2 lily-parser-scheme.cc -- implement Lily_parser bindings
4 source file of the GNU LilyPond music typesetter
6 (c) 2005--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
11 #include "lily-parser.hh"
13 #include "file-name-map.hh"
14 #include "file-name.hh"
15 #include "file-path.hh"
16 #include "international.hh"
17 #include "lily-lexer.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 LY_ASSERT_TYPE (scm_is_string, name, 1);
40 string file = ly_scm2string (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 out_file_name.ext_ = "";
51 out_file_name.root_ = "";
52 if (ly_get_option (ly_symbol2scm ("gui")) != SCM_BOOL_T
53 && ly_get_option (ly_symbol2scm ("strip-output-dir")) == SCM_BOOL_T) {
54 out_file_name.dir_ = "";
57 /* When running from gui, generate output in .ly source directory. */
58 string output_name = output_name_global;
59 if (!output_name.empty ())
61 /* Interpret --output=DIR to mean --output=DIR/BASE. */
63 if (is_dir (output_name))
70 File_name out (output_name);
71 if (is_dir (out.dir_part ()))
73 dir = out.dir_part ();
74 out_file_name = out.file_part ();
78 if (dir != "" && dir != "." && dir != get_working_directory ())
80 global_path.prepend (get_working_directory ());
81 message (_f ("Changing working directory to: `%s'",
86 out_file_name = File_name (output_name);
90 if (!init_name_global.empty ())
91 init = init_name_global;
95 string out_file = out_file_name.to_string ();
96 if (init.length () && global_path.find (init).empty ())
98 warning (_f ("cannot find init file: `%s'", init));
99 warning (_f ("(search path: `%s')",
100 global_path.to_string ().c_str ()));
106 if ((file_name != "-") && file_name.empty ())
108 warning (_f ("cannot find file: `%s'", file));
114 sources.set_path (&global_path);
116 string mapped_fn = map_file_name (file_name);
117 message (_f ("Processing `%s'", mapped_fn.c_str ()));
118 progress_indication ("\n");
120 Lily_parser *parser = new Lily_parser (&sources);
122 parser->parse_file (init, file_name, out_file);
124 error = parser->error_level_;
127 parser->unprotect ();
131 outside the if-else to ensure cleanup fo Sources object,
134 /* TODO: pass renamed input file too. */
135 scm_throw (ly_symbol2scm ("ly-file-failed"),
136 scm_list_1 (ly_string2scm (file_name)));
138 return SCM_UNSPECIFIED;
142 LY_DEFINE (ly_parser_lexer, "ly:parser-lexer",
143 1, 0, 0, (SCM parser_smob),
144 "Return the lexer for @var{parser-smob}.")
146 Lily_parser *parser = unsmob_lily_parser (parser_smob);
147 return parser->lexer_->self_scm ();
150 LY_DEFINE (ly_parser_clone, "ly:parser-clone",
151 1, 0, 0, (SCM parser_smob),
152 "Return a clone of @var{parser-smob}.")
154 LY_ASSERT_SMOB (Lily_parser, parser_smob, 1);
155 Lily_parser *parser = unsmob_lily_parser (parser_smob);
156 Lily_parser *clone = new Lily_parser (*parser);
158 return clone->unprotect ();
161 LY_DEFINE (ly_parser_define_x, "ly:parser-define!",
162 3, 0, 0, (SCM parser_smob, SCM symbol, SCM val),
163 "Bind @var{symbol} to @var{val} in @var{parser-smob}'s module.")
166 LY_ASSERT_SMOB (Lily_parser, parser_smob, 1);
167 Lily_parser *parser = unsmob_lily_parser (parser_smob);
169 LY_ASSERT_TYPE (ly_is_symbol, symbol, 2);
171 parser->lexer_->set_identifier (scm_symbol_to_string (symbol), val);
172 return SCM_UNSPECIFIED;
175 LY_DEFINE (ly_parser_lookup, "ly:parser-lookup",
176 2, 0, 0, (SCM parser_smob, SCM symbol),
177 "Look up @var{symbol} in @var{parser-smob}'s module."
178 " Return @code{'()} if not defined.")
180 LY_ASSERT_SMOB (Lily_parser, parser_smob, 1);
182 Lily_parser *parser = unsmob_lily_parser (parser_smob);
184 LY_ASSERT_TYPE (ly_is_symbol, symbol, 2);
186 SCM val = parser->lexer_->lookup_identifier (ly_scm2string (scm_symbol_to_string (symbol)));
187 if (val != SCM_UNDEFINED)
193 LY_DEFINE (ly_parser_parse_string, "ly:parser-parse-string",
194 2, 0, 0, (SCM parser_smob, SCM ly_code),
195 "Parse the string @var{ly-code} with @var{parser-smob}."
196 " Upon failure, throw @code{ly-file-failed} key.")
198 LY_ASSERT_SMOB (Lily_parser, parser_smob, 1);
199 Lily_parser *parser = unsmob_lily_parser (parser_smob);
200 LY_ASSERT_TYPE (scm_is_string, ly_code, 2);
202 parser->parse_string (ly_scm2string (ly_code));
204 return SCM_UNSPECIFIED;
207 LY_DEFINE (ly_parser_set_note_names, "ly:parser-set-note-names",
208 2, 0, 0, (SCM parser, SCM names),
209 "Replace current note names in @var{parser}."
210 " @var{names} is an alist of symbols. This only has effect"
211 " if the current mode is notes.")
213 LY_ASSERT_SMOB (Lily_parser, parser, 1);
214 Lily_parser *p = unsmob_lily_parser (parser);
216 if (p->lexer_->is_note_state ())
218 p->lexer_->pop_state ();
219 p->lexer_->push_note_state (alist_to_hashq (names));
222 return SCM_UNSPECIFIED;
225 LY_DEFINE (ly_parser_output_name, "ly:parser-output-name",
226 1, 0, 0, (SCM parser),
227 "Return the base name of the output file.")
229 LY_ASSERT_SMOB (Lily_parser, parser, 1);
230 Lily_parser *p = unsmob_lily_parser (parser);
232 return ly_string2scm (p->output_basename_);
235 LY_DEFINE (ly_parser_error, "ly:parser-error",
236 2, 1, 0, (SCM parser, SCM msg, SCM input),
237 "Display an error message and make the parser fail.")
239 LY_ASSERT_SMOB (Lily_parser, parser, 1);
240 Lily_parser *p = unsmob_lily_parser (parser);
242 LY_ASSERT_TYPE (scm_is_string, msg, 2);
243 string s = ly_scm2string (msg);
245 Input *i = unsmob_input (input);
247 p->parser_error (*i, s);
254 LY_DEFINE (ly_parser_clear_error, "ly:parser-clear-error",
255 1, 0, 0, (SCM parser),
256 "Clear the error flag for the parser.")
258 LY_ASSERT_SMOB (Lily_parser, parser, 1);
259 Lily_parser *p = unsmob_lily_parser (parser);
263 p->lexer_->error_level_ = 0;
265 return SCM_UNSPECIFIED;
268 LY_DEFINE (ly_parser_has_error_p, "ly:parser-has-error?",
269 1, 0, 0, (SCM parser),
270 "Does @var{parser} have an error flag?")
272 LY_ASSERT_SMOB (Lily_parser, parser, 1);
273 Lily_parser *p = unsmob_lily_parser (parser);
275 return scm_from_bool (p->error_level_ || p->lexer_->error_level_);