/usr/share/pyshared/pygccxml/parser/scanner.py is in python-pygccxml 1.0.0-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Distributed under the Boost Software License, Version 1.0. (See
# accompanying file LICENSE_1_0.txt or copy at
# http://www.boost.org/LICENSE_1_0.txt)
import os
import types
import pprint
import xml.sax
import warnings
import xml.sax.handler
from pygccxml.declarations import *
from pygccxml import utils
##convention
#XML_NN - XML Node Name
#XML_AN - XML Attribute Name
#also those constants are sorted for easy searching.
XML_AN_ABSTRACT = "abstract"
XML_AN_ACCESS = "access"
XML_AN_ALIGN = "align"
XML_AN_ARTIFICIAL = "artificial"
XML_AN_ATTRIBUTES = "attributes"
XML_AN_BASE_TYPE = "basetype"
XML_AN_BASES = "bases"
XML_AN_BITS = "bits"
XML_AN_CONST = "const"
XML_AN_CONTEXT = "context"
XML_AN_CVS_REVISION = "cvs_revision"
XML_AN_DEFAULT = "default"
XML_AN_DEMANGLED = "demangled"
XML_AN_EXTERN = "extern"
XML_AN_FILE = "file"
XML_AN_ID = "id"
XML_AN_INCOMPLETE = "incomplete"
XML_AN_INIT = "init"
XML_AN_LINE = "line"
XML_AN_MANGLED = "mangled"
XML_AN_MAX = "max"
XML_AN_MEMBERS = "members"
XML_AN_MUTABLE = "mutable"
XML_AN_NAME = "name"
XML_AN_OFFSET = "offset"
XML_AN_PURE_VIRTUAL = "pure_virtual"
XML_AN_RESTRICT = "restrict"
XML_AN_RETURNS = "returns"
XML_AN_SIZE = "size"
XML_AN_STATIC = "static"
XML_AN_THROW = "throw"
XML_AN_TYPE = "type"
XML_AN_VIRTUAL = "virtual"
XML_AN_VOLATILE = "volatile"
XML_NN_ARGUMENT = "Argument"
XML_NN_ARRAY_TYPE = "ArrayType"
XML_NN_CASTING_OPERATOR = "Converter"
XML_NN_CLASS = "Class"
XML_NN_CONSTRUCTOR = "Constructor"
XML_NN_CV_QUALIFIED_TYPE = "CvQualifiedType"
XML_NN_DESTRUCTOR = "Destructor"
XML_NN_ELLIPSIS = "Ellipsis"
XML_NN_ENUMERATION = "Enumeration"
XML_NN_ENUMERATION_VALUE = "EnumValue"
XML_NN_FIELD = "Field"
XML_NN_FILE = "File"
XML_NN_FUNCTION = "Function"
XML_NN_FUNCTION_TYPE = "FunctionType"
XML_NN_FUNDAMENTAL_TYPE = "FundamentalType"
XML_NN_FREE_OPERATOR = "OperatorFunction"
XML_NN_GCC_XML = "GCC_XML"
XML_NN_MEMBER_OPERATOR = "OperatorMethod"
XML_NN_METHOD = "Method"
XML_NN_METHOD_TYPE = "MethodType"
XML_NN_NAMESPACE = "Namespace"
XML_NN_OFFSET_TYPE = "OffsetType"
XML_NN_POINTER_TYPE = "PointerType"
XML_NN_REFERENCE_TYPE = "ReferenceType"
XML_NN_ROOT = "GCC_XML"
XML_NN_STRUCT = "Struct"
XML_NN_TYPEDEF = "Typedef"
XML_NN_UNION = "Union"
XML_NN_VARIABLE = "Variable"
class scanner_t( xml.sax.handler.ContentHandler ):
def __init__(self, gccxml_file, decl_factory, *args ):
xml.sax.handler.ContentHandler.__init__(self, *args )
self.logger = utils.loggers.gccxml
self.gccxml_file = gccxml_file
#defining parsing tables
self.__readers = {
XML_NN_FILE : self.__read_file
, XML_NN_NAMESPACE : self.__read_namespace
, XML_NN_ENUMERATION : self.__read_enumeration
, XML_NN_ENUMERATION_VALUE : self.__read_enumeration_value
, XML_NN_ARRAY_TYPE : self.__read_array_type
, XML_NN_CV_QUALIFIED_TYPE : self.__read_cv_qualified_type
, XML_NN_POINTER_TYPE : self.__read_pointer_type
, XML_NN_REFERENCE_TYPE : self.__read_reference_type
, XML_NN_FUNDAMENTAL_TYPE : self.__read_fundamental_type
, XML_NN_ARGUMENT : self.__read_argument
, XML_NN_FUNCTION_TYPE : self.__read_function_type
, XML_NN_METHOD_TYPE : self.__read_method_type
, XML_NN_OFFSET_TYPE : self.__read_offset_type
, XML_NN_TYPEDEF : self.__read_typedef
, XML_NN_VARIABLE : self.__read_variable
, XML_NN_CLASS : self.__read_class
, XML_NN_STRUCT : self.__read_struct
, XML_NN_UNION : self.__read_union
, XML_NN_FIELD : self.__read_field
, XML_NN_CASTING_OPERATOR : self.__read_casting_operator
, XML_NN_CONSTRUCTOR : self.__read_constructor
, XML_NN_DESTRUCTOR : self.__read_destructor
, XML_NN_FUNCTION : self.__read_function
, XML_NN_FREE_OPERATOR : self.__read_free_operator
, XML_NN_MEMBER_OPERATOR : self.__read_member_operator
, XML_NN_METHOD : self.__read_method
, XML_NN_GCC_XML : self.__read_version
, XML_NN_ELLIPSIS : self.__read_ellipsis
}
self.deep_declarations = [
XML_NN_CASTING_OPERATOR
, XML_NN_CONSTRUCTOR
, XML_NN_DESTRUCTOR
, XML_NN_ENUMERATION
, XML_NN_FILE
, XML_NN_FUNCTION
, XML_NN_FREE_OPERATOR
, XML_NN_MEMBER_OPERATOR
, XML_NN_METHOD
, XML_NN_FUNCTION_TYPE
, XML_NN_METHOD_TYPE
]
assert isinstance( decl_factory, decl_factory_t )
self.__decl_factory = decl_factory
#mapping from id -> decl
self.__declarations = {}
#list of all read declarations
self.__calldefs = []
#list of enums I need later
self.__enums = []
#mapping from id -> type
self.__types = {}
#mapping from id -> file
self.__files = {}
#mapping between decl id -> access
self.__access = {}
#current object under construction
self.__inst = None
#mapping from id to members
self.__members = {}
self.__compiler = None
def read( self ):
xml.sax.parse( self.gccxml_file, self )
def endDocument( self ):
#updating membership
members_mapping = {}
for gccxml_id, members in self.__members.iteritems():
decl = self.__declarations.get( gccxml_id, None )
if not decl or not isinstance( decl, scopedef_t):
continue
members_mapping[ id( decl ) ] = members
self.__members = members_mapping
def declarations(self):
return self.__declarations
def calldefs( self ):
return self.__calldefs
def enums(self):
return self.__enums
def types(self):
return self.__types
def files(self):
return self.__files
def access(self):
return self.__access
def members(self):
return self.__members
def startElementNS(self, name, qname, attrs):
return self.startElement( name[1], attrs )
def endElementNS(self, name, qname):
return self.endElement( name[1] )
def startElement(self, name, attrs):
try:
if name not in self.__readers:
return
obj = self.__readers[name]( attrs )
if not obj:
return #it means that we worked on internals
#for example EnumValue of function argument
if name in self.deep_declarations:
self.__inst = obj
self.__read_access( attrs )
element_id = attrs.get(XML_AN_ID, None)
if isinstance( obj, declaration_t ):
obj.compiler = self.__compiler
self.__update_membership( attrs )
self.__declarations[ element_id ] = obj
if not isinstance( obj, namespace_t ):
self.__read_location( obj, attrs )
if isinstance( obj, class_t):
self.__read_bases( obj, attrs )
self.__read_artificial(obj, attrs)
self.__read_mangled( obj, attrs)
self.__read_demangled( obj, attrs)
self.__read_attributes(obj, attrs)
elif isinstance( obj, type_t ):
self.__types[ element_id ] = obj
self.__read_byte_size(obj, attrs)
self.__read_byte_align(obj, attrs)
elif isinstance( obj, types.StringTypes ):
self.__files[ element_id ] = obj
else:
self.logger.warning( 'Unknown object type has been found.'
+ ' Please report this bug to pygccxml development team.' )
except Exception, error:
msg = 'error occured, while parsing element with name "%s" and attrs "%s".'
msg = msg + os.linesep + 'Error: %s.' % str( error )
self.logger.error( msg % ( name, pprint.pformat( attrs.keys() ) ) )
raise
def endElement(self, name):
if name in self.deep_declarations:
self.__inst = None
def __read_location(self, decl, attrs):
decl.location = location_t( file_name=attrs[XML_AN_FILE], line=int(attrs[XML_AN_LINE]))
def __update_membership(self, attrs):
parent = attrs.get( XML_AN_CONTEXT, None )
if not parent:
return
if not self.__members.has_key( parent ):
self.__members[ parent ] = []
self.__members[parent].append( attrs[XML_AN_ID] )
def __read_members(self, decl, attrs ):
decl.declarations = attrs.get(XML_AN_MEMBERS, "")
def __read_bases(self, decl, attrs ):
decl.bases = attrs.get( XML_AN_BASES, "" )
def __read_artificial( self, decl, attrs ):
decl.is_artificial = attrs.get( XML_AN_ARTIFICIAL, False )
def __read_mangled( self, decl, attrs ):
decl.mangled = attrs.get( XML_AN_MANGLED, None )
def __read_demangled( self, decl, attrs ):
decl.demangled = attrs.get( XML_AN_DEMANGLED, None )
def __read_attributes( self, decl, attrs ):
decl.attributes = attrs.get( XML_AN_ATTRIBUTES, None )
def __read_access( self, attrs ):
self.__access[ attrs[XML_AN_ID] ] = attrs.get( XML_AN_ACCESS, ACCESS_TYPES.PUBLIC )
def __read_byte_size (self, decl, attrs):
"Using duck typing to set the size instead of in constructor"
size = attrs.get(XML_AN_SIZE, 0)
decl.byte_size = int(size)/8 # Make sure the size is in bytes instead of bits
def __read_byte_offset (self, decl, attrs):
"Using duck typing to set the offset instead of in constructor"
offset = attrs.get(XML_AN_OFFSET, 0)
decl.byte_offset = int(offset)/8 # Make sure the size is in bytes instead of bits
def __read_byte_align (self, decl, attrs):
"Using duck typing to set the alignment"
align = attrs.get(XML_AN_ALIGN, 0)
decl.byte_align = int(align)/8 # Make sure the size is in bytes instead of bits
def __read_root(self, attrs):
pass
def __read_file( self, attrs ):
return attrs.get( XML_AN_NAME, '' )
def __read_namespace(self, attrs):
ns_name = attrs.get( XML_AN_NAME, '' )
if '.' in ns_name:
#if '.' in namespace then this is mangled namespace -> in c++ namespace{...}
#that is almost true: gcc mangale name using top file name.
#almost all files has '.' in name
ns_name = ''
return self.__decl_factory.create_namespace( name=ns_name )
def __read_enumeration(self, attrs):
enum_name = attrs.get( XML_AN_NAME, '' )
if '$_' in enum_name or '._' in enum_name:
#it means that this is unnamed enum. in c++ enum{ x };
enum_name = ''
decl = self.__decl_factory.create_enumeration( name=enum_name )
self.__read_byte_size(decl, attrs)
self.__read_byte_align(decl, attrs)
self.__enums.append( decl )
return decl
def __read_enumeration_value( self, attrs ):
name = attrs.get( XML_AN_NAME, '' )
num = int(attrs[XML_AN_INIT])
self.__inst.append_value(name, num)
def __guess_int_value( self, value_as_str ):
#returns instance of int or None
#if gcc compiled the code, than it is correct!
numeric_suffix_letters = 'UuLlFf'
for s in numeric_suffix_letters:
value_as_str = value_as_str.replace( s, '' )
try:
return int( value_as_str )
except ValueError:
try:
return int( value_as_str, 16 )
except ValueError:
return None
def __read_array_type( self, attrs ):
type_ = attrs[ XML_AN_TYPE ]
size = self.__guess_int_value( attrs.get(XML_AN_MAX, '' ) )
if size is None:
size = array_t.SIZE_UNKNOWN
msg = 'unable to find out array size from expression "%s"' % attrs[ XML_AN_MAX ]
warnings.warn( msg )
return array_t( type_, size + 1 )
def __read_cv_qualified_type( self, attrs ):
if attrs.has_key( XML_AN_CONST ):
return const_t( attrs[XML_AN_TYPE] )
elif attrs.has_key( XML_AN_VOLATILE ):
return volatile_t( attrs[XML_AN_TYPE] )
elif attrs.has_key( XML_AN_RESTRICT ):
return restrict_t( attrs[XML_AN_TYPE] )
else:
assert 0
def __read_pointer_type( self, attrs ):
return pointer_t( attrs[XML_AN_TYPE] )
def __read_reference_type( self, attrs ):
return reference_t( attrs[XML_AN_TYPE] )
def __read_fundamental_type(self, attrs ):
try:
return FUNDAMENTAL_TYPES[ attrs.get( XML_AN_NAME, '' ) ]
except KeyError:
raise RuntimeError( "pygccxml error: unable to find fundamental type with name '%s'."
% attrs.get( XML_AN_NAME, '' ) )
def __read_offset_type( self,attrs ):
base = attrs[ XML_AN_BASE_TYPE ]
type_ = attrs[ XML_AN_TYPE ]
if '0.9' in self.__compiler:
return pointer_t( member_variable_type_t( class_inst=base, variable_type=type_ ) )
else:
return member_variable_type_t( class_inst=base, variable_type=type_ )
def __read_argument( self, attrs ):
if isinstance( self.__inst, calldef_type_t ):
self.__inst.arguments_types.append( attrs[XML_AN_TYPE] )
else:
argument = argument_t()
argument.name = attrs.get( XML_AN_NAME, 'arg%d' % len(self.__inst.arguments) )
argument.type = attrs[XML_AN_TYPE]
argument.default_value = attrs.get( XML_AN_DEFAULT, None )
self.__read_attributes( argument, attrs )
if argument.default_value == '<gccxml-cast-expr>':
argument.default_value = None
self.__inst.arguments.append( argument )
def __read_ellipsis( self, attrs ):
if isinstance( self.__inst, calldef_type_t ):
self.__inst.arguments_types.append( '...' )
else:
argument = argument_t( type='...' )
self.__inst.arguments.append( argument )
def __read_calldef( self, calldef, attrs, is_declaration ):
#destructor for example doesn't have return type
calldef.return_type = attrs.get( XML_AN_RETURNS, None )
if is_declaration:
self.__calldefs.append( calldef )
calldef.name = attrs.get(XML_AN_NAME, '')
calldef.has_extern = attrs.get( XML_AN_EXTERN, False )
throw_stmt = attrs.get( XML_AN_THROW, None )
if None is throw_stmt:
calldef.does_throw = True
calldef.exceptions = []
elif "" == throw_stmt:
calldef.does_throw = False
calldef.exceptions = []
else:
calldef.does_throw = True
calldef.exceptions = throw_stmt.split()
def __read_member_function( self, calldef, attrs, is_declaration ):
self.__read_calldef( calldef, attrs, is_declaration )
calldef.has_const = attrs.get( XML_AN_CONST, False )
if is_declaration:
calldef.has_static = attrs.get( XML_AN_STATIC, False )
if attrs.has_key( XML_AN_PURE_VIRTUAL ):
calldef.virtuality = VIRTUALITY_TYPES.PURE_VIRTUAL
elif attrs.has_key( XML_AN_VIRTUAL ):
calldef.virtuality = VIRTUALITY_TYPES.VIRTUAL
else:
calldef.virtuality = VIRTUALITY_TYPES.NOT_VIRTUAL
else:
calldef.class_inst = attrs[XML_AN_BASE_TYPE]
def __read_function_type(self, attrs):
answer = free_function_type_t()
self.__read_calldef( answer, attrs, False )
return answer
def __read_method_type(self, attrs):
answer = member_function_type_t()
self.__read_member_function( answer, attrs, False )
return answer
def __read_typedef(self, attrs ):
return self.__decl_factory.create_typedef( name=attrs.get( XML_AN_NAME, '' ), type=attrs[XML_AN_TYPE])
def __read_variable(self, attrs ):
type_qualifiers = type_qualifiers_t()
type_qualifiers.has_mutable = attrs.get(XML_AN_MUTABLE, False)
type_qualifiers.has_static = attrs.get(XML_AN_EXTERN, False)
bits = attrs.get( XML_AN_BITS, None )
if bits:
bits = int( bits )
decl = self.__decl_factory.create_variable( name=attrs.get( XML_AN_NAME, '' )
, type=attrs[XML_AN_TYPE]
, type_qualifiers=type_qualifiers
, value=attrs.get( XML_AN_INIT, None )
, bits=bits)
self.__read_byte_offset(decl, attrs)
return decl
__read_field = __read_variable #just a synonim
def __read_class_impl(self, class_type, attrs):
decl = None
name = attrs.get(XML_AN_NAME, '')
if '$' in name or '.' in name:
name = ''
if attrs.has_key( XML_AN_INCOMPLETE ):
decl = self.__decl_factory.create_class_declaration(name=name)
else:
decl = self.__decl_factory.create_class( name=name, class_type=class_type )
if attrs.get( XML_AN_ABSTRACT, False ):
decl.is_abstract = True
else:
decl.is_abstract = False
self.__read_byte_size(decl, attrs)
self.__read_byte_align(decl, attrs)
return decl
def __read_class( self, attrs ):
return self.__read_class_impl( CLASS_TYPES.CLASS, attrs )
def __read_struct( self, attrs ):
return self.__read_class_impl( CLASS_TYPES.STRUCT, attrs )
def __read_union( self, attrs ):
return self.__read_class_impl( CLASS_TYPES.UNION, attrs )
def __read_casting_operator(self, attrs ):
operator = self.__decl_factory.create_casting_operator()
self.__read_member_function( operator, attrs, True )
return operator
def __read_constructor( self, attrs ):
constructor = self.__decl_factory.create_constructor()
self.__read_member_function( constructor, attrs, True )
return constructor
def __read_function(self, attrs):
gfunction = self.__decl_factory.create_free_function()
self.__read_calldef( gfunction, attrs, True )
return gfunction
def __read_method(self, attrs):
mfunction = self.__decl_factory.create_member_function()
self.__read_member_function( mfunction, attrs, True )
return mfunction
def __read_destructor(self, attrs):
destructor = self.__decl_factory.create_destructor()
self.__read_member_function( destructor, attrs, True )
destructor.name = '~' + destructor.name
return destructor
def __read_free_operator(self, attrs ):
operator = self.__decl_factory.create_free_operator()
self.__read_member_function( operator, attrs, True )
if 'new' in operator.name or 'delete' in operator.name:
operator.name = 'operator ' + operator.name
else:
operator.name = 'operator' + operator.name
return operator
def __read_member_operator(self, attrs):
operator = self.__decl_factory.create_member_operator()
self.__read_member_function( operator, attrs, True )
if 'new' in operator.name or 'delete' in operator.name:
operator.name = 'operator ' + operator.name
else:
operator.name = 'operator' + operator.name
return operator
def __read_version(self, attrs):
logger = utils.loggers.cxx_parser
version = float( attrs.get(XML_AN_CVS_REVISION, 0.6) )
if version is None:
logger.info ( 'GCCXML version - 0.6' )
self.__compiler = compilers.GCC_XML_06
elif version <= 1.114:
logger.info ( 'GCCXML version - 0.7' )
self.__compiler = compilers.GCC_XML_07
elif version in ( 1.115, 1.116, 1.117, 1.118, 1.119, 1.120, 1.121 ):
logger.info ( 'GCCXML version - 0.9 BUGGY' )
self.__compiler = compilers.GCC_XML_09_BUGGY
else:
logger.info ( 'GCCXML version - 0.9' )
self.__compiler = compilers.GCC_XML_09
|