X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fcontext-def.cc;h=37690fd61a096d7c8a21f7fe777924b36393d431;hb=5b4b0d6e9a197e8f9eb085b7c2ad78b8be3e5cfc;hp=8ae1f52b38fe8448747cea57d7d048e7fb678dd8;hpb=0eb7d103fae1508384b1918069f9b6ef16fe5837;p=lilypond.git diff --git a/lily/context-def.cc b/lily/context-def.cc index 8ae1f52b38..37690fd61a 100644 --- a/lily/context-def.cc +++ b/lily/context-def.cc @@ -1,9 +1,9 @@ /* - 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 + (c) 2000--2008 Han-Wen Nienhuys */ /* TODO: should junk this class an replace by @@ -11,16 +11,12 @@ #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" -#include "engraver-group.hh" -#include "performer-group.hh" - Context_def::Context_def () { context_aliases_ = SCM_EOL; @@ -31,14 +27,21 @@ 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; @@ -48,10 +51,11 @@ Context_def::Context_def (Context_def const &s) 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_; @@ -83,6 +87,8 @@ Context_def::print_smob (SCM smob, SCM port, scm_print_state*) 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_); @@ -92,6 +98,7 @@ Context_def::mark_smob (SCM smob) 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_; } @@ -121,15 +128,14 @@ Context_def::add_context_mod (SCM mod) { 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) @@ -144,12 +150,6 @@ Context_def::add_context_mod (SCM mod) 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 { @@ -193,45 +193,78 @@ Context_def::get_default_child (SCM user_mod) const return name; } -Link_array -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::path_to_acceptable_context (SCM type_sym, + Output_def *odef, + SCM additional_accepts) const +{ + set 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::internal_path_to_acceptable_context (SCM type_sym, + Output_def *odef, + SCM additional_accepts, + set *seen) const { assert (scm_is_symbol (type_sym)); - SCM accepted = get_accepted (SCM_EOL); + SCM accepted = get_accepted (additional_accepts); - Link_array accepteds; + vector 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 best_result; - for (int i = 0; i < accepteds.size (); i++) + vector 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 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 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; } @@ -260,107 +293,19 @@ Context_def::get_translator_names (SCM user_mod) const 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 (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 (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 (g)) - g->simple_trans_list_ = filter_performers (g->simple_trans_list_); - else if (dynamic_cast (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 () {