Commit 9656a42f authored by Konstantin Tokarev's avatar Konstantin Tokarev Committed by Leandro Melo
Browse files

Added Utils::BraceMatcher.



Change-Id: I76676ce75bf029a13e2e848c6dd746eabc4f1d39
Reviewed-by: default avatarLeandro Melo <leandro.melo@nokia.com>
parent 77e10140
/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2012 Konstantin Tokarev <annulen@yandex.ru>
**
** Contact: http://www.qt-project.org/
**
**
** GNU Lesser General Public License Usage
**
** 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.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** Other Usage
**
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**************************************************************************/
#include "bracematcher.h"
#include <QTextDocument>
#include <QTextCursor>
/*!
\class Utils::BraceMatcher
\brief Generic autocompleter of braces and quotes.
This is a helper class for autocompleter implementations. To use it,
define "brace", "quote", and "delimiter" characters for given language.
*/
namespace Utils {
/*!
* Adds a pair of characters, corresponding to opening and closing braces.
*/
void BraceMatcher::addBraceCharPair(const QChar opening, const QChar closing)
{
m_braceChars[opening] = closing;
}
/*!
* Adds quote character
*/
void BraceMatcher::addQuoteChar(const QChar quote)
{
m_quoteChars << quote;
}
/*!
* Adds separator character that should be skipped when overtyping it, e.g.
* it could be ';' or ',' in C-like languages.
*/
void BraceMatcher::addDelimiterChar(const QChar sep)
{
m_delimiterChars << sep;
}
bool BraceMatcher::shouldInsertMatchingText(const QTextCursor &tc) const
{
QTextDocument *doc = tc.document();
return shouldInsertMatchingText(doc->characterAt(tc.selectionEnd()));
}
bool BraceMatcher::shouldInsertMatchingText(const QChar lookAhead) const
{
return lookAhead.isSpace()
|| isQuote(lookAhead)
|| isDelimiter(lookAhead)
|| isClosingBrace(lookAhead);
}
QString BraceMatcher::insertMatchingBrace(const QTextCursor &cursor,
const QString &text,
const QChar la,
int *skippedChars) const
{
if (text.length() != 1)
return QString();
if (!shouldInsertMatchingText(cursor))
return QString();
const QChar ch = text.at(0);
if (isQuote(ch)) {
if (la != ch)
return QString(ch);
++*skippedChars;
return QString();
}
if (isOpeningBrace(ch))
return QString(m_braceChars[ch]);
if (isDelimiter(ch) || isClosingBrace(ch)) {
if (la == ch)
++*skippedChars;
}
return QString();
}
/*!
* Returns true if given character was added as one of character types.
*/
bool BraceMatcher::isKnownChar(const QChar c) const
{
return isQuote(c) || isDelimiter(c) || isOpeningBrace(c) || isClosingBrace(c);
}
} // namespace Utils
/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2012 Konstantin Tokarev <annulen@yandex.ru>
**
** Contact: http://www.qt-project.org/
**
**
** GNU Lesser General Public License Usage
**
** 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.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** Other Usage
**
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**************************************************************************/
#ifndef BRACEMATCHER_H
#define BRACEMATCHER_H
#include "utils_global.h"
#include <QChar>
#include <QSet>
#include <QMap>
QT_BEGIN_NAMESPACE
class QString;
class QTextCursor;
QT_END_NAMESPACE
namespace Utils {
class QTCREATOR_UTILS_EXPORT BraceMatcher
{
public:
void addBraceCharPair(const QChar opening, const QChar closing);
void addQuoteChar(const QChar quote);
void addDelimiterChar(const QChar delim);
bool shouldInsertMatchingText(const QTextCursor &tc) const;
bool shouldInsertMatchingText(const QChar lookAhead) const;
QString insertMatchingBrace(const QTextCursor &tc, const QString &text,
const QChar la, int *skippedChars) const;
bool isOpeningBrace(const QChar c) const { return m_braceChars.contains(c); }
bool isClosingBrace(const QChar c) const { return m_braceChars.values().contains(c); }
bool isQuote(const QChar c) const { return m_quoteChars.contains(c); }
bool isDelimiter(const QChar c) const { return m_delimiterChars.contains(c); }
bool isKnownChar(const QChar c) const;
private:
QMap<QChar, QChar> m_braceChars;
QSet<QChar> m_quoteChars;
QSet<QChar> m_delimiterChars;
};
} // namespace Utils
#endif // BRACEMATCHER_H
......@@ -78,7 +78,8 @@ SOURCES += $$PWD/environment.cpp \
$$PWD/appmainwindow.cpp \
$$PWD/basetreeview.cpp \
$$PWD/qtcassert.cpp \
$$PWD/elfreader.cpp
$$PWD/elfreader.cpp \
$$PWD/bracematcher.cpp
win32 {
SOURCES += \
......@@ -163,7 +164,8 @@ HEADERS += \
$$PWD/tcpportsgatherer.h \
$$PWD/appmainwindow.h \
$$PWD/basetreeview.h \
$$PWD/elfreader.h
$$PWD/elfreader.h \
$$PWD/bracematcher.h
FORMS += $$PWD/filewizardpage.ui \
$$PWD/projectintropage.ui \
......
......@@ -40,6 +40,8 @@ QtcLibrary {
"basetreeview.h",
"basevalidatinglineedit.cpp",
"basevalidatinglineedit.h",
"bracematcher.cpp",
"bracematcher.h",
"buildablehelperlibrary.h",
"changeset.cpp",
"changeset.h",
......
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