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// v8_utils.h
/* Copyright 2009 10gen Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <cstdio>
#include <cstdlib>
#include <iostream>
#include <string>
#include <v8.h>
namespace mongo {
#define jsassert(x,msg) uassert(16664, (msg), (x))
#define argumentCheck(mustBeTrue, errorMessage) \
if (!(mustBeTrue)) { \
return v8AssertionException((errorMessage)); \
}
std::ostream& operator<<(std::ostream& s, const v8::Handle<v8::Value>& o);
std::ostream& operator<<(std::ostream& s, const v8::Handle<v8::TryCatch>* try_catch);
/** Simple v8 object to string conversion helper */
std::string toSTLString(const v8::Handle<v8::Value>& o);
/** Get the properties of an object (and it's prototype) as a comma-delimited string */
std::string v8ObjectToString(const v8::Handle<v8::Object>& o);
class V8Scope;
void installFork(V8Scope* scope,
v8::Handle<v8::Object>& global,
v8::Handle<v8::Context>& context);
/** Throw a V8 exception from Mongo callback code; message text will be preceded by "Error: ".
* Note: this function should be used for text that did not originate from the JavaScript
* engine. Errors from the JavaScript engine will already have a prefix such as
* ReferenceError, TypeError or SyntaxError.
* Note: call only from a native function called from JavaScript (a callback).
* The V8 ThrowException routine will note a JavaScript exception that will be
* "thrown" in JavaScript when we return from the native function.
* Note: it's required to return immediately to V8's execution control without calling any
* V8 API functions. In this state, an empty handle may (will) be returned.
* @param errorMessage Error message text.
* @return Empty handle to be returned from callback function.
*/
v8::Handle<v8::Value> v8AssertionException(const char* errorMessage);
v8::Handle<v8::Value> v8AssertionException(const std::string& errorMessage);
}
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