[Xcb] [PATCH proto 1/7] xcbgen: fields get a parent reference

[Christian Linhart]

Objects of type Field get a reference to their parent.
This is needed in the generator to differentiate
field handling dependend on properties of their parent.
---
 xcbgen/expr.py   | 1 +
 xcbgen/xtypes.py | 1 +
 2 files changed, 2 insertions(+)

diff --git a/xcbgen/expr.py b/xcbgen/expr.py
index e4fb06e..51e738f 100644
--- a/xcbgen/expr.py
+++ b/xcbgen/expr.py
@@ -18,14 +18,15 @@ class Field(object):
         self.field_type = field_type
         self.field_name = field_name
         self.enum = enum
         self.visible = visible
         self.wire = wire
         self.auto = auto
         self.isfd = isfd
+        self.parent = None
 
 
 class Expression(object):
     '''
     Represents a mathematical expression for a list length or exprfield.
 
     Public fields:
diff --git a/xcbgen/xtypes.py b/xcbgen/xtypes.py
index 45d7568..8ecbaa2 100644
--- a/xcbgen/xtypes.py
+++ b/xcbgen/xtypes.py
@@ -72,14 +72,15 @@ class Type(object):
         # We dump the _placeholder_byte if any fields are added.
         for (idx, field) in enumerate(complex_type.fields):
             if field == _placeholder_byte:
                 complex_type.fields[idx] = new_field
                 return
 
         complex_type.fields.append(new_field)
+        new_field.parent = complex_type
 
     def make_fd_of(self, module, complex_type, fd_name):
         '''
         Method for making a fd member of a structure.
         '''
         new_fd = Field(self, module.get_type_name('INT32'), fd_name, True, False, False, None, True)
         # We dump the _placeholder_byte if any fields are added.
-- 
2.0.1