1 /** @file ginsh_parser.yy
3 * Input grammar definition for ginsh.
4 * This file must be processed with yacc/bison. */
7 * GiNaC Copyright (C) 1999-2007 Johannes Gutenberg University Mainz, Germany
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
32 #include <sys/resource.h>
38 #include <sys/types.h>
46 #define YYERROR_VERBOSE 1
48 #ifdef REALLY_HAVE_LIBREADLINE
49 // Original readline settings
50 static int orig_completion_append_character;
51 #if (GINAC_RL_VERSION_MAJOR < 4) || (GINAC_RL_VERSION_MAJOR == 4 && GINAC_RL_VERSION_MINOR < 2)
52 static char *orig_basic_word_break_characters;
54 static const char *orig_basic_word_break_characters;
57 #if (GINAC_RL_VERSION_MAJOR >= 5)
58 #define GINAC_RL_COMPLETER_CAST(a) const_cast<char *>((a))
60 #define GINAC_RL_COMPLETER_CAST(a) (a)
62 #endif // REALLY_HAVE_LIBREADLINE
64 // Expression stack for %, %% and %%%
65 static void push(const ex &e);
68 // Start and end time for the time() function
70 static struct rusage start_time, end_time;
71 #define START_TIMER getrusage(RUSAGE_SELF, &start_time);
72 #define STOP_TIMER getrusage(RUSAGE_SELF, &end_time);
73 #define PRINT_TIME_USED cout << \
74 (end_time.ru_utime.tv_sec - start_time.ru_utime.tv_sec) + \
75 (end_time.ru_stime.tv_sec - start_time.ru_stime.tv_sec) + \
76 double(end_time.ru_utime.tv_usec - start_time.ru_utime.tv_usec) / 1e6 + \
77 double(end_time.ru_stime.tv_usec - start_time.ru_stime.tv_usec) / 1e6 \
80 static std::clock_t start_time, end_time;
81 #define START_TIMER start_time = std::clock();
82 #define STOP_TIMER end_time = std::clock();
83 #define PRINT_TIME_USED \
84 cout << double(end_time - start_time)/CLOCKS_PER_SEC << 's' << endl;
87 // Table of functions (a multimap, because one function may appear with different
88 // numbers of parameters)
89 typedef ex (*fcnp)(const exprseq &e);
90 typedef ex (*fcnp2)(const exprseq &e, int serial);
93 fcn_desc() : p(NULL), num_params(0), is_ginac(false), serial(0) {}
94 fcn_desc(fcnp func, int num) : p(func), num_params(num), is_ginac(false), serial(0) {}
95 fcn_desc(fcnp2 func, int num, int ser) : p((fcnp)func), num_params(num), is_ginac(true), serial(ser) {}
97 fcnp p; // Pointer to function
98 int num_params; // Number of parameters (0 = arbitrary)
99 bool is_ginac; // Flag: function is GiNaC function
100 int serial; // GiNaC function serial number (if is_ginac == true)
103 typedef multimap<string, fcn_desc> fcn_tab;
106 static fcn_tab::const_iterator find_function(const ex &sym, int req_params);
108 // Table to map help topics to help strings
109 typedef multimap<string, string> help_tab;
110 static help_tab help;
112 static void insert_fcn_help(const char *name, const char *str);
113 static void print_help(const string &topic);
114 static void print_help_topics(void);
117 /* Tokens (T_LITERAL means a literal value returned by the parser, but not
118 of class numeric or symbol (e.g. a constant or the FAIL object)) */
119 %token T_NUMBER T_SYMBOL T_LITERAL T_DIGITS T_QUOTE T_QUOTE2 T_QUOTE3
120 %token T_EQUAL T_NOTEQ T_LESSEQ T_GREATEREQ
122 %token T_QUIT T_WARRANTY T_PRINT T_IPRINT T_PRINTLATEX T_PRINTCSRC T_TIME
123 %token T_XYZZY T_INVENTORY T_LOOK T_SCORE T_COMPLEX_SYMBOLS T_REAL_SYMBOLS
125 /* Operator precedence and associativity */
127 %left T_EQUAL T_NOTEQ
128 %left '<' '>' T_LESSEQ T_GREATEREQ
152 } catch (exception &e) {
153 cerr << e.what() << endl;
160 } catch (exception &e) {
161 std::cerr << e.what() << endl;
165 | T_PRINT '(' exp ')' ';' {
167 $3.print(print_tree(std::cout));
168 } catch (exception &e) {
169 std::cerr << e.what() << endl;
173 | T_IPRINT '(' exp ')' ';' {
176 if (!e.info(info_flags::integer))
177 throw (std::invalid_argument("argument to iprint() must be an integer"));
178 long i = ex_to<numeric>(e).to_long();
180 cout << "#o" << oct << i << endl;
181 cout << "#x" << hex << i << dec << endl;
182 } catch (exception &e) {
183 cerr << e.what() << endl;
187 | T_PRINTLATEX '(' exp ')' ';' {
189 $3.print(print_latex(std::cout)); cout << endl;
190 } catch (exception &e) {
191 std::cerr << e.what() << endl;
195 | T_PRINTCSRC '(' exp ')' ';' {
197 $3.print(print_csrc_double(std::cout)); cout << endl;
198 } catch (exception &e) {
199 std::cerr << e.what() << endl;
203 | '?' T_SYMBOL {print_help(ex_to<symbol>($2).get_name());}
204 | '?' T_TIME {print_help("time");}
205 | '?' T_PRINT {print_help("print");}
206 | '?' T_IPRINT {print_help("iprint");}
207 | '?' T_PRINTLATEX {print_help("print_latex");}
208 | '?' T_PRINTCSRC {print_help("print_csrc");}
209 | '?' '?' {print_help_topics();}
212 cout << "This program is free software; you can redistribute it and/or modify it under\n";
213 cout << "the terms of the GNU General Public License as published by the Free Software\n";
214 cout << "Foundation; either version 2 of the License, or (at your option) any later\n";
215 cout << "version.\n";
216 cout << "This program is distributed in the hope that it will be useful, but WITHOUT\n";
217 cout << "ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS\n";
218 cout << "FOR A PARTICULAR PURPOSE. See the GNU General Public License for more\n";
219 cout << "details.\n";
220 cout << "You should have received a copy of the GNU General Public License along with\n";
221 cout << "this program. If not, write to the Free Software Foundation, 675 Mass Ave,\n";
222 cout << "Cambridge, MA 02139, USA.\n";
224 | T_XYZZY {cout << "Nothing happens.\n";}
225 | T_INVENTORY {cout << "You're not carrying anything.\n";}
226 | T_LOOK {cout << "You're in a twisty little maze of passages, all alike.\n";}
228 cout << "If you were to quit now, you would score ";
229 cout << (syms.size() > 350 ? 350 : syms.size());
230 cout << " out of a possible 350.\n";
232 | T_REAL_SYMBOLS { symboltype = domain::real; }
233 | T_COMPLEX_SYMBOLS { symboltype = domain::complex; }
234 | T_TIME { START_TIMER } '(' exp ')' { STOP_TIMER PRINT_TIME_USED }
235 | error ';' {yyclearin; yyerrok;}
236 | error ':' {yyclearin; yyerrok;}
239 exp : T_NUMBER {$$ = $1;}
240 | T_SYMBOL {$$ = $1.eval();}
241 | '\'' T_SYMBOL '\'' {$$ = $2;}
242 | T_LITERAL {$$ = $1;}
243 | T_DIGITS {$$ = $1;}
244 | T_QUOTE {$$ = exstack[0];}
245 | T_QUOTE2 {$$ = exstack[1];}
246 | T_QUOTE3 {$$ = exstack[2];}
247 | T_SYMBOL '(' exprseq ')' {
248 fcn_tab::const_iterator i = find_function($1, $3.nops());
249 if (i->second.is_ginac) {
250 $$ = ((fcnp2)(i->second.p))(ex_to<exprseq>($3), i->second.serial);
252 $$ = (i->second.p)(ex_to<exprseq>($3));
255 | T_DIGITS '=' T_NUMBER {$$ = $3; Digits = ex_to<numeric>($3).to_int();}
256 | T_SYMBOL '=' exp {$$ = $3; const_cast<symbol&>(ex_to<symbol>($1)).assign($3);}
257 | exp T_EQUAL exp {$$ = $1 == $3;}
258 | exp T_NOTEQ exp {$$ = $1 != $3;}
259 | exp '<' exp {$$ = $1 < $3;}
260 | exp T_LESSEQ exp {$$ = $1 <= $3;}
261 | exp '>' exp {$$ = $1 > $3;}
262 | exp T_GREATEREQ exp {$$ = $1 >= $3;}
263 | exp '+' exp {$$ = $1 + $3;}
264 | exp '-' exp {$$ = $1 - $3;}
265 | exp '*' exp {$$ = $1 * $3;}
266 | exp '/' exp {$$ = $1 / $3;}
267 | '-' exp %prec NEG {$$ = -$2;}
268 | '+' exp %prec NEG {$$ = $2;}
269 | exp '^' exp {$$ = power($1, $3);}
270 | exp '!' {$$ = factorial($1);}
271 | '(' exp ')' {$$ = $2;}
272 | '{' list_or_empty '}' {$$ = $2;}
273 | '[' matrix ']' {$$ = lst_to_matrix(ex_to<lst>($2));}
276 exprseq : exp {$$ = exprseq($1);}
277 | exprseq ',' exp {exprseq es(ex_to<exprseq>($1)); $$ = es.append($3);}
280 list_or_empty: /* empty */ {$$ = *new lst;}
284 list : exp {$$ = lst($1);}
285 | list ',' exp {lst l(ex_to<lst>($1)); $$ = l.append($3);}
288 matrix : '[' row ']' {$$ = lst($2);}
289 | matrix ',' '[' row ']' {lst l(ex_to<lst>($1)); $$ = l.append($4);}
292 row : exp {$$ = lst($1);}
293 | row ',' exp {lst l(ex_to<lst>($1)); $$ = l.append($3);}
302 // Error print routine
305 cerr << s << " at " << yytext << endl;
309 // Push expression "e" onto the expression stack (for ", "" and """)
310 static void push(const ex &e)
312 exstack[2] = exstack[1];
313 exstack[1] = exstack[0];
322 static ex f_collect(const exprseq &e) {return e[0].collect(e[1]);}
323 static ex f_collect_distributed(const exprseq &e) {return e[0].collect(e[1], true);}
324 static ex f_collect_common_factors(const exprseq &e) {return collect_common_factors(e[0]);}
325 static ex f_convert_H_to_Li(const exprseq &e) {return convert_H_to_Li(e[0], e[1]);}
326 static ex f_degree(const exprseq &e) {return e[0].degree(e[1]);}
327 static ex f_denom(const exprseq &e) {return e[0].denom();}
328 static ex f_eval1(const exprseq &e) {return e[0].eval();}
329 static ex f_evalf1(const exprseq &e) {return e[0].evalf();}
330 static ex f_evalm(const exprseq &e) {return e[0].evalm();}
331 static ex f_eval_integ(const exprseq &e) {return e[0].eval_integ();}
332 static ex f_expand(const exprseq &e) {return e[0].expand();}
333 static ex f_gcd(const exprseq &e) {return gcd(e[0], e[1]);}
334 static ex f_has(const exprseq &e) {return e[0].has(e[1]) ? ex(1) : ex(0);}
335 static ex f_lcm(const exprseq &e) {return lcm(e[0], e[1]);}
336 static ex f_lcoeff(const exprseq &e) {return e[0].lcoeff(e[1]);}
337 static ex f_ldegree(const exprseq &e) {return e[0].ldegree(e[1]);}
338 static ex f_lsolve(const exprseq &e) {return lsolve(e[0], e[1]);}
339 static ex f_nops(const exprseq &e) {return e[0].nops();}
340 static ex f_normal1(const exprseq &e) {return e[0].normal();}
341 static ex f_numer(const exprseq &e) {return e[0].numer();}
342 static ex f_numer_denom(const exprseq &e) {return e[0].numer_denom();}
343 static ex f_pow(const exprseq &e) {return pow(e[0], e[1]);}
344 static ex f_sqrt(const exprseq &e) {return sqrt(e[0]);}
345 static ex f_sqrfree1(const exprseq &e) {return sqrfree(e[0]);}
346 static ex f_subs2(const exprseq &e) {return e[0].subs(e[1]);}
347 static ex f_tcoeff(const exprseq &e) {return e[0].tcoeff(e[1]);}
349 #define CHECK_ARG(num, type, fcn) if (!is_a<type>(e[num])) throw(std::invalid_argument("argument " #num " to " #fcn "() must be a " #type))
351 static ex f_charpoly(const exprseq &e)
353 CHECK_ARG(0, matrix, charpoly);
354 return ex_to<matrix>(e[0]).charpoly(e[1]);
357 static ex f_coeff(const exprseq &e)
359 CHECK_ARG(2, numeric, coeff);
360 return e[0].coeff(e[1], ex_to<numeric>(e[2]).to_int());
363 static ex f_content(const exprseq &e)
365 return e[0].content(e[1]);
368 static ex f_decomp_rational(const exprseq &e)
370 return decomp_rational(e[0], e[1]);
373 static ex f_determinant(const exprseq &e)
375 CHECK_ARG(0, matrix, determinant);
376 return ex_to<matrix>(e[0]).determinant();
379 static ex f_diag(const exprseq &e)
381 size_t dim = e.nops();
382 matrix &m = *new matrix(dim, dim);
383 for (size_t i=0; i<dim; i++)
384 m.set(i, i, e.op(i));
388 static ex f_diff2(const exprseq &e)
390 CHECK_ARG(1, symbol, diff);
391 return e[0].diff(ex_to<symbol>(e[1]));
394 static ex f_diff3(const exprseq &e)
396 CHECK_ARG(1, symbol, diff);
397 CHECK_ARG(2, numeric, diff);
398 return e[0].diff(ex_to<symbol>(e[1]), ex_to<numeric>(e[2]).to_int());
401 static ex f_divide(const exprseq &e)
404 if (divide(e[0], e[1], q))
410 static ex f_eval2(const exprseq &e)
412 CHECK_ARG(1, numeric, eval);
413 return e[0].eval(ex_to<numeric>(e[1]).to_int());
416 static ex f_evalf2(const exprseq &e)
418 CHECK_ARG(1, numeric, evalf);
419 return e[0].evalf(ex_to<numeric>(e[1]).to_int());
422 static ex f_find(const exprseq &e)
425 e[0].find(e[1], found);
429 static ex f_fsolve(const exprseq &e)
431 CHECK_ARG(1, symbol, fsolve);
432 CHECK_ARG(2, numeric, fsolve);
433 CHECK_ARG(3, numeric, fsolve);
434 return fsolve(e[0], ex_to<symbol>(e[1]), ex_to<numeric>(e[2]), ex_to<numeric>(e[3]));
437 static ex f_integer_content(const exprseq &e)
439 return e[0].expand().integer_content();
442 static ex f_integral(const exprseq &e)
444 CHECK_ARG(0, symbol, integral);
445 return integral(e[0], e[1], e[2], e[3]);
448 static ex f_inverse(const exprseq &e)
450 CHECK_ARG(0, matrix, inverse);
451 return ex_to<matrix>(e[0]).inverse();
454 static ex f_is(const exprseq &e)
456 CHECK_ARG(0, relational, is);
457 return (bool)ex_to<relational>(e[0]) ? ex(1) : ex(0);
460 class apply_map_function : public map_function {
463 apply_map_function(const ex & a) : apply(a) {}
464 virtual ~apply_map_function() {}
465 ex operator()(const ex & e) { return apply.subs(wild() == e, true); }
468 static ex f_map(const exprseq &e)
470 apply_map_function fcn(e[1]);
471 return e[0].map(fcn);
474 static ex f_match(const exprseq &e)
477 if (e[0].match(e[1], repl_lst))
483 static ex f_normal2(const exprseq &e)
485 CHECK_ARG(1, numeric, normal);
486 return e[0].normal(ex_to<numeric>(e[1]).to_int());
489 static ex f_op(const exprseq &e)
491 CHECK_ARG(1, numeric, op);
492 int n = ex_to<numeric>(e[1]).to_int();
493 if (n < 0 || n >= (int)e[0].nops())
494 throw(std::out_of_range("second argument to op() is out of range"));
498 static ex f_prem(const exprseq &e)
500 return prem(e[0], e[1], e[2]);
503 static ex f_primpart(const exprseq &e)
505 return e[0].primpart(e[1]);
508 static ex f_quo(const exprseq &e)
510 return quo(e[0], e[1], e[2]);
513 static ex f_rank(const exprseq &e)
515 CHECK_ARG(0, matrix, rank);
516 return ex_to<matrix>(e[0]).rank();
519 static ex f_rem(const exprseq &e)
521 return rem(e[0], e[1], e[2]);
524 static ex f_resultant(const exprseq &e)
526 CHECK_ARG(2, symbol, resultant);
527 return resultant(e[0], e[1], ex_to<symbol>(e[2]));
530 static ex f_series(const exprseq &e)
532 CHECK_ARG(2, numeric, series);
533 return e[0].series(e[1], ex_to<numeric>(e[2]).to_int());
536 static ex f_sprem(const exprseq &e)
538 return sprem(e[0], e[1], e[2]);
541 static ex f_sqrfree2(const exprseq &e)
543 CHECK_ARG(1, lst, sqrfree);
544 return sqrfree(e[0], ex_to<lst>(e[1]));
547 static ex f_subs3(const exprseq &e)
549 CHECK_ARG(1, lst, subs);
550 CHECK_ARG(2, lst, subs);
551 return e[0].subs(ex_to<lst>(e[1]), ex_to<lst>(e[2]));
554 static ex f_trace(const exprseq &e)
556 CHECK_ARG(0, matrix, trace);
557 return ex_to<matrix>(e[0]).trace();
560 static ex f_transpose(const exprseq &e)
562 CHECK_ARG(0, matrix, transpose);
563 return ex_to<matrix>(e[0]).transpose();
566 static ex f_unassign(const exprseq &e)
568 CHECK_ARG(0, symbol, unassign);
569 const_cast<symbol&>(ex_to<symbol>(e[0])).unassign();
573 static ex f_unit(const exprseq &e)
575 return e[0].unit(e[1]);
578 static ex f_dummy(const exprseq &e)
580 throw(std::logic_error("dummy function called (shouldn't happen)"));
583 // Tables for initializing the "fcns" map and the function help topics
590 static const fcn_init builtin_fcns[] = {
591 {"charpoly", f_charpoly, 2},
592 {"coeff", f_coeff, 3},
593 {"collect", f_collect, 2},
594 {"collect_common_factors", f_collect_common_factors, 1},
595 {"collect_distributed", f_collect_distributed, 2},
596 {"content", f_content, 2},
597 {"convert_H_to_Li", f_convert_H_to_Li, 2},
598 {"decomp_rational", f_decomp_rational, 2},
599 {"degree", f_degree, 2},
600 {"denom", f_denom, 1},
601 {"determinant", f_determinant, 1},
603 {"diff", f_diff2, 2},
604 {"diff", f_diff3, 3},
605 {"divide", f_divide, 2},
606 {"eval", f_eval1, 1},
607 {"eval", f_eval2, 2},
608 {"evalf", f_evalf1, 1},
609 {"evalf", f_evalf2, 2},
610 {"evalm", f_evalm, 1},
611 {"eval_integ", f_eval_integ, 1},
612 {"expand", f_expand, 1},
614 {"fsolve", f_fsolve, 4},
617 {"integer_content", f_integer_content, 1},
618 {"integral", f_integral, 4},
619 {"inverse", f_inverse, 1},
620 {"iprint", f_dummy, 0}, // for Tab-completion
623 {"lcoeff", f_lcoeff, 2},
624 {"ldegree", f_ldegree, 2},
625 {"lsolve", f_lsolve, 2},
627 {"match", f_match, 2},
629 {"normal", f_normal1, 1},
630 {"normal", f_normal2, 2},
631 {"numer", f_numer, 1},
632 {"numer_denom", f_numer_denom, 1},
636 {"primpart", f_primpart, 2},
637 {"print", f_dummy, 0}, // for Tab-completion
638 {"print_csrc", f_dummy, 0}, // for Tab-completion
639 {"print_latex", f_dummy, 0}, // for Tab-completion
643 {"resultant", f_resultant, 3},
644 {"series", f_series, 3},
645 {"sprem", f_sprem, 3},
646 {"sqrfree", f_sqrfree1, 1},
647 {"sqrfree", f_sqrfree2, 2},
649 {"subs", f_subs2, 2},
650 {"subs", f_subs3, 3},
651 {"tcoeff", f_tcoeff, 2},
652 {"time", f_dummy, 0}, // for Tab-completion
653 {"trace", f_trace, 1},
654 {"transpose", f_transpose, 1},
655 {"unassign", f_unassign, 1},
657 {NULL, f_dummy, 0} // End marker
660 struct fcn_help_init {
665 static const fcn_help_init builtin_help[] = {
666 {"acos", "inverse cosine function"},
667 {"acosh", "inverse hyperbolic cosine function"},
668 {"asin", "inverse sine function"},
669 {"asinh", "inverse hyperbolic sine function"},
670 {"atan", "inverse tangent function"},
671 {"atan2", "inverse tangent function with two arguments"},
672 {"atanh", "inverse hyperbolic tangent function"},
673 {"beta", "Beta function"},
674 {"binomial", "binomial function"},
675 {"cos", "cosine function"},
676 {"cosh", "hyperbolic cosine function"},
677 {"exp", "exponential function"},
678 {"factorial", "factorial function"},
679 {"lgamma", "natural logarithm of Gamma function"},
680 {"tgamma", "Gamma function"},
681 {"log", "natural logarithm"},
682 {"psi", "psi function\npsi(x) is the digamma function, psi(n,x) the nth polygamma function"},
683 {"sin", "sine function"},
684 {"sinh", "hyperbolic sine function"},
685 {"tan", "tangent function"},
686 {"tanh", "hyperbolic tangent function"},
687 {"zeta", "zeta function\nzeta(x) is Riemann's zeta function, zetaderiv(n,x) its nth derivative.\nIf x is a GiNaC::lst, it is a multiple zeta value\nzeta(x,s) is an alternating Euler sum"},
688 {"Li2", "dilogarithm"},
689 {"Li3", "trilogarithm"},
690 {"Li", "(multiple) polylogarithm"},
691 {"S", "Nielsen's generalized polylogarithm"},
692 {"H", "harmonic polylogarithm"},
693 {"Order", "order term function (for truncated power series)"},
694 {"Derivative", "inert differential operator"},
695 {NULL, NULL} // End marker
698 #include "ginsh_extensions.h"
702 * Add functions to ginsh
705 // Functions from fcn_init array
706 static void insert_fcns(const fcn_init *p)
709 fcns.insert(make_pair(string(p->name), fcn_desc(p->p, p->num_params)));
714 static ex f_ginac_function(const exprseq &es, int serial)
716 return function(serial, es).eval(1);
719 // All registered GiNaC functions
721 void ginsh_get_ginac_functions(void)
723 vector<function_options>::const_iterator i = function::registered_functions().begin(), end = function::registered_functions().end();
726 fcns.insert(make_pair(i->get_name(), fcn_desc(f_ginac_function, i->get_nparams(), serial)));
735 * Find a function given a name and number of parameters. Throw exceptions on error.
738 static fcn_tab::const_iterator find_function(const ex &sym, int req_params)
740 const string &name = ex_to<symbol>(sym).get_name();
741 typedef fcn_tab::const_iterator I;
742 pair<I, I> b = fcns.equal_range(name);
743 if (b.first == b.second)
744 throw(std::logic_error("unknown function '" + name + "'"));
746 for (I i=b.first; i!=b.second; i++)
747 if ((i->second.num_params == 0) || (i->second.num_params == req_params))
750 throw(std::logic_error("invalid number of arguments to " + name + "()"));
755 * Insert help strings
758 // Normal help string
759 static void insert_help(const char *topic, const char *str)
761 help.insert(make_pair(string(topic), string(str)));
764 // Help string for functions, automatically generates synopsis
765 static void insert_fcn_help(const char *name, const char *str)
767 typedef fcn_tab::const_iterator I;
768 pair<I, I> b = fcns.equal_range(name);
769 if (b.first != b.second) {
770 string help_str = string(name) + "(";
771 for (int i=0; i<b.first->second.num_params; i++) {
774 help_str += "expression";
778 help.insert(make_pair(string(name), help_str));
782 // Help strings for functions from fcn_help_init array
783 static void insert_help(const fcn_help_init *p)
786 insert_fcn_help(p->name, p->help);
796 // Help for a given topic
797 static void print_help(const string &topic)
799 typedef help_tab::const_iterator I;
800 pair<I, I> b = help.equal_range(topic);
801 if (b.first == b.second)
802 cout << "no help for '" << topic << "'\n";
804 for (I i=b.first; i!=b.second; i++)
805 cout << i->second << endl;
809 // List of help topics
810 static void print_help_topics(void)
812 cout << "Available help topics:\n";
813 help_tab::const_iterator i;
814 string last_name = string("*");
816 for (i=help.begin(); i!=help.end(); i++) {
817 // Don't print duplicates
818 if (i->first != last_name) {
823 last_name = i->first;
826 cout << "\nTo get help for a certain topic, type ?topic\n";
831 * Function name completion functions for readline
834 static char *fcn_generator(const char *text, int state)
836 static int len; // Length of word to complete
837 static fcn_tab::const_iterator index; // Iterator to function being currently considered
839 // If this is a new word to complete, initialize now
841 index = fcns.begin();
845 // Return the next function which partially matches
846 while (index != fcns.end()) {
847 const char *fcn_name = index->first.c_str();
849 if (strncmp(fcn_name, text, len) == 0)
850 return strdup(fcn_name);
855 #ifdef REALLY_HAVE_LIBREADLINE
856 static char **fcn_completion(const char *text, int start, int end)
858 if (rl_line_buffer[0] == '!') {
859 // For shell commands, revert back to filename completion
860 rl_completion_append_character = orig_completion_append_character;
861 rl_basic_word_break_characters = orig_basic_word_break_characters;
862 rl_completer_word_break_characters = GINAC_RL_COMPLETER_CAST(rl_basic_word_break_characters);
863 #if (GINAC_RL_VERSION_MAJOR < 4) || (GINAC_RL_VERSION_MAJOR == 4 && GINAC_RL_VERSION_MINOR < 2)
864 return completion_matches(const_cast<char *>(text), (CPFunction *)filename_completion_function);
866 return rl_completion_matches(text, rl_filename_completion_function);
869 // Otherwise, complete function names
870 rl_completion_append_character = '(';
871 rl_basic_word_break_characters = " \t\n\"#$%&'()*+,-./:;<=>?@[\\]^`{|}~";
872 rl_completer_word_break_characters = GINAC_RL_COMPLETER_CAST(rl_basic_word_break_characters);
873 #if (GINAC_RL_VERSION_MAJOR < 4) || (GINAC_RL_VERSION_MAJOR == 4 && GINAC_RL_VERSION_MINOR < 2)
874 return completion_matches(const_cast<char *>(text), (CPFunction *)fcn_generator);
876 return rl_completion_matches(text, fcn_generator);
880 #endif // REALLY_HAVE_LIBREADLINE
884 cout << "ginsh - GiNaC Interactive Shell (" << PACKAGE << " V" << VERSION << ")" << endl;
885 cout << " __, _______ Copyright (C) 1999-2007 Johannes Gutenberg University Mainz,\n"
886 << " (__) * | Germany. This is free software with ABSOLUTELY NO WARRANTY.\n"
887 << " ._) i N a C | You are welcome to redistribute it under certain conditions.\n"
888 << "<-------------' For details type `warranty;'.\n" << endl;
889 cout << "Type ?? for a list of help topics." << endl;
896 int main(int argc, char **argv)
898 // Print banner in interactive mode
902 // Init function table
903 insert_fcns(builtin_fcns);
904 insert_fcns(extended_fcns);
905 ginsh_get_ginac_functions();
907 // Init help for operators (automatically generated from man page)
908 insert_help("operators", "Operators in falling order of precedence:");
909 #include "ginsh_op_help.h"
911 // Init help for built-in functions (automatically generated from man page)
912 #include "ginsh_fcn_help.h"
914 // Help for GiNaC functions is added manually
915 insert_help(builtin_help);
916 insert_help(extended_help);
918 // Help for other keywords
919 insert_help("print", "print(expression) - dumps the internal structure of the given expression (for debugging)");
920 insert_help("iprint", "iprint(expression) - prints the given integer expression in decimal, octal, and hexadecimal bases");
921 insert_help("print_latex", "print_latex(expression) - prints a LaTeX representation of the given expression");
922 insert_help("print_csrc", "print_csrc(expression) - prints a C source code representation of the given expression");
924 #ifdef REALLY_HAVE_LIBREADLINE
925 // Init readline completer
926 rl_readline_name = argv[0];
927 #if (GINAC_RL_VERSION_MAJOR < 4) || (GINAC_RL_VERSION_MAJOR == 4 && GINAC_RL_VERSION_MINOR < 2)
928 rl_attempted_completion_function = (CPPFunction *)fcn_completion;
930 rl_attempted_completion_function = fcn_completion;
932 orig_completion_append_character = rl_completion_append_character;
933 orig_basic_word_break_characters = rl_basic_word_break_characters;
936 // Init input file list, open first file
937 num_files = argc - 1;
938 file_list = argv + 1;
940 yyin = fopen(*file_list, "r");
942 cerr << "Can't open " << *file_list << endl;
949 // Parse input, catch all remaining exceptions
953 } catch (exception &e) {
954 cerr << e.what() << endl;