Exemple #1
0
  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);
  }
  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);
  }