW_TRUE();
case keyword_false:
return NEW_FALSE();
case keyword__FILE__:
return NEW_STR(rb_str_dup(ruby_sourcefile_string));
case keyword__LINE__:
return NEW_LIT(INT2FIX(tokline));
case keyword__ENCODING__:
return NEW_LIT(rb_enc_from_encoding(current_enc));
}
switch (id_type(id)) {
case ID_LOCAL:
if (dyna_in_block() && dvar_defined(id)) {
if (id == current_arg) {
rb_warn1("circular argument reference - %"PRIsWARN, rb_id2str(id));
}
return NEW_DVAR(id);
}
if (local_id(id)) {
if (id == current_arg) {
rb_warn1("circular argument reference - %"PRIsWARN, rb_id2str(id));
}
return NEW_LVAR(id);
}
# if WARN_PAST_SCOPE
if (!in_defined && RTEST(ruby_verbose) && past_dvar_p(parser, id)) {
rb_warning1("possible reference to past scope - %"PRIsWARN, rb_id2str(id));
}
# endif
/* method call without arguments */
return NEW_VCALL(id);
case ID_GLOBAL:
return NEW_GVAR(id);
case ID_INSTANCE:
return NEW_IVAR(id);
case ID_CONST:
return NEW_CONST(id);
case ID_CLASS:
return NEW_CVAR(id);
}
compile_error(PARSER_ARG "identifier %"PRIsVALUE" is not valid to get", rb_id2str(id));
return 0;
}
static NODE *
kwd_append(NODE *kwlist, NODE *kw)
{
if (kwlist) {
NODE *kws = kwlist;
while (kws->nd_next) {
kws = kws->nd_next;
}
kws->nd_next = kw;
}
return kwlist;
}
static NODE *
new_regexp_gen(struct parser_params *parser, NODE *node, int options)
{
NODE *list, *prev;
if (!node) {
return NEW_LIT(reg_compile(STR_NEW0(), options));
}
switch (nd_type(node)) {
case NODE_STR:
{
VALUE src = node->nd_lit;
nd_set_type(node, NODE_LIT);
node->nd_lit = reg_compile(src, options);
}
break;
default:
node = NEW_NODE(NODE_DSTR, STR_NEW0(), 1, NEW_LIST(node));
case NODE_DSTR:
if (options & RE_OPTION_ONCE) {
nd_set_type(node, NODE_DREGX_ONCE);
}
else {
nd_set_type(node, NODE_DREGX);
}
node->nd_cflag = options & RE_OPTION_MASK;
if (!NIL_P(node->nd_lit)) reg_fragment_check(node->nd_lit, options);
for (list = (prev = node)->nd_next; list; list = list->nd_next) {
if (nd_type(list->nd_head) == NODE_STR) {
VALUE tail = list->nd_head->nd_lit;
if (reg_fragment_check(tail, options) && prev && !NIL_P(prev->nd_lit)) {
VALUE lit = prev == node ? prev->nd_lit : prev->nd_head->nd_lit;
if (!literal_concat0(parser, lit, tail)) {
node = 0;
break;
}
rb_str_resize(tail, 0);
prev->nd_next = list->nd_next;
rb_gc_force_recycle((VALUE)list->nd_head);
rb_gc_force_recycle((VALUE)list);
list = prev;
}
else {
prev = list;
}
}
else {
prev = 0;
}
}
if (!node->nd_next) {
VALUE src = node->nd_lit;
nd_set_type(node, NODE_LIT);
node->nd_lit = reg_compile(src, options);
}
break;
}
return node;
}
static NODE *
new_xstring_gen(struct parser_params *parser, NODE *node)
{
if (!node) {
return NEW_XSTR(STR_NEW0());
}
switch (nd_type(node)) {
case NODE_STR:
nd_set_type(node, NODE_XSTR);
break;
case NODE_DSTR:
nd_set_type(node, NODE_DXSTR);
break;
default:
node = NEW_NODE(NODE_DXSTR, Qnil, 1, NEW_LIST(node));
break;
}
return node;
}
#else /* !RIPPER */
static int
id_is_var_gen(struct parser_params *parser, ID id)
{
if (is_notop_id(id)) {
switch (id & ID_SCOPE_MASK) {
case ID_GLOBAL: case ID_INSTANCE: case ID_CONST: case ID_CLASS:
return 1;
case ID_LOCAL:
if (dyna_in_block() && dvar_defined(id)) return 1;
if (local_id(id)) return 1;
/* method call without arguments */
return 0;
}
}
compile_error(PARSER_ARG "identifier %s is not valid to get", rb_id2str(id));
return 0;
}
static VALUE
new_regexp_gen(struct parser_params *parser, VALUE re, VALUE opt)
{
VALUE src = 0, err;
int options = 0;
if (ripper_is_node_yylval(re)) {
src = RNODE(re)->nd_cval;
re = RNODE(re)->nd_rval;
}
if (ripper_is_node_yylval(opt)) {
options = (int)RNODE(opt)->nd_tag;
opt = RNODE(opt)->nd_rval;
}
if (src && NIL_P(parser_reg_compile(parser, src, options, &err))) {
compile_error(PARSER_ARG "%"PRIsVALUE, err);
}
return dispatch2(regexp_literal, re, opt);
}
static VALUE
new_xstring_gen(struct parser_params *parser, VALUE str)
{
return dispatch1(xstring_literal, str);
}
#endif /* !RIPPER */
static const char lex_state_names[][13] = {
"EXPR_BEG", "EXPR_END", "EXPR_ENDARG", "EXPR_ENDFN", "EXPR_ARG",
"EXPR_CMDARG", "EXPR_MID", "EXPR_FNAME", "EXPR_DOT", "EXPR_CLASS",
"EXPR_LABEL", "EXPR_LABELED","EXPR_FITEM",
};
static VALUE
append_lex_state_name(enum lex_state_e state, VALUE buf)
{
int i, sep = 0;
unsigned int mask = 1;
static const char none[] = "EXPR_NONE";
for (i = 0; i < EXPR_MAX_STATE; ++i, mask <<= 1) {
if ((unsigned)state & mask) {
if (sep) {
rb_str_cat(buf, "|", 1);
}
sep = 1;
rb_str_cat_cstr(buf, lex_state_names[i]);
}
}
if (!sep) {
rb_str_cat(buf, none, sizeof(none)-1);
}
return buf;
}
static enum lex_state_e
trace_lex_state(enum lex_state_e from, enum lex_state_e to, int line)
{
VALUE mesg;
mesg = rb_str_new_cstr("lex_state: ");
append_lex_state_name(from, mesg);
rb_str_cat_cstr(mesg, " -> ");
append_lex_state_name(to, mesg);
rb_str_catf(mesg, " at line %d\n", line);
rb_io_write(rb_stdout, mesg);
return to;
}
static void
show_bitstack(stack_type stack, const char *name, int line)
{
VALUE mesg = rb_sprintf("%s: ", name);
if (stack == 0) {
rb_str_cat_cstr(mesg, "0");
}
else {
stack_type mask = (stack_type)1U << (CHAR_BIT * sizeof(stack_type) - 1);
for (; mask && !(stack & mask); mask >>= 1) continue;
for (; mask; mask >>= 1) rb_str_cat(mesg, stack & mask ? "1" : "0", 1);
}
rb_str_catf(mesg, " at line %d\n", line);
rb_io_write(rb_stdout, mesg);
}
#ifdef RIPPER
static VALUE
assignable_gen(struct parser_params *parser, VALUE lhs)
#else
static NODE*
assignable_gen(struct parser_params *parser, ID id, NODE *val)
#endif
{
#ifdef RIPPER
ID id = get_id(lhs);
# define assignable_result(x) get_value(lhs)
# define parser_yyerror(parser, x) assign_error_gen(parser, lhs)
#else
# define assignable_result(x) (x)
#endif
if (!id) return assignable_result(0);
switch (id) {
case keyword_self:
yyerror("Can't change the value of self");
goto error;
case keyword_nil:
yyerror("Can't assign to nil");
goto error;
case keyword_true:
yyerror("Can't assign to true");
goto error;
case keyword_false:
yyerror("Can't assign to false");
goto error;
case keyword__FILE__:
yyerror("Can't assign to __FILE__");
goto error;
case keyword__LINE__:
yyerror("Can't assign to __LINE__");
goto error;
case keyword__ENCODING__:
yyerror("Can't assign to __ENCODING__");
goto error;
}
switch (id_type(id)) {
case ID_LOCAL:
if (dyna_in_block()) {
if (dvar_curr(id)) {
return assignable_result(NEW_DASGN_CURR(id, val));
}
else if (dvar_defined(id)) {
return assignable_result(NEW_DASGN(id, val));
}
else if (local_id(id)) {
return assignable_result(NEW_LASGN(id, val));
}
else {
dyna_var(id);
return assignable_result(NEW_DASGN_CURR(id, val));
}
}
else {
if (!local_id(id)) {
local_var(id);
}
return assignable_result(NEW_LASGN(id, val));
}
break;
case ID_GLOBAL:
return assignable_result(NEW_GASGN(id, val));
case ID_INSTANCE:
return assignable_result(NEW_IASGN(id, val));
case ID_CONST:
if (!in_def && !in_single)
return assignable_result(NEW_CDECL(id, val, 0));
yyerror("dynamic constant assignment");
break;
case ID_CLASS:
return assignable_result(NEW_CVASGN(id, val));
default:
compile_error(PARSER_ARG "identifier %"PRIsVALUE" is not valid to set", rb_id2str(id));
}
error:
return assignable_result(0);
#undef assignable_result
#undef parser_yyerror
}
static int
is_private_local_id(ID name)
{
VALUE s;
if (name == idUScore) return 1;
if (!is_local_id(name)) return 0;
s = rb_id2str(name);
if (!s) return 0;
return RSTRING_PTR(s)[0] == '_';
}
#define LVAR_USED ((ID)1 << (sizeof(ID) * CHAR_BIT - 1))
static int
shadowing_lvar_0(struct parser_params *parser, ID name)
{
if (is_private_local_id(name)) return 1;
if (dyna_in_block()) {
if (dvar_curr(name)) {
yyerror("duplicated argument name");
}
else if (dvar_defined_get(name) || local_id(name)) {
rb_warning1("shadowing outer local variable - %"PRIsWARN, rb_id2str(name));
vtable_add(lvtbl->vars, name);
if (lvtbl->used) {
vtable_add(lvtbl->used, (ID)ruby_sourceline | LVAR_USED);
}
return 0;
}
}
else {
if (local_id(name)) {
yyerror("duplicated argument name");
}
}
return 1;
}
static ID
shadowing_lvar_gen(struct parser_params *parser, ID name)
{
shadowing_lvar_0(parser, name);
return name;
}
static void
new_bv_gen(struct parser_params *parser, ID name)
{
if (!name) return;
if (!is_local_id(name)) {
compile_error(PARSER_ARG "invalid local variable - %"PRIsVALUE,
rb_id2str(name));
return;
}
if (!shadowing_lvar_0(parser, name)) return;
dyna_var(name);
}
#ifndef RIPPER
static NODE *
aryset_gen(struct parser_params *parser, NODE *recv, NODE *idx)
{
return NEW_ATTRASGN(recv, tASET, idx);
}
static void
block_dup_check_gen(struct parser_params *parser, NODE *node1, NODE *node2)
{
if (node2 && node1 && nd_type(node1) == NODE_BLOCK_PASS) {
compile_error(PARSER_ARG "both block arg and actual block given");
}
}
static NODE *
attrset_gen(struct parser_params *parser, NODE *recv, ID atype, ID id)
{
if (!CALL_Q_P(atype)) id = rb_id_attrset(id);
return NEW_ATTRASGN(recv, id, 0);
}
static void
rb_backref_error_gen(struct parser_params *parser, NODE *node)
{
switch (nd_type(node)) {
case NODE_NTH_REF:
compile_error(PARSER_ARG "Can't set variable $%ld", node->nd_nth);
break;
case NODE_BACK_REF:
compile_error(PARSER_ARG "Can't set variable $%c", (int)node->nd_nth);
break;
}
}
static NODE *
arg_concat_gen(struct parser_params *parser, NODE *node1, NODE *node2)
{
if (!node2) return node1;
switch (nd_type(node1)) {
case NODE_BLOCK_PASS:
if (node1->nd_head)
node1->nd_head = arg_concat(node1->nd_head, node2);
else
node1->nd_head = NEW_LIST(node2);
return node1;
case NODE_ARGSPUSH:
if (nd_type(node2) != NODE_ARRAY) break;
node1->nd_body = list_concat(NEW_LIST(node1->nd_body), node2);
nd_set_type(node1, NODE_ARGSCAT);
return node1;
case NODE_ARGSCAT:
if (nd_type(node2) != NODE_ARRAY ||
nd_type(node1->nd_body) != NODE_ARRAY) break;
node1->nd_body = list_concat(node1->nd_body, node2);
return node1;
}
return NEW_ARGSCAT(node1, node2);
}
static NODE *
arg_append_gen(struct parser_params *parser, NODE *node1, NODE *node2)
{
if (!node1) return NEW_LIST(node2);
switch (nd_type(node1)) {
case NODE_ARRAY:
return list_append(node1, node2);
case NODE_BLOCK_PASS:
node1->nd_head = arg_append(node1->nd_head, node2);
return node1;
case NODE_ARGSPUSH:
node1->nd_body = list_append(NEW_LIST(node1->nd_body), node2);
nd_set_type(node1, NODE_ARGSCAT);
return node1;
}
return NEW_ARGSPUSH(node1, node2);
}
static NODE *
splat_array(NODE* node)
{
if (nd_type(node) == NODE_SPLAT) node = node->nd_head;
if (nd_type(node) == NODE_ARRAY) return node;
return 0;
}
static NODE *
node_assign_gen(struct parser_params *parser, NODE *lhs, NODE *rhs)
{
if (!lhs) return 0;
switch (nd_type(lhs)) {
case NODE_GASGN:
case NODE_IASGN:
case NODE_IASGN2:
case NODE_LASGN:
case NODE_DASGN:
case NODE_DASGN_CURR:
case NODE_MASGN:
case NODE_CDECL:
case NODE_CVASGN:
lhs->nd_value = rhs;
break;
case NODE_ATTRASGN:
case NODE_CALL:
lhs->nd_args = arg_append(lhs->nd_args, rhs);
break;
default:
/* should not happen */
break;
}
return lhs;
}
static int
value_expr_gen(struct parser_params *parser, NODE *node)
{
int cond = 0;
if (!node) {
rb_warning0("empty expression");
}
while (node) {
switch (nd_type(node)) {
case NODE_RETURN:
case NODE_BREAK:
case NODE_NEXT:
case NODE_REDO:
case NODE_RETRY:
if (!cond) yyerror("void value expression");
/* or "control never reach"? */
return FALSE;
case NODE_BLOCK:
while (node->nd_next) {
node = node->nd_next;
}
node = node->nd_head;
break;
case NODE_BEGIN:
node = node->nd_body;
break;
case NODE_IF:
if (!node->nd_body) {
node = node->nd_else;
break;
}
else if (!node->nd_else) {
node = node->nd_body;
break;
}
if (!value_expr(node->nd_body)) return FALSE;
node = node->nd_else;
break;
case NODE_AND:
case NODE_OR:
cond = 1;
node = node->nd_2nd;
break;
default:
return TRUE;
}
}
return TRUE;
}
static void
void_expr_gen(struct parser_params *parser, NODE *node)
{
const char *useless = 0;
if (!RTEST(ruby_verbose)) return;
if (!node) return;
switch (nd_type(node)) {
case NODE_CALL:
switch (node->nd_mid) {
case '+':
case '-':
case '*':
case '/':
case '%':
case tPOW:
case tUPLUS:
case tUMINUS:
case '|':
case '^':
case '&':
case tCMP:
case '>':
case tGEQ:
case '<':
case tLEQ:
case tEQ:
case tNEQ:
useless = rb_id2name(node->nd_mid);
break;
}
break;
case NODE_LVAR:
case NODE_DVAR:
case NODE_GVAR:
case NODE_IVAR:
case NODE_CVAR:
case NODE_NTH_REF:
case NODE_BACK_REF:
useless = "a variable";
break;
case NODE_CONST:
useless = "a constant";
break;
case NODE_LIT:
case NODE_STR:
case NODE_DSTR:
case NODE_DREGX:
case NODE_DREGX_ONCE:
useless = "a literal";
break;
case NODE_COLON2:
case NODE_COLON3:
useless = "::";
break;
case NODE_DOT2:
useless = "..";
break;
case NODE_DOT3:
useless = "...";
break;
case NODE_SELF:
useless = "self";
break;
case NODE_NIL:
useless = "nil";
break;
case NODE_TRUE:
useless = "true";
break;
case NODE_FALSE:
useless = "false";
break;
case NODE_DEFINED:
useless = "defined?";
break;
}
if (useless) {
rb_warn1L(nd_line(node), "possibly useless use of %s in void context", WARN_S(useless));
}
}
static void
void_stmts_gen(struct parser_params *parser, NODE *node)
{
if (!RTEST(ruby_verbose)) return;
if (!node) return;
if (nd_type(node) != NODE_BLOCK) return;
for (;;) {
if (!node->nd_next) return;
void_expr0(node->nd_head);
node = node->nd_next;
}
}
static NODE *
remove_begin(NODE *node)
{
NODE **n = &node, *n1 = node;
while (n1 && nd_type(n1) == NODE_BEGIN && n1->nd_body) {
*n = n1 = n1->nd_body;
}
return node;
}
static NODE *
remove_begin_all(NODE *node)
{
NODE **n = &node, *n1 = node;
while (n1 && nd_type(n1) == NODE_BEGIN) {
*n = n1 = n1->nd_body;
}
return node;
}
static void
reduce_nodes_gen(struct parser_params *parser, NODE **body)
{
NODE *node = *body;
if (!node) {
*body = NEW_NIL();
return;
}
#define subnodes(n1, n2) \
((!node->n1) ? (node->n2 ? (body = &node->n2, 1) : 0) : \
(!node->n2) ? (body = &node->n1, 1) : \
(reduce_nodes(&node->n1), body = &node->n2, 1))
while (node) {
int newline = (int)(node->flags & NODE_FL_NEWLINE);
switch (nd_type(node)) {
end:
case NODE_NIL:
*body = 0;
return;
case NODE_RETURN:
*body = node = node->nd_stts;
if (newline && node) node->flags |= NODE_FL_NEWLINE;
continue;
case NODE_BEGIN:
*body = node = node->nd_body;
if (newline && node) node->flags |= NODE_FL_NEWLINE;
continue;
case NODE_BLOCK:
body = &node->nd_end->nd_head;
break;
case NODE_IF:
if (subnodes(nd_body, nd_else)) break;
return;
case NODE_CASE:
body = &node->nd_body;
break;
case NODE_WHEN:
if (!subnodes(nd_body, nd_next)) goto end;
break;
case NODE_ENSURE:
if (!subnodes(nd_head, nd_resq)) goto end;
break;
case NODE_RESCUE:
if (node->nd_else) {
body = &node->nd_resq;
break;
}
if (!subnodes(nd_head, nd_resq)) goto end;
break;
default:
return;
}
node = *body;
if (newline && node) node->flags |= NODE_FL_NEWLINE;
}
#undef subnodes
}
static int
is_static_content(NODE *node)
{
if (!node) return 1;
switch (nd_type(node)) {
case NODE_HASH:
if (!(node = node->nd_head)) break;
case NODE_ARRAY:
do {
if (!is_static_content(node->nd_head)) return 0;
} while ((node = node->nd_next) != 0);
case NODE_LIT:
case NODE_STR:
case NODE_NIL:
case NODE_TRUE:
case NODE_FALSE:
case NODE_ZARRAY:
break;
default:
return 0;
}
return 1;
}
static int
assign_in_cond(struct parser_params *parser, NODE *node)
{
switch (nd_type(node)) {
case NODE_MASGN:
case NODE_LASGN:
case NODE_DASGN:
case NODE_DASGN_CURR:
case NODE_GASGN:
case NODE_IASGN:
break;
default:
return 0;
}
if (!node->nd_value) return 1;
if (is_static_content(node->nd_value)) {
/* reports always */
parser_warn(node->nd_value, "found = in conditional, should be ==");
}
return 1;
}
static void
warn_unless_e_option(struct parser_params *parser, NODE *node, const char *str)
{
if (!e_option_supplied(parser)) parser_warn(node, str);
}
static void
warning_unless_e_option(struct parser_params *parser, NODE *node, const char *str)
{
if (!e_option_supplied(parser)) parser_warning(node, str);
}
static NODE *cond0(struct parser_params*,NODE*,int);
static NODE*
range_op(struct parser_params *parser, NODE *node)
{
enum node_type type;
if (node == 0) return 0;
type = nd_type(node);
value_expr(node);
if (type == NODE_LIT && FIXNUM_P(node->nd_lit)) {
warn_unless_e_option(parser, node, "integer literal in conditional range");
return NEW_CALL(node, tEQ, NEW_LIST(NEW_GVAR(rb_intern("$."))));
}
return cond0(parser, node, FALSE);
}
static int
literal_node(NODE *node)
{
if (!node) return 1; /* same as NODE_NIL */
switch (nd_type(node)) {
case NODE_LIT:
case NODE_STR:
case NODE_DSTR:
case NODE_EVSTR:
case NODE_DREGX:
case NODE_DREGX_ONCE:
case NODE_DSYM:
return 2;
case NODE_TRUE:
case NODE_FALSE:
case NODE_NIL:
return 1;
}
return 0;
}
static NODE*
cond0(struct parser_params *parser, NODE *node, int method_op)
{
if (node == 0) return 0;
assign_in_cond(parser, node);
switch (nd_type(node)) {
case NODE_DSTR:
case NODE_EVSTR:
case NODE_STR:
if (!method_op) rb_warn0("string literal in condition");
break;
case NODE_DREGX:
case NODE_DREGX_ONCE:
if (!method_op)
warning_unless_e_option(parser, node, "regex literal in condition");
return NEW_MATCH2(node, NEW_GVAR(idLASTLINE));
case NODE_AND:
case NODE_OR:
node->nd_1st = cond0(parser, node->nd_1st, FALSE);
node->nd_2nd = cond0(parser, node->nd_2nd, FALSE);
break;
case NODE_DOT2:
case NODE_DOT3:
node->nd_beg = range_op(parser, node->nd_beg);
node->nd_end = range_op(parser, node->nd_end);
if (nd_type(node) == NODE_DOT2) nd_set_type(node,NODE_FLIP2);
else if (nd_type(node) == NODE_DOT3) nd_set_type(node, NODE_FLIP3);
if (!method_op && !e_option_supplied(parser)) {
int b = literal_node(node->nd_beg);
int e = literal_node(node->nd_end);
if ((b == 1 && e == 1) || (b + e >= 2 && RTEST(ruby_verbose))) {
parser_warn(node, "range literal in condition");
}
}
break;
case NODE_DSYM:
if (!method_op) parser_warning(node, "literal in condition");
break;
case NODE_LIT:
if (RB_TYPE_P(node->nd_lit, T_REGEXP)) {
if (!method_op)
warn_unless_e_option(parser, node, "regex literal in condition");
nd_set_type(node, NODE_MATCH);
}
else {
if (!method_op)
parser_warning(node, "literal in condition");
}
default:
break;
}
return node;
}
static NODE*
cond_gen(struct parser_params *parser, NODE *node, int method_op)
{
if (node == 0) return 0;
return cond0(parser, node, method_op);
}
static NODE*
new_if_gen(struct parser_params *parser, NODE *cc, NODE *left, NODE *right)
{
if (!cc) return right;
cc = cond0(parser, cc, FALSE);
return newline_node(NEW_IF(cc, left, right));
}
static NODE*
logop_gen(struct parser_params *parser, enum node_type type, NODE *left, NODE *right)
{
value_expr(left);
if (left && (enum node_type)nd_type(left) == type) {
NODE *node = left, *second;
while ((second = node->nd_2nd) != 0 && (enum node_type)nd_type(second) == type) {
node = second;
}
node->nd_2nd = NEW_NODE(type, second, right, 0);
return left;
}
return NEW_NODE(type, left, right, 0);
}
static void
no_blockarg(struct parser_params *parser, NODE *node)
{
if (node && nd_type(node) == NODE_BLOCK_PASS) {
compile_error(PARSER_ARG "block argument should not be given");
}
}
static NODE *
ret_args_gen(struct parser_params *parser, NODE *node)
{
if (node) {
no_blockarg(parser, node);
if (nd_type(node) == NODE_ARRAY) {
if (node->nd_next == 0) {
node = node->nd_head;
}
else {
nd_set_type(node, NODE_VALUES);
}
}
}
return node;
}
static NODE *
new_yield_gen(struct parser_params *parser, NODE *node)
{
if (node) no_blockarg(parser, node);
return NEW_YIELD(node);
}
static VALUE
negate_lit(VALUE lit)
{
int type = TYPE(lit);
switch (type) {
case T_FIXNUM:
lit = LONG2FIX(-FIX2LONG(lit));
break;
case T_BIGNUM:
BIGNUM_NEGATE(lit);
lit = rb_big_norm(lit);
break;
case T_RATIONAL:
RRATIONAL_SET_NUM(lit, negate_lit(RRATIONAL(lit)->num));
break;
case T_COMPLEX:
RCOMPLEX_SET_REAL(lit, negate_lit(RCOMPLEX(lit)->real));
RCOMPLEX_SET_IMAG(lit, negate_lit(RCOMPLEX(lit)->imag));
break;
case T_FLOAT:
#if USE_FLONUM
if (FLONUM_P(lit)) {
lit = DBL2NUM(-RFLOAT_VALUE(lit));
break;
}
#endif
RFLOAT(lit)->float_value = -RFLOAT_VALUE(lit);
break;
default:
rb_bug("unknown literal type (%d) passed to negate_lit", type);
break;
}
return lit;
}
static NODE *
arg_blk_pass(NODE *node1, NODE *node2)
{
if (node2) {
node2->nd_head = node1;
return node2;
}
return node1;
}
static NODE*
new_args_gen(struct parser_params *parser, NODE *m, NODE *o, ID r, NODE *p, NODE *tail)
{
int saved_line = ruby_sourceline;
struct rb_args_info *args = tail->nd_ainfo;
args->pre_args_num = m ? rb_long2int(m->nd_plen) : 0;
args->pre_init = m ? m->nd_next : 0;
args->post_args_num = p ? rb_long2int(p->nd_plen) : 0;
args->post_init = p ? p->nd_next : 0;
args->first_post_arg = p ? p->nd_pid : 0;
args->rest_arg = r;
args->opt_args = o;
ruby_sourceline = saved_line;
return tail;
}
static NODE*
new_args_tail_gen(struct parser_params *parser, NODE *k, ID kr, ID b)
{
int saved_line = ruby_sourceline;
struct rb_args_info *args;
NODE *node;
args = ZALLOC(struct rb_args_info);
node = NEW_NODE(NODE_ARGS, 0, 0, args);
args->block_arg = b;
args->kw_args = k;
if (k) {
/*
* def foo(k1: 1, kr1:, k2: 2, **krest, &b)
* variable order: k1, kr1, k2, &b, internal_id, krest
* #=> <reorder>
* variable order: kr1, k1, k2, internal_id, krest, &b
*/
ID kw_bits;
NODE *kwn = k;
struct vtable *required_kw_vars = vtable_alloc(NULL);
struct vtable *kw_vars = vtable_alloc(NULL);
int i;
while (kwn) {
NODE *val_node = kwn->nd_body->nd_value;
ID vid = kwn->nd_body->nd_vid;
if (val_node == (NODE *)-1) {
vtable_add(required_kw_vars, vid);
}
else {
vtable_add(kw_vars, vid);
}
kwn = kwn->nd_next;
}
kw_bits = internal_id();
if (kr && is_junk_id(kr)) vtable_pop(lvtbl->args, 1);
vtable_pop(lvtbl->args, vtable_size(required_kw_vars) + vtable_size(kw_vars) + (b != 0));
for (i=0; i<vtable_size(required_kw_vars); i++) arg_var(required_kw_vars->tbl[i]);
for (i=0; i<vtable_size(kw_vars); i++) arg_var(kw_vars->tbl[i]);
vtable_free(required_kw_vars);
vtable_free(kw_vars);
arg_var(kw_bits);
if (kr) arg_var(kr);
if (b) arg_var(b);
args->kw_rest_arg = NEW_DVAR(kr);
args->kw_rest_arg->nd_cflag = kw_bits;
}
else if (kr) {
if (b) vtable_pop(lvtbl->args, 1); /* reorder */
arg_var(kr);
if (b) arg_var(b);
args->kw_rest_arg = NEW_DVAR(kr);
}
ruby_sourceline = saved_line;
return node;
}
static NODE*
dsym_node_gen(struct parser_params *parser, NODE *node)
{
VALUE lit;
if (!node) {
return NEW_LIT(ID2SYM(idNULL));
}
switch (nd_type(node)) {
case NODE_DSTR:
nd_set_type(node, NODE_DSYM);
break;
case NODE_STR:
lit = node->nd_lit;
node->nd_lit = ID2SYM(rb_intern_str(lit));
nd_set_type(node, NODE_LIT);
break;
default:
node = NEW_NODE(NODE_DSYM, Qnil, 1, NEW_LIST(node));
break;
}
return node;
}
static int
append_literal_keys(st_data_t k, st_data_t v, st_data_t h)
{
NODE *node = (NODE *)v;
NODE **result = (NODE **)h;
node->nd_alen = 2;
node->nd_next->nd_end = node->nd_next;
node->nd_next->nd_next = 0;
if (*result)
list_concat(*result, node);
else
*result = node;
return ST_CONTINUE;
}
static NODE *
remove_duplicate_keys(struct parser_params *parser, NODE *hash)
{
st_table *literal_keys = st_init_numtable_with_size(hash->nd_alen / 2);
NODE *result = 0;
while (hash && hash->nd_head && hash->nd_next) {
NODE *head = hash->nd_head;
NODE *value = hash->nd_next;
NODE *next = value->nd_next;
VALUE key = (VALUE)head;
st_data_t data;
if (nd_type(head) == NODE_LIT &&
st_lookup(literal_keys, (key = head->nd_lit), &data)) {
rb_compile_warn(ruby_sourcefile, nd_line((NODE *)data),
"key %+"PRIsVALUE" is duplicated and overwritten on line %d",
head->nd_lit, nd_line(head));
head = ((NODE *)data)->nd_next;
head->nd_head = block_append(head->nd_head, value->nd_head);
}
else {
st_insert(literal_keys, (st_data_t)key, (st_data_t)hash);
}
hash = next;
}
st_foreach(literal_keys, append_literal_keys, (st_data_t)&result);
st_free_table(literal_keys);
if (hash) {
if (!result) result = hash;
else list_concat(result, hash);
}
return result;
}
static NODE *
new_hash_gen(struct parser_params *parser, NODE *hash)
{
if (hash) hash = remove_duplicate_keys(parser, hash);
return NEW_HASH(hash);
}
#endif /* !RIPPER */
#ifndef RIPPER
static NODE *
new_op_assign_gen(struct parser_params *parser, NODE *lhs, ID op, NODE *rhs)
{
NODE *asgn;
if (lhs) {
ID vid = lhs->nd_vid;
if (op == tOROP) {
lhs->nd_value = rhs;
asgn = NEW_OP_ASGN_OR(gettable(vid), lhs);
if (is_notop_id(vid)) {
switch (id_type(vid)) {
case ID_GLOBAL:
case ID_INSTANCE:
case ID_CLASS:
asgn->nd_aid = vid;
}
}
}
else if (op == tANDOP) {
lhs->nd_value = rhs;
asgn = NEW_OP_ASGN_AND(gettable(vid), lhs);
}
else {
asgn = lhs;
asgn->nd_value = NEW_CALL(gettable(vid), op, NEW_LIST(rhs));
}
}
else {
asgn = NEW_BEGIN(0);
}
return asgn;
}
static NODE *
new_attr_op_assign_gen(struct parser_params *parser, NODE *lhs,
ID atype, ID attr, ID op, NODE *rhs)
{
NODE *asgn;
if (op == tOROP) {
op = 0;
}
else if (op == tANDOP) {
op = 1;
}
asgn = NEW_OP_ASGN2(lhs, CALL_Q_P(atype), attr, op, rhs);
fixpos(asgn, lhs);
return asgn;
}
static NODE *
new_const_op_assign_gen(struct parser_params *parser, NODE *lhs, ID op, NODE *rhs)
{
NODE *asgn;
if (op == tOROP) {
op = 0;
}
else if (op == tANDOP) {
op = 1;
}
if (lhs) {
asgn = NEW_OP_CDECL(lhs, op, rhs);
}
else {
asgn = NEW_BEGIN(0);
}
fixpos(asgn, lhs);
return asgn;
}
static NODE *
const_decl_gen(struct parser_params *parser, NODE *path)
{
if (in_def || in_single) {
yyerror("dynamic constant assignment");
}
return NEW_CDECL(0, 0, (path));
}
#else
static VALUE
new_op_assign_gen(struct parser_params *parser, VALUE lhs, VALUE op, VALUE rhs)
{
return dispatch3(opassign, lhs, op, rhs);
}
static VALUE
new_attr_op_assign_gen(struct parser_params *parser, VALUE lhs, VALUE type, VALUE attr, VALUE op, VALUE rhs)
{
VALUE recv = dispatch3(field, lhs, type, attr);
return dispatch3(opassign, recv, op, rhs);
}
static VALUE
new_qcall_gen(struct parser_params *parser, VALUE r, VALUE q, VALUE m, VALUE a)
{
VALUE ret = dispatch3(call, (r), (q), (m));
return method_optarg(ret, (a));
}
static VALUE
const_decl_gen(struct parser_params *parser, VALUE path)
{
if (in_def || in_single) {
assign_error(path);
}
return path;
}
static VALUE
assign_error_gen(struct parser_params *parser, VALUE a)
{
a = dispatch1(assign_error, a);
ripper_error();
return a;
}
#endif
static void
warn_unused_var(struct parser_params *parser, struct local_vars *local)
{
int i, cnt;
ID *v, *u;
if (!local->used) return;
v = local->vars->tbl;
u = local->used->tbl;
cnt = local->used->pos;
if (cnt != local->vars->pos) {
rb_bug("local->used->pos != local->vars->pos");
}
for (i = 0; i < cnt; ++i) {
if (!v[i] || (u[i] & LVAR_USED)) continue;
if (is_private_local_id(v[i])) continue;
rb_warn1L((int)u[i], "assigned but unused variable - %"PRIsWARN, rb_id2str(v[i]));
}
}
static void
local_push_gen(struct parser_params *parser, int inherit_dvars)
{
struct local_vars *local;
local = ALLOC(struct local_vars);
local->prev = lvtbl;
local->args = vtable_alloc(0);
local->vars = vtable_alloc(inherit_dvars ? DVARS_INHERIT : DVARS_TOPSCOPE);
local->used = !(inherit_dvars &&
(ifndef_ripper(compile_for_eval || e_option_supplied(parser))+0)) &&
RTEST(ruby_verbose) ? vtable_alloc(0) : 0;
# if WARN_PAST_SCOPE
local->past = 0;
# endif
local->cmdargs = cmdarg_stack;
CMDARG_SET(0);
lvtbl = local;
}
static void
local_pop_gen(struct parser_params *parser)
{
struct local_vars *local = lvtbl->prev;
if (lvtbl->used) {
warn_unused_var(parser, lvtbl);
vtable_free(lvtbl->used);
}
# if WARN_PAST_SCOPE
while (lvtbl->past) {
struct vtable *past = lvtbl->past;
lvtbl->past = past->prev;
vtable_free(past);
}
# endif
vtable_free(lvtbl->args);
vtable_free(lvtbl->vars);
CMDARG_SET(lvtbl->cmdargs);
xfree(lvtbl);
lvtbl = local;
}
#ifndef RIPPER
static ID*
local_tbl_gen(struct parser_params *parser)
{
int cnt_args = vtable_size(lvtbl->args);
int cnt_vars = vtable_size(lvtbl->vars);
int cnt = cnt_args + cnt_vars;
int i, j;
ID *buf;
if (cnt <= 0) return 0;
buf = ALLOC_N(ID, cnt + 1);
MEMCPY(buf+1, lvtbl->args->tbl, ID, cnt_args);
/* remove IDs duplicated to warn shadowing */
for (i = 0, j = cnt_args+1; i < cnt_vars; ++i) {
ID id = lvtbl->vars->tbl[i];
if (!vtable_included(lvtbl->args, id)) {
buf[j++] = id;
}
}
if (--j < cnt) REALLOC_N(buf, ID, (cnt = j) + 1);
buf[0] = cnt;
return buf;
}
#endif
static void
arg_var_gen(struct parser_params *parser, ID id)
{
vtable_add(lvtbl->args, id);
}
static void
local_var_gen(struct parser_params *parser, ID id)
{
vtable_add(lvtbl->vars, id);
if (lvtbl->used) {
vtable_add(lvtbl->used, (ID)ruby_sourceline);
}
}
static int
local_id_gen(struct parser_params *parser, ID id)
{
struct vtable *vars, *args, *used;
vars = lvtbl->vars;
args = lvtbl->args;
used = lvtbl->used;
while (vars && POINTER_P(vars->prev)) {
vars = vars->prev;
args = args->prev;
if (used) used = used->prev;
}
if (vars && vars->prev == DVARS_INHERIT) {
return rb_local_defined(id, parser->base_block);
}
else if (vtable_included(args, id)) {
return 1;
}
else {
int i = vtable_included(vars, id);
if (i && used) used->tbl[i-1] |= LVAR_USED;
return i != 0;
}
}
static const struct vtable *
dyna_push_gen(struct parser_params *parser)
{
lvtbl->args = vtable_alloc(lvtbl->args);
lvtbl->vars = vtable_alloc(lvtbl->vars);
if (lvtbl->used) {
lvtbl->used = vtable_alloc(lvtbl->used);
}
return lvtbl->args;
}
static void
dyna_pop_vtable(struct parser_params *parser, struct vtable **vtblp)
{
struct vtable *tmp = *vtblp;
*vtblp = tmp->prev;
# if WARN_PAST_SCOPE
if (parser->past_scope_enabled) {
tmp->prev = lvtbl->past;
lvtbl->past = tmp;
return;
}
# endif
vtable_free(tmp);
}
static void
dyna_pop_1(struct parser_params *parser)
{
struct vtable *tmp;
if ((tmp = lvtbl->used) != 0) {
warn_unused_var(parser, lvtbl);
lvtbl->used = lvtbl->used->prev;
vtable_free(tmp);
}
dyna_pop_vtable(parser, &lvtbl->args);
dyna_pop_vtable(parser, &lvtbl->vars);
}
static void
dyna_pop_gen(struct parser_params *parser, const struct vtable *lvargs)
{
while (lvtbl->args != lvargs) {
dyna_pop_1(parser);
if (!lvtbl->args) {
struct local_vars *local = lvtbl->prev;
xfree(lvtbl);
lvtbl = local;
}
}
dyna_pop_1(parser);
}
static int
dyna_in_block_gen(struct parser_params *parser)
{
return POINTER_P(lvtbl->vars) && lvtbl->vars->prev != DVARS_TOPSCOPE;
}
static int
dvar_defined_gen(struct parser_params *parser, ID id, int get)
{
struct vtable *vars, *args, *used;
int i;
args = lvtbl->args;
vars = lvtbl->vars;
used = lvtbl->used;
while (POINTER_P(vars)) {
if (vtable_included(args, id)) {
return 1;
}
if ((i = vtable_included(vars, id)) != 0) {
if (used) used->tbl[i-1] |= LVAR_USED;
return 1;
}
args = args->prev;
vars = vars->prev;
if (get) used = 0;
if (used) used = used->prev;
}
if (vars == DVARS_INHERIT) {
return rb_dvar_defined(id, parser->base_block);
}
return 0;
}
static int
dvar_curr_gen(struct parser_params *parser, ID id)
{
return (vtable_included(lvtbl->args, id) ||
vtable_included(lvtbl->vars, id));
}
static void
reg_fragment_enc_error(struct parser_params* parser, VALUE str, int c)
{
compile_error(PARSER_ARG
"regexp encoding option '%c' differs from source encoding '%s'",
c, rb_enc_name(rb_enc_get(str)));
}
#ifndef RIPPER
int
rb_reg_fragment_setenc(struct parser_params* parser, VALUE str, int options)
{
int c = RE_OPTION_ENCODING_IDX(options);
if (c) {
int opt, idx;
rb_char_to_option_kcode(c, &opt, &idx);
if (idx != ENCODING_GET(str) &&
rb_enc_str_coderange(str) != ENC_CODERANGE_7BIT) {
goto error;
}
ENCODING_SET(str, idx);
}
else if (RE_OPTION_ENCODING_NONE(options)) {
if (!ENCODING_IS_ASCII8BIT(str) &&
rb_enc_str_coderange(str) != ENC_CODERANGE_7BIT) {
c = 'n';
goto error;
}
rb_enc_associate(str, rb_ascii8bit_encoding());
}
else if (current_enc == rb_usascii_encoding()) {
if (rb_enc_str_coderange(str) != ENC_CODERANGE_7BIT) {
/* raise in re.c */
rb_enc_associate(str, rb_usascii_encoding());
}
else {
rb_enc_associate(str, rb_ascii8bit_encoding());
}
}
return 0;
error:
return c;
}
static void
reg_fragment_setenc_gen(struct parser_params* parser, VALUE str, int options)
{
int c = rb_reg_fragment_setenc(parser, str, options);
if (c) reg_fragment_enc_error(parser, str, c);
}
static int
reg_fragment_check_gen(struct parser_params* parser, VALUE str, int options)
{
VALUE err;
reg_fragment_setenc(str, options);
err = rb_reg_check_preprocess(str);
if (err != Qnil) {
err = rb_obj_as_string(err);
compile_error(PARSER_ARG "%"PRIsVALUE, err);
return 0;
}
return 1;
}
typedef struct {
struct parser_params* parser;
rb_encoding *enc;
NODE *succ_block;
} reg_named_capture_assign_t;
static int
reg_named_capture_assign_iter(const OnigUChar *name, const OnigUChar *name_end,
int back_num, int *back_refs, OnigRegex regex, void *arg0)
{
reg_named_capture_assign_t *arg = (reg_named_capture_assign_t*)arg0;
struct parser_params* parser = arg->parser;
rb_encoding *enc = arg->enc;
long len = name_end - name;
const char *s = (const char *)name;
ID var;
NODE *node, *succ;
if (!len || (*name != '_' && ISASCII(*name) && !rb_enc_islower(*name, enc)) ||
(len < MAX_WORD_LENGTH && rb_reserved_word(s, (int)len)) ||
!rb_enc_symname2_p(s, len, enc)) {
return ST_CONTINUE;
}
var = intern_cstr(s, len, enc);
node = newline_node(node_assign(assignable(var, 0), NEW_LIT(ID2SYM(var))));
succ = arg->succ_block;
if (!succ) succ = NEW_BEGIN(0);
succ = block_append(succ, node);
arg->succ_block = succ;
return ST_CONTINUE;
}
static NODE *
reg_named_capture_assign_gen(struct parser_params* parser, VALUE regexp)
{
reg_named_capture_assign_t arg;
arg.parser = parser;
arg.enc = rb_enc_get(regexp);
arg.succ_block = 0;
onig_foreach_name(RREGEXP_PTR(regexp), reg_named_capture_assign_iter, &arg);
if (!arg.succ_block) return 0;
return arg.succ_block->nd_next;
}
static VALUE
parser_reg_compile(struct parser_params* parser, VALUE str, int options)
{
reg_fragment_setenc(str, options);
return rb_parser_reg_compile(parser, str, options);
}
VALUE
rb_parser_reg_compile(struct parser_params* parser, VALUE str, int options)
{
return rb_reg_compile(str, options & RE_OPTION_MASK, ruby_sourcefile, ruby_sourceline);
}
static VALUE
reg_compile_gen(struct parser_params* parser, VALUE str, int options)
{
VALUE re;
VALUE err;
err = rb_errinfo();
re = parser_reg_compile(parser, str, options);
if (NIL_P(re)) {
VALUE m = rb_attr_get(rb_errinfo(), idMesg);
rb_set_errinfo(err);
compile_error(PARSER_ARG "%"PRIsVALUE, m);
return Qnil;
}
return re;
}
#else
static VALUE
parser_reg_compile(struct parser_params* parser, VALUE str, int options, VALUE *errmsg)
{
VALUE err = rb_errinfo();
VALUE re;
int c = rb_reg_fragment_setenc(parser, str, options);
if (c) reg_fragment_enc_error(parser, str, c);
re = rb_parser_reg_compile(parser, str, options);
if (NIL_P(re)) {
*errmsg = rb_attr_get(rb_errinfo(), idMesg);
rb_set_errinfo(err);
}
return re;
}
#endif
#ifndef RIPPER
NODE*
rb_parser_append_print(VALUE vparser, NODE *node)
{
NODE *prelude = 0;
NODE *scope = node;
struct parser_params *parser;
if (!node) return node;
TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, parser);
node = node->nd_body;
if (nd_type(node) == NODE_PRELUDE) {
prelude = node;
node = node->nd_body;
}
node = block_append(node,
NEW_FCALL(rb_intern("print"),
NEW_ARRAY(NEW_GVAR(idLASTLINE))));
if (prelude) {
prelude->nd_body = node;
scope->nd_body = prelude;
}
else {
scope->nd_body = node;
}
return scope;
}
NODE *
rb_parser_while_loop(VALUE vparser, NODE *node, int chomp, int split)
{
NODE *prelude = 0;
NODE *scope = node;
struct parser_params *parser;
if (!node) return node;
TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, parser);
node = node->nd_body;
if (nd_type(node) == NODE_PRELUDE) {
prelude = node;
node = node->nd_body;
}
if (split) {
node = block_append(NEW_GASGN(rb_intern("$F"),
NEW_CALL(NEW_GVAR(idLASTLINE),
rb_intern("split"), 0)),
node);
}
if (chomp) {
node = block_append(NEW_CALL(NEW_GVAR(idLASTLINE),
rb_intern("chomp!"), 0), node);
}
node = NEW_OPT_N(node);
if (prelude) {
prelude->nd_body = node;
scope->nd_body = prelude;
}
else {
scope->nd_body = node;
}
return scope;
}
void
rb_init_parse(void)
{
/* just to suppress unused-function warnings */
(void)nodetype;
(void)nodeline;
}
#endif /* !RIPPER */
static ID
internal_id_gen(struct parser_params *parser)
{
ID id = (ID)vtable_size(lvtbl->args) + (ID)vtable_size(lvtbl->vars);
id += ((tLAST_TOKEN - ID_INTERNAL) >> ID_SCOPE_SHIFT) + 1;
return ID_STATIC_SYM | ID_INTERNAL | (id << ID_SCOPE_SHIFT);
}
static void
parser_initialize(struct parser_params *parser)
{
/* note: we rely on TypedData_Make_Struct to set most fields to 0 */
command_start = TRUE;
ruby_sourcefile_string = Qnil;
#ifdef RIPPER
parser->delayed = Qnil;
parser->result = Qnil;
parser->parsing_thread = Qnil;
#else
parser->error_buffer = Qfalse;
#endif
parser->debug_buffer = Qnil;
parser->enc = rb_utf8_encoding();
}
#ifdef RIPPER
#define parser_mark ripper_parser_mark
#define parser_free ripper_parser_free
#endif
static void
parser_mark(void *ptr)
{
struct parser_params *parser = (struct parser_params*)ptr;
rb_gc_mark((VALUE)lex_strterm);
rb_gc_mark(lex_input);
rb_gc_mark(lex_lastline);
rb_gc_mark(lex_nextline);
rb_gc_mark(ruby_sourcefile_string);
#ifndef RIPPER
rb_gc_mark((VALUE)ruby_eval_tree_begin);
rb_gc_mark((VALUE)ruby_eval_tree);
rb_gc_mark(ruby_debug_lines);
rb_gc_mark(parser->compile_option);
rb_gc_mark(parser->error_buffer);
#else
rb_gc_mark(parser->delayed);
rb_gc_mark(parser->value);
rb_gc_mark(parser->result);
rb_gc_mark(parser->parsing_thread);
#endif
rb_gc_mark(parser->debug_buffer);
#ifdef YYMALLOC
rb_gc_mark((VALUE)parser->heap);
#endif
}
static void
parser_free(void *ptr)
{
struct parser_params *parser = (struct parser_params*)ptr;
struct local_vars *local, *prev;
if (tokenbuf) {
xfree(tokenbuf);
}
for (local = lvtbl; local; local = prev) {
if (local->vars) xfree(local->vars);
prev = local->prev;
xfree(local);
}
{
token_info *ptinfo;
while ((ptinfo = parser->token_info) != 0) {
parser->token_info = ptinfo->next;
xfree(ptinfo);
}
}
xfree(ptr);
}
static size_t
parser_memsize(const void *ptr)
{
struct parser_params *parser = (struct parser_params*)ptr;
struct local_vars *local;
size_t size = sizeof(*parser);
size += toksiz;
for (local = lvtbl; local; local = local->prev) {
size += sizeof(*local);
if (local->vars) size += local->vars->capa * sizeof(ID);
}
return size;
}
static const rb_data_type_t parser_data_type = {
#ifndef RIPPER
"parser",
#else
"ripper",
#endif
{
parser_mark,
parser_free,
parser_memsize,
},
0, 0, RUBY_TYPED_FREE_IMMEDIATELY
};
#ifndef RIPPER
#undef rb_reserved_word
const struct kwtable *
rb_reserved_word(const char *str, unsigned int len)
{
return reserved_word(str, len);
}
VALUE
rb_parser_new(void)
{
struct parser_params *p;
VALUE parser = TypedData_Make_Struct(0, struct parser_params,
&parser_data_type, p);
parser_initialize(p);
return parser;
}
VALUE
rb_parser_set_context(VALUE vparser, const struct rb_block *base, int main)
{
struct parser_params *parser;
TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, parser);
parser->error_buffer = main ? Qfalse : Qnil;
parser->base_block = base;
in_main = main;
return vparser;
}
#endif
#ifdef RIPPER
#define rb_parser_end_seen_p ripper_parser_end_seen_p
#define rb_parser_encoding ripper_parser_encoding
#define rb_parser_get_yydebug ripper_parser_get_yydebug
#define rb_parser_set_yydebug ripper_parser_set_yydebug
static VALUE ripper_parser_end_seen_p(VALUE vparser);
static VALUE ripper_parser_encoding(VALUE vparser);
static VALUE ripper_parser_get_yydebug(VALUE self);
static VALUE ripper_parser_set_yydebug(VALUE self, VALUE flag);
/*
* call-seq:
* ripper#error? -> Boolean
*
* Return true if parsed source has errors.
*/
static VALUE
ripper_error_p(VALUE vparser)
{
struct parser_params *parser;
TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, parser);
return parser->error_p ? Qtrue : Qfalse;
}
#endif
/*
* call-seq:
* ripper#end_seen? -> Boolean
*
* Return true if parsed source ended by +\_\_END\_\_+.
*/
VALUE
rb_parser_end_seen_p(VALUE vparser)
{
struct parser_params *parser;
TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, parser);
return ruby__end__seen ? Qtrue : Qfalse;
}
/*
* call-seq:
* ripper#encoding -> encoding
*
* Return encoding of the source.
*/
VALUE
rb_parser_encoding(VALUE vparser)
{
struct parser_params *parser;
TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, parser);
return rb_enc_from_encoding(current_enc);
}
/*
* call-seq:
* ripper.yydebug -> true or false
*
* Get yydebug.
*/
VALUE
rb_parser_get_yydebug(VALUE self)
{
struct parser_params *parser;
TypedData_Get_Struct(self, struct parser_params, &parser_data_type, parser);
return yydebug ? Qtrue : Qfalse;
}
/*
* call-seq:
* ripper.yydebug = flag
*
* Set yydebug.
*/
VALUE
rb_parser_set_yydebug(VALUE self, VALUE flag)
{
struct parser_params *parser;
TypedData_Get_Struct(self, struct parser_params, &parser_data_type, parser);
yydebug = RTEST(flag);
return flag;
}
#ifndef RIPPER
#ifdef YYMALLOC
#define HEAPCNT(n, size) ((n) * (size) / sizeof(YYSTYPE))
#define NEWHEAP() rb_node_newnode(NODE_ALLOCA, 0, (VALUE)parser->heap, 0)
#define ADD2HEAP(n, c, p) ((parser->heap = (n))->u1.node = (p), \
(n)->u3.cnt = (c), (p))
void *
rb_parser_malloc(struct parser_params *parser, size_t size)
{
size_t cnt = HEAPCNT(1, size);
NODE *n = NEWHEAP();
void *ptr = xmalloc(size);
return ADD2HEAP(n, cnt, ptr);
}
void *
rb_parser_calloc(struct parser_params *parser, size_t nelem, size_t size)
{
size_t cnt = HEAPCNT(nelem, size);
NODE *n = NEWHEAP();
void *ptr = xcalloc(nelem, size);
return ADD2HEAP(n, cnt, ptr);
}
void *
rb_parser_realloc(struct parser_params *parser, void *ptr, size_t size)
{
NODE *n;
size_t cnt = HEAPCNT(1, size);
if (ptr && (n = parser->heap) != NULL) {
do {
if (n->u1.node == ptr) {
n->u1.node = ptr = xrealloc(ptr, size);
if (n->u3.cnt) n->u3.cnt = cnt;
return ptr;
}
} while ((n = n->u2.node) != NULL);
}
n = NEWHEAP();
ptr = xrealloc(ptr, size);
return ADD2HEAP(n, cnt, ptr);
}
void
rb_parser_free(struct parser_params *parser, void *ptr)
{
NODE **prev = &parser->heap, *n;
while ((n = *prev) != NULL) {
if (n->u1.node == ptr) {
*prev = n->u2.node;
rb_gc_force_recycle((VALUE)n);
break;
}
prev = &n->u2.node;
}
xfree(ptr);
}
#endif
void
rb_parser_printf(struct parser_params *parser, const char *fmt, ...)
{
va_list ap;
VALUE mesg = parser->debug_buffer;
if (NIL_P(mesg)) parser->debug_buffer = mesg = rb_str_new(0, 0);
va_start(ap, fmt);
rb_str_vcatf(mesg, fmt, ap);
va_end(ap);
if (RSTRING_END(mesg)[-1] == '\n') {
rb_io_write(rb_stdout, mesg);
parser->debug_buffer = Qnil;
}
}
static void
parser_compile_error(struct parser_params *parser, const char *fmt, ...)
{
va_list ap;
parser->error_p = 1;
va_start(ap, fmt);
parser->error_buffer =
rb_syntax_error_append(parser->error_buffer,
ruby_sourcefile_string,
ruby_sourceline,
rb_long2int(lex_p - lex_pbeg),
current_enc, fmt, ap);
va_end(ap);
}
#endif
#ifdef RIPPER
#ifdef RIPPER_DEBUG
extern int rb_is_pointer_to_heap(VALUE);
/* :nodoc: */
static VALUE
ripper_validate_object(VALUE self, VALUE x)
{
if (x == Qfalse) return x;
if (x == Qtrue) return x;
if (x == Qnil) return x;
if (x == Qundef)
rb_raise(rb_eArgError, "Qundef given");
if (FIXNUM_P(x)) return x;
if (SYMBOL_P(x)) return x;
if (!rb_is_pointer_to_heap(x))
rb_raise(rb_eArgError, "invalid pointer: %p", x);
switch (BUILTIN_TYPE(x)) {
case T_STRING:
case T_OBJECT:
case T_ARRAY:
case T_BIGNUM:
case T_FLOAT:
case T_COMPLEX:
case T_RATIONAL:
return x;
case T_NODE:
if (nd_type(x) != NODE_RIPPER) {
rb_raise(rb_eArgError, "NODE given: %p", x);
}
return ((NODE *)x)->nd_rval;
default:
rb_raise(rb_eArgError, "wrong type of ruby object: %p (%s)",
x, rb_obj_classname(x));
}
return x;
}
#endif
#define validate(x) ((x) = get_value(x))
static VALUE
ripper_dispatch0(struct parser_params *parser, ID mid)
{
return rb_funcall(parser->value, mid, 0);
}
static VALUE
ripper_dispatch1(struct parser_params *parser, ID mid, VALUE a)
{
validate(a);
return rb_funcall(parser->value, mid, 1, a);
}
static VALUE
ripper_dispatch2(struct parser_params *parser, ID mid, VALUE a, VALUE b)
{
validate(a);
validate(b);
return rb_funcall(parser->value, mid, 2, a, b);
}
static VALUE
ripper_dispatch3(struct parser_params *parser, ID mid, VALUE a, VALUE b, VALUE c)
{
validate(a);
validate(b);
validate(c);
return rb_funcall(parser->value, mid, 3, a, b, c);
}
static VALUE
ripper_dispatch4(struct parser_params *parser, ID mid, VALUE a, VALUE b, VALUE c, VALUE d)
{
validate(a);
validate(b);
validate(c);
validate(d);
return rb_funcall(parser->value, mid, 4, a, b, c, d);
}
static VALUE
ripper_dispatch5(struct parser_params *parser, ID mid, VALUE a, VALUE b, VALUE c, VALUE d, VALUE e)
{
validate(a);
validate(b);
validate(c);
validate(d);
validate(e);
return rb_funcall(parser->value, mid, 5, a, b, c, d, e);
}
static VALUE
ripper_dispatch7(struct parser_params *parser, ID mid, VALUE a, VALUE b, VALUE c, VALUE d, VALUE e, VALUE f, VALUE g)
{
validate(a);
validate(b);
validate(c);
validate(d);
validate(e);
validate(f);
validate(g);
return rb_funcall(parser->value, mid, 7, a, b, c, d, e, f, g);
}
static ID
ripper_get_id(VALUE v)
{
NODE *nd;
if (!RB_TYPE_P(v, T_NODE)) return 0;
nd = (NODE *)v;
if (nd_type(nd) != NODE_RIPPER) return 0;
return nd->nd_vid;
}
static VALUE
ripper_get_value(VALUE v)
{
NODE *nd;
if (v == Qundef) return Qnil;
if (!RB_TYPE_P(v, T_NODE)) return v;
nd = (NODE *)v;
if (nd_type(nd) != NODE_RIPPER) return Qnil;
return nd->nd_rval;
}
static void
ripper_error_gen(struct parser_params *parser)
{
parser->error_p = TRUE;
}
static void
ripper_compile_error(struct parser_params *parser, const char *fmt, ...)
{
VALUE str;
va_list args;
va_start(args, fmt);
str = rb_vsprintf(fmt, args);
va_end(args);
rb_funcall(parser->value, rb_intern("compile_error"), 1, str);
ripper_error_gen(parser);
}
static VALUE
ripper_lex_get_generic(struct parser_params *parser, VALUE src)
{
VALUE line = rb_funcallv_public(src, id_gets, 0, 0);
if (!NIL_P(line) && !RB_TYPE_P(line, T_STRING)) {
rb_raise(rb_eTypeError,
"gets returned %"PRIsVALUE" (expected String or nil)",
rb_obj_class(line));
}
return line;
}
static VALUE
ripper_lex_io_get(struct parser_params *parser, VALUE src)
{
return rb_io_gets(src);
}
static VALUE
ripper_s_allocate(VALUE klass)
{
struct parser_params *p;
VALUE self = TypedData_Make_Struct(klass, struct parser_params,
&parser_data_type, p);
p->value = self;
return self;
}
#define ripper_initialized_p(r) ((r)->lex.input != 0)
/*
* call-seq:
* Ripper.new(src, filename="(ripper)", lineno=1) -> ripper
*
* Create a new Ripper object.
* _src_ must be a String, an IO, or an Object which has #gets method.
*
* This method does not starts parsing.
* See also Ripper#parse and Ripper.parse.
*/
static VALUE
ripper_initialize(int argc, VALUE *argv, VALUE self)
{
struct parser_params *parser;
VALUE src, fname, lineno;
TypedData_Get_Struct(self, struct parser_params, &parser_data_type, parser);
rb_scan_args(argc, argv, "12", &src, &fname, &lineno);
if (RB_TYPE_P(src, T_FILE)) {
lex_gets = ripper_lex_io_get;
}
else if (rb_respond_to(src, id_gets)) {
lex_gets = ripper_lex_get_generic;
}
else {
StringValue(src);
lex_gets = lex_get_str;
}
lex_input = src;
parser->eofp = 0;
if (NIL_P(fname)) {
fname = STR_NEW2("(ripper)");
OBJ_FREEZE(fname);
}
else {
StringValue(fname);
fname = rb_str_new_frozen(fname);
}
parser_initialize(parser);
ruby_sourcefile_string = fname;
ruby_sourcefile = RSTRING_PTR(fname);
ruby_sourceline = NIL_P(lineno) ? 0 : NUM2INT(lineno) - 1;
return Qnil;
}
struct ripper_args {
struct parser_params *parser;
int argc;
VALUE *argv;
};
static VALUE
ripper_parse0(VALUE parser_v)
{
struct parser_params *parser;
TypedData_Get_Struct(parser_v, struct parser_params, &parser_data_type, parser);
parser_prepare(parser);
ripper_yyparse((void*)parser);
return parser->result;
}
static VALUE
ripper_ensure(VALUE parser_v)
{
struct parser_params *parser;
TypedData_Get_Struct(parser_v, struct parser_params, &parser_data_type, parser);
parser->parsing_thread = Qnil;
return Qnil;
}
/*
* call-seq:
* ripper#parse
*
* Start parsing and returns the value of the root action.
*/
static VALUE
ripper_parse(VALUE self)
{
struct parser_params *parser;
TypedData_Get_Struct(self, struct parser_params, &parser_data_type, parser);
if (!ripper_initialized_p(parser)) {
rb_raise(rb_eArgError, "method called for uninitialized object");
}
if (!NIL_P(parser->parsing_thread)) {
if (parser->parsing_thread == rb_thread_current())
rb_raise(rb_eArgError, "Ripper#parse is not reentrant");
else
rb_raise(rb_eArgError, "Ripper#parse is not multithread-safe");
}
parser->parsing_thread = rb_thread_current();
rb_ensure(ripper_parse0, self, ripper_ensure, self);
return parser->result;
}
/*
* call-seq:
* ripper#column -> Integer
*
* Return column number of current parsing line.
* This number starts from 0.
*/
static VALUE
ripper_column(VALUE self)
{
struct parser_params *parser;
long col;
TypedData_Get_Struct(self, struct parser_params, &parser_data_type, parser);
if (!ripper_initialized_p(parser)) {
rb_raise(rb_eArgError, "method called for uninitialized object");
}
if (NIL_P(parser->parsing_thread)) return Qnil;
col = parser->tokp - lex_pbeg;
return LONG2NUM(col);
}
/*
* call-seq:
* ripper#filename -> String
*
* Return current parsing filename.
*/
static VALUE
ripper_filename(VALUE self)
{
struct parser_params *parser;
TypedData_Get_Struct(self, struct parser_params, &parser_data_type, parser);
if (!ripper_initialized_p(parser)) {
rb_raise(rb_eArgError, "method called for uninitialized object");
}
return ruby_sourcefile_string;
}
/*
* call-seq:
* ripper#lineno -> Integer
*
* Return line number of current parsing line.
* This number starts from 1.
*/
static VALUE
ripper_lineno(VALUE self)
{
struct parser_params *parser;
TypedData_Get_Struct(self, struct parser_params, &parser_data_type, parser);
if (!ripper_initialized_p(parser)) {
rb_raise(rb_eArgError, "method called for uninitialized object");
}
if (NIL_P(parser->parsing_thread)) return Qnil;
return INT2NUM(ruby_sourceline);
}
#ifdef RIPPER_DEBUG
/* :nodoc: */
static VALUE
ripper_assert_Qundef(VALUE self, VALUE obj, VALUE msg)
{
StringValue(msg);
if (obj == Qundef) {
rb_raise(rb_eArgError, "%"PRIsVALUE, msg);
}
return Qnil;
}
/* :nodoc: */
static VALUE
ripper_value(VALUE self, VALUE obj)
{
return ULONG2NUM(obj);
}
#endif
void
Init_ripper(void)
{
ripper_init_eventids1();
ripper_init_eventids2();
id_warn = rb_intern_const("warn");
id_warning = rb_intern_const("warning");
id_gets = rb_intern_const("gets");
InitVM(ripper);
}
void
InitVM_ripper(void)
{
VALUE Ripper;
Ripper = rb_define_class("Ripper", rb_cObject);
/* version of Ripper */
rb_define_const(Ripper, "Version", rb_usascii_str_new2(RIPPER_VERSION));
rb_define_alloc_func(Ripper, ripper_s_allocate);
rb_define_method(Ripper, "initialize", ripper_initialize, -1);
rb_define_method(Ripper, "parse", ripper_parse, 0);
rb_define_method(Ripper, "column", ripper_column, 0);
rb_define_method(Ripper, "filename", ripper_filename, 0);
rb_define_method(Ripper, "lineno", ripper_lineno, 0);
rb_define_method(Ripper, "end_seen?", rb_parser_end_seen_p, 0);
rb_define_method(Ripper, "encoding", rb_parser_encoding, 0);
rb_define_method(Ripper, "yydebug", rb_parser_get_yydebug, 0);
rb_define_method(Ripper, "yydebug=", rb_parser_set_yydebug, 1);
rb_define_method(Ripper, "error?", ripper_error_p, 0);
#ifdef RIPPER_DEBUG
rb_define_method(rb_mKernel, "assert_Qundef", ripper_assert_Qundef, 2);
rb_define_method(rb_mKernel, "rawVALUE", ripper_value, 1);
rb_define_method(rb_mKernel, "validate_object", ripper_validate_object, 1);
#endif
rb_define_singleton_method(Ripper, "dedent_string", parser_dedent_string, 2);
rb_define_private_method(Ripper, "dedent_string", parser_dedent_string, 2);
ripper_init_eventids1_table(Ripper);
ripper_init_eventids2_table(Ripper);
# if 0
/* Hack to let RDoc document SCRIPT_LINES__ */
/*
* When a Hash is assigned to +SCRIPT_LINES__+ the contents of files loaded
* after the assignment will be added as an Array of lines with the file
* name as the key.
*/
rb_define_global_const("SCRIPT_LINES__", Qnil);
#endif
}
#endif /* RIPPER */
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