reorganization: Finish moving parsing and AST

blueprintcompiler/language/gobject_object.py

@@ -0,0 +1,97 @@
+# gobject_object.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 .common import *
+
+
+class ObjectContent(AstNode):
+    grammar = ["{", Until(OBJECT_CONTENT_HOOKS, "}")]
+
+    @property
+    def gir_class(self):
+        return self.parent.gir_class
+
+    # @validate()
+    # def only_one_style_class(self):
+    #     if len(self.children[Style]) > 1:
+    #         raise CompileError(
+    #             f"Only one style directive allowed per object, but this object contains {len(self.children[Style])}",
+    #             start=self.children[Style][1].group.start,
+    #         )
+
+    def emit_xml(self, xml: XmlEmitter):
+        for x in self.children:
+            x.emit_xml(xml)
+
+class Object(AstNode):
+    grammar = Sequence(
+        class_name,
+        Optional(UseIdent("id")),
+        ObjectContent,
+    )
+
+    @validate("namespace")
+    def gir_ns_exists(self):
+        if not self.tokens["ignore_gir"]:
+            self.root.gir.validate_ns(self.tokens["namespace"])
+
+    @validate("class_name")
+    def gir_class_exists(self):
+        if self.tokens["class_name"] and not self.tokens["ignore_gir"] and self.gir_ns is not None:
+            self.root.gir.validate_class(self.tokens["class_name"], self.tokens["namespace"])
+
+    @property
+    def gir_ns(self):
+        if not self.tokens["ignore_gir"]:
+            return self.root.gir.namespaces.get(self.tokens["namespace"] or "Gtk")
+
+    @property
+    def gir_class(self):
+        if self.tokens["class_name"] and not self.tokens["ignore_gir"]:
+            return self.root.gir.get_class(self.tokens["class_name"], self.tokens["namespace"])
+
+
+    @docs("namespace")
+    def namespace_docs(self):
+        if ns := self.root.gir.namespaces.get(self.tokens["namespace"]):
+            return ns.doc
+
+
+    @docs("class_name")
+    def class_docs(self):
+        if self.gir_class:
+            return self.gir_class.doc
+
+
+    def emit_xml(self, xml: XmlEmitter):
+        xml.start_tag("object", **{
+            "class": self.gir_class.glib_type_name if self.gir_class else self.tokens["class_name"],
+            "id": self.tokens["id"],
+        })
+        for child in self.children:
+            child.emit_xml(xml)
+        xml.end_tag()
+
+
+def validate_parent_type(node, ns: str, name: str, err_msg: str):
+    parent = node.root.gir.get_type(name, ns)
+    container_type = node.parent_by_type(Object).gir_class
+    if container_type and not container_type.assignable_to(parent):
+        raise CompileError(f"{container_type.full_name} is not a {parent.full_name}, so it doesn't have {err_msg}")