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// Copyright 2015 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_ISOLATE_INL_H_
#define V8_ISOLATE_INL_H_
#include "src/isolate.h"
#include "src/objects-inl.h"
namespace v8 {
namespace internal {
void Isolate::set_context(Context* context) {
DCHECK(context == NULL || context->IsContext());
thread_local_top_.context_ = context;
}
Object* Isolate::pending_exception() {
DCHECK(has_pending_exception());
DCHECK(!thread_local_top_.pending_exception_->IsException());
return thread_local_top_.pending_exception_;
}
void Isolate::set_pending_exception(Object* exception_obj) {
DCHECK(!exception_obj->IsException());
thread_local_top_.pending_exception_ = exception_obj;
}
void Isolate::clear_pending_exception() {
DCHECK(!thread_local_top_.pending_exception_->IsException());
thread_local_top_.pending_exception_ = heap_.the_hole_value();
}
bool Isolate::has_pending_exception() {
DCHECK(!thread_local_top_.pending_exception_->IsException());
return !thread_local_top_.pending_exception_->IsTheHole();
}
void Isolate::clear_pending_message() {
thread_local_top_.pending_message_obj_ = heap_.the_hole_value();
}
Object* Isolate::scheduled_exception() {
DCHECK(has_scheduled_exception());
DCHECK(!thread_local_top_.scheduled_exception_->IsException());
return thread_local_top_.scheduled_exception_;
}
bool Isolate::has_scheduled_exception() {
DCHECK(!thread_local_top_.scheduled_exception_->IsException());
return thread_local_top_.scheduled_exception_ != heap_.the_hole_value();
}
void Isolate::clear_scheduled_exception() {
DCHECK(!thread_local_top_.scheduled_exception_->IsException());
thread_local_top_.scheduled_exception_ = heap_.the_hole_value();
}
bool Isolate::is_catchable_by_javascript(Object* exception) {
return exception != heap()->termination_exception();
}
Handle<JSGlobalObject> Isolate::global_object() {
return Handle<JSGlobalObject>(context()->global_object(), this);
}
Isolate::ExceptionScope::ExceptionScope(Isolate* isolate)
: isolate_(isolate),
pending_exception_(isolate_->pending_exception(), isolate_) {}
Isolate::ExceptionScope::~ExceptionScope() {
isolate_->set_pending_exception(*pending_exception_);
}
#define NATIVE_CONTEXT_FIELD_ACCESSOR(index, type, name) \
Handle<type> Isolate::name() { \
return Handle<type>(native_context()->name(), this); \
} \
bool Isolate::is_##name(type* value) { \
return native_context()->is_##name(value); \
}
NATIVE_CONTEXT_FIELDS(NATIVE_CONTEXT_FIELD_ACCESSOR)
#undef NATIVE_CONTEXT_FIELD_ACCESSOR
bool Isolate::IsArraySpeciesLookupChainIntact() {
if (!FLAG_harmony_species) return true;
// Note: It would be nice to have debug checks to make sure that the
// species protector is accurate, but this would be hard to do for most of
// what the protector stands for:
// - You'd need to traverse the heap to check that no Array instance has
// a constructor property
// - To check that Array[Symbol.species] == Array, JS code has to execute,
// but JS cannot be invoked in callstack overflow situations
// All that could be checked reliably is that
// Array.prototype.constructor == Array. Given that limitation, no check is
// done here. In place, there are mjsunit tests harmony/array-species* which
// ensure that behavior is correct in various invalid protector cases.
PropertyCell* species_cell = heap()->species_protector();
return species_cell->value()->IsSmi() &&
Smi::cast(species_cell->value())->value() == kArrayProtectorValid;
}
} // namespace internal
} // namespace v8
#endif // V8_ISOLATE_INL_H_
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