Index: src/ast/compile-time-value.cc |
diff --git a/src/ast/compile-time-value.cc b/src/ast/compile-time-value.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..eda536b7167e052ce9ee9adac50b26c2a70e6280 |
--- /dev/null |
+++ b/src/ast/compile-time-value.cc |
@@ -0,0 +1,56 @@ |
+// 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<FixedArray> CompileTimeValue::GetElements(Handle<FixedArray> value) { |
+ return Handle<FixedArray>(FixedArray::cast(value->get(kElementsSlot))); |
+} |
+ |
+} // namespace internal |
+} // namespace v8 |