Revision control
++ // Copyright (C) 2026 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
++ // Qt-Security score:significant reason:default
++
++ #ifndef QQMLPREVIEWDIFF_P_H
++ #define QQMLPREVIEWDIFF_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 <private/qv4compileddata_p.h>
++
++ #include <QtCore/qbytearray.h>
++ #include <QtCore/qlist.h>
++ #include <QtCore/qvariant.h>
++
++ QT_BEGIN_NAMESPACE
++
++ namespace QV4::CompiledData {
++ enum class ChangeType : quint8 {
++ None,
++
++ // -- Changes to various internal tables, source file, timestamp, etc.
++ UnitMetadataChanged,
++
++ BlockAdded,
++ BlockChanged,
++ BlockRemoved,
++
++ ClassAdded,
++ ClassChanged,
++ ClassRemoved,
++
++ ConstantAdded,
++ ConstantChanged,
++ ConstantRemoved,
++
++ JSClassAdded,
++ JSClassChanged,
++ JSClassRemoved,
++
++ LookupAdded,
++ LookupChanged,
++ LookupRemoved,
++
++ RegExpAdded,
++ RegExpChanged,
++ RegExpRemoved,
++
++ RequiredPropertyExtraDataAdded,
++ RequiredPropertyExtraDataChanged,
++ RequiredPropertyExtraDataRemoved,
++
++ StringDataAdded,
++ StringDataChanged,
++ StringDataRemoved,
++
++ TemplateObjectAdded,
++ TemplateObjectChanged,
++ TemplateObjectRemoved,
++
++ TranslationDataAdded,
++ TranslationDataChanged,
++ TranslationDataRemoved,
++
++ // -- Actual document-level changes --
++
++ AliasAdded,
++ AliasChanged,
++ AliasRemoved,
++ AliasLocationChanged,
++
++ BindingAdded,
++ BindingChanged,
++ BindingRemoved,
++ BindingLocationChanged,
++
++ EnumAdded,
++ EnumChanged,
++ EnumRemoved,
++ EnumLocationChanged,
++
++ FunctionAdded,
++ FunctionChanged,
++ FunctionRemoved,
++ FunctionLocationChanged,
++
++ ImportAdded,
++ ImportChanged,
++ ImportRemoved,
++ ImportLocationChanged,
++
++ InlineComponentAdded,
++ InlineComponentChanged,
++ InlineComponentRemoved,
++ InlineComponentLocationChanged,
++
++ ObjectAdded,
++ ObjectChanged,
++ ObjectRemoved,
++ ObjectLocationChanged,
++
++ PropertyAdded,
++ PropertyChanged,
++ PropertyRemoved,
++ PropertyLocationChanged,
++
++ SignalAdded,
++ SignalChanged,
++ SignalRemoved,
++ SignalLocationChanged,
++
++ Unknown,
++ };
++
++ using UnitHunk = Unit;
++ using TranslationDataHunk = TranslationData;
++ using InlineComponentHunk = InlineComponent;
++ using RequiredPropertyExtraDataHunk = RequiredPropertyExtraData;
++ using LookupHunk = Lookup;
++ using RegExpHunk = RegExp;
++ using ImportHunk = Import;
++ using AliasHunk = Alias;
++ using BindingHunk = Binding;
++ using PropertyHunk = Property;
++ using ConstantHunk = quint64_le;
++ using StringHunk = QString;
++ using FunctionIndexHunk = quint32_le;
++ using NamedObjectInComponentIndexHunk = quint32_le;
++
++ struct EnumHunk
++ {
++ Enum data;
++ QList<EnumValue> values;
++ };
++
++ struct SignalHunk
++ {
++ Signal data;
++ QList<Parameter> parameters;
++ };
++
++ struct FunctionHunk
++ {
++ Function data;
++
++ QList<Parameter> formals;
++ QList<quint32_le> locals;
++ QList<CodeOffsetToLineAndStatement> lineAndStatementNumbers;
++ QList<quint32_le> labelInfos;
++ QByteArray code;
++ };
++
++ struct ClassHunk
++ {
++ Class data;
++ QList<Method> methods;
++ };
++
++ struct TemplateObjectHunk
++ {
++ quint32 size;
++ QList<quint32_le> strings; // 2*size entries: raw[0..size-1] then cooked[0..size-1]
++ };
++
++ struct JsClassHunk
++ {
++ quint32 nMembers;
++ QList<JSClassMember> members;
++ };
++
++ struct BlockHunk
++ {
++ Block data;
++ QList<quint32_le> locals;
++ };
++
++ struct ObjectHunk
++ {
++ Object data;
++
++ QList<FunctionIndexHunk> functionIndices;
++ QList<PropertyHunk> properties;
++ QList<AliasHunk> aliases;
++ QList<EnumHunk> enums;
++ QList<SignalHunk> sigs;
++ QList<BindingHunk> bindings;
++ QList<NamedObjectInComponentIndexHunk> namedObjectsInComponentIndices;
++ QList<InlineComponentHunk> inlineComponents;
++ QList<RequiredPropertyExtraDataHunk> requiredPropertyExtraData;
++ };
++
++ struct NoHunk {};
++
++ struct Change
++ {
++ ChangeType type = ChangeType::None;
++ int objectIndex = -1;
++
++ // binding/property/function/object/etc index depending on type
++ quint32 index = 0;
++
++ std::variant<NoHunk, ConstantHunk, BindingHunk, PropertyHunk, AliasHunk, EnumHunk, SignalHunk,
++ ObjectHunk, UnitHunk, StringHunk, LookupHunk, RegExpHunk, FunctionHunk,
++ ClassHunk, TemplateObjectHunk, JsClassHunk, BlockHunk, ImportHunk,
++ TranslationDataHunk, InlineComponentHunk, RequiredPropertyExtraDataHunk>
++ data;
++ };
++
++ struct CompilationUnitDiff
++ {
++ QList<Change> changes;
++ bool success = false;
++ };
++
++ // Compare two compilation units and return a diff describing the changes
++ CompilationUnitDiff diffCompilationUnits(const Unit *oldUnit, const Unit *newUnit);
++
++ } // namespace QV4::CompiledData
++
++ QT_END_NAMESPACE
++
++ #endif // QQMLPREVIEWDIFF_P_H