1 /** @file ginsh_parser.yy
3 * Input grammar definition for ginsh.
4 * This file must be processed with yacc/bison. */
7 * GiNaC Copyright (C) 1999-2002 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
32 #include <sys/resource.h>
35 #include <sys/types.h>
43 #define YYERROR_VERBOSE 1
45 // Original readline settings
46 static int orig_completion_append_character;
47 #if (GINAC_RL_VERSION_MAJOR < 4) || (GINAC_RL_VERSION_MAJOR == 4 && GINAC_RL_VERSION_MINOR < 2)
48 static char *orig_basic_word_break_characters;
50 static const char *orig_basic_word_break_characters;
53 // Expression stack for %, %% and %%%
54 static void push(const ex &e);
57 // Start and end time for the time() function
58 static struct rusage start_time, end_time;
60 // Table of functions (a multimap, because one function may appear with different
61 // numbers of parameters)
62 typedef ex (*fcnp)(const exprseq &e);
63 typedef ex (*fcnp2)(const exprseq &e, int serial);
66 fcn_desc() : p(NULL), num_params(0) {}
67 fcn_desc(fcnp func, int num) : p(func), num_params(num), is_ginac(false) {}
68 fcn_desc(fcnp2 func, int num, int ser) : p((fcnp)func), num_params(num), is_ginac(true), serial(ser) {}
70 fcnp p; // Pointer to function
71 int num_params; // Number of parameters (0 = arbitrary)
72 bool is_ginac; // Flag: function is GiNaC function
73 int serial; // GiNaC function serial number (if is_ginac == true)
76 typedef multimap<string, fcn_desc> fcn_tab;
79 static fcn_tab::const_iterator find_function(const ex &sym, int req_params);
81 // Table to map help topics to help strings
82 typedef multimap<string, string> help_tab;
85 static void insert_fcn_help(const char *name, const char *str);
86 static void print_help(const string &topic);
87 static void print_help_topics(void);
90 /* Tokens (T_LITERAL means a literal value returned by the parser, but not
91 of class numeric or symbol (e.g. a constant or the FAIL object)) */
92 %token T_NUMBER T_SYMBOL T_LITERAL T_DIGITS T_QUOTE T_QUOTE2 T_QUOTE3
93 %token T_EQUAL T_NOTEQ T_LESSEQ T_GREATEREQ
95 %token T_QUIT T_WARRANTY T_PRINT T_IPRINT T_PRINTLATEX T_PRINTCSRC T_TIME
96 %token T_XYZZY T_INVENTORY T_LOOK T_SCORE
98 /* Operator precedence and associativity */
100 %left T_EQUAL T_NOTEQ
101 %left '<' '>' T_LESSEQ T_GREATEREQ
125 } catch (exception &e) {
126 cerr << e.what() << endl;
133 } catch (exception &e) {
134 std::cerr << e.what() << endl;
138 | T_PRINT '(' exp ')' ';' {
140 $3.print(print_tree(std::cout));
141 } catch (exception &e) {
142 std::cerr << e.what() << endl;
146 | T_IPRINT '(' exp ')' ';' {
149 if (!e.info(info_flags::integer))
150 throw (std::invalid_argument("argument to iprint() must be an integer"));
151 long i = ex_to<numeric>(e).to_long();
153 cout << "#o" << oct << i << endl;
154 cout << "#x" << hex << i << dec << endl;
155 } catch (exception &e) {
156 cerr << e.what() << endl;
160 | T_PRINTLATEX '(' exp ')' ';' {
162 $3.print(print_latex(std::cout)); cout << endl;
163 } catch (exception &e) {
164 std::cerr << e.what() << endl;
168 | T_PRINTCSRC '(' exp ')' ';' {
170 $3.print(print_csrc_double(std::cout)); cout << endl;
171 } catch (exception &e) {
172 std::cerr << e.what() << endl;
176 | '?' T_SYMBOL {print_help(ex_to<symbol>($2).get_name());}
177 | '?' T_TIME {print_help("time");}
178 | '?' '?' {print_help_topics();}
181 cout << "This program is free software; you can redistribute it and/or modify it under\n";
182 cout << "the terms of the GNU General Public License as published by the Free Software\n";
183 cout << "Foundation; either version 2 of the License, or (at your option) any later\n";
184 cout << "version.\n";
185 cout << "This program is distributed in the hope that it will be useful, but WITHOUT\n";
186 cout << "ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS\n";
187 cout << "FOR A PARTICULAR PURPOSE. See the GNU General Public License for more\n";
188 cout << "details.\n";
189 cout << "You should have received a copy of the GNU General Public License along with\n";
190 cout << "this program. If not, write to the Free Software Foundation, 675 Mass Ave,\n";
191 cout << "Cambridge, MA 02139, USA.\n";
193 | T_XYZZY {cout << "Nothing happens.\n";}
194 | T_INVENTORY {cout << "You're not carrying anything.\n";}
195 | T_LOOK {cout << "You're in a twisty little maze of passages, all alike.\n";}
197 cout << "If you were to quit now, you would score ";
198 cout << (syms.size() > 350 ? 350 : syms.size());
199 cout << " out of a possible 350.\n";
201 | T_TIME {getrusage(RUSAGE_SELF, &start_time);} '(' exp ')' {
202 getrusage(RUSAGE_SELF, &end_time);
203 cout << (end_time.ru_utime.tv_sec - start_time.ru_utime.tv_sec) +
204 (end_time.ru_stime.tv_sec - start_time.ru_stime.tv_sec) +
205 double(end_time.ru_utime.tv_usec - start_time.ru_utime.tv_usec) / 1e6 +
206 double(end_time.ru_stime.tv_usec - start_time.ru_stime.tv_usec) / 1e6 << 's' << endl;
208 | error ';' {yyclearin; yyerrok;}
209 | error ':' {yyclearin; yyerrok;}
212 exp : T_NUMBER {$$ = $1;}
213 | T_SYMBOL {$$ = $1.eval();}
214 | '\'' T_SYMBOL '\'' {$$ = $2;}
215 | T_LITERAL {$$ = $1;}
216 | T_DIGITS {$$ = $1;}
217 | T_QUOTE {$$ = exstack[0];}
218 | T_QUOTE2 {$$ = exstack[1];}
219 | T_QUOTE3 {$$ = exstack[2];}
220 | T_SYMBOL '(' exprseq ')' {
221 fcn_tab::const_iterator i = find_function($1, $3.nops());
222 if (i->second.is_ginac) {
223 $$ = ((fcnp2)(i->second.p))(ex_to<exprseq>($3), i->second.serial);
225 $$ = (i->second.p)(ex_to<exprseq>($3));
228 | T_DIGITS '=' T_NUMBER {$$ = $3; Digits = ex_to<numeric>($3).to_int();}
229 | T_SYMBOL '=' exp {$$ = $3; const_cast<symbol&>(ex_to<symbol>($1)).assign($3);}
230 | exp T_EQUAL exp {$$ = $1 == $3;}
231 | exp T_NOTEQ exp {$$ = $1 != $3;}
232 | exp '<' exp {$$ = $1 < $3;}
233 | exp T_LESSEQ exp {$$ = $1 <= $3;}
234 | exp '>' exp {$$ = $1 > $3;}
235 | exp T_GREATEREQ exp {$$ = $1 >= $3;}
236 | exp '+' exp {$$ = $1 + $3;}
237 | exp '-' exp {$$ = $1 - $3;}
238 | exp '*' exp {$$ = $1 * $3;}
239 | exp '/' exp {$$ = $1 / $3;}
240 | '-' exp %prec NEG {$$ = -$2;}
241 | '+' exp %prec NEG {$$ = $2;}
242 | exp '^' exp {$$ = power($1, $3);}
243 | exp '!' {$$ = factorial($1);}
244 | '(' exp ')' {$$ = $2;}
245 | '{' list_or_empty '}' {$$ = $2;}
246 | '[' matrix ']' {$$ = lst_to_matrix(ex_to<lst>($2));}
249 exprseq : exp {$$ = exprseq($1);}
250 | exprseq ',' exp {exprseq es(ex_to<exprseq>($1)); $$ = es.append($3);}
253 list_or_empty: /* empty */ {$$ = *new lst;}
257 list : exp {$$ = lst($1);}
258 | list ',' exp {lst l(ex_to<lst>($1)); $$ = l.append($3);}
261 matrix : '[' row ']' {$$ = lst($2);}
262 | matrix ',' '[' row ']' {lst l(ex_to<lst>($1)); $$ = l.append($4);}
265 row : exp {$$ = lst($1);}
266 | row ',' exp {lst l(ex_to<lst>($1)); $$ = l.append($3);}
275 // Error print routine
278 cerr << s << " at " << yytext << endl;
282 // Push expression "e" onto the expression stack (for ", "" and """)
283 static void push(const ex &e)
285 exstack[2] = exstack[1];
286 exstack[1] = exstack[0];
295 static ex f_collect(const exprseq &e) {return e[0].collect(e[1]);}
296 static ex f_collect_distributed(const exprseq &e) {return e[0].collect(e[1], true);}
297 static ex f_degree(const exprseq &e) {return e[0].degree(e[1]);}
298 static ex f_denom(const exprseq &e) {return e[0].denom();}
299 static ex f_eval1(const exprseq &e) {return e[0].eval();}
300 static ex f_evalf1(const exprseq &e) {return e[0].evalf();}
301 static ex f_evalm(const exprseq &e) {return e[0].evalm();}
302 static ex f_expand(const exprseq &e) {return e[0].expand();}
303 static ex f_gcd(const exprseq &e) {return gcd(e[0], e[1]);}
304 static ex f_has(const exprseq &e) {return e[0].has(e[1]) ? ex(1) : ex(0);}
305 static ex f_lcm(const exprseq &e) {return lcm(e[0], e[1]);}
306 static ex f_lcoeff(const exprseq &e) {return e[0].lcoeff(e[1]);}
307 static ex f_ldegree(const exprseq &e) {return e[0].ldegree(e[1]);}
308 static ex f_lsolve(const exprseq &e) {return lsolve(e[0], e[1]);}
309 static ex f_nops(const exprseq &e) {return e[0].nops();}
310 static ex f_normal1(const exprseq &e) {return e[0].normal();}
311 static ex f_numer(const exprseq &e) {return e[0].numer();}
312 static ex f_numer_denom(const exprseq &e) {return e[0].numer_denom();}
313 static ex f_pow(const exprseq &e) {return pow(e[0], e[1]);}
314 static ex f_sqrt(const exprseq &e) {return sqrt(e[0]);}
315 static ex f_sqrfree1(const exprseq &e) {return sqrfree(e[0]);}
316 static ex f_subs2(const exprseq &e) {return e[0].subs(e[1]);}
317 static ex f_tcoeff(const exprseq &e) {return e[0].tcoeff(e[1]);}
319 #define CHECK_ARG(num, type, fcn) if (!is_a<type>(e[num])) throw(std::invalid_argument("argument " #num " to " #fcn "() must be a " #type))
321 static ex f_charpoly(const exprseq &e)
323 CHECK_ARG(0, matrix, charpoly);
324 CHECK_ARG(1, symbol, charpoly);
325 return ex_to<matrix>(e[0]).charpoly(ex_to<symbol>(e[1]));
328 static ex f_coeff(const exprseq &e)
330 CHECK_ARG(2, numeric, coeff);
331 return e[0].coeff(e[1], ex_to<numeric>(e[2]).to_int());
334 static ex f_content(const exprseq &e)
336 CHECK_ARG(1, symbol, content);
337 return e[0].content(ex_to<symbol>(e[1]));
340 static ex f_decomp_rational(const exprseq &e)
342 CHECK_ARG(1, symbol, decomp_rational);
343 return decomp_rational(e[0], ex_to<symbol>(e[1]));
346 static ex f_determinant(const exprseq &e)
348 CHECK_ARG(0, matrix, determinant);
349 return ex_to<matrix>(e[0]).determinant();
352 static ex f_diag(const exprseq &e)
354 unsigned dim = e.nops();
355 matrix &m = *new matrix(dim, dim);
356 for (unsigned i=0; i<dim; i++)
357 m.set(i, i, e.op(i));
361 static ex f_diff2(const exprseq &e)
363 CHECK_ARG(1, symbol, diff);
364 return e[0].diff(ex_to<symbol>(e[1]));
367 static ex f_diff3(const exprseq &e)
369 CHECK_ARG(1, symbol, diff);
370 CHECK_ARG(2, numeric, diff);
371 return e[0].diff(ex_to<symbol>(e[1]), ex_to<numeric>(e[2]).to_int());
374 static ex f_divide(const exprseq &e)
377 if (divide(e[0], e[1], q))
383 static ex f_eval2(const exprseq &e)
385 CHECK_ARG(1, numeric, eval);
386 return e[0].eval(ex_to<numeric>(e[1]).to_int());
389 static ex f_evalf2(const exprseq &e)
391 CHECK_ARG(1, numeric, evalf);
392 return e[0].evalf(ex_to<numeric>(e[1]).to_int());
395 static ex f_find(const exprseq &e)
398 e[0].find(e[1], found);
402 static ex f_inverse(const exprseq &e)
404 CHECK_ARG(0, matrix, inverse);
405 return ex_to<matrix>(e[0]).inverse();
408 static ex f_is(const exprseq &e)
410 CHECK_ARG(0, relational, is);
411 return (bool)ex_to<relational>(e[0]) ? ex(1) : ex(0);
414 class apply_map_function : public map_function {
417 apply_map_function(const ex & a) : apply(a) {}
418 virtual ~apply_map_function() {}
419 ex operator()(const ex & e) { return apply.subs(wild() == e, true); }
422 static ex f_map(const exprseq &e)
424 apply_map_function fcn(e[1]);
425 return e[0].map(fcn);
428 static ex f_match(const exprseq &e)
431 if (e[0].match(e[1], repl_lst))
437 static ex f_normal2(const exprseq &e)
439 CHECK_ARG(1, numeric, normal);
440 return e[0].normal(ex_to<numeric>(e[1]).to_int());
443 static ex f_op(const exprseq &e)
445 CHECK_ARG(1, numeric, op);
446 int n = ex_to<numeric>(e[1]).to_int();
447 if (n < 0 || n >= (int)e[0].nops())
448 throw(std::out_of_range("second argument to op() is out of range"));
452 static ex f_prem(const exprseq &e)
454 CHECK_ARG(2, symbol, prem);
455 return prem(e[0], e[1], ex_to<symbol>(e[2]));
458 static ex f_primpart(const exprseq &e)
460 CHECK_ARG(1, symbol, primpart);
461 return e[0].primpart(ex_to<symbol>(e[1]));
464 static ex f_quo(const exprseq &e)
466 CHECK_ARG(2, symbol, quo);
467 return quo(e[0], e[1], ex_to<symbol>(e[2]));
470 static ex f_rem(const exprseq &e)
472 CHECK_ARG(2, symbol, rem);
473 return rem(e[0], e[1], ex_to<symbol>(e[2]));
476 static ex f_series(const exprseq &e)
478 CHECK_ARG(2, numeric, series);
479 return e[0].series(e[1], ex_to<numeric>(e[2]).to_int());
482 static ex f_sprem(const exprseq &e)
484 CHECK_ARG(2, symbol, sprem);
485 return sprem(e[0], e[1], ex_to<symbol>(e[2]));
488 static ex f_sqrfree2(const exprseq &e)
490 CHECK_ARG(1, lst, sqrfree);
491 return sqrfree(e[0], ex_to<lst>(e[1]));
494 static ex f_subs3(const exprseq &e)
496 CHECK_ARG(1, lst, subs);
497 CHECK_ARG(2, lst, subs);
498 return e[0].subs(ex_to<lst>(e[1]), ex_to<lst>(e[2]));
501 static ex f_trace(const exprseq &e)
503 CHECK_ARG(0, matrix, trace);
504 return ex_to<matrix>(e[0]).trace();
507 static ex f_transpose(const exprseq &e)
509 CHECK_ARG(0, matrix, transpose);
510 return ex_to<matrix>(e[0]).transpose();
513 static ex f_unassign(const exprseq &e)
515 CHECK_ARG(0, symbol, unassign);
516 const_cast<symbol&>(ex_to<symbol>(e[0])).unassign();
520 static ex f_unit(const exprseq &e)
522 CHECK_ARG(1, symbol, unit);
523 return e[0].unit(ex_to<symbol>(e[1]));
526 static ex f_dummy(const exprseq &e)
528 throw(std::logic_error("dummy function called (shouldn't happen)"));
531 // Tables for initializing the "fcns" map and the function help topics
537 static const fcn_init builtin_fcns[] = {
538 {"charpoly", fcn_desc(f_charpoly, 2)},
539 {"coeff", fcn_desc(f_coeff, 3)},
540 {"collect", fcn_desc(f_collect, 2)},
541 {"collect_distributed", fcn_desc(f_collect_distributed, 2)},
542 {"content", fcn_desc(f_content, 2)},
543 {"decomp_rational", fcn_desc(f_decomp_rational, 2)},
544 {"degree", fcn_desc(f_degree, 2)},
545 {"denom", fcn_desc(f_denom, 1)},
546 {"determinant", fcn_desc(f_determinant, 1)},
547 {"diag", fcn_desc(f_diag, 0)},
548 {"diff", fcn_desc(f_diff2, 2)},
549 {"diff", fcn_desc(f_diff3, 3)},
550 {"divide", fcn_desc(f_divide, 2)},
551 {"eval", fcn_desc(f_eval1, 1)},
552 {"eval", fcn_desc(f_eval2, 2)},
553 {"evalf", fcn_desc(f_evalf1, 1)},
554 {"evalf", fcn_desc(f_evalf2, 2)},
555 {"evalm", fcn_desc(f_evalm, 1)},
556 {"expand", fcn_desc(f_expand, 1)},
557 {"find", fcn_desc(f_find, 2)},
558 {"gcd", fcn_desc(f_gcd, 2)},
559 {"has", fcn_desc(f_has, 2)},
560 {"inverse", fcn_desc(f_inverse, 1)},
561 {"is", fcn_desc(f_is, 1)},
562 {"lcm", fcn_desc(f_lcm, 2)},
563 {"lcoeff", fcn_desc(f_lcoeff, 2)},
564 {"ldegree", fcn_desc(f_ldegree, 2)},
565 {"lsolve", fcn_desc(f_lsolve, 2)},
566 {"map", fcn_desc(f_map, 2)},
567 {"match", fcn_desc(f_match, 2)},
568 {"nops", fcn_desc(f_nops, 1)},
569 {"normal", fcn_desc(f_normal1, 1)},
570 {"normal", fcn_desc(f_normal2, 2)},
571 {"numer", fcn_desc(f_numer, 1)},
572 {"numer_denom", fcn_desc(f_numer_denom, 1)},
573 {"op", fcn_desc(f_op, 2)},
574 {"pow", fcn_desc(f_pow, 2)},
575 {"prem", fcn_desc(f_prem, 3)},
576 {"primpart", fcn_desc(f_primpart, 2)},
577 {"quo", fcn_desc(f_quo, 3)},
578 {"rem", fcn_desc(f_rem, 3)},
579 {"series", fcn_desc(f_series, 3)},
580 {"sprem", fcn_desc(f_sprem, 3)},
581 {"sqrfree", fcn_desc(f_sqrfree1, 1)},
582 {"sqrfree", fcn_desc(f_sqrfree2, 2)},
583 {"sqrt", fcn_desc(f_sqrt, 1)},
584 {"subs", fcn_desc(f_subs2, 2)},
585 {"subs", fcn_desc(f_subs3, 3)},
586 {"tcoeff", fcn_desc(f_tcoeff, 2)},
587 {"time", fcn_desc(f_dummy, 0)},
588 {"trace", fcn_desc(f_trace, 1)},
589 {"transpose", fcn_desc(f_transpose, 1)},
590 {"unassign", fcn_desc(f_unassign, 1)},
591 {"unit", fcn_desc(f_unit, 2)},
592 {NULL, fcn_desc(f_dummy, 0)} // End marker
595 struct fcn_help_init {
600 static const fcn_help_init builtin_help[] = {
601 {"acos", "inverse cosine function"},
602 {"acosh", "inverse hyperbolic cosine function"},
603 {"asin", "inverse sine function"},
604 {"asinh", "inverse hyperbolic sine function"},
605 {"atan", "inverse tangent function"},
606 {"atan2", "inverse tangent function with two arguments"},
607 {"atanh", "inverse hyperbolic tangent function"},
608 {"beta", "Beta function"},
609 {"binomial", "binomial function"},
610 {"cos", "cosine function"},
611 {"cosh", "hyperbolic cosine function"},
612 {"exp", "exponential function"},
613 {"factorial", "factorial function"},
614 {"lgamma", "natural logarithm of Gamma function"},
615 {"tgamma", "Gamma function"},
616 {"log", "natural logarithm"},
617 {"psi", "psi function\npsi(x) is the digamma function, psi(n,x) the nth polygamma function"},
618 {"sin", "sine function"},
619 {"sinh", "hyperbolic sine function"},
620 {"tan", "tangent function"},
621 {"tanh", "hyperbolic tangent function"},
622 {"zeta", "zeta function\nzeta(x) is Riemann's zeta function, zeta(n,x) its nth derivative"},
623 {"Li2", "dilogarithm"},
624 {"Li3", "trilogarithm"},
625 {"Order", "order term function (for truncated power series)"},
626 {"Derivative", "inert differential operator"},
627 {NULL, NULL} // End marker
630 #include "ginsh_extensions.h"
634 * Add functions to ginsh
637 // Functions from fcn_init array
638 static void insert_fcns(const fcn_init *p)
641 fcns.insert(make_pair(string(p->name), p->desc));
646 static ex f_ginac_function(const exprseq &es, int serial)
648 return function(serial, es).eval(1);
651 // All registered GiNaC functions
652 void GiNaC::ginsh_get_ginac_functions(void)
654 vector<function_options>::const_iterator i = function::registered_functions().begin(), end = function::registered_functions().end();
657 fcns.insert(make_pair(i->get_name(), fcn_desc(f_ginac_function, i->get_nparams(), serial)));
665 * Find a function given a name and number of parameters. Throw exceptions on error.
668 static fcn_tab::const_iterator find_function(const ex &sym, int req_params)
670 const string &name = ex_to<symbol>(sym).get_name();
671 typedef fcn_tab::const_iterator I;
672 pair<I, I> b = fcns.equal_range(name);
673 if (b.first == b.second)
674 throw(std::logic_error("unknown function '" + name + "'"));
676 for (I i=b.first; i!=b.second; i++)
677 if ((i->second.num_params == 0) || (i->second.num_params == req_params))
680 throw(std::logic_error("invalid number of arguments to " + name + "()"));
685 * Insert help strings
688 // Normal help string
689 static void insert_help(const char *topic, const char *str)
691 help.insert(make_pair(string(topic), string(str)));
694 // Help string for functions, automatically generates synopsis
695 static void insert_fcn_help(const char *name, const char *str)
697 typedef fcn_tab::const_iterator I;
698 pair<I, I> b = fcns.equal_range(name);
699 if (b.first != b.second) {
700 string help_str = string(name) + "(";
701 for (int i=0; i<b.first->second.num_params; i++) {
704 help_str += "expression";
708 help.insert(make_pair(string(name), help_str));
712 // Help strings for functions from fcn_help_init array
713 static void insert_help(const fcn_help_init *p)
716 insert_fcn_help(p->name, p->help);
726 // Help for a given topic
727 static void print_help(const string &topic)
729 typedef help_tab::const_iterator I;
730 pair<I, I> b = help.equal_range(topic);
731 if (b.first == b.second)
732 cout << "no help for '" << topic << "'\n";
734 for (I i=b.first; i!=b.second; i++)
735 cout << i->second << endl;
739 // List of help topics
740 static void print_help_topics(void)
742 cout << "Available help topics:\n";
743 help_tab::const_iterator i;
744 string last_name = string("*");
746 for (i=help.begin(); i!=help.end(); i++) {
747 // Don't print duplicates
748 if (i->first != last_name) {
753 last_name = i->first;
756 cout << "\nTo get help for a certain topic, type ?topic\n";
761 * Function name completion functions for readline
764 static char *fcn_generator(const char *text, int state)
766 static int len; // Length of word to complete
767 static fcn_tab::const_iterator index; // Iterator to function being currently considered
769 // If this is a new word to complete, initialize now
771 index = fcns.begin();
775 // Return the next function which partially matches
776 while (index != fcns.end()) {
777 const char *fcn_name = index->first.c_str();
779 if (strncmp(fcn_name, text, len) == 0)
780 return strdup(fcn_name);
785 static char **fcn_completion(const char *text, int start, int end)
787 if (rl_line_buffer[0] == '!') {
788 // For shell commands, revert back to filename completion
789 rl_completion_append_character = orig_completion_append_character;
790 rl_basic_word_break_characters = orig_basic_word_break_characters;
791 rl_completer_word_break_characters = rl_basic_word_break_characters;
792 #if (GINAC_RL_VERSION_MAJOR < 4) || (GINAC_RL_VERSION_MAJOR == 4 && GINAC_RL_VERSION_MINOR < 2)
793 return completion_matches(const_cast<char *>(text), (CPFunction *)filename_completion_function);
795 return rl_completion_matches(text, rl_filename_completion_function);
798 // Otherwise, complete function names
799 rl_completion_append_character = '(';
800 rl_basic_word_break_characters = " \t\n\"#$%&'()*+,-./:;<=>?@[\\]^`{|}~";
801 rl_completer_word_break_characters = rl_basic_word_break_characters;
802 #if (GINAC_RL_VERSION_MAJOR < 4) || (GINAC_RL_VERSION_MAJOR == 4 && GINAC_RL_VERSION_MINOR < 2)
803 return completion_matches(const_cast<char *>(text), (CPFunction *)fcn_generator);
805 return rl_completion_matches(text, fcn_generator);
812 cout << "ginsh - GiNaC Interactive Shell (" << PACKAGE << " V" << VERSION << ")" << endl;
813 cout << " __, _______ Copyright (C) 1999-2002 Johannes Gutenberg University Mainz,\n"
814 << " (__) * | Germany. This is free software with ABSOLUTELY NO WARRANTY.\n"
815 << " ._) i N a C | You are welcome to redistribute it under certain conditions.\n"
816 << "<-------------' For details type `warranty;'.\n" << endl;
817 cout << "Type ?? for a list of help topics." << endl;
824 int main(int argc, char **argv)
826 // Print banner in interactive mode
830 // Init function table
831 insert_fcns(builtin_fcns);
832 insert_fcns(extended_fcns);
833 ginsh_get_ginac_functions();
835 // Init help for operators (automatically generated from man page)
836 insert_help("operators", "Operators in falling order of precedence:");
837 #include "ginsh_op_help.h"
839 // Init help for built-in functions (automatically generated from man page)
840 #include "ginsh_fcn_help.h"
842 // Help for GiNaC functions is added manually
843 insert_help(builtin_help);
844 insert_help(extended_help);
846 // Init readline completer
847 rl_readline_name = argv[0];
848 #if (GINAC_RL_VERSION_MAJOR < 4) || (GINAC_RL_VERSION_MAJOR == 4 && GINAC_RL_VERSION_MINOR < 2)
849 rl_attempted_completion_function = (CPPFunction *)fcn_completion;
851 rl_attempted_completion_function = fcn_completion;
853 orig_completion_append_character = rl_completion_append_character;
854 orig_basic_word_break_characters = rl_basic_word_break_characters;
856 // Init input file list, open first file
857 num_files = argc - 1;
858 file_list = argv + 1;
860 yyin = fopen(*file_list, "r");
862 cerr << "Can't open " << *file_list << endl;
869 // Parse input, catch all remaining exceptions
873 } catch (exception &e) {
874 cerr << e.what() << endl;