lily/function-documentation.cc

   1 /*
   2   This file is part of LilyPond, the GNU music typesetter.
   3
   4   Copyright (C) 2004--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
   5
   6   LilyPond is free software: you can redistribute it and/or modify
   7   it under the terms of the GNU General Public License as published by
   8   the Free Software Foundation, either version 3 of the License, or
   9   (at your option) any later version.
  10
  11   LilyPond is distributed in the hope that it will be useful,
  12   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14   GNU General Public License for more details.
  15
  16   You should have received a copy of the GNU General Public License
  17   along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include <cstring>
  21 using namespace std;
  22
  23 #include "std-string.hh"
  24 #include "lily-guile.hh"
  25 #include "warn.hh"
  26
  27
  28 static SCM doc_hash_table;
  29
  30 void
  31 ly_check_name (string cxx, string scm_name)
  32 {
  33   string mangle = mangle_cxx_identifier (cxx);
  34   if (mangle != scm_name)
  35     {
  36       programming_error ("wrong cxx name: " + mangle + ", " + cxx +  ", " + scm_name);
  37     }
  38 }
  39
  40
  41 void
  42 ly_add_function_documentation (SCM func,
  43                                     string fname,
  44                                     string varlist,
  45                                     string doc)
  46 {
  47   if (doc == "")
  48     return;
  49
  50   if (!doc_hash_table)
  51     doc_hash_table = scm_permanent_object (scm_c_make_hash_table (59));
  52
  53   string s = string (" - ") + "LilyPond procedure: " + fname + " " + varlist
  54     + "\n" + doc;
  55
  56   scm_set_procedure_property_x (func, ly_symbol2scm ("documentation"),
  57                                 ly_string2scm (s));
  58   SCM entry = scm_cons (ly_string2scm (varlist), ly_string2scm (doc));
  59   scm_hashq_set_x (doc_hash_table, ly_symbol2scm (fname.c_str ()), entry);
  60 }
  61
  62 LY_DEFINE (ly_get_all_function_documentation, "ly:get-all-function-documentation",
  63            0, 0, 0, (),
  64            "Get a hash table with all LilyPond Scheme extension functions.")
  65 {
  66   return doc_hash_table;
  67 }
  68
  69
  70 #include <map>
  71
  72 map<void *, string> type_names;
  73
  74 void
  75 ly_add_type_predicate (void *ptr,
  76                        string name)
  77 {
  78   type_names[ptr] = name;
  79 }
  80
  81 string
  82 predicate_to_typename (void *ptr)
  83 {
  84   if (type_names.find (ptr) == type_names.end ())
  85     {
  86       programming_error ("Unknown type predicate");
  87       return "unknown type";
  88     }
  89   else
  90     return type_names[ptr];
  91 }
  92
  93 /* type predicates. */
  94 #include "global-context.hh"
  95 #include "input.hh"
  96 #include "item.hh"
  97 #include "music.hh"
  98 #include "music-function.hh"
  99 #include "paper-score.hh"
 100 #include "performance.hh"
 101 #include "spanner.hh"
 102 #include "stream-event.hh"
 103
 104 void
 105 init_func_doc ()
 106 {
 107   ly_add_type_predicate ((void*) &is_direction, "direction");
 108   ly_add_type_predicate ((void*) &is_music_function, "Music_function");
 109   ly_add_type_predicate ((void*) &ly_is_port, "port");
 110   ly_add_type_predicate ((void*) &ly_cheap_is_list, "list");
 111   ly_add_type_predicate ((void*) &unsmob_global_context, "Global_context");
 112   ly_add_type_predicate ((void*) &unsmob_input, "Input");
 113   ly_add_type_predicate ((void*) &unsmob_moment, "Moment");
 114   ly_add_type_predicate ((void*) &unsmob_paper_score, "Paper_score");
 115   ly_add_type_predicate ((void*) &unsmob_performance, "Performance");
 116
 117   ly_add_type_predicate ((void*) &is_axis, "axis");
 118   ly_add_type_predicate ((void*) &is_number_pair, "number pair");
 119   ly_add_type_predicate ((void*) &ly_is_list, "list");
 120   ly_add_type_predicate ((void*) &ly_is_procedure, "procedure");
 121   ly_add_type_predicate ((void*) &ly_is_symbol, "symbol");
 122   ly_add_type_predicate ((void*) &scm_is_bool, "boolean");
 123   ly_add_type_predicate ((void*) &scm_is_integer, "integer");
 124   ly_add_type_predicate ((void*) &scm_is_number, "number");
 125   ly_add_type_predicate ((void*) &scm_is_pair, "pair");
 126   ly_add_type_predicate ((void*) &scm_is_rational, "rational");
 127   ly_add_type_predicate ((void*) &scm_is_string, "string");
 128   ly_add_type_predicate ((void*) &scm_is_vector, "vector");
 129   ly_add_type_predicate ((void*) &unsmob_item, "Item");
 130   ly_add_type_predicate ((void*) &unsmob_music, "Music");
 131   ly_add_type_predicate ((void*) &unsmob_spanner, "Spanner");
 132   ly_add_type_predicate ((void*) &unsmob_stream_event, "Stream_event");
 133 }
 134
 135 ADD_SCM_INIT_FUNC (func_doc, init_func_doc);