335 lines
14 KiB
C++
335 lines
14 KiB
C++
// Copyright (C) 2021 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial
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#ifndef QQMLJSCODEGENERATOR_P_H
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#define QQMLJSCODEGENERATOR_P_H
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//
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// W A R N I N G
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// -------------
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//
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// This file is not part of the Qt API. It exists purely as an
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// implementation detail. This header file may change from version to
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// version without notice, or even be removed.
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//
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// We mean it.
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#include <private/qqmljscompiler_p.h>
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#include <private/qqmljstypepropagator_p.h>
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#include <private/qqmljstyperesolver_p.h>
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#include <private/qv4bytecodehandler_p.h>
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#include <private/qv4codegen_p.h>
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#include <QtCore/qstring.h>
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#include <memory>
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QT_BEGIN_NAMESPACE
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class Q_QMLCOMPILER_PRIVATE_EXPORT QQmlJSCodeGenerator : public QQmlJSCompilePass
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{
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public:
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QQmlJSCodeGenerator(const QV4::Compiler::Context *compilerContext,
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const QV4::Compiler::JSUnitGenerator *unitGenerator,
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const QQmlJSTypeResolver *typeResolver,
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QQmlJSLogger *logger);
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~QQmlJSCodeGenerator() = default;
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QQmlJSAotFunction run(const Function *function, const InstructionAnnotations *annotations,
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QQmlJS::DiagnosticMessage *error);
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protected:
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struct CodegenState : public State
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{
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QString accumulatorVariableIn;
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QString accumulatorVariableOut;
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};
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// This is an RAII helper we can use to automatically convert the result of "inflexible"
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// operations to the desired type. For example GetLookup can only retrieve the type of
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// the property we're looking up. If we want to store a different type, we need to convert.
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struct Q_QMLCOMPILER_PRIVATE_EXPORT AccumulatorConverter
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{
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Q_DISABLE_COPY_MOVE(AccumulatorConverter);
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AccumulatorConverter(QQmlJSCodeGenerator *generator);
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~AccumulatorConverter();
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private:
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const QQmlJSRegisterContent accumulatorOut;
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const QString accumulatorVariableIn;
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const QString accumulatorVariableOut;
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QQmlJSCodeGenerator *generator = nullptr;
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};
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virtual QString metaObject(const QQmlJSScope::ConstPtr &objectType);
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void generate_Ret() override;
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void generate_Debug() override;
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void generate_LoadConst(int index) override;
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void generate_LoadZero() override;
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void generate_LoadTrue() override;
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void generate_LoadFalse() override;
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void generate_LoadNull() override;
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void generate_LoadUndefined() override;
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void generate_LoadInt(int value) override;
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void generate_MoveConst(int constIndex, int destTemp) override;
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void generate_LoadReg(int reg) override;
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void generate_StoreReg(int reg) override;
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void generate_MoveReg(int srcReg, int destReg) override;
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void generate_LoadImport(int index) override;
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void generate_LoadLocal(int index) override;
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void generate_StoreLocal(int index) override;
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void generate_LoadScopedLocal(int scope, int index) override;
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void generate_StoreScopedLocal(int scope, int index) override;
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void generate_LoadRuntimeString(int stringId) override;
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void generate_MoveRegExp(int regExpId, int destReg) override;
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void generate_LoadClosure(int value) override;
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void generate_LoadName(int nameIndex) override;
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void generate_LoadGlobalLookup(int index) override;
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void generate_LoadQmlContextPropertyLookup(int index) override;
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void generate_StoreNameSloppy(int nameIndex) override;
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void generate_StoreNameStrict(int name) override;
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void generate_LoadElement(int base) override;
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void generate_StoreElement(int base, int index) override;
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void generate_LoadProperty(int nameIndex) override;
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void generate_LoadOptionalProperty(int name, int offset) override;
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void generate_GetLookup(int index) override;
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void generate_GetOptionalLookup(int index, int offset) override;
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void generate_StoreProperty(int name, int baseReg) override;
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void generate_SetLookup(int index, int base) override;
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void generate_LoadSuperProperty(int property) override;
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void generate_StoreSuperProperty(int property) override;
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void generate_Yield() override;
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void generate_YieldStar() override;
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void generate_Resume(int) override;
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void generate_CallValue(int name, int argc, int argv) override;
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void generate_CallWithReceiver(int name, int thisObject, int argc, int argv) override;
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void generate_CallProperty(int name, int base, int argc, int argv) override;
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void generate_CallPropertyLookup(int lookupIndex, int base, int argc, int argv) override;
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void generate_CallName(int name, int argc, int argv) override;
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void generate_CallPossiblyDirectEval(int argc, int argv) override;
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void generate_CallGlobalLookup(int index, int argc, int argv) override;
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void generate_CallQmlContextPropertyLookup(int index, int argc, int argv) override;
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void generate_CallWithSpread(int func, int thisObject, int argc, int argv) override;
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void generate_TailCall(int func, int thisObject, int argc, int argv) override;
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void generate_Construct(int func, int argc, int argv) override;
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void generate_ConstructWithSpread(int func, int argc, int argv) override;
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void generate_SetUnwindHandler(int offset) override;
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void generate_UnwindDispatch() override;
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void generate_UnwindToLabel(int level, int offset) override;
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void generate_DeadTemporalZoneCheck(int name) override;
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void generate_ThrowException() override;
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void generate_GetException() override;
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void generate_SetException() override;
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void generate_CreateCallContext() override;
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void generate_PushCatchContext(int index, int name) override;
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void generate_PushWithContext() override;
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void generate_PushBlockContext(int index) override;
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void generate_CloneBlockContext() override;
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void generate_PushScriptContext(int index) override;
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void generate_PopScriptContext() override;
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void generate_PopContext() override;
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void generate_GetIterator(int iterator) override;
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void generate_IteratorNext(int value, int done) override;
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void generate_IteratorNextForYieldStar(int iterator, int object) override;
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void generate_IteratorClose(int done) override;
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void generate_DestructureRestElement() override;
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void generate_DeleteProperty(int base, int index) override;
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void generate_DeleteName(int name) override;
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void generate_TypeofName(int name) override;
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void generate_TypeofValue() override;
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void generate_DeclareVar(int varName, int isDeletable) override;
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void generate_DefineArray(int argc, int args) override;
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void generate_DefineObjectLiteral(int internalClassId, int argc, int args) override;
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void generate_CreateClass(int classIndex, int heritage, int computedNames) override;
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void generate_CreateMappedArgumentsObject() override;
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void generate_CreateUnmappedArgumentsObject() override;
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void generate_CreateRestParameter(int argIndex) override;
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void generate_ConvertThisToObject() override;
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void generate_LoadSuperConstructor() override;
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void generate_ToObject() override;
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void generate_Jump(int offset) override;
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void generate_JumpTrue(int offset) override;
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void generate_JumpFalse(int offset) override;
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void generate_JumpNoException(int offset) override;
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void generate_JumpNotUndefined(int offset) override;
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void generate_CheckException() override;
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void generate_CmpEqNull() override;
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void generate_CmpNeNull() override;
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void generate_CmpEqInt(int lhs) override;
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void generate_CmpNeInt(int lhs) override;
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void generate_CmpEq(int lhs) override;
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void generate_CmpNe(int lhs) override;
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void generate_CmpGt(int lhs) override;
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void generate_CmpGe(int lhs) override;
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void generate_CmpLt(int lhs) override;
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void generate_CmpLe(int lhs) override;
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void generate_CmpStrictEqual(int lhs) override;
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void generate_CmpStrictNotEqual(int lhs) override;
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void generate_CmpIn(int lhs) override;
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void generate_CmpInstanceOf(int lhs) override;
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void generate_As(int lhs) override;
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void generate_UNot() override;
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void generate_UPlus() override;
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void generate_UMinus() override;
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void generate_UCompl() override;
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void generate_Increment() override;
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void generate_Decrement() override;
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void generate_Add(int lhs) override;
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void generate_BitAnd(int lhs) override;
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void generate_BitOr(int lhs) override;
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void generate_BitXor(int lhs) override;
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void generate_UShr(int lhs) override;
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void generate_Shr(int lhs) override;
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void generate_Shl(int lhs) override;
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void generate_BitAndConst(int rhs) override;
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void generate_BitOrConst(int rhs) override;
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void generate_BitXorConst(int rhs) override;
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void generate_UShrConst(int rhs) override;
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void generate_ShrConst(int value) override;
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void generate_ShlConst(int rhs) override;
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void generate_Exp(int lhs) override;
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void generate_Mul(int lhs) override;
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void generate_Div(int lhs) override;
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void generate_Mod(int lhs) override;
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void generate_Sub(int lhs) override;
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void generate_InitializeBlockDeadTemporalZone(int firstReg, int count) override;
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void generate_ThrowOnNullOrUndefined() override;
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void generate_GetTemplateObject(int index) override;
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Verdict startInstruction(QV4::Moth::Instr::Type) override;
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void endInstruction(QV4::Moth::Instr::Type) override;
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void addInclude(const QString &include)
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{
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Q_ASSERT(!include.isEmpty());
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m_includes.append(include);
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}
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QString conversion(const QQmlJSRegisterContent &from,
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const QQmlJSRegisterContent &to,
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const QString &variable)
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{
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return conversion(from.storedType(), to.storedType(), variable);
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}
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QString conversion(const QQmlJSScope::ConstPtr &from,
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const QQmlJSScope::ConstPtr &to,
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const QString &variable);
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QString errorReturnValue();
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void reject(const QString &thing);
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QString metaTypeFromType(const QQmlJSScope::ConstPtr &type) const;
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QString metaTypeFromName(const QQmlJSScope::ConstPtr &type) const;
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QString contentPointer(const QQmlJSRegisterContent &content, const QString &var);
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QString contentType(const QQmlJSRegisterContent &content, const QString &var);
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void generateSetInstructionPointer();
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void generateLookup(const QString &lookup, const QString &initialization,
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const QString &resultPreparation = QString());
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QString getLookupPreparation(
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const QQmlJSRegisterContent &content, const QString &var, int lookup);
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QString setLookupPreparation(
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const QQmlJSRegisterContent &content, const QString &arg, int lookup);
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void generateEnumLookup(int index);
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QString registerVariable(int index) const;
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QString changedRegisterVariable() const;
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QQmlJSRegisterContent registerType(int index) const;
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QString m_body;
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CodegenState m_state;
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void resetState() { m_state = CodegenState(); }
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private:
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void generateExceptionCheck();
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void generateEqualityOperation(int lhs, const QString &function, bool invert);
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void generateCompareOperation(int lhs, const QString &cppOperator);
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void generateArithmeticOperation(int lhs, const QString &cppOperator);
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void generateShiftOperation(int lhs, const QString &cppOperator);
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void generateArithmeticOperation(
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const QString &lhs, const QString &rhs, const QString &cppOperator);
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void generateArithmeticConstOperation(int lhsConst, const QString &cppOperator);
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void generateJumpCodeWithTypeConversions(int relativeOffset);
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void generateUnaryOperation(const QString &cppOperator);
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void generateInPlaceOperation(const QString &cppOperator);
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void generateMoveOutVar(const QString &outVar);
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void generateTypeLookup(int index);
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void generateOutputVariantConversion(const QQmlJSScope::ConstPtr &containedType);
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void generateVariantEqualityComparison(const QQmlJSRegisterContent &nonStorable,
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const QString ®isterName, bool invert);
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void rejectIfNonQObjectOut(const QString &error);
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QString eqIntExpression(int lhsConst);
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QString argumentsList(int argc, int argv, QString *outVar);
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QString castTargetName(const QQmlJSScope::ConstPtr &type) const;
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bool inlineStringMethod(const QString &name, int base, int argc, int argv);
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bool inlineTranslateMethod(const QString &name, int argc, int argv);
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bool inlineMathMethod(const QString &name, int argc, int argv);
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bool inlineConsoleMethod(const QString &name, int argc, int argv);
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QQmlJSScope::ConstPtr mathObject() const
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{
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using namespace Qt::StringLiterals;
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return m_typeResolver->jsGlobalObject()->property(u"Math"_s).type();
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}
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QQmlJSScope::ConstPtr consoleObject() const
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{
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using namespace Qt::StringLiterals;
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return m_typeResolver->jsGlobalObject()->property(u"console"_s).type();
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}
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// map from instruction offset to sequential label number
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QHash<int, QString> m_labels;
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const QV4::Compiler::Context *m_context = nullptr;
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const InstructionAnnotations *m_annotations = nullptr;
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bool m_skipUntilNextLabel = false;
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QStringList m_includes;
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struct RegisterVariablesKey
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{
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QString internalName;
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int registerIndex = -1;
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private:
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friend size_t qHash(const RegisterVariablesKey &key, size_t seed = 0) noexcept
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{
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return qHashMulti(seed, key.internalName, key.registerIndex);
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}
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friend bool operator==(
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const RegisterVariablesKey &lhs, const RegisterVariablesKey &rhs) noexcept
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{
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return lhs.registerIndex == rhs.registerIndex && lhs.internalName == rhs.internalName;
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}
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friend bool operator!=(
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const RegisterVariablesKey &lhs, const RegisterVariablesKey &rhs) noexcept
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{
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return !(lhs == rhs);
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}
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};
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struct RegisterVariablesValue
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{
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QString variableName;
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QQmlJSScope::ConstPtr storedType;
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int numTracked = 0;
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};
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QHash<RegisterVariablesKey, RegisterVariablesValue> m_registerVariables;
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};
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QT_END_NAMESPACE
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#endif // QQMLJSCODEGENERATOR_P_H
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