Commit 0dc86631 authored by Jan Möbius's avatar Jan Möbius

Added yntax Highlighting for python

parent 0d0651b3
/*
This is a C++ port of the following PyQt example
http://diotavelli.net/PyQtWiki/Python%20syntax%20highlighting
C++ port by Frankie Simon (www.kickdrive.de, www.fuh-edv.de)
The following free software license applies for this file ("X11 license"):
Permission is hereby granted, free of charge, to any person obtaining a copy of this software
and associated documentation files (the "Software"), to deal in the Software without restriction,
including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial
portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "PythonSyntaxHighlighter.hh"
PythonSyntaxHighlighter::PythonSyntaxHighlighter(QTextDocument *parent)
: QSyntaxHighlighter(parent)
{
keywords = QStringList() << "and" << "assert" << "break" << "class" << "continue" << "def" <<
"del" << "elif" << "else" << "except" << "exec" << "finally" <<
"for" << "from" << "global" << "if" << "import" << "in" <<
"is" << "lambda" << "not" << "or" << "pass" << "print" <<
"raise" << "return" << "try" << "while" << "yield" <<
"None" << "True" << "False";
operators = QStringList() << "=" <<
// Comparison
"==" << "!=" << "<" << "<=" << ">" << ">=" <<
// Arithmetic
"\\+" << "-" << "\\*" << "/" << "//" << "%" << "\\*\\*" <<
// In-place
"\\+=" << "-=" << "\\*=" << "/=" << "%=" <<
// Bitwise
"\\^" << "\\|" << "&" << "~" << ">>" << "<<";
braces = QStringList() << "{" << "}" << "\\(" << "\\)" << "\\[" << "]";
basicStyles.insert("keyword", getTextCharFormat("blue"));
basicStyles.insert("operator", getTextCharFormat("red"));
basicStyles.insert("brace", getTextCharFormat("darkGray"));
basicStyles.insert("defclass", getTextCharFormat("black", "bold"));
basicStyles.insert("brace", getTextCharFormat("darkGray"));
basicStyles.insert("string", getTextCharFormat("magenta"));
basicStyles.insert("string2", getTextCharFormat("darkMagenta"));
basicStyles.insert("comment", getTextCharFormat("darkGreen", "italic"));
basicStyles.insert("self", getTextCharFormat("black", "italic"));
basicStyles.insert("numbers", getTextCharFormat("brown"));
triSingleQuote.setPattern("'''");
triDoubleQuote.setPattern("\"\"\"");
initializeRules();
}
void PythonSyntaxHighlighter::initializeRules()
{
foreach (QString currKeyword, keywords)
{
rules.append(HighlightingRule(QString("\\b%1\\b").arg(currKeyword), 0, basicStyles.value("keyword")));
}
foreach (QString currOperator, operators)
{
rules.append(HighlightingRule(QString("%1").arg(currOperator), 0, basicStyles.value("operator")));
}
foreach (QString currBrace, braces)
{
rules.append(HighlightingRule(QString("%1").arg(currBrace), 0, basicStyles.value("brace")));
}
// 'self'
rules.append(HighlightingRule("\\bself\\b", 0, basicStyles.value("self")));
// Double-quoted string, possibly containing escape sequences
// FF: originally in python : r'"[^"\\]*(\\.[^"\\]*)*"'
rules.append(HighlightingRule("\"[^\"\\\\]*(\\\\.[^\"\\\\]*)*\"", 0, basicStyles.value("string")));
// Single-quoted string, possibly containing escape sequences
// FF: originally in python : r"'[^'\\]*(\\.[^'\\]*)*'"
rules.append(HighlightingRule("'[^'\\\\]*(\\\\.[^'\\\\]*)*'", 0, basicStyles.value("string")));
// 'def' followed by an identifier
// FF: originally: r'\bdef\b\s*(\w+)'
rules.append(HighlightingRule("\\bdef\\b\\s*(\\w+)", 1, basicStyles.value("defclass")));
// 'class' followed by an identifier
// FF: originally: r'\bclass\b\s*(\w+)'
rules.append(HighlightingRule("\\bclass\\b\\s*(\\w+)", 1, basicStyles.value("defclass")));
// From '#' until a newline
// FF: originally: r'#[^\\n]*'
rules.append(HighlightingRule("#[^\\n]*", 0, basicStyles.value("comment")));
// Numeric literals
rules.append(HighlightingRule("\\b[+-]?[0-9]+[lL]?\\b", 0, basicStyles.value("numbers"))); // r'\b[+-]?[0-9]+[lL]?\b'
rules.append(HighlightingRule("\\b[+-]?0[xX][0-9A-Fa-f]+[lL]?\\b", 0, basicStyles.value("numbers"))); // r'\b[+-]?0[xX][0-9A-Fa-f]+[lL]?\b'
rules.append(HighlightingRule("\\b[+-]?[0-9]+(?:\\.[0-9]+)?(?:[eE][+-]?[0-9]+)?\\b", 0, basicStyles.value("numbers"))); // r'\b[+-]?[0-9]+(?:\.[0-9]+)?(?:[eE][+-]?[0-9]+)?\b'
}
void PythonSyntaxHighlighter::highlightBlock(const QString &text)
{
foreach (HighlightingRule currRule, rules)
{
int idx = currRule.pattern.indexIn(text, 0);
while (idx >= 0)
{
// Get index of Nth match
idx = currRule.pattern.pos(currRule.nth);
int length = currRule.pattern.cap(currRule.nth).length();
setFormat(idx, length, currRule.format);
idx = currRule.pattern.indexIn(text, idx + length);
}
}
setCurrentBlockState(0);
// Do multi-line strings
bool isInMultilne = matchMultiline(text, triSingleQuote, 1, basicStyles.value("string2"));
if (!isInMultilne)
isInMultilne = matchMultiline(text, triDoubleQuote, 2, basicStyles.value("string2"));
}
bool PythonSyntaxHighlighter::matchMultiline(const QString &text, const QRegExp &delimiter, const int inState, const QTextCharFormat &style)
{
int start = -1;
int add = -1;
int end = -1;
int length = 0;
// If inside triple-single quotes, start at 0
if (previousBlockState() == inState) {
start = 0;
add = 0;
}
// Otherwise, look for the delimiter on this line
else {
start = delimiter.indexIn(text);
// Move past this match
add = delimiter.matchedLength();
}
// As long as there's a delimiter match on this line...
while (start >= 0) {
// Look for the ending delimiter
end = delimiter.indexIn(text, start + add);
// Ending delimiter on this line?
if (end >= add) {
length = end - start + add + delimiter.matchedLength();
setCurrentBlockState(0);
}
// No; multi-line string
else {
setCurrentBlockState(inState);
length = text.length() - start + add;
}
// Apply formatting and look for next
setFormat(start, length, style);
start = delimiter.indexIn(text, start + length);
}
// Return True if still inside a multi-line string, False otherwise
if (currentBlockState() == inState)
return true;
else
return false;
}
const QTextCharFormat PythonSyntaxHighlighter::getTextCharFormat(const QString &colorName, const QString &style)
{
QTextCharFormat charFormat;
QColor color(colorName);
charFormat.setForeground(color);
if (style.contains("bold", Qt::CaseInsensitive))
charFormat.setFontWeight(QFont::Bold);
if (style.contains("italic", Qt::CaseInsensitive))
charFormat.setFontItalic(true);
return charFormat;
}
/*
This is a C++ port of the following PyQt example
http://diotavelli.net/PyQtWiki/Python%20syntax%20highlighting
C++ port by Frankie Simon (docklight.de, www.fuh-edv.de)
The following free software license applies for this file ("X11 license"):
Permission is hereby granted, free of charge, to any person obtaining a copy of this software
and associated documentation files (the "Software"), to deal in the Software without restriction,
including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial
portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#pragma once
#include <QSyntaxHighlighter>
//! Container to describe a highlighting rule. Based on a regular expression, a relevant match # and the format.
class HighlightingRule
{
public:
HighlightingRule(const QString &patternStr, int n, const QTextCharFormat &matchingFormat)
{
originalRuleStr = patternStr;
pattern = QRegExp(patternStr);
nth = n;
format = matchingFormat;
}
QString originalRuleStr;
QRegExp pattern;
int nth;
QTextCharFormat format;
};
//! Implementation of highlighting for Python code.
class PythonSyntaxHighlighter : public QSyntaxHighlighter
{
Q_OBJECT
public:
PythonSyntaxHighlighter(QTextDocument *parent = 0);
protected:
void highlightBlock(const QString &text);
private:
QStringList keywords;
QStringList operators;
QStringList braces;
QHash<QString, QTextCharFormat> basicStyles;
void initializeRules();
//! Highlighst multi-line strings, returns true if after processing we are still within the multi-line section.
bool matchMultiline(const QString &text, const QRegExp &delimiter, const int inState, const QTextCharFormat &style);
const QTextCharFormat getTextCharFormat(const QString &colorName, const QString &style = QString());
QList<HighlightingRule> rules;
QRegExp triSingleQuote;
QRegExp triDoubleQuote;
};
......@@ -47,6 +47,7 @@
#endif
#include "pythonWidget.hh"
#include "PythonSyntaxHighlighter.hh"
#include <iostream>
#include <QObject>
......@@ -61,7 +62,7 @@ PythonWidget::PythonWidget(QWidget *parent )
{
setupUi(this);
PythonSyntaxHighlighter *pythonHighlighter = new PythonSyntaxHighlighter(scriptWidget->document());
connect (RunButton, SIGNAL( clicked() ), this, SLOT( runScript()) );
......@@ -95,8 +96,9 @@ void PythonWidget::runScript() {
#ifdef PYTHON_ENABLED
PythonInterpreter* interpreter = PythonInterpreter::getInstance();
interpreter->runScript(scriptWidget->toPlainText());
#else
std::cerr << "OpenFlipper is not compiled with python support. Unable to execute script!" << std::endl;
#endif
}
......
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