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zend_ast.h
/* +----------------------------------------------------------------------+ | Zend Engine | +----------------------------------------------------------------------+ | Copyright (c) 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@php.net> | | Nikita Popov <nikic@php.net> | +----------------------------------------------------------------------+ */ #ifndef ZEND_AST_H #define ZEND_AST_H #include "zend_types.h" #ifndef ZEND_AST_SPEC # define ZEND_AST_SPEC 1 #endif #define ZEND_AST_SPECIAL_SHIFT 6 #define ZEND_AST_IS_LIST_SHIFT 7 #define ZEND_AST_NUM_CHILDREN_SHIFT 8 enum _zend_ast_kind { /* special nodes */ ZEND_AST_ZVAL = 1 << ZEND_AST_SPECIAL_SHIFT, ZEND_AST_CONSTANT, ZEND_AST_ZNODE, /* declaration nodes */ ZEND_AST_FUNC_DECL, ZEND_AST_CLOSURE, ZEND_AST_METHOD, ZEND_AST_CLASS, ZEND_AST_ARROW_FUNC, ZEND_AST_PROPERTY_HOOK, /* list nodes */ ZEND_AST_ARG_LIST = 1 << ZEND_AST_IS_LIST_SHIFT, ZEND_AST_ARRAY, ZEND_AST_ENCAPS_LIST, ZEND_AST_EXPR_LIST, ZEND_AST_STMT_LIST, ZEND_AST_IF, ZEND_AST_SWITCH_LIST, ZEND_AST_CATCH_LIST, ZEND_AST_PARAM_LIST, ZEND_AST_CLOSURE_USES, ZEND_AST_PROP_DECL, ZEND_AST_CONST_DECL, ZEND_AST_CLASS_CONST_DECL, ZEND_AST_NAME_LIST, ZEND_AST_TRAIT_ADAPTATIONS, ZEND_AST_USE, ZEND_AST_TYPE_UNION, ZEND_AST_TYPE_INTERSECTION, ZEND_AST_ATTRIBUTE_LIST, ZEND_AST_ATTRIBUTE_GROUP, ZEND_AST_MATCH_ARM_LIST, ZEND_AST_MODIFIER_LIST, /* 0 child nodes */ ZEND_AST_MAGIC_CONST = 0 << ZEND_AST_NUM_CHILDREN_SHIFT, ZEND_AST_TYPE, ZEND_AST_CONSTANT_CLASS, ZEND_AST_CALLABLE_CONVERT, /* 1 child node */ ZEND_AST_VAR = 1 << ZEND_AST_NUM_CHILDREN_SHIFT, ZEND_AST_CONST, ZEND_AST_UNPACK, 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_CLONE, ZEND_AST_EXIT, ZEND_AST_PRINT, ZEND_AST_INCLUDE_OR_EVAL, ZEND_AST_UNARY_OP, ZEND_AST_PRE_INC, ZEND_AST_PRE_DEC, ZEND_AST_POST_INC, ZEND_AST_POST_DEC, ZEND_AST_YIELD_FROM, ZEND_AST_CLASS_NAME, ZEND_AST_GLOBAL, ZEND_AST_UNSET, ZEND_AST_RETURN, ZEND_AST_LABEL, ZEND_AST_REF, ZEND_AST_HALT_COMPILER, ZEND_AST_ECHO, ZEND_AST_THROW, ZEND_AST_GOTO, ZEND_AST_BREAK, ZEND_AST_CONTINUE, ZEND_AST_PROPERTY_HOOK_SHORT_BODY, /* 2 child nodes */ ZEND_AST_DIM = 2 << ZEND_AST_NUM_CHILDREN_SHIFT, ZEND_AST_PROP, ZEND_AST_NULLSAFE_PROP, ZEND_AST_STATIC_PROP, ZEND_AST_CALL, ZEND_AST_CLASS_CONST, ZEND_AST_ASSIGN, ZEND_AST_ASSIGN_REF, ZEND_AST_ASSIGN_OP, ZEND_AST_BINARY_OP, ZEND_AST_GREATER, ZEND_AST_GREATER_EQUAL, ZEND_AST_AND, ZEND_AST_OR, ZEND_AST_ARRAY_ELEM, ZEND_AST_NEW, ZEND_AST_INSTANCEOF, ZEND_AST_YIELD, ZEND_AST_COALESCE, ZEND_AST_ASSIGN_COALESCE, ZEND_AST_STATIC, ZEND_AST_WHILE, ZEND_AST_DO_WHILE, ZEND_AST_IF_ELEM, ZEND_AST_SWITCH, ZEND_AST_SWITCH_CASE, ZEND_AST_DECLARE, ZEND_AST_USE_TRAIT, ZEND_AST_TRAIT_PRECEDENCE, ZEND_AST_METHOD_REFERENCE, ZEND_AST_NAMESPACE, ZEND_AST_USE_ELEM, ZEND_AST_TRAIT_ALIAS, ZEND_AST_GROUP_USE, ZEND_AST_ATTRIBUTE, ZEND_AST_MATCH, ZEND_AST_MATCH_ARM, ZEND_AST_NAMED_ARG, ZEND_AST_PARENT_PROPERTY_HOOK_CALL, /* 3 child nodes */ ZEND_AST_METHOD_CALL = 3 << ZEND_AST_NUM_CHILDREN_SHIFT, ZEND_AST_NULLSAFE_METHOD_CALL, ZEND_AST_STATIC_CALL, ZEND_AST_CONDITIONAL, ZEND_AST_TRY, ZEND_AST_CATCH, ZEND_AST_PROP_GROUP, ZEND_AST_CONST_ELEM, ZEND_AST_CLASS_CONST_GROUP, // Pseudo node for initializing enums ZEND_AST_CONST_ENUM_INIT, /* 4 child nodes */ ZEND_AST_FOR = 4 << ZEND_AST_NUM_CHILDREN_SHIFT, ZEND_AST_FOREACH, ZEND_AST_ENUM_CASE, ZEND_AST_PROP_ELEM, /* 5 child nodes */ /* 6 child nodes */ ZEND_AST_PARAM = 6 << ZEND_AST_NUM_CHILDREN_SHIFT, }; typedef uint16_t zend_ast_kind; typedef uint16_t zend_ast_attr; struct _zend_ast { zend_ast_kind kind; /* Type of the node (ZEND_AST_* enum constant) */ zend_ast_attr attr; /* Additional attribute, use depending on node type */ uint32_t lineno; /* Line number */ zend_ast *child[1]; /* Array of children (using struct hack) */ }; /* Same as zend_ast, but with children count, which is updated dynamically */ typedef struct _zend_ast_list { zend_ast_kind kind; zend_ast_attr attr; uint32_t lineno; uint32_t children; zend_ast *child[1]; } zend_ast_list; /* Lineno is stored in val.u2.lineno */ typedef struct _zend_ast_zval { zend_ast_kind kind; zend_ast_attr attr; zval val; } zend_ast_zval; /* Separate structure for function and class declaration, as they need extra information. */ typedef struct _zend_ast_decl { zend_ast_kind kind; zend_ast_attr attr; /* Unused - for structure compatibility */ uint32_t start_lineno; uint32_t end_lineno; uint32_t flags; zend_string *doc_comment; zend_string *name; zend_ast *child[5]; } zend_ast_decl; typedef void (*zend_ast_process_t)(zend_ast *ast); extern ZEND_API zend_ast_process_t zend_ast_process; ZEND_API zend_ast * ZEND_FASTCALL zend_ast_create_zval_with_lineno(zval *zv, uint32_t lineno); ZEND_API zend_ast * ZEND_FASTCALL zend_ast_create_zval_ex(zval *zv, zend_ast_attr attr); ZEND_API zend_ast * ZEND_FASTCALL zend_ast_create_zval(zval *zv); ZEND_API zend_ast * ZEND_FASTCALL zend_ast_create_zval_from_str(zend_string *str); ZEND_API zend_ast * ZEND_FASTCALL zend_ast_create_zval_from_long(zend_long lval); ZEND_API zend_ast * ZEND_FASTCALL zend_ast_create_constant(zend_string *name, zend_ast_attr attr); ZEND_API zend_ast * ZEND_FASTCALL zend_ast_create_class_const_or_name(zend_ast *class_name, zend_ast *name); #if ZEND_AST_SPEC # define ZEND_AST_SPEC_CALL(name, ...) \ ZEND_EXPAND_VA(ZEND_AST_SPEC_CALL_(name, __VA_ARGS__, _n, _5, _4, _3, _2, _1, _0)(__VA_ARGS__)) # define ZEND_AST_SPEC_CALL_(name, _, _6, _5, _4, _3, _2, _1, suffix, ...) \ name ## suffix # define ZEND_AST_SPEC_CALL_EX(name, ...) \ ZEND_EXPAND_VA(ZEND_AST_SPEC_CALL_EX_(name, __VA_ARGS__, _n, _5, _4, _3, _2, _1, _0)(__VA_ARGS__)) # define ZEND_AST_SPEC_CALL_EX_(name, _, _7, _6, _5, _4, _3, _2, _1, suffix, ...) \ name ## suffix ZEND_API zend_ast * ZEND_FASTCALL zend_ast_create_0(zend_ast_kind kind); ZEND_API zend_ast * ZEND_FASTCALL zend_ast_create_1(zend_ast_kind kind, zend_ast *child); ZEND_API zend_ast * ZEND_FASTCALL zend_ast_create_2(zend_ast_kind kind, zend_ast *child1, zend_ast *child2); ZEND_API zend_ast * ZEND_FASTCALL zend_ast_create_3(zend_ast_kind kind, zend_ast *child1, zend_ast *child2, zend_ast *child3); ZEND_API zend_ast * ZEND_FASTCALL zend_ast_create_4(zend_ast_kind kind, zend_ast *child1, zend_ast *child2, zend_ast *child3, zend_ast *child4); ZEND_API zend_ast * ZEND_FASTCALL zend_ast_create_5(zend_ast_kind kind, zend_ast *child1, zend_ast *child2, zend_ast *child3, zend_ast *child4, zend_ast *child5); ZEND_API zend_ast * ZEND_FASTCALL zend_ast_create_va(zend_ast_kind kind, zend_ast_attr attr, va_list *va); /* Need to use unsigned args to avoid va promotion UB. */ ZEND_API zend_ast * zend_ast_create_n(unsigned kind, ...); ZEND_API zend_ast * zend_ast_create_ex_n(zend_ast_kind kind, unsigned attr, ...); static zend_always_inline zend_ast * zend_ast_create_ex_0(zend_ast_kind kind, zend_ast_attr attr) { zend_ast *ast = zend_ast_create_0(kind); ast->attr = attr; return ast; } static zend_always_inline zend_ast * zend_ast_create_ex_1(zend_ast_kind kind, zend_ast_attr attr, zend_ast *child) { zend_ast *ast = zend_ast_create_1(kind, child); ast->attr = attr; return ast; } static zend_always_inline zend_ast * zend_ast_create_ex_2(zend_ast_kind kind, zend_ast_attr attr, zend_ast *child1, zend_ast *child2) { zend_ast *ast = zend_ast_create_2(kind, child1, child2); ast->attr = attr; return ast; } static zend_always_inline zend_ast * zend_ast_create_ex_3(zend_ast_kind kind, zend_ast_attr attr, zend_ast *child1, zend_ast *child2, zend_ast *child3) { zend_ast *ast = zend_ast_create_3(kind, child1, child2, child3); ast->attr = attr; return ast; } static zend_always_inline zend_ast * zend_ast_create_ex_4(zend_ast_kind kind, zend_ast_attr attr, zend_ast *child1, zend_ast *child2, zend_ast *child3, zend_ast *child4) { zend_ast *ast = zend_ast_create_4(kind, child1, child2, child3, child4); ast->attr = attr; return ast; } static zend_always_inline zend_ast * zend_ast_create_ex_5(zend_ast_kind kind, zend_ast_attr attr, zend_ast *child1, zend_ast *child2, zend_ast *child3, zend_ast *child4, zend_ast *child5) { zend_ast *ast = zend_ast_create_5(kind, child1, child2, child3, child4, child5); ast->attr = attr; return ast; } ZEND_API zend_ast * ZEND_FASTCALL zend_ast_create_list_0(zend_ast_kind kind); ZEND_API zend_ast * ZEND_FASTCALL zend_ast_create_list_1(zend_ast_kind kind, zend_ast *child); ZEND_API zend_ast * ZEND_FASTCALL zend_ast_create_list_2(zend_ast_kind kind, zend_ast *child1, zend_ast *child2); # define zend_ast_create(...) \ ZEND_AST_SPEC_CALL(zend_ast_create, __VA_ARGS__) # define zend_ast_create_ex(...) \ ZEND_AST_SPEC_CALL_EX(zend_ast_create_ex, __VA_ARGS__) # define zend_ast_create_list(init_children, ...) \ ZEND_AST_SPEC_CALL(zend_ast_create_list, __VA_ARGS__) #else ZEND_API zend_ast *zend_ast_create(zend_ast_kind kind, ...); ZEND_API zend_ast *zend_ast_create_ex(zend_ast_kind kind, zend_ast_attr attr, ...); ZEND_API zend_ast *zend_ast_create_list(uint32_t init_children, zend_ast_kind kind, ...); #endif ZEND_API zend_ast * ZEND_FASTCALL zend_ast_list_add(zend_ast *list, zend_ast *op); ZEND_API zend_ast *zend_ast_create_decl( zend_ast_kind kind, uint32_t flags, uint32_t start_lineno, zend_string *doc_comment, zend_string *name, zend_ast *child0, zend_ast *child1, zend_ast *child2, zend_ast *child3, zend_ast *child4 ); typedef struct { bool had_side_effects; } zend_ast_evaluate_ctx; ZEND_API zend_result ZEND_FASTCALL zend_ast_evaluate(zval *result, zend_ast *ast, zend_class_entry *scope); ZEND_API zend_result ZEND_FASTCALL zend_ast_evaluate_ex(zval *result, zend_ast *ast, zend_class_entry *scope, bool *short_circuited_ptr, zend_ast_evaluate_ctx *ctx); ZEND_API zend_string *zend_ast_export(const char *prefix, zend_ast *ast, const char *suffix); ZEND_API zend_ast_ref * ZEND_FASTCALL zend_ast_copy(zend_ast *ast); ZEND_API void ZEND_FASTCALL zend_ast_destroy(zend_ast *ast); ZEND_API void ZEND_FASTCALL zend_ast_ref_destroy(zend_ast_ref *ast); typedef void (*zend_ast_apply_func)(zend_ast **ast_ptr, void *context); ZEND_API void zend_ast_apply(zend_ast *ast, zend_ast_apply_func fn, void *context); static zend_always_inline size_t zend_ast_size(uint32_t children) { return XtOffsetOf(zend_ast, child) + (sizeof(zend_ast *) * children); } static zend_always_inline bool zend_ast_is_special(zend_ast *ast) { return (ast->kind >> ZEND_AST_SPECIAL_SHIFT) & 1; } static zend_always_inline bool zend_ast_is_list(zend_ast *ast) { return (ast->kind >> ZEND_AST_IS_LIST_SHIFT) & 1; } static zend_always_inline zend_ast_list *zend_ast_get_list(zend_ast *ast) { ZEND_ASSERT(zend_ast_is_list(ast)); return (zend_ast_list *) ast; } static zend_always_inline zval *zend_ast_get_zval(zend_ast *ast) { ZEND_ASSERT(ast->kind == ZEND_AST_ZVAL); return &((zend_ast_zval *) ast)->val; } static zend_always_inline zend_string *zend_ast_get_str(zend_ast *ast) { zval *zv = zend_ast_get_zval(ast); ZEND_ASSERT(Z_TYPE_P(zv) == IS_STRING); return Z_STR_P(zv); } static zend_always_inline zend_string *zend_ast_get_constant_name(zend_ast *ast) { ZEND_ASSERT(ast->kind == ZEND_AST_CONSTANT); ZEND_ASSERT(Z_TYPE(((zend_ast_zval *) ast)->val) == IS_STRING); return Z_STR(((zend_ast_zval *) ast)->val); } static zend_always_inline uint32_t zend_ast_get_num_children(zend_ast *ast) { ZEND_ASSERT(!zend_ast_is_list(ast)); return ast->kind >> ZEND_AST_NUM_CHILDREN_SHIFT; } static zend_always_inline uint32_t zend_ast_get_lineno(zend_ast *ast) { if (ast->kind == ZEND_AST_ZVAL) { zval *zv = zend_ast_get_zval(ast); return Z_LINENO_P(zv); } else if (ast->kind == ZEND_AST_CONSTANT) { zval *zv = &((zend_ast_zval *) ast)->val; return Z_LINENO_P(zv); } else { return ast->lineno; } } static zend_always_inline zend_ast *zend_ast_create_binary_op(uint32_t opcode, zend_ast *op0, zend_ast *op1) { return zend_ast_create_ex(ZEND_AST_BINARY_OP, opcode, op0, op1); } zend_ast *zend_ast_create_concat_op(zend_ast *op0, zend_ast *op1); static zend_always_inline zend_ast *zend_ast_create_assign_op(uint32_t opcode, zend_ast *op0, zend_ast *op1) { return zend_ast_create_ex(ZEND_AST_ASSIGN_OP, opcode, op0, op1); } static zend_always_inline zend_ast *zend_ast_create_cast(uint32_t type, zend_ast *op0) { return zend_ast_create_ex(ZEND_AST_CAST, type, op0); } static zend_always_inline zend_ast *zend_ast_list_rtrim(zend_ast *ast) { zend_ast_list *list = zend_ast_get_list(ast); if (list->children && list->child[list->children - 1] == NULL) { list->children--; } return ast; } zend_ast * ZEND_FASTCALL zend_ast_with_attributes(zend_ast *ast, zend_ast *attr); #endif
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