Encapsulating Type information in the CompareICStub

test/cctest/test-compare-nil-ic-stub.cc

+// Copyright 2006-2013 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include <stdlib.h>
+
+#include "v8.h"
+#include "cctest.h"
+#include "code-stubs.h"
+
+
+using namespace v8::internal;
+
+#define Types CompareNilICStub::Types
+
+TEST(TypeConstructors) {
+  Types types;
+  types.Add(CompareNilICStub::MONOMORPHIC_MAP);
+  Types types2(types);
+  CHECK_EQ(types.ToIntegral(), types2.ToIntegral());
+}
+
+TEST(ExternalICStateParsing) {
+  Types types;
+  types.Add(CompareNilICStub::UNDEFINED);
+  CompareNilICStub stub(kNonStrictEquality, kUndefinedValue, types);
+  CompareNilICStub stub2(stub.GetExtraICState());
+  CHECK_EQ(stub.GetKind(), stub2.GetKind());
+  CHECK_EQ(stub.GetNilValue(), stub2.GetNilValue());
+  CHECK_EQ(stub.GetTypes().ToIntegral(), stub2.GetTypes().ToIntegral());
+}
+
+TEST(SettingTypes) {
+  Types state;
+  CHECK(state.IsEmpty());
+  state.Add(CompareNilICStub::NULL_TYPE);
+  CHECK(!state.IsEmpty());
+  CHECK(state.Contains(CompareNilICStub::NULL_TYPE));
+  CHECK(!state.Contains(CompareNilICStub::UNDEFINED));
+  CHECK(!state.Contains(CompareNilICStub::UNDETECTABLE));
+  state.Add(CompareNilICStub::UNDEFINED);
+  CHECK(state.Contains(CompareNilICStub::UNDEFINED));
+  CHECK(state.Contains(CompareNilICStub::NULL_TYPE));
+  CHECK(!state.Contains(CompareNilICStub::UNDETECTABLE));
+}
+
+TEST(ClearTypes) {
+  Types state;
+  state.Add(CompareNilICStub::NULL_TYPE);
+  state.RemoveAll();
+  CHECK(state.IsEmpty());
+}
+
+TEST(FullCompare) {
+  Types state;
+  CHECK(Types::FullCompare() != state);
+  state.Add(CompareNilICStub::UNDEFINED);
+  CHECK(state != Types::FullCompare());
+  state.Add(CompareNilICStub::NULL_TYPE);
+  CHECK(state != Types::FullCompare());
+  state.Add(CompareNilICStub::UNDETECTABLE);
+  CHECK(state == Types::FullCompare());
+}