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Shortcut when no attribute should be copied #1121

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Jul 12, 2020
Merged

Shortcut when no attribute should be copied #1121

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28 changes: 19 additions & 9 deletions src/Utilities/copy.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -109,30 +109,40 @@ function pass_attributes end
function pass_attributes(dest::MOI.ModelLike, src::MOI.ModelLike, copy_names::Bool, idxmap::IndexMap, pass_attr::Function=MOI.set)
# Copy model attributes
attrs = MOI.get(src, MOI.ListOfModelAttributesSet())
_pass_attributes(dest, src, copy_names, idxmap, attrs, tuple(), tuple(), tuple(), pass_attr)
if !copy_names
attrs = filter(attr -> !(attr isa MOI.Name), attrs)
end
_pass_attributes(dest, src, idxmap, attrs, tuple(), tuple(), tuple(), pass_attr)
end
function pass_attributes(dest::MOI.ModelLike, src::MOI.ModelLike, copy_names::Bool, idxmap::IndexMap, vis_src::Vector{VI}, pass_attr::Function=MOI.set)
# Copy variable attributes
attrs = MOI.get(src, MOI.ListOfVariableAttributesSet())
vis_dest = map(vi -> idxmap[vi], vis_src)
_pass_attributes(dest, src, copy_names, idxmap, attrs, (VI,), (vis_src,), (vis_dest,), pass_attr)
if !copy_names
attrs = filter(attr -> !(attr isa MOI.VariableName), attrs)
end
if !isempty(attrs) # If `attrs` is empty, we can spare the computation of `vis_dest`
vis_dest = map(vi -> idxmap[vi], vis_src)
_pass_attributes(dest, src, idxmap, attrs, (VI,), (vis_src,), (vis_dest,), pass_attr)
end
end
function pass_attributes(dest::MOI.ModelLike, src::MOI.ModelLike, copy_names::Bool, idxmap::IndexMap, cis_src::Vector{CI{F, S}}, pass_attr::Function=MOI.set) where {F, S}
# Copy constraint attributes
attrs = MOI.get(src, MOI.ListOfConstraintAttributesSet{F, S}())
cis_dest = map(ci -> idxmap[ci], cis_src)
_pass_attributes(dest, src, copy_names, idxmap, attrs, (CI{F, S},), (cis_src,), (cis_dest,), pass_attr)
if !copy_names
attrs = filter(attr -> !(attr isa MOI.ConstraintName), attrs)
end
if !isempty(attrs) # If `attrs` is empty, we can spare the computation of `cis_dest`
cis_dest = map(ci -> idxmap[ci], cis_src)
_pass_attributes(dest, src, idxmap, attrs, (CI{F, S},), (cis_src,), (cis_dest,), pass_attr)
end
end

function _pass_attributes(dest::MOI.ModelLike, src::MOI.ModelLike,
copy_names::Bool, idxmap::IndexMap, attrs,
idxmap::IndexMap, attrs,
supports_args, get_args, set_args,
pass_attr!::Function=MOI.set)
for attr in attrs
@assert MOI.is_copyable(attr)
if !copy_names && (attr isa MOI.Name || attr isa MOI.VariableName || attr isa MOI.ConstraintName)
continue
end
if attr isa MOI.VariablePrimalStart || attr isa MOI.ConstraintPrimalStart || attr isa MOI.ConstraintDualStart
# As starting values are simply *hints* for the optimization, not
# supporting them gives a warning, not an error
Expand Down