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40 lines
648 B
Perl
40 lines
648 B
Perl
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struct A {
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a : int;
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b : int;
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}
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terra A.metamethods.__update(self : &A, a : int, b : int)
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self.a = a
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self.b = b
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end
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terra A.metamethods.__apply(self : &A, a : int)
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return a + self.b
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end
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struct B {
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a : int
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}
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B.metamethods.__update = macro(function(me,arg,arg2,rhs)
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return quote me.a = arg + arg2 + rhs end
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end)
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B.metamethods.__setentry = macro(function(field,self,rhs)
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field = field:sub(2)
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return quote self.[field] = self.[field] + rhs end
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end)
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terra foo()
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var a : A
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a(4) = 5
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var b : B
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b(3,4) = 5
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b._a = 1
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return a.a + a.b + a(3) + b.a
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end
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--foo:printpretty()
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assert(foo() == 9+8+3+4+5+1)
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