static void AddExp(out int type)
{
int type2;
int op;
Label shortcircuit = new Label(!known);
type = Types.noType;
if (la.kind == plus_Sym)
{
Get();
Term(out type);
if (!IsArith(type))
{
SemError("arithmetic operand needed");
}
}
else if (la.kind == minus_Sym)
{
Get();
Term(out type);
if (!IsArith(type))
{
SemError("arithmetic operand needed");
}
CodeGen.NegateInteger();
}
else if (StartOf(13))
{
Term(out type);
}
else
{
SynErr(55);
}
while (la.kind == plus_Sym || la.kind == minus_Sym || la.kind == barbar_Sym)
{
AddOp(out op);
if (op == CodeGen.or)
{
CodeGen.BooleanOp(shortcircuit, CodeGen.or);
}
Term(out type2);
switch (op)
{
case CodeGen.or:
if (!IsBool(type) || !IsBool(type2))
{
SemError("boolean operands needed");
}
type = Types.boolType;
break;
default:
if (!IsArith(type) || !IsArith(type2))
{
SemError("arithmetic operands needed");
type = Types.noType;
}
CodeGen.BinaryOp(op);
break;
}
}
shortcircuit.Here();
}