forked from auxolotl/labs
use correct name for topological sort (#5)
I am 0.8 sure this is a typo, I've never seen this being referred to as topographic sorting! Reviewed-on: auxolotl/labs#5 Reviewed-by: Jake Hamilton <jake.hamilton@hey.com> Co-authored-by: Alex Kladov <aleksey.kladov@gmail.com> Co-committed-by: Alex Kladov <aleksey.kladov@gmail.com>
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@ -21,7 +21,7 @@ lib: {
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## Apply a topological sort to a DAG.
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## Apply a topological sort to a DAG.
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##
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##
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## @type Dag a -> { result :: List a } | { cycle :: List a, loops :: List a }
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## @type Dag a -> { result :: List a } | { cycle :: List a, loops :: List a }
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topographic =
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topological =
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graph:
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graph:
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let
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let
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getEntriesBefore =
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getEntriesBefore =
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@ -43,7 +43,7 @@ lib: {
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isBefore = a: b: builtins.elem a.name b.after;
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isBefore = a: b: builtins.elem a.name b.after;
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sorted = lib.lists.sort.topographic isBefore entries;
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sorted = lib.lists.sort.topological isBefore entries;
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in
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in
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if sorted ? result then
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if sorted ? result then
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{
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{
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@ -119,11 +119,11 @@ in
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};
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};
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"sort" = {
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"sort" = {
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"topographic" = {
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"topological" = {
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"handles an empty graph" =
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"handles an empty graph" =
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let
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let
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expected = [ ];
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expected = [ ];
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actual = lib.dag.sort.topographic { };
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actual = lib.dag.sort.topological { };
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in
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in
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actual.result == expected;
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actual.result == expected;
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@ -147,7 +147,7 @@ in
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value = "d";
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value = "d";
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}
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}
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];
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];
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actual = lib.dag.sort.topographic {
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actual = lib.dag.sort.topological {
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a = lib.dag.entry.anywhere "a";
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a = lib.dag.entry.anywhere "a";
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b = lib.dag.entry.between [ "c" ] [ "a" ] "b";
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b = lib.dag.entry.between [ "c" ] [ "a" ] "b";
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c = lib.dag.entry.before [ "c" ] "c";
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c = lib.dag.entry.before [ "c" ] "c";
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@ -31,15 +31,15 @@ lib: {
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in
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in
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builtins.map (x: builtins.elemAt x 1) (builtins.sort isLess prepared);
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builtins.map (x: builtins.elemAt x 1) (builtins.sort isLess prepared);
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## Perform a topographic sort on a list of items. The predicate function determines whether
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## Perform a topological sort on a list of items. The predicate function determines whether
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## its first argument comes before the second argument.
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## its first argument comes before the second argument.
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##
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##
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## @type (a -> a -> Bool) -> List a -> List a
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## @type (a -> a -> Bool) -> List a -> List a
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topographic =
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topological =
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predicate: list:
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predicate: list:
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let
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let
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searched = lib.lists.search.depthFirst true predicate list;
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searched = lib.lists.search.depthFirst true predicate list;
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results = lib.lists.sort.topographic predicate (searched.visited ++ searched.rest);
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results = lib.lists.sort.topological predicate (searched.visited ++ searched.rest);
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in
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in
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if builtins.length list < 2 then
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if builtins.length list < 2 then
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{ result = list; }
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{ result = list; }
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@ -15,7 +15,7 @@ in
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package:
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package:
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let
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let
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phases = package.phases;
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phases = package.phases;
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sorted = lib.dag.sort.topographic phases;
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sorted = lib.dag.sort.topological phases;
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script = lib.strings.concatMapSep "\n" (
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script = lib.strings.concatMapSep "\n" (
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entry: if builtins.isFunction entry.value then entry.value package else entry.value
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entry: if builtins.isFunction entry.value then entry.value package else entry.value
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