_clevel = 0
_ns = None
+# global variable to keep track of serializers
+# due to weird dependencies, I see no way to do this more elegant at the moment
+finished_serializers = []
+
def _h(fmt, *args):
'''
Writes the given line to the header file.
_h('')
_h('#include "xcb.h"')
+ _c('#include <stdlib.h>')
_c('#include <string.h>')
_c('#include <assert.h>')
_c('#include "xcbext.h"')
self.c_reply_type = _t(name + ('reply',))
self.c_cookie_type = _t(name + ('cookie',))
+ self.c_aux_name = _n(name + ('aux',))
+ self.c_aux_checked_name = _n(name + ('aux', 'checked'))
+ self.c_aux_unchecked_name = _n(name + ('aux', 'unchecked'))
+ self.c_serialize_name = _n(name + ('serialize',))
+ self.c_unserialize_name = _n(name + ('unserialize',))
+
+ # 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
+ for bitcase in self.bitcases:
+ _c_type_setup(bitcase.type, bitcase.field_type, ())
+
if self.is_container:
self.c_container = 'union' if self.is_union else 'struct'
first_field_after_varsized = None
for field in self.fields:
+ # information about a fields anchestors
+ if self.is_reply or hasattr(self, 'in_reply'):
+ field.type.in_reply = True
+
_c_type_setup(field.type, field.field_type, ())
if field.type.is_list:
_c_type_setup(field.type.member, field.field_type, ())
+ # FIXME - structures with variable sized members, sort out when serialize() is needed
+ if (field.type.nmemb is None): # and not field.type.member.fixed_size():
+ self.need_serialize = True
field.c_field_type = _t(field.field_type)
field.c_field_const_type = ('' if field.type.nmemb == 1 else 'const ') + field.c_field_type
field.c_field_name = _cpp(field.field_name)
field.c_subscript = '[%d]' % field.type.nmemb if (field.type.nmemb > 1) else ''
field.c_pointer = ' ' if field.type.nmemb == 1 else '*'
+ if field.type.is_switch:
+ field.c_pointer = '*'
+ field.c_field_const_type = 'const ' + field.c_field_type
+ self.need_aux = 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
else:
self.last_varsized_field = field
prev_varsized_field = field
- prev_varsized_offset = 0
+ prev_varsized_offset = 0
+
+ # 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
+ _c_accessors(self, name, name)
+
+ 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)
+# _c_type_setup()
+
+def get_request_fields(self):
+ param_fields = []
+ wire_fields = []
+
+ for field in self.fields:
+ if field.visible:
+ # the field should appear as a parameter in the function call
+ 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
+ wire_fields.append(field)
+ # fields like 'pad0' are skipped!
+
+ return (param_fields, wire_fields)
+# get_request_fields()
+
+def unserialize_fields(complex_type, code_lines=[], space='', prefix='', bitcase=False):
+ need_padding = False
+
+ prefix_str = prefix
+ lenfield_prefix = "_aux"
+ if prefix != '':
+ prefix_str += "->"
+ lenfield_prefix += "->%s" % prefix
+
+ if hasattr(complex_type, 'type'):
+ self = complex_type.type
+ complex_name = complex_type.name
+ else:
+ 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]
+
+ 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))
+ unserialize_fields(b.type, code_lines, space="%s " % space,
+ prefix="%s%s" % (prefix_str, complex_name), bitcase=True)
+ code_lines.append(' }')
+ # 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)
+
+
+ else:
+ # if not inside switch, simply cast the buffer to the respective xcb_out type
+ if not bitcase:
+ code_lines.append('%s /* %s */' % (space, self.c_type))
+ code_lines.append('%s xcb_buffer_len = sizeof(%s);' % (space, self.c_type))
+ code_lines.append('%s /* padding */' % space)
+ code_lines.append('%s xcb_buffer_len += -xcb_buffer_len & 3;' % space)
+ code_lines.append('%s xcb_tmp += xcb_buffer_len;' % space)
+
+ for field in self.fields:
+ if not ((field.wire and not field.auto) or field.visible):
+ continue
+
+ length = "sizeof(%s)" % field.c_field_type
+
+ # 1. fields with fixed size need only be filled explicitly inside switch
+ 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
+ # 2. fields with variable size
+ elif not field.type.fixed_size():
+ # unserialize: always calculate padding before variable sized fields in bitcase
+ # FIXME
+ if need_padding or bitcase:
+ 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_tmp += xcb_pad;' % space)
+ code_lines.append('%s xcb_buffer_len += xcb_pad;' % space)
+ code_lines.append('%s xcb_block_len = 0;' % space)
+ code_lines.append('%s xcb_pad = 0;' % space)
+ code_lines.append('%s }' % space)
+
+# value = ' *%s = (%s *) xcb_tmp;' % (field.c_field_name, field.type.c_type)
+ value = ''
+ if field.type.is_list:
+ # FIXME - list with variable-sized 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))
+ expr = field.type.expr
+ # look if the list's lenfield is a struct member or a function argument
+ lf_prefix = lenfield_prefix
+ if expr.lenfield_name == _c_accessor_get_length(expr):
+ if expr.lenfield_name in param_names:
+ 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 by this function as a special case
+ unserialize_fields(field.type, code_lines, space, prefix="%s%s" % (prefix_str, field.c_field_name))
+ 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
+ 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:
+ # take account of padding
+ 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
+
+ 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
+ count = 0
+ # flag to mark wether explicit padding needs to be inserted
+ need_padding = False
+ prefix_str = prefix
+ lenfield_prefix = "_aux"
+ if prefix != '':
+ prefix_str += "->"
+ lenfield_prefix += "->%s" % prefix
+
+
+ if hasattr(complex_type, 'type'):
+ self = complex_type.type
+ complex_name = complex_type.name
+ else:
+ self = complex_type
+ complex_name = '_aux'
+
+ 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
+ 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 += 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)
+
+ else:
+ for field in self.fields:
+ value = None
+
+ # sort out invisible fields
+ if not ((field.wire and not field.auto) or field.visible):
+ continue
+ # else
+ length = "sizeof(%s)" % field.c_field_type
+
+ # 1. fields with fixed size
+ # fixed size fields are not always handled here,
+ # dependent on serialize_fixed_size_fields
+ 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
+
+ # 2. fields with variable size
+ elif not field.type.fixed_size():
+ # always calculate padding before variable sized fields
+ 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)
+ 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:
+ length = '%s * sizeof(%s)' % (_c_accessor_get_expr(field.type.expr, lenfield_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
+ sys.stderr.write("FIXME: call %s" % field.type.c_serialize_name)
+ 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)
+
+ # 3. save serialization C code
+ if value is not None:
+ # set xcb_parts[].iov_base and xcb_parts[].iov_len
+ # insert a comment so one can easily trace back to the XML
+ 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))
+ 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
+
+ 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)
+
+ return count
+# serialize_fields()
+
+def _c_switch_aux_params(self):
+ # get the fields referenced by the switch expression
+ def get_expr_fields(expr):
+ if expr.op is None:
+ if expr.lenfield_name is not None:
+ return [expr.lenfield_name]
+ else:
+ if expr.op == '~':
+ return get_expr_fields(expr.rhs)
+ elif expr.op == 'popcount':
+ return get_expr_fields(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()
+
+ # resolve the field names with the parent structure(s)
+ unresolved_fields = get_expr_fields(self.expr)
+ expr_fields = dict.fromkeys(unresolved_fields)
+ for p in reversed(self.parent):
+ parent_fields = dict((f.field_name, f) for f in p.fields)
+ if len(unresolved_fields) == 0:
+ break
+ for f in parent_fields.keys():
+ if f in unresolved_fields:
+ expr_fields[f] = parent_fields[f]
+ unresolved_fields.remove(f)
+
+ if None in expr_fields.values():
+ raise Exception("could not resolve all fields for <switch> %s" % self.name)
+
+ params = []
+ for name, field in expr_fields.iteritems():
+ params.append((field, name))
+
+ return params
+# _c_switch_aux_params()
+
+def get_serialize_params(self, buffer_var='_buffer', aux_var='_aux', unserialize=False):
+ param_fields, wire_fields = get_request_fields(self)
+ if self.is_switch:
+ switch_params = _c_switch_aux_params(self)
+ param_fields += [s[0] for s in switch_params]
+
+ # _serialize function parameters
+ if not unserialize:
+ params = [('void', '**', buffer_var)]
+ else:
+ params = [('const void', '*', buffer_var)]
+
+ # 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))
+
+ # parameter fields if any
+ if self.is_switch:
+ for p in switch_params:
+ typespec = p[0].c_field_const_type
+ pointerspec = p[0].c_pointer
+ params.append((typespec, pointerspec, p[0].c_field_name))
+ # aux argument - structure to be serialized
+ if not unserialize:
+ params.append(('const %s' % self.c_type, '*', aux_var))
+ elif self.is_switch:
+ params.append(('%s' % self.c_type, '*', aux_var))
+ if not self.is_switch and not unserialize:
+ 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_serialize(self):
+ _h_setlevel(1)
+ _c_setlevel(1)
+
+ _hc('')
+ # _serialize() returns the buffer size
+ _hc('int')
+
+ variable_size_fields = 0
+ # maximum space required for type definition of function arguments
+ maxtypelen = 0
+ param_fields, wire_fields, params = get_serialize_params(self)
+
+ # determine N(variable_fields)
+ for field in param_fields:
+ # if self.is_switch, treat all fields as if they are variable sized
+ if not field.type.fixed_size() or self.is_switch:
+ variable_size_fields += 1
+ # determine maxtypelen
+ for p in params:
+ maxtypelen = max(maxtypelen, len(p[0]) + len(p[1]))
+
+ # write to .c/.h
+ for p in range(len(params)):
+ line = ""
+ typespec, pointerspec, field_name = params[p]
+ indent = ' '*(len(self.c_serialize_name)+2)
+ # p==0: function declaration
+ if 0==p:
+ 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:
+ _hc("%s," % line)
+ else:
+ _h("%s);" % line)
+ _c("%s)" % line)
+
+ _c('{')
+ if not self.is_switch:
+ _c(' %s *xcb_out = *_buffer;', self.c_type)
+ _c(' unsigned int xcb_out_pad = -sizeof(%s) & 3;', self.c_type)
+ _c(' unsigned int xcb_buffer_len = sizeof(%s) + xcb_out_pad;', self.c_type)
+ else:
+ _c(' char *xcb_out = *_buffer;')
+ _c(' unsigned int xcb_buffer_len = 0;')
+ if variable_size_fields > 0:
+ code_lines = []
+ temp_vars = set()
+ count = serialize_fields(self, code_lines, temp_vars,
+ serialize_fixed_size_fields=False)
+ # 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;')
+ 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
+ # allocate memory and copy everything into a continuous memory area
+ _c(' if (NULL == xcb_out) {')
+ _c(' /* allocate memory */')
+ _c(' *_buffer = malloc(xcb_buffer_len);')
+ _c(' xcb_out = *_buffer;')
+ _c(' }')
+ _c('')
+
+ # fill in struct members
+ if not self.is_switch:
+ if len(wire_fields)>0:
+ _c(' *xcb_out = *_aux;')
+
+ # copy variable size fields into the buffer
+ if variable_size_fields > 0:
+ # xcb_out padding
+ if not self.is_switch:
+ _c(' xcb_tmp = (char*)++xcb_out;')
+ _c(' xcb_tmp += xcb_out_pad;')
+ else:
+ _c(' xcb_tmp = xcb_out;')
+
+ # variable sized fields
+ _c(' for(i=0; i<xcb_parts_idx; i++) {')
+# _c(' if (0 != xcb_parts[i].iov_base) {')
+ _c(' memcpy(xcb_tmp, xcb_parts[i].iov_base, xcb_parts[i].iov_len);')
+# _c(' }')
+ _c(' xcb_tmp += xcb_parts[i].iov_len;')
+ _c(' }')
+ _c('')
+ _c(' return xcb_buffer_len;')
+ _c('}')
+# _c_serialize()
+
+def _c_unserialize(self):
+ _h_setlevel(1)
+ _c_setlevel(1)
+
+ # _unserialize()
+ _hc('')
+ # _unserialize() returns the buffer size as well
+ _hc('int')
+
+
+ variable_size_fields = 0
+ # maximum space required for type definition of function arguments
+ maxtypelen = 0
+ param_fields, wire_fields, params = get_serialize_params(self, unserialize=True)
+
+ # determine N(variable_fields)
+ for field in param_fields:
+ # if self.is_switch, treat all fields as if they are variable sized
+ if not field.type.fixed_size() or self.is_switch:
+ variable_size_fields += 1
+ # determine maxtypelen
+ for p in params:
+ maxtypelen = max(maxtypelen, len(p[0]) + len(p[1]))
+
+ # write to .c/.h
+ for p in range(len(params)):
+ line = ""
+ typespec, pointerspec, field_name = params[p]
+ indent = ' '*(len(self.c_unserialize_name)+2)
+ # p==0: function declaration
+ if 0==p:
+ 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:
+ _hc("%s," % line)
+ else:
+ _h("%s);" % line)
+ _c("%s)" % line)
+
+ _c('{')
+ _c(' char *xcb_tmp = (char *)_buffer;')
+ if not self.is_switch:
+ _c(' const %s *_aux = (%s *)_buffer;', self.c_type, self.c_type)
+ _c(' unsigned int xcb_buffer_len = 0;')
+ _c(' unsigned int xcb_block_len = 0;')
+ _c(' unsigned int xcb_pad = 0;')
+ _c('')
+
+ code_lines = []
+ unserialize_fields(self, code_lines)
+ for l in code_lines:
+ _c(l)
+ _c('')
+ _c(' return xcb_buffer_len;')
+ _c('}')
+# _c_unserialize()
def _c_iterator_get_end(field, accum):
'''
'''
lenexp = _c_accessor_get_length(expr, prefix)
- if expr.op != None:
+ if expr.op == '~':
+ return '(' + '~' + _c_accessor_get_expr(expr.rhs, prefix) + ')'
+ elif expr.op == 'popcount':
+ return 'xcb_popcount(' + _c_accessor_get_expr(expr.rhs, prefix) + ')'
+ elif expr.op == 'enumref':
+ enum_name = expr.lenfield_type.name
+ constant_name = expr.lenfield_name
+ c_name = _n(enum_name + (constant_name,)).upper()
+ return c_name
+ elif expr.op == 'sumof':
+ # 1. locate the referenced list object
+ list_obj = expr.lenfield_type
+ field = None
+ for f in expr.lenfield_parent.fields:
+ if f.field_name == expr.lenfield_name:
+ field = f
+ break
+ if field is None:
+ raise Exception("list field '%s' referenced by sumof not found" % expr.lenfield_name)
+ if prefix != '':
+ prefix = "%s->" % prefix
+ list_name = "%s%s" % (prefix, field.c_field_name)
+ c_length_func = "%s(%s%s)" % (field.c_length_name, prefix, field.c_field_name)
+ 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) + ')'
elif expr.bitfield:
return 'xcb_popcount(' + lenexp + ')'
_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)
+ _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('')
varfield = None
for field in self.fields:
- if not field.type.fixed_size():
+ if not field.type.fixed_size() and not self.is_switch:
varfield = field.c_field_name
continue
if varfield != None and not field.type.is_pad and field.wire:
struct_fields.append(field)
for field in struct_fields:
- if len(field.c_field_type) > maxtypelen:
- maxtypelen = len(field.c_field_type)
+ length = len(field.c_field_type)
+ if field.type.fixed_size():
+ length += 1
+ if length > maxtypelen:
+ maxtypelen = length
for field in struct_fields:
- spacing = ' ' * (maxtypelen - len(field.c_field_type))
- _h(' %s%s %s%s; /**< */', field.c_field_type, spacing, field.c_field_name, field.c_subscript)
+ if field.type.fixed_size():
+ spacing = ' ' * (maxtypelen - len(field.c_field_type))
+ _h(' %s%s %s%s; /**< */', 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;', self.c_type)
_c_complex(self)
_c_iterator(self, name)
-def _c_request_helper(self, name, cookie_type, void, regular):
+def _c_request_helper(self, name, cookie_type, void, regular, aux=False):
'''
Declares a request function.
'''
func_ext_global = '&' + _ns.c_ext_global_name if _ns.is_ext else '0'
# What our function name is
- func_name = self.c_request_name
+ func_name = self.c_request_name if not aux else self.c_aux_name
if checked:
- func_name = self.c_checked_name
+ func_name = self.c_checked_name if not aux else self.c_aux_checked_name
if unchecked:
- func_name = self.c_unchecked_name
+ func_name = self.c_unchecked_name if not aux else self.c_aux_unchecked_name
param_fields = []
wire_fields = []
maxtypelen = len('xcb_connection_t')
+ serial_fields = []
for field in self.fields:
if field.visible:
if field.wire and not field.auto:
# We need to set the field up in the structure
wire_fields.append(field)
+ if field.type.need_serialize:
+ serial_fields.append(field)
for field in param_fields:
- if len(field.c_field_const_type) > maxtypelen:
- maxtypelen = len(field.c_field_const_type)
+ c_field_const_type = field.c_field_const_type
+ if field.type.need_serialize and not aux:
+ c_field_const_type = "const void"
+ if len(c_field_const_type) > maxtypelen:
+ maxtypelen = len(c_field_const_type)
_h_setlevel(1)
_c_setlevel(1)
_hc(' ** @param xcb_connection_t%s *c', spacing)
for field in param_fields:
- spacing = ' ' * (maxtypelen - len(field.c_field_const_type))
- _hc(' ** @param %s%s %s%s', field.c_field_const_type, spacing, field.c_pointer, field.c_field_name)
+ c_field_const_type = field.c_field_const_type
+ if field.type.need_serialize and not aux:
+ c_field_const_type = "const void"
+ spacing = ' ' * (maxtypelen - len(c_field_const_type))
+ _hc(' ** @param %s%s %s%s', c_field_const_type, spacing, field.c_pointer, field.c_field_name)
_hc(' ** @returns %s', cookie_type)
_hc(' **')
count = len(param_fields)
for field in param_fields:
count = count - 1
- spacing = ' ' * (maxtypelen - len(field.c_field_const_type))
+ c_field_const_type = field.c_field_const_type
+ if field.type.need_serialize and not aux:
+ c_field_const_type = "const void"
+ spacing = ' ' * (maxtypelen - len(c_field_const_type))
comma = ',' if count else ');'
- _h('%s%s%s %s%s /**< */%s', func_spacing, field.c_field_const_type, spacing, field.c_pointer, field.c_field_name, comma)
+ _h('%s%s%s %s%s /**< */%s', func_spacing, c_field_const_type,
+ spacing, field.c_pointer, field.c_field_name, comma)
comma = ',' if count else ')'
- _c('%s%s%s %s%s /**< */%s', func_spacing, field.c_field_const_type, spacing, field.c_pointer, field.c_field_name, comma)
+ _c('%s%s%s %s%s /**< */%s', func_spacing, c_field_const_type,
+ spacing, field.c_pointer, field.c_field_name, comma)
count = 2
for field in param_fields:
if not field.type.fixed_size():
count = count + 2
+ if field.type.need_serialize:
+ # _serialize() keeps track of padding automatically
+ count -= 1
_c('{')
_c(' static const xcb_protocol_request_t xcb_req = {')
_c(' /* isvoid */ %d', 1 if void else 0)
_c(' };')
_c(' ')
+
_c(' struct iovec xcb_parts[%d];', count + 2)
_c(' %s xcb_ret;', func_cookie)
_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))
_c(' ')
-
+ _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)
_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 field.type.fixed_size():
- _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)
+ if not field.type.need_serialize:
+ _c(' xcb_parts[%d].iov_base = (char *) %s;', count, field.c_field_name)
else:
- _c(' xcb_parts[%d].iov_len = %s * sizeof(%s);', count, 'Uh oh', field.type.c_wiretype)
- _c(' xcb_parts[%d].iov_base = 0;', count + 1)
- _c(' xcb_parts[%d].iov_len = -xcb_parts[%d].iov_len & 3;', count + 1, count)
- count = count + 2
+ if not aux:
+ _c(' xcb_parts[%d].iov_base = (char *) %s;', count, field.c_field_name)
+ else:
+ _c(' xcb_parts[%d].iov_base = (char *) 0;', count)
+ idx = serial_fields.index(field)
+ if not aux:
+ serialize_args = get_serialize_params(field.type,
+ field.c_field_name,
+ '&xcb_aux%d' % idx)[2]
+ else:
+ serialize_args = get_serialize_params(field.type,
+ '&xcb_parts[%d].iov_base' % count,
+ field.c_field_name)[2]
+
+ serialize_args = reduce(lambda x,y: "%s, %s" % (x,y), [a[2] for a in serialize_args])
+ _c(' xcb_parts[%d].iov_len = ', count)
+ if aux:
+ _c(' %s (%s);', field.type.c_serialize_name, serialize_args)
+ free_calls.append(' free(xcb_parts[%d].iov_base);' % count)
+ 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:
+ # the _serialize() function keeps track of padding automatically
+ _c(' xcb_parts[%d].iov_base = 0;', count)
+ _c(' xcb_parts[%d].iov_len = -xcb_parts[%d].iov_len & 3;', count, count-1)
+ count += 1
+ _c(' ')
_c(' xcb_ret.sequence = xcb_send_request(c, %s, xcb_parts + 2, &xcb_req);', func_flags)
+
+ # free dyn. all. data, if any
+ for f in free_calls:
+ _c(f)
_c(' return xcb_ret;')
_c('}')
# Request prototypes
_c_request_helper(self, name, self.c_cookie_type, False, True)
_c_request_helper(self, name, self.c_cookie_type, False, False)
+ if self.need_aux:
+ _c_request_helper(self, name, self.c_cookie_type, False, True, True)
+ _c_request_helper(self, name, self.c_cookie_type, False, False, True)
# Reply accessors
_c_accessors(self.reply, name + ('reply',), name)
_c_reply(self, name)
# Request prototypes
_c_request_helper(self, name, 'xcb_void_cookie_t', True, False)
_c_request_helper(self, name, 'xcb_void_cookie_t', True, True)
+ if self.need_aux:
+ _c_request_helper(self, name, 'xcb_void_cookie_t', True, False, True)
+ _c_request_helper(self, name, 'xcb_void_cookie_t', True, True, True)
+
def c_event(self, name):
'''
'union' : c_union,
'request' : c_request,
'event' : c_event,
- 'error' : c_error
+ 'error' : c_error,
}
# Boilerplate below this point
projects / free-sw / xcb / libxcb / blobdiff