qqmljslintercodegen.cpp

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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
// Qt-Security score:significant
 
#include "qqmljslintercodegen_p.h"
#include "qqmljslintertypepropagator_p.h"
 
#include <private/qqmljsbasicblocks_p.h>
#include <private/qqmljsfunctioninitializer_p.h>
#include <private/qqmljsimportvisitor_p.h>
#include <private/qqmljsshadowcheck_p.h>
#include <private/qqmljsstoragegeneralizer_p.h>
#include <private/qqmljsstorageinitializer_p.h>
 
#include <QFileInfo>
 
QT_BEGIN_NAMESPACE
 
using namespace Qt::StringLiterals;
 
bool operator==(const IdMemberShadow &lhs, const IdMemberShadow &rhs)
{
    return lhs.name == rhs.name && lhs.idScope == rhs.idScope
            && lhs.memberOwnerScope == rhs.memberOwnerScope;
}
bool operator!=(const IdMemberShadow &lhs, const IdMemberShadow &rhs)
{
    return !(lhs == rhs);
}
size_t qHash(const IdMemberShadow &idShadowsMember, size_t seed)
{
    return qHashMulti(seed, idShadowsMember.name, idShadowsMember.idScope,
                      idShadowsMember.memberOwnerScope);
}
QQmlJSLinterCodegen::QQmlJSLinterCodegen(QQmlJSImporter *importer, const QString &fileName,
                                         const QStringList &qmldirFiles, QQmlJSLogger *logger,
                                         const QQmlJS::LinterContext &context)
    : QQmlJSAotCompiler(importer, fileName, qmldirFiles, logger), m_context(context)
{
    m_flags |= QQmlJSAotCompiler::IsLintCompiler;
}
 
void QQmlJSLinterCodegen::setDocument(const QmlIR::JSCodeGen *codegen,
                                      const QmlIR::Document *document)
{
    Q_UNUSED(codegen);
    m_document = document;
    m_unitGenerator = &document->jsGenerator;
}
 
std::variant<QQmlJSAotFunction, QList<QQmlJS::DiagnosticMessage>>
QQmlJSLinterCodegen::compileBinding(const QV4::Compiler::Context *context,
                                    const QmlIR::Binding &irBinding, QQmlJS::AST::Node *astNode)
{
    const QString name = m_document->stringAt(irBinding.propertyNameIndex);
    m_logger->setCompileErrorPrefix(
            u"Could not determine signature of binding for %1: "_s.arg(name));
 
    QQmlJSFunctionInitializer initializer(
                &m_typeResolver, m_currentObject->location, m_currentScope->location, m_logger);
    QQmlJSCompilePass::Function function = initializer.run(context, name, astNode, irBinding);
 
    m_logger->iterateCurrentFunctionMessages(
            [this](const Message &error) { diagnose(error.message, error.msgType(), error.loc); });
 
    m_logger->setCompileErrorPrefix(u"Could not compile binding for %1: "_s.arg(name));
    m_logger->setCompileSkipPrefix(u"Compilation of binding for %1 was skipped: "_s.arg(name));
 
    analyzeFunction(context, &function);
    if (const auto errors = finalizeBindingOrFunction())
        return *errors;
 
    return QQmlJSAotFunction {};
}
 
std::variant<QQmlJSAotFunction, QList<QQmlJS::DiagnosticMessage>>
QQmlJSLinterCodegen::compileFunction(const QV4::Compiler::Context *context,
                                     const QString &name, QQmlJS::AST::Node *astNode)
{
    m_logger->setCompileErrorPrefix(u"Could not determine signature of function %1: "_s.arg(name));
 
    QQmlJSFunctionInitializer initializer(
                &m_typeResolver, m_currentObject->location, m_currentScope->location, m_logger);
    QQmlJSCompilePass::Function function = initializer.run(context, name, astNode);
 
    m_logger->iterateCurrentFunctionMessages(
            [this](const Message &error) { diagnose(error.message, error.msgType(), error.loc); });
 
    m_logger->setCompileErrorPrefix(u"Could not compile function %1: "_s.arg(name));
    m_logger->setCompileSkipPrefix(u"Compilation of function %1 was skipped: "_s.arg(name));
    analyzeFunction(context, &function);
 
    if (const auto errors = finalizeBindingOrFunction())
        return *errors;
 
    return QQmlJSAotFunction {};
}
 
void QQmlJSLinterCodegen::setPassManager(QQmlSA::PassManager *passManager)
{
    m_passManager = passManager;
    auto managerPriv = QQmlSA::PassManagerPrivate::get(passManager);
    managerPriv->m_typeResolver = typeResolver();
}
 
void QQmlJSLinterCodegen::analyzeFunction(const QV4::Compiler::Context *context,
                                          QQmlJSCompilePass::Function *function)
{
    bool dummy = false;
    QQmlJSCompilePass::BlocksAndAnnotations blocksAndAnnotations =
            QQmlJSBasicBlocks(context, m_unitGenerator, &m_typeResolver, m_logger)
                    .run(function, ValidateBasicBlocks, dummy);
 
    QQmlJSLinterTypePropagator lintTypePropgator(m_unitGenerator, &m_typeResolver, m_logger,
                                                 m_context, blocksAndAnnotations.basicBlocks,
                                                 blocksAndAnnotations.annotations, m_passManager);
    lintTypePropgator.setIdMemberShadows(&m_idMemberShadows);
    blocksAndAnnotations = lintTypePropgator.run(function);
 
    if (m_logger->categorySeverity(qmlCompiler) == QQmlJS::WarningSeverity::Disable)
        return;
 
    if (!m_logger->currentFunctionHasCompileError()) {
        blocksAndAnnotations = QQmlJSShadowCheck(m_unitGenerator, &m_typeResolver, m_logger,
                                                 blocksAndAnnotations.basicBlocks,
                                                 blocksAndAnnotations.annotations)
                                       .run(function);
    }
 
    if (!m_logger->currentFunctionHasCompileError()) {
        blocksAndAnnotations = QQmlJSStorageInitializer(m_unitGenerator, &m_typeResolver, m_logger,
                                                        blocksAndAnnotations.basicBlocks,
                                                        blocksAndAnnotations.annotations)
                                       .run(function);
    }
 
    if (!m_logger->currentFunctionHasCompileError()) {
        blocksAndAnnotations = QQmlJSStorageGeneralizer(m_unitGenerator, &m_typeResolver, m_logger,
                                                        blocksAndAnnotations.basicBlocks,
                                                        blocksAndAnnotations.annotations)
                                       .run(function);
    }
}
 
QT_END_NAMESPACE