mirror of
https://github.com/phpv8/v8js.git
synced 2024-12-23 13:51:52 +00:00
635 lines
17 KiB
C++
635 lines
17 KiB
C++
/*
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+----------------------------------------------------------------------+
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| PHP Version 7 |
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+----------------------------------------------------------------------+
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| Copyright (c) 1997-2017 The PHP Group |
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+----------------------------------------------------------------------+
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| http://www.opensource.org/licenses/mit-license.php MIT License |
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+----------------------------------------------------------------------+
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| Author: Jani Taskinen <jani.taskinen@iki.fi> |
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| Author: Patrick Reilly <preilly@php.net> |
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| Author: Stefan Siegl <stesie@php.net> |
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+----------------------------------------------------------------------+
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "php_v8js_macros.h"
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#include "v8js_commonjs.h"
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#include "v8js_exceptions.h"
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#include "v8js_object_export.h"
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extern "C" {
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#include "zend_exceptions.h"
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}
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/* global.exit - terminate execution */
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V8JS_METHOD(exit) /* {{{ */
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{
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v8::Isolate *isolate = info.GetIsolate();
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v8js_terminate_execution(isolate);
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}
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/* }}} */
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/* global.sleep - sleep for passed seconds */
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V8JS_METHOD(sleep) /* {{{ */
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{
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v8::Isolate *isolate = info.GetIsolate();
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v8js_ctx *c = (v8js_ctx *) isolate->GetData(0);
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v8::Maybe<int32_t> t = info[0]->Int32Value(v8::Local<v8::Context>::New(isolate, c->context));
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if (t.IsJust()) {
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php_sleep(t.FromJust());
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}
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}
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/* }}} */
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/* global.print - php print() */
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V8JS_METHOD(print) /* {{{ */
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{
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v8::Isolate *isolate = info.GetIsolate();
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zend_long ret = 0;
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for (int i = 0; i < info.Length(); i++) {
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v8::String::Utf8Value str(isolate, info[i]);
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const char *cstr = ToCString(str);
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ret = PHPWRITE(cstr, strlen(cstr));
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}
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info.GetReturnValue().Set(zend_long_to_v8js(ret, isolate));
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}
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/* }}} */
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static void v8js_dumper(v8::Isolate *isolate, v8::Local<v8::Value> var, int level) /* {{{ */
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{
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v8js_ctx *c = (v8js_ctx *) isolate->GetData(0);
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v8::Local<v8::Context> v8_context = v8::Local<v8::Context>::New(isolate, c->context);
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if (level > 1) {
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php_printf("%*c", (level - 1) * 2, ' ');
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}
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if (var.IsEmpty())
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{
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php_printf("<empty>\n");
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return;
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}
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if (var->IsNull() || var->IsUndefined() /* PHP compat */)
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{
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php_printf("NULL\n");
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return;
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}
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if (var->IsInt32())
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{
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v8::Maybe<int64_t> value = var->IntegerValue(v8_context);
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if (value.IsNothing())
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{
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php_printf("<empty>\n");
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}
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else
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{
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php_printf("int(%ld)\n", (long) value.FromJust());
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}
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return;
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}
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if (var->IsUint32())
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{
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v8::Maybe<uint32_t> value = var->Uint32Value(v8_context);
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if (value.IsNothing())
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{
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php_printf("<empty>\n");
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}
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else
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{
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php_printf("int(%lu)\n", (unsigned long) value.FromJust());
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}
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return;
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}
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if (var->IsNumber())
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{
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v8::Maybe<double> value = var->NumberValue(v8_context);
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if (value.IsNothing())
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{
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php_printf("<empty>\n");
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}
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else
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{
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php_printf("float(%f)\n", value.FromJust());
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}
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return;
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}
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if (var->IsBoolean())
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{
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bool value = var->BooleanValue(isolate);
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php_printf("bool(%s)\n", value ? "true" : "false");
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return;
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}
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v8::TryCatch try_catch(isolate); /* object.toString() can throw an exception */
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v8::Local<v8::String> details;
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if(var->IsRegExp()) {
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v8::RegExp *re = v8::RegExp::Cast(*var);
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details = re->GetSource();
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}
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else {
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details = var->ToDetailString(v8_context).FromMaybe(v8::Local<v8::String>());
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if (try_catch.HasCaught()) {
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details = V8JS_SYM("<toString threw exception>");
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}
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}
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v8::String::Utf8Value str(isolate, details);
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const char *valstr = ToCString(str);
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size_t valstr_len = str.length();
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if (var->IsString())
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{
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php_printf("string(%zu) \"", valstr_len);
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PHPWRITE(valstr, valstr_len);
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php_printf("\"\n");
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}
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else if (var->IsDate())
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{
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// fake the fields of a PHP DateTime
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php_printf("Date(%s)\n", valstr);
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}
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else if (var->IsRegExp())
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{
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php_printf("regexp(/%s/)\n", valstr);
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}
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else if (var->IsArray())
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{
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v8::Local<v8::Array> array = v8::Local<v8::Array>::Cast(var);
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uint32_t length = array->Length();
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php_printf("array(%d) {\n", length);
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for (unsigned i = 0; i < length; i++) {
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php_printf("%*c[%d] =>\n", level * 2, ' ', i);
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v8::MaybeLocal<v8::Value> value = array->Get(v8_context, i);
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if (value.IsEmpty())
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{
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php_printf("<empty>\n");
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}
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else
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{
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v8js_dumper(isolate, value.ToLocalChecked(), level + 1);
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}
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}
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if (level > 1) {
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php_printf("%*c", (level - 1) * 2, ' ');
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}
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ZEND_PUTS("}\n");
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}
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else if (var->IsObject())
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{
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v8::Local<v8::Object> object = v8::Local<v8::Object>::Cast(var);
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v8::String::Utf8Value cname(isolate, object->GetConstructorName());
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int hash = object->GetIdentityHash();
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if (var->IsFunction() && strcmp(ToCString(cname), "Closure") != 0)
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{
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php_printf("object(Closure)#%d {\n%*c", hash, level * 2 + 2, ' ');
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v8::Local<v8::String> source;
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if (object->ToString(v8_context).ToLocal(&source))
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{
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v8::String::Utf8Value csource(isolate, source);
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php_printf("%s\n", ToCString(csource));
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}
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else
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{
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php_printf("<empty>\n");
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}
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}
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else
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{
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v8::MaybeLocal<v8::Array> keys = object->GetOwnPropertyNames(v8_context);
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uint32_t length = keys.IsEmpty() ? 0 : keys.ToLocalChecked()->Length();
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if (strcmp(ToCString(cname), "Array") == 0 ||
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strcmp(ToCString(cname), "V8Object") == 0) {
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php_printf("array");
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} else {
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php_printf("object(%s)#%d", ToCString(cname), hash);
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}
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php_printf(" (%d) {\n", length);
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for (unsigned i = 0; i < length; i++) {
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v8::MaybeLocal<v8::Value> key_slot = keys.ToLocalChecked()->Get(v8_context, i);
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v8::Local<v8::String> key;
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if (key_slot.IsEmpty() || !key_slot.ToLocalChecked()->ToString(v8_context).ToLocal(&key))
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{
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key = V8JS_SYM("<empty>");
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}
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v8::String::Utf8Value key_name(isolate, key);
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php_printf("%*c[\"%s\"] =>\n", level * 2, ' ', ToCString(key_name));
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v8::MaybeLocal<v8::Value> value = object->Get(v8_context, key);
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if (value.IsEmpty())
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{
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php_printf("<empty>\n");
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}
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else
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{
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v8js_dumper(isolate, value.ToLocalChecked(), level + 1);
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}
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}
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}
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if (level > 1) {
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php_printf("%*c", (level - 1) * 2, ' ');
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}
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ZEND_PUTS("}\n");
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}
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else /* null, undefined, etc. */
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{
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php_printf("<%s>\n", valstr);
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}
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}
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/* }}} */
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/* global.var_dump - Dump JS values */
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V8JS_METHOD(var_dump) /* {{{ */
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{
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v8::Isolate *isolate = info.GetIsolate();
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for (int i = 0; i < info.Length(); i++) {
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v8js_dumper(isolate, info[i], 1);
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}
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info.GetReturnValue().Set(V8JS_NULL);
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}
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/* }}} */
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V8JS_METHOD(require)
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{
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v8::Isolate *isolate = info.GetIsolate();
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v8js_ctx *c = (v8js_ctx *) isolate->GetData(0);
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v8::String::Utf8Value module_base(isolate, info.Data());
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const char *module_base_cstr = ToCString(module_base);
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// Check that we have a module loader
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if(Z_TYPE(c->module_loader) == IS_NULL) {
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info.GetReturnValue().Set(isolate->ThrowException(V8JS_SYM("No module loader")));
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return;
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}
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v8::String::Utf8Value module_id_v8(isolate, info[0]);
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const char *module_id = ToCString(module_id_v8);
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char *normalised_path, *module_name;
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if (Z_TYPE(c->module_normaliser) == IS_NULL) {
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// No custom normalisation routine registered, use internal one
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normalised_path = (char *)emalloc(PATH_MAX);
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module_name = (char *)emalloc(PATH_MAX);
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v8js_commonjs_normalise_identifier(module_base_cstr, module_id, normalised_path, module_name);
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}
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else {
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// Call custom normaliser
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int call_result;
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zval params[2];
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zval normaliser_result;
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zend_try {
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{
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isolate->Exit();
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v8::Unlocker unlocker(isolate);
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ZVAL_STRING(¶ms[0], module_base_cstr);
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ZVAL_STRING(¶ms[1], module_id);
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call_result = call_user_function(EG(function_table), NULL, &c->module_normaliser,
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&normaliser_result, 2, params);
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}
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isolate->Enter();
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if (call_result == FAILURE) {
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info.GetReturnValue().Set(isolate->ThrowException(V8JS_SYM("Module normaliser callback failed")));
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}
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}
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zend_catch {
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v8js_terminate_execution(isolate);
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V8JSG(fatal_error_abort) = 1;
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call_result = FAILURE;
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}
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zend_end_try();
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zval_ptr_dtor(¶ms[0]);
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zval_ptr_dtor(¶ms[1]);
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if(call_result == FAILURE) {
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return;
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}
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// Check if an exception was thrown
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if (EG(exception)) {
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info.GetReturnValue().Set(v8js_propagate_exception(c));
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return;
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}
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if (Z_TYPE(normaliser_result) != IS_ARRAY) {
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zval_ptr_dtor(&normaliser_result);
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info.GetReturnValue().Set(isolate->ThrowException(V8JS_SYM("Module normaliser didn't return an array")));
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return;
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}
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HashTable *ht = HASH_OF(&normaliser_result);
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int num_elements = zend_hash_num_elements(ht);
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if(num_elements != 2) {
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zval_ptr_dtor(&normaliser_result);
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info.GetReturnValue().Set(isolate->ThrowException(V8JS_SYM("Module normaliser expected to return array of 2 strings")));
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return;
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}
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zval *data;
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zend_ulong index = 0;
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ZEND_HASH_FOREACH_VAL(ht, data) {
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if (Z_TYPE_P(data) != IS_STRING) {
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convert_to_string(data);
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}
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switch(index++) {
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case 0: // normalised path
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normalised_path = estrndup(Z_STRVAL_P(data), Z_STRLEN_P(data));
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break;
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case 1: // normalised module id
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module_name = estrndup(Z_STRVAL_P(data), Z_STRLEN_P(data));
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break;
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}
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}
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ZEND_HASH_FOREACH_END();
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zval_ptr_dtor(&normaliser_result);
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}
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char *normalised_module_id = (char *)emalloc(strlen(normalised_path)+1+strlen(module_name)+1);
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*normalised_module_id = 0;
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if (strlen(normalised_path) > 0) {
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strcat(normalised_module_id, normalised_path);
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strcat(normalised_module_id, "/");
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}
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strcat(normalised_module_id, module_name);
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efree(module_name);
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// Check for module cyclic dependencies
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for (std::vector<char *>::iterator it = c->modules_stack.begin(); it != c->modules_stack.end(); ++it)
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{
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if (!strcmp(*it, normalised_module_id)) {
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efree(normalised_module_id);
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efree(normalised_path);
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info.GetReturnValue().Set(isolate->ThrowException(V8JS_SYM("Module cyclic dependency")));
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return;
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}
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}
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// If we have already loaded and cached this module then use it
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if (c->modules_loaded.count(normalised_module_id) > 0) {
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v8::Global<v8::Value> newobj;
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newobj.Reset(isolate, c->modules_loaded[normalised_module_id]);
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// TODO store v8::Global in c->modules_loaded directly!?
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info.GetReturnValue().Set(v8::Global<v8::Value>(isolate, newobj));
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efree(normalised_module_id);
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efree(normalised_path);
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return;
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}
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// Callback to PHP to load the module code
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zval module_code;
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int call_result;
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zval params[1];
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{
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isolate->Exit();
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v8::Unlocker unlocker(isolate);
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zend_try {
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ZVAL_STRING(¶ms[0], normalised_module_id);
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call_result = call_user_function(EG(function_table), NULL, &c->module_loader, &module_code, 1, params);
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}
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zend_catch {
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v8js_terminate_execution(isolate);
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V8JSG(fatal_error_abort) = 1;
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}
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zend_end_try();
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}
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isolate->Enter();
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if (V8JSG(fatal_error_abort)) {
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call_result = FAILURE;
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}
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else if (call_result == FAILURE) {
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info.GetReturnValue().Set(isolate->ThrowException(V8JS_SYM("Module loader callback failed")));
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}
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zval_ptr_dtor(¶ms[0]);
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if (call_result == FAILURE) {
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efree(normalised_module_id);
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efree(normalised_path);
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return;
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}
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// Check if an exception was thrown
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if (EG(exception)) {
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efree(normalised_module_id);
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efree(normalised_path);
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info.GetReturnValue().Set(v8js_propagate_exception(c));
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return;
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}
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if(Z_TYPE(module_code) == IS_ARRAY) {
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v8::Local<v8::Value> newarray = zval_to_v8js(&module_code, isolate);
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c->modules_loaded[normalised_module_id].Reset(isolate, newarray);
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info.GetReturnValue().Set(newarray);
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efree(normalised_path);
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return;
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}
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if(Z_TYPE(module_code) == IS_OBJECT) {
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v8::Local<v8::Object> newobj = zval_to_v8js(&module_code, isolate)->ToObject(isolate->GetEnteredOrMicrotaskContext()).ToLocalChecked();
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c->modules_loaded[normalised_module_id].Reset(isolate, newobj);
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info.GetReturnValue().Set(newobj);
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efree(normalised_path);
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return;
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}
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// Convert the return value to string
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if (Z_TYPE(module_code) != IS_STRING) {
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convert_to_string(&module_code);
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}
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v8::Local<v8::Context> context = v8::Local<v8::Context>::New(isolate, c->context);
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// Catch JS exceptions
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v8::TryCatch try_catch(isolate);
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v8::Locker locker(isolate);
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v8::Isolate::Scope isolate_scope(isolate);
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v8::HandleScope handle_scope(isolate);
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// Enter the module context
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v8::Context::Scope scope(context);
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// Set script identifier
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v8::Local<v8::String> sname = V8JS_STR(normalised_module_id);
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#if PHP_V8_API_VERSION >= 12002000
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v8::ScriptOrigin origin(sname);
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#else
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v8::ScriptOrigin origin(c->isolate, sname);
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#endif
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if (Z_STRLEN(module_code) > std::numeric_limits<int>::max()) {
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zend_throw_exception(php_ce_v8js_exception,
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"Module code size exceeds maximum supported length", 0);
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return;
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}
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v8::Local<v8::String> source = V8JS_ZSTR(Z_STR(module_code));
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zval_ptr_dtor(&module_code);
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source = v8::String::Concat(isolate, V8JS_SYM("(function (exports, module, require) {"), source);
|
||
source = v8::String::Concat(isolate, source, V8JS_SYM("\n});"));
|
||
|
||
// Create and compile script
|
||
v8::MaybeLocal<v8::Script> script = v8::Script::Compile(context, source, &origin);
|
||
|
||
// The script will be empty if there are compile errors
|
||
if (script.IsEmpty()) {
|
||
efree(normalised_module_id);
|
||
efree(normalised_path);
|
||
info.GetReturnValue().Set(isolate->ThrowException(V8JS_SYM("Module script compile failed")));
|
||
return;
|
||
}
|
||
|
||
v8::Local<v8::String> base_path = V8JS_STR(normalised_path);
|
||
v8::MaybeLocal<v8::Function> require_fn = v8::FunctionTemplate::New(isolate, V8JS_MN(require), base_path)->GetFunction(context);
|
||
|
||
if (require_fn.IsEmpty()) {
|
||
efree(normalised_path);
|
||
efree(normalised_module_id);
|
||
info.GetReturnValue().Set(isolate->ThrowException(V8JS_SYM("Failed to create require method")));
|
||
return;
|
||
}
|
||
|
||
|
||
// Add this module and path to the stack
|
||
c->modules_stack.push_back(normalised_module_id);
|
||
|
||
// Run script to evaluate closure
|
||
v8::MaybeLocal<v8::Value> module_function = script.ToLocalChecked()->Run(context);
|
||
|
||
// Prepare exports & module object
|
||
v8::Local<v8::Object> exports = v8::Object::New(isolate);
|
||
|
||
v8::Local<v8::Object> module = v8::Object::New(isolate);
|
||
module->Set(context, V8JS_SYM("id"), V8JS_STR(normalised_module_id));
|
||
module->Set(context, V8JS_SYM("exports"), exports);
|
||
|
||
if (!module_function.IsEmpty() && module_function.ToLocalChecked()->IsFunction()) {
|
||
v8::Local<v8::Value> *jsArgv = static_cast<v8::Local<v8::Value> *>(alloca(3 * sizeof(v8::Local<v8::Value>)));
|
||
new(&jsArgv[0]) v8::Local<v8::Value>;
|
||
jsArgv[0] = exports;
|
||
|
||
new(&jsArgv[1]) v8::Local<v8::Value>;
|
||
jsArgv[1] = module;
|
||
|
||
new(&jsArgv[2]) v8::Local<v8::Value>;
|
||
jsArgv[2] = require_fn.ToLocalChecked();
|
||
|
||
// actually call the module
|
||
v8::Local<v8::Function>::Cast(module_function.ToLocalChecked())->Call(context, exports, 3, jsArgv);
|
||
}
|
||
|
||
// Remove this module and path from the stack
|
||
c->modules_stack.pop_back();
|
||
|
||
efree(normalised_path);
|
||
|
||
if (module_function.IsEmpty() || !module_function.ToLocalChecked()->IsFunction()) {
|
||
info.GetReturnValue().Set(isolate->ThrowException(V8JS_SYM("Wrapped module script failed to return function")));
|
||
efree(normalised_module_id);
|
||
return;
|
||
}
|
||
|
||
// Script possibly terminated, return immediately
|
||
if (!try_catch.CanContinue()) {
|
||
info.GetReturnValue().Set(isolate->ThrowException(V8JS_SYM("Module script compile failed")));
|
||
efree(normalised_module_id);
|
||
return;
|
||
}
|
||
|
||
// Handle runtime JS exceptions
|
||
if (try_catch.HasCaught()) {
|
||
// Rethrow the exception back to JS
|
||
info.GetReturnValue().Set(try_catch.ReThrow());
|
||
efree(normalised_module_id);
|
||
return;
|
||
}
|
||
|
||
v8::Local<v8::Value> newobj;
|
||
|
||
// Cache the module so it doesn't need to be compiled and run again
|
||
// Ensure compatibility with CommonJS implementations such as NodeJS by playing nicely with module.exports and exports
|
||
v8::Local<v8::String> sym_exports = V8JS_SYM("exports");
|
||
if (module->Has(context, sym_exports).FromMaybe(false))
|
||
{
|
||
module->Get(context, sym_exports).ToLocal(&newobj);
|
||
}
|
||
|
||
c->modules_loaded[normalised_module_id].Reset(isolate, newobj);
|
||
info.GetReturnValue().Set(newobj);
|
||
}
|
||
|
||
void v8js_register_methods(v8::Local<v8::ObjectTemplate> global, v8js_ctx *c) /* {{{ */
|
||
{
|
||
v8::Isolate *isolate = c->isolate;
|
||
global->Set(V8JS_SYM("exit"), v8::FunctionTemplate::New(isolate, V8JS_MN(exit)), v8::ReadOnly);
|
||
global->Set(V8JS_SYM("sleep"), v8::FunctionTemplate::New(isolate, V8JS_MN(sleep)), v8::ReadOnly);
|
||
global->Set(V8JS_SYM("print"), v8::FunctionTemplate::New(isolate, V8JS_MN(print)), v8::ReadOnly);
|
||
global->Set(V8JS_SYM("var_dump"), v8::FunctionTemplate::New(isolate, V8JS_MN(var_dump)), v8::ReadOnly);
|
||
|
||
v8::Local<v8::String> base_path = V8JS_STRL("", 0);
|
||
global->Set(V8JS_SYM("require"), v8::FunctionTemplate::New(isolate, V8JS_MN(require), base_path), v8::ReadOnly);
|
||
}
|
||
/* }}} */
|
||
|
||
/*
|
||
* Local variables:
|
||
* tab-width: 4
|
||
* c-basic-offset: 4
|
||
* indent-tabs-mode: t
|
||
* End:
|
||
* vim600: noet sw=4 ts=4 fdm=marker
|
||
* vim<600: noet sw=4 ts=4
|
||
*/
|