Merge pull request #795 from Golmote/prism-nix

Add support for Nix

components.js

@@ -304,6 +304,10 @@ var components = {
 			"title": "Nim",
 			"owner": "Golmote"
 		},
+		"nix": {
+			"title": "Nix",
+			"owner": "Golmote"
+		},
 		"nsis": {
 			"title": "NSIS",
 			"owner": "idleberg"

components/prism-nix.js

@@ -0,0 +1,39 @@
+Prism.languages.nix = {
+	'comment': /\/\*[\s\S]*?\*\/|#.*/,
+	'string': {
+		pattern: /"(?:[^"\\]|\\[\s\S])*"|''(?:(?!'')[\s\S]|''(?:'|\\|\$\{))*''/,
+		inside: {
+			'interpolation': {
+				// The lookbehind ensures the ${} is not preceded by \ or ''
+				pattern: /(^|(?:^|(?!'').)[^\\])\$\{(?:[^}]|\{[^}]*\})*}/,
+				lookbehind: true,
+				inside: {
+					'antiquotation': {
+						pattern: /^\$(?=\{)/,
+						alias: 'variable'
+					}
+					// See rest below
+				}
+			}
+		}
+	},
+	'url': [
+		/\b(?:[a-z]{3,7}:\/\/)[\w\-+%~\/.:#=?&]+/,
+		{
+			pattern: /([^\/])(?:[\w\-+%~.:#=?&]*(?!\/\/)[\w\-+%~\/.:#=?&])?(?!\/\/)\/[\w\-+%~\/.:#=?&]*/,
+			lookbehind: true
+		}
+	],
+	'antiquotation': {
+		pattern: /\$(?=\{)/,
+		alias: 'variable'
+	},
+	'number': /\b\d+\b/,
+	'keyword': /\b(?:assert|builtins|else|if|in|inherit|let|null|or|then|with)\b/,
+	'function': /\b(?:abort|add|all|any|attrNames|attrValues|baseNameOf|compareVersions|concatLists|currentSystem|deepSeq|derivation|dirOf|div|elem(?:At)?|fetch(?:url|Tarball)|filter(?:Source)?|fromJSON|genList|getAttr|getEnv|hasAttr|hashString|head|import|intersectAttrs|is(?:Attrs|Bool|Function|Int|List|Null|String)|length|lessThan|listToAttrs|map|mul|parseDrvName|pathExists|read(?:Dir|File)|removeAttrs|replaceStrings|seq|sort|stringLength|sub(?:string)?|tail|throw|to(?:File|JSON|Path|String|XML)|trace|typeOf)\b|\bfoldl'\B/,
+	'boolean': /\b(?:true|false)\b/,
+	'operator': /[=!<>]=?|\+\+?|\|\||&&|\/\/|->?|[?@]/,
+	'punctuation': /[{}()[\].,:;]/
+};
+
+Prism.languages.nix.string.inside.interpolation.inside.rest = Prism.util.clone(Prism.languages.nix);

examples/prism-nix.html

@@ -0,0 +1,59 @@
+<h1>Nix</h1>
+<p>To use this language, use the class "language-nix".</p>
+
+<h2>Comments</h2>
+<pre><code>#
+# Single line comment
+/* Multi-line
+comment */</code></pre>
+
+<h2>String</h2>
+<pre><code>""
+"foo\"bar"
+"foo
+bar"
+
+''''
+''foo'''bar''
+''
+foo
+bar
+''</code></pre>
+
+<h2>String interpolation</h2>
+<pre><code>"foo${42}bar"
+"foo\${42}bar" # This is not interpolated
+''foo${42}bar''
+''foo''${42}bar'' # This is not interpolated</code></pre>
+
+<h2>URLs and paths</h2>
+<pre><code>ftp://ftp.nluug.nl/pub/gnu/hello/hello-2.1.1.tar.gz
+http://example.org/foo.tar.bz2
+/bin/sh
+./builder.sh
+~/foo.bar</code></pre>
+
+<h2>Integers, booleans and null</h2>
+<pre><code>0
+42
+
+true
+false
+
+null</code></pre>
+
+<h2>Builtin functions</h2>
+<pre><code>name = baseNameOf (toString url);
+imap =
+	if builtins ? genList then
+		f: list: genList (n: f (n + 1) (elemAt list n)) (length list)</code></pre>
+
+<h2>Known failures</h2>
+<p>There are certain edge cases where Prism will fail.
+	There are always such cases in every regex-based syntax highlighter.
+	However, Prism dares to be open and honest about them.
+	If a failure is listed here, it doesn’t mean it will never be fixed. This is more of a “known bugs” list, just with a certain type of bug.
+</p>
+
+<h3>Comment-like substrings</h3>
+<pre><code>"This # is a broken string"</code></pre>

tests/languages/nix/antiquotation_feature.test

@@ -0,0 +1,14 @@
+${42}
+
+----------------------------------------------------
+
+[
+	["antiquotation", "$"],
+	["punctuation", "{"],
+	["number", "42"],
+	["punctuation", "}"]
+]
+
+----------------------------------------------------
+
+Checks for antiquotations outside of strings.

tests/languages/nix/boolean_feature.test

@@ -0,0 +1,13 @@
+true
+false
+
+----------------------------------------------------
+
+[
+	["boolean", "true"],
+	["boolean", "false"]
+]
+
+----------------------------------------------------
+
+Checks for booleans.

tests/languages/nix/comment_feature.test

@@ -0,0 +1,18 @@
+#
+# foobar
+/**/
+/* foo
+bar */
+
+----------------------------------------------------
+
+[
+	["comment", "#"],
+	["comment", "# foobar"],
+	["comment", "/**/"],
+	["comment", "/* foo\r\nbar */"]
+]
+
+----------------------------------------------------
+
+Checks for comments.

tests/languages/nix/function_feature.test

@@ -0,0 +1,133 @@
+abort
+add
+all
+any
+attrNames
+attrValues
+baseNameOf
+compareVersions
+concatLists
+currentSystem
+deepSeq
+derivation
+dirOf
+div
+elem
+elemAt
+fetchurl
+fetchTarball
+filter
+filterSource
+fromJSON
+genList
+getAttr
+getEnv
+hasAttr
+hashString
+head
+import
+intersectAttrs
+isAttrs
+isBool
+isFunction
+isInt
+isList
+isNull
+isString
+length
+lessThan
+listToAttrs
+map
+mul
+parseDrvName
+pathExists
+readDir
+readFile
+removeAttrs
+replaceStrings
+seq
+sort
+stringLength
+sub
+substring
+tail
+throw
+toFile
+toJSON
+toPath
+toString
+toXML
+trace
+typeOf
+foldl'
+
+----------------------------------------------------
+
+[
+	["function", "abort"],
+	["function", "add"],
+	["function", "all"],
+	["function", "any"],
+	["function", "attrNames"],
+	["function", "attrValues"],
+	["function", "baseNameOf"],
+	["function", "compareVersions"],
+	["function", "concatLists"],
+	["function", "currentSystem"],
+	["function", "deepSeq"],
+	["function", "derivation"],
+	["function", "dirOf"],
+	["function", "div"],
+	["function", "elem"],
+	["function", "elemAt"],
+	["function", "fetchurl"],
+	["function", "fetchTarball"],
+	["function", "filter"],
+	["function", "filterSource"],
+	["function", "fromJSON"],
+	["function", "genList"],
+	["function", "getAttr"],
+	["function", "getEnv"],
+	["function", "hasAttr"],
+	["function", "hashString"],
+	["function", "head"],
+	["function", "import"],
+	["function", "intersectAttrs"],
+	["function", "isAttrs"],
+	["function", "isBool"],
+	["function", "isFunction"],
+	["function", "isInt"],
+	["function", "isList"],
+	["function", "isNull"],
+	["function", "isString"],
+	["function", "length"],
+	["function", "lessThan"],
+	["function", "listToAttrs"],
+	["function", "map"],
+	["function", "mul"],
+	["function", "parseDrvName"],
+	["function", "pathExists"],
+	["function", "readDir"],
+	["function", "readFile"],
+	["function", "removeAttrs"],
+	["function", "replaceStrings"],
+	["function", "seq"],
+	["function", "sort"],
+	["function", "stringLength"],
+	["function", "sub"],
+	["function", "substring"],
+	["function", "tail"],
+	["function", "throw"],
+	["function", "toFile"],
+	["function", "toJSON"],
+	["function", "toPath"],
+	["function", "toString"],
+	["function", "toXML"],
+	["function", "trace"],
+	["function", "typeOf"],
+	["function", "foldl'"]
+]
+
+----------------------------------------------------
+
+Checks for built-in functions.

tests/languages/nix/keyword_feature.test

@@ -0,0 +1,15 @@
+assert builtins else if
+in inherit let null
+or then with
+
+----------------------------------------------------
+
+[
+	["keyword", "assert"], ["keyword", "builtins"], ["keyword", "else"], ["keyword", "if"],
+	["keyword", "in"], ["keyword", "inherit"], ["keyword", "let"], ["keyword", "null"],
+	["keyword", "or"], ["keyword", "then"], ["keyword", "with"]
+]
+
+----------------------------------------------------
+
+Checks for keywords.

tests/languages/nix/number_feature.test

@@ -0,0 +1,15 @@
+0
+42
+120457
+
+----------------------------------------------------
+
+[
+	["number", "0"],
+	["number", "42"],
+	["number", "120457"]
+]
+
+----------------------------------------------------
+
+Checks for integers.

tests/languages/nix/operator_feature.test

@@ -0,0 +1,25 @@
+= ==
+! !=
+< <=
+> >=
++ ++
+- ->
+|| && //
+? @
+
+----------------------------------------------------
+
+[
+	["operator", "="], ["operator", "=="],
+	["operator", "!"], ["operator", "!="],
+	["operator", "<"], ["operator", "<="],
+	["operator", ">"], ["operator", ">="],
+	["operator", "+"], ["operator", "++"],
+	["operator", "-"], ["operator", "->"],
+	["operator", "||"], ["operator", "&&"], ["operator", "//"],
+	["operator", "?"], ["operator", "@"]
+]
+
+----------------------------------------------------
+
+Checks for operators.