Merge pull request #614 from Golmote/prism-elixir

Add support for elixir

Author: Golmote

components.js

@@ -127,6 +127,10 @@ var components = {
 			"title": "Eiffel",
 			"owner": "Conaclos"
 		},
+		"elixir": {
+			"title": "elixir",
+			"owner": "Golmote"
+		},
 		"erlang": {
 			"title": "Erlang",
 			"owner": "Golmote"

components/prism-elixir.js

@@ -0,0 +1,84 @@
+Prism.languages.elixir = {
+	// Negative look-ahead is needed for string interpolation
+	'comment': /#(?!\{).*/,
+	// ~r"""foo""", ~r'''foo''', ~r/foo/, ~r|foo|, ~r"foo", ~r'foo', ~r(foo), ~r[foo], ~r{foo}, ~r<foo>
+	'regex': /~[rR](?:("""|'''|[\/|"'])(?:\\.|(?!\1)[^\\])+\1|\((?:\\\)|[^)])+\)|\[(?:\\\]|[^\]])+\]|\{(?:\\\}|[^}])+\}|<(?:\\>|[^>])+>)[uismxfr]*/,
+	'string': [
+		{
+			// ~s"""foo""", ~s'''foo''', ~s/foo/, ~s|foo|, ~s"foo", ~s'foo', ~s(foo), ~s[foo], ~s{foo}, ~s<foo>
+			pattern: /~[cCsSwW](?:("""|'''|[\/|"'])(?:\\.|(?!\1)[^\\])+\1|\((?:\\\)|[^)])+\)|\[(?:\\\]|[^\]])+\]|\{(?:\\\}|#\{[^}]+\}|[^}])+\}|<(?:\\>|[^>])+>)[csa]?/,
+			inside: {
+				// See interpolation below
+			}
+		},
+		{
+			pattern: /("""|''')[\s\S]*?\1/,
+			inside: {
+				// See interpolation below
+			}
+		},
+		{
+			// Multi-line strings are allowed
+			pattern: /("|')(?:\\[\s\S]|(?!\1)[^\\])*\1/,
+			inside: {
+				// See interpolation below
+			}
+		}
+	],
+	'atom': {
+		// Look-behind prevents bad highlighting of the :: operator
+		pattern: /(^|[^:]):\w+/,
+		lookbehind: true,
+		alias: 'symbol'
+	},
+	// Look-ahead prevents bad highlighting of the :: operator
+	'attr-name': /\w+:(?!:)/,
+	'capture': {
+		// Look-behind prevents bad highlighting of the && operator
+		pattern: /(^|[^&])&(?:[^&\s\d()][^\s()]*|(?=\())/,
+		lookbehind: true,
+		alias: 'function'
+	},
+	'argument': {
+		// Look-behind prevents bad highlighting of the && operator
+		pattern: /(^|[^&])&\d+/,
+		lookbehind: true,
+		alias: 'variable'
+	},
+	'attribute': {
+		pattern: /@[\S]+/,
+		alias: 'variable'
+	},
+	'number': /\b(?:0[box][a-f\d_]+|\d[\d_]*)(?:\.[\d_]+)?(?:e[+-]?[\d_]+)?\b/i,
+	'keyword': /\b(?:after|alias|and|case|catch|cond|def(?:callback|exception|impl|module|p|protocol|struct)?|do|else|end|fn|for|if|import|not|or|require|rescue|try|unless|use|when)\b/,
+	'boolean': /\b(?:true|false|nil)\b/,
+	'operator': [
+		/\bin\b|&&?|\|[|>]?|\\\\|::|\.\.\.?|\+\+?|-[->]?|<[-=>]|>=|!==?|\B!|=(?:==?|[>~])?|[*\/^]/,
+		{
+			// We don't want to match <<
+			pattern: /([^<])<(?!<)/,
+			lookbehind: true
+		},
+		{
+			// We don't want to match >>
+			pattern: /([^>])>(?!>)/,
+			lookbehind: true
+		}
+	],
+	'punctuation': /<<|>>|[.,%\[\]{}()]/
+};
+
+Prism.languages.elixir.string.forEach(function(o) {
+	o.inside = {
+		'interpolation': {
+			pattern: /#\{[^}]+\}/,
+			inside: {
+				'delimiter': {
+					pattern: /^#\{|\}$/,
+					alias: 'punctuation'
+				},
+				rest: Prism.util.clone(Prism.languages.elixir)
+			}
+		}
+	};
+});