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php-src/Zend/zend_compile.h

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/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 1998-2000 Zend Technologies Ltd. (http://www.zend.com) |
+----------------------------------------------------------------------+
| This source file is subject to version 0.92 of the Zend license, |
| that is bundled with this package in the file LICENSE, and is |
| available at through the world-wide-web at |
| http://www.zend.com/license/0_92.txt. |
| If you did not receive a copy of the Zend license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@zend.com so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andi Gutmans <andi@zend.com> |
| Zeev Suraski <zeev@zend.com> |
+----------------------------------------------------------------------+
*/
#ifndef ZEND_COMPILE_H
#define ZEND_COMPILE_H
#include "zend.h"
#ifdef HAVE_STDARG_H
# include <stdarg.h>
#endif
#ifdef __cplusplus
#include <istream.h>
#endif
#include "zend_llist.h"
#define DEBUG_ZEND 0
#ifndef ZTS
# define SUPPORT_INTERACTIVE 1
#else
# define SUPPORT_INTERACTIVE 0
#endif
#define FREE_PNODE(znode) zval_dtor(&znode->u.constant);
#define FREE_OP(op, should_free) if (should_free) zval_dtor(&Ts[(op)->u.var].tmp_var);
#if SUPPORT_INTERACTIVE
#define INC_BPC(op_array) ((op_array)->backpatch_count++)
#define DEC_BPC(op_array) ((op_array)->backpatch_count--)
#define HANDLE_INTERACTIVE() if (EG(interactive)) { execute_new_code(CLS_C); }
#else
#define INC_BPC(op_array)
#define DEC_BPC(op_array)
#define HANDLE_INTERACTIVE()
#endif
typedef struct _zend_op_array zend_op_array;
typedef struct _znode {
int op_type;
union {
zval constant;
zend_uint var;
zend_uint opline_num; /* Needs to be signed */
zend_uint fetch_type;
zend_op_array *op_array;
struct {
zend_uint var; /* dummy */
zend_uint type;
} EA;
} u;
} znode;
typedef struct _zend_op {
zend_uchar opcode;
znode result;
znode op1;
znode op2;
ulong extended_value;
uint lineno;
} zend_op;
typedef struct _zend_brk_cont_element {
int cont;
int brk;
int parent;
} zend_brk_cont_element;
struct _zend_op_array {
zend_uchar type; /* MUST be the first element of this struct! */
zend_uchar *arg_types; /* MUST be the second element of this struct! */
char *function_name; /* MUST be the third element of this struct! */
zend_uint *refcount;
zend_op *opcodes;
zend_uint last, size;
zend_uint T;
zend_brk_cont_element *brk_cont_array;
zend_uint last_brk_cont;
zend_uint current_brk_cont;
zend_bool uses_globals;
/* static variables support */
HashTable *static_variables;
#if SUPPORT_INTERACTIVE
int start_op_number, end_op_number;
int last_executed_op_number;
int backpatch_count;
#endif
zend_bool return_reference;
zend_bool done_pass_two;
char *filename;
void *reserved[ZEND_MAX_RESERVED_RESOURCES];
};
typedef struct _zend_internal_function {
zend_uchar type; /* MUST be the first element of this struct! */
zend_uchar *arg_types; /* MUST be the second element of this struct */
char *function_name; /* MUST be the third element of this struct */
void (*handler)(INTERNAL_FUNCTION_PARAMETERS);
} zend_internal_function;
typedef struct _zend_overloaded_function {
zend_uchar type; /* MUST be the first element of this struct! */
zend_uchar *arg_types; /* MUST be the second element of this struct */
char *function_name; /* MUST be the third element of this struct */
zend_uint var;
} zend_overloaded_function;
typedef union _zend_function {
zend_uchar type; /* MUST be the first element of this struct! */
struct {
zend_uchar type; /* never used */
zend_uchar *arg_types;
char *function_name;
} common;
zend_op_array op_array;
zend_internal_function internal_function;
zend_overloaded_function overloaded_function;
} zend_function;
typedef struct _zend_function_state {
HashTable *function_symbol_table;
zend_function *function;
void *reserved[ZEND_MAX_RESERVED_RESOURCES];
} zend_function_state;
typedef struct _zend_switch_entry {
znode cond;
int default_case;
int control_var;
} zend_switch_entry;
typedef struct _list_llist_element {
znode var;
zend_llist dimensions;
znode value;
} list_llist_element;
typedef struct _zend_file_handle {
zend_uchar type;
char *filename;
char *opened_path;
union {
int fd;
FILE *fp;
#ifdef __cplusplus
istream *is;
#endif
} handle;
zend_bool free_filename;
} zend_file_handle;
#define IS_CONST (1<<0)
#define IS_TMP_VAR (1<<1)
#define IS_VAR (1<<2)
#define IS_UNUSED (1<<3) /* Unused variable */
#define EXT_TYPE_UNUSED (1<<0)
#include "zend_globals.h"
BEGIN_EXTERN_C()
void init_compiler(CLS_D ELS_DC);
void shutdown_compiler(CLS_D);
extern ZEND_API zend_op_array *(*zend_compile_file)(zend_file_handle *file_handle, int type CLS_DC);
void zend_activate(CLS_D ELS_DC);
void zend_deactivate(CLS_D ELS_DC);
void zend_activate_modules(void);
void zend_deactivate_modules(void);
int lex_scan(zval *zendlval CLS_DC);
void startup_scanner(CLS_D);
void shutdown_scanner(CLS_D);
ZEND_API char *zend_set_compiled_filename(char *new_compiled_filename);
ZEND_API void zend_restore_compiled_filename(char *original_compiled_filename);
ZEND_API char *zend_get_compiled_filename(CLS_D);
ZEND_API int zend_get_compiled_lineno(CLS_D);
#ifdef ZTS
const char *zend_get_zendtext(CLS_D);
int zend_get_zendleng(CLS_D);
#endif
/* parser-driven code generators */
void do_binary_op(int op, znode *result, znode *op1, znode *op2 CLS_DC);
void do_unary_op(int op, znode *result, znode *op1 CLS_DC);
void do_binary_assign_op(int op, znode *result, znode *op1, znode *op2 CLS_DC);
void do_assign(znode *result, znode *variable, znode *value CLS_DC);
void do_assign_ref(znode *result, znode *lvar, znode *rvar CLS_DC);
void fetch_simple_variable(znode *result, znode *varname, int bp CLS_DC);
void fetch_simple_variable_ex(znode *result, znode *varname, int bp, int op CLS_DC);
void do_indirect_references(znode *result, znode *num_references, znode *variable CLS_DC);
void do_fetch_global_or_static_variable(znode *varname, znode *static_assignment, int fetch_type CLS_DC);
void do_fetch_globals(znode *varname CLS_DC);
void fetch_array_begin(znode *result, znode *varname, znode *first_dim CLS_DC);
void fetch_array_dim(znode *result, znode *parent, znode *dim CLS_DC);
void fetch_string_offset(znode *result, znode *parent, znode *offset CLS_DC);
void do_print(znode *result, znode *arg CLS_DC);
void do_echo(znode *arg CLS_DC);
typedef int (*unary_op_type)(zval *, zval *);
ZEND_API unary_op_type get_unary_op(int opcode);
ZEND_API void *get_binary_op(int opcode);
void do_while_cond(znode *expr, znode *close_bracket_token CLS_DC);
void do_while_end(znode *while_token, znode *close_bracket_token CLS_DC);
void do_do_while_begin(CLS_D);
void do_do_while_end(znode *do_token, znode *expr_open_bracket, znode *expr CLS_DC);
void do_if_cond(znode *cond, znode *closing_bracket_token CLS_DC);
void do_if_after_statement(znode *closing_bracket_token, unsigned char initialize CLS_DC);
void do_if_end(CLS_D);
void do_for_cond(znode *expr, znode *second_semicolon_token CLS_DC);
void do_for_before_statement(znode *cond_start, znode *second_semicolon_token CLS_DC);
void do_for_end(znode *second_semicolon_token CLS_DC);
void do_pre_incdec(znode *result, znode *op1, int op CLS_DC);
void do_post_incdec(znode *result, znode *op1, int op CLS_DC);
void do_begin_variable_parse(CLS_D);
void do_end_variable_parse(int type, int arg_offset CLS_DC);
void do_free(znode *op1 CLS_DC);
void do_init_string(znode *result CLS_DC);
void do_add_char(znode *result, znode *op1, znode *op2 CLS_DC);
void do_add_string(znode *result, znode *op1, znode *op2 CLS_DC);
void do_add_variable(znode *result, znode *op1, znode *op2 CLS_DC);
void do_begin_function_declaration(znode *function_token, znode *function_name, int is_method, int return_reference CLS_DC);
void do_end_function_declaration(znode *function_token CLS_DC);
void do_receive_arg(int op, znode *var, znode *offset, znode *initialization, unsigned char pass_type CLS_DC);
int do_begin_function_call(znode *function_name CLS_DC);
void do_begin_dynamic_function_call(znode *function_name CLS_DC);
void do_begin_class_member_function_call(znode *class_name, znode *function_name CLS_DC);
void do_end_function_call(znode *function_name, znode *result, znode *argument_list, int is_method, int is_dynamic_fcall CLS_DC);
void do_return(znode *expr, int do_end_vparse CLS_DC);
ZEND_API int do_bind_function_or_class(zend_op *opline, HashTable *function_table, HashTable *class_table, int compile_time);
void do_inheritance(zend_class_entry *ce, zend_class_entry *parent_ce);
void do_early_binding(CLS_D);
void do_pass_param(znode *param, int op, int offset CLS_DC);
void do_boolean_or_begin(znode *expr1, znode *op_token CLS_DC);
void do_boolean_or_end(znode *result, znode *expr1, znode *expr2, znode *op_token CLS_DC);
void do_boolean_and_begin(znode *expr1, znode *op_token CLS_DC);
void do_boolean_and_end(znode *result, znode *expr1, znode *expr2, znode *op_token CLS_DC);
void do_brk_cont(int op, znode *expr CLS_DC);
void do_switch_cond(znode *cond CLS_DC);
void do_switch_end(znode *case_list CLS_DC);
void do_case_before_statement(znode *case_list, znode *case_token, znode *case_expr CLS_DC);
void do_case_after_statement(znode *result, znode *case_token CLS_DC);
void do_default_before_statement(znode *case_list, znode *default_token CLS_DC);
void do_begin_class_declaration(znode *class_name, znode *parent_class_name CLS_DC);
void do_end_class_declaration(CLS_D);
void do_declare_property(znode *var_name, znode *value CLS_DC);
void do_fetch_property(znode *result, znode *object, znode *property CLS_DC);
void do_push_object(znode *object CLS_DC);
void do_pop_object(znode *object CLS_DC);
void do_begin_new_object(znode *new_token, znode *class_name CLS_DC);
void do_end_new_object(znode *result, znode *class_name, znode *new_token, znode *argument_list CLS_DC);
void do_fetch_constant(znode *result, znode *constant_name, int mode CLS_DC);
void do_shell_exec(znode *result, znode *cmd CLS_DC);
void do_init_array(znode *result, znode *expr, znode *offset, int is_ref CLS_DC);
void do_add_array_element(znode *result, znode *expr, znode *offset, int is_ref CLS_DC);
void do_add_static_array_element(znode *result, znode *offset, znode *expr);
void do_list_init(CLS_D);
void do_list_end(znode *result, znode *expr CLS_DC);
void do_add_list_element(znode *element CLS_DC);
void do_new_list_begin(CLS_D);
void do_new_list_end(CLS_D);
void do_cast(znode *result, znode *expr, int type CLS_DC);
void do_include_or_eval(int type, znode *result, znode *op1 CLS_DC);
void do_unset(znode *variable CLS_DC);
void do_isset_or_isempty(int type, znode *result, znode *variable CLS_DC);
void do_foreach_begin(znode *foreach_token, znode *array, znode *open_brackets_token, znode *as_token, int variable CLS_DC);
void do_foreach_cont(znode *value, znode *key, znode *as_token CLS_DC);
void do_foreach_end(znode *foreach_token, znode *open_brackets_token CLS_DC);
void do_declare_begin(CLS_D);
void do_declare_stmt(znode *var, znode *val CLS_DC);
void do_declare_end(CLS_D);
void do_end_heredoc(CLS_D);
void do_exit(znode *result, znode *message CLS_DC);
void do_begin_silence(znode *strudel_token CLS_DC);
void do_end_silence(znode *strudel_token CLS_DC);
void do_begin_qm_op(znode *cond, znode *qm_token CLS_DC);
void do_qm_true(znode *true_value, znode *qm_token, znode *colon_token CLS_DC);
void do_qm_false(znode *result, znode *false_value, znode *qm_token, znode *colon_token CLS_DC);
void do_extended_info(CLS_D);
void do_extended_fcall_begin(CLS_D);
void do_extended_fcall_end(CLS_D);
void do_ticks(CLS_D);
ZEND_API void function_add_ref(zend_function *function);
#define INITIAL_OP_ARRAY_SIZE 64
/* helper functions in zend-scanner.l */
ZEND_API zend_op_array *compile_file(zend_file_handle *file_handle, int type CLS_DC);
ZEND_API zend_op_array *compile_string(zval *source_string CLS_DC);
ZEND_API zend_op_array *compile_filename(int type, zval *filename CLS_DC ELS_DC);
ZEND_API int zend_execute_scripts(int type CLS_DC ELS_DC, int file_count, ...);
ZEND_API int open_file_for_scanning(zend_file_handle *file_handle CLS_DC);
ZEND_API void init_op_array(zend_op_array *op_array, int type, int initial_ops_size CLS_DC);
ZEND_API void destroy_op_array(zend_op_array *op_array);
ZEND_API void zend_destroy_file_handle(zend_file_handle *file_handle CLS_DC);
ZEND_API void zend_file_handle_dtor(zend_file_handle *fh);
ZEND_API void destroy_zend_function(zend_function *function);
ZEND_API void destroy_zend_class(zend_class_entry *ce);
void zend_class_add_ref(zend_class_entry *ce);
#define ZEND_FUNCTION_DTOR (void (*)(void *)) destroy_zend_function
#define ZEND_CLASS_DTOR (void (*)(void *)) destroy_zend_class
zend_op *get_next_op(zend_op_array *op_array CLS_DC);
void init_op(zend_op *op CLS_DC);
int get_next_op_number(zend_op_array *op_array);
int print_class(zend_class_entry *class_entry);
void print_op_array(zend_op_array *op_array, int optimizations);
int pass_two(zend_op_array *op_array);
zend_brk_cont_element *get_next_brk_cont_element(zend_op_array *op_array);
ZEND_API zend_bool zend_is_compiling(void);
int zendlex(znode *zendlval CLS_DC);
#define ZEND_NOP 0
#define ZEND_ADD 1
#define ZEND_SUB 2
#define ZEND_MUL 3
#define ZEND_DIV 4
#define ZEND_MOD 5
#define ZEND_SL 6
#define ZEND_SR 7
#define ZEND_CONCAT 8
#define ZEND_BW_OR 9
#define ZEND_BW_AND 10
#define ZEND_BW_XOR 11
#define ZEND_BW_NOT 12
#define ZEND_BOOL_NOT 13
#define ZEND_BOOL_XOR 14
#define ZEND_IS_IDENTICAL 15
#define ZEND_IS_NOT_IDENTICAL 16
#define ZEND_IS_EQUAL 17
#define ZEND_IS_NOT_EQUAL 18
#define ZEND_IS_SMALLER 19
#define ZEND_IS_SMALLER_OR_EQUAL 20
#define ZEND_CAST 21
#define ZEND_QM_ASSIGN 22
#define ZEND_ASSIGN_ADD 23
#define ZEND_ASSIGN_SUB 24
#define ZEND_ASSIGN_MUL 25
#define ZEND_ASSIGN_DIV 26
#define ZEND_ASSIGN_MOD 27
#define ZEND_ASSIGN_SL 28
#define ZEND_ASSIGN_SR 29
#define ZEND_ASSIGN_CONCAT 30
#define ZEND_ASSIGN_BW_OR 31
#define ZEND_ASSIGN_BW_AND 32
#define ZEND_ASSIGN_BW_XOR 33
#define ZEND_PRE_INC 34
#define ZEND_PRE_DEC 35
#define ZEND_POST_INC 36
#define ZEND_POST_DEC 37
#define ZEND_ASSIGN 38
#define ZEND_ASSIGN_REF 39
#define ZEND_ECHO 40
#define ZEND_PRINT 41
#define ZEND_JMP 42
#define ZEND_JMPZ 43
#define ZEND_JMPNZ 44
#define ZEND_JMPZNZ 45
#define ZEND_JMPZ_EX 46
#define ZEND_JMPNZ_EX 47
#define ZEND_CASE 48
#define ZEND_SWITCH_FREE 49
#define ZEND_BRK 50
#define ZEND_CONT 51
#define ZEND_BOOL 52
#define ZEND_INIT_STRING 53
#define ZEND_ADD_CHAR 54
#define ZEND_ADD_STRING 55
#define ZEND_ADD_VAR 56
#define ZEND_BEGIN_SILENCE 57
#define ZEND_END_SILENCE 58
#define ZEND_INIT_FCALL_BY_NAME 59
#define ZEND_DO_FCALL 60
#define ZEND_DO_FCALL_BY_NAME 61
#define ZEND_RETURN 62
#define ZEND_RECV 63
#define ZEND_RECV_INIT 64
#define ZEND_SEND_VAL 65
#define ZEND_SEND_VAR 66
#define ZEND_SEND_REF 67
#define ZEND_NEW 68
#define ZEND_JMP_NO_CTOR 69
#define ZEND_FREE 70
#define ZEND_INIT_ARRAY 71
#define ZEND_ADD_ARRAY_ELEMENT 72
#define ZEND_INCLUDE_OR_EVAL 73
#define ZEND_UNSET_VAR 74
#define ZEND_UNSET_DIM_OBJ 75
#define ZEND_ISSET_ISEMPTY 76
#define ZEND_FE_RESET 77
#define ZEND_FE_FETCH 78
#define ZEND_EXIT 79
/* the following 18 opcodes are 6 groups of 3 opcodes each, and must
* remain in that order!
*/
#define ZEND_FETCH_R 80
#define ZEND_FETCH_DIM_R 81
#define ZEND_FETCH_OBJ_R 82
#define ZEND_FETCH_W 83
#define ZEND_FETCH_DIM_W 84
#define ZEND_FETCH_OBJ_W 85
#define ZEND_FETCH_RW 86
#define ZEND_FETCH_DIM_RW 87
#define ZEND_FETCH_OBJ_RW 88
#define ZEND_FETCH_IS 89
#define ZEND_FETCH_DIM_IS 90
#define ZEND_FETCH_OBJ_IS 91
#define ZEND_FETCH_FUNC_ARG 92
#define ZEND_FETCH_DIM_FUNC_ARG 93
#define ZEND_FETCH_OBJ_FUNC_ARG 94
#define ZEND_FETCH_UNSET 95
#define ZEND_FETCH_DIM_UNSET 96
#define ZEND_FETCH_OBJ_UNSET 97
#define ZEND_FETCH_DIM_TMP_VAR 98
#define ZEND_FETCH_CONSTANT 99
#define ZEND_DECLARE_FUNCTION_OR_CLASS 100
#define ZEND_EXT_STMT 101
#define ZEND_EXT_FCALL_BEGIN 102
#define ZEND_EXT_FCALL_END 103
#define ZEND_EXT_NOP 104
#define ZEND_TICKS 105
/* end of block */
/* global/local fetches */
#define ZEND_FETCH_GLOBAL 0
#define ZEND_FETCH_LOCAL 1
#define ZEND_FETCH_STATIC 2
/* 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_NA 4 /* if not applicable */
#define BP_VAR_FUNC_ARG 5
#define BP_VAR_UNSET 6
#define ZEND_INTERNAL_FUNCTION 1
#define ZEND_USER_FUNCTION 2
#define ZEND_OVERLOADED_FUNCTION 3
#define ZEND_EVAL_CODE 4
#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_ISSET (1<<0)
#define ZEND_ISEMPTY (1<<1)
#define ZEND_CT (1<<0)
#define ZEND_RT (1<<1)
#define ZEND_HANDLE_FILENAME 0
#define ZEND_HANDLE_FD 1
#define ZEND_HANDLE_FP 2
#define ZEND_HANDLE_STDIOSTREAM 3
#define ZEND_HANDLE_FSTREAM 4
#define ZEND_DECLARE_CLASS 1
#define ZEND_DECLARE_FUNCTION 2
#define ZEND_DECLARE_INHERITED_CLASS 3
#define ZEND_FETCH_STANDARD 0
#define ZEND_FETCH_ADD_LOCK 1
#define ZEND_MEMBER_FUNC_CALL 1<<0
#define ZEND_CTOR_CALL 1<<1
#define AI_USE_PTR(ai) \
if ((ai).ptr_ptr) { \
(ai).ptr = *((ai).ptr_ptr); \
(ai).ptr_ptr = &((ai).ptr); \
} else { \
(ai).ptr = NULL; \
}
/* Lost In Stupid Parentheses */
#define ARG_SHOULD_BE_SENT_BY_REF(offset, conduct_check, arg_types) \
( \
conduct_check \
&& arg_types \
&& \
( \
( \
offset<=arg_types[0] \
&& arg_types[offset]==BYREF_FORCE \
) \
|| ( \
offset>=arg_types[0] \
&& arg_types[arg_types[0]]==BYREF_FORCE_REST \
) \
) \
)
#define ZEND_RETURN_VAL 0
#define ZEND_RETURN_REF 1
END_EXTERN_C()
#endif /* ZEND_COMPILE_H */
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