4 Ann Hell Ex Machina - Music Software
5 Copyright (C) 2003/2005 Angel Ortega <angel@triptico.com>
7 compiler.y - Scripting language YACC parser
9 This program is free software; you can redistribute it and/or
10 modify it under the terms of the GNU General Public License
11 as published by the Free Software Foundation; either version 2
12 of the License, or (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.
23 http://www.triptico.com
34 #include "ss_core.h" /* for ss_debug */
42 void yyerror(char * s
);
44 /* injecting code functions (defined in compiler.l) */
45 int push_code
(char * code
, int times
, int dyn
);
46 int push_code_from_file
(char * file
);
58 static double staccato
;
62 /* parser debugging */
64 #define DEBUGF if(ss_debug)printf
74 static struct named_block
* named_blocks
=NULL
;
75 static int n_named_blocks
=0;
76 static int named_blocks_size
=0;
86 static struct group
* groups
=NULL
;
87 static int n_groups
=0;
88 static int groups_size
=0;
97 static struct mark
* marks
=NULL
;
99 static int marks_size
=0;
110 static struct arp
* arps
=NULL
;
112 static int arps_size
=0;
114 static double arp_delay
;
115 static int arp_transpose
;
116 static float arp_volume
;
117 static int arp_track
;
119 int compiler_error
=0;
125 ********************/
127 void c_err
(char * e1
, char * e2
, char * e3
)
128 /* reports an error from the compiler */
131 if
(e1
!= NULL
) printf
(" %s", e1
);
132 if
(e2
!= NULL
) printf
(" %s", e2
);
133 if
(e3
!= NULL
) printf
(" %s", e3
);
134 printf
(" in line %d\n", yyline
);
140 static void forward
(double step
)
141 /* moves forward current time */
146 /* quantizations could be done here */
152 static int set_named_block
(char * name
, char * block
)
153 /* sets a named block */
157 /* find first if block is previously defined */
158 for
(n
=0;n
< n_named_blocks
;n
++)
160 if
(strcmp
(name
, named_blocks
[n
].name
) == 0)
162 free
(named_blocks
[n
].block
);
167 if
(n
== n_named_blocks
)
169 /* need to expand? */
170 if
(n_named_blocks
== named_blocks_size
)
172 named_blocks_size
+= 4;
174 named_blocks
=(struct named_block
*)
175 realloc
(named_blocks
,
177 sizeof
(struct named_block
));
183 strncpy
(named_blocks
[n
].name
, name
, sizeof
(named_blocks
[n
].name
));
184 named_blocks
[n
].block
=block
;
190 static void insert_named_block
(char * name
)
191 /* inserts a named block */
195 for
(n
=0;n
< n_named_blocks
;n
++)
197 if
(strcmp
(name
, named_blocks
[n
].name
) == 0)
199 push_code
(named_blocks
[n
].block
, 1, 0);
204 c_err
("block-not-found", name
, NULL
);
208 static int insert_file
(char * filename
)
210 if
(!push_code_from_file
(filename
))
212 c_err
("script-not-found", filename
, NULL
);
222 static int push_group
(void)
223 /* starts a new group of notes */
225 if
(n_groups
== groups_size
)
229 groups
=(struct group
*) realloc
(groups
,
230 groups_size
* sizeof
(struct group
));
233 groups
[n_groups
].start
=cur_time
;
234 groups
[n_groups
].gliss
=0.0;
235 groups
[n_groups
].max
=0.0;
243 static int next_group_part
(void)
248 c_err
("missing-start-of-group", NULL
, NULL
);
252 /* store maximum frame */
253 if
(groups
[n_groups
- 1].max
< cur_time
)
254 groups
[n_groups
- 1].max
=cur_time
;
256 /* add glissando delay */
257 groups
[n_groups
- 1].gliss
+= gliss
;
260 cur_time
=groups
[n_groups
- 1].start
+ groups
[n_groups
- 1].gliss
;
266 static int pop_group
(void)
267 /* finishes a group, moving the frame to the end of the longer part */
271 c_err
("missing-start-of-group", NULL
, NULL
);
277 cur_time
=groups
[n_groups
].max
;
285 static void add_mark
(char * name
)
286 /* creates a new mark */
288 if
(n_marks
== marks_size
)
292 marks
=(struct mark
*) realloc
(marks
,
293 marks_size
* sizeof
(struct mark
));
296 strncpy
(marks
[n_marks
].name
, name
, sizeof
(marks
[n_marks
].name
));
297 marks
[n_marks
].time
=cur_time
;
303 static void find_mark
(char * name
, int set
)
304 /* finds a mark by name, optionally moving time cursor there */
308 for
(n
=0;n
< n_marks
;n
++)
310 if
(strcmp
(marks
[n
].name
, name
) == 0)
314 if
(cur_time
> marks
[n
].time
)
315 c_err
("mark-overpassed", name
, NULL
);
317 cur_time
=marks
[n
].time
;
320 if
(cur_time
!= marks
[n
].time
)
321 c_err
("mark-mismatch", name
, NULL
);
327 c_err
("mark-not-found", name
, NULL
);
333 static void arp_default
(void)
334 /* resets arpeggiator values to the default ones */
343 static void add_arp
(void)
344 /* adds an arpeggiator note */
346 /* if the note is exactly the same, do nothing */
347 if
(arp_delay
== 0.0 && arp_transpose
== 0 &&
348 arp_volume
== 1.0 && arp_track
== track
)
351 if
(n_arps
== arps_size
)
355 arps
=(struct arp
*) realloc
(arps
,
356 arps_size
* sizeof
(struct arp
));
359 arps
[n_arps
].delay
=arp_delay
;
360 arps
[n_arps
].transpose
=arp_transpose
;
361 arps
[n_arps
].volume
=arp_volume
;
362 arps
[n_arps
].track
=arp_track
;
371 static void add_note_event
(int note
)
372 /* adds a note event */
378 /* calculate the note */
379 np
=note
+ transpose
+ (octave
* 12);
381 /* is note out of range? */
382 if
(np
< 0 || np
> 127)
384 c_err
("note-out-of-range", NULL
, NULL
);
388 e.note.type
=SONG_EV_NOTE
;
389 e.note.time
=cur_time
;
392 e.note.len
=length
* staccato
;
397 printf
("Note(%d): %lf %d %lf %lf\n",
398 track
, cur_time
, np
, length
, volume
);
400 /* add arpeggiator repetitions */
401 for
(n
=0;n
< n_arps
;n
++)
403 e.note.time
=cur_time
+ arps
[n
].delay
;
404 e.note.trk_id
=arps
[n
].track
;
405 e.note.note
=np
+ arps
[n
].transpose
;
406 e.note.vol
=volume
* arps
[n
].volume
;
413 static void add_tempo_event
(int trk_id
, double tempo
)
417 e.tempo.type
=SONG_EV_TEMPO
;
418 e.tempo.time
=cur_time
;
419 e.tempo.trk_id
=trk_id
;
425 static void add_meter_event
(int trk_id
, int num
, int den
)
429 e.meter.type
=SONG_EV_METER
;
430 e.meter.time
=cur_time
;
431 e.meter.trk_id
=trk_id
;
437 static void add_measure_event
(void)
441 e.generic.type
=SONG_EV_MEASURE
;
442 e.generic.time
=cur_time
;
448 static void add_ss_sustain_event
(double sustain
)
452 e.ss_sustain.type
=SONG_EV_SS_SUSTAIN
;
453 e.ss_sustain.time
=cur_time
;
454 e.ss_sustain.trk_id
=track
;
455 e.ss_sustain.sustain
=sustain
;
461 static void add_ss_channel_event
(int channel
, float vol
)
465 e.ss_channel.type
=SONG_EV_SS_CHANNEL
;
466 e.ss_channel.time
=cur_time
;
467 e.ss_channel.trk_id
=track
;
468 e.ss_channel.channel
=channel
;
469 e.ss_channel.vol
=vol
;
475 static void add_ss_wav_event
(char * wav_file
, int base
, int min
, int max
,
476 double loop_start
, double loop_end
)
480 e.ss_wav.type
=SONG_EV_SS_WAV
;
481 e.ss_wav.time
=cur_time
;
482 e.ss_wav.trk_id
=track
;
483 e.ss_wav.file
=wav_file
;
487 e.ss_wav.loop_start
=loop_start
;
488 e.ss_wav.loop_end
=loop_end
;
493 static void add_ss_pat_event
(char * pat_file
)
497 e.ss_pat.type
=SONG_EV_SS_PAT
;
498 e.ss_pat.time
=cur_time
;
499 e.ss_pat.trk_id
=track
;
500 e.ss_pat.file
=pat_file
;
506 static void add_ss_eff_event
(int type
, int channel
, double size
, float gain
,
507 double depth
, double freq
, double phase
, float initial
, float final
)
512 e.ss_eff.time
=cur_time
;
513 e.ss_eff.trk_id
=track
;
514 e.ss_eff.channel
=channel
;
517 e.ss_eff.depth
=depth
;
519 e.ss_eff.phase
=phase
;
520 e.ss_eff.initial
=initial
;
521 e.ss_eff.final
=final
;
527 static void add_ss_pitch_stretch
(int note
, double len
, float vol
)
531 e.ss_pitch_stretch.type
=SONG_EV_SS_PITCH_STRETCH
;
532 e.ss_pitch_stretch.time
=cur_time
;
533 e.ss_pitch_stretch.trk_id
=track
;
534 e.ss_pitch_stretch.note
=note
;
535 e.ss_pitch_stretch.len
=len
;
536 e.ss_pitch_stretch.vol
=vol
;
542 static void add_midi_channel_event
(int channel
)
546 e.midi_channel.type
=SONG_EV_MIDI_CHANNEL
;
547 e.midi_channel.time
=cur_time
;
548 e.midi_channel.trk_id
=track
;
549 e.midi_channel.channel
=channel
;
555 static void add_midi_program_event
(int program
)
559 e.midi_program.type
=SONG_EV_MIDI_PROGRAM
;
560 e.midi_program.time
=cur_time
;
561 e.midi_program.trk_id
=track
;
562 e.midi_program.program
=program
;
568 static void init_track
(void)
569 /* sets the default values for a new track */
579 /* groups should not cross track boundaries */
582 /* reset arpeggiator */
596 %token
<i
> P_INTEGER S_INTEGER
597 %token
<d
> P_REAL S_REAL
598 %token
<i
> NOTE_P NOTE_T3 NOTE_T5
599 %token
<p
> NEW_MARK GOTO_MARK ASSERT_MARK
601 %token
<p
> BLOCK BLK_ASSIGN BLK_INSERT FILE_INSERT
604 %token
<i
> XC_MSECS XC_ABSNOTE
606 %token SS_SEP SS_WAV SS_LOOP_WAV SS_PAT SS_SUSTAIN SS_VIBRATO SS_CHANNEL SS_VOL
608 %token SS_EFF_DELAY SS_EFF_ECHO SS_EFF_COMB SS_EFF_ALLPASS SS_EFF_FLANGER
609 %token SS_EFF_WOBBLE SS_EFF_SQWOBBLE SS_EFF_FADER SS_EFF_REVERB SS_EFF_OFF
611 %token SS_PITCH_STRETCH SS_TIME_STRETCH
613 %token MIDI_CHANNEL MIDI_PROGRAM MIDI_GENERIC
615 %type
<i
> integer note note_pitch rest
616 %type
<d
> real p_number number note_length
618 %type
<d
> arp_list arp_note
643 /* absolute octave */
647 /* relative octave */
651 /* absolute volume */
655 /* absolute volume */
659 /* relative volume */
676 /* group delimiter */
689 /* measure mark event */
714 add_tempo_event
(-1, $2);
716 |
'M' P_INTEGER
'/' P_INTEGER
{
717 /* meter (time signature) setting */
718 add_meter_event
(-1, $2, $4);
721 | BLOCK
'*' P_INTEGER
{
723 push_code
($1, $3, 1);
727 set_named_block
($2, $1);
730 /* insert named block */
731 insert_named_block
($1);
745 P_INTEGER
{ $$
= $1; }
746 | S_INTEGER
{ $$
= $1; }
751 | S_REAL
{ $$
= $1; }
755 P_INTEGER
{ $$
= (double) $1; }
756 | P_REAL
{ $$
= $1; }
760 integer
{ $$
= (double) $1; }
765 note_pitch
{ $$
= $1; }
766 | note note_length
{ $$
= $1; length
=$2; }
767 | note
'~' number
{ $$
= $1; DEBUGF
("imm volume: %lf\n", $3); }
772 | note_pitch
'&' { $$
= $1 - 1; }
773 | note_pitch
'#' { $$
= $1 + 1; }
774 | note_pitch
'\'' { $$
= $1 + 12; }
775 | note_pitch
',' { $$
= $1 - 12; }
779 P_INTEGER
{ $$
= 1 / (double) $1; }
780 | note_length NOTE_T3
{ $$
= $1 * 2.0 / 3.0; }
781 | note_length NOTE_T5
{ $$
= $1 * 4.0 / 5.0; }
782 | note_length
'*' p_number
{ $$
= $1 * $3; }
783 | note_length
'.' { $$
= $1 * 1.5; }
789 /* rest with length */
796 /* empty arpeggiator */
805 /* first arpeggiator note */
809 | arp_list
',' arp_note
{
810 /* rest of arpeggiator notes */
817 /* arpeggiator delay */
820 | arp_note
'~' number
{
821 /* arpeggiator volume */
822 arp_volume
=(float)$3;
824 | arp_note S_INTEGER
{
825 /* arpeggiator transpose */
828 | arp_note
'@' P_INTEGER
{
829 /* arpeggiator track */
835 P_INTEGER
{ $$
= $1; }
836 | XC_ABSNOTE
{ $$
= $1; }
840 SS_WAV XC_STR xc_absnote
{
841 /* load .wav file with just one note */
842 add_ss_wav_event
($2, $3, $3, $3, -1.0, -1.0);
844 | SS_WAV XC_STR xc_absnote xc_absnote xc_absnote
{
846 add_ss_wav_event
($2, $3, $4, $5, -1.0, -1.0);
848 | SS_WAV XC_STR xc_absnote xc_absnote xc_absnote number number
{
849 /* load .wav file, with loop boundaries */
850 add_ss_wav_event
($2, $3, $4, $5, $6, $7);
854 add_ss_pat_event
($2);
856 | SS_SUSTAIN XC_MSECS
{
858 add_ss_sustain_event
($2);
860 | SS_CHANNEL integer number
{
861 /* sets volume for a channel */
862 add_ss_channel_event
($2, $3);
864 | SS_VOL number number
{
865 /* set vol for 2 channels */
866 add_ss_channel_event
(0, $2);
867 add_ss_channel_event
(1, $3);
869 | SS_VOL number number number
{
870 /* set vol for 3 channels */
871 add_ss_channel_event
(0, $2);
872 add_ss_channel_event
(1, $3);
873 add_ss_channel_event
(2, $4);
875 | SS_VOL number number number number
{
876 /* set vol for 4 channels */
877 add_ss_channel_event
(0, $2);
878 add_ss_channel_event
(1, $3);
879 add_ss_channel_event
(2, $4);
880 add_ss_channel_event
(3, $5);
882 | SS_VOL number number number number number number
{
883 /* set vol for 6 channels */
884 add_ss_channel_event
(0, $2);
885 add_ss_channel_event
(1, $3);
886 add_ss_channel_event
(2, $4);
887 add_ss_channel_event
(3, $5);
888 add_ss_channel_event
(4, $6);
889 add_ss_channel_event
(5, $7);
891 | SS_EFF_DELAY integer XC_MSECS
{
893 add_ss_eff_event
(SONG_EV_SS_EFF_DELAY
,
894 $2, $3, 0, 0, 0, 0, 0, 0);
897 | SS_EFF_ECHO integer XC_MSECS number
{
899 add_ss_eff_event
(SONG_EV_SS_EFF_ECHO
,
900 $2, $3, $4, 0, 0, 0, 0, 0);
903 | SS_EFF_COMB integer XC_MSECS number
{
905 add_ss_eff_event
(SONG_EV_SS_EFF_COMB
,
906 $2, $3, $4, 0, 0, 0, 0, 0);
909 | SS_EFF_ALLPASS integer XC_MSECS number
{
911 add_ss_eff_event
(SONG_EV_SS_EFF_ALLPASS
,
912 $2, $3, $4, 0, 0, 0, 0, 0);
915 | SS_EFF_FLANGER integer XC_MSECS number XC_MSECS number number
{
917 add_ss_eff_event
(SONG_EV_SS_EFF_FLANGER
,
918 $2, $3, $4, $5, $6, $7, 0, 0);
921 | SS_EFF_WOBBLE integer number number
{
923 add_ss_eff_event
(SONG_EV_SS_EFF_WOBBLE
,
924 $2, 0, 0, 0, $3, $4, 0, 0);
927 | SS_EFF_SQWOBBLE integer number number
{
928 /* square wobble effect */
929 add_ss_eff_event
(SONG_EV_SS_EFF_SQWOBBLE
,
930 $2, 0, 0, 0, $3, $4, 0, 0);
933 | SS_EFF_FADER integer XC_MSECS number number
{
935 add_ss_eff_event
(SONG_EV_SS_EFF_FADER
,
936 $2, $3, 0, 0, 0, 0, $4, $5);
939 | SS_EFF_REVERB integer
{
941 add_ss_eff_event
(SONG_EV_SS_EFF_REVERB
,
942 $2, 0, 0, 0, 0, 0, 0, 0);
945 | SS_EFF_OFF integer
{
947 add_ss_eff_event
(SONG_EV_SS_EFF_OFF
,
948 $2, 0, 0, 0, 0, 0, 0, 0);
951 | SS_PITCH_STRETCH xc_absnote number number
{
952 /* pitch stretch note */
953 add_ss_pitch_stretch
($2, $3, $4);
958 | MIDI_CHANNEL integer
{
960 add_midi_channel_event
($2);
963 | MIDI_PROGRAM integer
{
965 add_midi_program_event
($2);
971 void yyerror(char * s
)
973 c_err
(s
, NULL
, NULL
);
981 push_code
("!this-is-a-mark", 1, 0);
982 push_code
("< c1 ; e& ; g>", 1, 0);
983 push_code
("^this-is-a-mark", 1, 0);
984 push_code
("x4,2-1,2.+4", 1, 0);
985 push_code
("a b'' c,, ", 1, 0);
986 push_code
("v0.1 (d8 v+0.1)*10", 1, 0);
987 push_code
("t1 t-2 t+3", 1, 0);
988 push_code
("{ fader -1 100ms 0 1 } r r4. z2 `room_kit.ahs` o4 o+1 o-2 ", 1, 0);
989 push_code
("{ sustain 100ms }", 1, 0);
990 push_code
("T120.0 M4/4 z8 abcde T80 (edcba)=drum1 $drum1 $drum1 ((a&b)*3 (cd)*2)*10", 2, 0);
994 printf
("Exiting main...\n");
999 static void compile_startup
(void)
1005 /* default settings */
1006 add_tempo_event
(-2, 120.0);
1007 add_meter_event
(-2, 4, 4);
1012 int compile
(char * code
)
1016 push_code
(code
, 1, 0);
1018 return
(yyparse() + compiler_error
);
1022 int compile_file
(char * file
)
1026 if
(insert_file
(file
))
1029 return
(yyparse() + compiler_error
);