-Features you cannot find in the doco as working, should be mentioned here.
-
+Features you cannot find in the doco as working, should be mentioned
+here.
This is an assorted collection of stuff that will be done, might be
done, or is an idea that I want to think about
Most of the items are marked in the code as well, with full explanation.
grep for TODO and ugh/ugr/urg
+**************
+I also found a few bugs:
+
+* The examples in input/test/bar-scripts.ly and score-bar-scripts.ly
+ don't work. The problem seems to be that you can't define a
+ a score identifier and then use it in the \score block.
+
+* Instrument names in the margin. Example:
+ input/test/hara-kiri.ly. The text should of course
+ be to the left of the staff lines.
+**************
+
+ * check widths of TFM, something's wrong here.
+
+ * hang Item on Spanner
+
+ * junk Text_def, use G_text_item in stead.
+
+ * remove Interval dim_ from Dimension_cache and rename the struct.
+
+ * do --safe for PS output?
+
+ * staff_margin (with a partial measure.)
+
+ * fix "I've been drinking too much"
+
+ * add scripts to bars eg. |^"bla"
+
+ * fix Staff_margin_engraver.
+
+ * fix pletvisibility properties:
+ - bracket on/off/no-bracket-when-beam
+ - num on/off/no-num-when-beam
+
+ * fix: standchen.
+
+ * junk backlinks?
+
+ * junk text{sharp,flat,etc}
+
+ * fix convert-mudela manpage
+
+ * automatic staff selection.
+
+ * decimal point in \paper {}
+
+ *{ \voiceone <a'4.*2/3 d''4.*2/3 fis''4.*2/3> [g''8 fis'' e''] d''4 |}
+ and=20
+ { \voicetwo d'4 d'2.*2/3 } spacing
+
+ * tied notes for MIDI
+
+ * sharp /flat on trills (in MIDI ??)
+
+ * scm-ify \property values.
+
+ * move class Lookup {} into scm
BUGS:
- * disallow backslashes
+
+ * fix: text on rests: rediculous dims
+
+ * ly2dvi
+ - deps for ly2dvi
+
+ * fix midi output:
+ - default duration? duration must be not entered
+ explicitely on first note.
+
+ * turn slope-damping on/off
+
+ * c4 \! \> c4
+
+ * tremolo stuff
+
+ * gallina barlines.
+
+ * fix height of / collisions with lyrics (chords),
+ see input/test/vertical-text.ly; input/test/repeat.ly
+
+ * latex bla.tex broken (titles / \lilyfooter stuff?)
+
+ * check/set minimum slur/tie length
+
+ * msgfmt -o check?
* \breathmark TeX macro
* space after bars?
- * [/3 c8 c16 c c c]/1
-
+ * 'hinterfleisch' before bar (e.g. wtk1-fugue2)?
+
+ * \type Voice \times 2/3 { [c8 c16 c16 c16 c16] }
+
* fix singleStaffBracket
-
- * repeat bars: need distance after ":|" and before "|:"
- * The time signature warnings still remain, will be fixed later.
+ * repeat bars: need distance after ":|" and before "|:"
Summary of minor spelling irregularities:
- capitalization/use of underscores in property names
- * fix Score.skipBars
-
- * repeat bars: need distance after ":|" and before "|:"
+ * fix SkipBars -> skipBars
* \shape 1st dim skipped?
portato= \script { "portato" 0 -1 0 1 0 }
- * Align_element::padding ?
+STUFF
+ * uniformise recent feta contributions.
- * uniformise property names.
+ * check out legal/(c) matters for scores.
- * ydirection <-> yDirection
+ * check out GCC signatures?
- * typo checks on property names?
+ * Align_element::padding ?
- * make engraver hacking robust.
+ * uniformise property names...
+ - ydirection <-> yDirection
+ - rather allow '_' in identifiers first (i.e. junk ^ and _),
+ and do y_direction?
+ - typo checks on property names?
* use streambufs and iostream
to provide IO handling for TeX stream, mudela stream, data-file.
* zip target for binary windows dist (JBR)
- * text continuations
-
- * revise documentation
-
- * abbrev -> tremolo
-
* junking \skip req in lyrics
* Language:
- junk _ for lyrics.
- abstract grammar.
- * install TeX stuff into tex/generic directory.
-
* percussion note heads
* mi2mu empty staffs.
- * include MIDI list
-
- * midi_instrument -> midiInstrument
-
* horizontal centering of dynamics
* \font\fontA=feta20.afm (.afm?)
* stable make/config stuff
- * stemup/stemdown; see test/updown.fly
- - check examples; add \type Staff hither and thether
-
* $DEPENDENCIES_OUTPUT support
- * use a fake-yodl.sh to mimick yodl when yodl is not installed
+ * fix weird behaviour when .AFMs/.SCMs not found.
- * fix BUGs
-
- * fix weird behaviour when .AFMs not found.
-
- * Xdvi zooming ?!
+ * Xdvi zooming ?! Try to understand GS garbage collection.
gs: Error: /undefined in draw_beam
gs: Operand stack:
- * run texhash after installing .tex
-
* fix vertical alignment and stafflines
* GrandStaff needs more work -- I want a single word
through, so the \property Voice.Instrument would be a stop,
and \property GrandStaff.instrument would be PipeOrgan...)
- * make Tie_req a "command" { <c g> ~ <c g> }
-
- * bib ep1988
-
* revise the Score_priority_align_engraver concept. It sucks.
- * ly2xdvi, ly2ps
-
* make new VoiceOne, VoiceTwo, VoiceThree contexts with
ydirection and hshift preset
- NEWS: ... Musical_pitch (analogous to Duration and Rhythmic_req)
think about, analogous to pitch:
* { a4 a16 } c <-- duration of c?
- * <a4 b8> c <-- duration of c?
+ * < a4 b8 > c <-- duration of c?
* \tempo 4. = 90;
* fix audio-items (don't use (input) requests, but copy data)
- * junk My_lily_parser::abbrev_beam_type_i_
-
* make sure all ex's have a mudela-version
* do rest-collisions for Multi_measure_rests as well.
* add a Duration_convert member to Duration_iter to set parameters.
Junk global duration settings.
-
- * deps for ly2dvi
-
- * clean up abbrev/plet/beam/abbrevbeam/duration mess in parser.
* minimum length second part broken tie
- handle DISALLOW < penalty > FORCE
- discourage breaking of slurs
- * multibar rest
- - symbol(s)
-
* fix variable define/lookup parser global<->paper
* fix title/instrument placements; see input/test/title.ly
* \cadenza , \meter, \grouping should all be \properties
* rename
- - plet -> tuplet
- measure -> bar
+ - abbrev -> tremolo
- abbreviation-beam -> (measured/unmeasured) tremolo
- partial -> anacrouse
* check for groff / troff/ nroff et
* more intelligent file searching
- - make LilyPond RPM fully relocatable
- * nicen examples:
- - break-up heavily-nested score blocks
+ * make LilyPond RPM fully relocatable
* disable spaces in TeX stuff
* integrate midi-elts from mi2mu and lily?
- * cautionary accidental
-
- * score-bar-scripts
- FMR: Free memory read:
- * This is occurring while in:
- Bar_column::do_substitute_dependency(Score_element*,Score_element*) [bar
- -column.cc:29]
- Score_element::unlink() [score-elem.cc:383]
- Paper_score::set_breaking(const Array<Column_x_positions>&) [p-score.cc:
- 150]
- Paper_score::calc_breaking() [p-score.cc:189]
- Paper_score::process() [p-score.cc:203]
- Score::run_translator(Music_output_def*) [score.cc:117]
- * Reading 4 bytes from 0x65d3a0 in the heap.
- * Address 0x65d3a0 is 160 bytes into a freed block at 0x65d300 of 208 bytes.
- * This block was allocated from:
- malloc [rtlib.o]
- __builtin_new [libgcc.a]
- Span_score_bar::clone()const [span-score-bar.hh:20]
- Item::copy_breakable_items() [item.cc:69]
- Item::do_breakable_col_processing() [item.cc:89]
- Score_element::calcalute_dependencies(int,int,void(Score_element::*)()*)
- [score-elem.cc:171]
- * There have been 22 frees since this block was freed from:
- free [rtlib.o]
- __builtin_delete [libgcc.a]
- Span_score_bar::~Span_score_bar() [span-score-bar.hh:18]
- Paper_score::set_breaking(const Array<Column_x_positions>&) [p-score.cc:
- 156]
- Paper_score::calc_breaking() [p-score.cc:189]
- Paper_score::process() [p-score.cc:203]
- Postprocessing elements...
- TeX output to score-bar-scripts.tex...
-
3RD PARTY BUGS:
-
- * redhat (v?) graphical install bomb-out?
+****************
+/*
+ICE
+*/
+signature S {
+ int foo ();
+};
+
+signature V {
+ S * s();
+};
+
+
+V*v();
+f ()
+{
+ return v( )->foo ();
+}
+
+/*
+
+ egcs-1.1
+
+foo.cc: In function `int f()':
+foo.cc:6: label `b' used but not defined
+*/
+void
+f ()
+{
+ bool b;
+ if (b && && b)
+ ;
+}
+***************
+
+ * make GCC warn about ctor that leaves member vars uninitialised.
* GNU diff 2.7: diff -rN does not see a new directory with empty file
- * GNU patch 2.1: <must find simple example> if patch chokes on a
- hunk, or on allegedly unsorted hunks in a diff, it may stop
- without a trace of failure (create .rej file, print error or
- dump core) and just ignore any further diffs.
-
* glibc 2.0:
f = fopen ("/dev/null", "r")
3RD PARTY PROJECTS:
- * GNU indent: handle C++
-
* GNU patch
- 'double-fix' mode: ignore identical fix, rather than suggest
to revert patch direction when (more or less? exactly) the same
.. ?
* chords
- - guitar chords
- - chord names
+ - guitar chords (fret diagrams)
+ - other chord name styles (american(?) style)
- basso continuo
- - Syntax/parser
- MIDI output?
- - typesetting
* Debug logs:
- derive lily_stream, Dstream, texstream from ostream?
* add to MIDI output:
- tempo change
- ornaments (and trills?)
- - repeat
+ - repeat/volta
- slurs
- accents
- dynamics
- quiet/ignore-version options
- logfile output
- * piano staff
-
* elaborate Staff_side baseclass:
- scripts
- text
- PS lines to .eps files
- write custom prolog
-
* Output an output format independent (ofi) typeset file; and
make ofi2 TeX, MusiXTex, Display PostScript, PostScript,
Ascii... interpreters. (difficult)
- use plet grouping
- separate visual from rhythmic info even more
- beams over bars
- - endbeam req should be *after* the duration, so you can do
- < { [c4] }
- { c8. c16 } >
-
* lines:
- Ledger lines, should be separate item: Ledger_lines, Ledger_lines
* Keys:
- merge key{item} & localkey{item}?
- - Major/Minor
- spacing, national styles?
* Support for TAB
- saving them
- specify number of lines
- * markers
-
INPUTLANGUAGE
* c4 4 4 4 for c4 c4 c4 c4?
* relative mode for pitch entering
- * bracket: volta 1,2
-
* configure pitch_byte
* rest name configurable
* handle EOF graciously in error messages.
- * centered whole rest
-
* declare notenametab?
* midi esp.: use I32 iso int where 32 bits are needed (or assumed...)
- * Flower types:
- - A decent scalar type
- - String hash
- - Pointer hash
-
- * binsearch/hash for identifiers
-
* stafftypes: voice names/ instrument names.
* lily \tempo
* revise calcideal
- * volta
-
IDEAS
-
* Output data structures of Mudela in XML/SGML.
* create libmudela, or liblily_frontend
* move MIDI stuff (including Quantization) to a ANSI C libmidi library.
- * use an embedded language: Python, Scheme
- for:
- - Score_elems
- - Translators
-
- * y -dims in internote? Staff-space? X-dimensions?
-
* Spacing_request for manually adjusting spacing
* caching breakpoints
- * breath marks
-
* used fixedpoint arithmetic for min. energy.
* move towards incremental algorithms.
* Klavarskribo?
- * lyrics in chords still fuck up.
-
- * Use hooks/dependency graphs for properties
-
+ * dynamic loading of engravers?
+
+SMOBS:
+
+****************************************
+Han-Wen Nienhuys <hanwen@cs.uu.nl> writes:
+
+> mcmanus@IDT.NET writes:
+> > > I want different C++ objects (with scheme embedded) to be linked by
+> > > C++ pointers. I want to access these other objects from the Scheme
+> > > code, and I want access to these pointers from C++.
+> >
+> > You can do this with a combination of smob's and primitive functions,
+> > though it may not be be exactly what you wanted. You would have one
+> > smob for each class in your application, and then you would write a
+> > primitive function that would return the objects that are linked to a
+> > base object.
+>
+> And the smob and the C++ class are interlinked? Like
+>
+> class Foo_class {
+> Foo_smob *smob_ptr_;
+> }
+>
+> struct Foo_smob {
+> Foo_class *class_ptr_
+> }
+
+Usually you can get away without having this interlinked structure.
+One piece of information you need when exporting objects to scheme is
+the smob tag for your class. You might store this value (a long) into
+a class static variable, or a file static variable. I'll use a class
+static variable in this example.
+
+I typically use code that works like this (untested code ahead):
+
+class Foo_class {
+ static long *Foo_smob_tag;
+ SCM obj; // representation as a scheme object, description comes later
+}
+
+// call this once on startup
+void init_Foo_class {
+ static scm_smobfuns type_rec;
+
+ type_rec.mark = foo_mark;
+ type_rec.free = foo_free;
+ type_rec.print = foo_display;
+ type_rec.equalp = 0;
+ Foo_class::Foo_smob_tag = new int(scm_new_smob(type_rec));
+}
+
+When you want to export an object to scheme, you put a pointer to the
+object itself in the cdr of the cell, and the tag in the car of the
+cell. The code looks like this:
+
+// Is this a Foo?
+static int
+foo_p(SCM obj)
+{
+ return(SCM_NIMP(obj) && SCM_CAR(obj) == Foo_class::Foo_smob_tag);
+}
+
+// given a Scheme representation, return, a C++ representation
+static Foo_class *
+foo_unbox(SCM obj)
+{
+ return((Foo_class*)SCM_CDR(obj));
+}
+
+// the SCM representation of the object is stored inside itself
+// this will become useful when destructor gets called
+static SCM
+foo_box(Foo_class *foo)
+{
+ SCM_DEFER_INTS;
+ SCM_NEWCELL(foo->obj);
+ SCM_SETCAR(foo->obj, Foo_class::Foo_smob_tag);
+ SCM_SETCDR(foo->obj, (SCM)foo);
+ SCM_ALLOW_INTS;
+ return foo->obj;
+}
+
+> C++ determines life time, so what is the strategy?
+
+What happens now when the destructor gets called? Lets set the cdr to
+NULL, and then check for that in all of the primitive functions that
+use your smob. We'll call this notion 'live'; a scheme object is
+'live' if the C++ representation still exists, it's dead if the C++
+object is gone. You can still have references to dead objects in
+scheme code; it's just an error to use them. This idea is stolen from
+Emacs's handling of buffers ('buffer-live-p' and friends).
+
+Add another function, foo_live_p:
+
+static int
+foo_live_p(SCM obj)
+{
+ return(foo_p(obj) && SCM_CDR(obj) != NULL);
+}
+
+In you destructor, you need to do:
+
+~Foo_class()
+{
+ SCM_CDR(this->obj, NULL);
+}
+
+When writing new primitives, now just check foo_live_p().
+
+I hope the above helps,
+
+-russ
+
+
+--
+"Even if you are on the right track, you'll get run over
+if you just sit there."
+ --Will Rogers (1879-1935)
+
+***************************
projects / lilypond.git / blobdiff