public override DynObj VisitDeclStatement([NotNull] KittenGrammarParser.DeclStatementContext context)
{
var name = context.ID().Symbol.Text;
if (memory.ContainsKey(name))
{
ReportError("DuplicateDeclarationError", $"you have already declared identifier {name}", context.start.Line);
}
else
{
DynObj value = Visit(context.expr());
memory.Add(name, value);
}
return(DNull());
}
/// <summary>
/// Exit a parse tree produced by <see cref="KittenGrammarParser.declStatement"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitDeclStatement([NotNull] KittenGrammarParser.DeclStatementContext context)
{
}
/// <summary>
/// Visit a parse tree produced by <see cref="KittenGrammarParser.declStatement"/>.
/// <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 VisitDeclStatement([NotNull] KittenGrammarParser.DeclStatementContext context)
{
return(VisitChildren(context));
}
