1/* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * See LICENSE.txt included in this distribution for the specific 9 * language governing permissions and limitations under the License. 10 * 11 * When distributing Covered Code, include this CDDL HEADER in each 12 * file and include the License file at LICENSE.txt. 13 * If applicable, add the following below this CDDL HEADER, with the 14 * fields enclosed by brackets "[]" replaced with your own identifying 15 * information: Portions Copyright [yyyy] [name of copyright owner] 16 * 17 * CDDL HEADER END 18 */ 19 20/* 21 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. 22 * Portions Copyright (c) 2016 Nikolay Denev. 23 * Portions Copyright (c) 2017, Chris Fraire <cfraire@me.com>. 24 */ 25 26Identifier = ([\p{XID_Start}][\p{XID_Continue}]* | [_][\p{XID_Continue}]+) 27 28HEXDIG = [0-9A-Fa-f] 29DIGIT = [0-9] 30OCTDIG = [0-7] 31BINDIG = [01] 32 33Integer_suffix = [_]* ("u8" | "i8" | "u16" | "i16" | "u32" | "i32" | "u64" | 34 "i64" | "isize" | "usize") 35Fp_suffix = [_]* ("f32" | "f64") 36Decimal_integer = {DIGIT} ([_]*{DIGIT})* {Integer_suffix}? 37Hex_integer = 0[x] {HEXDIG} ([_]*{HEXDIG})* {Integer_suffix}? 38Octal_integer = 0[o] {OCTDIG} ([_]*{OCTDIG})* {Integer_suffix}? 39Binary_integer = 0[b] {BINDIG} ([_]*{BINDIG})* {Integer_suffix}? 40Floating_point = ({DIGIT} ([_]*{DIGIT})* \. {DIGIT} ([_]*{DIGIT})* | 41 {DIGIT} ([_]*{DIGIT})*) ([eE][+-]?{DIGIT}+)? {Fp_suffix}? 42Number = ({Decimal_integer} | {Hex_integer} | {Octal_integer} | 43 {Binary_integer} | {Floating_point}) 44