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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: Bob Weinand <bwoebi@php.net> |
| Dmitry Stogov <dmitry@zend.com> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#ifndef ZEND_AST_H
#define ZEND_AST_H
#include "zend.h"
enum _zend_ast_kind {
/* first 256 kinds are reserved for opcodes */
ZEND_AST_ZVAL = 256,
ZEND_AST_ZNODE,
ZEND_AST_VAR,
ZEND_AST_DIM,
ZEND_AST_PROP,
ZEND_AST_STATIC_PROP,
ZEND_AST_CALL,
ZEND_AST_METHOD_CALL,
ZEND_AST_STATIC_CALL,
ZEND_AST_PARAMS,
ZEND_AST_UNPACK,
ZEND_AST_CONST,
ZEND_AST_CLASS_CONST,
ZEND_AST_RESOLVE_CLASS_NAME,
ZEND_AST_ASSIGN,
ZEND_AST_ASSIGN_REF,
ZEND_AST_ASSIGN_OP,
ZEND_AST_LIST,
ZEND_AST_UNARY_PLUS,
ZEND_AST_UNARY_MINUS,
ZEND_AST_CAST,
ZEND_AST_EMPTY,
ZEND_AST_ISSET,
ZEND_AST_SILENCE,
ZEND_AST_SHELL_EXEC,
ZEND_AST_BINARY_OP,
ZEND_AST_GREATER,
ZEND_AST_GREATER_EQUAL,
ZEND_AST_AND,
ZEND_AST_OR,
ZEND_AST_CONDITIONAL,
ZEND_AST_ARRAY,
ZEND_AST_ARRAY_ELEM,
ZEND_AST_ENCAPS_LIST,
ZEND_AST_EXPR_LIST,
ZEND_AST_STMT_LIST,
ZEND_AST_GLOBAL,
ZEND_AST_UNSET,
ZEND_AST_RETURN,
ZEND_AST_LABEL,
ZEND_AST_WHILE,
ZEND_AST_DO_WHILE,
ZEND_AST_FOR,
ZEND_AST_IF,
ZEND_AST_IF_ELEM,
};
typedef unsigned short zend_ast_kind;
typedef unsigned short zend_ast_attr;
struct _zend_ast {
zend_ast_kind kind; /* Type of the node (either opcode or ZEND_AST_* constant) */
zend_ast_attr attr; /* Additional attribute, use depending on node type */
zend_uint children; /* Number of children */
zend_ast *child[1]; /* Array of children (using struct hack) */
};
typedef struct _zend_ast_zval {
zend_ast_kind kind;
zend_ast_attr attr;
zval val;
} zend_ast_zval;
static inline zval *zend_ast_get_zval(zend_ast *ast) {
return &((zend_ast_zval *) ast)->val;
}
ZEND_API zend_ast *zend_ast_create_zval_ex(zval *zv, zend_ast_attr attr);
ZEND_API zend_ast *zend_ast_create_ex(
zend_uint children, zend_ast_kind kind, zend_ast_attr attr, ...);
ZEND_API zend_ast *zend_ast_create(
zend_uint children, zend_ast_kind kind, ...);
ZEND_API zend_ast *zend_ast_create_dynamic(zend_ast_kind kind);
ZEND_API zend_ast *zend_ast_dynamic_add(zend_ast *ast, zend_ast *op);
ZEND_API void zend_ast_dynamic_shrink(zend_ast **ast);
ZEND_API int zend_ast_is_ct_constant(zend_ast *ast);
ZEND_API void zend_ast_evaluate(zval *result, zend_ast *ast, zend_class_entry *scope TSRMLS_DC);
ZEND_API zend_ast *zend_ast_copy(zend_ast *ast);
ZEND_API void zend_ast_destroy(zend_ast *ast);
static inline zend_ast *zend_ast_create_zval(zval *zv) {
return zend_ast_create_zval_ex(zv, 0);
}
static inline zend_ast *zend_ast_create_unary(zend_ast_kind kind, zend_ast *op0) {
return zend_ast_create(1, kind, op0);
}
static inline zend_ast *zend_ast_create_binary(zend_ast_kind kind, zend_ast *op0, zend_ast *op1) {
return zend_ast_create(2, kind, op0, op1);
}
static inline zend_ast *zend_ast_create_ternary(
zend_ast_kind kind, zend_ast *op0, zend_ast *op1, zend_ast *op2
) {
return zend_ast_create(3, kind, op0, op1, op2);
}
static inline zend_ast *zend_ast_create_dynamic_and_add(zend_ast_kind kind, zend_ast *op) {
return zend_ast_dynamic_add(zend_ast_create_dynamic(kind), op);
}
static inline zend_ast *zend_ast_create_var(zval *name) {
return zend_ast_create_unary(ZEND_AST_VAR, zend_ast_create_zval(name));
}
static inline zend_ast *zend_ast_create_binary_op(zend_uint opcode, zend_ast *op0, zend_ast *op1) {
return zend_ast_create_ex(2, ZEND_AST_BINARY_OP, opcode, op0, op1);
}
static inline zend_ast *zend_ast_create_assign_op(zend_uint opcode, zend_ast *op0, zend_ast *op1) {
return zend_ast_create_ex(2, ZEND_AST_ASSIGN_OP, opcode, op0, op1);
}
static inline zend_ast *zend_ast_create_cast(zend_uint type, zend_ast *op0) {
return zend_ast_create_ex(1, ZEND_AST_CAST, type, op0);
}
/* Temporary, for porting */
#define AST_COMPILE(res, ast) do { \
zend_ast *_ast = (ast); \
zend_eval_const_expr(&_ast TSRMLS_CC); \
zend_compile_expr((res), _ast TSRMLS_CC); \
zend_ast_destroy(_ast); \
} while (0)
#define AST_COMPILE_VAR(res, ast, type) do { \
zend_ast *_ast = (ast); \
zend_compile_var((res), _ast, type TSRMLS_CC); \
zend_ast_destroy(_ast); \
} while (0)
#define AST_COMPILE_STMT(ast) do { \
zend_ast *_ast = (ast); \
zend_compile_stmt(_ast TSRMLS_CC); \
if (_ast) zend_ast_destroy(_ast); \
} while (0)
#define AST_ZNODE(znode) zend_ast_create_znode((znode))
#define AST_ZVAL(znode) zend_ast_create_zval(&(znode)->u.constant)
#define AC(znode) AST_COMPILE(&znode, znode.u.ast)
#define AS(znode) AST_COMPILE_STMT(znode.u.ast)
#define AZ(znode) ((znode).u.ast = AST_ZNODE(&znode))
#define AN(znode) ((znode).u.ast = NULL)
#endif
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