/* * Copyright (C) 2008-2016 Apple Inc. All Rights Reserved. * Copyright (C) 2009 Torch Mobile, Inc. http://www.torchmobile.com/ * Copyright (C) 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: * 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 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 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. */ #pragma once #if COMPILER(MSVC) // Disable the "unreachable code" warning so we can compile the ASSERT_NOT_REACHED in the END_STATE macro. #pragma warning(disable: 4702) #endif namespace WebCore { inline bool isTokenizerWhitespace(UChar character) { return character == ' ' || character == '\x0A' || character == '\x09' || character == '\x0C'; } #define BEGIN_STATE(stateName) \ case stateName: \ stateName: { \ constexpr auto currentState = stateName; \ UNUSED_PARAM(currentState); #define END_STATE() \ ASSERT_NOT_REACHED(); \ break; \ } #define RETURN_IN_CURRENT_STATE(expression) \ do { \ m_state = currentState; \ return expression; \ } while (false) // We use this macro when the HTML spec says "reconsume the current input character in the <mumble> state." #define RECONSUME_IN(newState) \ do { \ goto newState; \ } while (false) // We use this macro when the HTML spec says "consume the next input character ... and switch to the <mumble> state." #define ADVANCE_TO(newState) \ do { \ if (!m_preprocessor.advance(source, isNullCharacterSkippingState(newState))) { \ m_state = newState; \ return haveBufferedCharacterToken(); \ } \ character = m_preprocessor.nextInputCharacter(); \ goto newState; \ } while (false) #define ADVANCE_PAST_NON_NEWLINE_TO(newState) \ do { \ if (!m_preprocessor.advancePastNonNewline(source, isNullCharacterSkippingState(newState))) { \ m_state = newState; \ return haveBufferedCharacterToken(); \ } \ character = m_preprocessor.nextInputCharacter(); \ goto newState; \ } while (false) // For more complex cases, caller consumes the characters first and then uses this macro. #define SWITCH_TO(newState) \ do { \ if (!m_preprocessor.peek(source, isNullCharacterSkippingState(newState))) { \ m_state = newState; \ return haveBufferedCharacterToken(); \ } \ character = m_preprocessor.nextInputCharacter(); \ goto newState; \ } while (false) } // namespace WebCore