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Add ifndef support.

This commit is contained in:
steve 2001-10-30 20:48:55 +00:00
parent ce61d12f60
commit a9aaca1ffa
1 changed files with 16 additions and 1 deletions
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17
ivlpp/lexor.lex
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@ -19,7 +19,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/ */
#if !defined(WINNT) && !defined(macintosh) #if !defined(WINNT) && !defined(macintosh)
#ident "$Id: lexor.lex,v 1.25 2001/09/15 18:27:04 steve Exp $" #ident "$Id: lexor.lex,v 1.26 2001/10/30 20:48:55 steve Exp $"
#endif #endif
# include "config.h" # include "config.h"
@ -200,7 +200,22 @@ W [ \t\b\f]+
} }
} }
^{W}?`ifndef{W}[a-zA-Z_][a-zA-Z0-9_]*.* {
char*name = strchr(yytext, '`');
assert(name);
name += 7;
name += strspn(name, " \t\b\f");
name[strcspn(name, " \t\b\f")] = 0;
if (!is_defined(name)) {
yy_push_state(IFDEF_TRUE);
} else {
yy_push_state(IFDEF_FALSE);
}
}
<IFDEF_FALSE,IFDEF_SUPR>^{W}?`ifdef{W}.* { yy_push_state(IFDEF_SUPR); } <IFDEF_FALSE,IFDEF_SUPR>^{W}?`ifdef{W}.* { yy_push_state(IFDEF_SUPR); }
<IFDEF_FALSE,IFDEF_SUPR>^{W}?`ifndef{W}.* { yy_push_state(IFDEF_SUPR); }
<IFDEF_TRUE>{W}?`else.* { BEGIN(IFDEF_FALSE); } <IFDEF_TRUE>{W}?`else.* { BEGIN(IFDEF_FALSE); }
<IFDEF_FALSE>{W}?`else.* { BEGIN(IFDEF_TRUE); } <IFDEF_FALSE>{W}?`else.* { BEGIN(IFDEF_TRUE); }