689f3cb314
R=lrn@chromium.org Signed-off-by: Thiago Farina <tfarina@chromium.org> Review URL: http://codereview.chromium.org/7739020 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9195 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
129 lines
4.5 KiB
C++
129 lines
4.5 KiB
C++
// Copyright 2011 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include <stdarg.h>
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#include <limits.h>
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#include "v8.h"
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#include "conversions-inl.h"
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#include "v8conversions.h"
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#include "dtoa.h"
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#include "factory.h"
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#include "strtod.h"
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namespace v8 {
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namespace internal {
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namespace {
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// C++-style iterator adaptor for StringInputBuffer
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// (unlike C++ iterators the end-marker has different type).
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class StringInputBufferIterator {
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public:
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class EndMarker {};
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explicit StringInputBufferIterator(StringInputBuffer* buffer);
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int operator*() const;
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void operator++();
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bool operator==(EndMarker const&) const { return end_; }
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bool operator!=(EndMarker const& m) const { return !end_; }
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private:
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StringInputBuffer* const buffer_;
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int current_;
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bool end_;
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};
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StringInputBufferIterator::StringInputBufferIterator(
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StringInputBuffer* buffer) : buffer_(buffer) {
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++(*this);
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}
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int StringInputBufferIterator::operator*() const {
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return current_;
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}
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void StringInputBufferIterator::operator++() {
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end_ = !buffer_->has_more();
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if (!end_) {
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current_ = buffer_->GetNext();
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}
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}
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} // End anonymous namespace.
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double StringToDouble(UnicodeCache* unicode_cache,
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String* str, int flags, double empty_string_val) {
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StringShape shape(str);
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if (shape.IsSequentialAscii()) {
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const char* begin = SeqAsciiString::cast(str)->GetChars();
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const char* end = begin + str->length();
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return InternalStringToDouble(unicode_cache, begin, end, flags,
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empty_string_val);
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} else if (shape.IsSequentialTwoByte()) {
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const uc16* begin = SeqTwoByteString::cast(str)->GetChars();
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const uc16* end = begin + str->length();
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return InternalStringToDouble(unicode_cache, begin, end, flags,
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empty_string_val);
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} else {
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StringInputBuffer buffer(str);
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return InternalStringToDouble(unicode_cache,
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StringInputBufferIterator(&buffer),
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StringInputBufferIterator::EndMarker(),
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flags,
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empty_string_val);
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}
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}
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double StringToInt(UnicodeCache* unicode_cache,
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String* str,
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int radix) {
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StringShape shape(str);
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if (shape.IsSequentialAscii()) {
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const char* begin = SeqAsciiString::cast(str)->GetChars();
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const char* end = begin + str->length();
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return InternalStringToInt(unicode_cache, begin, end, radix);
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} else if (shape.IsSequentialTwoByte()) {
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const uc16* begin = SeqTwoByteString::cast(str)->GetChars();
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const uc16* end = begin + str->length();
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return InternalStringToInt(unicode_cache, begin, end, radix);
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} else {
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StringInputBuffer buffer(str);
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return InternalStringToInt(unicode_cache,
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StringInputBufferIterator(&buffer),
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StringInputBufferIterator::EndMarker(),
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radix);
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}
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}
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} } // namespace v8::internal
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