javax.lang.model.type.ArrayType#getComponentType ( )源码实例Demo

public Name createExternalDomainName(TypeMirror externalDomainType) {
  assertNotNull(externalDomainType);
  ArrayType arrayType = ctx.getMoreTypes().toArrayType(externalDomainType);
  if (arrayType != null) {
    TypeMirror componentType = arrayType.getComponentType();
    TypeElement componentElement = ctx.getMoreTypes().toTypeElement(componentType);
    if (componentElement == null) {
      throw new AptIllegalStateException(componentType.toString());
    }
    Name binaryName = ctx.getMoreElements().getBinaryName(componentElement);
    return ctx.getMoreElements().getName(binaryName + EXTERNAL_DOMAIN_TYPE_ARRAY_SUFFIX);
  }
  TypeElement domainElement = ctx.getMoreTypes().toTypeElement(externalDomainType);
  if (domainElement == null) {
    throw new AptIllegalStateException(externalDomainType.toString());
  }
  return ctx.getMoreElements().getBinaryName(domainElement);
}
 

public TypeMirror getComponentType(TypeMirror t) {
    if (isArray(t)) {
        ArrayType at = (ArrayType) t;
        return at.getComponentType();
    }

    throw new IllegalArgumentException();
}
 

public boolean isArrayButNotByteArray(TypeMirror t) {
    if(!isArray(t))
        return false;

    ArrayType at = (ArrayType) t;
    TypeMirror ct = at.getComponentType();

    return !ct.equals(primitiveByte);
}
 

private MethodInvocation newInitializedArrayInvocation(
    ArrayType arrayType, List<Expression> elements, boolean retainedResult) {
  TypeMirror componentType = arrayType.getComponentType();
  TypeElement iosArrayElement = typeUtil.getIosArray(componentType);

  GeneratedExecutableElement methodElement = GeneratedExecutableElement.newMethodWithSelector(
      getInitializeSelector(componentType, retainedResult), iosArrayElement.asType(),
      iosArrayElement)
      .addModifiers(Modifier.PUBLIC, Modifier.STATIC);
  methodElement.addParameter(GeneratedVariableElement.newParameter(
      "values", new PointerType(componentType), methodElement));
  methodElement.addParameter(GeneratedVariableElement.newParameter(
      "count", typeUtil.getInt(), methodElement));
  if (!componentType.getKind().isPrimitive()) {
    methodElement.addParameter(GeneratedVariableElement.newParameter(
        "type", TypeUtil.IOS_CLASS.asType(), methodElement));
  }
  MethodInvocation invocation = new MethodInvocation(
      new ExecutablePair(methodElement), arrayType, new SimpleName(iosArrayElement));

  // Create the array initializer and add it as the first parameter.
  ArrayInitializer arrayInit = new ArrayInitializer(arrayType);
  for (Expression element : elements) {
    arrayInit.addExpression(element.copy());
  }
  invocation.addArgument(arrayInit);

  // Add the array size parameter.
  invocation.addArgument(
      NumberLiteral.newIntLiteral(arrayInit.getExpressions().size(), typeUtil));

  // Add the type argument for object arrays.
  if (!componentType.getKind().isPrimitive()) {
    invocation.addArgument(new TypeLiteral(componentType, typeUtil));
  }

  return invocation;
}
 

public boolean isArrayButNotByteArray(TypeMirror t) {
    if(!isArray(t))
        return false;

    ArrayType at = (ArrayType) t;
    TypeMirror ct = at.getComponentType();

    return !ct.equals(primitiveByte);
}
 

public TypeMirror getComponentType(TypeMirror t) {
    if (isArray(t)) {
        ArrayType at = (ArrayType) t;
        return at.getComponentType();
    }

    throw new IllegalArgumentException();
}
 

/**
 * Returns true if the method is a main method
 * @param method to be checked
 * @return true when the method is a main method
 */
public static boolean isMainMethod (final ExecutableElement method) {
    if (!"main".contentEquals(method.getSimpleName())) {                //NOI18N
        return false;
    }
    long flags = ((Symbol.MethodSymbol)method).flags();                 //faster
    if (((flags & Flags.PUBLIC) == 0) || ((flags & Flags.STATIC) == 0)) {
        return false;
    }
    if (method.getReturnType().getKind() != TypeKind.VOID) {
        return false;
    }
    List<? extends VariableElement> params = method.getParameters();
    if (params.size() != 1) {
        return false;
    }
    TypeMirror param = params.get(0).asType();
    if (param.getKind() != TypeKind.ARRAY) {
        return false;
    }
    ArrayType array = (ArrayType) param;
    TypeMirror compound = array.getComponentType();
    if (compound.getKind() != TypeKind.DECLARED) {
        return false;
    }
    return "java.lang.String".contentEquals(((TypeElement)((DeclaredType)compound).asElement()).getQualifiedName());   //NOI18N
}
 

public boolean isArrayButNotByteArray(TypeMirror t) {
    if(!isArray(t))
        return false;

    ArrayType at = (ArrayType) t;
    TypeMirror ct = at.getComponentType();

    return !ct.equals(primitiveByte);
}
 

public TypeMirror getComponentType(TypeMirror t) {
    if (isArray(t)) {
        ArrayType at = (ArrayType) t;
        return at.getComponentType();
    }

    throw new IllegalArgumentException();
}
 

public boolean isArrayButNotByteArray(TypeMirror t) {
    if(!isArray(t))
        return false;

    ArrayType at = (ArrayType) t;
    TypeMirror ct = at.getComponentType();

    return !ct.equals(primitiveByte);
}
 

public boolean isArrayButNotByteArray(TypeMirror t) {
    if(!isArray(t))
        return false;

    ArrayType at = (ArrayType) t;
    TypeMirror ct = at.getComponentType();

    return !ct.equals(primitiveByte);
}
 

private MethodInvocation newSingleDimensionArrayInvocation(
    ArrayType arrayType, Expression dimensionExpr, boolean retainedResult) {
  TypeMirror componentType = arrayType.getComponentType();
  TypeElement iosArrayElement = typeUtil.getIosArray(componentType);
  boolean isPrimitive = componentType.getKind().isPrimitive();

  String selector = (retainedResult ? "newArray" : "array") + "WithLength:"
      + (isPrimitive ? "" : "type:");
  GeneratedExecutableElement methodElement = GeneratedExecutableElement.newMethodWithSelector(
      selector, iosArrayElement.asType(), iosArrayElement)
      .addModifiers(Modifier.PUBLIC, Modifier.STATIC);
  methodElement.addParameter(GeneratedVariableElement.newParameter(
      "length", typeUtil.getInt(), methodElement));
  if (!isPrimitive) {
    methodElement.addParameter(GeneratedVariableElement.newParameter(
        "type", TypeUtil.IOS_CLASS.asType(), methodElement));
  }
  MethodInvocation invocation = new MethodInvocation(
      new ExecutablePair(methodElement), arrayType, new SimpleName(iosArrayElement));

  // Add the array length argument.
  invocation.addArgument(dimensionExpr.copy());

  // Add the type argument for object arrays.
  if (!isPrimitive) {
    invocation.addArgument(new TypeLiteral(componentType, typeUtil));
  }

  return invocation;
}
 

public boolean isArrayButNotByteArray(TypeMirror t) {
    if(!isArray(t))
        return false;

    ArrayType at = (ArrayType) t;
    TypeMirror ct = at.getComponentType();

    return !ct.equals(primitiveByte);
}
 

public TypeMirror getComponentType(TypeMirror t) {
    if (isArray(t)) {
        ArrayType at = (ArrayType) t;
        return at.getComponentType();
    }

    throw new IllegalArgumentException();
}
 

private boolean needToCastArrayType(ArrayType type) throws InvalidTypeException {
    TypeMirror componentType = type.getComponentType();
    if (isPrimitive(componentType)) {
        return false;
    }
    try {
        return needToCastAggregateType(componentType);
    } catch (InvalidTypeException e) {
        throw new InvalidTypeException(type);
    }
}
 

public boolean isArrayButNotByteArray(TypeMirror t) {
    if(!isArray(t))
        return false;

    ArrayType at = (ArrayType) t;
    TypeMirror ct = at.getComponentType();

    return !ct.equals(primitiveByte);
}
 

public TypeMirror getComponentType(TypeMirror t) {
    if (isArray(t)) {
        ArrayType at = (ArrayType) t;
        return at.getComponentType();
    }

    throw new IllegalArgumentException();
}
 

private void handleArrayIteration(EnhancedForStatement node) {
  Expression expression = node.getExpression();
  ArrayType expressionType = (ArrayType) expression.getTypeMirror();
  VariableElement loopVariable = node.getParameter().getVariableElement();
  TypeMirror componentType = expressionType.getComponentType();
  TypeElement iosArrayType = typeUtil.getIosArray(componentType);
  TypeMirror bufferType = new PointerType(componentType);
  VariableElement arrayVariable = GeneratedVariableElement.newLocalVar(
      "a__", expressionType, null);
  VariableElement bufferVariable = GeneratedVariableElement.newLocalVar("b__", bufferType, null)
      .setTypeQualifiers("const*");
  VariableElement endVariable = GeneratedVariableElement.newLocalVar("e__", bufferType, null)
      .setTypeQualifiers("const*");
  VariableElement bufferField = GeneratedVariableElement.newField(
      "buffer", bufferType, iosArrayType)
      .addModifiers(Modifier.PUBLIC);
  VariableElement sizeField = GeneratedVariableElement.newField(
      "size", typeUtil.getInt(), iosArrayType)
      .addModifiers(Modifier.PUBLIC);

  VariableDeclarationStatement arrayDecl =
      new VariableDeclarationStatement(arrayVariable, TreeUtil.remove(expression));
  FieldAccess bufferAccess = new FieldAccess(bufferField, new SimpleName(arrayVariable));
  VariableDeclarationStatement bufferDecl =
      new VariableDeclarationStatement(bufferVariable, bufferAccess);
  InfixExpression endInit = new InfixExpression(
      bufferType, InfixExpression.Operator.PLUS, new SimpleName(bufferVariable),
      new FieldAccess(sizeField, new SimpleName(arrayVariable)));
  VariableDeclarationStatement endDecl = new VariableDeclarationStatement(endVariable, endInit);

  WhileStatement loop = new WhileStatement();
  loop.setExpression(new InfixExpression(
      typeUtil.getBoolean(), InfixExpression.Operator.LESS, new SimpleName(bufferVariable),
      new SimpleName(endVariable)));
  Block newLoopBody = makeBlock(TreeUtil.remove(node.getBody()));
  loop.setBody(newLoopBody);
  newLoopBody.addStatement(0, new VariableDeclarationStatement(
      loopVariable, new PrefixExpression(
          componentType, PrefixExpression.Operator.DEREFERENCE,
          new PostfixExpression(bufferVariable, PostfixExpression.Operator.INCREMENT))));

  Block block = new Block();
  List<Statement> stmts = block.getStatements();
  stmts.add(arrayDecl);
  stmts.add(bufferDecl);
  stmts.add(endDecl);
  stmts.add(loop);
  replaceLoop(node, block, loop);
}
 

private void doDomainType(
    TypeElement converterElement, TypeMirror domainType, ExternalDomainMeta meta) {
  meta.setType(domainType);

  ArrayType arrayType = ctx.getMoreTypes().toArrayType(domainType);
  if (arrayType != null) {
    TypeMirror componentType = arrayType.getComponentType();
    if (componentType.getKind() == TypeKind.ARRAY) {
      throw new AptException(Message.DOMA4447, converterElement, new Object[] {});
    }
    TypeElement componentElement = ctx.getMoreTypes().toTypeElement(componentType);
    if (componentElement == null) {
      throw new AptIllegalStateException(componentType.toString());
    }
    if (!componentElement.getTypeParameters().isEmpty()) {
      throw new AptException(Message.DOMA4448, converterElement, new Object[] {});
    }
    return;
  }

  TypeElement domainElement = ctx.getMoreTypes().toTypeElement(domainType);
  if (domainElement == null) {
    throw new AptIllegalStateException(domainType.toString());
  }
  if (domainElement.getNestingKind().isNested()) {
    validateEnclosingElement(domainElement);
  }
  PackageElement pkgElement = ctx.getMoreElements().getPackageOf(domainElement);
  if (pkgElement.isUnnamed()) {
    throw new AptException(
        Message.DOMA4197, converterElement, new Object[] {domainElement.getQualifiedName()});
  }
  DeclaredType declaredType = ctx.getMoreTypes().toDeclaredType(domainType);
  if (declaredType == null) {
    throw new AptIllegalStateException(domainType.toString());
  }
  for (TypeMirror typeArg : declaredType.getTypeArguments()) {
    if (typeArg.getKind() != TypeKind.WILDCARD) {
      throw new AptException(
          Message.DOMA4203, converterElement, new Object[] {domainElement.getQualifiedName()});
    }
  }
  meta.setTypeElement(domainElement);
  TypeParametersDef typeParametersDef = ctx.getMoreElements().getTypeParametersDef(domainElement);
  meta.setTypeParametersDef(typeParametersDef);
}
 

private void parseBindViews(Element element, Map<TypeElement, BindingSet.Builder> builderMap,
    Set<TypeElement> erasedTargetNames) {
  TypeElement enclosingElement = (TypeElement) element.getEnclosingElement();

  // Start by verifying common generated code restrictions.
  boolean hasError = isInaccessibleViaGeneratedCode(BindViews.class, "fields", element)
      || isBindingInWrongPackage(BindViews.class, element);

  // Verify that the type is a List or an array.
  TypeMirror elementType = element.asType();
  String erasedType = doubleErasure(elementType);
  TypeMirror viewType = null;
  FieldCollectionViewBinding.Kind kind = null;
  if (elementType.getKind() == TypeKind.ARRAY) {
    ArrayType arrayType = (ArrayType) elementType;
    viewType = arrayType.getComponentType();
    kind = FieldCollectionViewBinding.Kind.ARRAY;
  } else if (LIST_TYPE.equals(erasedType)) {
    DeclaredType declaredType = (DeclaredType) elementType;
    List<? extends TypeMirror> typeArguments = declaredType.getTypeArguments();
    if (typeArguments.size() != 1) {
      error(element, "@%s List must have a generic component. (%s.%s)",
          BindViews.class.getSimpleName(), enclosingElement.getQualifiedName(),
          element.getSimpleName());
      hasError = true;
    } else {
      viewType = typeArguments.get(0);
    }
    kind = FieldCollectionViewBinding.Kind.LIST;
  } else {
    error(element, "@%s must be a List or array. (%s.%s)", BindViews.class.getSimpleName(),
        enclosingElement.getQualifiedName(), element.getSimpleName());
    hasError = true;
  }
  if (viewType != null && viewType.getKind() == TypeKind.TYPEVAR) {
    TypeVariable typeVariable = (TypeVariable) viewType;
    viewType = typeVariable.getUpperBound();
  }

  // Verify that the target type extends from View.
  if (viewType != null && !isSubtypeOfType(viewType, VIEW_TYPE) && !isInterface(viewType)) {
    if (viewType.getKind() == TypeKind.ERROR) {
      note(element, "@%s List or array with unresolved type (%s) "
              + "must elsewhere be generated as a View or interface. (%s.%s)",
          BindViews.class.getSimpleName(), viewType, enclosingElement.getQualifiedName(),
          element.getSimpleName());
    } else {
      error(element, "@%s List or array type must extend from View or be an interface. (%s.%s)",
          BindViews.class.getSimpleName(), enclosingElement.getQualifiedName(),
          element.getSimpleName());
      hasError = true;
    }
  }

  // Assemble information on the field.
  String name = element.getSimpleName().toString();
  int[] ids = element.getAnnotation(BindViews.class).value();
  if (ids.length == 0) {
    error(element, "@%s must specify at least one ID. (%s.%s)", BindViews.class.getSimpleName(),
        enclosingElement.getQualifiedName(), element.getSimpleName());
    hasError = true;
  }

  Integer duplicateId = findDuplicate(ids);
  if (duplicateId != null) {
    error(element, "@%s annotation contains duplicate ID %d. (%s.%s)",
        BindViews.class.getSimpleName(), duplicateId, enclosingElement.getQualifiedName(),
        element.getSimpleName());
    hasError = true;
  }

  if (hasError) {
    return;
  }

  TypeName type = TypeName.get(requireNonNull(viewType));
  boolean required = isFieldRequired(element);

  BindingSet.Builder builder = getOrCreateBindingBuilder(builderMap, enclosingElement);
  builder.addFieldCollection(new FieldCollectionViewBinding(name, type, requireNonNull(kind),
      new ArrayList<>(elementToIds(element, BindViews.class, ids).values()), required));

  erasedTargetNames.add(enclosingElement);
}