* Implementation of GiNaC's overloaded operators. */
/*
- * GiNaC Copyright (C) 1999-2003 Johannes Gutenberg University Mainz, Germany
+ * GiNaC Copyright (C) 1999-2019 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
*
* 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
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "operators.h"
#include "print.h"
#include "utils.h"
+#include <iostream>
+
namespace GiNaC {
-/** Used internally by operator+() to add two ex objects together. */
+/** Used internally by operator+() to add two ex objects. */
static inline const ex exadd(const ex & lh, const ex & rh)
{
- return (new add(lh,rh))->setflag(status_flags::dynallocated);
+ return dynallocate<add>(lh, rh);
}
-/** Used internally by operator*() to multiply two ex objects together. */
+/** Used internally by operator*() to multiply two ex objects. */
static inline const ex exmul(const ex & lh, const ex & rh)
{
// Check if we are constructing a mul object or a ncmul object. Due to
// ncmul::eval()'s rule to pull out commutative elements we need to check
// only one of the elements.
if (rh.return_type()==return_types::commutative ||
- lh.return_type()==return_types::commutative)
- return (new mul(lh,rh))->setflag(status_flags::dynallocated);
- else
- return (new ncmul(lh,rh))->setflag(status_flags::dynallocated);
+ lh.return_type()==return_types::commutative) {
+ return dynallocate<mul>(lh, rh);
+ } else {
+ return dynallocate<ncmul>(lh, rh);
+ }
}
/** Used internally by operator-() and friends to change the sign of an argument. */
static inline const ex exminus(const ex & lh)
{
- return (new mul(lh,_ex_1))->setflag(status_flags::dynallocated);
+ return dynallocate<mul>(lh, _ex_1);
}
// binary arithmetic operators ex with ex
const numeric operator-(const numeric & lh)
{
- return _num_1.mul(lh);
+ return _num_1_p->mul(lh);
}
/** Numeric prefix increment. Adds 1 and returns incremented number. */
numeric& operator++(numeric & rh)
{
- rh = rh.add(_num1);
+ rh = rh.add(*_num1_p);
return rh;
}
/** Numeric prefix decrement. Subtracts 1 and returns decremented number. */
numeric& operator--(numeric & rh)
{
- rh = rh.add(_num_1);
+ rh = rh.add(*_num_1_p);
return rh;
}
const numeric operator++(numeric & lh, int)
{
numeric tmp(lh);
- lh = lh.add(_num1);
+ lh = lh.add(*_num1_p);
return tmp;
}
const numeric operator--(numeric & lh, int)
{
numeric tmp(lh);
- lh = lh.add(_num_1);
+ lh = lh.add(*_num_1_p);
return tmp;
}
const relational operator==(const ex & lh, const ex & rh)
{
- return relational(lh,rh,relational::equal);
+ return relational(lh, rh, relational::equal);
}
const relational operator!=(const ex & lh, const ex & rh)
{
- return relational(lh,rh,relational::not_equal);
+ return relational(lh, rh, relational::not_equal);
}
const relational operator<(const ex & lh, const ex & rh)
{
- return relational(lh,rh,relational::less);
+ return relational(lh, rh, relational::less);
}
const relational operator<=(const ex & lh, const ex & rh)
{
- return relational(lh,rh,relational::less_or_equal);
+ return relational(lh, rh, relational::less_or_equal);
}
const relational operator>(const ex & lh, const ex & rh)
{
- return relational(lh,rh,relational::greater);
+ return relational(lh, rh, relational::greater);
}
const relational operator>=(const ex & lh, const ex & rh)
{
- return relational(lh,rh,relational::greater_or_equal);
+ return relational(lh, rh, relational::greater_or_equal);
+}
+
+// input/output stream operators and manipulators
+
+static int my_ios_index()
+{
+ static int i = std::ios_base::xalloc();
+ return i;
+}
+
+// Stream format gets copied or destroyed
+static void my_ios_callback(std::ios_base::event ev, std::ios_base & s, int i)
+{
+ print_context *p = static_cast<print_context *>(s.pword(i));
+ if (ev == std::ios_base::erase_event) {
+ delete p;
+ s.pword(i) = nullptr;
+ } else if (ev == std::ios_base::copyfmt_event && p != nullptr)
+ s.pword(i) = p->duplicate();
+}
+
+enum {
+ callback_registered = 1
+};
+
+// Get print_context associated with stream, may return 0 if no context has
+// been associated yet
+static inline print_context *get_print_context(std::ios_base & s)
+{
+ return static_cast<print_context *>(s.pword(my_ios_index()));
+}
+
+// Set print_context associated with stream, retain options
+static void set_print_context(std::ios_base & s, const print_context & c)
+{
+ int i = my_ios_index();
+ long flags = s.iword(i);
+ if (!(flags & callback_registered)) {
+ s.register_callback(my_ios_callback, i);
+ s.iword(i) = flags | callback_registered;
+ }
+ print_context *p = static_cast<print_context *>(s.pword(i));
+ unsigned options = p ? p->options : c.options;
+ delete p;
+ p = c.duplicate();
+ p->options = options;
+ s.pword(i) = p;
}
-// input/output stream operators
+// Get options for print_context associated with stream
+static inline unsigned get_print_options(std::ios_base & s)
+{
+ print_context *p = get_print_context(s);
+ return p ? p->options : 0;
+}
+
+// Set options for print_context associated with stream
+static void set_print_options(std::ostream & s, unsigned options)
+{
+ print_context *p = get_print_context(s);
+ if (p == nullptr)
+ set_print_context(s, print_dflt(s, options));
+ else
+ p->options = options;
+}
std::ostream & operator<<(std::ostream & os, const ex & e)
{
- e.print(print_context(os));
+ print_context *p = get_print_context(os);
+ if (p == nullptr)
+ e.print(print_dflt(os));
+ else
+ e.print(*p);
+ return os;
+}
+
+std::ostream & operator<<(std::ostream & os, const exvector & e)
+{
+ print_context *p = get_print_context(os);
+ auto i = e.begin();
+ auto vend = e.end();
+
+ if (i==vend) {
+ os << "[]";
+ return os;
+ }
+
+ os << "[";
+ while (true) {
+ if (p == nullptr)
+ i -> print(print_dflt(os));
+ else
+ i -> print(*p);
+ ++i;
+ if (i==vend)
+ break;
+ os << ",";
+ }
+ os << "]";
+
+ return os;
+}
+
+std::ostream & operator<<(std::ostream & os, const exset & e)
+{
+ print_context *p = get_print_context(os);
+ auto i = e.begin();
+ auto send = e.end();
+
+ if (i==send) {
+ os << "<>";
+ return os;
+ }
+
+ os << "<";
+ while (true) {
+ if (p == nullptr)
+ i->print(print_dflt(os));
+ else
+ i->print(*p);
+ ++i;
+ if (i == send)
+ break;
+ os << ",";
+ }
+ os << ">";
+
+ return os;
+}
+
+std::ostream & operator<<(std::ostream & os, const exmap & e)
+{
+ print_context *p = get_print_context(os);
+ auto i = e.begin();
+ auto mend = e.end();
+
+ if (i==mend) {
+ os << "{}";
+ return os;
+ }
+
+ os << "{";
+ while (true) {
+ if (p == nullptr)
+ i->first.print(print_dflt(os));
+ else
+ i->first.print(*p);
+ os << "==";
+ if (p == nullptr)
+ i->second.print(print_dflt(os));
+ else
+ i->second.print(*p);
+ ++i;
+ if( i==mend )
+ break;
+ os << ",";
+ }
+ os << "}";
+
return os;
}
throw (std::logic_error("expression input from streams not implemented"));
}
+std::ostream & dflt(std::ostream & os)
+{
+ set_print_context(os, print_dflt(os));
+ set_print_options(os, 0);
+ return os;
+}
+
+std::ostream & latex(std::ostream & os)
+{
+ set_print_context(os, print_latex(os));
+ return os;
+}
+
+std::ostream & python(std::ostream & os)
+{
+ set_print_context(os, print_python(os));
+ return os;
+}
+
+std::ostream & python_repr(std::ostream & os)
+{
+ set_print_context(os, print_python_repr(os));
+ return os;
+}
+
+std::ostream & tree(std::ostream & os)
+{
+ set_print_context(os, print_tree(os));
+ return os;
+}
+
+std::ostream & csrc(std::ostream & os)
+{
+ set_print_context(os, print_csrc_double(os));
+ return os;
+}
+
+std::ostream & csrc_float(std::ostream & os)
+{
+ set_print_context(os, print_csrc_float(os));
+ return os;
+}
+
+std::ostream & csrc_double(std::ostream & os)
+{
+ set_print_context(os, print_csrc_double(os));
+ return os;
+}
+
+std::ostream & csrc_cl_N(std::ostream & os)
+{
+ set_print_context(os, print_csrc_cl_N(os));
+ return os;
+}
+
+std::ostream & index_dimensions(std::ostream & os)
+{
+ set_print_options(os, get_print_options(os) | print_options::print_index_dimensions);
+ return os;
+}
+
+std::ostream & no_index_dimensions(std::ostream & os)
+{
+ set_print_options(os, get_print_options(os) & ~print_options::print_index_dimensions);
+ return os;
+}
+
} // namespace GiNaC
git://www.ginac.de / ginac.git / blobdiff