/*
- translator-def.cc -- implement Context_def
+ context-def.cc -- implement Context_def
source file of the GNU LilyPond music typesetter
- (c) 2000--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 2000--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
/* TODO: should junk this class an replace by
#include "context-def.hh"
-#include "engraver.hh"
+#include "context.hh"
+#include "international.hh"
#include "output-def.hh"
-#include "performer.hh"
-#include "score-context.hh"
-#include "translator-group.hh"
+#include "translator.hh"
#include "warn.hh"
Context_def::Context_def ()
context_name_ = SCM_EOL;
default_child_ = SCM_EOL;
description_ = SCM_EOL;
+ input_location_ = SCM_EOL;
smobify_self ();
+ input_location_ = make_input (Input ());
context_name_ = ly_symbol2scm ("");
}
+Input *
+Context_def::origin () const
+{
+ return unsmob_input (input_location_);
+}
+
Context_def::Context_def (Context_def const &s)
- : Input (s)
{
context_aliases_ = SCM_EOL;
translator_group_type_ = SCM_EOL;
context_name_ = SCM_EOL;
description_ = SCM_EOL;
default_child_ = SCM_EOL;
-
+ input_location_ = SCM_EOL;
smobify_self ();
- description_ = s.description_;
+ description_ = s.description_;
+ input_location_ = make_input (*s.origin ());
default_child_ = s.default_child_;
accept_mods_ = s.accept_mods_;
property_ops_ = s.property_ops_;
SCM
Context_def::mark_smob (SCM smob)
{
+ ASSERT_LIVE_IS_ALLOWED ();
+
Context_def *me = (Context_def *) SCM_CELL_WORD_1 (smob);
scm_gc_mark (me->description_);
scm_gc_mark (me->property_ops_);
scm_gc_mark (me->translator_group_type_);
scm_gc_mark (me->default_child_);
+ scm_gc_mark (me->input_location_);
return me->context_name_;
}
sym = scm_string_to_symbol (sym);
if (ly_symbol2scm ("default-child") == tag)
- {
- default_child_ = sym;
- }
+ default_child_ = sym;
else if (ly_symbol2scm ("consists") == tag
|| ly_symbol2scm ("consists-end") == tag
|| ly_symbol2scm ("remove") == tag)
{
if (!get_translator (sym))
error (_f ("program has no such type: `%s'",
- ly_symbol2string (sym).to_str0 ()));
+ ly_symbol2string (sym).c_str ()));
else
translator_mods_ = scm_cons (scm_list_2 (tag, sym), translator_mods_);
}
else if (ly_symbol2scm ("accepts") == tag
|| ly_symbol2scm ("denies") == tag)
accept_mods_ = scm_cons (scm_list_2 (tag, sym), accept_mods_);
- else if (ly_symbol2scm ("poppush") == tag
- || ly_symbol2scm ("pop") == tag
+ else if (ly_symbol2scm ("pop") == tag
|| ly_symbol2scm ("push") == tag
|| ly_symbol2scm ("assign") == tag
|| ly_symbol2scm ("unset") == tag)
programming_error ("unknown context mod tag");
}
-SCM
-Context_def::get_context_name () const
-{
- return context_name_;
-}
-
SCM
Context_def::get_accepted (SCM user_mod) const
{
return name;
}
-Link_array<Context_def>
-Context_def::path_to_acceptable_context (SCM type_sym, Output_def *odef) const
+/*
+ Given a name of a context that we want to create, finds a list of context
+ definitions such that:
+ - the first element in the list defines a context that is a valid child of
+ the context defined by this Context_def
+ - each subsequent element in the list defines a context that is a valid child
+ of the the context defined by the preceding element in the list
+ - the last element in the list defines a context with the given name
+
+ The ADDITIONAL_ACCEPTS parameter is a list of additional contexts that this
+ specific context def (but not any of the child context defs) should accept.
+*/
+vector<Context_def *>
+Context_def::path_to_acceptable_context (SCM type_sym,
+ Output_def *odef,
+ SCM additional_accepts) const
+{
+ set<const Context_def *> seen;
+ return internal_path_to_acceptable_context (type_sym, odef, additional_accepts, &seen);
+}
+
+/*
+The SEEN parameter is a set which keeps track of visited contexts, allowing
+contexts of the same type to be nested.
+*/
+vector<Context_def*>
+Context_def::internal_path_to_acceptable_context (SCM type_sym,
+ Output_def *odef,
+ SCM additional_accepts,
+ set<const Context_def *> *seen) const
{
assert (scm_is_symbol (type_sym));
- SCM accepted = get_accepted (SCM_EOL);
+ SCM accepted = get_accepted (additional_accepts);
- Link_array<Context_def> accepteds;
+ vector<Context_def*> accepteds;
for (SCM s = accepted; scm_is_pair (s); s = scm_cdr (s))
if (Context_def *t = unsmob_context_def (find_context_def (odef,
scm_car (s))))
- accepteds.push (t);
+ accepteds.push_back (t);
- Link_array<Context_def> best_result;
- for (int i = 0; i < accepteds.size (); i++)
+ vector<Context_def*> best_result;
+ for (vsize i = 0; i < accepteds.size (); i++)
{
/* do not check aliases, because \context Staff should not
create RhythmicStaff. */
if (ly_is_equal (accepteds[i]->get_context_name (), type_sym))
{
- best_result.push (accepteds[i]);
+ best_result.push_back (accepteds[i]);
return best_result;
}
}
- int best_depth = INT_MAX;
- for (int i = 0; i < accepteds.size (); i++)
+ seen->insert (this);
+ vsize best_depth = INT_MAX;
+ for (vsize i = 0; i < accepteds.size (); i++)
{
Context_def *g = accepteds[i];
- Link_array<Context_def> result
- = g->path_to_acceptable_context (type_sym, odef);
- if (result.size () && result.size () < best_depth)
+ if (!seen->count (g))
{
- best_depth = result.size ();
- result.insert (g, 0);
- best_result = result;
+ vector<Context_def*> result
+ = g->internal_path_to_acceptable_context (type_sym, odef, SCM_EOL, seen);
+ if (result.size () && result.size () < best_depth)
+ {
+ best_depth = result.size ();
+ result.insert (result.begin (), g);
+ best_result = result;
+ }
}
}
+ seen->erase (this);
return best_result;
}
return l1;
}
-SCM
-filter_performers (SCM ell)
-{
- SCM *tail = ℓ
- for (SCM p = ell; scm_is_pair (p); p = scm_cdr (p))
- {
- if (dynamic_cast<Performer *> (unsmob_translator (scm_car (*tail))))
- *tail = scm_cdr (*tail);
- else
- tail = SCM_CDRLOC (*tail);
- }
- return ell;
-}
-
-SCM
-filter_engravers (SCM ell)
-{
- SCM *tail = ℓ
- for (SCM p = ell; scm_is_pair (p); p = scm_cdr (p))
- {
- if (dynamic_cast<Engraver *> (unsmob_translator (scm_car (*tail))))
- *tail = scm_cdr (*tail);
- else
- tail = SCM_CDRLOC (*tail);
- }
- return ell;
-}
-
Context *
-Context_def::instantiate (SCM ops, Object_key const *key)
+Context_def::instantiate (SCM ops)
{
- Context *context = 0;
-
- if (context_name_ == ly_symbol2scm ("Score"))
- context = new Score_context (key);
- else
- context = new Context (key);
+ Context *context = new Context ();
context->definition_ = self_scm ();
-
- SCM trans_names = get_translator_names (ops);
-
- Translator_group *g = get_translator_group (translator_group_type_);
- SCM trans_list = SCM_EOL;
-
- for (SCM s = trans_names; scm_is_pair (s); s = scm_cdr (s))
- {
- Translator *t = get_translator (scm_car (s));
- if (!t)
- warning (_f ("can't find: `%s'", s));
- else
- {
- Translator *tr = t->clone ();
- SCM str = tr->self_scm ();
-
- if (tr->must_be_last ())
- {
- SCM cons = scm_cons (str, SCM_EOL);
- if (scm_is_pair (trans_list))
- scm_set_cdr_x (scm_last_pair (trans_list), cons);
- else
- trans_list = cons;
- }
- else
- trans_list = scm_cons (str, trans_list);
-
- tr->daddy_context_ = context;
- tr->unprotect ();
- }
- }
-
- /*
- Ugh, todo: should just make a private
- copy of Context_def with the user mods.
- */
-
- g->simple_trans_list_ = trans_list;
-
- context->implementation_ = g;
- if (dynamic_cast<Engraver *> (g))
- g->simple_trans_list_ = filter_performers (g->simple_trans_list_);
- else if (dynamic_cast<Performer *> (g))
- g->simple_trans_list_ = filter_engravers (g->simple_trans_list_);
-
- g->context_ = context;
+ context->definition_mods_ = ops;
context->aliases_ = context_aliases_;
-
- g->unprotect ();
-
context->accepts_list_ = get_accepted (ops);
return context;
}
-SCM
-Context_def::clone_scm () const
-{
- Context_def *t = new Context_def (*this);
- return t->unprotect ();
-}
-
SCM
Context_def::make_scm ()
{
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