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4ca4b423be
php-src/Zend/zend_language_parser.y
Nikita Popov 4ca4b423be Make lexer return AST nodes
2014-07-26 21:22:54 +02:00

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%{
/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 1998-2014 Zend Technologies Ltd. (http://www.zend.com) |
+----------------------------------------------------------------------+
| This source file is subject to version 2.00 of the Zend license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.zend.com/license/2_00.txt. |
| If you did not receive a copy of the Zend license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@zend.com so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andi Gutmans <andi@zend.com> |
| Zeev Suraski <zeev@zend.com> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
/*
* LALR shift/reduce conflicts and how they are resolved:
*
* - 2 shift/reduce conflicts due to the dangling elseif/else ambiguity. Solved by shift.
*
*/
#include "zend_compile.h"
#include "zend.h"
#include "zend_list.h"
#include "zend_globals.h"
#include "zend_API.h"
#include "zend_constants.h"
#define YYSIZE_T size_t
#define yytnamerr zend_yytnamerr
static YYSIZE_T zend_yytnamerr(char*, const char*);
#define YYERROR_VERBOSE
#define YYSTYPE znode
%}
%pure_parser
%expect 2
%code requires {
#ifdef ZTS
# define YYPARSE_PARAM tsrm_ls
# define YYLEX_PARAM tsrm_ls
#endif
}
%token END 0 "end of file"
%left T_INCLUDE T_INCLUDE_ONCE T_EVAL T_REQUIRE T_REQUIRE_ONCE
%token T_INCLUDE "include (T_INCLUDE)"
%token T_INCLUDE_ONCE "include_once (T_INCLUDE_ONCE)"
%token T_EVAL "eval (T_EVAL)"
%token T_REQUIRE "require (T_REQUIRE)"
%token T_REQUIRE_ONCE "require_once (T_REQUIRE_ONCE)"
%left ','
%left T_LOGICAL_OR
%token T_LOGICAL_OR "or (T_LOGICAL_OR)"
%left T_LOGICAL_XOR
%token T_LOGICAL_XOR "xor (T_LOGICAL_XOR)"
%left T_LOGICAL_AND
%token T_LOGICAL_AND "and (T_LOGICAL_AND)"
%right T_PRINT
%token T_PRINT "print (T_PRINT)"
%right T_YIELD
%token T_YIELD "yield (T_YIELD)"
%left '=' T_PLUS_EQUAL T_MINUS_EQUAL T_MUL_EQUAL T_DIV_EQUAL T_CONCAT_EQUAL T_MOD_EQUAL T_AND_EQUAL T_OR_EQUAL T_XOR_EQUAL T_SL_EQUAL T_SR_EQUAL T_POW_EQUAL
%token T_PLUS_EQUAL "+= (T_PLUS_EQUAL)"
%token T_MINUS_EQUAL "-= (T_MINUS_EQUAL)"
%token T_MUL_EQUAL "*= (T_MUL_EQUAL)"
%token T_DIV_EQUAL "/= (T_DIV_EQUAL)"
%token T_CONCAT_EQUAL ".= (T_CONCAT_EQUAL)"
%token T_MOD_EQUAL "%= (T_MOD_EQUAL)"
%token T_AND_EQUAL "&= (T_AND_EQUAL)"
%token T_OR_EQUAL "|= (T_OR_EQUAL)"
%token T_XOR_EQUAL "^= (T_XOR_EQUAL)"
%token T_SL_EQUAL "<<= (T_SL_EQUAL)"
%token T_SR_EQUAL ">>= (T_SR_EQUAL)"
%left '?' ':'
%left T_BOOLEAN_OR
%token T_BOOLEAN_OR "|| (T_BOOLEAN_OR)"
%left T_BOOLEAN_AND
%token T_BOOLEAN_AND "&& (T_BOOLEAN_AND)"
%left '|'
%left '^'
%left '&'
%nonassoc T_IS_EQUAL T_IS_NOT_EQUAL T_IS_IDENTICAL T_IS_NOT_IDENTICAL
%token T_IS_EQUAL "== (T_IS_EQUAL)"
%token T_IS_NOT_EQUAL "!= (T_IS_NOT_EQUAL)"
%token T_IS_IDENTICAL "=== (T_IS_IDENTICAL)"
%token T_IS_NOT_IDENTICAL "!== (T_IS_NOT_IDENTICAL)"
%nonassoc '<' T_IS_SMALLER_OR_EQUAL '>' T_IS_GREATER_OR_EQUAL
%token T_IS_SMALLER_OR_EQUAL "<= (T_IS_SMALLER_OR_EQUAL)"
%token T_IS_GREATER_OR_EQUAL ">= (T_IS_GREATER_OR_EQUAL)"
%left T_SL T_SR
%token T_SL "<< (T_SL)"
%token T_SR ">> (T_SR)"
%left '+' '-' '.'
%left '*' '/' '%'
%right '!'
%nonassoc T_INSTANCEOF
%token T_INSTANCEOF "instanceof (T_INSTANCEOF)"
%right '~' T_INC T_DEC T_INT_CAST T_DOUBLE_CAST T_STRING_CAST T_ARRAY_CAST T_OBJECT_CAST T_BOOL_CAST T_UNSET_CAST '@'
%right T_POW
%token T_INC "++ (T_INC)"
%token T_DEC "-- (T_DEC)"
%token T_INT_CAST "(int) (T_INT_CAST)"
%token T_DOUBLE_CAST "(double) (T_DOUBLE_CAST)"
%token T_STRING_CAST "(string) (T_STRING_CAST)"
%token T_ARRAY_CAST "(array) (T_ARRAY_CAST)"
%token T_OBJECT_CAST "(object) (T_OBJECT_CAST)"
%token T_BOOL_CAST "(bool) (T_BOOL_CAST)"
%token T_UNSET_CAST "(unset) (T_UNSET_CAST)"
%right '['
%nonassoc T_NEW T_CLONE
%token T_NEW "new (T_NEW)"
%token T_CLONE "clone (T_CLONE)"
%token T_EXIT "exit (T_EXIT)"
%token T_IF "if (T_IF)"
%left T_ELSEIF
%token T_ELSEIF "elseif (T_ELSEIF)"
%left T_ELSE
%token T_ELSE "else (T_ELSE)"
%left T_ENDIF
%token T_ENDIF "endif (T_ENDIF)"
%token T_LNUMBER "integer number (T_LNUMBER)"
%token T_DNUMBER "floating-point number (T_DNUMBER)"
%token T_STRING "identifier (T_STRING)"
%token T_STRING_VARNAME "variable name (T_STRING_VARNAME)"
%token T_VARIABLE "variable (T_VARIABLE)"
%token T_NUM_STRING "number (T_NUM_STRING)"
%token T_INLINE_HTML
%token T_CHARACTER
%token T_BAD_CHARACTER
%token T_ENCAPSED_AND_WHITESPACE "quoted-string and whitespace (T_ENCAPSED_AND_WHITESPACE)"
%token T_CONSTANT_ENCAPSED_STRING "quoted-string (T_CONSTANT_ENCAPSED_STRING)"
%token T_ECHO "echo (T_ECHO)"
%token T_DO "do (T_DO)"
%token T_WHILE "while (T_WHILE)"
%token T_ENDWHILE "endwhile (T_ENDWHILE)"
%token T_FOR "for (T_FOR)"
%token T_ENDFOR "endfor (T_ENDFOR)"
%token T_FOREACH "foreach (T_FOREACH)"
%token T_ENDFOREACH "endforeach (T_ENDFOREACH)"
%token T_DECLARE "declare (T_DECLARE)"
%token T_ENDDECLARE "enddeclare (T_ENDDECLARE)"
%token T_AS "as (T_AS)"
%token T_SWITCH "switch (T_SWITCH)"
%token T_ENDSWITCH "endswitch (T_ENDSWITCH)"
%token T_CASE "case (T_CASE)"
%token T_DEFAULT "default (T_DEFAULT)"
%token T_BREAK "break (T_BREAK)"
%token T_CONTINUE "continue (T_CONTINUE)"
%token T_GOTO "goto (T_GOTO)"
%token T_FUNCTION "function (T_FUNCTION)"
%token T_CONST "const (T_CONST)"
%token T_RETURN "return (T_RETURN)"
%token T_TRY "try (T_TRY)"
%token T_CATCH "catch (T_CATCH)"
%token T_FINALLY "finally (T_FINALLY)"
%token T_THROW "throw (T_THROW)"
%token T_USE "use (T_USE)"
%token T_INSTEADOF "insteadof (T_INSTEADOF)"
%token T_GLOBAL "global (T_GLOBAL)"
%right T_STATIC T_ABSTRACT T_FINAL T_PRIVATE T_PROTECTED T_PUBLIC
%token T_STATIC "static (T_STATIC)"
%token T_ABSTRACT "abstract (T_ABSTRACT)"
%token T_FINAL "final (T_FINAL)"
%token T_PRIVATE "private (T_PRIVATE)"
%token T_PROTECTED "protected (T_PROTECTED)"
%token T_PUBLIC "public (T_PUBLIC)"
%token T_VAR "var (T_VAR)"
%token T_UNSET "unset (T_UNSET)"
%token T_ISSET "isset (T_ISSET)"
%token T_EMPTY "empty (T_EMPTY)"
%token T_HALT_COMPILER "__halt_compiler (T_HALT_COMPILER)"
%token T_CLASS "class (T_CLASS)"
%token T_TRAIT "trait (T_TRAIT)"
%token T_INTERFACE "interface (T_INTERFACE)"
%token T_EXTENDS "extends (T_EXTENDS)"
%token T_IMPLEMENTS "implements (T_IMPLEMENTS)"
%token T_OBJECT_OPERATOR "-> (T_OBJECT_OPERATOR)"
%right T_DOUBLE_ARROW
%token T_DOUBLE_ARROW "=> (T_DOUBLE_ARROW)"
%token T_LIST "list (T_LIST)"
%token T_ARRAY "array (T_ARRAY)"
%token T_CALLABLE "callable (T_CALLABLE)"
%token T_CLASS_C "__CLASS__ (T_CLASS_C)"
%token T_TRAIT_C "__TRAIT__ (T_TRAIT_C)"
%token T_METHOD_C "__METHOD__ (T_METHOD_C)"
%token T_FUNC_C "__FUNCTION__ (T_FUNC_C)"
%token T_LINE "__LINE__ (T_LINE)"
%token T_FILE "__FILE__ (T_FILE)"
%token T_COMMENT "comment (T_COMMENT)"
%token T_DOC_COMMENT "doc comment (T_DOC_COMMENT)"
%token T_OPEN_TAG "open tag (T_OPEN_TAG)"
%token T_OPEN_TAG_WITH_ECHO "open tag with echo (T_OPEN_TAG_WITH_ECHO)"
%token T_CLOSE_TAG "close tag (T_CLOSE_TAG)"
%token T_WHITESPACE "whitespace (T_WHITESPACE)"
%token T_START_HEREDOC "heredoc start (T_START_HEREDOC)"
%token T_END_HEREDOC "heredoc end (T_END_HEREDOC)"
%token T_DOLLAR_OPEN_CURLY_BRACES "${ (T_DOLLAR_OPEN_CURLY_BRACES)"
%token T_CURLY_OPEN "{$ (T_CURLY_OPEN)"
%token T_PAAMAYIM_NEKUDOTAYIM ":: (T_PAAMAYIM_NEKUDOTAYIM)"
%token T_NAMESPACE "namespace (T_NAMESPACE)"
%token T_NS_C "__NAMESPACE__ (T_NS_C)"
%token T_DIR "__DIR__ (T_DIR)"
%token T_NS_SEPARATOR "\\ (T_NS_SEPARATOR)"
%token T_ELLIPSIS "... (T_ELLIPSIS)"
%token T_POW "** (T_POW)"
%token T_POW_EQUAL "**= (T_POW_EQUAL)"
%% /* Rules */
start:
top_statement_list { CG(ast) = $1.u.ast; }
;
top_statement_list:
top_statement_list top_statement { $$.u.ast = zend_ast_dynamic_add($1.u.ast, $2.u.ast); }
| /* empty */ { $$.u.ast = zend_ast_create_dynamic(ZEND_AST_STMT_LIST); }
;
namespace_name:
T_STRING { zval zv; ZVAL_COPY_VALUE(&zv, zend_ast_get_zval($1.u.ast)); $1.op_type = IS_CONST; ZVAL_COPY_VALUE(&$1.u.constant, &zv); $$ = $1; }
| namespace_name T_NS_SEPARATOR T_STRING { zval zv; ZVAL_COPY_VALUE(&zv, zend_ast_get_zval($3.u.ast)); $3.op_type = IS_CONST; ZVAL_COPY_VALUE(&$3.u.constant, &zv); zend_do_build_namespace_name(&$$, &$1, &$3 TSRMLS_CC); }
;
name:
namespace_name
{ $$.u.ast = zend_ast_create_zval_ex(&$1.u.constant, ZEND_NAME_NOT_FQ); }
| T_NAMESPACE T_NS_SEPARATOR namespace_name
{ $$.u.ast = zend_ast_create_zval_ex(&$3.u.constant, ZEND_NAME_RELATIVE); }
| T_NS_SEPARATOR namespace_name
{ $$.u.ast = zend_ast_create_zval_ex(&$2.u.constant, ZEND_NAME_FQ); }
;
top_statement:
statement { $$.u.ast = $1.u.ast; }
| function_declaration_statement { $$.u.ast = $1.u.ast; }
| class_declaration_statement { $$.u.ast = $1.u.ast; }
| T_HALT_COMPILER '(' ')' ';'
{ $$.u.ast = zend_ast_create_unary(ZEND_AST_HALT_COMPILER,
zend_ast_create_zval_from_long(zend_get_scanned_file_offset(TSRMLS_C)));
zend_stop_lexing(TSRMLS_C); }
| T_NAMESPACE namespace_name ';'
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_NAMESPACE, AST_ZVAL(&$2), NULL);
zend_discard_doc_comment(TSRMLS_C); }
| T_NAMESPACE namespace_name { zend_discard_doc_comment(TSRMLS_C); }
'{' top_statement_list '}'
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_NAMESPACE, AST_ZVAL(&$2), $5.u.ast); }
| T_NAMESPACE { zend_discard_doc_comment(TSRMLS_C); }
'{' top_statement_list '}'
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_NAMESPACE, NULL, $4.u.ast); }
| T_USE use_declarations ';'
{ $$.u.ast = $2.u.ast; $$.u.ast->attr = T_CLASS; }
| T_USE T_FUNCTION use_declarations ';'
{ $$.u.ast = $3.u.ast; $$.u.ast->attr = T_FUNCTION; }
| T_USE T_CONST use_declarations ';'
{ $$.u.ast = $3.u.ast; $$.u.ast->attr = T_CONST; }
| T_CONST const_list ';' { $$.u.ast = $2.u.ast; }
;
use_declarations:
use_declarations ',' use_declaration
{ $$.u.ast = zend_ast_dynamic_add($1.u.ast, $3.u.ast); }
| use_declaration
{ $$.u.ast = zend_ast_create_dynamic_and_add(ZEND_AST_USE, $1.u.ast); }
;
use_declaration:
namespace_name
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_USE_ELEM, AST_ZVAL(&$1), NULL); }
| namespace_name T_AS T_STRING
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_USE_ELEM, AST_ZVAL(&$1), $3.u.ast); }
| T_NS_SEPARATOR namespace_name
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_USE_ELEM, AST_ZVAL(&$2), NULL); }
| T_NS_SEPARATOR namespace_name T_AS T_STRING
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_USE_ELEM, AST_ZVAL(&$2), $4.u.ast); }
;
const_list:
const_list ',' const_decl { $$.u.ast = zend_ast_dynamic_add($1.u.ast, $3.u.ast); }
| const_decl
{ $$.u.ast = zend_ast_create_dynamic_and_add(ZEND_AST_CONST_DECL, $1.u.ast); }
;
inner_statement_list:
inner_statement_list inner_statement
{ $$.u.ast = zend_ast_dynamic_add($1.u.ast, $2.u.ast); }
| /* empty */
{ $$.u.ast = zend_ast_create_dynamic(ZEND_AST_STMT_LIST); }
;
inner_statement:
statement { $$.u.ast = $1.u.ast; }
| function_declaration_statement { $$.u.ast = $1.u.ast; }
| class_declaration_statement { $$.u.ast = $1.u.ast; }
| T_HALT_COMPILER '(' ')' ';'
{ zend_error_noreturn(E_COMPILE_ERROR, "__HALT_COMPILER() can only be used from the outermost scope"); }
;
statement:
unticked_statement { $$.u.ast = $1.u.ast; }
| T_STRING ':' { $$.u.ast = zend_ast_create_unary(ZEND_AST_LABEL, $1.u.ast); }
;
unticked_statement:
'{' inner_statement_list '}' { $$.u.ast = $2.u.ast; }
| if_stmt { $$.u.ast = $1.u.ast; }
| alt_if_stmt { $$.u.ast = $1.u.ast; }
| T_WHILE parenthesis_expr while_statement
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_WHILE, $2.u.ast, $3.u.ast); }
| T_DO statement T_WHILE parenthesis_expr ';'
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_DO_WHILE, $2.u.ast, $4.u.ast); }
| T_FOR '(' for_expr ';' for_expr ';' for_expr ')' for_statement
{ $$.u.ast = zend_ast_create(4, ZEND_AST_FOR, $3.u.ast, $5.u.ast, $7.u.ast, $9.u.ast); }
| T_SWITCH parenthesis_expr switch_case_list
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_SWITCH, $2.u.ast, $3.u.ast); }
| T_BREAK ';' { $$.u.ast = zend_ast_create_unary(ZEND_BRK, NULL); }
| T_BREAK expr ';' { $$.u.ast = zend_ast_create_unary(ZEND_BRK, $2.u.ast); }
| T_CONTINUE ';' { $$.u.ast = zend_ast_create_unary(ZEND_CONT, NULL); }
| T_CONTINUE expr ';' { $$.u.ast = zend_ast_create_unary(ZEND_CONT, $2.u.ast); }
| T_RETURN ';'
{ $$.u.ast = zend_ast_create_unary(ZEND_AST_RETURN, NULL); }
| T_RETURN expr ';'
{ $$.u.ast = zend_ast_create_unary(ZEND_AST_RETURN, $2.u.ast); }
| T_GLOBAL global_var_list ';' { $$.u.ast = $2.u.ast; }
| T_STATIC static_var_list ';' { $$.u.ast = $2.u.ast; }
| T_ECHO echo_expr_list ';' { $$.u.ast = $2.u.ast; }
| T_INLINE_HTML { $$.u.ast = zend_ast_create_unary(ZEND_ECHO, $1.u.ast); }
| expr ';' { $$.u.ast = $1.u.ast; }
| T_UNSET '(' unset_variables ')' ';' { $$.u.ast = $3.u.ast; }
| T_FOREACH '(' expr T_AS foreach_variable ')' foreach_statement
{ $$.u.ast = zend_ast_create(4, ZEND_AST_FOREACH,
$3.u.ast, $5.u.ast, NULL, $7.u.ast); }
| T_FOREACH '(' expr T_AS foreach_variable T_DOUBLE_ARROW foreach_variable ')'
foreach_statement
{ $$.u.ast = zend_ast_create(4, ZEND_AST_FOREACH,
$3.u.ast, $7.u.ast, $5.u.ast, $9.u.ast); }
| T_DECLARE '(' const_list ')' declare_statement
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_DECLARE, $3.u.ast, $5.u.ast); }
| ';' /* empty statement */ { $$.u.ast = NULL; }
| T_TRY '{' inner_statement_list '}' catch_list finally_statement
{ $$.u.ast = zend_ast_create_ternary(ZEND_AST_TRY, $3.u.ast, $5.u.ast, $6.u.ast); }
| T_THROW expr ';' { $$.u.ast = zend_ast_create_unary(ZEND_THROW, $2.u.ast); }
| T_GOTO T_STRING ';' { $$.u.ast = zend_ast_create_unary(ZEND_GOTO, $2.u.ast); }
;
catch_list:
/* empty */
{ $$.u.ast = zend_ast_create_dynamic(ZEND_AST_CATCH_LIST); }
| catch_list T_CATCH '(' name T_VARIABLE ')' '{' inner_statement_list '}'
{ $$.u.ast = zend_ast_dynamic_add($1.u.ast,
zend_ast_create_ternary(ZEND_AST_CATCH, $4.u.ast, $5.u.ast, $8.u.ast)); }
;
finally_statement:
/* empty */ { $$.u.ast = NULL; }
| T_FINALLY '{' inner_statement_list '}' { $$.u.ast = $3.u.ast; }
;
unset_variables:
unset_variable { $$.u.ast = zend_ast_create_dynamic_and_add(ZEND_AST_STMT_LIST, $1.u.ast); }
| unset_variables ',' unset_variable { $$.u.ast = zend_ast_dynamic_add($1.u.ast, $3.u.ast); }
;
unset_variable:
variable { $$.u.ast = zend_ast_create_unary(ZEND_AST_UNSET, $1.u.ast); }
;
function_declaration_statement:
function returns_ref T_STRING '(' parameter_list ')' '{' inner_statement_list '}'
{ $$.u.ast = zend_ast_create_decl(ZEND_AST_FUNC_DECL, $2.EA,
$1.EA, CG(zend_lineno), LANG_SCNG(yy_text), $1.u.op.ptr,
zend_ast_get_str($3.u.ast), $5.u.ast, NULL, $8.u.ast); }
;
is_reference:
/* empty */ { $$.op_type = 0; }
| '&' { $$.op_type = ZEND_PARAM_REF; }
;
is_variadic:
/* empty */ { $$.op_type = 0; }
| T_ELLIPSIS { $$.op_type = ZEND_PARAM_VARIADIC; }
;
class_declaration_statement:
class_entry_type T_STRING extends_from implements_list
{ $$.u.op.ptr = CG(doc_comment); CG(doc_comment) = NULL; }
'{' class_statement_list '}'
{ $$.u.ast = zend_ast_create_decl(ZEND_AST_CLASS, $1.EA, $1.u.op.opline_num,
CG(zend_lineno), LANG_SCNG(yy_text), $5.u.op.ptr,
zend_ast_get_str($2.u.ast), $3.u.ast, $4.u.ast, $7.u.ast); }
| interface_entry T_STRING interface_extends_list
{ $$.u.op.ptr = CG(doc_comment); CG(doc_comment) = NULL; }
'{' class_statement_list '}'
{ $$.u.ast = zend_ast_create_decl(ZEND_AST_CLASS, $1.EA, $1.u.op.opline_num,
CG(zend_lineno), LANG_SCNG(yy_text), $4.u.op.ptr,
zend_ast_get_str($2.u.ast), NULL, $3.u.ast, $6.u.ast); }
;
class_entry_type:
T_CLASS { $$.u.op.opline_num = CG(zend_lineno); $$.EA = 0; }
| T_ABSTRACT T_CLASS { $$.u.op.opline_num = CG(zend_lineno); $$.EA = ZEND_ACC_EXPLICIT_ABSTRACT_CLASS; }
| T_TRAIT { $$.u.op.opline_num = CG(zend_lineno); $$.EA = ZEND_ACC_TRAIT; }
| T_FINAL T_CLASS { $$.u.op.opline_num = CG(zend_lineno); $$.EA = ZEND_ACC_FINAL_CLASS; }
;
interface_entry:
T_INTERFACE { $$.u.op.opline_num = CG(zend_lineno); $$.EA = ZEND_ACC_INTERFACE; }
;
extends_from:
/* empty */ { $$.u.ast = NULL; }
| T_EXTENDS name { $$.u.ast = $2.u.ast; }
;
interface_extends_list:
/* empty */ { $$.u.ast = NULL; }
| T_EXTENDS name_list { $$.u.ast = $2.u.ast; }
;
implements_list:
/* empty */ { $$.u.ast = NULL; }
| T_IMPLEMENTS name_list { $$.u.ast = $2.u.ast; }
;
foreach_variable:
variable { $$.u.ast = $1.u.ast; }
| '&' variable { $$.u.ast = zend_ast_create_unary(ZEND_AST_REF, $2.u.ast); }
| T_LIST '(' assignment_list ')' { $$.u.ast = $3.u.ast; }
;
for_statement:
statement { $$.u.ast = $1.u.ast; }
| ':' inner_statement_list T_ENDFOR ';' { $$.u.ast = $2.u.ast; }
;
foreach_statement:
statement { $$.u.ast = $1.u.ast; }
| ':' inner_statement_list T_ENDFOREACH ';' { $$.u.ast = $2.u.ast; }
;
declare_statement:
statement { $$.u.ast = $1.u.ast; }
| ':' inner_statement_list T_ENDDECLARE ';' { $$.u.ast = $2.u.ast; }
;
switch_case_list:
'{' case_list '}' { $$.u.ast = $2.u.ast; }
| '{' ';' case_list '}' { $$.u.ast = $3.u.ast; }
| ':' case_list T_ENDSWITCH ';' { $$.u.ast = $2.u.ast; }
| ':' ';' case_list T_ENDSWITCH ';' { $$.u.ast = $3.u.ast; }
;
case_list:
/* empty */ { $$.u.ast = zend_ast_create_dynamic(ZEND_AST_SWITCH_LIST); }
| case_list T_CASE expr case_separator inner_statement_list
{ $$.u.ast = zend_ast_dynamic_add($1.u.ast,
zend_ast_create_binary(ZEND_AST_SWITCH_CASE, $3.u.ast, $5.u.ast)); }
| case_list T_DEFAULT case_separator inner_statement_list
{ $$.u.ast = zend_ast_dynamic_add($1.u.ast,
zend_ast_create_binary(ZEND_AST_SWITCH_CASE, NULL, $4.u.ast)); }
;
case_separator:
':'
| ';'
;
while_statement:
statement { $$.u.ast = $1.u.ast; }
| ':' inner_statement_list T_ENDWHILE ';' { $$.u.ast = $2.u.ast; }
;
if_stmt_without_else:
T_IF parenthesis_expr statement
{ $$.u.ast = zend_ast_create_dynamic_and_add(ZEND_AST_IF,
zend_ast_create_binary(ZEND_AST_IF_ELEM, $2.u.ast, $3.u.ast)); }
| if_stmt_without_else T_ELSEIF parenthesis_expr statement
{ $$.u.ast = zend_ast_dynamic_add($1.u.ast,
zend_ast_create_binary(ZEND_AST_IF_ELEM, $3.u.ast, $4.u.ast)); }
;
if_stmt:
if_stmt_without_else { $$.u.ast = $1.u.ast; }
| if_stmt_without_else T_ELSE statement
{ $$.u.ast = zend_ast_dynamic_add($1.u.ast,
zend_ast_create_binary(ZEND_AST_IF_ELEM, NULL, $3.u.ast)); }
;
alt_if_stmt_without_else:
T_IF parenthesis_expr ':' inner_statement_list
{ $$.u.ast = zend_ast_create_dynamic_and_add(ZEND_AST_IF,
zend_ast_create_binary(ZEND_AST_IF_ELEM, $2.u.ast, $4.u.ast)); }
| alt_if_stmt_without_else T_ELSEIF parenthesis_expr ':' inner_statement_list
{ $$.u.ast = zend_ast_dynamic_add($1.u.ast,
zend_ast_create_binary(ZEND_AST_IF_ELEM, $3.u.ast, $5.u.ast)); }
;
alt_if_stmt:
alt_if_stmt_without_else T_ENDIF ';' { $$.u.ast = $1.u.ast; }
| alt_if_stmt_without_else T_ELSE ':' inner_statement_list T_ENDIF ';'
{ $$.u.ast = zend_ast_dynamic_add($1.u.ast,
zend_ast_create_binary(ZEND_AST_IF_ELEM, NULL, $4.u.ast)); }
;
parameter_list:
non_empty_parameter_list { $$.u.ast = $1.u.ast; }
| /* empty */ { $$.u.ast = zend_ast_create_dynamic(ZEND_AST_PARAM_LIST); }
;
non_empty_parameter_list:
parameter
{ $$.u.ast = zend_ast_create_dynamic_and_add(ZEND_AST_PARAM_LIST, $1.u.ast); }
| non_empty_parameter_list ',' parameter
{ $$.u.ast = zend_ast_dynamic_add($1.u.ast, $3.u.ast); }
;
parameter:
optional_type is_reference is_variadic T_VARIABLE
{ $$.u.ast = zend_ast_create_ex(3, ZEND_AST_PARAM, $2.op_type | $3.op_type,
$1.u.ast, $4.u.ast, NULL); }
| optional_type is_reference is_variadic T_VARIABLE '=' expr
{ $$.u.ast = zend_ast_create_ex(3, ZEND_AST_PARAM, $2.op_type | $3.op_type,
$1.u.ast, $4.u.ast, $6.u.ast); }
;
optional_type:
/* empty */ { $$.u.ast = NULL; }
| T_ARRAY { $$.u.ast = zend_ast_create_ex(0, ZEND_AST_TYPE, IS_ARRAY); }
| T_CALLABLE { $$.u.ast = zend_ast_create_ex(0, ZEND_AST_TYPE, IS_CALLABLE); }
| name { $$.u.ast = $1.u.ast; }
;
argument_list:
'(' ')' { $$.u.ast = zend_ast_create_dynamic(ZEND_AST_ARG_LIST); }
| '(' non_empty_argument_list ')' { $$.u.ast = $2.u.ast; }
;
non_empty_argument_list:
argument
{ $$.u.ast = zend_ast_create_dynamic_and_add(ZEND_AST_ARG_LIST, $1.u.ast); }
| non_empty_argument_list ',' argument
{ $$.u.ast = zend_ast_dynamic_add($1.u.ast, $3.u.ast); }
;
argument:
expr_without_variable { $$.u.ast = $1.u.ast; }
| variable { $$.u.ast = $1.u.ast; }
/*| '&' variable { ZEND_ASSERT(0); } */
| T_ELLIPSIS expr { $$.u.ast = zend_ast_create_unary(ZEND_AST_UNPACK, $2.u.ast); }
;
global_var_list:
global_var_list ',' global_var { $$.u.ast = zend_ast_dynamic_add($1.u.ast, $3.u.ast); }
| global_var { $$.u.ast = zend_ast_create_dynamic_and_add(ZEND_AST_STMT_LIST, $1.u.ast); }
;
global_var:
simple_variable
{ $$.u.ast = zend_ast_create_unary(ZEND_AST_GLOBAL,
zend_ast_create_unary(ZEND_AST_VAR, $1.u.ast)); }
;
static_var_list:
static_var_list ',' static_var { $$.u.ast = zend_ast_dynamic_add($1.u.ast, $3.u.ast); }
| static_var { $$.u.ast = zend_ast_create_dynamic_and_add(ZEND_AST_STMT_LIST, $1.u.ast); }
;
static_var:
T_VARIABLE
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_STATIC, $1.u.ast, NULL); }
| T_VARIABLE '=' expr
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_STATIC, $1.u.ast, $3.u.ast); }
;
class_statement_list:
class_statement_list class_statement
{ $$.u.ast = zend_ast_dynamic_add($1.u.ast, $2.u.ast); }
| /* empty */
{ $$.u.ast = zend_ast_create_dynamic(ZEND_AST_STMT_LIST); }
;
class_statement:
variable_modifiers property_list ';'
{ $$.u.ast = $2.u.ast; $$.u.ast->attr = Z_LVAL($1.u.constant); }
| T_CONST class_const_list ';'
{ $$.u.ast = $2.u.ast; zend_discard_doc_comment(TSRMLS_C); }
| T_USE name_list trait_adaptations
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_USE_TRAIT, $2.u.ast, $3.u.ast); }
| method_modifiers function returns_ref T_STRING '(' parameter_list ')' method_body
{ $$.u.ast = zend_ast_create_decl(ZEND_AST_METHOD, $3.EA | Z_LVAL($1.u.constant),
$2.EA, CG(zend_lineno), LANG_SCNG(yy_text), $2.u.op.ptr,
zend_ast_get_str($4.u.ast), $6.u.ast, NULL, $8.u.ast); }
;
name_list:
name { $$.u.ast = zend_ast_create_dynamic_and_add(ZEND_AST_NAME_LIST, $1.u.ast); }
| name_list ',' name { $$.u.ast = zend_ast_dynamic_add($1.u.ast, $3.u.ast); }
;
trait_adaptations:
';' { $$.u.ast = NULL; }
| '{' '}' { $$.u.ast = NULL; }
| '{' trait_adaptation_list '}' { $$.u.ast = $2.u.ast; }
;
trait_adaptation_list:
trait_adaptation
{ $$.u.ast = zend_ast_create_dynamic_and_add(ZEND_AST_TRAIT_ADAPTATIONS, $1.u.ast); }
| trait_adaptation_list trait_adaptation
{ $$.u.ast = zend_ast_dynamic_add($1.u.ast, $2.u.ast); }
;
trait_adaptation:
trait_precedence ';' { $$.u.ast = $1.u.ast; }
| trait_alias ';' { $$.u.ast = $1.u.ast; }
;
trait_precedence:
absolute_trait_method_reference T_INSTEADOF name_list
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_TRAIT_PRECEDENCE, $1.u.ast, $3.u.ast); }
;
trait_alias:
trait_method_reference T_AS trait_modifiers T_STRING
{ $$.u.ast = zend_ast_create_ex(2, ZEND_AST_TRAIT_ALIAS,
Z_LVAL($3.u.constant), $1.u.ast, $4.u.ast); }
| trait_method_reference T_AS member_modifier
{ $$.u.ast = zend_ast_create_ex(2, ZEND_AST_TRAIT_ALIAS,
Z_LVAL($3.u.constant), $1.u.ast, NULL); }
;
trait_method_reference:
T_STRING
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_METHOD_REFERENCE, NULL, $1.u.ast); }
| absolute_trait_method_reference { $$.u.ast = $1.u.ast; }
;
absolute_trait_method_reference:
name T_PAAMAYIM_NEKUDOTAYIM T_STRING
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_METHOD_REFERENCE, $1.u.ast, $3.u.ast); }
;
trait_modifiers:
/* empty */ { Z_LVAL($$.u.constant) = 0; }
| member_modifier { $$ = $1; }
;
method_body:
';' /* abstract method */ { $$.u.ast = NULL; }
| '{' inner_statement_list '}' { $$.u.ast = $2.u.ast; }
;
variable_modifiers:
non_empty_member_modifiers { $$ = $1; }
| T_VAR { Z_LVAL($$.u.constant) = ZEND_ACC_PUBLIC; }
;
method_modifiers:
/* empty */ { Z_LVAL($$.u.constant) = ZEND_ACC_PUBLIC; }
| non_empty_member_modifiers { $$ = $1; if (!(Z_LVAL($$.u.constant) & ZEND_ACC_PPP_MASK)) { Z_LVAL($$.u.constant) |= ZEND_ACC_PUBLIC; } }
;
non_empty_member_modifiers:
member_modifier { $$ = $1; }
| non_empty_member_modifiers member_modifier { Z_LVAL($$.u.constant) = zend_do_verify_access_types(&$1, &$2); }
;
member_modifier:
T_PUBLIC { Z_LVAL($$.u.constant) = ZEND_ACC_PUBLIC; }
| T_PROTECTED { Z_LVAL($$.u.constant) = ZEND_ACC_PROTECTED; }
| T_PRIVATE { Z_LVAL($$.u.constant) = ZEND_ACC_PRIVATE; }
| T_STATIC { Z_LVAL($$.u.constant) = ZEND_ACC_STATIC; }
| T_ABSTRACT { Z_LVAL($$.u.constant) = ZEND_ACC_ABSTRACT; }
| T_FINAL { Z_LVAL($$.u.constant) = ZEND_ACC_FINAL; }
;
property_list:
property_list ',' property { $$.u.ast = zend_ast_dynamic_add($1.u.ast, $3.u.ast); }
| property { $$.u.ast = zend_ast_create_dynamic_and_add(ZEND_AST_PROP_DECL, $1.u.ast); }
;
property:
T_VARIABLE { $$.u.ast = zend_ast_create_binary(ZEND_AST_PROP_ELEM, $1.u.ast, NULL); }
| T_VARIABLE '=' expr
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_PROP_ELEM, $1.u.ast, $3.u.ast); }
;
class_const_list:
class_const_list ',' const_decl { $$.u.ast = zend_ast_dynamic_add($1.u.ast, $3.u.ast); }
| const_decl
{ $$.u.ast = zend_ast_create_dynamic_and_add(ZEND_AST_CLASS_CONST_DECL, $1.u.ast); }
;
const_decl:
T_STRING '=' expr
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_CONST_ELEM, $1.u.ast, $3.u.ast); }
;
echo_expr_list:
echo_expr_list ',' echo_expr { $$.u.ast = zend_ast_dynamic_add($1.u.ast, $3.u.ast); }
| echo_expr { $$.u.ast = zend_ast_create_dynamic_and_add(ZEND_AST_STMT_LIST, $1.u.ast); }
;
echo_expr:
expr { $$.u.ast = zend_ast_create_unary(ZEND_ECHO, $1.u.ast); }
;
for_expr:
/* empty */ { $$.u.ast = NULL; }
| non_empty_for_expr { $$.u.ast = $1.u.ast; }
;
non_empty_for_expr:
non_empty_for_expr ',' expr { $$.u.ast = zend_ast_dynamic_add($1.u.ast, $3.u.ast); }
| expr { $$.u.ast = zend_ast_create_dynamic_and_add(ZEND_AST_EXPR_LIST, $1.u.ast); }
;
new_expr:
T_NEW class_name_reference ctor_arguments
{ $$.u.ast = zend_ast_create_binary(ZEND_NEW, $2.u.ast, $3.u.ast); }
;
expr_without_variable:
T_LIST '(' assignment_list ')' '=' expr
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_ASSIGN, $3.u.ast, $6.u.ast); }
| variable '=' expr
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_ASSIGN, $1.u.ast, $3.u.ast); }
| variable '=' '&' variable
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_ASSIGN_REF, $1.u.ast, $4.u.ast); }
| variable '=' '&' T_NEW class_name_reference ctor_arguments
{ zend_error(E_DEPRECATED, "Assigning the return value of new by reference is deprecated");
$$.u.ast = zend_ast_create_binary(ZEND_AST_ASSIGN_REF, $1.u.ast,
zend_ast_create_binary(ZEND_NEW, $5.u.ast, $6.u.ast)); }
| T_CLONE expr { $$.u.ast = zend_ast_create_unary(ZEND_CLONE, $2.u.ast); }
| variable T_PLUS_EQUAL expr
{ $$.u.ast = zend_ast_create_assign_op(ZEND_ASSIGN_ADD, $1.u.ast, $3.u.ast); }
| variable T_MINUS_EQUAL expr
{ $$.u.ast = zend_ast_create_assign_op(ZEND_ASSIGN_SUB, $1.u.ast, $3.u.ast); }
| variable T_MUL_EQUAL expr
{ $$.u.ast = zend_ast_create_assign_op(ZEND_ASSIGN_MUL, $1.u.ast, $3.u.ast); }
| variable T_POW_EQUAL expr
{ $$.u.ast = zend_ast_create_assign_op(ZEND_ASSIGN_POW, $1.u.ast, $3.u.ast); }
| variable T_DIV_EQUAL expr
{ $$.u.ast = zend_ast_create_assign_op(ZEND_ASSIGN_DIV, $1.u.ast, $3.u.ast); }
| variable T_CONCAT_EQUAL expr
{ $$.u.ast = zend_ast_create_assign_op(ZEND_ASSIGN_CONCAT, $1.u.ast, $3.u.ast); }
| variable T_MOD_EQUAL expr
{ $$.u.ast = zend_ast_create_assign_op(ZEND_ASSIGN_MOD, $1.u.ast, $3.u.ast); }
| variable T_AND_EQUAL expr
{ $$.u.ast = zend_ast_create_assign_op(ZEND_ASSIGN_BW_AND, $1.u.ast, $3.u.ast); }
| variable T_OR_EQUAL expr
{ $$.u.ast = zend_ast_create_assign_op(ZEND_ASSIGN_BW_OR, $1.u.ast, $3.u.ast); }
| variable T_XOR_EQUAL expr
{ $$.u.ast = zend_ast_create_assign_op(ZEND_ASSIGN_BW_XOR, $1.u.ast, $3.u.ast); }
| variable T_SL_EQUAL expr
{ $$.u.ast = zend_ast_create_assign_op(ZEND_ASSIGN_SL, $1.u.ast, $3.u.ast); }
| variable T_SR_EQUAL expr
{ $$.u.ast = zend_ast_create_assign_op(ZEND_ASSIGN_SR, $1.u.ast, $3.u.ast); }
| variable T_INC { $$.u.ast = zend_ast_create_unary(ZEND_POST_INC, $1.u.ast); }
| T_INC variable { $$.u.ast = zend_ast_create_unary(ZEND_PRE_INC, $2.u.ast); }
| variable T_DEC { $$.u.ast = zend_ast_create_unary(ZEND_POST_DEC, $1.u.ast); }
| T_DEC variable { $$.u.ast = zend_ast_create_unary(ZEND_PRE_DEC, $2.u.ast); }
| expr T_BOOLEAN_OR expr
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_OR, $1.u.ast, $3.u.ast); }
| expr T_BOOLEAN_AND expr
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_AND, $1.u.ast, $3.u.ast); }
| expr T_LOGICAL_OR expr
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_OR, $1.u.ast, $3.u.ast); }
| expr T_LOGICAL_AND expr
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_AND, $1.u.ast, $3.u.ast); }
| expr T_LOGICAL_XOR expr
{ $$.u.ast = zend_ast_create_binary_op(ZEND_BOOL_XOR, $1.u.ast, $3.u.ast); }
| expr '|' expr { $$.u.ast = zend_ast_create_binary_op(ZEND_BW_OR, $1.u.ast, $3.u.ast); }
| expr '&' expr { $$.u.ast = zend_ast_create_binary_op(ZEND_BW_AND, $1.u.ast, $3.u.ast); }
| expr '^' expr { $$.u.ast = zend_ast_create_binary_op(ZEND_BW_XOR, $1.u.ast, $3.u.ast); }
| expr '.' expr { $$.u.ast = zend_ast_create_binary_op(ZEND_CONCAT, $1.u.ast, $3.u.ast); }
| expr '+' expr { $$.u.ast = zend_ast_create_binary_op(ZEND_ADD, $1.u.ast, $3.u.ast); }
| expr '-' expr { $$.u.ast = zend_ast_create_binary_op(ZEND_SUB, $1.u.ast, $3.u.ast); }
| expr '*' expr { $$.u.ast = zend_ast_create_binary_op(ZEND_MUL, $1.u.ast, $3.u.ast); }
| expr T_POW expr { $$.u.ast = zend_ast_create_binary_op(ZEND_POW, $1.u.ast, $3.u.ast); }
| expr '/' expr { $$.u.ast = zend_ast_create_binary_op(ZEND_DIV, $1.u.ast, $3.u.ast); }
| expr '%' expr { $$.u.ast = zend_ast_create_binary_op(ZEND_MOD, $1.u.ast, $3.u.ast); }
| expr T_SL expr { $$.u.ast = zend_ast_create_binary_op(ZEND_SL, $1.u.ast, $3.u.ast); }
| expr T_SR expr { $$.u.ast = zend_ast_create_binary_op(ZEND_SR, $1.u.ast, $3.u.ast); }
| '+' expr %prec T_INC { $$.u.ast = zend_ast_create_unary(ZEND_AST_UNARY_PLUS, $2.u.ast); }
| '-' expr %prec T_INC { $$.u.ast = zend_ast_create_unary(ZEND_AST_UNARY_MINUS, $2.u.ast); }
| '!' expr { $$.u.ast = zend_ast_create_unary(ZEND_BOOL_NOT, $2.u.ast); }
| '~' expr { $$.u.ast = zend_ast_create_unary(ZEND_BW_NOT, $2.u.ast); }
| expr T_IS_IDENTICAL expr
{ $$.u.ast = zend_ast_create_binary_op(ZEND_IS_IDENTICAL, $1.u.ast, $3.u.ast); }
| expr T_IS_NOT_IDENTICAL expr
{ $$.u.ast = zend_ast_create_binary_op(ZEND_IS_NOT_IDENTICAL, $1.u.ast, $3.u.ast); }
| expr T_IS_EQUAL expr
{ $$.u.ast = zend_ast_create_binary_op(ZEND_IS_EQUAL, $1.u.ast, $3.u.ast); }
| expr T_IS_NOT_EQUAL expr
{ $$.u.ast = zend_ast_create_binary_op(ZEND_IS_NOT_EQUAL, $1.u.ast, $3.u.ast); }
| expr '<' expr
{ $$.u.ast = zend_ast_create_binary_op(ZEND_IS_SMALLER, $1.u.ast, $3.u.ast); }
| expr T_IS_SMALLER_OR_EQUAL expr
{ $$.u.ast = zend_ast_create_binary_op(ZEND_IS_SMALLER_OR_EQUAL, $1.u.ast, $3.u.ast); }
| expr '>' expr
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_GREATER, $1.u.ast, $3.u.ast); }
| expr T_IS_GREATER_OR_EQUAL expr
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_GREATER_EQUAL, $1.u.ast, $3.u.ast); }
| expr T_INSTANCEOF class_name_reference
{ $$.u.ast = zend_ast_create_binary(ZEND_INSTANCEOF, $1.u.ast, $3.u.ast); }
| parenthesis_expr { $$.u.ast = $1.u.ast; }
| new_expr { $$.u.ast = $1.u.ast; }
| expr '?' expr ':' expr
{ $$.u.ast = zend_ast_create_ternary(
ZEND_AST_CONDITIONAL, $1.u.ast, $3.u.ast, $5.u.ast); }
| expr '?' ':' expr
{ $$.u.ast = zend_ast_create_ternary(ZEND_AST_CONDITIONAL, $1.u.ast, NULL, $4.u.ast); }
| internal_functions_in_yacc { $$.u.ast = $1.u.ast; }
| T_INT_CAST expr
{ $$.u.ast = zend_ast_create_cast(IS_LONG, $2.u.ast); }
| T_DOUBLE_CAST expr
{ $$.u.ast = zend_ast_create_cast(IS_DOUBLE, $2.u.ast); }
| T_STRING_CAST expr
{ $$.u.ast = zend_ast_create_cast(IS_STRING, $2.u.ast); }
| T_ARRAY_CAST expr
{ $$.u.ast = zend_ast_create_cast(IS_ARRAY, $2.u.ast); }
| T_OBJECT_CAST expr
{ $$.u.ast = zend_ast_create_cast(IS_OBJECT, $2.u.ast); }
| T_BOOL_CAST expr
{ $$.u.ast = zend_ast_create_cast(_IS_BOOL, $2.u.ast); }
| T_UNSET_CAST expr
{ $$.u.ast = zend_ast_create_cast(IS_NULL, $2.u.ast); }
| T_EXIT exit_expr { $$.u.ast = zend_ast_create_unary(ZEND_EXIT, $2.u.ast); }
| '@' expr { $$.u.ast = zend_ast_create_unary(ZEND_AST_SILENCE, $2.u.ast); }
| scalar { $$.u.ast = $1.u.ast; }
| '`' backticks_expr '`' { $$.u.ast = zend_ast_create_unary(ZEND_AST_SHELL_EXEC, $2.u.ast); }
| T_PRINT expr { $$.u.ast = zend_ast_create_unary(ZEND_PRINT, $2.u.ast); }
| T_YIELD { $$.u.ast = zend_ast_create_binary(ZEND_YIELD, NULL, NULL); }
| T_YIELD expr { $$.u.ast = zend_ast_create_binary(ZEND_YIELD, $2.u.ast, NULL); }
| T_YIELD expr T_DOUBLE_ARROW expr
{ $$.u.ast = zend_ast_create_binary(ZEND_YIELD, $4.u.ast, $2.u.ast); }
| function returns_ref '(' parameter_list ')' lexical_vars '{' inner_statement_list '}'
{ $$.u.ast = zend_ast_create_decl(ZEND_AST_CLOSURE, $2.EA,
$1.EA, CG(zend_lineno), LANG_SCNG(yy_text), $1.u.op.ptr,
STR_INIT("{closure}", sizeof("{closure}") - 1, 0),
$4.u.ast, $6.u.ast, $8.u.ast); }
| T_STATIC function returns_ref '(' parameter_list ')' lexical_vars
'{' inner_statement_list '}'
{ $$.u.ast = zend_ast_create_decl(ZEND_AST_CLOSURE,
$3.EA | ZEND_ACC_STATIC, $2.EA, CG(zend_lineno), LANG_SCNG(yy_text),
$2.u.op.ptr, STR_INIT("{closure}", sizeof("{closure}") - 1, 0),
$5.u.ast, $7.u.ast, $9.u.ast); }
;
function:
T_FUNCTION
{ $$.EA = CG(zend_lineno); $$.u.op.ptr = CG(doc_comment); CG(doc_comment) = NULL; }
;
returns_ref:
/* empty */ { $$.EA = 0; }
| '&' { $$.EA = ZEND_ACC_RETURN_REFERENCE; }
;
lexical_vars:
/* empty */ { $$.u.ast = NULL; }
| T_USE '(' lexical_var_list ')' { $$.u.ast = $3.u.ast; }
;
lexical_var_list:
lexical_var_list ',' lexical_var { $$.u.ast = zend_ast_dynamic_add($1.u.ast, $3.u.ast); }
| lexical_var { $$.u.ast = zend_ast_create_dynamic_and_add(ZEND_AST_CLOSURE_USES, $1.u.ast); }
;
lexical_var:
T_VARIABLE { $$.u.ast = $1.u.ast; }
| '&' T_VARIABLE { $$.u.ast = $2.u.ast; $$.u.ast->attr = 1; }
;
function_call:
name argument_list
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_CALL, $1.u.ast, $2.u.ast); }
| class_name T_PAAMAYIM_NEKUDOTAYIM member_name argument_list
{ $$.u.ast = zend_ast_create_ternary(ZEND_AST_STATIC_CALL,
$1.u.ast, $3.u.ast, $4.u.ast); }
| variable_class_name T_PAAMAYIM_NEKUDOTAYIM member_name argument_list
{ $$.u.ast = zend_ast_create_ternary(ZEND_AST_STATIC_CALL,
$1.u.ast, $3.u.ast, $4.u.ast); }
| callable_expr argument_list
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_CALL, $1.u.ast, $2.u.ast); }
;
class_name:
T_STATIC
{ zval zv; ZVAL_STRINGL(&zv, "static", sizeof("static")-1);
$$.u.ast = zend_ast_create_zval_ex(&zv, ZEND_NAME_NOT_FQ); }
| name { $$.u.ast = $1.u.ast; }
;
class_name_reference:
class_name { $$.u.ast = $1.u.ast; }
| new_variable { $$.u.ast = $1.u.ast; }
;
exit_expr:
/* empty */ { $$.u.ast = NULL; }
| '(' ')' { $$.u.ast = NULL; }
| parenthesis_expr { $$.u.ast = $1.u.ast; }
;
backticks_expr:
/* empty */
{ $$.u.ast = zend_ast_create_zval_from_str(STR_EMPTY_ALLOC()); }
| T_ENCAPSED_AND_WHITESPACE { $$.u.ast = $1.u.ast; }
| encaps_list { $$.u.ast = $1.u.ast; }
;
ctor_arguments:
/* empty */ { $$.u.ast = zend_ast_create_dynamic(ZEND_AST_ARG_LIST); }
| argument_list { $$.u.ast = $1.u.ast; }
;
dereferencable_scalar:
T_ARRAY '(' array_pair_list ')' { $$.u.ast = $3.u.ast; }
| '[' array_pair_list ']' { $$.u.ast = $2.u.ast; }
| T_CONSTANT_ENCAPSED_STRING { $$.u.ast = $1.u.ast; }
;
scalar:
T_LNUMBER { $$.u.ast = $1.u.ast; }
| T_DNUMBER { $$.u.ast = $1.u.ast; }
| T_LINE { $$.u.ast = $1.u.ast; }
| T_FILE { $$.u.ast = $1.u.ast; }
| T_DIR { $$.u.ast = $1.u.ast; }
| T_TRAIT_C { $$.u.ast = zend_ast_create_ex(0, ZEND_AST_MAGIC_CONST, T_TRAIT_C); }
| T_METHOD_C { $$.u.ast = zend_ast_create_ex(0, ZEND_AST_MAGIC_CONST, T_METHOD_C); }
| T_FUNC_C { $$.u.ast = zend_ast_create_ex(0, ZEND_AST_MAGIC_CONST, T_FUNC_C); }
| T_NS_C { $$.u.ast = zend_ast_create_ex(0, ZEND_AST_MAGIC_CONST, T_NS_C); }
| T_CLASS_C { $$.u.ast = zend_ast_create_ex(0, ZEND_AST_MAGIC_CONST, T_CLASS_C); }
| T_START_HEREDOC T_ENCAPSED_AND_WHITESPACE T_END_HEREDOC { $$.u.ast = $2.u.ast; }
| T_START_HEREDOC T_END_HEREDOC
{ $$.u.ast = zend_ast_create_zval_from_str(STR_EMPTY_ALLOC()); }
| '"' encaps_list '"' { $$.u.ast = $2.u.ast; }
| T_START_HEREDOC encaps_list T_END_HEREDOC { $$.u.ast = $2.u.ast; }
| dereferencable_scalar { $$.u.ast = $1.u.ast; }
| class_name_scalar { $$.u.ast = $1.u.ast; }
| class_constant { $$.u.ast = $1.u.ast; }
| name { $$.u.ast = zend_ast_create_unary(ZEND_AST_CONST, $1.u.ast); }
;
possible_comma:
/* empty */
| ','
;
expr:
variable { $$.u.ast = $1.u.ast; }
| expr_without_variable { $$.u.ast = $1.u.ast; }
;
parenthesis_expr:
'(' expr ')' { $$.u.ast = $2.u.ast; }
;
variable_class_name:
dereferencable { $$.u.ast = $1.u.ast; }
;
dereferencable:
variable { $$.u.ast = $1.u.ast; }
| '(' expr ')' { $$.u.ast = $2.u.ast; }
| dereferencable_scalar { $$.u.ast = $1.u.ast; }
;
callable_expr:
callable_variable { $$.u.ast = $1.u.ast; }
| '(' expr ')' { $$.u.ast = $2.u.ast; }
| dereferencable_scalar { $$.u.ast = $1.u.ast; }
;
callable_variable:
simple_variable
{ $$.u.ast = zend_ast_create_unary(ZEND_AST_VAR, $1.u.ast); }
| dereferencable '[' dim_offset ']'
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_DIM, $1.u.ast, $3.u.ast); }
| dereferencable '{' expr '}'
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_DIM, $1.u.ast, $3.u.ast); }
| dereferencable T_OBJECT_OPERATOR member_name argument_list
{ $$.u.ast = zend_ast_create_ternary(ZEND_AST_METHOD_CALL, $1.u.ast, $3.u.ast, $4.u.ast); }
| function_call { $$.u.ast = $1.u.ast; }
;
variable:
callable_variable
{ $$.u.ast = $1.u.ast; }
| static_member
{ $$.u.ast = $1.u.ast; }
| dereferencable T_OBJECT_OPERATOR member_name
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_PROP, $1.u.ast, $3.u.ast); }
;
simple_variable:
T_VARIABLE
{ $$.u.ast = $1.u.ast; }
| '$' '{' expr '}'
{ $$.u.ast = $3.u.ast; }
| '$' simple_variable
{ $$.u.ast = zend_ast_create_unary(ZEND_AST_VAR, $2.u.ast); }
;
static_member:
class_name T_PAAMAYIM_NEKUDOTAYIM simple_variable
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_STATIC_PROP, $1.u.ast, $3.u.ast); }
| variable_class_name T_PAAMAYIM_NEKUDOTAYIM simple_variable
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_STATIC_PROP, $1.u.ast, $3.u.ast); }
;
new_variable:
simple_variable
{ $$.u.ast = zend_ast_create_unary(ZEND_AST_VAR, $1.u.ast); }
| new_variable '[' dim_offset ']'
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_DIM, $1.u.ast, $3.u.ast); }
| new_variable '{' expr '}'
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_DIM, $1.u.ast, $3.u.ast); }
| new_variable T_OBJECT_OPERATOR member_name
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_PROP, $1.u.ast, $3.u.ast); }
| class_name T_PAAMAYIM_NEKUDOTAYIM simple_variable
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_STATIC_PROP, $1.u.ast, $3.u.ast); }
| new_variable T_PAAMAYIM_NEKUDOTAYIM simple_variable
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_STATIC_PROP, $1.u.ast, $3.u.ast); }
;
dim_offset:
/* empty */ { $$.u.ast = NULL; }
| expr { $$.u.ast = $1.u.ast; }
;
member_name:
T_STRING { $$.u.ast = $1.u.ast; }
| '{' expr '}' { $$.u.ast = $2.u.ast; }
| simple_variable { $$.u.ast = zend_ast_create_unary(ZEND_AST_VAR, $1.u.ast); }
;
assignment_list:
assignment_list ',' assignment_list_element
{ $$.u.ast = zend_ast_dynamic_add($1.u.ast, $3.u.ast); }
| assignment_list_element
{ $$.u.ast = zend_ast_create_dynamic_and_add(ZEND_AST_LIST, $1.u.ast); }
;
assignment_list_element:
variable { $$.u.ast = $1.u.ast; }
| T_LIST '(' assignment_list ')' { $$.u.ast = $3.u.ast; }
| /* empty */ { $$.u.ast = NULL; }
;
array_pair_list:
/* empty */ { $$.u.ast = zend_ast_create_dynamic(ZEND_AST_ARRAY); }
| non_empty_array_pair_list possible_comma { $$.u.ast = $1.u.ast; }
;
non_empty_array_pair_list:
non_empty_array_pair_list ',' array_pair
{ $$.u.ast = zend_ast_dynamic_add($1.u.ast, $3.u.ast); }
| array_pair
{ $$.u.ast = zend_ast_create_dynamic_and_add(ZEND_AST_ARRAY, $1.u.ast); }
;
array_pair:
expr T_DOUBLE_ARROW expr
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_ARRAY_ELEM, $3.u.ast, $1.u.ast); }
| expr { $$.u.ast = zend_ast_create_binary(ZEND_AST_ARRAY_ELEM, $1.u.ast, NULL); }
| expr T_DOUBLE_ARROW '&' variable
{ $$.u.ast = zend_ast_create_ex(2, ZEND_AST_ARRAY_ELEM, 1, $4.u.ast, $1.u.ast); }
| '&' variable
{ $$.u.ast = zend_ast_create_ex(2, ZEND_AST_ARRAY_ELEM, 1, $2.u.ast, NULL); }
;
encaps_list:
encaps_list encaps_var
{ $$.u.ast = zend_ast_dynamic_add($1.u.ast, $2.u.ast); }
| encaps_list T_ENCAPSED_AND_WHITESPACE
{ $$.u.ast = zend_ast_dynamic_add($1.u.ast, $2.u.ast); }
| encaps_var
{ $$.u.ast = zend_ast_create_dynamic_and_add(ZEND_AST_ENCAPS_LIST, $1.u.ast); }
| T_ENCAPSED_AND_WHITESPACE encaps_var
{ $$.u.ast = zend_ast_dynamic_add(zend_ast_create_dynamic_and_add(
ZEND_AST_ENCAPS_LIST, $1.u.ast), $2.u.ast); }
;
encaps_var:
T_VARIABLE
{ $$.u.ast = zend_ast_create_unary(ZEND_AST_VAR, $1.u.ast); }
| T_VARIABLE '[' encaps_var_offset ']'
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_DIM,
zend_ast_create_unary(ZEND_AST_VAR, $1.u.ast), $3.u.ast); }
| T_VARIABLE T_OBJECT_OPERATOR T_STRING
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_PROP,
zend_ast_create_unary(ZEND_AST_VAR, $1.u.ast), $3.u.ast); }
| T_DOLLAR_OPEN_CURLY_BRACES expr '}'
{ $$.u.ast = zend_ast_create_unary(ZEND_AST_VAR, $2.u.ast); }
| T_DOLLAR_OPEN_CURLY_BRACES T_STRING_VARNAME '}'
{ $$.u.ast = zend_ast_create_unary(ZEND_AST_VAR, $2.u.ast); }
| T_DOLLAR_OPEN_CURLY_BRACES T_STRING_VARNAME '[' expr ']' '}'
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_DIM,
zend_ast_create_unary(ZEND_AST_VAR, $2.u.ast), $4.u.ast); }
| T_CURLY_OPEN variable '}' { $$.u.ast = $2.u.ast; }
;
encaps_var_offset:
T_STRING { $$.u.ast = $1.u.ast; }
| T_NUM_STRING { $$.u.ast = $1.u.ast; }
| T_VARIABLE { $$.u.ast = zend_ast_create_unary(ZEND_AST_VAR, $1.u.ast); }
;
internal_functions_in_yacc:
T_ISSET '(' isset_variables ')' { $$.u.ast = $3.u.ast; }
| T_EMPTY '(' expr ')' { $$.u.ast = zend_ast_create_unary(ZEND_AST_EMPTY, $3.u.ast); }
| T_INCLUDE expr
{ $$.u.ast = zend_ast_create_ex(1, ZEND_INCLUDE_OR_EVAL, ZEND_INCLUDE, $2.u.ast); }
| T_INCLUDE_ONCE expr
{ $$.u.ast = zend_ast_create_ex(1, ZEND_INCLUDE_OR_EVAL, ZEND_INCLUDE_ONCE, $2.u.ast); }
| T_EVAL '(' expr ')'
{ $$.u.ast = zend_ast_create_ex(1, ZEND_INCLUDE_OR_EVAL, ZEND_EVAL, $3.u.ast); }
| T_REQUIRE expr
{ $$.u.ast = zend_ast_create_ex(1, ZEND_INCLUDE_OR_EVAL, ZEND_REQUIRE, $2.u.ast); }
| T_REQUIRE_ONCE expr
{ $$.u.ast = zend_ast_create_ex(1, ZEND_INCLUDE_OR_EVAL, ZEND_REQUIRE_ONCE, $2.u.ast); }
;
isset_variables:
isset_variable { $$.u.ast = $1.u.ast; }
| isset_variables ',' isset_variable
{ $$.u.ast = zend_ast_create_binary(ZEND_AST_AND, $1.u.ast, $3.u.ast); }
;
isset_variable:
expr { $$.u.ast = zend_ast_create_unary(ZEND_AST_ISSET, $1.u.ast); }
;
class_constant:
class_name T_PAAMAYIM_NEKUDOTAYIM T_STRING
{ $$.u.ast = zend_ast_create_binary(
ZEND_AST_CLASS_CONST, $1.u.ast, $3.u.ast); }
| variable_class_name T_PAAMAYIM_NEKUDOTAYIM T_STRING
{ $$.u.ast = zend_ast_create_binary(
ZEND_AST_CLASS_CONST, $1.u.ast, $3.u.ast); }
;
class_name_scalar:
class_name T_PAAMAYIM_NEKUDOTAYIM T_CLASS
{ $$.u.ast = zend_ast_create_unary(ZEND_AST_RESOLVE_CLASS_NAME, $1.u.ast); }
;
%%
/* Copy to YYRES the contents of YYSTR after stripping away unnecessary
quotes and backslashes, so that it's suitable for yyerror. The
heuristic is that double-quoting is unnecessary unless the string
contains an apostrophe, a comma, or backslash (other than
backslash-backslash). YYSTR is taken from yytname. If YYRES is
null, do not copy; instead, return the length of what the result
would have been. */
static YYSIZE_T zend_yytnamerr(char *yyres, const char *yystr)
{
if (!yyres) {
return yystrlen(yystr);
}
{
TSRMLS_FETCH();
if (CG(parse_error) == 0) {
char buffer[120];
const unsigned char *end, *str, *tok1 = NULL, *tok2 = NULL;
unsigned int len = 0, toklen = 0, yystr_len;
CG(parse_error) = 1;
if (LANG_SCNG(yy_text)[0] == 0 &&
LANG_SCNG(yy_leng) == 1 &&
memcmp(yystr, "\"end of file\"", sizeof("\"end of file\"") - 1) == 0) {
yystpcpy(yyres, "end of file");
return sizeof("end of file")-1;
}
str = LANG_SCNG(yy_text);
end = memchr(str, '\n', LANG_SCNG(yy_leng));
yystr_len = yystrlen(yystr);
if ((tok1 = memchr(yystr, '(', yystr_len)) != NULL
&& (tok2 = zend_memrchr(yystr, ')', yystr_len)) != NULL) {
toklen = (tok2 - tok1) + 1;
} else {
tok1 = tok2 = NULL;
toklen = 0;
}
if (end == NULL) {
len = LANG_SCNG(yy_leng) > 30 ? 30 : LANG_SCNG(yy_leng);
} else {
len = (end - str) > 30 ? 30 : (end - str);
}
if (toklen) {
snprintf(buffer, sizeof(buffer), "'%.*s' %.*s", len, str, toklen, tok1);
} else {
snprintf(buffer, sizeof(buffer), "'%.*s'", len, str);
}
yystpcpy(yyres, buffer);
return len + (toklen ? toklen + 1 : 0) + 2;
}
}
if (*yystr == '"') {
YYSIZE_T yyn = 0;
const char *yyp = yystr;
for (; *++yyp != '"'; ++yyn) {
yyres[yyn] = *yyp;
}
yyres[yyn] = '\0';
return yyn;
}
yystpcpy(yyres, yystr);
return strlen(yystr);
}
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* indent-tabs-mode: t
* End:
*/
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