public override MurMurVariable VisitMethodExpression([NotNull] MurMurParser.MethodExpressionContext context)
{
var name = context.WORD().GetText();
var paramContexts = context.@params()?.expression();
MurMurVariable[] parameters = null;
if (paramContexts != null)
{
parameters = new MurMurVariable[paramContexts.Length];
for (int i = 0; i < parameters.Length; i++)
{
parameters[i] = Visit(paramContexts[i]);
}
}
if (script.Globals.ContainsKey(name))
{
try
{
return(Invoke(name, parameters));
}
catch (Exception e)
{
throw new MurMurException(string.Format("Method '{0}' failed with the message: {1}", name, e.Message), context.start.Line);
}
}
else
{
if (script.IgnoreUnknownMethods)
{
return(new MurMurVariable());
}
else
{
throw new MurMurException(string.Format("Couldn't find any variable or method called {0}", name), context.start.Line);
}
}
}
/// <summary>
/// Visit a parse tree produced by the <c>methodExpression</c>
/// labeled alternative in <see cref="MurMurParser.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 VisitMethodExpression([NotNull] MurMurParser.MethodExpressionContext context)
{
return(VisitChildren(context));
}
/// <summary>
/// Exit a parse tree produced by the <c>methodExpression</c>
/// labeled alternative in <see cref="MurMurParser.expression"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitMethodExpression([NotNull] MurMurParser.MethodExpressionContext context)
{
}
