diff options
Diffstat (limited to 'generator/nanopb_generator.py')
| -rw-r--r-- | generator/nanopb_generator.py | 70 |
1 files changed, 46 insertions, 24 deletions
diff --git a/generator/nanopb_generator.py b/generator/nanopb_generator.py index f09be346..67c422d9 100644 --- a/generator/nanopb_generator.py +++ b/generator/nanopb_generator.py @@ -108,7 +108,8 @@ class Field: elif desc.type == FieldD.TYPE_ENUM: self.ltype = 'PB_LTYPE_VARINT' self.ctype = names_from_type_name(desc.type_name) - self.default = Names(self.ctype) + self.default + if self.default is not None: + self.default = self.ctype + self.default elif desc.type == FieldD.TYPE_STRING: self.ltype = 'PB_LTYPE_STRING' if self.max_size is None: @@ -218,7 +219,7 @@ class Field: result += '\n pb_membersize(%s, %s[0]),' % (self.struct_name, self.name) result += ('\n pb_membersize(%s, %s) / pb_membersize(%s, %s[0]),' % (self.struct_name, self.name, self.struct_name, self.name)) - elif self.ltype == 'PB_LTYPE_BYTES': + elif self.htype != 'PB_HTYPE_CALLBACK' and self.ltype == 'PB_LTYPE_BYTES': result += '\n pb_membersize(%s, bytes),' % self.ctype result += ' 0,' else: @@ -240,24 +241,10 @@ class Message: self.fields = [Field(self.name, f) for f in desc.field] self.ordered_fields = self.fields[:] self.ordered_fields.sort() - - def __cmp__(self, other): - '''Sort messages so that submessages are declared before the message - that uses them. - ''' - if self.refers_to(other.name): - return 1 - elif other.refers_to(self.name): - return -1 - else: - return 0 - - def refers_to(self, name): - '''Returns True if this message uses the specified type as field type.''' - for field in self.fields: - if str(field.ctype) == str(name): - return True - return False + + def get_dependencies(self): + '''Get list of type names that this structure refers to.''' + return [str(field.ctype) for field in self.fields] def __str__(self): result = 'typedef struct {\n' @@ -317,16 +304,52 @@ def parse_file(fdesc): enums = [] messages = [] + if fdesc.package: + base_name = Names(fdesc.package.split('.')) + else: + base_name = Names() + for enum in fdesc.enum_type: - enums.append(Enum(Names(), enum)) + enums.append(Enum(base_name, enum)) - for names, message in iterate_messages(fdesc): + for names, message in iterate_messages(fdesc, base_name): messages.append(Message(names, message)) for enum in message.enum_type: enums.append(Enum(names, enum)) return enums, messages +def toposort2(data): + '''Topological sort. + From http://code.activestate.com/recipes/577413-topological-sort/ + This function is under the MIT license. + ''' + for k, v in data.items(): + v.discard(k) # Ignore self dependencies + extra_items_in_deps = reduce(set.union, data.values()) - set(data.keys()) + data.update({item:set() for item in extra_items_in_deps}) + while True: + ordered = set(item for item,dep in data.items() if not dep) + if not ordered: + break + for item in sorted(ordered): + yield item + data = {item: (dep - ordered) for item,dep in data.items() + if item not in ordered} + assert not data, "A cyclic dependency exists amongst %r" % data + +def sort_dependencies(messages): + '''Sort a list of Messages based on dependencies.''' + dependencies = {} + message_by_name = {} + for message in messages: + dependencies[str(message.name)] = set(message.get_dependencies()) + message_by_name[str(message.name)] = message + + for msgname in toposort2(dependencies): + if msgname in message_by_name: + yield message_by_name[msgname] + def generate_header(headername, enums, messages): '''Generate content for a header file. Generates strings, which should be concatenated and stored to file. @@ -344,8 +367,7 @@ def generate_header(headername, enums, messages): yield str(enum) + '\n\n' yield '/* Struct definitions */\n' - messages.sort() - for msg in messages: + for msg in sort_dependencies(messages): yield msg.types() yield str(msg) + '\n\n' |