private IEXPR ParseExpr(bool isArith)
{
IEXPR r = null;
if (Current.type == TokenType.String_Literal)
{
string val = Current.val.ToString();
StringLit s = new StringLit() { val = val };
r = s;
}
else if (Current.type == TokenType.Int_Literal)
{
int val = (int)Current.val;
IntLit i = new IntLit() { val = val };
r = i;
}
else if (Current.type == TokenType.Double_Literal)
{
double val = (double)Current.val;
DoubleLit d = new DoubleLit() { val = val };
r = d;
}
else if (Current.type == TokenType.Word && tokens[this.i + 1].val.ToString() == "(")
{
string name = Current.val.ToString();
i++;
i++;
FuncCall f = new FuncCall() { method = name, args = ParseArgs() };
r = f;
}
else if (Current.val.ToString() == "new")
{
i++;
New n = new New() { from = Current.val.ToString() };
r = n;
}
else if (Current.type == TokenType.Bool_Literal)
{
BoolLit b = new BoolLit() { val = (bool)Current.val };
r = b;
}
else if (Current.type == TokenType.Word)
{
string name = Current.val as string;
LoadVar v = new LoadVar() { name = name };
r = v;
}
if ((this.i + 1 < tokens.Length) && (isArith == false) && (tokens[this.i + 1].val.ToString() == "+" || tokens[this.i + 1].val.ToString() == "-" || tokens[this.i + 1].val.ToString() == "*" || tokens[this.i + 1].val.ToString() == "/" || tokens[this.i + 1].val.ToString() == "%" || tokens[this.i + 1].val.ToString() == "<" || tokens[this.i + 1].val.ToString() == "=" || tokens[this.i + 1].val.ToString() == ">" || Current.val.ToString() == "("))
{
r = ParseAtrithExpr(r);
i++;
return r;
}
else
{
return r;
}
throw new Exception();
}