Move stringize_macros to base/strings.

This removes the unused L-string macros in the file.

BUG=

Review URL: https://codereview.chromium.org/12090083

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@179926 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 60 insertions, 0 deletions

diff --git a/base/strings/stringize_macros.h b/base/strings/stringize_macros.h
new file mode 100644
index 0000000..d4e2707
--- /dev/null
+++ b/base/strings/stringize_macros.h
@@ -0,0 +1,31 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// This file defines preprocessor macros for stringizing preprocessor
+// symbols (or their output) and manipulating preprocessor symbols
+// that define strings.
+
+#ifndef BASE_STRINGS_STRINGIZE_MACROS_H_
+#define BASE_STRINGS_STRINGIZE_MACROS_H_
+
+#include "build/build_config.h"
+
+// This is not very useful as it does not expand defined symbols if
+// called directly. Use its counterpart without the _NO_EXPANSION
+// suffix, below.
+#define STRINGIZE_NO_EXPANSION(x) #x
+
+// Use this to quote the provided parameter, first expanding it if it
+// is a preprocessor symbol.
+//
+// For example, if:
+//   #define A FOO
+//   #define B(x) myobj->FunctionCall(x)
+//
+// Then:
+//   STRINGIZE(A) produces "FOO"
+//   STRINGIZE(B(y)) produces "myobj->FunctionCall(y)"
+#define STRINGIZE(x) STRINGIZE_NO_EXPANSION(x)
+
+#endif  // BASE_STRINGS_STRINGIZE_MACROS_H_
diff --git a/base/strings/stringize_macros_unittest.cc b/base/strings/stringize_macros_unittest.cc
new file mode 100644
index 0000000..d7f9e56
--- /dev/null
+++ b/base/strings/stringize_macros_unittest.cc
@@ -0,0 +1,29 @@
+// Copyright (c) 2010 The Chromium 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 "base/strings/stringize_macros.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+// Macros as per documentation in header file.
+#define PREPROCESSOR_UTIL_UNITTEST_A FOO
+#define PREPROCESSOR_UTIL_UNITTEST_B(x) myobj->FunctionCall(x)
+#define PREPROCESSOR_UTIL_UNITTEST_C "foo"
+
+TEST(StringizeTest, Ansi) {
+  EXPECT_STREQ(
+      "PREPROCESSOR_UTIL_UNITTEST_A",
+      STRINGIZE_NO_EXPANSION(PREPROCESSOR_UTIL_UNITTEST_A));
+  EXPECT_STREQ(
+      "PREPROCESSOR_UTIL_UNITTEST_B(y)",
+      STRINGIZE_NO_EXPANSION(PREPROCESSOR_UTIL_UNITTEST_B(y)));
+  EXPECT_STREQ(
+      "PREPROCESSOR_UTIL_UNITTEST_C",
+      STRINGIZE_NO_EXPANSION(PREPROCESSOR_UTIL_UNITTEST_C));
+
+  EXPECT_STREQ("FOO", STRINGIZE(PREPROCESSOR_UTIL_UNITTEST_A));
+  EXPECT_STREQ("myobj->FunctionCall(y)",
+               STRINGIZE(PREPROCESSOR_UTIL_UNITTEST_B(y)));
+  EXPECT_STREQ("\"foo\"", STRINGIZE(PREPROCESSOR_UTIL_UNITTEST_C));
+}