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+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the tools applications of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://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 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#ifndef QQMLTYPECOMPILER_P_H
+#define QQMLTYPECOMPILER_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <qglobal.h>
+#include <qqmlerror.h>
+#include <qhash.h>
+#include <private/qqmltypeloader_p.h>
+#include <private/qqmlirbuilder_p.h>
+#include <private/qqmlpropertycachecreator_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QQmlEnginePrivate;
+class QQmlError;
+class QQmlTypeData;
+class QQmlImports;
+
+namespace QmlIR {
+struct Document;
+}
+
+namespace QV4 {
+namespace CompiledData {
+struct QmlUnit;
+struct Location;
+}
+}
+
+struct QQmlTypeCompiler
+{
+    Q_DECLARE_TR_FUNCTIONS(QQmlTypeCompiler)
+public:
+    QQmlTypeCompiler(QQmlEnginePrivate *engine, QQmlTypeData *typeData, QmlIR::Document *document,
+                     const QQmlRefPointer<QQmlTypeNameCache> &typeNameCache,
+                     QV4::ResolvedTypeReferenceMap *resolvedTypeCache,
+                     const QV4::CompiledData::DependentTypesHasher &dependencyHasher);
+
+    // --- interface used by QQmlPropertyCacheCreator
+    typedef QmlIR::Object CompiledObject;
+    const QmlIR::Object *objectAt(int index) const { return document->objects.at(index); }
+    int objectCount() const { return document->objects.count(); }
+    QString stringAt(int idx) const;
+    QmlIR::PoolList<QmlIR::Function>::Iterator objectFunctionsBegin(const QmlIR::Object *object) const { return object->functionsBegin(); }
+    QmlIR::PoolList<QmlIR::Function>::Iterator objectFunctionsEnd(const QmlIR::Object *object) const { return object->functionsEnd(); }
+    QV4::ResolvedTypeReferenceMap *resolvedTypes = nullptr;
+    // ---
+
+    QQmlRefPointer<QV4::ExecutableCompilationUnit> compile();
+
+    QList<QQmlError> compilationErrors() const { return errors; }
+    void recordError(const QV4::CompiledData::Location &location, const QString &description);
+    void recordError(const QQmlJS::DiagnosticMessage &error);
+
+    int registerString(const QString &str);
+    int registerConstant(QV4::ReturnedValue v);
+
+    const QV4::CompiledData::Unit *qmlUnit() const;
+
+    QUrl url() const { return typeData->finalUrl(); }
+    QQmlEnginePrivate *enginePrivate() const { return engine; }
+    const QQmlImports *imports() const;
+    QVector<QmlIR::Object *> *qmlObjects() const;
+    void setPropertyCaches(QQmlPropertyCacheVector &&caches);
+    const QQmlPropertyCacheVector *propertyCaches() const;
+    QQmlPropertyCacheVector &&takePropertyCaches();
+    void setComponentRoots(const QVector<quint32> &roots) { m_componentRoots = roots; }
+    const QVector<quint32> &componentRoots() const { return m_componentRoots; }
+    QQmlJS::MemoryPool *memoryPool();
+    QStringRef newStringRef(const QString &string);
+    const QV4::Compiler::StringTableGenerator *stringPool() const;
+
+    const QHash<int, QQmlCustomParser*> &customParserCache() const { return customParsers; }
+
+    QString bindingAsString(const QmlIR::Object *object, int scriptIndex) const;
+
+    void addImport(const QString &module, const QString &qualifier, int majorVersion, int minorVersion);
+
+    QV4::ResolvedTypeReference *resolvedType(int id) const
+    {
+        return resolvedTypes->value(id);
+    }
+
+private:
+    QList<QQmlError> errors;
+    QQmlEnginePrivate *engine;
+    QQmlTypeData *typeData;
+    const QV4::CompiledData::DependentTypesHasher &dependencyHasher;
+    QQmlRefPointer<QQmlTypeNameCache> typeNameCache;
+    QmlIR::Document *document;
+    // index is string index of type name (use obj->inheritedTypeNameIndex)
+    QHash<int, QQmlCustomParser*> customParsers;
+
+    // index in first hash is component index, vector inside contains object indices of objects with id property
+    QVector<quint32> m_componentRoots;
+    QQmlPropertyCacheVector m_propertyCaches;
+};
+
+struct QQmlCompilePass
+{
+    QQmlCompilePass(QQmlTypeCompiler *typeCompiler);
+
+    QString stringAt(int idx) const { return compiler->stringAt(idx); }
+protected:
+    void recordError(const QV4::CompiledData::Location &location, const QString &description) const
+    { compiler->recordError(location, description); }
+    void recordError(const QQmlJS::DiagnosticMessage &error)
+    { compiler->recordError(error); }
+
+    QV4::ResolvedTypeReference *resolvedType(int id) const
+    { return compiler->resolvedType(id); }
+    bool containsResolvedType(int id) const
+    { return compiler->resolvedTypes->contains(id); }
+    QV4::ResolvedTypeReferenceMap::iterator insertResolvedType(
+            int id, QV4::ResolvedTypeReference *value)
+    { return compiler->resolvedTypes->insert(id, value); }
+
+    QQmlTypeCompiler *compiler;
+};
+
+// "Converts" signal expressions to full-fleged function declarations with
+// parameters taken from the signal declarations
+// It also updates the QV4::CompiledData::Binding objects to set the property name
+// to the final signal name (onTextChanged -> textChanged) and sets the IsSignalExpression flag.
+struct SignalHandlerConverter : public QQmlCompilePass
+{
+    Q_DECLARE_TR_FUNCTIONS(SignalHandlerConverter)
+public:
+    SignalHandlerConverter(QQmlTypeCompiler *typeCompiler);
+
+    bool convertSignalHandlerExpressionsToFunctionDeclarations();
+
+private:
+    bool convertSignalHandlerExpressionsToFunctionDeclarations(const QmlIR::Object *obj, const QString &typeName, QQmlPropertyCache *propertyCache);
+
+    QQmlEnginePrivate *enginePrivate;
+    const QVector<QmlIR::Object*> &qmlObjects;
+    const QQmlImports *imports;
+    const QHash<int, QQmlCustomParser*> &customParsers;
+    const QSet<QString> &illegalNames;
+    const QQmlPropertyCacheVector * const propertyCaches;
+};
+
+// ### This will go away when the codegen resolves all enums to constant expressions
+// and we replace the constant expression with a literal binding instead of using
+// a script.
+class QQmlEnumTypeResolver : public QQmlCompilePass
+{
+    Q_DECLARE_TR_FUNCTIONS(QQmlEnumTypeResolver)
+public:
+    QQmlEnumTypeResolver(QQmlTypeCompiler *typeCompiler);
+
+    bool resolveEnumBindings();
+
+private:
+    bool assignEnumToBinding(QmlIR::Binding *binding, const QStringRef &enumName, int enumValue, bool isQtObject);
+    bool assignEnumToBinding(QmlIR::Binding *binding, const QString &enumName, int enumValue, bool isQtObject)
+    {
+        return assignEnumToBinding(binding, QStringRef(&enumName), enumValue, isQtObject);
+    }
+    bool tryQualifiedEnumAssignment(const QmlIR::Object *obj, const QQmlPropertyCache *propertyCache,
+                                    const QQmlPropertyData *prop,
+                                    QmlIR::Binding *binding);
+    int evaluateEnum(const QString &scope, const QStringRef &enumName, const QStringRef &enumValue, bool *ok) const;
+
+
+    const QVector<QmlIR::Object*> &qmlObjects;
+    const QQmlPropertyCacheVector * const propertyCaches;
+    const QQmlImports *imports;
+};
+
+class QQmlCustomParserScriptIndexer: public QQmlCompilePass
+{
+public:
+    QQmlCustomParserScriptIndexer(QQmlTypeCompiler *typeCompiler);
+
+    void annotateBindingsWithScriptStrings();
+
+private:
+    void scanObjectRecursively(int objectIndex, bool annotateScriptBindings = false);
+
+    const QVector<QmlIR::Object*> &qmlObjects;
+    const QHash<int, QQmlCustomParser*> &customParsers;
+};
+
+// Annotate properties bound to aliases with a flag
+class QQmlAliasAnnotator : public QQmlCompilePass
+{
+public:
+    QQmlAliasAnnotator(QQmlTypeCompiler *typeCompiler);
+
+    void annotateBindingsToAliases();
+private:
+    const QVector<QmlIR::Object*> &qmlObjects;
+    const QQmlPropertyCacheVector * const propertyCaches;
+};
+
+class QQmlScriptStringScanner : public QQmlCompilePass
+{
+public:
+    QQmlScriptStringScanner(QQmlTypeCompiler *typeCompiler);
+
+    void scan();
+
+private:
+    const QVector<QmlIR::Object*> &qmlObjects;
+    const QQmlPropertyCacheVector * const propertyCaches;
+};
+
+class QQmlComponentAndAliasResolver : public QQmlCompilePass
+{
+    Q_DECLARE_TR_FUNCTIONS(QQmlAnonymousComponentResolver)
+public:
+    QQmlComponentAndAliasResolver(QQmlTypeCompiler *typeCompiler);
+
+    bool resolve();
+
+protected:
+    void findAndRegisterImplicitComponents(const QmlIR::Object *obj, QQmlPropertyCache *propertyCache);
+    bool collectIdsAndAliases(int objectIndex);
+    bool resolveAliases(int componentIndex);
+    void propertyDataForAlias(QmlIR::Alias *alias, int *type, quint32 *propertyFlags);
+
+    enum AliasResolutionResult {
+        NoAliasResolved,
+        SomeAliasesResolved,
+        AllAliasesResolved
+    };
+
+    AliasResolutionResult resolveAliasesInObject(int objectIndex, QQmlJS::DiagnosticMessage *error);
+
+    QQmlEnginePrivate *enginePrivate;
+    QQmlJS::MemoryPool *pool;
+
+    QVector<QmlIR::Object*> *qmlObjects;
+
+    // indices of the objects that are actually Component {}
+    QVector<quint32> componentRoots;
+
+    // Deliberate choice of map over hash here to ensure stable generated output.
+    QMap<int, int> _idToObjectIndex;
+    QVector<int> _objectsWithAliases;
+
+    QQmlPropertyCacheVector propertyCaches;
+};
+
+class QQmlDeferredAndCustomParserBindingScanner : public QQmlCompilePass
+{
+public:
+    QQmlDeferredAndCustomParserBindingScanner(QQmlTypeCompiler *typeCompiler);
+
+    bool scanObject();
+
+private:
+    bool scanObject(int objectIndex);
+
+    QVector<QmlIR::Object*> *qmlObjects;
+    const QQmlPropertyCacheVector * const propertyCaches;
+    const QHash<int, QQmlCustomParser*> &customParsers;
+
+    bool _seenObjectWithId;
+};
+
+class QQmlDefaultPropertyMerger : public QQmlCompilePass
+{
+public:
+    QQmlDefaultPropertyMerger(QQmlTypeCompiler *typeCompiler);
+
+    void mergeDefaultProperties();
+
+private:
+    void mergeDefaultProperties(int objectIndex);
+
+    const QVector<QmlIR::Object*> &qmlObjects;
+    const QQmlPropertyCacheVector * const propertyCaches;
+};
+
+QT_END_NAMESPACE
+
+#endif // QQMLTYPECOMPILER_P_H