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zend_compile.h
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/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 1998-2018 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 |
| [email protected] so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andi Gutmans <[email protected]> |
| Zeev Suraski <[email protected]> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#ifndef ZEND_COMPILE_H
#define ZEND_COMPILE_H
#include "zend.h"
#include "zend_ast.h"
#ifdef HAVE_STDARG_H
# include <stdarg.h>
#endif
#include "zend_llist.h"
#define SET_UNUSED(op) op ## _type = IS_UNUSED
#define MAKE_NOP(opline) do { \
(opline)->op1.num = 0; \
(opline)->op2.num = 0; \
(opline)->result.num = 0; \
(opline)->opcode = ZEND_NOP; \
(opline)->op1_type = IS_UNUSED; \
(opline)->op2_type = IS_UNUSED; \
(opline)->result_type = IS_UNUSED; \
} while (0)
#define RESET_DOC_COMMENT() do { \
if (CG(doc_comment)) { \
zend_string_release(CG(doc_comment)); \
CG(doc_comment) = NULL; \
} \
} while (0)
typedef struct _zend_op_array zend_op_array;
typedef struct _zend_op zend_op;
/* On 64-bit systems less optimal, but more compact VM code leads to better
* performance. So on 32-bit systems we use absolute addresses for jump
* targets and constants, but on 64-bit systems realtive 32-bit offsets */
#if SIZEOF_SIZE_T == 4
# define ZEND_USE_ABS_JMP_ADDR 1
# define ZEND_USE_ABS_CONST_ADDR 1
# define ZEND_EX_USE_LITERALS 0
# define ZEND_EX_USE_RUN_TIME_CACHE 1
#else
# define ZEND_USE_ABS_JMP_ADDR 0
# define ZEND_USE_ABS_CONST_ADDR 0
# define ZEND_EX_USE_LITERALS 1
# define ZEND_EX_USE_RUN_TIME_CACHE 1
#endif
typedef union _znode_op {
uint32_t constant;
uint32_t var;
uint32_t num;
uint32_t opline_num; /* Needs to be signed */
#if ZEND_USE_ABS_JMP_ADDR
zend_op *jmp_addr;
#else
uint32_t jmp_offset;
#endif
#if ZEND_USE_ABS_CONST_ADDR
zval *zv;
#endif
} znode_op;
typedef struct _znode { /* used only during compilation */
zend_uchar op_type;
zend_uchar flag;
union {
znode_op op;
zval constant; /* replaced by literal/zv */
} u;
} znode;
/* Temporarily defined here, to avoid header ordering issues */
typedef struct _zend_ast_znode {
zend_ast_kind kind;
zend_ast_attr attr;
uint32_t lineno;
znode node;
} zend_ast_znode;
ZEND_API zend_ast *zend_ast_create_znode(znode *node);
static zend_always_inline znode *zend_ast_get_znode(zend_ast *ast) {
return &((zend_ast_znode *) ast)->node;
}
typedef struct _zend_declarables {
zend_long ticks;
} zend_declarables;
/* Compilation context that is different for each file, but shared between op arrays. */
typedef struct _zend_file_context {
zend_declarables declarables;
znode implementing_class;
zend_string *current_namespace;
zend_bool in_namespace;
zend_bool has_bracketed_namespaces;
HashTable *imports;
HashTable *imports_function;
HashTable *imports_const;
HashTable seen_symbols;
} zend_file_context;
typedef union _zend_parser_stack_elem {
zend_ast *ast;
zend_string *str;
zend_ulong num;
} zend_parser_stack_elem;
void zend_compile_top_stmt(zend_ast *ast);
void zend_compile_stmt(zend_ast *ast);
void zend_compile_expr(znode *node, zend_ast *ast);
void zend_compile_var(znode *node, zend_ast *ast, uint32_t type);
void zend_eval_const_expr(zend_ast **ast_ptr);
void zend_const_expr_to_zval(zval *result, zend_ast *ast);
typedef int (*user_opcode_handler_t) (zend_execute_data *execute_data);
struct _zend_op {
const void *handler;
znode_op op1;
znode_op op2;
znode_op result;
uint32_t extended_value;
uint32_t lineno;
zend_uchar opcode;
zend_uchar op1_type;
zend_uchar op2_type;
zend_uchar result_type;
};
typedef struct _zend_brk_cont_element {
int start;
int cont;
int brk;
int parent;
} zend_brk_cont_element;
typedef struct _zend_label {
int brk_cont;
uint32_t opline_num;
} zend_label;
typedef struct _zend_try_catch_element {
uint32_t try_op;
uint32_t catch_op; /* ketchup! */
uint32_t finally_op;
uint32_t finally_end;
} zend_try_catch_element;
#define ZEND_LIVE_TMPVAR 0
#define ZEND_LIVE_LOOP 1
#define ZEND_LIVE_SILENCE 2
#define ZEND_LIVE_ROPE 3
#define ZEND_LIVE_MASK 3
typedef struct _zend_live_range {
uint32_t var; /* low bits are used for variable type (ZEND_LIVE_* macros) */
uint32_t start;
uint32_t end;
} zend_live_range;
/* Compilation context that is different for each op array. */
typedef struct _zend_oparray_context {
uint32_t opcodes_size;
int vars_size;
int literals_size;
int backpatch_count;
uint32_t fast_call_var;
uint32_t try_catch_offset;
int current_brk_cont;
int last_brk_cont;
zend_brk_cont_element *brk_cont_array;
HashTable *labels;
} zend_oparray_context;
/*
* Function and method flags
*
* Free flags:
* 0x10
* 0x20
* 0x8000
* 0x2000000
*/
/* method flags (types) */
#define ZEND_ACC_STATIC 0x01
#define ZEND_ACC_ABSTRACT 0x02
#define ZEND_ACC_FINAL 0x04
#define ZEND_ACC_IMPLEMENTED_ABSTRACT 0x08
/* method flags (visibility) */
/* The order of those must be kept - public < protected < private */
#define ZEND_ACC_PUBLIC 0x100
#define ZEND_ACC_PROTECTED 0x200
#define ZEND_ACC_PRIVATE 0x400
#define ZEND_ACC_PPP_MASK (ZEND_ACC_PUBLIC | ZEND_ACC_PROTECTED | ZEND_ACC_PRIVATE)
#define ZEND_ACC_CHANGED 0x800
#define ZEND_ACC_IMPLICIT_PUBLIC 0x1000
/* method flags (special method detection) */
#define ZEND_ACC_CTOR 0x2000
#define ZEND_ACC_DTOR 0x4000
/* method flag used by Closure::__invoke() */
#define ZEND_ACC_USER_ARG_INFO 0x80
/* method flag (bc only), any method that has this flag can be used statically and non statically. */
#define ZEND_ACC_ALLOW_STATIC 0x10000
/* shadow of parent's private method/property */
#define ZEND_ACC_SHADOW 0x20000
/* deprecation flag */
#define ZEND_ACC_DEPRECATED 0x40000
#define ZEND_ACC_CLOSURE 0x100000
#define ZEND_ACC_FAKE_CLOSURE 0x40
#define ZEND_ACC_GENERATOR 0x800000
#define ZEND_ACC_NO_RT_ARENA 0x80000
/* call through user function trampoline. e.g. __call, __callstatic */
#define ZEND_ACC_CALL_VIA_TRAMPOLINE 0x200000
/* call through internal function handler. e.g. Closure::invoke() */
#define ZEND_ACC_CALL_VIA_HANDLER ZEND_ACC_CALL_VIA_TRAMPOLINE
/* disable inline caching */
#define ZEND_ACC_NEVER_CACHE 0x400000
#define ZEND_ACC_VARIADIC 0x1000000
#define ZEND_ACC_RETURN_REFERENCE 0x4000000
#define ZEND_ACC_DONE_PASS_TWO 0x8000000
/* class has magic methods __get/__set/__unset/__isset that use guards */
#define ZEND_ACC_USE_GUARDS 0x1000000
/* function has typed arguments */
#define ZEND_ACC_HAS_TYPE_HINTS 0x10000000
/* op_array has finally blocks */
#define ZEND_ACC_HAS_FINALLY_BLOCK 0x20000000
/* internal function is allocated at arena */
#define ZEND_ACC_ARENA_ALLOCATED 0x20000000
/* Function has a return type (or class has such non-private function) */
#define ZEND_ACC_HAS_RETURN_TYPE 0x40000000
/* op_array uses strict mode types */
#define ZEND_ACC_STRICT_TYPES 0x80000000
/*
* Class flags
*
* Classes also use the ZEND_ACC_FINAL (0x04) flag, otherwise there is no overlap.
*/
/* class flags (types) */
/* ZEND_ACC_IMPLICIT_ABSTRACT_CLASS is used for abstract classes (since it is set by any abstract method even interfaces MAY have it set, too). */
/* ZEND_ACC_EXPLICIT_ABSTRACT_CLASS denotes that a class was explicitly defined as abstract by using the keyword. */
#define ZEND_ACC_IMPLICIT_ABSTRACT_CLASS 0x10
#define ZEND_ACC_EXPLICIT_ABSTRACT_CLASS 0x20
#define ZEND_ACC_INTERFACE 0x40
#define ZEND_ACC_TRAIT 0x80
#define ZEND_ACC_ANON_CLASS 0x100
#define ZEND_ACC_ANON_BOUND 0x200
#define ZEND_ACC_INHERITED 0x400
/* class implement interface(s) flag */
#define ZEND_ACC_IMPLEMENT_INTERFACES 0x80000
#define ZEND_ACC_IMPLEMENT_TRAITS 0x400000
/* class constants updated */
#define ZEND_ACC_CONSTANTS_UPDATED 0x100000
/* user class has methods with static variables */
#define ZEND_HAS_STATIC_IN_METHODS 0x800000
char *zend_visibility_string(uint32_t fn_flags);
typedef struct _zend_property_info {
uint32_t offset; /* property offset for object properties or
property index for static properties */
uint32_t flags;
zend_string *name;
zend_string *doc_comment;
zend_class_entry *ce;
} zend_property_info;
#define OBJ_PROP(obj, offset) \
((zval*)((char*)(obj) + offset))
#define OBJ_PROP_NUM(obj, num) \
(&(obj)->properties_table[(num)])
#define OBJ_PROP_TO_OFFSET(num) \
((uint32_t)(zend_uintptr_t)OBJ_PROP_NUM(((zend_object*)NULL), num))
#define OBJ_PROP_TO_NUM(offset) \
((offset - OBJ_PROP_TO_OFFSET(0)) / sizeof(zval))
typedef struct _zend_class_constant {
zval value; /* access flags are stored in reserved: zval.u2.access_flags */
zend_string *doc_comment;
zend_class_entry *ce;
} zend_class_constant;
/* arg_info for internal functions */
typedef struct _zend_internal_arg_info {
const char *name;
zend_type type;
zend_uchar pass_by_reference;
zend_bool is_variadic;
} zend_internal_arg_info;
/* arg_info for user functions */
typedef struct _zend_arg_info {
zend_string *name;
zend_type type;
zend_uchar pass_by_reference;
zend_bool is_variadic;
} zend_arg_info;
/* the following structure repeats the layout of zend_internal_arg_info,
* but its fields have different meaning. It's used as the first element of
* arg_info array to define properties of internal functions.
* It's also used for the return type.
*/
typedef struct _zend_internal_function_info {
zend_uintptr_t required_num_args;
zend_type type;
zend_bool return_reference;
zend_bool _is_variadic;
} zend_internal_function_info;
struct _zend_op_array {
/* Common elements */
zend_uchar type;
zend_uchar arg_flags[3]; /* bitset of arg_info.pass_by_reference */
uint32_t fn_flags;
zend_string *function_name;
zend_class_entry *scope;
zend_function *prototype;
uint32_t num_args;
uint32_t required_num_args;
zend_arg_info *arg_info;
/* END of common elements */
uint32_t *refcount;
uint32_t last;
zend_op *opcodes;
int last_var;
uint32_t T;
zend_string **vars;
int last_live_range;
int last_try_catch;
zend_live_range *live_range;
zend_try_catch_element *try_catch_array;
/* static variables support */
HashTable *static_variables;
zend_string *filename;
uint32_t line_start;
uint32_t line_end;
zend_string *doc_comment;
uint32_t early_binding; /* the linked list of delayed declarations */
int last_literal;
zval *literals;
int cache_size;
void **run_time_cache;
void *reserved[ZEND_MAX_RESERVED_RESOURCES];
};
#define ZEND_RETURN_VALUE 0
#define ZEND_RETURN_REFERENCE 1
/* zend_internal_function_handler */
typedef void (*zif_handler)(INTERNAL_FUNCTION_PARAMETERS);
typedef struct _zend_internal_function {
/* Common elements */
zend_uchar type;
zend_uchar arg_flags[3]; /* bitset of arg_info.pass_by_reference */
uint32_t fn_flags;
zend_string* function_name;
zend_class_entry *scope;
zend_function *prototype;
uint32_t num_args;
uint32_t required_num_args;
zend_internal_arg_info *arg_info;
/* END of common elements */
zif_handler handler;
struct _zend_module_entry *module;
void *reserved[ZEND_MAX_RESERVED_RESOURCES];
} zend_internal_function;
#define ZEND_FN_SCOPE_NAME(function) ((function) && (function)->common.scope ? ZSTR_VAL((function)->common.scope->name) : "")
union _zend_function {
zend_uchar type; /* MUST be the first element of this struct! */
uint32_t quick_arg_flags;
struct {
zend_uchar type; /* never used */
zend_uchar arg_flags[3]; /* bitset of arg_info.pass_by_reference */
uint32_t fn_flags;
zend_string *function_name;
zend_class_entry *scope;
union _zend_function *prototype;
uint32_t num_args;
uint32_t required_num_args;
zend_arg_info *arg_info;
} common;
zend_op_array op_array;
zend_internal_function internal_function;
};
typedef enum _zend_call_kind {
ZEND_CALL_NESTED_FUNCTION, /* stackless VM call to function */
ZEND_CALL_NESTED_CODE, /* stackless VM call to include/require/eval */
ZEND_CALL_TOP_FUNCTION, /* direct VM call to function from external C code */
ZEND_CALL_TOP_CODE /* direct VM call to "main" code from external C code */
} zend_call_kind;
struct _zend_execute_data {
const zend_op *opline; /* executed opline */
zend_execute_data *call; /* current call */
zval *return_value;
zend_function *func; /* executed function */
zval This; /* this + call_info + num_args */
zend_execute_data *prev_execute_data;
zend_array *symbol_table;
#if ZEND_EX_USE_RUN_TIME_CACHE
void **run_time_cache; /* cache op_array->run_time_cache */
#endif
#if ZEND_EX_USE_LITERALS
zval *literals; /* cache op_array->literals */
#endif
};
#define ZEND_CALL_FUNCTION (0 << 0)
#define ZEND_CALL_CODE (1 << 0)
#define ZEND_CALL_NESTED (0 << 1)
#define ZEND_CALL_TOP (1 << 1)
#define ZEND_CALL_FREE_EXTRA_ARGS (1 << 2) /* equal to IS_TYPE_REFCOUNTED */
#define ZEND_CALL_CTOR (1 << 3)
#define ZEND_CALL_HAS_SYMBOL_TABLE (1 << 4)
#define ZEND_CALL_CLOSURE (1 << 5)
#define ZEND_CALL_RELEASE_THIS (1 << 6)
#define ZEND_CALL_ALLOCATED (1 << 7)
#define ZEND_CALL_GENERATOR (1 << 8)
#define ZEND_CALL_DYNAMIC (1 << 9)
#define ZEND_CALL_FAKE_CLOSURE (1 << 10)
#define ZEND_CALL_INFO_SHIFT 16
#define ZEND_CALL_INFO(call) \
(Z_TYPE_INFO((call)->This) >> ZEND_CALL_INFO_SHIFT)
#define ZEND_CALL_KIND_EX(call_info) \
(call_info & (ZEND_CALL_CODE | ZEND_CALL_TOP))
#define ZEND_CALL_KIND(call) \
ZEND_CALL_KIND_EX(ZEND_CALL_INFO(call))
#define ZEND_SET_CALL_INFO(call, object, info) do { \
Z_TYPE_INFO((call)->This) = ((object) ? IS_OBJECT_EX : IS_UNDEF) | ((info) << ZEND_CALL_INFO_SHIFT); \
} while (0)
#define ZEND_ADD_CALL_FLAG_EX(call_info, flag) do { \
call_info |= ((flag) << ZEND_CALL_INFO_SHIFT); \
} while (0)
#define ZEND_ADD_CALL_FLAG(call, flag) do { \
ZEND_ADD_CALL_FLAG_EX(Z_TYPE_INFO((call)->This), flag); \
} while (0)
#define ZEND_CALL_NUM_ARGS(call) \
(call)->This.u2.num_args
#define ZEND_CALL_FRAME_SLOT \
((int)((ZEND_MM_ALIGNED_SIZE(sizeof(zend_execute_data)) + ZEND_MM_ALIGNED_SIZE(sizeof(zval)) - 1) / ZEND_MM_ALIGNED_SIZE(sizeof(zval))))
#define ZEND_CALL_VAR(call, n) \
((zval*)(((char*)(call)) + ((int)(n))))
#define ZEND_CALL_VAR_NUM(call, n) \
(((zval*)(call)) + (ZEND_CALL_FRAME_SLOT + ((int)(n))))
#define ZEND_CALL_ARG(call, n) \
ZEND_CALL_VAR_NUM(call, ((int)(n)) - 1)
#define EX(element) ((execute_data)->element)
#define EX_CALL_INFO() ZEND_CALL_INFO(execute_data)
#define EX_CALL_KIND() ZEND_CALL_KIND(execute_data)
#define EX_NUM_ARGS() ZEND_CALL_NUM_ARGS(execute_data)
#define ZEND_CALL_USES_STRICT_TYPES(call) \
(((call)->func->common.fn_flags & ZEND_ACC_STRICT_TYPES) != 0)
#define EX_USES_STRICT_TYPES() \
ZEND_CALL_USES_STRICT_TYPES(execute_data)
#define ZEND_ARG_USES_STRICT_TYPES() \
(EG(current_execute_data)->prev_execute_data && \
EG(current_execute_data)->prev_execute_data->func && \
ZEND_CALL_USES_STRICT_TYPES(EG(current_execute_data)->prev_execute_data))
#define ZEND_RET_USES_STRICT_TYPES() \
ZEND_CALL_USES_STRICT_TYPES(EG(current_execute_data))
#define EX_VAR(n) ZEND_CALL_VAR(execute_data, n)
#define EX_VAR_NUM(n) ZEND_CALL_VAR_NUM(execute_data, n)
#define EX_VAR_TO_NUM(n) ((uint32_t)(ZEND_CALL_VAR(NULL, n) - ZEND_CALL_VAR_NUM(NULL, 0)))
#define ZEND_OPLINE_TO_OFFSET(opline, target) \
((char*)(target) - (char*)(opline))
#define ZEND_OPLINE_NUM_TO_OFFSET(op_array, opline, opline_num) \
((char*)&(op_array)->opcodes[opline_num] - (char*)(opline))
#define ZEND_OFFSET_TO_OPLINE(base, offset) \
((zend_op*)(((char*)(base)) + (int)offset))
#define ZEND_OFFSET_TO_OPLINE_NUM(op_array, base, offset) \
(ZEND_OFFSET_TO_OPLINE(base, offset) - op_array->opcodes)
#if ZEND_USE_ABS_JMP_ADDR
/* run-time jump target */
# define OP_JMP_ADDR(opline, node) \
(node).jmp_addr
# define ZEND_SET_OP_JMP_ADDR(opline, node, val) do { \
(node).jmp_addr = (val); \
} while (0)
/* convert jump target from compile-time to run-time */
# define ZEND_PASS_TWO_UPDATE_JMP_TARGET(op_array, opline, node) do { \
(node).jmp_addr = (op_array)->opcodes + (node).opline_num; \
} while (0)
/* convert jump target back from run-time to compile-time */
# define ZEND_PASS_TWO_UNDO_JMP_TARGET(op_array, opline, node) do { \
(node).opline_num = (node).jmp_addr - (op_array)->opcodes; \
} while (0)
#else
/* run-time jump target */
# define OP_JMP_ADDR(opline, node) \
ZEND_OFFSET_TO_OPLINE(opline, (node).jmp_offset)
# define ZEND_SET_OP_JMP_ADDR(opline, node, val) do { \
(node).jmp_offset = ZEND_OPLINE_TO_OFFSET(opline, val); \
} while (0)
/* convert jump target from compile-time to run-time */
# define ZEND_PASS_TWO_UPDATE_JMP_TARGET(op_array, opline, node) do { \
(node).jmp_offset = ZEND_OPLINE_NUM_TO_OFFSET(op_array, opline, (node).opline_num); \
} while (0)
/* convert jump target back from run-time to compile-time */
# define ZEND_PASS_TWO_UNDO_JMP_TARGET(op_array, opline, node) do { \
(node).opline_num = ZEND_OFFSET_TO_OPLINE_NUM(op_array, opline, (node).jmp_offset); \
} while (0)
#endif
/* constant-time constant */
# define CT_CONSTANT_EX(op_array, num) \
((op_array)->literals + (num))
# define CT_CONSTANT(node) \
CT_CONSTANT_EX(CG(active_op_array), (node).constant)
#if ZEND_USE_ABS_CONST_ADDR
/* run-time constant */
# define RT_CONSTANT_EX(base, node) \
(node).zv
/* convert constant from compile-time to run-time */
# define ZEND_PASS_TWO_UPDATE_CONSTANT(op_array, node) do { \
(node).zv = CT_CONSTANT_EX(op_array, (node).constant); \
} while (0)
/* convert constant back from run-time to compile-time */
# define ZEND_PASS_TWO_UNDO_CONSTANT(op_array, node) do { \
(node).constant = (node).zv - (op_array)->literals; \
} while (0)
#else
/* run-time constant */
# define RT_CONSTANT_EX(base, node) \
((zval*)(((char*)(base)) + (node).constant))
/* convert constant from compile-time to run-time */
# define ZEND_PASS_TWO_UPDATE_CONSTANT(op_array, node) do { \
(node).constant *= sizeof(zval); \
} while (0)
/* convert constant back from run-time to compile-time (do nothing) */
# define ZEND_PASS_TWO_UNDO_CONSTANT(op_array, node) do { \
(node).constant /= sizeof(zval); \
} while (0)
#endif
#if ZEND_EX_USE_LITERALS
# define EX_LITERALS() \
EX(literals)
# define EX_LOAD_LITERALS(op_array) do { \
EX(literals) = (op_array)->literals; \
} while (0)
#else
# define EX_LITERALS() \
EX(func)->op_array.literals
# define EX_LOAD_LITERALS(op_array) do { \
} while (0)
#endif
/* run-time constant */
#define RT_CONSTANT(op_array, node) \
RT_CONSTANT_EX((op_array)->literals, node)
/* constant in currently executed function */
#define EX_CONSTANT(node) \
RT_CONSTANT_EX(EX_LITERALS(), node)
#if ZEND_EX_USE_RUN_TIME_CACHE
# define EX_RUN_TIME_CACHE() \
EX(run_time_cache)
# define EX_LOAD_RUN_TIME_CACHE(op_array) do { \
EX(run_time_cache) = (op_array)->run_time_cache; \
} while (0)
#else
# define EX_RUN_TIME_CACHE() \
EX(func)->op_array.run_time_cache
# define EX_LOAD_RUN_TIME_CACHE(op_array) do { \
} while (0)
#endif
#define IS_CONST (1<<0)
#define IS_TMP_VAR (1<<1)
#define IS_VAR (1<<2)
#define IS_UNUSED (1<<3) /* Unused variable */
#define IS_CV (1<<4) /* Compiled variable */
#include "zend_globals.h"
BEGIN_EXTERN_C()
void init_compiler(void);
void shutdown_compiler(void);
void zend_init_compiler_data_structures(void);
void zend_oparray_context_begin(zend_oparray_context *prev_context);
void zend_oparray_context_end(zend_oparray_context *prev_context);
void zend_file_context_begin(zend_file_context *prev_context);
void zend_file_context_end(zend_file_context *prev_context);
extern ZEND_API zend_op_array *(*zend_compile_file)(zend_file_handle *file_handle, int type);
extern ZEND_API zend_op_array *(*zend_compile_string)(zval *source_string, char *filename);
ZEND_API int lex_scan(zval *zendlval);
void startup_scanner(void);
void shutdown_scanner(void);
ZEND_API zend_string *zend_set_compiled_filename(zend_string *new_compiled_filename);
ZEND_API void zend_restore_compiled_filename(zend_string *original_compiled_filename);
ZEND_API zend_string *zend_get_compiled_filename(void);
ZEND_API int zend_get_compiled_lineno(void);
ZEND_API size_t zend_get_scanned_file_offset(void);
ZEND_API zend_string *zend_get_compiled_variable_name(const zend_op_array *op_array, uint32_t var);
#ifdef ZTS
const char *zend_get_zendtext(void);
int zend_get_zendleng(void);
#endif
typedef int (ZEND_FASTCALL *unary_op_type)(zval *, zval *);
typedef int (ZEND_FASTCALL *binary_op_type)(zval *, zval *, zval *);
ZEND_API unary_op_type get_unary_op(int opcode);
ZEND_API binary_op_type get_binary_op(int opcode);
void zend_stop_lexing(void);
void zend_emit_final_return(int return_one);
/* Used during AST construction */
zend_ast *zend_ast_append_str(zend_ast *left, zend_ast *right);
zend_ast *zend_negate_num_string(zend_ast *ast);
uint32_t zend_add_class_modifier(uint32_t flags, uint32_t new_flag);
uint32_t zend_add_member_modifier(uint32_t flags, uint32_t new_flag);
void zend_handle_encoding_declaration(zend_ast *ast);
/* parser-driven code generators */
void zend_do_free(znode *op1);
ZEND_API int do_bind_function(const zend_op_array *op_array, const zend_op *opline, HashTable *function_table, zend_bool compile_time);
ZEND_API zend_class_entry *do_bind_class(const zend_op_array *op_array, const zend_op *opline, HashTable *class_table, zend_bool compile_time);
ZEND_API zend_class_entry *do_bind_inherited_class(const zend_op_array *op_array, const zend_op *opline, HashTable *class_table, zend_class_entry *parent_ce, zend_bool compile_time);
ZEND_API void zend_do_delayed_early_binding(const zend_op_array *op_array);
void zend_do_extended_info(void);
void zend_do_extended_fcall_begin(void);
void zend_do_extended_fcall_end(void);
void zend_verify_namespace(void);
void zend_resolve_goto_label(zend_op_array *op_array, zend_op *opline);
ZEND_API void function_add_ref(zend_function *function);
#define INITIAL_OP_ARRAY_SIZE 64
/* helper functions in zend_language_scanner.l */
ZEND_API zend_op_array *compile_file(zend_file_handle *file_handle, int type);
ZEND_API zend_op_array *compile_string(zval *source_string, char *filename);
ZEND_API zend_op_array *compile_filename(int type, zval *filename);
ZEND_API void zend_try_exception_handler();
ZEND_API int zend_execute_scripts(int type, zval *retval, int file_count, ...);
ZEND_API int open_file_for_scanning(zend_file_handle *file_handle);
ZEND_API void init_op_array(zend_op_array *op_array, zend_uchar type, int initial_ops_size);
ZEND_API void destroy_op_array(zend_op_array *op_array);
ZEND_API void zend_destroy_file_handle(zend_file_handle *file_handle);
ZEND_API void zend_cleanup_internal_class_data(zend_class_entry *ce);
ZEND_API void zend_cleanup_internal_classes(void);
ZEND_API void destroy_zend_function(zend_function *function);
ZEND_API void zend_function_dtor(zval *zv);
ZEND_API void destroy_zend_class(zval *zv);
void zend_class_add_ref(zval *zv);
ZEND_API zend_string *zend_mangle_property_name(const char *src1, size_t src1_length, const char *src2, size_t src2_length, int internal);
#define zend_unmangle_property_name(mangled_property, class_name, prop_name) \
zend_unmangle_property_name_ex(mangled_property, class_name, prop_name, NULL)
ZEND_API int zend_unmangle_property_name_ex(const zend_string *name, const char **class_name, const char **prop_name, size_t *prop_len);
#define ZEND_FUNCTION_DTOR zend_function_dtor
#define ZEND_CLASS_DTOR destroy_zend_class
zend_op *get_next_op(zend_op_array *op_array);
void init_op(zend_op *op);
uint32_t get_next_op_number(zend_op_array *op_array);
ZEND_API int pass_two(zend_op_array *op_array);
zend_brk_cont_element *get_next_brk_cont_element(void);
ZEND_API zend_bool zend_is_compiling(void);
ZEND_API char *zend_make_compiled_string_description(const char *name);
ZEND_API void zend_initialize_class_data(zend_class_entry *ce, zend_bool nullify_handlers);
uint32_t zend_get_class_fetch_type(zend_string *name);
ZEND_API zend_uchar zend_get_call_op(const zend_op *init_op, zend_function *fbc);
ZEND_API int zend_is_smart_branch(zend_op *opline);
typedef zend_bool (*zend_auto_global_callback)(zend_string *name);
typedef struct _zend_auto_global {
zend_string *name;
zend_auto_global_callback auto_global_callback;
zend_bool jit;
zend_bool armed;
} zend_auto_global;
ZEND_API int zend_register_auto_global(zend_string *name, zend_bool jit, zend_auto_global_callback auto_global_callback);
ZEND_API void zend_activate_auto_globals(void);
ZEND_API zend_bool zend_is_auto_global(zend_string *name);
ZEND_API zend_bool zend_is_auto_global_str(char *name, size_t len);
ZEND_API size_t zend_dirname(char *path, size_t len);
ZEND_API void zend_set_function_arg_flags(zend_function *func);
int zendlex(zend_parser_stack_elem *elem);
int zend_add_literal(zend_op_array *op_array, zval *zv);
void zend_assert_valid_class_name(const zend_string *const_name);
/* BEGIN: OPCODES */
#include "zend_vm_opcodes.h"
/* END: OPCODES */
/* class fetches */
#define ZEND_FETCH_CLASS_DEFAULT 0
#define ZEND_FETCH_CLASS_SELF 1
#define ZEND_FETCH_CLASS_PARENT 2
#define ZEND_FETCH_CLASS_STATIC 3
#define ZEND_FETCH_CLASS_AUTO 4
#define ZEND_FETCH_CLASS_INTERFACE 5
#define ZEND_FETCH_CLASS_TRAIT 6
#define ZEND_FETCH_CLASS_MASK 0x0f
#define ZEND_FETCH_CLASS_NO_AUTOLOAD 0x80
#define ZEND_FETCH_CLASS_SILENT 0x0100
#define ZEND_FETCH_CLASS_EXCEPTION 0x0200
#define ZEND_PARAM_REF (1<<0)
#define ZEND_PARAM_VARIADIC (1<<1)
#define ZEND_NAME_FQ 0
#define ZEND_NAME_NOT_FQ 1
#define ZEND_NAME_RELATIVE 2
#define ZEND_TYPE_NULLABLE (1<<8)
#define ZEND_ARRAY_SYNTAX_LIST 1 /* list() */
#define ZEND_ARRAY_SYNTAX_LONG 2 /* array() */
#define ZEND_ARRAY_SYNTAX_SHORT 3 /* [] */
/* var status for backpatching */
#define BP_VAR_R 0
#define BP_VAR_W 1
#define BP_VAR_RW 2
#define BP_VAR_IS 3
#define BP_VAR_FUNC_ARG 4
#define BP_VAR_UNSET 5
/* Bottom 3 bits are the type, top bits are arg num for BP_VAR_FUNC_ARG */
#define BP_VAR_SHIFT 3
#define BP_VAR_MASK 7
#define ZEND_INTERNAL_FUNCTION 1
#define ZEND_USER_FUNCTION 2
#define ZEND_OVERLOADED_FUNCTION 3
#define ZEND_EVAL_CODE 4
#define ZEND_OVERLOADED_FUNCTION_TEMPORARY 5
/* A quick check (type == ZEND_USER_FUNCTION || type == ZEND_EVAL_CODE) */
#define ZEND_USER_CODE(type) ((type & 1) == 0)
#define ZEND_INTERNAL_CLASS 1
#define ZEND_USER_CLASS 2
#define ZEND_EVAL (1<<0)
#define ZEND_INCLUDE (1<<1)
#define ZEND_INCLUDE_ONCE (1<<2)
#define ZEND_REQUIRE (1<<3)
#define ZEND_REQUIRE_ONCE (1<<4)
#define ZEND_CT (1<<0)
#define ZEND_RT (1<<1)
/* global/local fetches */
#define ZEND_FETCH_GLOBAL 0x00000000
#define ZEND_FETCH_LOCAL 0x10000000
#define ZEND_FETCH_GLOBAL_LOCK 0x40000000
#define ZEND_FETCH_TYPE_MASK 0x70000000
#define ZEND_FETCH_STANDARD 0x00000000
#define ZEND_ISSET 0x02000000
#define ZEND_ISEMPTY 0x01000000
#define ZEND_ISSET_ISEMPTY_MASK (ZEND_ISSET | ZEND_ISEMPTY)
#define ZEND_FETCH_ARG_MASK 0x000fffff
#define ZEND_FREE_ON_RETURN (1<<0)
#define ZEND_SEND_BY_VAL 0
#define ZEND_SEND_BY_REF 1
#define ZEND_SEND_PREFER_REF 2
#define ZEND_DIM_IS 1
static zend_always_inline int zend_check_arg_send_type(const zend_function *zf, uint32_t arg_num, uint32_t mask)
{
arg_num--;
if (UNEXPECTED(arg_num >= zf->common.num_args)) {
if (EXPECTED((zf->common.fn_flags & ZEND_ACC_VARIADIC) == 0)) {
return 0;
}
arg_num = zf->common.num_args;
}
return UNEXPECTED((zf->common.arg_info[arg_num].pass_by_reference & mask) != 0);
}
#define ARG_MUST_BE_SENT_BY_REF(zf, arg_num) \
zend_check_arg_send_type(zf, arg_num, ZEND_SEND_BY_REF)
#define ARG_SHOULD_BE_SENT_BY_REF(zf, arg_num) \
zend_check_arg_send_type(zf, arg_num, ZEND_SEND_BY_REF|ZEND_SEND_PREFER_REF)
#define ARG_MAY_BE_SENT_BY_REF(zf, arg_num) \
zend_check_arg_send_type(zf, arg_num, ZEND_SEND_PREFER_REF)
/* Quick API to check firat 12 arguments */
#define MAX_ARG_FLAG_NUM 12
#ifdef WORDS_BIGENDIAN
# define ZEND_SET_ARG_FLAG(zf, arg_num, mask) do { \
(zf)->quick_arg_flags |= ((mask) << ((arg_num) - 1) * 2); \
} while (0)
# define ZEND_CHECK_ARG_FLAG(zf, arg_num, mask) \
(((zf)->quick_arg_flags >> (((arg_num) - 1) * 2)) & (mask))
#else
# define ZEND_SET_ARG_FLAG(zf, arg_num, mask) do { \
(zf)->quick_arg_flags |= (((mask) << 6) << (arg_num) * 2); \
} while (0)
# define ZEND_CHECK_ARG_FLAG(zf, arg_num, mask) \
(((zf)->quick_arg_flags >> (((arg_num) + 3) * 2)) & (mask))
#endif
#define QUICK_ARG_MUST_BE_SENT_BY_REF(zf, arg_num) \
ZEND_CHECK_ARG_FLAG(zf, arg_num, ZEND_SEND_BY_REF)
#define QUICK_ARG_SHOULD_BE_SENT_BY_REF(zf, arg_num) \
ZEND_CHECK_ARG_FLAG(zf, arg_num, ZEND_SEND_BY_REF|ZEND_SEND_PREFER_REF)
#define QUICK_ARG_MAY_BE_SENT_BY_REF(zf, arg_num) \
ZEND_CHECK_ARG_FLAG(zf, arg_num, ZEND_SEND_PREFER_REF)
#define ZEND_RETURN_VAL 0
#define ZEND_RETURN_REF 1
#define ZEND_RETURNS_FUNCTION (1<<0)
#define ZEND_RETURNS_VALUE (1<<1)
#define ZEND_ARRAY_ELEMENT_REF (1<<0)
#define ZEND_ARRAY_NOT_PACKED (1<<1)
#define ZEND_ARRAY_SIZE_SHIFT 2
/* For "use" AST nodes and the seen symbol table */
#define ZEND_SYMBOL_CLASS (1<<0)
#define ZEND_SYMBOL_FUNCTION (1<<1)
#define ZEND_SYMBOL_CONST (1<<2)
/* Pseudo-opcodes that are used only temporarily during compilation */
#define ZEND_GOTO 253
#define ZEND_BRK 254
#define ZEND_CONT 255
END_EXTERN_C()
#define ZEND_CLONE_FUNC_NAME "__clone"
#define ZEND_CONSTRUCTOR_FUNC_NAME "__construct"
#define ZEND_DESTRUCTOR_FUNC_NAME "__destruct"
#define ZEND_GET_FUNC_NAME "__get"
#define ZEND_SET_FUNC_NAME "__set"
#define ZEND_UNSET_FUNC_NAME "__unset"
#define ZEND_ISSET_FUNC_NAME "__isset"
#define ZEND_CALL_FUNC_NAME "__call"
#define ZEND_CALLSTATIC_FUNC_NAME "__callstatic"
#define ZEND_TOSTRING_FUNC_NAME "__tostring"