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/*
SPDX-FileCopyrightText: 2014 Denis Steckelmacher <steckdenis@yahoo.fr>
SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
*/
#include "completionitem.h"
#include "context.h"
#include <language/codecompletion/codecompletionmodel.h>
#include <language/duchain/declaration.h>
#include <language/duchain/functiondeclaration.h>
#include <language/duchain/classdeclaration.h>
#include <language/duchain/classfunctiondeclaration.h>
#include <language/duchain/duchainlock.h>
#include <language/duchain/types/abstracttype.h>
#include <language/duchain/types/structuretype.h>
#include "../../duchain/functiontype.h"
#include <KTextEditor/Document>
#include <KTextEditor/View>
using namespace QmlJS;
using namespace KDevelop;
CompletionItem::CompletionItem(const DeclarationPointer& decl, int inheritanceDepth, Decoration decoration)
: NormalDeclarationCompletionItem(decl, QExplicitlySharedDataPointer<KDevelop::CodeCompletionContext>(), inheritanceDepth),
m_decoration(decoration)
{
}
QVariant CompletionItem::data(const QModelIndex& index, int role, const CodeCompletionModel* model) const
{
DUChainReadLocker lock;
Declaration* decl = declaration().data();
if (!decl) {
return QVariant();
}
auto* classDecl = dynamic_cast<ClassDeclaration *>(decl);
auto declType = decl->abstractType().dynamicCast<StructureType>();
auto funcType = decl->abstractType().dynamicCast<QmlJS::FunctionType>();
if (role == CodeCompletionModel::BestMatchesCount) {
return 5;
} else if (role == CodeCompletionModel::MatchQuality) {
AbstractType::Ptr referenceType =
static_cast<QmlJS::CodeCompletionContext*>(model->completionContext().data())->typeToMatch();
if (!referenceType) {
return QVariant();
}
AbstractType::Ptr declType = decl->abstractType();
if (!declType) {
return QVariant();
}
auto declFunc = declType.dynamicCast<QmlJS::FunctionType>();
if (declType->equals(referenceType.constData())) {
// Perfect type match
return QVariant(10);
} else if (declFunc && declFunc->returnType() &&
declFunc->returnType()->equals(referenceType.constData())) {
// Also very nice: a function returning the proper type
return QVariant(9);
} else {
// Completely different types, no luck
return QVariant();
}
} else if (role == Qt::DisplayRole && funcType) {
// Functions are displayed using the "type funcName(arg, arg, arg...)" format
Declaration* funcDecl = funcType->declaration(decl->topContext());
if (funcDecl) {
switch (index.column()) {
case CodeCompletionModel::Prefix:
return funcType->returnType()->toString();
case CodeCompletionModel::Name:
// Return the identifier of the declaration being listed, not of its
// function declaration (because the function may have been declared
// anonymously, even if it has been assigned to a variable)
return decl->identifier().toString();
case CodeCompletionModel::Arguments:
{
QStringList args;
const auto localDeclarations = funcDecl->internalContext()->localDeclarations();
args.reserve(localDeclarations.size());
for (auto* arg : localDeclarations) {
args.append(arg->toString());
}
return QVariant(QLatin1Char('(') + args.join(QLatin1String(", ")) +QLatin1Char(')'));
}
}
}
} else if (role == Qt::DisplayRole && index.column() == CodeCompletionModel::Prefix) {
if (classDecl) {
if (classDecl->classType() == ClassDeclarationData::Class) {
// QML component
return QStringLiteral("component");
} else if (classDecl->classType() == ClassDeclarationData::Interface) {
// C++-ish QML component
return QStringLiteral("wrapper");
}
}
if (decl && (
decl->kind() == Declaration::NamespaceAlias ||
decl->kind() == Declaration::Namespace
)) {
// Display namespaces and namespace aliases as modules
return QStringLiteral("module");
}
if (decl && decl->abstractType() &&
decl->kind() == Declaration::Type &&
decl->abstractType()->whichType() == AbstractType::TypeEnumeration) {
// Enum
return QStringLiteral("enum");
}
if (declType &&
decl->kind() == Declaration::Instance &&
declType->declarationId().qualifiedIdentifier().isEmpty()) {
// QML component instance. The type that should be displayed is the
// base class of its anonymous class
auto* anonymousClass = dynamic_cast<ClassDeclaration *>(declType->declaration(decl->topContext()));
if (anonymousClass && anonymousClass->baseClassesSize() > 0) {
return anonymousClass->baseClasses()[0].baseClass.abstractType()->toString();
}
}
}
return NormalDeclarationCompletionItem::data(index, role, model);
}
QString CompletionItem::declarationName() const
{
ClassFunctionDeclaration* classFuncDecl = dynamic_cast<ClassFunctionDeclaration *>(declaration().data());
if (classFuncDecl && classFuncDecl->isSignal() && m_decoration == QmlJS::CompletionItem::ColonOrBracket) {
// Signals, when completed in a QML component context, are transformed into slots
QString signal = classFuncDecl->identifier().toString();
if (signal.size() > 0) {
return QLatin1String("on") + signal.at(0).toUpper() + signal.midRef(1);
}
}
return NormalDeclarationCompletionItem::declarationName();
}
CodeCompletionModel::CompletionProperties CompletionItem::completionProperties() const
{
DUChainReadLocker lock;
// Variables having a function type should have a function icon. FunctionDeclarations
// are skipped here because they are already handled properly by completionProperties()
if (declaration() && declaration()->abstractType() &&
!declaration()->isFunctionDeclaration() &&
declaration()->abstractType()->whichType() == AbstractType::TypeFunction) {
return CodeCompletionModel::Function;
}
// Put declarations in a context owned by a namespace in the namespace scope
auto properties = NormalDeclarationCompletionItem::completionProperties();
if (declaration() && declaration()->context() && declaration()->context()->owner() && (
declaration()->context()->owner()->kind() == Declaration::Namespace ||
declaration()->context()->type() == DUContext::Enum
)) {
properties &= ~(CodeCompletionModel::LocalScope | CodeCompletionModel::GlobalScope | CodeCompletionModel::Public);
properties |= CodeCompletionModel::NamespaceScope;
}
return properties;
}
void CompletionItem::execute(KTextEditor::View* view, const KTextEditor::Range& word)
{
KTextEditor::Document* document = view->document();
QString base = declarationName();
switch (m_decoration)
{
case QmlJS::CompletionItem::NoDecoration:
document->replaceText(word, base);
break;
case QmlJS::CompletionItem::Quotes:
document->replaceText(word, QLatin1Char('\"') + base + QLatin1Char('\"'));
break;
case QmlJS::CompletionItem::QuotesAndBracket:
document->replaceText(word, QLatin1Char('\"') + base + QLatin1String("\"]"));
break;
case QmlJS::CompletionItem::ColonOrBracket:
if (declaration() && declaration()->abstractType() &&
declaration()->abstractType()->whichType() == AbstractType::TypeStructure) {
document->replaceText(word, base + QLatin1String(" {}"));
} else {
document->replaceText(word, base + QLatin1String(": "));
}
break;
case QmlJS::CompletionItem::Brackets:
document->replaceText(word, base + QLatin1String("()"));
}
}
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