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xml_node: change with_sub_node signature

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The `with_sub_node` method is renamed to `with_optional_sub_node` to
better reflect that the non-existence of a sub node with the desired type is
ignored.
At the same time, the new `with_sub_node` now takes a second functor that is
called when no sub node of the desired type exists.

genodelabs/genode#4600
This commit is contained in:
Johannes Schlatow
2022-09-08 10:17:26 +02:00
committed by Norman Feske
parent f0e9881c7e
commit 7d143087c9
47 changed files with 220 additions and 205 deletions
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2
repos/gems/src/server/terminal/main.cc
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@ -211,7 +211,7 @@ struct Terminal::Main : Character_consumer
_fb_mode = _gui.mode();
/* apply initial size from config, if provided */
_config.xml().with_sub_node("initial", [&] (Xml_node const &initial) {
_config.xml().with_optional_sub_node("initial", [&] (Xml_node const &initial) {
_fb_mode.area = Area(initial.attribute_value("width", _fb_mode.area.w()),
initial.attribute_value("height", _fb_mode.area.h()));
});