public static bool IsDefinedLambdaParam(VeeParser.LambdaContext lambda, string variableName)
{
var lambdaParams = lambda.@params;
if (lambdaParams is VeeParser.SingleLambdaParamContext singleParam)
{
return(singleParam.Name().Symbol.Text == variableName);
}
else if (lambdaParams is VeeParser.MultipleLambdaParamsContext multipleParams)
{
return(multipleParams.Name().Any(n => n.Symbol.Text == variableName));
}
else
{
return(false);
}
}
/// <summary>
/// Visit a parse tree produced by the <c>lambda</c>
/// labeled alternative in <see cref="VeeParser.expression"/>.
/// <para>
/// The default implementation returns the result of calling <see cref="AbstractParseTreeVisitor{Result}.VisitChildren(IRuleNode)"/>
/// on <paramref name="context"/>.
/// </para>
/// </summary>
/// <param name="context">The parse tree.</param>
/// <return>The visitor result.</return>
public virtual Result VisitLambda([NotNull] VeeParser.LambdaContext context)
{
return(VisitChildren(context));
}