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php-src/Zend/zend_compile.c
Zeev Suraski 96d4220a5d Fix several class issues
1999-08-14 12:54:17 +00:00

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/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 1998, 1999 Andi Gutmans, Zeev Suraski |
+----------------------------------------------------------------------+
| This source file is subject to version 0.91 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_91.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> |
+----------------------------------------------------------------------+
*/
#include "zend.h"
#include "zend_compile.h"
#include "zend_llist.h"
#include "zend_API.h"
#include "zend_variables.h"
#include "zend_operators.h"
ZEND_API zend_op_array *(*zend_compile_files)(int mark_as_ref CLS_DC, int file_count, ...);
#ifndef ZTS
ZEND_API zend_compiler_globals compiler_globals;
ZEND_API zend_executor_globals executor_globals;
#endif
#define SET_UNUSED(op) (op).op_type = IS_UNUSED
static int is_not_internal_function(zend_function *function)
{
return(function->type != ZEND_INTERNAL_FUNCTION);
}
static int is_not_internal_class(zend_class_entry *ce)
{
return(ce->type != ZEND_INTERNAL_CLASS);
}
static void free_filename(void *p)
{
efree(*((char **) p));
}
void init_compiler(CLS_D ELS_DC)
{
zend_stack_init(&CG(bp_stack));
zend_stack_init(&CG(function_call_stack));
zend_stack_init(&CG(switch_cond_stack));
zend_stack_init(&CG(object_stack));
CG(active_class_entry) = NULL;
zend_llist_init(&CG(list_llist), sizeof(list_llist_element), NULL, 0);
zend_llist_init(&CG(dimension_llist), sizeof(int), NULL, 0);
zend_llist_init(&CG(filenames_list), sizeof(char *), free_filename, 0);
CG(short_tags) = ZEND_UV(short_tags);
CG(asp_tags) = ZEND_UV(asp_tags);
CG(handle_op_arrays) = 1;
zend_hash_apply(&module_registry, (int (*)(void *)) module_registry_request_startup);
init_resource_list(ELS_C);
CG(unclean_shutdown) = 0;
zend_llist_init(&CG(open_files), sizeof(void *), zend_open_file_dtor, 0);
}
void shutdown_compiler(CLS_D)
{
zend_stack_destroy(&CG(bp_stack));
zend_stack_destroy(&CG(function_call_stack));
zend_stack_destroy(&CG(switch_cond_stack));
zend_stack_destroy(&CG(object_stack));
zend_llist_destroy(&CG(filenames_list));
zend_hash_apply(CG(function_table), (int (*)(void *)) is_not_internal_function);
zend_hash_apply(CG(class_table), (int (*)(void *)) is_not_internal_class);
zend_llist_destroy(&CG(open_files));
}
ZEND_API char *zend_set_compiled_filename(char *new_compiled_filename)
{
char *p = estrdup(new_compiled_filename);
CLS_FETCH();
zend_llist_add_element(&CG(filenames_list), &p);
CG(compiled_filename) = p;
return p;
}
ZEND_API void zend_restore_compiled_filename(char *original_compiled_filename)
{
CLS_FETCH();
CG(compiled_filename) = original_compiled_filename;
}
ZEND_API char *zend_get_compiled_filename()
{
CLS_FETCH();
return CG(compiled_filename);
}
static int get_temporary_variable(zend_op_array *op_array)
{
return (op_array->T)++;
}
void do_binary_op(int op, znode *result, znode *op1, znode *op2 CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = op;
opline->result.op_type = IS_TMP_VAR;
opline->result.u.var = get_temporary_variable(CG(active_op_array));
opline->op1 = *op1;
opline->op2 = *op2;
*result = opline->result;
}
void do_unary_op(int op, znode *result, znode *op1 CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = op;
opline->result.op_type = IS_TMP_VAR;
opline->result.u.var = get_temporary_variable(CG(active_op_array));
opline->op1 = *op1;
*result = opline->result;
SET_UNUSED(opline->op2);
}
void do_binary_assign_op(int op, znode *result, znode *op1, znode *op2 CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = op;
opline->result.op_type = IS_VAR;
opline->result.u.EA.type = 0;
opline->result.u.var = get_temporary_variable(CG(active_op_array));
opline->op1 = *op1;
opline->op2 = *op2;
*result = opline->result;
}
void do_fetch_globals(znode *varname CLS_DC)
{
if (!CG(active_op_array)->uses_globals
&& varname->op_type == IS_CONST
&& varname->u.constant.type == IS_STRING
&& varname->u.constant.value.str.len == (sizeof("GLOBALS")-1)
&& !memcmp(varname->u.constant.value.str.val, "GLOBALS", sizeof("GLOBALS")-1)) {
CG(active_op_array)->uses_globals = 1;
}
}
void fetch_simple_variable(znode *result, znode *varname, int bp CLS_DC)
{
int next_op_number = get_next_op_number(CG(active_op_array));
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
zend_llist *fetch_list_ptr;
opline->opcode = ZEND_FETCH_W; /* the default mode must be Write, since fetch_simple_variable() is used to define function arguments */
opline->result.op_type = IS_VAR;
opline->result.u.EA.type = 0;
opline->result.u.var = get_temporary_variable(CG(active_op_array));
opline->op1 = *varname;
*result = opline->result;
SET_UNUSED(opline->op2);
opline->op2.u.fetch_type = ZEND_FETCH_LOCAL;
if (bp) {
zend_stack_top(&CG(bp_stack), (void **) &fetch_list_ptr);
zend_llist_add_element(fetch_list_ptr, &next_op_number);
}
}
void fetch_array_begin(znode *result, znode *varname, znode *first_dim CLS_DC)
{
fetch_simple_variable(result, varname, 1 CLS_CC);
fetch_array_dim(result, result, first_dim CLS_CC);
}
void fetch_array_dim(znode *result, znode *parent, znode *dim CLS_DC)
{
int next_op_number = get_next_op_number(CG(active_op_array));
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
zend_llist *fetch_list_ptr;
opline->opcode = ZEND_FETCH_DIM_W; /* the backpatching routine assumes W */
opline->result.op_type = IS_VAR;
opline->result.u.EA.type = 0;
opline->result.u.var = get_temporary_variable(CG(active_op_array));
opline->op1 = *parent;
opline->op2 = *dim;
opline->extended_value = ZEND_FETCH_STANDARD;
*result = opline->result;
zend_stack_top(&CG(bp_stack), (void **) &fetch_list_ptr);
zend_llist_add_element(fetch_list_ptr, &next_op_number);
}
void do_print(znode *result, znode *arg CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->result.op_type = IS_TMP_VAR;
opline->result.u.var = get_temporary_variable(CG(active_op_array));
opline->opcode = ZEND_PRINT;
opline->op1 = *arg;
SET_UNUSED(opline->op2);
*result = opline->result;
}
void do_echo(znode *arg CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_ECHO;
opline->op1 = *arg;
SET_UNUSED(opline->op2);
}
void do_assign(znode *result, znode *variable, znode *value CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_ASSIGN;
opline->result.op_type = IS_VAR;
opline->result.u.EA.type = 0;
opline->result.u.var = get_temporary_variable(CG(active_op_array));
opline->op1 = *variable;
opline->op2 = *value;
*result = opline->result;
}
void do_assign_ref(znode *result, znode *lvar, znode *rvar CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_ASSIGN_REF;
if (result) {
opline->result.op_type = IS_VAR;
opline->result.u.EA.type = 0;
opline->result.u.var = get_temporary_variable(CG(active_op_array));
*result = opline->result;
} else {
SET_UNUSED(opline->result);
}
opline->op1 = *lvar;
opline->op2 = *rvar;
}
static inline void do_begin_loop(CLS_D)
{
zend_brk_cont_element *brk_cont_element;
int parent;
parent = CG(active_op_array)->current_brk_cont;
CG(active_op_array)->current_brk_cont = CG(active_op_array)->last_brk_cont;
brk_cont_element = get_next_brk_cont_element(CG(active_op_array));
brk_cont_element->parent = parent;
}
static inline void do_end_loop(int cont_addr CLS_DC)
{
CG(active_op_array)->brk_cont_array[CG(active_op_array)->current_brk_cont].cont = cont_addr;
CG(active_op_array)->brk_cont_array[CG(active_op_array)->current_brk_cont].brk = get_next_op_number(CG(active_op_array));
CG(active_op_array)->current_brk_cont = CG(active_op_array)->brk_cont_array[CG(active_op_array)->current_brk_cont].parent;
}
void do_while_cond(znode *expr, znode *close_bracket_token CLS_DC)
{
int while_cond_op_number = get_next_op_number(CG(active_op_array));
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_JMPZ;
opline->op1 = *expr;
close_bracket_token->u.opline_num = while_cond_op_number;
SET_UNUSED(opline->op2);
do_begin_loop(CLS_C);
INC_BPC(CG(active_op_array));
}
void do_while_end(znode *while_token, znode *close_bracket_token CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
/* add unconditional jump */
opline->opcode = ZEND_JMP;
opline->op1.u.opline_num = while_token->u.opline_num;
SET_UNUSED(opline->op1);
SET_UNUSED(opline->op2);
/* update while's conditional jmp */
CG(active_op_array)->opcodes[close_bracket_token->u.opline_num].op2.u.opline_num = get_next_op_number(CG(active_op_array));
do_end_loop(while_token->u.opline_num CLS_CC);
DEC_BPC(CG(active_op_array));
}
void do_for_cond(znode *expr, znode *second_semicolon_token CLS_DC)
{
int for_cond_op_number = get_next_op_number(CG(active_op_array));
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_JMPZNZ;
opline->result = *expr; /* the conditional expression */
second_semicolon_token->u.opline_num = for_cond_op_number;
SET_UNUSED(opline->op1);
SET_UNUSED(opline->op2);
}
void do_for_before_statement(znode *cond_start, znode *second_semicolon_token CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_JMP;
opline->op1.u.opline_num = cond_start->u.opline_num;
CG(active_op_array)->opcodes[second_semicolon_token->u.opline_num].op1.u.opline_num = get_next_op_number(CG(active_op_array));
SET_UNUSED(opline->op1);
SET_UNUSED(opline->op2);
do_begin_loop(CLS_C);
INC_BPC(CG(active_op_array));
}
void do_for_end(znode *second_semicolon_token CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_JMP;
opline->op1.u.opline_num = second_semicolon_token->u.opline_num+1;
CG(active_op_array)->opcodes[second_semicolon_token->u.opline_num].op2.u.opline_num = get_next_op_number(CG(active_op_array));
SET_UNUSED(opline->op1);
SET_UNUSED(opline->op2);
do_end_loop(second_semicolon_token->u.opline_num+1 CLS_CC);
DEC_BPC(CG(active_op_array));
}
void do_pre_incdec(znode *result, znode *op1, int op CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = op;
opline->result.op_type = IS_VAR;
opline->result.u.EA.type = 0;
opline->result.u.var = get_temporary_variable(CG(active_op_array));
opline->op1 = *op1;
*result = opline->result;
SET_UNUSED(opline->op2);
}
void do_post_incdec(znode *result, znode *op1, int op CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = op;
opline->result.op_type = IS_TMP_VAR;
opline->result.u.var = get_temporary_variable(CG(active_op_array));
opline->op1 = *op1;
*result = opline->result;
SET_UNUSED(opline->op2);
}
void do_if_cond(znode *cond, znode *closing_bracket_token CLS_DC)
{
int if_cond_op_number = get_next_op_number(CG(active_op_array));
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_JMPZ;
opline->op1 = *cond;
closing_bracket_token->u.opline_num = if_cond_op_number;
SET_UNUSED(opline->op2);
INC_BPC(CG(active_op_array));
}
void do_if_after_statement(znode *closing_bracket_token, unsigned char initialize CLS_DC)
{
int if_end_op_number = get_next_op_number(CG(active_op_array));
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
zend_llist *jmp_list_ptr;
opline->opcode = ZEND_JMP;
/* save for backpatching */
if (initialize) {
zend_llist jmp_list;
zend_llist_init(&jmp_list, sizeof(int), NULL, 0);
zend_stack_push(&CG(bp_stack), (void *) &jmp_list, sizeof(zend_llist));
}
zend_stack_top(&CG(bp_stack), (void **) &jmp_list_ptr);
zend_llist_add_element(jmp_list_ptr, &if_end_op_number);
CG(active_op_array)->opcodes[closing_bracket_token->u.opline_num].op2.u.opline_num = if_end_op_number+1;
SET_UNUSED(opline->op1);
SET_UNUSED(opline->op2);
}
void do_if_end(CLS_D)
{
int next_op_number = get_next_op_number(CG(active_op_array));
zend_llist *jmp_list_ptr;
zend_llist_element *le;
zend_stack_top(&CG(bp_stack), (void **) &jmp_list_ptr);
for (le=jmp_list_ptr->head; le; le = le->next) {
CG(active_op_array)->opcodes[*((int *) le->data)].op1.u.opline_num = next_op_number;
}
zend_llist_destroy(jmp_list_ptr);
zend_stack_del_top(&CG(bp_stack));
DEC_BPC(CG(active_op_array));
}
void do_begin_variable_parse(CLS_D)
{
zend_llist fetch_list;
zend_llist_init(&fetch_list, sizeof(int), NULL, 0);
zend_stack_push(&CG(bp_stack), (void *) &fetch_list, sizeof(zend_llist));
}
void do_end_variable_parse(int type CLS_DC)
{
zend_llist *fetch_list_ptr;
zend_llist_element *le;
zend_op *opline;
zend_stack_top(&CG(bp_stack), (void **) &fetch_list_ptr);
le = fetch_list_ptr->head;
while (le) {
opline = &CG(active_op_array)->opcodes[*((int *) le->data)];
switch (type) {
case BP_VAR_R:
if (opline->opcode == ZEND_FETCH_DIM_W && opline->op2.op_type == IS_UNUSED) {
zend_error(E_COMPILE_ERROR, "Cannot use [] for reading");
}
opline->opcode -= 3;
break;
case BP_VAR_W:
break;
case BP_VAR_RW:
opline->opcode += 3;
break;
case BP_VAR_IS:
opline->opcode += 6; /* 3+3 */
}
le = le->next;
}
zend_llist_destroy(fetch_list_ptr);
zend_stack_del_top(&CG(bp_stack));
}
void do_init_string(znode *result CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_INIT_STRING;
opline->result.op_type = IS_TMP_VAR;
opline->result.u.var = get_temporary_variable(CG(active_op_array));
*result = opline->result;
SET_UNUSED(opline->op1);
SET_UNUSED(opline->op2);
}
void do_add_char(znode *result, znode *op1, znode *op2 CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_ADD_CHAR;
opline->op1 = *op1;
opline->op2 = *op2;
opline->op2.op_type = IS_CONST;
opline->result = opline->op1;
*result = opline->result;
}
void do_add_string(znode *result, znode *op1, znode *op2 CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_ADD_STRING;
opline->op1 = *op1;
opline->op2 = *op2;
opline->op2.op_type = IS_CONST;
opline->result = opline->op1;
*result = opline->result;
}
void do_add_variable(znode *result, znode *op1, znode *op2 CLS_DC)
{
zend_op *opline;
if (op1->op_type == IS_CONST) {
opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_INIT_STRING;
opline->result.op_type = IS_TMP_VAR;
opline->result.u.var = get_temporary_variable(CG(active_op_array));
*result = opline->result;
SET_UNUSED(opline->op1);
SET_UNUSED(opline->op2);
if (op1->u.constant.value.str.len>0) {
opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_ADD_STRING;
opline->result = *result;
opline->op1 = *result;
opline->op2 = *op1;
opline->result = opline->op1;
} else {
zval_dtor(&op1->u.constant);
}
} else {
*result = *op1;
}
opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_ADD_VAR;
opline->result = *result;
opline->op1 = *result;
opline->op2 = *op2;
*result = opline->result;
}
void do_free(znode *op1 CLS_DC)
{
if (op1->op_type==IS_TMP_VAR) {
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_FREE;
opline->op1 = *op1;
SET_UNUSED(opline->op2);
} else if (op1->op_type==IS_VAR) {
zend_op *opline = &CG(active_op_array)->opcodes[CG(active_op_array)->last-1];
if (opline->result.op_type == op1->op_type
&& opline->result.u.var == op1->u.var) {
opline->result.u.EA.type |= EXT_TYPE_UNUSED;
} else {
/* This should be an object instanciation
* Find JMP_NO_CTOR, mark the preceding ASSIGN and the
* proceeding INIT_FCALL_BY_NAME as unused
*/
while (opline>CG(active_op_array)->opcodes) {
if (opline->opcode == ZEND_JMP_NO_CTOR) {
(opline-1)->result.u.EA.type |= EXT_TYPE_UNUSED;
(opline+1)->op1.u.EA.type |= EXT_TYPE_UNUSED;
break;
}
opline--;
}
}
}
}
void do_begin_function_declaration(znode *function_token, znode *function_name, int is_method CLS_DC)
{
zend_op_array op_array;
char *name = function_name->u.constant.value.str.val;
int name_len = function_name->u.constant.value.str.len;
int function_begin_line = function_token->u.opline_num;
function_token->u.op_array = CG(active_op_array);
zend_str_tolower(name, name_len);
init_op_array(&op_array, INITIAL_OP_ARRAY_SIZE);
op_array.function_name = name;
op_array.arg_types = NULL;
if (is_method) {
zend_hash_update(&CG(active_class_entry)->function_table, name, name_len+1, &op_array, sizeof(zend_op_array), (void **) &CG(active_op_array));
} else {
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_DECLARE_FUNCTION_OR_CLASS;
opline->op1.op_type = IS_CONST;
opline->op1.u.constant.type = IS_LONG;
opline->op1.u.constant.value.lval = zend_hash_next_free_element(CG(function_table));
opline->op2.op_type = IS_CONST;
opline->op2.u.constant.type = IS_STRING;
opline->op2.u.constant.value.str.val = estrndup(name, name_len);
opline->op2.u.constant.value.str.len = name_len;
opline->extended_value = ZEND_DECLARE_FUNCTION;
zend_hash_next_index_insert(CG(function_table), &op_array, sizeof(zend_op_array), (void **) &CG(active_op_array));
}
if (CG(extended_info)) {
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_EXT_NOP;
opline->lineno = function_begin_line;
SET_UNUSED(opline->op1);
SET_UNUSED(opline->op2);
}
}
void do_end_function_declaration(znode *function_token CLS_DC)
{
pass_two(CG(active_op_array));
CG(active_op_array) = function_token->u.op_array;
}
void do_receive_arg(int op, znode *var, znode *offset, znode *initialization, unsigned char pass_type CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = op;
opline->result = *var;
opline->op1 = *offset;
if ((op == ZEND_RECV_INIT) && initialization) {
opline->op2 = *initialization;
} else {
SET_UNUSED(opline->op2);
}
if (pass_type==BYREF_FORCE && !CG(active_op_array)->arg_types) {
int i;
CG(active_op_array)->arg_types = (unsigned char *) emalloc(sizeof(unsigned char)*(offset->u.constant.value.lval+1));
for (i=1; i<offset->u.constant.value.lval; i++) {
CG(active_op_array)->arg_types[i] = BYREF_NONE;
}
CG(active_op_array)->arg_types[0]=(unsigned char) offset->u.constant.value.lval;
}
if (CG(active_op_array)->arg_types) {
CG(active_op_array)->arg_types = (unsigned char *) erealloc(CG(active_op_array)->arg_types, sizeof(unsigned char)*(offset->u.constant.value.lval+1));
CG(active_op_array)->arg_types[offset->u.constant.value.lval] = pass_type;
CG(active_op_array)->arg_types[0]++;
}
}
int do_begin_function_call(znode *function_name CLS_DC)
{
zend_function *function;
zend_str_tolower(function_name->u.constant.value.str.val, function_name->u.constant.value.str.len);
if (zend_hash_find(CG(function_table), function_name->u.constant.value.str.val,function_name->u.constant.value.str.len+1, (void **) &function)==FAILURE) {
znode tmp = *function_name;
zval_copy_ctor(&tmp.u.constant);
do_begin_dynamic_function_call(&tmp CLS_CC);
return 1; /* Dynamic */
}
switch (function->type) {
case ZEND_USER_FUNCTION: {
zend_op_array *op_array = (zend_op_array *) function;
zend_stack_push(&CG(function_call_stack), (void *) &op_array, sizeof(zend_function *));
}
break;
case ZEND_INTERNAL_FUNCTION: {
zend_internal_function *internal_function = (zend_internal_function *) function;
zend_stack_push(&CG(function_call_stack), (void *) &internal_function, sizeof(zend_function *));
}
break;
}
return 0;
}
void do_begin_dynamic_function_call(znode *function_name CLS_DC)
{
unsigned char *ptr = NULL;
int last_op_number = get_next_op_number(CG(active_op_array))-1;
if (last_op_number>=0 && CG(active_op_array)->opcodes[last_op_number].opcode == ZEND_FETCH_OBJ_R) {
CG(active_op_array)->opcodes[last_op_number].opcode = ZEND_INIT_FCALL_BY_NAME;
CG(active_op_array)->opcodes[last_op_number].extended_value = ZEND_MEMBER_FUNC_CALL;
} else {
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_INIT_FCALL_BY_NAME;
opline->op2 = *function_name;
opline->extended_value = 0;
SET_UNUSED(opline->op1);
}
zend_stack_push(&CG(function_call_stack), (void *) &ptr, sizeof(zend_function *));
}
void do_begin_class_member_function_call(znode *class_name, znode *function_name CLS_DC)
{
unsigned char *ptr = NULL;
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_INIT_FCALL_BY_NAME;
zend_str_tolower(class_name->u.constant.value.str.val, class_name->u.constant.value.str.len);
opline->op1 = *class_name;
opline->op2 = *function_name;
opline->extended_value = ZEND_MEMBER_FUNC_CALL;
zval_copy_ctor(&opline->op2.u.constant);
zend_stack_push(&CG(function_call_stack), (void *) &ptr, sizeof(zend_function *));
}
void do_end_function_call(znode *function_name, znode *result, znode *argument_list, int is_method, int is_dynamic_fcall CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
ELS_FETCH();
if (function_name->op_type==IS_CONST && !is_method && !is_dynamic_fcall) {
opline->opcode = ZEND_DO_FCALL;
} else {
opline->opcode = ZEND_DO_FCALL_BY_NAME;
}
opline->op1 = *function_name;
opline->result.u.var = get_temporary_variable(CG(active_op_array));
opline->result.op_type = IS_TMP_VAR;
*result = opline->result;
SET_UNUSED(opline->op2);
opline->op2.u.constant.value.lval = is_method;
zend_stack_del_top(&CG(function_call_stack));
opline->extended_value = argument_list->u.constant.value.lval;
}
void do_pass_param(znode *param, int op, int offset CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
unsigned char *arg_types;
int original_op=op;
zend_function **function_ptr_ptr, *function_ptr;
zend_stack_top(&CG(function_call_stack), (void **) &function_ptr_ptr);
function_ptr = *function_ptr_ptr;
if (function_ptr) {
arg_types = function_ptr->common.arg_types;
opline->extended_value = ZEND_DO_FCALL;
} else {
arg_types = NULL;
opline->extended_value = ZEND_DO_FCALL_BY_NAME;
}
if (op == ZEND_SEND_VAL) {
switch (param->op_type) {
case IS_CONST: /* constants behave like variables when passed to functions,
* as far as reference counting is concerned. Treat them
* as if they were variables here.
*/
case IS_VAR:
op = ZEND_SEND_VAR;
break;
}
}
if (arg_types && offset<=arg_types[0]
&& arg_types[offset]==BYREF_FORCE) {
/* change to passing by reference */
switch (param->op_type) {
case IS_VAR:
op = ZEND_SEND_REF;
break;
default:
zend_error(E_COMPILE_ERROR, "Only variables can be passed by reference");
break;
}
}
if (original_op==ZEND_SEND_VAR) {
switch(op) {
case ZEND_SEND_VAR:
if (function_ptr) {
do_end_variable_parse(BP_VAR_R CLS_CC);
} else {
do_end_variable_parse(BP_VAR_W CLS_CC);
}
break;
case ZEND_SEND_REF:
do_end_variable_parse(BP_VAR_W CLS_CC);
break;
}
}
opline->opcode = op;
opline->op1 = *param;
opline->op2.u.opline_num = offset;
SET_UNUSED(opline->op2);
}
static void generate_free_switch_expr(zend_switch_entry *switch_entry CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_SWITCH_FREE;
opline->op1 = switch_entry->cond;
SET_UNUSED(opline->op2);
}
void do_return(znode *expr CLS_DC)
{
zend_op *opline;
#ifdef ZTS
zend_stack_apply_with_argument(&CG(switch_cond_stack), (void (*)(void *element, void *)) generate_free_switch_expr, ZEND_STACK_APPLY_TOPDOWN CLS_CC);
#else
zend_stack_apply(&CG(switch_cond_stack), (void (*)(void *element)) generate_free_switch_expr, ZEND_STACK_APPLY_TOPDOWN);
#endif
opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_RETURN;
if (expr) {
opline->op1 = *expr;
} else {
var_uninit(&opline->op1.u.constant);
opline->op1.op_type = IS_CONST;
INIT_PZVAL(&opline->op1.u.constant);
}
SET_UNUSED(opline->op2);
}
static void function_add_ref(zend_function *function)
{
if (function->type == ZEND_USER_FUNCTION) {
(*((zend_op_array *) function)->refcount)++;
}
}
static void do_inherit_parent_constructor(zend_class_entry *ce)
{
if (ce->parent
&& !zend_hash_exists(&ce->function_table, ce->name, ce->name_length+1)) {
zend_function *function;
if (zend_hash_find(&ce->parent->function_table, ce->parent->name, ce->parent->name_length+1, (void **) &function)==SUCCESS) {
/* inherit parent's constructor */
zend_hash_update(&ce->function_table, ce->name, ce->name_length+1, function, sizeof(zend_function), NULL);
function_add_ref(function);
}
}
}
ZEND_API int do_bind_function_or_class(zend_op *opline, HashTable *function_table, HashTable *class_table, int compile_time)
{
switch (opline->extended_value) {
case ZEND_DECLARE_FUNCTION: {
zend_function *function;
zend_hash_index_find(function_table, opline->op1.u.constant.value.lval, (void **) &function);
(*function->op_array.refcount)++;
if (zend_hash_add(function_table, opline->op2.u.constant.value.str.val, opline->op2.u.constant.value.str.len+1, function, sizeof(zend_function), NULL)==FAILURE) {
if (!compile_time) {
zend_error(E_ERROR, "Cannot redeclare %s()", opline->op2.u.constant.value.str.val);
}
return FAILURE;
} else {
return SUCCESS;
}
}
break;
case ZEND_DECLARE_CLASS: {
zend_class_entry *ce;
zend_hash_index_find(class_table, opline->op1.u.constant.value.lval, (void **) &ce);
(*ce->refcount)++;
if (zend_hash_add(class_table, opline->op2.u.constant.value.str.val, opline->op2.u.constant.value.str.len+1, ce, sizeof(zend_class_entry), NULL)==FAILURE) {
(*ce->refcount)--;
if (!compile_time) {
zend_error(E_ERROR, "Cannot redeclare class %s", opline->op2.u.constant.value.str.val);
}
return FAILURE;
} else {
return SUCCESS;
}
}
break;
case ZEND_DECLARE_INHERITED_CLASS: {
zend_class_entry *ce, *parent_ce;
char *class_name, *parent_name;
zend_function tmp_zend_function;
zval *tmp;
zend_hash_index_find(class_table, opline->op1.u.constant.value.lval, (void **) &ce);
(*ce->refcount)++;
/* Restore base class / derived class names */
parent_name = opline->op2.u.constant.value.str.val;
class_name = strchr(opline->op2.u.constant.value.str.val, ':');
if (!class_name) {
zend_error(E_CORE_ERROR, "Invalid runtime class entry");
}
*class_name++ = 0;
/* Obtain parent class */
if (zend_hash_find(class_table, parent_name, strlen(parent_name)+1, (void **) &parent_ce)==FAILURE) {
if (!compile_time) {
zend_error(E_ERROR, "Class %s: Cannot inherit from undefined class %s", class_name, parent_name);
}
(*ce->refcount)--;
*(class_name-1) = ':';
return FAILURE;
}
/* Perform inheritence */
zend_hash_merge(&ce->default_properties, &parent_ce->default_properties, (void (*)(void *)) zval_add_ref, (void *) &tmp, sizeof(zval *), 0);
zend_hash_merge(&ce->function_table, &parent_ce->function_table, (void (*)(void *)) function_add_ref, &tmp_zend_function, sizeof(zend_function), 0);
ce->parent = parent_ce;
do_inherit_parent_constructor(ce);
/* Register the derived class */
if (zend_hash_add(class_table, class_name, strlen(class_name)+1, ce, sizeof(zend_class_entry), NULL)==FAILURE) {
if (compile_time) {
zend_error(E_ERROR, "Cannot redeclare class %s", opline->op2.u.constant.value.str.val);
}
(*ce->refcount)--;
zend_hash_destroy(&ce->function_table);
zend_hash_destroy(&ce->default_properties);
return FAILURE;
}
return SUCCESS;
}
break;
}
return FAILURE;
}
void do_early_binding(CLS_D)
{
zend_op *opline = &CG(active_op_array)->opcodes[CG(active_op_array)->last-1];
if (do_bind_function_or_class(opline, CG(function_table), CG(class_table), 1)==FAILURE) {
return;
}
switch (opline->extended_value) {
case ZEND_DECLARE_FUNCTION:
zend_hash_index_del(CG(function_table), opline->op1.u.constant.value.lval);
break;
case ZEND_DECLARE_CLASS:
zend_hash_index_del(CG(class_table), opline->op1.u.constant.value.lval);
break;
}
zval_dtor(&opline->op2.u.constant);
opline->opcode = ZEND_NOP;
SET_UNUSED(opline->op1);
SET_UNUSED(opline->op2);
}
void do_boolean_or_begin(znode *expr1, znode *op_token CLS_DC)
{
int next_op_number = get_next_op_number(CG(active_op_array));
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_JMPNZ_EX;
if (expr1->op_type == IS_TMP_VAR) {
opline->result = *expr1;
} else {
opline->result.u.var = get_temporary_variable(CG(active_op_array));
opline->result.op_type = IS_TMP_VAR;
}
opline->op1 = *expr1;
SET_UNUSED(opline->op2);
op_token->u.opline_num = next_op_number;
*expr1 = opline->result;
}
void do_boolean_or_end(znode *result, znode *expr1, znode *expr2, znode *op_token CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
*result = *expr1; /* we saved the original result in expr1 */
opline->opcode = ZEND_BOOL;
opline->result = *result;
opline->op1 = *expr2;
SET_UNUSED(opline->op2);
CG(active_op_array)->opcodes[op_token->u.opline_num].op2.u.opline_num = get_next_op_number(CG(active_op_array));
}
void do_boolean_and_begin(znode *expr1, znode *op_token CLS_DC)
{
int next_op_number = get_next_op_number(CG(active_op_array));
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_JMPZ_EX;
if (expr1->op_type == IS_TMP_VAR) {
opline->result = *expr1;
} else {
opline->result.u.var = get_temporary_variable(CG(active_op_array));
opline->result.op_type = IS_TMP_VAR;
}
opline->op1 = *expr1;
SET_UNUSED(opline->op2);
op_token->u.opline_num = next_op_number;
*expr1 = opline->result;
}
void do_boolean_and_end(znode *result, znode *expr1, znode *expr2, znode *op_token CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
*result = *expr1; /* we saved the original result in expr1 */
opline->opcode = ZEND_BOOL;
opline->result = *result;
opline->op1 = *expr2;
SET_UNUSED(opline->op2);
CG(active_op_array)->opcodes[op_token->u.opline_num].op2.u.opline_num = get_next_op_number(CG(active_op_array));
}
void do_do_while_begin(CLS_D)
{
do_begin_loop(CLS_C);
INC_BPC(CG(active_op_array));
}
void do_do_while_end(znode *do_token, znode *expr CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_JMPNZ;
opline->op1 = *expr;
opline->op2.u.opline_num = do_token->u.opline_num;
SET_UNUSED(opline->op2);
do_end_loop(do_token->u.opline_num CLS_CC);
DEC_BPC(CG(active_op_array));
}
void do_brk_cont(int op, znode *expr CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = op;
opline->op1.u.opline_num = CG(active_op_array)->current_brk_cont;
SET_UNUSED(opline->op1);
if (expr) {
opline->op2 = *expr;
} else {
opline->op2.u.constant.type = IS_LONG;
opline->op2.u.constant.value.lval = 1;
INIT_PZVAL(&opline->op2.u.constant);
opline->op2.op_type = IS_CONST;
}
}
void do_switch_cond(znode *cond CLS_DC)
{
zend_switch_entry switch_entry;
zend_op *opline = &CG(active_op_array)->opcodes[CG(active_op_array)->last-1];
switch_entry.cond = *cond;
switch_entry.default_case = -1;
switch_entry.control_var = -1;
zend_stack_push(&CG(switch_cond_stack), (void *) &switch_entry, sizeof(switch_entry));
if (opline->result.op_type == IS_VAR) {
opline->result.u.EA.type |= EXT_TYPE_UNUSED;
}
do_begin_loop(CLS_C);
INC_BPC(CG(active_op_array));
}
void do_switch_end(znode *case_list CLS_DC)
{
zend_op *opline;
zend_switch_entry *switch_entry_ptr;
zend_stack_top(&CG(switch_cond_stack), (void **) &switch_entry_ptr);
if (case_list->u.opline_num != -1) { /* empty switch */
int next_op_number = get_next_op_number(CG(active_op_array));
CG(active_op_array)->opcodes[case_list->u.opline_num].op1.u.opline_num = next_op_number;
}
/* add code to jmp to default case */
if (switch_entry_ptr->default_case != -1) {
opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_JMPZ;
opline->op1.op_type = IS_TMP_VAR;
opline->op1.u.var = switch_entry_ptr->control_var;
opline->op2.u.opline_num = switch_entry_ptr->default_case;
SET_UNUSED(opline->op2);
}
/* remember break/continue loop information */
CG(active_op_array)->brk_cont_array[CG(active_op_array)->current_brk_cont].cont = CG(active_op_array)->brk_cont_array[CG(active_op_array)->current_brk_cont].brk = get_next_op_number(CG(active_op_array));
CG(active_op_array)->current_brk_cont = CG(active_op_array)->brk_cont_array[CG(active_op_array)->current_brk_cont].parent;
/* emit free for the switch condition*/
opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_SWITCH_FREE;
opline->op1 = switch_entry_ptr->cond;
SET_UNUSED(opline->op2);
if (switch_entry_ptr->cond.op_type == IS_CONST) {
zval_dtor(&switch_entry_ptr->cond.u.constant);
}
zend_stack_del_top(&CG(switch_cond_stack));
DEC_BPC(CG(active_op_array));
}
void do_case_before_statement(znode *case_list, znode *case_token, znode *case_expr CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
int next_op_number;
zend_switch_entry *switch_entry_ptr;
znode result;
zend_stack_top(&CG(switch_cond_stack), (void **) &switch_entry_ptr);
opline->opcode = ZEND_CASE;
if (switch_entry_ptr->control_var==-1) {
switch_entry_ptr->control_var = get_temporary_variable(CG(active_op_array));
}
opline->result.u.var = switch_entry_ptr->control_var;
opline->result.op_type = IS_TMP_VAR;
opline->op1 = switch_entry_ptr->cond;
opline->op2 = *case_expr;
if (opline->op1.op_type == IS_CONST) {
zval_copy_ctor(&opline->op1.u.constant);
}
result = opline->result;
next_op_number = get_next_op_number(CG(active_op_array));
opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_JMPZ;
opline->op1 = result;
SET_UNUSED(opline->op2);
case_token->u.opline_num = next_op_number;
if (case_list->u.opline_num==-1) {
return;
}
next_op_number = get_next_op_number(CG(active_op_array));
CG(active_op_array)->opcodes[case_list->u.opline_num].op1.u.opline_num = next_op_number;
}
void do_case_after_statement(znode *result, znode *case_token CLS_DC)
{
int next_op_number = get_next_op_number(CG(active_op_array));
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_JMP;
SET_UNUSED(opline->op1);
SET_UNUSED(opline->op2);
result->u.opline_num = next_op_number;
switch (CG(active_op_array)->opcodes[case_token->u.opline_num].opcode) {
case ZEND_JMP:
CG(active_op_array)->opcodes[case_token->u.opline_num].op1.u.opline_num = get_next_op_number(CG(active_op_array));
break;
case ZEND_JMPZ:
CG(active_op_array)->opcodes[case_token->u.opline_num].op2.u.opline_num = get_next_op_number(CG(active_op_array));
break;
}
}
void do_default_before_statement(znode *case_list, znode *default_token CLS_DC)
{
int next_op_number = get_next_op_number(CG(active_op_array));
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
zend_switch_entry *switch_entry_ptr;
zend_stack_top(&CG(switch_cond_stack), (void **) &switch_entry_ptr);
opline->opcode = ZEND_JMP;
SET_UNUSED(opline->op1);
SET_UNUSED(opline->op2);
default_token->u.opline_num = next_op_number;
next_op_number = get_next_op_number(CG(active_op_array));
opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_BOOL;
if (switch_entry_ptr->control_var==-1) {
switch_entry_ptr->control_var = get_temporary_variable(CG(active_op_array));
}
opline->result.u.var = switch_entry_ptr->control_var;
opline->result.op_type = IS_TMP_VAR;
opline->op1.op_type = IS_CONST;
opline->op1.u.constant.type = IS_LONG;
opline->op1.u.constant.value.lval = 1;
INIT_PZVAL(&opline->op1.u.constant);
SET_UNUSED(opline->op2);
switch_entry_ptr->default_case = next_op_number;
next_op_number = get_next_op_number(CG(active_op_array));
if (case_list->u.opline_num==-1) {
return;
}
CG(active_op_array)->opcodes[case_list->u.opline_num].op1.u.opline_num = next_op_number;
}
void do_begin_class_declaration(znode *class_name, znode *parent_class_name CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
int runtime_inheritence = 0;
if (CG(active_class_entry)) {
zend_error(E_COMPILE_ERROR, "Class declarations may not be nested");
return;
}
CG(class_entry).type = ZEND_USER_CLASS;
CG(class_entry).name = class_name->u.constant.value.str.val;
CG(class_entry).name_length = class_name->u.constant.value.str.len;
CG(class_entry).refcount = (int *) emalloc(sizeof(int));
*CG(class_entry).refcount = 1;
zend_str_tolower(CG(class_entry).name, CG(class_entry).name_length);
zend_hash_init(&CG(class_entry).function_table, 10, NULL, ZEND_FUNCTION_DTOR, 0);
zend_hash_init(&CG(class_entry).default_properties, 10, NULL, PVAL_PTR_DTOR, 0);
/* code for inheritance from parent class */
if (parent_class_name) {
zend_class_entry *parent_class;
zend_function tmp_zend_function;
zval *tmp;
zend_str_tolower(parent_class_name->u.constant.value.str.val, parent_class_name->u.constant.value.str.len);
if (zend_hash_find(CG(class_table), parent_class_name->u.constant.value.str.val, parent_class_name->u.constant.value.str.len+1, (void **) &parent_class)==SUCCESS) {
/* copy functions */
zend_hash_copy(&CG(class_entry).function_table, &parent_class->function_table, (void (*)(void *)) function_add_ref, &tmp_zend_function, sizeof(zend_function));
/* copy default properties */
zend_hash_copy(&CG(class_entry).default_properties, &parent_class->default_properties, (void (*)(void *)) zval_add_ref, (void *) &tmp, sizeof(zval *));
CG(class_entry).parent = parent_class;
zval_dtor(&parent_class_name->u.constant);
} else {
runtime_inheritence = 1;
CG(class_entry).parent = NULL;
}
} else {
CG(class_entry).parent = NULL;
}
CG(class_entry).handle_function_call = NULL;
CG(class_entry).handle_property_set = NULL;
CG(class_entry).handle_property_get = NULL;
opline->opcode = ZEND_DECLARE_FUNCTION_OR_CLASS;
opline->op1.op_type = IS_CONST;
opline->op1.u.constant.type = IS_LONG;
opline->op1.u.constant.value.lval = zend_hash_next_free_element(CG(class_table));
opline->op2.op_type = IS_CONST;
opline->op2.u.constant.type = IS_STRING;
if (runtime_inheritence) {
char *full_class_name;
opline->op2.u.constant.value.str.len = parent_class_name->u.constant.value.str.len+1+CG(class_entry).name_length;
full_class_name = opline->op2.u.constant.value.str.val = (char *) emalloc(opline->op2.u.constant.value.str.len+1);
memcpy(full_class_name, parent_class_name->u.constant.value.str.val, parent_class_name->u.constant.value.str.len);
full_class_name += parent_class_name->u.constant.value.str.len;
full_class_name[0] = ':';
full_class_name++;
memcpy(full_class_name, CG(class_entry).name, CG(class_entry).name_length);
zval_dtor(&parent_class_name->u.constant);
full_class_name += CG(class_entry).name_length;
full_class_name[0] = 0;
opline->extended_value = ZEND_DECLARE_INHERITED_CLASS;
} else {
opline->op2.u.constant.value.str.val = estrndup(CG(class_entry).name, CG(class_entry).name_length);
opline->op2.u.constant.value.str.len = CG(class_entry).name_length;
opline->extended_value = ZEND_DECLARE_CLASS;
}
zend_hash_next_index_insert(CG(class_table), &CG(class_entry), sizeof(zend_class_entry), (void **) &CG(active_class_entry));
}
void do_end_class_declaration(CLS_D)
{
do_inherit_parent_constructor(CG(active_class_entry));
CG(active_class_entry) = NULL;
}
void do_declare_property(znode *var_name, znode *value CLS_DC)
{
if (value) {
zval *property = (zval *) emalloc(sizeof(zval));
*property = value->u.constant;
zend_hash_update(&CG(active_class_entry)->default_properties, var_name->u.constant.value.str.val, var_name->u.constant.value.str.len+1, &property, sizeof(zval *), NULL);
}
FREE_PNODE(var_name);
}
void do_fetch_property(znode *result, znode *object, znode *property CLS_DC)
{
int next_op_number = get_next_op_number(CG(active_op_array));
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
zend_llist *fetch_list_ptr;
opline->opcode = ZEND_FETCH_OBJ_W; /* the backpatching routine assumes W */
opline->result.op_type = IS_VAR;
opline->result.u.EA.type = 0;
opline->result.u.var = get_temporary_variable(CG(active_op_array));
opline->op1 = *object;
opline->op2 = *property;
*result = opline->result;
zend_stack_top(&CG(bp_stack), (void **) &fetch_list_ptr);
zend_llist_add_element(fetch_list_ptr, &next_op_number);
}
void do_push_object(znode *object CLS_DC)
{
zend_stack_push(&CG(object_stack), object, sizeof(znode));
}
void do_pop_object(znode *object CLS_DC)
{
znode *tmp;
zend_stack_top(&CG(object_stack), (void **) &tmp);
*object = *tmp;
zend_stack_del_top(&CG(object_stack));
}
void do_begin_new_object(znode *new_token, znode *class_name CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
unsigned char *ptr = NULL;
opline->opcode = ZEND_NEW;
opline->result.op_type = IS_TMP_VAR;
opline->result.u.var = get_temporary_variable(CG(active_op_array));
opline->op1 = *class_name;
SET_UNUSED(opline->op2);
/* *result = opline->result;
do_assign(result, variable, &opline->result CLS_CC); */
new_token->u.opline_num = get_next_op_number(CG(active_op_array));
opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_JMP_NO_CTOR;
opline->op1 = (opline-1)->result;
SET_UNUSED(opline->op2);
if (class_name->op_type == IS_CONST) {
zval_copy_ctor(&class_name->u.constant);
}
opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_INIT_FCALL_BY_NAME;
opline->op1 = (opline-2)->result;
opline->op2 = *class_name;
opline->extended_value = ZEND_MEMBER_FUNC_CALL | ZEND_CTOR_CALL;
zend_stack_push(&CG(function_call_stack), (void *) &ptr, sizeof(unsigned char *));
}
void do_end_new_object(znode *result, znode *class_name, znode *new_token, znode *argument_list CLS_DC)
{
znode ctor_result;
if (class_name->op_type == IS_CONST) {
zval_copy_ctor(&class_name->u.constant);
}
do_end_function_call(class_name, &ctor_result, argument_list, 1, 0 CLS_CC);
do_free(&ctor_result CLS_CC);
CG(active_op_array)->opcodes[new_token->u.opline_num].op2.u.opline_num = get_next_op_number(CG(active_op_array));
*result = CG(active_op_array)->opcodes[new_token->u.opline_num].op1;
}
void do_fetch_constant(znode *result, znode *constant_name, int mode CLS_DC)
{
switch (mode) {
case ZEND_CT:
*result = *constant_name;
result->u.constant.type = IS_CONSTANT;
break;
case ZEND_RT: {
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_FETCH_CONSTANT;
opline->result.op_type = IS_TMP_VAR;
opline->result.u.var = get_temporary_variable(CG(active_op_array));
opline->op1 = *constant_name;
*result = opline->result;
SET_UNUSED(opline->op2);
}
break;
}
}
void do_shell_exec(znode *result, znode *cmd CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
switch (cmd->op_type) {
case IS_TMP_VAR:
opline->opcode = ZEND_SEND_VAL;
break;
default:
opline->opcode = ZEND_SEND_VAR;
break;
}
opline->op1 = *cmd;
opline->op2.u.opline_num = 0;
opline->extended_value = ZEND_DO_FCALL;
SET_UNUSED(opline->op2);
opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_DO_FCALL;
opline->result.u.var = get_temporary_variable(CG(active_op_array));
opline->result.op_type = IS_TMP_VAR;
opline->op1.u.constant.value.str.val = estrndup("shell_exec",sizeof("shell_exec")-1);
opline->op1.u.constant.value.str.len = sizeof("shell_exec")-1;
INIT_PZVAL(&opline->op1.u.constant);
opline->op1.u.constant.type = IS_STRING;
opline->op1.op_type = IS_CONST;
opline->extended_value = 1;
SET_UNUSED(opline->op2);
*result = opline->result;
}
void do_init_array(znode *result, znode *expr, znode *offset CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_INIT_ARRAY;
opline->result.u.var = get_temporary_variable(CG(active_op_array));
opline->result.op_type = IS_TMP_VAR;
*result = opline->result;
if (expr) {
opline->op1 = *expr;
if (offset) {
opline->op2 = *offset;
} else {
SET_UNUSED(opline->op2);
}
} else {
SET_UNUSED(opline->op1);
SET_UNUSED(opline->op2);
}
}
void do_add_array_element(znode *result, znode *expr, znode *offset CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_ADD_ARRAY_ELEMENT;
opline->result = *result;
opline->op1 = *expr;
if (offset) {
opline->op2 = *offset;
} else {
SET_UNUSED(opline->op2);
}
}
void do_add_static_array_element(znode *result, znode *offset, znode *expr)
{
zval *element = (zval *) emalloc(sizeof(zval));
*element = expr->u.constant;
if (offset) {
switch (offset->u.constant.type) {
case IS_STRING:
zend_hash_update(result->u.constant.value.ht, offset->u.constant.value.str.val, offset->u.constant.value.str.len+1, &element, sizeof(zval *), NULL);
zval_dtor(&offset->u.constant);
break;
case IS_LONG:
zend_hash_index_update(result->u.constant.value.ht, offset->u.constant.value.lval, &element, sizeof(zval *), NULL);
break;
}
} else {
zend_hash_next_index_insert(result->u.constant.value.ht, &element, sizeof(zval *), NULL);
}
}
void do_add_list_element(znode *element CLS_DC)
{
list_llist_element lle;
if (element) {
lle.var = *element;
zend_llist_copy(&lle.dimensions, &CG(dimension_llist));
zend_llist_add_element(&CG(list_llist), &lle);
}
(*((int *)CG(dimension_llist).tail->data))++;
}
void do_new_list_begin(CLS_D)
{
int current_dimension = 0;
zend_llist_add_element(&CG(dimension_llist), &current_dimension);
}
void do_new_list_end(CLS_D)
{
zend_llist_remove_tail(&CG(dimension_llist));
(*((int *)CG(dimension_llist).tail->data))++;
}
void do_list_init(CLS_D)
{
zend_llist_init(&CG(list_llist), sizeof(list_llist_element), NULL, 0);
zend_llist_init(&CG(dimension_llist), sizeof(int), NULL, 0);
do_new_list_begin(CLS_C);
}
void do_list_end(znode *result, znode *expr CLS_DC)
{
zend_llist_element *le;
zend_llist_element *dimension;
zend_op *opline;
znode last_container;
le = CG(list_llist).head;
while (le) {
zend_llist *tmp_dimension_llist = &((list_llist_element *)le->data)->dimensions;
dimension = tmp_dimension_llist->head;
while (dimension) {
opline = get_next_op(CG(active_op_array) CLS_CC);
if (dimension == tmp_dimension_llist->head) { /* first */
last_container = *expr;
switch(expr->op_type) {
case IS_VAR:
opline->opcode = ZEND_FETCH_DIM_R;
break;
case IS_TMP_VAR:
case IS_CONST: /* fetch_dim_tmp_var will handle this bogus fetch */
opline->opcode = ZEND_FETCH_DIM_TMP_VAR;
break;
}
} else {
opline->opcode = ZEND_FETCH_DIM_R;
}
opline->result.op_type = IS_VAR;
opline->result.u.EA.type = 0;
opline->result.u.var = get_temporary_variable(CG(active_op_array));
opline->op1 = last_container;
opline->op2.op_type = IS_CONST;
opline->op2.u.constant.type = IS_LONG;
opline->op2.u.constant.value.lval = *((int *) dimension->data);
INIT_PZVAL(&opline->op2.u.constant);
if (le == CG(list_llist).tail) {
opline->extended_value = ZEND_FETCH_STANDARD;
} else {
opline->extended_value = ZEND_FETCH_ADD_LOCK;
}
last_container = opline->result;
dimension = dimension->next;
}
((list_llist_element *) le->data)->value = last_container;
zend_llist_destroy(&((list_llist_element *) le->data)->dimensions);
le = le->next;
}
le = CG(list_llist).head;
while (le) {
do_assign(result, &((list_llist_element *) le->data)->var, &((list_llist_element *) le->data)->value CLS_CC);
CG(active_op_array)->opcodes[CG(active_op_array)->last-1].result.u.EA.type |= EXT_TYPE_UNUSED;
le = le->next;
}
zend_llist_destroy(&CG(dimension_llist));
zend_llist_destroy(&CG(list_llist));
*result = *expr;
}
void do_fetch_global_or_static_variable(znode *varname, znode *static_assignment, int fetch_type CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
znode lval;
if (fetch_type==ZEND_FETCH_STATIC && static_assignment) {
zval *tmp = (zval *) emalloc(sizeof(zval));
convert_to_string(&varname->u.constant);
*tmp = static_assignment->u.constant;
if (!CG(active_op_array)->static_variables) {
CG(active_op_array)->static_variables = (HashTable *) emalloc(sizeof(HashTable));
zend_hash_init(CG(active_op_array)->static_variables, 2, NULL, PVAL_PTR_DTOR, 0);
}
zend_hash_update_ptr(CG(active_op_array)->static_variables, varname->u.constant.value.str.val, varname->u.constant.value.str.len+1, tmp, sizeof(zval *), NULL);
}
opline->opcode = ZEND_FETCH_W; /* the default mode must be Write, since fetch_simple_variable() is used to define function arguments */
opline->result.op_type = IS_VAR;
opline->result.u.EA.type = 0;
opline->result.u.var = get_temporary_variable(CG(active_op_array));
opline->op1 = *varname;
SET_UNUSED(opline->op2);
opline->op2.u.fetch_type = fetch_type;
if (varname->op_type == IS_CONST) {
zval_copy_ctor(&varname->u.constant);
}
fetch_simple_variable(&lval, varname, 0 CLS_CC); /* Relies on the fact that the default fetch is BP_VAR_W */
do_assign_ref(NULL, &lval, &opline->result CLS_CC);
CG(active_op_array)->opcodes[CG(active_op_array)->last-1].result.u.EA.type |= EXT_TYPE_UNUSED;
}
void do_cast(znode *result, znode *expr, int type CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_CAST;
opline->result.op_type = IS_TMP_VAR;
opline->result.u.var = get_temporary_variable(CG(active_op_array));
opline->op1 = *expr;
SET_UNUSED(opline->op2);
opline->op2.u.constant.type = type;
*result = opline->result;
}
void do_include_or_eval(int type, znode *result, znode *op1 CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_INCLUDE_OR_EVAL;
opline->result.op_type = IS_TMP_VAR;
opline->result.u.var = get_temporary_variable(CG(active_op_array));
opline->op1 = *op1;
SET_UNUSED(opline->op2);
opline->op2.u.constant.value.lval = type;
*result = opline->result;
}
void do_indirect_references(znode *result, znode *num_references, znode *variable CLS_DC)
{
int i;
for (i=1; i<=num_references->u.constant.value.lval; i++) {
fetch_simple_variable(result, variable, 1 CLS_CC);
*variable = *result;
}
}
void do_unset(znode *variable CLS_DC)
{
zend_op *last_op;
last_op = &CG(active_op_array)->opcodes[get_next_op_number(CG(active_op_array))-1];
switch (last_op->opcode) {
case ZEND_FETCH_R:
last_op->opcode = ZEND_UNSET_VAR;
break;
case ZEND_FETCH_DIM_R:
case ZEND_FETCH_OBJ_R:
last_op->opcode = ZEND_UNSET_DIM_OBJ;
break;
}
}
void do_isset_or_isempty(int type, znode *result, znode *variable CLS_DC)
{
zend_op *opline;
do_end_variable_parse(BP_VAR_IS CLS_CC);
opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_ISSET_ISEMPTY;
opline->result.op_type = IS_TMP_VAR;
opline->result.u.var = get_temporary_variable(CG(active_op_array));
opline->op1 = *variable;
opline->op2.u.constant.value.lval = type;
SET_UNUSED(opline->op2);
*result = opline->result;
}
void do_foreach_begin(znode *foreach_token, znode *array, znode *open_brackets_token, znode *as_token CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
/* Preform array reset */
opline->opcode = ZEND_FE_RESET;
opline->result.op_type = IS_TMP_VAR;
opline->result.u.var = get_temporary_variable(CG(active_op_array));
opline->op1 = *array;
SET_UNUSED(opline->op2);
*open_brackets_token = opline->result;
/* save the location of the beginning of the loop (array fetching) */
foreach_token->u.opline_num = get_next_op_number(CG(active_op_array));
opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_FE_FETCH;
opline->result.op_type = IS_TMP_VAR;
opline->result.u.var = get_temporary_variable(CG(active_op_array));
opline->op1 = *open_brackets_token;
SET_UNUSED(opline->op2);
*as_token = opline->result;
}
void do_foreach_cont(znode *value, znode *key, znode *as_token CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
znode result_value, result_key, dummy;
if (key->op_type != IS_UNUSED) {
znode *tmp;
/* switch between the key and value... */
tmp = key;
key = value;
value = tmp;
}
opline->opcode = ZEND_FETCH_DIM_TMP_VAR;
opline->result.op_type = IS_VAR;
opline->result.u.EA.type = 0;
opline->result.u.opline_num = get_temporary_variable(CG(active_op_array));
opline->op1 = *as_token;
opline->op2.op_type = IS_CONST;
opline->op2.u.constant.type = IS_LONG;
opline->op2.u.constant.value.lval = 0;
opline->extended_value = ZEND_FETCH_STANDARD; /* ignored in fetch_dim_tmp_var, but what the hell. */
result_value = opline->result;
if (key->op_type != IS_UNUSED) {
opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_FETCH_DIM_TMP_VAR;
opline->result.op_type = IS_VAR;
opline->result.u.EA.type = 0;
opline->result.u.opline_num = get_temporary_variable(CG(active_op_array));
opline->op1 = *as_token;
opline->op2.op_type = IS_CONST;
opline->op2.u.constant.type = IS_LONG;
opline->op2.u.constant.value.lval = 1;
opline->extended_value = ZEND_FETCH_STANDARD; /* ignored in fetch_dim_tmp_var, but what the hell. */
result_key = opline->result;
}
do_assign(&dummy, value, &result_value CLS_CC);
CG(active_op_array)->opcodes[CG(active_op_array)->last-1].result.u.EA.type |= EXT_TYPE_UNUSED;
if (key->op_type != IS_UNUSED) {
do_assign(&dummy, key, &result_key CLS_CC);
CG(active_op_array)->opcodes[CG(active_op_array)->last-1].result.u.EA.type |= EXT_TYPE_UNUSED;
}
do_free(as_token CLS_CC);
do_begin_loop(CLS_C);
INC_BPC(CG(active_op_array));
}
void do_foreach_end(znode *foreach_token, znode *open_brackets_token CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_JMP;
opline->op1.u.opline_num = foreach_token->u.opline_num;
SET_UNUSED(opline->op2);
CG(active_op_array)->opcodes[foreach_token->u.opline_num].op2.u.opline_num = get_next_op_number(CG(active_op_array));
do_end_loop(foreach_token->u.opline_num CLS_CC);
do_free(open_brackets_token CLS_CC);
DEC_BPC(CG(active_op_array));
}
void do_end_heredoc(CLS_D)
{
int opline_num = get_next_op_number(CG(active_op_array))-1;
zend_op *opline = &CG(active_op_array)->opcodes[opline_num];
if (opline->opcode != ZEND_ADD_STRING) {
return;
}
opline->op2.u.constant.value.str.val[(opline->op2.u.constant.value.str.len--)-1] = 0;
if (opline->op2.u.constant.value.str.len>0) {
if (opline->op2.u.constant.value.str.val[opline->op2.u.constant.value.str.len-1]=='\r') {
opline->op2.u.constant.value.str.val[(opline->op2.u.constant.value.str.len--)-1] = 0;
}
}
}
void do_exit(znode *result, znode *message CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_EXIT;
opline->op1 = *message;
SET_UNUSED(opline->op2);
result->op_type = IS_CONST;
result->u.constant.type = IS_BOOL;
result->u.constant.value.lval = 1;
}
void do_begin_silence(znode *strudel_token CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_BEGIN_SILENCE;
opline->result.op_type = IS_TMP_VAR;
opline->result.u.var = get_temporary_variable(CG(active_op_array));
SET_UNUSED(opline->op1);
SET_UNUSED(opline->op2);
*strudel_token = opline->result;
}
void do_end_silence(znode *strudel_token CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_END_SILENCE;
opline->op1 = *strudel_token;
SET_UNUSED(opline->op2);
}
void do_begin_qm_op(znode *cond, znode *qm_token CLS_DC)
{
int jmpz_op_number = get_next_op_number(CG(active_op_array));
zend_op *opline;
opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_JMPZ;
opline->op1 = *cond;
SET_UNUSED(opline->op2);
opline->op2.u.opline_num = jmpz_op_number;
*qm_token = opline->op2;
INC_BPC(CG(active_op_array));
}
void do_qm_true(znode *true_value, znode *qm_token, znode *colon_token CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
CG(active_op_array)->opcodes[qm_token->u.opline_num].op2.u.opline_num = get_next_op_number(CG(active_op_array))+1; /* jmp over the ZEND_JMP */
opline->opcode = ZEND_QM_ASSIGN;
opline->result.op_type = IS_TMP_VAR;
opline->result.u.var = get_temporary_variable(CG(active_op_array));
opline->op1 = *true_value;
SET_UNUSED(opline->op2);
*qm_token = opline->result;
colon_token->u.opline_num = get_next_op_number(CG(active_op_array));
opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_JMP;
SET_UNUSED(opline->op1);
SET_UNUSED(opline->op2);
}
void do_qm_false(znode *result, znode *false_value, znode *qm_token, znode *colon_token CLS_DC)
{
zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_QM_ASSIGN;
opline->result = *qm_token;
opline->op1 = *false_value;
SET_UNUSED(opline->op2);
CG(active_op_array)->opcodes[colon_token->u.opline_num].op1.u.opline_num = get_next_op_number(CG(active_op_array));
*result = opline->result;
DEC_BPC(CG(active_op_array));
}
void do_extended_info(CLS_D)
{
zend_op *opline;
if (!CG(extended_info)) {
return;
}
opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_EXT_STMT;
SET_UNUSED(opline->op1);
SET_UNUSED(opline->op2);
}
void do_extended_fcall_begin(CLS_D)
{
zend_op *opline;
if (!CG(extended_info)) {
return;
}
opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_EXT_FCALL_BEGIN;
SET_UNUSED(opline->op1);
SET_UNUSED(opline->op2);
}
void do_extended_fcall_end(CLS_D)
{
zend_op *opline;
if (!CG(extended_info)) {
return;
}
opline = get_next_op(CG(active_op_array) CLS_CC);
opline->opcode = ZEND_EXT_FCALL_END;
SET_UNUSED(opline->op1);
SET_UNUSED(opline->op2);
}
int zendlex(znode *zendlval CLS_DC)
{
int retval;
zendlval->u.constant.type = IS_LONG;
retval = lex_scan(&zendlval->u.constant CLS_CC);
switch(retval) {
case T_COMMENT:
case T_OPEN_TAG:
case T_WHITESPACE:
case T_PHP_TRACK_VARS:
retval = zendlex(zendlval CLS_CC);
break;
case T_CLOSE_TAG:
retval = ';'; /* implicit ; */
break;
case T_OPEN_TAG_WITH_ECHO:
retval = T_ECHO;
break;
}
INIT_PZVAL(&zendlval->u.constant);
zendlval->op_type = IS_CONST;
return retval;
}
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