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For VarInfo, fix merge and allow push!!ing new Symbols #690

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merged 3 commits into from
Oct 17, 2024
Merged

For VarInfo, fix merge and allow push!!ing new Symbols #690

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bd4baf1
Fix treatment of gid in merge(::Metadata)
mhauru Oct 14, 2024
d804ef1
Allowing pushing new symbols to TypedVarInfo
mhauru Oct 14, 2024
78f12c5
Bump patch version to 0.30.1
mhauru Oct 15, 2024
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36 changes: 29 additions & 7 deletions src/varinfo.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -490,7 +490,7 @@ function merge_metadata(metadata_left::Metadata, metadata_right::Metadata)
ranges = Vector{UnitRange{Int}}()
vals = T[]
dists = D[]
gids = metadata_right.gids # NOTE: giving precedence to `metadata_right`
gids = Set{Selector}[]
orders = Int[]
flags = Dict{String,BitVector}()
# Initialize the `flags`.
Expand Down Expand Up @@ -520,6 +520,8 @@ function merge_metadata(metadata_left::Metadata, metadata_right::Metadata)
dist_right = getdist(metadata_right, vn)
# Give precedence to `metadata_right`.
push!(dists, dist_right)
gid = metadata_right.gids[getidx(metadata_right, vn)]
push!(gids, gid)
# `orders`: giving precedence to `metadata_right`
push!(orders, getorder(metadata_right, vn))
# `flags`
Expand All @@ -539,6 +541,8 @@ function merge_metadata(metadata_left::Metadata, metadata_right::Metadata)
# `dists`
dist_left = getdist(metadata_left, vn)
push!(dists, dist_left)
gid = metadata_left.gids[getidx(metadata_left, vn)]
push!(gids, gid)
# `orders`
push!(orders, getorder(metadata_left, vn))
# `flags`
Expand All @@ -557,6 +561,8 @@ function merge_metadata(metadata_left::Metadata, metadata_right::Metadata)
# `dists`
dist_right = getdist(metadata_right, vn)
push!(dists, dist_right)
gid = metadata_right.gids[getidx(metadata_right, vn)]
push!(gids, gid)
# `orders`
push!(orders, getorder(metadata_right, vn))
# `flags`
Expand Down Expand Up @@ -1826,14 +1832,31 @@ function BangBang.push!!(
vi::VarInfo, vn::VarName, r, dist::Distribution, gidset::Set{Selector}
)
if vi isa UntypedVarInfo
@assert ~(vn in keys(vi)) "[push!!] attempt to add an exisitng variable $(getsym(vn)) ($(vn)) to VarInfo (keys=$(keys(vi))) with dist=$dist, gid=$gidset"
@assert ~(vn in keys(vi)) "[push!!] attempt to add an existing variable $(getsym(vn)) ($(vn)) to VarInfo (keys=$(keys(vi))) with dist=$dist, gid=$gidset"
elseif vi isa TypedVarInfo
@assert ~(haskey(vi, vn)) "[push!!] attempt to add an exisitng variable $(getsym(vn)) ($(vn)) to TypedVarInfo of syms $(syms(vi)) with dist=$dist, gid=$gidset"
@assert ~(haskey(vi, vn)) "[push!!] attempt to add an existing variable $(getsym(vn)) ($(vn)) to TypedVarInfo of syms $(syms(vi)) with dist=$dist, gid=$gidset"
end

sym = getsym(vn)
if vi isa TypedVarInfo && ~haskey(vi.metadata, sym)
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I guess one downside of this ordeal is that it introduces a discrepancy between push!! and push!, the latter which cannot handle new named tuple entries.

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I'm at peace with discrepancies in how ! and !! work, if the !! allows you to do something that can not be done with mutation, but is in line with the semantics of the ! version as well. Said differently, if the only reason ! doesn't do something is because it can not (since it must rely on mutation), then I think it's fine for !! to handle it.

# The NamedTuple doesn't have an entry for this variable, let's add one.
val = tovec(r)
md = Metadata(
Dict(vn => 1),
[vn],
[1:length(val)],
val,
[dist],
[gidset],
[get_num_produce(vi)],
Dict{String,BitVector}("trans" => [false], "del" => [false]),
)
vi = Accessors.@set vi.metadata[sym] = md
else
meta = getmetadata(vi, vn)
push!(meta, vn, r, dist, gidset, get_num_produce(vi))
end

meta = getmetadata(vi, vn)
push!(meta, vn, r, dist, gidset, get_num_produce(vi))

return vi
end

Expand Down Expand Up @@ -1864,7 +1887,6 @@ function Base.push!(meta::Metadata, vn, r, dist, gidset, num_produce)
push!(meta.orders, num_produce)
push!(meta.flags["del"], false)
push!(meta.flags["trans"], false)

return meta
end

Expand Down
25 changes: 25 additions & 0 deletions test/varinfo.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -154,6 +154,18 @@ DynamicPPL.getspace(::DynamicPPL.Sampler{MySAlg}) = (:s,)
test_varinfo!(vi)
test_varinfo!(empty!!(TypedVarInfo(vi)))
end

@testset "push!! to TypedVarInfo" begin
vn_x = @varname x
vn_y = @varname y
untyped_vi = VarInfo()
untyped_vi = push!!(untyped_vi, vn_x, 1.0, Normal(0, 1), Selector())
typed_vi = TypedVarInfo(untyped_vi)
typed_vi = push!!(typed_vi, vn_y, 2.0, Normal(0, 1), Selector())
@test typed_vi[vn_x] == 1.0
@test typed_vi[vn_y] == 2.0
end

@testset "setgid!" begin
vi = VarInfo(DynamicPPL.Metadata())
meta = vi.metadata
Expand Down Expand Up @@ -694,6 +706,19 @@ DynamicPPL.getspace(::DynamicPPL.Sampler{MySAlg}) = (:s,)
@test varinfo_merged[@varname(x)] == varinfo_right[@varname(x)]
@test DynamicPPL.istrans(varinfo_merged, @varname(x))
end

# The below used to error, testing to avoid regression.
@testset "merge gids" begin
gidset_left = Set([Selector(1)])
vi_left = VarInfo()
vi_left = push!!(vi_left, @varname(x), 1.0, Normal(), gidset_left)
gidset_right = Set([Selector(2)])
vi_right = VarInfo()
vi_right = push!!(vi_right, @varname(y), 2.0, Normal(), gidset_right)
varinfo_merged = merge(vi_left, vi_right)
@test DynamicPPL.getgid(varinfo_merged, @varname(x)) == gidset_left
@test DynamicPPL.getgid(varinfo_merged, @varname(y)) == gidset_right
end
end

@testset "VarInfo with selectors" begin
Expand Down