X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fcontext-scheme.cc;h=1559d67e0157255698640830bcd2e15ccb46a504;hb=0b544cfb7332615ef809b71b57ab656741311ae1;hp=4d9ecd1826e07bc8eea422376ab30724cc6d08ec;hpb=01fcd601f574b8d351adaf6e3bf4516066bb1d85;p=lilypond.git diff --git a/lily/context-scheme.cc b/lily/context-scheme.cc index 4d9ecd1826..1559d67e01 100644 --- a/lily/context-scheme.cc +++ b/lily/context-scheme.cc @@ -1,63 +1,90 @@ /* - context-scheme.cc -- Context bindings + This file is part of LilyPond, the GNU music typesetter. - source file of the GNU LilyPond music typesetter + Copyright (C) 1998--2014 Jan Nieuwenhuizen + Han-Wen Nienhuys - (c) 1998--2004 Jan Nieuwenhuizen - Han-Wen Nienhuys + LilyPond is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + LilyPond is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with LilyPond. If not, see . */ #include "context.hh" #include "context-def.hh" +#include "dispatcher.hh" + +LY_DEFINE (ly_context_current_moment, + "ly:context-current-moment", + 1, 0, 0, (SCM context), + "Return the current moment of @var{context}.") +{ + Context *tr = unsmob_context (context); + + LY_ASSERT_SMOB (Context, context, 1); + + return tr->now_mom ().smobbed_copy (); +} LY_DEFINE (ly_context_id, "ly:context-id", - 1, 0, 0, (SCM context), - "Return the id string of @var{context}, " - "i.e. for @code{\\context Voice = one .. } " - "return the string @code{one}.") + 1, 0, 0, (SCM context), + "Return the ID string of @var{context}," + " i.e., for @code{\\context Voice = \"one\" @dots{}}" + " return the string @code{one}.") { Context *tr = unsmob_context (context); - SCM_ASSERT_TYPE (tr, context, SCM_ARG1, __FUNCTION__, "Context"); - return scm_makfrom0str (tr->id_string (). to_str0 ()); + LY_ASSERT_SMOB (Context, context, 1); + + return ly_string2scm (tr->id_string ()); } LY_DEFINE (ly_context_name, "ly:context-name", - 1, 0, 0, (SCM context), - "Return the name of @var{context}, " - "i.e. for @code{\\context Voice = one .. } " - "return the symbol @code{Voice}.") + 1, 0, 0, (SCM context), + "Return the name of @var{context}," + " i.e., for @code{\\context Voice = \"one\" @dots{}}" + " return the symbol @code{Voice}.") { + LY_ASSERT_SMOB (Context, context, 1); + Context *tr = unsmob_context (context); - SCM_ASSERT_TYPE (tr, context, SCM_ARG1, __FUNCTION__, "Context"); - return ly_symbol2scm (tr->context_name ().to_str0 ()); + + return ly_symbol2scm (tr->context_name ().c_str ()); } LY_DEFINE (ly_context_grob_definition, "ly:context-grob-definition", - 2, 0, 0, (SCM context, SCM name), - "Return the definition of @var{name} (a symbol) within @var{context} " - "as an alist") + 2, 0, 0, (SCM context, SCM name), + "Return the definition of @var{name} (a symbol) within" + " @var{context} as an alist.") { Context *tr = unsmob_context (context); - SCM_ASSERT_TYPE (tr, context, SCM_ARG1, __FUNCTION__, "Context"); - SCM_ASSERT_TYPE (scm_is_symbol (name), name, SCM_ARG2, __FUNCTION__, "symbol"); - + LY_ASSERT_SMOB (Context, context, 1); + LY_ASSERT_TYPE (ly_is_symbol, name, 2); + return updated_grob_properties (tr, name); } - LY_DEFINE (ly_context_pushpop_property, "ly:context-pushpop-property", - 3, 1, 0, (SCM context, SCM grob, SCM eltprop, SCM val), - "Do a single @code{\\override} or @code{\\revert} operation " - "in @var{context}. The grob definition @code{grob} is extended " - "with @code{eltprop} (if @var{val} is specified) " - "or reverted (if unspecified).") + 3, 1, 0, (SCM context, SCM grob, SCM eltprop, SCM val), + "Do a single @code{\\override} or @code{\\revert} operation" + " in @var{context}. The grob definition @var{grob} is extended" + " with @var{eltprop} (if @var{val} is specified) or reverted" + " (if unspecified).") { Context *tg = unsmob_context (context); - SCM_ASSERT_TYPE (tg, context, SCM_ARG1, __FUNCTION__, "context"); - SCM_ASSERT_TYPE (scm_is_symbol (grob), grob, SCM_ARG2, __FUNCTION__, "symbol"); - SCM_ASSERT_TYPE (scm_is_symbol (eltprop), eltprop, SCM_ARG3, __FUNCTION__, "symbol"); + + LY_ASSERT_SMOB (Context, context, 1); + LY_ASSERT_TYPE (ly_is_symbol, grob, 2); + LY_ASSERT_TYPE (ly_is_symbol, eltprop, 3); execute_pushpop_property (tg, grob, eltprop, val); @@ -65,67 +92,72 @@ LY_DEFINE (ly_context_pushpop_property, "ly:context-pushpop-property", } LY_DEFINE (ly_context_property, "ly:context-property", - 2, 0, 0, (SCM c, SCM name), - "Return the value of @var{name} from context @var{c}") + 2, 1, 0, (SCM context, SCM sym, SCM def), + "Return the value for property @var{sym} in @var{context}." + " If @var{def} is given, and property value is @code{'()}," + " return @var{def}.") { - Context *t = unsmob_context (c); - Context * tr = (t); - SCM_ASSERT_TYPE (tr, c, SCM_ARG1, __FUNCTION__, "Translator group"); - SCM_ASSERT_TYPE (scm_is_symbol (name), name, SCM_ARG2, __FUNCTION__, "symbol"); + LY_ASSERT_SMOB (Context, context, 1); + LY_ASSERT_TYPE (ly_is_symbol, sym, 2); - return tr->internal_get_property (name); + Context *t = unsmob_context (context); + SCM result = t->internal_get_property (sym); + return def != SCM_UNDEFINED && scm_is_null (result) ? def : result; } -LY_DEFINE (ly_context_set_property, "ly:context-set-property!", - 3, 0, 0, (SCM context, SCM name, SCM val), - "Set value of property @var{name} in context @var{context} " - "to @var{val}.") +LY_DEFINE (ly_context_set_property_x, "ly:context-set-property!", + 3, 0, 0, (SCM context, SCM name, SCM val), + "Set value of property @var{name} in context @var{context}" + " to @var{val}.") { + LY_ASSERT_SMOB (Context, context, 1); + LY_ASSERT_TYPE (ly_is_symbol, name, 2); + Context *tr = unsmob_context (context); - SCM_ASSERT_TYPE (tr, context, SCM_ARG1, __FUNCTION__, "Context"); - SCM_ASSERT_TYPE (scm_is_symbol (name), name, SCM_ARG2, __FUNCTION__, "symbol"); - tr->internal_set_property (name, val); + tr->set_property (name, val); return SCM_UNSPECIFIED; } LY_DEFINE (ly_context_property_where_defined, "ly:context-property-where-defined", - 2, 0, 0, (SCM context, SCM name), - "Return the context above @var{context} " - "where @var{name} is defined.") + 2, 0, 0, (SCM context, SCM name), + "Return the context above @var{context}" + " where @var{name} is defined.") { + LY_ASSERT_SMOB (Context, context, 1); + LY_ASSERT_TYPE (ly_is_symbol, name, 2); + Context *tr = unsmob_context (context); - SCM_ASSERT_TYPE (tr, context, SCM_ARG1, __FUNCTION__, "Context"); - SCM_ASSERT_TYPE (scm_is_symbol (name), name, SCM_ARG2, __FUNCTION__, "symbol"); - tr = tr->where_defined (name); + SCM val; + tr = tr->where_defined (name, &val); if (tr) return tr->self_scm (); return SCM_EOL; } -LY_DEFINE (ly_unset_context_property, "ly:context-unset-property", 2, 0, 0, - (SCM context, SCM name), - "Unset value of property @var{name} in context @var{context}.") +LY_DEFINE (ly_context_unset_property, "ly:context-unset-property", 2, 0, 0, + (SCM context, SCM name), + "Unset value of property @var{name} in context @var{context}.") { + LY_ASSERT_SMOB (Context, context, 1); + LY_ASSERT_TYPE (ly_is_symbol, name, 2); Context *tr = unsmob_context (context); - SCM_ASSERT_TYPE (tr, context, SCM_ARG1, __FUNCTION__, "Context"); - SCM_ASSERT_TYPE (scm_is_symbol (name), name, SCM_ARG2, __FUNCTION__, "symbol"); tr->unset_property (name); return SCM_UNSPECIFIED; } LY_DEFINE (ly_context_parent, "ly:context-parent", - 1, 0, 0, (SCM context), - "Return the parent of @var{context}, @code{#f} if none.") + 1, 0, 0, (SCM context), + "Return the parent of @var{context}, @code{#f} if none.") { + LY_ASSERT_SMOB (Context, context, 1); Context *tr = unsmob_context (context); - SCM_ASSERT_TYPE (tr, context, SCM_ARG1, __FUNCTION__, "Context"); - tr = tr->get_parent_context () ; + tr = tr->get_parent_context (); if (tr) return tr->self_scm (); else @@ -134,22 +166,48 @@ LY_DEFINE (ly_context_parent, "ly:context-parent", /* FIXME: todo: should support translator IDs, and creation? */ LY_DEFINE (ly_context_find, "ly:context-find", - 2, 0, 0, (SCM context, SCM name), - "Find a parent of @var{context} that has name or alias @var{name}. " - "Return @code{#f} if not found.") + 2, 0, 0, (SCM context, SCM name), + "Find a parent of @var{context} that has name or alias @var{name}." + " Return @code{#f} if not found.") { + LY_ASSERT_SMOB (Context, context, 1); + LY_ASSERT_TYPE (ly_is_symbol, name, 2); Context *tr = unsmob_context (context); - SCM_ASSERT_TYPE (tr, context, SCM_ARG1, __FUNCTION__, "context"); - SCM_ASSERT_TYPE (scm_is_symbol (name), name, SCM_ARG2, __FUNCTION__, "symbol"); - + while (tr) { if (tr->is_alias (name)) - return tr->self_scm (); - tr = tr->get_parent_context () ; + return tr->self_scm (); + tr = tr->get_parent_context (); } - + return SCM_BOOL_F; } +LY_DEFINE (ly_context_now, "ly:context-now", + 1, 0, 0, (SCM context), + "Return @code{now-moment} of context @var{context}.") +{ + LY_ASSERT_SMOB (Context, context, 1); + Context *ctx = unsmob_context (context); + return ctx->now_mom ().smobbed_copy (); +} + +LY_DEFINE (ly_context_event_source, "ly:context-event-source", + 1, 0, 0, (SCM context), + "Return @code{event-source} of context @var{context}.") +{ + LY_ASSERT_SMOB (Context, context, 1); + Context *ctx = unsmob_context (context); + return ctx->event_source ()->self_scm (); +} +LY_DEFINE (ly_context_events_below, "ly:context-events-below", + 1, 0, 0, (SCM context), + "Return a @code{stream-distributor} that distributes all events" + " from @var{context} and all its subcontexts.") +{ + LY_ASSERT_SMOB (Context, context, 1); + Context *ctx = unsmob_context (context); + return ctx->events_below ()->self_scm (); +}