Exemplo n.º 1
0
  @NotNull
  private static FrameMap createFrameMap(
      @NotNull GenerationState state,
      @NotNull FunctionDescriptor function,
      @NotNull JvmMethodSignature signature,
      boolean isStatic) {
    FrameMap frameMap = new FrameMap();
    if (!isStatic) {
      frameMap.enterTemp(OBJECT_TYPE);
    }

    for (JvmMethodParameterSignature parameter : signature.getValueParameters()) {
      if (parameter.getKind() == JvmMethodParameterKind.RECEIVER) {
        ReceiverParameterDescriptor receiverParameter = function.getExtensionReceiverParameter();
        if (receiverParameter != null) {
          frameMap.enter(receiverParameter, state.getTypeMapper().mapType(receiverParameter));
        }
      } else if (parameter.getKind() != JvmMethodParameterKind.VALUE) {
        frameMap.enterTemp(parameter.getAsmType());
      }
    }

    for (ValueParameterDescriptor parameter : function.getValueParameters()) {
      frameMap.enter(parameter, state.getTypeMapper().mapType(parameter));
    }

    return frameMap;
  }
Exemplo n.º 2
0
  public static void generateDefaultImplBody(
      @NotNull MethodContext methodContext,
      @NotNull FunctionDescriptor functionDescriptor,
      @NotNull MethodVisitor mv,
      @NotNull DefaultParameterValueLoader loadStrategy,
      @Nullable KtNamedFunction function,
      @NotNull MemberCodegen<?> parentCodegen,
      @NotNull Method defaultMethod) {
    GenerationState state = parentCodegen.state;
    JvmMethodSignature signature =
        state.getTypeMapper().mapSignature(functionDescriptor, methodContext.getContextKind());

    boolean isStatic = isStaticMethod(methodContext.getContextKind(), functionDescriptor);
    FrameMap frameMap = createFrameMap(state, functionDescriptor, signature, isStatic);

    ExpressionCodegen codegen =
        new ExpressionCodegen(
            mv, frameMap, signature.getReturnType(), methodContext, state, parentCodegen);

    CallGenerator generator =
        codegen.getOrCreateCallGeneratorForDefaultImplBody(functionDescriptor, function);

    InstructionAdapter iv = new InstructionAdapter(mv);
    genDefaultSuperCallCheckIfNeeded(iv, defaultMethod);

    loadExplicitArgumentsOnStack(OBJECT_TYPE, isStatic, signature, generator);

    List<JvmMethodParameterSignature> mappedParameters = signature.getValueParameters();
    int capturedArgumentsCount = 0;
    while (capturedArgumentsCount < mappedParameters.size()
        && mappedParameters.get(capturedArgumentsCount).getKind() != JvmMethodParameterKind.VALUE) {
      capturedArgumentsCount++;
    }

    int maskIndex = 0;
    List<ValueParameterDescriptor> valueParameters = functionDescriptor.getValueParameters();
    for (int index = 0; index < valueParameters.size(); index++) {
      if (index % Integer.SIZE == 0) {
        maskIndex = frameMap.enterTemp(Type.INT_TYPE);
      }
      ValueParameterDescriptor parameterDescriptor = valueParameters.get(index);
      Type type = mappedParameters.get(capturedArgumentsCount + index).getAsmType();

      int parameterIndex = frameMap.getIndex(parameterDescriptor);
      if (parameterDescriptor.declaresDefaultValue()) {
        iv.load(maskIndex, Type.INT_TYPE);
        iv.iconst(1 << (index % Integer.SIZE));
        iv.and(Type.INT_TYPE);
        Label loadArg = new Label();
        iv.ifeq(loadArg);

        StackValue.local(parameterIndex, type)
            .store(loadStrategy.genValue(parameterDescriptor, codegen), iv);

        iv.mark(loadArg);
      }

      generator.putValueIfNeeded(type, StackValue.local(parameterIndex, type));
    }

    CallableMethod method = state.getTypeMapper().mapToCallableMethod(functionDescriptor, false);

    generator.genCallWithoutAssertions(method, codegen);

    iv.areturn(signature.getReturnType());
  }
Exemplo n.º 3
0
  public static void generateMethodBody(
      @NotNull MethodVisitor mv,
      @NotNull FunctionDescriptor functionDescriptor,
      @NotNull MethodContext context,
      @NotNull JvmMethodSignature signature,
      @NotNull FunctionGenerationStrategy strategy,
      @NotNull MemberCodegen<?> parentCodegen) {
    mv.visitCode();

    Label methodBegin = new Label();
    mv.visitLabel(methodBegin);

    JetTypeMapper typeMapper = parentCodegen.typeMapper;
    if (BuiltinSpecialBridgesUtil.shouldHaveTypeSafeBarrier(
        functionDescriptor, getSignatureMapper(typeMapper))) {
      generateTypeCheckBarrierIfNeeded(
          new InstructionAdapter(mv),
          functionDescriptor,
          signature.getReturnType(),
          /* delegateParameterType = */ null);
    }

    Label methodEnd;

    int functionFakeIndex = -1;
    int lambdaFakeIndex = -1;

    if (context.getParentContext() instanceof MultifileClassFacadeContext) {
      generateFacadeDelegateMethodBody(
          mv, signature.getAsmMethod(), (MultifileClassFacadeContext) context.getParentContext());
      methodEnd = new Label();
    } else {
      FrameMap frameMap =
          createFrameMap(
              parentCodegen.state,
              functionDescriptor,
              signature,
              isStaticMethod(context.getContextKind(), functionDescriptor));
      if (context.isInlineMethodContext()) {
        functionFakeIndex = frameMap.enterTemp(Type.INT_TYPE);
      }

      if (context instanceof InlineLambdaContext) {
        lambdaFakeIndex = frameMap.enterTemp(Type.INT_TYPE);
      }

      Label methodEntry = new Label();
      mv.visitLabel(methodEntry);
      context.setMethodStartLabel(methodEntry);

      if (!JetTypeMapper.isAccessor(functionDescriptor)) {
        genNotNullAssertionsForParameters(
            new InstructionAdapter(mv), parentCodegen.state, functionDescriptor, frameMap);
      }
      methodEnd = new Label();
      context.setMethodEndLabel(methodEnd);
      strategy.generateBody(mv, frameMap, signature, context, parentCodegen);
    }

    mv.visitLabel(methodEnd);

    Type thisType = getThisTypeForFunction(functionDescriptor, context, typeMapper);
    generateLocalVariableTable(
        mv,
        signature,
        functionDescriptor,
        thisType,
        methodBegin,
        methodEnd,
        context.getContextKind());

    if (context.isInlineMethodContext() && functionFakeIndex != -1) {
      mv.visitLocalVariable(
          JvmAbi.LOCAL_VARIABLE_NAME_PREFIX_INLINE_FUNCTION
              + functionDescriptor.getName().asString(),
          Type.INT_TYPE.getDescriptor(),
          null,
          methodBegin,
          methodEnd,
          functionFakeIndex);
    }

    if (context instanceof InlineLambdaContext && thisType != null && lambdaFakeIndex != -1) {
      String name = thisType.getClassName();
      int indexOfLambdaOrdinal = name.lastIndexOf("$");
      if (indexOfLambdaOrdinal > 0) {
        int lambdaOrdinal = Integer.parseInt(name.substring(indexOfLambdaOrdinal + 1));
        mv.visitLocalVariable(
            JvmAbi.LOCAL_VARIABLE_NAME_PREFIX_INLINE_ARGUMENT + lambdaOrdinal,
            Type.INT_TYPE.getDescriptor(),
            null,
            methodBegin,
            methodEnd,
            lambdaFakeIndex);
      }
    }
  }