-
-
Notifications
You must be signed in to change notification settings - Fork 12.6k
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
nixos/dconf: support generating from attrs
- Loading branch information
linsui
committed
May 28, 2023
1 parent
4e37b4e
commit 9a2b75e
Showing
5 changed files
with
287 additions
and
83 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,181 @@ | ||
# This file is taken from https://github.com/nix-community/home-manager | ||
# Copyright (c) 2017-2022 Home Manager contributors | ||
# | ||
# A partial and basic implementation of GVariant formatted strings. | ||
# | ||
# Note, this API is not considered fully stable and it might therefore | ||
# change in backwards incompatible ways without prior notice. | ||
|
||
{ lib }: | ||
|
||
let | ||
inherit (lib) | ||
concatMapStringsSep concatStrings escape hasPrefix head replaceStrings; | ||
|
||
mkPrimitive = t: v: { | ||
_type = "gvariant"; | ||
type = t; | ||
value = v; | ||
__toString = self: "@${self.type} ${toString self.value}"; | ||
}; | ||
|
||
type = { | ||
arrayOf = t: "a${t}"; | ||
maybeOf = t: "m${t}"; | ||
tupleOf = ts: "(${concatStrings ts})"; | ||
dictionaryEntryOf = ts: "{${concatStrings ts}}"; | ||
string = "s"; | ||
boolean = "b"; | ||
uchar = "y"; | ||
int16 = "n"; | ||
uint16 = "q"; | ||
int32 = "i"; | ||
uint32 = "u"; | ||
int64 = "x"; | ||
uint64 = "t"; | ||
double = "d"; | ||
variant = "v"; | ||
}; | ||
|
||
# Returns the GVariant type of a given Nix value. If no type can be | ||
# found for the value then the empty string is returned. | ||
typeOf = v: | ||
with type; | ||
if builtins.isBool v then | ||
boolean | ||
else if builtins.isInt v then | ||
int32 | ||
else if builtins.isFloat v then | ||
double | ||
else if builtins.isString v then | ||
string | ||
else if builtins.isList v then | ||
let elemType = elemTypeOf v; | ||
in if elemType == "" then "" else arrayOf elemType | ||
else if builtins.isAttrs v && v ? type then | ||
v.type | ||
else | ||
""; | ||
|
||
elemTypeOf = vs: | ||
if builtins.isList vs then | ||
if vs == [ ] then "" else typeOf (head vs) | ||
else | ||
""; | ||
|
||
mkMaybe = elemType: elem: | ||
mkPrimitive (type.maybeOf elemType) elem // { | ||
__toString = self: | ||
if self.value == null then | ||
"@${self.type} nothing" | ||
else | ||
"just ${toString self.value}"; | ||
}; | ||
|
||
in | ||
rec { | ||
|
||
inherit type typeOf; | ||
|
||
isGVariant = v: v._type or "" == "gvariant"; | ||
|
||
isArray = hasPrefix "a"; | ||
isDictionaryEntry = hasPrefix "{"; | ||
isMaybe = hasPrefix "m"; | ||
isTuple = hasPrefix "("; | ||
|
||
# Returns the GVariant value that most closely matches the given Nix | ||
# value. If no GVariant value can be found then `null` is returned. | ||
|
||
mkValue = v: | ||
if builtins.isBool v then | ||
mkBoolean v | ||
else if builtins.isInt v then | ||
mkInt32 v | ||
else if builtins.isFloat v then | ||
mkDouble v | ||
else if builtins.isString v then | ||
mkString v | ||
else if builtins.isList v then | ||
if v == [ ] then mkArray type.string [ ] else mkArray (elemTypeOf v) v | ||
else if builtins.isAttrs v && (v._type or "") == "gvariant" then | ||
v | ||
else | ||
null; | ||
|
||
mkArray = elemType: elems: | ||
mkPrimitive (type.arrayOf elemType) (map mkValue elems) // { | ||
__toString = self: | ||
"@${self.type} [${concatMapStringsSep "," toString self.value}]"; | ||
}; | ||
|
||
mkEmptyArray = elemType: mkArray elemType [ ]; | ||
|
||
mkVariant = elem: | ||
let gvarElem = mkValue elem; | ||
in mkPrimitive type.variant gvarElem // { | ||
__toString = self: "@${self.type} <${toString self.value}>"; | ||
}; | ||
|
||
mkDictionaryEntry = elems: | ||
let | ||
gvarElems = map mkValue elems; | ||
dictionaryType = type.dictionaryEntryOf (map (e: e.type) gvarElems); | ||
in | ||
mkPrimitive dictionaryType gvarElems // { | ||
__toString = self: | ||
"@${self.type} {${concatMapStringsSep "," toString self.value}}"; | ||
}; | ||
|
||
mkNothing = elemType: mkMaybe elemType null; | ||
|
||
mkJust = elem: let gvarElem = mkValue elem; in mkMaybe gvarElem.type gvarElem; | ||
|
||
mkTuple = elems: | ||
let | ||
gvarElems = map mkValue elems; | ||
tupleType = type.tupleOf (map (e: e.type) gvarElems); | ||
in | ||
mkPrimitive tupleType gvarElems // { | ||
__toString = self: | ||
"@${self.type} (${concatMapStringsSep "," toString self.value})"; | ||
}; | ||
|
||
mkBoolean = v: | ||
mkPrimitive type.boolean v // { | ||
__toString = self: if self.value then "true" else "false"; | ||
}; | ||
|
||
mkString = v: | ||
let sanitize = s: replaceStrings [ "\n" ] [ "\\n" ] (escape [ "'" "\\" ] s); | ||
in mkPrimitive type.string v // { | ||
__toString = self: "'${sanitize self.value}'"; | ||
}; | ||
|
||
mkObjectpath = v: | ||
mkPrimitive type.string v // { | ||
__toString = self: "objectpath '${escape [ "'" ] self.value}'"; | ||
}; | ||
|
||
mkUchar = mkPrimitive type.uchar; | ||
|
||
mkInt16 = mkPrimitive type.int16; | ||
|
||
mkUint16 = mkPrimitive type.uint16; | ||
|
||
mkInt32 = v: | ||
mkPrimitive type.int32 v // { | ||
__toString = self: toString self.value; | ||
}; | ||
|
||
mkUint32 = mkPrimitive type.uint32; | ||
|
||
mkInt64 = mkPrimitive type.int64; | ||
|
||
mkUint64 = mkPrimitive type.uint64; | ||
|
||
mkDouble = v: | ||
mkPrimitive type.double v // { | ||
__toString = self: toString self.value; | ||
}; | ||
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.