diff options
Diffstat (limited to 'src/binding.cc')
-rw-r--r-- | src/binding.cc | 415 |
1 files changed, 0 insertions, 415 deletions
diff --git a/src/binding.cc b/src/binding.cc deleted file mode 100644 index 0a107c95f..000000000 --- a/src/binding.cc +++ /dev/null @@ -1,415 +0,0 @@ -// Copyright 2018 the Deno authors. All rights reserved. MIT license. -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <string> - -#include "third_party/v8/include/libplatform/libplatform.h" -#include "third_party/v8/include/v8.h" -#include "third_party/v8/src/base/logging.h" - -#include "deno.h" -#include "internal.h" - -namespace deno { - -static bool skip_onerror = false; - -Deno* FromIsolate(v8::Isolate* isolate) { - return static_cast<Deno*>(isolate->GetData(0)); -} - -// Extracts a C string from a v8::V8 Utf8Value. -const char* ToCString(const v8::String::Utf8Value& value) { - return *value ? *value : "<string conversion failed>"; -} - -static inline v8::Local<v8::String> v8_str(const char* x) { - return v8::String::NewFromUtf8(v8::Isolate::GetCurrent(), x, - v8::NewStringType::kNormal) - .ToLocalChecked(); -} - -void HandleExceptionStr(v8::Local<v8::Context> context, - v8::Local<v8::Value> exception, - std::string* exception_str) { - auto* isolate = context->GetIsolate(); - v8::HandleScope handle_scope(isolate); - v8::Context::Scope context_scope(context); - - auto message = v8::Exception::CreateMessage(isolate, exception); - auto onerrorStr = v8::String::NewFromUtf8(isolate, "onerror"); - auto onerror = context->Global()->Get(onerrorStr); - auto stack_trace = message->GetStackTrace(); - auto line = - v8::Integer::New(isolate, message->GetLineNumber(context).FromJust()); - auto column = - v8::Integer::New(isolate, message->GetStartColumn(context).FromJust()); - - if (skip_onerror == false) { - if (onerror->IsFunction()) { - // window.onerror is set so we try to handle the exception in javascript. - auto func = v8::Local<v8::Function>::Cast(onerror); - v8::Local<v8::Value> args[5]; - args[0] = exception->ToString(); - args[1] = message->GetScriptResourceName(); - args[2] = line; - args[3] = column; - args[4] = exception; - func->Call(context->Global(), 5, args); - /* message, source, lineno, colno, error */ - } - } - - char buf[12 * 1024]; - if (!stack_trace.IsEmpty()) { - // No javascript onerror handler, but we do have a stack trace. Format it - // into a string and add to last_exception. - std::string msg; - v8::String::Utf8Value exceptionStr(isolate, exception); - msg += ToCString(exceptionStr); - msg += "\n"; - - for (int i = 0; i < stack_trace->GetFrameCount(); ++i) { - auto frame = stack_trace->GetFrame(i); - v8::String::Utf8Value script_name(isolate, frame->GetScriptName()); - int l = frame->GetLineNumber(); - int c = frame->GetColumn(); - snprintf(buf, sizeof(buf), "%s %d:%d\n", ToCString(script_name), l, c); - msg += buf; - } - *exception_str += msg; - } else { - // No javascript onerror handler, no stack trace. Format the little info we - // have into a string and add to last_exception. - v8::String::Utf8Value exceptionStr(isolate, exception); - v8::String::Utf8Value script_name(isolate, - message->GetScriptResourceName()); - v8::String::Utf8Value line_str(isolate, line); - v8::String::Utf8Value col_str(isolate, column); - snprintf(buf, sizeof(buf), "%s\n%s %s:%s\n", ToCString(exceptionStr), - ToCString(script_name), ToCString(line_str), ToCString(col_str)); - *exception_str += buf; - } -} - -void HandleException(v8::Local<v8::Context> context, - v8::Local<v8::Value> exception) { - v8::Isolate* isolate = context->GetIsolate(); - Deno* d = FromIsolate(isolate); - std::string exception_str; - HandleExceptionStr(context, exception, &exception_str); - if (d != nullptr) { - d->last_exception = exception_str; - } else { - printf("Pre-Deno Exception %s\n", exception_str.c_str()); - exit(1); - } -} - -/* -bool AbortOnUncaughtExceptionCallback(v8::Isolate* isolate) { - return true; -} - -void MessageCallback2(Local<Message> message, v8::Local<v8::Value> data) { - printf("MessageCallback2\n\n"); -} - -void FatalErrorCallback2(const char* location, const char* message) { - printf("FatalErrorCallback2\n"); -} -*/ - -void ExitOnPromiseRejectCallback( - v8::PromiseRejectMessage promise_reject_message) { - auto* isolate = v8::Isolate::GetCurrent(); - Deno* d = static_cast<Deno*>(isolate->GetData(0)); - DCHECK_EQ(d->isolate, isolate); - v8::HandleScope handle_scope(d->isolate); - auto exception = promise_reject_message.GetValue(); - auto context = d->context.Get(d->isolate); - HandleException(context, exception); -} - -void Print(const v8::FunctionCallbackInfo<v8::Value>& args) { - CHECK_EQ(args.Length(), 1); - auto* isolate = args.GetIsolate(); - v8::HandleScope handle_scope(isolate); - v8::String::Utf8Value str(isolate, args[0]); - const char* cstr = ToCString(str); - printf("%s\n", cstr); - fflush(stdout); -} - -static v8::Local<v8::Uint8Array> ImportBuf(v8::Isolate* isolate, deno_buf buf) { - if (buf.alloc_ptr == nullptr) { - // If alloc_ptr isn't set, we memcpy. - // This is currently used for flatbuffers created in Rust. - auto ab = v8::ArrayBuffer::New(isolate, buf.data_len); - memcpy(ab->GetContents().Data(), buf.data_ptr, buf.data_len); - auto view = v8::Uint8Array::New(ab, 0, buf.data_len); - return view; - } else { - auto ab = v8::ArrayBuffer::New( - isolate, reinterpret_cast<void*>(buf.alloc_ptr), buf.alloc_len, - v8::ArrayBufferCreationMode::kInternalized); - auto view = - v8::Uint8Array::New(ab, buf.data_ptr - buf.alloc_ptr, buf.data_len); - return view; - } -} - -static deno_buf ExportBuf(v8::Isolate* isolate, - v8::Local<v8::ArrayBufferView> view) { - auto ab = view->Buffer(); - auto contents = ab->Externalize(); - - deno_buf buf; - buf.alloc_ptr = reinterpret_cast<uint8_t*>(contents.Data()); - buf.alloc_len = contents.ByteLength(); - buf.data_ptr = buf.alloc_ptr + view->ByteOffset(); - buf.data_len = view->ByteLength(); - - // Prevent JS from modifying buffer contents after exporting. - ab->Neuter(); - - return buf; -} - -static void FreeBuf(deno_buf buf) { free(buf.alloc_ptr); } - -// Sets the recv callback. -void Recv(const v8::FunctionCallbackInfo<v8::Value>& args) { - v8::Isolate* isolate = args.GetIsolate(); - Deno* d = reinterpret_cast<Deno*>(isolate->GetData(0)); - DCHECK_EQ(d->isolate, isolate); - - v8::HandleScope handle_scope(isolate); - - if (!d->recv.IsEmpty()) { - isolate->ThrowException(v8_str("deno.recv already called.")); - return; - } - - v8::Local<v8::Value> v = args[0]; - CHECK(v->IsFunction()); - v8::Local<v8::Function> func = v8::Local<v8::Function>::Cast(v); - - d->recv.Reset(isolate, func); -} - -void Send(const v8::FunctionCallbackInfo<v8::Value>& args) { - v8::Isolate* isolate = args.GetIsolate(); - Deno* d = static_cast<Deno*>(isolate->GetData(0)); - DCHECK_EQ(d->isolate, isolate); - - v8::Locker locker(d->isolate); - v8::EscapableHandleScope handle_scope(isolate); - - CHECK_EQ(args.Length(), 1); - v8::Local<v8::Value> ab_v = args[0]; - CHECK(ab_v->IsArrayBufferView()); - auto buf = ExportBuf(isolate, v8::Local<v8::ArrayBufferView>::Cast(ab_v)); - - DCHECK_EQ(d->currentArgs, nullptr); - d->currentArgs = &args; - - d->cb(d, buf); - - // Buffer is only valid until the end of the callback. - // TODO(piscisaureus): - // It's possible that data in the buffer is needed after the callback - // returns, e.g. when the handler offloads work to a thread pool, therefore - // make the callback responsible for releasing the buffer. - FreeBuf(buf); - - d->currentArgs = nullptr; -} - -bool ExecuteV8StringSource(v8::Local<v8::Context> context, - const char* js_filename, - v8::Local<v8::String> source) { - auto* isolate = context->GetIsolate(); - v8::Isolate::Scope isolate_scope(isolate); - v8::HandleScope handle_scope(isolate); - - v8::Context::Scope context_scope(context); - - v8::TryCatch try_catch(isolate); - - auto name = v8_str(js_filename); - - v8::ScriptOrigin origin(name); - - auto script = v8::Script::Compile(context, source, &origin); - - if (script.IsEmpty()) { - DCHECK(try_catch.HasCaught()); - HandleException(context, try_catch.Exception()); - return false; - } - - auto result = script.ToLocalChecked()->Run(context); - - if (result.IsEmpty()) { - DCHECK(try_catch.HasCaught()); - HandleException(context, try_catch.Exception()); - return false; - } - - return true; -} - -bool Execute(v8::Local<v8::Context> context, const char* js_filename, - const char* js_source) { - auto* isolate = context->GetIsolate(); - v8::Isolate::Scope isolate_scope(isolate); - v8::HandleScope handle_scope(isolate); - auto source = v8_str(js_source); - return ExecuteV8StringSource(context, js_filename, source); -} - -void InitializeContext(v8::Isolate* isolate, v8::Local<v8::Context> context, - const char* js_filename, const std::string& js_source, - const std::string* source_map) { - v8::HandleScope handle_scope(isolate); - v8::Context::Scope context_scope(context); - - auto global = context->Global(); - - auto deno_val = v8::Object::New(isolate); - CHECK(global->Set(context, deno::v8_str("libdeno"), deno_val).FromJust()); - - auto print_tmpl = v8::FunctionTemplate::New(isolate, Print); - auto print_val = print_tmpl->GetFunction(context).ToLocalChecked(); - CHECK(deno_val->Set(context, deno::v8_str("print"), print_val).FromJust()); - - auto recv_tmpl = v8::FunctionTemplate::New(isolate, Recv); - auto recv_val = recv_tmpl->GetFunction(context).ToLocalChecked(); - CHECK(deno_val->Set(context, deno::v8_str("recv"), recv_val).FromJust()); - - auto send_tmpl = v8::FunctionTemplate::New(isolate, Send); - auto send_val = send_tmpl->GetFunction(context).ToLocalChecked(); - CHECK(deno_val->Set(context, deno::v8_str("send"), send_val).FromJust()); - - skip_onerror = true; - { - auto source = deno::v8_str(js_source.c_str()); - CHECK( - deno_val->Set(context, deno::v8_str("mainSource"), source).FromJust()); - - bool r = deno::ExecuteV8StringSource(context, js_filename, source); - CHECK(r); - - if (source_map != nullptr) { - CHECK_GT(source_map->length(), 1u); - v8::TryCatch try_catch(isolate); - v8::ScriptOrigin origin(v8_str("set_source_map.js")); - std::string source_map_parens = "(" + *source_map + ")"; - auto source_map_v8_str = deno::v8_str(source_map_parens.c_str()); - auto script = v8::Script::Compile(context, source_map_v8_str, &origin); - if (script.IsEmpty()) { - DCHECK(try_catch.HasCaught()); - HandleException(context, try_catch.Exception()); - return; - } - auto source_map_obj = script.ToLocalChecked()->Run(context); - if (source_map_obj.IsEmpty()) { - DCHECK(try_catch.HasCaught()); - HandleException(context, try_catch.Exception()); - return; - } - CHECK(deno_val - ->Set(context, deno::v8_str("mainSourceMap"), - source_map_obj.ToLocalChecked()) - .FromJust()); - } - } - skip_onerror = false; -} - -void AddIsolate(Deno* d, v8::Isolate* isolate) { - d->isolate = isolate; - // Leaving this code here because it will probably be useful later on, but - // disabling it now as I haven't got tests for the desired behavior. - // d->isolate->SetCaptureStackTraceForUncaughtExceptions(true); - // d->isolate->SetAbortOnUncaughtExceptionCallback(AbortOnUncaughtExceptionCallback); - // d->isolate->AddMessageListener(MessageCallback2); - // d->isolate->SetFatalErrorHandler(FatalErrorCallback2); - d->isolate->SetPromiseRejectCallback(deno::ExitOnPromiseRejectCallback); - d->isolate->SetData(0, d); -} - -} // namespace deno - -extern "C" { - -void deno_init() { - // v8::V8::InitializeICUDefaultLocation(argv[0]); - // v8::V8::InitializeExternalStartupData(argv[0]); - auto* p = v8::platform::CreateDefaultPlatform(); - v8::V8::InitializePlatform(p); - v8::V8::Initialize(); -} - -void* deno_get_data(Deno* d) { return d->data; } - -const char* deno_v8_version() { return v8::V8::GetVersion(); } - -void deno_set_flags(int* argc, char** argv) { - v8::V8::SetFlagsFromCommandLine(argc, argv, true); -} - -const char* deno_last_exception(Deno* d) { return d->last_exception.c_str(); } - -int deno_execute(Deno* d, const char* js_filename, const char* js_source) { - auto* isolate = d->isolate; - v8::Locker locker(isolate); - v8::Isolate::Scope isolate_scope(isolate); - v8::HandleScope handle_scope(isolate); - auto context = d->context.Get(d->isolate); - return deno::Execute(context, js_filename, js_source) ? 1 : 0; -} - -int deno_send(Deno* d, deno_buf buf) { - v8::Locker locker(d->isolate); - v8::Isolate::Scope isolate_scope(d->isolate); - v8::HandleScope handle_scope(d->isolate); - - auto context = d->context.Get(d->isolate); - v8::Context::Scope context_scope(context); - - v8::TryCatch try_catch(d->isolate); - - auto recv = d->recv.Get(d->isolate); - if (recv.IsEmpty()) { - d->last_exception = "deno.recv has not been called."; - return 0; - } - - v8::Local<v8::Value> args[1]; - args[0] = deno::ImportBuf(d->isolate, buf); - recv->Call(context->Global(), 1, args); - - if (try_catch.HasCaught()) { - deno::HandleException(context, try_catch.Exception()); - return 0; - } - - return 1; -} - -void deno_set_response(Deno* d, deno_buf buf) { - auto ab = deno::ImportBuf(d->isolate, buf); - d->currentArgs->GetReturnValue().Set(ab); -} - -void deno_delete(Deno* d) { - d->isolate->Dispose(); - delete d; -} - -void deno_terminate_execution(Deno* d) { d->isolate->TerminateExecution(); } - -} // extern "C" |