75 lines
1.2 KiB
Tcl
75 lines
1.2 KiB
Tcl
enum Foo(Zero, One(x:Int), Two(x:Int, y:Int), Three(x:Int, y:Text, z:Bool), Four(x,y,z,w:Int), Last(t:Text))
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func choose_text(f:Foo->Text):
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>> f
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when f is Zero:
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return "Zero"
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is One(one):
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return "One: $one"
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is Two(x, y):
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return "Two: x=$x, y=$y"
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is Three(three):
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return "Three: $three"
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is Four:
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return "Four"
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else:
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return "else: $f"
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func main():
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>> Foo.Zero
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= Foo.Zero
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>> Foo.One(123)
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= Foo.One(123)
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>> Foo.Two(123, 456)
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= Foo.Two(x=123, y=456)
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>> one := Foo.One(123)
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>> one.One
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= yes
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>> one.Two
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= no
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>> Foo.One(10) == Foo.One(10)
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= yes
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>> Foo.One(10) == Foo.Zero
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= no
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>> Foo.One(10) == Foo.One(-1)
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= no
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>> Foo.One(10) < Foo.Two(1, 2)
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= yes
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>> x := Foo.One(123)
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>> t := {x}
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>> t:has(x)
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= yes
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>> t:has(Foo.Zero)
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= no
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>> choose_text(Foo.Zero)
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= "Zero"
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>> choose_text(Foo.One(123))
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= "One: 123"
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>> choose_text(Foo.Two(123, 456))
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= "Two: x=123, y=456"
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>> choose_text(Foo.Three(123, "hi", yes))
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= 'Three: Three(x=123, y="hi", z=yes)'
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>> choose_text(Foo.Four(1,2,3,4))
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= "Four"
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>> choose_text(Foo.Last("XX"))
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= 'else: Foo.Last("XX")'
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i := 1
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cases := [Foo.One(1), Foo.One(2), Foo.Zero]
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while when cases[i] is One(x):
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>> x
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i += 1
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>> expr := when cases[1] is One(y):
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y + 1
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else:
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-1
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= 2
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