php-src/Zend/zend_language_parser.y

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%{
/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
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| Copyright (c) 1998-2015 Zend Technologies Ltd. (http://www.zend.com) |
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+----------------------------------------------------------------------+
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| 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: |
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| http://www.zend.com/license/2_00.txt. |
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| 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. |
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+----------------------------------------------------------------------+
| Authors: Andi Gutmans <andi@zend.com> |
| Zeev Suraski <zeev@zend.com> |
| Nikita Popov <nikic@php.net> |
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+----------------------------------------------------------------------+
*/
/* $Id$ */
/*
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* LALR shift/reduce conflicts and how they are resolved:
*
* - 2 shift/reduce conflicts due to the dangling elseif/else ambiguity. Solved by shift.
*
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*/
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#include "zend_compile.h"
#include "zend.h"
#include "zend_list.h"
#include "zend_globals.h"
#include "zend_API.h"
#include "zend_constants.h"
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#define YYSIZE_T size_t
#define yytnamerr zend_yytnamerr
static YYSIZE_T zend_yytnamerr(char*, const char*);
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#define YYERROR_VERBOSE
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#define YYSTYPE zend_parser_stack_elem
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#ifdef _MSC_VER
#define YYMALLOC malloc
#define YYFREE free
#endif
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%}
%pure_parser
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%expect 2
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%code requires {
}
%destructor { zend_ast_destroy($$); } <ast>
%destructor { if ($$) zend_string_release($$); } <str>
%left T_INCLUDE T_INCLUDE_ONCE T_EVAL T_REQUIRE T_REQUIRE_ONCE
%left ','
%left T_LOGICAL_OR
%left T_LOGICAL_XOR
%left T_LOGICAL_AND
%right T_PRINT
%right T_YIELD
%right T_DOUBLE_ARROW
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%right T_YIELD_FROM
%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
%left '?' ':'
%right T_COALESCE
%left T_BOOLEAN_OR
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%left T_BOOLEAN_AND
%left '|'
%left '^'
%left '&'
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%nonassoc T_IS_EQUAL T_IS_NOT_EQUAL T_IS_IDENTICAL T_IS_NOT_IDENTICAL T_SPACESHIP
%nonassoc '<' T_IS_SMALLER_OR_EQUAL '>' T_IS_GREATER_OR_EQUAL
%left T_SL T_SR
%left '+' '-' '.'
%left '*' '/' '%'
%right '!'
%nonassoc 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
%right '['
%nonassoc T_NEW T_CLONE
%left T_ELSEIF
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%left T_ELSE
%left T_ENDIF
%right T_STATIC T_ABSTRACT T_FINAL T_PRIVATE T_PROTECTED T_PUBLIC
%token <ast> T_LNUMBER "integer number (T_LNUMBER)"
%token <ast> T_DNUMBER "floating-point number (T_DNUMBER)"
%token <ast> T_STRING "identifier (T_STRING)"
%token <ast> T_VARIABLE "variable (T_VARIABLE)"
%token <ast> T_INLINE_HTML
%token <ast> T_ENCAPSED_AND_WHITESPACE "quoted-string and whitespace (T_ENCAPSED_AND_WHITESPACE)"
%token <ast> T_CONSTANT_ENCAPSED_STRING "quoted-string (T_CONSTANT_ENCAPSED_STRING)"
%token <ast> T_STRING_VARNAME "variable name (T_STRING_VARNAME)"
%token <ast> T_NUM_STRING "number (T_NUM_STRING)"
%token END 0 "end of file"
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%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)"
%token T_LOGICAL_OR "or (T_LOGICAL_OR)"
%token T_LOGICAL_XOR "xor (T_LOGICAL_XOR)"
%token T_LOGICAL_AND "and (T_LOGICAL_AND)"
%token T_PRINT "print (T_PRINT)"
%token T_YIELD "yield (T_YIELD)"
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%token T_YIELD_FROM "yield from (T_YIELD_FROM)"
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%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)"
%token T_BOOLEAN_OR "|| (T_BOOLEAN_OR)"
%token T_BOOLEAN_AND "&& (T_BOOLEAN_AND)"
%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)"
%token T_IS_SMALLER_OR_EQUAL "<= (T_IS_SMALLER_OR_EQUAL)"
%token T_IS_GREATER_OR_EQUAL ">= (T_IS_GREATER_OR_EQUAL)"
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%token T_SPACESHIP "<=> (T_SPACESHIP)"
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%token T_SL "<< (T_SL)"
%token T_SR ">> (T_SR)"
%token T_INSTANCEOF "instanceof (T_INSTANCEOF)"
%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)"
%token T_NEW "new (T_NEW)"
%token T_CLONE "clone (T_CLONE)"
%token T_EXIT "exit (T_EXIT)"
%token T_IF "if (T_IF)"
%token T_ELSEIF "elseif (T_ELSEIF)"
%token T_ELSE "else (T_ELSE)"
%token T_ENDIF "endif (T_ENDIF)"
%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)"
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%token T_THROW "throw (T_THROW)"
%token T_USE "use (T_USE)"
%token T_INSTEADOF "insteadof (T_INSTEADOF)"
%token T_GLOBAL "global (T_GLOBAL)"
%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)"
%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_LINE "__LINE__ (T_LINE)"
%token T_FILE "__FILE__ (T_FILE)"
%token T_DIR "__DIR__ (T_DIR)"
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%token T_CLASS_C "__CLASS__ (T_CLASS_C)"
%token T_TRAIT_C "__TRAIT__ (T_TRAIT_C)"
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%token T_METHOD_C "__METHOD__ (T_METHOD_C)"
%token T_FUNC_C "__FUNCTION__ (T_FUNC_C)"
%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_NS_SEPARATOR "\\ (T_NS_SEPARATOR)"
%token T_ELLIPSIS "... (T_ELLIPSIS)"
%token T_COALESCE "?? (T_COALESCE)"
%token T_POW "** (T_POW)"
%token T_POW_EQUAL "**= (T_POW_EQUAL)"
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/* Token used to force a parse error from the lexer */
%token T_ERROR
%type <ast> top_statement namespace_name name statement function_declaration_statement
%type <ast> class_declaration_statement trait_declaration_statement
%type <ast> interface_declaration_statement interface_extends_list
%type <ast> group_use_declaration inline_use_declarations inline_use_declaration
%type <ast> mixed_group_use_declaration use_declaration const_decl inner_statement
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%type <ast> expr optional_expr while_statement for_statement foreach_variable
%type <ast> foreach_statement declare_statement finally_statement unset_variable variable
%type <ast> extends_from parameter optional_type argument expr_without_variable global_var
%type <ast> static_var class_statement trait_adaptation trait_precedence trait_alias
%type <ast> absolute_trait_method_reference trait_method_reference property echo_expr
%type <ast> new_expr anonymous_class class_name class_name_reference simple_variable internal_functions_in_yacc
%type <ast> exit_expr scalar backticks_expr lexical_var function_call member_name
%type <ast> variable_class_name dereferencable_scalar class_name_scalar constant dereferencable
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%type <ast> callable_expr callable_variable static_member new_variable
%type <ast> assignment_list_element array_pair encaps_var encaps_var_offset isset_variables
%type <ast> top_statement_list use_declarations const_list inner_statement_list if_stmt
%type <ast> alt_if_stmt for_exprs switch_case_list global_var_list static_var_list
%type <ast> echo_expr_list unset_variables catch_list parameter_list class_statement_list
%type <ast> implements_list case_list if_stmt_without_else
%type <ast> non_empty_parameter_list argument_list non_empty_argument_list property_list
%type <ast> class_const_list name_list trait_adaptations method_body non_empty_for_exprs
%type <ast> ctor_arguments alt_if_stmt_without_else trait_adaptation_list lexical_vars
%type <ast> lexical_var_list encaps_list array_pair_list non_empty_array_pair_list
%type <ast> assignment_list isset_variable type return_type
%type <num> returns_ref function is_reference is_variadic variable_modifiers
%type <num> method_modifiers trait_modifiers non_empty_member_modifiers member_modifier
%type <num> class_modifiers class_modifier use_type
%type <str> backup_doc_comment
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%% /* Rules */
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start:
top_statement_list { CG(ast) = $1; }
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;
top_statement_list:
top_statement_list top_statement { $$ = zend_ast_list_add($1, $2); }
| /* empty */ { $$ = zend_ast_create_list(0, ZEND_AST_STMT_LIST); }
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;
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namespace_name:
T_STRING { $$ = $1; }
| namespace_name T_NS_SEPARATOR T_STRING { $$ = zend_ast_append_str($1, $3); }
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;
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name:
namespace_name { $$ = $1; $$->attr = ZEND_NAME_NOT_FQ; }
| T_NAMESPACE T_NS_SEPARATOR namespace_name { $$ = $3; $$->attr = ZEND_NAME_RELATIVE; }
| T_NS_SEPARATOR namespace_name { $$ = $2; $$->attr = ZEND_NAME_FQ; }
;
top_statement:
statement { $$ = $1; }
| function_declaration_statement { $$ = $1; }
| class_declaration_statement { $$ = $1; }
| trait_declaration_statement { $$ = $1; }
| interface_declaration_statement { $$ = $1; }
| T_HALT_COMPILER '(' ')' ';'
{ $$ = zend_ast_create(ZEND_AST_HALT_COMPILER,
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zend_ast_create_zval_from_long(zend_get_scanned_file_offset()));
zend_stop_lexing(); }
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| T_NAMESPACE namespace_name ';'
{ $$ = zend_ast_create(ZEND_AST_NAMESPACE, $2, NULL);
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RESET_DOC_COMMENT(); }
| T_NAMESPACE namespace_name { RESET_DOC_COMMENT(); }
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'{' top_statement_list '}'
{ $$ = zend_ast_create(ZEND_AST_NAMESPACE, $2, $5); }
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| T_NAMESPACE { RESET_DOC_COMMENT(); }
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'{' top_statement_list '}'
{ $$ = zend_ast_create(ZEND_AST_NAMESPACE, NULL, $4); }
| T_USE mixed_group_use_declaration ';' { $$ = $2; }
| T_USE use_type group_use_declaration ';' { $$ = $3; $$->attr = $2; }
| T_USE use_declarations ';' { $$ = $2; $$->attr = T_CLASS; }
| T_USE use_type use_declarations ';' { $$ = $3; $$->attr = $2; }
| T_CONST const_list ';' { $$ = $2; }
;
use_type:
T_FUNCTION { $$ = T_FUNCTION; }
| T_CONST { $$ = T_CONST; }
;
group_use_declaration:
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namespace_name T_NS_SEPARATOR '{' use_declarations '}'
{$$ = zend_ast_create(ZEND_AST_GROUP_USE, $1, $4); }
;
mixed_group_use_declaration:
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namespace_name T_NS_SEPARATOR '{' inline_use_declarations '}'
{$$ = zend_ast_create(ZEND_AST_GROUP_USE, $1, $4);}
;
inline_use_declarations:
inline_use_declarations ',' inline_use_declaration
{ $$ = zend_ast_list_add($1, $3); }
| inline_use_declaration
{ $$ = zend_ast_create_list(1, ZEND_AST_USE, $1); }
;
inline_use_declaration:
use_declaration { $$ = $1; $$->attr = T_CLASS; }
| use_type use_declaration { $$ = $2; $$->attr = $1; }
;
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use_declarations:
use_declarations ',' use_declaration
{ $$ = zend_ast_list_add($1, $3); }
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| use_declaration
{ $$ = zend_ast_create_list(1, ZEND_AST_USE, $1); }
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;
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use_declaration:
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namespace_name
{ $$ = zend_ast_create(ZEND_AST_USE_ELEM, $1, NULL); }
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| namespace_name T_AS T_STRING
{ $$ = zend_ast_create(ZEND_AST_USE_ELEM, $1, $3); }
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| T_NS_SEPARATOR namespace_name
{ $$ = zend_ast_create(ZEND_AST_USE_ELEM, $2, NULL); }
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| T_NS_SEPARATOR namespace_name T_AS T_STRING
{ $$ = zend_ast_create(ZEND_AST_USE_ELEM, $2, $4); }
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;
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const_list:
const_list ',' const_decl { $$ = zend_ast_list_add($1, $3); }
| const_decl { $$ = zend_ast_create_list(1, ZEND_AST_CONST_DECL, $1); }
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;
inner_statement_list:
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inner_statement_list inner_statement
{ $$ = zend_ast_list_add($1, $2); }
| /* empty */
{ $$ = zend_ast_create_list(0, ZEND_AST_STMT_LIST); }
;
inner_statement:
statement { $$ = $1; }
| function_declaration_statement { $$ = $1; }
| class_declaration_statement { $$ = $1; }
| trait_declaration_statement { $$ = $1; }
| interface_declaration_statement { $$ = $1; }
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| T_HALT_COMPILER '(' ')' ';'
{ $$ = NULL; zend_error_noreturn(E_COMPILE_ERROR,
"__HALT_COMPILER() can only be used from the outermost scope"); }
;
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statement:
'{' inner_statement_list '}' { $$ = $2; }
| if_stmt { $$ = $1; }
| alt_if_stmt { $$ = $1; }
| T_WHILE '(' expr ')' while_statement
{ $$ = zend_ast_create(ZEND_AST_WHILE, $3, $5); }
| T_DO statement T_WHILE '(' expr ')' ';'
{ $$ = zend_ast_create(ZEND_AST_DO_WHILE, $2, $5); }
| T_FOR '(' for_exprs ';' for_exprs ';' for_exprs ')' for_statement
{ $$ = zend_ast_create(ZEND_AST_FOR, $3, $5, $7, $9); }
| T_SWITCH '(' expr ')' switch_case_list
{ $$ = zend_ast_create(ZEND_AST_SWITCH, $3, $5); }
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| T_BREAK optional_expr ';' { $$ = zend_ast_create(ZEND_AST_BREAK, $2); }
| T_CONTINUE optional_expr ';' { $$ = zend_ast_create(ZEND_AST_CONTINUE, $2); }
| T_RETURN optional_expr ';' { $$ = zend_ast_create(ZEND_AST_RETURN, $2); }
| T_GLOBAL global_var_list ';' { $$ = $2; }
| T_STATIC static_var_list ';' { $$ = $2; }
| T_ECHO echo_expr_list ';' { $$ = $2; }
| T_INLINE_HTML { $$ = zend_ast_create(ZEND_AST_ECHO, $1); }
| expr ';' { $$ = $1; }
| T_UNSET '(' unset_variables ')' ';' { $$ = $3; }
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| T_FOREACH '(' expr T_AS foreach_variable ')' foreach_statement
{ $$ = zend_ast_create(ZEND_AST_FOREACH, $3, $5, NULL, $7); }
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| T_FOREACH '(' expr T_AS foreach_variable T_DOUBLE_ARROW foreach_variable ')'
foreach_statement
{ $$ = zend_ast_create(ZEND_AST_FOREACH, $3, $7, $5, $9); }
| T_DECLARE '(' const_list ')'
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{ zend_handle_encoding_declaration($3); }
declare_statement
{ $$ = zend_ast_create(ZEND_AST_DECLARE, $3, $6); }
| ';' /* empty statement */ { $$ = NULL; }
| T_TRY '{' inner_statement_list '}' catch_list finally_statement
{ $$ = zend_ast_create(ZEND_AST_TRY, $3, $5, $6); }
| T_THROW expr ';' { $$ = zend_ast_create(ZEND_AST_THROW, $2); }
| T_GOTO T_STRING ';' { $$ = zend_ast_create(ZEND_AST_GOTO, $2); }
| T_STRING ':' { $$ = zend_ast_create(ZEND_AST_LABEL, $1); }
;
catch_list:
/* empty */
{ $$ = zend_ast_create_list(0, ZEND_AST_CATCH_LIST); }
| catch_list T_CATCH '(' name T_VARIABLE ')' '{' inner_statement_list '}'
{ $$ = zend_ast_list_add($1, zend_ast_create(ZEND_AST_CATCH, $4, $5, $8)); }
;
finally_statement:
/* empty */ { $$ = NULL; }
| T_FINALLY '{' inner_statement_list '}' { $$ = $3; }
;
unset_variables:
unset_variable { $$ = zend_ast_create_list(1, ZEND_AST_STMT_LIST, $1); }
| unset_variables ',' unset_variable { $$ = zend_ast_list_add($1, $3); }
;
unset_variable:
variable { $$ = zend_ast_create(ZEND_AST_UNSET, $1); }
;
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function_declaration_statement:
function returns_ref T_STRING '(' parameter_list ')' return_type
backup_doc_comment '{' inner_statement_list '}'
{ $$ = zend_ast_create_decl(ZEND_AST_FUNC_DECL, $2, $1, $8,
zend_ast_get_str($3), $5, NULL, $10, $7); }
2002-09-24 01:20:59 +08:00
;
is_reference:
/* empty */ { $$ = 0; }
| '&' { $$ = ZEND_PARAM_REF; }
;
is_variadic:
/* empty */ { $$ = 0; }
| T_ELLIPSIS { $$ = ZEND_PARAM_VARIADIC; }
;
2014-07-21 23:34:00 +08:00
class_declaration_statement:
class_modifiers T_CLASS { $<num>$ = CG(zend_lineno); }
T_STRING extends_from implements_list backup_doc_comment '{' class_statement_list '}'
{ $$ = zend_ast_create_decl(ZEND_AST_CLASS, $1, $<num>3, $7, zend_ast_get_str($4), $5, $6, $9, NULL); }
| T_CLASS { $<num>$ = CG(zend_lineno); }
T_STRING extends_from implements_list backup_doc_comment '{' class_statement_list '}'
{ $$ = zend_ast_create_decl(ZEND_AST_CLASS, 0, $<num>2, $6, zend_ast_get_str($3), $4, $5, $8, NULL); }
;
class_modifiers:
class_modifier { $$ = $1; }
| class_modifiers class_modifier { $$ = zend_add_class_modifier($1, $2); }
;
class_modifier:
T_ABSTRACT { $$ = ZEND_ACC_EXPLICIT_ABSTRACT_CLASS; }
| T_FINAL { $$ = ZEND_ACC_FINAL; }
2002-07-18 02:36:29 +08:00
;
trait_declaration_statement:
T_TRAIT { $<num>$ = CG(zend_lineno); }
T_STRING backup_doc_comment '{' class_statement_list '}'
{ $$ = zend_ast_create_decl(ZEND_AST_CLASS, ZEND_ACC_TRAIT, $<num>2, $4, zend_ast_get_str($3), NULL, NULL, $6, NULL); }
;
interface_declaration_statement:
T_INTERFACE { $<num>$ = CG(zend_lineno); }
T_STRING interface_extends_list backup_doc_comment '{' class_statement_list '}'
{ $$ = zend_ast_create_decl(ZEND_AST_CLASS, ZEND_ACC_INTERFACE, $<num>2, $5, zend_ast_get_str($3), NULL, $4, $7, NULL); }
;
2002-07-18 02:36:29 +08:00
extends_from:
/* empty */ { $$ = NULL; }
| T_EXTENDS name { $$ = $2; }
2003-03-05 19:14:44 +08:00
;
interface_extends_list:
/* empty */ { $$ = NULL; }
| T_EXTENDS name_list { $$ = $2; }
;
2003-03-05 19:14:44 +08:00
implements_list:
/* empty */ { $$ = NULL; }
| T_IMPLEMENTS name_list { $$ = $2; }
;
foreach_variable:
variable { $$ = $1; }
| '&' variable { $$ = zend_ast_create(ZEND_AST_REF, $2); }
| T_LIST '(' assignment_list ')' { $$ = $3; }
1999-04-08 02:10:10 +08:00
;
for_statement:
statement { $$ = $1; }
| ':' inner_statement_list T_ENDFOR ';' { $$ = $2; }
1999-04-08 02:10:10 +08:00
;
foreach_statement:
statement { $$ = $1; }
| ':' inner_statement_list T_ENDFOREACH ';' { $$ = $2; }
1999-04-08 02:10:10 +08:00
;
declare_statement:
statement { $$ = $1; }
| ':' inner_statement_list T_ENDDECLARE ';' { $$ = $2; }
;
1999-04-08 02:10:10 +08:00
switch_case_list:
'{' case_list '}' { $$ = $2; }
| '{' ';' case_list '}' { $$ = $3; }
| ':' case_list T_ENDSWITCH ';' { $$ = $2; }
| ':' ';' case_list T_ENDSWITCH ';' { $$ = $3; }
1999-04-08 02:10:10 +08:00
;
case_list:
/* empty */ { $$ = zend_ast_create_list(0, ZEND_AST_SWITCH_LIST); }
2014-07-11 21:31:47 +08:00
| case_list T_CASE expr case_separator inner_statement_list
{ $$ = zend_ast_list_add($1, zend_ast_create(ZEND_AST_SWITCH_CASE, $3, $5)); }
2014-07-11 21:31:47 +08:00
| case_list T_DEFAULT case_separator inner_statement_list
{ $$ = zend_ast_list_add($1, zend_ast_create(ZEND_AST_SWITCH_CASE, NULL, $4)); }
1999-04-08 02:10:10 +08:00
;
case_separator:
':'
| ';'
;
while_statement:
statement { $$ = $1; }
| ':' inner_statement_list T_ENDWHILE ';' { $$ = $2; }
1999-04-08 02:10:10 +08:00
;
2014-07-10 22:38:04 +08:00
if_stmt_without_else:
T_IF '(' expr ')' statement
{ $$ = zend_ast_create_list(1, ZEND_AST_IF,
zend_ast_create(ZEND_AST_IF_ELEM, $3, $5)); }
| if_stmt_without_else T_ELSEIF '(' expr ')' statement
{ $$ = zend_ast_list_add($1,
zend_ast_create(ZEND_AST_IF_ELEM, $4, $6)); }
2014-07-10 22:38:04 +08:00
;
1999-04-08 02:10:10 +08:00
2014-07-10 22:38:04 +08:00
if_stmt:
if_stmt_without_else { $$ = $1; }
2014-07-10 22:38:04 +08:00
| if_stmt_without_else T_ELSE statement
{ $$ = zend_ast_list_add($1, zend_ast_create(ZEND_AST_IF_ELEM, NULL, $3)); }
1999-04-08 02:10:10 +08:00
;
2014-07-11 05:04:42 +08:00
alt_if_stmt_without_else:
T_IF '(' expr ')' ':' inner_statement_list
{ $$ = zend_ast_create_list(1, ZEND_AST_IF,
zend_ast_create(ZEND_AST_IF_ELEM, $3, $6)); }
| alt_if_stmt_without_else T_ELSEIF '(' expr ')' ':' inner_statement_list
{ $$ = zend_ast_list_add($1,
zend_ast_create(ZEND_AST_IF_ELEM, $4, $7)); }
1999-04-08 02:10:10 +08:00
;
2014-07-11 05:04:42 +08:00
alt_if_stmt:
alt_if_stmt_without_else T_ENDIF ';' { $$ = $1; }
2014-07-11 05:04:42 +08:00
| alt_if_stmt_without_else T_ELSE ':' inner_statement_list T_ENDIF ';'
{ $$ = zend_ast_list_add($1,
zend_ast_create(ZEND_AST_IF_ELEM, NULL, $4)); }
1999-04-08 02:10:10 +08:00
;
parameter_list:
non_empty_parameter_list { $$ = $1; }
| /* empty */ { $$ = zend_ast_create_list(0, ZEND_AST_PARAM_LIST); }
1999-04-08 02:10:10 +08:00
;
non_empty_parameter_list:
parameter
{ $$ = zend_ast_create_list(1, ZEND_AST_PARAM_LIST, $1); }
| non_empty_parameter_list ',' parameter
{ $$ = zend_ast_list_add($1, $3); }
;
parameter:
optional_type is_reference is_variadic T_VARIABLE
{ $$ = zend_ast_create_ex(ZEND_AST_PARAM, $2 | $3, $1, $4, NULL); }
| optional_type is_reference is_variadic T_VARIABLE '=' expr
{ $$ = zend_ast_create_ex(ZEND_AST_PARAM, $2 | $3, $1, $4, $6); }
1999-04-08 02:10:10 +08:00
;
optional_type:
/* empty */ { $$ = NULL; }
| type { $$ = $1; }
;
type:
T_ARRAY { $$ = zend_ast_create_ex(ZEND_AST_TYPE, IS_ARRAY); }
| T_CALLABLE { $$ = zend_ast_create_ex(ZEND_AST_TYPE, IS_CALLABLE); }
| name { $$ = $1; }
2003-03-06 22:31:17 +08:00
;
return_type:
/* empty */ { $$ = NULL; }
| ':' type { $$ = $2; }
;
2014-07-13 19:11:55 +08:00
argument_list:
'(' ')' { $$ = zend_ast_create_list(0, ZEND_AST_ARG_LIST); }
| '(' non_empty_argument_list ')' { $$ = $2; }
2014-06-07 19:06:53 +08:00
;
2014-07-13 19:11:55 +08:00
non_empty_argument_list:
argument
{ $$ = zend_ast_create_list(1, ZEND_AST_ARG_LIST, $1); }
2014-07-13 19:11:55 +08:00
| non_empty_argument_list ',' argument
{ $$ = zend_ast_list_add($1, $3); }
2014-06-07 19:06:53 +08:00
;
2014-07-13 19:11:55 +08:00
argument:
2014-08-30 00:42:05 +08:00
expr { $$ = $1; }
| T_ELLIPSIS expr { $$ = zend_ast_create(ZEND_AST_UNPACK, $2); }
2014-06-07 19:06:53 +08:00
;
1999-04-08 02:10:10 +08:00
global_var_list:
global_var_list ',' global_var { $$ = zend_ast_list_add($1, $3); }
| global_var { $$ = zend_ast_create_list(1, ZEND_AST_STMT_LIST, $1); }
1999-04-08 02:10:10 +08:00
;
global_var:
2014-06-07 19:06:53 +08:00
simple_variable
{ $$ = zend_ast_create(ZEND_AST_GLOBAL, zend_ast_create(ZEND_AST_VAR, $1)); }
1999-04-08 02:10:10 +08:00
;
static_var_list:
static_var_list ',' static_var { $$ = zend_ast_list_add($1, $3); }
| static_var { $$ = zend_ast_create_list(1, ZEND_AST_STMT_LIST, $1); }
;
1999-04-08 02:10:10 +08:00
static_var:
T_VARIABLE { $$ = zend_ast_create(ZEND_AST_STATIC, $1, NULL); }
| T_VARIABLE '=' expr { $$ = zend_ast_create(ZEND_AST_STATIC, $1, $3); }
1999-04-08 02:10:10 +08:00
;
class_statement_list:
class_statement_list class_statement
{ $$ = zend_ast_list_add($1, $2); }
1999-04-08 02:10:10 +08:00
| /* empty */
{ $$ = zend_ast_create_list(0, ZEND_AST_STMT_LIST); }
1999-04-08 02:10:10 +08:00
;
class_statement:
2014-07-19 20:54:56 +08:00
variable_modifiers property_list ';'
2014-12-14 06:06:14 +08:00
{ $$ = zend_ast_append_doc_comment($2); $$->attr = $1; }
2014-07-22 17:55:07 +08:00
| T_CONST class_const_list ';'
{ $$ = $2; RESET_DOC_COMMENT(); }
2014-07-20 04:39:01 +08:00
| T_USE name_list trait_adaptations
{ $$ = zend_ast_create(ZEND_AST_USE_TRAIT, $2, $3); }
| method_modifiers function returns_ref T_STRING '(' parameter_list ')'
return_type backup_doc_comment method_body
{ $$ = zend_ast_create_decl(ZEND_AST_METHOD, $3 | $1, $2, $9,
zend_ast_get_str($4), $6, NULL, $10, $8); }
1999-04-08 02:10:10 +08:00
;
2014-07-20 04:39:01 +08:00
name_list:
name { $$ = zend_ast_create_list(1, ZEND_AST_NAME_LIST, $1); }
| name_list ',' name { $$ = zend_ast_list_add($1, $3); }
Implemented Traits for PHP as proposed in the RFC [TRAITS] # RFC http://wiki.php.net/rfc/horizontalreuse#traits_-_reuse_of_behavior # Ok, here we go, I guess that will result in more discussion, which is fine # by me. But now, the patch is here, and properly archived. # # See below a list of notes to the patch, it also includes a list of # points which should be fixed # # Internals of the Traits Patch # ----------------------------- # # Open TODOs # """""""""" # # - Reflection API # - support for traits for internal classes # - currently destroy_zend_class does not handle that case # # Introduced Structures # """"""""""""""""""""" # # Data structures to encode the composition information specified in the # source: # - zend_trait_method_reference # - zend_trait_precedence # - zend_trait_alias # # Changes # """"""" # # zend_class_entry # - uses NULL terminated lists of pointers for # - trait_aliases # - trait_precedences # - do you prefer an explicit counter? # - the information is only necessary during class composition # but might be interesting for reflection # - did not want to blow up class further with not really necessary length counters # # added keywords # - trait # - insteadof # # Added opcodes # ZEND_ADD_TRAIT # - similar to ZEND_ADD_INTERFACE # - adds the trait to the list of traits of a class, no actual composition done # ZEND_BIND_TRAITS # - emitted in zend_do_end_class_declaration # - concludes the class definition and will initiate the trait composition # when the class definition is encountered during runtime # # Added Flags # ZEND_ACC_TRAIT = 0x120 # ZEND_ACC_IMPLEMENT_TRAITS = 0x400000 # ZEND_FETCH_CLASS_TRAIT = 14 # # zend_vm_execute.h # - not sure whether the handler initialization (ZEND_ADD_TRAIT_SPEC_HANDLER, # ZEND_BIND_TRAITS_SPEC_HANDLER) is correct, maybe it should be more selective # # zend_compile.c # - refactored do_inherit_method_check # split into do_inherit_method_check and do_inheritance_check_on_method # - added helper functions use a '_' as prefix and are not mentioned in the # headers # - _copy_functions # prepare hash-maps of functions which should be merged into a class # here the aliases are handled # - _merge_functions # builds a hash-table of the methods which need to be added to a class # does the conflict detection # - reused php_runkit_function_copy_ctor # - it is not identical with the original code anymore, needed to update it # think I fixed some bugs, not sure whether all have been reported back to runkit # - has to be renamed, left the name for the moment, to make its origin obvious # - here might be optimization potential # - not sure whether everything needs to be copied # - copying the literals might be broken # - added it since the literals array is freed by efree and gave problems # with doubled frees # - all immutable parts of the zend_op array should not be copied # - am not sure which parts are immutable # - and not sure how to avoid doubled frees on the same arrays on shutdown # - _merge_functions_to_class # does the final merging with the target class to handle inherited # and overridden methods # - small helper for NULL terminated lists # zend_init_list, zend_add_to_list # # zend_language_parser.y # - reused class definition for traits # - there should be something with regard to properties # - if they get explicitly defined, it might be worthwhile to # check that there are no collisions with other traits in a composition # (however, I would not introduce elaborate language features to control that # but a notice for such conflicts might be nice to the developers)
2010-04-23 06:05:56 +08:00
;
trait_adaptations:
';' { $$ = NULL; }
| '{' '}' { $$ = NULL; }
| '{' trait_adaptation_list '}' { $$ = $2; }
Implemented Traits for PHP as proposed in the RFC [TRAITS] # RFC http://wiki.php.net/rfc/horizontalreuse#traits_-_reuse_of_behavior # Ok, here we go, I guess that will result in more discussion, which is fine # by me. But now, the patch is here, and properly archived. # # See below a list of notes to the patch, it also includes a list of # points which should be fixed # # Internals of the Traits Patch # ----------------------------- # # Open TODOs # """""""""" # # - Reflection API # - support for traits for internal classes # - currently destroy_zend_class does not handle that case # # Introduced Structures # """"""""""""""""""""" # # Data structures to encode the composition information specified in the # source: # - zend_trait_method_reference # - zend_trait_precedence # - zend_trait_alias # # Changes # """"""" # # zend_class_entry # - uses NULL terminated lists of pointers for # - trait_aliases # - trait_precedences # - do you prefer an explicit counter? # - the information is only necessary during class composition # but might be interesting for reflection # - did not want to blow up class further with not really necessary length counters # # added keywords # - trait # - insteadof # # Added opcodes # ZEND_ADD_TRAIT # - similar to ZEND_ADD_INTERFACE # - adds the trait to the list of traits of a class, no actual composition done # ZEND_BIND_TRAITS # - emitted in zend_do_end_class_declaration # - concludes the class definition and will initiate the trait composition # when the class definition is encountered during runtime # # Added Flags # ZEND_ACC_TRAIT = 0x120 # ZEND_ACC_IMPLEMENT_TRAITS = 0x400000 # ZEND_FETCH_CLASS_TRAIT = 14 # # zend_vm_execute.h # - not sure whether the handler initialization (ZEND_ADD_TRAIT_SPEC_HANDLER, # ZEND_BIND_TRAITS_SPEC_HANDLER) is correct, maybe it should be more selective # # zend_compile.c # - refactored do_inherit_method_check # split into do_inherit_method_check and do_inheritance_check_on_method # - added helper functions use a '_' as prefix and are not mentioned in the # headers # - _copy_functions # prepare hash-maps of functions which should be merged into a class # here the aliases are handled # - _merge_functions # builds a hash-table of the methods which need to be added to a class # does the conflict detection # - reused php_runkit_function_copy_ctor # - it is not identical with the original code anymore, needed to update it # think I fixed some bugs, not sure whether all have been reported back to runkit # - has to be renamed, left the name for the moment, to make its origin obvious # - here might be optimization potential # - not sure whether everything needs to be copied # - copying the literals might be broken # - added it since the literals array is freed by efree and gave problems # with doubled frees # - all immutable parts of the zend_op array should not be copied # - am not sure which parts are immutable # - and not sure how to avoid doubled frees on the same arrays on shutdown # - _merge_functions_to_class # does the final merging with the target class to handle inherited # and overridden methods # - small helper for NULL terminated lists # zend_init_list, zend_add_to_list # # zend_language_parser.y # - reused class definition for traits # - there should be something with regard to properties # - if they get explicitly defined, it might be worthwhile to # check that there are no collisions with other traits in a composition # (however, I would not introduce elaborate language features to control that # but a notice for such conflicts might be nice to the developers)
2010-04-23 06:05:56 +08:00
;
trait_adaptation_list:
2014-07-20 04:39:01 +08:00
trait_adaptation
{ $$ = zend_ast_create_list(1, ZEND_AST_TRAIT_ADAPTATIONS, $1); }
2014-07-20 04:39:01 +08:00
| trait_adaptation_list trait_adaptation
{ $$ = zend_ast_list_add($1, $2); }
Implemented Traits for PHP as proposed in the RFC [TRAITS] # RFC http://wiki.php.net/rfc/horizontalreuse#traits_-_reuse_of_behavior # Ok, here we go, I guess that will result in more discussion, which is fine # by me. But now, the patch is here, and properly archived. # # See below a list of notes to the patch, it also includes a list of # points which should be fixed # # Internals of the Traits Patch # ----------------------------- # # Open TODOs # """""""""" # # - Reflection API # - support for traits for internal classes # - currently destroy_zend_class does not handle that case # # Introduced Structures # """"""""""""""""""""" # # Data structures to encode the composition information specified in the # source: # - zend_trait_method_reference # - zend_trait_precedence # - zend_trait_alias # # Changes # """"""" # # zend_class_entry # - uses NULL terminated lists of pointers for # - trait_aliases # - trait_precedences # - do you prefer an explicit counter? # - the information is only necessary during class composition # but might be interesting for reflection # - did not want to blow up class further with not really necessary length counters # # added keywords # - trait # - insteadof # # Added opcodes # ZEND_ADD_TRAIT # - similar to ZEND_ADD_INTERFACE # - adds the trait to the list of traits of a class, no actual composition done # ZEND_BIND_TRAITS # - emitted in zend_do_end_class_declaration # - concludes the class definition and will initiate the trait composition # when the class definition is encountered during runtime # # Added Flags # ZEND_ACC_TRAIT = 0x120 # ZEND_ACC_IMPLEMENT_TRAITS = 0x400000 # ZEND_FETCH_CLASS_TRAIT = 14 # # zend_vm_execute.h # - not sure whether the handler initialization (ZEND_ADD_TRAIT_SPEC_HANDLER, # ZEND_BIND_TRAITS_SPEC_HANDLER) is correct, maybe it should be more selective # # zend_compile.c # - refactored do_inherit_method_check # split into do_inherit_method_check and do_inheritance_check_on_method # - added helper functions use a '_' as prefix and are not mentioned in the # headers # - _copy_functions # prepare hash-maps of functions which should be merged into a class # here the aliases are handled # - _merge_functions # builds a hash-table of the methods which need to be added to a class # does the conflict detection # - reused php_runkit_function_copy_ctor # - it is not identical with the original code anymore, needed to update it # think I fixed some bugs, not sure whether all have been reported back to runkit # - has to be renamed, left the name for the moment, to make its origin obvious # - here might be optimization potential # - not sure whether everything needs to be copied # - copying the literals might be broken # - added it since the literals array is freed by efree and gave problems # with doubled frees # - all immutable parts of the zend_op array should not be copied # - am not sure which parts are immutable # - and not sure how to avoid doubled frees on the same arrays on shutdown # - _merge_functions_to_class # does the final merging with the target class to handle inherited # and overridden methods # - small helper for NULL terminated lists # zend_init_list, zend_add_to_list # # zend_language_parser.y # - reused class definition for traits # - there should be something with regard to properties # - if they get explicitly defined, it might be worthwhile to # check that there are no collisions with other traits in a composition # (however, I would not introduce elaborate language features to control that # but a notice for such conflicts might be nice to the developers)
2010-04-23 06:05:56 +08:00
;
2014-07-20 04:39:01 +08:00
trait_adaptation:
trait_precedence ';' { $$ = $1; }
| trait_alias ';' { $$ = $1; }
Implemented Traits for PHP as proposed in the RFC [TRAITS] # RFC http://wiki.php.net/rfc/horizontalreuse#traits_-_reuse_of_behavior # Ok, here we go, I guess that will result in more discussion, which is fine # by me. But now, the patch is here, and properly archived. # # See below a list of notes to the patch, it also includes a list of # points which should be fixed # # Internals of the Traits Patch # ----------------------------- # # Open TODOs # """""""""" # # - Reflection API # - support for traits for internal classes # - currently destroy_zend_class does not handle that case # # Introduced Structures # """"""""""""""""""""" # # Data structures to encode the composition information specified in the # source: # - zend_trait_method_reference # - zend_trait_precedence # - zend_trait_alias # # Changes # """"""" # # zend_class_entry # - uses NULL terminated lists of pointers for # - trait_aliases # - trait_precedences # - do you prefer an explicit counter? # - the information is only necessary during class composition # but might be interesting for reflection # - did not want to blow up class further with not really necessary length counters # # added keywords # - trait # - insteadof # # Added opcodes # ZEND_ADD_TRAIT # - similar to ZEND_ADD_INTERFACE # - adds the trait to the list of traits of a class, no actual composition done # ZEND_BIND_TRAITS # - emitted in zend_do_end_class_declaration # - concludes the class definition and will initiate the trait composition # when the class definition is encountered during runtime # # Added Flags # ZEND_ACC_TRAIT = 0x120 # ZEND_ACC_IMPLEMENT_TRAITS = 0x400000 # ZEND_FETCH_CLASS_TRAIT = 14 # # zend_vm_execute.h # - not sure whether the handler initialization (ZEND_ADD_TRAIT_SPEC_HANDLER, # ZEND_BIND_TRAITS_SPEC_HANDLER) is correct, maybe it should be more selective # # zend_compile.c # - refactored do_inherit_method_check # split into do_inherit_method_check and do_inheritance_check_on_method # - added helper functions use a '_' as prefix and are not mentioned in the # headers # - _copy_functions # prepare hash-maps of functions which should be merged into a class # here the aliases are handled # - _merge_functions # builds a hash-table of the methods which need to be added to a class # does the conflict detection # - reused php_runkit_function_copy_ctor # - it is not identical with the original code anymore, needed to update it # think I fixed some bugs, not sure whether all have been reported back to runkit # - has to be renamed, left the name for the moment, to make its origin obvious # - here might be optimization potential # - not sure whether everything needs to be copied # - copying the literals might be broken # - added it since the literals array is freed by efree and gave problems # with doubled frees # - all immutable parts of the zend_op array should not be copied # - am not sure which parts are immutable # - and not sure how to avoid doubled frees on the same arrays on shutdown # - _merge_functions_to_class # does the final merging with the target class to handle inherited # and overridden methods # - small helper for NULL terminated lists # zend_init_list, zend_add_to_list # # zend_language_parser.y # - reused class definition for traits # - there should be something with regard to properties # - if they get explicitly defined, it might be worthwhile to # check that there are no collisions with other traits in a composition # (however, I would not introduce elaborate language features to control that # but a notice for such conflicts might be nice to the developers)
2010-04-23 06:05:56 +08:00
;
trait_precedence:
2014-07-20 04:39:01 +08:00
absolute_trait_method_reference T_INSTEADOF name_list
{ $$ = zend_ast_create(ZEND_AST_TRAIT_PRECEDENCE, $1, $3); }
Implemented Traits for PHP as proposed in the RFC [TRAITS] # RFC http://wiki.php.net/rfc/horizontalreuse#traits_-_reuse_of_behavior # Ok, here we go, I guess that will result in more discussion, which is fine # by me. But now, the patch is here, and properly archived. # # See below a list of notes to the patch, it also includes a list of # points which should be fixed # # Internals of the Traits Patch # ----------------------------- # # Open TODOs # """""""""" # # - Reflection API # - support for traits for internal classes # - currently destroy_zend_class does not handle that case # # Introduced Structures # """"""""""""""""""""" # # Data structures to encode the composition information specified in the # source: # - zend_trait_method_reference # - zend_trait_precedence # - zend_trait_alias # # Changes # """"""" # # zend_class_entry # - uses NULL terminated lists of pointers for # - trait_aliases # - trait_precedences # - do you prefer an explicit counter? # - the information is only necessary during class composition # but might be interesting for reflection # - did not want to blow up class further with not really necessary length counters # # added keywords # - trait # - insteadof # # Added opcodes # ZEND_ADD_TRAIT # - similar to ZEND_ADD_INTERFACE # - adds the trait to the list of traits of a class, no actual composition done # ZEND_BIND_TRAITS # - emitted in zend_do_end_class_declaration # - concludes the class definition and will initiate the trait composition # when the class definition is encountered during runtime # # Added Flags # ZEND_ACC_TRAIT = 0x120 # ZEND_ACC_IMPLEMENT_TRAITS = 0x400000 # ZEND_FETCH_CLASS_TRAIT = 14 # # zend_vm_execute.h # - not sure whether the handler initialization (ZEND_ADD_TRAIT_SPEC_HANDLER, # ZEND_BIND_TRAITS_SPEC_HANDLER) is correct, maybe it should be more selective # # zend_compile.c # - refactored do_inherit_method_check # split into do_inherit_method_check and do_inheritance_check_on_method # - added helper functions use a '_' as prefix and are not mentioned in the # headers # - _copy_functions # prepare hash-maps of functions which should be merged into a class # here the aliases are handled # - _merge_functions # builds a hash-table of the methods which need to be added to a class # does the conflict detection # - reused php_runkit_function_copy_ctor # - it is not identical with the original code anymore, needed to update it # think I fixed some bugs, not sure whether all have been reported back to runkit # - has to be renamed, left the name for the moment, to make its origin obvious # - here might be optimization potential # - not sure whether everything needs to be copied # - copying the literals might be broken # - added it since the literals array is freed by efree and gave problems # with doubled frees # - all immutable parts of the zend_op array should not be copied # - am not sure which parts are immutable # - and not sure how to avoid doubled frees on the same arrays on shutdown # - _merge_functions_to_class # does the final merging with the target class to handle inherited # and overridden methods # - small helper for NULL terminated lists # zend_init_list, zend_add_to_list # # zend_language_parser.y # - reused class definition for traits # - there should be something with regard to properties # - if they get explicitly defined, it might be worthwhile to # check that there are no collisions with other traits in a composition # (however, I would not introduce elaborate language features to control that # but a notice for such conflicts might be nice to the developers)
2010-04-23 06:05:56 +08:00
;
2014-07-20 04:39:01 +08:00
trait_alias:
trait_method_reference T_AS trait_modifiers T_STRING
{ $$ = zend_ast_create_ex(ZEND_AST_TRAIT_ALIAS, $3, $1, $4); }
2014-07-20 04:39:01 +08:00
| trait_method_reference T_AS member_modifier
{ $$ = zend_ast_create_ex(ZEND_AST_TRAIT_ALIAS, $3, $1, NULL); }
Implemented Traits for PHP as proposed in the RFC [TRAITS] # RFC http://wiki.php.net/rfc/horizontalreuse#traits_-_reuse_of_behavior # Ok, here we go, I guess that will result in more discussion, which is fine # by me. But now, the patch is here, and properly archived. # # See below a list of notes to the patch, it also includes a list of # points which should be fixed # # Internals of the Traits Patch # ----------------------------- # # Open TODOs # """""""""" # # - Reflection API # - support for traits for internal classes # - currently destroy_zend_class does not handle that case # # Introduced Structures # """"""""""""""""""""" # # Data structures to encode the composition information specified in the # source: # - zend_trait_method_reference # - zend_trait_precedence # - zend_trait_alias # # Changes # """"""" # # zend_class_entry # - uses NULL terminated lists of pointers for # - trait_aliases # - trait_precedences # - do you prefer an explicit counter? # - the information is only necessary during class composition # but might be interesting for reflection # - did not want to blow up class further with not really necessary length counters # # added keywords # - trait # - insteadof # # Added opcodes # ZEND_ADD_TRAIT # - similar to ZEND_ADD_INTERFACE # - adds the trait to the list of traits of a class, no actual composition done # ZEND_BIND_TRAITS # - emitted in zend_do_end_class_declaration # - concludes the class definition and will initiate the trait composition # when the class definition is encountered during runtime # # Added Flags # ZEND_ACC_TRAIT = 0x120 # ZEND_ACC_IMPLEMENT_TRAITS = 0x400000 # ZEND_FETCH_CLASS_TRAIT = 14 # # zend_vm_execute.h # - not sure whether the handler initialization (ZEND_ADD_TRAIT_SPEC_HANDLER, # ZEND_BIND_TRAITS_SPEC_HANDLER) is correct, maybe it should be more selective # # zend_compile.c # - refactored do_inherit_method_check # split into do_inherit_method_check and do_inheritance_check_on_method # - added helper functions use a '_' as prefix and are not mentioned in the # headers # - _copy_functions # prepare hash-maps of functions which should be merged into a class # here the aliases are handled # - _merge_functions # builds a hash-table of the methods which need to be added to a class # does the conflict detection # - reused php_runkit_function_copy_ctor # - it is not identical with the original code anymore, needed to update it # think I fixed some bugs, not sure whether all have been reported back to runkit # - has to be renamed, left the name for the moment, to make its origin obvious # - here might be optimization potential # - not sure whether everything needs to be copied # - copying the literals might be broken # - added it since the literals array is freed by efree and gave problems # with doubled frees # - all immutable parts of the zend_op array should not be copied # - am not sure which parts are immutable # - and not sure how to avoid doubled frees on the same arrays on shutdown # - _merge_functions_to_class # does the final merging with the target class to handle inherited # and overridden methods # - small helper for NULL terminated lists # zend_init_list, zend_add_to_list # # zend_language_parser.y # - reused class definition for traits # - there should be something with regard to properties # - if they get explicitly defined, it might be worthwhile to # check that there are no collisions with other traits in a composition # (however, I would not introduce elaborate language features to control that # but a notice for such conflicts might be nice to the developers)
2010-04-23 06:05:56 +08:00
;
trait_method_reference:
2014-07-20 04:39:01 +08:00
T_STRING
{ $$ = zend_ast_create(ZEND_AST_METHOD_REFERENCE, NULL, $1); }
| absolute_trait_method_reference { $$ = $1; }
Implemented Traits for PHP as proposed in the RFC [TRAITS] # RFC http://wiki.php.net/rfc/horizontalreuse#traits_-_reuse_of_behavior # Ok, here we go, I guess that will result in more discussion, which is fine # by me. But now, the patch is here, and properly archived. # # See below a list of notes to the patch, it also includes a list of # points which should be fixed # # Internals of the Traits Patch # ----------------------------- # # Open TODOs # """""""""" # # - Reflection API # - support for traits for internal classes # - currently destroy_zend_class does not handle that case # # Introduced Structures # """"""""""""""""""""" # # Data structures to encode the composition information specified in the # source: # - zend_trait_method_reference # - zend_trait_precedence # - zend_trait_alias # # Changes # """"""" # # zend_class_entry # - uses NULL terminated lists of pointers for # - trait_aliases # - trait_precedences # - do you prefer an explicit counter? # - the information is only necessary during class composition # but might be interesting for reflection # - did not want to blow up class further with not really necessary length counters # # added keywords # - trait # - insteadof # # Added opcodes # ZEND_ADD_TRAIT # - similar to ZEND_ADD_INTERFACE # - adds the trait to the list of traits of a class, no actual composition done # ZEND_BIND_TRAITS # - emitted in zend_do_end_class_declaration # - concludes the class definition and will initiate the trait composition # when the class definition is encountered during runtime # # Added Flags # ZEND_ACC_TRAIT = 0x120 # ZEND_ACC_IMPLEMENT_TRAITS = 0x400000 # ZEND_FETCH_CLASS_TRAIT = 14 # # zend_vm_execute.h # - not sure whether the handler initialization (ZEND_ADD_TRAIT_SPEC_HANDLER, # ZEND_BIND_TRAITS_SPEC_HANDLER) is correct, maybe it should be more selective # # zend_compile.c # - refactored do_inherit_method_check # split into do_inherit_method_check and do_inheritance_check_on_method # - added helper functions use a '_' as prefix and are not mentioned in the # headers # - _copy_functions # prepare hash-maps of functions which should be merged into a class # here the aliases are handled # - _merge_functions # builds a hash-table of the methods which need to be added to a class # does the conflict detection # - reused php_runkit_function_copy_ctor # - it is not identical with the original code anymore, needed to update it # think I fixed some bugs, not sure whether all have been reported back to runkit # - has to be renamed, left the name for the moment, to make its origin obvious # - here might be optimization potential # - not sure whether everything needs to be copied # - copying the literals might be broken # - added it since the literals array is freed by efree and gave problems # with doubled frees # - all immutable parts of the zend_op array should not be copied # - am not sure which parts are immutable # - and not sure how to avoid doubled frees on the same arrays on shutdown # - _merge_functions_to_class # does the final merging with the target class to handle inherited # and overridden methods # - small helper for NULL terminated lists # zend_init_list, zend_add_to_list # # zend_language_parser.y # - reused class definition for traits # - there should be something with regard to properties # - if they get explicitly defined, it might be worthwhile to # check that there are no collisions with other traits in a composition # (however, I would not introduce elaborate language features to control that # but a notice for such conflicts might be nice to the developers)
2010-04-23 06:05:56 +08:00
;
2014-07-20 04:39:01 +08:00
absolute_trait_method_reference:
name T_PAAMAYIM_NEKUDOTAYIM T_STRING
{ $$ = zend_ast_create(ZEND_AST_METHOD_REFERENCE, $1, $3); }
Implemented Traits for PHP as proposed in the RFC [TRAITS] # RFC http://wiki.php.net/rfc/horizontalreuse#traits_-_reuse_of_behavior # Ok, here we go, I guess that will result in more discussion, which is fine # by me. But now, the patch is here, and properly archived. # # See below a list of notes to the patch, it also includes a list of # points which should be fixed # # Internals of the Traits Patch # ----------------------------- # # Open TODOs # """""""""" # # - Reflection API # - support for traits for internal classes # - currently destroy_zend_class does not handle that case # # Introduced Structures # """"""""""""""""""""" # # Data structures to encode the composition information specified in the # source: # - zend_trait_method_reference # - zend_trait_precedence # - zend_trait_alias # # Changes # """"""" # # zend_class_entry # - uses NULL terminated lists of pointers for # - trait_aliases # - trait_precedences # - do you prefer an explicit counter? # - the information is only necessary during class composition # but might be interesting for reflection # - did not want to blow up class further with not really necessary length counters # # added keywords # - trait # - insteadof # # Added opcodes # ZEND_ADD_TRAIT # - similar to ZEND_ADD_INTERFACE # - adds the trait to the list of traits of a class, no actual composition done # ZEND_BIND_TRAITS # - emitted in zend_do_end_class_declaration # - concludes the class definition and will initiate the trait composition # when the class definition is encountered during runtime # # Added Flags # ZEND_ACC_TRAIT = 0x120 # ZEND_ACC_IMPLEMENT_TRAITS = 0x400000 # ZEND_FETCH_CLASS_TRAIT = 14 # # zend_vm_execute.h # - not sure whether the handler initialization (ZEND_ADD_TRAIT_SPEC_HANDLER, # ZEND_BIND_TRAITS_SPEC_HANDLER) is correct, maybe it should be more selective # # zend_compile.c # - refactored do_inherit_method_check # split into do_inherit_method_check and do_inheritance_check_on_method # - added helper functions use a '_' as prefix and are not mentioned in the # headers # - _copy_functions # prepare hash-maps of functions which should be merged into a class # here the aliases are handled # - _merge_functions # builds a hash-table of the methods which need to be added to a class # does the conflict detection # - reused php_runkit_function_copy_ctor # - it is not identical with the original code anymore, needed to update it # think I fixed some bugs, not sure whether all have been reported back to runkit # - has to be renamed, left the name for the moment, to make its origin obvious # - here might be optimization potential # - not sure whether everything needs to be copied # - copying the literals might be broken # - added it since the literals array is freed by efree and gave problems # with doubled frees # - all immutable parts of the zend_op array should not be copied # - am not sure which parts are immutable # - and not sure how to avoid doubled frees on the same arrays on shutdown # - _merge_functions_to_class # does the final merging with the target class to handle inherited # and overridden methods # - small helper for NULL terminated lists # zend_init_list, zend_add_to_list # # zend_language_parser.y # - reused class definition for traits # - there should be something with regard to properties # - if they get explicitly defined, it might be worthwhile to # check that there are no collisions with other traits in a composition # (however, I would not introduce elaborate language features to control that # but a notice for such conflicts might be nice to the developers)
2010-04-23 06:05:56 +08:00
;
trait_modifiers:
/* empty */ { $$ = 0; }
| member_modifier { $$ = $1; }
Implemented Traits for PHP as proposed in the RFC [TRAITS] # RFC http://wiki.php.net/rfc/horizontalreuse#traits_-_reuse_of_behavior # Ok, here we go, I guess that will result in more discussion, which is fine # by me. But now, the patch is here, and properly archived. # # See below a list of notes to the patch, it also includes a list of # points which should be fixed # # Internals of the Traits Patch # ----------------------------- # # Open TODOs # """""""""" # # - Reflection API # - support for traits for internal classes # - currently destroy_zend_class does not handle that case # # Introduced Structures # """"""""""""""""""""" # # Data structures to encode the composition information specified in the # source: # - zend_trait_method_reference # - zend_trait_precedence # - zend_trait_alias # # Changes # """"""" # # zend_class_entry # - uses NULL terminated lists of pointers for # - trait_aliases # - trait_precedences # - do you prefer an explicit counter? # - the information is only necessary during class composition # but might be interesting for reflection # - did not want to blow up class further with not really necessary length counters # # added keywords # - trait # - insteadof # # Added opcodes # ZEND_ADD_TRAIT # - similar to ZEND_ADD_INTERFACE # - adds the trait to the list of traits of a class, no actual composition done # ZEND_BIND_TRAITS # - emitted in zend_do_end_class_declaration # - concludes the class definition and will initiate the trait composition # when the class definition is encountered during runtime # # Added Flags # ZEND_ACC_TRAIT = 0x120 # ZEND_ACC_IMPLEMENT_TRAITS = 0x400000 # ZEND_FETCH_CLASS_TRAIT = 14 # # zend_vm_execute.h # - not sure whether the handler initialization (ZEND_ADD_TRAIT_SPEC_HANDLER, # ZEND_BIND_TRAITS_SPEC_HANDLER) is correct, maybe it should be more selective # # zend_compile.c # - refactored do_inherit_method_check # split into do_inherit_method_check and do_inheritance_check_on_method # - added helper functions use a '_' as prefix and are not mentioned in the # headers # - _copy_functions # prepare hash-maps of functions which should be merged into a class # here the aliases are handled # - _merge_functions # builds a hash-table of the methods which need to be added to a class # does the conflict detection # - reused php_runkit_function_copy_ctor # - it is not identical with the original code anymore, needed to update it # think I fixed some bugs, not sure whether all have been reported back to runkit # - has to be renamed, left the name for the moment, to make its origin obvious # - here might be optimization potential # - not sure whether everything needs to be copied # - copying the literals might be broken # - added it since the literals array is freed by efree and gave problems # with doubled frees # - all immutable parts of the zend_op array should not be copied # - am not sure which parts are immutable # - and not sure how to avoid doubled frees on the same arrays on shutdown # - _merge_functions_to_class # does the final merging with the target class to handle inherited # and overridden methods # - small helper for NULL terminated lists # zend_init_list, zend_add_to_list # # zend_language_parser.y # - reused class definition for traits # - there should be something with regard to properties # - if they get explicitly defined, it might be worthwhile to # check that there are no collisions with other traits in a composition # (however, I would not introduce elaborate language features to control that # but a notice for such conflicts might be nice to the developers)
2010-04-23 06:05:56 +08:00
;
2003-02-11 17:48:37 +08:00
method_body:
';' /* abstract method */ { $$ = NULL; }
| '{' inner_statement_list '}' { $$ = $2; }
2003-02-11 17:48:37 +08:00
;
variable_modifiers:
non_empty_member_modifiers { $$ = $1; }
| T_VAR { $$ = ZEND_ACC_PUBLIC; }
;
method_modifiers:
/* empty */ { $$ = ZEND_ACC_PUBLIC; }
2014-07-27 18:17:36 +08:00
| non_empty_member_modifiers
{ $$ = $1; if (!($$ & ZEND_ACC_PPP_MASK)) { $$ |= ZEND_ACC_PUBLIC; } }
2002-06-29 23:38:40 +08:00
;
1999-04-08 02:10:10 +08:00
2003-02-11 17:48:37 +08:00
non_empty_member_modifiers:
member_modifier { $$ = $1; }
2014-07-27 18:17:36 +08:00
| non_empty_member_modifiers member_modifier
{ $$ = zend_add_member_modifier($1, $2); }
1999-04-08 02:10:10 +08:00
;
2003-02-11 17:48:37 +08:00
member_modifier:
T_PUBLIC { $$ = ZEND_ACC_PUBLIC; }
| T_PROTECTED { $$ = ZEND_ACC_PROTECTED; }
| T_PRIVATE { $$ = ZEND_ACC_PRIVATE; }
| T_STATIC { $$ = ZEND_ACC_STATIC; }
| T_ABSTRACT { $$ = ZEND_ACC_ABSTRACT; }
| T_FINAL { $$ = ZEND_ACC_FINAL; }
;
2014-07-19 20:54:56 +08:00
property_list:
property_list ',' property { $$ = zend_ast_list_add($1, $3); }
| property { $$ = zend_ast_create_list(1, ZEND_AST_PROP_DECL, $1); }
2014-07-19 20:54:56 +08:00
;
property:
T_VARIABLE { $$ = zend_ast_create(ZEND_AST_PROP_ELEM, $1, NULL); }
2014-07-19 20:54:56 +08:00
| T_VARIABLE '=' expr
{ $$ = zend_ast_create(ZEND_AST_PROP_ELEM, $1, $3); }
;
2014-07-19 21:13:50 +08:00
class_const_list:
class_const_list ',' const_decl { $$ = zend_ast_list_add($1, $3); }
| const_decl { $$ = zend_ast_create_list(1, ZEND_AST_CLASS_CONST_DECL, $1); }
2014-07-19 21:13:50 +08:00
;
2014-07-22 17:55:07 +08:00
const_decl:
T_STRING '=' expr { $$ = zend_ast_create(ZEND_AST_CONST_ELEM, $1, $3); }
;
echo_expr_list:
echo_expr_list ',' echo_expr { $$ = zend_ast_list_add($1, $3); }
| echo_expr { $$ = zend_ast_create_list(1, ZEND_AST_STMT_LIST, $1); }
2014-07-08 03:14:14 +08:00
;
echo_expr:
expr { $$ = zend_ast_create(ZEND_AST_ECHO, $1); }
1999-04-08 02:10:10 +08:00
;
for_exprs:
/* empty */ { $$ = NULL; }
| non_empty_for_exprs { $$ = $1; }
;
non_empty_for_exprs:
non_empty_for_exprs ',' expr { $$ = zend_ast_list_add($1, $3); }
| expr { $$ = zend_ast_create_list(1, ZEND_AST_EXPR_LIST, $1); }
1999-04-08 02:10:10 +08:00
;
anonymous_class:
T_CLASS ctor_arguments {
$<num>$ = CG(zend_lineno);
} extends_from implements_list backup_doc_comment '{' class_statement_list '}' {
zend_ast *decl = zend_ast_create_decl(
ZEND_AST_CLASS,
ZEND_ACC_ANON_CLASS,
$<num>3, $6, $4, $4, $5, $8, NULL);
$$ = zend_ast_create(ZEND_AST_NEW, decl, $2);
}
;
new_expr:
T_NEW class_name_reference ctor_arguments
{ $$ = zend_ast_create(ZEND_AST_NEW, $2, $3); }
| T_NEW anonymous_class
{ $$ = $2; }
;
expr_without_variable:
2014-06-07 19:06:53 +08:00
T_LIST '(' assignment_list ')' '=' expr
{ $$ = zend_ast_create(ZEND_AST_ASSIGN, $3, $6); }
2014-06-07 19:06:53 +08:00
| variable '=' expr
{ $$ = zend_ast_create(ZEND_AST_ASSIGN, $1, $3); }
2014-06-07 19:06:53 +08:00
| variable '=' '&' variable
{ $$ = zend_ast_create(ZEND_AST_ASSIGN_REF, $1, $4); }
| T_CLONE expr { $$ = zend_ast_create(ZEND_AST_CLONE, $2); }
2014-06-07 19:06:53 +08:00
| variable T_PLUS_EQUAL expr
{ $$ = zend_ast_create_assign_op(ZEND_ASSIGN_ADD, $1, $3); }
2014-06-07 19:06:53 +08:00
| variable T_MINUS_EQUAL expr
{ $$ = zend_ast_create_assign_op(ZEND_ASSIGN_SUB, $1, $3); }
2014-06-07 19:06:53 +08:00
| variable T_MUL_EQUAL expr
{ $$ = zend_ast_create_assign_op(ZEND_ASSIGN_MUL, $1, $3); }
2014-06-07 19:06:53 +08:00
| variable T_POW_EQUAL expr
{ $$ = zend_ast_create_assign_op(ZEND_ASSIGN_POW, $1, $3); }
2014-06-07 19:06:53 +08:00
| variable T_DIV_EQUAL expr
{ $$ = zend_ast_create_assign_op(ZEND_ASSIGN_DIV, $1, $3); }
2014-06-07 19:06:53 +08:00
| variable T_CONCAT_EQUAL expr
{ $$ = zend_ast_create_assign_op(ZEND_ASSIGN_CONCAT, $1, $3); }
2014-06-07 19:06:53 +08:00
| variable T_MOD_EQUAL expr
{ $$ = zend_ast_create_assign_op(ZEND_ASSIGN_MOD, $1, $3); }
2014-06-07 19:06:53 +08:00
| variable T_AND_EQUAL expr
{ $$ = zend_ast_create_assign_op(ZEND_ASSIGN_BW_AND, $1, $3); }
2015-01-03 17:22:58 +08:00
| variable T_OR_EQUAL expr
{ $$ = zend_ast_create_assign_op(ZEND_ASSIGN_BW_OR, $1, $3); }
2015-01-03 17:22:58 +08:00
| variable T_XOR_EQUAL expr
{ $$ = zend_ast_create_assign_op(ZEND_ASSIGN_BW_XOR, $1, $3); }
2014-06-07 19:06:53 +08:00
| variable T_SL_EQUAL expr
{ $$ = zend_ast_create_assign_op(ZEND_ASSIGN_SL, $1, $3); }
2014-06-07 19:06:53 +08:00
| variable T_SR_EQUAL expr
{ $$ = zend_ast_create_assign_op(ZEND_ASSIGN_SR, $1, $3); }
| variable T_INC { $$ = zend_ast_create(ZEND_AST_POST_INC, $1); }
| T_INC variable { $$ = zend_ast_create(ZEND_AST_PRE_INC, $2); }
| variable T_DEC { $$ = zend_ast_create(ZEND_AST_POST_DEC, $1); }
| T_DEC variable { $$ = zend_ast_create(ZEND_AST_PRE_DEC, $2); }
| expr T_BOOLEAN_OR expr
{ $$ = zend_ast_create(ZEND_AST_OR, $1, $3); }
| expr T_BOOLEAN_AND expr
{ $$ = zend_ast_create(ZEND_AST_AND, $1, $3); }
| expr T_LOGICAL_OR expr
{ $$ = zend_ast_create(ZEND_AST_OR, $1, $3); }
| expr T_LOGICAL_AND expr
{ $$ = zend_ast_create(ZEND_AST_AND, $1, $3); }
| expr T_LOGICAL_XOR expr
{ $$ = zend_ast_create_binary_op(ZEND_BOOL_XOR, $1, $3); }
| expr '|' expr { $$ = zend_ast_create_binary_op(ZEND_BW_OR, $1, $3); }
| expr '&' expr { $$ = zend_ast_create_binary_op(ZEND_BW_AND, $1, $3); }
| expr '^' expr { $$ = zend_ast_create_binary_op(ZEND_BW_XOR, $1, $3); }
| expr '.' expr { $$ = zend_ast_create_binary_op(ZEND_CONCAT, $1, $3); }
| expr '+' expr { $$ = zend_ast_create_binary_op(ZEND_ADD, $1, $3); }
| expr '-' expr { $$ = zend_ast_create_binary_op(ZEND_SUB, $1, $3); }
| expr '*' expr { $$ = zend_ast_create_binary_op(ZEND_MUL, $1, $3); }
| expr T_POW expr { $$ = zend_ast_create_binary_op(ZEND_POW, $1, $3); }
| expr '/' expr { $$ = zend_ast_create_binary_op(ZEND_DIV, $1, $3); }
| expr '%' expr { $$ = zend_ast_create_binary_op(ZEND_MOD, $1, $3); }
| expr T_SL expr { $$ = zend_ast_create_binary_op(ZEND_SL, $1, $3); }
| expr T_SR expr { $$ = zend_ast_create_binary_op(ZEND_SR, $1, $3); }
| '+' expr %prec T_INC { $$ = zend_ast_create(ZEND_AST_UNARY_PLUS, $2); }
| '-' expr %prec T_INC { $$ = zend_ast_create(ZEND_AST_UNARY_MINUS, $2); }
| '!' expr { $$ = zend_ast_create_ex(ZEND_AST_UNARY_OP, ZEND_BOOL_NOT, $2); }
| '~' expr { $$ = zend_ast_create_ex(ZEND_AST_UNARY_OP, ZEND_BW_NOT, $2); }
| expr T_IS_IDENTICAL expr
{ $$ = zend_ast_create_binary_op(ZEND_IS_IDENTICAL, $1, $3); }
| expr T_IS_NOT_IDENTICAL expr
{ $$ = zend_ast_create_binary_op(ZEND_IS_NOT_IDENTICAL, $1, $3); }
| expr T_IS_EQUAL expr
{ $$ = zend_ast_create_binary_op(ZEND_IS_EQUAL, $1, $3); }
| expr T_IS_NOT_EQUAL expr
{ $$ = zend_ast_create_binary_op(ZEND_IS_NOT_EQUAL, $1, $3); }
| expr '<' expr
{ $$ = zend_ast_create_binary_op(ZEND_IS_SMALLER, $1, $3); }
| expr T_IS_SMALLER_OR_EQUAL expr
{ $$ = zend_ast_create_binary_op(ZEND_IS_SMALLER_OR_EQUAL, $1, $3); }
| expr '>' expr
{ $$ = zend_ast_create(ZEND_AST_GREATER, $1, $3); }
| expr T_IS_GREATER_OR_EQUAL expr
{ $$ = zend_ast_create(ZEND_AST_GREATER_EQUAL, $1, $3); }
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| expr T_SPACESHIP expr
{ $$ = zend_ast_create_binary_op(ZEND_SPACESHIP, $1, $3); }
| expr T_INSTANCEOF class_name_reference
{ $$ = zend_ast_create(ZEND_AST_INSTANCEOF, $1, $3); }
| '(' expr ')' { $$ = $2; }
| new_expr { $$ = $1; }
| expr '?' expr ':' expr
{ $$ = zend_ast_create(ZEND_AST_CONDITIONAL, $1, $3, $5); }
| expr '?' ':' expr
{ $$ = zend_ast_create(ZEND_AST_CONDITIONAL, $1, NULL, $4); }
| expr T_COALESCE expr
{ $$ = zend_ast_create(ZEND_AST_COALESCE, $1, $3); }
| internal_functions_in_yacc { $$ = $1; }
| T_INT_CAST expr { $$ = zend_ast_create_cast(IS_LONG, $2); }
| T_DOUBLE_CAST expr { $$ = zend_ast_create_cast(IS_DOUBLE, $2); }
| T_STRING_CAST expr { $$ = zend_ast_create_cast(IS_STRING, $2); }
| T_ARRAY_CAST expr { $$ = zend_ast_create_cast(IS_ARRAY, $2); }
| T_OBJECT_CAST expr { $$ = zend_ast_create_cast(IS_OBJECT, $2); }
| T_BOOL_CAST expr { $$ = zend_ast_create_cast(_IS_BOOL, $2); }
| T_UNSET_CAST expr { $$ = zend_ast_create_cast(IS_NULL, $2); }
| T_EXIT exit_expr { $$ = zend_ast_create(ZEND_AST_EXIT, $2); }
| '@' expr { $$ = zend_ast_create(ZEND_AST_SILENCE, $2); }
| scalar { $$ = $1; }
| '`' backticks_expr '`' { $$ = zend_ast_create(ZEND_AST_SHELL_EXEC, $2); }
| T_PRINT expr { $$ = zend_ast_create(ZEND_AST_PRINT, $2); }
| T_YIELD { $$ = zend_ast_create(ZEND_AST_YIELD, NULL, NULL); }
| T_YIELD expr { $$ = zend_ast_create(ZEND_AST_YIELD, $2, NULL); }
| T_YIELD expr T_DOUBLE_ARROW expr { $$ = zend_ast_create(ZEND_AST_YIELD, $4, $2); }
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| T_YIELD_FROM expr { $$ = zend_ast_create(ZEND_AST_YIELD_FROM, $2); }
| function returns_ref '(' parameter_list ')' lexical_vars return_type
backup_doc_comment '{' inner_statement_list '}'
{ $$ = zend_ast_create_decl(ZEND_AST_CLOSURE, $2, $1, $8,
zend_string_init("{closure}", sizeof("{closure}") - 1, 0),
$4, $6, $10, $7); }
| T_STATIC function returns_ref '(' parameter_list ')' lexical_vars
return_type backup_doc_comment '{' inner_statement_list '}'
{ $$ = zend_ast_create_decl(ZEND_AST_CLOSURE, $3 | ZEND_ACC_STATIC, $2, $9,
zend_string_init("{closure}", sizeof("{closure}") - 1, 0),
$5, $7, $11, $8); }
;
function:
T_FUNCTION { $$ = CG(zend_lineno); }
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;
backup_doc_comment:
/* empty */ { $$ = CG(doc_comment); CG(doc_comment) = NULL; }
;
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returns_ref:
/* empty */ { $$ = 0; }
| '&' { $$ = ZEND_ACC_RETURN_REFERENCE; }
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;
lexical_vars:
/* empty */ { $$ = NULL; }
| T_USE '(' lexical_var_list ')' { $$ = $3; }
;
lexical_var_list:
lexical_var_list ',' lexical_var { $$ = zend_ast_list_add($1, $3); }
| lexical_var { $$ = zend_ast_create_list(1, ZEND_AST_CLOSURE_USES, $1); }
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;
lexical_var:
T_VARIABLE { $$ = $1; }
| '&' T_VARIABLE { $$ = $2; $$->attr = 1; }
1999-04-08 02:10:10 +08:00
;
function_call:
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name argument_list
{ $$ = zend_ast_create(ZEND_AST_CALL, $1, $2); }
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| class_name T_PAAMAYIM_NEKUDOTAYIM member_name argument_list
{ $$ = zend_ast_create(ZEND_AST_STATIC_CALL, $1, $3, $4); }
2014-07-13 19:11:55 +08:00
| variable_class_name T_PAAMAYIM_NEKUDOTAYIM member_name argument_list
{ $$ = zend_ast_create(ZEND_AST_STATIC_CALL, $1, $3, $4); }
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| callable_expr argument_list
{ $$ = zend_ast_create(ZEND_AST_CALL, $1, $2); }
;
class_name:
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T_STATIC
{ zval zv; ZVAL_STRINGL(&zv, "static", sizeof("static")-1);
$$ = zend_ast_create_zval_ex(&zv, ZEND_NAME_NOT_FQ); }
| name { $$ = $1; }
;
class_name_reference:
class_name { $$ = $1; }
| new_variable { $$ = $1; }
;
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exit_expr:
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/* empty */ { $$ = NULL; }
| '(' optional_expr ')' { $$ = $2; }
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;
backticks_expr:
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/* empty */
{ $$ = zend_ast_create_zval_from_str(STR_EMPTY_ALLOC()); }
| T_ENCAPSED_AND_WHITESPACE { $$ = $1; }
| encaps_list { $$ = $1; }
;
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ctor_arguments:
/* empty */ { $$ = zend_ast_create_list(0, ZEND_AST_ARG_LIST); }
| argument_list { $$ = $1; }
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;
dereferencable_scalar:
T_ARRAY '(' array_pair_list ')' { $$ = $3; }
| '[' array_pair_list ']' { $$ = $2; }
| T_CONSTANT_ENCAPSED_STRING { $$ = $1; }
;
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scalar:
T_LNUMBER { $$ = $1; }
| T_DNUMBER { $$ = $1; }
| T_LINE { $$ = zend_ast_create_ex(ZEND_AST_MAGIC_CONST, T_LINE); }
| T_FILE { $$ = zend_ast_create_ex(ZEND_AST_MAGIC_CONST, T_FILE); }
| T_DIR { $$ = zend_ast_create_ex(ZEND_AST_MAGIC_CONST, T_DIR); }
| T_TRAIT_C { $$ = zend_ast_create_ex(ZEND_AST_MAGIC_CONST, T_TRAIT_C); }
| T_METHOD_C { $$ = zend_ast_create_ex(ZEND_AST_MAGIC_CONST, T_METHOD_C); }
| T_FUNC_C { $$ = zend_ast_create_ex(ZEND_AST_MAGIC_CONST, T_FUNC_C); }
| T_NS_C { $$ = zend_ast_create_ex(ZEND_AST_MAGIC_CONST, T_NS_C); }
| T_CLASS_C { $$ = zend_ast_create_ex(ZEND_AST_MAGIC_CONST, T_CLASS_C); }
| T_START_HEREDOC T_ENCAPSED_AND_WHITESPACE T_END_HEREDOC { $$ = $2; }
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| T_START_HEREDOC T_END_HEREDOC
{ $$ = zend_ast_create_zval_from_str(STR_EMPTY_ALLOC()); }
| '"' encaps_list '"' { $$ = $2; }
| T_START_HEREDOC encaps_list T_END_HEREDOC { $$ = $2; }
| dereferencable_scalar { $$ = $1; }
| class_name_scalar { $$ = $1; }
| constant { $$ = $1; }
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;
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constant:
name { $$ = zend_ast_create(ZEND_AST_CONST, $1); }
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| class_name T_PAAMAYIM_NEKUDOTAYIM T_STRING
{ $$ = zend_ast_create(ZEND_AST_CLASS_CONST, $1, $3); }
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| variable_class_name T_PAAMAYIM_NEKUDOTAYIM T_STRING
{ $$ = zend_ast_create(ZEND_AST_CLASS_CONST, $1, $3); }
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;
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possible_comma:
/* empty */
| ','
;
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expr:
variable { $$ = $1; }
| expr_without_variable { $$ = $1; }
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;
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optional_expr:
/* empty */ { $$ = NULL; }
| expr { $$ = $1; }
;
variable_class_name:
dereferencable { $$ = $1; }
;
dereferencable:
variable { $$ = $1; }
| '(' expr ')' { $$ = $2; }
| dereferencable_scalar { $$ = $1; }
;
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callable_expr:
callable_variable { $$ = $1; }
| '(' expr ')' { $$ = $2; }
| dereferencable_scalar { $$ = $1; }
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;
callable_variable:
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simple_variable
{ $$ = zend_ast_create(ZEND_AST_VAR, $1); }
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| dereferencable '[' optional_expr ']'
{ $$ = zend_ast_create(ZEND_AST_DIM, $1, $3); }
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| constant '[' optional_expr ']'
{ $$ = zend_ast_create(ZEND_AST_DIM, $1, $3); }
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| dereferencable '{' expr '}'
{ $$ = zend_ast_create(ZEND_AST_DIM, $1, $3); }
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| dereferencable T_OBJECT_OPERATOR member_name argument_list
{ $$ = zend_ast_create(ZEND_AST_METHOD_CALL, $1, $3, $4); }
| function_call { $$ = $1; }
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;
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variable:
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callable_variable
{ $$ = $1; }
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| static_member
{ $$ = $1; }
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| dereferencable T_OBJECT_OPERATOR member_name
{ $$ = zend_ast_create(ZEND_AST_PROP, $1, $3); }
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;
simple_variable:
T_VARIABLE { $$ = $1; }
| '$' '{' expr '}' { $$ = $3; }
| '$' simple_variable { $$ = zend_ast_create(ZEND_AST_VAR, $2); }
1999-04-08 02:10:10 +08:00
;
static_member:
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class_name T_PAAMAYIM_NEKUDOTAYIM simple_variable
{ $$ = zend_ast_create(ZEND_AST_STATIC_PROP, $1, $3); }
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| variable_class_name T_PAAMAYIM_NEKUDOTAYIM simple_variable
{ $$ = zend_ast_create(ZEND_AST_STATIC_PROP, $1, $3); }
;
new_variable:
simple_variable
{ $$ = zend_ast_create(ZEND_AST_VAR, $1); }
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| new_variable '[' optional_expr ']'
{ $$ = zend_ast_create(ZEND_AST_DIM, $1, $3); }
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| new_variable '{' expr '}'
{ $$ = zend_ast_create(ZEND_AST_DIM, $1, $3); }
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| new_variable T_OBJECT_OPERATOR member_name
{ $$ = zend_ast_create(ZEND_AST_PROP, $1, $3); }
| class_name T_PAAMAYIM_NEKUDOTAYIM simple_variable
{ $$ = zend_ast_create(ZEND_AST_STATIC_PROP, $1, $3); }
| new_variable T_PAAMAYIM_NEKUDOTAYIM simple_variable
{ $$ = zend_ast_create(ZEND_AST_STATIC_PROP, $1, $3); }
;
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member_name:
T_STRING { $$ = $1; }
| '{' expr '}' { $$ = $2; }
| simple_variable { $$ = zend_ast_create(ZEND_AST_VAR, $1); }
1999-04-08 02:10:10 +08:00
;
assignment_list:
assignment_list ',' assignment_list_element
{ $$ = zend_ast_list_add($1, $3); }
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| assignment_list_element
{ $$ = zend_ast_create_list(1, ZEND_AST_LIST, $1); }
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;
assignment_list_element:
variable { $$ = $1; }
| T_LIST '(' assignment_list ')' { $$ = $3; }
| /* empty */ { $$ = NULL; }
1999-04-08 02:10:10 +08:00
;
array_pair_list:
/* empty */ { $$ = zend_ast_create_list(0, ZEND_AST_ARRAY); }
| non_empty_array_pair_list possible_comma { $$ = $1; }
1999-04-08 02:10:10 +08:00
;
non_empty_array_pair_list:
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non_empty_array_pair_list ',' array_pair
{ $$ = zend_ast_list_add($1, $3); }
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| array_pair
{ $$ = zend_ast_create_list(1, ZEND_AST_ARRAY, $1); }
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;
array_pair:
expr T_DOUBLE_ARROW expr
{ $$ = zend_ast_create(ZEND_AST_ARRAY_ELEM, $3, $1); }
| expr { $$ = zend_ast_create(ZEND_AST_ARRAY_ELEM, $1, NULL); }
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| expr T_DOUBLE_ARROW '&' variable
{ $$ = zend_ast_create_ex(ZEND_AST_ARRAY_ELEM, 1, $4, $1); }
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| '&' variable
{ $$ = zend_ast_create_ex(ZEND_AST_ARRAY_ELEM, 1, $2, NULL); }
1999-04-08 02:10:10 +08:00
;
encaps_list:
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encaps_list encaps_var
{ $$ = zend_ast_list_add($1, $2); }
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| encaps_list T_ENCAPSED_AND_WHITESPACE
{ $$ = zend_ast_list_add($1, $2); }
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| encaps_var
{ $$ = zend_ast_create_list(1, ZEND_AST_ENCAPS_LIST, $1); }
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| T_ENCAPSED_AND_WHITESPACE encaps_var
{ $$ = zend_ast_create_list(2, ZEND_AST_ENCAPS_LIST, $1, $2); }
1999-04-08 02:10:10 +08:00
;
encaps_var:
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T_VARIABLE
{ $$ = zend_ast_create(ZEND_AST_VAR, $1); }
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| T_VARIABLE '[' encaps_var_offset ']'
{ $$ = zend_ast_create(ZEND_AST_DIM,
zend_ast_create(ZEND_AST_VAR, $1), $3); }
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| T_VARIABLE T_OBJECT_OPERATOR T_STRING
{ $$ = zend_ast_create(ZEND_AST_PROP,
zend_ast_create(ZEND_AST_VAR, $1), $3); }
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| T_DOLLAR_OPEN_CURLY_BRACES expr '}'
{ $$ = zend_ast_create(ZEND_AST_VAR, $2); }
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| T_DOLLAR_OPEN_CURLY_BRACES T_STRING_VARNAME '}'
{ $$ = zend_ast_create(ZEND_AST_VAR, $2); }
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| T_DOLLAR_OPEN_CURLY_BRACES T_STRING_VARNAME '[' expr ']' '}'
{ $$ = zend_ast_create(ZEND_AST_DIM,
zend_ast_create(ZEND_AST_VAR, $2), $4); }
| T_CURLY_OPEN variable '}' { $$ = $2; }
1999-04-08 02:10:10 +08:00
;
encaps_var_offset:
T_STRING { $$ = $1; }
| T_NUM_STRING { $$ = $1; }
| T_VARIABLE { $$ = zend_ast_create(ZEND_AST_VAR, $1); }
1999-04-08 02:10:10 +08:00
;
internal_functions_in_yacc:
T_ISSET '(' isset_variables ')' { $$ = $3; }
| T_EMPTY '(' expr ')' { $$ = zend_ast_create(ZEND_AST_EMPTY, $3); }
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| T_INCLUDE expr
{ $$ = zend_ast_create_ex(ZEND_AST_INCLUDE_OR_EVAL, ZEND_INCLUDE, $2); }
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| T_INCLUDE_ONCE expr
{ $$ = zend_ast_create_ex(ZEND_AST_INCLUDE_OR_EVAL, ZEND_INCLUDE_ONCE, $2); }
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| T_EVAL '(' expr ')'
{ $$ = zend_ast_create_ex(ZEND_AST_INCLUDE_OR_EVAL, ZEND_EVAL, $3); }
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| T_REQUIRE expr
{ $$ = zend_ast_create_ex(ZEND_AST_INCLUDE_OR_EVAL, ZEND_REQUIRE, $2); }
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| T_REQUIRE_ONCE expr
{ $$ = zend_ast_create_ex(ZEND_AST_INCLUDE_OR_EVAL, ZEND_REQUIRE_ONCE, $2); }
1999-04-08 02:10:10 +08:00
;
isset_variables:
isset_variable { $$ = $1; }
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| isset_variables ',' isset_variable
{ $$ = zend_ast_create(ZEND_AST_AND, $1, $3); }
;
isset_variable:
expr { $$ = zend_ast_create(ZEND_AST_ISSET, $1); }
;
1999-04-08 02:10:10 +08:00
class_name_scalar:
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class_name T_PAAMAYIM_NEKUDOTAYIM T_CLASS
{ $$ = zend_ast_create(ZEND_AST_RESOLVE_CLASS_NAME, $1); }
;
1999-04-08 02:10:10 +08:00
%%
2011-06-24 07:00:53 +08:00
/* 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);
}
{
if (CG(parse_error) == 0) {
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char buffer[120];
const unsigned char *end, *str, *tok1 = NULL, *tok2 = NULL;
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unsigned int len = 0, toklen = 0, yystr_len;
2015-01-03 17:22:58 +08:00
2011-06-24 07:00:53 +08:00
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) {
2011-06-24 08:38:53 +08:00
yystpcpy(yyres, "end of file");
return sizeof("end of file")-1;
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}
2015-01-03 17:22:58 +08:00
2011-06-24 07:00:53 +08:00
str = LANG_SCNG(yy_text);
end = memchr(str, '\n', LANG_SCNG(yy_leng));
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yystr_len = (unsigned int)yystrlen(yystr);
2015-01-03 17:22:58 +08:00
2011-06-24 07:00:53 +08:00
if ((tok1 = memchr(yystr, '(', yystr_len)) != NULL
&& (tok2 = zend_memrchr(yystr, ')', yystr_len)) != NULL) {
toklen = (tok2 - tok1) + 1;
} else {
tok1 = tok2 = NULL;
toklen = 0;
}
2015-01-03 17:22:58 +08:00
2011-06-24 07:00:53 +08:00
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);
}
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yystpcpy(yyres, buffer);
return len + (toklen ? toklen + 1 : 0) + 2;
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}
}
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if (*yystr == '"') {
YYSIZE_T yyn = 0;
const char *yyp = yystr;
for (; *++yyp != '"'; ++yyn) {
yyres[yyn] = *yyp;
}
yyres[yyn] = '\0';
return yyn;
}
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yystpcpy(yyres, yystr);
return strlen(yystr);
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}
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* indent-tabs-mode: t
* End:
*/