public void TestSet()
{
var foo = new Id(new Word("foo", Tag.ID), Sara.Type.Int, 0x20);
var bar = new Constant(55);
var set = new Set(foo, bar);
set.Gen(10, 20);
//output:
// foo = 55
}
public void TestConstant()
{
Assert.AreEqual("true", Constant.True.ToString());
Assert.AreEqual("false", Constant.False.ToString());
Constant.True.Jumping(42, 99);
Constant.False.Jumping(100, 8);
//output :
//goto L42
//goto L8
var c1 = new Constant(42);
Assert.AreEqual("42", c1.ToString());
var c2 = new Constant(new Real(3.14f), Sara.Type.Int);
Assert.AreEqual("3.14", c2.ToString());
}
public Access Offset(Id a)
{
Expr i, w, t1, t2, loc;
Type type = a.Type;
this.Match('[');
i = this.Bool();
this.Match(']');
type = (type as Array).Of;
w = new Constant(type.Width);
t1 = new Arith(new Token('*'), i, w);
loc = t1;
while(_look.TagValue == '[')
{
this.Match('[');
i = this.Bool();
this.Match(']');
type = (type as Array).Of;
w = new Constant(type.Width);
t1 = new Arith(new Token('*'), i, w);
t2 = new Arith(new Token('+'), loc, t1);
loc = t2;
}
return new Access(a, loc, type);
}
public Expr Factor()
{
Expr expr = null;
switch(_look.TagValue)
{
case'(':
this.Move();
expr = this.Bool();
this.Match(')');
return expr;
case Tag.NUM:
expr = new Constant(_look, Sara.Type.Int);
this.Move();
return expr;
case Tag.REAL:
expr = new Constant(_look, Sara.Type.Float);
this.Move();
return expr;
case Tag.TRUE:
expr = Constant.True;
this.Move();
return expr;
case Tag.FALSE:
expr = Constant.False;
this.Move();
return expr;
default:
this.Error("syntax error");
return expr;
case Tag.ID:
string s = _look.ToString();
Id id = this.Top.Get(_look);
if (id == null)
this.Error(_look.ToString() + " undeclared");
this.Move();
if (_look.TagValue != '[')
return id;
else
return this.Offset(id);
}
}
