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Make prefix more type-stable #121

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Make prefix more type-stable #121

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cfd6029
Make `prefix` more type-stable
penelopeysm Apr 19, 2025
88e9a95
Bump patch version
penelopeysm Apr 19, 2025
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2 changes: 1 addition & 1 deletion Project.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,7 @@ uuid = "7a57a42e-76ec-4ea3-a279-07e840d6d9cf"
keywords = ["probablistic programming"]
license = "MIT"
desc = "Common interfaces for probabilistic programming"
version = "0.11.0"
version = "0.11.1"

[deps]
AbstractMCMC = "80f14c24-f653-4e6a-9b94-39d6b0f70001"
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35 changes: 22 additions & 13 deletions src/varname.jl
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Expand Up @@ -1112,19 +1112,28 @@ julia> AbstractPPL.prefix(@varname(x.a), @varname(y[1]))
y[1].x.a
```
"""
function prefix(vn::VarName{sym_vn}, prefix::VarName{sym_prefix}) where {sym_vn,sym_prefix}
function prefix(
vn::VarName{sym_vn,Toptic_vn}, prefix::VarName{sym_prefix,Toptic_prefix}
) where {sym_vn,sym_prefix,Toptic_vn,Toptic_prefix}
optic_vn = getoptic(vn)
optic_prefix = getoptic(prefix)
# Special case `identity` to avoid having ComposedFunctions with identity
if optic_vn == identity
new_inner_optic_vn = PropertyLens{sym_vn}()
else
new_inner_optic_vn = optic_vn ∘ PropertyLens{sym_vn}()
end
if optic_prefix == identity
new_optic_vn = new_inner_optic_vn
else
new_optic_vn = new_inner_optic_vn ∘ optic_prefix
end
return VarName{sym_prefix}(new_optic_vn)
new_optic = (optic_vn ∘ PropertyLens{sym_vn}()) ∘ optic_prefix
return VarName{sym_prefix}(new_optic)
end
function prefix(
::VarName{sym_vn,typeof(identity)}, prefix::VarName{sym_prefix,Toptic_prefix}
) where {sym_vn,sym_prefix,Toptic_prefix}
new_optic = PropertyLens{sym_vn}() ∘ getoptic(prefix)
return VarName{sym_prefix}(new_optic)
end
function prefix(
vn::VarName{sym_vn,Toptic_vn}, ::VarName{sym_prefix,typeof(identity)}
) where {sym_vn,sym_prefix,Toptic_vn}
new_optic = getoptic(vn) ∘ PropertyLens{sym_vn}()
return VarName{sym_prefix}(new_optic)
end
function prefix(
::VarName{sym_vn,typeof(identity)}, ::VarName{sym_prefix,typeof(identity)}
) where {sym_vn,sym_prefix}
return VarName{sym_prefix}(PropertyLens{sym_vn}())
end
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