transformer: Ensure that types aren't resolved if we can't find them

This ensures that things can't try to reference undefined/invalid types
without emitting warnings, and that users need to include other GIRs at
build time if they want to reference another type.

https://bugzilla.gnome.org/show_bug.cgi?id=693098

3 files changed, 36 insertions, 5 deletions

diff --git a/giscanner/maintransformer.py b/giscanner/maintransformer.py
index d149f30a..4eaf6401 100644
--- a/giscanner/maintransformer.py
+++ b/giscanner/maintransformer.py
@@ -306,7 +306,7 @@ usage is void (*_gtk_reserved1)(void);"""
             else:
                 text = type_str
             message.warn_node(parent, "%s: Unknown type: %r" %
-                              (text, result.ctype), positions=position)
+                              (text, type_str), positions=position)
         return result
 
     def _resolve_toplevel(self, type_str, type_node=None, node=None, parent=None):
diff --git a/giscanner/transformer.py b/giscanner/transformer.py
index 25857b73..0858b8d3 100644
--- a/giscanner/transformer.py
+++ b/giscanner/transformer.py
@@ -877,9 +877,12 @@ Note that type resolution may not succeed."""
         if '.' in typestr:
             container = self._create_bare_container_type(typestr)
             if container:
-                return container
-            return self._namespace.type_from_name(typestr)
-        typeval = self.create_type_from_ctype_string(typestr)
+                typeval = container
+            else:
+                typeval = self._namespace.type_from_name(typestr)
+        else:
+            typeval = self.create_type_from_ctype_string(typestr)
+
         self.resolve_type(typeval)
         if typeval.resolved:
             # Explicitly clear out the c_type; there isn't one in this case.
@@ -924,7 +927,7 @@ Note that type resolution may not succeed."""
                 return True
         return False
 
-    def resolve_type(self, typeval):
+    def _resolve_type_internal(self, typeval):
         if isinstance(typeval, (ast.Array, ast.List)):
             return self.resolve_type(typeval.element_type)
         elif isinstance(typeval, ast.Map):
@@ -938,6 +941,25 @@ Note that type resolution may not succeed."""
         elif typeval.gtype_name:
             return self._resolve_type_from_gtype_name(typeval)
 
+    def resolve_type(self, typeval):
+        if not self._resolve_type_internal(typeval):
+            return False
+
+        if typeval.target_fundamental or typeval.target_foreign:
+            return True
+
+        assert typeval.target_giname is not None
+
+        try:
+            type_ = self.lookup_giname(typeval.target_giname)
+        except KeyError:
+            typeval.target_giname = None
+
+        if type_ is None:
+            typeval.target_giname = None
+
+        return typeval.resolved
+
     def _typepair_to_str(self, item):
         nsname, item = item
         if nsname is None:
diff --git a/tests/warn/invalid-element-type.h b/tests/warn/invalid-element-type.h
index c9ff3040..bcd9123b 100644
--- a/tests/warn/invalid-element-type.h
+++ b/tests/warn/invalid-element-type.h
@@ -65,6 +65,14 @@ void test_invalid_ptrarray_element_type(GPtrArray *p1, GPtrArray *p2);
 
 GList* test_unresolved_element_type(void);
 
+/**
+ * test_unresolved_value_element_type:
+ *
+ * Returns: (element-type GLib.Value) (transfer full):
+ */
+
+GPtrArray* test_unresolved_value_element_type(void);
+
 
 // EXPECT:5: Warning: Test: element-type annotation takes at least one option, none given
 // EXPECT:6: Warning: Test: element-type annotation for a list must have exactly one option, not 2 options
@@ -78,6 +86,7 @@ GList* test_unresolved_element_type(void);
 // EXPECT:51: Warning: Test: element-type annotation takes at least one option, none given
 // EXPECT:52: Warning: Test: invalid (element-type) for a GPtrArray, must be a pointer
 // EXPECT:63: Warning: Test: test_unresolved_element_type: Unknown type: 'Unresolved'
+// EXPECT:71: Warning: Test: test_unresolved_value_element_type: Unknown type: 'GLib.Value'
 // EXPECT:4: Warning: Test: test_invalid_list_element_type: argument l1: Missing (element-type) annotation
 // EXPECT:4: Warning: Test: test_invalid_list_element_type: argument l2: Missing (element-type) annotation
 // EXPECT:50: Warning: Test: test_invalid_ptrarray_element_type: argument p1: Missing (element-type) annotation