X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=ginac%2Fcontainer.h;h=2459b364ffb0d36c70004f530cdc1cd147dd1751;hp=88ccd6a0adec63d4800abea17db8cd36d327d701;hb=3db194853d3dd2719231b83e4956cf6bcbe53627;hpb=757406e244f4f257aafaa0f355d5376122cea10e

diff --git a/ginac/container.h b/ginac/container.h
index 88ccd6a0..2459b364 100644
--- a/ginac/container.h
+++ b/ginac/container.h
@@ -28,6 +28,7 @@
 #include <algorithm>
 #include <vector>
 #include <list>
+#include <memory>
 
 #include "ex.h"
 #include "print.h"
@@ -66,6 +67,64 @@ template <>
 inline void container_storage<std::vector>::reserve(std::vector<ex> & v, size_t n) { v.reserve(n); }
 
 
+/** Helper template to allow initialization of containers via an overloaded
+ *  comma operator (idea stolen from Blitz++). */
+template <typename T, typename STLT>
+class container_init {
+public:
+	container_init(STLT & s) : stlt(s) {}
+
+	container_init<T, STLT> operator,(const T & x)
+	{
+		stlt.push_back(x);
+		return container_init<T, STLT>(stlt);
+	}
+
+	// The following specializations produce much tighter code than the
+	// general case above
+
+	container_init<T, STLT> operator,(int x)
+	{
+		stlt.push_back(x);
+		return container_init<T, STLT>(stlt);
+	}
+
+	container_init<T, STLT> operator,(unsigned int x)
+	{
+		stlt.push_back(x);
+		return container_init<T, STLT>(stlt);
+	}
+
+	container_init<T, STLT> operator,(long x)
+	{
+		stlt.push_back(x);
+		return container_init<T, STLT>(stlt);
+	}
+
+	container_init<T, STLT> operator,(unsigned long x)
+	{
+		stlt.push_back(x);
+		return container_init<T, STLT>(stlt);
+	}
+
+	container_init<T, STLT> operator,(double x)
+	{
+		stlt.push_back(x);
+		return container_init<T, STLT>(stlt);
+	}
+
+	container_init<T, STLT> operator,(const symbol & x)
+	{
+		stlt.push_back(T(x));
+		return container_init<T, STLT>(stlt);
+	}
+
+private:
+	container_init();
+	STLT & stlt;
+};
+
+
 /** Wrapper template for making GiNaC classes out of STL containers. */
 template <template <class> class C>
 class container : public basic, public container_storage<C> {
@@ -80,6 +139,7 @@ public:
 protected:
 	// helpers
 	static unsigned get_tinfo() { return TINFO_fail; }
+	static unsigned get_default_flags() { return 0; }
 	static char get_open_delim() { return '('; }
 	static char get_close_delim() { return ')'; }
 
@@ -87,33 +147,42 @@ protected:
 public:
 	container(STLT const & s, bool discardable = false) : inherited(get_tinfo())
 	{
+		setflag(get_default_flags());
+
 		if (discardable)
 			this->seq.swap(const_cast<STLT &>(s));
 		else
 			this->seq = s;
 	}
 
-	explicit container(STLT * vp) : inherited(get_tinfo())
+	explicit container(std::auto_ptr<STLT> vp) : inherited(get_tinfo())
 	{
-		GINAC_ASSERT(vp);
+		setflag(get_default_flags());
 		this->seq.swap(*vp);
-		delete vp;
 	}
 
 	container(exvector::const_iterator b, exvector::const_iterator e)
-	 : inherited(get_tinfo()), container_storage<C>(b, e) {}
+	 : inherited(get_tinfo()), container_storage<C>(b, e)
+	{
+		setflag(get_default_flags());
+	}
 
 	explicit container(const ex & p1)
-	 : inherited(get_tinfo()), container_storage<C>(1, p1) {}
+	 : inherited(get_tinfo()), container_storage<C>(1, p1)
+	{
+		setflag(get_default_flags());
+	}
 
 	container(const ex & p1, const ex & p2) : inherited(get_tinfo())
 	{
+		setflag(get_default_flags());
 		reserve(this->seq, 2);
 		this->seq.push_back(p1); this->seq.push_back(p2);
 	}
 
 	container(const ex & p1, const ex & p2, const ex & p3) : inherited(get_tinfo())
 	{
+		setflag(get_default_flags());
 		reserve(this->seq, 3);
 		this->seq.push_back(p1); this->seq.push_back(p2); this->seq.push_back(p3);
 	}
@@ -121,6 +190,7 @@ public:
 	container(const ex & p1, const ex & p2, const ex & p3,
 	                   const ex & p4) : inherited(get_tinfo())
 	{
+		setflag(get_default_flags());
 		reserve(this->seq, 4);
 		this->seq.push_back(p1); this->seq.push_back(p2); this->seq.push_back(p3);
 		this->seq.push_back(p4);
@@ -129,6 +199,7 @@ public:
 	container(const ex & p1, const ex & p2, const ex & p3,
 	          const ex & p4, const ex & p5) : inherited(get_tinfo())
 	{
+		setflag(get_default_flags());
 		reserve(this->seq, 5);
 		this->seq.push_back(p1); this->seq.push_back(p2); this->seq.push_back(p3);
 		this->seq.push_back(p4); this->seq.push_back(p5);
@@ -137,6 +208,7 @@ public:
 	container(const ex & p1, const ex & p2, const ex & p3,
 	          const ex & p4, const ex & p5, const ex & p6) : inherited(get_tinfo())
 	{
+		setflag(get_default_flags());
 		reserve(this->seq, 6);
 		this->seq.push_back(p1); this->seq.push_back(p2); this->seq.push_back(p3);
 		this->seq.push_back(p4); this->seq.push_back(p5); this->seq.push_back(p6);
@@ -146,6 +218,7 @@ public:
 	          const ex & p4, const ex & p5, const ex & p6,
 	          const ex & p7) : inherited(get_tinfo())
 	{
+		setflag(get_default_flags());
 		reserve(this->seq, 7);
 		this->seq.push_back(p1); this->seq.push_back(p2); this->seq.push_back(p3);
 		this->seq.push_back(p4); this->seq.push_back(p5); this->seq.push_back(p6);
@@ -156,6 +229,7 @@ public:
 	          const ex & p4, const ex & p5, const ex & p6,
 	          const ex & p7, const ex & p8) : inherited(get_tinfo())
 	{
+		setflag(get_default_flags());
 		reserve(this->seq, 8);
 		this->seq.push_back(p1); this->seq.push_back(p2); this->seq.push_back(p3);
 		this->seq.push_back(p4); this->seq.push_back(p5); this->seq.push_back(p6);
@@ -166,6 +240,7 @@ public:
 	          const ex & p4, const ex & p5, const ex & p6,
 	          const ex & p7, const ex & p8, const ex & p9) : inherited(get_tinfo())
 	{
+		setflag(get_default_flags());
 		reserve(this->seq, 9);
 		this->seq.push_back(p1); this->seq.push_back(p2); this->seq.push_back(p3);
 		this->seq.push_back(p4); this->seq.push_back(p5); this->seq.push_back(p6);
@@ -177,6 +252,7 @@ public:
 	          const ex & p7, const ex & p8, const ex & p9,
 	          const ex & p10) : inherited(get_tinfo())
 	{
+		setflag(get_default_flags());
 		reserve(this->seq, 10);
 		this->seq.push_back(p1); this->seq.push_back(p2); this->seq.push_back(p3);
 		this->seq.push_back(p4); this->seq.push_back(p5); this->seq.push_back(p6);
@@ -189,6 +265,7 @@ public:
 	          const ex & p7, const ex & p8, const ex & p9,
 	          const ex & p10, const ex & p11) : inherited(get_tinfo())
 	{
+		setflag(get_default_flags());
 		reserve(this->seq, 11);
 		this->seq.push_back(p1); this->seq.push_back(p2); this->seq.push_back(p3);
 		this->seq.push_back(p4); this->seq.push_back(p5); this->seq.push_back(p6);
@@ -201,6 +278,7 @@ public:
 	          const ex & p7, const ex & p8, const ex & p9,
 	          const ex & p10, const ex & p11, const ex & p12) : inherited(get_tinfo())
 	{
+		setflag(get_default_flags());
 		reserve(this->seq, 12);
 		this->seq.push_back(p1); this->seq.push_back(p2); this->seq.push_back(p3);
 		this->seq.push_back(p4); this->seq.push_back(p5); this->seq.push_back(p6);
@@ -214,6 +292,7 @@ public:
 	          const ex & p10, const ex & p11, const ex & p12,
 	          const ex & p13) : inherited(get_tinfo())
 	{
+		setflag(get_default_flags());
 		reserve(this->seq, 13);
 		this->seq.push_back(p1); this->seq.push_back(p2); this->seq.push_back(p3);
 		this->seq.push_back(p4); this->seq.push_back(p5); this->seq.push_back(p6);
@@ -228,6 +307,7 @@ public:
 	          const ex & p10, const ex & p11, const ex & p12,
 	          const ex & p13, const ex & p14) : inherited(get_tinfo())
 	{
+		setflag(get_default_flags());
 		reserve(this->seq, 14);
 		this->seq.push_back(p1); this->seq.push_back(p2); this->seq.push_back(p3);
 		this->seq.push_back(p4); this->seq.push_back(p5); this->seq.push_back(p6);
@@ -242,6 +322,7 @@ public:
 	          const ex & p10, const ex & p11, const ex & p12,
 	          const ex & p13, const ex & p14, const ex & p15) : inherited(get_tinfo())
 	{
+		setflag(get_default_flags());
 		reserve(this->seq, 15);
 		this->seq.push_back(p1); this->seq.push_back(p2); this->seq.push_back(p3);
 		this->seq.push_back(p4); this->seq.push_back(p5); this->seq.push_back(p6);
@@ -257,6 +338,7 @@ public:
 	          const ex & p13, const ex & p14, const ex & p15,
 	          const ex & p16) : inherited(get_tinfo())
 	{
+		setflag(get_default_flags());
 		reserve(this->seq, 16);
 		this->seq.push_back(p1); this->seq.push_back(p2); this->seq.push_back(p3);
 		this->seq.push_back(p4); this->seq.push_back(p5); this->seq.push_back(p6);
@@ -266,9 +348,17 @@ public:
 		this->seq.push_back(p16);
 	}
 
+	// First step of initialization of container with a comma-separated
+	// sequence of expressions. Subsequent steps are handled by
+	// container_init<>::operator,().
+	container_init<ex, STLT> operator=(const ex & x)
+	{
+		this->seq.push_back(x);
+		return container_init<ex, STLT>(this->seq);
+	}
+
 	// functions overriding virtual functions from base classes
 public:
-	void print(const print_context & c, unsigned level = 0) const;
 	bool info(unsigned inf) const { return inherited::info(inf); }
 	unsigned precedence() const { return 10; }
 	size_t nops() const { return this->seq.size(); }
@@ -288,7 +378,7 @@ protected:
 
 	/** Similar to duplicate(), but with a preset sequence (which gets
 	 *  deleted). Must be overridden by derived classes. */
-	virtual ex thiscontainer(STLT * vp) const { return container(vp); }
+	virtual ex thiscontainer(std::auto_ptr<STLT> vp) const { return container(vp); }
 
 	virtual void printseq(const print_context & c, char openbracket, char delim,
 	                      char closebracket, unsigned this_precedence,
@@ -327,18 +417,27 @@ public:
 	const_reverse_iterator rend() const {return this->seq.rend();}
 
 protected:
+	void do_print(const print_context & c, unsigned level) const;
+	void do_print_tree(const print_tree & c, unsigned level) const;
+	void do_print_python(const print_python & c, unsigned level) const;
+	void do_print_python_repr(const print_python_repr & c, unsigned level) const;
 	STLT evalchildren(int level) const;
-	STLT *subschildren(const exmap & m, unsigned options = 0) const;
+	std::auto_ptr<STLT> subschildren(const exmap & m, unsigned options = 0) const;
 };
 
 /** Default constructor */
 template <template <class> class C>
-container<C>::container() : inherited(get_tinfo()) {}
+container<C>::container() : inherited(get_tinfo())
+{
+	setflag(get_default_flags());
+}
 
 /** Construct object from archive_node. */
 template <template <class> class C>
 container<C>::container(const archive_node &n, lst &sym_lst) : inherited(n, sym_lst)
 {
+	setflag(get_default_flags());
+
 	for (unsigned int i=0; true; i++) {
 		ex e;
 		if (n.find_ex("seq", e, sym_lst, i))
@@ -368,29 +467,38 @@ void container<C>::archive(archive_node &n) const
 }
 
 template <template <class> class C>
-void container<C>::print(const print_context & c, unsigned level) const
+void container<C>::do_print(const print_context & c, unsigned level) const
 {
-	if (is_a<print_tree>(c)) {
-		c.s << std::string(level, ' ') << class_name()
-		    << std::hex << ", hash=0x" << hashvalue << ", flags=0x" << flags << std::dec
-		    << ", nops=" << nops()
-		    << std::endl;
-		unsigned delta_indent = static_cast<const print_tree &>(c).delta_indent;
-		const_iterator i = this->seq.begin(), end = this->seq.end();
-		while (i != end) {
-			i->print(c, level + delta_indent);
-			++i;
-		}
-		c.s << std::string(level + delta_indent,' ') << "=====" << std::endl;
-	} else if (is_a<print_python>(c)) {
-		printseq(c, '[', ',', ']', precedence(), precedence()+1);
-	} else if (is_a<print_python_repr>(c)) {
-		c.s << class_name ();
-		printseq(c, '(', ',', ')', precedence(), precedence()+1);
-	} else {
-		// always print brackets around seq, ignore upper_precedence
-		printseq(c, get_open_delim(), ',', get_close_delim(), precedence(), precedence()+1);
+	// always print brackets around seq, ignore upper_precedence
+	printseq(c, get_open_delim(), ',', get_close_delim(), precedence(), precedence()+1);
+}
+
+template <template <class> class C>
+void container<C>::do_print_tree(const print_tree & c, unsigned level) const
+{
+	c.s << std::string(level, ' ') << class_name()
+	    << std::hex << ", hash=0x" << hashvalue << ", flags=0x" << flags << std::dec
+	    << ", nops=" << nops()
+	    << std::endl;
+	const_iterator i = this->seq.begin(), end = this->seq.end();
+	while (i != end) {
+		i->print(c, level + c.delta_indent);
+		++i;
 	}
+	c.s << std::string(level + c.delta_indent,' ') << "=====" << std::endl;
+}
+
+template <template <class> class C>
+void container<C>::do_print_python(const print_python & c, unsigned level) const
+{
+	printseq(c, '[', ',', ']', precedence(), precedence()+1);
+}
+
+template <template <class> class C>
+void container<C>::do_print_python_repr(const print_python_repr & c, unsigned level) const
+{
+	c.s << class_name();
+	printseq(c, '(', ',', ')', precedence(), precedence()+1);
 }
 
 template <template <class> class C>
@@ -426,8 +534,8 @@ ex container<C>::eval(int level) const
 template <template <class> class C>
 ex container<C>::subs(const exmap & m, unsigned options) const
 {
-	STLT *vp = subschildren(m, options);
-	if (vp)
+	std::auto_ptr<STLT> vp = subschildren(m, options);
+	if (vp.get())
 		return ex_to<basic>(thiscontainer(vp)).subs_one_level(m, options);
 	else
 		return subs_one_level(m, options);
@@ -587,11 +695,11 @@ typename container<C>::STLT container<C>::evalchildren(int level) const
 }
 
 template <template <class> class C>
-typename container<C>::STLT *container<C>::subschildren(const exmap & m, unsigned options) const
+std::auto_ptr<typename container<C>::STLT> container<C>::subschildren(const exmap & m, unsigned options) const
 {
 	// returns a NULL pointer if nothing had to be substituted
 	// returns a pointer to a newly created epvector otherwise
-	// (which has to be deleted somewhere else)
+	// (and relinquishes responsibility for the epvector)
 
 	const_iterator cit = this->seq.begin(), end = this->seq.end();
 	while (cit != end) {
@@ -599,7 +707,7 @@ typename container<C>::STLT *container<C>::subschildren(const exmap & m, unsigne
 		if (!are_ex_trivially_equal(*cit, subsed_ex)) {
 
 			// copy first part of seq which hasn't changed
-			STLT *s = new STLT(this->seq.begin(), cit);
+			std::auto_ptr<STLT> s(new STLT(this->seq.begin(), cit));
 			reserve(*s, this->seq.size());
 
 			// insert changed element
@@ -618,7 +726,7 @@ typename container<C>::STLT *container<C>::subschildren(const exmap & m, unsigne
 		++cit;
 	}
 	
-	return 0; // nothing has changed
+	return std::auto_ptr<STLT>(0); // nothing has changed
 }
 
 } // namespace GiNaC