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/*
Actionaz
Copyright (C) 2008-2014 Jonathan Mercier-Ganady
Actionaz is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Actionaz is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Contact : jmgr@jmgr.info
*/
// This file uses some code lines from the Ofi Labs X2 project
// Copyright (C) 2010 Ariya Hidayat <ariya.hidayat@gmail.com>
// Licensed under GNU/GPLv3
#include "codehighlighter.h"
#include "keywords.h"
#include <QFile>
#include <QDebug>
namespace ActionTools
{
CodeHighlighter::CodeHighlighter(QTextDocument *parent)
: QSyntaxHighlighter(parent)
{
mFormats[KeywordFormat].setForeground(Qt::darkBlue);
mFormats[KeywordFormat].setFontWeight(QFont::Bold);
mFormats[ReservedFormat].setForeground(Qt::red);
mFormats[ReservedFormat].setFontWeight(QFont::Bold);
mFormats[ReservedFormat].setFontStrikeOut(true);
mFormats[CodeObjectsFormat].setForeground(Qt::darkBlue);
mFormats[CodeObjectsFormat].setFontWeight(QFont::Bold);
mFormats[OperatorFormat].setForeground(Qt::red);
mFormats[NumberFormat].setForeground(Qt::darkMagenta);
mFormats[CommentFormat].setForeground(Qt::darkGreen);
mFormats[StringFormat].setForeground(Qt::darkRed);
foreach(const QString &keyword, usedKeywords)
mUsedKeywords.insert(keyword);
foreach(const QString &keyword, reservedKeywords)
mReservedKeywords.insert(keyword);
}
void CodeHighlighter::highlightBlock(const QString &text)
{
// parsing state
enum
{
Start = 0,
Number = 1,
Identifier = 2,
String = 3,
Comment = 4,
Regex = 5
};
QList<int> bracketPositions;
int blockState = previousBlockState();
int bracketLevel = blockState >> 4;
int state = blockState & 15;
if (blockState < 0)
{
bracketLevel = 0;
state = Start;
}
int start = 0;
int i = 0;
while (i <= text.length())
{
QChar ch = (i < text.length()) ? text.at(i) : QChar();
QChar next = (i < text.length() - 1) ? text.at(i + 1) : QChar();
switch (state)
{
case Start:
start = i;
if (ch.isSpace())
{
++i;
}
else if (ch.isDigit())
{
++i;
state = Number;
}
else if (ch.isLetter() || ch == '_')
{
++i;
state = Identifier;
}
else if (ch == '\'' || ch == '\"')
{
++i;
state = String;
}
else if (ch == '/' && next == '*')
{
++i;
++i;
state = Comment;
}
else if (ch == '/' && next == '/')
{
i = text.length();
setFormat(start, text.length(), mFormats[CommentFormat]);
}
else if (ch == '/' && next != '*')
{
++i;
state = Regex;
}
else
{
if (!QString("(){}[]").contains(ch))
setFormat(start, 1, mFormats[OperatorFormat]);
if (ch =='{' || ch == '}')
{
bracketPositions += i;
if (ch == '{')
bracketLevel++;
else
bracketLevel--;
}
++i;
state = Start;
}
break;
case Number:
if (ch.isSpace() || !ch.isDigit())
{
setFormat(start, i - start, mFormats[NumberFormat]);
state = Start;
}
else
++i;
break;
case Identifier:
if (ch.isSpace() || !(ch.isDigit() || ch.isLetter() || ch == '_'))
{
QString token = text.mid(start, i - start).trimmed();
if (mUsedKeywords.contains(token))
setFormat(start, i - start, mFormats[KeywordFormat]);
else if (mReservedKeywords.contains(token))
setFormat(start, i - start, mFormats[ReservedFormat]);
else if (mCodeObjects.contains(token))
setFormat(start, i - start, mFormats[CodeObjectsFormat]);
state = Start;
}
else
++i;
break;
case String:
if (ch == text.at(start))
{
QChar prev = (i > 0) ? text.at(i - 1) : QChar();
if (prev != '\\')
{
++i;
setFormat(start, i - start, mFormats[StringFormat]);
state = Start;
}
else
++i;
}
else
++i;
break;
case Comment:
if (ch == '*' && next == '/')
{
++i;
++i;
setFormat(start, i - start, mFormats[CommentFormat]);
state = Start;
}
else
++i;
break;
case Regex:
if (ch == '/')
{
QChar prev = (i > 0) ? text.at(i - 1) : QChar();
if (prev != '\\')
{
++i;
setFormat(start, i - start, mFormats[StringFormat]);
state = Start;
}
else
++i;
}
else
++i;
break;
default:
state = Start;
break;
}
}
if (state == Comment)
setFormat(start, text.length(), mFormats[CommentFormat]);
else
state = Start;
}
void CodeHighlighter::addCodeObject(const QString &name)
{
mCodeObjects.insert(name);
}
}
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