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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 "splitsimpledeclaration.h"
#include "../cppeditortr.h"
#include "../cpprefactoringchanges.h"
#include "cppquickfix.h"
using namespace CPlusPlus;
using namespace Utils;
namespace CppEditor::Internal {
namespace {
static bool checkDeclarationForSplit(SimpleDeclarationAST *declaration)
{
if (!declaration->semicolon_token)
return false;
if (!declaration->decl_specifier_list)
return false;
for (SpecifierListAST *it = declaration->decl_specifier_list; it; it = it->next) {
SpecifierAST *specifier = it->value;
if (specifier->asEnumSpecifier() || specifier->asClassSpecifier())
return false;
}
return declaration->declarator_list && declaration->declarator_list->next;
}
class SplitSimpleDeclarationOp : public CppQuickFixOperation
{
public:
SplitSimpleDeclarationOp(const CppQuickFixInterface &interface, int priority,
SimpleDeclarationAST *decl)
: CppQuickFixOperation(interface, priority)
, declaration(decl)
{
setDescription(Tr::tr("Split Declaration"));
}
void perform() override
{
CppRefactoringChanges refactoring(snapshot());
CppRefactoringFilePtr currentFile = refactoring.cppFile(filePath());
ChangeSet changes;
SpecifierListAST *specifiers = declaration->decl_specifier_list;
int declSpecifiersStart = currentFile->startOf(specifiers->firstToken());
int declSpecifiersEnd = currentFile->endOf(specifiers->lastToken() - 1);
int insertPos = currentFile->endOf(declaration->semicolon_token);
DeclaratorAST *prevDeclarator = declaration->declarator_list->value;
for (DeclaratorListAST *it = declaration->declarator_list->next; it; it = it->next) {
DeclaratorAST *declarator = it->value;
changes.insert(insertPos, QLatin1String("\n"));
changes.copy(declSpecifiersStart, declSpecifiersEnd, insertPos);
changes.insert(insertPos, QLatin1String(" "));
changes.move(currentFile->range(declarator), insertPos);
changes.insert(insertPos, QLatin1String(";"));
const int prevDeclEnd = currentFile->endOf(prevDeclarator);
changes.remove(prevDeclEnd, currentFile->startOf(declarator));
prevDeclarator = declarator;
}
currentFile->setChangeSet(changes);
currentFile->apply();
}
private:
SimpleDeclarationAST *declaration;
};
/*!
Rewrite
int *a, b;
As
int *a;
int b;
Activates on: the type or the variable names.
*/
class SplitSimpleDeclaration : public CppQuickFixFactory
{
#ifdef WITH_TESTS
public:
static QObject *createTest() { return new QObject; }
#endif
private:
void doMatch(const CppQuickFixInterface &interface, QuickFixOperations &result) override
{
CoreDeclaratorAST *core_declarator = nullptr;
const QList<AST *> &path = interface.path();
CppRefactoringFilePtr file = interface.currentFile();
const int cursorPosition = file->cursor().selectionStart();
for (int index = path.size() - 1; index != -1; --index) {
AST *node = path.at(index);
if (CoreDeclaratorAST *coreDecl = node->asCoreDeclarator()) {
core_declarator = coreDecl;
} else if (SimpleDeclarationAST *simpleDecl = node->asSimpleDeclaration()) {
if (checkDeclarationForSplit(simpleDecl)) {
SimpleDeclarationAST *declaration = simpleDecl;
const int startOfDeclSpecifier = file->startOf(declaration->decl_specifier_list->firstToken());
const int endOfDeclSpecifier = file->endOf(declaration->decl_specifier_list->lastToken() - 1);
if (cursorPosition >= startOfDeclSpecifier && cursorPosition <= endOfDeclSpecifier) {
// the AST node under cursor is a specifier.
result << new SplitSimpleDeclarationOp(interface, index, declaration);
return;
}
if (core_declarator && interface.isCursorOn(core_declarator)) {
// got a core-declarator under the text cursor.
result << new SplitSimpleDeclarationOp(interface, index, declaration);
return;
}
}
return;
}
}
}
};
} // namespace
void registerSplitSimpleDeclarationQuickfix()
{
CppQuickFixFactory::registerFactory<SplitSimpleDeclaration>();
}
} // namespace CppEditor::Internal
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