public Interpreter(string input)
{
actionMap = new Dictionary<Statement_Types, lolAction> ();
tokenList = new List<Token> ();
TokenStream ts = new TokenStream (input);
Token t;
currentPosition = 0;
variableTable = new SymbolTable ();
functionTable = new FunctionTable();
lolIt = new LolIt (LOLType.NOOB, "", variableTable);
variableTable.createVar ("IT", lolIt);
errorFlag = false;
while(!ts.end()){
t = ts.get ();
MainClass.win.addLexemes (t.getValue (), t.getType ().ToString ());
if (t.getType () == TokenType.UNKNOWN) {
MainClass.win.displayTextToConsole ("Unknown token: " + t.getValue ());
tokenList.Add (t);
} else if ((t.getType () != TokenType.BTW && t.getType () != TokenType.OBTW)) {
tokenList.Add (t);
}
}
Parser p = new Parser (tokenList);
if (!p.parse ()) {
setError ("Error in parser");
};
tokToLolType = new Dictionary<TokenType, LOLType> ();
tokToLolType.Add (TokenType.NUMBR_LITERAL, LOLType.NUMBR);
tokToLolType.Add (TokenType.NUMBAR_LITERAL, LOLType.NUMBAR);
tokToLolType.Add (TokenType.TROOF_LITERAL, LOLType.TROOF);
tokToLolType.Add (TokenType.YARN_LITERAL, LOLType.YARN);
addActionDefinitions ();
actionList = p.getActionOrder ();
}
void functionCall(int location)
{
LolFunction fun = functionTable.getFunction(tokenList[location + 1].getValue());
if(fun == null) {
setError("Unknown function");
return;
}
int savePosition = currentPosition;
SymbolTable saveVariable = variableTable;
FunctionTable saveFunction = functionTable;
List<lolValue> paramList = getActualParam(location);
if(fun.parameters.Count != paramList.Count) {
setError("Wrong number of parameters");
return;
}
variableTable = new SymbolTable ();
functionTable = new FunctionTable();
for(int iii = 0; iii < paramList.Count; iii++) {
variableTable.createVar(fun.parameters[iii], paramList[iii]) ;
}
currentPosition = fun.startLocation + 1;
while(currentPosition < fun.endLocation) {
actionMap [actionList[currentPosition].type] (actionList[currentPosition].location);
currentPosition++;
}
currentPosition = savePosition;
variableTable = saveVariable;
functionTable = saveFunction;
MainClass.win.refreshSymbol(variableTable);
}