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/*
* OpenSCAD (www.openscad.org)
* Copyright (C) 2009-2011 Clifford Wolf <clifford@clifford.at> and
* Marius Kintel <marius@kintel.net>
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* As a special exception, you have permission to link this program
* with the CGAL library and distribute executables, as long as you
* follow the requirements of the GNU GPL in regard to all of the
* software in the executable aside from CGAL.
*
* This program 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
// based on Syntax Highlight code by Chris Olah
/* test suite
1. action: open example001, remove first {, hit f5
expected result: red highlight appears on last }, cursor moves there
action: replace first {, hit f5
expected result: red highlight disappears
2. action: type a=b
expected result: '=' is highlighted as appropriate
3. action: open example001, put '===' after first ;
expected result: red highlight appears in ===
action: remove '==='
expected result: red highlight disappears
4. action: open example001, remove last ';' but not trailing whitespace/\n
expected result: red highlight appears on last line
action: replace last ';'
expected result: red highlight disappears
5. action: open file, type in a multi-line comment
expected result: multiline comment should be highlighted appropriately
6. action: open example001, put a single '=' after first {
expected result: red highlight of '=' you added
*/
#include "highlighter.h"
#include <QTextDocument>
#include <iostream>
Highlighter::Highlighter(QTextDocument *parent)
: QSyntaxHighlighter(parent)
{
QMap<QString,QStringList> tokentypes;
QMap<QString,QTextCharFormat> typeformats;
tokentypes["operator"] << "=" << "!" << "&&" << "||" << "+" << "-" << "*" << "/" << "%" << "!" << "#" << ";";
typeformats["operator"].setForeground(Qt::blue);
tokentypes["keyword"] << "for" << "intersection_for" << "if" << "assign" << "module" << "function";
typeformats["keyword"].setForeground(Qt::darkGreen);
tokentypes["prim3d"] << "cube" << "cylinder" << "sphere" << "polyhedron";
typeformats["prim3d"].setForeground(Qt::darkBlue);
tokentypes["prim2d"] << "square" << "polygon" << "circle";
typeformats["prim2d"].setForeground(Qt::blue);
tokentypes["transform"] << "scale" << "translate" << "rotate" << "multmatrix" << "color" << "projection";
typeformats["transform"].setForeground(Qt::darkGreen);
tokentypes["import"] << "include" << "use" << "import_stl";
typeformats["import"].setForeground(Qt::darkYellow);
tokentypes["special"] << "$children" << "child" << "$fn" << "$fa" << "$fb";
typeformats["special"].setForeground(Qt::darkGreen);
tokentypes["csgop"] << "union" << "intersection" << "difference" << "render";
typeformats["csgop"].setForeground(Qt::darkGreen);
tokentypes["extrude"] << "linear_extrude" << "rotate_extrude";
typeformats["extrude"].setForeground(Qt::darkGreen);
// for speed - put all tokens into single QHash, mapped to their format
QList<QString>::iterator ki;
QList<QString> toktypes = tokentypes.keys();
for ( ki=toktypes.begin(); ki!=toktypes.end(); ++ki ) {
QString toktype = *ki;
QStringList::iterator it;
for ( it = tokentypes[toktype].begin(); it < tokentypes[toktype].end(); ++it) {
QString token = *it;
//std::cout << token.toStdString() << "\n";
formatMap[ token ] = typeformats [ toktype ];
}
}
quoteFormat.setForeground(Qt::darkMagenta);
commentFormat.setForeground(Qt::darkCyan);
errorFormat.setBackground(Qt::red);
// format tweaks
formatMap[ "%" ].setFontWeight(QFont::Bold);
separators << tokentypes["operator"];
separators << "(" << ")" << "[" << "]";
lastErrorBlock = parent->begin();
}
void Highlighter::highlightError(int error_pos)
{
QTextBlock err_block = document()->findBlock(error_pos);
std::cout << "error pos: " << error_pos << " doc len: " << document()->characterCount() << "\n";
errorPos = error_pos;
errorState = true;
//if (errorPos == document()->characterCount()-1) errorPos--;
rehighlightBlock( err_block ); // QT 4.6
errorState = false;
lastErrorBlock = err_block;
}
void Highlighter::unhighlightLastError()
{
rehighlightBlock( lastErrorBlock );
}
#include <iostream>
void Highlighter::highlightBlock(const QString &text)
{
std::cout << "block[" << currentBlock().position() << ":"
<< currentBlock().length() + currentBlock().position() << "]"
<< ", err:" << errorPos << ", text:'" << text.toStdString() << "'\n";
// Split the block into pieces and highlight each as appropriate
QString newtext = text;
QStringList::iterator sep, token;
int tokindex = -1; // deals w duplicate tokens in a single block
for ( sep = separators.begin(); sep!=separators.end(); ++sep ) {
// so a=b will have '=' highlighted
newtext = newtext.replace( *sep, " " + *sep + " ");
}
QStringList tokens = newtext.split(QRegExp("\\s"));
for ( token = tokens.begin(); token!=tokens.end(); ++token ){
if ( formatMap.contains( *token ) ) {
tokindex = text.indexOf( *token, tokindex+1 );
// Speed note: setFormat() is the big slowdown in all of this code
setFormat( tokindex, token->size(), formatMap[ *token ]);
// std::cout << "found tok '" << (*token).toStdString() << "' at " << tokindex << "\n";
}
}
// Quoting and Comments.
// fixme multiline coments dont work
state_e state = (state_e) previousBlockState();
for (int n = 0; n < text.size(); ++n){
if (state == NORMAL){
if (text[n] == '"'){
state = QUOTE;
setFormat(n,1,quoteFormat);
} else if (text[n] == '/'){
if (text[n+1] == '/'){
setFormat(n,text.size(),commentFormat);
break;
} else if (text[n+1] == '*'){
setFormat(n++,2,commentFormat);
state = COMMENT;
}
}
} else if (state == QUOTE){
setFormat(n,1,quoteFormat);
if (text[n] == '"' && text[n-1] != '\\')
state = NORMAL;
} else if (state == COMMENT){
setFormat(n,1,commentFormat);
if (text[n] == '*' && text[n+1] == '/'){
setFormat(++n,1,commentFormat);
state = NORMAL;
}
}
}
// Highlight an error. Do it last to 'overwrite' other formatting.
if (errorState) {
setFormat( errorPos - currentBlock().position() - 1, 1, errorFormat);
}
}
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