mirror of
https://github.com/phpv8/v8js.git
synced 2024-09-19 21:15:19 +00:00
397 lines
12 KiB
C++
397 lines
12 KiB
C++
/*
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+----------------------------------------------------------------------+
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| PHP Version 5 |
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+----------------------------------------------------------------------+
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| Copyright (c) 1997-2013 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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+----------------------------------------------------------------------+
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*/
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/* $Id$ */
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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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extern "C" {
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#include "zend_exceptions.h"
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}
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/* Forward declarations */
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void php_v8js_commonjs_normalise_identifier(char *base, char *identifier, char *normalised_path, char *module_name);
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/* global.exit - terminate execution */
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V8JS_METHOD(exit) /* {{{ */
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{
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v8::V8::TerminateExecution();
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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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php_sleep(info[0]->Int32Value());
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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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int ret = 0;
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V8JS_TSRMLS_FETCH();
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for (int i = 0; i < info.Length(); i++) {
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v8::String::Utf8Value str(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(V8JS_INT(ret));
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}
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/* }}} */
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static void _php_v8js_dumper(v8::Isolate *isolate, v8::Local<v8::Value> var, int level TSRMLS_DC) /* {{{ */
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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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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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php_printf("int(%ld)\n", (long) var->IntegerValue());
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return;
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}
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if (var->IsUint32())
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{
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php_printf("int(%lu)\n", (unsigned long) var->IntegerValue());
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return;
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}
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if (var->IsNumber())
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{
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php_printf("float(%f)\n", var->NumberValue());
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return;
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}
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if (var->IsBoolean())
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{
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php_printf("bool(%s)\n", var->BooleanValue() ? "true" : "false");
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return;
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}
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v8::TryCatch try_catch; /* object.toString() can throw an exception */
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v8::Local<v8::String> details = var->ToDetailString();
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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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v8::String::Utf8Value str(details);
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const char *valstr = ToCString(str);
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size_t valstr_len = (valstr) ? strlen(valstr) : 0;
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if (var->IsString())
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{
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php_printf("string(%zu) \"%s\"\n", valstr_len, valstr);
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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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#if PHP_V8_API_VERSION >= 2003007
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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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#endif
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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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_php_v8js_dumper(isolate, array->Get(i), level + 1 TSRMLS_CC);
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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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V8JS_GET_CLASS_NAME(cname, object);
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int hash = object->GetIdentityHash();
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if (var->IsFunction())
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{
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v8::String::Utf8Value csource(object->ToString());
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php_printf("object(Closure)#%d {\n%*c%s\n", hash, level * 2 + 2, ' ', ToCString(csource));
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}
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else
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{
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v8::Local<v8::Array> keys = object->GetOwnPropertyNames();
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uint32_t length = keys->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::Local<v8::String> key = keys->Get(i)->ToString();
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v8::String::Utf8Value kname(key);
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php_printf("%*c[\"%s\"] =>\n", level * 2, ' ', ToCString(kname));
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_php_v8js_dumper(isolate, object->Get(key), level + 1 TSRMLS_CC);
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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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V8JS_TSRMLS_FETCH();
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for (int i = 0; i < info.Length(); i++) {
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_php_v8js_dumper(isolate, info[i], 1 TSRMLS_CC);
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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_TSRMLS_FETCH();
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// Get the extension context
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v8::Handle<v8::External> data = v8::Handle<v8::External>::Cast(info.Data());
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php_v8js_ctx *c = static_cast<php_v8js_ctx*>(data->Value());
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// Check that we have a module loader
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if (c->module_loader == NULL) {
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info.GetReturnValue().Set(v8::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(info[0]);
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// Make sure to duplicate the module name string so it doesn't get freed by the V8 garbage collector
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char *module_id = estrdup(ToCString(module_id_v8));
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char *normalised_path = (char *)emalloc(PATH_MAX);
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char *module_name = (char *)emalloc(PATH_MAX);
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php_v8js_commonjs_normalise_identifier(c->modules_base.back(), module_id, normalised_path, module_name);
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efree(module_id);
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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_path);
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info.GetReturnValue().Set(v8::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 (V8JSG(modules_loaded).count(normalised_module_id) > 0) {
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efree(normalised_path);
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info.GetReturnValue().Set(V8JSG(modules_loaded)[normalised_module_id]);
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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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zval *normalised_path_zend;
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MAKE_STD_ZVAL(normalised_path_zend);
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ZVAL_STRING(normalised_path_zend, normalised_module_id, 1);
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zval* params[] = { normalised_path_zend };
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if (FAILURE == call_user_function(EG(function_table), NULL, c->module_loader, &module_code, 1, params TSRMLS_CC)) {
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efree(normalised_path);
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info.GetReturnValue().Set(v8::ThrowException(V8JS_SYM("Module loader callback failed")));
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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_path);
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// Clear the PHP exception and throw it in V8 instead
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zend_clear_exception(TSRMLS_C);
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info.GetReturnValue().Set(v8::ThrowException(V8JS_SYM("Module loader callback exception")));
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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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// Check that some code has been returned
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if (!strlen(Z_STRVAL(module_code))) {
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efree(normalised_path);
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info.GetReturnValue().Set(v8::ThrowException(V8JS_SYM("Module loader callback did not return code")));
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return;
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}
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// Create a template for the global object and set the built-in global functions
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v8::Handle<v8::ObjectTemplate> global = v8::ObjectTemplate::New();
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global->Set(V8JS_SYM("print"), v8::FunctionTemplate::New(V8JS_MN(print)), v8::ReadOnly);
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global->Set(V8JS_SYM("sleep"), v8::FunctionTemplate::New(V8JS_MN(sleep)), v8::ReadOnly);
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global->Set(V8JS_SYM("require"), v8::FunctionTemplate::New(V8JS_MN(require), v8::External::New(c)), v8::ReadOnly);
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// Add the exports object in which the module can return its API
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v8::Handle<v8::ObjectTemplate> exports_template = v8::ObjectTemplate::New();
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v8::Handle<v8::Object> exports = exports_template->NewInstance();
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global->Set(V8JS_SYM("exports"), exports);
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// Add the module object in which the module can have more fine-grained control over what it can return
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v8::Handle<v8::ObjectTemplate> module_template = v8::ObjectTemplate::New();
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v8::Handle<v8::Object> module = module_template->NewInstance();
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module->Set(V8JS_SYM("id"), V8JS_STR(normalised_module_id));
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global->Set(V8JS_SYM("module"), module);
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// Each module gets its own context so different modules do not affect each other
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v8::Local<v8::Context> context = v8::Local<v8::Context>::New(isolate, v8::Context::New(isolate, NULL, global));
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// Catch JS exceptions
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v8::TryCatch try_catch;
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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_SYM("require");
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v8::Local<v8::String> source = V8JS_STR(Z_STRVAL(module_code));
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// Create and compile script
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v8::Local<v8::Script> script = v8::Script::New(source, sname);
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// The script will be empty if there are compile errors
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if (script.IsEmpty()) {
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efree(normalised_path);
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info.GetReturnValue().Set(v8::ThrowException(V8JS_SYM("Module script compile failed")));
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return;
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}
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// Add this module and path to the stack
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c->modules_stack.push_back(normalised_module_id);
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c->modules_base.push_back(normalised_path);
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// Run script
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v8::Local<v8::Value> result = script->Run();
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// Remove this module and path from the stack
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c->modules_stack.pop_back();
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c->modules_base.pop_back();
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efree(normalised_path);
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// Script possibly terminated, return immediately
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if (!try_catch.CanContinue()) {
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info.GetReturnValue().Set(v8::ThrowException(V8JS_SYM("Module script compile failed")));
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return;
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}
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// Handle runtime JS exceptions
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if (try_catch.HasCaught()) {
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// Rethrow the exception back to JS
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info.GetReturnValue().Set(try_catch.ReThrow());
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return;
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}
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// Cache the module so it doesn't need to be compiled and run again
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// Ensure compatibility with CommonJS implementations such as NodeJS by playing nicely with module.exports and exports
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if (module->Has(V8JS_SYM("exports")) && !module->Get(V8JS_SYM("exports"))->IsUndefined()) {
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// If module.exports has been set then we cache this arbitrary value...
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V8JSG(modules_loaded)[normalised_module_id] = handle_scope.Close(module->Get(V8JS_SYM("exports"))->ToObject());
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} else {
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// ...otherwise we cache the exports object itself
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V8JSG(modules_loaded)[normalised_module_id] = handle_scope.Close(exports);
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}
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info.GetReturnValue().Set(V8JSG(modules_loaded)[normalised_module_id]);
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}
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void php_v8js_register_methods(v8::Handle<v8::ObjectTemplate> global, php_v8js_ctx *c) /* {{{ */
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{
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v8::Isolate *isolate = c->isolate;
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global->Set(V8JS_SYM("exit"), v8::FunctionTemplate::New(V8JS_MN(exit)), v8::ReadOnly);
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global->Set(V8JS_SYM("sleep"), v8::FunctionTemplate::New(V8JS_MN(sleep)), v8::ReadOnly);
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global->Set(V8JS_SYM("print"), v8::FunctionTemplate::New(V8JS_MN(print)), v8::ReadOnly);
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global->Set(V8JS_SYM("var_dump"), v8::FunctionTemplate::New(V8JS_MN(var_dump)), v8::ReadOnly);
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c->modules_base.push_back("");
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global->Set(V8JS_SYM("require"), v8::FunctionTemplate::New(V8JS_MN(require), v8::External::New(c)), v8::ReadOnly);
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}
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/* }}} */
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/*
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* Local variables:
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* tab-width: 4
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* c-basic-offset: 4
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* End:
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* vim600: noet sw=4 ts=4 fdm=marker
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* vim<600: noet sw=4 ts=4
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*/
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