]> www.ginac.de Git - ginac.git/blobdiff - ginac/idx.cpp
- color and clifford classes are quite functional now
[ginac.git] / ginac / idx.cpp
index d8e8e70c6368b4a3f6116f1cfbe0d58be1f6a384..90ac3a425a35bfd6b2158e60b40eb8e8d36277fb 100644 (file)
@@ -25,6 +25,7 @@
 #include "idx.h"
 #include "symbol.h"
 #include "lst.h"
+#include "print.h"
 #include "archive.h"
 #include "utils.h"
 #include "debugmsg.h"
@@ -33,6 +34,7 @@ namespace GiNaC {
 
 GINAC_IMPLEMENT_REGISTERED_CLASS(idx, basic)
 GINAC_IMPLEMENT_REGISTERED_CLASS(varidx, idx)
+GINAC_IMPLEMENT_REGISTERED_CLASS(spinidx, varidx)
 
 //////////
 // default constructor, destructor, copy constructor assignment operator and helpers
@@ -49,6 +51,12 @@ varidx::varidx() : covariant(false)
        tinfo_key = TINFO_varidx;
 }
 
+spinidx::spinidx() : dotted(false)
+{
+       debugmsg("spinidx default constructor", LOGLEVEL_CONSTRUCT);
+       tinfo_key = TINFO_spinidx;
+}
+
 void idx::copy(const idx & other)
 {
        inherited::copy(other);
@@ -62,8 +70,15 @@ void varidx::copy(const varidx & other)
        covariant = other.covariant;
 }
 
+void spinidx::copy(const spinidx & other)
+{
+       inherited::copy(other);
+       dotted = other.dotted;
+}
+
 DEFAULT_DESTROY(idx)
 DEFAULT_DESTROY(varidx)
+DEFAULT_DESTROY(spinidx)
 
 //////////
 // other constructors
@@ -83,6 +98,12 @@ varidx::varidx(const ex & v, const ex & d, bool cov) : inherited(v, d), covarian
        tinfo_key = TINFO_varidx;
 }
 
+spinidx::spinidx(const ex & v, const ex & d, bool cov, bool dot) : inherited(v, d, cov), dotted(dot)
+{
+       debugmsg("spinidx constructor from ex,ex,bool,bool", LOGLEVEL_CONSTRUCT);
+       tinfo_key = TINFO_spinidx;
+}
+
 //////////
 // archiving
 //////////
@@ -100,6 +121,12 @@ varidx::varidx(const archive_node &n, const lst &sym_lst) : inherited(n, sym_lst
        n.find_bool("covariant", covariant);
 }
 
+spinidx::spinidx(const archive_node &n, const lst &sym_lst) : inherited(n, sym_lst)
+{
+       debugmsg("spinidx constructor from archive_node", LOGLEVEL_CONSTRUCT);
+       n.find_bool("dotted", dotted);
+}
+
 void idx::archive(archive_node &n) const
 {
        inherited::archive(n);
@@ -113,66 +140,116 @@ void varidx::archive(archive_node &n) const
        n.add_bool("covariant", covariant);
 }
 
+void spinidx::archive(archive_node &n) const
+{
+       inherited::archive(n);
+       n.add_bool("dotted", dotted);
+}
+
 DEFAULT_UNARCHIVE(idx)
 DEFAULT_UNARCHIVE(varidx)
+DEFAULT_UNARCHIVE(spinidx)
 
 //////////
 // functions overriding virtual functions from bases classes
 //////////
 
-void idx::printraw(std::ostream & os) const
+void idx::print(const print_context & c, unsigned level) const
 {
-       debugmsg("idx printraw", LOGLEVEL_PRINT);
+       debugmsg("idx print", LOGLEVEL_PRINT);
 
-       os << class_name() << "(";
-       value.printraw(os);
-       os << ",dim=";
-       dim.printraw(os);
-       os << ",hash=" << hashvalue << ",flags=" << flags;
-       os << ")";
+       if (is_of_type(c, print_tree)) {
+
+               c.s << std::string(level, ' ') << class_name()
+                   << std::hex << ", hash=0x" << hashvalue << ", flags=0x" << flags << std::dec
+                   << std::endl;
+               unsigned delta_indent = static_cast<const print_tree &>(c).delta_indent;
+               value.print(c, level + delta_indent);
+               dim.print(c, level + delta_indent);
+
+       } else {
+
+               if (!is_of_type(c, print_latex))
+                       c.s << ".";
+               bool need_parens = !(is_ex_exactly_of_type(value, numeric) || is_ex_of_type(value, symbol));
+               if (need_parens)
+                       c.s << "(";
+               value.print(c);
+               if (need_parens)
+                       c.s << ")";
+       }
 }
 
-void idx::printtree(std::ostream & os, unsigned indent) const
+void varidx::print(const print_context & c, unsigned level) const
 {
-       debugmsg("idx printtree",LOGLEVEL_PRINT);
+       debugmsg("varidx print", LOGLEVEL_PRINT);
 
-       os << std::string(indent, ' ') << "type=" << class_name();
-       value.printtree(os, indent + delta_indent);
-       os << std::string(indent, ' ');
-       os << ", hash=" << hashvalue
-          << " (0x" << std::hex << hashvalue << std::dec << ")"
-          << ", flags=" << flags << std::endl;
-}
+       if (is_of_type(c, print_tree)) {
 
-void idx::print(std::ostream & os, unsigned upper_precedence) const
-{
-       debugmsg("idx print", LOGLEVEL_PRINT);
+               c.s << std::string(level, ' ') << class_name()
+                   << std::hex << ", hash=0x" << hashvalue << ", flags=0x" << flags << std::dec
+                   << (covariant ? ", covariant" : ", contravariant")
+                   << std::endl;
+               unsigned delta_indent = static_cast<const print_tree &>(c).delta_indent;
+               value.print(c, level + delta_indent);
+               dim.print(c, level + delta_indent);
 
-       os << ".";
+       } else {
 
-       bool need_parens = !(is_ex_exactly_of_type(value, numeric) || is_ex_of_type(value, symbol));
-       if (need_parens)
-               os << "(";
-       os << value;
-       if (need_parens)
-               os << ")";
+               if (!is_of_type(c, print_latex)) {
+                       if (covariant)
+                               c.s << ".";
+                       else
+                               c.s << "~";
+               }
+               bool need_parens = !(is_ex_exactly_of_type(value, numeric) || is_ex_of_type(value, symbol));
+               if (need_parens)
+                       c.s << "(";
+               value.print(c);
+               if (need_parens)
+                       c.s << ")";
+       }
 }
 
-void varidx::print(std::ostream & os, unsigned upper_precedence) const
+void spinidx::print(const print_context & c, unsigned level) const
 {
-       debugmsg("varidx print", LOGLEVEL_PRINT);
-
-       if (covariant)
-               os << ".";
-       else
-               os << "~";
-
-       bool need_parens = !(is_ex_exactly_of_type(value, numeric) || is_ex_of_type(value, symbol));
-       if (need_parens)
-               os << "(";
-       os << value;
-       if (need_parens)
-               os << ")";
+       debugmsg("spinidx print", LOGLEVEL_PRINT);
+
+       if (is_of_type(c, print_tree)) {
+
+               c.s << std::string(level, ' ') << class_name()
+                   << std::hex << ", hash=0x" << hashvalue << ", flags=0x" << flags << std::dec
+                   << (covariant ? ", covariant" : ", contravariant")
+                   << (dotted ? ", dotted" : ", undotted")
+                   << std::endl;
+               unsigned delta_indent = static_cast<const print_tree &>(c).delta_indent;
+               value.print(c, level + delta_indent);
+               dim.print(c, level + delta_indent);
+
+       } else {
+
+               bool is_tex = is_of_type(c, print_latex);
+               if (!is_tex) {
+                       if (covariant)
+                               c.s << ".";
+                       else
+                               c.s << "~";
+               }
+               if (dotted) {
+                       if (is_tex)
+                               c.s << "\\dot{";
+                       else
+                               c.s << "*";
+               }
+               bool need_parens = !(is_ex_exactly_of_type(value, numeric) || is_ex_of_type(value, symbol));
+               if (need_parens)
+                       c.s << "(";
+               value.print(c);
+               if (need_parens)
+                       c.s << ")";
+               if (is_tex && dotted)
+                       c.s << "}";
+       }
 }
 
 bool idx::info(unsigned inf) const
@@ -182,6 +259,18 @@ bool idx::info(unsigned inf) const
        return inherited::info(inf);
 }
 
+unsigned idx::nops() const
+{
+       // don't count the dimension as that is not really a sub-expression
+       return 1;
+}
+
+ex & idx::let_op(int i)
+{
+       GINAC_ASSERT(i == 0);
+       return value;
+}
+
 /** Returns order relation between two indices of the same type. The order
  *  must be such that dummy indices lie next to each other. */
 int idx::compare_same_type(const basic & other) const
@@ -210,6 +299,24 @@ int varidx::compare_same_type(const basic & other) const
        return 0;
 }
 
+int spinidx::compare_same_type(const basic & other) const
+{
+       GINAC_ASSERT(is_of_type(other, spinidx));
+       const spinidx &o = static_cast<const spinidx &>(other);
+
+       int cmpval = inherited::compare_same_type(other);
+       if (cmpval)
+               return cmpval;
+
+       // Check variance and dottedness last so dummy indices will end up next to each other
+       if (covariant != o.covariant)
+               return covariant ? -1 : 1;
+       if (dotted != o.dotted)
+               return dotted ? -1 : 1;
+
+       return 0;
+}
+
 ex idx::subs(const lst & ls, const lst & lr) const
 {
        GINAC_ASSERT(ls.nops() == lr.nops());
@@ -225,6 +332,7 @@ ex idx::subs(const lst & ls, const lst & lr) const
                        // Otherwise substitute value
                        idx *i_copy = static_cast<idx *>(duplicate());
                        i_copy->value = lr.op(i);
+                       i_copy->clearflag(status_flags::hash_calculated);
                        return i_copy->setflag(status_flags::dynallocated);
                }
        }
@@ -236,6 +344,7 @@ ex idx::subs(const lst & ls, const lst & lr) const
 
        idx *i_copy = static_cast<idx *>(duplicate());
        i_copy->value = subsed_value;
+       i_copy->clearflag(status_flags::hash_calculated);
        return i_copy->setflag(status_flags::dynallocated);
 }
 
@@ -270,6 +379,18 @@ bool varidx::is_dummy_pair_same_type(const basic & other) const
        return inherited::is_dummy_pair_same_type(other);
 }
 
+bool spinidx::is_dummy_pair_same_type(const basic & other) const
+{
+       const spinidx &o = static_cast<const spinidx &>(other);
+
+       // Dottedness must be the same
+       if (dotted != o.dotted)
+               return false;
+
+       return inherited::is_dummy_pair_same_type(other);
+}
+
+
 //////////
 // non-virtual functions
 //////////
@@ -282,6 +403,23 @@ ex varidx::toggle_variance(void) const
        return i_copy->setflag(status_flags::dynallocated);
 }
 
+ex spinidx::toggle_dot(void) const
+{
+       spinidx *i_copy = static_cast<spinidx *>(duplicate());
+       i_copy->dotted = !i_copy->dotted;
+       i_copy->clearflag(status_flags::hash_calculated);
+       return i_copy->setflag(status_flags::dynallocated);
+}
+
+ex spinidx::toggle_variance_dot(void) const
+{
+       spinidx *i_copy = static_cast<spinidx *>(duplicate());
+       i_copy->covariant = !i_copy->covariant;
+       i_copy->dotted = !i_copy->dotted;
+       i_copy->clearflag(status_flags::hash_calculated);
+       return i_copy->setflag(status_flags::dynallocated);
+}
+
 //////////
 // global functions
 //////////