public override DynObj VisitWhileStatement([NotNull] KittenGrammarParser.WhileStatementContext context) { var trueBlock = Visit(context.blockLiteral()); var cond = Visit(context.cond); if (cond.t != vType.Bool) { ReportError("InvalidTypeError", $"expression \"{context.cond.GetText()}\" cannot be evaluated into bool.", context.start.Line); } while (Visit(context.cond).BoolVal == true) { Visit(trueBlock.FuncVal.IMP); } return(DNull()); }
/// <summary> /// Exit a parse tree produced by <see cref="KittenGrammarParser.whileStatement"/>. /// <para>The default implementation does nothing.</para> /// </summary> /// <param name="context">The parse tree.</param> public virtual void ExitWhileStatement([NotNull] KittenGrammarParser.WhileStatementContext context) { }
/// <summary> /// Visit a parse tree produced by <see cref="KittenGrammarParser.whileStatement"/>. /// <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 VisitWhileStatement([NotNull] KittenGrammarParser.WhileStatementContext context) { return(VisitChildren(context)); }