_cplusplus_annoyances = {'class' : '_class',
'new' : '_new',
'delete': '_delete'}
+_c_keywords = {'default' : '_default'}
_hlines = []
_hlevel = 0
_clevel = 0
_ns = None
-# global variable to keep track of serializers
+# global variable to keep track of serializers and switch data types
# due to weird dependencies, I see no way to do this more elegant at the moment
finished_serializers = []
+finished_switch = []
def _h(fmt, *args):
'''
'''
if str in _cplusplus_annoyances:
return _cplusplus_annoyances[str]
+ elif str in _c_keywords:
+ return _c_keywords[str]
else:
return str
if self.reply is not None:
self.c_serialize_name = _n(name + ('reply', 'serialize'))
self.c_unserialize_name = _n(name + ('reply', 'unserialize'))
+ # indicates rare structs where variable size fields are followed fixed size fields
+ self.var_followed_by_fixed_fields = False
# whether a request or reply has a switch field
self.need_aux = False
self.need_serialize = False
if self.is_switch:
self.need_serialize = True
+ self.c_container = 'struct'
for bitcase in self.bitcases:
+ bitcase.c_field_name = _cpp(bitcase.field_name)
_c_type_setup(bitcase.type, bitcase.field_type, ())
- if self.is_container:
+ elif self.is_container:
self.c_container = 'union' if self.is_union else 'struct'
prev_varsized_field = None
field.c_pointer = '*'
field.c_field_const_type = 'const ' + field.c_field_type
self.need_aux = True
+ elif not field.type.fixed_size() and not field.type.is_bitcase:
+ self.need_serialize = True
field.c_iterator_type = _t(field.field_type + ('iterator',)) # xcb_fieldtype_iterator_t
field.c_iterator_name = _n(name + (field.field_name, 'iterator')) # xcb_container_field_iterator
field.c_accessor_name = _n(name + (field.field_name,)) # xcb_container_field
field.c_length_name = _n(name + (field.field_name, 'length')) # xcb_container_field_length
+ # special case - c_field_name ends with _length as well
+ #if field.c_field_name.endswith('length'):
+ # c_field_name = field.c_field_name.rsplit('length', 1)
+ # field.c_field_name = c_field_name[0] + "_length"
field.c_end_name = _n(name + (field.field_name, 'end')) # xcb_container_field_end
field.prev_varsized_field = prev_varsized_field
if field.type.fixed_size():
prev_varsized_offset += field.type.size
+ if prev_varsized_field is not None and not field.type.is_pad and field.wire:
+ if not self.is_union:
+ self.need_serialize = True
+ self.var_followed_by_fixed_fields = True
+# print "WARNING (%s): variable size field %s followed by fixed size field %s" % (
+# self.c_type, prev_varsized_field.field_name, field.field_name)
else:
self.last_varsized_field = field
prev_varsized_field = field
# as switch does never appear at toplevel,
# continue here with type construction
if self.is_switch:
- # special: switch C structs get pointer fields for variable-sized members
- _c_complex(self)
- # FIXME: declare switch (un)packing functions
- _c_accessors(self, name, name)
+ if self.c_type not in finished_switch:
+ finished_switch.append(self.c_type)
+ # special: switch C structs get pointer fields for variable-sized members
+ _c_complex(self)
+ # FIXME: declare switch (un)packing functions
+ _c_accessors(self, name, name)
# FIXME - in case of request/reply, serialize() is not always needed
if self.need_serialize and not self.is_bitcase:
if self.c_serialize_name not in finished_serializers:
+ finished_serializers.append(self.c_serialize_name)
_c_serialize(self)
_c_unserialize(self)
- finished_serializers.append(self.c_serialize_name)
# _c_type_setup()
def get_request_fields(self):
return (param_fields, wire_fields)
# get_request_fields()
-def get_switch_expr_fields(self):
- # get the fields referenced by the switch expression
- def get_expr_fields(expr):
+def get_expr_fields(self):
+ # get the fields referenced by switch or list expression
+ def get_expr_field_names(expr):
if expr.op is None:
if expr.lenfield_name is not None:
return [expr.lenfield_name]
+ else:
+ # constant value expr
+ return []
else:
if expr.op == '~':
- return get_expr_fields(expr.rhs)
+ return get_expr_field_names(expr.rhs)
elif expr.op == 'popcount':
- return get_expr_fields(expr.rhs)
+ return get_expr_field_names(expr.rhs)
elif expr.op == 'sumof':
return [expr.lenfield_name]
elif expr.op == 'enumref':
return []
- else:
- return get_expr_fields(expr.lhs) + get_expr_fields(expr.rhs)
- # get_expr_fields()
+ else:
+ return get_expr_field_names(expr.lhs) + get_expr_field_names(expr.rhs)
+ # get_expr_field_names()
# resolve the field names with the parent structure(s)
- unresolved_fields = get_expr_fields(self.expr)
+ unresolved_fields = get_expr_field_names(self.expr)
+ if unresolved_fields is None:
+ return []
expr_fields = dict.fromkeys(unresolved_fields)
for p in reversed(self.parent):
parent_fields = dict((f.field_name, f) for f in p.fields)
break
if None in expr_fields.values():
- raise Exception("could not resolve all fields for <switch> %s" % self.name)
+ raise Exception("could not resolve all fields for %s" % self.name)
params = expr_fields.values()
return params
-# get_switch_expr_fields()
-
+# get_expr_fields()
+
+def resolve_fields(anchestor, complex_obj=None):
+ """find fields referenced by anchestor or descendents with external scope"""
+ expr_fields = []
+ unresolved = []
+ all_fields = []
+ if complex_obj is None:
+ complex_obj = anchestor
+ for field in complex_obj.fields:
+ all_fields.append(field)
+ if field.type.is_switch or field.type.is_list:
+ expr_fields += get_expr_fields(field.type)
+ if field.type.is_container:
+ expr_fields += resolve_fields(anchestor, field.type)
+ # try to resolve expr fields
+ for e in expr_fields:
+ if e not in all_fields:
+ unresolved.append(e)
+ return unresolved
+
def get_serialize_params(context, self, buffer_var='_buffer', aux_var='_aux'):
+ def add_param(params, param):
+ if param not in params:
+ params.append(param)
+
param_fields, wire_fields = get_request_fields(self)
if self.is_switch:
- param_fields = get_switch_expr_fields(self)
+ param_fields = get_expr_fields(self)
# _serialize function parameters
+ # cannot use set() for params, as series is important
+ params = []
if 'serialize' == context:
- params = [('void', '**', buffer_var)]
+ params.append(('void', '**', buffer_var))
elif 'unserialize' == context:
- params = [('const void', '*', buffer_var)]
+ params.append(('const void', '*', buffer_var))
+
+ # look for special cases
+ unresolved_fields = resolve_fields(self)
+ for f in unresolved_fields:
+ add_param(params, (f.c_field_type, '', f.c_field_name))
# make sure all required length fields are present
for p in param_fields:
if p.visible and not p.wire and not p.auto:
typespec = p.c_field_type
pointerspec = ''
- params.append((typespec, pointerspec, p.c_field_name))
+ add_param(params, (typespec, pointerspec, p.c_field_name))
# parameter fields if any
if self.is_switch:
- for p in get_switch_expr_fields(self):
+ for p in get_expr_fields(self):
typespec = p.c_field_const_type
- pointerspec = p.c_pointer
- params.append((typespec, pointerspec, p.c_field_name))
+ pointerspec = p.c_pointer
+ add_param(params, (typespec, pointerspec, p.c_field_name))
# aux argument - structure to be serialized
if 'serialize' == context:
- params.append(('const %s' % self.c_type, '*', aux_var))
+ add_param(params, ('const %s' % self.c_type, '*', aux_var))
elif 'unserialize' == context and self.is_switch:
- params.append(('%s' % self.c_type, '*', aux_var))
+ add_param(params, ('%s' % self.c_type, '*', aux_var))
if not self.is_switch and 'serialize' == context:
for p in param_fields:
if not p.type.fixed_size():
- params.append((p.c_field_const_type, p.c_pointer, p.c_field_name))
+ add_param(params, (p.c_field_const_type, '*', p.c_field_name))
return (param_fields, wire_fields, params)
# get_serialize_params()
-def _c_field_mapping(context, complex_type):
- def get_prefix(field):
- prefix = ''
- if context in ('serialize', 'unserialize'):
- if field.type.fixed_size() or complex_type.is_switch:
- prefix = '_aux->'
- else:
- raise Exception("unknown context '%s' in c_field_mapping" % context)
- return prefix
+def _c_serialize_helper_prefix(prefix):
+ # prefix is a list of (field_name, anchestor object) tuples
+ # concatenate field names
+ prefix_str = ''
+ for name, obj in prefix:
+ prefix_str += name
+ prefix_str += '.' if (obj.is_bitcase and obj.has_name) else '->'
+ lenfield_prefix = '' if prefix_str.find('_aux')==0 else "_aux"
+ if prefix_str != '':
+ if lenfield_prefix != '':
+ lenfield_prefix += '->'
+ lenfield_prefix += prefix_str
+ return (prefix_str, lenfield_prefix)
+# _c_serialize_helper_prefix
+
+def _c_field_mapping(context, complex_type, prefix):
+ def get_prefix(field, prefix):
+ prefix_str, lenfield_prefix = _c_serialize_helper_prefix(prefix)
+ if prefix_str == '':
+ if context in ('serialize', 'unserialize'):
+ if field.type.fixed_size() or complex_type.is_switch:
+ prefix_str = '_aux->'
+ else:
+ raise Exception("unknown context '%s' in c_field_mapping" % context)
+ return prefix_str
# get_prefix()
- def get_field_name(fields, complex_type, prefix=''):
+ def get_field_name(fields, complex_type, prefix):
for f in complex_type.fields:
- if '' == prefix:
- prefix = get_prefix(f)
+ prefix_str = get_prefix(f, prefix)
- fname = "%s%s" % (prefix, f.c_field_name)
+ fname = "%s%s" % (prefix_str, f.c_field_name)
if fields.has_key(f.field_name):
continue
+ # FIXME
raise Exception("field name %s has been registered before" % f.field_name)
fields[f.field_name] = (fname, f)
if f.type.is_container:
- new_prefix = "%s%s" % (prefix, f.c_field_name)
- new_prefix += "." if f.type.is_switch else "->"
- get_field_name(fields, f.type, new_prefix)
+ get_field_name(fields, f.type, prefix+[(f.c_field_name, f.type)])
# get_field_name()
# dict(field_name : (c_field_name, field))
fields = {}
- get_field_name(fields, complex_type)
+ get_field_name(fields, complex_type, prefix)
# switch: get the fields referenced by the switch expr as well
# these may not belong to any structure
return fields
# _c_field_mapping()
-def _c_serialize_helper_prefix(prefix):
- prefix_str = prefix
- lenfield_prefix = "_aux"
- if prefix != '':
- prefix_str += "->"
- lenfield_prefix += "->%s" % prefix
- return (prefix_str, lenfield_prefix)
-# _c_serialize_helper_prefix
-
def _c_serialize_helper_insert_padding(context, code_lines, space):
code_lines.append('%s xcb_buffer_len += xcb_block_len;' % space)
code_lines.append('%s /* padding */' % space)
code_lines, temp_vars,
space, prefix):
count = 0
- prefix_str, lenfield_prefix = _c_serialize_helper_prefix(prefix)
+ switch_prefix = prefix + [(complex_name, self)]
+ prefix_str, lenfield_prefix = _c_serialize_helper_prefix(switch_prefix)
switch_expr = _c_accessor_get_expr(self.expr)
-
+
for b in self.bitcases:
- bitcase_expr = _c_accessor_get_expr(b.type.expr, prefix)
+ bitcase_expr = _c_accessor_get_expr(b.type.expr, prefix_str)
code_lines.append(' if(%s & %s) {' % (switch_expr, bitcase_expr))
-
+ b_prefix = switch_prefix
+ if b.type.has_name:
+ b_prefix = switch_prefix + [(b.c_field_name, b.type)]
_c_serialize_helper_fields(context, b.type,
code_lines, temp_vars,
- space="%s " % space,
- prefix="%s%s" % (prefix_str, complex_name),
+ "%s " % space,
+ b_prefix,
is_bitcase = True)
code_lines.append(' }')
return count
# _c_serialize_helper_switch
-def _c_serialize_helper_switch_field(self, field):
+def _c_serialize_helper_switch_field(context, self, field, c_switch_variable, prefix):
# switch is handled by this function as a special case
- args = get_switch_expr_fields(field.type)
- field_mapping = _c_field_mapping('unserialize', self)
+ param_fields, wire_fields, params = get_serialize_params(context, self)
+ args = get_expr_fields(field.type)
+ field_mapping = _c_field_mapping(context, self, prefix)
+
+ # determine which params to pass to _unserialize() and their prefixes
+ switch_len_fields = resolve_fields(self, field.type)
+ bitcase_unresolved = resolve_fields(self, self)
+ if len(bitcase_unresolved) != 0:
+ raise Exception('unresolved fields within bitcase is not supported at this point')
c_field_names = ''
+ for a in switch_len_fields:
+ c_field_names += "%s, " % field_mapping[a.c_field_name][0]
for a in args:
- c_field_names += "%s, " % field_mapping[a.field_name][0]
- switch_field_name = field_mapping[field.field_name][0]
+ c_field_names += "%s, " % field_mapping[a.c_field_name][0]
+# switch_field_name = field_mapping[field.field_name][0]
+ # call _unserialize() to determine the actual size
length = "%s(xcb_tmp, %s&%s)" % (field.type.c_unserialize_name,
- c_field_names, switch_field_name)
+ c_field_names, c_switch_variable) #switch_field_name)
return length
# _c_serialize_helper_switch_field()
param_names = [p[2] for p in params]
# look if the list's lenfield is a struct member or a function argument
- # special case: if the list has a length field, its name will returned
+ # special case: if the list has a length field, its name will be returned
# unchanged by calling c_accessor_get_length(expr)
if expr.lenfield_name == _c_accessor_get_length(expr):
if expr.lenfield_name in param_names:
# the length field appears as separate argument in unserialize,
# so no need for a prefix
lenfield_prefix = ''
- list_length = _c_accessor_get_expr(expr, lenfield_prefix)
+ sep = '.' if (self.is_bitcase and self.has_name) else '->'
+ list_length = _c_accessor_get_expr(expr, lenfield_prefix, sep)
# default: list with fixed size elements
length = '%s * sizeof(%s)' % (list_length, field.type.member.c_wiretype)
if field.type.size is None:
length = ''
if 'unserialize' == context:
- temp_vars.add(' unsigned int i;')
- temp_vars.add(' unsigned int xcb_tmp_len;')
+ int_i = ' unsigned int i;'
+ xcb_tmp_len = ' unsigned int xcb_tmp_len;'
+ if int_i not in temp_vars:
+ temp_vars.append(int_i)
+ if xcb_tmp_len not in temp_vars:
+ temp_vars.append(xcb_tmp_len)
code_lines.append("%s for(i=0; i<%s; i++) {" % (space, list_length))
code_lines.append("%s xcb_tmp_len = %s(xcb_tmp);" %
(space, field.type.c_unserialize_name))
elif 'serialize' == context:
code_lines.append('%s xcb_parts[xcb_parts_idx].iov_len = 0;' % space)
code_lines.append('%s xcb_tmp = (char *) %s%s;' % (space, prefix_str, field.c_field_name))
- code_lines.append('%s for(i=0; i<%s; i++) {'
- % (space, _c_accessor_get_expr(expr, lenfield_prefix)))
+ code_lines.append('%s for(i=0; i<%s; i++) { '
+ % (space, _c_accessor_get_expr(expr, lenfield_prefix, sep)))
code_lines.append('%s xcb_block_len = %s(xcb_tmp);' % (space, field.type.c_unserialize_name))
code_lines.append('%s xcb_parts[xcb_parts_idx].iov_len += xcb_block_len;' % space)
code_lines.append('%s }' % space)
def _c_serialize_helper_fields_fixed_size(context, self, field,
code_lines, temp_vars,
space, prefix):
- prefix_str, lenfield_prefix = _c_serialize_helper_prefix(prefix)
code_lines.append('%s /* %s.%s */' % (space, self.c_type, field.c_field_name))
+ prefix_str, lenfield_prefix = _c_serialize_helper_prefix(prefix)
length = "sizeof(%s)" % field.c_field_type
if 'unserialize' == context:
- value = ' _aux->%s = *(%s *)xcb_tmp;' % (field.c_field_name, field.c_field_type)
+ value = ' %s%s = *(%s *)xcb_tmp;' % (prefix_str, field.c_field_name, field.c_field_type)
+ if field.type.is_pad and field.type.nmemb > 1:
+ value = ''
+ for i in range(field.type.nmemb):
+ code_lines.append('%s %s%s[%d] = *(%s *)xcb_tmp;' %
+ (space, prefix_str, field.c_field_name, i, field.c_field_type))
+ length += " * %d" % field.type.nmemb
# FIXME? - lists
if field.type.is_list:
raise Exception('list with fixed number of elemens unhandled in _unserialize()')
if field.type.c_type is None:
raise Exception("type for field '%s' (expression '%s') unkown" %
(field.field_name, _c_accessor_get_expr(field.type.expr)))
- temp_vars.add(' %s xcb_expr_%s = %s;' % (field.type.c_type, field.field_name,
- _c_accessor_get_expr(field.type.expr, prefix)))
+ temp_vars.append(' %s xcb_expr_%s = %s;' % (field.type.c_type, field.field_name,
+ _c_accessor_get_expr(field.type.expr, prefix)))
value += "&xcb_expr_%s;" % field.field_name
elif field.type.is_pad:
if field.type.nmemb == 1:
value += "&xcb_pad;"
else:
+ # FIXME - possible segmentation fault!!
value = ' memset(xcb_parts[xcb_parts_idx].iov_base, 0, %d);' % field.type.nmemb
length += "*%d" % field.type.nmemb
if 'unserialize' == context:
value = ''
elif 'serialize' == context:
- value = ' xcb_parts[xcb_parts_idx].iov_base = (char *) %s%s;' % (prefix_str, field.c_field_name)
+ address_of = '&' if (self.is_bitcase and self.has_name) else ''
+ value = ' xcb_parts[xcb_parts_idx].iov_base = (char *) %s%s%s;' % (address_of, prefix_str, field.c_field_name)
length = ''
prefix_str, lenfield_prefix = _c_serialize_helper_prefix(prefix)
code_lines, temp_vars,
space, prefix)
elif field.type.is_switch:
- length = _c_serialize_helper_switch_field(self, field)
+ prev = filter(lambda x: x.find('xcb_switch_field'), temp_vars)
+ var_name = 'xcb_switch_field%d' % len(prev)
+ temp_vars.append(' %s %s;' % (field.type.c_type, var_name))
+ length = _c_serialize_helper_switch_field(context, self, field, var_name, prefix)
else:
length = "%s(xcb_tmp)" % (field.type.c_unserialize_name)
space, prefix, is_bitcase):
count = 0
need_padding = False
- prefix_str, lenfield_prefix = _c_serialize_helper_prefix(prefix)
for field in self.fields:
if not ((field.wire and not field.auto) or field.visible):
# switch/bitcase: fixed size fields must be considered explicitly
if field.type.fixed_size():
- if is_bitcase:
+ if self.is_bitcase:
value, length = _c_serialize_helper_fields_fixed_size(context, self, field,
code_lines, temp_vars,
space, prefix)
def _c_serialize_helper(context, complex_type,
code_lines, temp_vars,
- space='', prefix=''):
+ space='', prefix=[]):
count = 0
if hasattr(complex_type, 'type'):
self = complex_type.type
maxtypelen = max(maxtypelen, len(p[0]) + len(p[1]))
# write to .c/.h
- for p in range(len(params)):
+ for idx, p in enumerate(params):
line = ""
- typespec, pointerspec, field_name = params[p]
+ typespec, pointerspec, field_name = p
indent = ' '*(len(self.c_serialize_name)+2)
# p==0: function declaration
- if 0==p:
+ if 0==idx:
line = "%s (" % self.c_serialize_name
indent = ''
spacing = ' '*(maxtypelen-len(typespec)-len(pointerspec))
line += "%s%s%s %s%s /**< */" % (indent, typespec, spacing, pointerspec, field_name)
- if p < len(params)-1:
+ if idx < len(params)-1:
_hc("%s," % line)
else:
_h("%s);" % line)
_c(' unsigned int xcb_buffer_len = 0;')
if variable_size_fields > 0:
code_lines = []
- temp_vars = set()
+ temp_vars = []
count =_c_serialize_helper('serialize', self,
code_lines, temp_vars)
# update variable size fields
variable_size_fields = count
- temp_vars.add(' unsigned int xcb_pad = 0;')
- temp_vars.add(' char xcb_pad0[3] = {0, 0, 0};')
- temp_vars.add(' struct iovec xcb_parts[%d];' % (count+1))
- temp_vars.add(' unsigned int xcb_parts_idx = 0;')
- temp_vars.add(' unsigned int xcb_block_len = 0;')
- temp_vars.add(' unsigned int i;')
- temp_vars.add(' char *xcb_tmp;')
+ temp_vars.append(' unsigned int xcb_pad = 0;')
+ temp_vars.append(' char xcb_pad0[3] = {0, 0, 0};')
+ temp_vars.append(' struct iovec xcb_parts[%d];' % (count+1))
+ temp_vars.append(' unsigned int xcb_parts_idx = 0;')
+ temp_vars.append(' unsigned int xcb_block_len = 0;')
+ temp_vars.append(' unsigned int i;')
+ temp_vars.append(' char *xcb_tmp;')
for t in temp_vars:
_c(t)
maxtypelen = max(maxtypelen, len(p[0]) + len(p[1]))
# write to .c/.h
- for p in range(len(params)):
+ for idx, p in enumerate(params):
line = ""
- typespec, pointerspec, field_name = params[p]
+ typespec, pointerspec, field_name = p
indent = ' '*(len(self.c_unserialize_name)+2)
# p==0: function declaration
- if 0==p:
+ if 0==idx:
line = "%s (" % self.c_unserialize_name
indent = ''
spacing = ' '*(maxtypelen-len(typespec)-len(pointerspec))
line += "%s%s%s %s%s /**< */" % (indent, typespec, spacing, pointerspec, field_name)
- if p < len(params)-1:
+ if idx < len(params)-1:
_hc("%s," % line)
else:
_h("%s);" % line)
_c(' unsigned int xcb_pad = 0;')
code_lines = []
- temp_vars = set()
+ temp_vars = []
_c_serialize_helper('unserialize', self,
code_lines, temp_vars)
for t in temp_vars:
'''
if field.type.is_container:
accum = field.c_accessor_name + '(' + accum + ')'
+ if field.type.fixed_size():
+ print "iterator_get_end()", accum, field.c_field_name
# XXX there could be fixed-length fields at the end
return _c_iterator_get_end(field.type.last_varsized_field, accum)
if field.type.is_list:
_c(' return ret;')
_c('}')
-def _c_accessor_get_length(expr, prefix=''):
+def _c_accessor_get_length(expr, prefix='', sep='->'):
'''
Figures out what C code is needed to get a length field.
For fields that follow a variable-length field, use the accessor.
Otherwise, just reference the structure field directly.
'''
- prefarrow = '' if prefix == '' else prefix + '->'
-
+ prefarrow = '' if prefix == '' else prefix + sep
+
if expr.lenfield != None and expr.lenfield.prev_varsized_field != None:
- return expr.lenfield.c_accessor_name + '(' + prefix + ')'
+ # special case: variable and fixed size fields are intermixed
+ retval = expr.lenfield.c_accessor_name + '(' + prefix + ')'
+ if prefix in ('', '_aux'):
+ prefix_str = '' if prefix=='' else '%s' % (prefarrow)
+ retval = '%s%s' % (prefix_str, expr.lenfield_name)
+ return retval
elif expr.lenfield_name != None:
- return prefarrow + expr.lenfield_name
+ if prefix.endswith(sep):
+ return prefix + expr.lenfield_name
+ else:
+ return prefarrow + expr.lenfield_name
else:
return str(expr.nmemb)
-def _c_accessor_get_expr(expr, prefix=''):
+def _c_accessor_get_expr(expr, prefix='', sep='->'):
'''
Figures out what C code is needed to get the length of a list field.
Recurses for math operations.
Returns bitcount for value-mask fields.
Otherwise, uses the value of the length field.
'''
- lenexp = _c_accessor_get_length(expr, prefix)
+ lenexp = _c_accessor_get_length(expr, prefix, sep)
if expr.op == '~':
- return '(' + '~' + _c_accessor_get_expr(expr.rhs, prefix) + ')'
+ return '(' + '~' + _c_accessor_get_expr(expr.rhs, prefix, sep) + ')'
elif expr.op == 'popcount':
- return 'xcb_popcount(' + _c_accessor_get_expr(expr.rhs, prefix) + ')'
+ return 'xcb_popcount(' + _c_accessor_get_expr(expr.rhs, prefix, sep) + ')'
elif expr.op == 'enumref':
enum_name = expr.lenfield_type.name
constant_name = expr.lenfield_name
break
if field is None:
raise Exception("list field '%s' referenced by sumof not found" % expr.lenfield_name)
- if prefix != '':
- prefix = "%s->" % prefix
+ if prefix != '' and not prefix.endswith(sep):
+ prefix += sep
list_name = "%s%s" % (prefix, field.c_field_name)
c_length_func = "%s(%s%s)" % (field.c_length_name, prefix, field.c_field_name)
+ # FIXME
+ c_length_func = _c_accessor_get_expr(field.type.expr, prefix='', sep='')
return 'xcb_sumof(%s, %s)' % (list_name, c_length_func)
elif expr.op != None:
- return '(' + _c_accessor_get_expr(expr.lhs, prefix) + ' ' + expr.op + ' ' + _c_accessor_get_expr(expr.rhs, prefix) + ')'
+ return '(' + _c_accessor_get_expr(expr.lhs, prefix, sep) + ' ' + expr.op + ' ' + _c_accessor_get_expr(expr.rhs, prefix, sep) + ')'
elif expr.bitfield:
return 'xcb_popcount(' + lenexp + ')'
else:
- return lenexp
+ return lenexp + '/* bla */'
def _c_accessors_field(self, field):
'''
_h('%s (const %s *R /**< */);', field.c_accessor_name, self.c_type)
_c('%s (const %s *R /**< */)', field.c_accessor_name, self.c_type)
_c('{')
- _c(' xcb_generic_iterator_t prev = %s;', _c_iterator_get_end(field.prev_varsized_field, 'R'))
- _c(' return * (%s *) ((char *) prev.data + XCB_TYPE_PAD(%s, prev.index) + %d);',
- field.c_field_type, field.first_field_after_varsized.type.c_type, field.prev_varsized_offset)
+ if field.prev_varsized_field is None:
+ _c(' return (%s *) (R + 1);', field.c_field_type)
+ else:
+ _c(' xcb_generic_iterator_t prev = %s;', _c_iterator_get_end(field.prev_varsized_field, 'R'))
+ _c(' return * (%s *) ((char *) prev.data + XCB_TYPE_PAD(%s, prev.index) + %d);',
+ field.c_field_type, field.first_field_after_varsized.type.c_type, field.prev_varsized_offset)
_c('}')
else:
_hc('')
_h('%s (const %s *R /**< */);', field.c_accessor_name, self.c_type)
_c('%s (const %s *R /**< */)', field.c_accessor_name, self.c_type)
_c('{')
- _c(' xcb_generic_iterator_t prev = %s;', _c_iterator_get_end(field.prev_varsized_field, 'R'))
- _c(' return (%s *) ((char *) prev.data + XCB_TYPE_PAD(%s, prev.index) + %d);', field.c_field_type, field.first_field_after_varsized.type.c_type, field.prev_varsized_offset)
+ if field.prev_varsized_field is None:
+ _c(' return (%s *) (R + 1);', field.c_field_type)
+ else:
+ _c(' xcb_generic_iterator_t prev = %s;', _c_iterator_get_end(field.prev_varsized_field, 'R'))
+ _c(' return (%s *) ((char *) prev.data + XCB_TYPE_PAD(%s, prev.index) + %d);',
+ field.c_field_type, field.first_field_after_varsized.type.c_type, field.prev_varsized_offset)
_c('}')
def _c_accessors_list(self, field):
_c('%s (const %s *R /**< */)', field.c_accessor_name, self.c_type)
_c('{')
- if field.prev_varsized_field == None:
+ if field.prev_varsized_field is None:
_c(' return (%s *) (R + 1);', field.c_field_type)
else:
_c(' xcb_generic_iterator_t prev = %s;', _c_iterator_get_end(field.prev_varsized_field, 'R'))
Declares the accessor functions for the fields of a structure.
'''
for field in self.fields:
+ # no accessors for switch -
+ # switch always needs to be unserialized explicitly
+ if self.is_switch:
+ continue
if field.type.is_list and not field.type.fixed_size():
_c_accessors_list(self, field)
- elif field.prev_varsized_field != None:
+ elif field.prev_varsized_field != None or not field.type.fixed_size():
_c_accessors_field(self, field)
def c_simple(self, name):
length += 1
maxtypelen = max(maxtypelen, length)
- for field in struct_fields:
+ def _c_complex_field(self, field, space=''):
if (field.type.fixed_size() or
# in case of switch with switch children, don't make the field a pointer
# necessary for unserialize to work
(self.is_switch and field.type.is_switch)):
spacing = ' ' * (maxtypelen - len(field.c_field_type))
- _h(' %s%s %s%s; /**< */', field.c_field_type, spacing, field.c_field_name, field.c_subscript)
-
+ _h('%s %s%s %s%s; /**< */', space, field.c_field_type, spacing, field.c_field_name, field.c_subscript)
else:
spacing = ' ' * (maxtypelen - (len(field.c_field_type) + 1))
- _h(' %s%s *%s%s; /**< */', field.c_field_type, spacing, field.c_field_name, field.c_subscript)
+ _h('%s %s%s *%s%s; /**< */', space, field.c_field_type, spacing, field.c_field_name, field.c_subscript)
+
+ if not self.is_switch:
+ for field in struct_fields:
+ _c_complex_field(self, field)
+ else:
+ for b in self.bitcases:
+ space = ''
+ if b.type.has_name:
+ _h(' struct _%s {', b.c_field_name)
+ space = ' '
+ for field in b.type.fields:
+ _c_complex_field(self, field, space)
+ if b.type.has_name:
+ _h(' } %s;', b.c_field_name)
_h('} %s;', self.c_type)
for field in param_fields:
count = count - 1
c_field_const_type = field.c_field_const_type
+ c_pointer = field.c_pointer
if field.type.need_serialize and not aux:
c_field_const_type = "const void"
+ c_pointer = '*'
spacing = ' ' * (maxtypelen - len(c_field_const_type))
comma = ',' if count else ');'
_h('%s%s%s %s%s /**< */%s', func_spacing, c_field_const_type,
- spacing, field.c_pointer, field.c_field_name, comma)
+ spacing, c_pointer, field.c_field_name, comma)
comma = ',' if count else ')'
_c('%s%s%s %s%s /**< */%s', func_spacing, c_field_const_type,
- spacing, field.c_pointer, field.c_field_name, comma)
+ spacing, c_pointer, field.c_field_name, comma)
count = 2
+ if self.var_followed_by_fixed_fields:
+ count += len(wire_fields)*2
for field in param_fields:
if not field.type.fixed_size():
count = count + 2
_c(' struct iovec xcb_parts[%d];', count + 2)
_c(' %s xcb_ret;', func_cookie)
- _c(' %s xcb_out;', self.c_type)
+ if not self.var_followed_by_fixed_fields:
+ _c(' %s xcb_out;', self.c_type)
+
for idx, f in enumerate(serial_fields):
if not aux:
_c(' %s xcb_aux%d;' % (f.type.c_type, idx))
else:
_c(' void *xcb_aux%d = 0;' % (idx))
_c(' ')
- _c(' printf("in function %s\\n");' % func_name)
+# _c(' printf("in function %s\\n");' % func_name)
# fixed size fields
- for field in wire_fields:
- if field.type.fixed_size():
- if field.type.is_expr:
- _c(' xcb_out.%s = %s;', field.c_field_name, _c_accessor_get_expr(field.type.expr))
- elif field.type.is_pad:
- if field.type.nmemb == 1:
- _c(' xcb_out.%s = 0;', field.c_field_name)
- else:
- _c(' memset(xcb_out.%s, 0, %d);', field.c_field_name, field.type.nmemb)
- else:
- if field.type.nmemb == 1:
- _c(' xcb_out.%s = %s;', field.c_field_name, field.c_field_name)
+ if not self.var_followed_by_fixed_fields:
+ for field in wire_fields:
+ if field.type.fixed_size():
+ if field.type.is_expr:
+ _c(' xcb_out.%s = %s;', field.c_field_name, _c_accessor_get_expr(field.type.expr))
+ elif field.type.is_pad:
+ if field.type.nmemb == 1:
+ _c(' xcb_out.%s = 0;', field.c_field_name)
+ else:
+ _c(' memset(xcb_out.%s, 0, %d);', field.c_field_name, field.type.nmemb)
else:
- _c(' memcpy(xcb_out.%s, %s, %d);', field.c_field_name, field.c_field_name, field.type.nmemb)
+ if field.type.nmemb == 1:
+ _c(' xcb_out.%s = %s;', field.c_field_name, field.c_field_name)
+ else:
+ _c(' memcpy(xcb_out.%s, %s, %d);', field.c_field_name, field.c_field_name, field.type.nmemb)
- _c(' ')
- _c(' xcb_parts[2].iov_base = (char *) &xcb_out;')
- _c(' xcb_parts[2].iov_len = sizeof(xcb_out);')
- _c(' xcb_parts[3].iov_base = 0;')
- _c(' xcb_parts[3].iov_len = -xcb_parts[2].iov_len & 3;')
+ _c(' ')
+ _c(' xcb_parts[2].iov_base = (char *) &xcb_out;')
+ _c(' xcb_parts[2].iov_len = sizeof(xcb_out);')
+ _c(' xcb_parts[3].iov_base = 0;')
+ _c(' xcb_parts[3].iov_len = -xcb_parts[2].iov_len & 3;')
# calls in order to free dyn. all. memory
free_calls = []
- count = 4
- for field in param_fields:
+ if not self.var_followed_by_fixed_fields:
+ count = 4
+ else:
+ count = 2
+ var_size_fields = param_fields
+ if self.var_followed_by_fixed_fields:
+ var_size_fields = wire_fields + param_fields
+ for field in var_size_fields:
+ if field.type.fixed_size and self.var_followed_by_fixed_fields:
+ _c(' xcb_parts[%d].iov_base = (char *) &%s;', count, field.c_field_name)
+ _c(' xcb_parts[%d].iov_len = sizeof(%s);', count, field.type.c_type)
+ count += 1
if not field.type.fixed_size():
+ # default: simple cast to char *
if not field.type.need_serialize:
_c(' xcb_parts[%d].iov_base = (char *) %s;', count, field.c_field_name)
+ if field.type.is_list:
+ _c(' xcb_parts[%d].iov_len = %s * sizeof(%s);', count,
+ _c_accessor_get_expr(field.type.expr), field.type.member.c_wiretype)
+ else:
+ # not supposed to happen
+ raise Exception("unhandled variable size field %s" % field.c_field_name)
+ #_c('/* eeeeeeeeeee */')
else:
if not aux:
_c(' xcb_parts[%d].iov_base = (char *) %s;', count, field.c_field_name)
free_calls.append(' free(xcb_aux%d);' % idx)
else:
_c(' %s (%s);', field.type.c_unserialize_name, serialize_args)
- if field.type.is_list:
- _c(' xcb_parts[%d].iov_len = %s * sizeof(%s);', count,
- _c_accessor_get_expr(field.type.expr), field.type.member.c_wiretype)
- elif not field.type.need_serialize:
- # FIXME - _serialize()
- _c(' xcb_parts[%d].iov_len = %s * sizeof(%s);',
- count, 'Uh oh', field.type.c_wiretype)
+
count += 1
if not field.type.need_serialize:
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