bitmark-grammar/src/typescript-es6/antlr4es6/misc/Character.ts

A bitmark parser

/*!
 * Copyright 2016 The ANTLR Project. All rights reserved.
 * Licensed under the BSD-3-Clause license. See LICENSE file in the project root for license information.
 */

export function isHighSurrogate(ch: number): boolean {
	return ch >= 0xD800 && ch <= 0xDBFF;
}

export function isLowSurrogate(ch: number): boolean {
	return ch >= 0xDC00 && ch <= 0xDFFF;
}

export function isSupplementaryCodePoint(ch: number): boolean {
	return ch >= 0x10000;
}