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ruby--ruby/parse.y
matz 17957e0dfc * eval.c (rb_add_method): preserve safe level in the environment 
where a method is defined .

* eval.c (rb_call0): restore preserved safe level in the method
  execution.

* parse.y (lambda): need separate block variable stack
  manipulation and lpar_beg maintenance.  based on a patch found
  in [ruby-core:05551] from Mauricio Fernandez <mfp@acm.org>.

* parse.y (parser_yylex): adjust lpar_beg after tLAMBEG and
  kDO_LAMBDA. [ruby-core:05551]

* parse.y (yycompile): remove unreachable code.  [yarv-dev:570]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@8994 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2005-08-16 15:24:15 +00:00

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/**********************************************************************
parse.y -
$Author$
$Date$
created at: Fri May 28 18:02:42 JST 1993
Copyright (C) 1993-2004 Yukihiro Matsumoto
**********************************************************************/
%{
#define YYDEBUG 1
#include "ruby.h"
#include "env.h"
#include "intern.h"
#include "node.h"
#include "st.h"
#include <stdio.h>
#include <errno.h>
#include <ctype.h>
#define ID_SCOPE_SHIFT 3
#define ID_SCOPE_MASK 0x07
#define ID_LOCAL 0x01
#define ID_INSTANCE 0x02
#define ID_GLOBAL 0x03
#define ID_ATTRSET 0x04
#define ID_CONST 0x05
#define ID_CLASS 0x06
#define ID_JUNK 0x07
#define ID_INTERNAL ID_JUNK
#define is_notop_id(id) ((id)>tLAST_TOKEN)
#define is_local_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_LOCAL)
#define is_global_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_GLOBAL)
#define is_instance_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_INSTANCE)
#define is_attrset_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_ATTRSET)
#define is_const_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_CONST)
#define is_class_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_CLASS)
#define is_junk_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_JUNK)
#define is_asgn_or_id(id) ((is_notop_id(id)) && \
(((id)&ID_SCOPE_MASK) == ID_GLOBAL || \
((id)&ID_SCOPE_MASK) == ID_INSTANCE || \
((id)&ID_SCOPE_MASK) == ID_CLASS))
#ifndef RIPPER
char *ruby_sourcefile; /* current source file */
int ruby_sourceline; /* current line no. */
#endif
enum lex_state_e {
EXPR_BEG, /* ignore newline, +/- is a sign. */
EXPR_END, /* newline significant, +/- is a operator. */
EXPR_END2, /* newline significant, +/- is a operator. */
EXPR_ARG, /* newline significant, +/- is a operator. */
EXPR_CMDARG, /* newline significant, +/- is a operator. */
EXPR_ENDARG, /* newline significant, +/- is a operator. */
EXPR_MID, /* newline significant, +/- is a operator. */
EXPR_FNAME, /* ignore newline, no reserved words. */
EXPR_DOT, /* right after `.' or `::', no reserved words. */
EXPR_CLASS, /* immediate after `class', no here document. */
EXPR_VALUE, /* alike EXPR_BEG but label is disallowed. */
};
# ifdef HAVE_LONG_LONG
typedef unsigned LONG_LONG stack_type;
# else
typedef unsigned long stack_type;
# endif
# define BITSTACK_PUSH(stack, n) (stack = (stack<<1)|((n)&1))
# define BITSTACK_POP(stack) (stack = stack >> 1)
# define BITSTACK_LEXPOP(stack) (stack = (stack >> 1) | (stack & 1))
# define BITSTACK_SET_P(stack) (stack&1)
#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 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)
/* must sync with real YYSTYPE */
union tmpyystype {
VALUE val;
NODE *node;
unsigned long id;
int num;
struct RVarmap *vars;
};
struct local_vars {
ID *tbl;
int nofree;
int cnt;
int dlev;
int dname_size;
ID *dnames;
struct RVarmap* dyna_vars;
struct local_vars *prev;
};
/*
Structure of Lexer Buffer:
lex_pbeg tokp lex_p lex_pend
| | | |
|-----------+--------------+------------|
|<------------>|
token
*/
struct parser_params {
union tmpyystype *parser_yylval; /* YYSTYPE not defined yet */
VALUE eofp;
NODE *parser_lex_strterm;
enum lex_state_e parser_lex_state;
stack_type parser_cond_stack;
stack_type parser_cmdarg_stack;
int parser_class_nest;
int parser_paren_nest;
int parser_lpar_beg;
int parser_in_single;
int parser_in_def;
int parser_compile_for_eval;
VALUE parser_cur_mid;
int parser_in_defined;
char *parser_tokenbuf;
int parser_tokidx;
int parser_toksiz;
VALUE parser_lex_input;
VALUE parser_lex_lastline;
char *parser_lex_pbeg;
char *parser_lex_p;
char *parser_lex_pend;
int parser_heredoc_end;
int parser_command_start;
int parser_lex_gets_ptr;
VALUE (*parser_lex_gets) _((struct parser_params*,VALUE));
struct local_vars *parser_lvtbl;
int parser_ruby__end__seen;
#ifndef RIPPER
/* Ruby core only */
NODE *parser_eval_tree_begin;
NODE *parser_eval_tree;
VALUE debug_lines;
#else
/* Ripper only */
int parser_ruby_sourceline;
VALUE parser_ruby_sourcefile;
char *tokp;
VALUE delayed;
int delayed_line;
int delayed_col;
VALUE value;
VALUE result;
VALUE parsing_thread;
int toplevel_p;
#endif
int line_count;
int has_shebang;
};
static int parser_yyerror _((struct parser_params*, const char*));
#define yyerror(msg) parser_yyerror(parser, msg)
#define YYPARSE_PARAM parser_v
#define YYLEX_PARAM parser_v
#define parser ((struct parser_params*)parser_v)
#define ruby_eval_tree (parser->parser_eval_tree)
#define ruby_eval_tree_begin (parser->parser_eval_tree_begin)
#define lex_strterm (parser->parser_lex_strterm)
#define lex_state (parser->parser_lex_state)
#define cond_stack (parser->parser_cond_stack)
#define cmdarg_stack (parser->parser_cmdarg_stack)
#define class_nest (parser->parser_class_nest)
#define paren_nest (parser->parser_paren_nest)
#define lpar_beg (parser->parser_lpar_beg)
#define in_single (parser->parser_in_single)
#define in_def (parser->parser_in_def)
#define compile_for_eval (parser->parser_compile_for_eval)
#define cur_mid (parser->parser_cur_mid)
#define in_defined (parser->parser_in_defined)
#define tokenbuf (parser->parser_tokenbuf)
#define tokidx (parser->parser_tokidx)
#define toksiz (parser->parser_toksiz)
#define lex_input (parser->parser_lex_input)
#define lex_lastline (parser->parser_lex_lastline)
#define lex_pbeg (parser->parser_lex_pbeg)
#define lex_p (parser->parser_lex_p)
#define lex_pend (parser->parser_lex_pend)
#define heredoc_end (parser->parser_heredoc_end)
#define command_start (parser->parser_command_start)
#define lex_gets_ptr (parser->parser_lex_gets_ptr)
#define lex_gets (parser->parser_lex_gets)
#define lvtbl (parser->parser_lvtbl)
#define ruby__end__seen (parser->parser_ruby__end__seen)
#ifdef RIPPER
#define ruby_sourceline (parser->parser_ruby_sourceline)
#define ruby_sourcefile (parser->parser_ruby_sourcefile)
#else
#define ruby_debug_lines (parser->debug_lines)
#endif
static int yylex _((void*, void*));
#ifndef RIPPER
#define yyparse parser_yyparse
#define yydebug ruby_yydebug
static NODE *cond_gen _((struct parser_params*,NODE*));
#define cond(node) cond_gen(parser, node)
static NODE *logop_gen _((struct parser_params*,enum node_type,NODE*,NODE*));
#define logop(type,node1,node2) logop_gen(parser, type, node1, node2)
static int cond_negative _((NODE**));
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*));
#define value_expr(node) value_expr_gen(parser, (node) = remove_begin(node))
#define void_expr(node) void_expr_gen(parser, (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 _((NODE**));
static void block_dup_check _((NODE*));
static NODE *block_append _((NODE*,NODE*));
static NODE *list_append _((NODE*,NODE*));
static NODE *list_concat _((NODE*,NODE*));
static NODE *arg_concat _((NODE*,NODE*));
static NODE *literal_concat _((NODE*,NODE*));
static NODE *new_evstr _((NODE*));
static NODE *evstr2dstr _((NODE*));
static NODE *call_op_gen _((struct parser_params*,NODE*,ID,int,NODE*));
#define call_op(recv,id,narg,arg1) call_op_gen(parser, recv,id,narg,arg1)
static NODE *new_args_gen _((struct parser_params*,VALUE,NODE*,NODE*,NODE*));
#define new_args(f,o,r,b) new_args_gen(parser, f,o,r,b)
static void shadowing_lvar_gen _((struct parser_params*,ID));
#define shadowing_lvar(name) shadowing_lvar_gen(parser, name)
static NODE *negate_lit _((NODE*));
static NODE *ret_args _((NODE*));
static NODE *arg_blk_pass _((NODE*,NODE*));
static NODE *new_call _((NODE*,ID,NODE*));
static NODE *new_fcall_gen _((struct parser_params*,ID,NODE*));
#define new_fcall(id,args) new_fcall_gen(parser, id, args)
static NODE *new_super _((NODE*));
static NODE *new_yield _((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 *new_bv_gen _((struct parser_params*,ID,NODE*));
#define new_bv(id,node) new_bv_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));
#define attrset(node,id) attrset_gen(parser, node, id)
static void rb_backref_error _((NODE*));
static NODE *node_assign_gen _((struct parser_params*,NODE*,NODE*));
#define node_assign(node1, node2) node_assign_gen(parser, node1, node2)
static NODE *match_op_gen _((struct parser_params*,NODE*,NODE*));
#define match_op(node1,node2) match_op_gen(parser, node1, node2)
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 int local_append_gen _((struct parser_params*, ID));
#define local_append(id) local_append_gen(parser, id)
static int local_cnt_gen _((struct parser_params*, ID));
#define local_cnt(id) local_cnt_gen(parser, id)
static int local_id_gen _((struct parser_params*, ID));
#define local_id(id) local_id_gen(parser, id)
static ID *local_tbl_gen _((struct parser_params*));
#define local_tbl() local_tbl_gen(parser)
static ID internal_id _((void));
static struct RVarmap *dyna_push_gen _((struct parser_params*));
#define dyna_push() dyna_push_gen(parser)
static void dyna_pop_gen _((struct parser_params*, struct RVarmap*));
#define dyna_pop(vars) dyna_pop_gen(parser, vars)
static int dyna_in_block_gen _((struct parser_params*));
#define dyna_in_block() dyna_in_block_gen(parser)
static NODE *dyna_init_gen _((struct parser_params*, NODE*, struct RVarmap *));
#define dyna_init(node, pre) dyna_init_gen(parser, node, pre)
static void dyna_var_gen _((struct parser_params*,ID));
#define dyna_var(id) dyna_var_gen(parser, id)
static void dyna_check_gen _((struct parser_params*,ID));
#define dyna_check(id) dyna_check_gen(parser, id)
static void top_local_init_gen _((struct parser_params*));
#define top_local_init() top_local_init_gen(parser)
static void top_local_setup_gen _((struct parser_params*));
#define top_local_setup() top_local_setup_gen(parser)
#else
#define remove_begin(node) (node)
#endif /* !RIPPER */
static int lvar_defined_gen _((struct parser_params*, ID));
#define lvar_defined(id) lvar_defined_gen(parser, id)
#define RE_OPTION_ONCE 0x80
#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
/****** Ripper *******/
#ifdef RIPPER
#define RIPPER_VERSION "0.1.0"
#include "eventids1.c"
#include "eventids2.c"
static ID ripper_id_gets;
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));
#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 yyparse ripper_yyparse
#define yydebug ripper_yydebug
static VALUE ripper_intern _((const char*));
static VALUE ripper_id2sym _((ID));
#define arg_new() dispatch0(arglist_new)
#define arg_add(l,a) dispatch2(arglist_add, l, a)
#define arg_prepend(l,a) dispatch2(arglist_prepend, l, a)
#define arg_add_star(l,a) dispatch2(arglist_add_star, l, a)
#define arg_add_block(l,b) dispatch2(arglist_add_block, l, b)
#define arg_add_optblock(l,b) ((b)==Qundef? l : dispatch2(arglist_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_arglist, 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 blockvar_new(p) dispatch1(blockvar_new, p)
#define blockvar_add_star(l,a) dispatch2(blockvar_add_star, l, a)
#define blockvar_add_block(l,a) dispatch2(blockvar_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 escape_Qundef(x) ((x)==Qundef ? Qnil : (x))
#define FIXME 0
#endif /* RIPPER */
#ifndef RIPPER
# define ifndef_ripper(x) x
#else
# define ifndef_ripper(x)
#endif
#ifndef RIPPER
# define rb_warn0(fmt) rb_warn(fmt)
# define rb_warnI(fmt,a) rb_warn(fmt,a)
# define rb_warnS(fmt,a) rb_warn(fmt,a)
# define rb_warning0(fmt) rb_warning(fmt)
# define rb_warningS(fmt,a) rb_warning(fmt,a)
#else
# define rb_warn0(fmt) ripper_warn0(parser, fmt)
# define rb_warnI(fmt,a) ripper_warnI(parser, fmt, a)
# define rb_warnS(fmt,a) ripper_warnS(parser, fmt, a)
# define rb_warning0(fmt) ripper_warning0(parser, fmt)
# define rb_warningS(fmt,a) ripper_warningS(parser, fmt, a)
static void ripper_warn0 _((struct parser_params*, const char*));
static void ripper_warnI _((struct parser_params*, const char*, int));
static void ripper_warnS _((struct parser_params*, const char*, const char*));
static void ripper_warning0 _((struct parser_params*, const char*));
static void ripper_warningS _((struct parser_params*, const char*, const char*));
#endif
#ifdef RIPPER
static void ripper_compile_error _((struct parser_params*, const char *fmt, ...));
# define rb_compile_error ripper_compile_error
# define compile_error ripper_compile_error
# define PARSER_ARG parser,
#else
# define compile_error rb_compile_error
# define PARSER_ARG
#endif
#define NEW_BLOCK_PARAM(b, v) NEW_NODE(NODE_BLOCK_PASS, 0, b, v)
/* 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
%}
%pure_parser
%union {
VALUE val;
NODE *node;
ID id;
int num;
struct RVarmap *vars;
}
/*%%%*/
%token
/*%
%token <val>
%*/
kCLASS
kMODULE
kDEF
kUNDEF
kBEGIN
kRESCUE
kENSURE
kEND
kIF
kUNLESS
kTHEN
kELSIF
kELSE
kCASE
kWHEN
kWHILE
kUNTIL
kFOR
kBREAK
kNEXT
kREDO
kRETRY
kIN
kDO
kDO_COND
kDO_BLOCK
kDO_LAMBDA
kRETURN
kYIELD
kSUPER
kSELF
kNIL
kTRUE
kFALSE
kAND
kOR
kNOT
kIF_MOD
kUNLESS_MOD
kWHILE_MOD
kUNTIL_MOD
kRESCUE_MOD
kALIAS
kDEFINED
klBEGIN
klEND
k__LINE__
k__FILE__
%token <id> tIDENTIFIER tFID tGVAR tIVAR tCONSTANT tCVAR tLABEL
%token <node> tINTEGER tFLOAT tSTRING_CONTENT
%token <node> tNTH_REF tBACK_REF
%token <num> tREGEXP_END
%type <node> singleton strings string string1 xstring regexp
%type <node> string_contents xstring_contents string_content
%type <node> words qwords word_list qword_list word
%type <node> literal numeric dsym cpath
%type <node> bodystmt compstmt stmts stmt expr arg primary command command_call method_call
%type <node> expr_value arg_value primary_value
%type <node> if_tail opt_else case_body cases opt_rescue exc_list exc_var opt_ensure
%type <node> args when_args call_args call_args2 open_args paren_args opt_paren_args
%type <node> command_args aref_args opt_block_arg block_arg var_ref var_lhs
%type <node> mrhs superclass block_call block_command
%type <node> f_arglist f_args f_rest_arg f_optarg f_opt f_block_arg opt_f_block_arg
%type <node> assoc_list assocs assoc undef_list backref string_dvar
%type <node> for_var block_param opt_block_param block_param_def block_param0
%type <node> opt_bv_decl bv_decls bv_decl lambda f_larglist lambda_body
%type <node> brace_block cmd_brace_block do_block lhs none fitem
%type <node> mlhs mlhs_head mlhs_basic mlhs_entry mlhs_item mlhs_node
%type <id> fsym variable sym symbol operation operation2 operation3
%type <id> cname fname op f_norm_arg
%type <val> f_arg
/*%%%*/
/*%
%type <val> program reswords then do dot_or_colon
%*/
%token tUPLUS /* unary+ */
%token tUMINUS /* unary- */
%token tPOW /* ** */
%token tCMP /* <=> */
%token tEQ /* == */
%token tEQQ /* === */
%token tNEQ /* != */
%token tGEQ /* >= */
%token tLEQ /* <= */
%token tANDOP tOROP /* && and || */
%token tMATCH tNMATCH /* =~ and !~ */
%token tDOT2 tDOT3 /* .. and ... */
%token tAREF tASET /* [] and []= */
%token tLSHFT tRSHFT /* << and >> */
%token tCOLON2 /* :: */
%token tCOLON3 /* :: at EXPR_BEG */
%token <id> tOP_ASGN /* +=, -= etc. */
%token tASSOC /* => */
%token tLPAREN /* ( */
%token tLPAREN_ARG /* ( */
%token tRPAREN /* ) */
%token tLBRACK /* [ */
%token tLBRACE /* { */
%token tLBRACE_ARG /* { */
%token tSTAR /* * */
%token tAMPER /* & */
%token tLAMBDA /* -> */
%token tLAMBDA_ARG /* -> */
%token tSYMBEG tSTRING_BEG tXSTRING_BEG tREGEXP_BEG tWORDS_BEG tQWORDS_BEG
%token tSTRING_DBEG tSTRING_DVAR tSTRING_END tLAMBEG
/*
* precedence table
*/
%nonassoc tLOWEST
%nonassoc tLBRACE_ARG
%nonassoc kIF_MOD kUNLESS_MOD kWHILE_MOD kUNTIL_MOD
%left kOR kAND
%right kNOT
%nonassoc kDEFINED
%right '=' tOP_ASGN
%left kRESCUE_MOD
%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 : {
/*%%%*/
lex_state = EXPR_BEG;
top_local_init();
if (ruby_class == rb_cObject) class_nest = 0;
else class_nest = 1;
/*%
lex_state = EXPR_BEG;
class_nest = !parser->toplevel_p;
$$ = Qnil;
%*/
}
compstmt
{
/*%%%*/
if ($2 && !compile_for_eval) {
/* last expression should not be void */
if (nd_type($2) != NODE_BLOCK) void_expr($2);
else {
NODE *node = $2;
while (node->nd_next) {
node = node->nd_next;
}
void_expr(node->nd_head);
}
}
ruby_eval_tree = block_append(ruby_eval_tree, $2);
top_local_setup();
class_nest = 0;
/*%
class_nest = 0;
$$ = $2;
parser->result = dispatch1(program, $$);
%*/
}
;
bodystmt : compstmt
opt_rescue
opt_else
opt_ensure
{
/*%%%*/
$$ = $1;
if ($2) {
$$ = NEW_RESCUE($1, $2, $3);
}
else if ($3) {
rb_warn("else without rescue is useless");
$$ = 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;
/*%
$$ = $1;
%*/
}
;
stmts : none
/*%c%*/
/*%c
{
$$ = dispatch2(stmts_add, dispatch0(stmts_new),
dispatch0(void_stmt));
}
%*/
| stmt
{
/*%%%*/
$$ = newline_node(remove_begin($1));
/*%
$$ = dispatch2(stmts_add, dispatch0(stmts_new), $1);
%*/
}
| stmts terms stmt
{
/*%%%*/
$$ = block_append($1, newline_node(remove_begin($3)));
/*%
$$ = dispatch2(stmts_add, $1, $3);
%*/
}
| error stmt
{
$$ = remove_begin($2);
}
;
stmt : kALIAS fitem {lex_state = EXPR_FNAME;} fitem
{
/*%%%*/
$$ = NEW_ALIAS($2, $4);
/*%
$$ = dispatch2(alias, $2, $4);
%*/
}
| kALIAS tGVAR tGVAR
{
/*%%%*/
$$ = NEW_VALIAS($2, $3);
/*%
$$ = dispatch2(var_alias, $2, $3);
%*/
}
| kALIAS tGVAR tBACK_REF
{
/*%%%*/
char buf[3];
sprintf(buf, "$%c", (char)$3->nd_nth);
$$ = NEW_VALIAS($2, rb_intern(buf));
/*%
$$ = dispatch2(var_alias, $2, $3);
%*/
}
| kALIAS tGVAR tNTH_REF
{
/*%%%*/
yyerror("can't make alias for the number variables");
$$ = 0;
/*%
$$ = dispatch2(var_alias, $2, $3);
$$ = dispatch1(alias_error, $$);
%*/
}
| kUNDEF undef_list
{
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(undef, $2);
%*/
}
| stmt kIF_MOD expr_value
{
/*%%%*/
$$ = NEW_IF(cond($3), $1, 0);
fixpos($$, $3);
if (cond_negative(&$$->nd_cond)) {
$$->nd_else = $$->nd_body;
$$->nd_body = 0;
}
/*%
$$ = dispatch2(if_mod, $3, $1);
%*/
}
| stmt kUNLESS_MOD expr_value
{
/*%%%*/
$$ = NEW_UNLESS(cond($3), $1, 0);
fixpos($$, $3);
if (cond_negative(&$$->nd_cond)) {
$$->nd_body = $$->nd_else;
$$->nd_else = 0;
}
/*%
$$ = dispatch2(unless_mod, $3, $1);
%*/
}
| stmt kWHILE_MOD expr_value
{
/*%%%*/
if ($1 && nd_type($1) == NODE_BEGIN) {
$$ = NEW_WHILE(cond($3), $1->nd_body, 0);
}
else {
$$ = NEW_WHILE(cond($3), $1, 1);
}
if (cond_negative(&$$->nd_cond)) {
nd_set_type($$, NODE_UNTIL);
}
/*%
$$ = dispatch2(while_mod, $3, $1);
%*/
}
| stmt kUNTIL_MOD expr_value
{
/*%%%*/
if ($1 && nd_type($1) == NODE_BEGIN) {
$$ = NEW_UNTIL(cond($3), $1->nd_body, 0);
}
else {
$$ = NEW_UNTIL(cond($3), $1, 1);
}
if (cond_negative(&$$->nd_cond)) {
nd_set_type($$, NODE_WHILE);
}
/*%
$$ = dispatch2(until_mod, $3, $1);
%*/
}
| stmt kRESCUE_MOD stmt
{
/*%%%*/
$$ = NEW_RESCUE($1, NEW_RESBODY(0,$3,0), 0);
/*%
$$ = dispatch2(rescue_mod, $3, $1);
%*/
}
| klBEGIN
{
/*%%%*/
if (in_def || in_single) {
yyerror("BEGIN in method");
}
local_push(0);
/*%
if (in_def || in_single) {
yyerror("BEGIN in method");
}
%*/
}
'{' compstmt '}'
{
/*%%%*/
ruby_eval_tree_begin = block_append(ruby_eval_tree_begin,
NEW_PREEXE($4));
local_pop();
$$ = 0;
/*%
$$ = dispatch1(BEGIN, $4);
%*/
}
| klEND '{' compstmt '}'
{
/*%%%*/
if (in_def || in_single) {
rb_warn("END in method; use at_exit");
}
$$ = NEW_ITER(0, NEW_POSTEXE(), $3);
/*%
if (in_def || in_single) {
rb_warn0("END in method; use at_exit");
}
$$ = dispatch1(END, $3);
%*/
}
| lhs '=' command_call
{
/*%%%*/
$$ = node_assign($1, $3);
/*%
$$ = dispatch2(assign, $1, $3);
%*/
}
| mlhs '=' command_call
{
/*%%%*/
value_expr($3);
$1->nd_value = ($1->nd_head) ? NEW_TO_ARY($3) : NEW_ARRAY($3);
$$ = $1;
/*%
$$ = dispatch2(massign, $1, $3);
%*/
}
| var_lhs tOP_ASGN command_call
{
/*%%%*/
value_expr($3);
if ($1) {
ID vid = $1->nd_vid;
if ($2 == tOROP) {
$1->nd_value = $3;
$$ = NEW_OP_ASGN_OR(gettable(vid), $1);
if (is_asgn_or_id(vid)) {
$$->nd_aid = vid;
}
}
else if ($2 == tANDOP) {
$1->nd_value = $3;
$$ = NEW_OP_ASGN_AND(gettable(vid), $1);
}
else {
$$ = $1;
$$->nd_value = call_op(gettable(vid),$2,1,$3);
}
}
else {
$$ = 0;
}
/*%
$$ = dispatch3(opassign, $1, $2, $3);
%*/
}
| primary_value '[' aref_args ']' tOP_ASGN command_call
{
/*%%%*/
NODE *args;
value_expr($6);
args = NEW_LIST($6);
if ($3 && nd_type($3) != NODE_ARRAY)
$3 = NEW_LIST($3);
$3 = list_append($3, NEW_NIL());
list_concat(args, $3);
if ($5 == tOROP) {
$5 = 0;
}
else if ($5 == tANDOP) {
$5 = 1;
}
$$ = NEW_OP_ASGN1($1, $5, args);
fixpos($$, $1);
/*%
$$ = dispatch2(aref_field, $1, $3);
$$ = dispatch3(opassign, $$, $5, $6);
%*/
}
| primary_value '.' tIDENTIFIER tOP_ASGN command_call
{
/*%%%*/
value_expr($5);
if ($4 == tOROP) {
$4 = 0;
}
else if ($4 == tANDOP) {
$4 = 1;
}
$$ = NEW_OP_ASGN2($1, $3, $4, $5);
fixpos($$, $1);
/*%
$$ = dispatch3(field, $1, ripper_id2sym('.'), $3);
$$ = dispatch3(opassign, $$, $4, $5);
%*/
}
| primary_value '.' tCONSTANT tOP_ASGN command_call
{
/*%%%*/
value_expr($5);
if ($4 == tOROP) {
$4 = 0;
}
else if ($4 == tANDOP) {
$4 = 1;
}
$$ = NEW_OP_ASGN2($1, $3, $4, $5);
fixpos($$, $1);
/*%
$$ = dispatch3(field, $1, ripper_id2sym('.'), $3);
$$ = dispatch3(opassign, $$, $4, $5);
%*/
}
| primary_value tCOLON2 tIDENTIFIER tOP_ASGN command_call
{
/*%%%*/
value_expr($5);
if ($4 == tOROP) {
$4 = 0;
}
else if ($4 == tANDOP) {
$4 = 1;
}
$$ = NEW_OP_ASGN2($1, $3, $4, $5);
fixpos($$, $1);
/*%
$$ = dispatch3(field, $1, ripper_intern("::"), $3);
$$ = dispatch3(opassign, $$, $4, $5);
%*/
}
| backref tOP_ASGN command_call
{
/*%%%*/
rb_backref_error($1);
$$ = 0;
/*%
$$ = dispatch2(assign, dispatch1(var_field, $1), $3);
$$ = dispatch1(assign_error, $$);
%*/
}
| lhs '=' mrhs
{
/*%%%*/
$$ = node_assign($1, NEW_SVALUE($3));
/*%
$$ = dispatch2(assign, $1, $3);
%*/
}
| mlhs '=' arg_value
{
/*%%%*/
$1->nd_value = ($1->nd_head) ? NEW_TO_ARY($3) : NEW_ARRAY($3);
$$ = $1;
/*%
dispatch2(massign, $1, $3);
%*/
}
| mlhs '=' mrhs
{
/*%%%*/
$1->nd_value = $3;
$$ = $1;
/*%
$$ = dispatch2(massign, $1, $3);
%*/
}
| expr
;
expr : command_call
| expr kAND expr
{
/*%%%*/
$$ = logop(NODE_AND, $1, $3);
/*%
$$ = dispatch3(binary, $1, ripper_intern("and"), $3);
%*/
}
| expr kOR expr
{
/*%%%*/
$$ = logop(NODE_OR, $1, $3);
/*%
$$ = dispatch3(binary, $1, ripper_intern("or"), $3);
%*/
}
| kNOT expr
{
/*%%%*/
$$ = NEW_NOT(cond($2));
/*%
$$ = dispatch2(unary, ripper_intern("not"), $2);
%*/
}
| '!' command_call
{
/*%%%*/
$$ = NEW_NOT(cond($2));
/*%
$$ = dispatch2(unary, ID2SYM('!'), $2);
%*/
}
| arg
;
expr_value : expr
{
/*%%%*/
value_expr($$);
$$ = $1;
/*%
$$ = $1;
%*/
}
;
command_call : command
| block_command
| kRETURN call_args
{
/*%%%*/
$$ = NEW_RETURN(ret_args($2));
/*%
$$ = dispatch1(return, $2);
%*/
}
| kBREAK call_args
{
/*%%%*/
$$ = NEW_BREAK(ret_args($2));
/*%
$$ = dispatch1(break, $2);
%*/
}
| kNEXT call_args
{
/*%%%*/
$$ = NEW_NEXT(ret_args($2));
/*%
$$ = dispatch1(next, $2);
%*/
}
;
block_command : block_call
| block_call '.' operation2 command_args
{
/*%%%*/
$$ = new_call($1, $3, $4);
/*%
$$ = dispatch3(call, $1, ripper_id2sym('.'), $3);
$$ = method_arg($$, $4);
%*/
}
| block_call tCOLON2 operation2 command_args
{
/*%%%*/
$$ = new_call($1, $3, $4);
/*%
$$ = dispatch3(call, $1, ripper_intern("::"), $3);
$$ = method_arg($$, $4);
%*/
}
;
cmd_brace_block : tLBRACE_ARG
{
/*%%%*/
$<vars>$ = dyna_push();
$<num>1 = ruby_sourceline;
/*%
%*/
}
opt_block_param {$<vars>$ = ruby_dyna_vars;}
compstmt
'}'
{
/*%%%*/
$3->nd_body = block_append($3->nd_body,
dyna_init($5, $<vars>4));
$$ = $3;
nd_set_line($$, $<num>1);
dyna_pop($<vars>2);
/*%
$$ = dispatch2(brace_block, escape_Qundef($3), $5);
%*/
}
;
command : operation command_args %prec tLOWEST
{
/*%%%*/
$$ = new_fcall($1, $2);
fixpos($$, $2);
/*%
$$ = dispatch2(command, $1, $2);
%*/
}
| operation command_args cmd_brace_block
{
/*%%%*/
$$ = new_fcall($1, $2);
if ($3) {
block_dup_check($$);
$3->nd_iter = $$;
$$ = $3;
}
fixpos($$, $2);
/*%
$$ = dispatch2(command, $1, $2);
$$ = dispatch2(iter_block, $$, $3);
%*/
}
| primary_value '.' operation2 command_args %prec tLOWEST
{
/*%%%*/
$$ = new_call($1, $3, $4);
fixpos($$, $1);
/*%
$$ = dispatch4(command_call, $1, ripper_id2sym('.'), $3, $4);
%*/
}
| primary_value '.' operation2 command_args cmd_brace_block
{
/*%%%*/
$$ = new_call($1, $3, $4);
if ($5) {
block_dup_check($$);
$5->nd_iter = $$;
$$ = $5;
}
fixpos($$, $1);
/*%
$$ = dispatch4(command_call, $1, ripper_id2sym('.'), $3, $4);
$$ = dispatch2(iter_block, $$, $5);
%*/
}
| primary_value tCOLON2 operation2 command_args %prec tLOWEST
{
/*%%%*/
$$ = new_call($1, $3, $4);
fixpos($$, $1);
/*%
$$ = dispatch4(command_call, $1, ripper_intern("::"), $3, $4);
%*/
}
| primary_value tCOLON2 operation2 command_args cmd_brace_block
{
/*%%%*/
$$ = new_call($1, $3, $4);
if ($5) {
block_dup_check($$);
$5->nd_iter = $$;
$$ = $5;
}
fixpos($$, $1);
/*%
$$ = dispatch4(command_call, $1, ripper_intern("::"), $3, $4);
$$ = dispatch2(iter_block, $$, $5);
%*/
}
| kSUPER command_args
{
/*%%%*/
$$ = new_super($2);
fixpos($$, $2);
/*%
$$ = dispatch1(super, $2);
%*/
}
| kYIELD command_args
{
/*%%%*/
$$ = new_yield($2);
fixpos($$, $2);
/*%
$$ = dispatch1(yield, $2);
%*/
}
;
mlhs : mlhs_basic
| tLPAREN mlhs_entry rparen
{
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(mlhs_paren, $2);
%*/
}
;
mlhs_entry : mlhs_basic
| tLPAREN mlhs_entry 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
{
/*%%%*/
$$ = NEW_MASGN($1, -1);
/*%
$$ = mlhs_add_star($1, Qnil);
%*/
}
| tSTAR mlhs_node
{
/*%%%*/
$$ = NEW_MASGN(0, $2);
/*%
$$ = mlhs_add_star(mlhs_new(), $2);
%*/
}
| tSTAR
{
/*%%%*/
$$ = NEW_MASGN(0, -1);
/*%
$$ = mlhs_add_star(mlhs_new(), Qnil);
%*/
}
;
mlhs_item : mlhs_node
| tLPAREN mlhs_entry 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_node : variable
{
/*%%%*/
$$ = assignable($1, 0);
/*%
$$ = $1;
%*/
}
| primary_value '[' aref_args ']'
{
/*%%%*/
$$ = aryset($1, $3);
/*%
$$ = dispatch2(aref_field, $1, $3);
%*/
}
| primary_value '.' tIDENTIFIER
{
/*%%%*/
$$ = attrset($1, $3);
/*%
$$ = dispatch3(field, $1, ripper_id2sym('.'), $3);
%*/
}
| primary_value tCOLON2 tIDENTIFIER
{
/*%%%*/
$$ = attrset($1, $3);
/*%
$$ = dispatch2(constpath_field, $1, $3);
%*/
}
| primary_value '.' tCONSTANT
{
/*%%%*/
$$ = attrset($1, $3);
/*%
$$ = dispatch3(field, $1, ripper_id2sym('.'), $3);
%*/
}
| primary_value tCOLON2 tCONSTANT
{
/*%%%*/
if (in_def || in_single)
yyerror("dynamic constant assignment");
$$ = NEW_CDECL(0, 0, NEW_COLON2($1, $3));
/*%
if (in_def || in_single)
yyerror("dynamic constant assignment");
$$ = dispatch2(constpath_field, $1, $3);
%*/
}
| tCOLON3 tCONSTANT
{
/*%%%*/
if (in_def || in_single)
yyerror("dynamic constant assignment");
$$ = NEW_CDECL(0, 0, NEW_COLON3($2));
/*%
$$ = dispatch1(topconst_field, $2);
%*/
}
| backref
{
/*%%%*/
rb_backref_error($1);
$$ = 0;
/*%
$$ = dispatch1(var_field, $1);
$$ = dispatch1(assign_error, $$);
%*/
}
;
lhs : variable
{
/*%%%*/
$$ = assignable($1, 0);
/*%
$$ = dispatch1(var_field, $1);
%*/
}
| primary_value '[' aref_args ']'
{
/*%%%*/
$$ = aryset($1, $3);
/*%
$$ = dispatch2(aref_field, $1, $3);
%*/
}
| primary_value '.' tIDENTIFIER
{
/*%%%*/
$$ = attrset($1, $3);
/*%
$$ = dispatch3(field, $1, ripper_id2sym('.'), $3);
%*/
}
| primary_value tCOLON2 tIDENTIFIER
{
/*%%%*/
$$ = attrset($1, $3);
/*%
$$ = dispatch3(field, $1, ripper_intern("::"), $3);
%*/
}
| primary_value '.' tCONSTANT
{
/*%%%*/
$$ = attrset($1, $3);
/*%
$$ = dispatch3(field, $1, ripper_id2sym('.'), $3);
%*/
}
| primary_value tCOLON2 tCONSTANT
{
/*%%%*/
if (in_def || in_single)
yyerror("dynamic constant assignment");
$$ = NEW_CDECL(0, 0, NEW_COLON2($1, $3));
/*%
$$ = dispatch2(constpath_field, $1, $3);
if (in_def || in_single) {
$$ = dispatch1(assign_error, $$);
}
%*/
}
| tCOLON3 tCONSTANT
{
/*%%%*/
if (in_def || in_single)
yyerror("dynamic constant assignment");
$$ = NEW_CDECL(0, 0, NEW_COLON3($2));
/*%
$$ = dispatch1(topconst_field, $2);
if (in_def || in_single) {
$$ = dispatch1(assign_error, $$);
}
%*/
}
| backref
{
/*%%%*/
rb_backref_error($1);
$$ = 0;
/*%
$$ = dispatch1(assign_error, $1);
%*/
}
;
cname : tIDENTIFIER
{
/*%%%*/
yyerror("class/module name must be CONSTANT");
/*%
$$ = dispatch1(class_name_error, $1);
%*/
}
| tCONSTANT
;
cpath : tCOLON3 cname
{
/*%%%*/
$$ = NEW_COLON3($2);
/*%
$$ = dispatch1(topconst_ref, $2);
%*/
}
| cname
{
/*%%%*/
$$ = NEW_COLON2(0, $$);
/*%
$$ = dispatch1(const_ref, $1);
%*/
}
| primary_value tCOLON2 cname
{
/*%%%*/
$$ = NEW_COLON2($1, $3);
/*%
$$ = dispatch2(constpath_ref, $1, $3);
%*/
}
;
fname : tIDENTIFIER
| tCONSTANT
| tFID
| op
{
/*%%%*/
lex_state = EXPR_END;
$$ = $1;
/*%
lex_state = EXPR_END;
$$ = $1;
%*/
}
| reswords
{
/*%%%*/
lex_state = EXPR_END;
$$ = $<id>1;
/*%
lex_state = EXPR_END;
$$ = $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 ',' {lex_state = EXPR_FNAME;} 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); }
| '>' { ifndef_ripper($$ = '>'); }
| tGEQ { ifndef_ripper($$ = tGEQ); }
| '<' { ifndef_ripper($$ = '<'); }
| tLEQ { ifndef_ripper($$ = tLEQ); }
| tLSHFT { ifndef_ripper($$ = tLSHFT); }
| tRSHFT { ifndef_ripper($$ = tRSHFT); }
| '+' { ifndef_ripper($$ = '+'); }
| '-' { ifndef_ripper($$ = '-'); }
| '*' { ifndef_ripper($$ = '*'); }
| tSTAR { ifndef_ripper($$ = '*'); }
| '/' { ifndef_ripper($$ = '/'); }
| '%' { ifndef_ripper($$ = '%'); }
| tPOW { ifndef_ripper($$ = tPOW); }
| '~' { ifndef_ripper($$ = '~'); }
| tUPLUS { ifndef_ripper($$ = tUPLUS); }
| tUMINUS { ifndef_ripper($$ = tUMINUS); }
| tAREF { ifndef_ripper($$ = tAREF); }
| tASET { ifndef_ripper($$ = tASET); }
| '`' { ifndef_ripper($$ = '`'); }
;
reswords : k__LINE__ | k__FILE__ | klBEGIN | klEND
| kALIAS | kAND | kBEGIN | kBREAK | kCASE | kCLASS | kDEF
| kDEFINED | kDO | kELSE | kELSIF | kEND | kENSURE | kFALSE
| kFOR | kIN | kMODULE | kNEXT | kNIL | kNOT
| kOR | kREDO | kRESCUE | kRETRY | kRETURN | kSELF | kSUPER
| kTHEN | kTRUE | kUNDEF | kWHEN | kYIELD
| kIF_MOD | kUNLESS_MOD | kWHILE_MOD | kUNTIL_MOD | kRESCUE_MOD
;
arg : lhs '=' arg
{
/*%%%*/
$$ = node_assign($1, $3);
/*%
$$ = dispatch2(assign, $1, $3);
%*/
}
| lhs '=' arg kRESCUE_MOD arg
{
/*%%%*/
$$ = node_assign($1, NEW_RESCUE($3, NEW_RESBODY(0,$5,0), 0));
/*%
$$ = dispatch2(assign, $1, dispatch2(rescue_mod,$3,$5));
%*/
}
| var_lhs tOP_ASGN arg
{
/*%%%*/
value_expr($3);
if ($1) {
ID vid = $1->nd_vid;
if ($2 == tOROP) {
$1->nd_value = $3;
$$ = NEW_OP_ASGN_OR(gettable(vid), $1);
if (is_asgn_or_id(vid)) {
$$->nd_aid = vid;
}
}
else if ($2 == tANDOP) {
$1->nd_value = $3;
$$ = NEW_OP_ASGN_AND(gettable(vid), $1);
}
else {
$$ = $1;
$$->nd_value = call_op(gettable(vid),$2,1,$3);
}
}
else {
$$ = 0;
}
/*%
$$ = dispatch3(opassign, $1, $2, $3);
%*/
}
| primary_value '[' aref_args ']' tOP_ASGN arg
{
/*%%%*/
NODE *args;
value_expr($6);
args = NEW_LIST($6);
if ($3 && nd_type($3) != NODE_ARRAY)
$3 = NEW_LIST($3);
$3 = list_append($3, NEW_NIL());
list_concat(args, $3);
if ($5 == tOROP) {
$5 = 0;
}
else if ($5 == tANDOP) {
$5 = 1;
}
$$ = NEW_OP_ASGN1($1, $5, args);
fixpos($$, $1);
/*%
$1 = dispatch2(aref_field, $1, $3);
$$ = dispatch3(opassign, $1, $5, $6);
%*/
}
| primary_value '.' tIDENTIFIER tOP_ASGN arg
{
/*%%%*/
value_expr($5);
if ($4 == tOROP) {
$4 = 0;
}
else if ($4 == tANDOP) {
$4 = 1;
}
$$ = NEW_OP_ASGN2($1, $3, $4, $5);
fixpos($$, $1);
/*%
$1 = dispatch3(field, $1, ripper_id2sym('.'), $3);
$$ = dispatch3(opassign, $1, $4, $5);
%*/
}
| primary_value '.' tCONSTANT tOP_ASGN arg
{
/*%%%*/
value_expr($5);
if ($4 == tOROP) {
$4 = 0;
}
else if ($4 == tANDOP) {
$4 = 1;
}
$$ = NEW_OP_ASGN2($1, $3, $4, $5);
fixpos($$, $1);
/*%
$1 = dispatch3(field, $1, ripper_id2sym('.'), $3);
$$ = dispatch3(opassign, $1, $4, $5);
%*/
}
| primary_value tCOLON2 tIDENTIFIER tOP_ASGN arg
{
/*%%%*/
value_expr($5);
if ($4 == tOROP) {
$4 = 0;
}
else if ($4 == tANDOP) {
$4 = 1;
}
$$ = NEW_OP_ASGN2($1, $3, $4, $5);
fixpos($$, $1);
/*%
$1 = dispatch3(field, $1, ripper_intern("::"), $3);
$$ = dispatch3(opassign, $1, $4, $5);
%*/
}
| primary_value tCOLON2 tCONSTANT tOP_ASGN arg
{
/*%%%*/
yyerror("constant re-assignment");
$$ = 0;
/*%
$$ = dispatch2(constpath_field, $1, $3);
$$ = dispatch3(opassign, $$, $4, $5);
$$ = dispatch1(assign_error, $$);
%*/
}
| tCOLON3 tCONSTANT tOP_ASGN arg
{
/*%%%*/
yyerror("constant re-assignment");
$$ = 0;
/*%
$$ = dispatch1(topconst_field, $2);
$$ = dispatch3(opassign, $$, $3, $4);
$$ = dispatch1(assign_error, $$);
%*/
}
| backref tOP_ASGN arg
{
/*%%%*/
rb_backref_error($1);
$$ = 0;
/*%
$$ = dispatch1(var_field, $1);
$$ = dispatch3(opassign, $$, $2, $3);
$$ = dispatch1(assign_error, $$);
%*/
}
| arg tDOT2 arg
{
/*%%%*/
value_expr($1);
value_expr($3);
if (nd_type($1) == NODE_LIT && FIXNUM_P($1->nd_lit) &&
nd_type($3) == NODE_LIT && FIXNUM_P($3->nd_lit)) {
$1->nd_lit = rb_range_new($1->nd_lit, $3->nd_lit, Qfalse);
$$ = $1;
}
else {
$$ = NEW_DOT2($1, $3);
}
/*%
$$ = dispatch2(dot2, $1, $3);
%*/
}
| arg tDOT3 arg
{
/*%%%*/
value_expr($1);
value_expr($3);
if (nd_type($1) == NODE_LIT && FIXNUM_P($1->nd_lit) &&
nd_type($3) == NODE_LIT && FIXNUM_P($3->nd_lit)) {
$1->nd_lit = rb_range_new($1->nd_lit, $3->nd_lit, Qtrue);
$$ = $1;
}
else {
$$ = NEW_DOT3($1, $3);
}
/*%
$$ = dispatch2(dot3, $1, $3);
%*/
}
| arg '+' arg
{
/*%%%*/
$$ = call_op($1, '+', 1, $3);
/*%
$$ = dispatch3(binary, $1, ID2SYM('+'), $3);
%*/
}
| arg '-' arg
{
/*%%%*/
$$ = call_op($1, '-', 1, $3);
/*%
$$ = dispatch3(binary, $1, ID2SYM('-'), $3);
%*/
}
| arg '*' arg
{
/*%%%*/
$$ = call_op($1, '*', 1, $3);
/*%
$$ = dispatch3(binary, $1, ID2SYM('*'), $3);
%*/
}
| arg '/' arg
{
/*%%%*/
$$ = call_op($1, '/', 1, $3);
/*%
$$ = dispatch3(binary, $1, ID2SYM('/'), $3);
%*/
}
| arg '%' arg
{
/*%%%*/
$$ = call_op($1, '%', 1, $3);
/*%
$$ = dispatch3(binary, $1, ID2SYM('%'), $3);
%*/
}
| arg tPOW arg
{
/*%%%*/
$$ = call_op($1, tPOW, 1, $3);
/*%
$$ = dispatch3(binary, $1, ripper_intern("**"), $3);
%*/
}
| tUMINUS_NUM tINTEGER tPOW arg
{
/*%%%*/
$$ = call_op(call_op($2, tPOW, 1, $4), tUMINUS, 0, 0);
/*%
$$ = dispatch3(binary, $2, ripper_intern("**"), $4);
$$ = dispatch2(unary, ripper_intern("-@"), $$);
%*/
}
| tUMINUS_NUM tFLOAT tPOW arg
{
/*%%%*/
$$ = call_op(call_op($2, tPOW, 1, $4), tUMINUS, 0, 0);
/*%
$$ = dispatch3(binary, $2, ripper_intern("**"), $4);
$$ = dispatch2(unary, ripper_intern("-@"), $$);
%*/
}
| tUPLUS arg
{
/*%%%*/
if ($2 && nd_type($2) == NODE_LIT) {
$$ = $2;
}
else {
$$ = call_op($2, tUPLUS, 0, 0);
}
/*%
$$ = dispatch2(unary, ripper_intern("+@"), $2);
%*/
}
| tUMINUS arg
{
/*%%%*/
$$ = call_op($2, tUMINUS, 0, 0);
/*%
$$ = dispatch2(unary, ripper_intern("-@"), $2);
%*/
}
| arg '|' arg
{
/*%%%*/
$$ = call_op($1, '|', 1, $3);
/*%
$$ = dispatch3(binary, $1, ID2SYM('!'), $3);
%*/
}
| arg '^' arg
{
/*%%%*/
$$ = call_op($1, '^', 1, $3);
/*%
$$ = dispatch3(binary, $1, ID2SYM('^'), $3);
%*/
}
| arg '&' arg
{
/*%%%*/
$$ = call_op($1, '&', 1, $3);
/*%
$$ = dispatch3(binary, $1, ID2SYM('&'), $3);
%*/
}
| arg tCMP arg
{
/*%%%*/
$$ = call_op($1, tCMP, 1, $3);
/*%
$$ = dispatch3(binary, $1, ripper_intern("<=>"), $3);
%*/
}
| arg '>' arg
{
/*%%%*/
$$ = call_op($1, '>', 1, $3);
/*%
$$ = dispatch3(binary, $1, ID2SYM('>'), $3);
%*/
}
| arg tGEQ arg
{
/*%%%*/
$$ = call_op($1, tGEQ, 1, $3);
/*%
$$ = dispatch3(binary, $1, ripper_intern(">="), $3);
%*/
}
| arg '<' arg
{
/*%%%*/
$$ = call_op($1, '<', 1, $3);
/*%
$$ = dispatch3(binary, $1, ID2SYM('<'), $3);
%*/
}
| arg tLEQ arg
{
/*%%%*/
$$ = call_op($1, tLEQ, 1, $3);
/*%
$$ = dispatch3(binary, $1, ripper_intern("<="), $3);
%*/
}
| arg tEQ arg
{
/*%%%*/
$$ = call_op($1, tEQ, 1, $3);
/*%
$$ = dispatch3(binary, $1, ripper_intern("=="), $3);
%*/
}
| arg tEQQ arg
{
/*%%%*/
$$ = call_op($1, tEQQ, 1, $3);
/*%
$$ = dispatch3(binary, $1, ripper_intern("==="), $3);
%*/
}
| arg tNEQ arg
{
/*%%%*/
$$ = NEW_NOT(call_op($1, tEQ, 1, $3));
/*%
$$ = dispatch3(binary, $1, ripper_intern("!="), $3);
%*/
}
| arg tMATCH arg
{
/*%%%*/
$$ = match_op($1, $3);
/*%
$$ = dispatch3(binary, $1, ripper_intern("=~"), $3);
%*/
}
| arg tNMATCH arg
{
/*%%%*/
$$ = NEW_NOT(match_op($1, $3));
/*%
$$ = dispatch3(binary, $1, ripper_intern("!~"), $3);
%*/
}
| '!' arg
{
/*%%%*/
$$ = NEW_NOT(cond($2));
/*%
$$ = dispatch2(unary, ID2SYM('!'), $2);
%*/
}
| '~' arg
{
/*%%%*/
$$ = call_op($2, '~', 0, 0);
/*%
$$ = dispatch2(unary, ID2SYM('~'), $2);
%*/
}
| arg tLSHFT arg
{
/*%%%*/
$$ = call_op($1, tLSHFT, 1, $3);
/*%
$$ = dispatch3(binary, $1, ripper_intern("<<"), $3);
%*/
}
| arg tRSHFT arg
{
/*%%%*/
$$ = call_op($1, tRSHFT, 1, $3);
/*%
$$ = dispatch3(binary, $1, ripper_intern(">>"), $3);
%*/
}
| arg tANDOP arg
{
/*%%%*/
$$ = logop(NODE_AND, $1, $3);
/*%
$$ = dispatch3(binary, $1, ripper_intern("&&"), $3);
%*/
}
| arg tOROP arg
{
/*%%%*/
$$ = logop(NODE_OR, $1, $3);
/*%
$$ = dispatch3(binary, $1, ripper_intern("||"), $3);
%*/
}
| kDEFINED opt_nl {in_defined = 1;} arg
{
/*%%%*/
in_defined = 0;
$$ = NEW_DEFINED($4);
/*%
in_defined = 0;
$$ = dispatch1(defined, $4);
%*/
}
| arg '?' arg ':' arg
{
/*%%%*/
$$ = NEW_IF(cond($1), $3, $5);
fixpos($$, $1);
/*%
$$ = dispatch3(ifop, $1, $3, $5);
%*/
}
| primary
{
$$ = $1;
}
;
arg_value : arg
{
/*%%%*/
value_expr($1);
$$ = $1;
/*%
$$ = $1;
%*/
}
;
aref_args : none
| command opt_nl
{
/*%%%*/
rb_warn("parenthesize argument(s) for future version");
$$ = NEW_LIST($1);
/*%
rb_warn0("parenthesize argument(s) for future version");
$$ = arg_add(arg_new(), $1);
%*/
}
| args trailer
{
$$ = $1;
}
| args ',' tSTAR arg opt_nl
{
/*%%%*/
value_expr($4);
$$ = arg_concat($1, $4);
/*%
$$ = arg_add_star($1, $4);
%*/
}
| assocs trailer
{
/*%%%*/
$$ = NEW_LIST(NEW_HASH($1));
/*%
$$ = arg_add_assocs(arg_new(), $1);
%*/
}
| tSTAR arg opt_nl
{
/*%%%*/
value_expr($2);
$$ = newline_node(NEW_SPLAT($2));
/*%
$$ = arg_add_star(arg_new(), $2);
%*/
}
;
paren_args : '(' none ')'
{
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(arg_paren, arg_new());
%*/
}
| '(' call_args rparen
{
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(arg_paren, $2);
%*/
}
| '(' block_call rparen
{
/*%%%*/
rb_warn("parenthesize argument for future version");
$$ = NEW_LIST($2);
/*%
rb_warn0("parenthesize argument for future version");
$$ = dispatch1(arg_paren, arg_add(arg_new(), $2));
%*/
}
| '(' args ',' block_call rparen
{
/*%%%*/
rb_warn("parenthesize argument for future version");
$$ = list_append($2, $4);
/*%
rb_warn0("parenthesize argument for future version");
$$ = dispatch1(arg_paren, arg_add($2, $4));
%*/
}
;
opt_paren_args : none
| paren_args
;
call_args : command
{
/*%%%*/
rb_warn("parenthesize argument(s) for future version");
$$ = NEW_LIST($1);
/*%
rb_warn0("parenthesize argument(s) for future version");
$$ = arg_add(arg_new(), $1);
%*/
}
| args opt_block_arg
{
/*%%%*/
$$ = arg_blk_pass($1, $2);
/*%
$$ = arg_add_optblock($1, $2);
%*/
}
| args ',' tSTAR arg_value opt_block_arg
{
/*%%%*/
$$ = arg_concat($1, $4);
$$ = arg_blk_pass($$, $5);
/*%
arg_add_optblock(arg_add_star($1, $4), $5);
%*/
}
| assocs opt_block_arg
{
/*%%%*/
$$ = NEW_LIST(NEW_HASH($1));
$$ = arg_blk_pass($$, $2);
/*%
$$ = arg_add_assocs(arg_new(), $1);
$$ = arg_add_optblock($$, $2);
%*/
}
| assocs ',' tSTAR arg_value opt_block_arg
{
/*%%%*/
$$ = arg_concat(NEW_LIST(NEW_HASH($1)), $4);
$$ = arg_blk_pass($$, $5);
/*%
$$ = arg_add_star(arg_add_assocs(arg_new(), $1), $4);
$$ = arg_add_optblock($$, $5);
%*/
}
| args ',' assocs opt_block_arg
{
/*%%%*/
$$ = list_append($1, NEW_HASH($3));
$$ = arg_blk_pass($$, $4);
/*%
$$ = arg_add_optblock(arg_add_assocs($1, $3), $4);
%*/
}
| args ',' assocs ',' tSTAR arg opt_block_arg
{
/*%%%*/
value_expr($6);
$$ = arg_concat(list_append($1, NEW_HASH($3)), $6);
$$ = arg_blk_pass($$, $7);
/*%
$$ = arg_add_star(arg_add_assocs($1, $3), $6);
$$ = arg_add_optblock($$, $7);
%*/
}
| tSTAR arg_value opt_block_arg
{
/*%%%*/
$$ = arg_blk_pass(NEW_SPLAT($2), $3);
/*%
$$ = arg_add_optblock(arg_add_star(arg_new(), $2), $3);
%*/
}
| block_arg
/*%c%*/
/*%c
{
$$ = arg_add_block(arg_new(), $1);
}
%*/
;
call_args2 : arg_value ',' args opt_block_arg
{
/*%%%*/
$$ = arg_blk_pass(list_concat(NEW_LIST($1),$3), $4);
/*%
$$ = arg_add_optblock(arg_prepend($3, $1), $4);
%*/
}
| arg_value ',' block_arg
{
/*%%%*/
$$ = arg_blk_pass($1, $3);
/*%
$$ = arg_add_block(arg_add(arg_new(), $1), $3);
%*/
}
| arg_value ',' tSTAR arg_value opt_block_arg
{
/*%%%*/
$$ = arg_concat(NEW_LIST($1), $4);
$$ = arg_blk_pass($$, $5);
/*%
$$ = arg_add_star(arg_add(arg_new(), $1), $4);
$$ = arg_add_optblock($$, $5);
%*/
}
| arg_value ',' args ',' tSTAR arg_value opt_block_arg
{
/*%%%*/
$$ = arg_concat(list_concat(NEW_LIST($1),$3), $6);
$$ = arg_blk_pass($$, $7);
/*%
$$ = arg_add_star(arg_prepend($3, $1), $6);
$$ = arg_add_optblock($$, $7);
%*/
}
| assocs opt_block_arg
{
/*%%%*/
$$ = NEW_LIST(NEW_HASH($1));
$$ = arg_blk_pass($$, $2);
/*%
$$ = arg_add_optblock(arg_add_assocs(arg_new(), $1), $2);
%*/
}
| assocs ',' tSTAR arg_value opt_block_arg
{
/*%%%*/
$$ = arg_concat(NEW_LIST(NEW_HASH($1)), $4);
$$ = arg_blk_pass($$, $5);
/*%
$$ = arg_add_star(arg_add_assocs(arg_new(), $1), $4);
$$ = arg_add_optblock($$, $4);
%*/
}
| arg_value ',' assocs opt_block_arg
{
/*%%%*/
$$ = list_append(NEW_LIST($1), NEW_HASH($3));
$$ = arg_blk_pass($$, $4);
/*%
$$ = arg_add_assocs(arg_add(arg_new(), $1), $3);
$$ = arg_add_optblock($$, $4);
%*/
}
| arg_value ',' args ',' assocs opt_block_arg
{
/*%%%*/
$$ = list_append(list_concat(NEW_LIST($1),$3), NEW_HASH($5));
$$ = arg_blk_pass($$, $6);
/*%
$$ = arg_add_assocs(arg_prepend($3, $1), $5);
$$ = arg_add_optblock($$, $6);
%*/
}
| arg_value ',' assocs ',' tSTAR arg_value opt_block_arg
{
/*%%%*/
$$ = arg_concat(list_append(NEW_LIST($1), NEW_HASH($3)), $6);
$$ = arg_blk_pass($$, $7);
/*%
$$ = arg_add_assocs(arg_add(arg_new(), $1), $3);
$$ = arg_add_star($$, $6);
$$ = arg_add_optblock($$, $7);
%*/
}
| arg_value ',' args ',' assocs ',' tSTAR arg_value opt_block_arg
{
/*%%%*/
$$ = arg_concat(list_append(list_concat(NEW_LIST($1), $3), NEW_HASH($5)), $8);
$$ = arg_blk_pass($$, $9);
/*%
$$ = arg_add_assocs(arg_prepend($3, $1), $5);
$$ = arg_add_star($$, $8);
$$ = arg_add_optblock($$, $9);
%*/
}
| tSTAR arg_value opt_block_arg
{
/*%%%*/
$$ = arg_blk_pass(NEW_SPLAT($2), $3);
/*%
$$ = arg_add_optblock(arg_add_star(arg_new(), $2), $3);
%*/
}
| block_arg
;
command_args : {
$<num>$ = cmdarg_stack;
CMDARG_PUSH(1);
}
open_args
{
/* CMDARG_POP() */
cmdarg_stack = $<num>1;
$$ = $2;
}
;
open_args : call_args
| tLPAREN_ARG {lex_state = EXPR_ENDARG;} rparen
{
/*%%%*/
rb_warning("don't put space before argument parentheses");
$$ = 0;
/*%
$$ = dispatch1(space, dispatch1(arg_paren, arg_new()));
%*/
}
| tLPAREN_ARG call_args2 {lex_state = EXPR_ENDARG;} rparen
{
/*%%%*/
rb_warning("don't put space before argument parentheses");
$$ = $2;
/*%
$$ = dispatch1(space, dispatch1(arg_paren, $2));
%*/
}
;
block_arg : tAMPER arg_value
{
/*%%%*/
$$ = NEW_BLOCK_PASS($2);
/*%
$$ = $2;
%*/
}
;
opt_block_arg : ',' block_arg
{
$$ = $2;
}
| none
;
args : arg_value
{
/*%%%*/
$$ = NEW_LIST($1);
/*%
$$ = arg_add(arg_new(), $1);
%*/
}
| args ',' arg_value
{
/*%%%*/
$$ = list_append($1, $3);
/*%
$$ = arg_add($1, $3);
%*/
}
;
mrhs : args ',' arg_value
{
/*%%%*/
$$ = list_append($1, $3);
/*%
$$ = mrhs_add(args2mrhs($1), $3);
%*/
}
| args ',' tSTAR arg_value
{
/*%%%*/
$$ = arg_concat($1, $4);
/*%
$$ = 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
| var_ref
| backref
| tFID
{
/*%%%*/
$$ = NEW_FCALL($1, 0);
/*%
$$ = method_arg(dispatch1(fcall, $1), arg_new());
%*/
}
| kBEGIN
{
/*%%%*/
$<num>1 = ruby_sourceline;
/*%
%*/
}
bodystmt
kEND
{
/*%%%*/
if ($3 == NULL) {
$$ = NEW_NIL();
}
else {
if (nd_type($3) == NODE_RESCUE ||
nd_type($3) == NODE_ENSURE)
nd_set_line($3, $<num>1);
$$ = NEW_BEGIN($3);
}
nd_set_line($$, $<num>1);
/*%
$$ = dispatch1(begin, $3);
%*/
}
| tLPAREN_ARG expr {lex_state = EXPR_ENDARG;} rparen
{
/*%%%*/
rb_warning("(...) interpreted as grouped expression");
$$ = $2;
/*%
rb_warning0("(...) interpreted as grouped expression");
$$ = dispatch1(paren, $2);
%*/
}
| tLPAREN compstmt ')'
{
/*%%%*/
if (!$2) $$ = NEW_NIL();
else $$ = $2;
/*%
$$ = dispatch1(paren, $2);
%*/
}
| primary_value tCOLON2 tCONSTANT
{
/*%%%*/
$$ = NEW_COLON2($1, $3);
/*%
$$ = dispatch2(constpath_ref, $1, $3);
%*/
}
| tCOLON3 tCONSTANT
{
/*%%%*/
$$ = NEW_COLON3($2);
/*%
$$ = dispatch1(topconst_ref, $2);
%*/
}
| tLBRACK aref_args ']'
{
/*%%%*/
if ($2 == 0) {
$$ = NEW_ZARRAY(); /* zero length array*/
}
else {
$$ = $2;
}
/*%
$$ = dispatch1(array, escape_Qundef($2));
%*/
}
| tLBRACE assoc_list '}'
{
/*%%%*/
$$ = NEW_HASH($2);
/*%
$$ = dispatch1(hash, escape_Qundef($2));
%*/
}
| kRETURN
{
/*%%%*/
$$ = NEW_RETURN(0);
/*%
$$ = dispatch0(return0);
%*/
}
| kYIELD '(' call_args rparen
{
/*%%%*/
$$ = new_yield($3);
/*%
$$ = dispatch1(yield, dispatch1(paren, $3));
%*/
}
| kYIELD '(' rparen
{
/*%%%*/
$$ = NEW_YIELD(0, Qfalse);
/*%
$$ = dispatch1(yield, dispatch1(paren, arg_new()));
%*/
}
| kYIELD
{
/*%%%*/
$$ = NEW_YIELD(0, Qfalse);
/*%
$$ = dispatch0(yield0);
%*/
}
| kDEFINED opt_nl '(' {in_defined = 1;} expr rparen
{
/*%%%*/
in_defined = 0;
$$ = NEW_DEFINED($5);
/*%
in_defined = 0;
$$ = dispatch1(defined, $5);
%*/
}
| operation brace_block
{
/*%%%*/
$2->nd_iter = NEW_FCALL($1, 0);
$$ = $2;
fixpos($2->nd_iter, $2);
/*%
$$ = method_arg(dispatch1(fcall, $1), arg_new());
$$ = dispatch2(iter_block, $$, $2);
%*/
}
| method_call
| method_call brace_block
{
/*%%%*/
block_dup_check($$);
$2->nd_iter = $1;
$$ = $2;
fixpos($$, $1);
/*%
$$ = dispatch2(iter_block, $1, $2);
%*/
}
| tLAMBDA lambda
{
$$ = $2;
}
| kIF expr_value then
compstmt
if_tail
kEND
{
/*%%%*/
$$ = NEW_IF(cond($2), $4, $5);
fixpos($$, $2);
if (cond_negative(&$$->nd_cond)) {
NODE *tmp = $$->nd_body;
$$->nd_body = $$->nd_else;
$$->nd_else = tmp;
}
/*%
$$ = dispatch3(if, $2, $4, escape_Qundef($5));
%*/
}
| kUNLESS expr_value then
compstmt
opt_else
kEND
{
/*%%%*/
$$ = NEW_UNLESS(cond($2), $4, $5);
fixpos($$, $2);
if (cond_negative(&$$->nd_cond)) {
NODE *tmp = $$->nd_body;
$$->nd_body = $$->nd_else;
$$->nd_else = tmp;
}
/*%
$$ = dispatch3(unless, $2, $4, escape_Qundef($5));
%*/
}
| kWHILE {COND_PUSH(1);} expr_value do {COND_POP();}
compstmt
kEND
{
/*%%%*/
$$ = NEW_WHILE(cond($3), $6, 1);
fixpos($$, $3);
if (cond_negative(&$$->nd_cond)) {
nd_set_type($$, NODE_UNTIL);
}
/*%
$$ = dispatch2(while, $3, $6);
%*/
}
| kUNTIL {COND_PUSH(1);} expr_value do {COND_POP();}
compstmt
kEND
{
/*%%%*/
$$ = NEW_UNTIL(cond($3), $6, 1);
fixpos($$, $3);
if (cond_negative(&$$->nd_cond)) {
nd_set_type($$, NODE_WHILE);
}
/*%
$$ = dispatch2(until, $3, $6);
%*/
}
| kCASE expr_value opt_terms
case_body
kEND
{
/*%%%*/
$$ = NEW_CASE($2, $4);
fixpos($$, $2);
/*%
$$ = dispatch2(case, $2, $4);
%*/
}
| kCASE expr_value opt_terms kELSE compstmt kEND
{
/*%%%*/
$$ = block_append($2, $5);
/*%
$$ = dispatch2(case, $2, dispatch1(else, $5));
%*/
}
| kCASE opt_terms case_body kEND
{
/*%%%*/
$$ = $3;
/*%
$$ = dispatch2(case, Qnil, $3);
%*/
}
| kCASE opt_terms kELSE compstmt kEND
{
/*%%%*/
$$ = $4;
/*%
$$ = dispatch2(case, Qnil, dispatch1(else, $4));
%*/
}
| kFOR for_var kIN {COND_PUSH(1);} expr_value do {COND_POP();}
compstmt
kEND
{
/*%%%*/
$$ = NEW_FOR($2, $5, $8);
fixpos($$, $2);
/*%
$$ = dispatch3(for, $2, $5, $8);
%*/
}
| kCLASS cpath superclass
{
/*%%%*/
if (in_def || in_single)
yyerror("class definition in method body");
class_nest++;
local_push(0);
$<num>$ = ruby_sourceline;
/*%
if (in_def || in_single)
yyerror("class definition in method body");
class_nest++;
%*/
}
bodystmt
kEND
{
/*%%%*/
$$ = NEW_CLASS($2, $5, $3);
nd_set_line($$, $<num>4);
local_pop();
class_nest--;
/*%
$$ = dispatch3(class, $2, $3, $5);
class_nest--;
%*/
}
| kCLASS tLSHFT expr
{
/*%%%*/
$<num>$ = in_def;
in_def = 0;
/*%
in_def = 0;
%*/
}
term
{
/*%%%*/
$<num>$ = in_single;
in_single = 0;
class_nest++;
local_push(0);
/*%
$$ = in_single;
in_single = 0;
class_nest++;
%*/
}
bodystmt
kEND
{
/*%%%*/
$$ = NEW_SCLASS($3, $7);
fixpos($$, $3);
local_pop();
class_nest--;
in_def = $<num>4;
in_single = $<num>6;
/*%
$$ = dispatch2(sclass, $3, $7);
class_nest--;
in_def = $<val>4;
in_single = $<val>6;
%*/
}
| kMODULE cpath
{
/*%%%*/
if (in_def || in_single)
yyerror("module definition in method body");
class_nest++;
local_push(0);
$<num>$ = ruby_sourceline;
/*%
if (in_def || in_single)
yyerror("module definition in method body");
class_nest++;
%*/
}
bodystmt
kEND
{
/*%%%*/
$$ = NEW_MODULE($2, $4);
nd_set_line($$, $<num>3);
local_pop();
class_nest--;
/*%
$$ = dispatch2(module, $2, $4);
class_nest--;
%*/
}
| kDEF fname
{
/*%%%*/
$<id>$ = cur_mid;
cur_mid = $2;
in_def++;
local_push(0);
/*%
$<id>$ = cur_mid;
cur_mid = $2;
in_def++;
%*/
}
f_arglist
bodystmt
kEND
{
/*%%%*/
NODE *body = remove_begin($5);
reduce_nodes(&body);
$$ = NEW_DEFN($2, $4, body, NOEX_PRIVATE);
fixpos($$, $4);
local_pop();
in_def--;
cur_mid = $<id>3;
/*%
$$ = dispatch3(def, $2, $4, $5);
in_def--;
cur_mid = $<id>3;
%*/
}
| kDEF singleton dot_or_colon {lex_state = EXPR_FNAME;} fname
{
/*%%%*/
in_single++;
local_push(0);
lex_state = EXPR_END; /* force for args */
/*%
in_single++;
lex_state = EXPR_END;
%*/
}
f_arglist
bodystmt
kEND
{
/*%%%*/
NODE *body = remove_begin($8);
reduce_nodes(&body);
$$ = NEW_DEFS($2, $5, $7, body);
fixpos($$, $2);
local_pop();
in_single--;
/*%
$$ = dispatch5(defs, $2, $3, $5, $7, $8);
in_single--;
%*/
}
| kBREAK
{
/*%%%*/
$$ = NEW_BREAK(0);
/*%
$$ = dispatch1(break, arg_new());
%*/
}
| kNEXT
{
/*%%%*/
$$ = NEW_NEXT(0);
/*%
$$ = dispatch1(next, arg_new());
%*/
}
| kREDO
{
/*%%%*/
$$ = NEW_REDO();
/*%
$$ = dispatch0(redo);
%*/
}
| kRETRY
{
/*%%%*/
$$ = NEW_RETRY();
/*%
$$ = dispatch0(retry);
%*/
}
;
primary_value : primary
{
/*%%%*/
value_expr($1);
$$ = $1;
/*%
$$ = $1;
%*/
}
;
then : term
/*%c%*/
/*%c
{ $$ = Qnil; }
%*/
| ':'
/*%c%*/
/*%c
{ $$ = Qnil; }
%*/
| kTHEN
| term kTHEN
/*%c%*/
/*%c
{ $$ = $2; }
%*/
;
do : term
/*%c%*/
/*%c
{ $$ = Qnil; }
%*/
| ':'
/*%c%*/
/*%c
{ $$ = Qnil; }
%*/
| kDO_COND
;
if_tail : opt_else
| kELSIF expr_value then
compstmt
if_tail
{
/*%%%*/
$$ = NEW_IF(cond($2), $4, $5);
fixpos($$, $2);
/*%
$$ = dispatch3(elsif, $2, $4, escape_Qundef($5));
%*/
}
;
opt_else : none
| kELSE compstmt
{
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(else, $2);
%*/
}
;
for_var : lhs
| mlhs
;
block_param0 : mlhs_item
{
/*%%%*/
$$ = NEW_LIST($1);
/*%
$$ = mlhs_add(mlhs_new(), $1);
%*/
}
| block_param0 ',' mlhs_item
{
/*%%%*/
$$ = list_append($1, $3);
/*%
$$ = mlhs_add($1, $3);
%*/
}
;
block_param : block_param0
{
/*%%%*/
if ($1->nd_alen == 1) {
$$ = $1->nd_head;
rb_gc_force_recycle((VALUE)$1);
}
else {
$$ = NEW_MASGN($1, 0);
}
/*%
$$ = blockvar_new($1);
%*/
}
| block_param0 ','
{
/*%%%*/
$$ = NEW_MASGN($1, 0);
/*%
$$ = blockvar_new($1);
%*/
}
| block_param0 ',' tAMPER lhs
{
/*%%%*/
$$ = NEW_BLOCK_PARAM($4, NEW_MASGN($1, 0));
/*%
$$ = blockvar_add_block(blockvar_new($1), $4);
%*/
}
| block_param0 ',' tSTAR lhs ',' tAMPER lhs
{
/*%%%*/
$$ = NEW_BLOCK_PARAM($7, NEW_MASGN($1, $4));
/*%
$$ = blockvar_add_star(blockvar_new($1), $4);
$$ = blockvar_add_block($$, $7);
%*/
}
| block_param0 ',' tSTAR ',' tAMPER lhs
{
/*%%%*/
$$ = NEW_BLOCK_PARAM($6, NEW_MASGN($1, -1));
/*%
$$ = blockvar_add_star(blockvar_new($1), Qnil);
$$ = blockvar_add_block($$, $6);
%*/
}
| block_param0 ',' tSTAR lhs
{
/*%%%*/
$$ = NEW_MASGN($1, $4);
/*%
$$ = blockvar_add_star(blockvar_new($1), $4);
%*/
}
| block_param0 ',' tSTAR
{
/*%%%*/
$$ = NEW_MASGN($1, -1);
/*%
$$ = blockvar_add_star(blockvar_new($1), Qnil);
%*/
}
| tSTAR lhs ',' tAMPER lhs
{
/*%%%*/
$$ = NEW_BLOCK_PARAM($5, NEW_MASGN(0, $2));
/*%
$$ = blockvar_add_star(blockvar_new(Qnil), $2);
$$ = blockvar_add_block($$, $5);
%*/
}
| tSTAR ',' tAMPER lhs
{
/*%%%*/
$$ = NEW_BLOCK_PARAM($4, NEW_MASGN(0, -1));
/*%
$$ = blockvar_add_star(blockvar_new(Qnil), Qnil);
$$ = blockvar_add_block($$, $4);
%*/
}
| tSTAR lhs
{
/*%%%*/
$$ = NEW_MASGN(0, $2);
/*%
$$ = blockvar_add_star(blockvar_new(Qnil), $2);
%*/
}
| tSTAR
{
/*%%%*/
$$ = NEW_MASGN(0, -1);
/*%
$$ = blockvar_add_star(blockvar_new(Qnil), Qnil);
%*/
}
| tAMPER lhs
{
/*%%%*/
$$ = NEW_BLOCK_PARAM($2, (NODE*)1);
/*%
$$ = blockvar_add_block(blockvar_new(Qnil), $2);
%*/
}
;
opt_block_param : none
{
/*%%%*/
$$ = NEW_ITER(0, 0, 0);
/*%
%*/
}
| block_param_def
;
block_param_def : '|' opt_bv_decl '|'
{
/*%%%*/
$$ = NEW_ITER((NODE*)1, 0, $2);
/*%
$$ = blockvar_new(mlhs_new());
%*/
}
| tOROP
{
/*%%%*/
$$ = NEW_ITER((NODE*)1, 0, 0);
/*%
$$ = blockvar_new(mlhs_new());
%*/
}
| '|' block_param opt_bv_decl '|'
{
/*%%%*/
$$ = NEW_ITER($2, 0, $3);
/*%
$$ = blockvar_new($2);
%*/
}
;
opt_bv_decl : none
| ';' bv_decls
{
/*%%%*/
$$ = $2;
/*%
$$ = FIXME;
%*/
}
;
bv_decls : bv_decl
{
/*%%%*/
$$ = $1;
/*%
$$ = FIXME;
%*/
}
| bv_decls ',' bv_decl
{
/*%%%*/
$$ = block_append($1, $3);
/*%
$$ = FIXME;
%*/
}
;
bv_decl : tIDENTIFIER
{
/*%%%*/
$$ = new_bv($1, NEW_NIL());
/*%
$$ = FIXME;
%*/
}
;
lambda : {
/*%%%*/
$<vars>$ = dyna_push();
/*%
%*/
}
{
$<num>$ = lpar_beg;
lpar_beg = ++paren_nest;
}
f_larglist
{
$<vars>$ = ruby_dyna_vars;
}
lambda_body
{
/*%%%*/
$$ = $3;
$$->nd_body = block_append($$->nd_body, $5);
dyna_pop($<vars>1);
lpar_beg = $<num>2;
/*%
$$ = dispatch2(lambda, $3, $5);
%*/
}
;
f_larglist : '(' f_args opt_bv_decl rparen
{
/*%%%*/
$$ = NEW_LAMBDA($2, $3);
/*%
$$ = dispatch1(paren, $2);
%*/
}
| f_args opt_bv_decl
{
/*%%%*/
$$ = NEW_LAMBDA($1, $2);
/*%
$$ = $1;
%*/
}
;
lambda_body : tLAMBEG compstmt '}'
{
$$ = $2;
}
| kDO_LAMBDA compstmt kEND
{
$$ = $2;
}
;
do_block : kDO_BLOCK
{
/*%%%*/
$<vars>$ = dyna_push();
$<num>1 = ruby_sourceline;
/*% %*/
}
opt_block_param
{
/*%%%*/
$<vars>$ = ruby_dyna_vars;
/*% %*/
}
compstmt
kEND
{
/*%%%*/
$3->nd_body = block_append($3->nd_body,
dyna_init($5, $<vars>4));
$$ = $3;
nd_set_line($$, $<num>1);
dyna_pop($<vars>2);
/*%
$$ = dispatch2(do_block, escape_Qundef($3), $5);
%*/
}
;
block_call : command do_block
{
/*%%%*/
block_dup_check($1);
$2->nd_iter = $1;
$$ = $2;
fixpos($$, $1);
/*%
$$ = dispatch2(iter_block, $1, $2);
%*/
}
| block_call '.' operation2 opt_paren_args
{
/*%%%*/
$$ = new_call($1, $3, $4);
/*%
$$ = dispatch3(call, $1, ripper_id2sym('.'), $3);
$$ = method_optarg($$, $4);
%*/
}
| block_call tCOLON2 operation2 opt_paren_args
{
/*%%%*/
$$ = new_call($1, $3, $4);
/*%
$$ = dispatch3(call, $1, ripper_intern("::"), $3);
$$ = method_optarg($$, $4);
%*/
}
;
method_call : operation paren_args
{
/*%%%*/
$$ = new_fcall($1, $2);
fixpos($$, $2);
/*%
$$ = method_arg(dispatch1(fcall, $1), $2);
%*/
}
| primary_value '.' operation2 opt_paren_args
{
/*%%%*/
$$ = new_call($1, $3, $4);
fixpos($$, $1);
/*%
$$ = dispatch3(call, $1, ripper_id2sym('.'), $3);
$$ = method_optarg($$, $4);
%*/
}
| primary_value tCOLON2 operation2 paren_args
{
/*%%%*/
$$ = new_call($1, $3, $4);
fixpos($$, $1);
/*%
$$ = dispatch3(call, $1, ripper_id2sym('.'), $3);
$$ = method_optarg($$, $4);
%*/
}
| primary_value tCOLON2 operation3
{
/*%%%*/
$$ = new_call($1, $3, 0);
/*%
$$ = dispatch3(call, $1, ripper_intern("::"), $3);
%*/
}
| kSUPER paren_args
{
/*%%%*/
$$ = new_super($2);
/*%
$$ = dispatch1(super, $2);
%*/
}
| kSUPER
{
/*%%%*/
$$ = NEW_ZSUPER();
/*%
$$ = dispatch0(zsuper);
%*/
}
| tLPAREN compstmt ')' paren_args
{
/*%%%*/
if (!$2) $2 = NEW_NIL();
$$ = new_call($2, rb_intern("call"), $4);
fixpos($$, $2);
/*%
$$ = dispatch3(call, dispatch1(paren, $2),
ripper_id2sym('.'), rb_intern("call"));
$$ = method_optarg($$, $4);
%*/
}
| primary_value '[' aref_args ']'
{
/*%%%*/
if ($1 && nd_type($1) == NODE_SELF)
$$ = NEW_FCALL(tAREF, $3);
else
$$ = NEW_CALL($1, tAREF, $3);
fixpos($$, $1);
/*%
$$ = dispatch2(aref, $1, $3);
%*/
}
;
brace_block : '{'
{
/*%%%*/
$<vars>$ = dyna_push();
$<num>1 = ruby_sourceline;
/*% %*/
}
opt_block_param
{
/*%%%*/
$<vars>$ = ruby_dyna_vars;
/*%
%*/
}
compstmt '}'
{
/*%%%*/
$3->nd_body = block_append($3->nd_body,
dyna_init($5, $<vars>4));
$$ = $3;
nd_set_line($$, $<num>1);
dyna_pop($<vars>2);
/*%
$$ = dispatch2(brace_block, escape_Qundef($3), $5);
%*/
}
| kDO
{
/*%%%*/
$<vars>$ = dyna_push();
$<num>1 = ruby_sourceline;
/*% %*/
}
opt_block_param
{
/*%%%*/
$<vars>$ = ruby_dyna_vars;
/*%
%*/
}
compstmt kEND
{
/*%%%*/
$3->nd_body = block_append($3->nd_body,
dyna_init($5, $<vars>4));
$$ = $3;
nd_set_line($$, $<num>1);
dyna_pop($<vars>2);
/*%
$$ = dispatch2(do_block, escape_Qundef($3), $5);
%*/
}
| tLAMBDA_ARG
lambda
{
/*%%%*/
$$ = $2;
nd_set_type($$, NODE_ITER);
/*%
$$ = $2;
$$ = dispatch1(do_block, $2);
%*/
}
;
case_body : kWHEN when_args then
compstmt
cases
{
/*%%%*/
$$ = NEW_WHEN($2, $4, $5);
/*%
$$ = dispatch3(when, $2, $4, escape_Qundef($5));
%*/
}
;
when_args : args
| args ',' tSTAR arg_value
{
/*%%%*/
$$ = list_append($1, NEW_WHEN($4, 0, 0));
/*%
$$ = arg_add_star($1, $4);
%*/
}
| tSTAR arg_value
{
/*%%%*/
$$ = NEW_LIST(NEW_WHEN($2, 0, 0));
/*%
$$ = arg_add_star(arg_new(), $2);
%*/
}
;
cases : opt_else
| case_body
;
opt_rescue : kRESCUE exc_list exc_var then
compstmt
opt_rescue
{
/*%%%*/
if ($3) {
$3 = node_assign($3, NEW_ERRINFO());
$5 = block_append($3, $5);
}
$$ = 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
| none
;
exc_var : tASSOC lhs
{
$$ = $2;
}
| none
;
opt_ensure : kENSURE compstmt
{
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(ensure, $2);
%*/
}
| none
;
literal : numeric
| symbol
{
/*%%%*/
$$ = NEW_LIT(ID2SYM($1));
/*%
$$ = dispatch1(symbol_literal, $1);
%*/
}
| dsym
;
strings : string
{
/*%%%*/
NODE *node = $1;
if (!node) {
node = NEW_STR(rb_str_new(0, 0));
}
else {
node = evstr2dstr(node);
}
$$ = node;
/*%
$$ = $1;
%*/
}
;
string : string1
| string string1
{
/*%%%*/
$$ = literal_concat($1, $2);
/*%
$$ = dispatch2(string_concat, $1, $2);
%*/
}
;
string1 : tSTRING_BEG string_contents tSTRING_END
{
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(string_literal, $2);
%*/
}
;
xstring : tXSTRING_BEG xstring_contents tSTRING_END
{
/*%%%*/
NODE *node = $2;
if (!node) {
node = NEW_XSTR(rb_str_new(0, 0));
}
else {
switch (nd_type(node)) {
case NODE_STR:
nd_set_type(node, NODE_XSTR);
break;
case NODE_DSTR:
nd_set_type(node, NODE_DXSTR);
break;
default:
node = NEW_NODE(NODE_DXSTR, rb_str_new(0, 0), 1, NEW_LIST(node));
break;
}
}
$$ = node;
/*%
$$ = dispatch1(xstring_literal, $2);
%*/
}
;
regexp : tREGEXP_BEG xstring_contents tREGEXP_END
{
/*%%%*/
int options = $3;
NODE *node = $2;
if (!node) {
node = NEW_LIT(rb_reg_compile("", 0, options & ~RE_OPTION_ONCE));
}
else switch (nd_type(node)) {
case NODE_STR:
{
VALUE src = node->nd_lit;
nd_set_type(node, NODE_LIT);
node->nd_lit = rb_reg_compile(RSTRING(src)->ptr,
RSTRING(src)->len,
options & ~RE_OPTION_ONCE);
}
break;
default:
node = NEW_NODE(NODE_DSTR, rb_str_new(0, 0), 1, NEW_LIST(node));
case NODE_DSTR:
if (options & RE_OPTION_ONCE) {
nd_set_type(node, NODE_DREGX_ONCE);
}
else {
nd_set_type(node, NODE_DREGX);
}
node->nd_cflag = options & ~RE_OPTION_ONCE;
break;
}
$$ = node;
/*%
$$ = dispatch2(regexp_literal, $2, $3);
%*/
}
;
words : tWORDS_BEG ' ' tSTRING_END
{
/*%%%*/
$$ = NEW_ZARRAY();
/*%
$$ = dispatch0(words_new);
%*/
}
| tWORDS_BEG word_list tSTRING_END
{
$$ = $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);
/*%
$$ = dispatch2(word_add, $1, $2);
%*/
}
;
qwords : tQWORDS_BEG ' ' tSTRING_END
{
/*%%%*/
$$ = NEW_ZARRAY();
/*%
$$ = dispatch0(qwords_new);
%*/
}
| tQWORDS_BEG qword_list tSTRING_END
{
$$ = $2;
}
;
qword_list : /* none */
{
/*%%%*/
$$ = 0;
/*%
$$ = dispatch0(qwords_new);
%*/
}
| qword_list tSTRING_CONTENT ' '
{
/*%%%*/
$$ = list_append($1, $2);
/*%
$$ = dispatch2(qwords_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);
%*/
}
;
string_content : tSTRING_CONTENT
| tSTRING_DVAR
{
$<node>$ = lex_strterm;
lex_strterm = 0;
lex_state = EXPR_BEG;
}
string_dvar
{
/*%%%*/
lex_strterm = $<node>2;
$$ = NEW_EVSTR($3);
/*%
lex_strterm = $<node>2;
$$ = dispatch1(string_dvar, $3);
%*/
}
| tSTRING_DBEG
{
$<node>$ = lex_strterm;
lex_strterm = 0;
lex_state = EXPR_BEG;
COND_PUSH(0);
CMDARG_PUSH(0);
}
compstmt '}'
{
lex_strterm = $<node>2;
COND_LEXPOP();
CMDARG_LEXPOP();
/*%%%*/
if ($3) $3->flags &= ~NODE_NEWLINE;
$$ = new_evstr($3);
/*%
$$ = dispatch1(string_embexpr, $3);
%*/
}
;
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
{
/*%%%*/
lex_state = EXPR_END;
$$ = $2;
/*%
lex_state = EXPR_END;
$$ = dispatch1(symbol, $2);
%*/
}
;
sym : fname
| tIVAR
| tGVAR
| tCVAR
;
dsym : tSYMBEG xstring_contents tSTRING_END
{
/*%%%*/
lex_state = EXPR_END;
if (!($$ = $2)) {
yyerror("empty symbol literal");
}
else {
switch (nd_type($$)) {
case NODE_DSTR:
nd_set_type($$, NODE_DSYM);
break;
case NODE_STR:
if (strlen(RSTRING($$->nd_lit)->ptr) == RSTRING($$->nd_lit)->len) {
$$->nd_lit = ID2SYM(rb_intern(RSTRING($$->nd_lit)->ptr));
nd_set_type($$, NODE_LIT);
break;
}
/* fall through */
default:
$$ = NEW_NODE(NODE_DSYM, rb_str_new(0, 0), 1, NEW_LIST($$));
break;
}
}
/*%
lex_state = EXPR_END;
$$ = dispatch1(dyna_symbol, $2);
%*/
}
;
numeric : tINTEGER
| tFLOAT
| tUMINUS_NUM tINTEGER %prec tLOWEST
{
/*%%%*/
$$ = negate_lit($2);
/*%
$$ = dispatch2(unary, ripper_intern("-@"), $2);
%*/
}
| tUMINUS_NUM tFLOAT %prec tLOWEST
{
/*%%%*/
$$ = negate_lit($2);
/*%
$$ = dispatch2(unary, ripper_intern("-@"), $2);
%*/
}
;
variable : tIDENTIFIER
| tIVAR
| tGVAR
| tCONSTANT
| tCVAR
| kNIL {ifndef_ripper($$ = kNIL);}
| kSELF {ifndef_ripper($$ = kSELF);}
| kTRUE {ifndef_ripper($$ = kTRUE);}
| kFALSE {ifndef_ripper($$ = kFALSE);}
| k__FILE__ {ifndef_ripper($$ = k__FILE__);}
| k__LINE__ {ifndef_ripper($$ = k__LINE__);}
;
var_ref : variable
{
/*%%%*/
$$ = gettable($1);
/*%
$$ = dispatch1(var_ref, $1);
%*/
}
;
var_lhs : variable
{
/*%%%*/
$$ = assignable($1, 0);
/*%
$$ = dispatch1(var_field, $1);
%*/
}
;
backref : tNTH_REF
| tBACK_REF
;
superclass : term
{
/*%%%*/
$$ = 0;
/*%
$$ = Qnil;
%*/
}
| '<'
{
lex_state = EXPR_BEG;
}
expr_value term
{
$$ = $3;
}
| error term
{
/*%%%*/
yyerrok;
$$ = 0;
/*%
yyerrok;
$$ = Qnil;
%*/
}
;
f_arglist : '(' f_args rparen
{
/*%%%*/
$$ = $2;
lex_state = EXPR_BEG;
/*%
$$ = dispatch1(paren, $2);
lex_state = EXPR_BEG;
%*/
}
| f_args term
{
$$ = $1;
}
;
f_args : f_arg ',' f_optarg ',' f_rest_arg opt_f_block_arg
{
/*%%%*/
$$ = new_args($1, $3, $5, $6);
/*%
$$ = dispatch4(params, $1, $3, $5, escape_Qundef($6));
%*/
}
| f_arg ',' f_optarg opt_f_block_arg
{
/*%%%*/
$$ = new_args($1, $3, 0, $4);
/*%
$$ = dispatch4(params, $1, $3, Qnil, escape_Qundef($4));
%*/
}
| f_arg ',' f_rest_arg opt_f_block_arg
{
/*%%%*/
$$ = new_args($1, 0, $3, $4);
/*%
$$ = dispatch4(params, $1, Qnil, $3, escape_Qundef($4));
%*/
}
| f_arg opt_f_block_arg
{
/*%%%*/
$$ = new_args($1, 0, 0, $2);
/*%
$$ = dispatch4(params, $1, Qnil, Qnil, escape_Qundef($2));
%*/
}
| f_optarg ',' f_rest_arg opt_f_block_arg
{
/*%%%*/
$$ = new_args(0, $1, $3, $4);
/*%
$$ = dispatch4(params, Qnil, $1, $3, escape_Qundef($4));
%*/
}
| f_optarg opt_f_block_arg
{
/*%%%*/
$$ = new_args(0, $1, 0, $2);
/*%
$$ = dispatch4(params, Qnil, $1, Qnil, escape_Qundef($2));
%*/
}
| f_rest_arg opt_f_block_arg
{
/*%%%*/
$$ = new_args(0, 0, $1, $2);
/*%
$$ = dispatch4(params, Qnil, Qnil, $1, escape_Qundef($2));
%*/
}
| f_block_arg
{
/*%%%*/
$$ = new_args(0, 0, 0, $1);
/*%
$$ = dispatch4(params, Qnil, Qnil, Qnil, $1);
%*/
}
| /* none */
{
/*%%%*/
$$ = new_args(0, 0, 0, 0);
/*%
$$ = dispatch4(params, Qnil, Qnil, Qnil, Qnil);
%*/
}
;
f_norm_arg : tCONSTANT
{
/*%%%*/
yyerror("formal argument cannot be a constant");
/*%
$$ = dispatch1(param_error, $1);
%*/
}
| tIVAR
{
/*%%%*/
yyerror("formal argument cannot be an instance variable");
/*%
$$ = dispatch1(param_error, $1);
%*/
}
| tGVAR
{
/*%%%*/
yyerror("formal argument cannot be a global variable");
/*%
$$ = dispatch1(param_error, $1);
%*/
}
| tCVAR
{
/*%%%*/
yyerror("formal argument cannot be a class variable");
/*%
$$ = dispatch1(param_error, $1);
%*/
}
| tIDENTIFIER
{
/*%%%*/
if (!is_local_id($1))
yyerror("formal argument must be local variable");
if (dyna_in_block()) {
shadowing_lvar($1);
dyna_var($1);
}
else {
local_cnt($1);
}
$$ = $1;
/*%
$$ = $1;
%*/
}
;
f_arg : f_norm_arg
{
$$ = rb_ary_new3(1, ID2SYM($1));
}
| f_arg ',' f_norm_arg
{
$$ = $1;
if (rb_ary_includes($$, ID2SYM($3))) {
yyerror("duplicated argument name");
}
rb_ary_push($$, ID2SYM($3));
}
;
f_opt : tIDENTIFIER '=' arg_value
{
/*%%%*/
if (!is_local_id($1))
yyerror("formal argument must be local variable");
if (dyna_in_block()) {
shadowing_lvar($1);
dyna_var($1);
}
$$ = assignable($1, $3);
/*%
$$ = rb_assoc_new($1, $3);
%*/
}
;
f_optarg : f_opt
{
/*%%%*/
$$ = NEW_BLOCK($1);
$$->nd_end = $$;
/*%
$$ = rb_ary_new3(1, $1);
%*/
}
| f_optarg ',' f_opt
{
/*%%%*/
$$ = block_append($1, $3);
/*%
$$ = rb_ary_push($1, $3);
%*/
}
;
restarg_mark : '*'
| tSTAR
;
f_rest_arg : restarg_mark tIDENTIFIER
{
/*%%%*/
if (!is_local_id($2))
yyerror("rest argument must be local variable");
if (dyna_in_block()) {
shadowing_lvar($2);
dyna_var($2);
}
$$ = assignable($2, 0);
/*%
$$ = dispatch1(restparam, $2);
%*/
}
| restarg_mark
{
/*%%%*/
if (dyna_in_block()) {
$$ = NEW_DASGN_CURR(internal_id(), 0);
}
else {
$$ = NEW_NODE(NODE_LASGN,0,0,local_append(0));
}
/*%
$$ = dispatch1(restparam, 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");
$$ = dyna_in_block() ? assignable($2, 0) : NEW_BLOCK_ARG($2);
/*%
$$ = $2;
%*/
}
;
opt_f_block_arg : ',' f_block_arg
{
$$ = $2;
}
| none
;
singleton : var_ref
{
/*%%%*/
if (nd_type($1) == NODE_SELF) {
$$ = NEW_SELF();
}
else {
$$ = $1;
value_expr($$);
}
/*%
$$ = $1;
%*/
}
| '(' {lex_state = EXPR_BEG;} expr rparen
{
/*%%%*/
if ($3 == 0) {
yyerror("can't define singleton method for ().");
}
else {
switch (nd_type($3)) {
case NODE_STR:
case NODE_DSTR:
case NODE_XSTR:
case NODE_DXSTR:
case NODE_DREGX:
case NODE_LIT:
case NODE_ARRAY:
case NODE_ZARRAY:
yyerror("can't define singleton method for literals");
default:
value_expr($3);
break;
}
}
$$ = $3;
/*%
$$ = dispatch1(paren, $3);
%*/
}
;
assoc_list : none
| assocs trailer
{
$$ = $1;
}
| args trailer
{
/*%%%*/
if ($1->nd_alen%2 != 0) {
yyerror("odd number list for Hash");
}
$$ = $1;
/*%
$$ = dispatch1(assoclist_from_args, $1);
%*/
}
;
assocs : assoc
/*%c%*/
/*%c
{
$$ = rb_ary_new3(1, $1);
}
%*/
| assocs ',' assoc
{
/*%%%*/
$$ = list_concat($1, $3);
/*%
rb_ary_push($$, $3);
%*/
}
;
assoc : arg_value tASSOC arg_value
{
/*%%%*/
$$ = list_append(NEW_LIST($1), $3);
/*%
$$ = dispatch2(assoc_new, $1, $3);
%*/
}
| tLABEL arg_value
{
/*%%%*/
$$ = list_append(NEW_LIST(NEW_LIT(ID2SYM($1))), $2);
/*%
$$ = dispatch2(assoc_new, $1, $2);
%*/
}
;
operation : tIDENTIFIER
| tCONSTANT
| tFID
;
operation2 : tIDENTIFIER
| tCONSTANT
| tFID
| op
;
operation3 : tIDENTIFIER
| tFID
| op
;
dot_or_colon : '.'
/*%c%*/
/*%c
{ $$ = $<val>1; }
%*/
| tCOLON2
/*%c%*/
/*%c
{ $$ = $<val>1; }
%*/
;
opt_terms : /* none */
| terms
;
opt_nl : /* none */
| '\n'
;
rparen : opt_nl ')'
;
trailer : /* none */
| '\n'
| ','
;
term : ';' {yyerrok;}
| '\n'
;
terms : term
| terms ';' {yyerrok;}
;
none : /* none */
{
/*%%%*/
$$ = 0;
/*%
$$ = Qundef;
%*/
}
;
%%
# undef parser
# undef yylex
# undef yylval
# define yylval (*((YYSTYPE*)(parser->parser_yylval)))
#ifndef RIPPER
static VALUE rb_parser_s_new _((void));
#endif
static int parser_regx_options _((struct parser_params*));
static int parser_tokadd_string _((struct parser_params*,int,int,int,long*));
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 tokadd(c) parser_tokadd(parser, c)
# define read_escape() parser_read_escape(parser)
# define tokadd_escape(t) parser_tokadd_escape(parser, t)
# define regx_options() parser_regx_options(parser)
# define tokadd_string(f,t,p,n) parser_tokadd_string(parser,f,t,p,n)
# define parse_string(n) parser_parse_string(parser,n)
# 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)
#ifdef RIPPER
/* FIXME */
# define local_cnt(x) 3
# define local_id(x) 1
# define dyna_in_block() 1
#endif /* RIPPER */
#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_literal(x) yylval.node = NEW_LIT(x)
# define set_yylval_node(x) yylval.node = x
# define yylval_id() yylval.id
#else
# define set_yylval_str(x) x
# define set_yylval_num(x) x
# define set_yylval_id(x) x
# define set_yylval_literal(x) x
# define set_yylval_node(x) x
# define yylval_id() SYM2ID(yylval.val)
#endif
#ifdef RIPPER
#define ripper_flush(p) (p->tokp = p->parser_lex_p)
static void
ripper_dispatch_scan_event(parser, t)
struct parser_params *parser;
int t;
{
VALUE str;
if (lex_p < parser->tokp) rb_raise(rb_eRuntimeError, "lex_p < tokp");
if (lex_p == parser->tokp) return;
str = rb_str_new(parser->tokp, lex_p - parser->tokp);
yylval.val = ripper_dispatch1(parser, ripper_token2eventid(t), str);
ripper_flush(parser);
}
static void
ripper_dispatch_delayed_token(parser, t)
struct parser_params *parser;
int t;
{
int saved_line = ruby_sourceline;
char *saved_tokp = parser->tokp;
ruby_sourceline = parser->delayed_line;
parser->tokp = lex_pbeg + parser->delayed_col;
yylval.val = ripper_dispatch1(parser, ripper_token2eventid(t), parser->delayed);
parser->delayed = Qnil;
ruby_sourceline = saved_line;
parser->tokp = saved_tokp;
}
#endif /* RIPPER */
#include "regex.h"
#include "util.h"
/* We remove any previous definition of `SIGN_EXTEND_CHAR',
since ours (we hope) works properly with all combinations of
machines, compilers, `char' and `unsigned char' argument types.
(Per Bothner suggested the basic approach.) */
#undef SIGN_EXTEND_CHAR
#if __STDC__
# define SIGN_EXTEND_CHAR(c) ((signed char)(c))
#else /* not __STDC__ */
/* As in Harbison and Steele. */
# define SIGN_EXTEND_CHAR(c) ((((unsigned char)(c)) ^ 128) - 128)
#endif
#define is_identchar(c) (SIGN_EXTEND_CHAR(c)!=-1&&(ISALNUM(c) || (c) == '_' || ismbchar(c)))
static int
parser_yyerror(parser, msg)
struct parser_params *parser;
const char *msg;
{
#ifndef RIPPER
char *p, *pe, *buf;
int len, i;
rb_compile_error("%s", msg);
p = lex_p;
while (lex_pbeg <= p) {
if (*p == '\n') break;
p--;
}
p++;
pe = lex_p;
while (pe < lex_pend) {
if (*pe == '\n') break;
pe++;
}
len = pe - p;
if (len > 4) {
buf = ALLOCA_N(char, len+2);
MEMCPY(buf, p, char, len);
buf[len] = '\0';
rb_compile_error_append("%s", buf);
i = lex_p - p;
p = buf; pe = p + len;
while (p < pe) {
if (*p != '\t') *p = ' ';
p++;
}
buf[i] = '^';
buf[i+1] = '\0';
rb_compile_error_append("%s", buf);
}
#else
dispatch1(parse_error, rb_str_new2(msg));
#endif /* !RIPPER */
return 0;
}
static void parser_prepare _((struct parser_params *parser));
#ifndef RIPPER
static NODE*
yycompile(parser, f, line)
struct parser_params *parser;
char *f;
int line;
{
int n;
NODE *node = 0;
struct RVarmap *vp, *vars = ruby_dyna_vars;
const char *kcode_save;
if (!compile_for_eval && rb_safe_level() == 0 &&
rb_const_defined(rb_cObject, rb_intern("SCRIPT_LINES__"))) {
VALUE hash, fname;
hash = rb_const_get(rb_cObject, rb_intern("SCRIPT_LINES__"));
if (TYPE(hash) == T_HASH) {
fname = rb_str_new2(f);
ruby_debug_lines = rb_hash_aref(hash, fname);
if (NIL_P(ruby_debug_lines)) {
ruby_debug_lines = rb_ary_new();
rb_hash_aset(hash, fname, ruby_debug_lines);
}
}
if (line > 1) {
VALUE str = rb_str_new(0,0);
n = line - 1;
do {
rb_ary_push(ruby_debug_lines, str);
} while (--n);
}
}
kcode_save = rb_get_kcode();
ruby_current_node = 0;
ruby_sourcefile = rb_source_filename(f);
ruby_sourceline = line - 1;
parser_prepare(parser);
n = yyparse((void*)parser);
ruby_debug_lines = 0;
compile_for_eval = 0;
rb_set_kcode(kcode_save);
vp = ruby_dyna_vars;
ruby_dyna_vars = vars;
lex_strterm = 0;
while (vp && vp != vars) {
struct RVarmap *tmp = vp;
vp = vp->next;
rb_gc_force_recycle((VALUE)tmp);
}
if (ruby_eval_tree_begin) {
return NEW_PRELUDE(ruby_eval_tree_begin, ruby_eval_tree);
}
else {
return ruby_eval_tree;
}
}
#endif /* !RIPPER */
static VALUE lex_get_str _((struct parser_params *, VALUE));
static VALUE
lex_get_str(parser, s)
struct parser_params *parser;
VALUE s;
{
char *beg, *end, *pend;
beg = RSTRING(s)->ptr;
if (lex_gets_ptr) {
if (RSTRING(s)->len == lex_gets_ptr) return Qnil;
beg += lex_gets_ptr;
}
pend = RSTRING(s)->ptr + RSTRING(s)->len;
end = beg;
while (end < pend) {
if (*end++ == '\n') break;
}
lex_gets_ptr = end - RSTRING(s)->ptr;
return rb_str_new(beg, end - beg);
}
static VALUE
lex_getline(parser)
struct parser_params *parser;
{
VALUE line = (*parser->parser_lex_gets)(parser, parser->parser_lex_input);
#ifndef RIPPER
if (ruby_debug_lines && !NIL_P(line)) {
rb_ary_push(ruby_debug_lines, line);
}
#endif
return line;
}
#ifndef RIPPER
NODE*
rb_compile_string(f, s, line)
const char *f;
VALUE s;
int line;
{
VALUE volatile vparser = rb_parser_new();
return rb_parser_compile_string(vparser, f, s, line);
}
NODE*
rb_parser_compile_string(vparser, f, s, line)
volatile VALUE vparser;
const char *f;
VALUE s;
int line;
{
struct parser_params *parser;
Data_Get_Struct(vparser, struct parser_params, parser);
lex_gets = lex_get_str;
lex_gets_ptr = 0;
lex_input = s;
lex_pbeg = lex_p = lex_pend = 0;
compile_for_eval = ruby_in_eval;
return yycompile(parser, f, line);
}
NODE*
rb_compile_cstr(f, s, len, line)
const char *f, *s;
int len, line;
{
return rb_compile_string(f, rb_str_new(s, len), line);
}
NODE*
rb_parser_compile_cstr(vparser, f, s, len, line)
volatile VALUE vparser;
const char *f, *s;
int len, line;
{
return rb_parser_compile_string(vparser, f, rb_str_new(s, len), line);
}
static VALUE lex_io_gets _((struct parser_params *, VALUE));
static VALUE
lex_io_gets(parser, io)
struct parser_params *parser;
VALUE io;
{
return rb_io_gets(io);
}
NODE*
rb_compile_file(f, file, start)
const char *f;
VALUE file;
int start;
{
VALUE volatile vparser = rb_parser_new();
return rb_parser_compile_file(vparser, f, file, start);
}
NODE*
rb_parser_compile_file(vparser, f, file, start)
volatile VALUE vparser;
const char *f;
VALUE file;
int start;
{
struct parser_params *parser;
Data_Get_Struct(vparser, struct parser_params, parser);
lex_gets = lex_io_gets;
lex_input = file;
lex_pbeg = lex_p = lex_pend = 0;
return yycompile(parser, f, start);
}
#endif /* !RIPPER */
static inline int
parser_nextc(parser)
struct parser_params *parser;
{
int c;
if (lex_p == lex_pend) {
if (parser->eofp)
return -1;
if (lex_input) {
VALUE v = lex_getline(parser);
if (NIL_P(v)) {
parser->eofp = Qtrue;
return -1;
}
#ifdef RIPPER
if (parser->tokp < lex_pend) {
if (NIL_P(parser->delayed)) {
parser->delayed = rb_str_buf_new(1024);
rb_str_buf_cat(parser->delayed,
parser->tokp, lex_pend - parser->tokp);
parser->delayed_line = ruby_sourceline;
parser->delayed_col = 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(v)->ptr;
lex_pend = lex_p + RSTRING(v)->len;
#ifdef RIPPER
ripper_flush(parser);
#endif
lex_lastline = v;
}
else {
lex_lastline = 0;
return -1;
}
}
c = (unsigned char)*lex_p++;
if (c == '\r' && lex_p < lex_pend && *lex_p == '\n') {
lex_p++;
c = '\n';
}
return c;
}
static void
parser_pushback(parser, c)
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 lex_goto_eol(parser) (parser->parser_lex_p = parser->parser_lex_pend)
#define was_bol() (lex_p == lex_pbeg + 1)
#define peek(c) (lex_p != lex_pend && (c) == *lex_p)
#define tokfix() (tokenbuf[tokidx]='\0')
#define tok() tokenbuf
#define toklen() tokidx
#define toklast() (tokidx>0?tokenbuf[tokidx-1]:0)
static char*
parser_newtok(parser)
struct parser_params *parser;
{
tokidx = 0;
if (!tokenbuf) {
toksiz = 60;
tokenbuf = ALLOC_N(char, 60);
}
if (toksiz > 4096) {
toksiz = 60;
REALLOC_N(tokenbuf, char, 60);
}
return tokenbuf;
}
static void
parser_tokadd(parser, c)
struct parser_params *parser;
char c;
{
tokenbuf[tokidx++] = c;
if (tokidx >= toksiz) {
toksiz *= 2;
REALLOC_N(tokenbuf, char, toksiz);
}
}
static int
parser_read_escape(parser)
struct parser_params *parser;
{
int c;
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':
{
int numlen;
pushback(c);
c = scan_oct(lex_p, 3, &numlen);
lex_p += numlen;
}
return c;
case 'x': /* hex constant */
{
int numlen;
c = scan_hex(lex_p, 2, &numlen);
if (numlen == 0) {
yyerror("Invalid escape character syntax");
return 0;
}
lex_p += numlen;
}
return c;
case 'b': /* backspace */
return '\010';
case 's': /* space */
return ' ';
case 'M':
if ((c = nextc()) != '-') {
yyerror("Invalid escape character syntax");
pushback(c);
return '\0';
}
if ((c = nextc()) == '\\') {
return read_escape() | 0x80;
}
else if (c == -1) goto eof;
else {
return ((c & 0xff) | 0x80);
}
case 'C':
if ((c = nextc()) != '-') {
yyerror("Invalid escape character syntax");
pushback(c);
return '\0';
}
case 'c':
if ((c = nextc())== '\\') {
c = read_escape();
}
else if (c == '?')
return 0177;
else if (c == -1) goto eof;
return c & 0x9f;
eof:
case -1:
yyerror("Invalid escape character syntax");
return '\0';
default:
return c;
}
}
static int
parser_tokadd_escape(parser, term)
struct parser_params *parser;
int term;
{
int c;
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':
{
int i;
tokadd('\\');
tokadd(c);
for (i=0; i<2; i++) {
c = nextc();
if (c == -1) goto eof;
if (c < '0' || '7' < c) {
pushback(c);
break;
}
tokadd(c);
}
}
return 0;
case 'x': /* hex constant */
{
int numlen;
tokadd('\\');
tokadd(c);
scan_hex(lex_p, 2, &numlen);
if (numlen == 0) {
yyerror("Invalid escape character syntax");
return -1;
}
while (numlen--)
tokadd(nextc());
}
return 0;
case 'M':
if ((c = nextc()) != '-') {
yyerror("Invalid escape character syntax");
pushback(c);
return 0;
}
tokadd('\\'); tokadd('M'); tokadd('-');
goto escaped;
case 'C':
if ((c = nextc()) != '-') {
yyerror("Invalid escape character syntax");
pushback(c);
return 0;
}
tokadd('\\'); tokadd('C'); tokadd('-');
goto escaped;
case 'c':
tokadd('\\'); tokadd('c');
escaped:
if ((c = nextc()) == '\\') {
return tokadd_escape(term);
}
else if (c == -1) goto eof;
tokadd(c);
return 0;
eof:
case -1:
yyerror("Invalid escape character syntax");
return -1;
default:
if (c != '\\' || c != term)
tokadd('\\');
tokadd(c);
}
return 0;
}
static int
parser_regx_options(parser)
struct parser_params *parser;
{
char kcode = 0;
int options = 0;
int c;
newtok();
while (c = nextc(), ISALPHA(c)) {
switch (c) {
case 'i':
options |= ONIG_OPTION_IGNORECASE;
break;
case 'x':
options |= ONIG_OPTION_EXTEND;
break;
case 'm':
options |= ONIG_OPTION_MULTILINE;
break;
case 'o':
options |= RE_OPTION_ONCE;
break;
case 'n':
kcode = 16;
break;
case 'e':
kcode = 32;
break;
case 's':
kcode = 48;
break;
case 'u':
kcode = 64;
break;
default:
tokadd(c);
break;
}
}
pushback(c);
if (toklen()) {
tokfix();
compile_error(PARSER_ARG "unknown regexp option%s - %s",
toklen() > 1 ? "s" : "", tok());
}
return options | kcode;
}
#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
enum string_type {
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 void
dispose_string(str)
VALUE str;
{
xfree(RSTRING(str)->ptr);
rb_gc_force_recycle(str);
}
static int
parser_tokadd_string(parser, func, term, paren, nest)
struct parser_params *parser;
int func, term, paren;
long *nest;
{
int c;
unsigned char uc;
while ((c = nextc()) != -1) {
uc = (unsigned char)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 == '\\') {
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;
default:
if (func & STR_FUNC_REGEXP) {
pushback(c);
if (tokadd_escape(term) < 0)
return -1;
continue;
}
else if (func & STR_FUNC_EXPAND) {
pushback(c);
if (func & STR_FUNC_ESCAPE) tokadd('\\');
c = read_escape();
}
else if ((func & STR_FUNC_QWORDS) && ISSPACE(c)) {
/* ignore backslashed spaces in %w */
}
else if (c != term && !(paren && c == paren)) {
tokadd('\\');
}
}
}
else if (ismbchar(uc)) {
int i, len = mbclen(uc)-1;
for (i = 0; i < len; i++) {
tokadd(c);
c = nextc();
}
}
else if ((func & STR_FUNC_QWORDS) && ISSPACE(c)) {
pushback(c);
break;
}
if (!c && (func & STR_FUNC_SYMBOL)) {
func &= ~STR_FUNC_SYMBOL;
rb_compile_error(PARSER_ARG "symbol cannot contain '\\0'");
continue;
}
tokadd(c);
}
return c;
}
#define NEW_STRTERM0(func, term, paren) \
rb_node_newnode(NODE_STRTERM, (func), (term) | ((paren) << (CHAR_BIT * 2)), 0)
#ifndef RIPPER
# define NEW_STRTERM(func, term, paren) NEW_STRTERM0(func, term, paren)
#else
# define NEW_STRTERM(func, term, paren) ripper_new_strterm(parser, func, term, paren)
static NODE *
ripper_new_strterm(parser, func, term, paren)
struct parser_params *parser;
VALUE func, term, paren;
{
NODE *node = NEW_STRTERM0(func, term, paren);
nd_set_line(node, ruby_sourceline);
return node;
}
#endif
static int
parser_parse_string(parser, quote)
struct parser_params *parser;
NODE *quote;
{
int func = quote->nd_func;
int term = nd_term(quote);
int paren = nd_paren(quote);
int c, space = 0;
if (func == -1) 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->nd_func = -1;
return ' ';
}
if (!(func & STR_FUNC_REGEXP)) return tSTRING_END;
set_yylval_num(regx_options());
return tREGEXP_END;
}
if (space) {
pushback(c);
return ' ';
}
newtok();
if ((func & STR_FUNC_EXPAND) && c == '#') {
switch (c = nextc()) {
case '$':
case '@':
pushback(c);
return tSTRING_DVAR;
case '{':
return tSTRING_DBEG;
}
tokadd('#');
}
pushback(c);
if (tokadd_string(func, term, paren, &quote->nd_nest) == -1) {
ruby_sourceline = nd_line(quote);
rb_compile_error(PARSER_ARG "unterminated string meets end of file");
return tSTRING_END;
}
tokfix();
set_yylval_str(rb_str_new(tok(), toklen()));
return tSTRING_CONTENT;
}
static int
parser_heredoc_identifier(parser)
struct parser_params *parser;
{
int c = nextc(), term, func = 0, len;
unsigned int uc;
if (c == '-') {
c = nextc();
func = STR_FUNC_INDENT;
}
switch (c) {
case '\'':
func |= str_squote; goto quoted;
case '"':
func |= str_dquote; goto quoted;
case '`':
func |= str_xquote;
quoted:
newtok();
tokadd(func);
term = c;
while ((c = nextc()) != -1 && c != term) {
uc = (unsigned int)c;
len = mbclen(uc);
do {tokadd(c);} while (--len > 0 && (c = nextc()) != -1);
}
if (c == -1) {
rb_compile_error(PARSER_ARG "unterminated here document identifier");
return 0;
}
break;
default:
uc = (unsigned int)c;
if (!is_identchar(uc)) {
pushback(c);
if (func & STR_FUNC_INDENT) {
pushback('-');
}
return 0;
}
newtok();
term = '"';
tokadd(func |= str_dquote);
do {
uc = (unsigned int)c;
len = mbclen(uc);
do {tokadd(c);} while (--len > 0 && (c = nextc()) != -1);
} while ((c = nextc()) != -1 &&
(uc = (unsigned char)c, is_identchar(uc)));
pushback(c);
break;
}
tokfix();
#ifdef RIPPER
ripper_dispatch_scan_event(parser, tHEREDOC_BEG);
#endif
len = lex_p - lex_pbeg;
lex_goto_eol(parser);
lex_strterm = rb_node_newnode(NODE_HEREDOC,
rb_str_new(tok(), toklen()), /* nd_lit */
len, /* nd_nth */
lex_lastline); /* nd_orig */
nd_set_line(lex_strterm, ruby_sourceline);
#ifdef RIPPER
ripper_flush(parser);
#endif
return term == '`' ? tXSTRING_BEG : tSTRING_BEG;
}
static void
parser_heredoc_restore(parser, here)
struct parser_params *parser;
NODE *here;
{
VALUE line;
#ifdef RIPPER
if (!NIL_P(parser->delayed))
ripper_dispatch_delayed_token(parser, tSTRING_CONTENT);
lex_goto_eol(parser);
ripper_dispatch_scan_event(parser, tHEREDOC_END);
#endif
line = here->nd_orig;
lex_lastline = line;
lex_pbeg = RSTRING(line)->ptr;
lex_pend = lex_pbeg + RSTRING(line)->len;
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);
#ifdef RIPPER
ripper_flush(parser);
#endif
}
static int
parser_whole_match_p(parser, eos, len, indent)
struct parser_params *parser;
char *eos;
int len, indent;
{
char *p = lex_pbeg;
int n;
if (indent) {
while (*p && ISSPACE(*p)) p++;
}
n= lex_pend - (p + len);
if (n < 0 || (n > 0 && p[len] != '\n' && p[len] != '\r')) return Qfalse;
if (strncmp(eos, p, len) == 0) return Qtrue;
return Qfalse;
}
static int
parser_here_document(parser, here)
struct parser_params *parser;
NODE *here;
{
int c, func, indent = 0;
char *eos, *p, *pend;
long len;
VALUE str = 0;
eos = RSTRING(here->nd_lit)->ptr;
len = RSTRING(here->nd_lit)->len - 1;
indent = (func = *eos++) & STR_FUNC_INDENT;
if ((c = nextc()) == -1) {
error:
rb_compile_error(PARSER_ARG "can't find string \"%s\" anywhere before EOF", eos);
heredoc_restore(lex_strterm);
lex_strterm = 0;
return 0;
}
if (was_bol() && whole_match_p(eos, len, indent)) {
heredoc_restore(lex_strterm);
return tSTRING_END;
}
if (!(func & STR_FUNC_EXPAND)) {
do {
p = RSTRING(lex_lastline)->ptr;
pend = lex_pend;
if (pend > p) {
switch (pend[-1]) {
case '\n':
if (--pend == p || pend[-1] != '\r') {
pend++;
break;
}
case '\r':
--pend;
}
}
if (str)
rb_str_cat(str, p, pend - p);
else
str = rb_str_new(p, pend - p);
if (pend < lex_pend) rb_str_cat(str, "\n", 1);
lex_goto_eol(parser);
if (nextc() == -1) {
if (str) dispose_string(str);
goto error;
}
} while (!whole_match_p(eos, len, indent));
}
else {
newtok();
if (c == '#') {
switch (c = nextc()) {
case '$':
case '@':
pushback(c);
return tSTRING_DVAR;
case '{':
return tSTRING_DBEG;
}
tokadd('#');
}
do {
pushback(c);
if ((c = tokadd_string(func, '\n', 0, NULL)) == -1) goto error;
if (c != '\n') {
set_yylval_str(rb_str_new(tok(), toklen()));
return tSTRING_CONTENT;
}
tokadd(nextc());
if ((c = nextc()) == -1) goto error;
} while (!whole_match_p(eos, len, indent));
str = rb_str_new(tok(), toklen());
}
heredoc_restore(lex_strterm);
lex_strterm = NEW_STRTERM(-1, 0, 0);
set_yylval_str(str);
return tSTRING_CONTENT;
}
#include "lex.c"
#ifndef RIPPER
static void
arg_ambiguous()
{
rb_warning("ambiguous first argument; put parentheses or even spaces");
}
#else
static void
ripper_arg_ambiguous(parser)
struct parser_params *parser;
{
dispatch0(arg_ambiguous);
}
#define arg_ambiguous() ripper_arg_ambiguous(parser)
#endif
static int
lvar_defined_gen(parser, id)
struct parser_params *parser;
ID id;
{
#ifndef RIPPER
return (dyna_in_block() && rb_dvar_defined(id)) || local_id(id);
#else
return 0;
#endif
}
/* emacsen -*- hack */
#ifndef RIPPER
typedef void (*rb_pragma_setter_t) _((struct parser_params *parser, const char *name, const char *val));
static void pragma_encoding _((struct parser_params *, const char *, const char *));
static void
pragma_encoding(parser, name, val)
struct parser_params *parser;
const char *name, *val;
{
if (parser && parser->line_count != (parser->has_shebang ? 2 : 1))
return;
rb_set_kcode(val);
}
struct pragma {
const char *name;
rb_pragma_setter_t func;
};
static const struct pragma pragmas[] = {
{"coding", pragma_encoding},
};
#endif
static const char *
pragma_marker(str, len)
const char *str;
int len;
{
int 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_pragma(parser, str, len)
struct parser_params *parser;
const char *str;
int len;
{
VALUE name = 0, val = 0;
const char *beg, *end, *vbeg, *vend;
#define str_copy(_s, _p, _n) ((_s) \
? (rb_str_resize((_s), (_n)), \
MEMCPY(RSTRING(_s)->ptr, (_p), char, (_n)), (_s)) \
: ((_s) = rb_str_new((_p), (_n))))
if (len <= 7) return Qfalse;
if (!(beg = pragma_marker(str, len))) return Qfalse;
if (!(end = pragma_marker(beg, str + len - beg))) return Qfalse;
str = beg;
len = end - beg - 3;
/* %r"([^\\s\'\":;]+)\\s*:\\s*(\"(?:\\\\.|[^\"])*\"|[^\"\\s;]+)[\\s;]*" */
while (len > 0) {
#ifndef RIPPER
const struct pragma *p = pragmas;
#endif
int 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 != ':') 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 != '"' && !ISSPACE(*str); --len, str++);
vend = str;
}
while (len > 0 && (*str == ';' || ISSPACE(*str))) --len, str++;
n = end - beg;
str_copy(name, beg, n);
rb_funcall(name, rb_intern("downcase!"), 0);
#ifndef RIPPER
do {
if (strncmp(p->name, RSTRING(name)->ptr, n) == 0) {
str_copy(val, vbeg, vend - vbeg);
(*p->func)(parser, RSTRING(name)->ptr, RSTRING(val)->ptr);
break;
}
} while (++p < pragmas + sizeof(pragmas) / sizeof(*p));
#else
dispatch2(pragma, name, val);
#endif
}
return Qtrue;
}
static void
parser_prepare(parser)
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) {
rb_set_kcode("UTF-8");
lex_p += 2;
return;
}
break;
case EOF:
return;
}
pushback(c);
}
#define IS_ARG() (lex_state == EXPR_ARG || lex_state == EXPR_CMDARG)
#define IS_BEG() (lex_state == EXPR_BEG || lex_state == EXPR_MID || lex_state == EXPR_VALUE || lex_state == EXPR_CLASS)
static int
parser_yylex(parser)
struct parser_params *parser;
{
register int c;
int space_seen = 0;
int cmd_state;
unsigned char uc;
#ifdef RIPPER
int fallthru = Qfalse;
#endif
if (lex_strterm) {
int token;
if (nd_type(lex_strterm) == NODE_HEREDOC) {
token = here_document(lex_strterm);
if (token == tSTRING_END) {
lex_strterm = 0;
lex_state = EXPR_END;
}
}
else {
token = parse_string(lex_strterm);
if (token == tSTRING_END || token == tREGEXP_END) {
rb_gc_force_recycle((VALUE)lex_strterm);
lex_strterm = 0;
lex_state = EXPR_END;
}
}
return token;
}
cmd_state = command_start;
command_start = Qfalse;
retry:
#ifdef RIPPER
while ((c = nextc())) {
switch (c) {
case ' ': case '\t': case '\f': case '\r':
case '\13': /* '\v' */
space_seen++;
break;
default:
goto outofloop;
}
}
outofloop:
pushback(c);
ripper_dispatch_scan_event(parser, tSP);
#endif
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++;
goto retry;
case '#': /* it's a comment */
if (!parser->has_shebang || parser->line_count != 1) {
/* no pragma in shebang line */
parser_pragma(parser, lex_p, lex_pend - lex_p);
}
lex_p = lex_pend;
#ifdef RIPPER
ripper_dispatch_scan_event(parser, tCOMMENT);
fallthru = Qtrue;
#endif
/* fall through */
case '\n':
switch (lex_state) {
case EXPR_BEG:
case EXPR_FNAME:
case EXPR_DOT:
case EXPR_CLASS:
case EXPR_VALUE:
#ifdef RIPPER
if (!fallthru) {
ripper_dispatch_scan_event(parser, tIGNORED_NL);
}
fallthru = Qfalse;
#endif
goto retry;
default:
break;
}
command_start = Qtrue;
lex_state = EXPR_BEG;
return '\n';
case '*':
if ((c = nextc()) == '*') {
if ((c = nextc()) == '=') {
set_yylval_id(tPOW);
lex_state = EXPR_BEG;
return tOP_ASGN;
}
pushback(c);
c = tPOW;
}
else {
if (c == '=') {
set_yylval_id('*');
lex_state = EXPR_BEG;
return tOP_ASGN;
}
pushback(c);
if (IS_ARG() && space_seen && !ISSPACE(c)){
rb_warning0("`*' interpreted as argument prefix");
c = tSTAR;
}
else if (IS_BEG()) {
c = tSTAR;
}
else {
c = '*';
}
}
switch (lex_state) {
case EXPR_FNAME: case EXPR_DOT:
lex_state = EXPR_ARG; break;
default:
lex_state = EXPR_BEG; break;
}
return c;
case '!':
lex_state = EXPR_BEG;
if ((c = nextc()) == '=') {
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])) {
#ifdef RIPPER
int first_p = Qtrue;
lex_goto_eol(parser);
ripper_dispatch_scan_event(parser, tEMBDOC_BEG);
#endif
for (;;) {
lex_goto_eol(parser);
#ifdef RIPPER
if (!first_p) {
ripper_dispatch_scan_event(parser, tEMBDOC);
}
first_p = Qfalse;
#endif
c = nextc();
if (c == -1) {
rb_compile_error(PARSER_ARG "embedded document meets end of file");
return 0;
}
if (c != '=') continue;
if (strncmp(lex_p, "end", 3) == 0 &&
(lex_p + 3 == lex_pend || ISSPACE(lex_p[3]))) {
break;
}
}
lex_goto_eol(parser);
#ifdef RIPPER
ripper_dispatch_scan_event(parser, tEMBDOC_END);
#endif
goto retry;
}
}
switch (lex_state) {
case EXPR_FNAME: case EXPR_DOT:
lex_state = EXPR_ARG; break;
default:
lex_state = EXPR_BEG; break;
}
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 '<':
c = nextc();
if (c == '<' &&
lex_state != EXPR_END &&
lex_state != EXPR_END2 &&
lex_state != EXPR_DOT &&
lex_state != EXPR_ENDARG &&
lex_state != EXPR_CLASS &&
(!IS_ARG() || space_seen)) {
int token = heredoc_identifier();
if (token) return token;
}
switch (lex_state) {
case EXPR_FNAME: case EXPR_DOT:
lex_state = EXPR_ARG; break;
default:
lex_state = EXPR_BEG; break;
}
if (c == '=') {
if ((c = nextc()) == '>') {
return tCMP;
}
pushback(c);
return tLEQ;
}
if (c == '<') {
if ((c = nextc()) == '=') {
set_yylval_id(tLSHFT);
lex_state = EXPR_BEG;
return tOP_ASGN;
}
pushback(c);
return tLSHFT;
}
pushback(c);
return '<';
case '>':
switch (lex_state) {
case EXPR_FNAME: case EXPR_DOT:
lex_state = EXPR_ARG; break;
default:
lex_state = EXPR_BEG; break;
}
if ((c = nextc()) == '=') {
return tGEQ;
}
if (c == '>') {
if ((c = nextc()) == '=') {
set_yylval_id(tRSHFT);
lex_state = EXPR_BEG;
return tOP_ASGN;
}
pushback(c);
return tRSHFT;
}
pushback(c);
return '>';
case '"':
lex_strterm = NEW_STRTERM(str_dquote, '"', 0);
return tSTRING_BEG;
case '`':
if (lex_state == EXPR_FNAME) {
lex_state = EXPR_END;
return c;
}
if (lex_state == EXPR_DOT) {
if (cmd_state)
lex_state = EXPR_CMDARG;
else
lex_state = EXPR_ARG;
return c;
}
lex_strterm = NEW_STRTERM(str_xquote, '`', 0);
return tXSTRING_BEG;
case '\'':
lex_strterm = NEW_STRTERM(str_squote, '\'', 0);
return tSTRING_BEG;
case '?':
if (lex_state == EXPR_END ||
lex_state == EXPR_END2 ||
lex_state == EXPR_ENDARG) {
lex_state = EXPR_VALUE;
return '?';
}
c = nextc();
if (c == -1) {
rb_compile_error(PARSER_ARG "incomplete character syntax");
return 0;
}
uc = (unsigned char)c;
if (ISSPACE(c)){
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_warnI("invalid character syntax; use ?\\%c", c2);
}
}
ternary:
pushback(c);
lex_state = EXPR_VALUE;
return '?';
}
else if (ismbchar(uc)) {
rb_warnI("multibyte character literal not supported yet; use ?\\%.3o", c);
goto ternary;
}
else if ((ISALNUM(c) || c == '_') && lex_p < lex_pend && is_identchar(*lex_p)) {
goto ternary;
}
else if (c == '\\') {
c = read_escape();
}
c &= 0xff;
lex_state = EXPR_END;
set_yylval_literal(INT2FIX(c));
return tINTEGER;
case '&':
if ((c = nextc()) == '&') {
lex_state = EXPR_BEG;
if ((c = nextc()) == '=') {
set_yylval_id(tANDOP);
lex_state = EXPR_BEG;
return tOP_ASGN;
}
pushback(c);
return tANDOP;
}
else if (c == '=') {
set_yylval_id('&');
lex_state = EXPR_BEG;
return tOP_ASGN;
}
pushback(c);
if (IS_ARG() && space_seen && !ISSPACE(c)){
rb_warning0("`&' interpreted as argument prefix");
c = tAMPER;
}
else if (IS_BEG()) {
c = tAMPER;
}
else {
c = '&';
}
switch (lex_state) {
case EXPR_FNAME: case EXPR_DOT:
lex_state = EXPR_ARG; break;
default:
lex_state = EXPR_BEG;
}
return c;
case '|':
if ((c = nextc()) == '|') {
lex_state = EXPR_BEG;
if ((c = nextc()) == '=') {
set_yylval_id(tOROP);
lex_state = EXPR_BEG;
return tOP_ASGN;
}
pushback(c);
return tOROP;
}
if (c == '=') {
set_yylval_id('|');
lex_state = EXPR_BEG;
return tOP_ASGN;
}
if (lex_state == EXPR_FNAME || lex_state == EXPR_DOT) {
lex_state = EXPR_ARG;
}
else {
lex_state = EXPR_BEG;
}
pushback(c);
return '|';
case '+':
c = nextc();
if (lex_state == EXPR_FNAME || lex_state == EXPR_DOT) {
lex_state = EXPR_ARG;
if (c == '@') {
return tUPLUS;
}
pushback(c);
return '+';
}
if (c == '=') {
set_yylval_id('+');
lex_state = EXPR_BEG;
return tOP_ASGN;
}
if (IS_BEG() ||
(IS_ARG() && space_seen && !ISSPACE(c))) {
if (IS_ARG()) arg_ambiguous();
lex_state = EXPR_BEG;
pushback(c);
if (ISDIGIT(c)) {
c = '+';
goto start_num;
}
return tUPLUS;
}
lex_state = EXPR_BEG;
pushback(c);
return '+';
case '-':
c = nextc();
if (lex_state == EXPR_FNAME || lex_state == EXPR_DOT) {
lex_state = EXPR_ARG;
if (c == '@') {
return tUMINUS;
}
pushback(c);
return '-';
}
if (c == '=') {
set_yylval_id('-');
lex_state = EXPR_BEG;
return tOP_ASGN;
}
if (c == '>') {
enum lex_state_e state = lex_state;
lex_state = EXPR_ARG;
switch (state) {
case EXPR_CMDARG:
case EXPR_ENDARG:
case EXPR_ARG:
case EXPR_END:
return tLAMBDA_ARG;
default:
return tLAMBDA;
}
}
if (IS_BEG() ||
(IS_ARG() && space_seen && !ISSPACE(c))) {
if (IS_ARG()) arg_ambiguous();
lex_state = EXPR_BEG;
pushback(c);
if (ISDIGIT(c)) {
return tUMINUS_NUM;
}
return tUMINUS;
}
lex_state = EXPR_BEG;
pushback(c);
return '-';
case '.':
lex_state = EXPR_BEG;
if ((c = nextc()) == '.') {
if ((c = nextc()) == '.') {
return tDOT3;
}
pushback(c);
return tDOT2;
}
pushback(c);
if (ISDIGIT(c)) {
yyerror("no .<digit> floating literal anymore; put 0 before dot");
}
lex_state = EXPR_DOT;
return '.';
start_num:
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
{
int is_float, seen_point, seen_e, nondigit;
is_float = seen_point = seen_e = nondigit = 0;
lex_state = EXPR_END;
newtok();
if (c == '-' || c == '+') {
tokadd(c);
c = nextc();
}
if (c == '0') {
int start = toklen();
c = nextc();
if (c == 'x' || c == 'X') {
/* hexadecimal */
c = nextc();
if (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) {
yyerror("numeric literal without digits");
}
else if (nondigit) goto trailing_uc;
set_yylval_literal(rb_cstr_to_inum(tok(), 16, Qfalse));
return tINTEGER;
}
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) {
yyerror("numeric literal without digits");
}
else if (nondigit) goto trailing_uc;
set_yylval_literal(rb_cstr_to_inum(tok(), 2, Qfalse));
return tINTEGER;
}
if (c == 'd' || c == 'D') {
/* decimal */
c = nextc();
if (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) {
yyerror("numeric literal without digits");
}
else if (nondigit) goto trailing_uc;
set_yylval_literal(rb_cstr_to_inum(tok(), 10, Qfalse));
return tINTEGER;
}
if (c == '_') {
/* 0_0 */
goto octal_number;
}
if (c == 'o' || c == 'O') {
/* prefixed octal */
c = nextc();
if (c == '_') {
yyerror("numeric literal without digits");
}
}
if (c >= '0' && c <= '7') {
/* octal */
octal_number:
do {
if (c == '_') {
if (nondigit) break;
nondigit = c;
continue;
}
if (c < '0' || c > '7') break;
nondigit = 0;
tokadd(c);
} while ((c = nextc()) != -1);
if (toklen() > start) {
pushback(c);
tokfix();
if (nondigit) goto trailing_uc;
set_yylval_literal(rb_cstr_to_inum(tok(), 8, Qfalse));
return tINTEGER;
}
if (nondigit) {
pushback(c);
goto trailing_uc;
}
}
if (c > '7' && c <= '9') {
yyerror("Illegal octal digit");
}
else if (c == '.' || c == 'e' || c == 'E') {
tokadd('0');
}
else {
pushback(c);
set_yylval_literal(INT2FIX(0));
return tINTEGER;
}
}
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 (!ISDIGIT(c0)) {
pushback(c0);
goto decode_num;
}
c = c0;
}
tokadd('.');
tokadd(c);
is_float++;
seen_point++;
nondigit = 0;
break;
case 'e':
case 'E':
if (nondigit) {
pushback(c);
c = nondigit;
goto decode_num;
}
if (seen_e) {
goto decode_num;
}
tokadd(c);
seen_e++;
is_float++;
nondigit = c;
c = nextc();
if (c != '-' && c != '+') continue;
tokadd(c);
nondigit = c;
break;
case '_': /* `_' in number just ignored */
if (nondigit) goto decode_num;
nondigit = c;
break;
default:
goto decode_num;
}
c = nextc();
}
decode_num:
pushback(c);
tokfix();
if (nondigit) {
char tmp[30];
trailing_uc:
sprintf(tmp, "trailing `%c' in number", nondigit);
yyerror(tmp);
}
if (is_float) {
double d = strtod(tok(), 0);
if (errno == ERANGE) {
rb_warnS("Float %s out of range", tok());
errno = 0;
}
set_yylval_literal(rb_float_new(d));
return tFLOAT;
}
set_yylval_literal(rb_cstr_to_inum(tok(), 10, Qfalse));
return tINTEGER;
}
case ')':
paren_nest--;
case ']':
case '}':
COND_LEXPOP();
CMDARG_LEXPOP();
lex_state = EXPR_END;
return c;
case ':':
c = nextc();
if (c == ':') {
if (IS_BEG() ||
lex_state == EXPR_CLASS || (IS_ARG() && space_seen)) {
lex_state = EXPR_BEG;
return tCOLON3;
}
lex_state = EXPR_DOT;
return tCOLON2;
}
if (lex_state == EXPR_END || lex_state == EXPR_END2 ||
lex_state == EXPR_ENDARG || ISSPACE(c)) {
pushback(c);
lex_state = EXPR_BEG;
return ':';
}
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;
}
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('/');
lex_state = EXPR_BEG;
return tOP_ASGN;
}
pushback(c);
if (IS_ARG() && space_seen) {
if (!ISSPACE(c)) {
arg_ambiguous();
lex_strterm = NEW_STRTERM(str_regexp, '/', 0);
return tREGEXP_BEG;
}
}
switch (lex_state) {
case EXPR_FNAME: case EXPR_DOT:
lex_state = EXPR_ARG; break;
default:
lex_state = EXPR_BEG; break;
}
return '/';
case '^':
if ((c = nextc()) == '=') {
set_yylval_id('^');
lex_state = EXPR_BEG;
return tOP_ASGN;
}
switch (lex_state) {
case EXPR_FNAME: case EXPR_DOT:
lex_state = EXPR_ARG; break;
default:
lex_state = EXPR_BEG; break;
}
pushback(c);
return '^';
case ';':
if (lex_state != EXPR_END2 && peek(';')) {
lex_state = EXPR_END2;
return kEND;
}
lex_state = EXPR_BEG;
command_start = Qtrue;
return ';';
case ',':
lex_state = EXPR_BEG;
return ',';
case '~':
if (lex_state == EXPR_FNAME || lex_state == EXPR_DOT) {
if ((c = nextc()) != '@') {
pushback(c);
}
}
switch (lex_state) {
case EXPR_FNAME: case EXPR_DOT:
lex_state = EXPR_ARG; break;
default:
lex_state = EXPR_BEG; break;
}
return '~';
case '(':
if (IS_BEG()) {
c = tLPAREN;
}
else if (space_seen) {
if (lex_state == EXPR_CMDARG) {
c = tLPAREN_ARG;
}
else if (lex_state == EXPR_ARG) {
rb_warning0("don't put space before argument parentheses");
c = '(';
}
}
paren_nest++;
COND_PUSH(0);
CMDARG_PUSH(0);
lex_state = EXPR_BEG;
return c;
case '[':
if (lex_state == EXPR_FNAME || lex_state == EXPR_DOT) {
lex_state = EXPR_ARG;
if ((c = nextc()) == ']') {
if ((c = nextc()) == '=') {
return tASET;
}
pushback(c);
return tAREF;
}
pushback(c);
return '[';
}
else if (IS_BEG()) {
c = tLBRACK;
}
else if (IS_ARG() && space_seen) {
c = tLBRACK;
}
lex_state = EXPR_BEG;
COND_PUSH(0);
CMDARG_PUSH(0);
return c;
case '{':
if (lpar_beg && lpar_beg == paren_nest) {
lex_state = EXPR_BEG;
lpar_beg = 0;
--paren_nest;
return tLAMBEG;
}
if (IS_ARG() || lex_state == EXPR_END || lex_state == EXPR_END2)
c = '{'; /* block (primary) */
else if (lex_state == EXPR_ENDARG)
c = tLBRACE_ARG; /* block (expr) */
else
c = tLBRACE; /* hash */
COND_PUSH(0);
CMDARG_PUSH(0);
lex_state = EXPR_BEG;
return c;
case '\\':
c = nextc();
if (c == '\n') {
space_seen = 1;
#ifdef RIPPER
ripper_dispatch_scan_event(parser, tSP);
#endif
goto retry; /* skip \\n */
}
pushback(c);
return '\\';
case '%':
if (IS_BEG()) {
int term;
int paren;
c = nextc();
quotation:
if (!ISALNUM(c)) {
term = c;
c = 'Q';
}
else {
term = nextc();
uc = (unsigned char)c;
if (ISALNUM(term) || ismbchar(uc)) {
yyerror("unknown type of %string");
return 0;
}
}
if (c == -1 || term == -1) {
rb_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_dquote | STR_FUNC_QWORDS, term, paren);
do {c = nextc();} while (ISSPACE(c));
pushback(c);
return tWORDS_BEG;
case 'w':
lex_strterm = NEW_STRTERM(str_squote | STR_FUNC_QWORDS, term, paren);
do {c = nextc();} while (ISSPACE(c));
pushback(c);
return tQWORDS_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);
lex_state = EXPR_FNAME;
return tSYMBEG;
default:
yyerror("unknown type of %string");
return 0;
}
}
if ((c = nextc()) == '=') {
set_yylval_id('%');
lex_state = EXPR_BEG;
return tOP_ASGN;
}
if (IS_ARG() && space_seen && !ISSPACE(c)) {
goto quotation;
}
switch (lex_state) {
case EXPR_FNAME: case EXPR_DOT:
lex_state = EXPR_ARG; break;
default:
lex_state = EXPR_BEG; break;
}
pushback(c);
return '%';
case '$':
lex_state = EXPR_END;
newtok();
c = nextc();
switch (c) {
case '_': /* $_: last read line string */
c = nextc();
uc = (unsigned char)c;
if (is_identchar(uc)) {
tokadd('$');
tokadd('_');
break;
}
pushback(c);
c = '_';
/* fall through */
case '~': /* $~: match-data */
local_cnt(c);
/* fall through */
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);
tokfix();
set_yylval_id(rb_intern(tok()));
return tGVAR;
case '-':
tokadd('$');
tokadd(c);
c = nextc();
tokadd(c);
tokfix();
set_yylval_id(rb_intern(tok()));
if (!is_global_id(yylval_id())) {
rb_compile_error(PARSER_ARG "invalid global variable `%s'", rb_id2name(yylval.id));
return 0;
}
return tGVAR;
case '&': /* $&: last match */
case '`': /* $`: string before last match */
case '\'': /* $': string after last match */
case '+': /* $+: string matches last paren. */
set_yylval_node(NEW_BACK_REF(c));
return tBACK_REF;
case '1': case '2': case '3':
case '4': case '5': case '6':
case '7': case '8': case '9':
tokadd('$');
do {
tokadd(c);
c = nextc();
} while (ISDIGIT(c));
pushback(c);
tokfix();
set_yylval_node(NEW_NTH_REF(atoi(tok()+1)));
return tNTH_REF;
default:
uc = (unsigned char)c;
if (!is_identchar(uc)) {
pushback(c);
return '$';
}
case '0':
tokadd('$');
}
break;
case '@':
c = nextc();
newtok();
tokadd('@');
if (c == '@') {
tokadd('@');
c = nextc();
}
if (ISDIGIT(c)) {
if (tokidx == 1) {
rb_compile_error(PARSER_ARG "`@%c' is not allowed as an instance variable name", c);
}
else {
rb_compile_error(PARSER_ARG "`@@%c' is not allowed as a class variable name", c);
}
}
uc = (unsigned char)c;
if (!is_identchar(uc)) {
pushback(c);
return '@';
}
break;
case '_':
if (was_bol() && whole_match_p("__END__", 7, 0)) {
ruby__end__seen = 1;
lex_lastline = 0;
#ifndef RIPPER
return -1;
#else
lex_goto_eol(parser);
ripper_dispatch_scan_event(parser, k__END__);
return 0;
#endif
}
newtok();
break;
default:
uc = (unsigned char)c;
if (!is_identchar(uc)) {
rb_compile_error(PARSER_ARG "Invalid char `\\%03o' in expression", c);
goto retry;
}
newtok();
break;
}
uc = (unsigned char)c;
do {
tokadd(c);
if (ismbchar(uc)) {
int i, len = mbclen(uc)-1;
for (i = 0; i < len; i++) {
c = nextc();
tokadd(c);
}
}
c = nextc();
uc = (unsigned char)c;
} while (is_identchar(uc));
if ((c == '!' || c == '?') && is_identchar(tok()[0]) && !peek('=')) {
tokadd(c);
}
else {
pushback(c);
}
tokfix();
{
int result = 0;
enum lex_state_e last_state = lex_state;
switch (tok()[0]) {
case '$':
lex_state = EXPR_END;
result = tGVAR;
break;
case '@':
lex_state = EXPR_END;
if (tok()[1] == '@')
result = tCVAR;
else
result = tIVAR;
break;
default:
if (toklast() == '!' || toklast() == '?') {
result = tFID;
}
else {
if (lex_state == EXPR_FNAME) {
if ((c = nextc()) == '=' && !peek('~') && !peek('>') &&
(!peek('=') || (lex_p + 1 < lex_pend && lex_p[1] == '>'))) {
result = tIDENTIFIER;
tokadd(c);
tokfix();
}
else {
pushback(c);
}
}
if (result == 0 && ISUPPER(tok()[0])) {
result = tCONSTANT;
}
else {
result = tIDENTIFIER;
}
}
if (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;
lex_state = kw->state;
if (state == EXPR_FNAME) {
set_yylval_id(rb_intern(kw->name));
}
if (kw->id[0] == kDO) {
if (lpar_beg && lpar_beg == paren_nest) {
lpar_beg = 0;
--paren_nest;
return kDO_LAMBDA;
}
if (COND_P()) return kDO_COND;
if (CMDARG_P() && state != EXPR_CMDARG)
return kDO_BLOCK;
if (state == EXPR_ENDARG || state == EXPR_BEG)
return kDO_BLOCK;
return kDO;
}
if (state == EXPR_BEG || state == EXPR_VALUE)
return kw->id[0];
else {
if (kw->id[0] != kw->id[1])
lex_state = EXPR_BEG;
return kw->id[1];
}
}
}
if ((lex_state == EXPR_BEG && !cmd_state) ||
lex_state == EXPR_ARG ||
lex_state == EXPR_CMDARG) {
if (peek(':') && !(lex_p + 1 < lex_pend && lex_p[1] == ':')) {
lex_state = EXPR_BEG;
nextc();
set_yylval_id(rb_intern(tok()));
return tLABEL;
}
}
if (IS_BEG() ||
lex_state == EXPR_DOT ||
IS_ARG()) {
if (cmd_state) {
lex_state = EXPR_CMDARG;
}
else {
lex_state = EXPR_ARG;
}
}
else {
lex_state = EXPR_END;
}
}
{
ID ident = rb_intern(tok());
set_yylval_id(ident);
if (last_state != EXPR_DOT && is_local_id(ident) && lvar_defined(ident)) {
lex_state = EXPR_END;
}
}
return result;
}
}
#if YYPURE
static int
yylex(lval, p)
void *lval, *p;
#else
yylex(p)
void *p;
#endif
{
struct parser_params *parser = (struct parser_params*)p;
int t;
#if YYPURE
parser->parser_yylval = (union tmpyystype*)lval;
parser->parser_yylval->val = Qundef;
#endif
t = parser_yylex(parser);
#ifdef RIPPER
if (!NIL_P(parser->delayed)) {
ripper_dispatch_delayed_token(parser, t);
return t;
}
if (t != 0)
ripper_dispatch_scan_event(parser, t);
#endif
return t;
}
#ifndef RIPPER
NODE*
rb_node_newnode(type, a0, a1, a2)
enum node_type type;
VALUE a0, a1, a2;
{
NODE *n = (NODE*)rb_newobj();
n->flags |= T_NODE;
nd_set_type(n, type);
nd_set_line(n, ruby_sourceline);
n->nd_file = ruby_sourcefile;
n->u1.value = a0;
n->u2.value = a1;
n->u3.value = a2;
return n;
}
static enum node_type
nodetype(node) /* for debug */
NODE *node;
{
return (enum node_type)nd_type(node);
}
static int
nodeline(node)
NODE *node;
{
return nd_line(node);
}
static NODE*
newline_node(node)
NODE *node;
{
if (node) {
node->flags |= NODE_NEWLINE;
}
return node;
}
static void
fixpos(node, orig)
NODE *node, *orig;
{
if (!node) return;
if (!orig) return;
if (orig == (NODE*)1) return;
node->nd_file = orig->nd_file;
nd_set_line(node, nd_line(orig));
}
static void
parser_warning(node, mesg)
NODE *node;
const char *mesg;
{
int line = ruby_sourceline;
ruby_sourceline = nd_line(node);
rb_warning(mesg);
ruby_sourceline = line;
}
static void
parser_warn(node, mesg)
NODE *node;
const char *mesg;
{
int line = ruby_sourceline;
ruby_sourceline = nd_line(node);
rb_warn(mesg);
ruby_sourceline = line;
}
static NODE*
block_append(head, tail)
NODE *head, *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(nd, "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(list, item)
NODE *list, *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(head, tail)
NODE *head, *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;
}
/* concat two string literals */
static NODE *
literal_concat(head, tail)
NODE *head, *tail;
{
enum node_type htype;
if (!head) return tail;
if (!tail) return head;
htype = nd_type(head);
if (htype == NODE_EVSTR) {
NODE *node = NEW_DSTR(rb_str_new(0, 0));
head = list_append(node, head);
}
switch (nd_type(tail)) {
case NODE_STR:
if (htype == NODE_STR) {
rb_str_concat(head->nd_lit, tail->nd_lit);
rb_gc_force_recycle((VALUE)tail);
}
else {
list_append(head, tail);
}
break;
case NODE_DSTR:
if (htype == NODE_STR) {
rb_str_concat(head->nd_lit, tail->nd_lit);
tail->nd_lit = head->nd_lit;
rb_gc_force_recycle((VALUE)head);
head = tail;
}
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(node)
NODE *node;
{
if (nd_type(node) == NODE_EVSTR) {
node = list_append(NEW_DSTR(rb_str_new(0, 0)), node);
}
return node;
}
static NODE *
new_evstr(node)
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_op_gen(parser, recv, id, narg, arg1)
struct parser_params *parser;
NODE *recv;
ID id;
int narg;
NODE *arg1;
{
value_expr(arg1);
if (narg == 1) {
value_expr(arg1);
arg1 = NEW_LIST(arg1);
}
else {
arg1 = 0;
}
return NEW_CALL(recv, id, arg1);
}
static NODE*
match_op_gen(parser, node1, node2)
struct parser_params *parser;
NODE *node1;
NODE *node2;
{
local_cnt('~');
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 (TYPE(node1->nd_lit) == T_REGEXP) {
return NEW_MATCH2(node1, node2);
}
}
}
if (node2) {
switch (nd_type(node2)) {
case NODE_DREGX:
case NODE_DREGX_ONCE:
return NEW_MATCH3(node2, node1);
case NODE_LIT:
if (TYPE(node2->nd_lit) == T_REGEXP) {
return NEW_MATCH3(node2, node1);
}
}
}
return NEW_CALL(node1, tMATCH, NEW_LIST(node2));
}
static NODE*
gettable_gen(parser, id)
struct parser_params *parser;
ID id;
{
if (id == kSELF) {
return NEW_SELF();
}
else if (id == kNIL) {
return NEW_NIL();
}
else if (id == kTRUE) {
return NEW_TRUE();
}
else if (id == kFALSE) {
return NEW_FALSE();
}
else if (id == k__FILE__) {
return NEW_STR(rb_str_new2(ruby_sourcefile));
}
else if (id == k__LINE__) {
return NEW_LIT(INT2FIX(ruby_sourceline));
}
else if (is_local_id(id)) {
if (dyna_in_block() && rb_dvar_defined(id)) return NEW_DVAR(id);
if (local_id(id)) return NEW_LVAR(id);
/* method call without arguments */
dyna_check(id);
return NEW_VCALL(id);
}
else if (is_global_id(id)) {
return NEW_GVAR(id);
}
else if (is_instance_id(id)) {
return NEW_IVAR(id);
}
else if (is_const_id(id)) {
return NEW_CONST(id);
}
else if (is_class_id(id)) {
return NEW_CVAR(id);
}
rb_compile_error("identifier %s is not valid", rb_id2name(id));
return 0;
}
static NODE*
assignable_gen(parser, id, val)
struct parser_params *parser;
ID id;
NODE *val;
{
value_expr(val);
if (id == kSELF) {
yyerror("Can't change the value of self");
}
else if (id == kNIL) {
yyerror("Can't assign to nil");
}
else if (id == kTRUE) {
yyerror("Can't assign to true");
}
else if (id == kFALSE) {
yyerror("Can't assign to false");
}
else if (id == k__FILE__) {
yyerror("Can't assign to __FILE__");
}
else if (id == k__LINE__) {
yyerror("Can't assign to __LINE__");
}
else if (is_local_id(id)) {
if (rb_dvar_curr(id)) {
return NEW_DASGN_CURR(id, val);
}
else if (rb_dvar_defined(id)) {
return NEW_DASGN(id, val);
}
else if (local_id(id) || !dyna_in_block()) {
return NEW_LASGN(id, val);
}
else{
dyna_var(id);
return NEW_DASGN_CURR(id, val);
}
}
else if (is_global_id(id)) {
return NEW_GASGN(id, val);
}
else if (is_instance_id(id)) {
return NEW_IASGN(id, val);
}
else if (is_const_id(id)) {
if (in_def || in_single)
yyerror("dynamic constant assignment");
return NEW_CDECL(id, val, 0);
}
else if (is_class_id(id)) {
if (in_def || in_single) return NEW_CVASGN(id, val);
return NEW_CVDECL(id, val);
}
else {
rb_compile_error("identifier %s is not valid", rb_id2name(id));
}
return 0;
}
static void
shadowing_lvar_gen(parser, name)
struct parser_params *parser;
ID name;
{
if (rb_dvar_defined(name) || local_id(name)) {
rb_warningS("shadowing outer local variable - %s", rb_id2name(name));
}
}
static NODE*
new_bv_gen(parser, name, val)
struct parser_params *parser;
ID name;
NODE *val;
{
if (!is_local_id(name)) {
compile_error(PARSER_ARG "invalid local variable - %s",
rb_id2name(name));
return 0;
}
shadowing_lvar(name);
dyna_var(name);
return NEW_DASGN_CURR(name, val);
}
static NODE *
aryset_gen(parser, recv, idx)
struct parser_params *parser;
NODE *recv, *idx;
{
if (recv && nd_type(recv) == NODE_SELF)
recv = (NODE *)1;
else
value_expr(recv);
return NEW_ATTRASGN(recv, tASET, idx);
}
static void
block_dup_check(node)
NODE *node;
{
if (node && nd_type(node) == NODE_BLOCK_PASS) {
compile_error(PARSER_ARG "both block arg and actual block given");
}
}
ID
rb_id_attrset(id)
ID id;
{
id &= ~ID_SCOPE_MASK;
id |= ID_ATTRSET;
return id;
}
static NODE *
attrset_gen(parser, recv, id)
struct parser_params *parser;
NODE *recv;
ID id;
{
if (recv && nd_type(recv) == NODE_SELF)
recv = (NODE *)1;
else
value_expr(recv);
return NEW_ATTRASGN(recv, rb_id_attrset(id), 0);
}
static void
rb_backref_error(node)
NODE *node;
{
switch (nd_type(node)) {
case NODE_NTH_REF:
rb_compile_error("Can't set variable $%d", node->nd_nth);
break;
case NODE_BACK_REF:
rb_compile_error("Can't set variable $%c", (int)node->nd_nth);
break;
}
}
static NODE *
arg_concat(node1, node2)
NODE *node1;
NODE *node2;
{
if (!node2) return node1;
return NEW_ARGSCAT(node1, node2);
}
static NODE *
arg_add(node1, node2)
NODE *node1;
NODE *node2;
{
if (!node1) return NEW_LIST(node2);
if (nd_type(node1) == NODE_ARRAY) {
return list_append(node1, node2);
}
else {
return NEW_ARGSPUSH(node1, node2);
}
}
static NODE*
node_assign_gen(parser, lhs, rhs)
struct parser_params *parser;
NODE *lhs, *rhs;
{
if (!lhs) return 0;
value_expr(rhs);
switch (nd_type(lhs)) {
case NODE_GASGN:
case NODE_IASGN:
case NODE_LASGN:
case NODE_DASGN:
case NODE_DASGN_CURR:
case NODE_MASGN:
case NODE_CDECL:
case NODE_CVDECL:
case NODE_CVASGN:
lhs->nd_value = rhs;
break;
case NODE_ATTRASGN:
case NODE_CALL:
lhs->nd_args = arg_add(lhs->nd_args, rhs);
break;
default:
/* should not happen */
break;
}
return lhs;
}
static int
value_expr_gen(parser, node)
struct parser_params *parser;
NODE *node;
{
int cond = 0;
while (node) {
switch (nd_type(node)) {
case NODE_DEFN:
case NODE_DEFS:
parser_warning(node, "void value expression");
return Qfalse;
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 Qfalse;
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 (!value_expr(node->nd_body)) return Qfalse;
node = node->nd_else;
break;
case NODE_AND:
case NODE_OR:
cond = 1;
node = node->nd_2nd;
break;
default:
return Qtrue;
}
}
return Qtrue;
}
static void
void_expr_gen(parser, node)
struct parser_params *parser;
NODE *node;
{
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:
case NODE_CREF:
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) {
int line = ruby_sourceline;
ruby_sourceline = nd_line(node);
rb_warn("useless use of %s in void context", useless);
ruby_sourceline = line;
}
}
static void
void_stmts_gen(parser, node)
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_expr(node->nd_head);
node = node->nd_next;
}
}
static NODE *
remove_begin(node)
NODE *node;
{
NODE **n = &node;
while (*n) {
if (nd_type(*n) != NODE_BEGIN) {
return node;
}
*n = (*n)->nd_body;
}
return node;
}
static void
reduce_nodes(body)
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) {
switch (nd_type(node)) {
end:
case NODE_NIL:
*body = 0;
return;
case NODE_RETURN:
*body = node = node->nd_stts;
continue;
case NODE_BEGIN:
*body = node = node->nd_body;
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 (!subnodes(nd_head, nd_resq)) goto end;
break;
default:
return;
}
node = *body;
}
#undef subnodes
}
static int
assign_in_cond(parser, node)
struct parser_params *parser;
NODE *node;
{
switch (nd_type(node)) {
case NODE_MASGN:
yyerror("multiple assignment in conditional");
return 1;
case NODE_LASGN:
case NODE_DASGN:
case NODE_GASGN:
case NODE_IASGN:
break;
default:
return 0;
}
switch (nd_type(node->nd_value)) {
case NODE_LIT:
case NODE_STR:
case NODE_NIL:
case NODE_TRUE:
case NODE_FALSE:
/* reports always */
parser_warn(node->nd_value, "found = in conditional, should be ==");
return 1;
case NODE_DSTR:
case NODE_XSTR:
case NODE_DXSTR:
case NODE_EVSTR:
case NODE_DREGX:
default:
break;
}
return 1;
}
static int
e_option_supplied()
{
if (strcmp(ruby_sourcefile, "-e") == 0)
return Qtrue;
return Qfalse;
}
static void
warn_unless_e_option(node, str)
NODE *node;
const char *str;
{
if (!e_option_supplied()) parser_warn(node, str);
}
static void
warning_unless_e_option(node, str)
NODE *node;
const char *str;
{
if (!e_option_supplied()) parser_warning(node, str);
}
static NODE *cond0 _((struct parser_params*,NODE*));
static NODE*
range_op(parser, node)
struct parser_params *parser;
NODE *node;
{
enum node_type type;
if (!e_option_supplied()) return node;
if (node == 0) return 0;
value_expr(node);
node = cond0(parser, node);
type = nd_type(node);
if (type == NODE_LIT && FIXNUM_P(node->nd_lit)) {
warn_unless_e_option(node, "integer literal in conditional range");
return call_op(node,tEQ,1,NEW_GVAR(rb_intern("$.")));
}
return node;
}
static int
literal_node(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(parser, node)
struct parser_params *parser;
NODE *node;
{
if (node == 0) return 0;
assign_in_cond(parser, node);
switch (nd_type(node)) {
case NODE_DSTR:
case NODE_EVSTR:
case NODE_STR:
rb_warn("string literal in condition");
break;
case NODE_DREGX:
case NODE_DREGX_ONCE:
warning_unless_e_option(node, "regex literal in condition");
local_cnt('_');
local_cnt('~');
return NEW_MATCH2(node, NEW_GVAR(rb_intern("$_")));
case NODE_AND:
case NODE_OR:
node->nd_1st = cond0(parser, node->nd_1st);
node->nd_2nd = cond0(parser, node->nd_2nd);
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);
node->nd_cnt = local_append(internal_id());
if (!e_option_supplied()) {
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:
parser_warning(node, "literal in condition");
break;
case NODE_LIT:
if (TYPE(node->nd_lit) == T_REGEXP) {
warn_unless_e_option(node, "regex literal in condition");
nd_set_type(node, NODE_MATCH);
local_cnt('_');
local_cnt('~');
}
else {
parser_warning(node, "literal in condition");
}
default:
break;
}
return node;
}
static NODE*
cond_gen(parser, node)
struct parser_params *parser;
NODE *node;
{
if (node == 0) return 0;
value_expr(node);
return cond0(parser, node);
}
static NODE*
logop_gen(parser, type, left, right)
struct parser_params *parser;
enum node_type type;
NODE *left, *right;
{
value_expr(left);
if (left && nd_type(left) == type) {
NODE *node = left, *second;
while ((second = node->nd_2nd) != 0 && 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 int
cond_negative(nodep)
NODE **nodep;
{
NODE *c = *nodep;
if (!c) return 0;
switch (nd_type(c)) {
case NODE_NOT:
*nodep = c->nd_body;
return 1;
}
return 0;
}
static void
no_blockarg(node)
NODE *node;
{
if (node && nd_type(node) == NODE_BLOCK_PASS) {
rb_compile_error("block argument should not be given");
}
}
static NODE *
ret_args(node)
NODE *node;
{
if (node) {
no_blockarg(node);
if (nd_type(node) == NODE_ARRAY) {
if (node->nd_next == 0) {
node = node->nd_head;
}
else {
nd_set_type(node, NODE_VALUES);
}
}
else if (nd_type(node) == NODE_SPLAT) {
node = NEW_SVALUE(node);
}
}
return node;
}
static NODE *
new_yield(node)
NODE *node;
{
long state = Qtrue;
if (node) {
no_blockarg(node);
if (nd_type(node) == NODE_ARRAY && node->nd_next == 0) {
node = node->nd_head;
state = Qfalse;
}
else if (node && nd_type(node) == NODE_SPLAT) {
state = Qtrue;
}
}
else {
state = Qfalse;
}
return NEW_YIELD(node, state);
}
static NODE*
negate_lit(node)
NODE *node;
{
switch (TYPE(node->nd_lit)) {
case T_FIXNUM:
node->nd_lit = LONG2FIX(-FIX2LONG(node->nd_lit));
break;
case T_BIGNUM:
node->nd_lit = rb_funcall(node->nd_lit,tUMINUS,0,0);
break;
case T_FLOAT:
RFLOAT(node->nd_lit)->value = -RFLOAT(node->nd_lit)->value;
break;
default:
break;
}
return node;
}
static NODE *
arg_blk_pass(node1, node2)
NODE *node1;
NODE *node2;
{
if (node2) {
node2->nd_head = node1;
return node2;
}
return node1;
}
static NODE*
arg_prepend(node1, node2)
NODE *node1, *node2;
{
switch (nd_type(node2)) {
case NODE_ARRAY:
return list_concat(NEW_LIST(node1), node2);
case NODE_SPLAT:
return arg_concat(node1, node2->nd_head);
case NODE_BLOCK_PASS:
node2->nd_body = arg_prepend(node1, node2->nd_body);
return node2;
default:
rb_bug("unknown nodetype(%d) for arg_prepend", nd_type(node2));
}
return 0; /* not reached */
}
static int
arg_dup_check(vid, m, list, node)
ID vid;
VALUE m, list;
NODE *node;
{
VALUE sym = ID2SYM(vid);
if ((m && rb_ary_includes(m, sym)) || rb_ary_includes(list, sym)) {
ruby_sourceline = nd_line(node);
return 1;
}
rb_ary_push(list, sym);
return 0;
}
static NODE*
new_args_gen(parser, m, o, r, b)
struct parser_params *parser;
VALUE m;
NODE *o, *r, *b;
{
int saved_line = ruby_sourceline;
NODE *tmp;
VALUE list;
list = rb_ary_new();
tmp = o;
while (tmp) {
if (!tmp->nd_head) break;
if (arg_dup_check(tmp->nd_head->nd_vid, m, list, tmp)) {
yyerror("duplicated optional argument name");
return 0;
}
tmp = tmp->nd_next;
}
if (RTEST(r)) {
if (arg_dup_check(r->nd_vid, m, list, r)) {
yyerror("duplicated rest argument name");
return 0;
}
}
if (b) {
if (arg_dup_check(b->nd_vid, m, list, b)) {
yyerror("duplicated block argument name");
return 0;
}
}
ruby_sourceline = saved_line;
return block_append(NEW_ARGS(m, o, r), b);
}
static NODE*
new_call(r,m,a)
NODE *r;
ID m;
NODE *a;
{
if (a && nd_type(a) == NODE_BLOCK_PASS) {
a->nd_iter = NEW_CALL(r,m,a->nd_head);
return a;
}
return NEW_CALL(r,m,a);
}
static NODE*
fcall_gen(parser, m, a)
struct parser_params *parser;
ID m;
NODE *a;
{
if (is_local_id(m)) {
if ((dyna_in_block() && rb_dvar_defined(m)) || local_id(m)) {
return NEW_CALL(gettable(m), rb_intern("call"), a);
}
}
return NEW_FCALL(m,a);
}
static NODE*
new_fcall_gen(parser, m, a)
struct parser_params *parser;
ID m;
NODE *a;
{
if (a && nd_type(a) == NODE_BLOCK_PASS) {
a->nd_iter = NEW_FCALL(m,a->nd_head);
return a;
}
return NEW_FCALL(m, a);
}
static NODE*
new_super(a)
NODE *a;
{
if (a && nd_type(a) == NODE_BLOCK_PASS) {
a->nd_iter = NEW_SUPER(a->nd_head);
return a;
}
return NEW_SUPER(a);
}
static void
local_push_gen(parser, top)
struct parser_params *parser;
int top;
{
struct local_vars *local;
local = ALLOC(struct local_vars);
local->prev = lvtbl;
local->nofree = 0;
local->cnt = 0;
local->tbl = 0;
local->dlev = 0;
local->dname_size = 0;
local->dnames = 0;
local->dyna_vars = ruby_dyna_vars;
lvtbl = local;
if (!top) {
/* preserve reference for GC, but link should be cut. */
rb_dvar_push(0, (VALUE)ruby_dyna_vars);
ruby_dyna_vars->next = 0;
}
}
static void
local_pop_gen(parser)
struct parser_params *parser;
{
struct local_vars *local = lvtbl->prev;
if (lvtbl->tbl) {
if (!lvtbl->nofree) xfree(lvtbl->tbl);
else lvtbl->tbl[0] = lvtbl->cnt;
}
if (lvtbl->dnames) {
xfree(lvtbl->dnames);
}
ruby_dyna_vars = lvtbl->dyna_vars;
xfree(lvtbl);
lvtbl = local;
}
static ID*
local_tbl_gen(parser)
struct parser_params *parser;
{
lvtbl->nofree = 1;
return lvtbl->tbl;
}
static int
local_append_gen(parser, id)
struct parser_params *parser;
ID id;
{
if (lvtbl->tbl == 0) {
lvtbl->tbl = ALLOC_N(ID, 4);
lvtbl->tbl[0] = 0;
lvtbl->tbl[1] = '_';
lvtbl->tbl[2] = '~';
lvtbl->cnt = 2;
if (id == '_') return 0;
if (id == '~') return 1;
}
else {
REALLOC_N(lvtbl->tbl, ID, lvtbl->cnt+2);
}
lvtbl->tbl[lvtbl->cnt+1] = id;
return lvtbl->cnt++;
}
static int
local_cnt_gen(parser, id)
struct parser_params *parser;
ID id;
{
int cnt, max;
if (id == 0) return lvtbl->cnt;
for (cnt=1, max=lvtbl->cnt+1; cnt<max;cnt++) {
if (lvtbl->tbl[cnt] == id) return cnt-1;
}
return local_append(id);
}
static int
local_id_gen(parser, id)
struct parser_params *parser;
ID id;
{
int i, max;
if (lvtbl == 0) return Qfalse;
for (i=3, max=lvtbl->cnt+1; i<max; i++) {
if (lvtbl->tbl[i] == id) return Qtrue;
}
return Qfalse;
}
static void
top_local_init_gen(parser)
struct parser_params *parser;
{
local_push(1);
lvtbl->cnt = ruby_scope->local_tbl?ruby_scope->local_tbl[0]:0;
if (lvtbl->cnt > 0) {
lvtbl->tbl = ALLOC_N(ID, lvtbl->cnt+3);
MEMCPY(lvtbl->tbl, ruby_scope->local_tbl, ID, lvtbl->cnt+1);
}
else {
lvtbl->tbl = 0;
}
if (ruby_dyna_vars)
lvtbl->dlev = 1;
else
lvtbl->dlev = 0;
}
static void
top_local_setup_gen(parser)
struct parser_params *parser;
{
int len = lvtbl->cnt;
int i;
if (len > 0) {
i = ruby_scope->local_tbl?ruby_scope->local_tbl[0]:0;
if (i < len) {
if (i == 0 || (ruby_scope->flags & SCOPE_MALLOC) == 0) {
VALUE *vars = ALLOC_N(VALUE, len+1);
if (ruby_scope->local_vars) {
*vars++ = ruby_scope->local_vars[-1];
MEMCPY(vars, ruby_scope->local_vars, VALUE, i);
rb_mem_clear(vars+i, len-i);
}
else {
*vars++ = 0;
rb_mem_clear(vars, len);
}
ruby_scope->local_vars = vars;
ruby_scope->flags |= SCOPE_MALLOC;
}
else {
VALUE *vars = ruby_scope->local_vars-1;
REALLOC_N(vars, VALUE, len+1);
ruby_scope->local_vars = vars+1;
rb_mem_clear(ruby_scope->local_vars+i, len-i);
}
if (ruby_scope->local_tbl && ruby_scope->local_vars[-1] == 0) {
xfree(ruby_scope->local_tbl);
}
ruby_scope->local_vars[-1] = 0;
ruby_scope->local_tbl = local_tbl();
}
}
local_pop();
}
static void
dyna_var_gen(parser, id)
struct parser_params *parser;
ID id;
{
int i;
rb_dvar_push(id, Qnil);
for (i=0; i<lvtbl->dname_size; i++) {
if (lvtbl->dnames[i] == id) return;
}
if (lvtbl->dname_size == 0) {
lvtbl->dnames = ALLOC_N(ID, 1);
}
else {
REALLOC_N(lvtbl->dnames, ID, lvtbl->dname_size+1);
}
lvtbl->dnames[lvtbl->dname_size++] = id;
}
static void
dyna_check_gen(parser, id)
struct parser_params *parser;
ID id;
{
int i;
if (in_defined) return; /* no check needed */
for (i=0; i<lvtbl->dname_size; i++) {
if (lvtbl->dnames[i] == id) {
rb_warnS("out-of-scope variable - %s", rb_id2name(id));
return;
}
}
}
static struct RVarmap*
dyna_push_gen(parser)
struct parser_params *parser;
{
struct RVarmap* vars = ruby_dyna_vars;
rb_dvar_push(0, 0);
lvtbl->dlev++;
return vars;
}
static void
dyna_pop_gen(parser, vars)
struct parser_params *parser;
struct RVarmap* vars;
{
lvtbl->dlev--;
ruby_dyna_vars = vars;
}
static int
dyna_in_block_gen(parser)
struct parser_params *parser;
{
return (lvtbl->dlev > 0);
}
static NODE *
dyna_init_gen(parser, node, pre)
struct parser_params *parser;
NODE *node;
struct RVarmap *pre;
{
struct RVarmap *post = ruby_dyna_vars;
NODE *var;
if (!node || !post || pre == post) return node;
for (var = 0; post != pre && post->id; post = post->next) {
var = NEW_DASGN_CURR(post->id, var);
}
return block_append(var, node);
}
void
rb_gc_mark_parser()
{
}
NODE*
rb_parser_append_print(node)
NODE *node;
{
NODE *prelude = 0;
if (node && (nd_type(node) == NODE_PRELUDE)) {
prelude = node;
node = node->nd_body;
}
node = block_append(node,
NEW_FCALL(rb_intern("print"),
NEW_ARRAY(NEW_GVAR(rb_intern("$_")))));
if (prelude) {
prelude->nd_body = node;
return prelude;
}
return node;
}
NODE *
rb_parser_while_loop(node, chop, split)
NODE *node;
int chop, split;
{
NODE *prelude = 0;
if (node && (nd_type(node) == NODE_PRELUDE)) {
prelude = node;
node = node->nd_body;
}
if (split) {
node = block_append(NEW_GASGN(rb_intern("$F"),
NEW_CALL(NEW_GVAR(rb_intern("$_")),
rb_intern("split"), 0)),
node);
}
if (chop) {
node = block_append(NEW_CALL(NEW_GVAR(rb_intern("$_")),
rb_intern("chop!"), 0), node);
}
node = NEW_OPT_N(node);
if (prelude) {
prelude->nd_body = node;
return prelude;
}
return node;
}
static const struct {
ID token;
char *name;
} op_tbl[] = {
{tDOT2, ".."},
{tDOT3, "..."},
{'+', "+"},
{'-', "-"},
{'+', "+(binary)"},
{'-', "-(binary)"},
{'*', "*"},
{'/', "/"},
{'%', "%"},
{tPOW, "**"},
{tUPLUS, "+@"},
{tUMINUS, "-@"},
{tUPLUS, "+(unary)"},
{tUMINUS, "-(unary)"},
{'|', "|"},
{'^', "^"},
{'&', "&"},
{tCMP, "<=>"},
{'>', ">"},
{tGEQ, ">="},
{'<', "<"},
{tLEQ, "<="},
{tEQ, "=="},
{tEQQ, "==="},
{tNEQ, "!="},
{tMATCH, "=~"},
{tNMATCH, "!~"},
{'!', "!"},
{'~', "~"},
{'!', "!(unary)"},
{'~', "~(unary)"},
{'!', "!@"},
{'~', "~@"},
{tAREF, "[]"},
{tASET, "[]="},
{tLSHFT, "<<"},
{tRSHFT, ">>"},
{tCOLON2, "::"},
{'`', "`"},
{0, 0}
};
static struct symbols {
ID last_id;
st_table *tbl;
st_table *rev;
} global_symbols = {tLAST_TOKEN};
void
Init_sym()
{
global_symbols.tbl = st_init_strtable_with_size(200);
global_symbols.rev = st_init_numtable_with_size(200);
}
static ID
internal_id()
{
return ID_INTERNAL | (++global_symbols.last_id << ID_SCOPE_SHIFT);
}
ID
rb_intern(name)
const char *name;
{
const char *m = name;
ID id;
int last;
if (st_lookup(global_symbols.tbl, (st_data_t)name, (st_data_t *)&id))
return id;
last = strlen(name)-1;
id = 0;
switch (*name) {
case '$':
id |= ID_GLOBAL;
m++;
if (!is_identchar(*m)) m++;
break;
case '@':
if (name[1] == '@') {
m++;
id |= ID_CLASS;
}
else {
id |= ID_INSTANCE;
}
m++;
break;
default:
if (name[0] != '_' && !ISALPHA(name[0]) && !ismbchar(name[0])) {
/* operators */
int i;
for (i=0; op_tbl[i].token; i++) {
if (*op_tbl[i].name == *name &&
strcmp(op_tbl[i].name, name) == 0) {
id = op_tbl[i].token;
goto id_regist;
}
}
}
if (name[last] == '=') {
/* attribute assignment */
char *buf = ALLOCA_N(char,last+1);
strncpy(buf, name, last);
buf[last] = '\0';
id = rb_intern(buf);
if (id > tLAST_TOKEN && !is_attrset_id(id)) {
id = rb_id_attrset(id);
goto id_regist;
}
id = ID_ATTRSET;
}
else if (ISUPPER(name[0])) {
id = ID_CONST;
}
else {
id = ID_LOCAL;
}
break;
}
while (m <= name + last && is_identchar(*m)) {
m += mbclen(*m);
}
if (*m) id = ID_JUNK;
id |= ++global_symbols.last_id << ID_SCOPE_SHIFT;
id_regist:
name = strdup(name);
st_add_direct(global_symbols.tbl, (st_data_t)name, id);
st_add_direct(global_symbols.rev, id, (st_data_t)name);
return id;
}
char *
rb_id2name(id)
ID id;
{
char *name;
if (id < tLAST_TOKEN) {
int i = 0;
for (i=0; op_tbl[i].token; i++) {
if (op_tbl[i].token == id)
return op_tbl[i].name;
}
}
if (st_lookup(global_symbols.rev, id, (st_data_t *)&name))
return name;
if (is_attrset_id(id)) {
ID id2 = (id & ~ID_SCOPE_MASK) | ID_LOCAL;
again:
name = rb_id2name(id2);
if (name) {
char *buf = ALLOCA_N(char, strlen(name)+2);
strcpy(buf, name);
strcat(buf, "=");
rb_intern(buf);
return rb_id2name(id);
}
if (is_local_id(id2)) {
id2 = (id & ~ID_SCOPE_MASK) | ID_CONST;
goto again;
}
}
return 0;
}
static int
symbols_i(key, value, ary)
char *key;
ID value;
VALUE ary;
{
rb_ary_push(ary, ID2SYM(value));
return ST_CONTINUE;
}
/*
* call-seq:
* Symbol.all_symbols => array
*
* Returns an array of all the symbols currently in Ruby's symbol
* table.
*
* Symbol.all_symbols.size #=> 903
* Symbol.all_symbols[1,20] #=> [:floor, :ARGV, :Binding, :symlink,
* :chown, :EOFError, :$;, :String,
* :LOCK_SH, :"setuid?", :$<,
* :default_proc, :compact, :extend,
* :Tms, :getwd, :$=, :ThreadGroup,
* :wait2, :$>]
*/
VALUE
rb_sym_all_symbols()
{
VALUE ary = rb_ary_new2(global_symbols.tbl->num_entries);
st_foreach(global_symbols.tbl, symbols_i, ary);
return ary;
}
int
rb_is_const_id(id)
ID id;
{
if (is_const_id(id)) return Qtrue;
return Qfalse;
}
int
rb_is_class_id(id)
ID id;
{
if (is_class_id(id)) return Qtrue;
return Qfalse;
}
int
rb_is_instance_id(id)
ID id;
{
if (is_instance_id(id)) return Qtrue;
return Qfalse;
}
int
rb_is_local_id(id)
ID id;
{
if (is_local_id(id)) return Qtrue;
return Qfalse;
}
int
rb_is_junk_id(id)
ID id;
{
if (is_junk_id(id)) return Qtrue;
return Qfalse;
}
static void
special_local_set(c, val)
char c;
VALUE val;
{
VALUE volatile vparser = rb_parser_new();
struct parser_params *parser;
int cnt;
Data_Get_Struct(vparser, struct parser_params, parser);
top_local_init();
cnt = local_cnt(c);
top_local_setup();
ruby_scope->local_vars[cnt] = val;
}
VALUE
rb_backref_get()
{
VALUE *var = rb_svar(1);
if (var) {
return *var;
}
return Qnil;
}
void
rb_backref_set(val)
VALUE val;
{
VALUE *var = rb_svar(1);
if (var) {
*var = val;
}
else {
special_local_set('~', val);
}
}
VALUE
rb_lastline_get()
{
VALUE *var = rb_svar(0);
if (var) {
return *var;
}
return Qnil;
}
void
rb_lastline_set(val)
VALUE val;
{
VALUE *var = rb_svar(0);
if (var) {
*var = val;
}
else {
special_local_set('_', val);
}
}
#endif /* !RIPPER */
static void
parser_initialize(parser)
struct parser_params *parser;
{
parser->eofp = Qfalse;
parser->parser_lex_strterm = 0;
parser->parser_cond_stack = 0;
parser->parser_cmdarg_stack = 0;
parser->parser_class_nest = 0;
parser->parser_paren_nest = 0;
parser->parser_lpar_beg = 0;
parser->parser_in_single = 0;
parser->parser_in_def = 0;
parser->parser_in_defined = 0;
parser->parser_compile_for_eval = 0;
parser->parser_cur_mid = 0;
parser->parser_tokenbuf = NULL;
parser->parser_tokidx = 0;
parser->parser_toksiz = 0;
parser->parser_heredoc_end = 0;
parser->parser_command_start = Qtrue;
parser->parser_lex_pbeg = 0;
parser->parser_lex_p = 0;
parser->parser_lex_pend = 0;
parser->parser_lvtbl = 0;
parser->parser_ruby__end__seen = 0;
#ifndef RIPPER
parser->parser_eval_tree_begin = 0;
parser->parser_eval_tree = 0;
#else
parser->parser_ruby_sourcefile = Qnil;
parser->delayed = Qnil;
parser->result = Qnil;
parser->parsing_thread = Qnil;
parser->toplevel_p = Qtrue;
#endif
}
static void
parser_mark(ptr)
void *ptr;
{
struct parser_params *p = (struct parser_params*)ptr;
rb_gc_mark((VALUE)p->parser_lex_strterm);
rb_gc_mark(p->parser_lex_input);
rb_gc_mark(p->parser_lex_lastline);
#ifndef RIPPER
rb_gc_mark((VALUE)p->parser_eval_tree_begin) ;
rb_gc_mark((VALUE)p->parser_eval_tree) ;
rb_gc_mark(p->debug_lines);
#else
rb_gc_mark(p->parser_ruby_sourcefile);
rb_gc_mark(p->delayed);
rb_gc_mark(p->result);
rb_gc_mark(p->parsing_thread);
#endif
}
static void
parser_free(ptr)
void *ptr;
{
struct parser_params *p = (struct parser_params*)ptr;
struct local_vars *local, *prev;
if (p->parser_tokenbuf) {
xfree(p->parser_tokenbuf);
}
for (local = p->parser_lvtbl; local; local = prev) {
if (local->tbl && !local->nofree)
xfree(local->tbl);
prev = local->prev;
xfree(local);
}
xfree(p);
}
#ifndef RIPPER
static struct parser_params *
parser_new()
{
struct parser_params *p;
p = ALLOC_N(struct parser_params, 1);
MEMZERO(p, struct parser_params, 1);
parser_initialize(p);
return p;
}
VALUE
rb_parser_new()
{
struct parser_params *p = parser_new();
return Data_Wrap_Struct(0, parser_mark, parser_free, p);
}
/*
* call-seq:
* ripper#end_seen? -> Boolean
*
* Return if parsed source ended by +\_\_END\_\_+.
* This number starts from 1.
*/
VALUE
rb_parser_end_seen_p(vparser)
VALUE vparser;
{
struct parser_params *parser;
Data_Get_Struct(vparser, struct parser_params, parser);
return ruby__end__seen ? Qtrue : Qfalse;
}
#endif
#ifdef RIPPER
#ifdef RIPPER_DEBUG
extern int rb_is_pointer_to_heap _((VALUE));
/* :nodoc: */
static VALUE
ripper_validate_object(self, x)
VALUE self, 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 (TYPE(x)) {
case T_STRING:
case T_OBJECT:
case T_ARRAY:
case T_BIGNUM:
case T_FLOAT:
return x;
case T_NODE:
rb_raise(rb_eArgError, "NODE given: %p", x);
default:
rb_raise(rb_eArgError, "wrong type of ruby object: %p (%s)",
x, rb_obj_classname(x));
}
return x;
}
#endif
#define validate(x)
static VALUE
ripper_dispatch0(parser, mid)
struct parser_params *parser;
ID mid;
{
return rb_funcall(parser->value, mid, 0);
}
static VALUE
ripper_dispatch1(parser, mid, a)
struct parser_params *parser;
ID mid;
VALUE a;
{
validate(a);
return rb_funcall(parser->value, mid, 1, a);
}
static VALUE
ripper_dispatch2(parser, mid, a, b)
struct parser_params *parser;
ID mid;
VALUE a, b;
{
validate(a);
validate(b);
return rb_funcall(parser->value, mid, 2, a, b);
}
static VALUE
ripper_dispatch3(parser, mid, a, b, c)
struct parser_params *parser;
ID mid;
VALUE a, b, c;
{
validate(a);
validate(b);
validate(c);
return rb_funcall(parser->value, mid, 3, a, b, c);
}
static VALUE
ripper_dispatch4(parser, mid, a, b, c, d)
struct parser_params *parser;
ID mid;
VALUE a, b, c, d;
{
validate(a);
validate(b);
validate(c);
validate(d);
return rb_funcall(parser->value, mid, 4, a, b, c, d);
}
static VALUE
ripper_dispatch5(parser, mid, a, b, c, d, e)
struct parser_params *parser;
ID mid;
VALUE a, b, c, d, e;
{
validate(a);
validate(b);
validate(c);
validate(d);
validate(e);
return rb_funcall(parser->value, mid, 5, a, b, c, d, e);
}
static struct kw_assoc {
ID id;
const char *name;
} keyword_to_name[] = {
{kCLASS, "class"},
{kMODULE, "module"},
{kDEF, "def"},
{kUNDEF, "undef"},
{kBEGIN, "begin"},
{kRESCUE, "rescue"},
{kENSURE, "ensure"},
{kEND, "end"},
{kIF, "if"},
{kUNLESS, "unless"},
{kTHEN, "then"},
{kELSIF, "elsif"},
{kELSE, "else"},
{kCASE, "case"},
{kWHEN, "when"},
{kWHILE, "while"},
{kUNTIL, "until"},
{kFOR, "for"},
{kBREAK, "break"},
{kNEXT, "next"},
{kREDO, "redo"},
{kRETRY, "retry"},
{kIN, "in"},
{kDO, "do"},
{kDO_COND, "do"},
{kDO_BLOCK, "do"},
{kRETURN, "return"},
{kYIELD, "yield"},
{kSUPER, "super"},
{kSELF, "self"},
{kNIL, "nil"},
{kTRUE, "true"},
{kFALSE, "false"},
{kAND, "and"},
{kOR, "or"},
{kNOT, "not"},
{kIF_MOD, "if"},
{kUNLESS_MOD, "unless"},
{kWHILE_MOD, "while"},
{kUNTIL_MOD, "until"},
{kRESCUE_MOD, "rescue"},
{kALIAS, "alias"},
{kDEFINED, "defined"},
{klBEGIN, "BEGIN"},
{klEND, "END"},
{k__LINE__, "__LINE__"},
{k__FILE__, "__FILE__"},
{0, NULL}
};
static const char*
keyword_id_to_str(id)
ID id;
{
struct kw_assoc *a;
for (a = keyword_to_name; a->id; a++) {
if (a->id == id)
return a->name;
}
return NULL;
}
static VALUE
ripper_id2sym(id)
ID id;
{
const char *name;
char buf[8];
if (id <= 256) {
buf[0] = id;
buf[1] = '\0';
return ID2SYM(rb_intern(buf));
}
if ((name = keyword_id_to_str(id))) {
return ID2SYM(rb_intern(name));
}
switch (id) {
case tOROP:
name = "||";
break;
case tANDOP:
name = "&&";
break;
default:
name = rb_id2name(id);
if (!name) {
rb_bug("cannot convert ID to string: %ld", (unsigned long)id);
}
break;
}
return ID2SYM(rb_intern(name));
}
static VALUE
ripper_intern(s)
const char *s;
{
return ID2SYM(rb_intern(s));
}
#ifdef HAVE_STDARG_PROTOTYPES
# include <stdarg.h>
# define va_init_list(a,b) va_start(a,b)
#else
# include <varargs.h>
# define va_init_list(a,b) va_start(a)
#endif
static void
#ifdef HAVE_STDARG_PROTOTYPES
ripper_compile_error(struct parser_params *parser, const char *fmt, ...)
#else
ripper_compile_error(parser, fmt, va_alist)
struct parser_params *parser;
const char *fmt;
va_dcl
#endif
{
VALUE str;
va_list args;
va_init_list(args, fmt);
str = rb_vsprintf(fmt, args);
va_end(args);
rb_funcall(parser->value, rb_intern("compile_error"), 1, str);
}
static void
ripper_warn0(parser, fmt)
struct parser_params *parser;
const char *fmt;
{
rb_funcall(parser->value, rb_intern("warn"), 1, rb_str_new2(fmt));
}
static void
ripper_warnI(parser, fmt, a)
struct parser_params *parser;
const char *fmt;
int a;
{
rb_funcall(parser->value, rb_intern("warn"), 2,
rb_str_new2(fmt), INT2NUM(a));
}
static void
ripper_warnS(parser, fmt, str)
struct parser_params *parser;
const char *fmt;
const char *str;
{
rb_funcall(parser->value, rb_intern("warn"), 2,
rb_str_new2(fmt), rb_str_new2(str));
}
static void
ripper_warning0(parser, fmt)
struct parser_params *parser;
const char *fmt;
{
rb_funcall(parser->value, rb_intern("warning"), 1, rb_str_new2(fmt));
}
static void
ripper_warningS(parser, fmt, str)
struct parser_params *parser;
const char *fmt;
const char *str;
{
rb_funcall(parser->value, rb_intern("warning"), 2,
rb_str_new2(fmt), rb_str_new2(str));
}
static VALUE ripper_lex_get_generic _((struct parser_params *, VALUE));
static VALUE
ripper_lex_get_generic(parser, src)
struct parser_params *parser;
VALUE src;
{
return rb_funcall(src, ripper_id_gets, 0);
}
static VALUE ripper_s_allocate _((VALUE));
static VALUE
ripper_s_allocate(klass)
VALUE klass;
{
struct parser_params *p;
VALUE self;
p = ALLOC_N(struct parser_params, 1);
MEMZERO(p, struct parser_params, 1);
self = Data_Wrap_Struct(klass, parser_mark, parser_free, p);
p->value = self;
return self;
}
static int
obj_respond_to(obj, mid)
VALUE obj, mid;
{
VALUE st;
st = rb_funcall(obj, rb_intern("respond_to?"), 2, mid, Qfalse);
return RTEST(st);
}
#define ripper_initialized_p(r) ((r)->parser_lex_input != 0)
/*
* call-seq:
* Ripper.new(src, filename="(ripper)", lineno=1) -> ripper
*
* Create a new Ripper object.
* _src_ must be a String, a 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(argc, argv, self)
int argc;
VALUE *argv;
VALUE self;
{
struct parser_params *parser;
VALUE src, fname, lineno;
Data_Get_Struct(self, struct parser_params, parser);
rb_scan_args(argc, argv, "12", &src, &fname, &lineno);
if (obj_respond_to(src, ID2SYM(ripper_id_gets))) {
parser->parser_lex_gets = ripper_lex_get_generic;
}
else {
StringValue(src);
parser->parser_lex_gets = lex_get_str;
}
parser->parser_lex_input = src;
parser->eofp = Qfalse;
if (NIL_P(fname)) {
fname = rb_str_new2("(ripper)");
}
else {
StringValue(fname);
}
parser_initialize(parser);
parser->parser_ruby_sourcefile = fname;
parser->parser_ruby_sourceline = NIL_P(lineno) ? 0 : NUM2INT(lineno) - 1;
return Qnil;
}
/*
* call-seq:
* Ripper.yydebug -> true or false
*
* Get yydebug.
*/
static VALUE
ripper_s_get_yydebug(self)
VALUE self;
{
return ripper_yydebug ? Qtrue : Qfalse;
}
/*
* call-seq:
* Ripper.yydebug = flag
*
* Set yydebug.
*/
static VALUE
ripper_s_set_yydebug(self, flag)
VALUE self, flag;
{
ripper_yydebug = RTEST(flag);
return flag;
}
extern VALUE rb_thread_pass _((void));
struct ripper_args {
struct parser_params *parser;
int argc;
VALUE *argv;
};
static VALUE
ripper_parse0(parser_v)
VALUE parser_v;
{
struct parser_params *parser;
Data_Get_Struct(parser_v, struct parser_params, parser);
parser_prepare(parser);
ripper_yyparse((void*)parser);
return parser->result;
}
static VALUE
ripper_ensure(parser_v)
VALUE parser_v;
{
struct parser_params *parser;
Data_Get_Struct(parser_v, struct parser_params, 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(self)
VALUE self;
{
struct parser_params *parser;
Data_Get_Struct(self, struct parser_params, 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(self)
VALUE self;
{
struct parser_params *parser;
long col;
Data_Get_Struct(self, struct parser_params, 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 - parser->parser_lex_pbeg;
return LONG2NUM(col);
}
/*
* call-seq:
* ripper#lineno -> Integer
*
* Return line number of current parsing line.
* This number starts from 1.
*/
static VALUE
ripper_lineno(self)
VALUE self;
{
struct parser_params *parser;
Data_Get_Struct(self, struct parser_params, 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(parser->parser_ruby_sourceline);
}
#ifdef RIPPER_DEBUG
/* :nodoc: */
static VALUE
ripper_assert_Qundef(self, obj, msg)
VALUE self, obj, msg;
{
StringValue(msg);
if (obj == Qundef) {
rb_raise(rb_eArgError, RSTRING(msg)->ptr);
}
return Qnil;
}
/* :nodoc: */
static VALUE
ripper_value(self, obj)
VALUE self, obj;
{
return ULONG2NUM(obj);
}
#endif
void
Init_ripper()
{
VALUE Ripper;
Ripper = rb_define_class("Ripper", rb_cObject);
rb_define_const(Ripper, "Version", rb_str_new2(RIPPER_VERSION));
rb_define_singleton_method(Ripper, "yydebug", ripper_s_get_yydebug, 0);
rb_define_singleton_method(Ripper, "yydebug=", ripper_s_set_yydebug, 1);
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, "lineno", ripper_lineno, 0);
rb_define_method(Ripper, "end_seen?", rb_parser_end_seen_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
ripper_id_gets = rb_intern("gets");
ripper_init_eventids1();
ripper_init_eventids2();
/* ensure existing in symbol table */
rb_intern("||");
rb_intern("&&");
}
#endif /* RIPPER */
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