2 lily-parser-scheme.cc -- implement Lily_parser bindings
4 source file of the GNU LilyPond music typesetter
6 (c) 2005--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
11 #include "file-name-map.hh"
12 #include "file-name.hh"
13 #include "file-path.hh"
14 #include "input-smob.hh"
15 #include "international.hh"
16 #include "lily-lexer.hh"
17 #include "lily-parser.hh"
18 #include "ly-module.hh"
20 #include "program-option.hh"
24 /* Do not append `!' suffix, since 1st argument is not modified. */
25 LY_DEFINE (ly_set_point_and_click, "ly:set-point-and-click",
30 warning (_f ("deprecated function called: %s", "ly:set-point-and-click"));
31 return SCM_UNSPECIFIED;
34 LY_DEFINE (ly_parse_file, "ly:parse-file",
36 "Parse a single @code{.ly} file. "
37 "Upon failure, throw @code{ly-file-failed} key.")
39 SCM_ASSERT_TYPE (scm_is_string (name), name, SCM_ARG1, __FUNCTION__, "string");
40 char const *file = scm_i_string_chars (name);
41 char const *extensions[] = {"ly", "", 0};
43 string file_name = global_path.find (file, extensions);
45 /* By default, use base name of input file for output file name,
46 write output to cwd; do not use root and directory parts of input
48 File_name out_file_name (file_name);
50 global_path.append (out_file_name.dir_);
52 out_file_name.ext_ = "";
53 out_file_name.root_ = "";
54 out_file_name.dir_ = "";
56 /* When running from gui, generate output in .ly source directory. */
57 if (output_name_global.empty ()
58 && ly_get_option (ly_symbol2scm ("gui")) == SCM_BOOL_T)
63 output_name_global = f.to_string ();
66 if (!output_name_global.empty ())
69 /* Interpret --output=DIR to mean --output=DIR/BASE. */
71 if (is_dir (output_name_global))
73 dir = output_name_global;
74 output_name_global = "";
78 File_name out (output_name_global);
79 if (is_dir (out.dir_part ()))
81 dir = out.dir_part ();
82 out_file_name = out.file_part ();
86 if (dir != "" && dir != "." && dir != get_working_directory ())
88 global_path.prepend (get_working_directory ());
89 message (_f ("Changing working directory to `%s'",
94 out_file_name = File_name (output_name_global);
98 if (!init_name_global.empty ())
99 init = init_name_global;
103 string out_file = out_file_name.to_string ();
105 if (init.length () && global_path.find (init).empty ())
107 warning (_f ("can't find init file: `%s'", init));
108 warning (_f ("(search path: `%s')",
109 global_path.to_string ().c_str ()));
113 if ((file_name != "-") && global_path.find (file_name).empty ())
115 warning (_f ("can't find file: `%s'", file_name));
116 scm_throw (ly_symbol2scm ("ly-file-failed"),
117 scm_list_1 (scm_makfrom0str (file_name.c_str ())));
122 sources.set_path (&global_path);
124 string mapped_fn = map_file_name (file_name);
125 message (_f ("Processing `%s'", mapped_fn.c_str ()));
126 progress_indication ("\n");
128 Lily_parser *parser = new Lily_parser (&sources);
130 parser->parse_file (init, file_name, out_file);
132 bool error = parser->error_level_;
133 parser->unprotect ();
136 /* TODO: pass renamed input file too. */
137 scm_throw (ly_symbol2scm ("ly-file-failed"),
138 scm_list_1 (scm_makfrom0str (file_name.c_str ())));
140 return SCM_UNSPECIFIED;
143 LY_DEFINE (ly_parse_string, "ly:parse-string",
144 1, 0, 0, (SCM ly_code),
145 "Parse the string LY_CODE. "
146 "Upon failure, throw @code{ly-file-failed} key.")
148 SCM_ASSERT_TYPE (scm_is_string (ly_code), ly_code, SCM_ARG1, __FUNCTION__, "string");
151 sources.set_path (&global_path);
152 Lily_parser *parser = new Lily_parser (&sources);
153 parser->parse_string (ly_scm2string (ly_code));
154 parser->unprotect ();
157 return SCM_UNSPECIFIED;
160 LY_DEFINE (ly_clone_parser, "ly:clone-parser",
161 1, 0, 0, (SCM parser_smob),
162 "Return a clone of PARSER_SMOB.")
164 Lily_parser *parser = unsmob_lily_parser (parser_smob);
165 Lily_parser *clone = new Lily_parser (*parser);
167 return clone->unprotect ();
170 LY_DEFINE (ly_parser_define, "ly:parser-define!",
171 3, 0, 0, (SCM parser_smob, SCM symbol, SCM val),
172 "Bind SYMBOL to VAL in PARSER_SMOB's module.")
174 Lily_parser *parser = unsmob_lily_parser (parser_smob);
175 SCM_ASSERT_TYPE (scm_is_symbol (symbol), symbol, SCM_ARG2, __FUNCTION__, "symbol");
176 SCM_ASSERT_TYPE (parser, parser_smob, SCM_ARG2, __FUNCTION__, "parser");
178 parser->lexer_->set_identifier (scm_symbol_to_string (symbol), val);
179 return SCM_UNSPECIFIED;
182 LY_DEFINE (ly_parser_lookup, "ly:parser-lookup",
183 2, 0, 0, (SCM parser_smob, SCM symbol),
184 "Lookup @var{symbol} in @var{parser_smob}'s module. "
187 Lily_parser *parser = unsmob_lily_parser (parser_smob);
189 SCM_ASSERT_TYPE (scm_is_symbol (symbol), symbol, SCM_ARG2, __FUNCTION__, "symbol");
190 SCM_ASSERT_TYPE (parser, parser_smob, SCM_ARG2, __FUNCTION__, "parser");
192 SCM val = parser->lexer_->lookup_identifier (ly_scm2string (scm_symbol_to_string (symbol)));
193 if (val != SCM_UNDEFINED)
199 LY_DEFINE (ly_parser_parse_string, "ly:parser-parse-string",
200 2, 0, 0, (SCM parser_smob, SCM ly_code),
201 "Parse the string LY_CODE with PARSER_SMOB."
202 "Upon failure, throw @code{ly-file-failed} key.")
204 Lily_parser *parser = unsmob_lily_parser (parser_smob);
206 SCM_ASSERT_TYPE (parser, parser_smob, SCM_ARG1, __FUNCTION__, "parser");
207 SCM_ASSERT_TYPE (scm_is_string (ly_code), ly_code, SCM_ARG2, __FUNCTION__, "string");
209 parser->parse_string (ly_scm2string (ly_code));
211 return SCM_UNSPECIFIED;
214 LY_DEFINE (ly_parser_set_note_names, "ly:parser-set-note-names",
215 2, 0, 0, (SCM parser, SCM names),
216 "Replace current note names in @var{parser}. "
217 "@var{names} is an alist of symbols. "
218 "This only has effect if the current mode is notes.")
220 Lily_parser *p = unsmob_lily_parser (parser);
221 SCM_ASSERT_TYPE (p, parser, SCM_ARG1, __FUNCTION__, "Lilypond parser");
223 if (p->lexer_->is_note_state ())
225 p->lexer_->pop_state ();
226 p->lexer_->push_note_state (alist_to_hashq (names));
229 return SCM_UNSPECIFIED;
232 LY_DEFINE (ly_parser_output_name, "ly:parser-output-name",
233 1, 0, 0, (SCM parser),
234 "Return the base name of the output file.")
236 Lily_parser *p = unsmob_lily_parser (parser);
237 SCM_ASSERT_TYPE (p, parser, SCM_ARG1, __FUNCTION__, "Lilypond parser");
239 return scm_makfrom0str (p->output_basename_.c_str ());
242 LY_DEFINE (ly_parser_error, "ly:parser-error",
243 2, 1, 0, (SCM parser, SCM msg, SCM input),
244 "Display an error message, and make the parser fail")
246 Lily_parser *p = unsmob_lily_parser (parser);
247 SCM_ASSERT_TYPE (p, parser, SCM_ARG1, __FUNCTION__, "Lilypond parser");
248 SCM_ASSERT_TYPE (scm_is_string (msg), msg, SCM_ARG2, __FUNCTION__, "string");
249 string s = ly_scm2string (msg);
251 Input *i = unsmob_input (input);
253 p->parser_error (*i, s);