Examples of com.google.dart.engine.ast.VariableDeclaration

com.google.dart.engine.ast.VariableDeclaration
Instances of the class {@code VariableDeclaration} represent an identifier that has an initialvalue associated with it. Instances of this class are always children of the class {@link VariableDeclarationList}.
```
 variableDeclaration ::= {@link SimpleIdentifier identifier} ('=' {@link Expression initialValue})? 
```
@coverage dart.engine.ast

  public void computeValues() {
    variableDeclarationMap = constantFinder.getVariableMap();
    constructorDeclarationMap = constantFinder.getConstructorMap();
    constructorInvocations = constantFinder.getConstructorInvocations();
    for (Map.Entry<VariableElement, VariableDeclaration> entry : variableDeclarationMap.entrySet()) {
      VariableDeclaration declaration = entry.getValue();
      ReferenceFinder referenceFinder = new ReferenceFinder(
          declaration,
          referenceGraph,
          variableDeclarationMap,
          constructorDeclarationMap);
      referenceGraph.addNode(declaration);
      declaration.getInitializer().accept(referenceFinder);
    }
    for (Entry<ConstructorElement, ConstructorDeclaration> entry : constructorDeclarationMap.entrySet()) {
      ConstructorDeclaration declaration = entry.getValue();
      ReferenceFinder referenceFinder = new ReferenceFinder(
          declaration,
          referenceGraph,
          variableDeclarationMap,
          constructorDeclarationMap);
      referenceGraph.addNode(declaration);
      boolean superInvocationFound = false;
      NodeList<ConstructorInitializer> initializers = declaration.getInitializers();
      for (ConstructorInitializer initializer : initializers) {
        if (initializer instanceof SuperConstructorInvocation) {
          superInvocationFound = true;
        }
        initializer.accept(referenceFinder);
      }
      if (!superInvocationFound) {
        // No explicit superconstructor invocation found, so we need to manually insert
        // a reference to the implicit superconstructor.
        InterfaceType superclass = ((InterfaceType) entry.getKey().getReturnType()).getSuperclass();
        if (superclass != null && !superclass.isObject()) {
          ConstructorElement unnamedConstructor = superclass.getElement().getUnnamedConstructor();
          ConstructorDeclaration superConstructorDeclaration = findConstructorDeclaration(unnamedConstructor);
          if (superConstructorDeclaration != null) {
            referenceGraph.addEdge(declaration, superConstructorDeclaration);
          }
        }
      }
      for (FormalParameter parameter : declaration.getParameters().getParameters()) {
        referenceGraph.addNode(parameter);
        referenceGraph.addEdge(declaration, parameter);
        if (parameter instanceof DefaultFormalParameter) {
          Expression defaultValue = ((DefaultFormalParameter) parameter).getDefaultValue();
          if (defaultValue != null) {

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   * @param constNode the constant for which a value is to be computed
   */
  private void computeValueFor(AstNode constNode) {
    beforeComputeValue(constNode);
    if (constNode instanceof VariableDeclaration) {
      VariableDeclaration declaration = (VariableDeclaration) constNode;
      Element element = declaration.getElement();
      EvaluationResultImpl result = declaration.getInitializer().accept(createConstantVisitor());
      ((VariableElementImpl) element).setEvaluationResult(result);
    } else if (constNode instanceof InstanceCreationExpression) {
      InstanceCreationExpression expression = (InstanceCreationExpression) constNode;
      ConstructorElement constructor = expression.getStaticElement();
      if (constructor == null) {
        // Couldn't resolve the constructor so we can't compute a value.  No problem--the error
        // has already been reported.
        return;
      }
      ConstantVisitor constantVisitor = createConstantVisitor();
      EvaluationResultImpl result = evaluateConstructorCall(
          constNode,
          expression.getArgumentList().getArguments(),
          constructor,
          constantVisitor);
      expression.setEvaluationResult(result);
    } else if (constNode instanceof ConstructorDeclaration) {
      ConstructorDeclaration declaration = (ConstructorDeclaration) constNode;
      NodeList<ConstructorInitializer> initializers = declaration.getInitializers();
      ConstructorElementImpl constructor = (ConstructorElementImpl) declaration.getElement();
      constructor.setConstantInitializers(new InitializerCloner().cloneNodeList(initializers));
    } else if (constNode instanceof FormalParameter) {
      if (constNode instanceof DefaultFormalParameter) {
        DefaultFormalParameter parameter = ((DefaultFormalParameter) constNode);
        ParameterElement element = parameter.getElement();

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      element = ((PropertyAccessorElement) element).getVariable();
    }
    if (element instanceof VariableElement) {
      VariableElement variable = (VariableElement) element;
      if (variable.isConst()) {
        VariableDeclaration variableDeclaration = variableDeclarationMap.get(variable);
        // The declaration will be null when the variable is not defined in the compilation units
        // that were used to produce the variableDeclarationMap.  In such cases, the variable should
        // already have a value associated with it, but we don't bother to check because there's
        // nothing we can do about it at this point.
        if (variableDeclaration != null) {

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Related Classes of com.google.dart.engine.ast.VariableDeclaration

com.google.dart.engine.internal.constant.ConstantValueComputer

com.google.dart.engine.internal.constant.ReferenceFinder

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