feat(queries): Add Nix highlights.scm (#761)

Author: jcs090218

queries/nix/highlights.scm

@@ -0,0 +1,99 @@
+(comment) @comment
+
+[
+ "if"
+ "then"
+ "else"
+ "let"
+ "inherit"
+ "in"
+ "rec"
+ "with"
+ "assert"
+ "or"
+ ] @keyword
+
+((identifier) @variable.builtin
+ (#match? @variable.builtin "^(__currentSystem|__currentTime|__nixPath|__nixVersion|__storeDir|builtins|false|null|true)$")
+ (#is-not? local))
+
+((identifier) @function.builtin
+ (#match? @function.builtin "^(__add|__addErrorContext|__all|__any|__appendContext|__attrNames|__attrValues|__bitAnd|__bitOr|__bitXor|__catAttrs|__compareVersions|__concatLists|__concatMap|__concatStringsSep|__deepSeq|__div|__elem|__elemAt|__fetchurl|__filter|__filterSource|__findFile|__foldl'|__fromJSON|__functionArgs|__genList|__genericClosure|__getAttr|__getContext|__getEnv|__hasAttr|__hasContext|__hashFile|__hashString|__head|__intersectAttrs|__isAttrs|__isBool|__isFloat|__isFunction|__isInt|__isList|__isPath|__isString|__langVersion|__length|__lessThan|__listToAttrs|__mapAttrs|__match|__mul|__parseDrvName|__partition|__path|__pathExists|__readDir|__readFile|__replaceStrings|__seq|__sort|__split|__splitVersion|__storePath|__stringLength|__sub|__substring|__tail|__toFile|__toJSON|__toPath|__toXML|__trace|__tryEval|__typeOf|__unsafeDiscardOutputDependency|__unsafeDiscardStringContext|__unsafeGetAttrPos|__valueSize|abort|baseNameOf|derivation|derivationStrict|dirOf|fetchGit|fetchMercurial|fetchTarball|fromTOML|import|isNull|map|placeholder|removeAttrs|scopedImport|throw|toString)$")
+ (#is-not? local))
+
+[
+ (integer_expression)
+ (float_expression)
+ ] @number
+
+(escape_sequence) @escape
+(dollar_escape) @escape
+
+(function_expression
+ universal: (identifier) @variable.parameter
+ )
+
+(formal
+ name: (identifier) @variable.parameter
+ "?"? @punctuation.delimiter)
+
+(select_expression
+ attrpath: (attrpath (identifier)) @property)
+
+(apply_expression
+ function: [
+            (variable_expression (identifier)) @function
+            (select_expression
+             attrpath: (attrpath
+                        attr: (identifier) @function .))])
+
+(unary_expression
+ operator: _ @operator)
+
+(binary_expression
+ operator: _ @operator)
+
+(variable_expression (identifier) @variable)
+
+(binding
+ attrpath: (attrpath (identifier)) @property)
+
+(identifier) @property
+
+(inherit_from attrs: (inherited_attrs attr: (identifier) @property) )
+
+[
+ ";"
+ "."
+ ","
+ "="
+ ] @punctuation.delimiter
+
+[
+ "("
+ ")"
+ "["
+ "]"
+ "{"
+ "}"
+ ] @punctuation.bracket
+
+(identifier) @variable
+
+[
+ (string_expression)
+ (indented_string_expression)
+ ] @string
+
+[
+ (path_expression)
+ (hpath_expression)
+ (spath_expression)
+ ] @string.special.path
+
+(uri_expression) @string.special.uri
+
+(interpolation
+ "${" @punctuation.special
+ (_) @embedded
+ "}" @punctuation.special)