diff options
Diffstat (limited to 'libs/libevent/docs/event_rpcgen.py')
| -rw-r--r-- | libs/libevent/docs/event_rpcgen.py | 1728 |
1 files changed, 1728 insertions, 0 deletions
diff --git a/libs/libevent/docs/event_rpcgen.py b/libs/libevent/docs/event_rpcgen.py new file mode 100644 index 0000000000..c537565696 --- /dev/null +++ b/libs/libevent/docs/event_rpcgen.py @@ -0,0 +1,1728 @@ +#!/usr/bin/env python2 +# +# Copyright (c) 2005-2007 Niels Provos <provos@citi.umich.edu> +# Copyright (c) 2007-2012 Niels Provos and Nick Mathewson +# All rights reserved. +# +# Generates marshaling code based on libevent. + +# TODO: +# 1) use optparse to allow the strategy shell to parse options, and +# to allow the instantiated factory (for the specific output language) +# to parse remaining options +# 2) move the globals into a class that manages execution (including the +# progress outputs that space stderr at the moment) +# 3) emit other languages + +import sys +import re + +_NAME = "event_rpcgen.py" +_VERSION = "0.1" + +# Globals +line_count = 0 + +white = re.compile(r'\s+') +cppcomment = re.compile(r'\/\/.*$') +nonident = re.compile(r'[^a-zA-Z0-9_]') +structref = re.compile(r'^struct\[([a-zA-Z_][a-zA-Z0-9_]*)\]$') +structdef = re.compile(r'^struct +[a-zA-Z_][a-zA-Z0-9_]* *{$') + +headerdirect = [] +cppdirect = [] + +QUIETLY = 0 + +def declare(s): + if not QUIETLY: + print s + +def TranslateList(mylist, mydict): + return map(lambda x: x % mydict, mylist) + +# Exception class for parse errors +class RpcGenError(Exception): + def __init__(self, why): + self.why = why + def __str__(self): + return str(self.why) + +# Holds everything that makes a struct +class Struct: + def __init__(self, name): + self._name = name + self._entries = [] + self._tags = {} + declare(' Created struct: %s' % name) + + def AddEntry(self, entry): + if self._tags.has_key(entry.Tag()): + raise RpcGenError( + 'Entry "%s" duplicates tag number %d from "%s" ' + 'around line %d' % (entry.Name(), entry.Tag(), + self._tags[entry.Tag()], line_count)) + self._entries.append(entry) + self._tags[entry.Tag()] = entry.Name() + declare(' Added entry: %s' % entry.Name()) + + def Name(self): + return self._name + + def EntryTagName(self, entry): + """Creates the name inside an enumeration for distinguishing data + types.""" + name = "%s_%s" % (self._name, entry.Name()) + return name.upper() + + def PrintIndented(self, file, ident, code): + """Takes an array, add indentation to each entry and prints it.""" + for entry in code: + print >>file, '%s%s' % (ident, entry) + +class StructCCode(Struct): + """ Knows how to generate C code for a struct """ + + def __init__(self, name): + Struct.__init__(self, name) + + def PrintTags(self, file): + """Prints the tag definitions for a structure.""" + print >>file, '/* Tag definition for %s */' % self._name + print >>file, 'enum %s_ {' % self._name.lower() + for entry in self._entries: + print >>file, ' %s=%d,' % (self.EntryTagName(entry), + entry.Tag()) + print >>file, ' %s_MAX_TAGS' % (self._name.upper()) + print >>file, '};\n' + + def PrintForwardDeclaration(self, file): + print >>file, 'struct %s;' % self._name + + def PrintDeclaration(self, file): + print >>file, '/* Structure declaration for %s */' % self._name + print >>file, 'struct %s_access_ {' % self._name + for entry in self._entries: + dcl = entry.AssignDeclaration('(*%s_assign)' % entry.Name()) + dcl.extend( + entry.GetDeclaration('(*%s_get)' % entry.Name())) + if entry.Array(): + dcl.extend( + entry.AddDeclaration('(*%s_add)' % entry.Name())) + self.PrintIndented(file, ' ', dcl) + print >>file, '};\n' + + print >>file, 'struct %s {' % self._name + print >>file, ' struct %s_access_ *base;\n' % self._name + for entry in self._entries: + dcl = entry.Declaration() + self.PrintIndented(file, ' ', dcl) + print >>file, '' + for entry in self._entries: + print >>file, ' ev_uint8_t %s_set;' % entry.Name() + print >>file, '};\n' + + print >>file, \ +"""struct %(name)s *%(name)s_new(void); +struct %(name)s *%(name)s_new_with_arg(void *); +void %(name)s_free(struct %(name)s *); +void %(name)s_clear(struct %(name)s *); +void %(name)s_marshal(struct evbuffer *, const struct %(name)s *); +int %(name)s_unmarshal(struct %(name)s *, struct evbuffer *); +int %(name)s_complete(struct %(name)s *); +void evtag_marshal_%(name)s(struct evbuffer *, ev_uint32_t, + const struct %(name)s *); +int evtag_unmarshal_%(name)s(struct evbuffer *, ev_uint32_t, + struct %(name)s *);""" % { 'name' : self._name } + + + # Write a setting function of every variable + for entry in self._entries: + self.PrintIndented(file, '', entry.AssignDeclaration( + entry.AssignFuncName())) + self.PrintIndented(file, '', entry.GetDeclaration( + entry.GetFuncName())) + if entry.Array(): + self.PrintIndented(file, '', entry.AddDeclaration( + entry.AddFuncName())) + + print >>file, '/* --- %s done --- */\n' % self._name + + def PrintCode(self, file): + print >>file, ('/*\n' + ' * Implementation of %s\n' + ' */\n') % self._name + + print >>file, \ + 'static struct %(name)s_access_ %(name)s_base__ = {' % \ + { 'name' : self._name } + for entry in self._entries: + self.PrintIndented(file, ' ', entry.CodeBase()) + print >>file, '};\n' + + # Creation + print >>file, ( + 'struct %(name)s *\n' + '%(name)s_new(void)\n' + '{\n' + ' return %(name)s_new_with_arg(NULL);\n' + '}\n' + '\n' + 'struct %(name)s *\n' + '%(name)s_new_with_arg(void *unused)\n' + '{\n' + ' struct %(name)s *tmp;\n' + ' if ((tmp = malloc(sizeof(struct %(name)s))) == NULL) {\n' + ' event_warn("%%s: malloc", __func__);\n' + ' return (NULL);\n' + ' }\n' + ' tmp->base = &%(name)s_base__;\n') % { 'name' : self._name } + + for entry in self._entries: + self.PrintIndented(file, ' ', entry.CodeInitialize('tmp')) + print >>file, ' tmp->%s_set = 0;\n' % entry.Name() + + print >>file, ( + ' return (tmp);\n' + '}\n') + + # Adding + for entry in self._entries: + if entry.Array(): + self.PrintIndented(file, '', entry.CodeAdd()) + print >>file, '' + + # Assigning + for entry in self._entries: + self.PrintIndented(file, '', entry.CodeAssign()) + print >>file, '' + + # Getting + for entry in self._entries: + self.PrintIndented(file, '', entry.CodeGet()) + print >>file, '' + + # Clearing + print >>file, ( 'void\n' + '%(name)s_clear(struct %(name)s *tmp)\n' + '{' + ) % { 'name' : self._name } + for entry in self._entries: + self.PrintIndented(file, ' ', entry.CodeClear('tmp')) + + print >>file, '}\n' + + # Freeing + print >>file, ( 'void\n' + '%(name)s_free(struct %(name)s *tmp)\n' + '{' + ) % { 'name' : self._name } + + for entry in self._entries: + self.PrintIndented(file, ' ', entry.CodeFree('tmp')) + + print >>file, (' free(tmp);\n' + '}\n') + + # Marshaling + print >>file, ('void\n' + '%(name)s_marshal(struct evbuffer *evbuf, ' + 'const struct %(name)s *tmp)' + '{') % { 'name' : self._name } + for entry in self._entries: + indent = ' ' + # Optional entries do not have to be set + if entry.Optional(): + indent += ' ' + print >>file, ' if (tmp->%s_set) {' % entry.Name() + self.PrintIndented( + file, indent, + entry.CodeMarshal('evbuf', self.EntryTagName(entry), + entry.GetVarName('tmp'), + entry.GetVarLen('tmp'))) + if entry.Optional(): + print >>file, ' }' + + print >>file, '}\n' + + # Unmarshaling + print >>file, ('int\n' + '%(name)s_unmarshal(struct %(name)s *tmp, ' + ' struct evbuffer *evbuf)\n' + '{\n' + ' ev_uint32_t tag;\n' + ' while (evbuffer_get_length(evbuf) > 0) {\n' + ' if (evtag_peek(evbuf, &tag) == -1)\n' + ' return (-1);\n' + ' switch (tag) {\n' + ) % { 'name' : self._name } + for entry in self._entries: + print >>file, ' case %s:\n' % self.EntryTagName(entry) + if not entry.Array(): + print >>file, ( + ' if (tmp->%s_set)\n' + ' return (-1);' + ) % (entry.Name()) + + self.PrintIndented( + file, ' ', + entry.CodeUnmarshal('evbuf', + self.EntryTagName(entry), + entry.GetVarName('tmp'), + entry.GetVarLen('tmp'))) + + print >>file, ( ' tmp->%s_set = 1;\n' % entry.Name() + + ' break;\n' ) + print >>file, ( ' default:\n' + ' return -1;\n' + ' }\n' + ' }\n' ) + # Check if it was decoded completely + print >>file, ( ' if (%(name)s_complete(tmp) == -1)\n' + ' return (-1);' + ) % { 'name' : self._name } + + # Successfully decoded + print >>file, ( ' return (0);\n' + '}\n') + + # Checking if a structure has all the required data + print >>file, ( + 'int\n' + '%(name)s_complete(struct %(name)s *msg)\n' + '{' ) % { 'name' : self._name } + for entry in self._entries: + if not entry.Optional(): + code = [ + 'if (!msg->%(name)s_set)', + ' return (-1);' ] + code = TranslateList(code, entry.GetTranslation()) + self.PrintIndented( + file, ' ', code) + + self.PrintIndented( + file, ' ', + entry.CodeComplete('msg', entry.GetVarName('msg'))) + print >>file, ( + ' return (0);\n' + '}\n' ) + + # Complete message unmarshaling + print >>file, ( + 'int\n' + 'evtag_unmarshal_%(name)s(struct evbuffer *evbuf, ' + 'ev_uint32_t need_tag, struct %(name)s *msg)\n' + '{\n' + ' ev_uint32_t tag;\n' + ' int res = -1;\n' + '\n' + ' struct evbuffer *tmp = evbuffer_new();\n' + '\n' + ' if (evtag_unmarshal(evbuf, &tag, tmp) == -1' + ' || tag != need_tag)\n' + ' goto error;\n' + '\n' + ' if (%(name)s_unmarshal(msg, tmp) == -1)\n' + ' goto error;\n' + '\n' + ' res = 0;\n' + '\n' + ' error:\n' + ' evbuffer_free(tmp);\n' + ' return (res);\n' + '}\n' ) % { 'name' : self._name } + + # Complete message marshaling + print >>file, ( + 'void\n' + 'evtag_marshal_%(name)s(struct evbuffer *evbuf, ev_uint32_t tag, ' + 'const struct %(name)s *msg)\n' + '{\n' + ' struct evbuffer *buf_ = evbuffer_new();\n' + ' assert(buf_ != NULL);\n' + ' %(name)s_marshal(buf_, msg);\n' + ' evtag_marshal_buffer(evbuf, tag, buf_);\n ' + ' evbuffer_free(buf_);\n' + '}\n' ) % { 'name' : self._name } + +class Entry: + def __init__(self, type, name, tag): + self._type = type + self._name = name + self._tag = int(tag) + self._ctype = type + self._optional = 0 + self._can_be_array = 0 + self._array = 0 + self._line_count = -1 + self._struct = None + self._refname = None + + self._optpointer = True + self._optaddarg = True + + def GetInitializer(self): + assert 0, "Entry does not provide initializer" + + def SetStruct(self, struct): + self._struct = struct + + def LineCount(self): + assert self._line_count != -1 + return self._line_count + + def SetLineCount(self, number): + self._line_count = number + + def Array(self): + return self._array + + def Optional(self): + return self._optional + + def Tag(self): + return self._tag + + def Name(self): + return self._name + + def Type(self): + return self._type + + def MakeArray(self, yes=1): + self._array = yes + + def MakeOptional(self): + self._optional = 1 + + def Verify(self): + if self.Array() and not self._can_be_array: + raise RpcGenError( + 'Entry "%s" cannot be created as an array ' + 'around line %d' % (self._name, self.LineCount())) + if not self._struct: + raise RpcGenError( + 'Entry "%s" does not know which struct it belongs to ' + 'around line %d' % (self._name, self.LineCount())) + if self._optional and self._array: + raise RpcGenError( + 'Entry "%s" has illegal combination of optional and array ' + 'around line %d' % (self._name, self.LineCount())) + + def GetTranslation(self, extradict = {}): + mapping = { + "parent_name" : self._struct.Name(), + "name" : self._name, + "ctype" : self._ctype, + "refname" : self._refname, + "optpointer" : self._optpointer and "*" or "", + "optreference" : self._optpointer and "&" or "", + "optaddarg" : + self._optaddarg and ", const %s value" % self._ctype or "" + } + for (k, v) in extradict.items(): + mapping[k] = v + + return mapping + + def GetVarName(self, var): + return '%(var)s->%(name)s_data' % self.GetTranslation({ 'var' : var }) + + def GetVarLen(self, var): + return 'sizeof(%s)' % self._ctype + + def GetFuncName(self): + return '%s_%s_get' % (self._struct.Name(), self._name) + + def GetDeclaration(self, funcname): + code = [ 'int %s(struct %s *, %s *);' % ( + funcname, self._struct.Name(), self._ctype ) ] + return code + + def CodeGet(self): + code = ( + 'int', + '%(parent_name)s_%(name)s_get(struct %(parent_name)s *msg, ' + '%(ctype)s *value)', + '{', + ' if (msg->%(name)s_set != 1)', + ' return (-1);', + ' *value = msg->%(name)s_data;', + ' return (0);', + '}' ) + code = '\n'.join(code) + code = code % self.GetTranslation() + return code.split('\n') + + def AssignFuncName(self): + return '%s_%s_assign' % (self._struct.Name(), self._name) + + def AddFuncName(self): + return '%s_%s_add' % (self._struct.Name(), self._name) + + def AssignDeclaration(self, funcname): + code = [ 'int %s(struct %s *, const %s);' % ( + funcname, self._struct.Name(), self._ctype ) ] + return code + + def CodeAssign(self): + code = [ 'int', + '%(parent_name)s_%(name)s_assign(struct %(parent_name)s *msg,' + ' const %(ctype)s value)', + '{', + ' msg->%(name)s_set = 1;', + ' msg->%(name)s_data = value;', + ' return (0);', + '}' ] + code = '\n'.join(code) + code = code % self.GetTranslation() + return code.split('\n') + + def CodeClear(self, structname): + code = [ '%s->%s_set = 0;' % (structname, self.Name()) ] + + return code + + def CodeComplete(self, structname, var_name): + return [] + + def CodeFree(self, name): + return [] + + def CodeBase(self): + code = [ + '%(parent_name)s_%(name)s_assign,', + '%(parent_name)s_%(name)s_get,' + ] + if self.Array(): + code.append('%(parent_name)s_%(name)s_add,') + + code = '\n'.join(code) + code = code % self.GetTranslation() + return code.split('\n') + +class EntryBytes(Entry): + def __init__(self, type, name, tag, length): + # Init base class + Entry.__init__(self, type, name, tag) + + self._length = length + self._ctype = 'ev_uint8_t' + + def GetInitializer(self): + return "NULL" + + def GetVarLen(self, var): + return '(%s)' % self._length + + def CodeArrayAdd(self, varname, value): + # XXX: copy here + return [ '%(varname)s = NULL;' % { 'varname' : varname } ] + + def GetDeclaration(self, funcname): + code = [ 'int %s(struct %s *, %s **);' % ( + funcname, self._struct.Name(), self._ctype ) ] + return code + + def AssignDeclaration(self, funcname): + code = [ 'int %s(struct %s *, const %s *);' % ( + funcname, self._struct.Name(), self._ctype ) ] + return code + + def Declaration(self): + dcl = ['ev_uint8_t %s_data[%s];' % (self._name, self._length)] + + return dcl + + def CodeGet(self): + name = self._name + code = [ 'int', + '%s_%s_get(struct %s *msg, %s **value)' % ( + self._struct.Name(), name, + self._struct.Name(), self._ctype), + '{', + ' if (msg->%s_set != 1)' % name, + ' return (-1);', + ' *value = msg->%s_data;' % name, + ' return (0);', + '}' ] + return code + + def CodeAssign(self): + name = self._name + code = [ 'int', + '%s_%s_assign(struct %s *msg, const %s *value)' % ( + self._struct.Name(), name, + self._struct.Name(), self._ctype), + '{', + ' msg->%s_set = 1;' % name, + ' memcpy(msg->%s_data, value, %s);' % ( + name, self._length), + ' return (0);', + '}' ] + return code + + def CodeUnmarshal(self, buf, tag_name, var_name, var_len): + code = [ 'if (evtag_unmarshal_fixed(%(buf)s, %(tag)s, ' + '%(var)s, %(varlen)s) == -1) {', + ' event_warnx("%%s: failed to unmarshal %(name)s", __func__);', + ' return (-1);', + '}' + ] + return TranslateList(code, + self.GetTranslation({ + 'var' : var_name, + 'varlen' : var_len, + 'buf' : buf, + 'tag' : tag_name })) + + def CodeMarshal(self, buf, tag_name, var_name, var_len): + code = ['evtag_marshal(%s, %s, %s, %s);' % ( + buf, tag_name, var_name, var_len)] + return code + + def CodeClear(self, structname): + code = [ '%s->%s_set = 0;' % (structname, self.Name()), + 'memset(%s->%s_data, 0, sizeof(%s->%s_data));' % ( + structname, self._name, structname, self._name)] + + return code + + def CodeInitialize(self, name): + code = ['memset(%s->%s_data, 0, sizeof(%s->%s_data));' % ( + name, self._name, name, self._name)] + return code + + def Verify(self): + if not self._length: + raise RpcGenError( + 'Entry "%s" needs a length ' + 'around line %d' % (self._name, self.LineCount())) + + Entry.Verify(self) + +class EntryInt(Entry): + def __init__(self, type, name, tag, bits=32): + # Init base class + Entry.__init__(self, type, name, tag) + + self._can_be_array = 1 + if bits == 32: + self._ctype = 'ev_uint32_t' + self._marshal_type = 'int' + if bits == 64: + self._ctype = 'ev_uint64_t' + self._marshal_type = 'int64' + + def GetInitializer(self): + return "0" + + def CodeArrayFree(self, var): + return [] + + def CodeArrayAssign(self, varname, srcvar): + return [ '%(varname)s = %(srcvar)s;' % { 'varname' : varname, + 'srcvar' : srcvar } ] + + def CodeArrayAdd(self, varname, value): + """Returns a new entry of this type.""" + return [ '%(varname)s = %(value)s;' % { 'varname' : varname, + 'value' : value } ] + + def CodeUnmarshal(self, buf, tag_name, var_name, var_len): + code = [ + 'if (evtag_unmarshal_%(ma)s(%(buf)s, %(tag)s, &%(var)s) == -1) {', + ' event_warnx("%%s: failed to unmarshal %(name)s", __func__);', + ' return (-1);', + '}' ] + code = '\n'.join(code) % self.GetTranslation({ + 'ma' : self._marshal_type, + 'buf' : buf, + 'tag' : tag_name, + 'var' : var_name }) + return code.split('\n') + + def CodeMarshal(self, buf, tag_name, var_name, var_len): + code = [ + 'evtag_marshal_%s(%s, %s, %s);' % ( + self._marshal_type, buf, tag_name, var_name)] + return code + + def Declaration(self): + dcl = ['%s %s_data;' % (self._ctype, self._name)] + + return dcl + + def CodeInitialize(self, name): + code = ['%s->%s_data = 0;' % (name, self._name)] + return code + +class EntryString(Entry): + def __init__(self, type, name, tag): + # Init base class + Entry.__init__(self, type, name, tag) + + self._can_be_array = 1 + self._ctype = 'char *' + + def GetInitializer(self): + return "NULL" + + def CodeArrayFree(self, varname): + code = [ + 'if (%(var)s != NULL) free(%(var)s);' ] + + return TranslateList(code, { 'var' : varname }) + + def CodeArrayAssign(self, varname, srcvar): + code = [ + 'if (%(var)s != NULL)', + ' free(%(var)s);', + '%(var)s = strdup(%(srcvar)s);', + 'if (%(var)s == NULL) {', + ' event_warnx("%%s: strdup", __func__);', + ' return (-1);', + '}' ] + + return TranslateList(code, { 'var' : varname, + 'srcvar' : srcvar }) + + def CodeArrayAdd(self, varname, value): + code = [ + 'if (%(value)s != NULL) {', + ' %(var)s = strdup(%(value)s);', + ' if (%(var)s == NULL) {', + ' goto error;', + ' }', + '} else {', + ' %(var)s = NULL;', + '}' ] + + return TranslateList(code, { 'var' : varname, + 'value' : value }) + + def GetVarLen(self, var): + return 'strlen(%s)' % self.GetVarName(var) + + def CodeMakeInitalize(self, varname): + return '%(varname)s = NULL;' % { 'varname' : varname } + + def CodeAssign(self): + name = self._name + code = """int +%(parent_name)s_%(name)s_assign(struct %(parent_name)s *msg, + const %(ctype)s value) +{ + if (msg->%(name)s_data != NULL) + free(msg->%(name)s_data); + if ((msg->%(name)s_data = strdup(value)) == NULL) + return (-1); + msg->%(name)s_set = 1; + return (0); +}""" % self.GetTranslation() + + return code.split('\n') + + def CodeUnmarshal(self, buf, tag_name, var_name, var_len): + code = ['if (evtag_unmarshal_string(%(buf)s, %(tag)s, &%(var)s) == -1) {', + ' event_warnx("%%s: failed to unmarshal %(name)s", __func__);', + ' return (-1);', + '}' + ] + code = '\n'.join(code) % self.GetTranslation({ + 'buf' : buf, + 'tag' : tag_name, + 'var' : var_name }) + return code.split('\n') + + def CodeMarshal(self, buf, tag_name, var_name, var_len): + code = ['evtag_marshal_string(%s, %s, %s);' % ( + buf, tag_name, var_name)] + return code + + def CodeClear(self, structname): + code = [ 'if (%s->%s_set == 1) {' % (structname, self.Name()), + ' free(%s->%s_data);' % (structname, self.Name()), + ' %s->%s_data = NULL;' % (structname, self.Name()), + ' %s->%s_set = 0;' % (structname, self.Name()), + '}' + ] + + return code + + def CodeInitialize(self, name): + code = ['%s->%s_data = NULL;' % (name, self._name)] + return code + + def CodeFree(self, name): + code = ['if (%s->%s_data != NULL)' % (name, self._name), + ' free (%s->%s_data);' % (name, self._name)] + + return code + + def Declaration(self): + dcl = ['char *%s_data;' % self._name] + + return dcl + +class EntryStruct(Entry): + def __init__(self, type, name, tag, refname): + # Init base class + Entry.__init__(self, type, name, tag) + + self._optpointer = False + self._can_be_array = 1 + self._refname = refname + self._ctype = 'struct %s*' % refname + self._optaddarg = False + + def GetInitializer(self): + return "NULL" + + def GetVarLen(self, var): + return '-1' + + def CodeArrayAdd(self, varname, value): + code = [ + '%(varname)s = %(refname)s_new();', + 'if (%(varname)s == NULL)', + ' goto error;' ] + + return TranslateList(code, self.GetTranslation({ 'varname' : varname })) + + def CodeArrayFree(self, var): + code = [ '%(refname)s_free(%(var)s);' % self.GetTranslation( + { 'var' : var }) ] + return code + + def CodeArrayAssign(self, var, srcvar): + code = [ + 'int had_error = 0;', + 'struct evbuffer *tmp = NULL;', + '%(refname)s_clear(%(var)s);', + 'if ((tmp = evbuffer_new()) == NULL) {', + ' event_warn("%%s: evbuffer_new()", __func__);', + ' had_error = 1;', + ' goto done;', + '}', + '%(refname)s_marshal(tmp, %(srcvar)s);', + 'if (%(refname)s_unmarshal(%(var)s, tmp) == -1) {', + ' event_warnx("%%s: %(refname)s_unmarshal", __func__);', + ' had_error = 1;', + ' goto done;', + '}', + 'done:' + 'if (tmp != NULL)', + ' evbuffer_free(tmp);', + 'if (had_error) {', + ' %(refname)s_clear(%(var)s);', + ' return (-1);', + '}' ] + + return TranslateList(code, self.GetTranslation({ + 'var' : var, + 'srcvar' : srcvar})) + + def CodeGet(self): + name = self._name + code = [ 'int', + '%s_%s_get(struct %s *msg, %s *value)' % ( + self._struct.Name(), name, + self._struct.Name(), self._ctype), + '{', + ' if (msg->%s_set != 1) {' % name, + ' msg->%s_data = %s_new();' % (name, self._refname), + ' if (msg->%s_data == NULL)' % name, + ' return (-1);', + ' msg->%s_set = 1;' % name, + ' }', + ' *value = msg->%s_data;' % name, + ' return (0);', + '}' ] + return code + + def CodeAssign(self): + name = self._name + code = """int +%(parent_name)s_%(name)s_assign(struct %(parent_name)s *msg, + const %(ctype)s value) +{ + struct evbuffer *tmp = NULL; + if (msg->%(name)s_set) { + %(refname)s_clear(msg->%(name)s_data); + msg->%(name)s_set = 0; + } else { + msg->%(name)s_data = %(refname)s_new(); + if (msg->%(name)s_data == NULL) { + event_warn("%%s: %(refname)s_new()", __func__); + goto error; + } + } + if ((tmp = evbuffer_new()) == NULL) { + event_warn("%%s: evbuffer_new()", __func__); + goto error; + } + %(refname)s_marshal(tmp, value); + if (%(refname)s_unmarshal(msg->%(name)s_data, tmp) == -1) { + event_warnx("%%s: %(refname)s_unmarshal", __func__); + goto error; + } + msg->%(name)s_set = 1; + evbuffer_free(tmp); + return (0); + error: + if (tmp != NULL) + evbuffer_free(tmp); + if (msg->%(name)s_data != NULL) { + %(refname)s_free(msg->%(name)s_data); + msg->%(name)s_data = NULL; + } + return (-1); +}""" % self.GetTranslation() + return code.split('\n') + + def CodeComplete(self, structname, var_name): + code = [ 'if (%(structname)s->%(name)s_set && ' + '%(refname)s_complete(%(var)s) == -1)', + ' return (-1);' ] + + return TranslateList(code, self.GetTranslation({ + 'structname' : structname, + 'var' : var_name })) + + def CodeUnmarshal(self, buf, tag_name, var_name, var_len): + code = ['%(var)s = %(refname)s_new();', + 'if (%(var)s == NULL)', + ' return (-1);', + 'if (evtag_unmarshal_%(refname)s(%(buf)s, %(tag)s, ' + '%(var)s) == -1) {', + ' event_warnx("%%s: failed to unmarshal %(name)s", __func__);', + ' return (-1);', + '}' + ] + code = '\n'.join(code) % self.GetTranslation({ + 'buf' : buf, + 'tag' : tag_name, + 'var' : var_name }) + return code.split('\n') + + def CodeMarshal(self, buf, tag_name, var_name, var_len): + code = ['evtag_marshal_%s(%s, %s, %s);' % ( + self._refname, buf, tag_name, var_name)] + return code + + def CodeClear(self, structname): + code = [ 'if (%s->%s_set == 1) {' % (structname, self.Name()), + ' %s_free(%s->%s_data);' % ( + self._refname, structname, self.Name()), + ' %s->%s_data = NULL;' % (structname, self.Name()), + ' %s->%s_set = 0;' % (structname, self.Name()), + '}' + ] + + return code + + def CodeInitialize(self, name): + code = ['%s->%s_data = NULL;' % (name, self._name)] + return code + + def CodeFree(self, name): + code = ['if (%s->%s_data != NULL)' % (name, self._name), + ' %s_free(%s->%s_data);' % ( + self._refname, name, self._name)] + + return code + + def Declaration(self): + dcl = ['%s %s_data;' % (self._ctype, self._name)] + + return dcl + +class EntryVarBytes(Entry): + def __init__(self, type, name, tag): + # Init base class + Entry.__init__(self, type, name, tag) + + self._ctype = 'ev_uint8_t *' + + def GetInitializer(self): + return "NULL" + + def GetVarLen(self, var): + return '%(var)s->%(name)s_length' % self.GetTranslation({ 'var' : var }) + + def CodeArrayAdd(self, varname, value): + # xxx: copy + return [ '%(varname)s = NULL;' % { 'varname' : varname } ] + + def GetDeclaration(self, funcname): + code = [ 'int %s(struct %s *, %s *, ev_uint32_t *);' % ( + funcname, self._struct.Name(), self._ctype ) ] + return code + + def AssignDeclaration(self, funcname): + code = [ 'int %s(struct %s *, const %s, ev_uint32_t);' % ( + funcname, self._struct.Name(), self._ctype ) ] + return code + + def CodeAssign(self): + name = self._name + code = [ 'int', + '%s_%s_assign(struct %s *msg, ' + 'const %s value, ev_uint32_t len)' % ( + self._struct.Name(), name, + self._struct.Name(), self._ctype), + '{', + ' if (msg->%s_data != NULL)' % name, + ' free (msg->%s_data);' % name, + ' msg->%s_data = malloc(len);' % name, + ' if (msg->%s_data == NULL)' % name, + ' return (-1);', + ' msg->%s_set = 1;' % name, + ' msg->%s_length = len;' % name, + ' memcpy(msg->%s_data, value, len);' % name, + ' return (0);', + '}' ] + return code + + def CodeGet(self): + name = self._name + code = [ 'int', + '%s_%s_get(struct %s *msg, %s *value, ev_uint32_t *plen)' % ( + self._struct.Name(), name, + self._struct.Name(), self._ctype), + '{', + ' if (msg->%s_set != 1)' % name, + ' return (-1);', + ' *value = msg->%s_data;' % name, + ' *plen = msg->%s_length;' % name, + ' return (0);', + '}' ] + return code + + def CodeUnmarshal(self, buf, tag_name, var_name, var_len): + code = ['if (evtag_payload_length(%(buf)s, &%(varlen)s) == -1)', + ' return (-1);', + # We do not want DoS opportunities + 'if (%(varlen)s > evbuffer_get_length(%(buf)s))', + ' return (-1);', + 'if ((%(var)s = malloc(%(varlen)s)) == NULL)', + ' return (-1);', + 'if (evtag_unmarshal_fixed(%(buf)s, %(tag)s, %(var)s, ' + '%(varlen)s) == -1) {', + ' event_warnx("%%s: failed to unmarshal %(name)s", __func__);', + ' return (-1);', + '}' + ] + code = '\n'.join(code) % self.GetTranslation({ + 'buf' : buf, + 'tag' : tag_name, + 'var' : var_name, + 'varlen' : var_len }) + return code.split('\n') + + def CodeMarshal(self, buf, tag_name, var_name, var_len): + code = ['evtag_marshal(%s, %s, %s, %s);' % ( + buf, tag_name, var_name, var_len)] + return code + + def CodeClear(self, structname): + code = [ 'if (%s->%s_set == 1) {' % (structname, self.Name()), + ' free (%s->%s_data);' % (structname, self.Name()), + ' %s->%s_data = NULL;' % (structname, self.Name()), + ' %s->%s_length = 0;' % (structname, self.Name()), + ' %s->%s_set = 0;' % (structname, self.Name()), + '}' + ] + + return code + + def CodeInitialize(self, name): + code = ['%s->%s_data = NULL;' % (name, self._name), + '%s->%s_length = 0;' % (name, self._name) ] + return code + + def CodeFree(self, name): + code = ['if (%s->%s_data != NULL)' % (name, self._name), + ' free(%s->%s_data);' % (name, self._name)] + + return code + + def Declaration(self): + dcl = ['ev_uint8_t *%s_data;' % self._name, + 'ev_uint32_t %s_length;' % self._name] + + return dcl + +class EntryArray(Entry): + def __init__(self, entry): + # Init base class + Entry.__init__(self, entry._type, entry._name, entry._tag) + + self._entry = entry + self._refname = entry._refname + self._ctype = self._entry._ctype + self._optional = True + self._optpointer = self._entry._optpointer + self._optaddarg = self._entry._optaddarg + + # provide a new function for accessing the variable name + def GetVarName(var_name): + return '%(var)s->%(name)s_data[%(index)s]' % \ + self._entry.GetTranslation({'var' : var_name, + 'index' : self._index}) + self._entry.GetVarName = GetVarName + + def GetInitializer(self): + return "NULL" + + def GetVarName(self, var_name): + return var_name + + def GetVarLen(self, var_name): + return '-1' + + def GetDeclaration(self, funcname): + """Allows direct access to elements of the array.""" + code = [ + 'int %(funcname)s(struct %(parent_name)s *, int, %(ctype)s *);' % + self.GetTranslation({ 'funcname' : funcname }) ] + return code + + def AssignDeclaration(self, funcname): + code = [ 'int %s(struct %s *, int, const %s);' % ( + funcname, self._struct.Name(), self._ctype ) ] + return code + + def AddDeclaration(self, funcname): + code = [ + '%(ctype)s %(optpointer)s ' + '%(funcname)s(struct %(parent_name)s *msg%(optaddarg)s);' % \ + self.GetTranslation({ 'funcname' : funcname }) ] + return code + + def CodeGet(self): + code = """int +%(parent_name)s_%(name)s_get(struct %(parent_name)s *msg, int offset, + %(ctype)s *value) +{ + if (!msg->%(name)s_set || offset < 0 || offset >= msg->%(name)s_length) + return (-1); + *value = msg->%(name)s_data[offset]; + return (0); +}""" % self.GetTranslation() + + return code.split('\n') + + def CodeAssign(self): + code = [ + 'int', + '%(parent_name)s_%(name)s_assign(struct %(parent_name)s *msg, int off,', + ' const %(ctype)s value)', + '{', + ' if (!msg->%(name)s_set || off < 0 || off >= msg->%(name)s_length)', + ' return (-1);\n', + ' {' ] + code = TranslateList(code, self.GetTranslation()) + + codearrayassign = self._entry.CodeArrayAssign( + 'msg->%(name)s_data[off]' % self.GetTranslation(), 'value') + code += map(lambda x: ' ' + x, codearrayassign) + + code += TranslateList([ + ' }', + ' return (0);', + '}' ], self.GetTranslation()) + + return code + + def CodeAdd(self): + codearrayadd = self._entry.CodeArrayAdd( + 'msg->%(name)s_data[msg->%(name)s_length - 1]' % self.GetTranslation(), + 'value') + code = [ + 'static int', + '%(parent_name)s_%(name)s_expand_to_hold_more(' + 'struct %(parent_name)s *msg)', + '{', + ' int tobe_allocated = msg->%(name)s_num_allocated;', + ' %(ctype)s* new_data = NULL;', + ' tobe_allocated = !tobe_allocated ? 1 : tobe_allocated << 1;', + ' new_data = (%(ctype)s*) realloc(msg->%(name)s_data,', + ' tobe_allocated * sizeof(%(ctype)s));', + ' if (new_data == NULL)', + ' return -1;', + ' msg->%(name)s_data = new_data;', + ' msg->%(name)s_num_allocated = tobe_allocated;', + ' return 0;' + '}', + '', + '%(ctype)s %(optpointer)s', + '%(parent_name)s_%(name)s_add(' + 'struct %(parent_name)s *msg%(optaddarg)s)', + '{', + ' if (++msg->%(name)s_length >= msg->%(name)s_num_allocated) {', + ' if (%(parent_name)s_%(name)s_expand_to_hold_more(msg)<0)', + ' goto error;', + ' }' ] + + code = TranslateList(code, self.GetTranslation()) + + code += map(lambda x: ' ' + x, codearrayadd) + + code += TranslateList([ + ' msg->%(name)s_set = 1;', + ' return %(optreference)s(msg->%(name)s_data[' + 'msg->%(name)s_length - 1]);', + 'error:', + ' --msg->%(name)s_length;', + ' return (NULL);', + '}' ], self.GetTranslation()) + + return code + + def CodeComplete(self, structname, var_name): + self._index = 'i' + tmp = self._entry.CodeComplete(structname, self._entry.GetVarName(var_name)) + # skip the whole loop if there is nothing to check + if not tmp: + return [] + + translate = self.GetTranslation({ 'structname' : structname }) + code = [ + '{', + ' int i;', + ' for (i = 0; i < %(structname)s->%(name)s_length; ++i) {' ] + + code = TranslateList(code, translate) + + code += map(lambda x: ' ' + x, tmp) + + code += [ + ' }', + '}' ] + + return code + + def CodeUnmarshal(self, buf, tag_name, var_name, var_len): + translate = self.GetTranslation({ 'var' : var_name, + 'buf' : buf, + 'tag' : tag_name, + 'init' : self._entry.GetInitializer()}) + code = [ + 'if (%(var)s->%(name)s_length >= %(var)s->%(name)s_num_allocated &&', + ' %(parent_name)s_%(name)s_expand_to_hold_more(%(var)s) < 0) {', + ' puts("HEY NOW");', + ' return (-1);', + '}'] + + # the unmarshal code directly returns + code = TranslateList(code, translate) + + self._index = '%(var)s->%(name)s_length' % translate + code += self._entry.CodeUnmarshal(buf, tag_name, + self._entry.GetVarName(var_name), + self._entry.GetVarLen(var_name)) + + code += [ '++%(var)s->%(name)s_length;' % translate ] + + return code + + def CodeMarshal(self, buf, tag_name, var_name, var_len): + code = ['{', + ' int i;', + ' for (i = 0; i < %(var)s->%(name)s_length; ++i) {' ] + + self._index = 'i' + code += self._entry.CodeMarshal(buf, tag_name, + self._entry.GetVarName(var_name), + self._entry.GetVarLen(var_name)) + code += [' }', + '}' + ] + + code = "\n".join(code) % self.GetTranslation({ 'var' : var_name }) + + return code.split('\n') + + def CodeClear(self, structname): + translate = self.GetTranslation({ 'structname' : structname }) + codearrayfree = self._entry.CodeArrayFree( + '%(structname)s->%(name)s_data[i]' % self.GetTranslation( + { 'structname' : structname } )) + + code = [ 'if (%(structname)s->%(name)s_set == 1) {' ] + + if codearrayfree: + code += [ + ' int i;', + ' for (i = 0; i < %(structname)s->%(name)s_length; ++i) {' ] + + code = TranslateList(code, translate) + + if codearrayfree: + code += map(lambda x: ' ' + x, codearrayfree) + code += [ + ' }' ] + + code += TranslateList([ + ' free(%(structname)s->%(name)s_data);', + ' %(structname)s->%(name)s_data = NULL;', + ' %(structname)s->%(name)s_set = 0;', + ' %(structname)s->%(name)s_length = 0;', + ' %(structname)s->%(name)s_num_allocated = 0;', + '}' + ], translate) + + return code + + def CodeInitialize(self, name): + code = ['%s->%s_data = NULL;' % (name, self._name), + '%s->%s_length = 0;' % (name, self._name), + '%s->%s_num_allocated = 0;' % (name, self._name)] + return code + + def CodeFree(self, structname): + code = self.CodeClear(structname); + + code += TranslateList([ + 'free(%(structname)s->%(name)s_data);' ], + self.GetTranslation({'structname' : structname })) + + return code + + def Declaration(self): + dcl = ['%s *%s_data;' % (self._ctype, self._name), + 'int %s_length;' % self._name, + 'int %s_num_allocated;' % self._name ] + + return dcl + +def NormalizeLine(line): + global white + global cppcomment + + line = cppcomment.sub('', line) + line = line.strip() + line = white.sub(' ', line) + + return line + +def ProcessOneEntry(factory, newstruct, entry): + optional = 0 + array = 0 + entry_type = '' + name = '' + tag = '' + tag_set = None + separator = '' + fixed_length = '' + + tokens = entry.split(' ') + while tokens: + token = tokens[0] + tokens = tokens[1:] + + if not entry_type: + if not optional and token == 'optional': + optional = 1 + continue + + if not array and token == 'array': + array = 1 + continue + + if not entry_type: + entry_type = token + continue + + if not name: + res = re.match(r'^([^\[\]]+)(\[.*\])?$', token) + if not res: + raise RpcGenError( + 'Cannot parse name: \"%s\" ' + 'around line %d' % (entry, line_count)) + name = res.group(1) + fixed_length = res.group(2) + if fixed_length: + fixed_length = fixed_length[1:-1] + continue + + if not separator: + separator = token + if separator != '=': + raise RpcGenError('Expected "=" after name \"%s\" got %s' + % (name, token)) + continue + + if not tag_set: + tag_set = 1 + if not re.match(r'^(0x)?[0-9]+$', token): + raise RpcGenError('Expected tag number: \"%s\"' % entry) + tag = int(token, 0) + continue + + raise RpcGenError('Cannot parse \"%s\"' % entry) + + if not tag_set: + raise RpcGenError('Need tag number: \"%s\"' % entry) + + # Create the right entry + if entry_type == 'bytes': + if fixed_length: + newentry = factory.EntryBytes(entry_type, name, tag, fixed_length) + else: + newentry = factory.EntryVarBytes(entry_type, name, tag) + elif entry_type == 'int' and not fixed_length: + newentry = factory.EntryInt(entry_type, name, tag) + elif entry_type == 'int64' and not fixed_length: + newentry = factory.EntryInt(entry_type, name, tag, bits=64) + elif entry_type == 'string' and not fixed_length: + newentry = factory.EntryString(entry_type, name, tag) + else: + res = structref.match(entry_type) + if res: + # References another struct defined in our file + newentry = factory.EntryStruct(entry_type, name, tag, res.group(1)) + else: + raise RpcGenError('Bad type: "%s" in "%s"' % (entry_type, entry)) + + structs = [] + + if optional: + newentry.MakeOptional() + if array: + newentry.MakeArray() + + newentry.SetStruct(newstruct) + newentry.SetLineCount(line_count) + newentry.Verify() + + if array: + # We need to encapsulate this entry into a struct + newname = newentry.Name()+ '_array' + + # Now borgify the new entry. + newentry = factory.EntryArray(newentry) + newentry.SetStruct(newstruct) + newentry.SetLineCount(line_count) + newentry.MakeArray() + + newstruct.AddEntry(newentry) + + return structs + +def ProcessStruct(factory, data): + tokens = data.split(' ') + + # First three tokens are: 'struct' 'name' '{' + newstruct = factory.Struct(tokens[1]) + + inside = ' '.join(tokens[3:-1]) + + tokens = inside.split(';') + + structs = [] + + for entry in tokens: + entry = NormalizeLine(entry) + if not entry: + continue + + # It's possible that new structs get defined in here + structs.extend(ProcessOneEntry(factory, newstruct, entry)) + + structs.append(newstruct) + return structs + +def GetNextStruct(file): + global line_count + global cppdirect + + got_struct = 0 + + processed_lines = [] + + have_c_comment = 0 + data = '' + while 1: + line = file.readline() + if not line: + break + + line_count += 1 + line = line[:-1] + + if not have_c_comment and re.search(r'/\*', line): + if re.search(r'/\*.*?\*/', line): + line = re.sub(r'/\*.*?\*/', '', line) + else: + line = re.sub(r'/\*.*$', '', line) + have_c_comment = 1 + + if have_c_comment: + if not re.search(r'\*/', line): + continue + have_c_comment = 0 + line = re.sub(r'^.*\*/', '', line) + + line = NormalizeLine(line) + + if not line: + continue + + if not got_struct: + if re.match(r'#include ["<].*[>"]', line): + cppdirect.append(line) + continue + + if re.match(r'^#(if( |def)|endif)', line): + cppdirect.append(line) + continue + + if re.match(r'^#define', line): + headerdirect.append(line) + continue + + if not structdef.match(line): + raise RpcGenError('Missing struct on line %d: %s' + % (line_count, line)) + else: + got_struct = 1 + data += line + continue + + # We are inside the struct + tokens = line.split('}') + if len(tokens) == 1: + data += ' ' + line + continue + + if len(tokens[1]): + raise RpcGenError('Trailing garbage after struct on line %d' + % line_count) + + # We found the end of the struct + data += ' %s}' % tokens[0] + break + + # Remove any comments, that might be in there + data = re.sub(r'/\*.*\*/', '', data) + + return data + + +def Parse(factory, file): + """ + Parses the input file and returns C code and corresponding header file. + """ + + entities = [] + + while 1: + # Just gets the whole struct nicely formatted + data = GetNextStruct(file) + + if not data: + break + + entities.extend(ProcessStruct(factory, data)) + + return entities + +class CCodeGenerator: + def __init__(self): + pass + + def GuardName(self, name): + # Use the complete provided path to the input file, with all + # non-identifier characters replaced with underscores, to + # reduce the chance of a collision between guard macros. + return 'EVENT_RPCOUT_' + nonident.sub('_', name).upper() + '_' + + def HeaderPreamble(self, name): + guard = self.GuardName(name) + pre = ( + '/*\n' + ' * Automatically generated from %s\n' + ' */\n\n' + '#ifndef %s\n' + '#define %s\n\n' ) % ( + name, guard, guard) + + for statement in headerdirect: + pre += '%s\n' % statement + if headerdirect: + pre += '\n' + + pre += ( + '#include <event2/util.h> /* for ev_uint*_t */\n' + '#include <event2/rpc.h>\n' + ) + + return pre + + def HeaderPostamble(self, name): + guard = self.GuardName(name) + return '#endif /* %s */' % guard + + def BodyPreamble(self, name, header_file): + global _NAME + global _VERSION + + slash = header_file.rfind('/') + if slash != -1: + header_file = header_file[slash+1:] + + pre = ( '/*\n' + ' * Automatically generated from %s\n' + ' * by %s/%s. DO NOT EDIT THIS FILE.\n' + ' */\n\n' ) % (name, _NAME, _VERSION) + pre += ( '#include <stdlib.h>\n' + '#include <string.h>\n' + '#include <assert.h>\n' + '#include <event2/event-config.h>\n' + '#include <event2/event.h>\n' + '#include <event2/buffer.h>\n' + '#include <event2/tag.h>\n\n' + '#ifdef EVENT____func__\n' + '#define __func__ EVENT____func__\n' + '#endif\n\n' + ) + + for statement in cppdirect: + pre += '%s\n' % statement + + pre += '\n#include "%s"\n\n' % header_file + + pre += 'void event_warn(const char *fmt, ...);\n' + pre += 'void event_warnx(const char *fmt, ...);\n\n' + + return pre + + def HeaderFilename(self, filename): + return '.'.join(filename.split('.')[:-1]) + '.h' + + def CodeFilename(self, filename): + return '.'.join(filename.split('.')[:-1]) + '.gen.c' + + def Struct(self, name): + return StructCCode(name) + + def EntryBytes(self, entry_type, name, tag, fixed_length): + return EntryBytes(entry_type, name, tag, fixed_length) + + def EntryVarBytes(self, entry_type, name, tag): + return EntryVarBytes(entry_type, name, tag) + + def EntryInt(self, entry_type, name, tag, bits=32): + return EntryInt(entry_type, name, tag, bits) + + def EntryString(self, entry_type, name, tag): + return EntryString(entry_type, name, tag) + + def EntryStruct(self, entry_type, name, tag, struct_name): + return EntryStruct(entry_type, name, tag, struct_name) + + def EntryArray(self, entry): + return EntryArray(entry) + +class Usage(RpcGenError): + def __init__(self, argv0): + RpcGenError.__init__("usage: %s input.rpc [[output.h] output.c]" + % argv0) + +class CommandLine: + def __init__(self, argv): + """Initialize a command-line to launch event_rpcgen, as if + from a command-line with CommandLine(sys.argv). If you're + calling this directly, remember to provide a dummy value + for sys.argv[0] + """ + self.filename = None + self.header_file = None + self.impl_file = None + self.factory = CCodeGenerator() + + if len(argv) >= 2 and argv[1] == '--quiet': + global QUIETLY + QUIETLY = 1 + del argv[1] + + if len(argv) < 2 or len(argv) > 4: + raise Usage(argv[0]) + + self.filename = argv[1].replace('\\', '/') + if len(argv) == 3: + self.impl_file = argv[2].replace('\\', '/') + if len(argv) == 4: + self.header_file = argv[2].replace('\\', '/') + self.impl_file = argv[3].replace('\\', '/') + + if not self.filename: + raise Usage(argv[0]) + + if not self.impl_file: + self.impl_file = self.factory.CodeFilename(self.filename) + + if not self.header_file: + self.header_file = self.factory.HeaderFilename(self.impl_file) + + if not self.impl_file.endswith('.c'): + raise RpcGenError("can only generate C implementation files") + if not self.header_file.endswith('.h'): + raise RpcGenError("can only generate C header files") + + def run(self): + filename = self.filename + header_file = self.header_file + impl_file = self.impl_file + factory = self.factory + + declare('Reading \"%s\"' % filename) + + fp = open(filename, 'r') + entities = Parse(factory, fp) + fp.close() + + declare('... creating "%s"' % header_file) + header_fp = open(header_file, 'w') + print >>header_fp, factory.HeaderPreamble(filename) + + # Create forward declarations: allows other structs to reference + # each other + for entry in entities: + entry.PrintForwardDeclaration(header_fp) + print >>header_fp, '' + + for entry in entities: + entry.PrintTags(header_fp) + entry.PrintDeclaration(header_fp) + print >>header_fp, factory.HeaderPostamble(filename) + header_fp.close() + + declare('... creating "%s"' % impl_file) + impl_fp = open(impl_file, 'w') + print >>impl_fp, factory.BodyPreamble(filename, header_file) + for entry in entities: + entry.PrintCode(impl_fp) + impl_fp.close() + +if __name__ == '__main__': + try: + CommandLine(sys.argv).run() + sys.exit(0) + + except RpcGenError, e: + print >>sys.stderr, e + sys.exit(1) + + except EnvironmentError, e: + if e.filename and e.strerror: + print >>sys.stderr, "%s: %s" % (e.filename, e.strerror) + sys.exit(1) + elif e.strerror: + print >> sys.stderr, e.strerror + sys.exit(1) + else: + raise |