* Implementation of GiNaC's ABC. */
/*
- * GiNaC Copyright (C) 1999-2003 Johannes Gutenberg University Mainz, Germany
+ * GiNaC Copyright (C) 1999-2004 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 "relational.h"
#include "operators.h"
#include "wildcard.h"
-#include "print.h"
#include "archive.h"
#include "utils.h"
namespace GiNaC {
-GINAC_IMPLEMENT_REGISTERED_CLASS(basic, void)
+GINAC_IMPLEMENT_REGISTERED_CLASS_OPT(basic, void,
+ print_func<print_context>(&basic::do_print).
+ print_func<print_tree>(&basic::do_print_tree).
+ print_func<print_python_repr>(&basic::do_print_python_repr))
//////////
// default constructor, destructor, copy constructor and assignment operator
/** basic copy constructor: implicitly assumes that the other class is of
* the exact same type (as it's used by duplicate()), so it can copy the
* tinfo_key and the hash value. */
-basic::basic(const basic & other) : tinfo_key(other.tinfo_key), flags(other.flags & ~status_flags::dynallocated), hashvalue(other.hashvalue), refcount(0)
+basic::basic(const basic & other) : tinfo_key(other.tinfo_key), flags(other.flags & ~status_flags::dynallocated), hashvalue(other.hashvalue)
{
GINAC_ASSERT(typeid(*this) == typeid(other));
}
// The other object is of a derived class, so clear the flags as they
// might no longer apply (especially hash_calculated). Oh, and don't
// copy the tinfo_key: it is already set correctly for this object.
- flags = 0;
+ fl &= ~(status_flags::evaluated | status_flags::expanded | status_flags::hash_calculated);
} else {
// The objects are of the exact same class, so copy the hash value.
hashvalue = other.hashvalue;
}
flags = fl;
- refcount = 0;
+ set_refcount(0);
return *this;
}
//////////
/** Construct object from archive_node. */
-basic::basic(const archive_node &n, lst &sym_lst) : flags(0), refcount(0)
+basic::basic(const archive_node &n, lst &sym_lst) : flags(0)
{
// Reconstruct tinfo_key from class name
std::string class_name;
// public
-/** Output to stream.
+/** Output to stream. This performs double dispatch on the dynamic type of
+ * *this and the dynamic type of the supplied print context.
* @param c print context object that describes the output formatting
* @param level value that is used to identify the precedence or indentation
* level for placing parentheses and formatting */
void basic::print(const print_context & c, unsigned level) const
{
- if (is_a<print_tree>(c)) {
+ print_dispatch(get_class_info(), c, level);
+}
+
+/** Like print(), but dispatch to the specified class. Can be used by
+ * implementations of print methods to dispatch to the method of the
+ * superclass.
+ *
+ * @see basic::print */
+void basic::print_dispatch(const registered_class_info & ri, const print_context & c, unsigned level) const
+{
+ // Double dispatch on object type and print_context type
+ const registered_class_info * reg_info = &ri;
+ const print_context_class_info * pc_info = &c.get_class_info();
+
+next_class:
+ const std::vector<print_functor> & pdt = reg_info->options.get_print_dispatch_table();
+
+next_context:
+ unsigned id = pc_info->options.get_id();
+ if (id >= pdt.size() || !(pdt[id].is_valid())) {
+
+ // Method not found, try parent print_context class
+ const print_context_class_info * parent_pc_info = pc_info->get_parent();
+ if (parent_pc_info) {
+ pc_info = parent_pc_info;
+ goto next_context;
+ }
+
+ // Method still not found, try parent class
+ const registered_class_info * parent_reg_info = reg_info->get_parent();
+ if (parent_reg_info) {
+ reg_info = parent_reg_info;
+ pc_info = &c.get_class_info();
+ goto next_class;
+ }
+
+ // Method still not found. This shouldn't happen because basic (the
+ // base class of the algebraic hierarchy) registers a method for
+ // print_context (the base class of the print context hierarchy),
+ // so if we end up here, there's something wrong with the class
+ // registry.
+ throw (std::runtime_error(std::string("basic::print(): method for ") + class_name() + "/" + c.class_name() + " not found"));
+
+ } else {
+
+ // Call method
+ pdt[id](*this, c, level);
+ }
+}
+
+/** Default output to stream. */
+void basic::do_print(const print_context & c, unsigned level) const
+{
+ c.s << "[" << class_name() << " object]";
+}
- c.s << std::string(level, ' ') << class_name()
- << std::hex << ", hash=0x" << hashvalue << ", flags=0x" << flags << std::dec
- << ", nops=" << nops()
- << std::endl;
- for (size_t i=0; i<nops(); ++i)
- op(i).print(c, level + static_cast<const print_tree &>(c).delta_indent);
+/** Tree output to stream. */
+void basic::do_print_tree(const print_tree & c, unsigned level) const
+{
+ c.s << std::string(level, ' ') << class_name() << " @" << this
+ << std::hex << ", hash=0x" << hashvalue << ", flags=0x" << flags << std::dec;
+ if (nops())
+ c.s << ", nops=" << nops();
+ c.s << std::endl;
+ for (size_t i=0; i<nops(); ++i)
+ op(i).print(c, level + c.delta_indent);
+}
- } else
- c.s << "[" << class_name() << " object]";
+/** Python parsable output to stream. */
+void basic::do_print_python_repr(const print_python_repr & c, unsigned level) const
+{
+ c.s << class_name() << "()";
}
/** Little wrapper around print to be called within a debugger.
this->print(print_tree(std::cerr));
}
-/** Return relative operator precedence (for parenthizing output). */
+/** Return relative operator precedence (for parenthezing output). */
unsigned basic::precedence() const
{
return 70;
return exvector(); // return an empty exvector
}
+ex basic::conjugate() const
+{
+ return *this;
+}
+
ex basic::eval_ncmul(const exvector & v) const
{
return hold_ncmul(v);
* 1 greater. */
int basic::compare(const basic & other) const
{
+#ifdef GINAC_COMPARE_STATISTICS
+ compare_statistics.total_basic_compares++;
+#endif
const unsigned hash_this = gethash();
const unsigned hash_other = other.gethash();
if (hash_this<hash_other) return -1;
if (hash_this>hash_other) return 1;
+#ifdef GINAC_COMPARE_STATISTICS
+ compare_statistics.compare_same_hashvalue++;
+#endif
const unsigned typeid_this = tinfo();
const unsigned typeid_other = other.tinfo();
// std::cout << std::endl;
// }
// return cmpval;
+#ifdef GINAC_COMPARE_STATISTICS
+ compare_statistics.compare_same_type++;
+#endif
return compare_same_type(other);
} else {
// std::cout << "hash collision, different types: "
* @see is_equal_same_type */
bool basic::is_equal(const basic & other) const
{
+#ifdef GINAC_COMPARE_STATISTICS
+ compare_statistics.total_basic_is_equals++;
+#endif
if (this->gethash()!=other.gethash())
return false;
+#ifdef GINAC_COMPARE_STATISTICS
+ compare_statistics.is_equal_same_hashvalue++;
+#endif
if (this->tinfo()!=other.tinfo())
return false;
GINAC_ASSERT(typeid(*this)==typeid(other));
+#ifdef GINAC_COMPARE_STATISTICS
+ compare_statistics.is_equal_same_type++;
+#endif
return is_equal_same_type(other);
}
* is not the case. */
void basic::ensure_if_modifiable() const
{
- if (refcount > 1)
+ if (get_refcount() > 1)
throw(std::runtime_error("cannot modify multiply referenced object"));
clearflag(status_flags::hash_calculated | status_flags::evaluated);
}
int max_recursion_level = 1024;
+
+#ifdef GINAC_COMPARE_STATISTICS
+compare_statistics_t::~compare_statistics_t()
+{
+ std::clog << "ex::compare() called " << total_compares << " times" << std::endl;
+ std::clog << "nontrivial compares: " << nontrivial_compares << " times" << std::endl;
+ std::clog << "basic::compare() called " << total_basic_compares << " times" << std::endl;
+ std::clog << "same hashvalue in compare(): " << compare_same_hashvalue << " times" << std::endl;
+ std::clog << "compare_same_type() called " << compare_same_type << " times" << std::endl;
+ std::clog << std::endl;
+ std::clog << "ex::is_equal() called " << total_is_equals << " times" << std::endl;
+ std::clog << "nontrivial is_equals: " << nontrivial_is_equals << " times" << std::endl;
+ std::clog << "basic::is_equal() called " << total_basic_is_equals << " times" << std::endl;
+ std::clog << "same hashvalue in is_equal(): " << is_equal_same_hashvalue << " times" << std::endl;
+ std::clog << "is_equal_same_type() called " << is_equal_same_type << " times" << std::endl;
+ std::clog << std::endl;
+ std::clog << "basic::gethash() called " << total_gethash << " times" << std::endl;
+ std::clog << "used cached hashvalue " << gethash_cached << " times" << std::endl;
+}
+
+compare_statistics_t compare_statistics;
+#endif
+
} // namespace GiNaC
git://www.ginac.de / ginac.git / blobdiff