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25 lines
728 B
Erlang
25 lines
728 B
Erlang
-module(nx_cid).
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-export([from_sx/1, to_string/1, from_string/1, equals/2]).
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%% The kernel-side CID wrapper. The host BIF `cid:to_string/1` already
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%% produces a canonical CIDv1 (raw codec, sha2-256 multihash) over the
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%% deterministic textual form of any term (er-format-value); we expose
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%% it under the kernel namespace and add the equality + round-trip
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%% helpers the rest of the kernel needs.
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%%
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%% Naming note: the BIF module is `cid`, so we use `nx_cid` to avoid
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%% shadowing. Plans/fed-sx-milestone-1.md §Step 1 spells the file as
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%% `cid.erl`; the briefing flags Erlang snippets as illustrative.
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from_sx(V) ->
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cid:to_string(V).
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to_string(Cid) ->
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Cid.
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from_string(S) ->
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S.
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equals(A, B) ->
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A =:= B.
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