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// Copyright (C) 2024 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "converttocamelcase.h"
#include "../cppeditortr.h"
#include "../cppeditorwidget.h"
#include "../cpprefactoringchanges.h"
#include "cppquickfix.h"
#ifdef WITH_TESTS
#include "cppquickfix_test.h"
#include <QtTest>
#endif
using namespace CPlusPlus;
using namespace Utils;
namespace CppEditor::Internal {
namespace {
class ConvertToCamelCaseOp: public CppQuickFixOperation
{
public:
ConvertToCamelCaseOp(const CppQuickFixInterface &interface, const QString &name,
const AST *nameAst, bool test)
: CppQuickFixOperation(interface, -1)
, m_name(name)
, m_nameAst(nameAst)
, m_isAllUpper(name.isUpper())
, m_test(test)
{
setDescription(Tr::tr("Convert to Camel Case"));
}
static bool isConvertibleUnderscore(const QString &name, int pos)
{
return name.at(pos) == QLatin1Char('_') && name.at(pos+1).isLetter()
&& !(pos == 1 && name.at(0) == QLatin1Char('m'));
}
private:
void perform() override
{
CppRefactoringChanges refactoring(snapshot());
CppRefactoringFilePtr currentFile = refactoring.cppFile(filePath());
QString newName = m_isAllUpper ? m_name.toLower() : m_name;
for (int i = 1; i < newName.length(); ++i) {
const QChar c = newName.at(i);
if (c.isUpper() && m_isAllUpper) {
newName[i] = c.toLower();
} else if (i < newName.length() - 1 && isConvertibleUnderscore(newName, i)) {
newName.remove(i, 1);
newName[i] = newName.at(i).toUpper();
}
}
if (m_test) {
ChangeSet changeSet;
changeSet.replace(currentFile->range(m_nameAst), newName);
currentFile->setChangeSet(changeSet);
currentFile->apply();
} else {
editor()->renameUsages(newName);
}
}
const QString m_name;
const AST * const m_nameAst;
const bool m_isAllUpper;
const bool m_test;
};
/*!
Turns "an_example_symbol" into "anExampleSymbol" and
"AN_EXAMPLE_SYMBOL" into "AnExampleSymbol".
Activates on: identifiers
*/
class ConvertToCamelCase : public CppQuickFixFactory
{
public:
ConvertToCamelCase(bool test = false) : m_test(test) {}
#ifdef WITH_TESTS
static QObject *createTest();
#endif
private:
void doMatch(const CppQuickFixInterface &interface, QuickFixOperations &result) override
{
const QList<AST *> &path = interface.path();
if (path.isEmpty())
return;
AST * const ast = path.last();
const Name *name = nullptr;
const AST *astForName = nullptr;
if (const NameAST * const nameAst = ast->asName()) {
if (nameAst->name && nameAst->name->asNameId()) {
astForName = nameAst;
name = nameAst->name;
}
} else if (const NamespaceAST * const namespaceAst = ast->asNamespace()) {
astForName = namespaceAst;
name = namespaceAst->symbol->name();
}
if (!name)
return;
QString nameString = QString::fromUtf8(name->identifier()->chars());
if (nameString.length() < 3)
return;
for (int i = 1; i < nameString.length() - 1; ++i) {
if (ConvertToCamelCaseOp::isConvertibleUnderscore(nameString, i)) {
result << new ConvertToCamelCaseOp(interface, nameString, astForName, m_test);
return;
}
}
}
const bool m_test;
};
#ifdef WITH_TESTS
using namespace Tests;
class ConvertToCamelCaseTest : public QObject
{
Q_OBJECT
private slots:
void test_data()
{
QTest::addColumn<QByteArray>("original");
QTest::addColumn<QByteArray>("expected");
using QByteArray = QByteArray;
QTest::newRow("convert to camel case: normal")
<< QByteArray("void @lower_case_function();\n")
<< QByteArray("void lowerCaseFunction();\n");
QTest::newRow("convert to camel case: already camel case")
<< QByteArray("void @camelCaseFunction();\n")
<< QByteArray();
QTest::newRow("convert to camel case: no underscores (lower case)")
<< QByteArray("void @lowercasefunction();\n")
<< QByteArray();
QTest::newRow("convert to camel case: no underscores (upper case)")
<< QByteArray("void @UPPERCASEFUNCTION();\n")
<< QByteArray();
QTest::newRow("convert to camel case: non-applicable underscore")
<< QByteArray("void @m_a_member;\n")
<< QByteArray("void m_aMember;\n");
QTest::newRow("convert to camel case: upper case")
<< QByteArray("void @UPPER_CASE_FUNCTION();\n")
<< QByteArray("void upperCaseFunction();\n");
QTest::newRow("convert to camel case: partially camel case already")
<< QByteArray("void mixed@_andCamelCase();\n")
<< QByteArray("void mixedAndCamelCase();\n");
QTest::newRow("convert to camel case: wild mix")
<< QByteArray("void @WhAt_TODO_hErE();\n")
<< QByteArray("void WhAtTODOHErE();\n");
}
void test()
{
QFETCH(QByteArray, original);
QFETCH(QByteArray, expected);
ConvertToCamelCase factory(true);
QuickFixOperationTest(singleDocument(original, expected), &factory);
}
};
QObject *ConvertToCamelCase::createTest() { return new ConvertToCamelCaseTest; }
#endif // WITH_TESTS
} // namespace
void registerConvertToCamelCaseQuickfix()
{
CppQuickFixFactory::registerFactory<ConvertToCamelCase>();
}
} // namespace CppEditor::Internal
#ifdef WITH_TESTS
#include <converttocamelcase.moc>
#endif
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