+ SCM name = default_child_;
+ for (SCM s = user_mod; scm_is_pair (s); s = scm_cdr (s))
+ {
+ SCM entry = scm_car (s);
+ if (scm_car (entry) == ly_symbol2scm ("default-child"))
+ {
+ name = scm_cadr (entry);
+ break;
+ }
+ }
+
+ return name;
+}
+
+/*
+ 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 (additional_accepts);