* Archiving of GiNaC expressions. */
/*
- * GiNaC Copyright (C) 1999-2001 Johannes Gutenberg University Mainz, Germany
+ * GiNaC Copyright (C) 1999-2003 Johannes Gutenberg University Mainz, Germany
*
* 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
#include "ex.h"
+#include <iosfwd>
#include <string>
#include <vector>
-#include <iostream>
+#include <map>
namespace GiNaC {
-class lst;
class archive;
/** Numerical ID value to refer to an archive_node. */
-typedef unsigned int archive_node_id;
+typedef unsigned archive_node_id;
/** Numerical ID value to refer to a string. */
-typedef unsigned int archive_atom;
+typedef unsigned archive_atom;
/** This class stores all properties needed to record/retrieve the state
struct property_info {
property_info() {}
property_info(property_type t, const std::string &n, unsigned c = 1) : type(t), name(n), count(c) {}
- ~property_info() {}
-
- property_info(const property_info &other) : type(other.type), name(other.name), count(other.count) {}
- const property_info &operator=(const property_info &other);
property_type type; /**< Data type of property. */
std::string name; /**< Name of property. */
archive_node() : a(*dummy_ar_creator()), has_expression(false) {} // hack for cint which always requires a default constructor
archive_node(archive &ar) : a(ar), has_expression(false) {}
archive_node(archive &ar, const ex &expr);
- ~archive_node() {}
- archive_node(const archive_node &other);
const archive_node &operator=(const archive_node &other);
/** Add property of type "bool" to node. */
void add_bool(const std::string &name, bool value);
/** Add property of type "unsigned int" to node. */
- void add_unsigned(const std::string &name, unsigned int value);
+ void add_unsigned(const std::string &name, unsigned value);
/** Add property of type "string" to node. */
void add_string(const std::string &name, const std::string &value);
/** Retrieve property of type "bool" from node.
* @return "true" if property was found, "false" otherwise */
- bool find_bool(const std::string &name, bool &ret) const;
+ bool find_bool(const std::string &name, bool &ret, unsigned index = 0) const;
/** Retrieve property of type "unsigned" from node.
* @return "true" if property was found, "false" otherwise */
- bool find_unsigned(const std::string &name, unsigned int &ret) const;
+ bool find_unsigned(const std::string &name, unsigned &ret, unsigned index = 0) const;
/** Retrieve property of type "string" from node.
* @return "true" if property was found, "false" otherwise */
- bool find_string(const std::string &name, std::string &ret) const;
+ bool find_string(const std::string &name, std::string &ret, unsigned index = 0) const;
/** Retrieve property of type "ex" from node.
* @return "true" if property was found, "false" otherwise */
- bool find_ex(const std::string &name, ex &ret, const lst &sym_lst, unsigned int index = 0) const;
+ bool find_ex(const std::string &name, ex &ret, lst &sym_lst, unsigned index = 0) const;
/** Retrieve property of type "ex" from node, returning the node of
* the sub-expression. */
- const archive_node &find_ex_node(const std::string &name, unsigned int index = 0) const;
+ const archive_node &find_ex_node(const std::string &name, unsigned index = 0) const;
/** Return vector of properties stored in node. */
void get_properties(propinfovector &v) const;
- ex unarchive(const lst &sym_lst) const;
+ ex unarchive(lst &sym_lst) const;
bool has_same_ex_as(const archive_node &other) const;
+ bool has_ex() const {return has_expression;}
+ ex get_ex() const {return e;}
- void forget(void);
+ void forget();
void printraw(std::ostream &os) const;
private:
- static archive* dummy_ar_creator(void);
+ static archive* dummy_ar_creator();
/** Archived property (data type, name and associated data) */
struct property {
property() {}
- property(archive_atom n, property_type t, unsigned int v) : type(t), name(n), value(v) {}
- ~property() {}
-
- property(const property &other) : type(other.type), name(other.name), value(other.value) {}
- const property &operator=(const property &other);
+ property(archive_atom n, property_type t, unsigned v) : type(t), name(n), value(v) {}
property_type type; /**< Data type of property. */
archive_atom name; /**< Name of property. */
- unsigned int value; /**< Stored value. */
+ unsigned value; /**< Stored value. */
};
/** Reference to the archive to which this node belongs. */
/** Retrieve expression from archive by index.
* @param sym_lst list of pre-defined symbols
* @see count_expressions */
- ex unarchive_ex(const lst &sym_lst, unsigned int index = 0) const;
+ ex unarchive_ex(const lst &sym_lst, unsigned index = 0) const;
/** Retrieve expression and its name from archive by index.
* @param sym_lst list of pre-defined symbols
* @param name receives the name of the expression
* @see count_expressions */
- ex unarchive_ex(const lst &sym_lst, std::string &name, unsigned int index = 0) const;
+ ex unarchive_ex(const lst &sym_lst, std::string &name, unsigned index = 0) const;
/** Return number of archived expressions. */
- unsigned int num_expressions(void) const;
+ unsigned num_expressions() const;
/** Return reference to top node of an expression specified by index. */
- const archive_node &get_top_node(unsigned int index = 0) const;
+ const archive_node &get_top_node(unsigned index = 0) const;
/** Clear all archived expressions. */
- void clear(void);
+ void clear();
archive_node_id add_node(const archive_node &n);
archive_node &get_node(archive_node_id id);
- void forget(void);
+ void forget();
void printraw(std::ostream &os) const;
private:
private:
/** Vector of atomized strings (using a vector allows faster unarchiving). */
mutable std::vector<std::string> atoms;
+
+ /** Map of stored expressions to nodes for faster archiving */
+ typedef std::map<ex, archive_node_id, ex_is_less>::iterator mapit;
+ mutable std::map<ex, archive_node_id, ex_is_less> exprtable;
};