diff options
Diffstat (limited to 'src/c_client.py')
| -rw-r--r-- | src/c_client.py | 84 |
1 files changed, 62 insertions, 22 deletions
diff --git a/src/c_client.py b/src/c_client.py index ecfebf5..3230a6f 100644 --- a/src/c_client.py +++ b/src/c_client.py @@ -471,7 +471,8 @@ def _c_type_setup(self, name, postfix): field.first_field_after_varsized = first_field_after_varsized if field.type.fixed_size(): - prev_varsized_offset += field.type.size + if field.wire: + prev_varsized_offset += field.type.size # special case: intermixed fixed and variable size fields if prev_varsized_field is not None and not field.type.is_pad and field.wire: if not self.is_union: @@ -649,7 +650,7 @@ 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.op is None or expr.op == 'calculate_len': if expr.lenfield_name is not None: return [expr.lenfield_name] else: @@ -726,15 +727,17 @@ def resolve_expr_fields_list(self, parents): all_fields = [] expr_fields = get_expr_fields(self) unresolved = [] - + dont_resolve_this = '' for complex_obj in parents: for field in complex_obj.fields: + if field.type.is_list and field.type.expr.op == 'calculate_len': + dont_resolve_this = field.type.expr.lenfield_name if field.wire: all_fields.append(field) # try to resolve expr fields for e in expr_fields: - if e not in all_fields and e not in unresolved: + if e not in all_fields and e not in unresolved and e.field_name != dont_resolve_this: unresolved.append(e) return unresolved @@ -775,7 +778,9 @@ def get_serialize_params(context, self, buffer_var='_buffer', aux_var='_aux'): # _serialize()/_unserialize()/_unpack() function parameters # note: don't use set() for params, it is unsorted params = [] - + parameter = '' + if self.is_list: + parameter = self.type.expr.lenfield_name # 1. the parameter for the void * buffer if 'serialize' == context: params.append(('void', '**', buffer_var)) @@ -795,7 +800,7 @@ def get_serialize_params(context, self, buffer_var='_buffer', aux_var='_aux'): pointerspec = p.c_pointer add_param(params, (typespec, pointerspec, p.c_field_name)) else: - if p.visible and not p.wire and not p.auto: + if p.visible and not p.wire and not p.auto and p.field_name != parameter: typespec = p.c_field_type pointerspec = '' add_param(params, (typespec, pointerspec, p.c_field_name)) @@ -984,8 +989,10 @@ def _c_serialize_helper_list_field(context, self, field, unresolved = [x for x in unresolved if x not in field_mapping] if len(unresolved)>0: raise Exception('could not resolve the length fields required for list %s' % field.c_field_name) - - list_length = _c_accessor_get_expr(expr, field_mapping) + if expr.op == 'calculate_len': + list_length = field.type.expr.lenfield_name + else: + list_length = _c_accessor_get_expr(expr, field_mapping) # default: list with fixed size elements length = '%s * sizeof(%s)' % (list_length, field.type.member.c_wiretype) @@ -1723,7 +1730,7 @@ def _c_accessor_get_expr(expr, field_mapping): return sumvar elif expr.op == 'listelement-ref': return '(*xcb_listelement)' - elif expr.op != None: + elif expr.op != None and expr.op != 'calculate_len': return ('(' + _c_accessor_get_expr(expr.lhs, field_mapping) + ' ' + expr.op + ' ' + _c_accessor_get_expr(expr.rhs, field_mapping) + ')') @@ -1913,8 +1920,34 @@ def _c_accessors_list(self, field): _h('%s (const %s *R%s);', field.c_length_name, c_type, add_param_str) _c('%s (const %s *R%s)', field.c_length_name, c_type, add_param_str) _c('{') - length = _c_accessor_get_expr(field.type.expr, fields) - _c(' return %s;', length) + + def get_length(): + if field.type.expr.op == 'calculate_len': + if field.type.member.fixed_size(): + if field.prev_varsized_field is None: + # the list is directly after the fixed size part of the + # request: simply subtract the size of the fixed-size part + # from the request size and divide that by the member size + return '(((R->length * 4) - sizeof('+ self.c_type + '))/'+'sizeof('+field.type.member.c_wiretype+'))' + else: + # use the accessor to get the start of the list, then + # compute the length of it by subtracting it from + # the adress of the first byte after the end of the + # request + after_end_of_request = '(((char*)R) + R->length * 4)' + start_of_list = '%s(R)' % (field.c_accessor_name) + bytesize_of_list = '%s - (char*)(%s)' % (after_end_of_request, start_of_list) + return '(%s) / sizeof(%s)' % (bytesize_of_list, field.type.member.c_wiretype) + else: + raise Exception( + "lengthless lists with varsized members are not supported. Fieldname '%s'" + % + (field.c_field_name) + ); + else: + return _c_accessor_get_expr(field.type.expr, fields) + + _c(' return %s;', get_length()) _c('}') if field.type.member.is_simple: @@ -1935,10 +1968,10 @@ def _c_accessors_list(self, field): param = 'R' if switch_obj is None else 'S' if switch_obj is not None: _c(' i.data = %s + %s;', fields[field.c_field_name][0], - _c_accessor_get_expr(field.type.expr, fields)) + get_length()) elif field.prev_varsized_field == None: _c(' i.data = ((%s *) (R + 1)) + (%s);', field.type.c_wiretype, - _c_accessor_get_expr(field.type.expr, fields)) + get_length()) else: (prev_varsized_field, align_pad) = get_align_pad(field) @@ -1950,7 +1983,7 @@ def _c_accessors_list(self, field): _c_iterator_get_end(prev_varsized_field, 'R')) _c(' i.data = ((%s *) ((char*) prev.data + %s)) + (%s);', field.type.c_wiretype, align_pad, - _c_accessor_get_expr(field.type.expr, fields)) + get_length()) _c(' i.rem = 0;') _c(' i.index = (char *) i.data - (char *) %s;', param) @@ -1961,7 +1994,6 @@ def _c_accessors_list(self, field): _hc('') _hc('%s', field.c_iterator_type) spacing = ' '*(len(field.c_iterator_name)+2) - add_param_str = additional_params_to_str(spacing) if switch_obj is not None: _hc('%s (const %s *R,', field.c_iterator_name, R_obj.c_type) _h('%sconst %s *S%s);', spacing, S_obj.c_type, add_param_str) @@ -1973,7 +2005,7 @@ def _c_accessors_list(self, field): _c(' %s i;', field.c_iterator_type) _c_pre.start() - length_expr_str = _c_accessor_get_expr(field.type.expr, fields) + length_expr_str = get_length() if switch_obj is not None: _c_pre.end() @@ -2356,11 +2388,16 @@ def _c_request_helper(self, name, void, regular, aux=False, reply_fds=False): _c(' xcb_parts[%d].iov_base = (char *) %s;', count, field.c_field_name) if field.type.is_list: if field.type.member.fixed_size(): - _c(' xcb_parts[%d].iov_len = %s * sizeof(%s);', count, - _c_accessor_get_expr(field.type.expr, None), - field.type.member.c_wiretype) + if field.type.expr.op == 'calculate_len': + lenfield = field.type.expr.lenfield_name + else: + lenfield = _c_accessor_get_expr(field.type.expr, None) + + _c(' xcb_parts[%d].iov_len = %s * sizeof(%s);', count, lenfield, + field.type.member.c_wiretype) else: list_length = _c_accessor_get_expr(field.type.expr, None) + length = '' _c(" xcb_parts[%d].iov_len = 0;" % count) _c(" xcb_tmp = (char *)%s;", field.c_field_name) @@ -3115,9 +3152,12 @@ def c_request(self, name): if self.c_need_aux: _c_request_helper(self, name, void=True, regular=False, aux=True) _c_request_helper(self, name, void=True, regular=True, aux=True) - if config_server_side: - _c_accessors(self, name, name) - + for field in self.fields: + if not field.type.is_pad and field.wire: + if _c_field_needs_list_accessor(field): + _c_accessors_list(self, field) + elif _c_field_needs_field_accessor(field): + _c_accessors_field(self, field) # We generate the manpage afterwards because _c_type_setup has been called. # TODO: what about aux helpers? _man_request(self, name, void=not self.reply, aux=False) |