X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fgrob-property.cc;h=32ff49124dff37919c6e21b5b8778874338c188b;hb=e7aa6c445f463844dbaa52d38ea4aac2882b5601;hp=4034eb829725720519f73c5de636bdd73bcee0d0;hpb=6bd5663429e52edd39c546a7f9bbd8e195053cbe;p=lilypond.git diff --git a/lily/grob-property.cc b/lily/grob-property.cc index 4034eb8297..32ff49124d 100644 --- a/lily/grob-property.cc +++ b/lily/grob-property.cc @@ -18,14 +18,15 @@ #include "program-option.hh" #include "profile.hh" #include "simple-closure.hh" +#include "unpure-pure-container.hh" #include "warn.hh" #include "protected-scm.hh" Protected_scm grob_property_callback_stack = SCM_EOL; -#ifndef NDEBUG extern bool debug_property_callbacks; +#ifndef NDEBUG static void print_property_callback_stack () { @@ -33,65 +34,63 @@ print_property_callback_stack () for (SCM s = grob_property_callback_stack; scm_is_pair (s); s = scm_cdr (s)) message (_f ("%d: %s", frame++, ly_scm_write_string (scm_car (s)).c_str ())); } +#endif +static Protected_scm modification_callback = SCM_EOL; +static Protected_scm cache_callback = SCM_EOL; -static SCM modification_callback = SCM_EOL; -static SCM cache_callback = SCM_EOL; +/* +FIXME: this should use ly:set-option interface instead. +*/ LY_DEFINE (ly_set_grob_modification_callback, "ly:set-grob-modification-callback", - 1, 0, 0, (SCM cb), - "Specify a procedure that will be called every time lilypond modifies " - "a grob property. The callback will receive as arguments " - "the grob that is being modified, " - "the name of the C++ file in which the modification was requested, " - "the line number in the C++ file in which the modification was requested, " - "the name of the function in which the modification was requested, " - "the property to be changed and " - "the new value for the property.") + 1, 0, 0, (SCM cb), + "Specify a procedure that will be called every time LilyPond" + " modifies a grob property. The callback will receive as" + " arguments the grob that is being modified, the name of the" + " C++ file in which the modification was requested, the line" + " number in the C++ file in which the modification was requested," + " the name of the function in which the modification was" + " requested, the property to be changed, and the new value for" + " the property.") { - LY_ASSERT_TYPE (ly_is_procedure, cb, 1); - - modification_callback = cb; + modification_callback = (ly_is_procedure (cb)) ? cb : SCM_BOOL_F; return SCM_UNSPECIFIED; } LY_DEFINE (ly_set_property_cache_callback, "ly:set-property-cache-callback", - 1, 0, 0, (SCM cb), - "Specify a procedure that will be called whenever lilypond calculates " - "a callback function and caches the result. The callback will " - "receive as arguments " - "the grob whose property it is, " - "the name of the property, " - "the name of the callback that calculated the property and " - "the new (cached) value of the property.") + 1, 0, 0, (SCM cb), + "Specify a procedure that will be called whenever lilypond" + " calculates a callback function and caches the result. The" + " callback will receive as arguments the grob whose property it" + " is, the name of the property, the name of the callback that" + " calculated the property, and the new (cached) value of the" + " property.") { - LY_ASSERT_TYPE (ly_is_procedure, cb, 1); - - cache_callback = cb; + cache_callback = (ly_is_procedure (cb)) ? cb : SCM_BOOL_F; return SCM_UNSPECIFIED; } -#endif void Grob::instrumented_set_property (SCM sym, SCM v, - char const *file, - int line, - char const *fun) + char const *file, + int line, + char const *fun) { #ifndef NDEBUG if (ly_is_procedure (modification_callback)) scm_apply_0 (modification_callback, - scm_list_n (self_scm (), - scm_from_locale_string (file), - scm_from_int (line), - scm_from_locale_string (fun), - sym, v, SCM_UNDEFINED)); + scm_list_n (self_scm (), + scm_from_locale_string (file), + scm_from_int (line), + scm_from_locale_string (fun), + sym, v, SCM_UNDEFINED)); #else (void) file; (void) line; (void) fun; #endif - + internal_set_property (sym, v); } @@ -99,9 +98,9 @@ SCM Grob::get_property_alist_chain (SCM def) const { return scm_list_n (mutable_property_alist_, - immutable_property_alist_, - def, - SCM_UNDEFINED); + immutable_property_alist_, + def, + SCM_UNDEFINED); } extern void check_interfaces_for_property (Grob const *me, SCM sym); @@ -110,7 +109,7 @@ void Grob::internal_set_property (SCM sym, SCM v) { internal_set_value_on_alist (&mutable_property_alist_, - sym, v); + sym, v); } @@ -124,9 +123,10 @@ Grob::internal_set_value_on_alist (SCM *alist, SCM sym, SCM v) if (do_internal_type_checking_global) { if (!ly_is_procedure (v) - && !is_simple_closure (v) - && v != ly_symbol2scm ("calculation-in-progress")) - type_check_assignment (sym, v, ly_symbol2scm ("backend-type?")); + && !is_simple_closure (v) + && !is_unpure_pure_container (v) + && v != ly_symbol2scm ("calculation-in-progress")) + type_check_assignment (sym, v, ly_symbol2scm ("backend-type?")); check_interfaces_for_property (this, sym); } @@ -141,7 +141,7 @@ Grob::internal_get_property_data (SCM sym) const if (profile_property_accesses) note_property_access (&grob_property_lookup_table, sym); #endif - + SCM handle = scm_sloppy_assq (sym, mutable_property_alist_); if (handle != SCM_BOOL_F) return scm_cdr (handle); @@ -151,12 +151,12 @@ Grob::internal_get_property_data (SCM sym) const if (do_internal_type_checking_global && scm_is_pair (handle)) { SCM val = scm_cdr (handle); - if (!ly_is_procedure (val) && !is_simple_closure (val)) - type_check_assignment (sym, val, ly_symbol2scm ("backend-type?")); + if (!ly_is_procedure (val) && !is_simple_closure (val) && !is_unpure_pure_container (val)) + type_check_assignment (sym, val, ly_symbol2scm ("backend-type?")); check_interfaces_for_property (this, sym); } - + return (handle == SCM_BOOL_F) ? SCM_EOL : scm_cdr (handle); } @@ -168,30 +168,62 @@ Grob::internal_get_property (SCM sym) const #ifndef NDEBUG if (val == ly_symbol2scm ("calculation-in-progress")) { - programming_error (_f ("cyclic dependency: calculation-in-progress encountered for #'%s (%s)", - ly_symbol2string (sym).c_str (), - name ().c_str ())); + programming_error (to_string ("cyclic dependency: calculation-in-progress encountered for #'%s (%s)", + ly_symbol2string (sym).c_str (), + name ().c_str ()));//assert (1==0); if (debug_property_callbacks) - { - message ("backtrace: "); - print_property_callback_stack (); - } + { + message ("backtrace: "); + print_property_callback_stack (); + } } #endif - + + if (is_unpure_pure_container (val)) + val = unpure_pure_container_unpure_part (val); + if (ly_is_procedure (val) || is_simple_closure (val)) { - Grob *me = ((Grob*)this); + Grob *me = ((Grob *)this); val = me->try_callback_on_alist (&me->mutable_property_alist_, sym, val); } - + + return val; +} + +/* Unlike internal_get_property, this function does no caching. Use it, therefore, with caution. */ +SCM +Grob::internal_get_pure_property (SCM sym, int start, int end) const +{ + SCM val = internal_get_property_data (sym); + if (ly_is_procedure (val)) + return call_pure_function (val, scm_list_1 (self_scm ()), start, end); + + if (is_unpure_pure_container (val)) { + // Do cache, if the function ignores 'start' and 'end' + if (is_unchanging_unpure_pure_container (val)) + return internal_get_property (sym); + else + return call_pure_function (val, scm_list_1 (self_scm ()), start, end); + } + + if (is_simple_closure (val)) + return evaluate_with_simple_closure (self_scm (), + simple_closure_expression (val), + true, start, end); return val; } +SCM +Grob::internal_get_maybe_pure_property (SCM sym, bool pure, int start, int end) const +{ + return pure ? internal_get_pure_property (sym, start, end) : internal_get_property (sym); +} + SCM Grob::try_callback_on_alist (SCM *alist, SCM sym, SCM proc) -{ +{ SCM marker = ly_symbol2scm ("calculation-in-progress"); /* need to put a value in SYM to ensure that we don't get a @@ -210,41 +242,36 @@ Grob::try_callback_on_alist (SCM *alist, SCM sym, SCM proc) else if (is_simple_closure (proc)) { value = evaluate_with_simple_closure (self_scm (), - simple_closure_expression (proc), - false, 0, 0); + simple_closure_expression (proc), + false, 0, 0); } - + #ifndef NDEBUG if (debug_property_callbacks) grob_property_callback_stack = scm_cdr (grob_property_callback_stack); #endif - - /* - If the function returns SCM_UNSPECIFIED, we assume the - property has been set with an explicit set_property () - call. - */ + if (value == SCM_UNSPECIFIED) { value = get_property_data (sym); assert (value == SCM_EOL || value == marker); if (value == marker) - *alist = scm_assq_remove_x (*alist, marker); + *alist = scm_assq_remove_x (*alist, sym); } else { #ifndef NDEBUG if (ly_is_procedure (cache_callback)) - scm_apply_0 (cache_callback, - scm_list_n (self_scm (), - sym, - proc, - value, - SCM_UNDEFINED)); + scm_apply_0 (cache_callback, + scm_list_n (self_scm (), + sym, + proc, + value, + SCM_UNDEFINED)); #endif internal_set_value_on_alist (alist, sym, value); } - + return value; } @@ -271,17 +298,18 @@ Grob::internal_get_object (SCM sym) const note_property_access (&grob_property_lookup_table, sym); SCM s = scm_sloppy_assq (sym, object_alist_); - + if (s != SCM_BOOL_F) { SCM val = scm_cdr (s); if (ly_is_procedure (val) - || is_simple_closure (val)) - { - Grob *me = ((Grob*)this); - val = me->try_callback_on_alist (&me->object_alist_, sym, val); - } - + || is_simple_closure (val) + || is_unpure_pure_container (val)) + { + Grob *me = ((Grob *)this); + val = me->try_callback_on_alist (&me->object_alist_, sym, val); + } + return val; } @@ -303,9 +331,35 @@ Grob::internal_has_interface (SCM k) SCM call_pure_function (SCM unpure, SCM args, int start, int end) { - SCM scm_call_pure_function = ly_lily_module_constant ("call-pure-function"); + if (is_unpure_pure_container (unpure)) + { + SCM pure = unpure_pure_container_pure_part (unpure); + + if (is_simple_closure (pure)) + { + SCM expr = simple_closure_expression (pure); + return evaluate_with_simple_closure (scm_car (args), expr, true, start, end); + } + + if (ly_is_procedure (pure)) + return scm_apply_0 (pure, + scm_append (scm_list_2 (scm_list_3 (scm_car (args), + scm_from_int (start), + scm_from_int (end)), + scm_cdr (args)))); + + return pure; + } + + if (is_simple_closure (unpure)) + { + SCM expr = simple_closure_expression (unpure); + return evaluate_with_simple_closure (scm_car (args), expr, true, start, end); + } + + if (!ly_is_procedure (unpure)) + return unpure; - return scm_apply_0 (scm_call_pure_function, - scm_list_4 (unpure, args, scm_from_int (start), scm_from_int (end))); + return SCM_BOOL_F; }