public override object VisitDeclaration([NotNull] CalculatorParser.DeclarationContext context)
{
var varName = context.Id().Accept(this) as string;
object varValue = null;
if (context.expression() != null)
{
varValue = context.expression().Accept(this);
}
m_iterName = varName;
m_stack.Declare(varName, varValue);
return(varValue);
}
/// <summary>
/// Visit a parse tree produced by <see cref="CalculatorParser.declaration"/>.
/// <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 VisitDeclaration([NotNull] CalculatorParser.DeclarationContext context)
{
return(VisitChildren(context));
}