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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms and
** conditions see http://www.qt.io/terms-conditions. For further information
** use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
****************************************************************************/
#include "cppqtstyleindenter.h"
#include "cppcodeformatter.h"
#include "cpptoolssettings.h"
#include "cppcodestylepreferences.h"
#include <QChar>
#include <QTextDocument>
#include <QTextBlock>
#include <QTextCursor>
using namespace CppTools;
CppQtStyleIndenter::CppQtStyleIndenter()
: m_cppCodeStylePreferences(0)
{
// Just for safety. setCodeStylePreferences should be called when the editor the
// indenter belongs to gets initialized.
m_cppCodeStylePreferences = CppToolsSettings::instance()->cppCodeStyle();
}
CppQtStyleIndenter::~CppQtStyleIndenter()
{}
bool CppQtStyleIndenter::isElectricCharacter(const QChar &ch) const
{
switch (ch.toLatin1()) {
case '{':
case '}':
case ':':
case '#':
case '<':
case '>':
case ';':
return true;
}
return false;
}
static bool isElectricInLine(const QChar ch, const QString &text)
{
switch (ch.toLatin1()) {
case ';':
return text.contains(QLatin1String("break"));
case ':':
// switch cases and access declarations should be reindented
if (text.contains(QLatin1String("case"))
|| text.contains(QLatin1String("default"))
|| text.contains(QLatin1String("public"))
|| text.contains(QLatin1String("private"))
|| text.contains(QLatin1String("protected"))
|| text.contains(QLatin1String("signals"))
|| text.contains(QLatin1String("Q_SIGNALS"))) {
return true;
}
// fall-through
// lines that start with : might have a constructor initializer list
case '<':
case '>': {
// Electric if at line beginning (after space indentation)
for (int i = 0, len = text.count(); i < len; ++i) {
if (!text.at(i).isSpace())
return text.at(i) == ch;
}
return false;
}
}
return true;
}
void CppQtStyleIndenter::indentBlock(QTextDocument *doc,
const QTextBlock &block,
const QChar &typedChar,
const TextEditor::TabSettings &tabSettings)
{
Q_UNUSED(doc)
QtStyleCodeFormatter codeFormatter(tabSettings, codeStyleSettings());
codeFormatter.updateStateUntil(block);
int indent;
int padding;
codeFormatter.indentFor(block, &indent, &padding);
if (isElectricCharacter(typedChar)) {
// : should not be electric for labels
if (!isElectricInLine(typedChar, block.text()))
return;
// only reindent the current line when typing electric characters if the
// indent is the same it would be if the line were empty
int newlineIndent;
int newlinePadding;
codeFormatter.indentForNewLineAfter(block.previous(), &newlineIndent, &newlinePadding);
if (tabSettings.indentationColumn(block.text()) != newlineIndent + newlinePadding)
return;
}
tabSettings.indentLine(block, indent + padding, padding);
}
void CppQtStyleIndenter::indent(QTextDocument *doc,
const QTextCursor &cursor,
const QChar &typedChar,
const TextEditor::TabSettings &tabSettings)
{
if (cursor.hasSelection()) {
QTextBlock block = doc->findBlock(cursor.selectionStart());
const QTextBlock end = doc->findBlock(cursor.selectionEnd()).next();
QtStyleCodeFormatter codeFormatter(tabSettings, codeStyleSettings());
codeFormatter.updateStateUntil(block);
QTextCursor tc = cursor;
tc.beginEditBlock();
do {
int indent;
int padding;
codeFormatter.indentFor(block, &indent, &padding);
tabSettings.indentLine(block, indent + padding, padding);
codeFormatter.updateLineStateChange(block);
block = block.next();
} while (block.isValid() && block != end);
tc.endEditBlock();
} else {
indentBlock(doc, cursor.block(), typedChar, tabSettings);
}
}
void CppQtStyleIndenter::setCodeStylePreferences(TextEditor::ICodeStylePreferences *preferences)
{
CppCodeStylePreferences *cppCodeStylePreferences
= qobject_cast<CppCodeStylePreferences *>(preferences);
if (cppCodeStylePreferences)
m_cppCodeStylePreferences = cppCodeStylePreferences;
}
void CppQtStyleIndenter::invalidateCache(QTextDocument *doc)
{
QtStyleCodeFormatter formatter;
formatter.invalidateCache(doc);
}
CppCodeStyleSettings CppQtStyleIndenter::codeStyleSettings() const
{
if (m_cppCodeStylePreferences)
return m_cppCodeStylePreferences->currentCodeStyleSettings();
return CppCodeStyleSettings();
}
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