X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fstream-event-scheme.cc;h=8a83f499e2120a176c9bf31b0f016d2cb367f2e5;hb=32a34dcef0c0041c6d62677487a380b5c8b85712;hp=ea9365496187c371bbe721be6b72906b1b8586f2;hpb=abbdb46061be5c0a0682059d1f86bf3e44ca5cf3;p=lilypond.git

diff --git a/lily/stream-event-scheme.cc b/lily/stream-event-scheme.cc
index ea93654961..8a83f499e2 100644
--- a/lily/stream-event-scheme.cc
+++ b/lily/stream-event-scheme.cc
@@ -1,44 +1,84 @@
 /*
-  stream-event.cc -- implement Scheme bindings for Stream_event
+  This file is part of LilyPond, the GNU music typesetter.
 
-  source file of the GNU LilyPond music typesetter
+  Copyright (C) 2006--2012 Erik Sandberg  <mandolaerik@gmail.com>
 
-  (c) 2006 Erik Sandberg  <mandolaerik@gmail.com>
+  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 <http://www.gnu.org/licenses/>.
 */
 
 #include "stream-event.hh"
 
+LY_DEFINE (ly_stream_event_p, "ly:stream-event?",
+           1, 0, 0, (SCM obj),
+           "Is @code{@var{obj}} a @code{Stream_event} object?")
+{
+  return scm_from_bool (unsmob_stream_event (obj));
+}
+
 LY_DEFINE (ly_make_stream_event, "ly:make-stream-event",
-	   1, 1, 0, (SCM cl, SCM proplist),
-	   "Creates a stream event of class @var{cl} with the given mutable property list.\n" )
+           1, 1, 0, (SCM cl, SCM proplist),
+           "Create a stream event of class @var{cl} with the given"
+           " mutable property list.")
 {
-  SCM_ASSERT_TYPE (scm_is_symbol (cl), cl, SCM_ARG1, __FUNCTION__, "symbol");
-  if (proplist != SCM_UNDEFINED)
-    {
-      SCM_ASSERT_TYPE (scm_list_p (proplist), proplist, SCM_ARG2, __FUNCTION__, "association list");
-    }
-  else
+  LY_ASSERT_TYPE (ly_is_symbol, cl, 1);
+
+  /* should be scm_list_p, but scm_list_p is expensive. */
+  LY_ASSERT_TYPE (scm_is_pair, proplist, 2);
+
+  if (proplist == SCM_UNDEFINED)
     proplist = SCM_EOL;
+
   Stream_event *e = new Stream_event (cl, proplist);
   return e->unprotect ();
 }
 
-LY_DEFINE (ly_event_property, "ly:event-property", 
+LY_DEFINE (ly_event_property, "ly:event-property",
            2, 0, 0, (SCM sev, SCM sym),
-	   "Get the property @var{sym} of stream event @var{mus}.\n"
-	   "If @var{sym} is undefined, return @code{' ()}.\n")
+           "Get the property @var{sym} of stream event @var{mus}."
+           "  If @var{sym} is undefined, return @code{'()}.")
 {
+  LY_ASSERT_TYPE (unsmob_stream_event, sev, 1);
+  LY_ASSERT_TYPE (ly_is_symbol, sym, 2);
+
   Stream_event *e = unsmob_stream_event (sev);
-  SCM_ASSERT_TYPE (e, sev, SCM_ARG1, __FUNCTION__, "stream event");
-  SCM_ASSERT_TYPE (scm_is_symbol (sym), sym, SCM_ARG2, __FUNCTION__, "symbol");
 
   return e->internal_get_property (sym);
 }
 
-LY_DEFINE (ly_event_set_property, "ly:event-set-property!",
+LY_DEFINE (ly_event_set_property_x, "ly:event-set-property!",
            3, 0, 0, (SCM ev, SCM sym, SCM val),
-           "Set property @var{sym} in event @var{ev} to @var{val}."){
-  Stream_event *sc = unsmob_stream_event (ev);
-  SCM_ASSERT_TYPE (sc, ev, SCM_ARG1, __FUNCTION__, "event");
+           "Set property @var{sym} in event @var{ev} to @var{val}.")
+{
+  LY_ASSERT_TYPE (unsmob_stream_event, ev, 1);
+  LY_ASSERT_TYPE (ly_is_symbol, sym, 2);
+
   return ly_prob_set_property_x (ev, sym, val);
 }
+
+LY_DEFINE (ly_event_deep_copy, "ly:event-deep-copy",
+           1, 0, 0, (SCM m),
+           "Copy @var{m} and all sub expressions of@tie{}@var{m}.")
+{
+  SCM copy = m;
+  if (Stream_event *ev = unsmob_stream_event (m))
+    {
+      ev = ev->clone ();
+      copy = ev->unprotect ();
+    }
+  else if (scm_is_pair (m))
+    copy = scm_cons (ly_event_deep_copy (scm_car (m)),
+                     ly_event_deep_copy (scm_cdr (m)));
+
+  return copy;
+}