/*
- context.cc -- implement Context
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 2004--2014 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 2004--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ LilyPond is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ LilyPond is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
*/
#include "context.hh"
bool
Context::is_removable () const
{
- return context_list_ == SCM_EOL && ! iterator_count_
- && !dynamic_cast<Global_context const *> (daddy_context_);
+ return context_list_ == SCM_EOL && ! client_count_
+ && !dynamic_cast<Global_context const *> (daddy_context_);
}
void
ctx->check_removal ();
if (ctx->is_removable ())
- {
- recurse_over_translators (ctx, &Translator::finalize,
- &Translator_group::finalize,
- UP);
- send_stream_event (ctx, "RemoveContext", 0, 0);
- }
+ {
+ recurse_over_translators (ctx, &Translator::finalize,
+ &Translator_group::finalize,
+ UP);
+ send_stream_event (ctx, "RemoveContext", 0, 0);
+ }
}
}
-Context::Context (Context const &src)
- : key_manager_ (src.key_manager_)
+Context::Context (Context const & /* src */)
{
assert (false);
}
Context::add_context (Context *child)
{
context_list_ = ly_append2 (context_list_,
- scm_cons (child->self_scm (), SCM_EOL));
+ scm_cons (child->self_scm (), SCM_EOL));
child->daddy_context_ = this;
this->events_below_->register_as_listener (child->events_below_);
}
-
-Context::Context (Object_key const *key)
- : key_manager_ (key)
+Context::Context ()
{
daddy_context_ = 0;
aliases_ = SCM_EOL;
- iterator_count_ = 0;
+ client_count_ = 0;
implementation_ = 0;
properties_scm_ = SCM_EOL;
accepts_list_ = SCM_EOL;
+ default_child_ = SCM_EOL;
context_list_ = SCM_EOL;
definition_ = SCM_EOL;
definition_mods_ = SCM_EOL;
event_source_->unprotect ();
events_below_ = new Dispatcher ();
events_below_->unprotect ();
-
- /*
- UGH UGH
- const correctness.
- */
- key_manager_.unprotect();
}
/* TODO: this shares code with find_create_context (). */
Context *
-Context::create_unique_context (SCM name, string id, SCM operations)
+Context::create_unique_context (SCM name, const string &id, SCM operations)
{
/*
Don't create multiple score contexts.
if (gthis && gthis->get_score_context ())
return gthis->get_score_context ()->create_unique_context (name, id, operations);
- /*
- TODO: use accepts_list_.
- */
- vector<Context_def*> path
- = unsmob_context_def (definition_)->path_to_acceptable_context (name, get_output_def ());
-
+ vector<Context_def *> path = path_to_acceptable_context (name);
if (path.size ())
{
Context *current = this;
- // start at 1. The first one (index 0) will be us.
+ // Iterate through the path and create all of the implicit contexts.
for (vsize i = 0; i < path.size (); i++)
- {
- SCM ops = SCM_EOL;
- string id_str = "\\new";
- if (i == path.size () - 1)
- {
- ops = operations;
- id_str = id;
- }
- current = current->create_context (path[i],
- id_str,
- ops);
- }
+ {
+ SCM ops = SCM_EOL;
+ string id_str = "\\new";
+ if (i == path.size () - 1)
+ {
+ ops = operations;
+ id_str = id;
+ }
+ current = current->create_context (path[i],
+ id_str,
+ ops);
+ }
return current;
}
ret = daddy_context_->create_unique_context (name, id, operations);
else
{
- warning (_f ("can't find or create new `%s'",
- ly_symbol2string (name).c_str ()));
+ warning (_f ("cannot find or create new `%s'",
+ ly_symbol2string (name).c_str ()));
ret = 0;
}
return ret;
}
Context *
-Context::find_create_context (SCM n, string id, SCM operations)
+Context::find_create_context (SCM n, const string &id, SCM operations)
{
/*
Don't create multiple score contexts.
*/
Global_context *gthis = dynamic_cast<Global_context *> (this);
- if (gthis && gthis->get_score_context ())
- return gthis->get_score_context ()->find_create_context (n, id, operations);
+ if (gthis)
+ {
+ if (gthis->get_score_context ())
+ return gthis->get_score_context ()->find_create_context (n, id, operations);
+
+ // Special case: If we use \set Timing.xxx = whatever before
+ // Score is established, the alias of Score to Timing will not
+ // be taken into account. We check for this particular case
+ // here. Aliases apart from Score-level ones don't warrant
+ // context creation as they could create unwanted contexts, like
+ // RhythmicVoice instead of Voice. Creating a Score context,
+ // however, can't really do anything wrong.
+
+ SCM score_name = default_child_context_name ();
+ SCM score_def = find_context_def (get_output_def (), score_name);
+
+ if (Context_def *cd = unsmob_context_def (score_def))
+ {
+ if (cd->is_alias (n))
+ return create_context (cd, id, operations);
+ }
+ }
+
if (Context *existing = find_context_below (this, n, id))
return existing;
if (n == ly_symbol2scm ("Bottom"))
{
- Context *tg = get_default_interpreter ();
+ Context *tg = get_default_interpreter (id);
return tg;
}
- /*
- TODO: use accepts_list_.
- */
- vector<Context_def*> path
- = unsmob_context_def (definition_)->path_to_acceptable_context (n, get_output_def ());
+ vector<Context_def *> path = path_to_acceptable_context (n);
if (path.size ())
{
// start at 1. The first one (index 0) will be us.
for (vsize i = 0; i < path.size (); i++)
- {
- SCM ops = (i == path.size () -1) ? operations : SCM_EOL;
+ {
+ SCM ops = (i == path.size () - 1) ? operations : SCM_EOL;
- string this_id = "";
- if (i == path.size () -1)
- this_id = id;
+ string this_id = "";
+ if (i == path.size () - 1)
+ this_id = id;
- current = current->create_context (path[i],
- this_id,
- ops);
- }
+ current = current->create_context (path[i],
+ this_id,
+ ops);
+ }
return current;
}
ret = daddy_context_->find_create_context (n, id, operations);
else
{
- warning (_f ("can't find or create `%s' called `%s'",
- ly_symbol2string (n).c_str (), id));
+ warning (_f ("cannot find or create `%s' called `%s'",
+ ly_symbol2string (n).c_str (), id));
ret = 0;
}
return ret;
Context::set_property_from_event (SCM sev)
{
Stream_event *ev = unsmob_stream_event (sev);
-
+
SCM sym = ev->get_property ("symbol");
if (scm_is_symbol (sym))
{
SCM val = ev->get_property ("value");
+
+ if (SCM_UNBNDP (val)) {
+ unset_property (sym);
+ return;
+ }
+
bool ok = true;
- if (val != SCM_EOL)
- ok = type_check_assignment (sym, val, ly_symbol2scm ("translation-type?"));
+ ok = type_check_assignment (sym, val, ly_symbol2scm ("translation-type?"));
+
if (ok)
- set_property (sym, val);
+ set_property (sym, val);
}
}
Context::unset_property_from_event (SCM sev)
{
Stream_event *ev = unsmob_stream_event (sev);
-
+
SCM sym = ev->get_property ("symbol");
type_check_assignment (sym, SCM_EOL, ly_symbol2scm ("translation-type?"));
unset_property (sym);
Context::create_context_from_event (SCM sev)
{
Stream_event *ev = unsmob_stream_event (sev);
-
+
string id = ly_scm2string (ev->get_property ("id"));
SCM ops = ev->get_property ("ops");
SCM type_scm = ev->get_property ("type");
string type = ly_symbol2string (type_scm);
- Object_key const *key = key_manager_.get_context_key (now_mom(), type, id);
-
- vector<Context_def*> path
- = unsmob_context_def (definition_)->path_to_acceptable_context (type_scm, get_output_def ());
+
+ vector<Context_def *> path = path_to_acceptable_context (type_scm);
+
if (path.size () != 1)
{
- programming_error (_f ("Invalid CreateContext event: Cannot create %s context", type.c_str ()));
+ programming_error (to_string ("Invalid CreateContext event: Cannot create %s context", type.c_str ()));
return;
}
Context_def *cdef = path[0];
-
- Context *new_context = cdef->instantiate (ops, key);
+
+ Context *new_context = cdef->instantiate (ops);
new_context->id_string_ = id;
-
+
/* Register various listeners:
- Make the new context hear events that universally affect contexts
- connect events_below etc. properly */
/* We want to be the first ones to hear our own events. Therefore, wait
before registering events_below_ */
new_context->event_source ()->
- add_listener (GET_LISTENER (new_context->create_context_from_event),
- ly_symbol2scm ("CreateContext"));
+ add_listener (GET_LISTENER (new_context->create_context_from_event),
+ ly_symbol2scm ("CreateContext"));
new_context->event_source ()->
- add_listener (GET_LISTENER (new_context->remove_context),
- ly_symbol2scm ("RemoveContext"));
+ add_listener (GET_LISTENER (new_context->remove_context),
+ ly_symbol2scm ("RemoveContext"));
new_context->event_source ()->
- add_listener (GET_LISTENER (new_context->change_parent),
- ly_symbol2scm ("ChangeParent"));
+ add_listener (GET_LISTENER (new_context->change_parent),
+ ly_symbol2scm ("ChangeParent"));
new_context->event_source ()->
- add_listener (GET_LISTENER (new_context->set_property_from_event),
- ly_symbol2scm ("SetProperty"));
+ add_listener (GET_LISTENER (new_context->set_property_from_event),
+ ly_symbol2scm ("SetProperty"));
new_context->event_source ()->
- add_listener (GET_LISTENER (new_context->unset_property_from_event),
- ly_symbol2scm ("UnsetProperty"));
+ add_listener (GET_LISTENER (new_context->unset_property_from_event),
+ ly_symbol2scm ("UnsetProperty"));
new_context->events_below_->register_as_listener (new_context->event_source_);
this->add_context (new_context);
apply_property_operations (new_context, ops);
send_stream_event (this, "AnnounceNewContext", 0,
- ly_symbol2scm ("context"), new_context->self_scm (),
- ly_symbol2scm ("creator"), sev);
+ ly_symbol2scm ("context"), new_context->self_scm (),
+ ly_symbol2scm ("creator"), sev);
+}
+
+vector<Context_def *>
+Context::path_to_acceptable_context (SCM name) const
+{
+ // The 'accepts elements in definition_mods_ is a list of ('accepts string),
+ // but the Context_def expects to see elements of the form ('accepts symbol).
+ SCM accepts = SCM_EOL;
+ for (SCM s = definition_mods_; scm_is_pair (s); s = scm_cdr (s))
+ if (scm_caar (s) == ly_symbol2scm ("accepts"))
+ {
+ SCM elt = scm_list_2 (scm_caar (s), scm_string_to_symbol (scm_cadar (s)));
+ accepts = scm_cons (elt, accepts);
+ }
+
+ return unsmob_context_def (definition_)->path_to_acceptable_context (name,
+ get_output_def (),
+ scm_reverse_x (accepts, SCM_EOL));
+
}
Context *
Context::create_context (Context_def *cdef,
- string id,
- SCM ops)
+ const string &id,
+ SCM ops)
{
infant_event_ = 0;
/* TODO: This is fairly misplaced. We can fix this when we have taken out all
iterator specific stuff from the Context class */
event_source_->
- add_listener (GET_LISTENER (acknowledge_infant),
- ly_symbol2scm ("AnnounceNewContext"));
+ add_listener (GET_LISTENER (acknowledge_infant),
+ ly_symbol2scm ("AnnounceNewContext"));
/* The CreateContext creates a new context, and sends an announcement of the
new context through another event. That event will be stored in
infant_event_ to create a return value. */
send_stream_event (this, "CreateContext", 0,
ly_symbol2scm ("ops"), ops,
ly_symbol2scm ("type"), cdef->get_context_name (),
- ly_symbol2scm ("id"), scm_makfrom0str (id.c_str ()));
+ ly_symbol2scm ("id"), ly_string2scm (id));
event_source_->
- remove_listener (GET_LISTENER (acknowledge_infant),
- ly_symbol2scm ("AnnounceNewContext"));
+ remove_listener (GET_LISTENER (acknowledge_infant),
+ ly_symbol2scm ("AnnounceNewContext"));
assert (infant_event_);
SCM infant_scm = infant_event_->get_property ("context");
SCM
Context::default_child_context_name () const
{
- return scm_is_pair (accepts_list_)
- ? scm_car (accepts_list_)
- : SCM_EOL;
+ return default_child_;
}
bool
}
Context *
-Context::get_default_interpreter ()
+Context::get_default_interpreter (const string &context_id)
{
if (!is_bottom_context ())
{
string name = ly_symbol2string (nm);
Context_def *t = unsmob_context_def (st);
if (!t)
- {
- warning (_f ("can't find or create: `%s'", name.c_str ()));
- t = unsmob_context_def (this->definition_);
- }
-
- Context *tg = create_context (t, "", SCM_EOL);
- return tg->get_default_interpreter ();
+ {
+ warning (_f ("cannot find or create: `%s'", name.c_str ()));
+ t = unsmob_context_def (this->definition_);
+ }
+ if (scm_is_symbol (t->get_default_child (SCM_EOL)))
+ {
+ Context *tg = create_context (t, "\\new", SCM_EOL);
+ return tg->get_default_interpreter (context_id);
+ }
+ return create_context (t, context_id, SCM_EOL);
+ }
+ else if (!context_id.empty () && context_id != id_string ())
+ {
+ if (daddy_context_ && !dynamic_cast<Global_context *> (daddy_context_))
+ return daddy_context_->get_default_interpreter (context_id);
+ warning (_f ("cannot find or create new Bottom = \"%s\"",
+ context_id.c_str ()));
}
return this;
}
void
Context::internal_send_stream_event (SCM type, Input *origin, SCM props[])
{
- Stream_event *e = new Stream_event (type, origin);
+ Stream_event *e = new Stream_event
+ (scm_call_1 (ly_lily_module_constant ("ly:make-event-class"), type),
+ origin);
for (int i = 0; props[i]; i += 2)
{
- e->set_property (props[i], props[i+1]);
+ e->set_property (props[i], props[i + 1]);
}
event_source_->broadcast (e);
e->unprotect ();
bool
Context::is_alias (SCM sym) const
{
- if (sym == ly_symbol2scm ("Bottom")
- && !scm_is_pair (accepts_list_))
- return true;
- if (sym == unsmob_context_def (definition_)->get_context_name ())
+ if (scm_is_eq (sym, ly_symbol2scm ("Bottom")))
+ return is_bottom_context ();
+ if (scm_is_eq (sym, context_name_symbol ()))
return true;
return scm_c_memq (sym, aliases_) != SCM_BOOL_F;
aliases_ = scm_cons (sym, aliases_);
}
+/* we don't (yet) instrument context properties */
void
-#ifndef NDEBUG
-Context::internal_set_property (SCM sym, SCM val, char const *file, int line, char const *fun)
+Context::instrumented_set_property (SCM sym, SCM val, const char *, int, const char *)
{
- if (do_internal_type_checking_global)
- assert (type_check_assignment (sym, val, ly_symbol2scm ("translation-type?")));
-#else
+ internal_set_property (sym, val);
+}
+
+void
Context::internal_set_property (SCM sym, SCM val)
{
-#endif
+ bool type_check_ok = type_check_assignment (sym, val, ly_symbol2scm ("translation-type?"));
- properties_dict ()->set (sym, val);
+ if (do_internal_type_checking_global)
+ assert (type_check_ok);
+
+ if (type_check_ok)
+ properties_dict ()->set (sym, val);
}
/*
Context::remove_context (SCM)
{
/* ugh, the translator group should listen to RemoveContext events by itself */
- implementation ()->disconnect_from_context ();
+ Translator_group *impl = implementation ();
+ if (impl)
+ impl->disconnect_from_context ();
disconnect_from_parent ();
}
*/
Context *
find_context_below (Context *where,
- SCM type, string id)
+ SCM type, const string &id)
{
if (where->is_alias (type))
{
if (id == "" || where->id_string () == id)
- return where;
+ return where;
}
Context *found = 0;
return 1;
}
-Object_key const *
-Context::get_grob_key (string name)
-{
- return key_manager_.get_grob_key (now_mom (), name);
-}
-
-Object_key const *
-Context::get_context_key (string name, string id)
-{
- return key_manager_.get_context_key (now_mom (), name, id);
-}
-
SCM
Context::mark_smob (SCM sm)
{
Context *me = (Context *) SCM_CELL_WORD_1 (sm);
- me->key_manager_.gc_mark();
scm_gc_mark (me->context_list_);
scm_gc_mark (me->aliases_);
scm_gc_mark (me->definition_mods_);
scm_gc_mark (me->properties_scm_);
scm_gc_mark (me->accepts_list_);
+ scm_gc_mark (me->default_child_);
+
if (me->implementation_)
scm_gc_mark (me->implementation_->self_scm ());
- if (me->event_source_) scm_gc_mark (me->event_source_->self_scm ());
- if (me->events_below_) scm_gc_mark (me->events_below_->self_scm ());
+
+ if (me->event_source_)
+ scm_gc_mark (me->event_source_->self_scm ());
+
+ if (me->events_below_)
+ scm_gc_mark (me->events_below_->self_scm ());
return me->properties_scm_;
}
return daddy_context_;
}
-void
-Context::clear_key_disambiguations ()
-{
- if (!use_object_keys)
- return;
-
- key_manager_.clear ();
- for (SCM s = context_list_; scm_is_pair (s); s = scm_cdr (s))
- unsmob_context (scm_car (s))->clear_key_disambiguations ();
-}
-
/*
Ugh. Where to put this?
*/
m = *unsmob_moment (sm);
if (m.main_part_ < Rational (0))
- {
- Rational length (measure_length (context));
- while (m.main_part_ < Rational (0))
- m.main_part_ += length;
- }
+ {
+ Rational length (measure_length (context));
+ while (m.main_part_ < Rational (0))
+ m.main_part_ += length;
+ }
}
return m;
}
+/* Finds the measure position after a note of length DUR that
+ begins at the current measure position. */
+Moment
+measure_position (Context const *context, Duration const *dur)
+{
+ Moment pos = measure_position (context);
+ Rational dur_length = dur ? dur->get_length () : Rational (0);
+
+ Moment end_pos = pos.grace_part_ < Rational (0)
+ ? Moment (pos.main_part_, pos.grace_part_ + dur_length)
+ : Moment (pos.main_part_ + dur_length, 0);
+
+ return end_pos;
+}
+
+int
+measure_number (Context const *context)
+{
+ SCM barnum = context->get_property ("internalBarNumber");
+ SCM smp = context->get_property ("measurePosition");
+
+ int bn = robust_scm2int (barnum, 0);
+ Moment mp = robust_scm2moment (smp, Moment (0));
+ if (mp.main_part_ < Rational (0))
+ bn--;
+
+ return bn;
+}
void
set_context_property_on_children (Context *trans, SCM sym, SCM val)
SCM melisma_properties = tr->get_property ("melismaBusyProperties");
bool busy = false;
- for (; scm_is_pair (melisma_properties);
+ for (; !busy && scm_is_pair (melisma_properties);
melisma_properties = scm_cdr (melisma_properties))
busy = busy || to_boolean (tr->internal_get_property (scm_car (melisma_properties)));
return busy;
}
+
+bool
+check_repeat_count_visibility (Context const *context, SCM count)
+{
+ SCM proc = context->get_property ("repeatCountVisibility");
+ return (ly_is_procedure (proc)
+ && to_boolean (scm_call_2 (proc,
+ count,
+ context->self_scm ())));
+}
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