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LnHighlighter.cpp
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LnHighlighter.cpp
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/*
* Copyright 2024 Rochus Keller <mailto:[email protected]>
*
* This file is part of the Luon IDE application.
*
* The following is the license that applies to this copy of the
* library. For a license to use the library under conditions
* other than those described here, please email to [email protected].
*
* GNU General Public License Usage
* This file may be used under the terms of the GNU General Public
* License (GPL) versions 2.0 or 3.0 as published by the Free Software
* Foundation and appearing in the file LICENSE.GPL included in
* the packaging of this file. Please review the following information
* to ensure GNU General Public Licensing requirements will be met:
* http://www.fsf.org/licensing/licenses/info/GPLv2.html and
* http://www.gnu.org/copyleft/gpl.html.
*/
// Adopted from the Oberon+ IDE
#include "LnHighlighter.h"
#include "LnLexer.h"
#include <QBuffer>
#include <QtDebug>
using namespace Ln;
Highlighter::Highlighter(QTextDocument* parent) :
QSyntaxHighlighter(parent)
{
for( int i = 0; i < C_Max; i++ )
{
d_format[i].setFontWeight(QFont::Normal);
d_format[i].setForeground(Qt::black);
d_format[i].setBackground(Qt::transparent);
}
d_format[C_Num].setForeground(QColor(0, 153, 153));
d_format[C_Str].setForeground(QColor(208, 16, 64));
d_format[C_Cmt].setForeground(QColor(153, 153, 136));
d_format[C_Kw].setForeground(QColor(68, 85, 136));
d_format[C_Kw].setFontWeight(QFont::Bold);
d_format[C_Op].setForeground(QColor(153, 0, 0));
d_format[C_Op].setFontWeight(QFont::Bold);
d_format[C_Type].setForeground(QColor(153, 0, 115));
d_format[C_Type].setFontWeight(QFont::Bold);
//d_format[C_Pp].setForeground(QColor(0, 134, 179));
d_format[C_Pp].setFontWeight(QFont::Bold);
d_format[C_Pp].setForeground(QColor(0, 128, 0));
d_format[C_Pp].setBackground(QColor(230, 255, 230));
//d_builtins = createBuiltins();
}
void Highlighter::addBuiltIn(const QByteArray& bi)
{
d_builtins << bi;
d_builtins << bi.toLower();
}
QTextCharFormat Highlighter::formatForCategory(int c) const
{
return d_format[c];
}
#if 0
QSet<QByteArray> Highlighter::createBuiltins(bool withLowercase)
{
QSet<QByteArray> res = CodeModel::getBuitinIdents().toSet();
if( withLowercase )
{
QSet<QByteArray> tmp = res;
QSet<QByteArray>::const_iterator i;
for( i = tmp.begin(); i != tmp.end(); ++i )
res.insert( (*i).toLower() );
}
return res;
}
#endif
void Highlighter::highlightBlock(const QString& text)
{
const int previousBlockState_ = previousBlockState();
int lexerState = 0, initialBraceDepth = 0;
if (previousBlockState_ != -1) {
lexerState = previousBlockState_ & 0xff;
initialBraceDepth = previousBlockState_ >> 8;
}
int braceDepth = initialBraceDepth;
int start = 0;
if( lexerState == 1 )
{
// wir sind in einem Multi Line Comment
// suche das Ende
QTextCharFormat f = formatForCategory(C_Cmt);
// f.setProperty( TokenProp, int(Tok_Comment) );
int pos = 0;
Lexer::parseComment( text.toLatin1(), pos, lexerState );
if( lexerState > 0 )
{
// the whole block ist part of the comment
lexerState = 1; // lexerState can have higher value if nested
setFormat( start, text.size(), f );
setCurrentBlockState( (braceDepth << 8) | lexerState);
return;
}else
{
// End of Comment found
setFormat( start, pos , f );
lexerState = 0;
braceDepth--;
start = pos;
}
}else if( lexerState == 2 )
{
// wir sind in einem multi line hex string
QTextCharFormat f = formatForCategory(C_Str);
// f.setProperty( TokenProp, int(Tok_hexstring) );
const int pos = text.indexOf('$');
if( pos == -1 )
{
// the whole block ist part of the hex string
setFormat( start, text.size(), f );
setCurrentBlockState( (braceDepth << 8) | lexerState);
return;
}else
{
// End of hex string found
setFormat( start, pos , f );
lexerState = 0;
braceDepth--;
start = pos;
}
}else if( lexerState == 3 )
{
// wir sind in einem multi preprocessor command
QTextCharFormat f = formatForCategory(C_Pp);
int pos = text.indexOf("*>");
if( pos == -1 )
{
// the whole block ist part of the hex string
setFormat( start, text.size(), f );
setCurrentBlockState( (braceDepth << 8) | lexerState);
return;
}else
{
// End of preprocessor command found
pos += 2;
setFormat( start, pos , f );
lexerState = 0;
braceDepth--;
start = pos;
}
}
Lexer lex;
lex.setIgnoreComments(false);
lex.setPackComments(false);
int startPp;
QList<Token> tokens = lex.tokens(text.mid(start));
for( int i = 0; i < tokens.size(); ++i )
{
Token &t = tokens[i];
t.d_colNr += start;
QTextCharFormat f;
if( t.d_type == Tok_Comment )
f = formatForCategory(C_Cmt); // one line comment
else if( t.d_type == Tok_Latt )
{
braceDepth++;
f = formatForCategory(C_Cmt);
lexerState = 1;
}else if( t.d_type == Tok_LtStar )
{
braceDepth++;
f = formatForCategory(C_Pp);
startPp = t.d_colNr-1;
lexerState = 3;
}else if( t.d_type == Tok_StarGt )
{
braceDepth--;
f = formatForCategory(C_Pp);
lexerState = 0;
}else if(t.d_type == Tok_hexstring )
{
f = formatForCategory(C_Str);
}else if( t.d_type == Tok_Dlr )
{
if( !t.d_val.isEmpty() )
{
braceDepth++;
lexerState = 2;
// multi line hex string
}else
{
braceDepth--;
lexerState = 0;
}
f = formatForCategory(C_Str);
}else if( t.d_type == Tok_Ratt )
{
braceDepth--;
f = formatForCategory(C_Cmt);
lexerState = 0;
}else if( t.d_type == Tok_string || t.d_type == Tok_hexchar )
f = formatForCategory(C_Str);
else if( t.d_type == Tok_real || t.d_type == Tok_integer )
f = formatForCategory(C_Num);
else if( tokenTypeIsLiteral(t.d_type) )
{
f = formatForCategory(C_Op);
}else if( tokenTypeIsKeyword(t.d_type) )
{
f = formatForCategory(C_Kw);
}else if( t.d_type == Tok_ident )
{
if( d_builtins.contains(t.d_val) )
f = formatForCategory(C_Type);
else
f = formatForCategory(C_Ident);
}
if( lexerState == 3 )
setFormat( startPp, t.d_colNr - startPp + t.d_len, formatForCategory(C_Pp) );
else if( f.isValid() )
setFormat( t.d_colNr-1, t.d_len, f );
}
setCurrentBlockState((braceDepth << 8) | lexerState );
}
LogPainter::LogPainter(QTextDocument* parent):QSyntaxHighlighter(parent)
{
}
void LogPainter::highlightBlock(const QString& text)
{
QColor c = Qt::black;
if( text.startsWith("WRN:") )
c = Qt::blue;
else if( text.startsWith("ERR:") )
c = Qt::red;
setFormat( 0, text.size(), c );
}