add Rust lang (#269)

Author: dy-tea

highlight/langs.v

@@ -44,5 +44,6 @@ fn init_langs() []Lang {
 	langs_ << init_java()
 	langs_ << init_py()
 	langs_ << init_ts()
+	langs_ << init_rust()
 	return langs_
 }

highlight/rust.v

@@ -0,0 +1,70 @@
+module highlight
+
+// keywords suffixed with `reserved` are reserved by the compiler for future use
+
+fn init_rust() Lang {
+	return Lang{
+		name:            'Rust'
+		lang_extensions: ['rs']
+		line_comments:   '//'
+		mline_comments:  ['/*', '*/']
+		string_start:    ['"', '"']
+		color:           '#DDA483'
+		keywords:        [
+			"'static",
+			'abstract', // reserved
+			'as',
+			'async',
+			'await',
+			'become', // reserved
+			'box', // reserved
+			'break',
+			'const',
+			'continue',
+			'crate',
+			'do', // reserved
+			'dyn',
+			'else',
+			'enum',
+			'extern',
+			'false',
+			'final', // reserved
+			'fn',
+			'for',
+			'if',
+			'impl',
+			'in',
+			'let',
+			'loop',
+			'macro', // reserved
+			'macro_rules',
+			'match',
+			'mod',
+			'move',
+			'mut',
+			'override', // reserved
+			'pub',
+			'priv', // reserved
+			'ref',
+			'return',
+			'self',
+			'Self',
+			'static',
+			'struct',
+			'super',
+			'trait',
+			'true',
+			'try',
+			'type',
+			'typeof', // reserved
+			'union',
+			'unsafe',
+			'unsized', // reserved
+			'use',
+			'virtual', // reserved
+			'where',
+			'while',
+			'yield', // reserved
+		]
+	}
+}