Handle<Script> ReadAndCompileScript(const char * filename)
{
Handle<Script> script;
// Create a string containing the JavaScript source code.
FILE * sourceFile = fopen(filename,"rt");
if( sourceFile == NULL )
{
printf("aborting!! Could not open file!");
return script;
}
char buffer[20480];
int bytesRead = fread( buffer, 1, 20480, sourceFile);
if( bytesRead == -1 )
{
printf("aborting!! Could not read from file!");
fclose(sourceFile);
return script;
}
buffer[bytesRead]='\0';
printf("Script, length=%d, source = \n%s\n",strlen(buffer),buffer);
Handle<String> source = String::New(buffer);
fclose(sourceFile);
// Compile the source code.
script = Script::Compile(source);
script->Run();
return script;
}
void RUN(const char * jsstring){
// Create a stack-allocated handle scope.
HandleScope handle_scope;
// Create a new context.
Persistent<Context> context = Context::New();
// Enter the created context for compiling and
// running the hello world script.
Context::Scope context_scope(context);
// Create a string containing the JavaScript source code.
Handle<String> source = String::New(jsstring);
// Compile the source code.
Handle<Script> script = Script::Compile(source);
// Run the script to get the result.
Handle<Value> result = script->Run();
// Dispose the persistent context.
context.Dispose();
// Convert the result to an ASCII string and print it.
String::AsciiValue ascii(result);
printf("%s\n", *ascii);
}
void
test_Exception()
{
HandleScope handle_scope;
Persistent<Context> context = Context::New();
Handle<Script> script = Script::New(String::New("function foo(x) { throw x; };"));
Context::Scope scope(context);
TryCatch trycatch;
Handle<Value> v = script->Run();
do_check_true(!v.IsEmpty());
do_check_true(!trycatch.HasCaught());
Handle<Function> fn = context->Global()->Get(String::NewSymbol("foo")).As<Function>();
do_check_true(!fn.IsEmpty());
Local<Value> args[1] = { Integer::New(4) };
v = fn->Call(context->Global(), 1, args);
do_check_true(v.IsEmpty());
do_check_true(trycatch.HasCaught());
Handle<Value> exn = trycatch.Exception();
do_check_true(exn->IsInt32());
do_check_eq(exn->Int32Value(), 4);
context.Dispose();
}
SV*
V8Context::eval(SV* source, SV* origin) {
HandleScope handle_scope;
TryCatch try_catch;
Context::Scope context_scope(context);
Handle<Script> script = Script::Compile(
sv2v8str(source),
origin ? sv2v8str(origin) : String::New("EVAL")
);
if (try_catch.HasCaught()) {
set_perl_error(try_catch);
return &PL_sv_undef;
} else {
thread_canceller canceller(time_limit_);
Handle<Value> val = script->Run();
if (val.IsEmpty()) {
set_perl_error(try_catch);
return &PL_sv_undef;
} else {
sv_setsv(ERRSV,&PL_sv_undef);
return v82sv(val);
}
}
}
JNIEXPORT jobject JNICALL Java_org_appcelerator_kroll_runtime_v8_V8Runtime_nativeEvalString
(JNIEnv *env, jobject self, jstring source, jstring filename)
{
ENTER_V8(V8Runtime::globalContext);
titanium::JNIScope jniScope(env);
Handle<Value> jsSource = TypeConverter::javaStringToJsString(env, source);
if (jsSource.IsEmpty() || !jsSource->IsString()) {
LOGE(TAG, "Error converting Javascript string, aborting evalString");
return NULL;
}
Handle<Value> jsFilename = TypeConverter::javaStringToJsString(env, filename);
TryCatch tryCatch;
Handle<Script> script = Script::Compile(jsSource->ToString(), jsFilename);
Local<Value> result = script->Run();
if (tryCatch.HasCaught()) {
V8Util::openJSErrorDialog(tryCatch);
V8Util::reportException(tryCatch, true);
return NULL;
}
return TypeConverter::jsValueToJavaObject(env, result);
}
// parse string returned by $self->to_js() into function
void
V8Context::fixup_prototype(Handle<Object> prototype) {
Handle<Value> val = prototype->Get(string_to_js);
if (val.IsEmpty() || !val->IsFunction())
return;
TryCatch try_catch;
Handle<Value> to_js = Handle<Function>::Cast(val)->Call(context->Global(), 0, NULL);
Handle<Script> script = Script::Compile(to_js->ToString());
if (try_catch.HasCaught()) {
set_perl_error(try_catch);
} else {
Handle<Value> val = script->Run();
if (val.IsEmpty() || !val->IsFunction()) {
set_perl_error(try_catch);
}
else {
prototype->Set(string_to_js, val);
}
}
}
extern "C" Handle<Value> execute_string(Persistent<Context> context,
const char* s,
bool* is_exception) {
// Create a stack-allocated handle scope.
HandleScope handle_scope;
// Enter the created context for compiling and
// running the hello world script.
Context::Scope context_scope(context);
// Create a string containing the JavaScript source code.
Handle<String> source = String::New(s);
// Compile it
Handle<Script> script = Script::Compile(source);
// try-catch handler
TryCatch trycatch;
// Run it
Persistent<Value> result = Persistent<Value>::New(script->Run());
// Script->Run() returns an empty handle if the code threw an exception
if (result.IsEmpty()) {
*is_exception = true;
Handle<Value> exception = trycatch.Exception();
// String::AsciiValue exception_str(exception);
return Persistent<Value>::New(exception);
}
return result;
}
void
test_obj_defprop() {
HandleScope handle_scope;
Persistent<Context> context = Context::New();
Context::Scope context_scope(context);
Handle<Object> obj = Object::New();
Handle<Value> data = Integer::New(2);
obj->SetAccessor(String::New("myprop"), ReadTestVal, WriteTestVal, data);
Local<Object> global = context->Global();
global->Set(String::New("testobj"), obj);
Handle<String> source = String::New("var n = testobj.myprop; testobj.myprop = (n+9); testobj.myprop");
// Compile the source code.
Handle<Script> script = Script::Compile(source);
// Run the script to get the result.
Handle<Value> result = script->Run();
do_check_true(!result.IsEmpty());
do_check_true(result->IsInt32());
JSInt32 i = result->Int32Value();
do_check_eq(12, i);
context.Dispose();
}
/**
Loads the config from JSON files
**/
void V8Config::load(string jsonFileName){
LOG(ERROR) << "Loading configuration";
string homeDirectory = fileSystem->getHomeDirectory() + "/Laser";
string jsonConfigFile = fileSystem->readFile(homeDirectory + "/" + jsonFileName);
//create the context
context = Context::New();
// Enter the created context for compiling and
// running the script.
Context::Scope context_scope(context);
// Create a string containing the JavaScript source code.
string evalStart("eval(");
string evalEnd(");");
string evalJson = evalStart + jsonConfigFile + evalEnd;
Handle<String> source = String::New(evalJson.c_str());
// Compile the source code.
Handle<Script> script = Script::Compile(source);
// Run the script to get the result.
Handle<Value> result = script->Run();
parseConfig(result);
// Convert the result to an ASCII string and print it.
String::AsciiValue ascii(result);
LOG(ERROR) << *ascii;
}
int v8main(char *js) {
// Create a new context.
// static
Persistent<Context> context = Context::New(0);
// Create a stack-allocated handle scope.
// HandleScope handle_scope;
// Enter the created context for compiling and
// running the hello world script.
Context::Scope context_scope(context);
// Create a string containing the JavaScript source code.
Handle<String> source = String::NewFromUtf8( js ); //"'Hello' + ', World!'");
// Compile the source code.
Handle<Script> script = Script::Compile(source);
// Run the script to get the result.
Handle<Value> result = script->Run();
// Dispose the persistent context.
// context.Dispose();
// Convert the result to an ASCII string and print it.
// String::AsciiValue ascii(result);
// if(*ascii){
// printf("%s\n", *ascii);
// }
return 0;
}
// Executes a string within the current v8 context.
bool ExecuteString(Handle<String> source)
{
TryCatch tryCatch;
Handle<Script> script = Script::Compile(source);
if (script.IsEmpty()) {
ReportException(&tryCatch);
return false;
} else {
Handle<Value> result = script->Run();
if (result.IsEmpty()) {
ReportException(&tryCatch);
return false;
} else {
// if(!result->IsUndefined()) {
// // If all went well and the result wasn't undefined then print
// // the returned value.
// String::Utf8Value str(result);
// const char* cstr = ToCString(str);
// printf("%s\n", cstr);
// delete cstr;
// }
return true;
}
}
}
// [[Rcpp::export]]
std::string context_eval(std::string src, Rcpp::XPtr< v8::Persistent<v8::Context> > ctx){
// Test if context still exists
if(!ctx)
throw std::runtime_error("Context has been disposed.");
// Create a scope
HandleScope handle_scope;
Context::Scope context_scope(*ctx);
// Compile source code
TryCatch trycatch;
Handle<Script> script = compile_source(src);
if(script.IsEmpty()) {
Local<Value> exception = trycatch.Exception();
String::AsciiValue exception_str(exception);
throw std::invalid_argument(*exception_str);
}
// Run the script to get the result.
Handle<Value> result = script->Run();
if(result.IsEmpty()){
Local<Value> exception = trycatch.Exception();
String::AsciiValue exception_str(exception);
throw std::runtime_error(*exception_str);
}
// Convert result to UTF8.
String::Utf8Value utf8(result);
return *utf8;
}
bool SMJS_Plugin::RunString(const char* name, const char *source, bool asGlobal){
HandleScope handle_scope(isolate);
Context::Scope context_scope(context);
TryCatch try_catch;
v8::ScriptOrigin origin(String::New(name), v8::Integer::New(0), v8::Integer::New(0));
Handle<Script> script;
if(asGlobal){
script = Script::Compile(v8::String::New(source), &origin);
}else{
char *buffer = new char[strlen(source) + 100];
strcpy(buffer, "(function(global){");
strcat(buffer, source);
strcat(buffer, "})(this);");
script = Script::Compile(v8::String::New(buffer), &origin);
delete buffer;
}
if(script.IsEmpty()) {
// Print errors that happened during compilation.
ReportException(&try_catch);
return false;
} else {
Handle<Value> result = script->Run();
if (result.IsEmpty()) {
ReportException(&try_catch);
return false;
}
return true;
}
}
jsvalue JsContext::Execute(JsScript *jsscript)
{
jsvalue v;
Locker locker(isolate_);
Isolate::Scope isolate_scope(isolate_);
(*context_)->Enter();
HandleScope scope;
TryCatch trycatch;
Handle<Script> script = (*jsscript->GetScript());
if (!script.IsEmpty()) {
Local<Value> result = script->Run();
if (result.IsEmpty())
v = engine_->ErrorFromV8(trycatch);
else
v = engine_->AnyFromV8(result);
}
(*context_)->Exit();
return v;
}
int main(int argc, char* argv[])
{
// Get the default Isolate created at startup
//Isolate* isolate = Isolate::GetCurrent();
// create a stack-allocated handle scope;
HandleScope handle_scope;
// create a new context;
Handle<Context> context = Context::New();// = Context::New(isolate);
// Enter the context for compiling and running the hello world script.
Context::Scope context_scope(context);
// create a string containing the JavaScript source code.
Handle<String> source = String::New("'Hello' + ', World!'");
// Compile the source code.
Handle<Script> script = Script::Compile(source);
// Run the script to get the result.
Handle<Value> result = script->Run();
// Convert the result to an Utf8 string and print it.
String::Utf8Value utf8(result);
printf("%s\n", *utf8);
return 0;
}
extern "C" Handle<Value> create_function(Persistent<Context> context,
char* source_s,
char* name) {
// Create a stack-allocated handle scope.
HandleScope handle_scope;
Context::Scope context_scope(context);
// Create a string containing the JavaScript source code.
Handle<String> source = String::New(source_s);
// Compile the source code.
Handle<Script> script = Script::Compile(source);
// Run the script to get the result.
Handle<Value> result = script->Run();
// magic
Handle<Object> global = context->Global();
Handle<Value> value = global->Get(String::New(name));
Handle<Function> func = v8::Handle<Function>::Cast(value);
func->SetName(String::New(name));
Persistent<Function> persistent_func = Persistent<Function>::New(func);
return persistent_func;
}
void
test_obj_propexn() {
HandleScope handle_scope;
Persistent<Context> context = Context::New();
Context::Scope context_scope(context);
Handle<Object> obj = Object::New();
obj->SetAccessor(String::New("myprop"), ReadExn, WriteExn);
Local<Object> global = context->Global();
global->Set(String::New("testobj"), obj);
Handle<String> source = String::New("var n = 0;"
"try { testobj.myprop; } catch (e) { n += e; };"
"try { testobj.myprop = (n+9); } catch (e) { n += e; }; n");
// Compile the source code.
Handle<Script> script = Script::Compile(source);
TryCatch trycatch;
// Run the script to get the result.
Handle<Value> result = script->Run();
do_check_false(result.IsEmpty());
do_check_true(result->IsInt32());
do_check_false(trycatch.HasCaught());
JSInt32 i = result->Int32Value();
do_check_eq(13, i);
context.Dispose();
}
bool
WeechatJsV8::execScript()
{
v8::TryCatch trycatch;
this->context = Context::New(NULL, this->global);
Context::Scope context_scope(this->context);
Handle<Script> script = Script::Compile(this->source);
if (script.IsEmpty())
{
PRINT_EXCEPTION;
return false;
}
else
{
Local<Value> value = script->Run();
if (value.IsEmpty())
{
PRINT_EXCEPTION;
return false;
}
}
return true;
}
void CanvasContextV8Bindings::executeJS(const std::string& _js)
{
HandleScope handle_scope;
Context::Scope context_scope(CanvasContextV8Bindings::contextV8);
Handle<v8::String> source = v8::String::New(_js.c_str());
Handle<Script> script = Script::Compile(source);
Handle<Value> result = script->Run();
}
int main(int argc, char* argv[]) {
try {
// Get user options
TCLAP::CmdLine cmd("JSLint", ' ', "0.1");
TCLAP::ValueArg<std::string> optionsArg("o", "options", "JSLint options", false, jslint::default_options(), "string", cmd);
TCLAP::UnlabeledMultiArg<std::string> filesArg("files", "file names", true, "string", cmd);
cmd.parse( argc, argv );
std::string lint_options = optionsArg.getValue();
std::vector<std::string> files = filesArg.getValue();
for (int i=0; i < files.size(); i++) {
std::string fileName = files[i];
// Create a stack-allocated handle scope.
HandleScope handle_scope;
// Create a new context.
Persistent<Context> context = Context::New();
// Enter the created context for compiling and
// running the jslint
Context::Scope context_scope(context);
try {
// Create a string containing the JavaScript source code.
Handle<String> source = jslint::load_source_js(const_cast<char *>(fileName.c_str()), lint_options);
// Compile the source code.
Handle<Script> script = Script::Compile(source);
// Run the script to get the result.
Handle<Value> result = script->Run();
// Convert the result to an ASCII string and print it.
String::AsciiValue ascii(result);
printf("%s\n", *ascii);
} catch(v8::Exception e) {
// nothing
}
// Dispose the persistent context.
context.Dispose();
}
} catch (TCLAP::ArgException &e) {
std::cerr << "error: " << e.error() << " for arg " << e.argId() << std::endl;
}
return 0;
}
Handle<Value> TiRootObject::_require(void* userContext, TiObject* caller, const Arguments& args)
{
HandleScope scope;
Local<Object> globalObject = TitaniumRuntime::getContenxt()->Global();
Handle<Value> nativeModule = TiModuleRegistry::GetModule(QString(*String::Utf8Value(args[0]->ToString())));
if(!nativeModule->IsUndefined())
{
return scope.Close(nativeModule);
}
QString fileName = Ti::TiHelper::QStringFromValue(args[0]).append(".js");
QString filePath = Ti::TiHelper::getAssetPath(fileName).prepend("app/native/");
Local<Value> existingModule = globalObject->GetHiddenValue(Ti::TiHelper::ValueFromQString(fileName)->ToString());
if(!existingModule.IsEmpty() && !existingModule->IsUndefined())
{
return scope.Close(existingModule);
}
QString js = readJsFile(filePath);
if(js.isEmpty()) {
ThrowException(String::New(
QString("Module not found ").append(fileName).toLocal8Bit().constData()
));
return scope.Close(Undefined());
}
js.prepend("(function(){"
"var __vars = {};"
"__vars.exports = {};"
"__vars.module = {exports:__vars.exports};"
"var module = __vars.module;"
"var exports = __vars.exports;");
js.append("\nreturn __vars.module.exports;"
"})();");
Handle<Script> script = Script::Compile(Ti::TiHelper::ValueFromQString(js)->ToString() , Ti::TiHelper::ValueFromQString(fileName));
TryCatch tryCatch;
if (script.IsEmpty())
{
Ti::TiErrorScreen::ShowWithTryCatch(tryCatch);
return scope.Close(Undefined());
}
Persistent<Value> result = Persistent<Value>::New(script->Run());
result.MarkIndependent();
if (result.IsEmpty())
{
Ti::TiErrorScreen::ShowWithTryCatch(tryCatch);
return scope.Close(Undefined());
}
globalObject->SetHiddenValue(Ti::TiHelper::ValueFromQString(fileName)->ToString(), result);
return scope.Close(result);
}
/** Evaluation **/
bool cJavaScript::eval ( const std::string &in, std::string &out ) {
#ifdef ENABLE_JAVASCRIPT
bool success = true;
m_strError = "";
Isolate::Scope isolate_scope ( isolate );
// Create a stack-allocated handle scope.
HandleScope handle_scope ( isolate );
// Create a template for the global object.
v8::Handle<v8::ObjectTemplate> global = v8::ObjectTemplate::New(isolate);
// Bind the global 'print' function to the C++ Print callback.
global->Set(v8::String::NewFromUtf8(isolate, "print"),
v8::FunctionTemplate::New(isolate, Print));
// Create a new context.
context = Context::New ( isolate, NULL, global );
// Enter the context for compiling and running the hello world script.
Context::Scope context_scope ( context );
std::string str = m_strAiml + in;
try {
Handle<String> source = String::NewFromUtf8 ( isolate, str.c_str ( ) );
// Compile the source code.
Handle<Script> script = Script::Compile ( source );
if ( script.IsEmpty ( ) ) {
m_strError = "JavaScript Compilation error.";
}
else {
// Run the script to get the result.
Handle<Value> result = script->Run ( );
// Convert the result to an UTF8 string and print it.
String::Utf8Value utf8 ( result );
m_strEval = *utf8;
success = true;
// printf ( "result of %s = %s\n", in.c_str ( ), str.c_str ( ) );
}
}
catch (...) {
m_strError = "Failed to compile";
}
return success;
#else
m_strError = "no JavaScript support";
return false;
#endif
}
void loadfile(std::string filename){
Context::Scope context_scope(context);
LOGI("Loading js file : %s",filename.c_str());
std::string filepath = libdir + filename;
// Create a string containing the JavaScript source code.
Handle<String> source = ReadFile(filepath.c_str());
// Compile the source code.
Handle<Script> script = Script::Compile(source);
script->Run();
LOGI("Finished Loding file.");
}
void
test_Constructor()
{
HandleScope handle_scope;
Handle<ObjectTemplate> templ = ObjectTemplate::New();
Handle<FunctionTemplate> fnT = v8::FunctionTemplate::New(AddOne);
templ->Set("AddOne", fnT);
Persistent<Context> context = Context::New(NULL, templ);
Handle<Script> script = Script::New(String::New("new AddOne(4);"));
Context::Scope scope(context);
script->Run();
}
/* Runs a compiled script */
static Handle<Value> msV8RunScript(Handle<Script> script)
{
if (script.IsEmpty()) {
ThrowException(String::New("No script to run"));
return Handle<Value>();
}
TryCatch try_catch;
Handle<Value> result = script->Run();
if (result.IsEmpty() && try_catch.HasCaught()) {
msV8ReportException(&try_catch);
}
return result;
}
void loadfile(const char * filename){
Context::Scope context_scope(context);
current_module_name = std::string(filename);
std::string full_file_path = lib_dir_path + current_module_name;
LOGI("Loading js file :");
LOGI(full_file_path.c_str());
// Create a string containing the JavaScript source code.
Handle<String> source = ReadFile(full_file_path.c_str());
// Compile the source code.
Handle<Script> script = Script::Compile(source);
script->Run();
LOGI("Finished Loding file.");
}
// Load up the JS engine
void initJsEngine(){
char path[1024];
uint32_t size = sizeof(path);
if (_NSGetExecutablePath(path, &size) != 0)
printf("buffer too small; need size %u\n", size);
string script_path;
char *pch, *next_pch;
pch = strtok(path, "/");
next_pch = strtok(NULL, "/");
//Rebuild the path, ommitting the last part (the exe name)
while (next_pch != NULL) {
script_path.append( "/" );
script_path.append( pch );
pch = next_pch;
next_pch = strtok(NULL, "/");
}
script_path.append("/script.js");
ifstream infile;
infile.open (script_path.c_str(), ifstream::in);
string file = "";
while (infile.good()){
file += (char) infile.get();
}
//Get rid of the of character
file[file.length() - 1] = ' ';
setJsFile( file.c_str() );
infile.close();
// Lock this v8 instance to this thread?
Locker locker;
HandleScope handle_scope;
Persistent<Context> context = Context::New();
Context::Scope context_scope(context);
context->Global()->Set(String::New("System"), getSystemTemplate()->NewInstance() );
context->Global()->Set(String::New("Player"), getPlayerTemplate()->NewInstance() );
context->Global()->Set(String::New("Games"), getGamesTemplate()->NewInstance() );
Handle<String> source = String::New(js_file);
Handle<Script> script = Script::Compile(source);
Handle<Value> result = script->Run();
context.Dispose();
}
void Run(const char* jsString, int len, const char* origin) {
HandleScope scope;
// Allocates a new string from either utf-8 encoded or ascii data.
// The second parameter 'length' gives the buffer length.
// If the data is utf-8 encoded, the caller must be careful to supply the
// length parameter. If it is not given, the function calls 'strlen' to
// determine the buffer length, it might be wrong if 'data' contains a null
// character.
Handle<String> source = String::New(jsString, len);
Handle<Script> script;
if (origin == NULL)
script = Script::Compile(source);
else
script = Script::Compile(source, String::New(origin));
script->Run();
}
V8Context::V8Context(
int time_limit,
const char* flags,
bool enable_blessing_,
const char* bless_prefix_
)
: time_limit_(time_limit),
bless_prefix(bless_prefix_),
enable_blessing(enable_blessing_)
{
isolate = Isolate::New();
Isolate::Scope isolate_scope(isolate);
Locker locker(isolate);
HandleScope handle_scope;
V8::SetFlagsFromString(flags, strlen(flags));
context = Persistent<Context>::New(isolate, Context::New(isolate));
Context::Scope context_scope(context);
V8Thread::install(context->Global());
Local<FunctionTemplate> tmpl = FunctionTemplate::New(PerlFunctionData::v8invoke);
context->Global()->Set(
String::New("__perlFunctionWrapper"),
tmpl->GetFunction()
);
Handle<Script> script = Script::Compile(
String::New(
"(function(wrap) {"
" return function() {"
" var args = Array.prototype.slice.call(arguments);"
" args.unshift(wrap);"
" return __perlFunctionWrapper.apply(this, args)"
" };"
"})"
)
);
make_function = Persistent<Function>::New(isolate, Handle<Function>::Cast(script->Run()));
string_wrap = Persistent<String>::New(isolate, String::New("wrap"));
string_to_js = Persistent<String>::New(isolate, String::New("to_js"));
number++;
}
bool V8Scope::exec( const string& code , const string& name , bool printResult , bool reportError , bool assertOnError, int timeoutMs ){
if ( timeoutMs ){
static bool t = 1;
if ( t ){
log() << "timeoutMs not support for v8 yet" << endl;
t = 0;
}
}
HandleScope handle_scope;
TryCatch try_catch;
Handle<Script> script = v8::Script::Compile( v8::String::New( code.c_str() ) ,
v8::String::New( name.c_str() ) );
if (script.IsEmpty()) {
stringstream ss;
ss << "compile error: " << toSTLString( &try_catch );
_error = ss.str();
if (reportError)
log() << _error << endl;
if ( assertOnError )
uassert( _error , 0 );
return false;
}
Handle<v8::Value> result = script->Run();
if ( result.IsEmpty() ){
_error = (string)"exec error: " + toSTLString( &try_catch );
if ( reportError )
log() << _error << endl;
if ( assertOnError )
uassert( _error , 0 );
return false;
}
_global->Set( v8::String::New( "__lastres__" ) , result );
if ( printResult && ! result->IsUndefined() ){
cout << toSTLString( result ) << endl;
}
return true;
}
