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// Copyright 2016 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.
#include "src/ast/compile-time-value.h"
#include "src/ast/ast.h"
#include "src/factory.h"
#include "src/handles-inl.h"
#include "src/isolate.h"
#include "src/objects-inl.h"
namespace v8 {
namespace internal {
bool CompileTimeValue::IsCompileTimeValue(Expression* expression) {
if (expression->IsLiteral()) return true;
MaterializedLiteral* lit = expression->AsMaterializedLiteral();
return lit != NULL && lit->is_simple();
}
Handle<FixedArray> CompileTimeValue::GetValue(Isolate* isolate,
Expression* expression) {
Factory* factory = isolate->factory();
DCHECK(IsCompileTimeValue(expression));
Handle<FixedArray> result = factory->NewFixedArray(2, TENURED);
ObjectLiteral* object_literal = expression->AsObjectLiteral();
if (object_literal != NULL) {
DCHECK(object_literal->is_simple());
if (object_literal->fast_elements()) {
result->set(kLiteralTypeSlot, Smi::FromInt(OBJECT_LITERAL_FAST_ELEMENTS));
} else {
result->set(kLiteralTypeSlot, Smi::FromInt(OBJECT_LITERAL_SLOW_ELEMENTS));
}
result->set(kElementsSlot, *object_literal->constant_properties());
} else {
ArrayLiteral* array_literal = expression->AsArrayLiteral();
DCHECK(array_literal != NULL && array_literal->is_simple());
result->set(kLiteralTypeSlot, Smi::FromInt(ARRAY_LITERAL));
result->set(kElementsSlot, *array_literal->constant_elements());
}
return result;
}
CompileTimeValue::LiteralType CompileTimeValue::GetLiteralType(
Handle<FixedArray> value) {
Smi* literal_type = Smi::cast(value->get(kLiteralTypeSlot));
return static_cast<LiteralType>(literal_type->value());
}
Handle<HeapObject> CompileTimeValue::GetElements(Handle<FixedArray> value) {
return Handle<HeapObject>(HeapObject::cast(value->get(kElementsSlot)));
}
} // namespace internal
} // namespace v8
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