X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=ginac%2Foperators.cpp;h=345d8f59eb1b552e22a41c37431762770962dbf5;hp=3a4229ba1dbb72e1535671e316fbd7a076079fea;hb=ffad02322624ab79fdad1a23a3aa83cd67376151;hpb=04f0c93e24cdb50f23cb3a6c0ecbeaac23b13ac0

diff --git a/ginac/operators.cpp b/ginac/operators.cpp
index 3a4229ba..345d8f59 100644
--- a/ginac/operators.cpp
+++ b/ginac/operators.cpp
@@ -3,7 +3,7 @@
  *  Implementation of GiNaC's overloaded operators. */
 
 /*
- *  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
@@ -20,6 +20,9 @@
  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
+#include <iostream>
+#include <iomanip>
+
 #include "operators.h"
 #include "numeric.h"
 #include "add.h"
@@ -28,7 +31,6 @@
 #include "ncmul.h"
 #include "relational.h"
 #include "print.h"
-#include "debugmsg.h"
 #include "utils.h"
 
 namespace GiNaC {
@@ -55,33 +57,29 @@ static inline const ex exmul(const ex & lh, const ex & 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 (new mul(lh,_ex_1))->setflag(status_flags::dynallocated);
 }
 
 // binary arithmetic operators ex with ex
 
 const ex operator+(const ex & lh, const ex & rh)
 {
-	debugmsg("operator+(ex,ex)",LOGLEVEL_OPERATOR);
 	return exadd(lh, rh);
 }
 
 const ex operator-(const ex & lh, const ex & rh)
 {
-	debugmsg("operator-(ex,ex)",LOGLEVEL_OPERATOR);
 	return exadd(lh, exminus(rh));
 }
 
 const ex operator*(const ex & lh, const ex & rh)
 {
-	debugmsg("operator*(ex,ex)",LOGLEVEL_OPERATOR);
 	return exmul(lh, rh);
 }
 
 const ex operator/(const ex & lh, const ex & rh)
 {
-	debugmsg("operator/(ex,ex)",LOGLEVEL_OPERATOR);
-	return exmul(lh, power(rh,_ex_1()));
+	return exmul(lh, power(rh,_ex_1));
 }
 
 
@@ -89,25 +87,21 @@ const ex operator/(const ex & lh, const ex & rh)
 
 const numeric operator+(const numeric & lh, const numeric & rh)
 {
-	debugmsg("operator+(numeric,numeric)",LOGLEVEL_OPERATOR);
 	return lh.add(rh);
 }
 
 const numeric operator-(const numeric & lh, const numeric & rh)
 {
-	debugmsg("operator-(numeric,numeric)",LOGLEVEL_OPERATOR);
 	return lh.sub(rh);
 }
 
 const numeric operator*(const numeric & lh, const numeric & rh)
 {
-	debugmsg("operator*(numeric,numeric)",LOGLEVEL_OPERATOR);
 	return lh.mul(rh);
 }
 
 const numeric operator/(const numeric & lh, const numeric & rh)
 {
-	debugmsg("operator/(numeric,ex)",LOGLEVEL_OPERATOR);
 	return lh.div(rh);
 }
 
@@ -116,26 +110,22 @@ const numeric operator/(const numeric & lh, const numeric & rh)
 
 ex & operator+=(ex & lh, const ex & rh)
 {
-	debugmsg("operator+=(ex,ex)",LOGLEVEL_OPERATOR);
 	return lh = exadd(lh, rh);
 }
 
 ex & operator-=(ex & lh, const ex & rh)
 {
-	debugmsg("operator-=(ex,ex)",LOGLEVEL_OPERATOR);
 	return lh = exadd(lh, exminus(rh));
 }
 
 ex & operator*=(ex & lh, const ex & rh)
 {
-	debugmsg("operator*=(ex,ex)",LOGLEVEL_OPERATOR);
 	return lh = exmul(lh, rh);
 }
 
 ex & operator/=(ex & lh, const ex & rh)
 {
-	debugmsg("operator/=(ex,ex)",LOGLEVEL_OPERATOR);
-	return lh = exmul(lh, power(rh,_ex_1()));
+	return lh = exmul(lh, power(rh,_ex_1));
 }
 
 
@@ -143,28 +133,24 @@ ex & operator/=(ex & lh, const ex & rh)
 
 numeric & operator+=(numeric & lh, const numeric & rh)
 {
-	debugmsg("operator+=(numeric,numeric)",LOGLEVEL_OPERATOR);
 	lh = lh.add(rh);
 	return lh;
 }
 
 numeric & operator-=(numeric & lh, const numeric & rh)
 {
-	debugmsg("operator-=(numeric,numeric)",LOGLEVEL_OPERATOR);
 	lh = lh.sub(rh);
 	return lh;
 }
 
 numeric & operator*=(numeric & lh, const numeric & rh)
 {
-	debugmsg("operator*=(numeric,numeric)",LOGLEVEL_OPERATOR);
 	lh = lh.mul(rh);
 	return lh;
 }
 
 numeric & operator/=(numeric & lh, const numeric & rh)
 {
-	debugmsg("operator/=(numeric,numeric)",LOGLEVEL_OPERATOR);
 	lh = lh.div(rh);
 	return lh;
 }
@@ -174,26 +160,22 @@ numeric & operator/=(numeric & lh, const numeric & rh)
 
 const ex operator+(const ex & lh)
 {
-	debugmsg("operator+(ex)",LOGLEVEL_OPERATOR);
 	return lh;
 }
 
 const ex operator-(const ex & lh)
 {
-	debugmsg("operator-(ex)",LOGLEVEL_OPERATOR);
 	return exminus(lh);
 }
 
 const numeric operator+(const numeric & lh)
 {
-	debugmsg("operator+(numeric)",LOGLEVEL_OPERATOR);
 	return lh;
 }
 
 const numeric operator-(const numeric & lh)
 {
-	debugmsg("operator-(numeric)",LOGLEVEL_OPERATOR);
-	return _num_1().mul(lh);
+	return _num_1.mul(lh);
 }
 
 
@@ -202,50 +184,44 @@ const numeric operator-(const numeric & lh)
 /** Expression prefix increment.  Adds 1 and returns incremented ex. */
 ex & operator++(ex & rh)
 {
-	debugmsg("operator++(ex)",LOGLEVEL_OPERATOR);
-	return rh = exadd(rh, _ex1());
+	return rh = exadd(rh, _ex1);
 }
 
 /** Expression prefix decrement.  Subtracts 1 and returns decremented ex. */
 ex & operator--(ex & rh)
 {
-	debugmsg("operator--(ex)",LOGLEVEL_OPERATOR);
-	return rh = exadd(rh, _ex_1());
+	return rh = exadd(rh, _ex_1);
 }
 
 /** Expression postfix increment.  Returns the ex and leaves the original
  *  incremented by 1. */
 const ex operator++(ex & lh, int)
 {
-	debugmsg("operator++(ex,int)",LOGLEVEL_OPERATOR);
 	ex tmp(lh);
-	lh = exadd(lh, _ex1());
+	lh = exadd(lh, _ex1);
 	return tmp;
 }
 
-/** Expression Postfix decrement.  Returns the ex and leaves the original
+/** Expression postfix decrement.  Returns the ex and leaves the original
  *  decremented by 1. */
 const ex operator--(ex & lh, int)
 {
-	debugmsg("operator--(ex,int)",LOGLEVEL_OPERATOR);
 	ex tmp(lh);
-	lh = exadd(lh, _ex_1());
+	lh = exadd(lh, _ex_1);
 	return tmp;
 }
 
 /** Numeric prefix increment.  Adds 1 and returns incremented number. */
 numeric& operator++(numeric & rh)
 {
-	debugmsg("operator++(numeric)",LOGLEVEL_OPERATOR);
-	rh = rh.add(_num1());
+	rh = rh.add(_num1);
 	return rh;
 }
 
 /** Numeric prefix decrement.  Subtracts 1 and returns decremented number. */
 numeric& operator--(numeric & rh)
 {
-	debugmsg("operator--(numeric)",LOGLEVEL_OPERATOR);
-	rh = rh.add(_num_1());
+	rh = rh.add(_num_1);
 	return rh;
 }
 
@@ -253,65 +229,123 @@ numeric& operator--(numeric & rh)
  *  incremented by 1. */
 const numeric operator++(numeric & lh, int)
 {
-	debugmsg("operator++(numeric,int)",LOGLEVEL_OPERATOR);
 	numeric tmp(lh);
-	lh = lh.add(_num1());
+	lh = lh.add(_num1);
 	return tmp;
 }
 
-/** Numeric Postfix decrement.  Returns the number and leaves the original
+/** Numeric postfix decrement.  Returns the number and leaves the original
  *  decremented by 1. */
 const numeric operator--(numeric & lh, int)
 {
-	debugmsg("operator--(numeric,int)",LOGLEVEL_OPERATOR);
 	numeric tmp(lh);
-	lh = lh.add(_num_1());
+	lh = lh.add(_num_1);
 	return tmp;
 }
 
 // binary relational operators ex with ex
 
-relational operator==(const ex & lh, const ex & rh)
+const relational operator==(const ex & lh, const ex & rh)
 {
-	debugmsg("operator==(ex,ex)",LOGLEVEL_OPERATOR);
 	return relational(lh,rh,relational::equal);
 }
 
-relational operator!=(const ex & lh, const ex & rh)
+const relational operator!=(const ex & lh, const ex & rh)
 {
-	debugmsg("operator!=(ex,ex)",LOGLEVEL_OPERATOR);
 	return relational(lh,rh,relational::not_equal);
 }
 
-relational operator<(const ex & lh, const ex & rh)
+const relational operator<(const ex & lh, const ex & rh)
 {
-	debugmsg("operator<(ex,ex)",LOGLEVEL_OPERATOR);
 	return relational(lh,rh,relational::less);
 }
 
-relational operator<=(const ex & lh, const ex & rh)
+const relational operator<=(const ex & lh, const ex & rh)
 {
-	debugmsg("operator<=(ex,ex)",LOGLEVEL_OPERATOR);
 	return relational(lh,rh,relational::less_or_equal);
 }
 
-relational operator>(const ex & lh, const ex & rh)
+const relational operator>(const ex & lh, const ex & rh)
 {
-	debugmsg("operator>(ex,ex)",LOGLEVEL_OPERATOR);
 	return relational(lh,rh,relational::greater);
 }
 
-relational operator>=(const ex & lh, const ex & rh)
+const relational operator>=(const ex & lh, const ex & rh)
 {
-	debugmsg("operator>=(ex,ex)",LOGLEVEL_OPERATOR);
 	return relational(lh,rh,relational::greater_or_equal);
 }
 
-// input/output stream operators
+// 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) = 0;
+	} else if (ev == std::ios_base::copyfmt_event && p != 0)
+		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;
+}
+
+// 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 == 0)
+		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 == 0)
+		e.print(print_dflt(os));
+	else
+		e.print(*p);
 	return os;
 }
 
@@ -320,4 +354,71 @@ std::istream & operator>>(std::istream & is, ex & e)
 	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