From 7e5057767d4e436a042f0f340262e145c11ac1ee Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fredrik=20H=C3=BCbinette=20=28Hubbe=29?= <hubbe@hubbe.net>
Date: Sat, 2 Nov 1996 22:23:46 -0800
Subject: [PATCH] if(int i) implemeved
Rev: src/language.yacc:1.4
---
src/language.yacc | 1462 +++++++++++++++++++++++----------------------
1 file changed, 761 insertions(+), 701 deletions(-)
diff --git a/src/language.yacc b/src/language.yacc
index c473d5bc0d..03a0eff00b 100644
--- a/src/language.yacc
+++ b/src/language.yacc
@@ -213,426 +213,504 @@ void fix_comp_stack(int sp)
}
%type <fnum> F_FLOAT
-%type <number> modifiers modifier optional_dot_dot_dot
-%type <number> assign F_NUMBER F_LOCAL arguments arguments2
-%type <number> optional_stars modifier_list
-%type <string> F_IDENTIFIER F_STRING string_constant low_string
-%type <string> optional_identifier cast simple_type
-%type <string> optional_rename_inherit
-%type <number> F_ARRAY_ID F_BREAK F_CASE F_CATCH F_CONTINUE F_DEFAULT F_DO
-%type <number> F_PREDEF F_ELSE F_FLOAT_ID F_FOR F_FOREACH F_FUNCTION_ID F_GAUGE
-%type <number> F_IF F_INHERIT F_INLINE F_INT_ID F_LAMBDA F_MULTISET_ID F_MAPPING_ID
-%type <number> F_MIXED_ID F_NO_MASK F_OBJECT_ID F_PRIVATE F_PROGRAM_ID
-%type <number> F_PROTECTED F_PUBLIC F_RETURN F_SSCANF F_STATIC
-%type <number> F_STRING_ID F_SWITCH F_VARARGS F_VOID_ID F_WHILE
+%type <string> F_IDENTIFIER
+%type <string> F_STRING
+%type <string> cast simple_type
+%type <string> low_string
+%type <string> optional_identifier
+%type <string> optional_rename_inherit
+%type <string> string_constant
+
+%type <number> F_ARRAY_ID
+%type <number> F_BREAK
+%type <number> F_CASE
+%type <number> F_CATCH
+%type <number> F_CONTINUE
+%type <number> F_DEFAULT
+%type <number> F_DO
+%type <number> F_ELSE
+%type <number> F_FLOAT_ID
+%type <number> F_FOR
+%type <number> F_FOREACH
+%type <number> F_FUNCTION_ID
+%type <number> F_GAUGE
+%type <number> F_IF
+%type <number> F_INHERIT
+%type <number> F_INLINE
+%type <number> F_INT_ID
+%type <number> F_LAMBDA
+%type <number> F_LOCAL
+%type <number> F_MAPPING_ID
+%type <number> F_MIXED_ID
+%type <number> F_MULTISET_ID
+%type <number> F_NO_MASK
+%type <number> F_NUMBER
+%type <number> F_OBJECT_ID
+%type <number> F_PREDEF
+%type <number> F_PRIVATE
+%type <number> F_PROGRAM_ID
+%type <number> F_PROTECTED
+%type <number> F_PUBLIC
+%type <number> F_RETURN
+%type <number> F_SSCANF
+%type <number> F_STATIC
+%type <number> F_STRING_ID
+%type <number> F_SWITCH
+%type <number> F_VARARGS
+%type <number> F_VOID_ID
+%type <number> F_WHILE
+%type <number> arguments
+%type <number> arguments2
+%type <number> assign
+%type <number> modifier
+%type <number> modifier_list
+%type <number> modifiers
+%type <number> optional_dot_dot_dot
+%type <number> optional_stars
/* The following symbos return type information */
-%type <n> string expr01 expr00 comma_expr comma_expr_or_zero
-%type <n> expr2 expr1 expr3 expr0 expr4 catch lvalue_list
-%type <n> lambda for_expr block assoc_pair new_local_name
-%type <n> expr_list2 m_expr_list m_expr_list2 statement gauge sscanf
-%type <n> for do cond optional_else_part while statements
-%type <n> local_name_list class catch_arg comma_expr_or_maxint
-%type <n> unused2 foreach unused switch case return expr_list default
-%type <n> continue break block_or_semi typeof
+%type <n> assoc_pair
+%type <n> block
+%type <n> block_or_semi
+%type <n> break
+%type <n> case
+%type <n> catch
+%type <n> catch_arg
+%type <n> class
+%type <n> comma_expr
+%type <n> comma_expr2
+%type <n> comma_expr_or_maxint
+%type <n> comma_expr_or_zero
+%type <n> cond
+%type <n> continue
+%type <n> default
+%type <n> do
+%type <n> expr00
+%type <n> expr01
+%type <n> expr1
+%type <n> expr2
+%type <n> expr3 expr0
+%type <n> expr4
+%type <n> expr_list
+%type <n> expr_list2
+%type <n> for
+%type <n> for_expr
+%type <n> foreach
+%type <n> gauge
+%type <n> lambda
+%type <n> local_name_list
+%type <n> lvalue_list
+%type <n> m_expr_list
+%type <n> m_expr_list2
+%type <n> new_local_name
+%type <n> optional_else_part
+%type <n> return
+%type <n> sscanf
+%type <n> statement
+%type <n> statements
+%type <n> string
+%type <n> switch
+%type <n> typeof
+%type <n> unused
+%type <n> unused2
+%type <n> while
%%
all: program;
program: program def optional_semi_colon
- | /* empty */ ;
+ | /* empty */
+ ;
optional_semi_colon: /* empty */
- | ';' { yyerror("Extra ';'. Ignored."); };
+ | ';' { yyerror("Extra ';'. Ignored."); }
+ ;
string_constant: low_string
- | string_constant '+' low_string
- {
- $$=add_shared_strings($1,$3);
- free_string($1);
- free_string($3);
- }
- ;
+ | string_constant '+' low_string
+ {
+ $$=add_shared_strings($1,$3);
+ free_string($1);
+ free_string($3);
+ }
+ ;
optional_rename_inherit: ':' F_IDENTIFIER { $$=$2; }
- | { $$=0; }
- ;
+ | { $$=0; }
+ ;
inheritance: modifiers F_INHERIT string_constant optional_rename_inherit ';'
- {
- simple_do_inherit($3,$1,$4);
- };
+ {
+ simple_do_inherit($3,$1,$4);
+ }
+ ;
-block_or_semi: block { $$ = mknode(F_ARG_LIST,$1,mknode(F_RETURN,mkintnode(0),0)); }
- | ';' { $$ = NULL;}
- ;
+block_or_semi: block
+ {
+ $$ = mknode(F_ARG_LIST,$1,mknode(F_RETURN,mkintnode(0),0));
+ }
+ | ';' { $$ = NULL;}
+ ;
type_or_error: simple_type
- {
- if(local_variables->current_type) free_string(local_variables->current_type);
- local_variables->current_type=$1;
- }
- | /* empty */
- {
- yyerror("Missing type.");
- copy_shared_string(local_variables->current_type,
- mixed_type_string);
- }
+ {
+ if(local_variables->current_type)
+ free_string(local_variables->current_type);
+ local_variables->current_type=$1;
+ }
+ | /* empty */
+ {
+ yyerror("Missing type.");
+ copy_shared_string(local_variables->current_type,
+ mixed_type_string);
+ }
def: modifiers type_or_error optional_stars F_IDENTIFIER '(' arguments ')'
- {
- int e;
- /* construct the function type */
- push_finished_type(local_variables->current_type);
- while($3--) push_type(T_ARRAY);
-
- if(local_variables->current_return_type)
- free_string(local_variables->current_return_type);
- local_variables->current_return_type=pop_type();
-
- push_finished_type(local_variables->current_return_type);
-
- e=$6-1;
- if(varargs)
- {
- push_finished_type(local_variables->variable[e].type);
- e--;
- varargs=0;
- pop_type_stack();
- }else{
- push_type(T_VOID);
- }
- push_type(T_MANY);
- for(; e>=0; e--)
- {
- push_finished_type(local_variables->variable[e].type);
- if($1 & ID_VARARGS)
- {
- push_type(T_VOID);
- push_type(T_OR);
- }
- }
- push_type(T_FUNCTION);
-
- $<string>$=pop_type();
- define_function($4,
- $<string>$,
- $1,
- IDENTIFIER_PIKE_FUNCTION,
- 0);
- }
- block_or_semi
- {
- int e;
- if($9)
- {
- union idptr tmp;
- int args, vargs;
- for(e=0; e<$6; e++)
- {
- if(!local_variables->variable[e].name ||
- !local_variables->variable[e].name->len)
- {
- my_yyerror("Missing name for argument %d",e);
- }
- }
-
- tmp.offset=PC;
- args=count_arguments($<string>8);
- if(args < 0)
- {
- args=~args;
- vargs=IDENTIFIER_VARARGS;
- }else{
- vargs=0;
- }
- ins_byte(local_variables->max_number_of_locals, A_PROGRAM);
- ins_byte(args, A_PROGRAM);
- dooptcode($4, $9, $6);
-
- define_function($4,
- $<string>8,
- $1,
- IDENTIFIER_PIKE_FUNCTION | vargs,
- &tmp);
- }
- if(local_variables->current_return_type)
- {
- free_string(local_variables->current_return_type);
- local_variables->current_return_type=0;
- }
- free_all_local_names();
- free_string($4);
- free_string($<string>8);
- }
- | modifiers type_or_error name_list ';' {}
- | inheritance {}
- | error
- {
- reset_type_stack();
- if(num_parse_error>5) YYACCEPT;
- } ;
+ {
+ int e;
+ /* construct the function type */
+ push_finished_type(local_variables->current_type);
+ while($3--) push_type(T_ARRAY);
+
+ if(local_variables->current_return_type)
+ free_string(local_variables->current_return_type);
+ local_variables->current_return_type=pop_type();
+
+ push_finished_type(local_variables->current_return_type);
+
+ e=$6-1;
+ if(varargs)
+ {
+ push_finished_type(local_variables->variable[e].type);
+ e--;
+ varargs=0;
+ pop_type_stack();
+ }else{
+ push_type(T_VOID);
+ }
+ push_type(T_MANY);
+ for(; e>=0; e--)
+ {
+ push_finished_type(local_variables->variable[e].type);
+ if($1 & ID_VARARGS)
+ {
+ push_type(T_VOID);
+ push_type(T_OR);
+ }
+ }
+ push_type(T_FUNCTION);
+
+ $<string>$=pop_type();
+ define_function($4,
+ $<string>$,
+ $1,
+ IDENTIFIER_PIKE_FUNCTION,
+ 0);
+ }
+ block_or_semi
+ {
+ int e;
+ if($9)
+ {
+ union idptr tmp;
+ int args, vargs;
+ for(e=0; e<$6; e++)
+ {
+ if(!local_variables->variable[e].name ||
+ !local_variables->variable[e].name->len)
+ {
+ my_yyerror("Missing name for argument %d",e);
+ }
+ }
+
+ tmp.offset=PC;
+ args=count_arguments($<string>8);
+ if(args < 0)
+ {
+ args=~args;
+ vargs=IDENTIFIER_VARARGS;
+ }else{
+ vargs=0;
+ }
+ ins_byte(local_variables->max_number_of_locals, A_PROGRAM);
+ ins_byte(args, A_PROGRAM);
+ dooptcode($4, $9, $6);
+
+ define_function($4,
+ $<string>8,
+ $1,
+ IDENTIFIER_PIKE_FUNCTION | vargs,
+ &tmp);
+ }
+ if(local_variables->current_return_type)
+ {
+ free_string(local_variables->current_return_type);
+ local_variables->current_return_type=0;
+ }
+ free_all_local_names();
+ free_string($4);
+ free_string($<string>8);
+ }
+ | modifiers type_or_error name_list ';' {}
+ | inheritance {}
+ | error
+ {
+ reset_type_stack();
+ if(num_parse_error>5) YYACCEPT;
+ }
+ ;
optional_dot_dot_dot: F_DOT_DOT_DOT { $$=1; }
- | /* empty */ { $$=0; }
- ;
+ | /* empty */ { $$=0; }
+ ;
optional_identifier: F_IDENTIFIER
- | /* empty */ { $$=make_shared_string(""); }
- ;
+ | /* empty */ { $$=make_shared_string(""); }
+ ;
new_arg_name: type optional_dot_dot_dot optional_identifier
- {
- if(varargs) yyerror("Can't define more arguments after ...");
-
- if($2)
- {
- push_type(T_ARRAY);
- varargs=1;
- }
- if(islocal($3) >= 0)
- my_yyerror("Variable '%s' appear twice in argument list.",
- $3->str);
+ {
+ if(varargs) yyerror("Can't define more arguments after ...");
- add_local_name($3, pop_type());
- };
+ if($2)
+ {
+ push_type(T_ARRAY);
+ varargs=1;
+ }
+ if(islocal($3) >= 0)
+ my_yyerror("Variable '%s' appear twice in argument list.",
+ $3->str);
+
+ add_local_name($3, pop_type());
+ }
+ ;
arguments: /* empty */ optional_comma { $$=0; }
- | arguments2 optional_comma { $$=$1; }
- ;
+ | arguments2 optional_comma { $$=$1; }
+ ;
arguments2: new_arg_name { $$ = 1; }
- | arguments2 ',' new_arg_name { $$ = $1 + 1; }
- ;
+ | arguments2 ',' new_arg_name { $$ = $1 + 1; }
+ ;
modifier: F_NO_MASK { $$ = ID_NOMASK; }
- | F_STATIC { $$ = ID_STATIC; }
- | F_PRIVATE { $$ = ID_PRIVATE; }
- | F_PUBLIC { $$ = ID_PUBLIC; }
- | F_VARARGS { $$ = ID_VARARGS; }
- | F_PROTECTED { $$ = ID_PROTECTED; }
- | F_INLINE { $$ = ID_INLINE | ID_NOMASK; }
- ;
+ | F_STATIC { $$ = ID_STATIC; }
+ | F_PRIVATE { $$ = ID_PRIVATE; }
+ | F_PUBLIC { $$ = ID_PUBLIC; }
+ | F_VARARGS { $$ = ID_VARARGS; }
+ | F_PROTECTED { $$ = ID_PROTECTED; }
+ | F_INLINE { $$ = ID_INLINE | ID_NOMASK; }
+ ;
-modifiers: modifier_list { $$=current_modifiers=$1; }
+modifiers: modifier_list { $$=current_modifiers=$1; } ;
modifier_list: /* empty */ { $$ = 0; }
- | modifier modifier_list
- {
- $$ = $1 | $2;
- }
- ;
+ | modifier modifier_list { $$ = $1 | $2; }
+ ;
optional_stars: optional_stars '*' { $$=$1 + 1; }
- | /* empty */ { $$=0; }
- ;
+ | /* empty */ { $$=0; }
+ ;
cast: '(' type ')' { $$=pop_type(); } ;
type: type '*' { push_type(T_ARRAY); }
- | type2
- ;
+ | type2
+ ;
simple_type: type2 { $$=pop_type(); }
type2: type2 '|' type3 { push_type(T_OR); }
- | type3
- ;
+ | type3
+ ;
type3: F_INT_ID { push_type(T_INT); }
- | F_FLOAT_ID { push_type(T_FLOAT); }
- | F_STRING_ID { push_type(T_STRING); }
- | F_OBJECT_ID { push_type(T_OBJECT); }
- | F_PROGRAM_ID { push_type(T_PROGRAM); }
- | F_VOID_ID { push_type(T_VOID); }
- | F_MIXED_ID { push_type(T_MIXED); }
- | F_MAPPING_ID opt_mapping_type { push_type(T_MAPPING); }
- | F_ARRAY_ID opt_array_type { push_type(T_ARRAY); }
- | F_MULTISET_ID opt_array_type { push_type(T_MULTISET); }
- | F_FUNCTION_ID opt_function_type { push_type(T_FUNCTION); }
- ;
+ | F_FLOAT_ID { push_type(T_FLOAT); }
+ | F_STRING_ID { push_type(T_STRING); }
+ | F_OBJECT_ID { push_type(T_OBJECT); }
+ | F_PROGRAM_ID { push_type(T_PROGRAM); }
+ | F_VOID_ID { push_type(T_VOID); }
+ | F_MIXED_ID { push_type(T_MIXED); }
+ | F_MAPPING_ID opt_mapping_type { push_type(T_MAPPING); }
+ | F_ARRAY_ID opt_array_type { push_type(T_ARRAY); }
+ | F_MULTISET_ID opt_array_type { push_type(T_MULTISET); }
+ | F_FUNCTION_ID opt_function_type { push_type(T_FUNCTION); }
+ ;
opt_function_type: '('
- {
- type_stack_mark();
- type_stack_mark();
- }
- function_type_list
- optional_dot_dot_dot
- ':'
- {
- if ($4)
- {
- push_type(T_MANY);
- type_stack_reverse();
- }else{
- type_stack_reverse();
- push_type(T_MANY);
- push_type(T_VOID);
- }
- type_stack_mark();
- }
- type ')'
- {
- type_stack_reverse();
- type_stack_reverse();
- }
- | {
- push_type(T_MIXED);
- push_type(T_MIXED);
- push_type(T_MANY);
- };
+ {
+ type_stack_mark();
+ type_stack_mark();
+ }
+ function_type_list optional_dot_dot_dot ':'
+ {
+ if ($4)
+ {
+ push_type(T_MANY);
+ type_stack_reverse();
+ }else{
+ type_stack_reverse();
+ push_type(T_MANY);
+ push_type(T_VOID);
+ }
+ type_stack_mark();
+ }
+ type ')'
+ {
+ type_stack_reverse();
+ type_stack_reverse();
+ }
+ | /* empty */
+ {
+ push_type(T_MIXED);
+ push_type(T_MIXED);
+ push_type(T_MANY);
+ }
+ ;
function_type_list: /* Empty */ optional_comma
- | function_type_list2 optional_comma
- ;
+ | function_type_list2 optional_comma
+ ;
function_type_list2: type
- | function_type_list2 ','
- {
- type_stack_reverse();
- type_stack_mark();
- }
- type
- ;
+ | function_type_list2 ','
+ {
+ type_stack_reverse();
+ type_stack_mark();
+ }
+ type
+ ;
opt_array_type: '(' type ')'
- | { push_type(T_MIXED); }
- ;
+ | { push_type(T_MIXED); }
+ ;
opt_mapping_type: '('
- {
- type_stack_mark();
- type_stack_mark();
- }
- type ':'
- {
- type_stack_reverse();
- type_stack_mark();
- }
- type
- {
- type_stack_reverse();
- type_stack_reverse();
- }
- ')'
- | {
- push_type(T_MIXED);
- push_type(T_MIXED);
- }
- ;
+ {
+ type_stack_mark();
+ type_stack_mark();
+ }
+ type ':'
+ {
+ type_stack_reverse();
+ type_stack_mark();
+ }
+ type
+ {
+ type_stack_reverse();
+ type_stack_reverse();
+ }
+ ')'
+ | /* empty */
+ {
+ push_type(T_MIXED);
+ push_type(T_MIXED);
+ }
+ ;
name_list: new_name
- | name_list ',' new_name;
+ | name_list ',' new_name
+ ;
new_name: optional_stars F_IDENTIFIER
- {
- struct pike_string *type;
- push_finished_type(local_variables->current_type);
- while($1--) push_type(T_ARRAY);
- type=pop_type();
- define_variable($2, type, current_modifiers);
- free_string(type);
- free_string($2);
- }
- | optional_stars F_IDENTIFIER '='
- {
- struct pike_string *type;
- push_finished_type(local_variables->current_type);
- while($1--) push_type(T_ARRAY);
- type=pop_type();
- $<number>$=define_variable($2, type, current_modifiers);
- free_string(type);
- }
- expr0
- {
- init_node=mknode(F_ARG_LIST,init_node,
- mkcastnode(void_type_string, mknode(F_ASSIGN,$5,mkidentifiernode($<number>4))));
- free_string($2);
- } ;
+ {
+ struct pike_string *type;
+ push_finished_type(local_variables->current_type);
+ while($1--) push_type(T_ARRAY);
+ type=pop_type();
+ define_variable($2, type, current_modifiers);
+ free_string(type);
+ free_string($2);
+ }
+ | optional_stars F_IDENTIFIER '='
+ {
+ struct pike_string *type;
+ push_finished_type(local_variables->current_type);
+ while($1--) push_type(T_ARRAY);
+ type=pop_type();
+ $<number>$=define_variable($2, type, current_modifiers);
+ free_string(type);
+ }
+ expr0
+ {
+ init_node=mknode(F_ARG_LIST,init_node,
+ mkcastnode(void_type_string,
+ mknode(F_ASSIGN,$5,
+ mkidentifiernode($<number>4))));
+ free_string($2);
+ }
+ ;
new_local_name: optional_stars F_IDENTIFIER
- {
- push_finished_type(local_variables->current_type);
- while($1--) push_type(T_ARRAY);
- add_local_name($2, pop_type());
- $$=mkcastnode(void_type_string,
- mknode(F_ASSIGN,mkintnode(0),
- mklocalnode(islocal($2))));
- }
- | optional_stars F_IDENTIFIER '=' expr0
- {
- push_finished_type(local_variables->current_type);
- while($1--) push_type(T_ARRAY);
- add_local_name($2, pop_type());
- $$=mkcastnode(void_type_string,
- mknode(F_ASSIGN,$4,
- mklocalnode(islocal($2))));
-
- };
+ {
+ push_finished_type(local_variables->current_type);
+ while($1--) push_type(T_ARRAY);
+ add_local_name($2, pop_type());
+ $$=mknode(F_ASSIGN,mkintnode(0), mklocalnode(islocal($2)));
+ }
+ | optional_stars F_IDENTIFIER '=' expr0
+ {
+ push_finished_type(local_variables->current_type);
+ while($1--) push_type(T_ARRAY);
+ add_local_name($2, pop_type());
+ $$=mknode(F_ASSIGN,$4,mklocalnode(islocal($2)));
+ }
+ ;
block:'{'
- {
- $<number>$=local_variables->current_number_of_locals;
- }
- statements
- '}'
- {
- while(local_variables->current_number_of_locals > $<number>2)
- {
- int e;
- e=--(local_variables->current_number_of_locals);
- free_string(local_variables->variable[e].name);
- free_string(local_variables->variable[e].type);
- }
- $$=$3;
- } ;
+ {
+ $<number>$=local_variables->current_number_of_locals;
+ }
+ statements '}'
+ {
+ while(local_variables->current_number_of_locals > $<number>2)
+ {
+ int e;
+ e=--(local_variables->current_number_of_locals);
+ free_string(local_variables->variable[e].name);
+ free_string(local_variables->variable[e].type);
+ }
+ $$=$3;
+ }
+ ;
local_name_list: new_local_name
- | local_name_list ',' new_local_name
- {
- $$=mknode(F_ARG_LIST,$1,$3);
- }
- ;
+ | local_name_list ',' new_local_name { $$=mknode(F_ARG_LIST,$1,$3); }
+ ;
statements: { $$=0; }
- | statements statement
- {
- $$=mknode(F_ARG_LIST,$1,mkcastnode(void_type_string,$2));
- }
- ;
+ | statements statement
+ {
+ $$=mknode(F_ARG_LIST,$1,mkcastnode(void_type_string,$2));
+ }
+ ;
statement: unused2 ';' { $$=$1; }
- | simple_type
- {
- if(local_variables->current_type) free_string(local_variables->current_type);
- local_variables->current_type=$1;
- } local_name_list ';' { $$=$3; }
- | cond
- | while
- | do
- | for
- | switch
- | case
- | default
- | return ';'
- | block {}
- | foreach
- | break ';'
- | continue ';'
- | error ';' { $$=0; }
- | ';' { $$=0; }
- ;
+ | cond
+ | while
+ | do
+ | for
+ | switch
+ | case
+ | default
+ | return ';'
+ | block {}
+ | foreach
+ | break ';'
+ | continue ';'
+ | error ';' { $$=0; }
+ | ';' { $$=0; }
+ ;
break: F_BREAK { $$=mknode(F_BREAK,0,0); } ;
@@ -640,378 +718,369 @@ default: F_DEFAULT ':' { $$=mknode(F_DEFAULT,0,0); } ;
continue: F_CONTINUE { $$=mknode(F_CONTINUE,0,0); } ;
lambda: F_LAMBDA
- {
- push_locals();
- $<number>$=comp_stackp;
-
- if(local_variables->current_return_type)
- free_string(local_variables->current_return_type);
- copy_shared_string(local_variables->current_return_type,any_type_string);
- }
- '(' arguments ')' block
- {
- struct pike_string *type;
- char buf[40];
- int f,e,args,vargs;
- union idptr func;
- struct pike_string *name;
-
- setup_fake_program();
- fix_comp_stack($<number>2);
-
- push_type(T_MIXED);
-
- e=$4-1;
- if(varargs)
- {
- push_finished_type(local_variables->variable[e].type);
- e--;
- varargs=0;
- pop_type_stack();
- }else{
- push_type(T_VOID);
- }
- push_type(T_MANY);
- for(; e>=0; e--)
- push_finished_type(local_variables->variable[e].type);
-
- push_type(T_FUNCTION);
-
- type=pop_type();
- func.offset=PC;
-
- args=count_arguments(type);
- if(args < 0)
- {
- args=~args;
- vargs=IDENTIFIER_VARARGS;
- }else{
- vargs=0;
- }
- ins_byte(local_variables->max_number_of_locals, A_PROGRAM);
- ins_byte(args, A_PROGRAM);
-
- sprintf(buf,"__lambda_%ld",
- (long)fake_program.num_identifier_references);
- name=make_shared_string(buf);
- dooptcode(name,mknode(F_ARG_LIST,$6,mknode(F_RETURN,mkintnode(0),0)),$4);
- f=define_function(name,
- type,
- 0,
- IDENTIFIER_PIKE_FUNCTION | vargs,
- &func);
- free_string(name);
- free_string(type);
- pop_locals();
- $$=mkidentifiernode(f);
- } ;
+ {
+ push_locals();
+ $<number>$=comp_stackp;
+
+ if(local_variables->current_return_type)
+ free_string(local_variables->current_return_type);
+ copy_shared_string(local_variables->current_return_type,any_type_string);
+ }
+ '(' arguments ')' block
+ {
+ struct pike_string *type;
+ char buf[40];
+ int f,e,args,vargs;
+ union idptr func;
+ struct pike_string *name;
+
+ setup_fake_program();
+ fix_comp_stack($<number>2);
+
+ push_type(T_MIXED);
+
+ e=$4-1;
+ if(varargs)
+ {
+ push_finished_type(local_variables->variable[e].type);
+ e--;
+ varargs=0;
+ pop_type_stack();
+ }else{
+ push_type(T_VOID);
+ }
+ push_type(T_MANY);
+ for(; e>=0; e--)
+ push_finished_type(local_variables->variable[e].type);
+
+ push_type(T_FUNCTION);
+
+ type=pop_type();
+ func.offset=PC;
+
+ args=count_arguments(type);
+ if(args < 0)
+ {
+ args=~args;
+ vargs=IDENTIFIER_VARARGS;
+ }else{
+ vargs=0;
+ }
+ ins_byte(local_variables->max_number_of_locals, A_PROGRAM);
+ ins_byte(args, A_PROGRAM);
+
+ sprintf(buf,"__lambda_%ld",
+ (long)fake_program.num_identifier_references);
+ name=make_shared_string(buf);
+ dooptcode(name,mknode(F_ARG_LIST,$6,mknode(F_RETURN,mkintnode(0),0)),$4);
+ f=define_function(name,
+ type,
+ 0,
+ IDENTIFIER_PIKE_FUNCTION | vargs,
+ &func);
+ free_string(name);
+ free_string(type);
+ pop_locals();
+ $$=mkidentifiernode(f);
+ }
+ ;
class: F_CLASS '{'
- {
- start_new_program();
- }
- program
- '}'
- {
- struct svalue s;
- s.u.program=end_program();
- if(!s.u.program)
- {
- yyerror("Class definition failed.");
- s.type=T_INT;
- s.subtype=0;
- } else {
- s.type=T_PROGRAM;
- s.subtype=0;
- }
- $$=mksvaluenode(&s);
- free_svalue(&s);
- } ;
-
-cond: F_IF '(' comma_expr ')'
- statement
- optional_else_part
- {
- $$=mknode('?',$3,mknode(':',$5,$6));
- $$->line_number=$1;
- $$=mkcastnode(void_type_string,$$);
- $$->line_number=$1;
- }
- ;
+ {
+ start_new_program();
+ }
+ program '}'
+ {
+ struct svalue s;
+ s.u.program=end_program();
+ if(!s.u.program)
+ {
+ yyerror("Class definition failed.");
+ s.type=T_INT;
+ s.subtype=0;
+ } else {
+ s.type=T_PROGRAM;
+ s.subtype=0;
+ }
+ $$=mksvaluenode(&s);
+ free_svalue(&s);
+ }
+ ;
+
+cond: F_IF '(' comma_expr ')' statement optional_else_part
+ {
+ $$=mknode('?',$3,mknode(':',$5,$6));
+ $$->line_number=$1;
+ $$=mkcastnode(void_type_string,$$);
+ $$->line_number=$1;
+ }
+ ;
optional_else_part: { $$=0; }
- | F_ELSE statement { $$=$2; }
- ;
+ | F_ELSE statement { $$=$2; }
+ ;
-foreach: F_FOREACH '(' expr0 ',' expr4 ')'
- statement
- {
- $$=mknode(F_FOREACH,mknode(F_VAL_LVAL,$3,$5),$7);
- $$->line_number=$1;
- } ;
+foreach: F_FOREACH '(' expr0 ',' expr4 ')' statement
+ {
+ $$=mknode(F_FOREACH,mknode(F_VAL_LVAL,$3,$5),$7);
+ $$->line_number=$1;
+ }
+ ;
do: F_DO statement F_WHILE '(' comma_expr ')' ';'
- {
- $$=mknode(F_DO,$2,$5);
- $$->line_number=$1;
- } ;
-
+ {
+ $$=mknode(F_DO,$2,$5);
+ $$->line_number=$1;
+ }
+ ;
-for: F_FOR '(' unused ';' for_expr ';' unused ')'
- statement
- {
- int i=current_line;
- current_line=$1;
- $$=mknode(F_ARG_LIST,mkcastnode(void_type_string,$3),mknode(F_FOR,$5,mknode(':',$9,$7)));
- current_line=i;
- } ;
+for: F_FOR '(' unused ';' for_expr ';' unused ')' statement
+ {
+ int i=current_line;
+ current_line=$1;
+ $$=mknode(F_ARG_LIST,mkcastnode(void_type_string,$3),mknode(F_FOR,$5,mknode(':',$9,$7)));
+ current_line=i;
+ }
+ ;
-while: F_WHILE '(' comma_expr ')'
- statement
- {
- int i=current_line;
- current_line=$1;
- $$=mknode(F_FOR,$3,mknode(':',$5,NULL));
- current_line=i;
- } ;
+while: F_WHILE '(' comma_expr ')' statement
+ {
+ int i=current_line;
+ current_line=$1;
+ $$=mknode(F_FOR,$3,mknode(':',$5,NULL));
+ current_line=i;
+ }
+ ;
for_expr: /* EMPTY */ { $$=mkintnode(1); }
- | comma_expr;
+ | comma_expr
+ ;
-switch: F_SWITCH '(' comma_expr ')'
- statement
- {
- $$=mknode(F_SWITCH,$3,$5);
- $$->line_number=$1;
- } ;
+switch: F_SWITCH '(' comma_expr ')' statement
+ {
+ $$=mknode(F_SWITCH,$3,$5);
+ $$->line_number=$1;
+ }
+ ;
case: F_CASE comma_expr ':'
- {
- $$=mknode(F_CASE,$2,0);
- }
- | F_CASE comma_expr F_DOT_DOT comma_expr ':'
- {
- $$=mknode(F_CASE,$2,$4);
- }
- ;
+ {
+ $$=mknode(F_CASE,$2,0);
+ }
+ | F_CASE comma_expr F_DOT_DOT comma_expr ':'
+ {
+ $$=mknode(F_CASE,$2,$4);
+ }
+ ;
return: F_RETURN
- {
- if(!match_types(local_variables->current_return_type,
- void_type_string))
- {
- yyerror("Must return a value for a non-void function.");
- }
- $$=mknode(F_RETURN,mkintnode(0),0);
- }
- | F_RETURN comma_expr
- {
- $$=mknode(F_RETURN,$2,0);
- };
+ {
+ if(!match_types(local_variables->current_return_type,
+ void_type_string))
+ {
+ yyerror("Must return a value for a non-void function.");
+ }
+ $$=mknode(F_RETURN,mkintnode(0),0);
+ }
+ | F_RETURN comma_expr
+ {
+ $$=mknode(F_RETURN,$2,0);
+ }
+ ;
unused: { $$=0; }
- | unused2
- ;
-
-unused2: comma_expr
- {
- $$=mkcastnode(void_type_string,$1);
- }
- ;
-
-comma_expr: expr0
- | unused2 ',' expr0
- {
- $$ = mknode(F_ARG_LIST,mkcastnode(void_type_string,$1),$3);
- }
- ;
+ | unused2
+ ;
+
+unused2: comma_expr { $$=mkcastnode(void_type_string,$1); } ;
+
+comma_expr: comma_expr2
+ | type2
+ {
+ if(local_variables->current_type)
+ free_string(local_variables->current_type);
+ local_variables->current_type=pop_type();
+ } local_name_list { $$=$3; }
+ ;
+
+
+comma_expr2: expr0
+ | comma_expr2 ',' expr0
+ {
+ $$ = mknode(F_ARG_LIST,mkcastnode(void_type_string,$1),$3);
+ }
+ ;
expr00: expr0
- | '@' expr0
- {
- $$=mknode(F_PUSH_ARRAY,$2,0);
- };
+ | '@' expr0 { $$=mknode(F_PUSH_ARRAY,$2,0); };
expr0: expr01
- | expr4 '=' expr0
- {
- $$=mknode(F_ASSIGN,$3,$1);
- }
- | expr4 assign expr0
- {
- $$=mknode($2,$1,$3);
- }
- | error assign expr01
- {
- $$=0;
- };
+ | expr4 '=' expr0 { $$=mknode(F_ASSIGN,$3,$1); }
+ | expr4 assign expr0 { $$=mknode($2,$1,$3); }
+ | error assign expr01 { $$=0; }
+ ;
expr01: expr1 { $$ = $1; }
- | expr1 '?' expr01 ':' expr01
- {
- $$=mknode('?',$1,mknode(':',$3,$5));
- };
+ | expr1 '?' expr01 ':' expr01 { $$=mknode('?',$1,mknode(':',$3,$5)); }
+ ;
assign: F_AND_EQ { $$=F_AND_EQ; }
- | F_OR_EQ { $$=F_OR_EQ; }
- | F_XOR_EQ { $$=F_XOR_EQ; }
- | F_LSH_EQ { $$=F_LSH_EQ; }
- | F_RSH_EQ { $$=F_RSH_EQ; }
- | F_ADD_EQ { $$=F_ADD_EQ; }
- | F_SUB_EQ { $$=F_SUB_EQ; }
- | F_MULT_EQ{ $$=F_MULT_EQ; }
- | F_MOD_EQ { $$=F_MOD_EQ; }
- | F_DIV_EQ { $$=F_DIV_EQ; }
- ;
+ | F_OR_EQ { $$=F_OR_EQ; }
+ | F_XOR_EQ { $$=F_XOR_EQ; }
+ | F_LSH_EQ { $$=F_LSH_EQ; }
+ | F_RSH_EQ { $$=F_RSH_EQ; }
+ | F_ADD_EQ { $$=F_ADD_EQ; }
+ | F_SUB_EQ { $$=F_SUB_EQ; }
+ | F_MULT_EQ{ $$=F_MULT_EQ; }
+ | F_MOD_EQ { $$=F_MOD_EQ; }
+ | F_DIV_EQ { $$=F_DIV_EQ; }
+ ;
optional_comma: | ',' ;
expr_list: { $$=0; }
- | expr_list2 optional_comma { $$=$1; }
- ;
+ | expr_list2 optional_comma { $$=$1; }
+ ;
expr_list2: expr00
- | expr_list2 ',' expr00 { $$=mknode(F_ARG_LIST,$1,$3); }
- ;
+ | expr_list2 ',' expr00 { $$=mknode(F_ARG_LIST,$1,$3); }
+ ;
m_expr_list: { $$=0; }
- | m_expr_list2 optional_comma { $$=$1; }
- ;
+ | m_expr_list2 optional_comma { $$=$1; }
+ ;
m_expr_list2: assoc_pair
- | m_expr_list2 ',' assoc_pair { $$=mknode(F_ARG_LIST,$1,$3); }
- ;
+ | m_expr_list2 ',' assoc_pair { $$=mknode(F_ARG_LIST,$1,$3); }
+ ;
-assoc_pair: expr0 ':' expr1
- {
- $$=mknode(F_ARG_LIST,$1,$3);
- } ;
+assoc_pair: expr0 ':' expr1 { $$=mknode(F_ARG_LIST,$1,$3); } ;
expr1: expr2
- | expr1 F_LOR expr1 { $$=mknode(F_LOR,$1,$3); }
- | expr1 F_LAND expr1 { $$=mknode(F_LAND,$1,$3); }
- | expr1 '|' expr1 { $$=mkopernode("`|",$1,$3); }
- | expr1 '^' expr1 { $$=mkopernode("`^",$1,$3); }
- | expr1 '&' expr1 { $$=mkopernode("`&",$1,$3); }
- | expr1 F_EQ expr1 { $$=mkopernode("`==",$1,$3); }
- | expr1 F_NE expr1 { $$=mkopernode("`!=",$1,$3); }
- | expr1 '>' expr1 { $$=mkopernode("`>",$1,$3); }
- | expr1 F_GE expr1 { $$=mkopernode("`>=",$1,$3); }
- | expr1 '<' expr1 { $$=mkopernode("`<",$1,$3); }
- | expr1 F_LE expr1 { $$=mkopernode("`<=",$1,$3); }
- | expr1 F_LSH expr1 { $$=mkopernode("`<<",$1,$3); }
- | expr1 F_RSH expr1 { $$=mkopernode("`>>",$1,$3); }
- | expr1 '+' expr1 { $$=mkopernode("`+",$1,$3); }
- | expr1 '-' expr1 { $$=mkopernode("`-",$1,$3); }
- | expr1 '*' expr1 { $$=mkopernode("`*",$1,$3); }
- | expr1 '%' expr1 { $$=mkopernode("`%",$1,$3); }
- | expr1 '/' expr1 { $$=mkopernode("`/",$1,$3); }
- ;
+ | expr1 F_LOR expr1 { $$=mknode(F_LOR,$1,$3); }
+ | expr1 F_LAND expr1 { $$=mknode(F_LAND,$1,$3); }
+ | expr1 '|' expr1 { $$=mkopernode("`|",$1,$3); }
+ | expr1 '^' expr1 { $$=mkopernode("`^",$1,$3); }
+ | expr1 '&' expr1 { $$=mkopernode("`&",$1,$3); }
+ | expr1 F_EQ expr1 { $$=mkopernode("`==",$1,$3); }
+ | expr1 F_NE expr1 { $$=mkopernode("`!=",$1,$3); }
+ | expr1 '>' expr1 { $$=mkopernode("`>",$1,$3); }
+ | expr1 F_GE expr1 { $$=mkopernode("`>=",$1,$3); }
+ | expr1 '<' expr1 { $$=mkopernode("`<",$1,$3); }
+ | expr1 F_LE expr1 { $$=mkopernode("`<=",$1,$3); }
+ | expr1 F_LSH expr1 { $$=mkopernode("`<<",$1,$3); }
+ | expr1 F_RSH expr1 { $$=mkopernode("`>>",$1,$3); }
+ | expr1 '+' expr1 { $$=mkopernode("`+",$1,$3); }
+ | expr1 '-' expr1 { $$=mkopernode("`-",$1,$3); }
+ | expr1 '*' expr1 { $$=mkopernode("`*",$1,$3); }
+ | expr1 '%' expr1 { $$=mkopernode("`%",$1,$3); }
+ | expr1 '/' expr1 { $$=mkopernode("`/",$1,$3); }
+ ;
expr2: expr3
- | cast expr2
- {
- $$=mkcastnode($1,$2);
- free_string($1);
- }
- | F_INC expr4 { $$=mknode(F_INC,$2,0); }
- | F_DEC expr4 { $$=mknode(F_DEC,$2,0); }
- | F_NOT expr2 { $$=mkopernode("`!",$2,0); }
- | '~' expr2 { $$=mkopernode("`~",$2,0); }
- | '-' expr2 { $$=mkopernode("`-",$2,0); }
- ;
+ | cast expr2
+ {
+ $$=mkcastnode($1,$2);
+ free_string($1);
+ }
+ | F_INC expr4 { $$=mknode(F_INC,$2,0); }
+ | F_DEC expr4 { $$=mknode(F_DEC,$2,0); }
+ | F_NOT expr2 { $$=mkopernode("`!",$2,0); }
+ | '~' expr2 { $$=mkopernode("`~",$2,0); }
+ | '-' expr2 { $$=mkopernode("`-",$2,0); }
+ ;
expr3: expr4
- | expr4 F_INC { $$=mknode(F_POST_INC,$1,0); }
- | expr4 F_DEC { $$=mknode(F_POST_DEC,$1,0); }
- ;
+ | expr4 F_INC { $$=mknode(F_POST_INC,$1,0); }
+ | expr4 F_DEC { $$=mknode(F_POST_DEC,$1,0); }
+ ;
expr4: string
- | F_NUMBER { $$=mkintnode($1); }
- | F_FLOAT { $$=mkfloatnode($1); }
- | catch
- | gauge
- | typeof
- | sscanf
- | lambda
- | class
- | F_IDENTIFIER
- {
- int i;
- struct efun *f;
- if((i=islocal($1))>=0)
- {
- $$=mklocalnode(i);
- }else if((i=isidentifier($1))>=0){
- $$=mkidentifiernode(i);
- }else if((f=lookup_efun($1))){
+ | F_NUMBER { $$=mkintnode($1); }
+ | F_FLOAT { $$=mkfloatnode($1); }
+ | catch
+ | gauge
+ | typeof
+ | sscanf
+ | lambda
+ | class
+ | F_IDENTIFIER
+ {
+ int i;
+ struct efun *f;
+ if((i=islocal($1))>=0)
+ {
+ $$=mklocalnode(i);
+ }else if((i=isidentifier($1))>=0){
+ $$=mkidentifiernode(i);
+ }else if((f=lookup_efun($1))){
$$=mkconstantsvaluenode(&f->function);
- }else{
+ }else{
my_yyerror("'%s' undefined.",$1->str);
- $$=0;
- }
- free_string($1);
- }
- | F_PREDEF F_COLON_COLON F_IDENTIFIER
- {
- struct efun *f;
- f=lookup_efun($3);
- if(!f)
- {
+ $$=0;
+ }
+ free_string($1);
+ }
+ | F_PREDEF F_COLON_COLON F_IDENTIFIER
+ {
+ struct efun *f;
+ f=lookup_efun($3);
+ if(!f)
+ {
my_yyerror("Unknown efun: %s.",$3->str);
$$=mkintnode(0);
- }else{
+ }else{
$$=mksvaluenode(&f->function);
- }
- free_string($3);
- }
- | expr4 '(' expr_list ')' { $$=mkapplynode($1,$3); }
- | expr4 '[' expr0 ']' { $$=mknode(F_INDEX,$1,$3); }
- | expr4 '[' comma_expr_or_zero F_DOT_DOT comma_expr_or_maxint ']'
- {
- $$=mknode(F_RANGE,$1,mknode(F_ARG_LIST,$3,$5));
- }
- | '(' comma_expr ')' { $$=$2; }
- | '(' '{' expr_list '}' ')'
- { $$=mkefuncallnode("aggregate",$3); }
- | '(' '[' m_expr_list ']' ')'
- { $$=mkefuncallnode("aggregate_mapping",$3); };
- | F_MULTISET_START expr_list F_MULTISET_END
- { $$=mkefuncallnode("aggregate_multiset",$2); }
- | expr4 F_ARROW F_IDENTIFIER
- {
- $$=mknode(F_INDEX,$1,mkstrnode($3));
- free_string($3);
- }
- | F_IDENTIFIER F_COLON_COLON F_IDENTIFIER
- {
- int f;
- struct reference *idp;
-
- setup_fake_program();
- f=reference_inherited_identifier($1,$3);
- idp=fake_program.identifier_references+f;
- if (f<0 || ID_FROM_PTR(&fake_program,idp)->func.offset == -1)
- {
+ }
+ free_string($3);
+ }
+ | expr4 '(' expr_list ')' { $$=mkapplynode($1,$3); }
+ | expr4 '[' expr0 ']' { $$=mknode(F_INDEX,$1,$3); }
+ | expr4 '[' comma_expr_or_zero F_DOT_DOT comma_expr_or_maxint ']'
+ {
+ $$=mknode(F_RANGE,$1,mknode(F_ARG_LIST,$3,$5));
+ }
+ | '(' comma_expr2 ')' { $$=$2; }
+ | '(' '{' expr_list '}' ')'
+ { $$=mkefuncallnode("aggregate",$3); }
+ | '(' '[' m_expr_list ']' ')'
+ { $$=mkefuncallnode("aggregate_mapping",$3); };
+ | F_MULTISET_START expr_list F_MULTISET_END
+ { $$=mkefuncallnode("aggregate_multiset",$2); }
+ | expr4 F_ARROW F_IDENTIFIER
+ {
+ $$=mknode(F_INDEX,$1,mkstrnode($3));
+ free_string($3);
+ }
+ | F_IDENTIFIER F_COLON_COLON F_IDENTIFIER
+ {
+ int f;
+ struct reference *idp;
+
+ setup_fake_program();
+ f=reference_inherited_identifier($1,$3);
+ idp=fake_program.identifier_references+f;
+ if (f<0 || ID_FROM_PTR(&fake_program,idp)->func.offset == -1)
+ {
my_yyerror("Undefined identifier %s::%s", $1->str,$3->str);
$$=mkintnode(0);
- } else {
+ } else {
$$=mkidentifiernode(f);
- }
-
- free_string($1);
- free_string($3);
- }
- | F_COLON_COLON F_IDENTIFIER
- {
- int e,i;
-
- $$=0;
- setup_fake_program();
- for(e=1;e<(int)fake_program.num_inherits;e++)
- {
+ }
+
+ free_string($1);
+ free_string($3);
+ }
+ | F_COLON_COLON F_IDENTIFIER
+ {
+ int e,i;
+
+ $$=0;
+ setup_fake_program();
+ for(e=1;e<(int)fake_program.num_inherits;e++)
+ {
if(fake_program.inherits[e].inherit_level!=1) continue;
i=low_reference_inherited_identifier(e,$2);
if(i==-1) continue;
@@ -1021,24 +1090,24 @@ expr4: string
}else{
$$=mkidentifiernode(i);
}
- }
- if(!$$)
- {
+ }
+ if(!$$)
+ {
$$=mkintnode(0);
- }else{
+ }else{
if($$->token==F_ARG_LIST) $$=mkefuncallnode("aggregate",$$);
- }
- free_string($2);
- }
- ;
+ }
+ free_string($2);
+ }
+ ;
comma_expr_or_zero: /* empty */ { $$=mkintnode(0); }
- | comma_expr
- ;
+ | comma_expr
+ ;
comma_expr_or_maxint: /* empty */ { $$=mkintnode(0x7fffffff); }
- | comma_expr
- ;
+ | comma_expr
+ ;
gauge: F_GAUGE catch_arg
{
@@ -1052,48 +1121,39 @@ gauge: F_GAUGE catch_arg
} ;
typeof: F_TYPEOF '(' expr0 ')'
- {
- node *tmp;
- tmp=mknode(F_ARG_LIST,$3,0);
- $$=mkstrnode(describe_type($3->type));
- free_node(tmp);
- } ;
-
+ {
+ node *tmp;
+ tmp=mknode(F_ARG_LIST,$3,0);
+ $$=mkstrnode(describe_type($3->type));
+ free_node(tmp);
+ } ;
+
catch_arg: '(' comma_expr ')' { $$=$2; }
- | block
- ;
+ | block
+ ;
-catch: F_CATCH catch_arg
- {
- $$=mknode(F_CATCH,$2,NULL);
- } ;
+catch: F_CATCH catch_arg { $$=mknode(F_CATCH,$2,NULL); } ;
sscanf: F_SSCANF '(' expr0 ',' expr0 lvalue_list ')'
- {
- $$=mknode(F_SSCANF,mknode(F_ARG_LIST,$3,$5),$6);
- }
-
+ {
+ $$=mknode(F_SSCANF,mknode(F_ARG_LIST,$3,$5),$6);
+ }
+ ;
lvalue_list: /* empty */ { $$ = 0; }
- | ',' expr4 lvalue_list
- {
- $$ = mknode(F_LVALUE_LIST,$2,$3);
- } ;
+ | ',' expr4 lvalue_list { $$ = mknode(F_LVALUE_LIST,$2,$3); }
+ ;
low_string: F_STRING
- | low_string F_STRING
- {
- $$=add_shared_strings($1,$2);
- free_string($1);
- free_string($2);
- }
- ;
-
-string: low_string
- {
- $$=mkstrnode($1);
- free_string($1);
- } ;
+ | low_string F_STRING
+ {
+ $$=add_shared_strings($1,$2);
+ free_string($1);
+ free_string($2);
+ }
+ ;
+
+string: low_string { $$=mkstrnode($1); free_string($1); } ;
%%
--
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