/
Symtab.py
2159 lines (1947 loc) · 90.7 KB
/
Symtab.py
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#
# Symbol Table
#
import re
from Errors import warning, error, InternalError
from StringEncoding import EncodedString
import Options, Naming
import PyrexTypes
from PyrexTypes import py_object_type, unspecified_type
from TypeSlots import \
pyfunction_signature, pymethod_signature, \
get_special_method_signature, get_property_accessor_signature
import Code
import __builtin__ as builtins
possible_identifier = re.compile(ur"(?![0-9])\w+$", re.U).match
nice_identifier = re.compile('^[a-zA-Z0-0_]+$').match
iso_c99_keywords = set(
['auto', 'break', 'case', 'char', 'const', 'continue', 'default', 'do',
'double', 'else', 'enum', 'extern', 'float', 'for', 'goto', 'if',
'int', 'long', 'register', 'return', 'short', 'signed', 'sizeof',
'static', 'struct', 'switch', 'typedef', 'union', 'unsigned', 'void',
'volatile', 'while',
'_Bool', '_Complex'', _Imaginary', 'inline', 'restrict'])
def c_safe_identifier(cname):
# There are some C limitations on struct entry names.
if ((cname[:2] == '__'
and not (cname.startswith(Naming.pyrex_prefix)
or cname == '__weakref__'))
or cname in iso_c99_keywords):
cname = Naming.pyrex_prefix + cname
return cname
class BufferAux(object):
writable_needed = False
def __init__(self, buflocal_nd_var, rcbuf_var):
self.buflocal_nd_var = buflocal_nd_var
self.rcbuf_var = rcbuf_var
def __repr__(self):
return "<BufferAux %r>" % self.__dict__
class Entry(object):
# A symbol table entry in a Scope or ModuleNamespace.
#
# name string Python name of entity
# cname string C name of entity
# type PyrexType Type of entity
# doc string Doc string
# init string Initial value
# visibility 'private' or 'public' or 'extern'
# is_builtin boolean Is an entry in the Python builtins dict
# is_cglobal boolean Is a C global variable
# is_pyglobal boolean Is a Python module-level variable
# or class attribute during
# class construction
# is_member boolean Is an assigned class member
# is_pyclass_attr boolean Is a name in a Python class namespace
# is_variable boolean Is a variable
# is_cfunction boolean Is a C function
# is_cmethod boolean Is a C method of an extension type
# is_builtin_cmethod boolean Is a C method of a builtin type (implies is_cmethod)
# is_unbound_cmethod boolean Is an unbound C method of an extension type
# is_final_cmethod boolean Is non-overridable C method
# is_inline_cmethod boolean Is inlined C method
# is_anonymous boolean Is a anonymous pyfunction entry
# is_type boolean Is a type definition
# is_cclass boolean Is an extension class
# is_cpp_class boolean Is a C++ class
# is_const boolean Is a constant
# is_property boolean Is a property of an extension type:
# doc_cname string or None C const holding the docstring
# getter_cname string C func for getting property
# setter_cname string C func for setting or deleting property
# is_self_arg boolean Is the "self" arg of an exttype method
# is_arg boolean Is the arg of a method
# is_local boolean Is a local variable
# in_closure boolean Is referenced in an inner scope
# is_readonly boolean Can't be assigned to
# func_cname string C func implementing Python func
# func_modifiers [string] C function modifiers ('inline')
# pos position Source position where declared
# namespace_cname string If is_pyglobal, the C variable
# holding its home namespace
# pymethdef_cname string PyMethodDef structure
# signature Signature Arg & return types for Python func
# as_variable Entry Alternative interpretation of extension
# type name or builtin C function as a variable
# xdecref_cleanup boolean Use Py_XDECREF for error cleanup
# in_cinclude boolean Suppress C declaration code
# enum_values [Entry] For enum types, list of values
# qualified_name string "modname.funcname" or "modname.classname"
# or "modname.classname.funcname"
# is_declared_generic boolean Is declared as PyObject * even though its
# type is an extension type
# as_module None Module scope, if a cimported module
# is_inherited boolean Is an inherited attribute of an extension type
# pystring_cname string C name of Python version of string literal
# is_interned boolean For string const entries, value is interned
# is_identifier boolean For string const entries, value is an identifier
# used boolean
# is_special boolean Is a special method or property accessor
# of an extension type
# defined_in_pxd boolean Is defined in a .pxd file (not just declared)
# api boolean Generate C API for C class or function
# utility_code string Utility code needed when this entry is used
#
# buffer_aux BufferAux or None Extra information needed for buffer variables
# inline_func_in_pxd boolean Hacky special case for inline function in pxd file.
# Ideally this should not be necesarry.
# assignments [ExprNode] List of expressions that get assigned to this entry.
# might_overflow boolean In an arithmetic expression that could cause
# overflow (used for type inference).
# utility_code_definition For some Cython builtins, the utility code
# which contains the definition of the entry.
# Currently only supported for CythonScope entries.
# error_on_uninitialized Have Control Flow issue an error when this entry is
# used uninitialized
# cf_used boolean Entry is used
# TODO: utility_code and utility_code_definition serves the same purpose...
inline_func_in_pxd = False
borrowed = 0
init = ""
visibility = 'private'
is_builtin = 0
is_cglobal = 0
is_pyglobal = 0
is_member = 0
is_pyclass_attr = 0
is_variable = 0
is_cfunction = 0
is_cmethod = 0
is_builtin_cmethod = False
is_unbound_cmethod = 0
is_final_cmethod = 0
is_inline_cmethod = 0
is_anonymous = 0
is_type = 0
is_cclass = 0
is_cpp_class = 0
is_const = 0
is_property = 0
doc_cname = None
getter_cname = None
setter_cname = None
is_self_arg = 0
is_arg = 0
is_local = 0
in_closure = 0
from_closure = 0
is_declared_generic = 0
is_readonly = 0
pyfunc_cname = None
func_cname = None
func_modifiers = []
final_func_cname = None
doc = None
as_variable = None
xdecref_cleanup = 0
in_cinclude = 0
as_module = None
is_inherited = 0
pystring_cname = None
is_identifier = 0
is_interned = 0
used = 0
is_special = 0
defined_in_pxd = 0
is_implemented = 0
api = 0
utility_code = None
is_overridable = 0
buffer_aux = None
prev_entry = None
might_overflow = 0
fused_cfunction = None
utility_code_definition = None
in_with_gil_block = 0
from_cython_utility_code = None
error_on_uninitialized = False
cf_used = True
def __init__(self, name, cname, type, pos = None, init = None):
self.name = name
self.cname = cname
self.type = type
self.pos = pos
self.init = init
self.overloaded_alternatives = []
self.assignments = []
self.cf_assignments = []
self.cf_references = []
def __repr__(self):
return "Entry(name=%s, type=%s)" % (self.name, self.type)
def redeclared(self, pos):
error(pos, "'%s' does not match previous declaration" % self.name)
error(self.pos, "Previous declaration is here")
def all_alternatives(self):
return [self] + self.overloaded_alternatives
class Scope(object):
# name string Unqualified name
# outer_scope Scope or None Enclosing scope
# entries {string : Entry} Python name to entry, non-types
# const_entries [Entry] Constant entries
# type_entries [Entry] Struct/union/enum/typedef/exttype entries
# sue_entries [Entry] Struct/union/enum entries
# arg_entries [Entry] Function argument entries
# var_entries [Entry] User-defined variable entries
# pyfunc_entries [Entry] Python function entries
# cfunc_entries [Entry] C function entries
# c_class_entries [Entry] All extension type entries
# cname_to_entry {string : Entry} Temp cname to entry mapping
# return_type PyrexType or None Return type of function owning scope
# is_builtin_scope boolean Is the builtin scope of Python/Cython
# is_py_class_scope boolean Is a Python class scope
# is_c_class_scope boolean Is an extension type scope
# is_closure_scope boolean Is a closure scope
# is_passthrough boolean Outer scope is passed directly
# is_cpp_class_scope boolean Is a C++ class scope
# is_property_scope boolean Is a extension type property scope
# scope_prefix string Disambiguator for C names
# in_cinclude boolean Suppress C declaration code
# qualified_name string "modname" or "modname.classname"
# Python strings in this scope
# nogil boolean In a nogil section
# directives dict Helper variable for the recursive
# analysis, contains directive values.
# is_internal boolean Is only used internally (simpler setup)
is_builtin_scope = 0
is_py_class_scope = 0
is_c_class_scope = 0
is_closure_scope = 0
is_passthrough = 0
is_cpp_class_scope = 0
is_property_scope = 0
is_module_scope = 0
is_internal = 0
scope_prefix = ""
in_cinclude = 0
nogil = 0
fused_to_specific = None
def __init__(self, name, outer_scope, parent_scope):
# The outer_scope is the next scope in the lookup chain.
# The parent_scope is used to derive the qualified name of this scope.
self.name = name
self.outer_scope = outer_scope
self.parent_scope = parent_scope
mangled_name = "%d%s_" % (len(name), name)
qual_scope = self.qualifying_scope()
if qual_scope:
self.qualified_name = qual_scope.qualify_name(name)
self.scope_prefix = qual_scope.scope_prefix + mangled_name
else:
self.qualified_name = EncodedString(name)
self.scope_prefix = mangled_name
self.entries = {}
self.const_entries = []
self.type_entries = []
self.sue_entries = []
self.arg_entries = []
self.var_entries = []
self.pyfunc_entries = []
self.cfunc_entries = []
self.c_class_entries = []
self.defined_c_classes = []
self.imported_c_classes = {}
self.cname_to_entry = {}
self.string_to_entry = {}
self.identifier_to_entry = {}
self.num_to_entry = {}
self.obj_to_entry = {}
self.buffer_entries = []
self.lambda_defs = []
self.return_type = None
self.id_counters = {}
def __deepcopy__(self, memo):
return self
def merge_in(self, other, merge_unused=True, whitelist=None):
# Use with care...
entries = []
for name, entry in other.entries.iteritems():
if not whitelist or name in whitelist:
if entry.used or merge_unused:
entries.append((name, entry))
self.entries.update(entries)
for attr in ('const_entries',
'type_entries',
'sue_entries',
'arg_entries',
'var_entries',
'pyfunc_entries',
'cfunc_entries',
'c_class_entries'):
self_entries = getattr(self, attr)
names = set([e.name for e in self_entries])
for entry in getattr(other, attr):
if (entry.used or merge_unused) and entry.name not in names:
self_entries.append(entry)
def __str__(self):
return "<%s %s>" % (self.__class__.__name__, self.qualified_name)
def qualifying_scope(self):
return self.parent_scope
def mangle(self, prefix, name = None):
if name:
return "%s%s%s" % (prefix, self.scope_prefix, name)
else:
return self.parent_scope.mangle(prefix, self.name)
def mangle_internal(self, name):
# Mangle an internal name so as not to clash with any
# user-defined name in this scope.
prefix = "%s%s_" % (Naming.pyrex_prefix, name)
return self.mangle(prefix)
#return self.parent_scope.mangle(prefix, self.name)
def mangle_class_private_name(self, name):
if self.parent_scope:
return self.parent_scope.mangle_class_private_name(name)
return name
def next_id(self, name=None):
# Return a cname fragment that is unique for this module
counters = self.global_scope().id_counters
try:
count = counters[name] + 1
except KeyError:
count = 0
counters[name] = count
if name:
if not count:
# unique names don't need a suffix, reoccurrences will get one
return name
return '%s%d' % (name, count)
else:
return '%d' % count
def global_scope(self):
# Return the module-level scope containing this scope.
return self.outer_scope.global_scope()
def builtin_scope(self):
# Return the module-level scope containing this scope.
return self.outer_scope.builtin_scope()
def declare(self, name, cname, type, pos, visibility, shadow = 0):
# Create new entry, and add to dictionary if
# name is not None. Reports a warning if already
# declared.
if type.is_buffer and not isinstance(self, LocalScope):
error(pos, ERR_BUF_LOCALONLY)
if not self.in_cinclude and cname and re.match("^_[_A-Z]+$", cname):
# See http://www.gnu.org/software/libc/manual/html_node/Reserved-Names.html#Reserved-Names
warning(pos, "'%s' is a reserved name in C." % cname, -1)
entries = self.entries
if name and name in entries and not shadow:
if visibility == 'extern':
warning(pos, "'%s' redeclared " % name, 0)
elif visibility != 'ignore':
error(pos, "'%s' redeclared " % name)
entry = Entry(name, cname, type, pos = pos)
entry.in_cinclude = self.in_cinclude
if name:
entry.qualified_name = self.qualify_name(name)
# if name in entries and self.is_cpp():
# entries[name].overloaded_alternatives.append(entry)
# else:
# entries[name] = entry
if not shadow:
entries[name] = entry
if type.is_memoryviewslice:
import MemoryView
entry.init = MemoryView.memslice_entry_init
entry.scope = self
entry.visibility = visibility
return entry
def qualify_name(self, name):
return EncodedString("%s.%s" % (self.qualified_name, name))
def declare_const(self, name, type, value, pos, cname = None, visibility = 'private', api = 0):
# Add an entry for a named constant.
if not cname:
if self.in_cinclude or (visibility == 'public' or api):
cname = name
else:
cname = self.mangle(Naming.enum_prefix, name)
entry = self.declare(name, cname, type, pos, visibility)
entry.is_const = 1
entry.value_node = value
return entry
def declare_type(self, name, type, pos,
cname = None, visibility = 'private', api = 0, defining = 1, shadow = 0):
# Add an entry for a type definition.
if not cname:
cname = name
entry = self.declare(name, cname, type, pos, visibility, shadow)
entry.is_type = 1
entry.api = api
if defining:
self.type_entries.append(entry)
type.entry = entry
# here we would set as_variable to an object representing this type
return entry
def declare_typedef(self, name, base_type, pos, cname = None,
visibility = 'private', api = 0):
if not cname:
if self.in_cinclude or (visibility == 'public' or api):
cname = name
else:
cname = self.mangle(Naming.type_prefix, name)
try:
type = PyrexTypes.create_typedef_type(name, base_type, cname,
(visibility == 'extern'))
except ValueError, e:
error(pos, e.args[0])
type = PyrexTypes.error_type
entry = self.declare_type(name, type, pos, cname,
visibility = visibility, api = api)
type.qualified_name = entry.qualified_name
return entry
def declare_struct_or_union(self, name, kind, scope,
typedef_flag, pos, cname = None,
visibility = 'private', api = 0,
packed = False):
# Add an entry for a struct or union definition.
if not cname:
if self.in_cinclude or (visibility == 'public' or api):
cname = name
else:
cname = self.mangle(Naming.type_prefix, name)
entry = self.lookup_here(name)
if not entry:
type = PyrexTypes.CStructOrUnionType(
name, kind, scope, typedef_flag, cname, packed)
entry = self.declare_type(name, type, pos, cname,
visibility = visibility, api = api,
defining = scope is not None)
self.sue_entries.append(entry)
type.entry = entry
else:
if not (entry.is_type and entry.type.is_struct_or_union
and entry.type.kind == kind):
warning(pos, "'%s' redeclared " % name, 0)
elif scope and entry.type.scope:
warning(pos, "'%s' already defined (ignoring second definition)" % name, 0)
else:
self.check_previous_typedef_flag(entry, typedef_flag, pos)
self.check_previous_visibility(entry, visibility, pos)
if scope:
entry.type.scope = scope
self.type_entries.append(entry)
return entry
def declare_cpp_class(self, name, scope,
pos, cname = None, base_classes = [],
visibility = 'extern', templates = None):
if visibility != 'extern':
error(pos, "C++ classes may only be extern")
if cname is None:
cname = name
entry = self.lookup_here(name)
if not entry:
type = PyrexTypes.CppClassType(
name, scope, cname, base_classes, templates = templates)
entry = self.declare_type(name, type, pos, cname,
visibility = visibility, defining = scope is not None)
else:
if not (entry.is_type and entry.type.is_cpp_class):
error(pos, "'%s' redeclared " % name)
return None
elif scope and entry.type.scope:
warning(pos, "'%s' already defined (ignoring second definition)" % name, 0)
else:
if scope:
entry.type.scope = scope
self.type_entries.append(entry)
if base_classes:
if entry.type.base_classes and not entry.type.base_classes == base_classes:
error(pos, "Base type does not match previous declaration")
else:
entry.type.base_classes = base_classes
if templates or entry.type.templates:
if templates != entry.type.templates:
error(pos, "Template parameters do not match previous declaration")
if templates is not None and entry.type.scope is not None:
for T in templates:
template_entry = entry.type.scope.declare(T.name, T.name, T, None, 'extern')
template_entry.is_type = 1
def declare_inherited_attributes(entry, base_classes):
for base_class in base_classes:
if base_class.scope is None:
error(pos, "Cannot inherit from incomplete type")
else:
declare_inherited_attributes(entry, base_class.base_classes)
entry.type.scope.declare_inherited_cpp_attributes(base_class.scope)
if entry.type.scope:
declare_inherited_attributes(entry, base_classes)
if self.is_cpp_class_scope:
entry.type.namespace = self.outer_scope.lookup(self.name).type
return entry
def check_previous_typedef_flag(self, entry, typedef_flag, pos):
if typedef_flag != entry.type.typedef_flag:
error(pos, "'%s' previously declared using '%s'" % (
entry.name, ("cdef", "ctypedef")[entry.type.typedef_flag]))
def check_previous_visibility(self, entry, visibility, pos):
if entry.visibility != visibility:
error(pos, "'%s' previously declared as '%s'" % (
entry.name, entry.visibility))
def declare_enum(self, name, pos, cname, typedef_flag,
visibility = 'private', api = 0):
if name:
if not cname:
if self.in_cinclude or (visibility == 'public' or api):
cname = name
else:
cname = self.mangle(Naming.type_prefix, name)
type = PyrexTypes.CEnumType(name, cname, typedef_flag)
else:
type = PyrexTypes.c_anon_enum_type
entry = self.declare_type(name, type, pos, cname = cname,
visibility = visibility, api = api)
entry.enum_values = []
self.sue_entries.append(entry)
return entry
def declare_var(self, name, type, pos,
cname = None, visibility = 'private',
api = 0, in_pxd = 0, is_cdef = 0):
# Add an entry for a variable.
if not cname:
if visibility != 'private' or api:
cname = name
else:
cname = self.mangle(Naming.var_prefix, name)
if type.is_cpp_class and visibility != 'extern':
constructor = type.scope.lookup(u'<init>')
if constructor is not None and PyrexTypes.best_match([], constructor.all_alternatives()) is None:
error(pos, "C++ class must have a default constructor to be stack allocated")
entry = self.declare(name, cname, type, pos, visibility)
entry.is_variable = 1
if in_pxd and visibility != 'extern':
entry.defined_in_pxd = 1
entry.used = 1
if api:
entry.api = 1
entry.used = 1
return entry
def declare_builtin(self, name, pos):
return self.outer_scope.declare_builtin(name, pos)
def _declare_pyfunction(self, name, pos, visibility='extern', entry=None):
if entry and not entry.type.is_cfunction:
error(pos, "'%s' already declared" % name)
error(entry.pos, "Previous declaration is here")
entry = self.declare_var(name, py_object_type, pos, visibility=visibility)
entry.signature = pyfunction_signature
self.pyfunc_entries.append(entry)
return entry
def declare_pyfunction(self, name, pos, allow_redefine=False, visibility='extern'):
# Add an entry for a Python function.
entry = self.lookup_here(name)
if not allow_redefine or Options.disable_function_redefinition:
return self._declare_pyfunction(name, pos, visibility=visibility, entry=entry)
if entry:
if entry.type.is_unspecified:
entry.type = py_object_type
elif entry.type is not py_object_type:
return self._declare_pyfunction(name, pos, visibility=visibility, entry=entry)
else: # declare entry stub
self.declare_var(name, py_object_type, pos, visibility=visibility)
entry = self.declare_var(None, py_object_type, pos,
cname=name, visibility='private')
entry.name = EncodedString(name)
entry.qualified_name = self.qualify_name(name)
entry.signature = pyfunction_signature
entry.is_anonymous = True
return entry
def declare_lambda_function(self, lambda_name, pos):
# Add an entry for an anonymous Python function.
func_cname = self.mangle(Naming.lambda_func_prefix + u'funcdef_', lambda_name)
pymethdef_cname = self.mangle(Naming.lambda_func_prefix + u'methdef_', lambda_name)
qualified_name = self.qualify_name(lambda_name)
entry = self.declare(None, func_cname, py_object_type, pos, 'private')
entry.name = lambda_name
entry.qualified_name = qualified_name
entry.pymethdef_cname = pymethdef_cname
entry.func_cname = func_cname
entry.signature = pyfunction_signature
entry.is_anonymous = True
return entry
def add_lambda_def(self, def_node):
self.lambda_defs.append(def_node)
def register_pyfunction(self, entry):
self.pyfunc_entries.append(entry)
def declare_cfunction(self, name, type, pos,
cname = None, visibility = 'private', api = 0, in_pxd = 0,
defining = 0, modifiers = (), utility_code = None):
# Add an entry for a C function.
if not cname:
if visibility != 'private' or api:
cname = name
else:
cname = self.mangle(Naming.func_prefix, name)
entry = self.lookup_here(name)
if entry:
if visibility != 'private' and visibility != entry.visibility:
warning(pos, "Function '%s' previously declared as '%s'" % (name, entry.visibility), 1)
if not entry.type.same_as(type):
if visibility == 'extern' and entry.visibility == 'extern':
can_override = False
if self.is_cpp():
can_override = True
elif cname:
# if all alternatives have different cnames,
# it's safe to allow signature overrides
for alt_entry in entry.all_alternatives():
if not alt_entry.cname or cname == alt_entry.cname:
break # cname not unique!
else:
can_override = True
if can_override:
temp = self.add_cfunction(name, type, pos, cname, visibility, modifiers)
temp.overloaded_alternatives = entry.all_alternatives()
entry = temp
else:
warning(pos, "Function signature does not match previous declaration", 1)
entry.type = type
else:
error(pos, "Function signature does not match previous declaration")
else:
entry = self.add_cfunction(name, type, pos, cname, visibility, modifiers)
entry.func_cname = cname
if in_pxd and visibility != 'extern':
entry.defined_in_pxd = 1
if api:
entry.api = 1
if not defining and not in_pxd and visibility != 'extern':
error(pos, "Non-extern C function '%s' declared but not defined" % name)
if defining:
entry.is_implemented = True
if modifiers:
entry.func_modifiers = modifiers
entry.utility_code = utility_code
type.entry = entry
return entry
def add_cfunction(self, name, type, pos, cname, visibility, modifiers):
# Add a C function entry without giving it a func_cname.
entry = self.declare(name, cname, type, pos, visibility)
entry.is_cfunction = 1
if modifiers:
entry.func_modifiers = modifiers
self.cfunc_entries.append(entry)
return entry
def find(self, name, pos):
# Look up name, report error if not found.
entry = self.lookup(name)
if entry:
return entry
else:
error(pos, "'%s' is not declared" % name)
def find_imported_module(self, path, pos):
# Look up qualified name, must be a module, report error if not found.
# Path is a list of names.
scope = self
for name in path:
entry = scope.find(name, pos)
if not entry:
return None
if entry.as_module:
scope = entry.as_module
else:
error(pos, "'%s' is not a cimported module" % '.'.join(path))
return None
return scope
def lookup(self, name):
# Look up name in this scope or an enclosing one.
# Return None if not found.
return (self.lookup_here(name)
or (self.outer_scope and self.outer_scope.lookup(name))
or None)
def lookup_here(self, name):
# Look up in this scope only, return None if not found.
return self.entries.get(name, None)
def lookup_target(self, name):
# Look up name in this scope only. Declare as Python
# variable if not found.
entry = self.lookup_here(name)
if not entry:
entry = self.declare_var(name, py_object_type, None)
return entry
def lookup_type(self, name):
entry = self.lookup(name)
if entry and entry.is_type:
if entry.type.is_fused and self.fused_to_specific:
return entry.type.specialize(self.fused_to_specific)
return entry.type
def lookup_operator(self, operator, operands):
if operands[0].type.is_cpp_class:
obj_type = operands[0].type
method = obj_type.scope.lookup("operator%s" % operator)
if method is not None:
res = PyrexTypes.best_match(operands[1:], method.all_alternatives())
if res is not None:
return res
function = self.lookup("operator%s" % operator)
if function is None:
return None
return PyrexTypes.best_match(operands, function.all_alternatives())
def use_utility_code(self, new_code):
self.global_scope().use_utility_code(new_code)
def generate_library_function_declarations(self, code):
# Generate extern decls for C library funcs used.
pass
def defines_any(self, names):
# Test whether any of the given names are
# defined in this scope.
for name in names:
if name in self.entries:
return 1
return 0
def infer_types(self):
from TypeInference import get_type_inferer
get_type_inferer().infer_types(self)
def is_cpp(self):
outer = self.outer_scope
if outer is None:
return False
else:
return outer.is_cpp()
def add_include_file(self, filename):
self.outer_scope.add_include_file(filename)
def get_refcounted_entries(self, include_weakref=False):
py_attrs = []
py_buffers = []
memoryview_slices = []
for entry in self.var_entries:
if entry.type.is_pyobject:
if include_weakref or entry.name != "weakref":
py_attrs.append(entry)
elif entry.type == PyrexTypes.c_py_buffer_type:
py_buffers.append(entry)
elif entry.type.is_memoryviewslice:
memoryview_slices.append(entry)
have_entries = py_attrs or py_buffers or memoryview_slices
return have_entries, (py_attrs, py_buffers, memoryview_slices)
class PreImportScope(Scope):
namespace_cname = Naming.preimport_cname
def __init__(self):
Scope.__init__(self, Options.pre_import, None, None)
def declare_builtin(self, name, pos):
entry = self.declare(name, name, py_object_type, pos, 'private')
entry.is_variable = True
entry.is_pyglobal = True
return entry
class BuiltinScope(Scope):
# The builtin namespace.
is_builtin_scope = True
def __init__(self):
if Options.pre_import is None:
Scope.__init__(self, "__builtin__", None, None)
else:
Scope.__init__(self, "__builtin__", PreImportScope(), None)
self.type_names = {}
for name, definition in self.builtin_entries.iteritems():
cname, type = definition
self.declare_var(name, type, None, cname)
def lookup(self, name, language_level=None):
# 'language_level' is passed by ModuleScope
if language_level == 3:
if name == 'str':
name = 'unicode'
return Scope.lookup(self, name)
def declare_builtin(self, name, pos):
if not hasattr(builtins, name):
if self.outer_scope is not None:
return self.outer_scope.declare_builtin(name, pos)
else:
if Options.error_on_unknown_names:
error(pos, "undeclared name not builtin: %s" % name)
else:
warning(pos, "undeclared name not builtin: %s" % name, 2)
def declare_builtin_cfunction(self, name, type, cname, python_equiv = None,
utility_code = None):
# If python_equiv == "*", the Python equivalent has the same name
# as the entry, otherwise it has the name specified by python_equiv.
name = EncodedString(name)
entry = self.declare_cfunction(name, type, None, cname, visibility='extern',
utility_code = utility_code)
if python_equiv:
if python_equiv == "*":
python_equiv = name
else:
python_equiv = EncodedString(python_equiv)
var_entry = Entry(python_equiv, python_equiv, py_object_type)
var_entry.is_variable = 1
var_entry.is_builtin = 1
var_entry.utility_code = utility_code
entry.as_variable = var_entry
return entry
def declare_builtin_type(self, name, cname, utility_code = None, objstruct_cname = None):
name = EncodedString(name)
type = PyrexTypes.BuiltinObjectType(name, cname, objstruct_cname)
scope = CClassScope(name, outer_scope=None, visibility='extern')
scope.directives = {}
if name == 'bool':
type.is_final_type = True
type.set_scope(scope)
self.type_names[name] = 1
entry = self.declare_type(name, type, None, visibility='extern')
entry.utility_code = utility_code
var_entry = Entry(name = entry.name,
type = self.lookup('type').type, # make sure "type" is the first type declared...
pos = entry.pos,
cname = "((PyObject*)%s)" % entry.type.typeptr_cname)
var_entry.is_variable = 1
var_entry.is_cglobal = 1
var_entry.is_readonly = 1
var_entry.is_builtin = 1
var_entry.utility_code = utility_code
if Options.cache_builtins:
var_entry.is_const = True
entry.as_variable = var_entry
return type
def builtin_scope(self):
return self
builtin_entries = {
"type": ["((PyObject*)&PyType_Type)", py_object_type],
"bool": ["((PyObject*)&PyBool_Type)", py_object_type],
"int": ["((PyObject*)&PyInt_Type)", py_object_type],
"long": ["((PyObject*)&PyLong_Type)", py_object_type],
"float": ["((PyObject*)&PyFloat_Type)", py_object_type],
"complex":["((PyObject*)&PyComplex_Type)", py_object_type],
"bytes": ["((PyObject*)&PyBytes_Type)", py_object_type],
"str": ["((PyObject*)&PyString_Type)", py_object_type],
"unicode":["((PyObject*)&PyUnicode_Type)", py_object_type],
"tuple": ["((PyObject*)&PyTuple_Type)", py_object_type],
"list": ["((PyObject*)&PyList_Type)", py_object_type],
"dict": ["((PyObject*)&PyDict_Type)", py_object_type],
"set": ["((PyObject*)&PySet_Type)", py_object_type],
"frozenset": ["((PyObject*)&PyFrozenSet_Type)", py_object_type],
"slice": ["((PyObject*)&PySlice_Type)", py_object_type],
# "file": ["((PyObject*)&PyFile_Type)", py_object_type], # not in Py3
"None": ["Py_None", py_object_type],
"False": ["Py_False", py_object_type],
"True": ["Py_True", py_object_type],
}
const_counter = 1 # As a temporary solution for compiling code in pxds
class ModuleScope(Scope):
# module_name string Python name of the module
# module_cname string C name of Python module object
# #module_dict_cname string C name of module dict object
# method_table_cname string C name of method table
# doc string Module doc string
# doc_cname string C name of module doc string
# utility_code_list [UtilityCode] Queuing utility codes for forwarding to Code.py
# python_include_files [string] Standard Python headers to be included
# include_files [string] Other C headers to be included
# string_to_entry {string : Entry} Map string const to entry
# identifier_to_entry {string : Entry} Map identifier string const to entry
# context Context
# parent_module Scope Parent in the import namespace
# module_entries {string : Entry} For cimport statements
# type_names {string : 1} Set of type names (used during parsing)
# included_files [string] Cython sources included with 'include'
# pxd_file_loaded boolean Corresponding .pxd file has been processed
# cimported_modules [ModuleScope] Modules imported with cimport
# types_imported {PyrexType : 1} Set of types for which import code generated
# has_import_star boolean Module contains import *
# cpp boolean Compiling a C++ file
# is_cython_builtin boolean Is this the Cython builtin scope (or a child scope)
is_module_scope = 1
has_import_star = 0
is_cython_builtin = 0
def __init__(self, name, parent_module, context):
import Builtin
self.parent_module = parent_module
outer_scope = Builtin.builtin_scope
Scope.__init__(self, name, outer_scope, parent_module)
if name != "__init__":
self.module_name = name
else:
# Treat Spam/__init__.pyx specially, so that when Python loads
# Spam/__init__.so, initSpam() is defined.
self.module_name = parent_module.module_name
self.module_name = EncodedString(self.module_name)
self.context = context
self.module_cname = Naming.module_cname
self.module_dict_cname = Naming.moddict_cname
self.method_table_cname = Naming.methtable_cname
self.doc = ""
self.doc_cname = Naming.moddoc_cname
self.utility_code_list = []
self.module_entries = {}
self.python_include_files = ["Python.h"]
self.include_files = []
self.type_names = dict(outer_scope.type_names)
self.pxd_file_loaded = 0
self.cimported_modules = []
self.types_imported = {}
self.included_files = []
self.has_extern_class = 0
self.cached_builtins = []
self.undeclared_cached_builtins = []
self.namespace_cname = self.module_cname
for name in ['__builtins__', '__name__', '__file__', '__doc__']:
self.declare_var(EncodedString(name), py_object_type, None)
def qualifying_scope(self):
return self.parent_module
def global_scope(self):
return self
def lookup(self, name):
entry = self.lookup_here(name)
if entry is not None:
return entry