Examples of com.google.dart.engine.element.Element

com.google.dart.engine.element.Element
The interface {@code Element} defines the behavior common to all of the elements in the elementmodel. Generally speaking, the element model is a semantic model of the program that represents things that are declared with a name and hence can be referenced elsewhere in the code.
There are two exceptions to the general case. First, there are elements in the element model that are created for the convenience of various kinds of analysis but that do not have any corresponding declaration within the source code. Such elements are marked as being synthetic. Examples of synthetic elements include
- default constructors in classes that do not define any explicit constructors,
- getters and setters that are induced by explicit field declarations,
- fields that are induced by explicit declarations of getters and setters, and
- functions representing the initialization expression for a variable.
Second, there are elements in the element model that do not have a name. These correspond to unnamed functions and exist in order to more accurately represent the semantic structure of the program. @coverage dart.engine.element


  /**
   * Checks if given {@link Annotation} is an annotation with required name.
   */
  private boolean isAngularAnnotation(Annotation annotation, String name) {
    Element element = annotation.getElement();
    if (element instanceof ConstructorElement) {
      ConstructorElement constructorElement = (ConstructorElement) element;
      if (!constructorElement.getReturnType().getDisplayName().equals(name)) {
        return false;
      }

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      }


      private boolean isViewFactory(Expression target) {
        if (target instanceof SimpleIdentifier) {
          SimpleIdentifier identifier = (SimpleIdentifier) target;
          Element element = identifier.getStaticElement();
          if (element instanceof VariableElement) {
            VariableElement variable = (VariableElement) element;
            Type type = variable.getType();
            if (type instanceof InterfaceType) {
              InterfaceType interfaceType = (InterfaceType) type;

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            // Initialize prefixElementMap
            //
            if (importDirective.getAsToken() != null) {
              SimpleIdentifier prefixIdentifier = importDirective.getPrefix();
              if (prefixIdentifier != null) {
                Element element = prefixIdentifier.getStaticElement();
                if (element instanceof PrefixElement) {
                  PrefixElement prefixElementKey = (PrefixElement) element;
                  ArrayList<ImportDirective> list = prefixElementMap.get(prefixElementKey);
                  if (list == null) {
                    list = new ArrayList<ImportDirective>(1);

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    }
    // If the prefixed identifier references some A.B, where A is a library prefix, then we can
    // lookup the associated ImportDirective in prefixElementMap and remove it from the
    // unusedImports list.
    SimpleIdentifier prefixIdentifier = node.getPrefix();
    Element element = prefixIdentifier.getStaticElement();
    if (element instanceof PrefixElement) {
      ArrayList<ImportDirective> importDirectives = prefixElementMap.get(element);
      if (importDirectives != null) {
        for (ImportDirective importDirective : importDirectives) {
          unusedImports.remove(importDirective);

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  }


  @Override
  @SuppressWarnings("unchecked")
  public <E extends Element> E getAncestor(Class<E> elementClass) {
    Element ancestor = enclosingElement;
    while (ancestor != null && !elementClass.isInstance(ancestor)) {
      ancestor = ancestor.getEnclosingElement();
    }
    return (E) ancestor;
  }

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  public int hashCode() {
    // TODO: We might want to re-visit this optimization in the future.
    // We cache the hash code value as this is a very frequently called method.
    if (cachedHashCode == 0) {
      int hashIdentifier = getIdentifier().hashCode();
      Element enclosing = getEnclosingElement();
      if (enclosing != null) {
        cachedHashCode = hashIdentifier + enclosing.hashCode();
      } else {
        cachedHashCode = hashIdentifier;
      }
    }
    return cachedHashCode;

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        // the is not case
        errorReporter.reportErrorForNode(HintCode.UNNECESSARY_TYPE_CHECK_FALSE, node);
      }
      return true;
    }
    Element rhsElement = rhsType.getElement();
    LibraryElement libraryElement = rhsElement != null ? rhsElement.getLibrary() : null;
    if (libraryElement != null && libraryElement.isDartCore()) {
      // if x is Object or null is Null
      if (rhsType.isObject()
          || (expression instanceof NullLiteral && rhsNameStr.equals(NULL_TYPE_NAME))) {
        if (node.getNotOperator() == null) {

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   * 
   * @param expression some conditional expression
   * @return {@code true} if and only if the passed expression is resolved to a constant variable
   */
  private boolean isDebugConstant(Expression expression) {
    Element element = null;
    if (expression instanceof Identifier) {
      Identifier identifier = (Identifier) expression;
      element = identifier.getStaticElement();
    } else if (expression instanceof PropertyAccess) {
      PropertyAccess propertyAccess = (PropertyAccess) expression;

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    assertBoolNumStringOrNull(rightOperand);
    if (element == null) {
      return BoolState.UNKNOWN_VALUE;
    }
    if (rightOperand instanceof TypeState) {
      Element rightElement = ((TypeState) rightOperand).element;
      if (rightElement == null) {
        return BoolState.UNKNOWN_VALUE;
      }
      return BoolState.from(element.equals(rightElement));
    } else if (rightOperand instanceof DynamicState) {

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    // prepare environment
    AstNode parent = prefixNode.getParent();
    CompilationUnit unit = prefixNode.getAncestor(CompilationUnit.class);
    LibraryElement libraryElement = unit.getElement().getLibrary();
    // prepare used element
    Element usedElement = null;
    if (parent instanceof PrefixedIdentifier) {
      PrefixedIdentifier prefixed = (PrefixedIdentifier) parent;
      if (prefixed.getPrefix() == prefixNode) {
        usedElement = prefixed.getStaticElement();
        info.periodEnd = prefixed.getPeriod().getEnd();

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