void UnaryMinusTerm(out Expression aexp)
{
bool isMinus = false; Token minusToken = null; aexp = null;
if (la.kind == 21) {
Get();
isMinus = true; minusToken = t;
}
if (la.kind == 14) {
Get();
Expression(out aexp);
Expect(15);
aexp.ParenCount += 1;
} else if (la.kind == 4) {
Get();
aexp = new Number(int.Parse(t.val)); SetPos(aexp, t);
} else if (la.kind == 2) {
Get();
aexp = new Variable(t.val); SetPos(aexp, t);
} else SynErr(34);
if (isMinus) {aexp = new UnaryMinus(aexp); SetPos(aexp, minusToken);}
}
void UnaryMinusTerm(out Expression aexp)
{
bool isMinus = false; Token minusToken = null; aexp = null;
if (la.kind == 36) {
Get();
isMinus = true; minusToken = t;
}
switch (la.kind) {
case 10: {
Get();
ArithmeticExpression(out aexp);
Expect(12);
aexp.ParenCount += 1;
break;
}
case 7: {
Get();
aexp = new Number(int.Parse(t.val)); SetPos(aexp, t);
break;
}
case 17: {
Get();
aexp = new Number(int.Parse(t.val)); SetPos(aexp, t);
break;
}
case 39: {
Get();
aexp = new Bool(true); SetPos(aexp, t);
break;
}
case 40: {
Get();
aexp = new Bool(false); SetPos(aexp, t);
break;
}
case 3: {
Get();
aexp = new Variable(t.val); SetPos(aexp, t);
break;
}
case 6: {
MethodCall(out aexp, false);
break;
}
default: SynErr(47); break;
}
if (isMinus) {aexp = new UnaryMinus(aexp); SetStartPos(aexp, minusToken); SetEndPos(aexp, t);}
}
public virtual void Visit(Variable node)
{
}
void Action(out Action act)
{
act = null; Expression exp = null;Variable v = null;
if (la.kind == 3) {
Get();
InAction inAct = new InAction(t.val);
if (la.kind == 10) {
Get();
Expect(3);
v = new Variable(t.val); SetPos(v, t); inAct.AddVariable(v);
while (la.kind == 11) {
Get();
Expect(3);
v = new Variable(t.val); SetPos(v, t); inAct.AddVariable(v);
}
Expect(12);
}
act = inAct;
} else if (la.kind == 5) {
Get();
OutAction outAct = new OutAction(t.val);
if (la.kind == 10) {
Get();
ArithmeticExpression(out exp);
outAct.AddExpression(exp);
while (la.kind == 11) {
Get();
ArithmeticExpression(out exp);
outAct.AddExpression(exp);
}
Expect(12);
}
act = outAct;
} else if (la.kind == 6) {
MethodCall(out exp, true);
act = new Call((MethodCallExpression)exp);
} else SynErr(43);
}
public override void Visit(Variable var)
{
if (!Variables.Contains(var)) {
Variables.Add(var);
}
}
public void AddVariable(Variable var)
{
_children.Add(var);
}
public override void Visit(Variable node)
{
PopChildren();
Return(SurroundWithParens(node.Name, node.ParenCount));
}
public virtual string Format(Variable v)
{
return SurroundWithParens(v.Name, v.ParenCount);
}