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// Copyright 2010, 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 URLComponent_h
#define URLComponent_h
namespace WTF {
// Represents a substring for URL parsing.
class URLComponent {
public:
URLComponent() : m_begin(0), m_length(-1) { }
URLComponent(int begin, int length) : m_begin(begin), m_length(length) { }
// Helper that returns a component created with the given begin and ending
// points. The ending point is non-inclusive.
static inline URLComponent fromRange(int begin, int end)
{
return URLComponent(begin, end - begin);
}
// Returns true if this component is valid, meaning the length is given. Even
// valid components may be empty to record the fact that they exist.
bool isValid() const { return m_length != -1; }
bool isNonEmpty() const { return m_length > 0; }
bool isEmptyOrInvalid() const { return m_length <= 0; }
void reset()
{
m_begin = 0;
m_length = -1;
}
bool operator==(const URLComponent& other) const { return m_begin == other.m_begin && m_length == other.m_length; }
int begin() const { return m_begin; }
void setBegin(int begin) { m_begin = begin; }
int length() const { return m_length; }
void setLength(int length) { m_length = length; }
int end() const { return m_begin + m_length; }
private:
int m_begin; // Byte offset in the string of this component.
int m_length; // Will be -1 if the component is unspecified.
};
} // namespace WTF
#endif // URLComponent_h
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