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Implement and of set #82

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Merged
merged 3 commits into from
Sep 16, 2019
Merged

Implement and of set #82

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0db1a71
set: implement __and__ of set
DoDaek Sep 15, 2019
542fc68
set: add test code of set
DoDaek Sep 15, 2019
ca6e411
set: modify year of the copyright and return value of the function
DoDaek Sep 15, 2019
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14 changes: 14 additions & 0 deletions py/set.go
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Original file line number Diff line number Diff line change
Expand Up @@ -111,6 +111,20 @@ func (s *Set) M__iter__() (Object, error) {
return NewIterator(items), nil
}

func (s *Set) M__and__(other Object) (Object, error) {
ret := NewSet()
b, ok := other.(*Set)
if !ok {
return nil, ExceptionNewf(TypeError, "unsupported operand type(s) for &: '%s' and '%s'", s.Type().Name, other.Type().Name)
}
for i := range b.items {
if _, ok := s.items[i]; ok {
ret.items[i] = SetValue{}
}
}
return ret, nil
}

// Check interface is satisfied
var _ I__len__ = (*Set)(nil)
var _ I__bool__ = (*Set)(nil)
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16 changes: 16 additions & 0 deletions py/tests/set.py
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@@ -0,0 +1,16 @@
# Copyright 2019 The go-python Authors. All rights reserved.
# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file.

doc="__and__"
a = {1, 2, 3}
b = {2, 3, 4, 5}
c = a.__and__(b)
assert 2 in c
assert 3 in c

d = a & b
assert 2 in d
assert 3 in d

doc="finished"