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

com.google.dart.engine.ast.FormalParameterList

Instances of the class {@code FormalParameterList} represent the formal parameter list of amethod declaration, function declaration, or function type alias.

While the grammar requires all optional formal parameters to follow all of the normal formal parameters and at most one grouping of optional formal parameters, this class does not enforce those constraints. All parameters are flattened into a single list, which can have any or all kinds of parameters (normal, named, and positional) in any order.

 formalParameterList ::= '(' ')' | '(' normalFormalParameters (',' optionalFormalParameters)? ')' | '(' optionalFormalParameters ')' normalFormalParameters ::= {@link NormalFormalParameter normalFormalParameter} (',' {@link NormalFormalParameter normalFormalParameter}) optionalFormalParameters ::= optionalPositionalFormalParameters | namedFormalParameters optionalPositionalFormalParameters ::= '['  {@link DefaultFormalParameter positionalFormalParameter} (',' {@link DefaultFormalParameter positionalFormalParameter})* ']' namedFormalParameters ::= '{'  {@link DefaultFormalParameter namedFormalParameter} (',' {@link DefaultFormalParameter namedFormalParameter})* '}'

@coverage dart.engine.ast

    }
    SimpleIdentifier methodName = node.getName();
    if (methodName.isSynthetic()) {
      return false;
    }
    FormalParameterList formalParameterList = node.getParameters();
    NodeList<FormalParameter> parameterList = formalParameterList != null
        ? formalParameterList.getParameters() : null;
    AstNode[] parameters = parameterList != null
        ? parameterList.toArray(new AstNode[parameterList.size()]) : null;
    return checkForAllInvalidOverrideErrorCodesForExecutable(
        executableElement,
        executableElement.getParameters(),

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   * @return {@code true} if and only if an error code is generated on the passed node
   * @see CompileTimeErrorCode#DEFAULT_VALUE_IN_FUNCTION_TYPE_ALIAS
   */
  private boolean checkForDefaultValueInFunctionTypeAlias(FunctionTypeAlias node) {
    boolean result = false;
    FormalParameterList formalParameterList = node.getParameters();
    NodeList<FormalParameter> parameters = formalParameterList.getParameters();
    for (FormalParameter formalParameter : parameters) {
      if (formalParameter instanceof DefaultFormalParameter) {
        DefaultFormalParameter defaultFormalParameter = (DefaultFormalParameter) formalParameter;
        if (defaultFormalParameter.getDefaultValue() != null) {
          errorReporter.reportErrorForNode(

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   * @param node the method declaration to evaluate
   * @return {@code true} if and only if an error code is generated on the passed node
   * @see CompileTimeErrorCode#OPTIONAL_PARAMETER_IN_OPERATOR
   */
  private boolean checkForOptionalParameterInOperator(MethodDeclaration node) {
    FormalParameterList parameterList = node.getParameters();
    if (parameterList == null) {
      return false;
    }
    boolean foundError = false;
    NodeList<FormalParameter> formalParameters = parameterList.getParameters();
    for (FormalParameter formalParameter : formalParameters) {
      if (formalParameter.getKind().isOptional()) {
        errorReporter.reportErrorForNode(
            CompileTimeErrorCode.OPTIONAL_PARAMETER_IN_OPERATOR,
            formalParameter);

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   * @return {@code true} if and only if an error code is generated on the passed node
   * @see CompileTimeErrorCode#WRONG_NUMBER_OF_PARAMETERS_FOR_OPERATOR
   */
  private boolean checkForWrongNumberOfParametersForOperator(MethodDeclaration node) {
    // prepare number of parameters
    FormalParameterList parameterList = node.getParameters();
    if (parameterList == null) {
      return false;
    }
    int numParameters = parameterList.getParameters().size();
    // prepare operator name
    SimpleIdentifier nameNode = node.getName();
    if (nameNode == null) {
      return false;
    }

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  public Void visitFieldFormalParameter(FieldFormalParameter node) {
    super.visitFieldFormalParameter(node);
    Element element = node.getIdentifier().getStaticElement();
    if (element instanceof ParameterElementImpl) {
      ParameterElementImpl parameter = (ParameterElementImpl) element;
      FormalParameterList parameterList = node.getParameters();
      if (parameterList == null) {
        Type type;
        TypeName typeName = node.getType();
        if (typeName == null) {
          type = dynamicType;

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

com.google.dart.engine.internal.resolver.TypeResolverVisitor

com.google.dart.engine.internal.verifier.ErrorVerifier

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