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expressions: Add closure expressions

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James Westman 2022-04-30 13:27:54 -05:00
parent 8a7941dcbf
commit 3f7688a563
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6 changed files with 69 additions and 0 deletions
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5
tests/sample_errors/closure_not_cast.blp Normal file
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@ -0,0 +1,5 @@
using Gtk 4.0;
Label {
label: bind my_func();
}

1
tests/sample_errors/closure_not_cast.err Normal file
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@ -0,0 +1 @@
4,15,9,Closure expression needs to be cast to my_func's return type

11
tests/samples/expr_closure.blp Normal file
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@ -0,0 +1,11 @@
using Gtk 4.0;
Box {
Box box {
}
}
Stack {
visible-child: bind ((Gtk.Button)my_closure(box.parent)).parent;
visible: bind (bool) my_other_closure(box);
}

25
tests/samples/expr_closure.ui Normal file
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@ -0,0 +1,25 @@
<?xml version="1.0" encoding="UTF-8"?>
<interface>
<requires lib="gtk" version="4.0"/>
<object class="GtkBox">
<child>
<object class="GtkBox" id="box"></object>
</child>
</object>
<object class="GtkStack">
<binding name="visible-child">
<lookup name="parent" type="GtkButton">
<closure function="my_closure" type="GtkButton">
<lookup name="parent">
<constant>box</constant>
</lookup>
</closure>
</lookup>
</binding>
<binding name="visible">
<closure function="my_other_closure" type="gboolean">
<constant>box</constant>
</closure>
</binding>
</object>
</interface>

2
tests/test_samples.py
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@ -136,6 +136,7 @@ class TestSamples(unittest.TestCase):
self.assert_sample("combo_box_text")
self.assert_sample("comments")
self.assert_sample("enum")
self.assert_sample("expr_closure")
self.assert_sample("expr_lookup")
self.assert_sample("file_filter")
self.assert_sample("flags")
@ -179,6 +180,7 @@ class TestSamples(unittest.TestCase):
self.assert_sample_error("bitfield_member_dne")
self.assert_sample_error("class_assign")
self.assert_sample_error("class_dne")
self.assert_sample_error("closure_not_cast")
self.assert_sample_error("consecutive_unexpected_tokens")
self.assert_sample_error("does_not_implement")
self.assert_sample_error("duplicate_obj_id")