-cmake syntax highlighting, with the help from Daniel

Alex

Merge-request: 2164
Reviewed-by: dt <qtc-committer@nokia.com>

src/plugins/cmakeprojectmanager/cmakehighlighter.cpp

@@ -0,0 +1,151 @@
+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** Commercial Usage
+**
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://qt.nokia.com/contact.
+**
+**************************************************************************/
+
+#include "cmakehighlighter.h"
+
+#include <QtCore/QRegExp>
+#include <QtGui/QColor>
+#include <QtGui/QTextDocument>
+#include <QtGui/QTextEdit>
+
+using namespace CMakeProjectManager::Internal;
+
+
+static bool isVariable(const QString &word)
+{
+  if (word.length() < 4) { // must be at least "${.}"
+    return false;
+  }
+
+  return word.startsWith("${") && word.endsWith('}');
+}
+
+
+CMakeHighlighter::CMakeHighlighter(QTextDocument *document) :
+    QSyntaxHighlighter(document)
+{
+}
+
+
+void CMakeHighlighter::highlightBlock(const QString &text)
+{
+    QString buf;
+    bool inCommentMode = false;
+    bool inStringMode = (previousBlockState() == 1);
+
+    QTextCharFormat emptyFormat;
+    int i=0;
+    for (i=0; i < text.length(); i++) {
+        const QChar c = text.at(i);
+        if (inCommentMode) {
+            setFormat(i, 1, m_formats[CMakeCommentFormat]);
+        }
+        else {
+            if (c == '#') {
+                if (!inStringMode) {
+                    inCommentMode = true;
+                    setFormat(i, 1, m_formats[CMakeCommentFormat]);
+                    buf.clear();
+                }
+                else {
+                    buf += c;
+                }
+            }
+            else if (c == '(') {
+                if (!inStringMode) {
+                    if (!buf.isEmpty()) {
+                        setFormat(i - buf.length(), buf.length(), m_formats[CMakeFunctionFormat]);
+                    }
+                    buf.clear();
+                }
+                else {
+                  buf += c;
+                }
+            }
+            else if (c.isSpace()) {
+                if (!inStringMode) {
+                    buf.clear();
+                }
+                else {
+                    buf += c;
+                }
+            }
+            else if (c == '\"') {
+                buf += c;
+                if (inStringMode) {
+                    setFormat(i + 1 - buf.length(), buf.length(), m_formats[CMakeStringFormat]);
+                    buf.clear();
+                }
+                else {
+                    setFormat(i, 1, m_formats[CMakeStringFormat]);
+                }
+                inStringMode = !inStringMode;
+            }
+            else if (c == '\\') {
+                setFormat(i, 1, emptyFormat);
+                buf += c;
+                i++;
+                if (i < text.length()) {
+                    text.at(i);
+                    setFormat(i, 1, emptyFormat);
+                    buf += c;
+                }
+            }
+            else if (c == '$') {
+              if (inStringMode) {
+                  setFormat(i - buf.length(), buf.length(), m_formats[CMakeStringFormat]);
+              }
+              buf.clear();
+              buf += c;
+              setFormat(i, 1, emptyFormat);
+            }
+            else if (c == '}') {
+                buf += c;
+                if (isVariable(buf))
+                {
+                    setFormat(i + 1 - buf.length(), buf.length(), m_formats[CMakeVariableFormat]);
+                    buf.clear();
+                }
+            }
+            else {
+                buf += c;
+                setFormat(i, 1, emptyFormat);
+            }
+        }
+    }
+
+    if (inStringMode) {
+        setFormat(i - buf.length(), buf.length(), m_formats[CMakeStringFormat]);
+        setCurrentBlockState(1);
+    }
+    else {
+        setCurrentBlockState(0);
+    }
+}
+