public Interpreter(string filename)
{
var gmem = KittenVisitor.globalMemory;
gmem.Add("print", new DynObj {
t = vType.Function, FuncVal = new function {
t = function.funcType.Builtin, BuiltinIMP = BI_print
}
});
gmem.Add("println", new DynObj {
t = vType.Function, FuncVal = new function {
t = function.funcType.Builtin, BuiltinIMP = BI_println
}
});
gmem.Add("number", new DynObj {
t = vType.Function, FuncVal = new function {
t = function.funcType.Builtin, BuiltinIMP = BI_numberCast
}
});
gmem.Add("input", new DynObj {
t = vType.Function, FuncVal = new function {
t = function.funcType.Builtin, BuiltinIMP = BI_input
}
});
input = File.ReadAllText(filename);
lexer = new KittenGrammarLexer(new AntlrInputStream(input));
parser = new KittenGrammarParser(new CommonTokenStream(lexer));
tree = parser.compileUnit();
visitor = new KittenVisitor(new Dictionary <string, DynObj>());
}
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));
}