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4b27569dc3
php-src/Zend/zend_exceptions.c
Xinchen Hui 4b27569dc3 codes standard
2015-04-14 19:32:01 +08:00

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/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 1998-2015 Zend Technologies Ltd. (http://www.zend.com) |
+----------------------------------------------------------------------+
| This source file is subject to version 2.00 of the Zend license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.zend.com/license/2_00.txt. |
| If you did not receive a copy of the Zend license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@zend.com so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andi Gutmans <andi@zend.com> |
| Marcus Boerger <helly@php.net> |
| Sterling Hughes <sterling@php.net> |
| Zeev Suraski <zeev@zend.com> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#include "zend.h"
#include "zend_API.h"
#include "zend_builtin_functions.h"
#include "zend_interfaces.h"
#include "zend_exceptions.h"
#include "zend_vm.h"
#include "zend_dtrace.h"
static zend_class_entry *default_exception_ce;
static zend_class_entry *error_exception_ce;
static zend_object_handlers default_exception_handlers;
ZEND_API void (*zend_throw_exception_hook)(zval *ex TSRMLS_DC);
void zend_exception_set_previous(zval *exception, zval *add_previous TSRMLS_DC)
{
zval *previous;
if (exception == add_previous || !add_previous || !exception) {
return;
}
if (Z_TYPE_P(add_previous) != IS_OBJECT && !instanceof_function(Z_OBJCE_P(add_previous), default_exception_ce TSRMLS_CC)) {
zend_error(E_ERROR, "Cannot set non exception as previous exception");
return;
}
while (exception && exception != add_previous && Z_OBJ_HANDLE_P(exception) != Z_OBJ_HANDLE_P(add_previous)) {
previous = zend_read_property(default_exception_ce, exception, "previous", sizeof("previous")-1, 1 TSRMLS_CC);
if (Z_TYPE_P(previous) == IS_NULL) {
zend_update_property(default_exception_ce, exception, "previous", sizeof("previous")-1, add_previous TSRMLS_CC);
Z_DELREF_P(add_previous);
return;
}
exception = previous;
}
}
void zend_exception_save(TSRMLS_D) /* {{{ */
{
if (EG(prev_exception)) {
zend_exception_set_previous(EG(exception), EG(prev_exception) TSRMLS_CC);
}
if (EG(exception)) {
EG(prev_exception) = EG(exception);
}
EG(exception) = NULL;
}
/* }}} */
void zend_exception_restore(TSRMLS_D) /* {{{ */
{
if (EG(prev_exception)) {
if (EG(exception)) {
zend_exception_set_previous(EG(exception), EG(prev_exception) TSRMLS_CC);
} else {
EG(exception) = EG(prev_exception);
}
EG(prev_exception) = NULL;
}
}
/* }}} */
void zend_throw_exception_internal(zval *exception TSRMLS_DC) /* {{{ */
{
#ifdef HAVE_DTRACE
if (DTRACE_EXCEPTION_THROWN_ENABLED()) {
const char *classname;
zend_uint name_len;
if (exception != NULL) {
zend_get_object_classname(exception, &classname, &name_len TSRMLS_CC);
DTRACE_EXCEPTION_THROWN((char *)classname);
} else {
DTRACE_EXCEPTION_THROWN(NULL);
}
}
#endif /* HAVE_DTRACE */
if (exception != NULL) {
zval *previous = EG(exception);
zend_exception_set_previous(exception, EG(exception) TSRMLS_CC);
EG(exception) = exception;
if (previous) {
return;
}
}
if (!EG(current_execute_data)) {
if(EG(exception)) {
zend_exception_error(EG(exception), E_ERROR TSRMLS_CC);
}
zend_error(E_ERROR, "Exception thrown without a stack frame");
}
if (zend_throw_exception_hook) {
zend_throw_exception_hook(exception TSRMLS_CC);
}
if (EG(current_execute_data)->opline == NULL ||
(EG(current_execute_data)->opline+1)->opcode == ZEND_HANDLE_EXCEPTION) {
/* no need to rethrow the exception */
return;
}
EG(opline_before_exception) = EG(current_execute_data)->opline;
EG(current_execute_data)->opline = EG(exception_op);
}
/* }}} */
ZEND_API void zend_clear_exception(TSRMLS_D) /* {{{ */
{
if (EG(prev_exception)) {
zval_ptr_dtor(&EG(prev_exception));
EG(prev_exception) = NULL;
}
if (!EG(exception)) {
return;
}
zval_ptr_dtor(&EG(exception));
EG(exception) = NULL;
EG(current_execute_data)->opline = EG(opline_before_exception);
#if ZEND_DEBUG
EG(opline_before_exception) = NULL;
#endif
}
/* }}} */
static zend_object_value zend_default_exception_new_ex(zend_class_entry *class_type, int skip_top_traces TSRMLS_DC) /* {{{ */
{
zval obj;
zend_object *object;
zval *trace;
Z_OBJVAL(obj) = zend_objects_new(&object, class_type TSRMLS_CC);
Z_OBJ_HT(obj) = &default_exception_handlers;
object_properties_init(object, class_type);
ALLOC_ZVAL(trace);
Z_UNSET_ISREF_P(trace);
Z_SET_REFCOUNT_P(trace, 0);
zend_fetch_debug_backtrace(trace, skip_top_traces, 0, 0 TSRMLS_CC);
zend_update_property_string(default_exception_ce, &obj, "file", sizeof("file")-1, zend_get_executed_filename(TSRMLS_C) TSRMLS_CC);
zend_update_property_long(default_exception_ce, &obj, "line", sizeof("line")-1, zend_get_executed_lineno(TSRMLS_C) TSRMLS_CC);
zend_update_property(default_exception_ce, &obj, "trace", sizeof("trace")-1, trace TSRMLS_CC);
return Z_OBJVAL(obj);
}
/* }}} */
static zend_object_value zend_default_exception_new(zend_class_entry *class_type TSRMLS_DC) /* {{{ */
{
return zend_default_exception_new_ex(class_type, 0 TSRMLS_CC);
}
/* }}} */
static zend_object_value zend_error_exception_new(zend_class_entry *class_type TSRMLS_DC) /* {{{ */
{
return zend_default_exception_new_ex(class_type, 2 TSRMLS_CC);
}
/* }}} */
/* {{{ proto Exception Exception::__clone()
Clone the exception object */
ZEND_METHOD(exception, __clone)
{
/* Should never be executable */
zend_throw_exception(NULL, "Cannot clone object using __clone()", 0 TSRMLS_CC);
}
/* }}} */
/* {{{ proto Exception::__construct(string message, int code [, Exception previous])
Exception constructor */
ZEND_METHOD(exception, __construct)
{
char *message = NULL;
long code = 0;
zval *object, *previous = NULL;
int argc = ZEND_NUM_ARGS(), message_len;
if (zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET, argc TSRMLS_CC, "|slO!", &message, &message_len, &code, &previous, default_exception_ce) == FAILURE) {
zend_error(E_ERROR, "Wrong parameters for Exception([string $exception [, long $code [, Exception $previous = NULL]]])");
}
object = getThis();
if (message) {
zend_update_property_stringl(default_exception_ce, object, "message", sizeof("message")-1, message, message_len TSRMLS_CC);
}
if (code) {
zend_update_property_long(default_exception_ce, object, "code", sizeof("code")-1, code TSRMLS_CC);
}
if (previous) {
zend_update_property(default_exception_ce, object, "previous", sizeof("previous")-1, previous TSRMLS_CC);
}
}
/* }}} */
/* {{{ proto ErrorException::__construct(string message, int code, int severity [, string filename [, int lineno [, Exception previous]]])
ErrorException constructor */
ZEND_METHOD(error_exception, __construct)
{
char *message = NULL, *filename = NULL;
long code = 0, severity = E_ERROR, lineno;
zval *object, *previous = NULL;
int argc = ZEND_NUM_ARGS(), message_len, filename_len;
if (zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET, argc TSRMLS_CC, "|sllslO!", &message, &message_len, &code, &severity, &filename, &filename_len, &lineno, &previous, default_exception_ce) == FAILURE) {
zend_error(E_ERROR, "Wrong parameters for ErrorException([string $exception [, long $code, [ long $severity, [ string $filename, [ long $lineno [, Exception $previous = NULL]]]]]])");
}
object = getThis();
if (message) {
zend_update_property_string(default_exception_ce, object, "message", sizeof("message")-1, message TSRMLS_CC);
}
if (code) {
zend_update_property_long(default_exception_ce, object, "code", sizeof("code")-1, code TSRMLS_CC);
}
if (previous) {
zend_update_property(default_exception_ce, object, "previous", sizeof("previous")-1, previous TSRMLS_CC);
}
zend_update_property_long(default_exception_ce, object, "severity", sizeof("severity")-1, severity TSRMLS_CC);
if (argc >= 4) {
zend_update_property_string(default_exception_ce, object, "file", sizeof("file")-1, filename TSRMLS_CC);
if (argc < 5) {
lineno = 0; /* invalidate lineno */
}
zend_update_property_long(default_exception_ce, object, "line", sizeof("line")-1, lineno TSRMLS_CC);
}
}
/* }}} */
#define DEFAULT_0_PARAMS \
if (zend_parse_parameters_none() == FAILURE) { \
return; \
}
static void _default_exception_get_entry(zval *object, char *name, int name_len, zval *return_value TSRMLS_DC) /* {{{ */
{
zval *value;
value = zend_read_property(default_exception_ce, object, name, name_len, 0 TSRMLS_CC);
*return_value = *value;
zval_copy_ctor(return_value);
INIT_PZVAL(return_value);
}
/* }}} */
/* {{{ proto string Exception::getFile()
Get the file in which the exception occurred */
ZEND_METHOD(exception, getFile)
{
DEFAULT_0_PARAMS;
_default_exception_get_entry(getThis(), "file", sizeof("file")-1, return_value TSRMLS_CC);
}
/* }}} */
/* {{{ proto int Exception::getLine()
Get the line in which the exception occurred */
ZEND_METHOD(exception, getLine)
{
DEFAULT_0_PARAMS;
_default_exception_get_entry(getThis(), "line", sizeof("line")-1, return_value TSRMLS_CC);
}
/* }}} */
/* {{{ proto string Exception::getMessage()
Get the exception message */
ZEND_METHOD(exception, getMessage)
{
DEFAULT_0_PARAMS;
_default_exception_get_entry(getThis(), "message", sizeof("message")-1, return_value TSRMLS_CC);
}
/* }}} */
/* {{{ proto int Exception::getCode()
Get the exception code */
ZEND_METHOD(exception, getCode)
{
DEFAULT_0_PARAMS;
_default_exception_get_entry(getThis(), "code", sizeof("code")-1, return_value TSRMLS_CC);
}
/* }}} */
/* {{{ proto array Exception::getTrace()
Get the stack trace for the location in which the exception occurred */
ZEND_METHOD(exception, getTrace)
{
DEFAULT_0_PARAMS;
_default_exception_get_entry(getThis(), "trace", sizeof("trace")-1, return_value TSRMLS_CC);
}
/* }}} */
/* {{{ proto int ErrorException::getSeverity()
Get the exception severity */
ZEND_METHOD(error_exception, getSeverity)
{
DEFAULT_0_PARAMS;
_default_exception_get_entry(getThis(), "severity", sizeof("severity")-1, return_value TSRMLS_CC);
}
/* }}} */
/* {{{ gettraceasstring() macros */
#define TRACE_APPEND_CHR(chr) \
*str = (char*)erealloc(*str, *len + 1 + 1); \
(*str)[(*len)++] = chr
#define TRACE_APPEND_STRL(val, vallen) \
{ \
int l = vallen; \
*str = (char*)erealloc(*str, *len + l + 1); \
memcpy((*str) + *len, val, l); \
*len += l; \
}
#define TRACE_APPEND_STR(val) \
TRACE_APPEND_STRL(val, sizeof(val)-1)
#define TRACE_APPEND_KEY(key) \
if (zend_hash_find(ht, key, sizeof(key), (void**)&tmp) == SUCCESS) { \
if (Z_TYPE_PP(tmp) != IS_STRING) { \
zend_error(E_WARNING, "Value for %s is no string", key); \
TRACE_APPEND_STR("[unknown]"); \
} else { \
TRACE_APPEND_STRL(Z_STRVAL_PP(tmp), Z_STRLEN_PP(tmp)); \
} \
}
#define TRACE_ARG_APPEND(vallen) \
*str = (char*)erealloc(*str, *len + 1 + vallen); \
memmove((*str) + *len - l_added + 1 + vallen, (*str) + *len - l_added + 1, l_added);
/* }}} */
static int _build_trace_args(zval **arg TSRMLS_DC, int num_args, va_list args, zend_hash_key *hash_key) /* {{{ */
{
char **str;
int *len;
str = va_arg(args, char**);
len = va_arg(args, int*);
/* the trivial way would be to do:
* convert_to_string_ex(arg);
* append it and kill the now tmp arg.
* but that could cause some E_NOTICE and also damn long lines.
*/
switch (Z_TYPE_PP(arg)) {
case IS_NULL:
TRACE_APPEND_STR("NULL, ");
break;
case IS_STRING: {
int l_added;
TRACE_APPEND_CHR('\'');
if (Z_STRLEN_PP(arg) > 15) {
TRACE_APPEND_STRL(Z_STRVAL_PP(arg), 15);
TRACE_APPEND_STR("...', ");
l_added = 15 + 6 + 1; /* +1 because of while (--l_added) */
} else {
l_added = Z_STRLEN_PP(arg);
TRACE_APPEND_STRL(Z_STRVAL_PP(arg), l_added);
TRACE_APPEND_STR("', ");
l_added += 3 + 1;
}
while (--l_added) {
unsigned char chr = (*str)[*len - l_added];
if (chr < 32 || chr == '\\' || chr > 126) {
(*str)[*len - l_added] = '\\';
switch (chr) {
case '\n':
TRACE_ARG_APPEND(1);
(*str)[++(*len) - l_added] = 'n';
break;
case '\r':
TRACE_ARG_APPEND(1);
(*str)[++(*len) - l_added] = 'r';
break;
case '\t':
TRACE_ARG_APPEND(1);
(*str)[++(*len) - l_added] = 't';
break;
case '\f':
TRACE_ARG_APPEND(1);
(*str)[++(*len) - l_added] = 'f';
break;
case '\v':
TRACE_ARG_APPEND(1);
(*str)[++(*len) - l_added] = 'v';
break;
#ifndef PHP_WIN32
case '\e':
#else
case VK_ESCAPE:
#endif
TRACE_ARG_APPEND(1);
(*str)[++(*len) - l_added] = 'e';
break;
case '\\':
TRACE_ARG_APPEND(1);
(*str)[++(*len) - l_added] = '\\';
break;
default:
TRACE_ARG_APPEND(3);
(*str)[*len - l_added + 1] = 'x';
if ((chr >> 4) < 10) {
(*str)[*len - l_added + 2] = (chr >> 4) + '0';
} else {
(*str)[*len - l_added + 2] = (chr >> 4) + 'A' - 10;
}
if (chr % 16 < 10) {
(*str)[*len - l_added + 3] = chr % 16 + '0';
} else {
(*str)[*len - l_added + 3] = chr % 16 + 'A' - 10;
}
*len += 3;
}
}
}
break;
}
case IS_BOOL:
if (Z_LVAL_PP(arg)) {
TRACE_APPEND_STR("true, ");
} else {
TRACE_APPEND_STR("false, ");
}
break;
case IS_RESOURCE:
TRACE_APPEND_STR("Resource id #");
/* break; */
case IS_LONG: {
long lval = Z_LVAL_PP(arg);
char s_tmp[MAX_LENGTH_OF_LONG + 1];
int l_tmp = zend_sprintf(s_tmp, "%ld", lval); /* SAFE */
TRACE_APPEND_STRL(s_tmp, l_tmp);
TRACE_APPEND_STR(", ");
break;
}
case IS_DOUBLE: {
double dval = Z_DVAL_PP(arg);
char *s_tmp;
int l_tmp;
s_tmp = emalloc(MAX_LENGTH_OF_DOUBLE + EG(precision) + 1);
l_tmp = zend_sprintf(s_tmp, "%.*G", (int) EG(precision), dval); /* SAFE */
TRACE_APPEND_STRL(s_tmp, l_tmp);
/* %G already handles removing trailing zeros from the fractional part, yay */
efree(s_tmp);
TRACE_APPEND_STR(", ");
break;
}
case IS_ARRAY:
TRACE_APPEND_STR("Array, ");
break;
case IS_OBJECT: {
const char *class_name;
zend_uint class_name_len;
int dup;
TRACE_APPEND_STR("Object(");
dup = zend_get_object_classname(*arg, &class_name, &class_name_len TSRMLS_CC);
TRACE_APPEND_STRL(class_name, class_name_len);
if(!dup) {
efree((char*)class_name);
}
TRACE_APPEND_STR("), ");
break;
}
default:
break;
}
return ZEND_HASH_APPLY_KEEP;
}
/* }}} */
static int _build_trace_string(zval **frame TSRMLS_DC, int num_args, va_list args, zend_hash_key *hash_key) /* {{{ */
{
char *s_tmp, **str;
int *len, *num;
long line;
HashTable *ht = Z_ARRVAL_PP(frame);
zval **file, **tmp;
if (Z_TYPE_PP(frame) != IS_ARRAY) {
zend_error(E_WARNING, "Expected array for frame %lu", hash_key->h);
return ZEND_HASH_APPLY_KEEP;
}
str = va_arg(args, char**);
len = va_arg(args, int*);
num = va_arg(args, int*);
s_tmp = emalloc(1 + MAX_LENGTH_OF_LONG + 1 + 1);
sprintf(s_tmp, "#%d ", (*num)++);
TRACE_APPEND_STRL(s_tmp, strlen(s_tmp));
efree(s_tmp);
if (zend_hash_find(ht, "file", sizeof("file"), (void**)&file) == SUCCESS) {
if (Z_TYPE_PP(file) != IS_STRING) {
zend_error(E_WARNING, "Function name is no string");
TRACE_APPEND_STR("[unknown function]");
} else{
if (zend_hash_find(ht, "line", sizeof("line"), (void**)&tmp) == SUCCESS) {
if (Z_TYPE_PP(tmp) == IS_LONG) {
line = Z_LVAL_PP(tmp);
} else {
zend_error(E_WARNING, "Line is no long");
line = 0;
}
} else {
line = 0;
}
s_tmp = emalloc(Z_STRLEN_PP(file) + MAX_LENGTH_OF_LONG + 4 + 1);
sprintf(s_tmp, "%s(%ld): ", Z_STRVAL_PP(file), line);
TRACE_APPEND_STRL(s_tmp, strlen(s_tmp));
efree(s_tmp);
}
} else {
TRACE_APPEND_STR("[internal function]: ");
}
TRACE_APPEND_KEY("class");
TRACE_APPEND_KEY("type");
TRACE_APPEND_KEY("function");
TRACE_APPEND_CHR('(');
if (zend_hash_find(ht, "args", sizeof("args"), (void**)&tmp) == SUCCESS) {
if (Z_TYPE_PP(tmp) == IS_ARRAY) {
int last_len = *len;
zend_hash_apply_with_arguments(Z_ARRVAL_PP(tmp) TSRMLS_CC, (apply_func_args_t)_build_trace_args, 2, str, len);
if (last_len != *len) {
*len -= 2; /* remove last ', ' */
}
} else {
zend_error(E_WARNING, "args element is no array");
}
}
TRACE_APPEND_STR(")\n");
return ZEND_HASH_APPLY_KEEP;
}
/* }}} */
/* {{{ proto string Exception::getTraceAsString()
Obtain the backtrace for the exception as a string (instead of an array) */
ZEND_METHOD(exception, getTraceAsString)
{
zval *trace;
char *res, **str, *s_tmp;
int res_len = 0, *len = &res_len, num = 0;
DEFAULT_0_PARAMS;
res = estrdup("");
str = &res;
trace = zend_read_property(default_exception_ce, getThis(), "trace", sizeof("trace")-1, 1 TSRMLS_CC);
if (Z_TYPE_P(trace) != IS_ARRAY) {
RETURN_FALSE;
}
zend_hash_apply_with_arguments(Z_ARRVAL_P(trace) TSRMLS_CC, (apply_func_args_t)_build_trace_string, 3, str, len, &num);
s_tmp = emalloc(1 + MAX_LENGTH_OF_LONG + 7 + 1);
sprintf(s_tmp, "#%d {main}", num);
TRACE_APPEND_STRL(s_tmp, strlen(s_tmp));
efree(s_tmp);
res[res_len] = '\0';
RETURN_STRINGL(res, res_len, 0);
}
/* }}} */
/* {{{ proto string Exception::getPrevious()
Return previous Exception or NULL. */
ZEND_METHOD(exception, getPrevious)
{
zval *previous;
DEFAULT_0_PARAMS;
previous = zend_read_property(default_exception_ce, getThis(), "previous", sizeof("previous")-1, 1 TSRMLS_CC);
RETURN_ZVAL(previous, 1, 0);
}
int zend_spprintf(char **message, int max_len, const char *format, ...) /* {{{ */
{
va_list arg;
int len;
va_start(arg, format);
len = zend_vspprintf(message, max_len, format, arg);
va_end(arg);
return len;
}
/* }}} */
/* {{{ proto string Exception::__toString()
Obtain the string representation of the Exception object */
ZEND_METHOD(exception, __toString)
{
zval message, file, line, *trace, *exception;
char *str, *prev_str;
int len = 0;
zend_fcall_info fci;
zval fname;
DEFAULT_0_PARAMS;
str = estrndup("", 0);
exception = getThis();
ZVAL_STRINGL(&fname, "gettraceasstring", sizeof("gettraceasstring")-1, 1);
while (exception && Z_TYPE_P(exception) == IS_OBJECT) {
prev_str = str;
_default_exception_get_entry(exception, "message", sizeof("message")-1, &message TSRMLS_CC);
_default_exception_get_entry(exception, "file", sizeof("file")-1, &file TSRMLS_CC);
_default_exception_get_entry(exception, "line", sizeof("line")-1, &line TSRMLS_CC);
convert_to_string(&message);
convert_to_string(&file);
convert_to_long(&line);
fci.size = sizeof(fci);
fci.function_table = &Z_OBJCE_P(exception)->function_table;
fci.function_name = &fname;
fci.symbol_table = NULL;
fci.object_ptr = exception;
fci.retval_ptr_ptr = &trace;
fci.param_count = 0;
fci.params = NULL;
fci.no_separation = 1;
zend_call_function(&fci, NULL TSRMLS_CC);
if (Z_TYPE_P(trace) != IS_STRING) {
zval_ptr_dtor(&trace);
trace = NULL;
}
if (Z_STRLEN(message) > 0) {
len = zend_spprintf(&str, 0, "exception '%s' with message '%s' in %s:%ld\nStack trace:\n%s%s%s",
Z_OBJCE_P(exception)->name, Z_STRVAL(message), Z_STRVAL(file), Z_LVAL(line),
(trace && Z_STRLEN_P(trace)) ? Z_STRVAL_P(trace) : "#0 {main}\n",
len ? "\n\nNext " : "", prev_str);
} else {
len = zend_spprintf(&str, 0, "exception '%s' in %s:%ld\nStack trace:\n%s%s%s",
Z_OBJCE_P(exception)->name, Z_STRVAL(file), Z_LVAL(line),
(trace && Z_STRLEN_P(trace)) ? Z_STRVAL_P(trace) : "#0 {main}\n",
len ? "\n\nNext " : "", prev_str);
}
efree(prev_str);
zval_dtor(&message);
zval_dtor(&file);
zval_dtor(&line);
exception = zend_read_property(default_exception_ce, exception, "previous", sizeof("previous")-1, 0 TSRMLS_CC);
if (trace) {
zval_ptr_dtor(&trace);
}
}
zval_dtor(&fname);
/* We store the result in the private property string so we can access
* the result in uncaught exception handlers without memleaks. */
zend_update_property_string(default_exception_ce, getThis(), "string", sizeof("string")-1, str TSRMLS_CC);
RETURN_STRINGL(str, len, 0);
}
/* }}} */
/* {{{ internal structs */
/* All functions that may be used in uncaught exception handlers must be final
* and must not throw exceptions. Otherwise we would need a facility to handle
* such exceptions in that handler.
* Also all getXY() methods are final because thy serve as read only access to
* their corresponding properties, no more, no less. If after all you need to
* override somthing then it is method __toString().
* And never try to change the state of exceptions and never implement anything
* that gives the user anything to accomplish this.
*/
ZEND_BEGIN_ARG_INFO_EX(arginfo_exception___construct, 0, 0, 0)
ZEND_ARG_INFO(0, message)
ZEND_ARG_INFO(0, code)
ZEND_ARG_INFO(0, previous)
ZEND_END_ARG_INFO()
const static zend_function_entry default_exception_functions[] = {
ZEND_ME(exception, __clone, NULL, ZEND_ACC_PRIVATE|ZEND_ACC_FINAL)
ZEND_ME(exception, __construct, arginfo_exception___construct, ZEND_ACC_PUBLIC)
ZEND_ME(exception, getMessage, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_FINAL)
ZEND_ME(exception, getCode, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_FINAL)
ZEND_ME(exception, getFile, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_FINAL)
ZEND_ME(exception, getLine, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_FINAL)
ZEND_ME(exception, getTrace, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_FINAL)
ZEND_ME(exception, getPrevious, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_FINAL)
ZEND_ME(exception, getTraceAsString, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_FINAL)
ZEND_ME(exception, __toString, NULL, 0)
{NULL, NULL, NULL}
};
ZEND_BEGIN_ARG_INFO_EX(arginfo_error_exception___construct, 0, 0, 0)
ZEND_ARG_INFO(0, message)
ZEND_ARG_INFO(0, code)
ZEND_ARG_INFO(0, severity)
ZEND_ARG_INFO(0, filename)
ZEND_ARG_INFO(0, lineno)
ZEND_ARG_INFO(0, previous)
ZEND_END_ARG_INFO()
static const zend_function_entry error_exception_functions[] = {
ZEND_ME(error_exception, __construct, arginfo_error_exception___construct, ZEND_ACC_PUBLIC)
ZEND_ME(error_exception, getSeverity, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_FINAL)
{NULL, NULL, NULL}
};
/* }}} */
void zend_register_default_exception(TSRMLS_D) /* {{{ */
{
zend_class_entry ce;
INIT_CLASS_ENTRY(ce, "Exception", default_exception_functions);
default_exception_ce = zend_register_internal_class(&ce TSRMLS_CC);
default_exception_ce->create_object = zend_default_exception_new;
memcpy(&default_exception_handlers, zend_get_std_object_handlers(), sizeof(zend_object_handlers));
default_exception_handlers.clone_obj = NULL;
zend_declare_property_string(default_exception_ce, "message", sizeof("message")-1, "", ZEND_ACC_PROTECTED TSRMLS_CC);
zend_declare_property_string(default_exception_ce, "string", sizeof("string")-1, "", ZEND_ACC_PRIVATE TSRMLS_CC);
zend_declare_property_long(default_exception_ce, "code", sizeof("code")-1, 0, ZEND_ACC_PROTECTED TSRMLS_CC);
zend_declare_property_null(default_exception_ce, "file", sizeof("file")-1, ZEND_ACC_PROTECTED TSRMLS_CC);
zend_declare_property_null(default_exception_ce, "line", sizeof("line")-1, ZEND_ACC_PROTECTED TSRMLS_CC);
zend_declare_property_null(default_exception_ce, "trace", sizeof("trace")-1, ZEND_ACC_PRIVATE TSRMLS_CC);
zend_declare_property_null(default_exception_ce, "previous", sizeof("previous")-1, ZEND_ACC_PRIVATE TSRMLS_CC);
INIT_CLASS_ENTRY(ce, "ErrorException", error_exception_functions);
error_exception_ce = zend_register_internal_class_ex(&ce, default_exception_ce, NULL TSRMLS_CC);
error_exception_ce->create_object = zend_error_exception_new;
zend_declare_property_long(error_exception_ce, "severity", sizeof("severity")-1, E_ERROR, ZEND_ACC_PROTECTED TSRMLS_CC);
}
/* }}} */
ZEND_API zend_class_entry *zend_exception_get_default(TSRMLS_D) /* {{{ */
{
return default_exception_ce;
}
/* }}} */
ZEND_API zend_class_entry *zend_get_error_exception(TSRMLS_D) /* {{{ */
{
return error_exception_ce;
}
/* }}} */
ZEND_API zval * zend_throw_exception(zend_class_entry *exception_ce, const char *message, long code TSRMLS_DC) /* {{{ */
{
zval *ex;
MAKE_STD_ZVAL(ex);
if (exception_ce) {
if (!instanceof_function(exception_ce, default_exception_ce TSRMLS_CC)) {
zend_error(E_NOTICE, "Exceptions must be derived from the Exception base class");
exception_ce = default_exception_ce;
}
} else {
exception_ce = default_exception_ce;
}
object_init_ex(ex, exception_ce);
if (message) {
zend_update_property_string(default_exception_ce, ex, "message", sizeof("message")-1, message TSRMLS_CC);
}
if (code) {
zend_update_property_long(default_exception_ce, ex, "code", sizeof("code")-1, code TSRMLS_CC);
}
zend_throw_exception_internal(ex TSRMLS_CC);
return ex;
}
/* }}} */
ZEND_API zval * zend_throw_exception_ex(zend_class_entry *exception_ce, long code TSRMLS_DC, const char *format, ...) /* {{{ */
{
va_list arg;
char *message;
zval *zexception;
va_start(arg, format);
zend_vspprintf(&message, 0, format, arg);
va_end(arg);
zexception = zend_throw_exception(exception_ce, message, code TSRMLS_CC);
efree(message);
return zexception;
}
/* }}} */
ZEND_API zval * zend_throw_error_exception(zend_class_entry *exception_ce, const char *message, long code, int severity TSRMLS_DC) /* {{{ */
{
zval *ex = zend_throw_exception(exception_ce, message, code TSRMLS_CC);
zend_update_property_long(default_exception_ce, ex, "severity", sizeof("severity")-1, severity TSRMLS_CC);
return ex;
}
/* }}} */
static void zend_error_va(int type, const char *file, uint lineno, const char *format, ...) /* {{{ */
{
va_list args;
va_start(args, format);
zend_error_cb(type, file, lineno, format, args);
va_end(args);
}
/* }}} */
/* This function doesn't return if it uses E_ERROR */
ZEND_API void zend_exception_error(zval *exception, int severity TSRMLS_DC) /* {{{ */
{
zend_class_entry *ce_exception = Z_OBJCE_P(exception);
if (instanceof_function(ce_exception, default_exception_ce TSRMLS_CC)) {
zval *str, *file, *line;
EG(exception) = NULL;
zend_call_method_with_0_params(&exception, ce_exception, NULL, "__tostring", &str);
if (!EG(exception)) {
if (Z_TYPE_P(str) != IS_STRING) {
zend_error(E_WARNING, "%s::__toString() must return a string", ce_exception->name);
} else {
zend_update_property_string(default_exception_ce, exception, "string", sizeof("string")-1, EG(exception) ? ce_exception->name : Z_STRVAL_P(str) TSRMLS_CC);
}
}
zval_ptr_dtor(&str);
if (EG(exception)) {
/* do the best we can to inform about the inner exception */
if (instanceof_function(ce_exception, default_exception_ce TSRMLS_CC)) {
file = zend_read_property(default_exception_ce, EG(exception), "file", sizeof("file")-1, 1 TSRMLS_CC);
line = zend_read_property(default_exception_ce, EG(exception), "line", sizeof("line")-1, 1 TSRMLS_CC);
convert_to_string(file);
file = (Z_STRLEN_P(file) > 0) ? file : NULL;
line = (Z_TYPE_P(line) == IS_LONG) ? line : NULL;
} else {
file = NULL;
line = NULL;
}
zend_error_va(E_WARNING, file ? Z_STRVAL_P(file) : NULL, line ? Z_LVAL_P(line) : 0, "Uncaught %s in exception handling during call to %s::__tostring()", Z_OBJCE_P(EG(exception))->name, ce_exception->name);
}
str = zend_read_property(default_exception_ce, exception, "string", sizeof("string")-1, 1 TSRMLS_CC);
file = zend_read_property(default_exception_ce, exception, "file", sizeof("file")-1, 1 TSRMLS_CC);
line = zend_read_property(default_exception_ce, exception, "line", sizeof("line")-1, 1 TSRMLS_CC);
convert_to_string(str);
convert_to_string(file);
convert_to_long(line);
zend_error_va(severity, (Z_STRLEN_P(file) > 0) ? Z_STRVAL_P(file) : NULL, Z_LVAL_P(line), "Uncaught %s\n thrown", Z_STRVAL_P(str));
} else {
zend_error(severity, "Uncaught exception '%s'", ce_exception->name);
}
}
/* }}} */
ZEND_API void zend_throw_exception_object(zval *exception TSRMLS_DC) /* {{{ */
{
zend_class_entry *exception_ce;
if (exception == NULL || Z_TYPE_P(exception) != IS_OBJECT) {
zend_error(E_ERROR, "Need to supply an object when throwing an exception");
}
exception_ce = Z_OBJCE_P(exception);
if (!exception_ce || !instanceof_function(exception_ce, default_exception_ce TSRMLS_CC)) {
zend_error(E_ERROR, "Exceptions must be valid objects derived from the Exception base class");
}
zend_throw_exception_internal(exception TSRMLS_CC);
}
/* }}} */
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* indent-tabs-mode: t
* End:
*/
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