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 "international.hh"
15 #include "lily-lexer.hh"
16 #include "lily-parser.hh"
17 #include "ly-module.hh"
19 #include "program-option.hh"
23 /* Do not append `!' suffix, since 1st argument is not modified. */
24 LY_DEFINE (ly_set_point_and_click, "ly:set-point-and-click",
29 warning (_f ("deprecated function called: %s", "ly:set-point-and-click"));
30 return SCM_UNSPECIFIED;
33 LY_DEFINE (ly_parse_file, "ly:parse-file",
35 "Parse a single @code{.ly} file. "
36 "Upon failure, throw @code{ly-file-failed} key.")
38 SCM_ASSERT_TYPE (scm_is_string (name), name, SCM_ARG1, __FUNCTION__, "string");
39 string file = ly_scm2string (name);
40 char const *extensions[] = {"ly", "", 0};
42 string file_name = global_path.find (file, extensions);
44 /* By default, use base name of input file for output file name,
45 write output to cwd; do not use root and directory parts of input
47 File_name out_file_name (file_name);
49 global_path.append (out_file_name.dir_);
51 out_file_name.ext_ = "";
52 out_file_name.root_ = "";
53 out_file_name.dir_ = "";
55 /* When running from gui, generate output in .ly source directory. */
56 if (output_name_global.empty ()
57 && ly_get_option (ly_symbol2scm ("gui")) == SCM_BOOL_T)
62 output_name_global = f.to_string ();
65 if (!output_name_global.empty ())
68 /* Interpret --output=DIR to mean --output=DIR/BASE. */
70 if (is_dir (output_name_global))
72 dir = output_name_global;
73 output_name_global = "";
77 File_name out (output_name_global);
78 if (is_dir (out.dir_part ()))
80 dir = out.dir_part ();
81 out_file_name = out.file_part ();
85 if (dir != "" && dir != "." && dir != get_working_directory ())
87 global_path.prepend (get_working_directory ());
88 message (_f ("Changing working directory to: `%s'",
93 out_file_name = File_name (output_name_global);
97 if (!init_name_global.empty ())
98 init = init_name_global;
102 string out_file = out_file_name.to_string ();
104 if (init.length () && global_path.find (init).empty ())
106 warning (_f ("cannot find init file: `%s'", init));
107 warning (_f ("(search path: `%s')",
108 global_path.to_string ().c_str ()));
114 if ((file_name != "-") && file_name.empty ())
116 warning (_f ("cannot find file: `%s'", file));
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 error = parser->error_level_;
135 parser->unprotect ();
139 outside the if-else to ensure cleanup fo Sources object,
142 /* TODO: pass renamed input file too. */
143 scm_throw (ly_symbol2scm ("ly-file-failed"),
144 scm_list_1 (scm_makfrom0str (file_name.c_str ())));
146 return SCM_UNSPECIFIED;
149 LY_DEFINE (ly_parse_string, "ly:parse-string",
150 1, 0, 0, (SCM ly_code),
151 "Parse the string LY_CODE. "
152 "Upon failure, throw @code{ly-file-failed} key.")
154 SCM_ASSERT_TYPE (scm_is_string (ly_code), ly_code, SCM_ARG1, __FUNCTION__, "string");
157 sources.set_path (&global_path);
158 Lily_parser *parser = new Lily_parser (&sources);
159 parser->parse_string (ly_scm2string (ly_code));
160 parser->unprotect ();
163 return SCM_UNSPECIFIED;
166 LY_DEFINE (ly_parser_lexer, "ly:parser-lexer",
167 1, 0, 0, (SCM parser_smob),
168 "Return the lexer for PARSER_SMOB.")
170 Lily_parser *parser = unsmob_lily_parser (parser_smob);
171 return parser->lexer_->self_scm ();
174 LY_DEFINE (ly_parser_clone, "ly:parser-clone",
175 1, 0, 0, (SCM parser_smob),
176 "Return a clone of PARSER_SMOB.")
178 Lily_parser *parser = unsmob_lily_parser (parser_smob);
179 Lily_parser *clone = new Lily_parser (*parser);
181 return clone->unprotect ();
184 LY_DEFINE (ly_parser_define, "ly:parser-define!",
185 3, 0, 0, (SCM parser_smob, SCM symbol, SCM val),
186 "Bind SYMBOL to VAL in PARSER_SMOB's module.")
188 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 parser->lexer_->set_identifier (scm_symbol_to_string (symbol), val);
193 return SCM_UNSPECIFIED;
196 LY_DEFINE (ly_parser_lookup, "ly:parser-lookup",
197 2, 0, 0, (SCM parser_smob, SCM symbol),
198 "Lookup @var{symbol} in @var{parser_smob}'s module. "
201 Lily_parser *parser = unsmob_lily_parser (parser_smob);
203 SCM_ASSERT_TYPE (scm_is_symbol (symbol), symbol, SCM_ARG2, __FUNCTION__, "symbol");
204 SCM_ASSERT_TYPE (parser, parser_smob, SCM_ARG2, __FUNCTION__, "parser");
206 SCM val = parser->lexer_->lookup_identifier (ly_scm2string (scm_symbol_to_string (symbol)));
207 if (val != SCM_UNDEFINED)
213 LY_DEFINE (ly_parser_parse_string, "ly:parser-parse-string",
214 2, 0, 0, (SCM parser_smob, SCM ly_code),
215 "Parse the string LY_CODE with PARSER_SMOB."
216 "Upon failure, throw @code{ly-file-failed} key.")
218 Lily_parser *parser = unsmob_lily_parser (parser_smob);
220 SCM_ASSERT_TYPE (parser, parser_smob, SCM_ARG1, __FUNCTION__, "parser");
221 SCM_ASSERT_TYPE (scm_is_string (ly_code), ly_code, SCM_ARG2, __FUNCTION__, "string");
223 parser->parse_string (ly_scm2string (ly_code));
225 return SCM_UNSPECIFIED;
228 LY_DEFINE (ly_parser_set_note_names, "ly:parser-set-note-names",
229 2, 0, 0, (SCM parser, SCM names),
230 "Replace current note names in @var{parser}. "
231 "@var{names} is an alist of symbols. "
232 "This only has effect if the current mode is notes.")
234 Lily_parser *p = unsmob_lily_parser (parser);
235 SCM_ASSERT_TYPE (p, parser, SCM_ARG1, __FUNCTION__, "Lilypond parser");
237 if (p->lexer_->is_note_state ())
239 p->lexer_->pop_state ();
240 p->lexer_->push_note_state (alist_to_hashq (names));
243 return SCM_UNSPECIFIED;
246 LY_DEFINE (ly_parser_output_name, "ly:parser-output-name",
247 1, 0, 0, (SCM parser),
248 "Return the base name of the output file.")
250 Lily_parser *p = unsmob_lily_parser (parser);
251 SCM_ASSERT_TYPE (p, parser, SCM_ARG1, __FUNCTION__, "Lilypond parser");
253 return scm_makfrom0str (p->output_basename_.c_str ());
256 LY_DEFINE (ly_parser_error, "ly:parser-error",
257 2, 1, 0, (SCM parser, SCM msg, SCM input),
258 "Display an error message, and make the parser fail")
260 Lily_parser *p = unsmob_lily_parser (parser);
261 SCM_ASSERT_TYPE (p, parser, SCM_ARG1, __FUNCTION__, "Lilypond parser");
262 SCM_ASSERT_TYPE (scm_is_string (msg), msg, SCM_ARG2, __FUNCTION__, "string");
263 string s = ly_scm2string (msg);
265 Input *i = unsmob_input (input);
267 p->parser_error (*i, s);