Do not produce any output if the output file will be empty
[binutils.git] / binutils / deflex.l
blob106cc7bf155ff4a73e17ad6a4e6d50ec8a5b90fc
1 %{/* deflex.l - Lexer for .def files */
3 /*   Copyright 1995, 1997, 1998, 1999, 2002, 2003 Free Software Foundation, Inc.
5 This file is part of GNU Binutils.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
22 /* Contributed by Steve Chamberlain
23                   sac@cygnus.com
26 #define DONTDECLARE_MALLOC
27 #include "libiberty.h"
28 #include "defparse.h"
29 #include "dlltool.h"
31 int linenumber;
35 "NAME"          { return NAME;}
36 "LIBRARY"       { return LIBRARY;}
37 "DESCRIPTION"   { return DESCRIPTION;}
38 "STACKSIZE"     { return STACKSIZE;}
39 "HEAPSIZE"      { return HEAPSIZE;}
40 "CODE"          { return CODE;}
41 "DATA"          { return DATA;}
42 "SECTIONS"      { return SECTIONS;}
43 "EXPORTS"       { return EXPORTS;}
44 "IMPORTS"       { return IMPORTS;}
45 "VERSION"       { return VERSIONK;}
46 "BASE"          { return BASE;}
47 "CONSTANT"      { return CONSTANT; }
48 "NONAME"        { return NONAME; }
49 "READ"          { return READ;}
50 "WRITE"         { return WRITE;}
51 "EXECUTE"       { return EXECUTE;}
52 "SHARED"        { return SHARED;}
53 "NONSHARED"     { return NONSHARED;}
54 "SINGLE"        { return SINGLE;}
55 "MULTIPLE"      { return MULTIPLE;}
56 "INITINSTANCE"  { return INITINSTANCE;}
57 "INITGLOBAL"    { return INITGLOBAL;}
58 "TERMINSTANCE"  { return TERMINSTANCE;}
59 "TERMGLOBAL"    { return TERMGLOBAL;}
61 [0-9][x0-9A-Fa-f]* { yylval.number = strtol (yytext,0,0); 
62                 return NUMBER; }
64 (@)?[A-Za-z$:\-\_?][A-Za-z0-9/$:\-\_@?]* {      
65                 yylval.id =  xstrdup (yytext);
66                 return ID;
67                 }
69 "\""[^\"]*"\"" {
70                 yylval.id = xstrdup (yytext+1);
71                 yylval.id[yyleng-2] = 0;
72                 return ID;
73                 }
75 "\'"[^\']*"\'" {
76                 yylval.id = xstrdup (yytext+1);
77                 yylval.id[yyleng-2] = 0;
78                 return ID;
79                 }
80 "*".*           { }
81 ";".*           { }
82 " "             { }
83 "\t"            { }
84 "\n"            { linenumber ++ ;}
85 "="             { return '=';}
86 "."             { return '.';}
87 "@"             { return '@';}
88 ","             { return ',';}
90 #ifndef yywrap
91 /* Needed for lex, though not flex. */
92 int yywrap(void) { return 1; }
93 #endif