public override DynObj VisitFunctionCallExpr([NotNull] KittenGrammarParser.FunctionCallExprContext context)
{
var name = context.ID().Symbol.Text;
if (!memory.ContainsKey(name))
{
ReportError("UnrecognizedIdentifierError", $"identifier name {name} not found in the context", context.start.Line);
}
var paraList = memory[name].FuncVal.parameters;
var valueList = new List <DynObj>();
if (context.exprList() != null)
{
foreach (var item in context.exprList().expr())
{
valueList.Add(Visit(item));
}
}
if (memory[name].FuncVal.t == function.funcType.User)
{
if (paraList.Count != valueList.Count)
{
ReportError("ArgumentNumberMismatchError", $"expected {paraList.Count}, but called with {valueList.Count}", context.start.Line);
}
Dictionary <string, DynObj> contextMem = new Dictionary <string, DynObj>();
for (int i = 0; i < paraList.Count; i++)
{
contextMem.Add(paraList[i], valueList[i]);
}
var funcVisitor = new KittenVisitor(contextMem);
return(funcVisitor.Visit(memory[name].FuncVal.IMP));
}
if (memory[name].FuncVal.t == function.funcType.Builtin)
{
return(memory[name].FuncVal.BuiltinIMP(valueList));
}
return(base.VisitFunctionCallExpr(context));
}
/// <summary>
/// Exit a parse tree produced by the <c>functionCallExpr</c>
/// labeled alternative in <see cref="KittenGrammarParser.expr"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitFunctionCallExpr([NotNull] KittenGrammarParser.FunctionCallExprContext context)
{
}
/// <summary>
/// Visit a parse tree produced by the <c>functionCallExpr</c>
/// labeled alternative in <see cref="KittenGrammarParser.expr"/>.
/// <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 VisitFunctionCallExpr([NotNull] KittenGrammarParser.FunctionCallExprContext context)
{
return(VisitChildren(context));
}
