public override Yarn.Type VisitVariable(YarnSpinnerV1Parser.VariableContext context)
{
// The type of the value depends on the declared type of the
// variable.
// Note that we've seen a variable by this name, in case we
// don't see it again and we never decide on a type for it
var name = context.VAR_ID().GetText();
this.allSeenVariables.Add(name);
// Search our list of variable type bindings. If we have
// precisely one binding at the moment for the variable, we
// assume that we know its type, and return that value.
// Otherwise, we return 'undefined' for this value (either
// because we have no binding for this variable, or because
// we have more than one.)
var bindings = this.potentialTypeBindings.Where(b => b.VariableName == name);
return(bindings.Count() != 1 ? Yarn.Type.Undefined : bindings.First().Type);
}
/// <summary>
/// Exit a parse tree produced by <see cref="YarnSpinnerV1Parser.variable"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitVariable([NotNull] YarnSpinnerV1Parser.VariableContext context)
{
}
/// <summary>
/// Visit a parse tree produced by <see cref="YarnSpinnerV1Parser.variable"/>.
/// <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 VisitVariable([NotNull] YarnSpinnerV1Parser.VariableContext context)
{
return(VisitChildren(context));
}
