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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 544 insertions, 0 deletions

diff --git a/src/scripttools/debugging/qscriptsyntaxhighlighter.cpp b/src/scripttools/debugging/qscriptsyntaxhighlighter.cpp
new file mode 100644
index 0000000..3d2ee65
--- /dev/null
+++ b/src/scripttools/debugging/qscriptsyntaxhighlighter.cpp
@@ -0,0 +1,544 @@
+/****************************************************************************
+**
+** 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 QtSCriptTools module 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 "qscriptsyntaxhighlighter_p.h"
+#include "private/qfunctions_p.h"
+
+#ifndef QT_NO_SYNTAXHIGHLIGHTER
+
+QT_BEGIN_NAMESPACE
+
+enum ScriptIds {
+    Comment = 1,
+    Number,
+    String,
+    Type,
+    Keyword,
+    PreProcessor,
+    Label
+};
+
+#define MAX_KEYWORD 63
+static const char *const keywords[MAX_KEYWORD] = {
+    "Infinity",
+    "NaN",
+    "abstract",
+    "boolean",
+    "break",
+    "byte",
+    "case",
+    "catch",
+    "char",
+    "class",
+    "const",
+    "constructor",
+    "continue",
+    "debugger",
+    "default",
+    "delete",
+    "do",
+    "double",
+    "else",
+    "enum",
+    "export",
+    "extends",
+    "false",
+    "final",
+    "finally",
+    "float",
+    "for",
+    "function",
+    "goto",
+    "if",
+    "implements",
+    "import",
+    "in",
+    "instanceof",
+    "int",
+    "interface",
+    "long",
+    "native",
+    "new",
+    "package",
+    "private",
+    "protected",
+    "public",
+    "return",
+    "short",
+    "static",
+    "super",
+    "switch",
+    "synchronized",
+    "this",
+    "throw",
+    "throws",
+    "transient",
+    "true",
+    "try",
+    "typeof",
+    "undefined",
+    "var",
+    "void",
+    "volatile",
+    "while",
+    "with",    // end of array
+    0
+};
+
+struct KeywordHelper
+{
+    inline KeywordHelper(const QString &word) : needle(word) {}
+    const QString needle;
+};
+
+Q_STATIC_GLOBAL_OPERATOR bool operator<(const KeywordHelper &helper, const char *kw)
+{
+    return helper.needle < QLatin1String(kw);
+}
+
+Q_STATIC_GLOBAL_OPERATOR bool operator<(const char *kw, const KeywordHelper &helper)
+{
+    return QLatin1String(kw) < helper.needle;
+}
+
+static bool isKeyword(const QString &word)
+{
+    const char * const *start = &keywords[0];
+    const char * const *end = &keywords[MAX_KEYWORD - 1];
+    const char * const *kw = qBinaryFind(start, end, KeywordHelper(word));
+
+    return kw != end;
+}
+
+QScriptSyntaxHighlighter::QScriptSyntaxHighlighter(QTextDocument *document)
+    : QSyntaxHighlighter(document)
+{
+
+    m_formats[ScriptNumberFormat].setForeground(Qt::darkBlue);
+    m_formats[ScriptStringFormat].setForeground(Qt::darkGreen);
+    m_formats[ScriptTypeFormat].setForeground(Qt::darkMagenta);
+    m_formats[ScriptKeywordFormat].setForeground(Qt::darkYellow);
+    m_formats[ScriptPreprocessorFormat].setForeground(Qt::darkBlue);
+    m_formats[ScriptLabelFormat].setForeground(Qt::darkRed);
+    m_formats[ScriptCommentFormat].setForeground(Qt::darkGreen);
+    m_formats[ScriptCommentFormat].setFontItalic(true);
+}
+
+QScriptSyntaxHighlighter::~QScriptSyntaxHighlighter()
+{
+}
+
+void QScriptSyntaxHighlighter::highlightBlock(const QString &text)
+{
+
+    // states
+    enum States { StateStandard, StateCommentStart1, StateCCommentStart2,
+                  StateScriptCommentStart2, StateCComment, StateScriptComment, StateCCommentEnd1,
+                  StateCCommentEnd2, StateStringStart, StateString, StateStringEnd,
+                  StateString2Start, StateString2, StateString2End,
+                  StateNumber, StatePreProcessor, NumStates  };
+
+    // tokens
+    enum Tokens { InputAlpha, InputNumber, InputAsterix, InputSlash, InputParen,
+                  InputSpace, InputHash, InputQuotation, InputApostrophe, InputSep, NumTokens };
+
+    static uchar table[NumStates][NumTokens] = {
+        { StateStandard,      StateNumber,     StateStandard,       StateCommentStart1,    StateStandard,   StateStandard,   StatePreProcessor, StateStringStart, StateString2Start, StateStandard }, // StateStandard
+        { StateStandard,      StateNumber,   StateCCommentStart2, StateScriptCommentStart2, StateStandard,   StateStandard,   StatePreProcessor, StateStringStart, StateString2Start, StateStandard }, // StateCommentStart1
+        { StateCComment,      StateCComment,   StateCCommentEnd1,   StateCComment,         StateCComment,   StateCComment,   StateCComment,     StateCComment,    StateCComment,     StateCComment }, // StateCCommentStart2
+        { StateScriptComment,    StateScriptComment, StateScriptComment,     StateScriptComment,       StateScriptComment, StateScriptComment, StateScriptComment,   StateScriptComment,  StateScriptComment,   StateScriptComment }, // ScriptCommentStart2
+        { StateCComment,      StateCComment,   StateCCommentEnd1,   StateCComment,         StateCComment,   StateCComment,   StateCComment,     StateCComment,    StateCComment,     StateCComment }, // StateCComment
+        { StateScriptComment,    StateScriptComment, StateScriptComment,     StateScriptComment,       StateScriptComment, StateScriptComment, StateScriptComment,   StateScriptComment,  StateScriptComment,   StateScriptComment }, // StateScriptComment
+        { 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;
+    int braceDepth = 0;
+    const int previousState = previousBlockState();
+    if (previousState != -1) {
+        state = previousState & 0xff;
+        braceDepth = previousState >> 8;
+    }
+
+    if (text.isEmpty()) {
+        setCurrentBlockState(previousState);
+#if 0
+        TextEditDocumentLayout::clearParentheses(currentBlock());
+#endif
+        return;
+    }
+#if 0
+    Parentheses parentheses;
+    parentheses.reserve(20); // assume wizard level ;-)
+#endif
+    int input = -1;
+    int i = 0;
+    bool lastWasBackSlash = false;
+    bool makeLastStandard = false;
+
+    static const QString alphabeth = QLatin1String("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ");
+    static const QString mathChars = QLatin1String("xXeE");
+    static const QString numbers = QLatin1String("0123456789");
+    bool questionMark = false;
+    QChar lastChar;
+
+    int firstNonSpace = -1;
+    int lastNonSpace = -1;
+
+    for (;;) {
+        const QChar c = text.at(i);
+
+        if (lastWasBackSlash) {
+            input = InputSep;
+        } else {
+            switch (c.toAscii()) {
+                case '*':
+                    input = InputAsterix;
+                    break;
+                case '/':
+                    input = InputSlash;
+                    break;
+                case '{':
+                    braceDepth++;
+                    // fall through
+                case '(': case '[':
+                    input = InputParen;
+                    switch (state) {
+                    case StateStandard:
+                    case StateNumber:
+                    case StatePreProcessor:
+                    case StateCCommentEnd2:
+                    case StateCCommentEnd1:
+                    case StateString2End:
+                    case StateStringEnd:
+//                        parentheses.push_back(Parenthesis(Parenthesis::Opened, c, i));
+                        break;
+                    default:
+                        break;
+                    }
+                    break;
+                case '}':
+                    if (--braceDepth < 0)
+                        braceDepth = 0;
+                    // fall through
+                case ')': case ']':
+                    input = InputParen;
+                    switch (state) {
+                    case StateStandard:
+                    case StateNumber:
+                    case StatePreProcessor:
+                    case StateCCommentEnd2:
+                    case StateCCommentEnd1:
+                    case StateString2End:
+                    case StateStringEnd:
+//                        parentheses.push_back(Parenthesis(Parenthesis::Closed, c, i));
+                        break;
+                    default:
+                        break;
+                    }
+                    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;
+                              const QChar colon = QLatin1Char(':');
+                              if (state == StateStandard && !questionMark && lastChar != colon) {
+                                  const QChar nextChar = i < text.length() - 1 ?  text.at(i + 1) : QLatin1Char(' ');
+                                  if (nextChar != colon)
+                                      for (int j = 0; j < i; ++j) {
+                                          if (format(j) == emptyFormat )
+                                              setFormat(j, 1, m_formats[ScriptLabelFormat]);
+                                      }
+                              }
+                          } break;
+                default:
+                    if (!questionMark && c == QLatin1Char('?'))
+                        questionMark = true;
+                    if (c.isLetter() || c == QLatin1Char('_'))
+                        input = InputAlpha;
+                    else
+                      input = InputSep;
+                break;
+            }
+        }
+
+        if (input != InputSpace) {
+            if (firstNonSpace < 0)
+                firstNonSpace = i;
+            lastNonSpace = i;
+        }
+
+        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 (input != InputAlpha) {
+                                        highlightWord(i, buffer);
+                                        buffer = QString::null;
+                                    }
+                                } break;
+            case StateCommentStart1:
+                                if (makeLastStandard)
+                                    setFormat(i - 1, 1, emptyFormat);
+                                makeLastStandard = true;
+                                buffer = QString::null;
+                                break;
+            case StateCCommentStart2:
+                                setFormat(i - 1, 2, m_formats[ScriptCommentFormat]);
+                                makeLastStandard = false;
+//                                parentheses.push_back(Parenthesis(Parenthesis::Opened, QLatin1Char('/'), i-1));
+                                buffer = QString::null;
+                                break;
+            case StateScriptCommentStart2:
+                                setFormat(i - 1, 2, m_formats[ScriptCommentFormat]);
+                                makeLastStandard = false;
+                                buffer = QString::null;
+                                break;
+            case StateCComment:
+                                if (makeLastStandard)
+                                    setFormat(i - 1, 1, emptyFormat);
+                                makeLastStandard = false;
+                                setFormat(i, 1, m_formats[ScriptCommentFormat]);
+                                buffer = QString::null;
+                                break;
+            case StateScriptComment:
+                                if (makeLastStandard)
+                                    setFormat(i - 1, 1, emptyFormat);
+                                makeLastStandard = false;
+                                setFormat(i, 1, m_formats[ScriptCommentFormat]);
+                                buffer = QString::null;
+                                break;
+            case StateCCommentEnd1:
+                                if (makeLastStandard)
+                                    setFormat(i - 1, 1, emptyFormat);
+                                makeLastStandard = false;
+                                setFormat(i, 1, m_formats[ScriptCommentFormat]);
+                                buffer = QString::null;
+                                break;
+            case StateCCommentEnd2:
+                                if (makeLastStandard)
+                                    setFormat(i - 1, 1, emptyFormat);
+                                makeLastStandard = false;
+                                setFormat(i, 1, m_formats[ScriptCommentFormat]);
+//                                parentheses.push_back(Parenthesis(Parenthesis::Closed, QLatin1Char('/'), i));
+                                buffer = QString::null;
+                                break;
+            case StateStringStart:
+                                if (makeLastStandard)
+                                    setFormat(i - 1, 1, emptyFormat);
+                                makeLastStandard = false;
+                                setFormat(i, 1, emptyFormat);
+                                buffer = QString::null;
+                                break;
+            case StateString:
+                                if (makeLastStandard)
+                                    setFormat(i - 1, 1, emptyFormat);
+                                makeLastStandard = false;
+                                setFormat(i, 1, m_formats[ScriptStringFormat]);
+                                buffer = QString::null;
+                                break;
+            case StateStringEnd:
+                                if (makeLastStandard)
+                                    setFormat(i - 1, 1, emptyFormat);
+                                makeLastStandard = false;
+                                setFormat(i, 1, emptyFormat);
+                                buffer = QString::null;
+                                break;
+            case StateString2Start:
+                                if (makeLastStandard)
+                                    setFormat(i - 1, 1, emptyFormat);
+                                makeLastStandard = false;
+                                setFormat(i, 1, emptyFormat);
+                                buffer = QString::null;
+                                break;
+            case StateString2:
+                                if (makeLastStandard)
+                                    setFormat(i - 1, 1, emptyFormat);
+                                makeLastStandard = false;
+                                setFormat(i, 1, m_formats[ScriptStringFormat]);
+                                buffer = QString::null;
+                                break;
+            case StateString2End:
+                                if (makeLastStandard)
+                                    setFormat(i - 1, 1, emptyFormat);
+                                makeLastStandard = false;
+                                setFormat(i, 1, emptyFormat);
+                                buffer = QString::null;
+                                break;
+            case StateNumber:
+                                if (makeLastStandard)
+                                    setFormat(i - 1, 1, emptyFormat);
+                                makeLastStandard = false;
+                                setFormat(i, 1, m_formats[ScriptNumberFormat]);
+                                buffer = QString::null;
+                                break;
+            case StatePreProcessor:
+                                if (makeLastStandard)
+                                    setFormat(i - 1, 1, emptyFormat);
+                                makeLastStandard = false;
+                                setFormat(i, 1, m_formats[ScriptPreprocessorFormat]);
+                                buffer = QString::null;
+                                break;
+        }
+
+        lastChar = c;
+        i++;
+        if (i >= text.length()) {
+#if 0
+            if (TextBlockUserData *userData = TextEditDocumentLayout::testUserData(currentBlock())) {
+                userData->setHasClosingCollapse(false);
+                userData->setCollapseMode(TextBlockUserData::NoCollapse);
+            }
+            int collapse = Parenthesis::collapseAtPos(parentheses);
+            if (collapse >= 0) {
+                if (collapse == firstNonSpace)
+                    TextEditDocumentLayout::userData(currentBlock())->setCollapseMode(TextBlockUserData::CollapseThis);
+                else
+                    TextEditDocumentLayout::userData(currentBlock())->setCollapseMode(TextBlockUserData::CollapseAfter);
+            }
+            if (Parenthesis::hasClosingCollapse(parentheses)) {
+                TextEditDocumentLayout::userData(currentBlock())->setHasClosingCollapse(true);
+            }
+#endif
+
+            break;
+        }
+    }
+
+    highlightWord(text.length(), buffer);
+
+    switch (state) {
+    case  StateCComment:
+    case  StateCCommentEnd1:
+    case  StateCCommentStart2:
+        state = StateCComment;
+        break;
+    case StateString:
+        // quotes cannot span multiple lines, so if somebody starts
+        // typing a quoted string we don't need to look for the ending
+        // quote in another line (or highlight until the end of the
+        // document) and therefore slow down editing.
+        state = StateStandard;
+        break;
+    case StateString2:
+        state =  StateStandard;
+        break;
+    default:
+        state = StateStandard;
+        break;
+    }
+
+#if 0
+    TextEditDocumentLayout::setParentheses(currentBlock(), parentheses);
+#endif
+
+    setCurrentBlockState((braceDepth << 8) | state);
+}
+
+void QScriptSyntaxHighlighter::highlightWord(int currentPos, const QString &buffer)
+{
+    if (buffer.isEmpty())
+        return;
+
+    // try to highlight Qt 'identifiers' like QObject and Q_PROPERTY
+    // but don't highlight words like 'Query'
+    if (buffer.length() > 1
+        && buffer.at(0) == QLatin1Char('Q')
+        && (buffer.at(1).isUpper()
+            || buffer.at(1) == QLatin1Char('_')
+            || buffer.at(1) == QLatin1Char('t'))) {
+        setFormat(currentPos - buffer.length(), buffer.length(), m_formats[ScriptTypeFormat]);
+    } else {
+        if (isKeyword(buffer))
+            setFormat(currentPos - buffer.length(), buffer.length(), m_formats[ScriptKeywordFormat]);
+    }
+}
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_SYNTAXHIGHLIGHTER
+