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v8go.cc
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// Copyright 2019 Roger Chapman and the v8go contributors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "v8go.h"
#include <stdio.h>
#include <cstdlib>
#include <cstring>
#include <iostream>
#include <sstream>
#include <string>
#include <vector>
#include "_cgo_export.h"
using namespace v8;
auto default_platform = platform::NewDefaultPlatform();
auto default_allocator = ArrayBuffer::Allocator::NewDefaultAllocator();
const int ScriptCompilerNoCompileOptions = ScriptCompiler::kNoCompileOptions;
const int ScriptCompilerConsumeCodeCache = ScriptCompiler::kConsumeCodeCache;
const int ScriptCompilerEagerCompile = ScriptCompiler::kEagerCompile;
struct m_ctx {
Isolate* iso;
std::vector<m_value*> vals;
std::vector<m_unboundScript*> unboundScripts;
Persistent<Context> ptr;
};
struct m_value {
Isolate* iso;
m_ctx* ctx;
Persistent<Value, CopyablePersistentTraits<Value>> ptr;
};
struct m_template {
Isolate* iso;
Persistent<Template> ptr;
};
struct m_unboundScript {
Persistent<UnboundScript> ptr;
};
const char* CopyString(std::string str) {
int len = str.length();
char* mem = (char*)malloc(len + 1);
memcpy(mem, str.data(), len);
mem[len] = 0;
return mem;
}
const char* CopyString(String::Utf8Value& value) {
if (value.length() == 0) {
return nullptr;
}
return CopyString(std::string(*value, value.length()));
}
static RtnError ExceptionError(TryCatch& try_catch,
Isolate* iso,
Local<Context> ctx) {
HandleScope handle_scope(iso);
RtnError rtn = {nullptr, nullptr, nullptr};
if (try_catch.HasTerminated()) {
rtn.msg =
CopyString("ExecutionTerminated: script execution has been terminated");
return rtn;
}
String::Utf8Value exception(iso, try_catch.Exception());
rtn.msg = CopyString(exception);
Local<Message> msg = try_catch.Message();
if (!msg.IsEmpty()) {
String::Utf8Value origin(iso, msg->GetScriptOrigin().ResourceName());
std::ostringstream sb;
sb << *origin;
Maybe<int> line = try_catch.Message()->GetLineNumber(ctx);
if (line.IsJust()) {
sb << ":" << line.ToChecked();
}
Maybe<int> start = try_catch.Message()->GetStartColumn(ctx);
if (start.IsJust()) {
sb << ":"
<< start.ToChecked() + 1; // + 1 to match output from stack trace
}
rtn.location = CopyString(sb.str());
}
Local<Value> mstack;
if (try_catch.StackTrace(ctx).ToLocal(&mstack)) {
String::Utf8Value stack(iso, mstack);
rtn.stack = CopyString(stack);
}
return rtn;
}
m_value* tracked_value(m_ctx* ctx, m_value* val) {
// (rogchap) we track values against a context so that when the context is
// closed (either manually or GC'd by Go) we can also release all the
// values associated with the context; previously the Go GC would not run
// quickly enough, as it has no understanding of the C memory allocation size.
// By doing so we hold pointers to all values that are created/returned to Go
// until the context is released; this is a compromise.
// Ideally we would be able to delete the value object and cancel the
// finalizer on the Go side, but we currently don't pass the Go ptr, but
// rather the C ptr. A potential future iteration would be to use an
// unordered_map, where we could do O(1) lookups for the value, but then know
// if the object has been finalized or not by being in the map or not. This
// would require some ref id for the value rather than passing the ptr between
// Go <--> C, which would be a significant change, as there are places where
// we get the context from the value, but if we then need the context to get
// the value, we would be in a circular bind.
ctx->vals.push_back(val);
return val;
}
m_unboundScript* tracked_unbound_script(m_ctx* ctx, m_unboundScript* us) {
ctx->unboundScripts.push_back(us);
return us;
}
extern "C" {
/********** Isolate **********/
#define ISOLATE_SCOPE(iso) \
Locker locker(iso); \
Isolate::Scope isolate_scope(iso); \
HandleScope handle_scope(iso);
#define ISOLATE_SCOPE_INTERNAL_CONTEXT(iso) \
ISOLATE_SCOPE(iso); \
m_ctx* ctx = isolateInternalContext(iso);
void Init() {
#ifdef _WIN32
V8::InitializeExternalStartupData(".");
#endif
V8::InitializePlatform(default_platform.get());
V8::Initialize();
return;
}
IsolatePtr NewIsolate() {
Isolate::CreateParams params;
params.array_buffer_allocator = default_allocator;
Isolate* iso = Isolate::New(params);
Locker locker(iso);
Isolate::Scope isolate_scope(iso);
HandleScope handle_scope(iso);
iso->SetCaptureStackTraceForUncaughtExceptions(true);
// Create a Context for internal use
m_ctx* ctx = new m_ctx;
ctx->ptr.Reset(iso, Context::New(iso));
ctx->iso = iso;
iso->SetData(0, ctx);
return iso;
}
static inline m_ctx* isolateInternalContext(Isolate* iso) {
return static_cast<m_ctx*>(iso->GetData(0));
}
void IsolatePerformMicrotaskCheckpoint(IsolatePtr iso) {
ISOLATE_SCOPE(iso)
iso->PerformMicrotaskCheckpoint();
}
void IsolateDispose(IsolatePtr iso) {
if (iso == nullptr) {
return;
}
ContextFree(isolateInternalContext(iso));
iso->Dispose();
}
void IsolateTerminateExecution(IsolatePtr iso) {
iso->TerminateExecution();
}
int IsolateIsExecutionTerminating(IsolatePtr iso) {
return iso->IsExecutionTerminating();
}
IsolateHStatistics IsolationGetHeapStatistics(IsolatePtr iso) {
if (iso == nullptr) {
return IsolateHStatistics{0};
}
v8::HeapStatistics hs;
iso->GetHeapStatistics(&hs);
return IsolateHStatistics{hs.total_heap_size(),
hs.total_heap_size_executable(),
hs.total_physical_size(),
hs.total_available_size(),
hs.used_heap_size(),
hs.heap_size_limit(),
hs.malloced_memory(),
hs.external_memory(),
hs.peak_malloced_memory(),
hs.number_of_native_contexts(),
hs.number_of_detached_contexts()};
}
RtnUnboundScript IsolateCompileUnboundScript(IsolatePtr iso,
const char* s,
const char* o,
CompileOptions opts) {
ISOLATE_SCOPE_INTERNAL_CONTEXT(iso);
TryCatch try_catch(iso);
Local<Context> local_ctx = ctx->ptr.Get(iso);
Context::Scope context_scope(local_ctx);
RtnUnboundScript rtn = {};
Local<String> src =
String::NewFromUtf8(iso, s, NewStringType::kNormal).ToLocalChecked();
Local<String> ogn =
String::NewFromUtf8(iso, o, NewStringType::kNormal).ToLocalChecked();
ScriptCompiler::CompileOptions option =
static_cast<ScriptCompiler::CompileOptions>(opts.compileOption);
ScriptCompiler::CachedData* cached_data = nullptr;
if (opts.cachedData.data) {
cached_data = new ScriptCompiler::CachedData(opts.cachedData.data,
opts.cachedData.length);
}
ScriptOrigin script_origin(ogn);
ScriptCompiler::Source source(src, script_origin, cached_data);
Local<UnboundScript> unbound_script;
if (!ScriptCompiler::CompileUnboundScript(iso, &source, option)
.ToLocal(&unbound_script)) {
rtn.error = ExceptionError(try_catch, iso, local_ctx);
return rtn;
};
if (cached_data) {
rtn.cachedDataRejected = cached_data->rejected;
}
m_unboundScript* us = new m_unboundScript;
us->ptr.Reset(iso, unbound_script);
rtn.ptr = tracked_unbound_script(ctx, us);
return rtn;
}
/********** Exceptions & Errors **********/
ValuePtr IsolateThrowException(IsolatePtr iso, ValuePtr value) {
ISOLATE_SCOPE(iso);
m_ctx* ctx = value->ctx;
Local<Value> throw_ret_val = iso->ThrowException(value->ptr.Get(iso));
m_value* new_val = new m_value;
new_val->iso = iso;
new_val->ctx = ctx;
new_val->ptr =
Persistent<Value, CopyablePersistentTraits<Value>>(iso, throw_ret_val);
return tracked_value(ctx, new_val);
}
/********** CpuProfiler **********/
CPUProfiler* NewCPUProfiler(IsolatePtr iso_ptr) {
Isolate* iso = static_cast<Isolate*>(iso_ptr);
Locker locker(iso);
Isolate::Scope isolate_scope(iso);
HandleScope handle_scope(iso);
CPUProfiler* c = new CPUProfiler;
c->iso = iso;
c->ptr = CpuProfiler::New(iso);
return c;
}
void CPUProfilerDispose(CPUProfiler* profiler) {
if (profiler->ptr == nullptr) {
return;
}
profiler->ptr->Dispose();
delete profiler;
}
void CPUProfilerStartProfiling(CPUProfiler* profiler, const char* title) {
if (profiler->iso == nullptr) {
return;
}
Locker locker(profiler->iso);
Isolate::Scope isolate_scope(profiler->iso);
HandleScope handle_scope(profiler->iso);
Local<String> title_str =
String::NewFromUtf8(profiler->iso, title, NewStringType::kNormal)
.ToLocalChecked();
profiler->ptr->StartProfiling(title_str);
}
CPUProfileNode* NewCPUProfileNode(const CpuProfileNode* ptr_) {
int count = ptr_->GetChildrenCount();
CPUProfileNode** children = new CPUProfileNode*[count];
for (int i = 0; i < count; ++i) {
children[i] = NewCPUProfileNode(ptr_->GetChild(i));
}
CPUProfileNode* root = new CPUProfileNode{
ptr_,
ptr_->GetNodeId(),
ptr_->GetScriptId(),
ptr_->GetScriptResourceNameStr(),
ptr_->GetFunctionNameStr(),
ptr_->GetLineNumber(),
ptr_->GetColumnNumber(),
ptr_->GetHitCount(),
ptr_->GetBailoutReason(),
count,
children,
};
return root;
}
CPUProfile* CPUProfilerStopProfiling(CPUProfiler* profiler, const char* title) {
if (profiler->iso == nullptr) {
return nullptr;
}
Locker locker(profiler->iso);
Isolate::Scope isolate_scope(profiler->iso);
HandleScope handle_scope(profiler->iso);
Local<String> title_str =
String::NewFromUtf8(profiler->iso, title, NewStringType::kNormal)
.ToLocalChecked();
CPUProfile* profile = new CPUProfile;
profile->ptr = profiler->ptr->StopProfiling(title_str);
Local<String> str = profile->ptr->GetTitle();
String::Utf8Value t(profiler->iso, str);
profile->title = CopyString(t);
CPUProfileNode* root = NewCPUProfileNode(profile->ptr->GetTopDownRoot());
profile->root = root;
profile->startTime = profile->ptr->GetStartTime();
profile->endTime = profile->ptr->GetEndTime();
return profile;
}
void CPUProfileNodeDelete(CPUProfileNode* node) {
for (int i = 0; i < node->childrenCount; ++i) {
CPUProfileNodeDelete(node->children[i]);
}
delete[] node->children;
delete node;
}
void CPUProfileDelete(CPUProfile* profile) {
if (profile->ptr == nullptr) {
return;
}
profile->ptr->Delete();
free((void*)profile->title);
CPUProfileNodeDelete(profile->root);
delete profile;
}
/********** Template **********/
#define LOCAL_TEMPLATE(tmpl_ptr) \
Isolate* iso = tmpl_ptr->iso; \
Locker locker(iso); \
Isolate::Scope isolate_scope(iso); \
HandleScope handle_scope(iso); \
Local<Template> tmpl = tmpl_ptr->ptr.Get(iso);
void TemplateFreeWrapper(TemplatePtr tmpl) {
tmpl->ptr.Empty(); // Just does `val_ = 0;` without calling V8::DisposeGlobal
delete tmpl;
}
void TemplateSetValue(TemplatePtr ptr,
const char* name,
ValuePtr val,
int attributes) {
LOCAL_TEMPLATE(ptr);
Local<String> prop_name =
String::NewFromUtf8(iso, name, NewStringType::kNormal).ToLocalChecked();
tmpl->Set(prop_name, val->ptr.Get(iso), (PropertyAttribute)attributes);
}
void TemplateSetTemplate(TemplatePtr ptr,
const char* name,
TemplatePtr obj,
int attributes) {
LOCAL_TEMPLATE(ptr);
Local<String> prop_name =
String::NewFromUtf8(iso, name, NewStringType::kNormal).ToLocalChecked();
tmpl->Set(prop_name, obj->ptr.Get(iso), (PropertyAttribute)attributes);
}
/********** ObjectTemplate **********/
TemplatePtr NewObjectTemplate(IsolatePtr iso) {
Locker locker(iso);
Isolate::Scope isolate_scope(iso);
HandleScope handle_scope(iso);
m_template* ot = new m_template;
ot->iso = iso;
ot->ptr.Reset(iso, ObjectTemplate::New(iso));
return ot;
}
RtnValue ObjectTemplateNewInstance(TemplatePtr ptr, ContextPtr ctx) {
LOCAL_TEMPLATE(ptr);
TryCatch try_catch(iso);
Local<Context> local_ctx = ctx->ptr.Get(iso);
Context::Scope context_scope(local_ctx);
RtnValue rtn = {};
Local<ObjectTemplate> obj_tmpl = tmpl.As<ObjectTemplate>();
Local<Object> obj;
if (!obj_tmpl->NewInstance(local_ctx).ToLocal(&obj)) {
rtn.error = ExceptionError(try_catch, iso, local_ctx);
return rtn;
}
m_value* val = new m_value;
val->iso = iso;
val->ctx = ctx;
val->ptr = Persistent<Value, CopyablePersistentTraits<Value>>(iso, obj);
rtn.value = tracked_value(ctx, val);
return rtn;
}
void ObjectTemplateSetInternalFieldCount(TemplatePtr ptr, int field_count) {
LOCAL_TEMPLATE(ptr);
Local<ObjectTemplate> obj_tmpl = tmpl.As<ObjectTemplate>();
obj_tmpl->SetInternalFieldCount(field_count);
}
int ObjectTemplateInternalFieldCount(TemplatePtr ptr) {
LOCAL_TEMPLATE(ptr);
Local<ObjectTemplate> obj_tmpl = tmpl.As<ObjectTemplate>();
return obj_tmpl->InternalFieldCount();
}
/********** FunctionTemplate **********/
static void FunctionTemplateCallback(const FunctionCallbackInfo<Value>& info) {
Isolate* iso = info.GetIsolate();
ISOLATE_SCOPE(iso);
// This callback function can be called from any Context, which we only know
// at runtime. We extract the Context reference from the embedder data so that
// we can use the context registry to match the Context on the Go side
Local<Context> local_ctx = iso->GetCurrentContext();
int ctx_ref = local_ctx->GetEmbedderData(1).As<Integer>()->Value();
m_ctx* ctx = goContext(ctx_ref);
int callback_ref = info.Data().As<Integer>()->Value();
m_value* _this = new m_value;
_this->iso = iso;
_this->ctx = ctx;
_this->ptr.Reset(iso, Persistent<Value, CopyablePersistentTraits<Value>>(
iso, info.This()));
int args_count = info.Length();
ValuePtr thisAndArgs[args_count + 1];
thisAndArgs[0] = tracked_value(ctx, _this);
ValuePtr* args = thisAndArgs + 1;
for (int i = 0; i < args_count; i++) {
m_value* val = new m_value;
val->iso = iso;
val->ctx = ctx;
val->ptr.Reset(
iso, Persistent<Value, CopyablePersistentTraits<Value>>(iso, info[i]));
args[i] = tracked_value(ctx, val);
}
ValuePtr val =
goFunctionCallback(ctx_ref, callback_ref, thisAndArgs, args_count);
if (val != nullptr) {
info.GetReturnValue().Set(val->ptr.Get(iso));
} else {
info.GetReturnValue().SetUndefined();
}
}
TemplatePtr NewFunctionTemplate(IsolatePtr iso, int callback_ref) {
Locker locker(iso);
Isolate::Scope isolate_scope(iso);
HandleScope handle_scope(iso);
// (rogchap) We only need to store one value, callback_ref, into the
// C++ callback function data, but if we needed to store more items we could
// use an V8::Array; this would require the internal context from
// iso->GetData(0)
Local<Integer> cbData = Integer::New(iso, callback_ref);
m_template* ot = new m_template;
ot->iso = iso;
ot->ptr.Reset(iso,
FunctionTemplate::New(iso, FunctionTemplateCallback, cbData));
return ot;
}
RtnValue FunctionTemplateGetFunction(TemplatePtr ptr, ContextPtr ctx) {
LOCAL_TEMPLATE(ptr);
TryCatch try_catch(iso);
Local<Context> local_ctx = ctx->ptr.Get(iso);
Context::Scope context_scope(local_ctx);
Local<FunctionTemplate> fn_tmpl = tmpl.As<FunctionTemplate>();
RtnValue rtn = {};
Local<Function> fn;
if (!fn_tmpl->GetFunction(local_ctx).ToLocal(&fn)) {
rtn.error = ExceptionError(try_catch, iso, local_ctx);
return rtn;
}
m_value* val = new m_value;
val->iso = iso;
val->ctx = ctx;
val->ptr = Persistent<Value, CopyablePersistentTraits<Value>>(iso, fn);
rtn.value = tracked_value(ctx, val);
return rtn;
}
/********** Context **********/
#define LOCAL_CONTEXT(ctx) \
Isolate* iso = ctx->iso; \
Locker locker(iso); \
Isolate::Scope isolate_scope(iso); \
HandleScope handle_scope(iso); \
TryCatch try_catch(iso); \
Local<Context> local_ctx = ctx->ptr.Get(iso); \
Context::Scope context_scope(local_ctx);
ContextPtr NewContext(IsolatePtr iso,
TemplatePtr global_template_ptr,
int ref) {
Locker locker(iso);
Isolate::Scope isolate_scope(iso);
HandleScope handle_scope(iso);
Local<ObjectTemplate> global_template;
if (global_template_ptr != nullptr) {
global_template = global_template_ptr->ptr.Get(iso).As<ObjectTemplate>();
} else {
global_template = ObjectTemplate::New(iso);
}
// For function callbacks we need a reference to the context, but because of
// the complexities of C -> Go function pointers, we store a reference to the
// context as a simple integer identifier; this can then be used on the Go
// side to lookup the context in the context registry. We use slot 1 as slot 0
// has special meaning for the Chrome debugger.
Local<Context> local_ctx = Context::New(iso, nullptr, global_template);
local_ctx->SetEmbedderData(1, Integer::New(iso, ref));
m_ctx* ctx = new m_ctx;
ctx->ptr.Reset(iso, local_ctx);
ctx->iso = iso;
return ctx;
}
void ContextFree(ContextPtr ctx) {
if (ctx == nullptr) {
return;
}
ctx->ptr.Reset();
for (m_value* val : ctx->vals) {
val->ptr.Reset();
delete val;
}
for (m_unboundScript* us : ctx->unboundScripts) {
us->ptr.Reset();
delete us;
}
delete ctx;
}
RtnValue RunScript(ContextPtr ctx, const char* source, const char* origin) {
LOCAL_CONTEXT(ctx);
RtnValue rtn = {};
MaybeLocal<String> maybeSrc =
String::NewFromUtf8(iso, source, NewStringType::kNormal);
MaybeLocal<String> maybeOgn =
String::NewFromUtf8(iso, origin, NewStringType::kNormal);
Local<String> src, ogn;
if (!maybeSrc.ToLocal(&src) || !maybeOgn.ToLocal(&ogn)) {
rtn.error = ExceptionError(try_catch, iso, local_ctx);
return rtn;
}
ScriptOrigin script_origin(ogn);
Local<Script> script;
if (!Script::Compile(local_ctx, src, &script_origin).ToLocal(&script)) {
rtn.error = ExceptionError(try_catch, iso, local_ctx);
return rtn;
}
Local<Value> result;
if (!script->Run(local_ctx).ToLocal(&result)) {
rtn.error = ExceptionError(try_catch, iso, local_ctx);
return rtn;
}
m_value* val = new m_value;
val->iso = iso;
val->ctx = ctx;
val->ptr = Persistent<Value, CopyablePersistentTraits<Value>>(iso, result);
rtn.value = tracked_value(ctx, val);
return rtn;
}
/********** UnboundScript & ScriptCompilerCachedData **********/
ScriptCompilerCachedData* UnboundScriptCreateCodeCache(
IsolatePtr iso,
UnboundScriptPtr us_ptr) {
ISOLATE_SCOPE(iso);
Local<UnboundScript> unbound_script = us_ptr->ptr.Get(iso);
ScriptCompiler::CachedData* cached_data =
ScriptCompiler::CreateCodeCache(unbound_script);
ScriptCompilerCachedData* cd = new ScriptCompilerCachedData;
cd->ptr = cached_data;
cd->data = cached_data->data;
cd->length = cached_data->length;
cd->rejected = cached_data->rejected;
return cd;
}
void ScriptCompilerCachedDataDelete(ScriptCompilerCachedData* cached_data) {
delete cached_data->ptr;
delete cached_data;
}
// This can only run in contexts that belong to the same isolate
// the script was compiled in
RtnValue UnboundScriptRun(ContextPtr ctx, UnboundScriptPtr us_ptr) {
LOCAL_CONTEXT(ctx)
RtnValue rtn = {};
Local<UnboundScript> unbound_script = us_ptr->ptr.Get(iso);
Local<Script> script = unbound_script->BindToCurrentContext();
Local<Value> result;
if (!script->Run(local_ctx).ToLocal(&result)) {
rtn.error = ExceptionError(try_catch, iso, local_ctx);
return rtn;
}
m_value* val = new m_value;
val->iso = iso;
val->ctx = ctx;
val->ptr = Persistent<Value, CopyablePersistentTraits<Value>>(iso, result);
rtn.value = tracked_value(ctx, val);
return rtn;
}
RtnValue JSONParse(ContextPtr ctx, const char* str) {
LOCAL_CONTEXT(ctx);
RtnValue rtn = {};
Local<String> v8Str;
if (!String::NewFromUtf8(iso, str, NewStringType::kNormal).ToLocal(&v8Str)) {
rtn.error = ExceptionError(try_catch, iso, local_ctx);
}
Local<Value> result;
if (!JSON::Parse(local_ctx, v8Str).ToLocal(&result)) {
rtn.error = ExceptionError(try_catch, iso, local_ctx);
return rtn;
}
m_value* val = new m_value;
val->iso = iso;
val->ctx = ctx;
val->ptr = Persistent<Value, CopyablePersistentTraits<Value>>(iso, result);
rtn.value = tracked_value(ctx, val);
return rtn;
}
const char* JSONStringify(ContextPtr ctx, ValuePtr val) {
Isolate* iso;
Local<Context> local_ctx;
if (ctx != nullptr) {
iso = ctx->iso;
} else {
iso = val->iso;
}
Locker locker(iso);
Isolate::Scope isolate_scope(iso);
HandleScope handle_scope(iso);
if (ctx != nullptr) {
local_ctx = ctx->ptr.Get(iso);
} else {
if (val->ctx != nullptr) {
local_ctx = val->ctx->ptr.Get(iso);
} else {
m_ctx* ctx = isolateInternalContext(iso);
local_ctx = ctx->ptr.Get(iso);
}
}
Context::Scope context_scope(local_ctx);
Local<String> str;
if (!JSON::Stringify(local_ctx, val->ptr.Get(iso)).ToLocal(&str)) {
return nullptr;
}
String::Utf8Value json(iso, str);
return CopyString(json);
}
ValuePtr ContextGlobal(ContextPtr ctx) {
LOCAL_CONTEXT(ctx);
m_value* val = new m_value;
val->iso = iso;
val->ctx = ctx;
val->ptr = Persistent<Value, CopyablePersistentTraits<Value>>(
iso, local_ctx->Global());
return tracked_value(ctx, val);
}
/********** Value **********/
#define LOCAL_VALUE(val) \
Isolate* iso = val->iso; \
Locker locker(iso); \
Isolate::Scope isolate_scope(iso); \
HandleScope handle_scope(iso); \
TryCatch try_catch(iso); \
m_ctx* ctx = val->ctx; \
Local<Context> local_ctx; \
if (ctx != nullptr) { \
local_ctx = ctx->ptr.Get(iso); \
} else { \
ctx = isolateInternalContext(iso); \
local_ctx = ctx->ptr.Get(iso); \
} \
Context::Scope context_scope(local_ctx); \
Local<Value> value = val->ptr.Get(iso);
ValuePtr NewValueInteger(IsolatePtr iso, int32_t v) {
ISOLATE_SCOPE_INTERNAL_CONTEXT(iso);
m_value* val = new m_value;
val->iso = iso;
val->ctx = ctx;
val->ptr = Persistent<Value, CopyablePersistentTraits<Value>>(
iso, Integer::New(iso, v));
return tracked_value(ctx, val);
}
ValuePtr NewValueIntegerFromUnsigned(IsolatePtr iso, uint32_t v) {
ISOLATE_SCOPE_INTERNAL_CONTEXT(iso);
m_value* val = new m_value;
val->iso = iso;
val->ctx = ctx;
val->ptr = Persistent<Value, CopyablePersistentTraits<Value>>(
iso, Integer::NewFromUnsigned(iso, v));
return tracked_value(ctx, val);
}
RtnValue NewValueString(IsolatePtr iso, const char* v, int v_length) {
ISOLATE_SCOPE_INTERNAL_CONTEXT(iso);
TryCatch try_catch(iso);
RtnValue rtn = {};
Local<String> str;
if (!String::NewFromUtf8(iso, v, NewStringType::kNormal, v_length)
.ToLocal(&str)) {
rtn.error = ExceptionError(try_catch, iso, ctx->ptr.Get(iso));
return rtn;
}
m_value* val = new m_value;
val->iso = iso;
val->ctx = ctx;
val->ptr = Persistent<Value, CopyablePersistentTraits<Value>>(iso, str);
rtn.value = tracked_value(ctx, val);
return rtn;
}
ValuePtr NewValueNull(IsolatePtr iso) {
ISOLATE_SCOPE_INTERNAL_CONTEXT(iso);
m_value* val = new m_value;
val->iso = iso;
val->ctx = ctx;
val->ptr = Persistent<Value, CopyablePersistentTraits<Value>>(iso, Null(iso));
return tracked_value(ctx, val);
}
ValuePtr NewValueUndefined(IsolatePtr iso) {
ISOLATE_SCOPE_INTERNAL_CONTEXT(iso);
m_value* val = new m_value;
val->iso = iso;
val->ctx = ctx;
val->ptr =
Persistent<Value, CopyablePersistentTraits<Value>>(iso, Undefined(iso));
return tracked_value(ctx, val);
}
// Create a new v8go Value representing a uint8_t array.
// The function takes ownership over the incoming array's memory.
ValuePtr NewValueUint8Array(IsolatePtr iso_ptr, const uint8_t *v, int len) {
ISOLATE_SCOPE_INTERNAL_CONTEXT(iso_ptr);
Local<Context> c = ctx->ptr.Get(iso_ptr);
// The Context::Enter/Exit is only needed when calling this code from low-level unit tests,
// otherwise ArrayBuffer::New() trips over missing context.
// They are not needed when this code gets called through an executing script.
c->Enter();
std::unique_ptr<BackingStore> bs = ArrayBuffer::NewBackingStore(
static_cast<void*>(const_cast<uint8_t*>(v)), len,
[](void* data, size_t length, void *deleter_data) {
free(data);
}, nullptr);
Local<ArrayBuffer> arbuf = ArrayBuffer::New(iso_ptr, std::move(bs));
m_value* val = new m_value;
val->iso = iso_ptr;
val->ctx = ctx;
val->ptr = Persistent<Value, CopyablePersistentTraits<Value>>(
iso_ptr, Uint8Array::New(arbuf, 0, len));
c->Exit(); // see comment above
return tracked_value(ctx, val);
}
ValuePtr NewValueBoolean(IsolatePtr iso, int v) {
ISOLATE_SCOPE_INTERNAL_CONTEXT(iso);
m_value* val = new m_value;
val->iso = iso;
val->ctx = ctx;
val->ptr = Persistent<Value, CopyablePersistentTraits<Value>>(
iso, Boolean::New(iso, v));
return tracked_value(ctx, val);
}
ValuePtr NewValueNumber(IsolatePtr iso, double v) {
ISOLATE_SCOPE_INTERNAL_CONTEXT(iso);
m_value* val = new m_value;
val->iso = iso;
val->ctx = ctx;
val->ptr = Persistent<Value, CopyablePersistentTraits<Value>>(
iso, Number::New(iso, v));
return tracked_value(ctx, val);
}
ValuePtr NewValueBigInt(IsolatePtr iso, int64_t v) {
ISOLATE_SCOPE_INTERNAL_CONTEXT(iso);
m_value* val = new m_value;
val->iso = iso;
val->ctx = ctx;
val->ptr = Persistent<Value, CopyablePersistentTraits<Value>>(
iso, BigInt::New(iso, v));
return tracked_value(ctx, val);
}
ValuePtr NewValueBigIntFromUnsigned(IsolatePtr iso, uint64_t v) {
ISOLATE_SCOPE_INTERNAL_CONTEXT(iso);
m_value* val = new m_value;
val->iso = iso;
val->ctx = ctx;
val->ptr = Persistent<Value, CopyablePersistentTraits<Value>>(
iso, BigInt::NewFromUnsigned(iso, v));
return tracked_value(ctx, val);
}
RtnValue NewValueBigIntFromWords(IsolatePtr iso,
int sign_bit,
int word_count,
const uint64_t* words) {
ISOLATE_SCOPE_INTERNAL_CONTEXT(iso);
TryCatch try_catch(iso);
Local<Context> local_ctx = ctx->ptr.Get(iso);
RtnValue rtn = {};
Local<BigInt> bigint;
if (!BigInt::NewFromWords(local_ctx, sign_bit, word_count, words)
.ToLocal(&bigint)) {
rtn.error = ExceptionError(try_catch, iso, local_ctx);
return rtn;
}
m_value* val = new m_value;
val->iso = iso;
val->ctx = ctx;
val->ptr = Persistent<Value, CopyablePersistentTraits<Value>>(iso, bigint);
rtn.value = tracked_value(ctx, val);
return rtn;
}
const uint32_t* ValueToArrayIndex(ValuePtr ptr) {
LOCAL_VALUE(ptr);
Local<Uint32> array_index;
if (!value->ToArrayIndex(local_ctx).ToLocal(&array_index)) {
return nullptr;
}
uint32_t* idx = (uint32_t*)malloc(sizeof(uint32_t));
*idx = array_index->Value();
return idx;
}
int ValueToBoolean(ValuePtr ptr) {
LOCAL_VALUE(ptr);
return value->BooleanValue(iso);
}
int32_t ValueToInt32(ValuePtr ptr) {
LOCAL_VALUE(ptr);
return value->Int32Value(local_ctx).ToChecked();
}
int64_t ValueToInteger(ValuePtr ptr) {
LOCAL_VALUE(ptr);
return value->IntegerValue(local_ctx).ToChecked();
}
double ValueToNumber(ValuePtr ptr) {
LOCAL_VALUE(ptr);
return value->NumberValue(local_ctx).ToChecked();
}
RtnString ValueToDetailString(ValuePtr ptr) {
LOCAL_VALUE(ptr);
RtnString rtn = {0};
Local<String> str;
if (!value->ToDetailString(local_ctx).ToLocal(&str)) {
rtn.error = ExceptionError(try_catch, iso, local_ctx);
return rtn;
}
String::Utf8Value ds(iso, str);
rtn.data = CopyString(ds);
rtn.length = ds.length();
return rtn;
}
RtnString ValueToString(ValuePtr ptr) {
LOCAL_VALUE(ptr);
RtnString rtn = {0};
// String::Utf8Value will result in an empty string if conversion to a string
// fails
// TODO: Consider propagating the JS error. A fallback value could be returned
// in Value.String()
String::Utf8Value src(iso, value);
char* data = static_cast<char*>(malloc(src.length()));
memcpy(data, *src, src.length());