qt-creator/src/plugins/cppeditor/cppquickfixes.h

/****************************************************************************
**
** 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.
**
****************************************************************************/

#ifndef CPPQUICKFIXES_H
#define CPPQUICKFIXES_H

#include "cppeditor_global.h"
#include "cppquickfix.h"

#include <cpptools/cpprefactoringchanges.h>
#include <extensionsystem/iplugin.h>

#include <QDialog>

#include <functional>

QT_BEGIN_NAMESPACE
class QByteArray;
template <class> class QList;
QT_END_NAMESPACE

using namespace CppTools;
using namespace CPlusPlus;
using namespace TextEditor;

///
/// Adding New Quick Fixes
///
/// When adding new Quick Fixes, make sure that the match() function is "cheap".
/// Otherwise, since the match() functions are also called to generate context menu
/// entries, the user might experience a delay opening the context menu.
///

namespace CppEditor {
namespace Internal {

void registerQuickFixes(ExtensionSystem::IPlugin *plugIn);

class ExtraRefactoringOperations : public CppQuickFixFactory
{
public:
    void match(const CppQuickFixInterface &interface, QuickFixOperations &result) override;
};

/*!
  Adds an include for an undefined identifier or only forward declared identifier.

  Activates on: the undefined identifier
*/
class AddIncludeForUndefinedIdentifier : public CppQuickFixFactory
{
public:
    void match(const CppQuickFixInterface &interface, QuickFixOperations &result);
};

// Exposed for tests
class AddIncludeForUndefinedIdentifierOp: public CppQuickFixOperation
{
public:
    AddIncludeForUndefinedIdentifierOp(const CppQuickFixInterface &interface, int priority,
                                       const QString &include);
    void perform();

private:
    QString m_include;
};

/*!
  Rewrite
    a op b

  As
    b flipop a

  Activates on: <= < > >= == != && ||
*/
class FlipLogicalOperands: public CppQuickFixFactory
{
public:
    void match(const CppQuickFixInterface &interface, QuickFixOperations &result);
};

/*!
  Rewrite
    a op b -> !(a invop b)
    (a op b) -> !(a invop b)
    !(a op b) -> (a invob b)

  Activates on: <= < > >= == !=
*/
class InverseLogicalComparison: public CppQuickFixFactory
{
public:
    void match(const CppQuickFixInterface &interface, QuickFixOperations &result);
};

/*!
  Rewrite
    !a && !b

  As
    !(a || b)

  Activates on: &&
*/
class RewriteLogicalAnd: public CppQuickFixFactory
{
public:
    void match(const CppQuickFixInterface &interface, QuickFixOperations &result);

private:
    ASTMatcher matcher;
};

/*!
  Replace
     "abcd"
     QLatin1String("abcd")
     QLatin1Literal("abcd")

  With
     @"abcd"

  Activates on: the string literal, if the file type is a Objective-C(++) file.
*/
class ConvertCStringToNSString: public CppQuickFixFactory
{
public:
    void match(const CppQuickFixInterface &interface, QuickFixOperations &result);
};

/*!
  Base class for converting numeric literals between decimal, octal and hex.
  Does the base check for the specific ones and parses the number.

  Test cases:
    0xFA0Bu;
    0X856A;
    298.3;
    199;
    074;
    199L;
    074L;
    -199;
    -017;
    0783; // invalid octal
    0; // border case, allow only hex<->decimal

  Activates on: numeric literals
*/
class ConvertNumericLiteral: public CppQuickFixFactory
{
public:
    void match(const CppQuickFixInterface &interface, QuickFixOperations &result);
};

/*!
  Replace
    "abcd"

  With
    tr("abcd") or
    QCoreApplication::translate("CONTEXT", "abcd") or
    QT_TRANSLATE_NOOP("GLOBAL", "abcd")

  depending on what is available.

  Activates on: the string literal
*/
class TranslateStringLiteral: public CppQuickFixFactory
{
public:
    void match(const CppQuickFixInterface &interface, QuickFixOperations &result);
};

/*!
  Replace
    "abcd"  -> QLatin1String("abcd")
    @"abcd" -> QLatin1String("abcd") (Objective C)
    'a'     -> QLatin1Char('a')
    'a'     -> "a"
    "a"     -> 'a' or QLatin1Char('a') (Single character string constants)
    "\n"    -> '\n', QLatin1Char('\n')

  Except if they are already enclosed in
    QLatin1Char, QT_TRANSLATE_NOOP, tr,
    trUtf8, QLatin1Literal, QLatin1String

  Activates on: the string or character literal
*/

class WrapStringLiteral: public CppQuickFixFactory
{
public:
    enum ActionFlags {
        EncloseInQLatin1CharAction = 0x1,
        EncloseInQLatin1StringAction = 0x2,
        EncloseInQStringLiteralAction = 0x4,
        EncloseActionMask = EncloseInQLatin1CharAction
            | EncloseInQLatin1StringAction | EncloseInQStringLiteralAction,
        TranslateTrAction = 0x8,
        TranslateQCoreApplicationAction = 0x10,
        TranslateNoopAction = 0x20,
        TranslationMask = TranslateTrAction
            | TranslateQCoreApplicationAction | TranslateNoopAction,
        RemoveObjectiveCAction = 0x40,
        ConvertEscapeSequencesToCharAction = 0x100,
        ConvertEscapeSequencesToStringAction = 0x200,
        SingleQuoteAction = 0x400,
        DoubleQuoteAction = 0x800
    };

    enum Type { TypeString, TypeObjCString, TypeChar, TypeNone };

    void match(const CppQuickFixInterface &interface, QuickFixOperations &result);

    static QString replacement(unsigned actions);
    static QByteArray stringToCharEscapeSequences(const QByteArray &content);
    static QByteArray charToStringEscapeSequences(const QByteArray &content);

    static ExpressionAST *analyze(const QList<AST *> &path, const CppRefactoringFilePtr &file,
                                  Type *type,
                                  QByteArray *enclosingFunction = 0,
                                  CallAST **enclosingFunctionCall = 0);

private:
    static QString msgQtStringLiteralDescription(const QString &replacement, int qtVersion);
    static QString msgQtStringLiteralDescription(const QString &replacement);
};

/*!
  Turns "an_example_symbol" into "anExampleSymbol" and
  "AN_EXAMPLE_SYMBOL" into "AnExampleSymbol".

  Activates on: identifiers
*/
class ConvertToCamelCase : public CppQuickFixFactory
{
public:
    void match(const CppQuickFixInterface &interface, QuickFixOperations &result);
};

/*!
  Replace
    if (Type name = foo()) {...}

  With
    Type name = foo();
    if (name) {...}

  Activates on: the name of the introduced variable
*/
class MoveDeclarationOutOfIf: public CppQuickFixFactory
{
public:
    void match(const CppQuickFixInterface &interface, QuickFixOperations &result);
};

/*!
  Replace
    while (Type name = foo()) {...}

  With
    Type name;
    while ((name = foo()) != 0) {...}

  Activates on: the name of the introduced variable
*/
class MoveDeclarationOutOfWhile: public CppQuickFixFactory
{
public:
    void match(const CppQuickFixInterface &interface, QuickFixOperations &result);
};

/*!
  Replace
     if (something && something_else) {
     }

  with
     if (something)
        if (something_else) {
        }
     }

  and
    if (something || something_else)
      x;

  with
    if (something)
      x;
    else if (something_else)
      x;

    Activates on: && or ||
*/
class SplitIfStatement: public CppQuickFixFactory
{
public:
    void match(const CppQuickFixInterface &interface, QuickFixOperations &result);
};

/*!
  Rewrite
    int *a, b;

  As
    int *a;
    int b;

  Activates on: the type or the variable names.
*/
class SplitSimpleDeclaration: public CppQuickFixFactory
{
public:
    void match(const CppQuickFixInterface &interface, QuickFixOperations &result);

private:
    static bool checkDeclaration(SimpleDeclarationAST *declaration);
};

/*!
  Rewrites
    a = foo();

  As
    Type a = foo();

  Where Type is the return type of foo()

  Activates on: the assignee, if the type of the right-hand side of the assignment is known.
*/
class AddLocalDeclaration: public CppQuickFixFactory
{
public:
    void match(const CppQuickFixInterface &interface, QuickFixOperations &result);
};

/*!
  Add curly braces to a if statement that doesn't already contain a
  compound statement. I.e.

  if (a)
      b;
  becomes
  if (a) {
      b;
  }

  Activates on: the if
*/
class AddBracesToIf: public CppQuickFixFactory
{
public:
    void match(const CppQuickFixInterface &interface, QuickFixOperations &result);
};

/*!
  Switches places of the parameter declaration under cursor
  with the next or the previous one in the parameter declaration list

  Activates on: parameter declarations
*/
class RearrangeParamDeclarationList : public CppQuickFixFactory
{
public:
    void match(const CppQuickFixInterface &interface, QuickFixOperations &result);
};

/*!
  Reformats a pointer, reference or rvalue reference type/declaration.

  Works also with selections (except when the cursor is not on any AST).

  Activates on: simple declarations, parameters and return types of function
                declarations and definitions, control flow statements (if,
                while, for, foreach) with declarations.
*/
class ReformatPointerDeclaration : public CppQuickFixFactory
{
public:
    void match(const CppQuickFixInterface &interface, QuickFixOperations &result);
};

/*!
  Adds missing case statements for "switch (enumVariable)"
 */
class CompleteSwitchCaseStatement: public CppQuickFixFactory
{
public:
    void match(const CppQuickFixInterface &interface, QuickFixOperations &result);
};

/*!
  Adds a declarations to a definition
 */
class InsertDeclFromDef: public CppQuickFixFactory
{
public:
    void match(const CppQuickFixInterface &interface, TextEditor::QuickFixOperations &result);
};

/*!
  Adds a definition for a declaration.
 */
class InsertDefFromDecl: public CppQuickFixFactory
{
public:
    void match(const CppQuickFixInterface &interface, TextEditor::QuickFixOperations &result);
};

/*!
  Extracts the selected code and puts it to a function
 */
class ExtractFunction : public CppQuickFixFactory
{
public:
    typedef std::function<QString ()> FunctionNameGetter;

    ExtractFunction(FunctionNameGetter functionNameGetter = FunctionNameGetter());
    void match(const CppQuickFixInterface &interface, TextEditor::QuickFixOperations &result);

private:
    FunctionNameGetter m_functionNameGetter; // For tests to avoid GUI pop-up.
};

/*!
  Extracts the selected constant and converts it to a parameter of the current function.

  Activates on numeric, bool, character, or string literal in the function body.
 */
class ExtractLiteralAsParameter : public CppQuickFixFactory
{
public:
    void match(const CppQuickFixInterface &interface, TextEditor::QuickFixOperations &result);
};

/*!
  Converts the selected variable to a pointer if it is a stack variable or reference, or vice versa.

  Activates on variable declarations.
 */
class ConvertFromAndToPointer : public CppQuickFixFactory
{
public:
    void match(const CppQuickFixInterface &interface, TextEditor::QuickFixOperations &result);
};

/*!
  Adds getter and setter functions for a member variable
 */
class GenerateGetterSetter : public CppQuickFixFactory
{
public:
    void match(const CppQuickFixInterface &interface, TextEditor::QuickFixOperations &result);
};

/*!
  Adds missing members for a Q_PROPERTY
 */
class InsertQtPropertyMembers : public CppQuickFixFactory
{
public:
    void match(const CppQuickFixInterface &interface, TextEditor::QuickFixOperations &result);
};

/*!
  Converts a Qt 4 QObject::connect() to Qt 5 style.
 */
class ConvertQt4Connect : public CppQuickFixFactory
{
public:
    void match(const CppQuickFixInterface &interface, TextEditor::QuickFixOperations &result);
};

/*!
 Applies function signature changes
 */
class ApplyDeclDefLinkChanges: public CppQuickFixFactory
{
public:
    void match(const CppQuickFixInterface &interface, TextEditor::QuickFixOperations &result);
};

/*!
 Moves the definition of a member function outside the class or moves the definition of a member
 function or a normal function to the implementation file.
 */
class MoveFuncDefOutside: public CppQuickFixFactory
{
public:
    void match(const CppQuickFixInterface &interface, TextEditor::QuickFixOperations &result);
};

/*!
 Moves all member function definitions outside the class or to the implementation file.
 */
class MoveAllFuncDefOutside: public CppQuickFixFactory
{
public:
    void match(const CppQuickFixInterface &interface, TextEditor::QuickFixOperations &result);
};

/*!
 Moves the definition of a function to its declaration.
 */
class MoveFuncDefToDecl: public CppQuickFixFactory
{
public:
    void match(const CppQuickFixInterface &interface, TextEditor::QuickFixOperations &result);
};

/*!
  Assigns the return value of a function call or a new expression to a local variable
 */
class AssignToLocalVariable : public CppQuickFixFactory
{
public:
    void match(const CppQuickFixInterface &interface, TextEditor::QuickFixOperations &result);
};

/*!
  Optimizes a for loop to avoid permanent condition check and forces to use preincrement
  or predecrement operators in the expression of the for loop.
 */
class OptimizeForLoop : public CppQuickFixFactory
{
public:
    void match(const CppQuickFixInterface &interface, TextEditor::QuickFixOperations &result);
};

/*!
  Escapes or unescapes a string literal as UTF-8.

  Escapes non-ASCII characters in a string literal to hexadecimal escape sequences.
  Unescapes octal or hexadecimal escape sequences in a string literal.
  String literals are handled as UTF-8 even if file's encoding is not UTF-8.
 */
class EscapeStringLiteral : public CppQuickFixFactory
{
public:
    void match(const CppQuickFixInterface &interface, TextEditor::QuickFixOperations &result);
};

} // namespace Internal
} // namespace CppEditor

#endif // CPPQUICKFIXES_H