2005-06-14 Graydon Hoare <graydon@redhat.com>

	* tapsets.h: New file.
	(derived_probe_builder): Callback for making derived probes.
	(match_key): Component of pattern-matching tree.
	(match_node): Other component of pattern-matching tree.
	* tapsets.cxx: Add pattern-matching system for probes.
	(alias_derived_probe): Skeleton for alias probes.
	(dwarf_derived_probe): Skeleton for dwarf probes.
	(register_standard_tapsets): Registry for standard tapsets.

1 files changed, 72 insertions, 0 deletions

diff --git a/tapsets.h b/tapsets.h
new file mode 100644
index 00000000..e1ca5f8d
--- /dev/null
+++ b/tapsets.h
@@ -0,0 +1,72 @@
+#ifndef TAPSETS_H
+#define TAPSETS_H
+
+// -*- C++ -*-
+// Copyright (C) 2005 Red Hat Inc.
+//
+// This file is part of systemtap, and is free software.  You can
+// redistribute it and/or modify it under the terms of the GNU General
+// Public License (GPL); either version 2, or (at your option) any
+// later version.
+
+#include "config.h"
+#include "staptree.h"
+#include "elaborate.h"
+#include "translate.h"
+#include <iostream>
+#include <sstream>
+#include <vector>
+#include <map>
+
+struct
+derived_probe_builder
+{
+  virtual derived_probe * build(probe * base, 
+				probe_point * location,
+				std::map<std::string, literal *> const & parameters) = 0;
+  virtual ~derived_probe_builder() {}
+};
+
+
+struct
+match_key
+{
+  std::string name;
+  bool have_parameter;
+  token_type parameter_type;
+
+  match_key(std::string const & n);
+  match_key(probe_point::component const & c);
+
+  match_key & with_number();
+  match_key & with_string();
+  std::string str() const;
+  bool operator<(match_key const & other) const;
+};
+
+
+class
+match_node
+{
+  std::map<match_key, match_node *> sub;
+  derived_probe_builder * end;
+
+ public:
+  match_node();
+  derived_probe_builder * find_builder(std::vector<probe_point::component *> const & components,
+				       unsigned pos,
+				       std::vector< std::pair<std::string, literal *> > & parameters);
+  
+  match_node & bind(match_key const & k);
+  match_node & bind(std::string const & k);
+  match_node & bind_str(std::string const & k);
+  match_node & bind_num(std::string const & k);
+  void bind(derived_probe_builder * e);
+};
+
+
+void 
+register_standard_tapsets(match_node & root);
+
+
+#endif // TAPSETS_H