From 974405a7ad177965551a9ec5b4bf68b7fe4517aa Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Hugo=20H=C3=B6rnquist?= Date: Sun, 10 Mar 2019 23:30:27 +0100 Subject: Add filter-children! --- guile_interface.scm.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'guile_interface.scm.c') diff --git a/guile_interface.scm.c b/guile_interface.scm.c index a5921869..3d0bff1e 100644 --- a/guile_interface.scm.c +++ b/guile_interface.scm.c @@ -111,6 +111,27 @@ SCM_DEFINE(vcomponent_children, "%vcomponent-children", 1, 0, 0, return llist; } +SCM_DEFINE(vcomponent_filter_children_x, "%vcomponent-filter-children!", + 2, 0, 0, + (SCM pred, SCM component), + "Remove all children from component who DOESN'T satisfy `pred`") +{ + scm_assert_foreign_object_type (vcomponent_type, component); + vcomponent* cal = scm_foreign_object_ref (component, 0); + + for (LINK(vcomponent)* l = FIRST(&cal->components); + l->after != NULL; + l = l->after) + { + if (scm_is_false(scm_call_1 (pred, scm_from_vcomponent(l->value)))) { + FFREE(vcomponent, l->value); + UNLINK(LINK(vcomponent))(l); + } + } + + return SCM_UNSPECIFIED; +} + SCM_DEFINE(vcomponent_push_child_x, "%vcomponent-push-child!", 2, 0, 0, (SCM component, SCM child), "") -- cgit v1.2.3