diff options
Diffstat (limited to 'src/designer/src/lib/shared/qscripthighlighter.cpp')
| -rw-r--r-- | src/designer/src/lib/shared/qscripthighlighter.cpp | 468 |
1 files changed, 468 insertions, 0 deletions
diff --git a/src/designer/src/lib/shared/qscripthighlighter.cpp b/src/designer/src/lib/shared/qscripthighlighter.cpp new file mode 100644 index 000000000..67555f39e --- /dev/null +++ b/src/designer/src/lib/shared/qscripthighlighter.cpp @@ -0,0 +1,468 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the Qt Designer of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qscripthighlighter_p.h" + +#include <QtCore/QSet> + +QT_BEGIN_NAMESPACE + +static const QSet<QString> &qscriptKeywords() { + static QSet<QString> keywords; + if (keywords.empty()) { + keywords.insert(QLatin1String("Infinity")); + keywords.insert(QLatin1String("NaN")); + keywords.insert(QLatin1String("abstract")); + keywords.insert(QLatin1String("boolean")); + keywords.insert(QLatin1String("break")); + keywords.insert(QLatin1String("byte")); + keywords.insert(QLatin1String("case")); + keywords.insert(QLatin1String("catch")); + keywords.insert(QLatin1String("char")); + keywords.insert(QLatin1String("class")); + keywords.insert(QLatin1String("const")); + keywords.insert(QLatin1String("constructor")); + keywords.insert(QLatin1String("continue")); + keywords.insert(QLatin1String("debugger")); + keywords.insert(QLatin1String("default")); + keywords.insert(QLatin1String("delete")); + keywords.insert(QLatin1String("do")); + keywords.insert(QLatin1String("double")); + keywords.insert(QLatin1String("else")); + keywords.insert(QLatin1String("enum")); + keywords.insert(QLatin1String("export")); + keywords.insert(QLatin1String("extends")); + keywords.insert(QLatin1String("false")); + keywords.insert(QLatin1String("final")); + keywords.insert(QLatin1String("finally")); + keywords.insert(QLatin1String("float")); + keywords.insert(QLatin1String("for")); + keywords.insert(QLatin1String("function")); + keywords.insert(QLatin1String("goto")); + keywords.insert(QLatin1String("if")); + keywords.insert(QLatin1String("implements")); + keywords.insert(QLatin1String("import")); + keywords.insert(QLatin1String("in")); + keywords.insert(QLatin1String("instanceof")); + keywords.insert(QLatin1String("int")); + keywords.insert(QLatin1String("interface")); + keywords.insert(QLatin1String("long")); + keywords.insert(QLatin1String("native")); + keywords.insert(QLatin1String("new")); + keywords.insert(QLatin1String("package")); + keywords.insert(QLatin1String("private")); + keywords.insert(QLatin1String("protected")); + keywords.insert(QLatin1String("public")); + keywords.insert(QLatin1String("return")); + keywords.insert(QLatin1String("short")); + keywords.insert(QLatin1String("static")); + keywords.insert(QLatin1String("super")); + keywords.insert(QLatin1String("switch")); + keywords.insert(QLatin1String("synchronized")); + keywords.insert(QLatin1String("this")); + keywords.insert(QLatin1String("throw")); + keywords.insert(QLatin1String("throws")); + keywords.insert(QLatin1String("transient")); + keywords.insert(QLatin1String("true")); + keywords.insert(QLatin1String("try")); + keywords.insert(QLatin1String("typeof")); + keywords.insert(QLatin1String("undefined")); + keywords.insert(QLatin1String("var")); + keywords.insert(QLatin1String("void")); + keywords.insert(QLatin1String("volatile")); + keywords.insert(QLatin1String("while")); + keywords.insert(QLatin1String("with")); // end + } + return keywords; +} + +static QSet<QChar> alphaChars() { + QSet<QChar> rc; + const QString alpha = QLatin1String("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"); + foreach (QChar chr, alpha) + rc.insert(chr); + return rc; +} + +namespace qdesigner_internal { + +QScriptHighlighter::QScriptHighlighter(QTextDocument *parent) + : QSyntaxHighlighter(parent) +{ + m_numberFormat.setForeground(Qt::blue); + m_stringFormat.setForeground(Qt::darkGreen); + m_typeFormat.setForeground(Qt::darkMagenta); + m_keywordFormat.setForeground(Qt::darkYellow); + m_labelFormat.setForeground(Qt::darkRed); + m_commentFormat.setForeground(Qt::red); + //m_commentFormat.setFontFamily("times"); + m_commentFormat.setFontItalic(true); + m_preProcessorFormat.setForeground(Qt::darkBlue); +} + +void QScriptHighlighter::highlightBlock(const QString &text) +{ + // states + enum { + StateStandard, + StateCommentStart1, + StateCCommentStart2, + StateCppCommentStart2, + StateCComment, + StateCppComment, + StateCCommentEnd1, + StateCCommentEnd2, + StateStringStart, + StateString, + StateStringEnd, + StateString2Start, + StateString2, + StateString2End, + StateNumber, + StatePreProcessor, + NumStates + }; + // tokens + enum { + InputAlpha, + InputNumber, + InputAsterix, + InputSlash, + InputParen, + InputSpace, + InputHash, + InputQuotation, + InputApostrophe, + InputSep, + NumInputs + }; + + static const uchar table[NumStates][NumInputs] = { + { StateStandard, StateNumber, StateStandard, StateCommentStart1, StateStandard, StateStandard, StatePreProcessor, StateStringStart, StateString2Start, StateStandard }, // StateStandard + { StateStandard, StateNumber, StateCCommentStart2, StateCppCommentStart2, StateStandard, StateStandard, StatePreProcessor, StateStringStart, StateString2Start, StateStandard }, // StateCommentStart1 + { StateCComment, StateCComment, StateCCommentEnd1, StateCComment, StateCComment, StateCComment, StateCComment, StateCComment, StateCComment, StateCComment }, // StateCCommentStart2 + { StateCppComment, StateCppComment, StateCppComment, StateCppComment, StateCppComment, StateCppComment, StateCppComment, StateCppComment, StateCppComment, StateCppComment }, // CppCommentStart2 + { StateCComment, StateCComment, StateCCommentEnd1, StateCComment, StateCComment, StateCComment, StateCComment, StateCComment, StateCComment, StateCComment }, // StateCComment + { StateCppComment, StateCppComment, StateCppComment, StateCppComment, StateCppComment, StateCppComment, StateCppComment, StateCppComment, StateCppComment, StateCppComment }, // StateCppComment + { StateCComment, StateCComment, StateCCommentEnd1, StateCCommentEnd2, StateCComment, StateCComment, StateCComment, StateCComment, StateCComment, StateCComment }, // StateCCommentEnd1 + { StateStandard, StateNumber, StateStandard, StateCommentStart1, StateStandard, StateStandard, StatePreProcessor, StateStringStart, StateString2Start, StateStandard }, // StateCCommentEnd2 + { StateString, StateString, StateString, StateString, StateString, StateString, StateString, StateStringEnd, StateString, StateString }, // StateStringStart + { StateString, StateString, StateString, StateString, StateString, StateString, StateString, StateStringEnd, StateString, StateString }, // StateString + { StateStandard, StateStandard, StateStandard, StateCommentStart1, StateStandard, StateStandard, StatePreProcessor, StateStringStart, StateString2Start, StateStandard }, // StateStringEnd + { StateString2, StateString2, StateString2, StateString2, StateString2, StateString2, StateString2, StateString2, StateString2End, StateString2 }, // StateString2Start + { StateString2, StateString2, StateString2, StateString2, StateString2, StateString2, StateString2, StateString2, StateString2End, StateString2 }, // StateString2 + { StateStandard, StateStandard, StateStandard, StateCommentStart1, StateStandard, StateStandard, StatePreProcessor, StateStringStart, StateString2Start, StateStandard }, // StateString2End + { StateNumber, StateNumber, StateStandard, StateCommentStart1, StateStandard, StateStandard, StatePreProcessor, StateStringStart, StateString2Start, StateStandard }, // StateNumber + { StatePreProcessor, StateStandard, StateStandard, StateCommentStart1, StateStandard, StateStandard, StatePreProcessor, StateStringStart, StateString2Start, StateStandard } // StatePreProcessor + }; + + QString buffer; + buffer.reserve(text.length()); + QTextCharFormat emptyFormat; + + int state = StateStandard; + const int previousState = previousBlockState(); + if (previousState != -1) + state = previousState; + + if (text.isEmpty()) { + setCurrentBlockState(previousState); + return; + } + + int input = -1; + int i = 0; + bool lastWasBackSlash = false; + bool makeLastStandard = false; + + static const QSet<QChar> alphabeth = alphaChars(); + static const QString mathChars = QString::fromLatin1("xXeE"); + static const QString numbers = QString::fromLatin1("0123456789"); + bool questionMark = false; + QChar lastChar; + QString firstWord; + forever { + const QChar c = text.at(i); + + if (lastWasBackSlash) { + input = InputSep; + } else { + switch (c.toLatin1()) { + case '*': + input = InputAsterix; + break; + case '/': + input = InputSlash; + break; + case '(': case '[': case '{': + input = InputParen; + if (state == StateStandard + || state == StateNumber + || state == StatePreProcessor + || state == StateCCommentEnd2 + || state == StateCCommentEnd1 + || state == StateString2End + || state == StateStringEnd + ) + //blockData->parentheses << Parenthesis(Parenthesis::Open, c, i); + break; + case ')': case ']': case '}': + input = InputParen; + if (state == StateStandard + || state == StateNumber + || state == StatePreProcessor + || state == StateCCommentEnd2 + || state == StateCCommentEnd1 + || state == StateString2End + || state == StateStringEnd + ) { + //blockData->parentheses << Parenthesis(Parenthesis::Closed, c, i); + } + break; + case '#': + input = InputHash; + break; + case '"': + input = InputQuotation; + break; + case '\'': + input = InputApostrophe; + break; + case ' ': + input = InputSpace; + break; + case '1': case '2': case '3': case '4': case '5': + case '6': case '7': case '8': case '9': case '0': + if (alphabeth.contains(lastChar) + && (!mathChars.contains(lastChar) || !numbers.contains(text.at(i - 1)))) { + input = InputAlpha; + } else { + if (input == InputAlpha && numbers.contains(lastChar)) + input = InputAlpha; + else + input = InputNumber; + } + break; + case ':': { + input = InputAlpha; + QChar nextChar = QLatin1Char(' '); + if (i < text.length() - 1) + nextChar = text.at(i + 1); + if (state == StateStandard && !questionMark && + lastChar != QLatin1Char(':') && nextChar != QLatin1Char(':')) { + for (int j = 0; j < i; ++j) { + if (format(j) == emptyFormat) + setFormat(j, 1, m_labelFormat); + } + } + break; + } + default: { + if (!questionMark && c == QLatin1Char('?')) + questionMark = true; + if (c.isLetter() || c == QLatin1Char('_')) + input = InputAlpha; + else + input = InputSep; + } break; + } + } + + lastWasBackSlash = !lastWasBackSlash && c == QLatin1Char('\\'); + + if (input == InputAlpha) + buffer += c; + + state = table[state][input]; + + switch (state) { + case StateStandard: { + setFormat(i, 1, emptyFormat); + if (makeLastStandard) + setFormat(i - 1, 1, emptyFormat); + makeLastStandard = false; + if (!buffer.isEmpty() && input != InputAlpha ) { + highlightKeyword(i, buffer); + buffer.clear(); + } + } break; + case StateCommentStart1: + if (makeLastStandard) + setFormat(i - 1, 1, emptyFormat); + makeLastStandard = true; + buffer.resize(0); + break; + case StateCCommentStart2: + setFormat(i - 1, 2, m_commentFormat); + makeLastStandard = false; + buffer.resize(0); + break; + case StateCppCommentStart2: + setFormat(i - 1, 2, m_commentFormat); + makeLastStandard = false; + buffer.resize(0); + break; + case StateCComment: + if (makeLastStandard) + setFormat(i - 1, 1, emptyFormat); + makeLastStandard = false; + setFormat(i, 1, m_commentFormat); + buffer.resize(0); + break; + case StateCppComment: + if (makeLastStandard) + setFormat(i - 1, 1, emptyFormat); + makeLastStandard = false; + setFormat(i, 1, m_commentFormat); + buffer.resize(0); + break; + case StateCCommentEnd1: + if (makeLastStandard) + setFormat(i - 1, 1, emptyFormat); + makeLastStandard = false; + setFormat(i, 1, m_commentFormat); + buffer.resize(0); + break; + case StateCCommentEnd2: + if (makeLastStandard) + setFormat(i - 1, 1, emptyFormat); + makeLastStandard = false; + setFormat(i, 1, m_commentFormat); + buffer.resize(0); + break; + case StateStringStart: + if (makeLastStandard) + setFormat(i - 1, 1, emptyFormat); + makeLastStandard = false; + setFormat(i, 1, emptyFormat); + buffer.resize(0); + break; + case StateString: + if (makeLastStandard) + setFormat(i - 1, 1, emptyFormat); + makeLastStandard = false; + setFormat(i, 1, m_stringFormat); + buffer.resize(0); + break; + case StateStringEnd: + if (makeLastStandard) + setFormat(i - 1, 1, emptyFormat); + makeLastStandard = false; + setFormat(i, 1, emptyFormat); + buffer.resize(0); + break; + case StateString2Start: + if (makeLastStandard) + setFormat(i - 1, 1, emptyFormat); + makeLastStandard = false; + setFormat(i, 1, emptyFormat); + buffer.resize(0); + break; + case StateString2: + if (makeLastStandard) + setFormat(i - 1, 1, emptyFormat); + makeLastStandard = false; + setFormat(i, 1, m_stringFormat); + buffer.resize(0); + break; + case StateString2End: + if (makeLastStandard) + setFormat(i - 1, 1, emptyFormat); + makeLastStandard = false; + setFormat(i, 1, emptyFormat); + buffer.resize(0); + break; + case StateNumber: + if (makeLastStandard) + setFormat(i - 1, 1, emptyFormat); + makeLastStandard = false; + setFormat( i, 1, m_numberFormat); + buffer.resize(0); + break; + case StatePreProcessor: + if (makeLastStandard) + setFormat(i - 1, 1, emptyFormat); + makeLastStandard = false; + setFormat(i, 1, m_preProcessorFormat); + buffer.resize(0); + break; + } + + lastChar = c; + i++; + if (i >= text.length()) + break; + } + + highlightKeyword(text.length(), buffer); + + if (state == StateCComment + || state == StateCCommentEnd1 + || state == StateCCommentStart2 + ) { + state = StateCComment; + } else if (state == StateString) { + state = StateString; + } else if (state == StateString2) { + state = StateString2; + } else { + state = StateStandard; + } + + setCurrentBlockState(state); +} + +void QScriptHighlighter::highlightKeyword(int currentPos, const QString &buffer) +{ + if (buffer.isEmpty()) + return; + + if (buffer.at(0) == QLatin1Char('Q')) { + setFormat(currentPos - buffer.length(), buffer.length(), m_typeFormat); + } else { + if (qscriptKeywords().contains(buffer)) { + setFormat(currentPos - buffer.length(), buffer.length(), m_keywordFormat); + } + } +} +} + +QT_END_NAMESPACE |