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dekker.one
1/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
2
3/*
4 * Main authors:
5 * Jip J. Dekker <jip.dekker@monash.edu>
6 */
7
8/* This Source Code Form is subject to the terms of the Mozilla Public
9 * License, v. 2.0. If a copy of the MPL was not distributed with this
10 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
11
12%option noyywrap
13
14%option prefix="regex_yy"
15
16%{
17#include <cstdlib>
18
19#define YY_DECL int yylex()
20
21#include <minizinc/support/regex.hh>
22
23%}
24
25%%
26
27[ \t\n] { /* ignore white space */ }
28[0-9]+ { regex_yylval.iValue = std::atoi(regex_yytext); return R_INTEGER; }
29"|" { return R_UNION; }
30"+" { return R_PLUS; }
31"*" { return R_STAR; }
32"(" { return R_GROUP_OPEN; }
33")" { return R_GROUP_CLOSE; }
34"?" { return R_OPTIONAL; }
35"{" { return R_QUANT_OPEN; }
36"}" { return R_QUANT_CLOSE; }
37"," { return R_COMMA; }
38"." { return R_ANY; }
39"[" { return R_CLASS_OPEN; }
40"]" { return R_CLASS_CLOSE; }
41"-" { return R_CLASS_RANGE; }
42"^" { return R_CLASS_NEG; }
43
44[A-Za-z][A-Za-z0-9_]* { regex_yylval.sValue = strdup(yytext); return R_IDENTIFIER; }
45"'"[^\\'\xa\xd\x0]*"'" { regex_yylval.sValue = strdup(yytext); return R_IDENTIFIER; }
46
47. {
48 /* Catch all */
49 throw std::runtime_error("Illegal token in regular expression: '" + std::string(regex_yytext) + "'");
50}
51
52%%