text: /*
   * Copyright (C) 2009 Apple Inc. All rights reserved.
   * Copyright (C) 2009 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:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. 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.
   *
   * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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.
   */
  
  #include "modules/webgl/WebGLUniformLocation.h"
  
  namespace blink {
  
  WebGLUniformLocation* WebGLUniformLocation::create(WebGLProgram* program,
                                                     GLint location) {
    return new WebGLUniformLocation(program, location);
  }
  
  WebGLUniformLocation::WebGLUniformLocation(WebGLProgram* program,
                                             GLint location)
      : m_program(program), m_location(location) {
    ASSERT(m_program);
    m_linkCount = m_program->linkCount();
  }
  
  WebGLProgram* WebGLUniformLocation::program() const {
    // If the program has been linked again, then this UniformLocation is no
    // longer valid.
    if (m_program->linkCount() != m_linkCount)
      return 0;
    return m_program;
  }
  
  GLint WebGLUniformLocation::location() const {
    // If the program has been linked again, then this UniformLocation is no
    // longer valid.
    ASSERT(m_program->linkCount() == m_linkCount);
    return m_location;
  }
  
  DEFINE_TRACE(WebGLUniformLocation) {
    visitor->trace(m_program);
  }
  
  }  // namespace blink
  