[gobject-introspection] Validate scope annotation values

[Owen Taylor <otaylor src gnome org>]

commit a78f828cceab49038f4777dd85e2c898f86d51ab
Author: Owen W. Taylor <otaylor fishsoup net>
Date:   Thu May 6 18:15:37 2010 -0400

    Validate scope annotation values
    
    Make sure that the value specified for scope in a callback
    annotation is one of the legal values.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=617978

 giscanner/annotationparser.py |   10 ++++++++++
 giscanner/ast.py              |    4 ++++
 2 files changed, 14 insertions(+), 0 deletions(-)
---
diff --git a/giscanner/annotationparser.py b/giscanner/annotationparser.py
index 99da0bf..5fa7cfc 100644
--- a/giscanner/annotationparser.py
+++ b/giscanner/annotationparser.py
@@ -31,6 +31,9 @@ from .ast import (Array, Bitfield, Callback, Class, Enum, Field, Function,
                   PARAM_DIRECTION_INOUT,
                   PARAM_DIRECTION_IN,
                   PARAM_DIRECTION_OUT,
+                  PARAM_SCOPE_CALL,
+                  PARAM_SCOPE_ASYNC,
+                  PARAM_SCOPE_NOTIFIED,
                   PARAM_TRANSFER_NONE,
                   PARAM_TRANSFER_CONTAINER,
                   PARAM_TRANSFER_FULL,
@@ -526,6 +529,13 @@ class AnnotationApplier(object):
             scope = options.get(OPT_SCOPE)
             if scope:
                 param.scope = scope.one()
+                if param.scope not in [PARAM_SCOPE_CALL,
+                                       PARAM_SCOPE_ASYNC,
+                                       PARAM_SCOPE_NOTIFIED]:
+                    raise InvalidAnnotationError(
+                        "scope for %s of %r is invalid (%r), must be one of "
+                        "call, async, notified."
+                        % (param.name, parent.name, param.scope))
                 param.transfer = PARAM_TRANSFER_NONE
             elif (param.type.ctype == 'GAsyncReadyCallback' or
                   param.type.name == 'Gio.AsyncReadyCallback'):
diff --git a/giscanner/ast.py b/giscanner/ast.py
index 9b43202..1265883 100644
--- a/giscanner/ast.py
+++ b/giscanner/ast.py
@@ -82,6 +82,10 @@ PARAM_DIRECTION_IN = 'in'
 PARAM_DIRECTION_OUT = 'out'
 PARAM_DIRECTION_INOUT = 'inout'
 
+PARAM_SCOPE_CALL = 'call'
+PARAM_SCOPE_ASYNC = 'async'
+PARAM_SCOPE_NOTIFIED = 'notified'
+
 PARAM_TRANSFER_NONE = 'none'
 PARAM_TRANSFER_CONTAINER = 'container'
 PARAM_TRANSFER_FULL = 'full'