Reland of "Add Iterable bitset class."
This helper allows us to quickly iterate state bits from the
Impl/Renderer layers.
Re-land with no C++11 usage.
BUG=angleproject:1040
TEST=angle_unittests (Mac/Win/Linux)
Change-Id: I3b6d5beb2bcff7fa3d45c9220d7c026c64c45d2e
Reviewed-on: https://chromium-review.googlesource.com/290153
Tested-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
diff --git a/src/common/BitSetIterator_unittest.cpp b/src/common/BitSetIterator_unittest.cpp
new file mode 100644
index 0000000..b1411d9
--- /dev/null
+++ b/src/common/BitSetIterator_unittest.cpp
@@ -0,0 +1,48 @@
+//
+// Copyright 2015 The ANGLE 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.
+//
+// BitSetIteratorTest:
+// Test the IterableBitSet class.
+//
+
+#include <gtest/gtest.h>
+
+#include "common/BitSetIterator.h"
+
+using namespace angle;
+
+namespace
+{
+class BitSetIteratorTest : public testing::Test
+{
+ protected:
+ std::bitset<40> mStateBits;
+};
+
+TEST_F(BitSetIteratorTest, Iterator)
+{
+ std::set<unsigned long> originalValues;
+ originalValues.insert(2);
+ originalValues.insert(6);
+ originalValues.insert(8);
+ originalValues.insert(35);
+
+ for (unsigned long value : originalValues)
+ {
+ mStateBits.set(value);
+ }
+
+ std::set<unsigned long> readValues;
+ for (unsigned long bit : IterateBitSet(mStateBits))
+ {
+ EXPECT_EQ(1u, originalValues.count(bit));
+ EXPECT_EQ(0u, readValues.count(bit));
+ readValues.insert(bit);
+ }
+
+ EXPECT_EQ(originalValues.size(), readValues.size());
+}
+
+} // anonymous namespace