feat(values): Adding a static value node

src/resolver/parser.js

@@ -4,7 +4,7 @@ import Matcher from '../graph/matching/matcher';
 import TokenNode from '../graph/token';
 import ValueNode from './value';
 
-import { LanguageSpecificValue, ParsingValue, ValueMatcher } from '../values/base';
+import { LanguageSpecificValue } from '../values/base';
 import { isDeepEqual } from '../utils/equality';
 
 const VALUE = /{([a-zA-Z0-9]+)}/g;
@@ -78,7 +78,7 @@ export default class ResolverParser extends Builder {
 				throw new Error('No type registered for ' + id);
 			}
 
-			let nextNode = value instanceof ParsingValue || value instanceof ValueMatcher
+			let nextNode = value.toNode
 				? value.toNode(id)
 				: new ValueNode(id, value);
 

src/resolver/value-static.js

@@ -0,0 +1,25 @@
+import { isDeepEqual } from '../utils/equality';
+
+import Node from '../graph/node';
+
+export default class ValueStatic extends Node {
+	constructor(id, value) {
+		super();
+
+		this.id = id;
+		this.value = value;
+	}
+
+	equals(o) {
+		return o instanceof ValueStatic && this.id.equals(o.id)
+			&& isDeepEqual(this.value, o.value);
+	}
+
+	match(encounter) {
+		return encounter.next(0, 0, { id: this.id, value: this.value });
+	}
+
+	toString() {
+		return 'ValueStatic[' + this.id + '=' + this.value + ']';
+	}
+}

src/values/index.js

@@ -14,6 +14,7 @@ export { default as integer } from './integer';
 export { default as number } from './number';
 export { default as options } from './options';
 export { default as ordinal } from './ordinal';
+export { default as staticValue } from './static';
 export { default as temperature } from './temperature';
 export { default as timeDuration } from './time-duration';
 export { default as time } from './time';

src/values/static.js

@@ -0,0 +1,5 @@
+import ValueStatic from '../resolver/value-static';
+
+export default function(id, value) {
+	return new ValueStatic(id, value);
+}