Emoji support in profile (#3514)

* Emoji in profile

* Add emojis to fields

src/mfm/parse.ts

@@ -1,13 +1,13 @@
-import parser, { Node } from './parser';
+import parser, { Node, plainParser } from './parser';
 import * as A from '../prelude/array';
 import * as S from '../prelude/string';
 
-export default (source: string): Node[] => {
+export default (source: string, plainText = false): Node[] => {
 	if (source == null || source == '') {
 		return null;
 	}
 
-	let nodes: Node[] = parser.root.tryParse(source);
+	let nodes: Node[] = plainText ? plainParser.root.tryParse(source) : parser.root.tryParse(source);
 
 	const combineText = (es: Node[]): Node =>
 		({ name: 'text', props: { text: S.concat(es.map(e => e.props.text)) } });

src/mfm/parser.ts

@@ -64,6 +64,29 @@ const newline = P((input, i) => {
 	}
 });
 
+export const plainParser = P.createLanguage({
+	root: r => P.alt(
+		r.emoji,
+		r.text
+	).atLeast(1),
+
+	text: () => P.any.map(x => makeNode('text', { text: x })),
+
+	//#region Emoji
+	emoji: r =>
+		P.alt(
+			P.regexp(/:([a-z0-9_+-]+):/i, 1)
+			.map(x => makeNode('emoji', {
+				name: x
+			})),
+			P.regexp(emojiRegex)
+			.map(x => makeNode('emoji', {
+				emoji: x
+			})),
+		),
+	//#endregion
+});
+
 const mfm = P.createLanguage({
 	root: r => P.alt(
 		r.big,