Exemple #1
0
  private SMAPAndMethodNode generateLambdaBody(LambdaInfo info) {
    JetExpression declaration = info.getFunctionWithBodyOrCallableReference();
    FunctionDescriptor descriptor = info.getFunctionDescriptor();

    MethodContext parentContext = codegen.getContext();

    MethodContext context =
        parentContext.intoClosure(descriptor, codegen, typeMapper).intoInlinedLambda(descriptor);

    JvmMethodSignature jvmMethodSignature = typeMapper.mapSignature(descriptor);
    Method asmMethod = jvmMethodSignature.getAsmMethod();
    MethodNode methodNode =
        new MethodNode(
            InlineCodegenUtil.API,
            getMethodAsmFlags(descriptor, context.getContextKind()),
            asmMethod.getName(),
            asmMethod.getDescriptor(),
            jvmMethodSignature.getGenericsSignature(),
            null);

    MethodVisitor adapter = InlineCodegenUtil.wrapWithMaxLocalCalc(methodNode);

    SMAP smap =
        generateMethodBody(adapter, descriptor, context, declaration, jvmMethodSignature, true);
    adapter.visitMaxs(-1, -1);
    return new SMAPAndMethodNode(methodNode, smap);
  }
Exemple #2
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  void generateDefaultIfNeeded(
      @NotNull MethodContext owner,
      @NotNull FunctionDescriptor functionDescriptor,
      @NotNull OwnerKind kind,
      @NotNull DefaultParameterValueLoader loadStrategy,
      @Nullable KtNamedFunction function) {
    DeclarationDescriptor contextClass = owner.getContextDescriptor().getContainingDeclaration();

    if (kind != OwnerKind.DEFAULT_IMPLS && isInterface(contextClass)) {
      return;
    }

    if (!isDefaultNeeded(functionDescriptor)) {
      return;
    }

    int flags =
        getVisibilityAccessFlag(functionDescriptor)
            | getDeprecatedAccessFlag(functionDescriptor)
            | ACC_SYNTHETIC;
    if (!(functionDescriptor instanceof ConstructorDescriptor)) {
      flags |= ACC_STATIC | ACC_BRIDGE;
    }
    // $default methods are never private to be accessible from other class files (e.g. inner)
    // without the need of synthetic accessors
    flags &= ~ACC_PRIVATE;

    Method defaultMethod = typeMapper.mapDefaultMethod(functionDescriptor, kind);

    MethodVisitor mv =
        v.newMethod(
            JvmDeclarationOriginKt.Synthetic(function, functionDescriptor),
            flags,
            defaultMethod.getName(),
            defaultMethod.getDescriptor(),
            null,
            getThrownExceptions(functionDescriptor, typeMapper));

    // Only method annotations are copied to the $default method. Parameter annotations are not
    // copied until there are valid use cases;
    // enum constructors have two additional synthetic parameters which somewhat complicate this
    // task
    AnnotationCodegen.forMethod(mv, typeMapper)
        .genAnnotations(functionDescriptor, defaultMethod.getReturnType());

    if (state.getClassBuilderMode() == ClassBuilderMode.FULL) {
      if (this.owner instanceof MultifileClassFacadeContext) {
        mv.visitCode();
        generateFacadeDelegateMethodBody(
            mv, defaultMethod, (MultifileClassFacadeContext) this.owner);
        endVisit(mv, "default method delegation", getSourceFromDescriptor(functionDescriptor));
      } else {
        mv.visitCode();
        generateDefaultImplBody(
            owner, functionDescriptor, mv, loadStrategy, function, memberCodegen, defaultMethod);
        endVisit(mv, "default method", getSourceFromDescriptor(functionDescriptor));
      }
    }
  }
Exemple #3
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  private void generateMethodAnnotations(
      @NotNull FunctionDescriptor functionDescriptor, Method asmMethod, MethodVisitor mv) {
    AnnotationCodegen annotationCodegen = AnnotationCodegen.forMethod(mv, typeMapper);

    if (functionDescriptor instanceof PropertyAccessorDescriptor) {
      AnnotationUseSiteTarget target =
          functionDescriptor instanceof PropertySetterDescriptor
              ? PROPERTY_SETTER
              : PROPERTY_GETTER;
      annotationCodegen.genAnnotations(functionDescriptor, asmMethod.getReturnType(), target);
    } else {
      annotationCodegen.genAnnotations(functionDescriptor, asmMethod.getReturnType());
    }
  }
  private void generateBridge(@NotNull Method bridge, @NotNull Method delegate) {
    if (bridge.equals(delegate)) return;

    MethodVisitor mv =
        v.newMethod(
            OtherOrigin(element, funDescriptor),
            ACC_PUBLIC | ACC_BRIDGE,
            bridge.getName(),
            bridge.getDescriptor(),
            null,
            ArrayUtil.EMPTY_STRING_ARRAY);

    if (state.getClassBuilderMode() != ClassBuilderMode.FULL) return;

    mv.visitCode();

    InstructionAdapter iv = new InstructionAdapter(mv);
    ImplementationBodyCodegen.markLineNumberForSyntheticFunction(
        DescriptorUtils.getParentOfType(funDescriptor, ClassDescriptor.class), iv);

    iv.load(0, asmType);

    ReceiverParameterDescriptor receiver = funDescriptor.getExtensionReceiverParameter();
    int count = 1;
    if (receiver != null) {
      StackValue.local(count, bridge.getArgumentTypes()[count - 1])
          .put(typeMapper.mapType(receiver.getType()), iv);
      count++;
    }

    List<ValueParameterDescriptor> params = funDescriptor.getValueParameters();
    for (ValueParameterDescriptor param : params) {
      StackValue.local(count, bridge.getArgumentTypes()[count - 1])
          .put(typeMapper.mapType(param.getType()), iv);
      count++;
    }

    iv.invokevirtual(
        asmType.getInternalName(), delegate.getName(), delegate.getDescriptor(), false);
    StackValue.onStack(delegate.getReturnType()).put(bridge.getReturnType(), iv);

    iv.areturn(bridge.getReturnType());

    FunctionCodegen.endVisit(mv, "bridge", element);
  }
  @NotNull
  private Method generateConstructor(@NotNull Type superClassAsmType) {
    List<FieldInfo> args = calculateConstructorParameters(typeMapper, closure, asmType);

    Type[] argTypes = fieldListToTypeArray(args);

    Method constructor = new Method("<init>", Type.VOID_TYPE, argTypes);
    MethodVisitor mv =
        v.newMethod(
            OtherOrigin(element, funDescriptor),
            visibilityFlag,
            "<init>",
            constructor.getDescriptor(),
            null,
            ArrayUtil.EMPTY_STRING_ARRAY);
    if (state.getClassBuilderMode() == ClassBuilderMode.FULL) {
      mv.visitCode();
      InstructionAdapter iv = new InstructionAdapter(mv);

      int k = 1;
      for (FieldInfo fieldInfo : args) {
        k = genAssignInstanceFieldFromParam(fieldInfo, k, iv);
      }

      iv.load(0, superClassAsmType);

      if (superClassAsmType.equals(LAMBDA) || superClassAsmType.equals(FUNCTION_REFERENCE)) {
        int arity = funDescriptor.getValueParameters().size();
        if (funDescriptor.getExtensionReceiverParameter() != null) arity++;
        if (funDescriptor.getDispatchReceiverParameter() != null) arity++;
        iv.iconst(arity);
        iv.invokespecial(superClassAsmType.getInternalName(), "<init>", "(I)V", false);
      } else {
        iv.invokespecial(superClassAsmType.getInternalName(), "<init>", "()V", false);
      }

      iv.visitInsn(RETURN);

      FunctionCodegen.endVisit(iv, "constructor", element);
    }
    return constructor;
  }
Exemple #6
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 private static void genDefaultSuperCallCheckIfNeeded(
     @NotNull InstructionAdapter iv, @NotNull Method defaultMethod) {
   String defaultMethodName = defaultMethod.getName();
   if ("<init>".equals(defaultMethodName)) {
     return;
   }
   Label end = new Label();
   int handleIndex =
       (Type.getArgumentsAndReturnSizes(defaultMethod.getDescriptor()) >> 2)
           - 2; /*-1 for this, and -1 for handle*/
   iv.load(handleIndex, OBJECT_TYPE);
   iv.ifnull(end);
   AsmUtil.genThrow(
       iv,
       "java/lang/UnsupportedOperationException",
       "Super calls with default arguments not supported in this target, function: "
           + StringsKt.substringBeforeLast(
               defaultMethodName, JvmAbi.DEFAULT_PARAMS_IMPL_SUFFIX, defaultMethodName));
   iv.visitLabel(end);
 }
  private static void equipFunctionReferenceWithReflection(
      @NotNull InstructionAdapter v, @NotNull FunctionDescriptor target) {
    DeclarationDescriptor container = target.getContainingDeclaration();

    Type type;
    if (container instanceof PackageFragmentDescriptor) {
      type =
          target.getExtensionReceiverParameter() != null
              ? K_TOP_LEVEL_EXTENSION_FUNCTION
              : K_TOP_LEVEL_FUNCTION;
    } else if (container instanceof ClassDescriptor) {
      type = K_MEMBER_FUNCTION;
    } else {
      type = K_LOCAL_FUNCTION;
    }

    Method method = method("function", K_FUNCTION, FUNCTION_REFERENCE);
    v.invokestatic(REFLECTION, method.getName(), method.getDescriptor(), false);
    StackValue.coerce(K_FUNCTION, type, v);
  }
Exemple #8
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  @NotNull
  public Parameters addAllParameters(@NotNull FieldRemapper remapper) {
    Method asmMethod = typeMapper.mapAsmMethod(getFunctionDescriptor());
    ParametersBuilder builder =
        ParametersBuilder.initializeBuilderFrom(
            AsmTypes.OBJECT_TYPE, asmMethod.getDescriptor(), this);

    for (CapturedParamDesc info : getCapturedVars()) {
      CapturedParamInfo field =
          remapper.findField(
              new FieldInsnNode(0, info.getContainingLambdaName(), info.getFieldName(), ""));
      assert field != null
          : "Captured field not found: "
              + info.getContainingLambdaName()
              + "."
              + info.getFieldName();
      builder.addCapturedParam(field, info.getFieldName());
    }

    return builder.buildParameters();
  }
Exemple #9
0
  private static void generateDelegateToMethodBody(
      boolean isStatic,
      @NotNull MethodVisitor mv,
      @NotNull Method asmMethod,
      @NotNull String classToDelegateTo) {
    InstructionAdapter iv = new InstructionAdapter(mv);
    Type[] argTypes = asmMethod.getArgumentTypes();

    // The first line of some package file is written to the line number attribute of a static
    // delegate to allow to 'step into' it
    // This is similar to what javac does with bridge methods
    Label label = new Label();
    iv.visitLabel(label);
    iv.visitLineNumber(1, label);

    int k = isStatic ? 0 : 1;
    for (Type argType : argTypes) {
      iv.load(k, argType);
      k += argType.getSize();
    }
    iv.invokestatic(classToDelegateTo, asmMethod.getName(), asmMethod.getDescriptor(), false);
    iv.areturn(asmMethod.getReturnType());
  }
Exemple #10
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  @NotNull
  private SMAPAndMethodNode createMethodNode(boolean callDefault)
      throws ClassNotFoundException, IOException {
    JvmMethodSignature jvmSignature =
        typeMapper.mapSignature(functionDescriptor, context.getContextKind());

    Method asmMethod;
    if (callDefault) {
      asmMethod = typeMapper.mapDefaultMethod(functionDescriptor, context.getContextKind());
    } else {
      asmMethod = jvmSignature.getAsmMethod();
    }

    SMAPAndMethodNode nodeAndSMAP;
    if (functionDescriptor instanceof DeserializedSimpleFunctionDescriptor) {
      JetTypeMapper.ContainingClassesInfo containingClasses =
          typeMapper.getContainingClassesForDeserializedCallable(
              (DeserializedSimpleFunctionDescriptor) functionDescriptor);

      VirtualFile file =
          InlineCodegenUtil.getVirtualFileForCallable(containingClasses.getImplClassId(), state);
      nodeAndSMAP =
          InlineCodegenUtil.getMethodNode(
              file.contentsToByteArray(),
              asmMethod.getName(),
              asmMethod.getDescriptor(),
              containingClasses.getFacadeClassId());

      if (nodeAndSMAP == null) {
        throw new RuntimeException(
            "Couldn't obtain compiled function body for " + descriptorName(functionDescriptor));
      }
    } else {
      PsiElement element = DescriptorToSourceUtils.descriptorToDeclaration(functionDescriptor);

      if (element == null || !(element instanceof JetNamedFunction)) {
        throw new RuntimeException(
            "Couldn't find declaration for function " + descriptorName(functionDescriptor));
      }
      JetNamedFunction inliningFunction = (JetNamedFunction) element;

      MethodNode node =
          new MethodNode(
              InlineCodegenUtil.API,
              getMethodAsmFlags(functionDescriptor, context.getContextKind())
                  | (callDefault ? Opcodes.ACC_STATIC : 0),
              asmMethod.getName(),
              asmMethod.getDescriptor(),
              jvmSignature.getGenericsSignature(),
              null);

      // for maxLocals calculation
      MethodVisitor maxCalcAdapter = InlineCodegenUtil.wrapWithMaxLocalCalc(node);
      MethodContext methodContext = context.getParentContext().intoFunction(functionDescriptor);

      SMAP smap;
      if (callDefault) {
        Type implementationOwner = typeMapper.mapOwner(functionDescriptor);
        FakeMemberCodegen parentCodegen =
            new FakeMemberCodegen(
                codegen.getParentCodegen(),
                inliningFunction,
                (FieldOwnerContext) methodContext.getParentContext(),
                implementationOwner.getInternalName());
        FunctionCodegen.generateDefaultImplBody(
            methodContext,
            functionDescriptor,
            maxCalcAdapter,
            DefaultParameterValueLoader.DEFAULT,
            inliningFunction,
            parentCodegen);
        smap =
            createSMAPWithDefaultMapping(
                inliningFunction, parentCodegen.getOrCreateSourceMapper().getResultMappings());
      } else {
        smap =
            generateMethodBody(
                maxCalcAdapter,
                functionDescriptor,
                methodContext,
                inliningFunction,
                jvmSignature,
                false);
      }

      nodeAndSMAP = new SMAPAndMethodNode(node, smap);
      maxCalcAdapter.visitMaxs(-1, -1);
      maxCalcAdapter.visitEnd();
    }
    return nodeAndSMAP;
  }
Exemple #11
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  private void generateBridge(
      @Nullable PsiElement origin,
      @NotNull FunctionDescriptor descriptor,
      @NotNull Method bridge,
      @NotNull Method delegateTo,
      boolean isSpecialBridge,
      boolean isStubDeclarationWithDelegationToSuper) {
    boolean isSpecialOrDelegationToSuper =
        isSpecialBridge || isStubDeclarationWithDelegationToSuper;
    int flags =
        ACC_PUBLIC
            | ACC_BRIDGE
            | (!isSpecialOrDelegationToSuper ? ACC_SYNTHETIC : 0)
            | (isSpecialBridge ? ACC_FINAL : 0); // TODO.

    MethodVisitor mv =
        v.newMethod(
            JvmDeclarationOriginKt.Bridge(descriptor, origin),
            flags,
            bridge.getName(),
            bridge.getDescriptor(),
            null,
            null);
    if (state.getClassBuilderMode() != ClassBuilderMode.FULL) return;

    mv.visitCode();

    Type[] argTypes = bridge.getArgumentTypes();
    Type[] originalArgTypes = delegateTo.getArgumentTypes();

    InstructionAdapter iv = new InstructionAdapter(mv);
    MemberCodegen.markLineNumberForDescriptor(owner.getThisDescriptor(), iv);

    if (delegateTo.getArgumentTypes().length == 1 && isSpecialBridge) {
      generateTypeCheckBarrierIfNeeded(
          iv, descriptor, bridge.getReturnType(), delegateTo.getArgumentTypes()[0]);
    }

    iv.load(0, OBJECT_TYPE);
    for (int i = 0, reg = 1; i < argTypes.length; i++) {
      StackValue.local(reg, argTypes[i]).put(originalArgTypes[i], iv);
      //noinspection AssignmentToForLoopParameter
      reg += argTypes[i].getSize();
    }

    if (isStubDeclarationWithDelegationToSuper) {
      ClassDescriptor parentClass =
          getSuperClassDescriptor((ClassDescriptor) descriptor.getContainingDeclaration());
      assert parentClass != null;
      String parentInternalName = typeMapper.mapClass(parentClass).getInternalName();
      iv.invokespecial(parentInternalName, delegateTo.getName(), delegateTo.getDescriptor());
    } else {
      iv.invokevirtual(v.getThisName(), delegateTo.getName(), delegateTo.getDescriptor());
    }

    StackValue.coerce(delegateTo.getReturnType(), bridge.getReturnType(), iv);
    iv.areturn(bridge.getReturnType());

    endVisit(mv, "bridge method", origin);
  }
Exemple #12
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  public void generateBridges(@NotNull FunctionDescriptor descriptor) {
    if (descriptor instanceof ConstructorDescriptor) return;
    if (owner.getContextKind() == OwnerKind.DEFAULT_IMPLS) return;
    if (isInterface(descriptor.getContainingDeclaration())) return;

    // equals(Any?), hashCode(), toString() never need bridges
    if (isMethodOfAny(descriptor)) return;

    // If the function doesn't have a physical declaration among super-functions, it's a SAM adapter
    // or alike and doesn't need bridges
    if (CallResolverUtilKt.isOrOverridesSynthesized(descriptor)) return;

    boolean isSpecial =
        SpecialBuiltinMembers.getOverriddenBuiltinReflectingJvmDescriptor(descriptor) != null;

    Set<Bridge<Method>> bridgesToGenerate;
    if (!isSpecial) {
      bridgesToGenerate =
          ImplKt.generateBridgesForFunctionDescriptor(descriptor, getSignatureMapper(typeMapper));
      if (!bridgesToGenerate.isEmpty()) {
        PsiElement origin =
            descriptor.getKind() == DECLARATION ? getSourceFromDescriptor(descriptor) : null;
        boolean isSpecialBridge =
            BuiltinMethodsWithSpecialGenericSignature
                    .getOverriddenBuiltinFunctionWithErasedValueParametersInJava(descriptor)
                != null;

        for (Bridge<Method> bridge : bridgesToGenerate) {
          generateBridge(
              origin, descriptor, bridge.getFrom(), bridge.getTo(), isSpecialBridge, false);
        }
      }
    } else {
      Set<BridgeForBuiltinSpecial<Method>> specials =
          BuiltinSpecialBridgesUtil.generateBridgesForBuiltinSpecial(
              descriptor, getSignatureMapper(typeMapper));

      if (!specials.isEmpty()) {
        PsiElement origin =
            descriptor.getKind() == DECLARATION ? getSourceFromDescriptor(descriptor) : null;
        for (BridgeForBuiltinSpecial<Method> bridge : specials) {
          generateBridge(
              origin,
              descriptor,
              bridge.getFrom(),
              bridge.getTo(),
              bridge.isSpecial(),
              bridge.isDelegateToSuper());
        }
      }

      if (!descriptor.getKind().isReal()
          && isAbstractMethod(descriptor, OwnerKind.IMPLEMENTATION)) {
        CallableDescriptor overridden =
            SpecialBuiltinMembers.getOverriddenBuiltinReflectingJvmDescriptor(descriptor);
        assert overridden != null;

        Method method = typeMapper.mapSignature(descriptor).getAsmMethod();
        int flags = ACC_ABSTRACT | getVisibilityAccessFlag(descriptor);
        v.newMethod(
            JvmDeclarationOriginKt.OtherOrigin(overridden),
            flags,
            method.getName(),
            method.getDescriptor(),
            null,
            null);
      }
    }
  }
Exemple #13
0
  public void generateMethod(
      @NotNull JvmDeclarationOrigin origin,
      @NotNull FunctionDescriptor functionDescriptor,
      @NotNull MethodContext methodContext,
      @NotNull FunctionGenerationStrategy strategy) {
    OwnerKind contextKind = methodContext.getContextKind();
    if (isInterface(functionDescriptor.getContainingDeclaration())
        && functionDescriptor.getVisibility() == Visibilities.PRIVATE
        && contextKind != OwnerKind.DEFAULT_IMPLS) {
      return;
    }

    JvmMethodSignature jvmSignature = typeMapper.mapSignature(functionDescriptor, contextKind);
    Method asmMethod = jvmSignature.getAsmMethod();

    int flags = getMethodAsmFlags(functionDescriptor, contextKind);
    boolean isNative = NativeKt.hasNativeAnnotation(functionDescriptor);

    if (isNative && owner instanceof MultifileClassFacadeContext) {
      // Native methods are only defined in facades and do not need package part implementations
      return;
    }
    MethodVisitor mv =
        v.newMethod(
            origin,
            flags,
            asmMethod.getName(),
            asmMethod.getDescriptor(),
            jvmSignature.getGenericsSignature(),
            getThrownExceptions(functionDescriptor, typeMapper));

    if (CodegenContextUtil.isImplClassOwner(owner)) {
      v.getSerializationBindings().put(METHOD_FOR_FUNCTION, functionDescriptor, asmMethod);
    }

    generateMethodAnnotations(functionDescriptor, asmMethod, mv);

    generateParameterAnnotations(
        functionDescriptor, mv, typeMapper.mapSignature(functionDescriptor));

    generateBridges(functionDescriptor);

    boolean staticInCompanionObject =
        AnnotationUtilKt.isPlatformStaticInCompanionObject(functionDescriptor);
    if (staticInCompanionObject) {
      ImplementationBodyCodegen parentBodyCodegen =
          (ImplementationBodyCodegen) memberCodegen.getParentCodegen();
      parentBodyCodegen.addAdditionalTask(
          new JvmStaticGenerator(functionDescriptor, origin, state));
    }

    if (state.getClassBuilderMode() == ClassBuilderMode.LIGHT_CLASSES
        || isAbstractMethod(functionDescriptor, contextKind)) {
      generateLocalVariableTable(
          mv,
          jvmSignature,
          functionDescriptor,
          getThisTypeForFunction(functionDescriptor, methodContext, typeMapper),
          new Label(),
          new Label(),
          contextKind);

      mv.visitEnd();
      return;
    }

    if (!isNative) {
      generateMethodBody(
          mv, functionDescriptor, methodContext, jvmSignature, strategy, memberCodegen);
    } else if (staticInCompanionObject) {
      // native @JvmStatic foo() in companion object should delegate to the static native function
      // moved to the outer class
      mv.visitCode();
      FunctionDescriptor staticFunctionDescriptor =
          JvmStaticGenerator.createStaticFunctionDescriptor(functionDescriptor);
      JvmMethodSignature jvmMethodSignature =
          typeMapper.mapSignature(
              memberCodegen.getContext().accessibleDescriptor(staticFunctionDescriptor, null));
      Type owningType =
          typeMapper.mapClass(
              (ClassifierDescriptor) staticFunctionDescriptor.getContainingDeclaration());
      generateDelegateToMethodBody(
          false, mv, jvmMethodSignature.getAsmMethod(), owningType.getInternalName());
    }

    endVisit(mv, null, origin.getElement());
  }
/**
 * @author yole
 * @noinspection HardCodedStringLiteral
 */
public class FontPropertyCodeGenerator extends PropertyCodeGenerator {
  private static final Type ourFontType = Type.getType(Font.class);
  private static final Type ourUIManagerType = Type.getType("Ljavax/swing/UIManager;");
  private static final Type ourObjectType = Type.getType(Object.class);
  private static final Type ourStringType = Type.getType(String.class);

  private static final Method ourInitMethod =
      Method.getMethod("void <init>(java.lang.String,int,int)");
  private static final Method ourUIManagerGetFontMethod =
      new Method("getFont", ourFontType, new Type[] {ourObjectType});
  private static final Method ourGetNameMethod = new Method("getName", ourStringType, new Type[0]);
  private static final Method ourGetSizeMethod = new Method("getSize", Type.INT_TYPE, new Type[0]);
  private static final Method ourGetStyleMethod =
      new Method("getStyle", Type.INT_TYPE, new Type[0]);

  public boolean generateCustomSetValue(
      final LwComponent lwComponent,
      final InstrumentationClassFinder.PseudoClass componentClass,
      final LwIntrospectedProperty property,
      final GeneratorAdapter generator,
      final int componentLocal,
      final String formClassName) {
    FontDescriptor descriptor = (FontDescriptor) property.getPropertyValue(lwComponent);
    if (descriptor.isFixedFont() && !descriptor.isFullyDefinedFont()) {
      generator.loadLocal(componentLocal);
      generatePushFont(
          generator, componentLocal, lwComponent, descriptor, property.getReadMethodName());

      Method setFontMethod =
          new Method(property.getWriteMethodName(), Type.VOID_TYPE, new Type[] {ourFontType});
      Type componentType = AsmCodeGenerator.typeFromClassName(lwComponent.getComponentClassName());
      generator.invokeVirtual(componentType, setFontMethod);
      return true;
    }
    return false;
  }

  public static void generatePushFont(
      final GeneratorAdapter generator,
      final int componentLocal,
      final LwComponent lwComponent,
      final FontDescriptor descriptor,
      final String readMethodName) {
    final int fontLocal = generator.newLocal(ourFontType);

    generator.loadLocal(componentLocal);
    Type componentType = AsmCodeGenerator.typeFromClassName(lwComponent.getComponentClassName());
    Method getFontMethod = new Method(readMethodName, ourFontType, new Type[0]);
    generator.invokeVirtual(componentType, getFontMethod);
    generator.storeLocal(fontLocal);

    generator.newInstance(ourFontType);
    generator.dup();
    if (descriptor.getFontName() != null) {
      generator.push(descriptor.getFontName());
    } else {
      generator.loadLocal(fontLocal);
      generator.invokeVirtual(ourFontType, ourGetNameMethod);
    }

    if (descriptor.getFontStyle() >= 0) {
      generator.push(descriptor.getFontStyle());
    } else {
      generator.loadLocal(fontLocal);
      generator.invokeVirtual(ourFontType, ourGetStyleMethod);
    }

    if (descriptor.getFontSize() >= 0) {
      generator.push(descriptor.getFontSize());
    } else {
      generator.loadLocal(fontLocal);
      generator.invokeVirtual(ourFontType, ourGetSizeMethod);
    }
    generator.invokeConstructor(ourFontType, ourInitMethod);
  }

  public void generatePushValue(final GeneratorAdapter generator, final Object value) {
    FontDescriptor descriptor = (FontDescriptor) value;
    if (descriptor.isFixedFont()) {
      if (!descriptor.isFullyDefinedFont())
        throw new IllegalStateException("Unexpected font state");
      generator.newInstance(ourFontType);
      generator.dup();
      generator.push(descriptor.getFontName());
      generator.push(descriptor.getFontStyle());
      generator.push(descriptor.getFontSize());
      generator.invokeConstructor(ourFontType, ourInitMethod);
    } else if (descriptor.getSwingFont() != null) {
      generator.push(descriptor.getSwingFont());
      generator.invokeStatic(ourUIManagerType, ourUIManagerGetFontMethod);
    } else {
      throw new IllegalStateException("Unknown font type");
    }
  }
}