CppEditor: Move ConvertToCamelCase quickfix to its own files

Change-Id: Ic45ad1732fbf1253088db1b8adb93d752ed7cd1c
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

7 files changed, 206 insertions, 147 deletions

diff --git a/src/plugins/cppeditor/CMakeLists.txt b/src/plugins/cppeditor/CMakeLists.txt
index bc7d6d150c..bdfe7b2283 100644
--- a/src/plugins/cppeditor/CMakeLists.txt
+++ b/src/plugins/cppeditor/CMakeLists.txt
@@ -101,6 +101,7 @@ add_qtc_plugin(CppEditor
     quickfixes/convertnumericliteral.cpp quickfixes/convertnumericliteral.h
     quickfixes/convertqt4connect.cpp quickfixes/convertqt4connect.h
     quickfixes/convertstringliteral.cpp quickfixes/convertstringliteral.h
+    quickfixes/converttocamelcase.cpp quickfixes/converttocamelcase.h
     quickfixes/converttometamethodcall.cpp quickfixes/converttometamethodcall.h
     quickfixes/cppcodegenerationquickfixes.cpp quickfixes/cppcodegenerationquickfixes.h
     quickfixes/cppinsertvirtualmethods.cpp quickfixes/cppinsertvirtualmethods.h
diff --git a/src/plugins/cppeditor/cppeditor.qbs b/src/plugins/cppeditor/cppeditor.qbs
index 9c0cd9ff3d..c02ed9b8e6 100644
--- a/src/plugins/cppeditor/cppeditor.qbs
+++ b/src/plugins/cppeditor/cppeditor.qbs
@@ -233,6 +233,8 @@ QtcPlugin {
             "convertqt4connect.h",
             "convertstringliteral.cpp",
             "convertstringliteral.h",
+            "converttocamelcase.cpp",
+            "converttocamelcase.h",
             "converttometamethodcall.cpp",
             "converttometamethodcall.h",
             "cppcodegenerationquickfixes.cpp",
diff --git a/src/plugins/cppeditor/quickfixes/converttocamelcase.cpp b/src/plugins/cppeditor/quickfixes/converttocamelcase.cpp
new file mode 100644
index 0000000000..5d79997297
--- /dev/null
+++ b/src/plugins/cppeditor/quickfixes/converttocamelcase.cpp
@@ -0,0 +1,191 @@
+// 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
diff --git a/src/plugins/cppeditor/quickfixes/converttocamelcase.h b/src/plugins/cppeditor/quickfixes/converttocamelcase.h
new file mode 100644
index 0000000000..2d7acb08f7
--- /dev/null
+++ b/src/plugins/cppeditor/quickfixes/converttocamelcase.h
@@ -0,0 +1,8 @@
+// Copyright (C) 2024 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#pragma once
+
+namespace CppEditor::Internal {
+void registerConvertToCamelCaseQuickfix();
+} // namespace CppEditor::Internal
diff --git a/src/plugins/cppeditor/quickfixes/cppquickfix_test.cpp b/src/plugins/cppeditor/quickfixes/cppquickfix_test.cpp
index 41df3b423a..efb2d7fa64 100644
--- a/src/plugins/cppeditor/quickfixes/cppquickfix_test.cpp
+++ b/src/plugins/cppeditor/quickfixes/cppquickfix_test.cpp
@@ -269,39 +269,6 @@ void QuickfixTest::testGeneric_data()
         << CppQuickFixFactoryPtr(new ReformatPointerDeclaration)
         << _("char@*s;")
         << _("char *s;");
-
-    QTest::newRow("convert to camel case: normal")
-        << CppQuickFixFactoryPtr(new ConvertToCamelCase(true))
-        << _("void @lower_case_function();\n")
-        << _("void lowerCaseFunction();\n");
-    QTest::newRow("convert to camel case: already camel case")
-        << CppQuickFixFactoryPtr(new ConvertToCamelCase(true))
-        << _("void @camelCaseFunction();\n")
-        << _();
-    QTest::newRow("convert to camel case: no underscores (lower case)")
-        << CppQuickFixFactoryPtr(new ConvertToCamelCase(true))
-        << _("void @lowercasefunction();\n")
-        << _();
-    QTest::newRow("convert to camel case: no underscores (upper case)")
-        << CppQuickFixFactoryPtr(new ConvertToCamelCase(true))
-        << _("void @UPPERCASEFUNCTION();\n")
-        << _();
-    QTest::newRow("convert to camel case: non-applicable underscore")
-        << CppQuickFixFactoryPtr(new ConvertToCamelCase(true))
-        << _("void @m_a_member;\n")
-        << _("void m_aMember;\n");
-    QTest::newRow("convert to camel case: upper case")
-        << CppQuickFixFactoryPtr(new ConvertToCamelCase(true))
-        << _("void @UPPER_CASE_FUNCTION();\n")
-        << _("void upperCaseFunction();\n");
-    QTest::newRow("convert to camel case: partially camel case already")
-        << CppQuickFixFactoryPtr(new ConvertToCamelCase(true))
-        << _("void mixed@_andCamelCase();\n")
-        << _("void mixedAndCamelCase();\n");
-    QTest::newRow("convert to camel case: wild mix")
-        << CppQuickFixFactoryPtr(new ConvertToCamelCase(true))
-        << _("void @WhAt_TODO_hErE();\n")
-        << _("void WhAtTODOHErE();\n");
 }
 
 void QuickfixTest::testGeneric()
diff --git a/src/plugins/cppeditor/quickfixes/cppquickfixes.cpp b/src/plugins/cppeditor/quickfixes/cppquickfixes.cpp
index 1432488ad9..46af51d38c 100644
--- a/src/plugins/cppeditor/quickfixes/cppquickfixes.cpp
+++ b/src/plugins/cppeditor/quickfixes/cppquickfixes.cpp
@@ -11,19 +11,19 @@
 #include "../cpppointerdeclarationformatter.h"
 #include "../cpprefactoringchanges.h"
 #include "../cpptoolsreuse.h"
-#include "../insertionpointlocator.h"
 #include "assigntolocalvariable.h"
 #include "bringidentifierintoscope.h"
 #include "completeswitchstatement.h"
 #include "convertfromandtopointer.h"
 #include "convertnumericliteral.h"
+#include "convertqt4connect.h"
+#include "convertstringliteral.h"
+#include "converttocamelcase.h"
 #include "converttometamethodcall.h"
 #include "cppcodegenerationquickfixes.h"
 #include "cppinsertvirtualmethods.h"
 #include "cppquickfixassistant.h"
 #include "cppquickfixhelpers.h"
-#include "convertqt4connect.h"
-#include "convertstringliteral.h"
 #include "createdeclarationfromuse.h"
 #include "extractfunction.h"
 #include "extractliteralasparameter.h"
@@ -91,9 +91,7 @@
 #include <QTextCursor>
 #include <QVBoxLayout>
 
-#include <bitset>
 #include <cctype>
-#include <limits>
 
 using namespace CPlusPlus;
 using namespace ProjectExplorer;
@@ -137,96 +135,6 @@ namespace 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"));
-    }
-
-    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);
-        }
-    }
-
-    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:
-    const QString m_name;
-    const AST * const m_nameAst;
-    const bool m_isAllUpper;
-    const bool m_test;
-};
-
-} // anonymous namespace
-
-void ConvertToCamelCase::doMatch(const CppQuickFixInterface &interface, QuickFixOperations &result)
-{
-    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;
-        }
-    }
-}
-
-namespace {
-
 class RearrangeParamDeclarationListOp: public CppQuickFixOperation
 {
 public:
@@ -476,8 +384,6 @@ void ExtraRefactoringOperations::doMatch(const CppQuickFixInterface &interface,
 
 void createCppQuickFixes()
 {
-    new ConvertToCamelCase;
-
     new RearrangeParamDeclarationList;
     new ReformatPointerDeclaration;
 
@@ -504,6 +410,7 @@ void createCppQuickFixes()
     registerConvertToMetaMethodCallQuickfix();
     registerSplitSimpleDeclarationQuickfix();
     registerConvertNumericLiteralQuickfix();
+    registerConvertToCamelCaseQuickfix();
 
     new ExtraRefactoringOperations;
 }
diff --git a/src/plugins/cppeditor/quickfixes/cppquickfixes.h b/src/plugins/cppeditor/quickfixes/cppquickfixes.h
index bb2312842e..c53c66bd84 100644
--- a/src/plugins/cppeditor/quickfixes/cppquickfixes.h
+++ b/src/plugins/cppeditor/quickfixes/cppquickfixes.h
@@ -29,23 +29,6 @@ public:
 };
 
 /*!
-  Turns "an_example_symbol" into "anExampleSymbol" and
-  "AN_EXAMPLE_SYMBOL" into "AnExampleSymbol".
-
-  Activates on: identifiers
-*/
-class ConvertToCamelCase : public CppQuickFixFactory
-{
-public:
-    ConvertToCamelCase(bool test = false) : CppQuickFixFactory(), m_test(test) {}
-
-    void doMatch(const CppQuickFixInterface &interface, QuickFixOperations &result) override;
-
-private:
-    const bool m_test;
-};
-
-/*!
   Switches places of the parameter declaration under cursor
   with the next or the previous one in the parameter declaration list