-%{//-*-Fundamental-*-
-// midi-lexer.l
-
-/*
- yes, i know that midi is not really a (n evolving?) language,
- and that using lex/yacc to parse midi is overkill, as well as
- a grand example of misuse and asking for performance loss.
-
- it is, however, quite robust, simple, and very easy to extend
- incrementally.
- */
-
-/*
- backup rules
-
- after making a change to the lexer rules, run
- flex -b <this lexer file>
- and make sure that
- lex.backup
- contains no backup states, but only the reminder
- Compressed tables always back up.
- (don-t forget to rm lex.yy.cc :-)
- */
-
-#include "string-convert.hh"
-#include "mi2mu-global.hh"
-#include "mi2mu-proto.hh"
-#include "my-midi-lexer.hh"
-#include "midi-parser.hh"
-
-#define YY_USER_ACTION char_count_ += YYLeng(); // ugh
-
-%}
-
-%option c++
-%option noyywrap
-%option nodefault
-%option debug
-%option yyclass="My_midi_lexer"
-%option stack
-
-%x data
-%x event
-%x i8
-%x u8
-%x int16
-%x int32
-%x meta_event
-%x track
-
-U8 [\x00-\xff]
-I8 {U8}
-INT16 {U8}{U8}
-BACKUP_INT16_0 {U8}
-INT32 {INT16}{INT16}
-BACKUP_INT32_0 {U8}
-BACKUP_INT32_1 {U8}{U8}
-BACKUP_INT32_2 {INT16}{U8}
-INT7_8UNSET [\x00-\x7f]
-INT7_8SET [\x80-\xff]
-VARINT {INT7_8SET}{0,3}{INT7_8UNSET}
-BACKUP_VARINT_0 {INT7_8SET}
-BACKUP_VARINT_1 {INT7_8SET}{INT7_8SET}
-BACKUP_VARINT_2 {INT7_8SET}{INT7_8SET}{INT7_8SET}
-
-HEADER MThd
-TRACK MTrk
-BACKUP_TOP_0 MT
-BACKUP_TOP_1 MTh
-BACKUP_TOP_2 MTr
-
-RUNNING_STATUS [\x00-\x5f]
-DATA_ENTRY [\x60-\x79]
-ALL_NOTES_OFF [\x7a-\x7f]
-NOTE_OFF [\x80-\x8f]
-NOTE_ON [\x90-\x9f]
-POLYPHONIC_AFTERTOUCH [\xa0-\xaf]
-CONTROLMODE_CHANGE [\xb0-\xbf]
-PROGRAM_CHANGE [\xc0-\xcf]
-CHANNEL_AFTERTOUCH [\xd0-\xdf]
-PITCHWHEEL_RANGE [\xe0-\xef]
-
-SYSEX_EVENT1 [\xf0]
-SYSEX_EVENT2 [\xf7]
-
-META_EVENT [\xff]
-
-SEQUENCE [\x00][\x02]
-YYTEXT [\x01]
-YYCOPYRIGHT [\x02]
-YYTRACK_NAME [\x03]
-YYINSTRUMENT_NAME [\x04]
-YYLYRIC [\x05]
-YYMARKER [\x06]
-YYCUE_POINT [\x07]
-
-END_OF_TRACK [\x2f][\x00]
-TEMPO [\x51][\x03]
-SMPTE_OFFSET [\x54][\x05]
-TIME [\x58][\x04]
-KEY [\x59][\x02]
-SSME [\0x7f][\x03]
-
-%%
-
-{HEADER} {
- LOGOUT(DEBUG_ver) << "lex: header" << endl;
- yy_push_state(int16);
- yy_push_state(int16);
- yy_push_state(int16);
- yy_push_state(int32);
- return HEADER;
-}
-
-{TRACK} {
- LOGOUT(DEBUG_ver) << "lex: track" << endl;
- yy_push_state(track);
- yy_push_state(int32);
- return TRACK;
-}
-{U8} {
- error(String("top level: header expected: ")
- + String_convert::bin2hex_str(String(*YYText())));
- exit(1);
-}
-{BACKUP_TOP_0} {
- error(String("top level: header expected: ")
- + String_convert::bin2hex_str(String(*(YYText()))));
- exit(1);
-}
-{BACKUP_TOP_1} {
- error(String("top level: header expected: ")
- + String_convert::bin2hex_str(String(*(YYText()))));
- exit(1);
-}
-{BACKUP_TOP_2} {
- error(String("top level: header expected: ")
- + String_convert::bin2hex_str(String(*(YYText()))));
- exit(1);
-}
-<int32>{INT32} { // really signed?
- LOGOUT(DEBUG_ver) << "lex: int32" << endl;
- assert(YYLeng() == 4);
- String str((Byte const*)YYText(), YYLeng());
- yylval.i = String_convert::bin2_i(str);
- yy_pop_state();
- return INT32;
-}
-<int32>{BACKUP_INT32_0} {
- error(String("int32: int32 expected: ")
- + String_convert::bin2hex_str(String(*(YYText()))));
- exit(1);
-}
-<int32>{BACKUP_INT32_1} {
- error(String("int32: int32 expected: ")
- + String_convert::bin2hex_str(String(*(YYText()))));
- exit(1);
-}
-<int32>{BACKUP_INT32_2} {
- error(String("int32: int32 expected: ")
- + String_convert::bin2hex_str(String(*(YYText()))));
- exit(1);
-}
-<int16>{INT16} { // really signed?
- LOGOUT(DEBUG_ver) << "lex: int16" << endl;
- assert(YYLeng() == 2);
- String str((Byte const*)YYText(), YYLeng());
- yylval.i = (short)String_convert::bin2_i(str);
- yy_pop_state();
- return INT16;
-}
-<int16>{BACKUP_INT16_0} {
- error(String("int16: int16 expected: ")
- + String_convert::bin2hex_str(String(*(YYText()))));
- exit(1);
-}
-<i8>{I8} {
- LOGOUT(DEBUG_ver) << "lex: i8" << endl;
- assert(YYLeng() == 1);
-// yylval.byte = *(signed char*)YYText();
- yylval.i = *(signed char*)YYText();
- yy_pop_state();
- return I8;
-}
-<u8>{U8} {
- LOGOUT(DEBUG_ver) << "lex: u8" << endl;
- assert(YYLeng() == 1);
-// yylval.byte = *(Byte*)YYText();
- yylval.i = *(Byte*)YYText();
- yy_pop_state();
- return U8;
-}
-
-<track>{VARINT} {
- String str((Byte const*)YYText(), YYLeng());
- yylval.i = My_midi_lexer::varint2_i(str);
- LOGOUT(DEBUG_ver) << String("lex: track: varint(")
- + String(yylval.i) + "): "
- + String_convert::bin2hex_str(str) << endl;
- yy_push_state(event);
- return VARINT;
-}
-<track>{U8} {
- error(String("track: illegal byte: ")
- + String_convert::bin2hex_str(String(*YYText())));
- exit(1);
-}
-<track>{BACKUP_VARINT_0}{U8} {
- error(String("track: varint expected: ")
- + String_convert::bin2hex_str(String(*(YYText()))));
- exit(1);
-}
-<track>{BACKUP_VARINT_1}{U8} {
- error(String("track: varint expected: ")
- + String_convert::bin2hex_str(String(*(YYText()))));
- exit(1);
-}
-<track>{BACKUP_VARINT_2}{U8} {
- error(String("track: varint expected: ")
- + String_convert::bin2hex_str(String(*(YYText()))));
- exit(1);
-}
-<event>{RUNNING_STATUS} {
-// yylval.byte = *(Byte*)YYText();
-// yylval.i = *(Byte*)YYText();
- yylval.i = running_status_i_;
- LOGOUT(DEBUG_ver) << String ("lex: running status: ") + String(yylval.i) << endl;
- /*
- 'running status' rather means 'missing status'.
- we'll put the running status data back, prepend (unput)
- the running status, and try again.
- */
- yyless(0);
- unput(running_status_i_);
- return RUNNING_STATUS;
-}
-<event>{DATA_ENTRY} {
-// yylval.byte = *(Byte*)YYText();
- yylval.i = *(Byte*)YYText();
- LOGOUT(DEBUG_ver) << String ("lex: undefined data entry: ") + String(yylval.i) << endl;
- yy_pop_state();
- yy_push_state(u8);
- return DATA_ENTRY;
-}
-<event>{ALL_NOTES_OFF} {
- LOGOUT(DEBUG_ver) << "lex: all note off" << endl;
-// yylval.byte = *(Byte*)YYText();
- yylval.i = *(Byte*)YYText();
- LOGOUT(DEBUG_ver) << String ("lex: all notes off: ") + String(yylval.i) << endl;
- yy_pop_state();
- yy_push_state(u8);
- yy_push_state(u8);
- return ALL_NOTES_OFF;
-}
-<event>{NOTE_OFF} {
- LOGOUT(DEBUG_ver) << "lex: note off" << endl;
-// yylval.byte = *(Byte*)YYText();
- yylval.i = *(Byte*)YYText();
- running_status_i_ = yylval.i;
- yy_pop_state();
- yy_push_state(u8);
- yy_push_state(u8);
- return NOTE_OFF;
-}
-<event>{NOTE_ON} {
- LOGOUT(DEBUG_ver) << "lex: note on" << endl;
-// yylval.byte = *(Byte*)YYText();
- yylval.i = *(Byte*)YYText();
- running_status_i_ = yylval.i;
- yy_pop_state();
- yy_push_state(u8);
- yy_push_state(u8);
- return NOTE_ON;
-}
-<event>{POLYPHONIC_AFTERTOUCH} {
- LOGOUT(DEBUG_ver) << "lex: polyphonic aftertouch" << endl;
-// yylval.byte = *(Byte*)YYText();
- yylval.i = *(Byte*)YYText();
- running_status_i_ = yylval.i;
- yy_pop_state();
- yy_push_state(u8);
- yy_push_state(u8);
- return POLYPHONIC_AFTERTOUCH;
-}
-<event>{CONTROLMODE_CHANGE} {
- LOGOUT(DEBUG_ver) << "lex: controlmode change" << endl;
-// yylval.byte = *(Byte*)YYText();
- yylval.i = *(Byte*)YYText();
- running_status_i_ = yylval.i;
- yy_pop_state();
- yy_push_state(u8);
- yy_push_state(u8);
- return CONTROLMODE_CHANGE;
-}
-<event>{PROGRAM_CHANGE} {
- LOGOUT(DEBUG_ver) << "lex: program change" << endl;
-// yylval.byte = *(Byte*)YYText();
- yylval.i = *(Byte*)YYText();
- running_status_i_ = yylval.i;
- yy_pop_state();
- yy_push_state(u8);
- return PROGRAM_CHANGE;
-}
-<event>{CHANNEL_AFTERTOUCH} {
- LOGOUT(DEBUG_ver) << "lex: channel aftertouch" << endl;
-// yylval.byte = *(Byte*)YYText();
- yylval.i = *(Byte*)YYText();
- running_status_i_ = yylval.i;
- yy_pop_state();
- yy_push_state(u8);
- yy_push_state(u8);
- return CHANNEL_AFTERTOUCH;
-}
-<event>{PITCHWHEEL_RANGE} {
- LOGOUT(DEBUG_ver) << "lex: pitchwheel range" << endl;
-// yylval.byte = *(Byte*)YYText();
- yylval.i = *(Byte*)YYText();
- running_status_i_ = yylval.i;
- yy_pop_state();
- yy_push_state(u8);
- yy_push_state(u8);
- return PITCHWHEEL_RANGE;
-}
-<event>{SYSEX_EVENT1} { // len data
- LOGOUT(DEBUG_ver) << "lex: sysex1" << endl;
- yy_pop_state();
- yy_push_state(data);
- return SYSEX_EVENT1;
-}
-<event>{SYSEX_EVENT2} { // len data
- LOGOUT(DEBUG_ver) << "lex: sysex2" << endl;
- yy_pop_state();
-// yy_push_state(u8); //?
- yy_push_state(data);
- return SYSEX_EVENT2;
-}
-<event>{META_EVENT} {
- LOGOUT(DEBUG_ver) << "lex: meta" << endl;
- yy_push_state(meta_event);
- return META_EVENT;
-}
-<event>{U8} {
- error(String("event: illegal byte: ")
- + String_convert::bin2hex_str(String(*YYText())));
- exit(1);
-}
-<meta_event>{SEQUENCE} { // ssss sequence number
- LOGOUT(DEBUG_ver) << "lex: sequence" << endl;
- yy_pop_state();
- yy_pop_state();
- yy_push_state(int16);
- return SEQUENCE;
-}
-<meta_event>{YYTEXT} { // len data
- LOGOUT(DEBUG_ver) << "lex: text" << endl;
-// yylval.byte = *(Byte*)YYText();
- yylval.i = *(Byte*)YYText();
- yy_pop_state();
- yy_pop_state();
- yy_push_state(data);
- return YYTEXT;
-}
-<meta_event>{YYCOPYRIGHT} {
- LOGOUT(DEBUG_ver) << "lex: copyright" << endl;
-// yylval.byte = *(Byte*)YYText();
- yylval.i = *(Byte*)YYText();
- yy_pop_state();
- yy_pop_state();
- yy_push_state(data);
- return YYCOPYRIGHT;
-}
-<meta_event>{YYTRACK_NAME} {
- LOGOUT(DEBUG_ver) << "lex: track name" << endl;
-// yylval.byte = *(Byte*)YYText();
- yylval.i = *(Byte*)YYText();
- yy_pop_state();
- yy_pop_state();
- yy_push_state(data);
- return YYTRACK_NAME;
-}
-<meta_event>{YYINSTRUMENT_NAME} {
- LOGOUT(DEBUG_ver) << "lex: instrument name" << endl;
-// yylval.byte = *(Byte*)YYText();
- yylval.i = *(Byte*)YYText();
- yy_pop_state();
- yy_pop_state();
- yy_push_state(data);
- return YYINSTRUMENT_NAME;
-}
-<meta_event>{YYLYRIC} {
- LOGOUT(DEBUG_ver) << "lex: lyric" << endl;
-// yylval.byte = *(Byte*)YYText();
- yylval.i = *(Byte*)YYText();
- yy_pop_state();
- yy_pop_state();
- yy_push_state(data);
- return YYLYRIC;
-}
-<meta_event>{YYMARKER} {
- LOGOUT(DEBUG_ver) << "lex: marker" << endl;
-// yylval.byte = *(Byte*)YYText();
- yylval.i = *(Byte*)YYText();
- yy_pop_state();
- yy_pop_state();
- yy_push_state(data);
- return YYMARKER;
-}
-<meta_event>{YYCUE_POINT} {
- LOGOUT(DEBUG_ver) << "lex: cue point" << endl;
-// yylval.byte = *(Byte*)YYText();
- yylval.i = *(Byte*)YYText();
- yy_pop_state();
- yy_pop_state();
- yy_push_state(data);
- return YYCUE_POINT;
-}
-<meta_event>{TEMPO} { // tttttt usec
- LOGOUT(DEBUG_ver) << "lex: tempo" << endl;
- yy_pop_state();
- yy_pop_state();
- yy_push_state(u8);
- yy_push_state(u8);
- yy_push_state(u8);
- return TEMPO;
-}
-<meta_event>{SMPTE_OFFSET} { // hr mn se fr ff
- LOGOUT(DEBUG_ver) << "lex: smpte offset" << endl;
- yy_pop_state();
- yy_pop_state();
- yy_push_state(u8);
- yy_push_state(u8);
- yy_push_state(u8);
- yy_push_state(u8);
- yy_push_state(u8);
- return SMPTE_OFFSET;
-}
-<meta_event>{TIME} { // nn dd cc bb
- LOGOUT(DEBUG_ver) << "lex: time" << endl;
- yy_pop_state();
- yy_pop_state();
- yy_push_state(u8);
- yy_push_state(u8);
- yy_push_state(u8);
- yy_push_state(u8);
- return TIME;
-}
-<meta_event>{KEY} { // sf mi
- LOGOUT(DEBUG_ver) << "lex: key" << endl;
- yy_pop_state();
- yy_pop_state();
- yy_push_state(i8);
- yy_push_state(i8);
- return KEY;
-}
-<meta_event>{SSME} { // len data
- LOGOUT(DEBUG_ver) << "lex: smme" << endl;
- yy_pop_state();
- yy_pop_state();
- yy_push_state(data);
- return SSME;
-}
-<meta_event>{END_OF_TRACK} {
- LOGOUT(DEBUG_ver) << "lex: end of track" << endl;
- yy_pop_state();
- yy_pop_state();
- yy_pop_state();
- return END_OF_TRACK;
-}
-<meta_event>{U8} {
- warning(String("meta_event: unimplemented event: ")
- + String_convert::bin2hex_str(String(*YYText()))
-// huh?
-// ,this->here_ch_C()
- );
- yy_pop_state();
- yy_pop_state();
- yy_push_state(u8);
- yy_push_state(u8);
- return U8;
-}
-
-<data>{VARINT} {
- LOGOUT(DEBUG_ver) << "lex: data" << endl;
- String str((Byte const*)YYText(), YYLeng());
- int i = My_midi_lexer::varint2_i(str);
- String* str_p = new String;
- while (i--)
- *str_p += (char)yyinput();
- yylval.str_p = str_p;
- yy_pop_state();
- return DATA;
-}
-<data>{U8} {
- error(String("data: illegal byte: ")
- + String_convert::bin2hex_str(String(*YYText())));
- exit(1);
-}
-<data>{BACKUP_VARINT_0}{U8} {
- error(String("data: varint expected: ")
- + String_convert::bin2hex_str(String(*(YYText()))));
- exit(1);
-}
-<data>{BACKUP_VARINT_1}{U8} {
- error(String("data: varint expected: ")
- + String_convert::bin2hex_str(String(*(YYText()))));
- exit(1);
-}
-<data>{BACKUP_VARINT_2}{U8} {
- error(String("data: varint expected: ")
- + String_convert::bin2hex_str(String(*(YYText()))));
- exit(1);
-}
-
-<<EOF>> {
-// LOGOUT(NORMAL_ver) << "<<EOF>>";
-
- if (!close_i())
- yyterminate(); // can't move this, since it actually rets a YY_NULL
-}
-
-%%
-
projects / lilypond.git / blobdiff