class PnaclGen(WrapperGen):
"""PnaclGen generates shim code to bridge the Gcc ABI with PNaCl.
This subclass of WrapperGenerator takes the IDL sources and
generates shim methods for bridging the calling conventions between GCC
and PNaCl (LLVM). Some of the PPAPI methods do not need shimming, so
this will also detect those situations and provide direct access to the
original PPAPI methods (rather than the shim methods).
"""
def __init__(self):
WrapperGen.__init__(self, 'Pnacl', 'Pnacl Shim Gen', 'pnacl',
'Generate the PNaCl shim.')
self.cgen = CGen()
self._skip_opt = False
############################################################
def OwnHeaderFile(self):
"""Return the header file that specifies the API of this wrapper.
We do not generate the header files. """
return 'ppapi/generators/pnacl_shim.h'
def InterfaceVersionNeedsWrapping(self, iface, version):
"""Return true if the interface+version has ANY methods that
need wrapping.
"""
if self._skip_opt:
return True
for member in iface.GetListOf('Member'):
release = member.GetRelease(version)
if self.MemberNeedsWrapping(member, release):
return True
return False
def MemberNeedsWrapping(self, member, release):
"""Return true if a particular member function at a particular
release needs wrapping.
"""
if self._skip_opt:
return True
if not member.InReleases([release]):
return False
ret, name, array, args_spec = self.cgen.GetComponents(
member, release, 'store')
return self.TypeNeedsWrapping(ret,
[]) or self.ArgsNeedWrapping(args_spec)
def ArgsNeedWrapping(self, args):
"""Return true if any parameter in the list needs wrapping.
"""
for arg in args:
(type_str, name, array_dims, more_args) = arg
if self.TypeNeedsWrapping(type_str, array_dims):
return True
return False
def TypeNeedsWrapping(self, type_node, array_dims):
"""Return true if a parameter type needs wrapping.
Currently, this is true for byval aggregates.
"""
is_aggregate = type_node.startswith('struct') or \
type_node.startswith('union')
is_reference = (type_node.find('*') != -1 or array_dims != [])
return is_aggregate and not is_reference
############################################################
def ConvertByValueReturnType(self, ret, args_spec):
if self.TypeNeedsWrapping(ret, array_dims=[]):
args_spec = [(ret, '_struct_result', [], None)] + args_spec
ret2 = 'void'
wrap_return = True
else:
ret2 = ret
wrap_return = False
return wrap_return, ret2, args_spec
def ConvertByValueArguments(self, args_spec):
args = []
for type_str, name, array_dims, more_args in args_spec:
if self.TypeNeedsWrapping(type_str, array_dims):
type_str += '*'
args.append((type_str, name, array_dims, more_args))
return args
def FormatArgs(self, c_operator, args_spec):
args = []
for type_str, name, array_dims, more_args in args_spec:
if self.TypeNeedsWrapping(type_str, array_dims):
args.append(c_operator + name)
else:
args.append(name)
return ', '.join(args)
def GenerateWrapperForPPBMethod(self, iface, member):
result = []
func_prefix = self.WrapperMethodPrefix(iface.node, iface.release)
ret, name, array, cspec = self.cgen.GetComponents(
member, iface.release, 'store')
wrap_return, ret2, cspec2 = self.ConvertByValueReturnType(ret, cspec)
cspec2 = self.ConvertByValueArguments(cspec2)
sig = self.cgen.Compose(ret2,
name,
array,
cspec2,
prefix=func_prefix,
func_as_ptr=False,
include_name=True,
unsized_as_ptr=False)
result.append('static %s {\n' % sig)
result.append(' const struct %s *iface = %s.real_iface;\n' %
(iface.struct_name, self.GetWrapperInfoName(iface)))
return_prefix = ''
if wrap_return:
return_prefix = '*_struct_result = '
elif ret != 'void':
return_prefix = 'return '
result.append(
' %siface->%s(%s);\n}\n\n' %
(return_prefix, member.GetName(), self.FormatArgs('*', cspec)))
return result
def GenerateWrapperForPPPMethod(self, iface, member):
result = []
func_prefix = self.WrapperMethodPrefix(iface.node, iface.release)
sig = self.cgen.GetSignature(member, iface.release, 'store',
func_prefix, False)
result.append('static %s {\n' % sig)
result.append(' const struct %s *iface = %s.real_iface;\n' %
(iface.struct_name, self.GetWrapperInfoName(iface)))
ret, name, array, cspec = self.cgen.GetComponents(
member, iface.release, 'store')
wrap_return, ret2, cspec = self.ConvertByValueReturnType(ret, cspec)
cspec2 = self.ConvertByValueArguments(cspec)
temp_fp = self.cgen.Compose(ret2,
name,
array,
cspec2,
prefix='temp_fp',
func_as_ptr=True,
include_name=False,
unsized_as_ptr=False)
cast = self.cgen.Compose(ret2,
name,
array,
cspec2,
prefix='',
func_as_ptr=True,
include_name=False,
unsized_as_ptr=False)
result.append(' %s =\n ((%s)iface->%s);\n' %
(temp_fp, cast, member.GetName()))
return_prefix = ''
if wrap_return:
result.append(' %s _struct_result;\n' % ret)
elif ret != 'void':
return_prefix = 'return '
result.append(' %stemp_fp(%s);\n' %
(return_prefix, self.FormatArgs('&', cspec)))
if wrap_return:
result.append(' return _struct_result;\n')
result.append('}\n\n')
return result
def GenerateRange(self, ast, releases, options):
"""Generate shim code for a range of releases.
"""
self._skip_opt = GetOption('disable_pnacl_opt')
self.SetOutputFile(GetOption('pnaclshim'))
return WrapperGen.GenerateRange(self, ast, releases, options)
class RPCGen(object):
def __init__(self):
self.cgen = CGen()
self.interfaceStructs = []
self.pppInterfaceGetters = []
def AddProp(self,
release,
s,
prefix,
member,
isOutParam=False,
callnode=None,
derefSizeIs=True):
out = ''
key = member.GetName()
if not member.InReleases([release]):
out += '/* skipping %s */\n' % key
return
type = member.GetType(release).GetName()
array = member.GetOneOf('Array')
interfaceMember = member.parent
interface = interfaceMember.parent.parent
customSerializer = getCustom(interface.GetName(),
interfaceMember.GetName(),
member.GetName())
array = customSerializer.get('array', array)
isOutParam = customSerializer.get('isOutParam', isOutParam)
if isOutParam:
out += ' AddProp(' + s + ', "' + key + '", PointerToString(' + prefix + key + '));\n'
elif array:
if customSerializer:
type = customSerializer.get('arrayType', type)
count = array.GetProperty('FIXED') if isinstance(array,
IDLNode) else None
if not count:
size_is = member.GetProperty('size_is()')
if size_is:
size_is = size_is[0]
count = prefix + size_is
if callnode:
for param in callnode.GetListOf('Param'):
if param.GetName() == size_is:
if self.cgen.GetParamMode(
param) == 'out' and derefSizeIs:
count = '*' + count
break
else:
size_as = member.GetProperty('size_as')
count = size_as
if customSerializer:
count = customSerializer.get('arraySize', count)
out += ' {\n'
out += ' BeginProp(' + s + ', "' + key + '");\n'
out += ' BeginElements(' + s + ');\n'
out += ' for (uint32_t _n = 0; '
if count:
out += '_n < ' + count
else:
sentinel = customSerializer.get('arraySentinel', '0')
out += prefix + key + '[_n] != ' + sentinel
out += '; ++_n) {\n'
out += ' AddElement(' + s + ', ToString_' + type + '(' + prefix + key + '[_n]));\n'
out += ' }\n'
out += ' EndElements(' + s + ');\n'
out += ' }\n'
else:
out += ' AddProp(' + s + ', "' + key + '", ToString_' + type + '(' + prefix + key + '));\n'
return out
def FromJSON(self, release, prefix, outvalue, node, create, callnode=None):
out = ''
type = node.GetType(release).GetName()
array = node.GetOneOf('Array')
interfaceMember = node.parent
interface = interfaceMember.parent.parent
customParser = getCustom(interface.GetName(),
interfaceMember.GetName(), node.GetName())
array = customParser.get('array', array)
create = customParser.get('create', create)
name = node.GetName()
outvalue = prefix + outvalue
if array:
if customParser:
type = customParser.get('arrayType', type)
fixed = array.GetProperty('FIXED') if isinstance(array,
IDLNode) else None
count = fixed
if type == 'char':
assert count > 0
out += ' FromJSON_charArray(iterator, ' + outvalue + ', ' + str(
count) + ');\n'
else:
if not count:
size_is = node.GetProperty('size_is()')
if size_is:
size_is = size_is[0]
count = prefix + size_is
if callnode:
for param in callnode.GetListOf('Param'):
if param.GetName() == size_is:
if self.cgen.GetParamMode(param) == 'out':
count = '*' + count
break
else:
size_as = node.GetProperty('size_as')
count = size_as
if customParser:
count = customParser.get('arraySize', count)
out += '\n'
out += ' {\n'
out += ' size_t children = iterator.expectArrayAndGotoFirstItem();\n'
if count:
out += ' if (children > ' + count + ') {\n'
out += ' Fail("Too many items in array\\n", "");\n'
out += ' }\n'
if create and not fixed:
if not count:
count = 'children'
out += ' ' + outvalue + ' = new ' + self.cgen.GetTypeByMode(
node, release, 'store') + '[' + count + '];\n'
out += ' for (uint32_t _n = 0; _n < children; ++_n) {\n'
out += ' FromJSON_' + type + '(iterator, (' + outvalue + ')[_n]);\n'
out += ' }\n'
out += ' // FIXME Null out remaining items?\n'
out += ' }\n'
else:
out += ' FromJSON_' + type + '(iterator, ' + outvalue + ');\n'
return out
def MemberFromJSON(self, release, prefix, member, create):
key = member.GetName()
if not member.InReleases([release]):
return '/* skipping %s */\n' % key
return self.FromJSON(release, prefix, key, member, create)
DerefOutType = {
'Array': {
'out': '*'
},
'Enum': '*',
'Struct': '*',
'cstr_t': '*',
'TypeValue': '*',
}
def DefineInterfaceMethodSerializer(self, iface, releases, node, release):
customSerializer = getCustom(iface.GetName(), node.GetName(), None)
if not node.InReleases([release]):
return '/* skipping %s */\n' % node.GetName()
if customSerializer and customSerializer.get('skip', False):
return self.cgen.GetSignature(node,
release,
'ref',
'',
func_as_ptr=False,
include_version=True) + ";\n"
out = ''
out += 'static '
out += self.cgen.GetSignature(node,
release,
'ref',
'',
func_as_ptr=False,
include_version=True)
out += ' {\n'
out += ' stringstream ss;\n'
out += ' BeginProps(ss);\n'
out += ' AddProp(ss, "__interface", "\\"' + iface.GetName(
) + '\\"");\n'
out += ' AddProp(ss, "__version", "\\"' + iface.GetVersion(
release) + '\\"");\n'
out += ' AddProp(ss, "__method", "\\"' + node.GetName() + '\\"");\n'
callnode = node.GetOneOf('Callspec')
hasOutParams = False
if callnode:
for param in callnode.GetListOf('Param'):
mode = self.cgen.GetParamMode(param)
ntype, mode = self.cgen.GetRootTypeMode(param, release, mode)
mode = getCustom(param.parent.parent.parent.GetName(),
param.parent.GetName(),
param.GetName()).get('mode', mode)
if mode == "out" or mode == "inout":
hasOutParams = hasOutParams or not (ntype == 'mem_t'
and mode == "inout")
out += self.AddProp(release, 'ss', '', param, mode == "out",
callnode)
out += ' EndProps(ss);\n'
if node.GetProperty('ref'):
mode = 'ref'
else:
mode = 'store'
rtype = self.cgen.GetTypeByMode(node.GetType(release), release,
'store')
out += '#ifndef INTERPOSE\n'
out += ' '
if rtype != 'void' or hasOutParams:
out += 'string json = RPCWithResult'
else:
out += 'RPC'
if customSerializer and customSerializer.get('maybeNonMainThread',
False):
out += '<MaybeNonMainThread>'
else:
out += '<MainThreadOnly>'
out += '(ss);\n'
if rtype != 'void' or hasOutParams:
if rtype != 'void':
out += ' ' + rtype + ' rval;\n'
out += ' JSONIterator iterator(json);\n'
out += ' iterator.expectArrayAndGotoFirstItem();\n'
if hasOutParams:
out += ' iterator.expectArrayAndGotoFirstItem();\n'
if rtype != 'void':
customRval = getCustom(iface.GetName(), node.GetName(),
"rval").get('convert')
if customRval:
out += customRval
else:
out += ' FromJSON_' + node.GetType(
release).GetName() + '(iterator, rval);\n'
if hasOutParams:
out += ' iterator.expectObjectAndGotoFirstProperty();\n'
for param in callnode.GetListOf('Param'):
mode = self.cgen.GetParamMode(param)
ntype, mode = self.cgen.GetRootTypeMode(
param, release, mode)
mode = getCustom(param.parent.parent.parent.GetName(),
param.parent.GetName(),
param.GetName()).get('mode', mode)
if mode == "out" or mode == "inout":
if ntype == 'mem_t' and mode == "inout":
continue
if ntype == 'Struct' and mode == 'out':
out += ' if (!!' + param.GetName() + ') {\n'
to_indent = ' iterator.skip();\n'
deref = self.DerefOutType.get(ntype, '')
if isinstance(deref, dict):
deref = deref.get(mode, '')
to_indent += self.FromJSON(release, '',
deref + param.GetName(),
param, mode == 'out',
callnode)
if ntype == 'Struct' and mode == 'out':
out += re.sub(r"(^|\n)(?!(\n|$))",
r'\1' + (2 * ' '), to_indent)
out += ' }\n'
else:
out += to_indent
if rtype != 'void':
out += ' return rval;\n'
out += '#else // !INTERPOSE\n'
out += ' printf("%s\\n", ss.str().c_str());\n'
#out += ' printf("Calling: %p\\n", RealGetInterface("' + self.cgen.GetInterfaceString(iface, iface.GetVersion(release)) + '"));\n'
#out += ' printf(" -> %p\\n", ((' + self.cgen.GetStructName(iface, release, include_version=True) + '*)RealGetInterface("' + self.cgen.GetInterfaceString(iface, iface.GetVersion(release)) + '"))->' + node.GetName() + ');\n'
out += ' '
rtype = self.cgen.GetTypeByMode(node.GetType(release), release,
'return')
params = []
for param in callnode.GetListOf('Param'):
mode = self.cgen.GetParamMode(param)
ntype, mode = self.cgen.GetRootTypeMode(param, release, mode)
if mode == "in" and param.GetType(
release).GetName() == 'PP_CompletionCallback':
out += 'PP_CompletionCallback logging_' + param.GetName(
) + ';\n'
out += ' logging_' + param.GetName(
) + '.func = &Logging_PP_CompletionCallback;\n'
out += ' logging_' + param.GetName(
) + '.user_data = new PP_CompletionCallback(' + param.GetName(
) + ');\n'
out += ' logging_' + param.GetName(
) + '.flags = ' + param.GetName() + '.flags;\n'
out += ' '
params.append('logging_' + param.GetName())
elif mode == "in" and param.GetType(
release).GetName() == 'PPP_Class_Deprecated':
out += 'Logging_PPP_Class_Deprecated_holder* logging_' + param.GetName(
) + ' = new Logging_PPP_Class_Deprecated_holder();\n'
out += ' logging_' + param.GetName(
) + '->_real_PPP_Class_Deprecated = ' + param.GetName() + ';\n'
out += ' logging_' + param.GetName(
) + '->object = object_data;\n'
out += ' object_data = logging_' + param.GetName() + ';\n'
out += ' '
params.append('&_interpose_PPP_Class_Deprecated_1_0')
elif mode == "return" and param.GetType(release).GetName(
) == 'PPB_Audio_Callback' and param.GetVersion(release) == "1.0":
out += 'Logging_PPB_Audio_Callback_1_0_holder* ' + param.GetName(
) + '_holder = new Logging_PPB_Audio_Callback_1_0_holder();\n'
out += ' ' + param.GetName(
) + '_holder->func = ' + param.GetName() + ';\n'
out += ' ' + param.GetName(
) + '_holder->user_data = user_data;\n'
out += ' user_data = ' + param.GetName() + '_holder;\n'
out += ' '
params.append('Logging_PPB_Audio_Callback_1_0')
else:
params.append(param.GetName())
if rtype != 'void':
out += rtype + ' rval = '
out += '((' + self.cgen.GetStructName(
iface, release, include_version=True
) + '*)RealGetInterface("' + self.cgen.GetInterfaceString(
iface, iface.GetVersion(release)) + '"))->' + node.GetName(
) + '(' + ', '.join(params) + ');\n'
if rtype != 'void' or hasOutParams:
out += ' printf("RPC response: [");\n'
if hasOutParams:
out += ' printf("[");\n'
if rtype != 'void':
out += ' printf("%s", ToString_' + node.GetType(
release).GetName() + '(rval).c_str());\n'
if hasOutParams:
if rtype != 'void':
out += ' printf(",");\n'
out += ' std::stringstream os;\n'
out += ' BeginProps(os);\n'
for param in callnode.GetListOf('Param'):
mode = self.cgen.GetParamMode(param)
ntype, mode = self.cgen.GetRootTypeMode(
param, release, mode)
if mode == "out" or mode == "inout":
if mode == "out" and (ntype == 'Struct'
or ntype == 'TypeValue'):
out += ' if (!!' + param.GetName() + ') {\n'
out += self.AddProp(release, 'os', '', param, False,
callnode)
if mode == "out" and (ntype == 'Struct'
or ntype == 'TypeValue'):
out += ' }\n'
out += ' EndProps(os);\n'
out += ' printf("%s]", os.str().c_str());\n'
out += ' printf("]\\n");\n'
if rtype != 'void':
out += ' return rval;\n'
out += '#endif // !INTERPOSE\n'
out += '}\n'
return out
def DefineInterfaceMethodParser(self, iface, releases, node, release):
if not node.InReleases([release]):
return '/* skipping %s */\n' % node.GetName()
version = self.GetNodeName(iface, release, releases)
out = ''
out += 'char* Call_%s_%s(const %s* _interface, JSONIterator& iterator) {\n' % (
iface.GetName(), node.GetName(), version)
callnode = node.GetOneOf('Callspec')
params = []
hasOutParams = False
for param in callnode.GetListOf('Param'):
mode = self.cgen.GetParamMode(param)
ptype, pname, parray, pspec = self.cgen.GetComponents(
param, release, "store")
out += ' ' + self.cgen.Compose(ptype,
pname,
parray,
pspec,
'',
func_as_ptr=True,
include_name=True,
unsized_as_ptr=True) + ';\n'
if mode == 'out':
if len(parray) > 0:
out += ' iterator.skip();\n'
out += ' PointerValueFromJSON(iterator, ' + pname + ');\n'
else:
out += ' iterator.skip();\n'
out += self.FromJSON(release, '', pname, param, True, callnode)
hasOutParams = hasOutParams or mode == "out" or mode == "inout"
if node.GetProperty('ref'):
mode = 'ref'
else:
mode = 'store'
rtype = self.cgen.GetTypeByMode(node.GetType(release), release,
'store')
out += ' '
if rtype != 'void':
out += rtype + ' rval;\n'
out += ' rval = '
params = []
for param in callnode.GetListOf('Param'):
mode = self.cgen.GetParamMode(param)
ntype, mode = self.cgen.GetRootTypeMode(param, release, mode)
ptype, pname, parray, pspec = self.cgen.GetComponents(
param, release, mode)
if mode == 'out' or ntype == 'Struct' or (mode == 'constptr_in' and
ntype == 'TypeValue'):
pname = '&' + pname
pname = '(' + self.cgen.Compose(ptype,
pname,
parray,
pspec,
'',
func_as_ptr=True,
include_name=False,
unsized_as_ptr=True) + ')' + pname
params.append(pname)
out += '_interface->' + node.GetName() + '(' + ", ".join(
params) + ');\n'
if rtype != 'void' or hasOutParams:
typeref = node.GetType(release)
if hasOutParams:
out += ' stringstream os;\n'
out += ' BeginElements(os);\n'
if rtype != 'void':
out += ' AddElement(os, ToString_' + typeref.GetName(
) + '(rval).c_str());\n'
out += ' BeginElement(os);\n'
out += ' BeginProps(os);\n'
for param in callnode.GetListOf('Param'):
mode = self.cgen.GetParamMode(param)
ntype, mode = self.cgen.GetRootTypeMode(
param, release, mode)
ptype, pname, parray, pspec = self.cgen.GetComponents(
param, release, mode)
if mode == 'out' or mode == 'inout':
out += self.AddProp(release,
'os',
'',
param,
False,
callnode,
derefSizeIs=False)
out += ' EndProps(os);\n'
out += ' EndElements(os);\n'
out += ' return strdup(os.str().c_str());\n'
else:
out += ' return strdup(ToString_' + typeref.GetName(
) + '(rval).c_str());\n'
else:
out += ' return nullptr;\n'
out += '}\n'
return out
def DefineInterface(self, node, releases, declareOnly):
out = ''
if node.GetName() == "PPB_NaCl_Private":
# skip
return out
isPPP = node.GetName()[0:4] == "PPP_"
build_list = node.GetUniqueReleases(releases)
for release in build_list:
name = self.cgen.GetStructName(node, release, include_version=True)
if declareOnly:
out += '#ifdef INTERPOSE\n'
out += 'static ' + name + ' *_real_' + name + ';\n'
out += '#endif // INTERPOSE\n'
if isPPP:
version = self.GetNodeName(node, release, build_list)
if declareOnly:
out += 'static char* Call_%s(void* _interface, JSONIterator& iterator);\n' % (
version)
continue
members = node.GetListOf('Member')
for member in members:
out += self.DefineInterfaceMethodParser(
node, build_list, member, release)
out += 'char* Call_%s(const void* _interface, JSONIterator& iterator) {\n' % (
version)
out += ' iterator.skip();\n'
out += ' const Token& member = iterator.getCurrentStringAndGotoNext();\n'
out += ' string memberName = member.value();\n'
for member in members:
if not member.InReleases([release]):
out += '/* skipping %s */\n' % member.GetName()
continue
out += ' if (!memberName.compare("' + member.GetName(
) + '")) {\n'
out += ' return Call_' + node.GetName(
) + '_' + member.GetName(
) + '((const ' + version + '*)_interface, iterator);\n'
out += ' }\n'
out += ' return nullptr;\n'
out += '}\n'
self.pppInterfaceGetters.append(
(self.cgen.GetInterfaceString(node,
node.GetVersion(release)),
'Call_' + version))
continue
version = self.cgen.GetStructName(node,
release,
include_version=True)
if declareOnly:
out += 'const string ToString_%s(const %s *v);\n' % (
node.GetName(), version)
continue
ns = 'ns_' + version
out += 'namespace ' + ns + ' {\n'
members = node.GetListOf('Member')
for member in members:
out += self.DefineInterfaceMethodSerializer(
node, releases, member, release)
out += '}\n'
self.interfaceStructs.append(
(self.cgen.GetInterfaceString(node, node.GetVersion(release)),
'_' + name))
out += 'static ' + name + ' _' + name + ' = {\n'
for member in members:
if not member.InReleases([release]):
continue
memberName = self.cgen.GetStructName(member, release, True)
out += ' ' + ns + '::' + memberName + ',\n'
out += '};\n'
out += 'const string ToString_%s(const %s *v) {\n' % (
node.GetName(), version)
out += ' stringstream s;\n'
out += ' s << v;\n'
out += ' return s.str();\n'
out += '}\n'
return out
def GetNodeName(self, node, release, build_list):
return self.cgen.GetStructName(
node, release, include_version=(release != build_list[-1]))
@staticmethod
def SerializerAndParserSignatures(typename, type):
s = ('const string ToString_%s(const %s *v)',
'const string ToString_%s(const %s &v)',
'void FromJSON_%s(JSONIterator& iterator, %s &value)')
return (sig % (typename, type) for sig in s)
def DefineTypedefSerializerAndParser(self, node, releases, declareOnly):
out = ''
build_list = node.GetUniqueReleases(releases)
for release in build_list:
type = self.GetNodeName(node, release, build_list)
typeref = node.GetType(release)
(toStringFromPointer, toStringFromRef,
fromJSONToRef) = self.SerializerAndParserSignatures(
node.GetName(), type)
isFuncPtr = node.GetOneOf('Callspec')
if declareOnly:
if not isFuncPtr:
out += toStringFromPointer + ";\n"
out += toStringFromRef + ";\n"
out += fromJSONToRef + ";\n"
continue
if not isFuncPtr:
out += toStringFromPointer + ' {\n'
out += ' return ToString_%s(v);\n' % (typeref.GetName())
out += '}\n'
out += toStringFromRef + ' {\n'
if isFuncPtr:
out += ' return PointerToString(v);\n'
else:
out += ' return ToString_%s(&v);\n' % (node.GetName())
out += '}\n'
out += fromJSONToRef + ' {\n'
if isFuncPtr:
out += ' PointerValueFromJSON(iterator, value);\n'
else:
out += ' FromJSON_%s(iterator, value);\n' % (
typeref.GetName())
out += '}\n'
return out
def DefineStructSerializerAndParser(self, node, releases, declareOnly):
out = ''
build_list = node.GetUniqueReleases(releases)
for release in build_list:
name = node.GetName()
version = self.GetNodeName(node, release, build_list)
(toStringFromPointer, toStringFromRef,
fromJSONToRef) = self.SerializerAndParserSignatures(
name, version)
if declareOnly:
out += toStringFromPointer + ";\n"
out += toStringFromRef + ";\n"
out += fromJSONToRef + ";\n"
continue
out += toStringFromPointer + ' {\n'
out += ' if (!v) {\n'
out += ' return "null";\n'
out += ' }\n'
out += ' return ToString_%s(*v);\n' % (name)
out += '}\n'
out += toStringFromRef + ' {\n'
out += ' stringstream x;\n'
out += ' BeginProps(x);\n'
members = node.GetListOf('Member')
for member in members:
out += self.AddProp(release, 'x', 'v.', member)
out += ' EndProps(x);\n'
out += ' return x.str();\n'
out += '}\n'
out += fromJSONToRef + ' {\n'
out += ' const JSON::Token& current = iterator.getCurrentAndGotoNext();\n'
# FIXME Should we warn here somehow? It might be ok to return null in
# error conditions, so maybe not.
out += ' if (current.isPrimitive() && !current.value().compare("null")) {\n'
out += ' return;\n'
out += ' }\n'
out += ' if (!current.isObject()) {\n'
out += ' Fail("Expected object!", "");\n'
out += ' }\n'
if node.GetProperty('union'):
out += ' string name = iterator.getCurrentStringAndGotoNext().value();\n'
out += " else ".join(
map(
lambda m: ' if (!name.compare(\"' + m.GetName(
) + '\")) {\n ' + self.MemberFromJSON(
release, 'value.', m, False) + ' }',
members)) + "\n"
else:
for member in members:
typeref = member.GetType(release)
out += ' iterator.skip();\n'
out += self.MemberFromJSON(release, 'value.', member,
False)
out += '}\n'
return out
def DefineEnumSerializerAndParser(self, node, releases, declareOnly):
if node.GetProperty('unnamed'):
return ''
out = ''
name = node.GetName()
(toStringFromPointer, toStringFromRef,
fromJSONToRef) = self.SerializerAndParserSignatures(name, name)
if declareOnly:
out += toStringFromPointer + ";\n"
out += toStringFromRef + ";\n"
out += fromJSONToRef + ";\n"
return out
out += toStringFromPointer + ' {\n'
out += ' switch (*v) {\n'
next = 0
emitted = set()
for child in node.GetListOf('EnumItem'):
value = child.GetName()
label = child.GetProperty('VALUE')
if not label:
label = str(next)
next = next + 1
if label in emitted:
continue
emitted.add(label)
emitted.add(value)
out += ' case ' + label + ':\n'
out += ' return "\\"' + value + '\\"";\n'
out += ' default:\n'
out += ' return "\\"???\\"";\n'
out += ' }\n'
out += '}\n'
out += toStringFromRef + ' {\n'
out += ' return ToString_%s(&v);\n' % (name)
out += '}\n'
out += fromJSONToRef + ' {\n'
out += ' long int v;\n'
out += ' FromJSON_int(iterator, v);\n'
out += ' value = %s(v);\n' % (name)
out += '}\n'
return out
def Define(self, node, releases, declareOnly):
# Skip if this node is not in this release
if not node.InReleases(releases):
return "/* skipping %s */\n" % node
if node.IsA('Typedef'):
return self.DefineTypedefSerializerAndParser(
node, releases, declareOnly)
if node.IsA('Struct'):
return self.DefineStructSerializerAndParser(
node, releases, declareOnly)
if node.IsA('Enum'):
return self.DefineEnumSerializerAndParser(node, releases,
declareOnly)
if node.IsA('Interface'):
return self.DefineInterface(node, releases, declareOnly)
return ''
