Source: ../../rtrmgr/template_tree.hh

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// -*- c-basic-offset: 4; tab-width: 8; indent-tabs-mode: t -*-

// Copyright (c) 2001-2006 International Computer Science Institute
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software")
// to deal in the Software without restriction, subject to the conditions
// listed in the XORP LICENSE file. These conditions include: you must
// preserve this copyright notice, and you cannot mention the copyright
// holders in advertising related to the Software without their permission.
// The Software is provided WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED. This
// notice is a summary of the XORP LICENSE file; the license in that file is
// legally binding.

// $XORP: xorp/rtrmgr/template_tree.hh,v 1.23 2006/03/16 00:06:02 pavlin Exp $

#ifndef __RTRMGR_TEMPLATE_TREE_HH__
#define __RTRMGR_TEMPLATE_TREE_HH__


#include <map>
#include <list>
#include <set>

#include "path_segment.hh"
#include "rtrmgr_error.hh"
#include "xorp_client.hh"


class ModuleCommand;
class TemplateTreeNode;
class ConfPathSegment;

class TemplateTree {
public:
    TemplateTree(const string& xorp_root_dir,
		 bool verbose)  throw (InitError);
    virtual ~TemplateTree();
    
    bool load_template_tree(const string& config_template_dir,
			    string& error_msg);
    bool parse_file(const string& filename, 
		    const string& config_template_dir, string& error_msg);
    
    void extend_path(const string& segment, bool is_tag);
    void pop_path() throw (ParseError);
    void push_path(int type, char* initializer);
    void add_untyped_node(const string& segment, bool is_tag) throw (ParseError);
    void add_node(const string& segment, int type, char* initializer);
    const TemplateTreeNode* find_node(const list<string>& path_segments) const;
    const TemplateTreeNode* 
        find_node_by_type(const list<ConfPathSegment>& path_segments) const;
    string path_as_string();
    void add_cmd(char* cmd) throw (ParseError);
    void add_cmd_action(const string& cmd, const list<string>& action)
	throw (ParseError);
    string tree_str() const;
    void register_module(const string& name, ModuleCommand* mc);
    ModuleCommand* find_module(const string& name);
    bool check_variable_name(const string& s) const;
    TemplateTreeNode* root_node() const { return _root_node; }
    const string& xorp_root_dir() const { return _xorp_root_dir; }
    bool verbose() const { return _verbose; }

protected:
    TemplateTreeNode* new_node(TemplateTreeNode* parent,
			       const string& path,
			       const string& varname,
			       int type,
			       const string& initializer);

    bool expand_template_tree(string& error_msg);
    bool check_template_tree(string& error_msg);


    TemplateTreeNode*	_root_node;
    TemplateTreeNode*	_current_node;
    map<string, ModuleCommand *> _registered_modules;
    list<PathSegment>	_path_segments;
    list<size_t>	_segment_lengths;
    string		_xorp_root_dir;	// The root of the XORP tree
    bool		_verbose;	// Set to true if output is verbose
};

#endif // __RTRMGR_TEMPLATE_TREE_HH__