public override Yarn.Type VisitExpAddSub(YarnSpinnerV1Parser.ExpAddSubContext context)
{
var expressions = context.expression();
switch (context.op.Text)
{
case "+":
// + supports strings and numbers
return(CheckOperation(context, expressions, context.op.Text, Yarn.Type.String, Yarn.Type.Number));
case "-":
// - supports only numbers
return(CheckOperation(context, expressions, context.op.Text, Yarn.Type.Number));
default:
throw new InvalidOperationException($"Internal error: {nameof(VisitExpAddSub)} got unexpected op {context.op.Text}");
}
}
/// <summary>
/// Exit a parse tree produced by the <c>expAddSub</c>
/// labeled alternative in <see cref="YarnSpinnerV1Parser.expression"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitExpAddSub([NotNull] YarnSpinnerV1Parser.ExpAddSubContext context)
{
}
/// <summary>
/// Visit a parse tree produced by the <c>expAddSub</c>
/// labeled alternative in <see cref="YarnSpinnerV1Parser.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 VisitExpAddSub([NotNull] YarnSpinnerV1Parser.ExpAddSubContext context)
{
return(VisitChildren(context));
}
