xcb-proto git update 15/5/2010

1 files changed, 95 insertions, 88 deletions

diff --git a/libxcb/xcb-proto/xcbgen/expr.py b/libxcb/xcb-proto/xcbgen/expr.py
index 522e17d09..9b1855425 100644
--- a/libxcb/xcb-proto/xcbgen/expr.py
+++ b/libxcb/xcb-proto/xcbgen/expr.py
@@ -1,88 +1,95 @@
-'''
-This module contains helper classes for structure fields and length expressions.
-'''
-class Field(object):
-    '''
-    Represents a field of a structure.
-
-    type is the datatype object for the field.
-    field_type is the name of the type (string tuple)
-    field_name is the name of the structure field.
-    visible is true iff the field should be in the request API.
-    wire is true iff the field should be in the request structure.
-    auto is true iff the field is on the wire but not in the request API (e.g. opcode)
-    '''
-    def __init__(self, type, field_type, field_name, visible, wire, auto):
-        self.type = type
-        self.field_type = field_type
-        self.field_name = field_name
-        self.visible = visible
-        self.wire = wire
-        self.auto = auto
-
-
-class Expression(object):
-    '''
-    Represents a mathematical expression for a list length or exprfield.
-
-    Public fields:
-    op is the operation (text +,*,/,<<) or None.
-    lhs and rhs are the sub-Expressions if op is set.
-    lenfield_name is the name of the length field, or None for request lists.
-    lenfield is the Field object for the length field, or None.
-    bitfield is True if the length field is a bitmask instead of a number.
-    nmemb is the fixed size (value)of the expression, or None
-    '''
-    def __init__(self, elt, parent):
-        self.parent = parent
-
-        self.nmemb = None
-
-        self.lenfield_name = None
-        self.lenfield_type = None
-        self.lenfield = None
-        self.lenwire = False
-        self.bitfield = False
-
-        self.op = None
-        self.lhs = None
-        self.rhs = None
-
-        if elt.tag == 'list':
-            # List going into a request, which has no length field (inferred by server)
-            self.lenfield_name = elt.get('name') + '_len'
-            self.lenfield_type = 'CARD32'
-
-        elif elt.tag == 'fieldref':
-            # Standard list with a fieldref
-            self.lenfield_name = elt.text
-
-        elif elt.tag == 'valueparam':
-            # Value-mask.  The length bitmask is described by attributes.
-            self.lenfield_name = elt.get('value-mask-name')
-            self.lenfield_type = elt.get('value-mask-type')
-            self.lenwire = True
-            self.bitfield = True
-
-        elif elt.tag == 'op':
-            # Op field.  Need to recurse.
-            self.op = elt.get('op')
-            self.lhs = Expression(list(elt)[0], parent)
-            self.rhs = Expression(list(elt)[1], parent)
-
-            # Hopefully we don't have two separate length fields...
-            self.lenfield_name = self.lhs.lenfield_name
-            if self.lenfield_name == None:
-                self.lenfield_name = self.rhs.lenfield_name
-
-        elif elt.tag == 'value':
-            # Constant expression
-            self.nmemb = int(elt.text)
-
-        else:
-            # Notreached
-            raise Exception('XXX')
-
-
-    def fixed_size(self):
-        return self.nmemb != None
+'''

+This module contains helper classes for structure fields and length expressions.

+'''

+class Field(object):

+    '''

+    Represents a field of a structure.

+

+    type is the datatype object for the field.

+    field_type is the name of the type (string tuple)

+    field_name is the name of the structure field.

+    visible is true iff the field should be in the request API.

+    wire is true iff the field should be in the request structure.

+    auto is true iff the field is on the wire but not in the request API (e.g. opcode)

+    '''

+    def __init__(self, type, field_type, field_name, visible, wire, auto):

+        self.type = type

+        self.field_type = field_type

+        self.field_name = field_name

+        self.visible = visible

+        self.wire = wire

+        self.auto = auto

+

+

+class Expression(object):

+    '''

+    Represents a mathematical expression for a list length or exprfield.

+

+    Public fields:

+    op is the operation (text +,*,/,<<,~) or None.

+    lhs and rhs are the sub-Expressions if op is set.

+    lenfield_name is the name of the length field, or None for request lists.

+    lenfield is the Field object for the length field, or None.

+    bitfield is True if the length field is a bitmask instead of a number.

+    nmemb is the fixed size (value)of the expression, or None

+    '''

+    def __init__(self, elt, parent):

+        self.parent = parent

+

+        self.nmemb = None

+

+        self.lenfield_name = None

+        self.lenfield_type = None

+        self.lenfield = None

+        self.lenwire = False

+        self.bitfield = False

+

+        self.op = None

+        self.lhs = None

+        self.rhs = None

+

+        if elt.tag == 'list':

+            # List going into a request, which has no length field (inferred by server)

+            self.lenfield_name = elt.get('name') + '_len'

+            self.lenfield_type = 'CARD32'

+

+        elif elt.tag == 'fieldref':

+            # Standard list with a fieldref

+            self.lenfield_name = elt.text

+

+        elif elt.tag == 'valueparam':

+            # Value-mask.  The length bitmask is described by attributes.

+            self.lenfield_name = elt.get('value-mask-name')

+            self.lenfield_type = elt.get('value-mask-type')

+            self.lenwire = True

+            self.bitfield = True

+

+        elif elt.tag == 'op':

+            # Op field.  Need to recurse.

+            self.op = elt.get('op')

+            self.lhs = Expression(list(elt)[0], parent)

+            self.rhs = Expression(list(elt)[1], parent)

+

+            # Hopefully we don't have two separate length fields...

+            self.lenfield_name = self.lhs.lenfield_name

+            if self.lenfield_name == None:

+                self.lenfield_name = self.rhs.lenfield_name

+

+        elif elt.tag == 'unop':

+            # Op field.  Need to recurse.

+            self.op = elt.get('op')

+            self.rhs = Expression(list(elt)[0], parent)

+

+            self.lenfield_name = self.rhs.lenfield_name

+

+        elif elt.tag == 'value':

+            # Constant expression

+            self.nmemb = int(elt.text, 0)

+

+        else:

+            # Notreached

+            raise Exception('XXX')

+

+

+    def fixed_size(self):

+        return self.nmemb != None