JavascriptEngineV8::JavascriptEngineV8(const ScriptEngineOptions& options)
: ScriptEngine(options)
{
_isolate = v8::Isolate::New();
v8::Locker locker(_isolate);
v8::Isolate::Scope isolate_scope(_isolate);
v8::HandleScope handle_scope(_isolate);
_globalContext.Reset(_isolate, createGlobalContext());
if (options.script().isSet() && !options.script()->getCode().empty())
{
// Create a nested handle scope
v8::HandleScope local_handle_scope(_isolate);
// Enter the global context
v8::Local<v8::Context> globalContext = *reinterpret_cast<v8::Local<v8::Context>*>(&_globalContext);
v8::Context::Scope context_scope(globalContext);
// Compile and run the script
ScriptResult result = executeScript(v8::String::New(options.script()->getCode().c_str(), options.script()->getCode().length()));
if (!result.success())
OE_WARN << LC << "Error reading javascript: " << result.message() << std::endl;
}
}
void
DuktapeEngine::Context::initialize(const ScriptEngineOptions& options)
{
if ( _ctx == 0L )
{
// new heap + context.
_ctx = duk_create_heap_default();
// if there is a static script, evaluate it first. This will register
// any functions or objects with the EcmaScript global object.
if ( options.script().isSet() )
{
bool ok = (duk_peval_string(_ctx, options.script()->getCode().c_str()) == 0); // [ "result" ]
if ( !ok )
{
const char* err = duk_safe_to_string(_ctx, -1);
OE_WARN << LC << err << std::endl;
}
duk_pop(_ctx); // []
}
// Create the global feature object.
{
duk_push_global_object(_ctx); // [ global ] feature object's home
duk_push_object(_ctx); // [ global feature ] empty object for starters
duk_put_prop_string(_ctx, -2, "feature"); // [ global ] name it and add it to the global
duk_pop(_ctx); // [] pop the global
// support for the idiom: feature.attributes['attr']
duk_eval_string_noresult(_ctx, "Object.defineProperty(feature, 'attributes', {get:function() {return feature;}});");
}
}
}
ScriptEngine*
ScriptEngineFactory::create( const std::string& language, const std::string& engineName )
{
ScriptEngineOptions opts;
opts.setDriver(language + (engineName.empty() ? "" : (std::string("_") + engineName)));
return create(opts);
}
ScriptEngine*
ScriptEngineFactory::create( const Script& script, const std::string& engineName )
{
ScriptEngineOptions opts;
opts.setDriver(script.getLanguage() + (engineName.empty() ? "" : (std::string("_") + engineName)));
opts.script() = script;
return create(opts);
}
