gdb: add target_ops::supports_displaced_step

[deliverable/binutils-gdb.git] / gdb / gdb_regex.h

diff --git a/gdb/gdb_regex.h b/gdb/gdb_regex.h
index 27a570a1f4097ee4c3c82aca790e59b88849e490..311cb3fd89dc1704f6dcf876dad3261765d2a082 100644 (file)
--- a/gdb/gdb_regex.h
+++ b/gdb/gdb_regex.h
@@ -1,11 +1,11 @@
-/* Portable <regex.h>
-   Copyright 2000, 2001 Free Software Foundation, Inc.
+/* Portable <regex.h>.
+   Copyright (C) 2000-2020 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2 of the License, or
+   the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
@@ -14,17 +14,50 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #ifndef GDB_REGEX_H
-#define GDB_REGEX_H
+#define GDB_REGEX_H 1
 
 #ifdef USE_INCLUDED_REGEX
-#include "xregex.h"
+# include "xregex.h"
 #else
-#include <regex.h>
+/* Request 4.2 BSD regex functions.  */
+# define _REGEX_RE_COMP
+# include <regex.h>
 #endif
 
-#endif /* gdb_regex.h */
+/* A compiled regex.  This is mainly a wrapper around regex_t.  The
+   the constructor throws on regcomp error and the destructor is
+   responsible for calling regfree.  The former means that it's not
+   possible to create an instance of compiled_regex that isn't
+   compiled, hence the name.  */
+class compiled_regex
+{
+public:
+  /* Compile a regexp and throw an exception on error, including
+     MESSAGE.  REGEX and MESSAGE must not be NULL.  */
+  compiled_regex (const char *regex, int cflags,
+                 const char *message)
+    ATTRIBUTE_NONNULL (2) ATTRIBUTE_NONNULL (4);
+
+  ~compiled_regex ();
+
+  DISABLE_COPY_AND_ASSIGN (compiled_regex);
+
+  /* Wrapper around ::regexec.  */
+  int exec (const char *string,
+           size_t nmatch, regmatch_t pmatch[],
+           int eflags) const;
+
+  /* Wrapper around ::re_search.  (Not const because re_search's
+     regex_t parameter isn't either.)  */
+  int search (const char *string, int size, int startpos,
+             int range, struct re_registers *regs);
+
+private:
+  /* The compiled pattern.  */
+  regex_t m_pattern;
+};
+
+#endif /* not GDB_REGEX_H */