private RuntimeResult VisitCallNode(CallNode node, Context context, Context fromCtx = null)
{
List <(string, Values.Value)> args = new List <(string, Values.Value)>();
for (int i = 0; i < node.Arguments.Count; i++)
{
RuntimeResult result = Visit(node.Arguments[i].Item2, fromCtx == null ? context : fromCtx);
if (result.HasError)
{
return(result);
}
args.Add((node.Arguments[i].Item1, result.Value));
}
if (node.Node.Type == NodeType.VAR_ACCESS)
{
VarAccessNode accessNode = (VarAccessNode)node.Node;
string name = accessNode.Token.Value.ToString();
if (BuiltinMethods.BuiltinMethodList.ContainsKey(name))
{
return(BuiltinMethods.Execute(name, args, node.Position, context));
}
else
{
Values.Value method = context.GetSymbol(name);
if (method == null)
{
return(new RuntimeResult(new RuntimeError(node.Position, "Method '" + name + "' is not defined", context)));
}
if (method.Type == Values.ValueType.METHOD)
{
return(((Values.MethodValue)method).Execute(args, this));
}
else if (method.Type == Values.ValueType.CLASS)
{
Values.ClassValue classValue = ((Values.ClassValue)method).Clone();
//classValue.Type = Values.ValueType.OBJECT;
if (classValue.BaseClass != null)
{
RuntimeResult baseResult = classValue.InitializeBaseClass(context, this);
if (baseResult.HasError)
{
return(baseResult);
}
Context newContext = new Context(name, baseResult.Value.Context);
classValue.SetPositionAndContext(accessNode.Token.Position, newContext);
newContext.AddSymbol("this", classValue);
newContext.AddSymbol("base", baseResult.Value);
RuntimeResult runtimeResult = Visit(classValue.Body, newContext);
if (runtimeResult.HasError)
{
return(runtimeResult);
}
//Constructor
Values.Value ctorValue = newContext.GetSymbol("init");
if (ctorValue != null && ctorValue.Type == Values.ValueType.METHOD)
{
Values.MethodValue initMethod = (Values.MethodValue)ctorValue;
RuntimeResult res = initMethod.Execute(args, this);
if (res.HasError)
{
return(res);
}
}
return(new RuntimeResult(classValue));
}
else
{
Context newContext = new Context(name, context);
classValue.SetPositionAndContext(accessNode.Token.Position, newContext);
newContext.AddSymbol("this", classValue);
RuntimeResult runtimeResult = Visit(classValue.Body, newContext);
if (runtimeResult.HasError)
{
return(runtimeResult);
}
//Constructor
Values.Value ctorValue = newContext.GetSymbol("init");
if (ctorValue != null && ctorValue.Type == Values.ValueType.METHOD)
{
Values.MethodValue initMethod = (Values.MethodValue)ctorValue;
initMethod.Execute(args, this);
}
return(new RuntimeResult(classValue));
}
}
return(new RuntimeResult(new RuntimeError(node.Position, "'" + name + "' is not a method", context)));
}
}
return(new RuntimeResult(new RuntimeError(node.Position, "Can't call as a method", context)));
}
private RuntimeResult VisitMethodNode(MethodNode node, Context context)
{
string name = "anonymous";
if (node.Token != null)
{
switch (node.Token.Type)
{
case TokenType.IDENTIFIER:
name = node.Token.Value.ToString();
break;
case TokenType.PLUS:
name = "-add-";
break;
case TokenType.MINUS:
name = "-sub-";
break;
case TokenType.MULTIPLY:
name = "-mul-";
break;
case TokenType.DIVIDE:
name = "-div-";
break;
case TokenType.MODULUS:
name = "-mod-";
break;
case TokenType.EXPONENT:
name = "-exp-";
break;
case TokenType.STRING:
name = "-str-";
break;
case TokenType.LEFT_SQB:
name = "-sst-";
break;
case TokenType.LESS_THAN:
name = "-les-";
break;
case TokenType.LESS_TOE:
name = "-lte-";
break;
case TokenType.GREATER_THAN:
name = "-gre-";
break;
case TokenType.GREATER_TOE:
name = "-gte-";
break;
case TokenType.EQUALS_EQUALS:
name = "-eeq-";
break;
case TokenType.NOT_EQUALS:
name = "-neq-";
break;
case TokenType.BITWISE_AND:
name = "-ban-";
break;
case TokenType.BITWISE_OR:
name = "-bor-";
break;
case TokenType.BITWISE_XOR:
name = "-xor-";
break;
case TokenType.COMPLEMENT:
name = "-com-";
break;
case TokenType.EQUALS:
name = "-sse-";
break;
case TokenType.LEFT_SHIFT:
name = "-lsh-";
break;
case TokenType.RIGHT_SHIFT:
name = "-rsh-";
break;
case TokenType.BOOLEAN_AND:
name = "-and-";
break;
case TokenType.BOOLEAN_OR:
name = "-orr-";
break;
case TokenType.BOOLEAN_NOT:
name = "-not-";
break;
case TokenType.IN:
name = "-inn-";
break;
}
}
Values.Value method = new Values.MethodValue(name, node.Parameters, node.Body, node.DefaultValues).SetPositionAndContext(node.Position, context);
if (node.Token != null)
{
context.AddSymbol(name, method);
}
return(new RuntimeResult(method));
}