Here is a proof of concept for a patch for reflection.c
Any comments?
Index: mono/metadata/reflection.c
===================================================================
--- mono/metadata/reflection.c (revision 125493)
+++ mono/metadata/reflection.c (working copy)
@@ -8185,6 +8185,35 @@
return FALSE;
}
+/** added start **/
+
+gboolean
+mono_custom_attrs_has_attr_partial (MonoCustomAttrInfo *ainfo, const char *attr_assembly, const char *attr_name_space, const char *attr_name)
+{
+ int i;
+ MonoClass *klass;
+
+ if (attr_name == NULL)
+ return FALSE;
+
+ for (i = 0; i < ainfo->num_attrs; ++i) {
+ klass = ainfo->attrs [i].ctor->klass;
+ if (attr_assembly != NULL)
+ if (strcmp (klass->image->assembly_name, attr_assembly) )
+ continue;
+
+ if (attr_name_space != NULL)
+ if (strcmp (klass->name_space, attr_name_space) )
+ continue;
+
+ if (!strcmp (klass->name, attr_name) )
+ return TRUE;
+ }
+ return FALSE;
+}
+
+/** added end **/
+
MonoObject*
mono_custom_attrs_get_attr (MonoCustomAttrInfo *ainfo, MonoClass *attr_klass)
{
@@ -8210,6 +8239,120 @@
return NULL;
}
+/** added start **/
+/*NOTE, this doesn't work with dynamic assemblies*/
+gboolean
+mono_image_has_assembly_ref (MonoImage *image, const char *target_assembly)
+{
+ MonoTableInfo *t;
+ int i;
+
+ //TODO: Fix this to work with dynamic assemblies.
+ if (image->dynamic)
+ return FALSE;
+
+ t = &image->tables [MONO_TABLE_ASSEMBLYREF];
+ for (i = 0; i < t->rows; i++) {
+ const char *ref_name = mono_metadata_string_heap (image, mono_metadata_decode_row_col (t, i, MONO_ASSEMBLYREF_NAME));
+ if (!strcmp (target_assembly, ref_name))
+ return TRUE;
+ }
+ return FALSE;
+}
+
+
+gboolean
+mono_index_has_custom_attr (MonoImage *image, guint32 idx, const char *attr_assembly, const char *attr_name_space, const char *attr_name)
+{
+ guint32 mtoken, i, x;
+ guint32 cols [MONO_CUSTOM_ATTR_SIZE];
+ MonoTableInfo *ca;
+ MonoMethod* attr_ctor;
+
+ ca = &image->tables [MONO_TABLE_CUSTOMATTRIBUTE];
+
+ if (attr_name == NULL)
+ return FALSE;
+
+ if (attr_assembly != NULL)
+ if (!mono_image_has_assembly_ref(image, attr_assembly))
+ return FALSE;
+
+ i = mono_metadata_custom_attrs_from_index (image, idx);
+ if (!i)
+ return FALSE;
+ i --;
+
+ for (x = i; i < ca->rows; x++) {
+ if (mono_metadata_decode_row_col (ca, x, MONO_CUSTOM_ATTR_PARENT) != idx)
+ break;
+ mono_metadata_decode_row (ca, x, cols, MONO_CUSTOM_ATTR_SIZE);
+ mtoken = cols [MONO_CUSTOM_ATTR_TYPE] >> MONO_CUSTOM_ATTR_TYPE_BITS;
+ switch (cols [MONO_CUSTOM_ATTR_TYPE] & MONO_CUSTOM_ATTR_TYPE_MASK) {
+ case MONO_CUSTOM_ATTR_TYPE_METHODDEF:
+ mtoken |= MONO_TOKEN_METHOD_DEF;
+ break;
+ case MONO_CUSTOM_ATTR_TYPE_MEMBERREF:
+ mtoken |= MONO_TOKEN_MEMBER_REF;
+ break;
+ default:
+ g_error ("Unknown table for custom attr type %08x", cols [MONO_CUSTOM_ATTR_TYPE]);
+ break;
+ }
+ attr_ctor = mono_get_method (image, mtoken, NULL);
+ if (!attr_ctor) {
+ g_warning ("Can't find custom attr constructor image: %s mtoken: 0x%08x", image->name, mtoken);
+ return FALSE;
+ } else {
+ if (attr_assembly != NULL)
+ if (strcmp (attr_ctor->klass->image->assembly_name, attr_assembly) )
+ continue;
+
+ if (attr_name_space != NULL)
+ if (strcmp (attr_ctor->klass->name_space, attr_name_space) )
+ continue;
+
+ if (!strcmp (attr_ctor->klass->name, attr_name) )
+ return TRUE;
+ }
+ }
+
+ return FALSE;
+}
+
+gboolean
+mono_method_has_custom_attr (MonoMethod *method, const char *attr_assembly, const char *attr_name_space, const char *attr_name)
+{
+ guint32 idx;
+
+ /*
+ * An instantiated method has the same cattrs as the generic method definition.
+ *
+ * LAMESPEC: The .NET SRE throws an exception for instantiations of generic method builders
+ * Note that this stanza is not necessary for non-SRE types, but it's a micro-optimization
+ */
+ if (method->is_inflated)
+ method = ((MonoMethodInflated *) method)->declaring;
+
+ if (method->dynamic || method->klass->image->dynamic) {
+ gboolean result;
+ MonoCustomAttrInfo *ainfo = lookup_custom_attr (method->klass->image, method);
+
+ if (ainfo != NULL) {
+ result = mono_custom_attrs_has_attr_partial (ainfo, attr_assembly, attr_name_space, attr_name);
+ mono_custom_attrs_free (ainfo);
+ return result;
+ }
+ }
+
+ idx = mono_method_get_index (method);
+ idx <<= MONO_CUSTOM_ATTR_BITS;
+ idx |= MONO_CUSTOM_ATTR_METHODDEF;
+ return mono_index_has_custom_attr (method->klass->image, idx, attr_assembly, attr_name_space, attr_name);
+}
+
+/** added end **/
+
/*
* mono_reflection_get_custom_attrs_info:
* @obj: a reflection object handle
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