/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").  
 * You may not use this file except in compliance with the License.
 *
 * See LICENSE.txt included in this distribution for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at LICENSE.txt.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
 * Copyright (c) 2017, Chris Fraire <cfraire@me.com>.
 */

Identifier = [a-zA-Z_] [a-zA-Z0-9_-]*
SimpleVariable  = [\$] [a-zA-Z_] [a-zA-Z0-9_:-]*
ComplexVariable = [\$] "{" [^}]+  "}"

Label =  {WhspChar}* ":" {Identifier}

Operator = "-" [a-zA-Z]+
Break = "break" {WhspChar}+ {Identifier}
Continue = "continue" {WhspChar}+ {Identifier}
DataType = "[" [a-zA-Z_] [a-zA-Z0-9_.-]* "[]"? "]"

/* The following should be matched by the 'Number' pattern below.
 * '\$ [0-9]+' :
 *     $1 $2 $10 ... (references to a regex match operation)
 *
 * '0[xX][0-9a-fA-F]+[lL]?' :
 *     0xA 0X12A 0x12L ... (hex values with optional 'L'ong data type)
 *
 * '(\.[0-9]+|[0-9]+(\.[0-9]*)?)' :
 *     .45 0.45 12. 34  ... (integers and real numbers)
 *
 * '([eE][+-]*[0-9]+)?' :  (optional exponential)
 *     e+12 in 32.e+12
 *     E-231 in 123.456E-231
 *
 *  '[dDlL]?' : (optional 'double' or 'long' data type designation)
 *     1.20d 1.23450e1d 1.2345e-1D
 *
 *  {MultiplierSuffix} : (optional multiplier suffix)
 *    kb, Kb, KB (kilobyte, 1024)
 *    mb, Mb, MB (megabyte, 1024 x 1024)
 *    gb, Gb, GB (gigabyte, 1024 x 1024 x 1024)
 *    tb, Tb, TB (terabyte, 1024 x 1024 x 1024 x 1024)
 *    pb, Pb, PB (petabyte, 1024 x 1024 x 1024 x 1024 x 1024)
 *
 *    1kb 1.30Dmb 0x10Gb 1.4e23Tb 0x12Lpb
 */
RegExGroup = \$ [0-9]+
MultiplierSuffix = ([kKmMgGtTp][bB])?

Number = {RegExGroup} | (0[xX][0-9a-fA-F]+[lL]? |
    (\.[0-9]+|[0-9]+(\.[0-9]*)?)([eE][+-]*[0-9]+)?[dDlL]? ) {MultiplierSuffix}