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# SPDX-License-Identifier: GPL-2.0-or-later
# RingsForHomalg: Dictionaries of external rings
#
# Implementations
#
## Implementations for the rings provided by the Maple package JanetOre
## accessed via the Maple implementation of homalg.
####################################
#
# constructor functions and methods:
#
####################################
InstallMethod( CreateHomalgTable,
"for homalg rings provided by the maple package JanetOre",
[ IsHomalgExternalRingObjectInMapleUsingJanetOreRep ],
function( ext_ring_obj )
local RP, RP_Basic, RP_General, RP_BestBasis, RP_specific, component;
RP := ShallowCopy( CommonHomalgTableForMapleHomalgTools );
RP_General := ShallowCopy( CommonHomalgTableForRings );
RP_Basic := ShallowCopy( CommonHomalgTableForMapleHomalgBasic );
RP_BestBasis := ShallowCopy( CommonHomalgTableForMapleHomalgBestBasis );
RP_specific :=
rec(
## Can optionally be provided by the RingPackage
## (homalg functions check if these functions are defined or not)
## (homalgTable gives no default value)
RingName := function( R ) local r; if HasCoefficientsRing( R ) then r := RingName( CoefficientsRing( R ) ); else r := "k"; fi; return Concatenation( r, "<", homalgSendBlocking( [ "op(", R, "[1][1])" ], "need_output", "variables" ), "|", homalgSendBlocking( [ "op(", R, "[1][3])" ], "need_output", "variables" ), ">" ); end,
);
for component in NamesOfComponents( RP_General ) do
RP.(component) := RP_General.(component);
od;
for component in NamesOfComponents( RP_Basic ) do
RP.(component) := RP_Basic.(component);
od;
for component in NamesOfComponents( RP_specific ) do
RP.(component) := RP_specific.(component);
od;
Objectify( TheTypeHomalgTable, RP );
return RP;
end );
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