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)); }