Conversation
|
Current dependencies on/for this PR:
This stack of pull requests is managed by Graphite. |
|
|
||
| namespace wasm::analysis { | ||
|
|
||
| template<Lattice L> struct Lift { |
There was a problem hiding this comment.
Perhaps a comment on what Lift means?
| bool isBottom() const noexcept { return !this->has_value(); } | ||
| bool operator==(const Element& other) const noexcept { | ||
| return (isBottom() && other.isBottom()) || | ||
| (!isBottom() && !other.isBottom() && **this == *other); |
There was a problem hiding this comment.
Why wouldn't **this == *other work if both are bottom?
There was a problem hiding this comment.
We can't evaluate **this if isBottom because that would be dereferencing an empty optional.
There was a problem hiding this comment.
Ah, I see, then the new bottom element is basically the "nothing" case of the optional? So the extra bit of the optional marks that new item, basically. That's what I was missing.
At the risk of seeming repetitive: comments 😃
|
|
||
| template<Lattice L> struct Lift { | ||
| struct Element : std::optional<typename L::Element> { | ||
| bool isBottom() const noexcept { return !this->has_value(); } |
There was a problem hiding this comment.
How should I read this has_value? Do we use the empty optional as the bottom perhaps?
There was a problem hiding this comment.
Yes, exactly. I'll add a comment.
|
I've now improved or added doc comments to every PR in this stack. |
This lattice "lifts" another lattice by inserting a new bottom element underneath it.
This lattice "lifts" another lattice by inserting a new bottom element underneath it.
3 participants
This lattice "lifts" another lattice by inserting a new bottom element
underneath it.