Cross-platform portability fixes for JSONReader. Adds generic string-to-double parsing and tests in string_util.

There is one behavior change here: numbers which "look" like integers by virtue of being free of '.', 'e', and 'E' are no longer rejected if they're not within the [INT_MIN .. INT_MAX] range.  Instead, they'll be parsed and stored internally as doubles.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@519 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 50 insertions, 0 deletions

diff --git a/base/float_util.h b/base/float_util.h
new file mode 100644
index 0000000..6047417
--- /dev/null
+++ b/base/float_util.h
@@ -0,0 +1,50 @@
+// Copyright 2008, Google Inc.
+// 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.
+
+#ifndef BASE_FLOAT_UTIL_H_
+#define BASE_FLOAT_UTIL_H_
+
+#include "build/build_config.h"
+
+#include <float.h>
+#include <math.h>
+
+namespace base {
+
+inline bool IsFinite(const double& number) {
+#if defined(OS_POSIX)
+  return finite(number) != 0;
+#elif defined(OS_WIN)
+  return _finite(number) != 0;
+#endif
+}
+
+}  // namespace base
+
+#endif  // BASE_FLOAT_UTIL_H_