reorganization: Finish moving parsing and AST

blueprintcompiler/language/gtkbuilder_child.py

@@ -0,0 +1,45 @@
+# gtkbuilder_child.py
+#
+# Copyright 2022 James Westman <james@jwestman.net>
+#
+# This file is free software; you can redistribute it and/or modify it
+# under the terms of the GNU Lesser General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+#
+# This file 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
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+# SPDX-License-Identifier: LGPL-3.0-or-later
+
+
+from .gobject_object import Object
+from .common import *
+
+
+class Child(AstNode):
+    grammar = [
+        Optional([
+            "[",
+            Optional(["internal-child", UseLiteral("internal_child", True)]),
+            UseIdent("child_type").expected("a child type"),
+            "]",
+        ]),
+        Object,
+    ]
+
+    def emit_xml(self, xml: XmlEmitter):
+        child_type = internal_child = None
+        if self.tokens["internal_child"]:
+            internal_child = self.tokens["child_type"]
+        else:
+            child_type = self.tokens["child_type"]
+        xml.start_tag("child", type=child_type, internal_child=internal_child)
+        for child in self.children:
+            child.emit_xml(xml)
+        xml.end_tag()