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add hash support for tuple

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This commit is contained in:
blueloveTH 2022-11-12 21:29:16 +08:00
parent a5cea1e0a6
commit b15066f458
1 changed files with 10 additions and 0 deletions
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10
src/vm.h
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@ -690,6 +690,16 @@ public:
} }
if (obj->isType(_tp_str)) return PyStr_AS_C(obj).hash(); if (obj->isType(_tp_str)) return PyStr_AS_C(obj).hash();
if (obj->isType(_tp_type)) return (_Int)obj.get(); if (obj->isType(_tp_type)) return (_Int)obj.get();
if (obj->isType(_tp_tuple)) {
_Int x = 1000003;
for (const auto& item : PyTuple_AS_C(obj)) {
_Int y = hash(item);
// this is recommended by Github Copilot
// i am not sure whether it is a good idea
x = x ^ (y + 0x9e3779b9 + (x << 6) + (x >> 2));
}
return x;
}
typeError("unhashable type: " + obj->getTypeName()); typeError("unhashable type: " + obj->getTypeName());
return 0; return 0;
} }