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generator: support listelement-ref 

Support for listelement-ref needs the following three changes
(in the order as they appear in the patch):

* making the current list-element accessible with the variable
  xcb_listelement which is a pointer to the list-element

* supporting lists of simple-type for sumof with a nested expression

* using the variable for resolving a listelement-ref expression

Changes for V2 of this patch:
- adapt to removal of patch "libxcb 2/6" from patchset "ListInputDevices".

Changes for V3 of this patch:
- adapt to V2 of patch "libxcb 5/6" from patchset "ListInputDevices"

Changes for V4 of this patch:
- adapt to revision 2 of the patchset "ListInputDevices"

Message-ID: <545743A0.50907@DemoRecorder.com>
Patch-Thread-Subject: [Xcb] support popcount of a list and associated xml changes
Patch-Set: PopcountList
Patch-Number: libxcb 4/4
Patch-Version: V4
Signed-off-by: Christian Linhart <chris@DemoRecorder.com>
This commit is contained in:
Christian Linhart 2014-11-03 09:58:08 +01:00 committed by Christian Linhart
parent 422458b663
commit 912cd97a6d
1 changed files with 15 additions and 4 deletions
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19
src/c_client.py
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@ -1646,6 +1646,14 @@ def _c_accessor_get_expr(expr, field_mapping):
_c_pre.code("for (%s = 0; %s < %s; %s++) {", loopvar, loopvar, lengthvar, loopvar) _c_pre.code("for (%s = 0; %s < %s; %s++) {", loopvar, loopvar, lengthvar, loopvar)
_c_pre.indent() _c_pre.indent()
# define and set xcb_listelement, so that it can be used by
# listelement-ref expressions.
if expr.contains_listelement_ref:
_c_pre.code(
"const %s *xcb_listelement = %s;",
field.c_field_type, listvar)
# summation
if expr.rhs is None: if expr.rhs is None:
_c_pre.code("%s += *%s;", sumvar, listvar) _c_pre.code("%s += *%s;", sumvar, listvar)
else: else:
@ -1655,10 +1663,11 @@ def _c_accessor_get_expr(expr, field_mapping):
# field mapping for the subexpression needs to include # field mapping for the subexpression needs to include
# the fields of the list-member type # the fields of the list-member type
scoped_field_mapping = field_mapping.copy() scoped_field_mapping = field_mapping.copy()
scoped_field_mapping.update( if not field.type.member.is_simple:
_c_helper_field_mapping( scoped_field_mapping.update(
field.type.member, _c_helper_field_mapping(
[(listvar, '->', field.type.member)])) field.type.member,
[(listvar, '->', field.type.member)]))
# cause pre-code of the subexpression be added right here # cause pre-code of the subexpression be added right here
_c_pre.end() _c_pre.end()
@ -1675,6 +1684,8 @@ def _c_accessor_get_expr(expr, field_mapping):
_c_pre.code("/* sumof end. Result is in %s */", sumvar) _c_pre.code("/* sumof end. Result is in %s */", sumvar)
_c_pre.end() _c_pre.end()
return sumvar return sumvar
elif expr.op == 'listelement-ref':
return '(*xcb_listelement)'
elif expr.op != None: elif expr.op != None:
return ('(' + _c_accessor_get_expr(expr.lhs, field_mapping) + return ('(' + _c_accessor_get_expr(expr.lhs, field_mapping) +
' ' + expr.op + ' ' + ' ' + expr.op + ' ' +