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-rw-r--r--libxcb/xcb-proto/xcbgen/matcher.py226
-rw-r--r--libxcb/xcb-proto/xcbgen/state.py332
-rw-r--r--libxcb/xcb-proto/xcbgen/xtypes.py1264
3 files changed, 911 insertions, 911 deletions
diff --git a/libxcb/xcb-proto/xcbgen/matcher.py b/libxcb/xcb-proto/xcbgen/matcher.py
index 6e45b236c..c4d99fc57 100644
--- a/libxcb/xcb-proto/xcbgen/matcher.py
+++ b/libxcb/xcb-proto/xcbgen/matcher.py
@@ -1,113 +1,113 @@
-'''
-XML parser. One function for each top-level element in the schema.
-
-Most functions just declare a new object and add it to the module.
-For typedefs, eventcopies, xidtypes, and other aliases though,
-we do not create a new type object, we just record the existing one under a new name.
-'''
-
-from os.path import join
-from xml.etree.cElementTree import parse
-
-from xcbgen.xtypes import *
-
-def import_(node, module, namespace):
- '''
- For imports, we load the file, create a new namespace object,
- execute recursively, then record the import (for header files, etc.)
- '''
- # To avoid circular import error
- from xcbgen import state
- new_file = join(namespace.dir, '%s.xml' % node.text)
- new_root = parse(new_file).getroot()
- new_namespace = state.Namespace(new_file)
- execute(module, new_namespace)
- if not module.has_import(node.text):
- module.add_import(node.text, new_namespace)
-
-def typedef(node, module, namespace):
- id = node.get('newname')
- name = namespace.prefix + (id,)
- type = module.get_type(node.get('oldname'))
- module.add_type(id, namespace.ns, name, type)
-
-def xidtype(node, module, namespace):
- id = node.get('name')
- name = namespace.prefix + (id,)
- type = module.get_type('CARD32')
- module.add_type(id, namespace.ns, name, type)
-
-def xidunion(node, module, namespace):
- id = node.get('name')
- name = namespace.prefix + (id,)
- type = module.get_type('CARD32')
- module.add_type(id, namespace.ns, name, type)
-
-def enum(node, module, namespace):
- id = node.get('name')
- name = namespace.prefix + (id,)
- type = Enum(name, node)
- module.add_type(id, namespace.ns, name, type)
-
-def struct(node, module, namespace):
- id = node.get('name')
- name = namespace.prefix + (id,)
- type = Struct(name, node)
- module.add_type(id, namespace.ns, name, type)
-
-def union(node, module, namespace):
- id = node.get('name')
- name = namespace.prefix + (id,)
- type = Union(name, node)
- module.add_type(id, namespace.ns, name, type)
-
-def request(node, module, namespace):
- id = node.get('name')
- name = namespace.prefix + (id,)
- type = Request(name, node)
- module.add_request(id, name, type)
-
-def event(node, module, namespace):
- id = node.get('name')
- name = namespace.prefix + (id,)
- event = Event(name, node)
- event.add_opcode(node.get('number'), name, True)
- module.add_event(id, name, event)
-
-def eventcopy(node, module, namespace):
- id = node.get('name')
- name = namespace.prefix + (id,)
- event = module.get_event(node.get('ref'))
- event.add_opcode(node.get('number'), name, False)
- module.add_event(id, name, event)
-
-def error(node, module, namespace):
- id = node.get('name')
- name = namespace.prefix + (id,)
- error = Error(name, node)
- error.add_opcode(node.get('number'), name, True)
- module.add_error(id, name, error)
-
-def errorcopy(node, module, namespace):
- id = node.get('name')
- name = namespace.prefix + (id,)
- error = module.get_error(node.get('ref'))
- error.add_opcode(node.get('number'), name, False)
- module.add_error(id, name, error)
-
-funcs = {'import' : import_,
- 'typedef' : typedef,
- 'xidtype' : xidtype,
- 'xidunion' : xidunion,
- 'enum' : enum,
- 'struct' : struct,
- 'union' : union,
- 'request' : request,
- 'event' : event,
- 'eventcopy' : eventcopy,
- 'error' : error,
- 'errorcopy' : errorcopy}
-
-def execute(module, namespace):
- for elt in list(namespace.root):
- funcs[elt.tag](elt, module, namespace)
+'''
+XML parser. One function for each top-level element in the schema.
+
+Most functions just declare a new object and add it to the module.
+For typedefs, eventcopies, xidtypes, and other aliases though,
+we do not create a new type object, we just record the existing one under a new name.
+'''
+
+from os.path import join
+from xml.etree.cElementTree import parse
+
+from xcbgen.xtypes import *
+
+def import_(node, module, namespace):
+ '''
+ For imports, we load the file, create a new namespace object,
+ execute recursively, then record the import (for header files, etc.)
+ '''
+ # To avoid circular import error
+ from xcbgen import state
+ new_file = join(namespace.dir, '%s.xml' % node.text)
+ new_root = parse(new_file).getroot()
+ new_namespace = state.Namespace(new_file)
+ execute(module, new_namespace)
+ if not module.has_import(node.text):
+ module.add_import(node.text, new_namespace)
+
+def typedef(node, module, namespace):
+ id = node.get('newname')
+ name = namespace.prefix + (id,)
+ type = module.get_type(node.get('oldname'))
+ module.add_type(id, namespace.ns, name, type)
+
+def xidtype(node, module, namespace):
+ id = node.get('name')
+ name = namespace.prefix + (id,)
+ type = module.get_type('CARD32')
+ module.add_type(id, namespace.ns, name, type)
+
+def xidunion(node, module, namespace):
+ id = node.get('name')
+ name = namespace.prefix + (id,)
+ type = module.get_type('CARD32')
+ module.add_type(id, namespace.ns, name, type)
+
+def enum(node, module, namespace):
+ id = node.get('name')
+ name = namespace.prefix + (id,)
+ type = Enum(name, node)
+ module.add_type(id, namespace.ns, name, type)
+
+def struct(node, module, namespace):
+ id = node.get('name')
+ name = namespace.prefix + (id,)
+ type = Struct(name, node)
+ module.add_type(id, namespace.ns, name, type)
+
+def union(node, module, namespace):
+ id = node.get('name')
+ name = namespace.prefix + (id,)
+ type = Union(name, node)
+ module.add_type(id, namespace.ns, name, type)
+
+def request(node, module, namespace):
+ id = node.get('name')
+ name = namespace.prefix + (id,)
+ type = Request(name, node)
+ module.add_request(id, name, type)
+
+def event(node, module, namespace):
+ id = node.get('name')
+ name = namespace.prefix + (id,)
+ event = Event(name, node)
+ event.add_opcode(node.get('number'), name, True)
+ module.add_event(id, name, event)
+
+def eventcopy(node, module, namespace):
+ id = node.get('name')
+ name = namespace.prefix + (id,)
+ event = module.get_event(node.get('ref'))
+ event.add_opcode(node.get('number'), name, False)
+ module.add_event(id, name, event)
+
+def error(node, module, namespace):
+ id = node.get('name')
+ name = namespace.prefix + (id,)
+ error = Error(name, node)
+ error.add_opcode(node.get('number'), name, True)
+ module.add_error(id, name, error)
+
+def errorcopy(node, module, namespace):
+ id = node.get('name')
+ name = namespace.prefix + (id,)
+ error = module.get_error(node.get('ref'))
+ error.add_opcode(node.get('number'), name, False)
+ module.add_error(id, name, error)
+
+funcs = {'import' : import_,
+ 'typedef' : typedef,
+ 'xidtype' : xidtype,
+ 'xidunion' : xidunion,
+ 'enum' : enum,
+ 'struct' : struct,
+ 'union' : union,
+ 'request' : request,
+ 'event' : event,
+ 'eventcopy' : eventcopy,
+ 'error' : error,
+ 'errorcopy' : errorcopy}
+
+def execute(module, namespace):
+ for elt in list(namespace.root):
+ funcs[elt.tag](elt, module, namespace)
diff --git a/libxcb/xcb-proto/xcbgen/state.py b/libxcb/xcb-proto/xcbgen/state.py
index ae3d2d45f..902a86341 100644
--- a/libxcb/xcb-proto/xcbgen/state.py
+++ b/libxcb/xcb-proto/xcbgen/state.py
@@ -1,166 +1,166 @@
-'''
-This module contains the namespace class and the singleton module class.
-'''
-from os.path import dirname, basename
-from xml.etree.cElementTree import parse
-
-from xcbgen import matcher
-from xcbgen.error import *
-from xcbgen.xtypes import *
-
-import __main__
-
-class Namespace(object):
- '''
- Contains the naming information for an extension.
-
- Public fields:
-
- header is the header attribute ("header file" name).
- is_ext is true for extensions, false for xproto.
- major_version and minor_version are extension version info.
- ext_xname is the X extension name string.
- ext_name is the XCB extension name prefix.
- '''
- def __init__(self, filename):
- # Path info
- self.path = filename
- self.dir = dirname(filename)
- self.file = basename(filename)
-
- # Parse XML
- self.root = parse(filename).getroot()
- self.header = self.root.get('header')
- self.ns = self.header + ':'
-
- # Get root element attributes
- if self.root.get('extension-xname', False):
- self.is_ext = True
- self.major_version = self.root.get('major-version')
- self.minor_version = self.root.get('minor-version')
- self.ext_xname = self.root.get('extension-xname')
- self.ext_name = self.root.get('extension-name')
- self.prefix = ('xcb', self.ext_name)
- else:
- self.is_ext = False
- self.ext_name = ''
- self.prefix = ('xcb',)
-
-
-class Module(object):
- '''
- This is the grand, encompassing class that represents an entire XCB specification.
- Only gets instantiated once, in the main() routine.
-
- Don't need to worry about this much except to declare it and to get the namespace.
-
- Public fields:
- namespace contains the namespace info for the spec.
- '''
- open = __main__.output['open']
- close = __main__.output['close']
-
- def __init__(self, filename, output):
- self.namespace = Namespace(filename)
- self.output = output
-
- self.imports = []
- self.types = {}
- self.events = {}
- self.errors = {}
- self.all = []
-
- # Register some common types
- self.add_type('CARD8', '', ('uint8_t',), tcard8)
- self.add_type('CARD16', '', ('uint16_t',), tcard16)
- self.add_type('CARD32', '', ('uint32_t',), tcard32)
- self.add_type('INT8', '', ('int8_t',), tint8)
- self.add_type('INT16', '', ('int16_t',), tint16)
- self.add_type('INT32', '', ('int32_t',), tint32)
- self.add_type('BYTE', '', ('uint8_t',), tcard8)
- self.add_type('BOOL', '', ('uint8_t',), tcard8)
- self.add_type('char', '', ('char',), tchar)
- self.add_type('float', '', ('float',), tfloat)
- self.add_type('double', '', ('double',), tdouble)
- self.add_type('void', '', ('void',), tcard8)
-
- # This goes out and parses the rest of the XML
- def register(self):
- matcher.execute(self, self.namespace)
-
- # Recursively resolve all types
- def resolve(self):
- for (name, item) in self.all:
- item.resolve(self)
-
- # Call all the output methods
- def generate(self):
- self.open()
-
- for (name, item) in self.all:
- item.out(name)
-
- self.close()
-
- # Keeps track of what's been imported so far.
- def add_import(self, name, namespace):
- self.imports.append((name, namespace.header))
-
- def has_import(self, name):
- for (name_, header) in self.imports:
- if name_ == name:
- return True
- return False
-
- # Keeps track of non-request/event/error datatypes
- def add_type(self, id, ns, name, item):
- key = ns + id
- if key in self.types:
- return
- self.types[key] = (name, item)
- if name[:-1] == self.namespace.prefix:
- self.all.append((name, item))
-
- def get_type_impl(self, id, idx):
- key = id
- if key in self.types:
- return self.types[key][idx]
-
- key = self.namespace.ns + id
- if key in self.types:
- return self.types[key][idx]
-
- for key in self.types.keys():
- if key.rpartition(':')[2] == id:
- return self.types[key][idx]
-
- raise ResolveException('Type %s not found' % id)
-
- def get_type(self, id):
- return self.get_type_impl(id, 1)
-
- def get_type_name(self, id):
- return self.get_type_impl(id, 0)
-
- # Keeps track of request datatypes
- def add_request(self, id, name, item):
- if name[:-1] == self.namespace.prefix:
- self.all.append((name, item))
-
- # Keeps track of event datatypes
- def add_event(self, id, name, item):
- self.events[id] = (name, item)
- if name[:-1] == self.namespace.prefix:
- self.all.append((name, item))
-
- def get_event(self, id):
- return self.events[id][1]
-
- # Keeps track of error datatypes
- def add_error(self, id, name, item):
- self.errors[id] = (name, item)
- if name[:-1] == self.namespace.prefix:
- self.all.append((name, item))
-
- def get_error(self, id):
- return self.errors[id][1]
+'''
+This module contains the namespace class and the singleton module class.
+'''
+from os.path import dirname, basename
+from xml.etree.cElementTree import parse
+
+from xcbgen import matcher
+from xcbgen.error import *
+from xcbgen.xtypes import *
+
+import __main__
+
+class Namespace(object):
+ '''
+ Contains the naming information for an extension.
+
+ Public fields:
+
+ header is the header attribute ("header file" name).
+ is_ext is true for extensions, false for xproto.
+ major_version and minor_version are extension version info.
+ ext_xname is the X extension name string.
+ ext_name is the XCB extension name prefix.
+ '''
+ def __init__(self, filename):
+ # Path info
+ self.path = filename
+ self.dir = dirname(filename)
+ self.file = basename(filename)
+
+ # Parse XML
+ self.root = parse(filename).getroot()
+ self.header = self.root.get('header')
+ self.ns = self.header + ':'
+
+ # Get root element attributes
+ if self.root.get('extension-xname', False):
+ self.is_ext = True
+ self.major_version = self.root.get('major-version')
+ self.minor_version = self.root.get('minor-version')
+ self.ext_xname = self.root.get('extension-xname')
+ self.ext_name = self.root.get('extension-name')
+ self.prefix = ('xcb', self.ext_name)
+ else:
+ self.is_ext = False
+ self.ext_name = ''
+ self.prefix = ('xcb',)
+
+
+class Module(object):
+ '''
+ This is the grand, encompassing class that represents an entire XCB specification.
+ Only gets instantiated once, in the main() routine.
+
+ Don't need to worry about this much except to declare it and to get the namespace.
+
+ Public fields:
+ namespace contains the namespace info for the spec.
+ '''
+ open = __main__.output['open']
+ close = __main__.output['close']
+
+ def __init__(self, filename, output):
+ self.namespace = Namespace(filename)
+ self.output = output
+
+ self.imports = []
+ self.types = {}
+ self.events = {}
+ self.errors = {}
+ self.all = []
+
+ # Register some common types
+ self.add_type('CARD8', '', ('uint8_t',), tcard8)
+ self.add_type('CARD16', '', ('uint16_t',), tcard16)
+ self.add_type('CARD32', '', ('uint32_t',), tcard32)
+ self.add_type('INT8', '', ('int8_t',), tint8)
+ self.add_type('INT16', '', ('int16_t',), tint16)
+ self.add_type('INT32', '', ('int32_t',), tint32)
+ self.add_type('BYTE', '', ('uint8_t',), tcard8)
+ self.add_type('BOOL', '', ('uint8_t',), tcard8)
+ self.add_type('char', '', ('char',), tchar)
+ self.add_type('float', '', ('float',), tfloat)
+ self.add_type('double', '', ('double',), tdouble)
+ self.add_type('void', '', ('void',), tcard8)
+
+ # This goes out and parses the rest of the XML
+ def register(self):
+ matcher.execute(self, self.namespace)
+
+ # Recursively resolve all types
+ def resolve(self):
+ for (name, item) in self.all:
+ item.resolve(self)
+
+ # Call all the output methods
+ def generate(self):
+ self.open()
+
+ for (name, item) in self.all:
+ item.out(name)
+
+ self.close()
+
+ # Keeps track of what's been imported so far.
+ def add_import(self, name, namespace):
+ self.imports.append((name, namespace.header))
+
+ def has_import(self, name):
+ for (name_, header) in self.imports:
+ if name_ == name:
+ return True
+ return False
+
+ # Keeps track of non-request/event/error datatypes
+ def add_type(self, id, ns, name, item):
+ key = ns + id
+ if key in self.types:
+ return
+ self.types[key] = (name, item)
+ if name[:-1] == self.namespace.prefix:
+ self.all.append((name, item))
+
+ def get_type_impl(self, id, idx):
+ key = id
+ if key in self.types:
+ return self.types[key][idx]
+
+ key = self.namespace.ns + id
+ if key in self.types:
+ return self.types[key][idx]
+
+ for key in self.types.keys():
+ if key.rpartition(':')[2] == id:
+ return self.types[key][idx]
+
+ raise ResolveException('Type %s not found' % id)
+
+ def get_type(self, id):
+ return self.get_type_impl(id, 1)
+
+ def get_type_name(self, id):
+ return self.get_type_impl(id, 0)
+
+ # Keeps track of request datatypes
+ def add_request(self, id, name, item):
+ if name[:-1] == self.namespace.prefix:
+ self.all.append((name, item))
+
+ # Keeps track of event datatypes
+ def add_event(self, id, name, item):
+ self.events[id] = (name, item)
+ if name[:-1] == self.namespace.prefix:
+ self.all.append((name, item))
+
+ def get_event(self, id):
+ return self.events[id][1]
+
+ # Keeps track of error datatypes
+ def add_error(self, id, name, item):
+ self.errors[id] = (name, item)
+ if name[:-1] == self.namespace.prefix:
+ self.all.append((name, item))
+
+ def get_error(self, id):
+ return self.errors[id][1]
diff --git a/libxcb/xcb-proto/xcbgen/xtypes.py b/libxcb/xcb-proto/xcbgen/xtypes.py
index 14c318ac3..882acc9b8 100644
--- a/libxcb/xcb-proto/xcbgen/xtypes.py
+++ b/libxcb/xcb-proto/xcbgen/xtypes.py
@@ -1,632 +1,632 @@
-'''
-This module contains the classes which represent XCB data types.
-'''
-from xcbgen.expr import Field, Expression
-import __main__
-
-class Type(object):
- '''
- Abstract base class for all XCB data types.
- Contains default fields, and some abstract methods.
- '''
- def __init__(self, name):
- '''
- Default structure initializer. Sets up default fields.
-
- Public fields:
- name is a tuple of strings specifying the full type name.
- size is the size of the datatype in bytes, or None if variable-sized.
- nmemb is 1 for non-list types, None for variable-sized lists, otherwise number of elts.
- booleans for identifying subclasses, because I can't figure out isinstance().
- '''
- self.name = name
- self.size = None
- self.nmemb = None
- self.resolved = False
-
- # Screw isinstance().
- self.is_simple = False
- self.is_list = False
- self.is_expr = False
- self.is_container = False
- self.is_reply = False
- self.is_union = False
- self.is_pad = False
- self.is_switch = False
- self.is_bitcase = False
-
- def resolve(self, module):
- '''
- Abstract method for resolving a type.
- This should make sure any referenced types are already declared.
- '''
- raise Exception('abstract resolve method not overridden!')
-
- def out(self, name):
- '''
- Abstract method for outputting code.
- These are declared in the language-specific modules, and
- there must be a dictionary containing them declared when this module is imported!
- '''
- raise Exception('abstract out method not overridden!')
-
- def fixed_size(self):
- '''
- Abstract method for determining if the data type is fixed-size.
- '''
- raise Exception('abstract fixed_size method not overridden!')
-
- def make_member_of(self, module, complex_type, field_type, field_name, visible, wire, auto):
- '''
- Default method for making a data type a member of a structure.
- Extend this if the data type needs to add an additional length field or something.
-
- module is the global module object.
- complex_type is the structure object.
- see Field for the meaning of the other parameters.
- '''
- new_field = Field(self, field_type, field_name, visible, wire, auto)
-
- # We dump the _placeholder_byte if any fields are added.
- for (idx, field) in enumerate(complex_type.fields):
- if field == _placeholder_byte:
- complex_type.fields[idx] = new_field
- return
-
- complex_type.fields.append(new_field)
-
-
-class SimpleType(Type):
- '''
- Derived class which represents a cardinal type like CARD32 or char.
- Any type which is typedef'ed to cardinal will be one of these.
-
- Public fields added:
- none
- '''
- def __init__(self, name, size):
- Type.__init__(self, name)
- self.is_simple = True
- self.size = size
- self.nmemb = 1
-
- def resolve(self, module):
- self.resolved = True
-
- def fixed_size(self):
- return True
-
- out = __main__.output['simple']
-
-
-# Cardinal datatype globals. See module __init__ method.
-tcard8 = SimpleType(('uint8_t',), 1)
-tcard16 = SimpleType(('uint16_t',), 2)
-tcard32 = SimpleType(('uint32_t',), 4)
-tint8 = SimpleType(('int8_t',), 1)
-tint16 = SimpleType(('int16_t',), 2)
-tint32 = SimpleType(('int32_t',), 4)
-tchar = SimpleType(('char',), 1)
-tfloat = SimpleType(('float',), 4)
-tdouble = SimpleType(('double',), 8)
-
-
-class Enum(SimpleType):
- '''
- Derived class which represents an enum. Fixed-size.
-
- Public fields added:
- values contains a list of (name, value) tuples. value is empty, or a number.
- bits contains a list of (name, bitnum) tuples. items only appear if specified as a bit. bitnum is a number.
- '''
- def __init__(self, name, elt):
- SimpleType.__init__(self, name, 4)
- self.values = []
- self.bits = []
- for item in list(elt):
- # First check if we're using a default value
- if len(list(item)) == 0:
- self.values.append((item.get('name'), ''))
- continue
-
- # An explicit value or bit was specified.
- value = list(item)[0]
- if value.tag == 'value':
- self.values.append((item.get('name'), value.text))
- elif value.tag == 'bit':
- self.values.append((item.get('name'), '%u' % (1 << int(value.text, 0))))
- self.bits.append((item.get('name'), value.text))
-
- def resolve(self, module):
- self.resolved = True
-
- def fixed_size(self):
- return True
-
- out = __main__.output['enum']
-
-
-class ListType(Type):
- '''
- Derived class which represents a list of some other datatype. Fixed- or variable-sized.
-
- Public fields added:
- member is the datatype of the list elements.
- parent is the structure type containing the list.
- expr is an Expression object containing the length information, for variable-sized lists.
- '''
- def __init__(self, elt, member, *parent):
- Type.__init__(self, member.name)
- self.is_list = True
- self.member = member
- self.parents = list(parent)
-
- if elt.tag == 'list':
- elts = list(elt)
- self.expr = Expression(elts[0] if len(elts) else elt, self)
- elif elt.tag == 'valueparam':
- self.expr = Expression(elt, self)
-
- self.size = member.size if member.fixed_size() else None
- self.nmemb = self.expr.nmemb if self.expr.fixed_size() else None
-
- def make_member_of(self, module, complex_type, field_type, field_name, visible, wire, auto):
- if not self.fixed_size():
- # We need a length field.
- # Ask our Expression object for it's name, type, and whether it's on the wire.
- lenfid = self.expr.lenfield_type
- lenfield_name = self.expr.lenfield_name
- lenwire = self.expr.lenwire
- needlen = True
-
- # See if the length field is already in the structure.
- for parent in self.parents:
- for field in parent.fields:
- if field.field_name == lenfield_name:
- needlen = False
-
- # It isn't, so we need to add it to the structure ourself.
- if needlen:
- type = module.get_type(lenfid)
- lenfield_type = module.get_type_name(lenfid)
- type.make_member_of(module, complex_type, lenfield_type, lenfield_name, True, lenwire, False)
-
- # Add ourself to the structure by calling our original method.
- Type.make_member_of(self, module, complex_type, field_type, field_name, visible, wire, auto)
-
- def resolve(self, module):
- if self.resolved:
- return
- self.member.resolve(module)
- self.expr.resolve(module, self.parents)
-
- # Find my length field again. We need the actual Field object in the expr.
- # This is needed because we might have added it ourself above.
- if not self.fixed_size():
- for parent in self.parents:
- for field in parent.fields:
- if field.field_name == self.expr.lenfield_name and field.wire:
- self.expr.lenfield = field
- break
-
- self.resolved = True
-
- def fixed_size(self):
- return self.member.fixed_size() and self.expr.fixed_size()
-
-class ExprType(Type):
- '''
- Derived class which represents an exprfield. Fixed size.
-
- Public fields added:
- expr is an Expression object containing the value of the field.
- '''
- def __init__(self, elt, member, *parent):
- Type.__init__(self, member.name)
- self.is_expr = True
- self.member = member
- self.parent = parent
-
- self.expr = Expression(list(elt)[0], self)
-
- self.size = member.size
- self.nmemb = 1
-
- def resolve(self, module):
- if self.resolved:
- return
- self.member.resolve(module)
- self.resolved = True
-
- def fixed_size(self):
- return True
-
-class PadType(Type):
- '''
- Derived class which represents a padding field.
- '''
- def __init__(self, elt):
- Type.__init__(self, tcard8.name)
- self.is_pad = True
- self.size = 1
- self.nmemb = 1 if (elt == None) else int(elt.get('bytes'), 0)
-
- def resolve(self, module):
- self.resolved = True
-
- def fixed_size(self):
- return True
-
-
-class ComplexType(Type):
- '''
- Derived class which represents a structure. Base type for all structure types.
-
- Public fields added:
- fields is an array of Field objects describing the structure fields.
- '''
- def __init__(self, name, elt):
- Type.__init__(self, name)
- self.is_container = True
- self.elt = elt
- self.fields = []
- self.nmemb = 1
- self.size = 0
- self.lenfield_parent = [self]
-
- def resolve(self, module):
- if self.resolved:
- return
- pads = 0
-
- # Resolve all of our field datatypes.
- for child in list(self.elt):
- if child.tag == 'pad':
- field_name = 'pad' + str(pads)
- fkey = 'CARD8'
- type = PadType(child)
- pads = pads + 1
- visible = False
- elif child.tag == 'field':
- field_name = child.get('name')
- fkey = child.get('type')
- type = module.get_type(fkey)
- visible = True
- elif child.tag == 'exprfield':
- field_name = child.get('name')
- fkey = child.get('type')
- type = ExprType(child, module.get_type(fkey), *self.lenfield_parent)
- visible = False
- elif child.tag == 'list':
- field_name = child.get('name')
- fkey = child.get('type')
- type = ListType(child, module.get_type(fkey), *self.lenfield_parent)
- visible = True
- elif child.tag == 'valueparam':
- field_name = child.get('value-list-name')
- fkey = 'CARD32'
- type = ListType(child, module.get_type(fkey), *self.lenfield_parent)
- visible = True
- elif child.tag == 'switch':
- field_name = child.get('name')
- # construct the switch type name from the parent type and the field name
- field_type = self.name + (field_name,)
- type = SwitchType(field_type, child, *self.lenfield_parent)
- visible = True
- type.make_member_of(module, self, field_type, field_name, visible, True, False)
- type.resolve(module)
- continue
- else:
- # Hit this on Reply
- continue
-
- # Get the full type name for the field
- field_type = module.get_type_name(fkey)
- # Add the field to ourself
- type.make_member_of(module, self, field_type, field_name, visible, True, False)
- # Recursively resolve the type (could be another structure, list)
- type.resolve(module)
-
- self.calc_size() # Figure out how big we are
- self.resolved = True
-
- def calc_size(self):
- self.size = 0
- for m in self.fields:
- if not m.wire:
- continue
- if m.type.fixed_size():
- self.size = self.size + (m.type.size * m.type.nmemb)
- else:
- self.size = None
- break
-
- def fixed_size(self):
- for m in self.fields:
- if not m.type.fixed_size():
- return False
- return True
-
-class SwitchType(ComplexType):
- '''
- Derived class which represents a List of Items.
-
- Public fields added:
- bitcases is an array of Bitcase objects describing the list items
- '''
-
- def __init__(self, name, elt, *parents):
- ComplexType.__init__(self, name, elt)
- self.parents = parents
- # FIXME: switch cannot store lenfields, so it should just delegate the parents
- self.lenfield_parent = list(parents) + [self]
- # self.fields contains all possible fields collected from the Bitcase objects,
- # whereas self.items contains the Bitcase objects themselves
- self.bitcases = []
-
- self.is_switch = True
- elts = list(elt)
- self.expr = Expression(elts[0] if len(elts) else elt, self)
-
- def resolve(self, module):
- if self.resolved:
- return
-# pads = 0
-
- parents = list(self.parents) + [self]
-
- # Resolve all of our field datatypes.
- for index, child in enumerate(list(self.elt)):
- if child.tag == 'bitcase':
- field_name = child.get('name')
- if field_name is None:
- field_type = self.name + ('bitcase%d' % index,)
- else:
- field_type = self.name + (field_name,)
-
- # use self.parent to indicate anchestor,
- # as switch does not contain named fields itself
- type = BitcaseType(index, field_type, child, *parents)
- # construct the switch type name from the parent type and the field name
- if field_name is None:
- type.has_name = False
- # Get the full type name for the field
- field_type = type.name
- visible = True
-
- # add the field to ourself
- type.make_member_of(module, self, field_type, field_name, visible, True, False)
-
- # recursively resolve the type (could be another structure, list)
- type.resolve(module)
- inserted = False
- for new_field in type.fields:
- # We dump the _placeholder_byte if any fields are added.
- for (idx, field) in enumerate(self.fields):
- if field == _placeholder_byte:
- self.fields[idx] = new_field
- inserted = True
- break
- if False == inserted:
- self.fields.append(new_field)
-
- self.calc_size() # Figure out how big we are
- self.resolved = True
-
- def make_member_of(self, module, complex_type, field_type, field_name, visible, wire, auto):
- if not self.fixed_size():
- # We need a length field.
- # Ask our Expression object for it's name, type, and whether it's on the wire.
- lenfid = self.expr.lenfield_type
- lenfield_name = self.expr.lenfield_name
- lenwire = self.expr.lenwire
- needlen = True
-
- # See if the length field is already in the structure.
- for parent in self.parents:
- for field in parent.fields:
- if field.field_name == lenfield_name:
- needlen = False
-
- # It isn't, so we need to add it to the structure ourself.
- if needlen:
- type = module.get_type(lenfid)
- lenfield_type = module.get_type_name(lenfid)
- type.make_member_of(module, complex_type, lenfield_type, lenfield_name, True, lenwire, False)
-
- # Add ourself to the structure by calling our original method.
- Type.make_member_of(self, module, complex_type, field_type, field_name, visible, wire, auto)
-
- # size for switch can only be calculated at runtime
- def calc_size(self):
- pass
-
- # note: switch is _always_ of variable size, but we indicate here wether
- # it contains elements that are variable-sized themselves
- def fixed_size(self):
- return False
-# for m in self.fields:
-# if not m.type.fixed_size():
-# return False
-# return True
-
-
-class Struct(ComplexType):
- '''
- Derived class representing a struct data type.
- '''
- out = __main__.output['struct']
-
-
-class Union(ComplexType):
- '''
- Derived class representing a union data type.
- '''
- def __init__(self, name, elt):
- ComplexType.__init__(self, name, elt)
- self.is_union = True
-
- out = __main__.output['union']
-
-
-class BitcaseType(ComplexType):
- '''
- Derived class representing a struct data type.
- '''
- def __init__(self, index, name, elt, *parent):
- elts = list(elt)
- self.expr = Expression(elts[0] if len(elts) else elt, self)
- ComplexType.__init__(self, name, elts[1:])
- self.has_name = True
- self.index = 1
- self.lenfield_parent = list(parent) + [self]
- self.parents = list(parent)
- self.is_bitcase = True
-
- def make_member_of(self, module, switch_type, field_type, field_name, visible, wire, auto):
- '''
- register BitcaseType with the corresponding SwitchType
-
- module is the global module object.
- complex_type is the structure object.
- see Field for the meaning of the other parameters.
- '''
- new_field = Field(self, field_type, field_name, visible, wire, auto)
-
- # We dump the _placeholder_byte if any bitcases are added.
- for (idx, field) in enumerate(switch_type.bitcases):
- if field == _placeholder_byte:
- switch_type.bitcases[idx] = new_field
- return
-
- switch_type.bitcases.append(new_field)
-
- def resolve(self, module):
- if self.resolved:
- return
-
- self.expr.resolve(module, self.parents+[self])
-
- # Resolve the bitcase expression
- ComplexType.resolve(self, module)
-
-
-class Reply(ComplexType):
- '''
- Derived class representing a reply. Only found as a field of Request.
- '''
- def __init__(self, name, elt):
- ComplexType.__init__(self, name, elt)
- self.is_reply = True
-
- def resolve(self, module):
- if self.resolved:
- return
- # Add the automatic protocol fields
- self.fields.append(Field(tcard8, tcard8.name, 'response_type', False, True, True))
- self.fields.append(_placeholder_byte)
- self.fields.append(Field(tcard16, tcard16.name, 'sequence', False, True, True))
- self.fields.append(Field(tcard32, tcard32.name, 'length', False, True, True))
- ComplexType.resolve(self, module)
-
-
-class Request(ComplexType):
- '''
- Derived class representing a request.
-
- Public fields added:
- reply contains the reply datatype or None for void requests.
- opcode contains the request number.
- '''
- def __init__(self, name, elt):
- ComplexType.__init__(self, name, elt)
- self.reply = None
- self.opcode = elt.get('opcode')
-
- for child in list(elt):
- if child.tag == 'reply':
- self.reply = Reply(name, child)
-
- def resolve(self, module):
- if self.resolved:
- return
- # Add the automatic protocol fields
- if module.namespace.is_ext:
- self.fields.append(Field(tcard8, tcard8.name, 'major_opcode', False, True, True))
- self.fields.append(Field(tcard8, tcard8.name, 'minor_opcode', False, True, True))
- self.fields.append(Field(tcard16, tcard16.name, 'length', False, True, True))
- ComplexType.resolve(self, module)
- else:
- self.fields.append(Field(tcard8, tcard8.name, 'major_opcode', False, True, True))
- self.fields.append(_placeholder_byte)
- self.fields.append(Field(tcard16, tcard16.name, 'length', False, True, True))
- ComplexType.resolve(self, module)
-
- if self.reply:
- self.reply.resolve(module)
-
- out = __main__.output['request']
-
-
-class Event(ComplexType):
- '''
- Derived class representing an event data type.
-
- Public fields added:
- opcodes is a dictionary of name -> opcode number, for eventcopies.
- '''
- def __init__(self, name, elt):
- ComplexType.__init__(self, name, elt)
- self.opcodes = {}
-
- tmp = elt.get('no-sequence-number')
- self.has_seq = (tmp == None or tmp.lower() == 'false' or tmp == '0')
-
- def add_opcode(self, opcode, name, main):
- self.opcodes[name] = opcode
- if main:
- self.name = name
-
- def resolve(self, module):
- if self.resolved:
- return
-
- # Add the automatic protocol fields
- self.fields.append(Field(tcard8, tcard8.name, 'response_type', False, True, True))
- if self.has_seq:
- self.fields.append(_placeholder_byte)
- self.fields.append(Field(tcard16, tcard16.name, 'sequence', False, True, True))
- ComplexType.resolve(self, module)
-
- out = __main__.output['event']
-
-
-class Error(ComplexType):
- '''
- Derived class representing an error data type.
-
- Public fields added:
- opcodes is a dictionary of name -> opcode number, for errorcopies.
- '''
- def __init__(self, name, elt):
- ComplexType.__init__(self, name, elt)
- self.opcodes = {}
-
- def add_opcode(self, opcode, name, main):
- self.opcodes[name] = opcode
- if main:
- self.name = name
-
- def resolve(self, module):
- if self.resolved:
- return
-
- # Add the automatic protocol fields
- self.fields.append(Field(tcard8, tcard8.name, 'response_type', False, True, True))
- self.fields.append(Field(tcard8, tcard8.name, 'error_code', False, True, True))
- self.fields.append(Field(tcard16, tcard16.name, 'sequence', False, True, True))
- ComplexType.resolve(self, module)
-
- out = __main__.output['error']
-
-_placeholder_byte = Field(PadType(None), tcard8.name, 'pad0', False, True, False)
+'''
+This module contains the classes which represent XCB data types.
+'''
+from xcbgen.expr import Field, Expression
+import __main__
+
+class Type(object):
+ '''
+ Abstract base class for all XCB data types.
+ Contains default fields, and some abstract methods.
+ '''
+ def __init__(self, name):
+ '''
+ Default structure initializer. Sets up default fields.
+
+ Public fields:
+ name is a tuple of strings specifying the full type name.
+ size is the size of the datatype in bytes, or None if variable-sized.
+ nmemb is 1 for non-list types, None for variable-sized lists, otherwise number of elts.
+ booleans for identifying subclasses, because I can't figure out isinstance().
+ '''
+ self.name = name
+ self.size = None
+ self.nmemb = None
+ self.resolved = False
+
+ # Screw isinstance().
+ self.is_simple = False
+ self.is_list = False
+ self.is_expr = False
+ self.is_container = False
+ self.is_reply = False
+ self.is_union = False
+ self.is_pad = False
+ self.is_switch = False
+ self.is_bitcase = False
+
+ def resolve(self, module):
+ '''
+ Abstract method for resolving a type.
+ This should make sure any referenced types are already declared.
+ '''
+ raise Exception('abstract resolve method not overridden!')
+
+ def out(self, name):
+ '''
+ Abstract method for outputting code.
+ These are declared in the language-specific modules, and
+ there must be a dictionary containing them declared when this module is imported!
+ '''
+ raise Exception('abstract out method not overridden!')
+
+ def fixed_size(self):
+ '''
+ Abstract method for determining if the data type is fixed-size.
+ '''
+ raise Exception('abstract fixed_size method not overridden!')
+
+ def make_member_of(self, module, complex_type, field_type, field_name, visible, wire, auto):
+ '''
+ Default method for making a data type a member of a structure.
+ Extend this if the data type needs to add an additional length field or something.
+
+ module is the global module object.
+ complex_type is the structure object.
+ see Field for the meaning of the other parameters.
+ '''
+ new_field = Field(self, field_type, field_name, visible, wire, auto)
+
+ # We dump the _placeholder_byte if any fields are added.
+ for (idx, field) in enumerate(complex_type.fields):
+ if field == _placeholder_byte:
+ complex_type.fields[idx] = new_field
+ return
+
+ complex_type.fields.append(new_field)
+
+
+class SimpleType(Type):
+ '''
+ Derived class which represents a cardinal type like CARD32 or char.
+ Any type which is typedef'ed to cardinal will be one of these.
+
+ Public fields added:
+ none
+ '''
+ def __init__(self, name, size):
+ Type.__init__(self, name)
+ self.is_simple = True
+ self.size = size
+ self.nmemb = 1
+
+ def resolve(self, module):
+ self.resolved = True
+
+ def fixed_size(self):
+ return True
+
+ out = __main__.output['simple']
+
+
+# Cardinal datatype globals. See module __init__ method.
+tcard8 = SimpleType(('uint8_t',), 1)
+tcard16 = SimpleType(('uint16_t',), 2)
+tcard32 = SimpleType(('uint32_t',), 4)
+tint8 = SimpleType(('int8_t',), 1)
+tint16 = SimpleType(('int16_t',), 2)
+tint32 = SimpleType(('int32_t',), 4)
+tchar = SimpleType(('char',), 1)
+tfloat = SimpleType(('float',), 4)
+tdouble = SimpleType(('double',), 8)
+
+
+class Enum(SimpleType):
+ '''
+ Derived class which represents an enum. Fixed-size.
+
+ Public fields added:
+ values contains a list of (name, value) tuples. value is empty, or a number.
+ bits contains a list of (name, bitnum) tuples. items only appear if specified as a bit. bitnum is a number.
+ '''
+ def __init__(self, name, elt):
+ SimpleType.__init__(self, name, 4)
+ self.values = []
+ self.bits = []
+ for item in list(elt):
+ # First check if we're using a default value
+ if len(list(item)) == 0:
+ self.values.append((item.get('name'), ''))
+ continue
+
+ # An explicit value or bit was specified.
+ value = list(item)[0]
+ if value.tag == 'value':
+ self.values.append((item.get('name'), value.text))
+ elif value.tag == 'bit':
+ self.values.append((item.get('name'), '%u' % (1 << int(value.text, 0))))
+ self.bits.append((item.get('name'), value.text))
+
+ def resolve(self, module):
+ self.resolved = True
+
+ def fixed_size(self):
+ return True
+
+ out = __main__.output['enum']
+
+
+class ListType(Type):
+ '''
+ Derived class which represents a list of some other datatype. Fixed- or variable-sized.
+
+ Public fields added:
+ member is the datatype of the list elements.
+ parent is the structure type containing the list.
+ expr is an Expression object containing the length information, for variable-sized lists.
+ '''
+ def __init__(self, elt, member, *parent):
+ Type.__init__(self, member.name)
+ self.is_list = True
+ self.member = member
+ self.parents = list(parent)
+
+ if elt.tag == 'list':
+ elts = list(elt)
+ self.expr = Expression(elts[0] if len(elts) else elt, self)
+ elif elt.tag == 'valueparam':
+ self.expr = Expression(elt, self)
+
+ self.size = member.size if member.fixed_size() else None
+ self.nmemb = self.expr.nmemb if self.expr.fixed_size() else None
+
+ def make_member_of(self, module, complex_type, field_type, field_name, visible, wire, auto):
+ if not self.fixed_size():
+ # We need a length field.
+ # Ask our Expression object for it's name, type, and whether it's on the wire.
+ lenfid = self.expr.lenfield_type
+ lenfield_name = self.expr.lenfield_name
+ lenwire = self.expr.lenwire
+ needlen = True
+
+ # See if the length field is already in the structure.
+ for parent in self.parents:
+ for field in parent.fields:
+ if field.field_name == lenfield_name:
+ needlen = False
+
+ # It isn't, so we need to add it to the structure ourself.
+ if needlen:
+ type = module.get_type(lenfid)
+ lenfield_type = module.get_type_name(lenfid)
+ type.make_member_of(module, complex_type, lenfield_type, lenfield_name, True, lenwire, False)
+
+ # Add ourself to the structure by calling our original method.
+ Type.make_member_of(self, module, complex_type, field_type, field_name, visible, wire, auto)
+
+ def resolve(self, module):
+ if self.resolved:
+ return
+ self.member.resolve(module)
+ self.expr.resolve(module, self.parents)
+
+ # Find my length field again. We need the actual Field object in the expr.
+ # This is needed because we might have added it ourself above.
+ if not self.fixed_size():
+ for parent in self.parents:
+ for field in parent.fields:
+ if field.field_name == self.expr.lenfield_name and field.wire:
+ self.expr.lenfield = field
+ break
+
+ self.resolved = True
+
+ def fixed_size(self):
+ return self.member.fixed_size() and self.expr.fixed_size()
+
+class ExprType(Type):
+ '''
+ Derived class which represents an exprfield. Fixed size.
+
+ Public fields added:
+ expr is an Expression object containing the value of the field.
+ '''
+ def __init__(self, elt, member, *parent):
+ Type.__init__(self, member.name)
+ self.is_expr = True
+ self.member = member
+ self.parent = parent
+
+ self.expr = Expression(list(elt)[0], self)
+
+ self.size = member.size
+ self.nmemb = 1
+
+ def resolve(self, module):
+ if self.resolved:
+ return
+ self.member.resolve(module)
+ self.resolved = True
+
+ def fixed_size(self):
+ return True
+
+class PadType(Type):
+ '''
+ Derived class which represents a padding field.
+ '''
+ def __init__(self, elt):
+ Type.__init__(self, tcard8.name)
+ self.is_pad = True
+ self.size = 1
+ self.nmemb = 1 if (elt == None) else int(elt.get('bytes'), 0)
+
+ def resolve(self, module):
+ self.resolved = True
+
+ def fixed_size(self):
+ return True
+
+
+class ComplexType(Type):
+ '''
+ Derived class which represents a structure. Base type for all structure types.
+
+ Public fields added:
+ fields is an array of Field objects describing the structure fields.
+ '''
+ def __init__(self, name, elt):
+ Type.__init__(self, name)
+ self.is_container = True
+ self.elt = elt
+ self.fields = []
+ self.nmemb = 1
+ self.size = 0
+ self.lenfield_parent = [self]
+
+ def resolve(self, module):
+ if self.resolved:
+ return
+ pads = 0
+
+ # Resolve all of our field datatypes.
+ for child in list(self.elt):
+ if child.tag == 'pad':
+ field_name = 'pad' + str(pads)
+ fkey = 'CARD8'
+ type = PadType(child)
+ pads = pads + 1
+ visible = False
+ elif child.tag == 'field':
+ field_name = child.get('name')
+ fkey = child.get('type')
+ type = module.get_type(fkey)
+ visible = True
+ elif child.tag == 'exprfield':
+ field_name = child.get('name')
+ fkey = child.get('type')
+ type = ExprType(child, module.get_type(fkey), *self.lenfield_parent)
+ visible = False
+ elif child.tag == 'list':
+ field_name = child.get('name')
+ fkey = child.get('type')
+ type = ListType(child, module.get_type(fkey), *self.lenfield_parent)
+ visible = True
+ elif child.tag == 'valueparam':
+ field_name = child.get('value-list-name')
+ fkey = 'CARD32'
+ type = ListType(child, module.get_type(fkey), *self.lenfield_parent)
+ visible = True
+ elif child.tag == 'switch':
+ field_name = child.get('name')
+ # construct the switch type name from the parent type and the field name
+ field_type = self.name + (field_name,)
+ type = SwitchType(field_type, child, *self.lenfield_parent)
+ visible = True
+ type.make_member_of(module, self, field_type, field_name, visible, True, False)
+ type.resolve(module)
+ continue
+ else:
+ # Hit this on Reply
+ continue
+
+ # Get the full type name for the field
+ field_type = module.get_type_name(fkey)
+ # Add the field to ourself
+ type.make_member_of(module, self, field_type, field_name, visible, True, False)
+ # Recursively resolve the type (could be another structure, list)
+ type.resolve(module)
+
+ self.calc_size() # Figure out how big we are
+ self.resolved = True
+
+ def calc_size(self):
+ self.size = 0
+ for m in self.fields:
+ if not m.wire:
+ continue
+ if m.type.fixed_size():
+ self.size = self.size + (m.type.size * m.type.nmemb)
+ else:
+ self.size = None
+ break
+
+ def fixed_size(self):
+ for m in self.fields:
+ if not m.type.fixed_size():
+ return False
+ return True
+
+class SwitchType(ComplexType):
+ '''
+ Derived class which represents a List of Items.
+
+ Public fields added:
+ bitcases is an array of Bitcase objects describing the list items
+ '''
+
+ def __init__(self, name, elt, *parents):
+ ComplexType.__init__(self, name, elt)
+ self.parents = parents
+ # FIXME: switch cannot store lenfields, so it should just delegate the parents
+ self.lenfield_parent = list(parents) + [self]
+ # self.fields contains all possible fields collected from the Bitcase objects,
+ # whereas self.items contains the Bitcase objects themselves
+ self.bitcases = []
+
+ self.is_switch = True
+ elts = list(elt)
+ self.expr = Expression(elts[0] if len(elts) else elt, self)
+
+ def resolve(self, module):
+ if self.resolved:
+ return
+# pads = 0
+
+ parents = list(self.parents) + [self]
+
+ # Resolve all of our field datatypes.
+ for index, child in enumerate(list(self.elt)):
+ if child.tag == 'bitcase':
+ field_name = child.get('name')
+ if field_name is None:
+ field_type = self.name + ('bitcase%d' % index,)
+ else:
+ field_type = self.name + (field_name,)
+
+ # use self.parent to indicate anchestor,
+ # as switch does not contain named fields itself
+ type = BitcaseType(index, field_type, child, *parents)
+ # construct the switch type name from the parent type and the field name
+ if field_name is None:
+ type.has_name = False
+ # Get the full type name for the field
+ field_type = type.name
+ visible = True
+
+ # add the field to ourself
+ type.make_member_of(module, self, field_type, field_name, visible, True, False)
+
+ # recursively resolve the type (could be another structure, list)
+ type.resolve(module)
+ inserted = False
+ for new_field in type.fields:
+ # We dump the _placeholder_byte if any fields are added.
+ for (idx, field) in enumerate(self.fields):
+ if field == _placeholder_byte:
+ self.fields[idx] = new_field
+ inserted = True
+ break
+ if False == inserted:
+ self.fields.append(new_field)
+
+ self.calc_size() # Figure out how big we are
+ self.resolved = True
+
+ def make_member_of(self, module, complex_type, field_type, field_name, visible, wire, auto):
+ if not self.fixed_size():
+ # We need a length field.
+ # Ask our Expression object for it's name, type, and whether it's on the wire.
+ lenfid = self.expr.lenfield_type
+ lenfield_name = self.expr.lenfield_name
+ lenwire = self.expr.lenwire
+ needlen = True
+
+ # See if the length field is already in the structure.
+ for parent in self.parents:
+ for field in parent.fields:
+ if field.field_name == lenfield_name:
+ needlen = False
+
+ # It isn't, so we need to add it to the structure ourself.
+ if needlen:
+ type = module.get_type(lenfid)
+ lenfield_type = module.get_type_name(lenfid)
+ type.make_member_of(module, complex_type, lenfield_type, lenfield_name, True, lenwire, False)
+
+ # Add ourself to the structure by calling our original method.
+ Type.make_member_of(self, module, complex_type, field_type, field_name, visible, wire, auto)
+
+ # size for switch can only be calculated at runtime
+ def calc_size(self):
+ pass
+
+ # note: switch is _always_ of variable size, but we indicate here wether
+ # it contains elements that are variable-sized themselves
+ def fixed_size(self):
+ return False
+# for m in self.fields:
+# if not m.type.fixed_size():
+# return False
+# return True
+
+
+class Struct(ComplexType):
+ '''
+ Derived class representing a struct data type.
+ '''
+ out = __main__.output['struct']
+
+
+class Union(ComplexType):
+ '''
+ Derived class representing a union data type.
+ '''
+ def __init__(self, name, elt):
+ ComplexType.__init__(self, name, elt)
+ self.is_union = True
+
+ out = __main__.output['union']
+
+
+class BitcaseType(ComplexType):
+ '''
+ Derived class representing a struct data type.
+ '''
+ def __init__(self, index, name, elt, *parent):
+ elts = list(elt)
+ self.expr = Expression(elts[0] if len(elts) else elt, self)
+ ComplexType.__init__(self, name, elts[1:])
+ self.has_name = True
+ self.index = 1
+ self.lenfield_parent = list(parent) + [self]
+ self.parents = list(parent)
+ self.is_bitcase = True
+
+ def make_member_of(self, module, switch_type, field_type, field_name, visible, wire, auto):
+ '''
+ register BitcaseType with the corresponding SwitchType
+
+ module is the global module object.
+ complex_type is the structure object.
+ see Field for the meaning of the other parameters.
+ '''
+ new_field = Field(self, field_type, field_name, visible, wire, auto)
+
+ # We dump the _placeholder_byte if any bitcases are added.
+ for (idx, field) in enumerate(switch_type.bitcases):
+ if field == _placeholder_byte:
+ switch_type.bitcases[idx] = new_field
+ return
+
+ switch_type.bitcases.append(new_field)
+
+ def resolve(self, module):
+ if self.resolved:
+ return
+
+ self.expr.resolve(module, self.parents+[self])
+
+ # Resolve the bitcase expression
+ ComplexType.resolve(self, module)
+
+
+class Reply(ComplexType):
+ '''
+ Derived class representing a reply. Only found as a field of Request.
+ '''
+ def __init__(self, name, elt):
+ ComplexType.__init__(self, name, elt)
+ self.is_reply = True
+
+ def resolve(self, module):
+ if self.resolved:
+ return
+ # Add the automatic protocol fields
+ self.fields.append(Field(tcard8, tcard8.name, 'response_type', False, True, True))
+ self.fields.append(_placeholder_byte)
+ self.fields.append(Field(tcard16, tcard16.name, 'sequence', False, True, True))
+ self.fields.append(Field(tcard32, tcard32.name, 'length', False, True, True))
+ ComplexType.resolve(self, module)
+
+
+class Request(ComplexType):
+ '''
+ Derived class representing a request.
+
+ Public fields added:
+ reply contains the reply datatype or None for void requests.
+ opcode contains the request number.
+ '''
+ def __init__(self, name, elt):
+ ComplexType.__init__(self, name, elt)
+ self.reply = None
+ self.opcode = elt.get('opcode')
+
+ for child in list(elt):
+ if child.tag == 'reply':
+ self.reply = Reply(name, child)
+
+ def resolve(self, module):
+ if self.resolved:
+ return
+ # Add the automatic protocol fields
+ if module.namespace.is_ext:
+ self.fields.append(Field(tcard8, tcard8.name, 'major_opcode', False, True, True))
+ self.fields.append(Field(tcard8, tcard8.name, 'minor_opcode', False, True, True))
+ self.fields.append(Field(tcard16, tcard16.name, 'length', False, True, True))
+ ComplexType.resolve(self, module)
+ else:
+ self.fields.append(Field(tcard8, tcard8.name, 'major_opcode', False, True, True))
+ self.fields.append(_placeholder_byte)
+ self.fields.append(Field(tcard16, tcard16.name, 'length', False, True, True))
+ ComplexType.resolve(self, module)
+
+ if self.reply:
+ self.reply.resolve(module)
+
+ out = __main__.output['request']
+
+
+class Event(ComplexType):
+ '''
+ Derived class representing an event data type.
+
+ Public fields added:
+ opcodes is a dictionary of name -> opcode number, for eventcopies.
+ '''
+ def __init__(self, name, elt):
+ ComplexType.__init__(self, name, elt)
+ self.opcodes = {}
+
+ tmp = elt.get('no-sequence-number')
+ self.has_seq = (tmp == None or tmp.lower() == 'false' or tmp == '0')
+
+ def add_opcode(self, opcode, name, main):
+ self.opcodes[name] = opcode
+ if main:
+ self.name = name
+
+ def resolve(self, module):
+ if self.resolved:
+ return
+
+ # Add the automatic protocol fields
+ self.fields.append(Field(tcard8, tcard8.name, 'response_type', False, True, True))
+ if self.has_seq:
+ self.fields.append(_placeholder_byte)
+ self.fields.append(Field(tcard16, tcard16.name, 'sequence', False, True, True))
+ ComplexType.resolve(self, module)
+
+ out = __main__.output['event']
+
+
+class Error(ComplexType):
+ '''
+ Derived class representing an error data type.
+
+ Public fields added:
+ opcodes is a dictionary of name -> opcode number, for errorcopies.
+ '''
+ def __init__(self, name, elt):
+ ComplexType.__init__(self, name, elt)
+ self.opcodes = {}
+
+ def add_opcode(self, opcode, name, main):
+ self.opcodes[name] = opcode
+ if main:
+ self.name = name
+
+ def resolve(self, module):
+ if self.resolved:
+ return
+
+ # Add the automatic protocol fields
+ self.fields.append(Field(tcard8, tcard8.name, 'response_type', False, True, True))
+ self.fields.append(Field(tcard8, tcard8.name, 'error_code', False, True, True))
+ self.fields.append(Field(tcard16, tcard16.name, 'sequence', False, True, True))
+ ComplexType.resolve(self, module)
+
+ out = __main__.output['error']
+
+_placeholder_byte = Field(PadType(None), tcard8.name, 'pad0', False, True, False)