/src/plugins/qmljseditor/qmljshighlighter.cpp
https://github.com/KDAB/KDAB-Creator · C++ · 334 lines · 254 code · 46 blank · 34 comment · 193 complexity · 1ff03ee02ae5eb5e8843632bbff96afb MD5 · raw file
- /**************************************************************************
- **
- ** This file is part of Qt Creator
- **
- ** Copyright (c) 2012 Nokia Corporation and/or its subsidiary(-ies).
- **
- ** Contact: Nokia Corporation (qt-info@nokia.com)
- **
- **
- ** GNU Lesser General Public License Usage
- **
- ** 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.
- **
- ** Other Usage
- **
- ** Alternatively, this file may be used in accordance with the terms and
- ** conditions contained in a signed written agreement between you and Nokia.
- **
- ** If you have questions regarding the use of this file, please contact
- ** Nokia at qt-info@nokia.com.
- **
- **************************************************************************/
- #include "qmljshighlighter.h"
- #include <QSet>
- #include <QtAlgorithms>
- #include <QDebug>
- #include <utils/qtcassert.h>
- using namespace QmlJSEditor;
- using namespace QmlJS;
- Highlighter::Highlighter(QTextDocument *parent)
- : TextEditor::SyntaxHighlighter(parent),
- m_qmlEnabled(true),
- m_inMultilineComment(false)
- {
- m_currentBlockParentheses.reserve(20);
- m_braceDepth = 0;
- m_foldingIndent = 0;
- }
- Highlighter::~Highlighter()
- {
- }
- bool Highlighter::isQmlEnabled() const
- {
- return m_qmlEnabled;
- }
- void Highlighter::setQmlEnabled(bool qmlEnabled)
- {
- m_qmlEnabled = qmlEnabled;
- }
- void Highlighter::setFormats(const QVector<QTextCharFormat> &formats)
- {
- QTC_ASSERT(formats.size() == NumFormats, return);
- qCopy(formats.begin(), formats.end(), m_formats);
- }
- void Highlighter::highlightBlock(const QString &text)
- {
- const QList<Token> tokens = m_scanner(text, onBlockStart());
- int index = 0;
- while (index < tokens.size()) {
- const Token &token = tokens.at(index);
- switch (token.kind) {
- case Token::Keyword:
- setFormat(token.offset, token.length, m_formats[KeywordFormat]);
- break;
- case Token::String:
- setFormat(token.offset, token.length, m_formats[StringFormat]);
- break;
- case Token::Comment:
- if (m_inMultilineComment && text.midRef(token.end() - 2, 2) == QLatin1String("*/")) {
- onClosingParenthesis('-', token.end() - 1, index == tokens.size()-1);
- m_inMultilineComment = false;
- } else if (!m_inMultilineComment
- && (m_scanner.state() & Scanner::MultiLineMask) == Scanner::MultiLineComment
- && index == tokens.size() - 1) {
- onOpeningParenthesis('+', token.offset, index == 0);
- m_inMultilineComment = true;
- }
- setFormat(token.offset, token.length, m_formats[CommentFormat]);
- break;
- case Token::RegExp:
- setFormat(token.offset, token.length, m_formats[StringFormat]);
- break;
- case Token::LeftParenthesis:
- onOpeningParenthesis('(', token.offset, index == 0);
- break;
- case Token::RightParenthesis:
- onClosingParenthesis(')', token.offset, index == tokens.size()-1);
- break;
- case Token::LeftBrace:
- onOpeningParenthesis('{', token.offset, index == 0);
- break;
- case Token::RightBrace:
- onClosingParenthesis('}', token.offset, index == tokens.size()-1);
- break;
- case Token::LeftBracket:
- onOpeningParenthesis('[', token.offset, index == 0);
- break;
- case Token::RightBracket:
- onClosingParenthesis(']', token.offset, index == tokens.size()-1);
- break;
- case Token::Identifier: {
- if (!m_qmlEnabled)
- break;
- const QStringRef spell = text.midRef(token.offset, token.length);
- if (maybeQmlKeyword(spell)) {
- // check the previous token
- if (index == 0 || tokens.at(index - 1).isNot(Token::Dot)) {
- if (index + 1 == tokens.size() || tokens.at(index + 1).isNot(Token::Colon)) {
- setFormat(token.offset, token.length, m_formats[KeywordFormat]);
- break;
- }
- }
- } else if (index > 0 && maybeQmlBuiltinType(spell)) {
- const Token &previousToken = tokens.at(index - 1);
- if (previousToken.is(Token::Identifier) && text.at(previousToken.offset) == QLatin1Char('p')
- && text.midRef(previousToken.offset, previousToken.length) == QLatin1String("property")) {
- setFormat(token.offset, token.length, m_formats[KeywordFormat]);
- break;
- }
- }
- } break;
- case Token::Delimiter:
- break;
- default:
- break;
- } // end swtich
- ++index;
- }
- int previousTokenEnd = 0;
- for (int index = 0; index < tokens.size(); ++index) {
- const Token &token = tokens.at(index);
- setFormat(previousTokenEnd, token.begin() - previousTokenEnd, m_formats[VisualWhitespace]);
- switch (token.kind) {
- case Token::Comment:
- case Token::String:
- case Token::RegExp: {
- int i = token.begin(), e = token.end();
- while (i < e) {
- const QChar ch = text.at(i);
- if (ch.isSpace()) {
- const int start = i;
- do {
- ++i;
- } while (i < e && text.at(i).isSpace());
- setFormat(start, i - start, m_formats[VisualWhitespace]);
- } else {
- ++i;
- }
- }
- } break;
- default:
- break;
- } // end of switch
- previousTokenEnd = token.end();
- }
- setFormat(previousTokenEnd, text.length() - previousTokenEnd, m_formats[VisualWhitespace]);
- setCurrentBlockState(m_scanner.state());
- onBlockEnd(m_scanner.state());
- }
- bool Highlighter::maybeQmlKeyword(const QStringRef &text) const
- {
- if (text.isEmpty())
- return false;
- const QChar ch = text.at(0);
- if (ch == QLatin1Char('p') && text == QLatin1String("property")) {
- return true;
- } else if (ch == QLatin1Char('a') && text == QLatin1String("alias")) {
- return true;
- } else if (ch == QLatin1Char('s') && text == QLatin1String("signal")) {
- return true;
- } else if (ch == QLatin1Char('p') && text == QLatin1String("property")) {
- return true;
- } else if (ch == QLatin1Char('r') && text == QLatin1String("readonly")) {
- return true;
- } else if (ch == QLatin1Char('i') && text == QLatin1String("import")) {
- return true;
- } else if (ch == QLatin1Char('o') && text == QLatin1String("on")) {
- return true;
- } else {
- return false;
- }
- }
- bool Highlighter::maybeQmlBuiltinType(const QStringRef &text) const
- {
- if (text.isEmpty())
- return false;
- const QChar ch = text.at(0);
- if (ch == QLatin1Char('a') && text == QLatin1String("action")) {
- return true;
- } else if (ch == QLatin1Char('b') && text == QLatin1String("bool")) {
- return true;
- } else if (ch == QLatin1Char('c') && text == QLatin1String("color")) {
- return true;
- } else if (ch == QLatin1Char('d') && text == QLatin1String("date")) {
- return true;
- } else if (ch == QLatin1Char('d') && text == QLatin1String("double")) {
- return true;
- } else if (ch == QLatin1Char('e') && text == QLatin1String("enumeration")) {
- return true;
- } else if (ch == QLatin1Char('f') && text == QLatin1String("font")) {
- return true;
- } else if (ch == QLatin1Char('i') && text == QLatin1String("int")) {
- return true;
- } else if (ch == QLatin1Char('l') && text == QLatin1String("list")) {
- return true;
- } else if (ch == QLatin1Char('p') && text == QLatin1String("point")) {
- return true;
- } else if (ch == QLatin1Char('r') && text == QLatin1String("real")) {
- return true;
- } else if (ch == QLatin1Char('r') && text == QLatin1String("rect")) {
- return true;
- } else if (ch == QLatin1Char('s') && text == QLatin1String("size")) {
- return true;
- } else if (ch == QLatin1Char('s') && text == QLatin1String("string")) {
- return true;
- } else if (ch == QLatin1Char('t') && text == QLatin1String("time")) {
- return true;
- } else if (ch == QLatin1Char('u') && text == QLatin1String("url")) {
- return true;
- } else if (ch == QLatin1Char('v') && text == QLatin1String("variant")) {
- return true;
- } else if (ch == QLatin1Char('v') && text == QLatin1String("var")) {
- return true;
- } else if (ch == QLatin1Char('v') && text == QLatin1String("vector3d")) {
- return true;
- } else {
- return false;
- }
- }
- int Highlighter::onBlockStart()
- {
- m_currentBlockParentheses.clear();
- m_braceDepth = 0;
- m_foldingIndent = 0;
- m_inMultilineComment = false;
- if (TextEditor::TextBlockUserData *userData = TextEditor::BaseTextDocumentLayout::testUserData(currentBlock())) {
- userData->setFoldingIndent(0);
- userData->setFoldingStartIncluded(false);
- userData->setFoldingEndIncluded(false);
- }
- int state = 0;
- int previousState = previousBlockState();
- if (previousState != -1) {
- state = previousState & 0xff;
- m_braceDepth = (previousState >> 8);
- m_inMultilineComment = ((state & Scanner::MultiLineMask) == Scanner::MultiLineComment);
- }
- m_foldingIndent = m_braceDepth;
- return state;
- }
- void Highlighter::onBlockEnd(int state)
- {
- typedef TextEditor::TextBlockUserData TextEditorBlockData;
- setCurrentBlockState((m_braceDepth << 8) | state);
- TextEditor::BaseTextDocumentLayout::setParentheses(currentBlock(), m_currentBlockParentheses);
- TextEditor::BaseTextDocumentLayout::setFoldingIndent(currentBlock(), m_foldingIndent);
- }
- void Highlighter::onOpeningParenthesis(QChar parenthesis, int pos, bool atStart)
- {
- if (parenthesis == QLatin1Char('{') || parenthesis == QLatin1Char('[') || parenthesis == QLatin1Char('+')) {
- ++m_braceDepth;
- // if a folding block opens at the beginning of a line, treat the entire line
- // as if it were inside the folding block
- if (atStart)
- TextEditor::BaseTextDocumentLayout::userData(currentBlock())->setFoldingStartIncluded(true);
- }
- m_currentBlockParentheses.push_back(Parenthesis(Parenthesis::Opened, parenthesis, pos));
- }
- void Highlighter::onClosingParenthesis(QChar parenthesis, int pos, bool atEnd)
- {
- if (parenthesis == QLatin1Char('}') || parenthesis == QLatin1Char(']') || parenthesis == QLatin1Char('-')) {
- --m_braceDepth;
- if (atEnd)
- TextEditor::BaseTextDocumentLayout::userData(currentBlock())->setFoldingEndIncluded(true);
- else
- m_foldingIndent = qMin(m_braceDepth, m_foldingIndent); // folding indent is the minimum brace depth of a block
- }
- m_currentBlockParentheses.push_back(Parenthesis(Parenthesis::Closed, parenthesis, pos));
- }