From 1c590d5a86ae854e53f388e40c952e92f11d59e6 Mon Sep 17 00:00:00 2001 From: Christoph Reimann Date: Thu, 22 Jul 2010 16:41:15 +0200 Subject: [PATCH] partial rewrite of serialize helper functions completed; _serialize() & _unserialize() have been tested for switch derived from valueparam --- src/c_client.py | 528 ++++++++++++++++++++++---------------------------------- 1 file changed, 211 insertions(+), 317 deletions(-) mode change 100755 => 100644 src/c_client.py diff --git a/src/c_client.py b/src/c_client.py old mode 100755 new mode 100644 index 40df493..7b05077 --- a/src/c_client.py +++ b/src/c_client.py @@ -344,16 +344,14 @@ def _c_type_setup(self, name, postfix): # as switch does never appear at toplevel, # continue here with type construction if self.is_switch: - print "switch", self.name # special: switch C structs get pointer fields for variable-sized members _c_complex(self) - # declare switch (un)packing functions + # 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: - # if not hasattr(self, 'in_reply'): _c_serialize(self) _c_unserialize(self) finished_serializers.append(self.c_serialize_name) @@ -369,7 +367,7 @@ def get_request_fields(self): param_fields.append(field) if field.wire and not field.auto: if field.type.fixed_size() and not self.is_switch: - # need to set the field up in the xcb_out structure + # field in the xcb_out structure wire_fields.append(field) # fields like 'pad0' are skipped! @@ -414,15 +412,15 @@ def get_switch_expr_fields(self): return params # get_switch_expr_fields() -def get_serialize_params(self, buffer_var='_buffer', aux_var='_aux', unserialize=False): +def get_serialize_params(context, self, buffer_var='_buffer', aux_var='_aux'): param_fields, wire_fields = get_request_fields(self) if self.is_switch: param_fields = get_switch_expr_fields(self) # _serialize function parameters - if not unserialize: + if 'serialize' == context: params = [('void', '**', buffer_var)] - else: + elif 'unserialize' == context: params = [('const void', '*', buffer_var)] # make sure all required length fields are present @@ -440,18 +438,18 @@ def get_serialize_params(self, buffer_var='_buffer', aux_var='_aux', unserialize params.append((typespec, pointerspec, p.c_field_name)) # aux argument - structure to be serialized - if not unserialize: + if 'serialize' == context: params.append(('const %s' % self.c_type, '*', aux_var)) - elif self.is_switch: + elif 'unserialize' == context and self.is_switch: params.append(('%s' % self.c_type, '*', aux_var)) - if not self.is_switch and not unserialize: + 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)) return (param_fields, wire_fields, params) # get_serialize_params() -def _c_field_mapping(complex_type, context): +def _c_field_mapping(context, complex_type): def get_prefix(field): prefix = '' if context in ('serialize', 'unserialize'): @@ -468,6 +466,7 @@ def _c_field_mapping(complex_type, context): fname = "%s%s" % (prefix, f.c_field_name) if fields.has_key(f.field_name): + continue raise Exception("field name %s has been registered before" % f.field_name) fields[f.field_name] = (fname, f) if f.type.is_container: @@ -483,7 +482,8 @@ def _c_field_mapping(complex_type, context): # switch: get the fields referenced by the switch expr as well # these may not belong to any structure if complex_type.is_switch: - fields += get_serialize_params() + pass +# FIXME: fields += get_serialize_params(context, complex_type) return fields # _c_field_mapping() @@ -497,7 +497,8 @@ def _c_serialize_helper_prefix(prefix): return (prefix_str, lenfield_prefix) # _c_serialize_helper_prefix -def _c_serialize_helper_insert_padding(context, code_lines, space, count=0): +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.append('%s xcb_pad = -xcb_block_len & 3;' % space) code_lines.append('%s if (0 != xcb_pad) {' % space) @@ -508,44 +509,47 @@ def _c_serialize_helper_insert_padding(context, code_lines, space, count=0): code_lines.append('%s xcb_parts_idx++;' % space) elif 'unserialize' == context: code_lines.append('%s xcb_tmp += xcb_pad;' % space) - code_lines.append('%s xcb_buffer_len += xcb_pad;' % space) - + + code_lines.append('%s xcb_buffer_len += xcb_pad;' % space) code_lines.append('%s xcb_pad = 0;' % space) code_lines.append('%s }' % space) - code_lines.append('%s xcb_buffer_len += xcb_block_len + xcb_pad;' % space) code_lines.append('%s xcb_block_len = 0;' % space) - return count + 1 + + return 1 # _c_serialize_helper_insert_padding() -def _c_serialize_helper_switch(self, context, complex_name, code_lines, temp_vars, space, prefix, prefix_str): +def _c_serialize_helper_switch(context, self, complex_name, + code_lines, temp_vars, + space, prefix): + count = 0 + prefix_str, lenfield_prefix = _c_serialize_helper_prefix(prefix) switch_expr = _c_accessor_get_expr(self.expr) + for b in self.bitcases: bitcase_expr = _c_accessor_get_expr(b.type.expr, prefix) code_lines.append(' if(%s & %s) {' % (switch_expr, bitcase_expr)) - # FIXME: change function call depending on context - if 'unserialize' == context: - unserialize_fields(b.type, code_lines, temp_vars, space="%s " % space, - prefix="%s%s" % (prefix_str, complex_name), bitcase=True) - elif 'serialize' == context: - count += serialize_fields(b.type, code_lines, temp_vars, '%s ' % space, - prefix="%s%s" % (prefix_str, complex_name), - serialize_fixed_size_fields=True, bitcase=True) + + _c_serialize_helper_fields(context, b.type, + code_lines, temp_vars, + space="%s " % space, + prefix="%s%s" % (prefix_str, complex_name), + is_bitcase = True) code_lines.append(' }') if 'serialize' == context: - count = insert_padding(count) - return count + count = _c_serialize_helper_insert_padding(context, code_lines, space) if 'unserialize' == context: # padding code_lines.append('%s xcb_pad = -xcb_block_len & 3;' % space) - #code_lines.append('%s xcb_tmp += xcb_block_len;' % space) code_lines.append('%s xcb_buffer_len += xcb_block_len + xcb_pad;' % space) + + return count # _c_serialize_helper_switch def _c_serialize_helper_switch_field(self, field): # switch is handled by this function as a special case args = get_switch_expr_fields(field.type) - field_mapping = _c_field_mapping(self, 'unserialize') + field_mapping = _c_field_mapping('unserialize', self) c_field_names = '' for a in args: c_field_names += "%s, " % field_mapping[a.field_name][0] @@ -555,9 +559,15 @@ def _c_serialize_helper_switch_field(self, field): return length # _c_serialize_helper_switch_field() -def _c_serialize_helper_list_field(context, self, field, lenfield_prefix, code_lines, temp_vars, space): +def _c_serialize_helper_list_field(context, self, field, + code_lines, temp_vars, + space, prefix): + """ + helper function for (un)serialize to cope with lists of variable length + """ expr = field.type.expr - param_fields, wire_fields, params = get_serialize_params(self, unserialize=True) + prefix_str, lenfield_prefix = _c_serialize_helper_prefix(prefix) + param_fields, wire_fields, params = get_serialize_params('unserialize', self) param_names = [p[2] for p in params] # look if the list's lenfield is a struct member or a function argument @@ -568,134 +578,162 @@ def _c_serialize_helper_list_field(context, self, field, lenfield_prefix, code_l # the length field appears as separate argument in unserialize, # so no need for a prefix lenfield_prefix = '' - list_length = _c_accessor_get_expr(field.type.expr, lenfield_prefix) + list_length = _c_accessor_get_expr(expr, lenfield_prefix) - if 'unserialize' == context: - length = '%s * sizeof(%s)' % (list_length, field.type.member.c_wiretype) - # FIXME? - list with variable-sized elements - if field.type.size is None: - length = '' - temp_vars.add(' unsigned int i, xcb_tmp_len;') + # default: list with fixed size elements + length = '%s * sizeof(%s)' % (list_length, field.type.member.c_wiretype) + # list with variable-sized elements + if field.type.size is None: + length = '' + if 'unserialize' == context: + temp_vars.add(' unsigned int i;') + temp_vars.add(' unsigned int 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)) code_lines.append("%s xcb_block_len += xcb_tmp_len;" % space) code_lines.append("%s xcb_tmp += xcb_tmp_len;" % space) code_lines.append("%s }" % space) - # errmsg = '%s: warning: list object with variable-sized members not supported for field %s\n' - # raise Exception(errmsg % (self.c_type, field.c_field_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 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) + code_lines.append('%s xcb_block_len = xcb_parts[xcb_parts_idx].iov_len;' % space) + return length # _c_serialize_helper_list_field() -def unserialize_fields(complex_type, code_lines=[], temp_vars=set(), space='', prefix='', bitcase=False): - need_padding = False - +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)) - if hasattr(complex_type, 'type'): - self = complex_type.type - complex_name = complex_type.name - else: - self = complex_type - complex_name = '_aux' + length = "sizeof(%s)" % field.c_field_type - # special case: switch is serialized by evaluating each bitcase separately - if self.is_switch: - need_padding = True - _c_serialize_helper_switch(self, 'unserialize', complex_name, code_lines, temp_vars, space, prefix, prefix_str) - - # all other data types can be evaluated one field a time - else: - # fixed sized fields: simply cast the buffer to the respective xcb_out type - # this would of course not work for switch/bitcase - if not bitcase: - _c_serialize_helper_insert_padding('unserialize', code_lines, space) + if 'unserialize' == context: + value = ' _aux->%s = *(%s *)xcb_tmp;' % (field.c_field_name, field.c_field_type) + # FIXME? - lists + if field.type.is_list: + raise Exception('list with fixed number of elemens unhandled in _unserialize()') + elif 'serialize' == context: + value = ' xcb_parts[xcb_parts_idx].iov_base = (char *) ' + + if field.type.is_expr: + # need to register a temporary variable for the expression + 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))) + value += "&xcb_expr_%s;" % field.field_name + + elif field.type.is_pad: + if field.type.nmemb == 1: + value += "&xcb_pad;" + else: + value = ' memset(xcb_parts[xcb_parts_idx].iov_base, 0, %d);' % field.type.nmemb + length += "*%d" % field.type.nmemb - for field in self.fields: - if not ((field.wire and not field.auto) or field.visible): - continue + else: + # non-list type with fixed size + if field.type.nmemb == 1: + value += "&%s%s;" % (prefix_str, field.c_field_name) + # list with nmemb (fixed size) elements + else: + value += '%s%s;' % (prefix_str, field.c_field_name) + length = '%d' % field.type.nmemb - # generic length statement - length = "sizeof(%s)" % field.c_field_type - - # switch/bitcase: fixed size fields must be considered explicitly - if field.type.fixed_size(): - if bitcase: - need_padding = True - value = ' _aux->%s = (%s) *xcb_tmp;' % (field.c_field_name, field.type.c_type) - # FIXME - lists - else: - continue + return (value, length) +# _c_serialize_helper_fields_fixed_size() - # fields with variable size - elif not field.type.fixed_size(): - # switch/bitcase: always calculate padding before and after variable sized fields - # FIXME - if need_padding or bitcase: - _c_serialize_helper_insert_padding('unserialize', code_lines, space) +def _c_serialize_helper_fields_variable_size(context, self, field, + code_lines, temp_vars, + space, prefix): + prefix_str, lenfield_prefix = _c_serialize_helper_prefix(prefix) -# value = ' *%s = (%s *) xcb_tmp;' % (field.c_field_name, field.type.c_type) - value = '' + if 'unserialize' == context: + value = '' + elif 'serialize' == context: + value = ' xcb_parts[xcb_parts_idx].iov_base = (char *) %s%s;' % (prefix_str, field.c_field_name) + length = '' - if field.type.is_list: - length = _c_serialize_helper_list_field('unserialize', - self, field, lenfield_prefix, - code_lines, temp_vars, space) + prefix_str, lenfield_prefix = _c_serialize_helper_prefix(prefix) + code_lines.append('%s /* %s */' % (space, field.c_field_name)) - elif field.type.is_switch: - length = _c_serialize_helper_switch_field(self, field) + if field.type.is_list: + length = _c_serialize_helper_list_field(context, self, field, + code_lines, temp_vars, + space, prefix) + elif field.type.is_switch: + length = _c_serialize_helper_switch_field(self, field) + else: + length = "%s(xcb_tmp)" % (field.type.c_unserialize_name) - else: - length = "%s(xcb_tmp)" % (field.type.c_unserialize_name) - # errmsg = '%s: warning: non-list object of variable size not supported for field %s\n' - # raise Exception(errmsg % (self.c_type, field.c_field_name)) - - # save unserialization C code - if value is not None: - if field.type.fixed_size(): - # field appears in the request structure - code_lines.append('%s /* %s.%s */' % (space, self.c_type, field.c_field_name)) - else: - code_lines.append('%s /* %s */' % (space, field.c_field_name)) - - # _aux->XXX = - if value != '': - code_lines.append('%s%s' % (space, value)) - if field.type.fixed_size(): - code_lines.append('%s xcb_block_len += %s;' % (space, length)) - code_lines.append('%s xcb_tmp += %s;' % (space, length)) - else: - # padding - if length != '': - code_lines.append('%s xcb_block_len = %s;' % (space, length)) - code_lines.append('%s xcb_pad = -xcb_block_len & 3;' % space) - code_lines.append('%s xcb_tmp += xcb_block_len + xcb_pad;' % space) - code_lines.append('%s xcb_buffer_len += xcb_block_len + xcb_pad;' % space) - code_lines.append('%s xcb_block_len = 0;' % space) - code_lines.append('%s xcb_pad = 0;' % space) - need_padding = False -# unserialize_fields() - -def serialize_fields(complex_type, code_lines=[], temp_vars=set(), - space='', prefix='', serialize_fixed_size_fields=False, - bitcase=False): - """ - helper routine to build up iovec arrays that will later be copied into a single buffer + return (value, length) +# _c_serialize_helper_fields_variable_size - complex_type - encapsulating Type/Field - code_lines, temp_vars - containers for generated code & variable declarations - space - extra space to be inserted before any statement - prefix - prefix to be used for struct members, needed for switch/bitcase mapping - bitcase - flags whether fields are bitcase members - """ - - # count -> no. of entries in xcb_parts array +def _c_serialize_helper_fields(context, self, + code_lines, temp_vars, + space, prefix, is_bitcase): count = 0 - # flag to mark wether explicit padding needs to be inserted - need_padding = False + 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): + continue + + # switch/bitcase: fixed size fields must be considered explicitly + if field.type.fixed_size(): + if is_bitcase: + value, length = _c_serialize_helper_fields_fixed_size(context, self, field, + code_lines, temp_vars, + space, prefix) + else: + continue + + # fields with variable size + else: + # switch/bitcase: always calculate padding before and after variable sized fields + if need_padding or is_bitcase: + _c_serialize_helper_insert_padding(context, code_lines, space) + + value, length = _c_serialize_helper_fields_variable_size(context, self, field, + code_lines, temp_vars, + space, prefix) + + # save (un)serialization C code + if '' != value: + code_lines.append('%s%s' % (space, value)) + if field.type.fixed_size() and is_bitcase: + code_lines.append('%s xcb_block_len += %s;' % (space, length)) + if 'unserialize' == context: + code_lines.append('%s xcb_tmp += %s;' % (space, length)) + else: + # padding + if '' != length: + code_lines.append('%s xcb_block_len = %s;' % (space, length)) + if 'unserialize' == context: + code_lines.append('%s xcb_tmp += xcb_block_len;' % space) + if 'serialize' == context: + if '' != length: + code_lines.append('%s xcb_parts[xcb_parts_idx].iov_len = xcb_block_len;' % space) + code_lines.append('%s xcb_parts_idx++;' % space) + count += 1 + need_padding = True + + return count +# _c_serialize_helper_fields() + +def _c_serialize_helper(context, complex_type, + code_lines, temp_vars, + space='', prefix=''): + count = 0 if hasattr(complex_type, 'type'): self = complex_type.type complex_name = complex_type.name @@ -703,162 +741,28 @@ def serialize_fields(complex_type, code_lines=[], temp_vars=set(), self = complex_type complex_name = '_aux' - param_fields, wire_fields, params = get_serialize_params(self, unserialize=True) - param_names = [p[2] for p in params] - - def insert_padding(count): - code_lines.append('%s /* padding */' % space) - code_lines.append('%s xcb_pad = -xcb_block_len & 3;' % space) - code_lines.append('%s if (0 != xcb_pad) {' % space) - code_lines.append('%s xcb_parts[xcb_parts_idx].iov_base = xcb_pad0;' % space) - code_lines.append('%s xcb_parts[xcb_parts_idx].iov_len = xcb_pad;' % space) - code_lines.append('%s xcb_parts_idx++;' % space) - code_lines.append('%s }' % space) - code_lines.append('%s xcb_buffer_len += xcb_block_len + xcb_pad;' % space) - code_lines.append('%s xcb_pad = 0;' % space) - code_lines.append('%s xcb_block_len = 0;' % space) - need_padding = True - return count + 1 - # insert_padding() - - # special case - if self.is_switch, all fields need to be serialized conditionally + # special case: switch is serialized by evaluating each bitcase separately if self.is_switch: - switch_expr = _c_accessor_get_expr(self.expr) - need_padding = True - - for b in self.bitcases: - bitcase_expr = _c_accessor_get_expr(b.type.expr, prefix) - code_lines.append(' if(%s & %s) {' % (switch_expr, bitcase_expr)) + count += _c_serialize_helper_switch(context, self, complex_name, + code_lines, temp_vars, + space, prefix) - count += serialize_fields(b.type, code_lines, temp_vars, '%s ' % space, - prefix="%s%s" % (prefix_str, complex_name), - serialize_fixed_size_fields=True, bitcase=True) - code_lines.append(' }') - count = insert_padding(count) - + # all other data types can be evaluated one field a time else: - for field in self.fields: - value = None - - # sort out invisible fields - if not ((field.wire and not field.auto) or field.visible): - continue - - length = "sizeof(%s)" % field.c_field_type - - # switch/bitcase: fixed size fields are serialized explicitly - if field.type.fixed_size() and bitcase: - value = ' xcb_parts[xcb_parts_idx].iov_base = (char *) ' - need_padding = True - - if field.type.is_expr: - # need to register a temporary variable for the expression - 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))) - value += "&xcb_expr_%s;" % field.field_name - - elif field.type.is_pad: - if field.type.nmemb == 1: - value += "&xcb_pad;" - else: - value = ' memset(xcb_parts[xcb_parts_idx].iov_base, 0, %d);' % field.type.nmemb - length += "*%d" % field.type.nmemb - - else: - # non-list type with fixed size - if field.type.nmemb == 1: - value += "&%s%s;" % (prefix_str, field.c_field_name) - # list with nmemb (fixed size) elements - else: - value += '%s%s;' % (prefix_str, field.c_field_name) - length = '%d' % field.type.nmemb - - # fields with variable size - elif not field.type.fixed_size(): - # calculate padding before variable sized fields only if necessary - if bitcase or need_padding: - count = insert_padding(count) - code_lines.append('%s xcb_block_len = 0;' % space) - need_padding = False - - code_lines.append('%s /* %s */' % (space, field.c_field_name)) - value = ' xcb_parts[xcb_parts_idx].iov_base = (char *) %s%s;' % (prefix_str, field.c_field_name) - length = '' - code_lines.append('%s%s' % (space, value)) - - if field.type.is_list: - # list of variable length with variable size elements - if field.type.size is None: - errmsg = '%s: warning: list object with variable-sized members not supported for field %s\n' - sys.stderr.write(errmsg % (self.c_type, field.c_field_name)) - 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(field.type.expr, lenfield_prefix))) - 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 xcb_tmp += xcb_block_len;' % space) - code_lines.append('%s }' % space) - code_lines.append('%s xcb_block_len = xcb_parts[xcb_parts_idx].iov_len;' % space) - - # list of variable length with fixed size elements - else: - # look if the list's lenfield is a struct member or a function argument - lf_prefix = lenfield_prefix - # special case: if the list has a length field, its name will returned - # unchanged by calling c_accessor_get_length(expr) - expr = field.type.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 - lf_prefix = '' - - length = '%s * sizeof(%s)' % (_c_accessor_get_expr(field.type.expr, lf_prefix), - field.type.member.c_wiretype) - - elif field.type.is_switch: - # switch is handled at the beginning of this function as a special case -# count += serialize_fields(field.type, code_lines, temp_vars, space, - # prefix="%s%s" % (prefix_str, field.c_field_name)) - # FIXME - call another serialize - value = '' - sys.stderr.write("FIXME: call %s" % field.type.c_serialize_name) - length = 'undefined' - else: - # FIXME - variable sized field that is not a list - errmsg = '%s: warning: non-list object of variable size not supported for field %s\n' - sys.stderr.write(errmsg % (self.c_type, field.c_field_name)) - length = '%s * sizeof(%s)' % ('undefined', field.type.c_wiretype) - - # save serialization C code using xcb_parts[].iov_base and xcb_parts[].iov_len - if value is not None: - if field.type.fixed_size(): - # field belongs to some anchestor structure - code_lines.append('%s /* %s.%s */' % (space, self.c_type, field.c_field_name)) - code_lines.append('%s%s' % (space, value)) - if bitcase: - code_lines.append('%s xcb_block_len += %s;' % (space, length)) - if length != '': - if not field.type.fixed_size(): - code_lines.append('%s xcb_block_len = %s;' % (space, length)) - code_lines.append('%s xcb_parts[xcb_parts_idx].iov_len = xcb_block_len;' % space) - # increase xcb_parts index - code_lines.append('%s xcb_parts_idx++;' % space) - count += 1 + # unserialize & fixed size fields: simply cast the buffer to the respective xcb_out type + if 'unserialize' == context: + code_lines.append('%s xcb_block_len += sizeof(%s);' % (space, self.c_type)) + code_lines.append('%s xcb_tmp += xcb_block_len;' % space) + _c_serialize_helper_insert_padding(context, code_lines, space) - if not field.type.fixed_size(): - # FIXME - count = insert_padding(count) - need_padding = False - # raise Exception("obsolete - should not be reached") - # code_lines.append('%s xcb_unpadded = xcb_parts[xcb_parts_idx].iov_len;' % space) + count += _c_serialize_helper_fields(context, self, + code_lines, temp_vars, + space, prefix, False) + # "final padding" + count += _c_serialize_helper_insert_padding(context, code_lines, space) - return count -# serialize_fields() + return count +# _c_serialize_helper() def _c_serialize(self): _h_setlevel(1) @@ -871,7 +775,7 @@ def _c_serialize(self): variable_size_fields = 0 # maximum space required for type definition of function arguments maxtypelen = 0 - param_fields, wire_fields, params = get_serialize_params(self) + param_fields, wire_fields, params = get_serialize_params('serialize', self) # determine N(variable_fields) for field in param_fields: @@ -910,34 +814,25 @@ def _c_serialize(self): if variable_size_fields > 0: code_lines = [] temp_vars = set() - count = serialize_fields(self, code_lines, temp_vars, - serialize_fixed_size_fields=False) + count =_c_serialize_helper('serialize', self, + code_lines, temp_vars) # update variable size fields variable_size_fields = count - _c(' unsigned int xcb_pad = 0;') - _c(' char xcb_pad0[3] = {0, 0, 0};') - _c(' struct iovec xcb_parts[%d];', count+1) - _c(' unsigned int xcb_parts_idx = 0;') - _c(' unsigned int xcb_block_len = 0;') + 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;') for t in temp_vars: _c(t) - _c(' char *xcb_tmp;') - _c(' unsigned int i;') _c('') if variable_size_fields > 0: for l in code_lines: _c(l) - -# _c(' /* padding */') -# _c(' xcb_pad = -xcb_block_len & 3;') -# _c(' if (0 != xcb_pad) {') -# _c(' xcb_parts[xcb_parts_idx].iov_base = xcb_pad0;') -# _c(' xcb_parts[xcb_parts_idx].iov_len = xcb_pad;') -# _c(' xcb_parts_idx++;') -# _c(' }') -# _c(' xcb_buffer_len += xcb_block_len + xcb_pad;') _c('') # variable sized fields have been collected, now @@ -965,9 +860,7 @@ def _c_serialize(self): # variable sized fields _c(' for(i=0; i