| /* |
| * Copyright (C) 2010 Apple 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. AND ITS 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 APPLE INC. OR ITS 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 SKY_ENGINE_CORE_HTML_PARSER_HTMLPARSERIDIOMS_H_ |
| #define SKY_ENGINE_CORE_HTML_PARSER_HTMLPARSERIDIOMS_H_ |
| |
| #include "sky/engine/core/dom/QualifiedName.h" |
| #include "sky/engine/platform/Decimal.h" |
| #include "sky/engine/wtf/Forward.h" |
| #include "sky/engine/wtf/text/WTFString.h" |
| |
| namespace WTF { |
| class TextEncoding; |
| } |
| |
| namespace blink { |
| |
| // Strip leading and trailing whitespace as defined by the HTML specification. |
| String stripLeadingAndTrailingHTMLSpaces(const String&); |
| template<size_t inlineCapacity> |
| String stripLeadingAndTrailingHTMLSpaces(const Vector<UChar, inlineCapacity>& vector) |
| { |
| return stripLeadingAndTrailingHTMLSpaces(StringImpl::create8BitIfPossible(vector)); |
| } |
| |
| // An implementation of the HTML specification's algorithm to convert a number to a string for number and range types. |
| String serializeForNumberType(const Decimal&); |
| String serializeForNumberType(double); |
| |
| // Convert the specified string to a decimal/double. If the conversion fails, the return value is fallback value or NaN if not specified. |
| // Leading or trailing illegal characters cause failure, as does passing an empty string. |
| // The double* parameter may be 0 to check if the string can be parsed without getting the result. |
| Decimal parseToDecimalForNumberType(const String&, const Decimal& fallbackValue = Decimal::nan()); |
| double parseToDoubleForNumberType(const String&, double fallbackValue = std::numeric_limits<double>::quiet_NaN()); |
| |
| // http://www.whatwg.org/specs/web-apps/current-work/#rules-for-parsing-integers |
| bool parseHTMLInteger(const String&, int&); |
| |
| // http://www.whatwg.org/specs/web-apps/current-work/#rules-for-parsing-non-negative-integers |
| bool parseHTMLNonNegativeInteger(const String&, unsigned&); |
| |
| // Space characters as defined by the HTML specification. |
| template<typename CharType> |
| inline bool isHTMLSpace(CharType character) |
| { |
| // Histogram from Apple's page load test combined with some ad hoc browsing some other test suites. |
| // |
| // 82%: 216330 non-space characters, all > U+0020 |
| // 11%: 30017 plain space characters, U+0020 |
| // 5%: 12099 newline characters, U+000A |
| // 2%: 5346 tab characters, U+0009 |
| // |
| // No other characters seen. No U+000C or U+000D, and no other control characters. |
| // Accordingly, we check for non-spaces first, then space, then newline, then tab, then the other characters. |
| |
| return character <= ' ' && (character == ' ' || character == '\n' || character == '\t' || character == '\r' || character == '\f'); |
| } |
| |
| template<typename CharType> |
| inline bool isComma(CharType character) |
| { |
| return character == ','; |
| } |
| |
| template<typename CharType> |
| inline bool isHTMLSpaceOrComma(CharType character) |
| { |
| return isComma(character) || isHTMLSpace(character); |
| } |
| |
| inline bool isHTMLLineBreak(UChar character) |
| { |
| return character <= '\r' && (character == '\n' || character == '\r'); |
| } |
| |
| template<typename CharType> |
| inline bool isNotHTMLSpace(CharType character) |
| { |
| return !isHTMLSpace<CharType>(character); |
| } |
| |
| bool threadSafeMatch(const QualifiedName&, const QualifiedName&); |
| bool threadSafeMatch(const String&, const QualifiedName&); |
| |
| enum CharacterWidth { |
| Likely8Bit, |
| Force8Bit, |
| Force16Bit |
| }; |
| |
| String attemptStaticStringCreation(const LChar*, size_t); |
| |
| String attemptStaticStringCreation(const UChar*, size_t, CharacterWidth); |
| |
| template<size_t inlineCapacity> |
| inline static String attemptStaticStringCreation(const Vector<UChar, inlineCapacity>& vector, CharacterWidth width) |
| { |
| return attemptStaticStringCreation(vector.data(), vector.size(), width); |
| } |
| |
| inline static String attemptStaticStringCreation(const String str) |
| { |
| if (!str.is8Bit()) |
| return attemptStaticStringCreation(str.characters16(), str.length(), Force16Bit); |
| return attemptStaticStringCreation(str.characters8(), str.length()); |
| } |
| |
| |
| } |
| #endif // SKY_ENGINE_CORE_HTML_PARSER_HTMLPARSERIDIOMS_H_ |