X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Finclude%2Fcontext.hh;h=648a52ae3b7f089a2f9d6248ca1c1507f7660464;hb=f29496200848f78721deacd908ff4bb3262e55d6;hp=aadc76bc67a79d3b45abfac72c82b5b2e28ba797;hpb=b1323f33e9aa4b9eea05eefb8755c907d4d762d4;p=lilypond.git diff --git a/lily/include/context.hh b/lily/include/context.hh index aadc76bc67..648a52ae3b 100644 --- a/lily/include/context.hh +++ b/lily/include/context.hh @@ -1,85 +1,154 @@ -/* - context.hh -- declare Context +/* + context.hh -- declare Context - source file of the GNU LilyPond music typesetter + source file of the GNU LilyPond music typesetter - (c) 2004 Han-Wen Nienhuys - */ + (c) 2004--2007 Han-Wen Nienhuys +*/ #ifndef CONTEXT_HH #define CONTEXT_HH +#include "listener.hh" #include "moment.hh" +#include "std-vector.hh" +#include "virtual-methods.hh" +#include "scm-hash.hh" #include "lily-proto.hh" - class Context { Scheme_hash_table *properties_dict () const; Context (Context const &src); - - DECLARE_SMOBS (Context, dummy); + DECLARE_SMOBS (Context); + DECLARE_CLASSNAME(Context); void terminate (); -public: + +private: + friend class Context_handle; + int iterator_count_; + + /* Used internally by create_context */ + Stream_event *infant_event_; + +protected: + Context *daddy_context_; + /* The used Context_def */ SCM definition_; + /* Additions to the Context_def, given by \with */ + SCM definition_mods_; + SCM properties_scm_; SCM context_list_; SCM accepts_list_; - Context * daddy_context_; + SCM aliases_; + Translator_group *implementation_; + string id_string_; + /* Events reported in the context is sent to this dispatcher. */ + Dispatcher *event_source_; + + /* Events reported to this context or recursively in any of its + children, are sent to this dispatcher. */ + Dispatcher *events_below_; + + // Translator_group is allowed to set implementation_. + friend class Translator_group; + // Context_def::instantiate initialises some protected members. + friend class Context_def; + // UGH! initialises implementation_ + friend SCM ly_make_global_translator (SCM); + + DECLARE_LISTENER (set_property_from_event); + DECLARE_LISTENER (unset_property_from_event); + +public: + string id_string () const { return id_string_; } + SCM children_contexts () const { return context_list_; } + SCM default_child_context_name () const; + + Dispatcher *event_source () const { return event_source_; } + Dispatcher *events_below () const { return events_below_; } + void internal_send_stream_event (SCM type, Input *origin, SCM props[]); + + SCM get_definition () const { return definition_; } + SCM get_definition_mods () const { return definition_mods_; } + + Translator_group *implementation () const { return implementation_; } + Context *get_parent_context () const; Context (); - void execute_pushpop_property (SCM prop, SCM sym, SCM val); + + /* properties: */ SCM internal_get_property (SCM name_sym) const; + SCM properties_as_alist () const; + Context *where_defined (SCM name_sym, SCM *value) const; + void unset_property (SCM var_sym); - Context *remove_context (Context*trans); + void instrumented_set_property (SCM, SCM, const char*, int, const char*); + void internal_set_property (SCM var_sym, SCM value); + + Context *create_context (Context_def *, string, SCM); + DECLARE_LISTENER (create_context_from_event); + DECLARE_LISTENER (acknowledge_infant); + DECLARE_LISTENER (remove_context); + DECLARE_LISTENER (change_parent); + void disconnect_from_parent (); void check_removal (); + string context_name () const; + SCM context_name_symbol () const; + Global_context *get_global_context () const; - SCM properties_as_alist () const; - void unset_property (SCM var_sym); - void internal_set_property (SCM var_sym, SCM value); + virtual Context *get_score_context () const; + virtual Output_def *get_output_def () const; + virtual Moment now_mom () const; + virtual Context *get_default_interpreter (); - Context *where_defined (SCM name_sym) const; - String context_name () const; - Global_context * get_global_context () const; - - virtual Score_context * get_score_context () const; bool is_alias (SCM) const; + void add_alias (SCM); void add_context (Context *trans); bool is_bottom_context () const; bool is_removable () const; - bool try_music (Music *); - - virtual Music_output_def *get_output_def () const; - virtual Moment now_mom () const; - Context *find_existing_context (SCM context_name, String id); - Context *find_create_context (SCM context_name, - String id, SCM ops); - Link_array path_to_acceptable_context (SCM alias, - Music_output_def*) const; - Context *get_default_interpreter (); - String id_string_; - SCM implementation_; -private: - friend class Interpretation_context_handle; - int iterator_count_; - bool init_; + Context *find_create_context (SCM context_name, + string id, SCM ops); + Context *create_unique_context (SCM context_name, string context_id, + SCM ops); + vector path_to_acceptable_context (SCM alias) const; }; /* - Context arg? - */ - -void apply_property_operations (Context*tg, SCM pre_init_ops); -void execute_pushpop_property (Context * trg, SCM prop, SCM eltprop, SCM val); -SCM updated_grob_properties (Context* tg, SCM sym); -Context * find_context_below (Context * where, - String type, String id); - -Context * unsmob_context (SCM); - -DECLARE_UNSMOB(Context,context); + Context arg? +*/ + +void apply_property_operations (Context *tg, SCM pre_init_ops); +void execute_pushpop_property (Context *trg, SCM prop, SCM eltprop, SCM val); +void execute_general_pushpop_property (Context *context, + SCM context_property, SCM grob_property_path, SCM val); +SCM updated_grob_properties (Context *tg, SCM sym); +Context *find_context_below (Context *where, + SCM type_sym, string id); +bool melisma_busy (Context *); + +Context *get_voice_to_lyrics (Context *lyrics); +Grob *get_current_note_head (Context *voice); +Grob *get_current_rest (Context *voice); +DECLARE_UNSMOB (Context, context); + +Moment measure_position (Context const *context); +Rational measure_length (Context const *context); +void set_context_property_on_children (Context *trans, SCM sym, SCM val); + +/* Shorthand for creating and broadcasting stream events. */ +#define send_stream_event(ctx, type, origin, ...) \ +{ \ + SCM props[] = { __VA_ARGS__, 0 }; \ + ctx->internal_send_stream_event (ly_symbol2scm (type), origin, props); \ +} + +SCM nested_property_alist (SCM alist, SCM prop_path, SCM value); +SCM nested_property_revert_alist (SCM alist, SCM prop_path); +SCM evict_from_alist (SCM, SCM, SCM); #endif /* CONTEXT_HH */