xref: /OpenGrok/opengrok-indexer/src/main/jflex/analysis/r/R.lexh (revision d219b4cea555a12b602d2d5518daa22134ad4879)
1*d219b4ceSAdam Hornacek/*
2*d219b4ceSAdam Hornacek * CDDL HEADER START
3*d219b4ceSAdam Hornacek *
4*d219b4ceSAdam Hornacek * The contents of this file are subject to the terms of the
5*d219b4ceSAdam Hornacek * Common Development and Distribution License (the "License").
6*d219b4ceSAdam Hornacek * You may not use this file except in compliance with the License.
7*d219b4ceSAdam Hornacek *
8*d219b4ceSAdam Hornacek * See LICENSE.txt included in this distribution for the specific
9*d219b4ceSAdam Hornacek * language governing permissions and limitations under the License.
10*d219b4ceSAdam Hornacek *
11*d219b4ceSAdam Hornacek * When distributing Covered Code, include this CDDL HEADER in each
12*d219b4ceSAdam Hornacek * file and include the License file at LICENSE.txt.
13*d219b4ceSAdam Hornacek * If applicable, add the following below this CDDL HEADER, with the
14*d219b4ceSAdam Hornacek * fields enclosed by brackets "[]" replaced with your own identifying
15*d219b4ceSAdam Hornacek * information: Portions Copyright [yyyy] [name of copyright owner]
16*d219b4ceSAdam Hornacek *
17*d219b4ceSAdam Hornacek * CDDL HEADER END
18*d219b4ceSAdam Hornacek */
19*d219b4ceSAdam Hornacek
20*d219b4ceSAdam Hornacek/*
21*d219b4ceSAdam Hornacek * Copyright (c) 2010, 2016, Oracle and/or its affiliates. All rights reserved.
22*d219b4ceSAdam Hornacek * Portions Copyright (c) 2017, 2019-2020, Chris Fraire <cfraire@me.com>.
23*d219b4ceSAdam Hornacek */
24*d219b4ceSAdam Hornacek
25*d219b4ceSAdam HornacekMaybeWhsp     = {WhspChar}*
26*d219b4ceSAdam Hornacek
27*d219b4ceSAdam HornacekIdentifier = (\p{L} {idchar}* | "." [{idchar}--{decimal}] {idchar}*)
28*d219b4ceSAdam Hornacekidchar = [\p{L}{decimal}\._]
29*d219b4ceSAdam Hornacek
30*d219b4ceSAdam HornacekNumber = ({Numeric_literal} | {Fractional_literal} | {Hex_literal}) [Li]?
31*d219b4ceSAdam HornacekNumeric_literal = {decimal}+ ("." {decimal}+)? ({expmark} {decimal}+)?
32*d219b4ceSAdam HornacekFractional_literal = "." {decimal}+ ({expmark} {decimal}+)?
33*d219b4ceSAdam HornacekHex_literal = 0[Xx]{hexdigit}+ ("." {hexdigit}+)? ([Pp] [-+]? {decimal}+)?
34*d219b4ceSAdam Hornacekdecimal = [0-9]
35*d219b4ceSAdam Hornacekexpmark = [eE] [\+\-]?
36*d219b4ceSAdam Hornacekhexdigit = [0-9a-fA-F]
37*d219b4ceSAdam Hornacek
38*d219b4ceSAdam HornacekFileExt = [Rr] ([Dd][Aa][Tt][Aa] | [Dd][AaSs])?
39*d219b4ceSAdam HornacekFile = [a-zA-Z]{FNameChar}* "." {FileExt}
40*d219b4ceSAdam Hornacek
41*d219b4ceSAdam Hornacek/*
42*d219b4ceSAdam Hornacek * YYINITIAL : base scanning state
43*d219b4ceSAdam Hornacek * SCOMMENT : single-line comment
44*d219b4ceSAdam Hornacek * QSTRING: literal string expression delimited by apostrophes
45*d219b4ceSAdam Hornacek * STRING: literal string expression delimited by quotation marks
46*d219b4ceSAdam Hornacek */
47*d219b4ceSAdam Hornacek%state SCOMMENT QSTRING STRING
48