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add panic.nix and assertions to type checks

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This commit is contained in:
Emile Clark-Boman 2025-12-14 22:41:17 +10:00
parent fd008cd2e1
commit ea01dcc827
5 changed files with 44 additions and 25 deletions
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10
nib/types/fault.nix
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@ -1,4 +1,4 @@
{...}: rec {
{nib, ...}: rec {
# Fault Monad
# Wrapper around an error (ie builtins.abort)
Fault = error: {
@ -6,11 +6,13 @@
};
# Pattern Matching
isFault = F: builtins.attrNames F == ["_error_"];
isFault = T: builtins.attrNames T == ["_error_"];
# Unwrap (Monadic Return Operation)
unwrapFault = F: F._error_;
unwrapFault = T:
assert isFault T || nib.panic.badType "Fault" T;
T._error_;
# Map (Monadic Bind Operation)
mapFault = f: F: Fault (f (unwrapFault F));
mapFault = f: T: Fault (f (unwrapFault T));
}