init.g

#############################################################################
##
##  init.g
##  Copyright (C) 2014                                   James D. Mitchell
##
##  Licensing information can be found in the README file of this package.
##
#############################################################################
##

# load a method for UserHomeExpand if necessary
if not IsBound(UserHomeExpand) then
  BindGlobal("UserHomeExpand", USER_HOME_EXPAND);
fi;

# load kernel function if it is installed:
if not IsBound(DIGRAPH_OUT_NBS) and "digraphs" in SHOW_STAT() then
  # try static module
  LoadStaticModule("digraphs");
fi;
if not IsBound(DIGRAPH_OUT_NBS) and
    Filename(DirectoriesPackagePrograms("digraphs"), "digraphs.so") <> fail then
  LoadDynamicModule(Filename(DirectoriesPackagePrograms("digraphs"),
                             "digraphs.so"));
fi;

BindGlobal("DIGRAPHS_IsGrapeLoaded",
           {} -> IsPackageMarkedForLoading("grape", "4.8.1"));

# To avoid warnings when GRAPE is not loaded
if not IsBound(IsGraph) then
  IsGraph := ReturnFalse;
fi;
if not IsBound(Vertices) then
  DeclareOperation("Vertices", [IsRecord]);
fi;
if not IsBound(Adjacency) then
  Adjacency := IdFunc;
fi;
# Avoid warnings with GAP 4.10 for use of FlipBlist
# Can be removed once Digraphs requires GAP>=4.11
if not IsBound(FlipBlist) then
  FlipBlist := function(BList)
    Apply(BList, x -> not x);
  end;
fi;

ReadPackage("digraphs", "gap/digraph.gd");
ReadPackage("digraphs", "gap/digraphs.g");
ReadPackage("digraphs", "gap/constructors.gd");
ReadPackage("digraphs", "gap/grape.gd");
ReadPackage("digraphs", "gap/labels.gd");
ReadPackage("digraphs", "gap/attr.gd");
ReadPackage("digraphs", "gap/prop.gd");
ReadPackage("digraphs", "gap/oper.gd");
ReadPackage("digraphs", "gap/display.gd");
ReadPackage("digraphs", "gap/isomorph.gd");
ReadPackage("digraphs", "gap/utils.gd");
ReadPackage("digraphs", "gap/io.gd");
ReadPackage("digraphs", "gap/grahom.gd");
ReadPackage("digraphs", "gap/orbits.gd");
ReadPackage("digraphs", "gap/cliques.gd");
ReadPackage("digraphs", "gap/planar.gd");
ReadPackage("digraphs", "gap/examples.gd");
ReadPackage("digraphs", "gap/weights.gd");

DeclareInfoClass("InfoDigraphs");