2553 lines
109 KiB
Python
2553 lines
109 KiB
Python
#
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# Symbol Table
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#
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from __future__ import absolute_import
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import re
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import copy
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import operator
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try:
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import __builtin__ as builtins
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except ImportError: # Py3
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import builtins
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from .Errors import warning, error, InternalError
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from .StringEncoding import EncodedString
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from . import Options, Naming
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from . import PyrexTypes
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from .PyrexTypes import py_object_type, unspecified_type
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from .TypeSlots import (
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pyfunction_signature, pymethod_signature, richcmp_special_methods,
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get_special_method_signature, get_property_accessor_signature)
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from . import Future
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from . import Code
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iso_c99_keywords = set(
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['auto', 'break', 'case', 'char', 'const', 'continue', 'default', 'do',
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'double', 'else', 'enum', 'extern', 'float', 'for', 'goto', 'if',
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'int', 'long', 'register', 'return', 'short', 'signed', 'sizeof',
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'static', 'struct', 'switch', 'typedef', 'union', 'unsigned', 'void',
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'volatile', 'while',
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'_Bool', '_Complex'', _Imaginary', 'inline', 'restrict'])
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def c_safe_identifier(cname):
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# There are some C limitations on struct entry names.
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if ((cname[:2] == '__' and not (cname.startswith(Naming.pyrex_prefix)
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or cname in ('__weakref__', '__dict__')))
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or cname in iso_c99_keywords):
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cname = Naming.pyrex_prefix + cname
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return cname
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class BufferAux(object):
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writable_needed = False
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def __init__(self, buflocal_nd_var, rcbuf_var):
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self.buflocal_nd_var = buflocal_nd_var
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self.rcbuf_var = rcbuf_var
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def __repr__(self):
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return "<BufferAux %r>" % self.__dict__
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class Entry(object):
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# A symbol table entry in a Scope or ModuleNamespace.
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#
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# name string Python name of entity
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# cname string C name of entity
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# type PyrexType Type of entity
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# doc string Doc string
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# annotation ExprNode PEP 484/526 annotation
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# init string Initial value
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# visibility 'private' or 'public' or 'extern'
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# is_builtin boolean Is an entry in the Python builtins dict
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# is_cglobal boolean Is a C global variable
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# is_pyglobal boolean Is a Python module-level variable
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# or class attribute during
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# class construction
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# is_member boolean Is an assigned class member
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# is_pyclass_attr boolean Is a name in a Python class namespace
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# is_variable boolean Is a variable
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# is_cfunction boolean Is a C function
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# is_cmethod boolean Is a C method of an extension type
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# is_builtin_cmethod boolean Is a C method of a builtin type (implies is_cmethod)
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# is_unbound_cmethod boolean Is an unbound C method of an extension type
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# is_final_cmethod boolean Is non-overridable C method
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# is_inline_cmethod boolean Is inlined C method
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# is_anonymous boolean Is a anonymous pyfunction entry
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# is_type boolean Is a type definition
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# is_cclass boolean Is an extension class
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# is_cpp_class boolean Is a C++ class
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# is_const boolean Is a constant
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# is_property boolean Is a property of an extension type:
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# doc_cname string or None C const holding the docstring
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# getter_cname string C func for getting property
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# setter_cname string C func for setting or deleting property
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# is_self_arg boolean Is the "self" arg of an exttype method
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# is_arg boolean Is the arg of a method
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# is_local boolean Is a local variable
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# in_closure boolean Is referenced in an inner scope
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# in_subscope boolean Belongs to a generator expression scope
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# is_readonly boolean Can't be assigned to
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# func_cname string C func implementing Python func
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# func_modifiers [string] C function modifiers ('inline')
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# pos position Source position where declared
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# namespace_cname string If is_pyglobal, the C variable
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# holding its home namespace
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# pymethdef_cname string PyMethodDef structure
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# signature Signature Arg & return types for Python func
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# as_variable Entry Alternative interpretation of extension
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# type name or builtin C function as a variable
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# xdecref_cleanup boolean Use Py_XDECREF for error cleanup
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# in_cinclude boolean Suppress C declaration code
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# enum_values [Entry] For enum types, list of values
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# qualified_name string "modname.funcname" or "modname.classname"
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# or "modname.classname.funcname"
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# is_declared_generic boolean Is declared as PyObject * even though its
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# type is an extension type
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# as_module None Module scope, if a cimported module
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# is_inherited boolean Is an inherited attribute of an extension type
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# pystring_cname string C name of Python version of string literal
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# is_interned boolean For string const entries, value is interned
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# is_identifier boolean For string const entries, value is an identifier
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# used boolean
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# is_special boolean Is a special method or property accessor
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# of an extension type
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# defined_in_pxd boolean Is defined in a .pxd file (not just declared)
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# api boolean Generate C API for C class or function
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# utility_code string Utility code needed when this entry is used
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#
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# buffer_aux BufferAux or None Extra information needed for buffer variables
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# inline_func_in_pxd boolean Hacky special case for inline function in pxd file.
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# Ideally this should not be necessary.
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# might_overflow boolean In an arithmetic expression that could cause
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# overflow (used for type inference).
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# utility_code_definition For some Cython builtins, the utility code
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# which contains the definition of the entry.
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# Currently only supported for CythonScope entries.
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# error_on_uninitialized Have Control Flow issue an error when this entry is
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# used uninitialized
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# cf_used boolean Entry is used
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# is_fused_specialized boolean Whether this entry of a cdef or def function
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# is a specialization
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# TODO: utility_code and utility_code_definition serves the same purpose...
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inline_func_in_pxd = False
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borrowed = 0
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init = ""
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annotation = None
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visibility = 'private'
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is_builtin = 0
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is_cglobal = 0
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is_pyglobal = 0
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is_member = 0
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is_pyclass_attr = 0
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is_variable = 0
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is_cfunction = 0
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is_cmethod = 0
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is_builtin_cmethod = False
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is_unbound_cmethod = 0
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is_final_cmethod = 0
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is_inline_cmethod = 0
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is_anonymous = 0
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is_type = 0
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is_cclass = 0
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is_cpp_class = 0
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is_const = 0
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is_property = 0
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doc_cname = None
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getter_cname = None
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setter_cname = None
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is_self_arg = 0
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is_arg = 0
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is_local = 0
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in_closure = 0
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from_closure = 0
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in_subscope = 0
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is_declared_generic = 0
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is_readonly = 0
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pyfunc_cname = None
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func_cname = None
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func_modifiers = []
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final_func_cname = None
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doc = None
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as_variable = None
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xdecref_cleanup = 0
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in_cinclude = 0
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as_module = None
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is_inherited = 0
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pystring_cname = None
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is_identifier = 0
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is_interned = 0
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used = 0
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is_special = 0
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defined_in_pxd = 0
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is_implemented = 0
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api = 0
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utility_code = None
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is_overridable = 0
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buffer_aux = None
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prev_entry = None
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might_overflow = 0
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fused_cfunction = None
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is_fused_specialized = False
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utility_code_definition = None
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needs_property = False
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in_with_gil_block = 0
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from_cython_utility_code = None
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error_on_uninitialized = False
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cf_used = True
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outer_entry = None
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def __init__(self, name, cname, type, pos = None, init = None):
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self.name = name
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self.cname = cname
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self.type = type
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self.pos = pos
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self.init = init
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self.overloaded_alternatives = []
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self.cf_assignments = []
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self.cf_references = []
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self.inner_entries = []
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self.defining_entry = self
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def __repr__(self):
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return "%s(<%x>, name=%s, type=%s)" % (type(self).__name__, id(self), self.name, self.type)
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def already_declared_here(self):
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error(self.pos, "Previous declaration is here")
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def redeclared(self, pos):
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error(pos, "'%s' does not match previous declaration" % self.name)
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self.already_declared_here()
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def all_alternatives(self):
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return [self] + self.overloaded_alternatives
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def all_entries(self):
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return [self] + self.inner_entries
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def __lt__(left, right):
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if isinstance(left, Entry) and isinstance(right, Entry):
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return (left.name, left.cname) < (right.name, right.cname)
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else:
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return NotImplemented
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class InnerEntry(Entry):
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"""
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An entry in a closure scope that represents the real outer Entry.
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"""
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from_closure = True
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def __init__(self, outer_entry, scope):
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Entry.__init__(self, outer_entry.name,
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outer_entry.cname,
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outer_entry.type,
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outer_entry.pos)
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self.outer_entry = outer_entry
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self.scope = scope
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# share state with (outermost) defining entry
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outermost_entry = outer_entry
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while outermost_entry.outer_entry:
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outermost_entry = outermost_entry.outer_entry
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self.defining_entry = outermost_entry
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self.inner_entries = outermost_entry.inner_entries
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self.cf_assignments = outermost_entry.cf_assignments
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self.cf_references = outermost_entry.cf_references
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self.overloaded_alternatives = outermost_entry.overloaded_alternatives
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self.inner_entries.append(self)
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def __getattr__(self, name):
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if name.startswith('__'):
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# we wouldn't have been called if it was there
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raise AttributeError(name)
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return getattr(self.defining_entry, name)
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def all_entries(self):
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return self.defining_entry.all_entries()
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class Scope(object):
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# name string Unqualified name
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# outer_scope Scope or None Enclosing scope
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# entries {string : Entry} Python name to entry, non-types
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# const_entries [Entry] Constant entries
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# type_entries [Entry] Struct/union/enum/typedef/exttype entries
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# sue_entries [Entry] Struct/union/enum entries
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# arg_entries [Entry] Function argument entries
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# var_entries [Entry] User-defined variable entries
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# pyfunc_entries [Entry] Python function entries
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# cfunc_entries [Entry] C function entries
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# c_class_entries [Entry] All extension type entries
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# cname_to_entry {string : Entry} Temp cname to entry mapping
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# return_type PyrexType or None Return type of function owning scope
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# is_builtin_scope boolean Is the builtin scope of Python/Cython
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# is_py_class_scope boolean Is a Python class scope
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# is_c_class_scope boolean Is an extension type scope
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# is_closure_scope boolean Is a closure scope
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# is_passthrough boolean Outer scope is passed directly
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# is_cpp_class_scope boolean Is a C++ class scope
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# is_property_scope boolean Is a extension type property scope
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# scope_prefix string Disambiguator for C names
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# in_cinclude boolean Suppress C declaration code
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# qualified_name string "modname" or "modname.classname"
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# Python strings in this scope
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# nogil boolean In a nogil section
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# directives dict Helper variable for the recursive
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# analysis, contains directive values.
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# is_internal boolean Is only used internally (simpler setup)
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is_builtin_scope = 0
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is_py_class_scope = 0
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is_c_class_scope = 0
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is_closure_scope = 0
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is_genexpr_scope = 0
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is_passthrough = 0
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is_cpp_class_scope = 0
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is_property_scope = 0
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is_module_scope = 0
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is_internal = 0
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scope_prefix = ""
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in_cinclude = 0
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nogil = 0
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fused_to_specific = None
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return_type = None
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def __init__(self, name, outer_scope, parent_scope):
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# The outer_scope is the next scope in the lookup chain.
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# The parent_scope is used to derive the qualified name of this scope.
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self.name = name
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self.outer_scope = outer_scope
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self.parent_scope = parent_scope
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mangled_name = "%d%s_" % (len(name), name.replace('.', '_dot_'))
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qual_scope = self.qualifying_scope()
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if qual_scope:
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self.qualified_name = qual_scope.qualify_name(name)
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self.scope_prefix = qual_scope.scope_prefix + mangled_name
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else:
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self.qualified_name = EncodedString(name)
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self.scope_prefix = mangled_name
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self.entries = {}
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self.subscopes = set()
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self.const_entries = []
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self.type_entries = []
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self.sue_entries = []
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self.arg_entries = []
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self.var_entries = []
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self.pyfunc_entries = []
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self.cfunc_entries = []
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self.c_class_entries = []
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self.defined_c_classes = []
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self.imported_c_classes = {}
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self.cname_to_entry = {}
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self.string_to_entry = {}
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self.identifier_to_entry = {}
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self.num_to_entry = {}
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self.obj_to_entry = {}
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self.buffer_entries = []
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self.lambda_defs = []
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self.id_counters = {}
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def __deepcopy__(self, memo):
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return self
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def merge_in(self, other, merge_unused=True, whitelist=None):
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# Use with care...
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entries = []
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for name, entry in other.entries.items():
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if not whitelist or name in whitelist:
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if entry.used or merge_unused:
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entries.append((name, entry))
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self.entries.update(entries)
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for attr in ('const_entries',
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'type_entries',
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'sue_entries',
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'arg_entries',
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'var_entries',
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'pyfunc_entries',
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'cfunc_entries',
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'c_class_entries'):
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self_entries = getattr(self, attr)
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names = set(e.name for e in self_entries)
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for entry in getattr(other, attr):
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if (entry.used or merge_unused) and entry.name not in names:
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self_entries.append(entry)
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def __str__(self):
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return "<%s %s>" % (self.__class__.__name__, self.qualified_name)
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def qualifying_scope(self):
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return self.parent_scope
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def mangle(self, prefix, name = None):
|
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if name:
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return "%s%s%s" % (prefix, self.scope_prefix, name)
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else:
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return self.parent_scope.mangle(prefix, self.name)
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def mangle_internal(self, name):
|
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# Mangle an internal name so as not to clash with any
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# user-defined name in this scope.
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prefix = "%s%s_" % (Naming.pyrex_prefix, name)
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return self.mangle(prefix)
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#return self.parent_scope.mangle(prefix, self.name)
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def mangle_class_private_name(self, name):
|
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if self.parent_scope:
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return self.parent_scope.mangle_class_private_name(name)
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return name
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def next_id(self, name=None):
|
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# Return a cname fragment that is unique for this module
|
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counters = self.global_scope().id_counters
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try:
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count = counters[name] + 1
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except KeyError:
|
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count = 0
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counters[name] = count
|
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if name:
|
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if not count:
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|
# unique names don't need a suffix, reoccurrences will get one
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return name
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return '%s%d' % (name, count)
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else:
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return '%d' % count
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|
|
def global_scope(self):
|
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""" Return the module-level scope containing this scope. """
|
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return self.outer_scope.global_scope()
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|
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def builtin_scope(self):
|
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""" Return the module-level scope containing this scope. """
|
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return self.outer_scope.builtin_scope()
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|
|
|
def iter_local_scopes(self):
|
|
yield self
|
|
if self.subscopes:
|
|
for scope in sorted(self.subscopes, key=operator.attrgetter('scope_prefix')):
|
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yield scope
|
|
|
|
def declare(self, name, cname, type, pos, visibility, shadow = 0, is_type = 0, create_wrapper = 0):
|
|
# Create new entry, and add to dictionary if
|
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# name is not None. Reports a warning if already
|
|
# declared.
|
|
if type.is_buffer and not isinstance(self, LocalScope): # and not is_type:
|
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error(pos, 'Buffer types only allowed as function local variables')
|
|
if not self.in_cinclude and cname and re.match("^_[_A-Z]+$", cname):
|
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# See http://www.gnu.org/software/libc/manual/html_node/Reserved-Names.html#Reserved-Names
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|
warning(pos, "'%s' is a reserved name in C." % cname, -1)
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entries = self.entries
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|
if name and name in entries and not shadow:
|
|
old_entry = entries[name]
|
|
|
|
# Reject redeclared C++ functions only if they have the same type signature.
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|
cpp_override_allowed = False
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|
if type.is_cfunction and old_entry.type.is_cfunction and self.is_cpp():
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|
for alt_entry in old_entry.all_alternatives():
|
|
if type == alt_entry.type:
|
|
if name == '<init>' and not type.args:
|
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# Cython pre-declares the no-args constructor - allow later user definitions.
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cpp_override_allowed = True
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break
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else:
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cpp_override_allowed = True
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|
|
|
if cpp_override_allowed:
|
|
# C++ function/method overrides with different signatures are ok.
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pass
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|
elif self.is_cpp_class_scope and entries[name].is_inherited:
|
|
# Likewise ignore inherited classes.
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pass
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elif visibility == 'extern':
|
|
# Silenced outside of "cdef extern" blocks, until we have a safe way to
|
|
# prevent pxd-defined cpdef functions from ending up here.
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|
warning(pos, "'%s' redeclared " % name, 1 if self.in_cinclude else 0)
|
|
elif visibility != 'ignore':
|
|
error(pos, "'%s' redeclared " % name)
|
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entries[name].already_declared_here()
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|
entry = Entry(name, cname, type, pos = pos)
|
|
entry.in_cinclude = self.in_cinclude
|
|
entry.create_wrapper = create_wrapper
|
|
if name:
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entry.qualified_name = self.qualify_name(name)
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|
# if name in entries and self.is_cpp():
|
|
# entries[name].overloaded_alternatives.append(entry)
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|
# else:
|
|
# entries[name] = entry
|
|
if not shadow:
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|
entries[name] = entry
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|
|
|
if type.is_memoryviewslice:
|
|
from . import MemoryView
|
|
entry.init = MemoryView.memslice_entry_init
|
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|
|
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, create_wrapper = 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, create_wrapper = create_wrapper)
|
|
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, template = 0):
|
|
# Add an entry for a type definition.
|
|
if not cname:
|
|
cname = name
|
|
entry = self.declare(name, cname, type, pos, visibility, shadow,
|
|
is_type=True)
|
|
entry.is_type = 1
|
|
entry.api = api
|
|
if defining:
|
|
self.type_entries.append(entry)
|
|
|
|
if not template:
|
|
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 != 'private' or api):
|
|
cname = name
|
|
else:
|
|
cname = self.mangle(Naming.type_prefix, name)
|
|
try:
|
|
if self.is_cpp_class_scope:
|
|
namespace = self.outer_scope.lookup(self.name).type
|
|
else:
|
|
namespace = None
|
|
type = PyrexTypes.create_typedef_type(name, base_type, cname,
|
|
(visibility == 'extern'),
|
|
namespace)
|
|
except ValueError as 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)
|
|
if self.is_cpp_class_scope:
|
|
entry.type.namespace = self.outer_scope.lookup(self.name).type
|
|
return entry
|
|
|
|
def declare_cpp_class(self, name, scope,
|
|
pos, cname = None, base_classes = (),
|
|
visibility = 'extern', templates = None):
|
|
if cname is None:
|
|
if self.in_cinclude or (visibility != 'private'):
|
|
cname = name
|
|
else:
|
|
cname = self.mangle(Naming.type_prefix, name)
|
|
base_classes = list(base_classes)
|
|
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)
|
|
self.sue_entries.append(entry)
|
|
else:
|
|
if not (entry.is_type and entry.type.is_cpp_class):
|
|
error(pos, "'%s' redeclared " % name)
|
|
entry.already_declared_here()
|
|
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 entry.type.base_classes != base_classes:
|
|
error(pos, "Base type does not match previous declaration")
|
|
entry.already_declared_here()
|
|
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")
|
|
entry.already_declared_here()
|
|
|
|
def declare_inherited_attributes(entry, base_classes):
|
|
for base_class in base_classes:
|
|
if base_class is PyrexTypes.error_type:
|
|
continue
|
|
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)
|
|
if scope:
|
|
declare_inherited_attributes(entry, base_classes)
|
|
scope.declare_var(name="this", cname="this", type=PyrexTypes.CPtrType(entry.type), pos=entry.pos)
|
|
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, create_wrapper = 0):
|
|
if name:
|
|
if not cname:
|
|
if (self.in_cinclude or visibility == 'public'
|
|
or visibility == 'extern' or api):
|
|
cname = name
|
|
else:
|
|
cname = self.mangle(Naming.type_prefix, name)
|
|
if self.is_cpp_class_scope:
|
|
namespace = self.outer_scope.lookup(self.name).type
|
|
else:
|
|
namespace = None
|
|
type = PyrexTypes.CEnumType(name, cname, typedef_flag, namespace)
|
|
else:
|
|
type = PyrexTypes.c_anon_enum_type
|
|
entry = self.declare_type(name, type, pos, cname = cname,
|
|
visibility = visibility, api = api)
|
|
entry.create_wrapper = create_wrapper
|
|
entry.enum_values = []
|
|
self.sue_entries.append(entry)
|
|
return entry
|
|
|
|
def declare_tuple_type(self, pos, components):
|
|
return self.outer_scope.declare_tuple_type(pos, components)
|
|
|
|
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':
|
|
type.check_nullary_constructor(pos)
|
|
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:
|
|
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, overridable=False):
|
|
# 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 not in_pxd and visibility != entry.visibility and visibility == 'extern':
|
|
# Previously declared, but now extern => treat this
|
|
# as implementing the function, using the new cname
|
|
defining = True
|
|
visibility = entry.visibility
|
|
entry.cname = cname
|
|
entry.func_cname = cname
|
|
if visibility != 'private' and visibility != entry.visibility:
|
|
warning(pos, "Function '%s' previously declared as '%s', now as '%s'" % (name, entry.visibility, visibility), 1)
|
|
if overridable != entry.is_overridable:
|
|
warning(pos, "Function '%s' previously declared as '%s'" % (
|
|
name, 'cpdef' if overridable else 'cdef'), 1)
|
|
if entry.type.same_as(type):
|
|
# Fix with_gil vs nogil.
|
|
entry.type = entry.type.with_with_gil(type.with_gil)
|
|
else:
|
|
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
|
|
elif not in_pxd and entry.defined_in_pxd and type.compatible_signature_with(entry.type):
|
|
# TODO: check that this was done by a signature optimisation and not a user error.
|
|
#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
|
|
entry.is_overridable = overridable
|
|
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
|
|
if utility_code:
|
|
assert not entry.utility_code, "duplicate utility code definition in entry %s (%s)" % (name, cname)
|
|
entry.utility_code = utility_code
|
|
if overridable:
|
|
# names of cpdef functions can be used as variables and can be assigned to
|
|
var_entry = Entry(name, cname, py_object_type) # FIXME: cname?
|
|
var_entry.qualified_name = self.qualify_name(name)
|
|
var_entry.is_variable = 1
|
|
var_entry.is_pyglobal = 1
|
|
var_entry.scope = entry.scope
|
|
entry.as_variable = var_entry
|
|
type.entry = entry
|
|
return entry
|
|
|
|
def add_cfunction(self, name, type, pos, cname, visibility, modifiers, inherited=False):
|
|
# 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
|
|
if inherited or type.is_fused:
|
|
self.cfunc_entries.append(entry)
|
|
else:
|
|
# For backwards compatibility reasons, we must keep all non-fused methods
|
|
# before all fused methods, but separately for each type.
|
|
i = len(self.cfunc_entries)
|
|
for cfunc_entry in reversed(self.cfunc_entries):
|
|
if cfunc_entry.is_inherited or not cfunc_entry.type.is_fused:
|
|
break
|
|
i -= 1
|
|
self.cfunc_entries.insert(i, 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:
|
|
arg_types = [arg.type for arg in operands[1:]]
|
|
res = PyrexTypes.best_match([arg.type for arg in operands[1:]],
|
|
method.all_alternatives())
|
|
if res is not None:
|
|
return res
|
|
function = self.lookup("operator%s" % operator)
|
|
function_alternatives = []
|
|
if function is not None:
|
|
function_alternatives = function.all_alternatives()
|
|
|
|
# look-up nonmember methods listed within a class
|
|
method_alternatives = []
|
|
if len(operands)==2: # binary operators only
|
|
for n in range(2):
|
|
if operands[n].type.is_cpp_class:
|
|
obj_type = operands[n].type
|
|
method = obj_type.scope.lookup("operator%s" % operator)
|
|
if method is not None:
|
|
method_alternatives += method.all_alternatives()
|
|
|
|
if (not method_alternatives) and (not function_alternatives):
|
|
return None
|
|
|
|
# select the unique alternatives
|
|
all_alternatives = list(set(method_alternatives + function_alternatives))
|
|
|
|
return PyrexTypes.best_match([arg.type for arg in operands],
|
|
all_alternatives)
|
|
|
|
def lookup_operator_for_types(self, pos, operator, types):
|
|
from .Nodes import Node
|
|
class FakeOperand(Node):
|
|
pass
|
|
operands = [FakeOperand(pos, type=type) for type in types]
|
|
return self.lookup_operator(operator, operands)
|
|
|
|
def use_utility_code(self, new_code):
|
|
self.global_scope().use_utility_code(new_code)
|
|
|
|
def use_entry_utility_code(self, entry):
|
|
self.global_scope().use_entry_utility_code(entry)
|
|
|
|
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 defines_any_special(self, names):
|
|
# Test whether any of the given names are defined as special methods in this scope.
|
|
for name in names:
|
|
if name in self.entries and self.entries[name].is_special:
|
|
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, verbatim_include=None, late=False):
|
|
self.outer_scope.add_include_file(filename, verbatim_include, late)
|
|
|
|
|
|
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 sorted(self.builtin_entries.items()):
|
|
cname, type = definition
|
|
self.declare_var(name, type, None, cname)
|
|
|
|
def lookup(self, name, language_level=None, str_is_str=None):
|
|
# 'language_level' and 'str_is_str' are passed by ModuleScope
|
|
if name == 'str':
|
|
if str_is_str is None:
|
|
str_is_str = language_level in (None, 2)
|
|
if not str_is_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.qualified_name = self.qualify_name(name)
|
|
var_entry.is_variable = 1
|
|
var_entry.is_builtin = 1
|
|
var_entry.utility_code = utility_code
|
|
var_entry.scope = entry.scope
|
|
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 = entry.type.typeptr_cname)
|
|
var_entry.qualified_name = self.qualify_name(name)
|
|
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
|
|
var_entry.scope = self
|
|
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],
|
|
"bytearray": ["((PyObject*)&PyByteArray_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
|
|
# c_includes {key: IncludeCode} C headers or verbatim code to be generated
|
|
# See process_include() for more documentation
|
|
# 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} 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_package boolean Is this a package module? (__init__)
|
|
|
|
is_module_scope = 1
|
|
has_import_star = 0
|
|
is_cython_builtin = 0
|
|
old_style_globals = 0
|
|
|
|
def __init__(self, name, parent_module, context):
|
|
from . import Builtin
|
|
self.parent_module = parent_module
|
|
outer_scope = Builtin.builtin_scope
|
|
Scope.__init__(self, name, outer_scope, parent_module)
|
|
if name == "__init__":
|
|
# Treat Spam/__init__.pyx specially, so that when Python loads
|
|
# Spam/__init__.so, initSpam() is defined.
|
|
self.module_name = parent_module.module_name
|
|
self.is_package = True
|
|
else:
|
|
self.module_name = name
|
|
self.is_package = False
|
|
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.c_includes = {}
|
|
self.type_names = dict(outer_scope.type_names)
|
|
self.pxd_file_loaded = 0
|
|
self.cimported_modules = []
|
|
self.types_imported = set()
|
|
self.included_files = []
|
|
self.has_extern_class = 0
|
|
self.cached_builtins = []
|
|
self.undeclared_cached_builtins = []
|
|
self.namespace_cname = self.module_cname
|
|
self._cached_tuple_types = {}
|
|
for var_name in ['__builtins__', '__name__', '__file__', '__doc__', '__path__',
|
|
'__spec__', '__loader__', '__package__', '__cached__']:
|
|
self.declare_var(EncodedString(var_name), py_object_type, None)
|
|
self.process_include(Code.IncludeCode("Python.h", initial=True))
|
|
|
|
def qualifying_scope(self):
|
|
return self.parent_module
|
|
|
|
def global_scope(self):
|
|
return self
|
|
|
|
def lookup(self, name, language_level=None, str_is_str=None):
|
|
entry = self.lookup_here(name)
|
|
if entry is not None:
|
|
return entry
|
|
|
|
if language_level is None:
|
|
language_level = self.context.language_level if self.context is not None else 3
|
|
if str_is_str is None:
|
|
str_is_str = language_level == 2 or (
|
|
self.context is not None and Future.unicode_literals not in self.context.future_directives)
|
|
|
|
return self.outer_scope.lookup(name, language_level=language_level, str_is_str=str_is_str)
|
|
|
|
def declare_tuple_type(self, pos, components):
|
|
components = tuple(components)
|
|
try:
|
|
ttype = self._cached_tuple_types[components]
|
|
except KeyError:
|
|
ttype = self._cached_tuple_types[components] = PyrexTypes.c_tuple_type(components)
|
|
cname = ttype.cname
|
|
entry = self.lookup_here(cname)
|
|
if not entry:
|
|
scope = StructOrUnionScope(cname)
|
|
for ix, component in enumerate(components):
|
|
scope.declare_var(name="f%s" % ix, type=component, pos=pos)
|
|
struct_entry = self.declare_struct_or_union(
|
|
cname + '_struct', 'struct', scope, typedef_flag=True, pos=pos, cname=cname)
|
|
self.type_entries.remove(struct_entry)
|
|
ttype.struct_entry = struct_entry
|
|
entry = self.declare_type(cname, ttype, pos, cname)
|
|
ttype.entry = entry
|
|
return entry
|
|
|
|
def declare_builtin(self, name, pos):
|
|
if not hasattr(builtins, name) \
|
|
and name not in Code.non_portable_builtins_map \
|
|
and name not in Code.uncachable_builtins:
|
|
if self.has_import_star:
|
|
entry = self.declare_var(name, py_object_type, pos)
|
|
return entry
|
|
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)
|
|
# unknown - assume it's builtin and look it up at runtime
|
|
entry = self.declare(name, None, py_object_type, pos, 'private')
|
|
entry.is_builtin = 1
|
|
return entry
|
|
if Options.cache_builtins:
|
|
for entry in self.cached_builtins:
|
|
if entry.name == name:
|
|
return entry
|
|
if name == 'globals' and not self.old_style_globals:
|
|
return self.outer_scope.lookup('__Pyx_Globals')
|
|
else:
|
|
entry = self.declare(None, None, py_object_type, pos, 'private')
|
|
if Options.cache_builtins and name not in Code.uncachable_builtins:
|
|
entry.is_builtin = 1
|
|
entry.is_const = 1 # cached
|
|
entry.name = name
|
|
entry.cname = Naming.builtin_prefix + name
|
|
self.cached_builtins.append(entry)
|
|
self.undeclared_cached_builtins.append(entry)
|
|
else:
|
|
entry.is_builtin = 1
|
|
entry.name = name
|
|
entry.qualified_name = self.builtin_scope().qualify_name(name)
|
|
return entry
|
|
|
|
def find_module(self, module_name, pos, relative_level=-1):
|
|
# Find a module in the import namespace, interpreting
|
|
# relative imports relative to this module's parent.
|
|
# Finds and parses the module's .pxd file if the module
|
|
# has not been referenced before.
|
|
relative_to = None
|
|
absolute_fallback = False
|
|
if relative_level is not None and relative_level > 0:
|
|
# explicit relative cimport
|
|
# error of going beyond top-level is handled in cimport node
|
|
relative_to = self
|
|
while relative_level > 0 and relative_to:
|
|
relative_to = relative_to.parent_module
|
|
relative_level -= 1
|
|
elif relative_level != 0:
|
|
# -1 or None: try relative cimport first, then absolute
|
|
relative_to = self.parent_module
|
|
absolute_fallback = True
|
|
|
|
module_scope = self.global_scope()
|
|
return module_scope.context.find_module(
|
|
module_name, relative_to=relative_to, pos=pos, absolute_fallback=absolute_fallback)
|
|
|
|
def find_submodule(self, name):
|
|
# Find and return scope for a submodule of this module,
|
|
# creating a new empty one if necessary. Doesn't parse .pxd.
|
|
if '.' in name:
|
|
name, submodule = name.split('.', 1)
|
|
else:
|
|
submodule = None
|
|
scope = self.lookup_submodule(name)
|
|
if not scope:
|
|
scope = ModuleScope(name, parent_module=self, context=self.context)
|
|
self.module_entries[name] = scope
|
|
if submodule:
|
|
scope = scope.find_submodule(submodule)
|
|
return scope
|
|
|
|
def lookup_submodule(self, name):
|
|
# Return scope for submodule of this module, or None.
|
|
if '.' in name:
|
|
name, submodule = name.split('.', 1)
|
|
else:
|
|
submodule = None
|
|
module = self.module_entries.get(name, None)
|
|
if submodule and module is not None:
|
|
module = module.lookup_submodule(submodule)
|
|
return module
|
|
|
|
def add_include_file(self, filename, verbatim_include=None, late=False):
|
|
"""
|
|
Add `filename` as include file. Add `verbatim_include` as
|
|
verbatim text in the C file.
|
|
Both `filename` and `verbatim_include` can be `None` or empty.
|
|
"""
|
|
inc = Code.IncludeCode(filename, verbatim_include, late=late)
|
|
self.process_include(inc)
|
|
|
|
def process_include(self, inc):
|
|
"""
|
|
Add `inc`, which is an instance of `IncludeCode`, to this
|
|
`ModuleScope`. This either adds a new element to the
|
|
`c_includes` dict or it updates an existing entry.
|
|
|
|
In detail: the values of the dict `self.c_includes` are
|
|
instances of `IncludeCode` containing the code to be put in the
|
|
generated C file. The keys of the dict are needed to ensure
|
|
uniqueness in two ways: if an include file is specified in
|
|
multiple "cdef extern" blocks, only one `#include` statement is
|
|
generated. Second, the same include might occur multiple times
|
|
if we find it through multiple "cimport" paths. So we use the
|
|
generated code (of the form `#include "header.h"`) as dict key.
|
|
|
|
If verbatim code does not belong to any include file (i.e. it
|
|
was put in a `cdef extern from *` block), then we use a unique
|
|
dict key: namely, the `sortkey()`.
|
|
|
|
One `IncludeCode` object can contain multiple pieces of C code:
|
|
one optional "main piece" for the include file and several other
|
|
pieces for the verbatim code. The `IncludeCode.dict_update`
|
|
method merges the pieces of two different `IncludeCode` objects
|
|
if needed.
|
|
"""
|
|
key = inc.mainpiece()
|
|
if key is None:
|
|
key = inc.sortkey()
|
|
inc.dict_update(self.c_includes, key)
|
|
inc = self.c_includes[key]
|
|
|
|
def add_imported_module(self, scope):
|
|
if scope not in self.cimported_modules:
|
|
for inc in scope.c_includes.values():
|
|
self.process_include(inc)
|
|
self.cimported_modules.append(scope)
|
|
for m in scope.cimported_modules:
|
|
self.add_imported_module(m)
|
|
|
|
def add_imported_entry(self, name, entry, pos):
|
|
if entry.is_pyglobal:
|
|
# Allow cimports to follow imports.
|
|
entry.is_variable = True
|
|
if entry not in self.entries:
|
|
self.entries[name] = entry
|
|
else:
|
|
warning(pos, "'%s' redeclared " % name, 0)
|
|
|
|
def declare_module(self, name, scope, pos):
|
|
# Declare a cimported module. This is represented as a
|
|
# Python module-level variable entry with a module
|
|
# scope attached to it. Reports an error and returns
|
|
# None if previously declared as something else.
|
|
entry = self.lookup_here(name)
|
|
if entry:
|
|
if entry.is_pyglobal and entry.as_module is scope:
|
|
return entry # Already declared as the same module
|
|
if not (entry.is_pyglobal and not entry.as_module):
|
|
# SAGE -- I put this here so Pyrex
|
|
# cimport's work across directories.
|
|
# Currently it tries to multiply define
|
|
# every module appearing in an import list.
|
|
# It shouldn't be an error for a module
|
|
# name to appear again, and indeed the generated
|
|
# code compiles fine.
|
|
return entry
|
|
else:
|
|
entry = self.declare_var(name, py_object_type, pos)
|
|
entry.is_variable = 0
|
|
entry.as_module = scope
|
|
self.add_imported_module(scope)
|
|
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 global variable. If it is a Python
|
|
# object type, and not declared with cdef, it will live
|
|
# in the module dictionary, otherwise it will be a C
|
|
# global variable.
|
|
if not visibility in ('private', 'public', 'extern'):
|
|
error(pos, "Module-level variable cannot be declared %s" % visibility)
|
|
if not is_cdef:
|
|
if type is unspecified_type:
|
|
type = py_object_type
|
|
if not (type.is_pyobject and not type.is_extension_type):
|
|
raise InternalError(
|
|
"Non-cdef global variable is not a generic Python object")
|
|
|
|
if not cname:
|
|
defining = not in_pxd
|
|
if visibility == 'extern' or (visibility == 'public' and defining):
|
|
cname = name
|
|
else:
|
|
cname = self.mangle(Naming.var_prefix, name)
|
|
|
|
entry = self.lookup_here(name)
|
|
if entry and entry.defined_in_pxd:
|
|
#if visibility != 'private' and visibility != entry.visibility:
|
|
# warning(pos, "Variable '%s' previously declared as '%s'" % (name, entry.visibility), 1)
|
|
if not entry.type.same_as(type):
|
|
if visibility == 'extern' and entry.visibility == 'extern':
|
|
warning(pos, "Variable '%s' type does not match previous declaration" % name, 1)
|
|
entry.type = type
|
|
#else:
|
|
# error(pos, "Variable '%s' type does not match previous declaration" % name)
|
|
if entry.visibility != "private":
|
|
mangled_cname = self.mangle(Naming.var_prefix, name)
|
|
if entry.cname == mangled_cname:
|
|
cname = name
|
|
entry.cname = name
|
|
if not entry.is_implemented:
|
|
entry.is_implemented = True
|
|
return entry
|
|
|
|
entry = Scope.declare_var(self, name, type, pos,
|
|
cname=cname, visibility=visibility,
|
|
api=api, in_pxd=in_pxd, is_cdef=is_cdef)
|
|
if is_cdef:
|
|
entry.is_cglobal = 1
|
|
if entry.type.declaration_value:
|
|
entry.init = entry.type.declaration_value
|
|
self.var_entries.append(entry)
|
|
else:
|
|
entry.is_pyglobal = 1
|
|
if Options.cimport_from_pyx:
|
|
entry.used = 1
|
|
return entry
|
|
|
|
def declare_cfunction(self, name, type, pos,
|
|
cname=None, visibility='private', api=0, in_pxd=0,
|
|
defining=0, modifiers=(), utility_code=None, overridable=False):
|
|
if not defining and 'inline' in modifiers:
|
|
# TODO(github/1736): Make this an error.
|
|
warning(pos, "Declarations should not be declared inline.", 1)
|
|
# Add an entry for a C function.
|
|
if not cname:
|
|
if visibility == 'extern' or (visibility == 'public' and defining):
|
|
cname = name
|
|
else:
|
|
cname = self.mangle(Naming.func_prefix, name)
|
|
if visibility == 'extern' and type.optional_arg_count:
|
|
error(pos, "Extern functions cannot have default arguments values.")
|
|
entry = self.lookup_here(name)
|
|
if entry and entry.defined_in_pxd:
|
|
if entry.visibility != "private":
|
|
mangled_cname = self.mangle(Naming.var_prefix, name)
|
|
if entry.cname == mangled_cname:
|
|
cname = name
|
|
entry.cname = cname
|
|
entry.func_cname = cname
|
|
entry = Scope.declare_cfunction(
|
|
self, name, type, pos,
|
|
cname=cname, visibility=visibility, api=api, in_pxd=in_pxd,
|
|
defining=defining, modifiers=modifiers, utility_code=utility_code,
|
|
overridable=overridable)
|
|
return entry
|
|
|
|
def declare_global(self, name, pos):
|
|
entry = self.lookup_here(name)
|
|
if not entry:
|
|
self.declare_var(name, py_object_type, pos)
|
|
|
|
def use_utility_code(self, new_code):
|
|
if new_code is not None:
|
|
self.utility_code_list.append(new_code)
|
|
|
|
def use_entry_utility_code(self, entry):
|
|
if entry is None:
|
|
return
|
|
if entry.utility_code:
|
|
self.utility_code_list.append(entry.utility_code)
|
|
if entry.utility_code_definition:
|
|
self.utility_code_list.append(entry.utility_code_definition)
|
|
|
|
def declare_c_class(self, name, pos, defining=0, implementing=0,
|
|
module_name=None, base_type=None, objstruct_cname=None,
|
|
typeobj_cname=None, typeptr_cname=None, visibility='private',
|
|
typedef_flag=0, api=0, check_size=None,
|
|
buffer_defaults=None, shadow=0):
|
|
# If this is a non-extern typedef class, expose the typedef, but use
|
|
# the non-typedef struct internally to avoid needing forward
|
|
# declarations for anonymous structs.
|
|
if typedef_flag and visibility != 'extern':
|
|
if not (visibility == 'public' or api):
|
|
warning(pos, "ctypedef only valid for 'extern' , 'public', and 'api'", 2)
|
|
objtypedef_cname = objstruct_cname
|
|
typedef_flag = 0
|
|
else:
|
|
objtypedef_cname = None
|
|
#
|
|
# Look for previous declaration as a type
|
|
#
|
|
entry = self.lookup_here(name)
|
|
if entry and not shadow:
|
|
type = entry.type
|
|
if not (entry.is_type and type.is_extension_type):
|
|
entry = None # Will cause redeclaration and produce an error
|
|
else:
|
|
scope = type.scope
|
|
if typedef_flag and (not scope or scope.defined):
|
|
self.check_previous_typedef_flag(entry, typedef_flag, pos)
|
|
if (scope and scope.defined) or (base_type and type.base_type):
|
|
if base_type and base_type is not type.base_type:
|
|
error(pos, "Base type does not match previous declaration")
|
|
if base_type and not type.base_type:
|
|
type.base_type = base_type
|
|
#
|
|
# Make a new entry if needed
|
|
#
|
|
if not entry or shadow:
|
|
type = PyrexTypes.PyExtensionType(
|
|
name, typedef_flag, base_type, visibility == 'extern', check_size=check_size)
|
|
type.pos = pos
|
|
type.buffer_defaults = buffer_defaults
|
|
if objtypedef_cname is not None:
|
|
type.objtypedef_cname = objtypedef_cname
|
|
if visibility == 'extern':
|
|
type.module_name = module_name
|
|
else:
|
|
type.module_name = self.qualified_name
|
|
if typeptr_cname:
|
|
type.typeptr_cname = typeptr_cname
|
|
else:
|
|
type.typeptr_cname = self.mangle(Naming.typeptr_prefix, name)
|
|
entry = self.declare_type(name, type, pos, visibility = visibility,
|
|
defining = 0, shadow = shadow)
|
|
entry.is_cclass = True
|
|
if objstruct_cname:
|
|
type.objstruct_cname = objstruct_cname
|
|
elif not entry.in_cinclude:
|
|
type.objstruct_cname = self.mangle(Naming.objstruct_prefix, name)
|
|
else:
|
|
error(entry.pos,
|
|
"Object name required for 'public' or 'extern' C class")
|
|
self.attach_var_entry_to_c_class(entry)
|
|
self.c_class_entries.append(entry)
|
|
#
|
|
# Check for re-definition and create scope if needed
|
|
#
|
|
if not type.scope:
|
|
if defining or implementing:
|
|
scope = CClassScope(name = name, outer_scope = self,
|
|
visibility = visibility)
|
|
scope.directives = self.directives.copy()
|
|
if base_type and base_type.scope:
|
|
scope.declare_inherited_c_attributes(base_type.scope)
|
|
type.set_scope(scope)
|
|
self.type_entries.append(entry)
|
|
else:
|
|
if defining and type.scope.defined:
|
|
error(pos, "C class '%s' already defined" % name)
|
|
elif implementing and type.scope.implemented:
|
|
error(pos, "C class '%s' already implemented" % name)
|
|
#
|
|
# Fill in options, checking for compatibility with any previous declaration
|
|
#
|
|
if defining:
|
|
entry.defined_in_pxd = 1
|
|
if implementing: # So that filenames in runtime exceptions refer to
|
|
entry.pos = pos # the .pyx file and not the .pxd file
|
|
if visibility != 'private' and entry.visibility != visibility:
|
|
error(pos, "Class '%s' previously declared as '%s'"
|
|
% (name, entry.visibility))
|
|
if api:
|
|
entry.api = 1
|
|
if objstruct_cname:
|
|
if type.objstruct_cname and type.objstruct_cname != objstruct_cname:
|
|
error(pos, "Object struct name differs from previous declaration")
|
|
type.objstruct_cname = objstruct_cname
|
|
if typeobj_cname:
|
|
if type.typeobj_cname and type.typeobj_cname != typeobj_cname:
|
|
error(pos, "Type object name differs from previous declaration")
|
|
type.typeobj_cname = typeobj_cname
|
|
|
|
if self.directives.get('final'):
|
|
entry.type.is_final_type = True
|
|
|
|
# cdef classes are always exported, but we need to set it to
|
|
# distinguish between unused Cython utility code extension classes
|
|
entry.used = True
|
|
|
|
#
|
|
# Return new or existing entry
|
|
#
|
|
return entry
|
|
|
|
def allocate_vtable_names(self, entry):
|
|
# If extension type has a vtable, allocate vtable struct and
|
|
# slot names for it.
|
|
type = entry.type
|
|
if type.base_type and type.base_type.vtabslot_cname:
|
|
#print "...allocating vtabslot_cname because base type has one" ###
|
|
type.vtabslot_cname = "%s.%s" % (
|
|
Naming.obj_base_cname, type.base_type.vtabslot_cname)
|
|
elif type.scope and type.scope.cfunc_entries:
|
|
# one special case here: when inheriting from builtin
|
|
# types, the methods may also be built-in, in which
|
|
# case they won't need a vtable
|
|
entry_count = len(type.scope.cfunc_entries)
|
|
base_type = type.base_type
|
|
while base_type:
|
|
# FIXME: this will break if we ever get non-inherited C methods
|
|
if not base_type.scope or entry_count > len(base_type.scope.cfunc_entries):
|
|
break
|
|
if base_type.is_builtin_type:
|
|
# builtin base type defines all methods => no vtable needed
|
|
return
|
|
base_type = base_type.base_type
|
|
#print "...allocating vtabslot_cname because there are C methods" ###
|
|
type.vtabslot_cname = Naming.vtabslot_cname
|
|
if type.vtabslot_cname:
|
|
#print "...allocating other vtable related cnames" ###
|
|
type.vtabstruct_cname = self.mangle(Naming.vtabstruct_prefix, entry.name)
|
|
type.vtabptr_cname = self.mangle(Naming.vtabptr_prefix, entry.name)
|
|
|
|
def check_c_classes_pxd(self):
|
|
# Performs post-analysis checking and finishing up of extension types
|
|
# being implemented in this module. This is called only for the .pxd.
|
|
#
|
|
# Checks all extension types declared in this scope to
|
|
# make sure that:
|
|
#
|
|
# * The extension type is fully declared
|
|
#
|
|
# Also allocates a name for the vtable if needed.
|
|
#
|
|
for entry in self.c_class_entries:
|
|
# Check defined
|
|
if not entry.type.scope:
|
|
error(entry.pos, "C class '%s' is declared but not defined" % entry.name)
|
|
|
|
def check_c_class(self, entry):
|
|
type = entry.type
|
|
name = entry.name
|
|
visibility = entry.visibility
|
|
# Check defined
|
|
if not type.scope:
|
|
error(entry.pos, "C class '%s' is declared but not defined" % name)
|
|
# Generate typeobj_cname
|
|
if visibility != 'extern' and not type.typeobj_cname:
|
|
type.typeobj_cname = self.mangle(Naming.typeobj_prefix, name)
|
|
## Generate typeptr_cname
|
|
#type.typeptr_cname = self.mangle(Naming.typeptr_prefix, name)
|
|
# Check C methods defined
|
|
if type.scope:
|
|
for method_entry in type.scope.cfunc_entries:
|
|
if not method_entry.is_inherited and not method_entry.func_cname:
|
|
error(method_entry.pos, "C method '%s' is declared but not defined" %
|
|
method_entry.name)
|
|
# Allocate vtable name if necessary
|
|
if type.vtabslot_cname:
|
|
#print "ModuleScope.check_c_classes: allocating vtable cname for", self ###
|
|
type.vtable_cname = self.mangle(Naming.vtable_prefix, entry.name)
|
|
|
|
def check_c_classes(self):
|
|
# Performs post-analysis checking and finishing up of extension types
|
|
# being implemented in this module. This is called only for the main
|
|
# .pyx file scope, not for cimported .pxd scopes.
|
|
#
|
|
# Checks all extension types declared in this scope to
|
|
# make sure that:
|
|
#
|
|
# * The extension type is implemented
|
|
# * All required object and type names have been specified or generated
|
|
# * All non-inherited C methods are implemented
|
|
#
|
|
# Also allocates a name for the vtable if needed.
|
|
#
|
|
debug_check_c_classes = 0
|
|
if debug_check_c_classes:
|
|
print("Scope.check_c_classes: checking scope " + self.qualified_name)
|
|
for entry in self.c_class_entries:
|
|
if debug_check_c_classes:
|
|
print("...entry %s %s" % (entry.name, entry))
|
|
print("......type = ", entry.type)
|
|
print("......visibility = ", entry.visibility)
|
|
self.check_c_class(entry)
|
|
|
|
def check_c_functions(self):
|
|
# Performs post-analysis checking making sure all
|
|
# defined c functions are actually implemented.
|
|
for name, entry in self.entries.items():
|
|
if entry.is_cfunction:
|
|
if (entry.defined_in_pxd
|
|
and entry.scope is self
|
|
and entry.visibility != 'extern'
|
|
and not entry.in_cinclude
|
|
and not entry.is_implemented):
|
|
error(entry.pos, "Non-extern C function '%s' declared but not defined" % name)
|
|
|
|
def attach_var_entry_to_c_class(self, entry):
|
|
# The name of an extension class has to serve as both a type
|
|
# name and a variable name holding the type object. It is
|
|
# represented in the symbol table by a type entry with a
|
|
# variable entry attached to it. For the variable entry,
|
|
# we use a read-only C global variable whose name is an
|
|
# expression that refers to the type object.
|
|
from . import Builtin
|
|
var_entry = Entry(name = entry.name,
|
|
type = Builtin.type_type,
|
|
pos = entry.pos,
|
|
cname = entry.type.typeptr_cname)
|
|
var_entry.qualified_name = entry.qualified_name
|
|
var_entry.is_variable = 1
|
|
var_entry.is_cglobal = 1
|
|
var_entry.is_readonly = 1
|
|
var_entry.scope = entry.scope
|
|
entry.as_variable = var_entry
|
|
|
|
def is_cpp(self):
|
|
return self.cpp
|
|
|
|
def infer_types(self):
|
|
from .TypeInference import PyObjectTypeInferer
|
|
PyObjectTypeInferer().infer_types(self)
|
|
|
|
|
|
class LocalScope(Scope):
|
|
|
|
# Does the function have a 'with gil:' block?
|
|
has_with_gil_block = False
|
|
|
|
# Transient attribute, used for symbol table variable declarations
|
|
_in_with_gil_block = False
|
|
|
|
def __init__(self, name, outer_scope, parent_scope = None):
|
|
if parent_scope is None:
|
|
parent_scope = outer_scope
|
|
Scope.__init__(self, name, outer_scope, parent_scope)
|
|
|
|
def mangle(self, prefix, name):
|
|
return prefix + name
|
|
|
|
def declare_arg(self, name, type, pos):
|
|
# Add an entry for an argument of a function.
|
|
cname = self.mangle(Naming.var_prefix, name)
|
|
entry = self.declare(name, cname, type, pos, 'private')
|
|
entry.is_variable = 1
|
|
if type.is_pyobject:
|
|
entry.init = "0"
|
|
entry.is_arg = 1
|
|
#entry.borrowed = 1 # Not using borrowed arg refs for now
|
|
self.arg_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 local variable.
|
|
if visibility in ('public', 'readonly'):
|
|
error(pos, "Local variable cannot be declared %s" % visibility)
|
|
entry = Scope.declare_var(self, name, type, pos,
|
|
cname=cname, visibility=visibility,
|
|
api=api, in_pxd=in_pxd, is_cdef=is_cdef)
|
|
if entry.type.declaration_value:
|
|
entry.init = entry.type.declaration_value
|
|
entry.is_local = 1
|
|
|
|
entry.in_with_gil_block = self._in_with_gil_block
|
|
self.var_entries.append(entry)
|
|
return entry
|
|
|
|
def declare_global(self, name, pos):
|
|
# Pull entry from global scope into local scope.
|
|
if self.lookup_here(name):
|
|
warning(pos, "'%s' redeclared ", 0)
|
|
else:
|
|
entry = self.global_scope().lookup_target(name)
|
|
self.entries[name] = entry
|
|
|
|
def declare_nonlocal(self, name, pos):
|
|
# Pull entry from outer scope into local scope
|
|
orig_entry = self.lookup_here(name)
|
|
if orig_entry and orig_entry.scope is self and not orig_entry.from_closure:
|
|
error(pos, "'%s' redeclared as nonlocal" % name)
|
|
orig_entry.already_declared_here()
|
|
else:
|
|
entry = self.lookup(name)
|
|
if entry is None or not entry.from_closure:
|
|
error(pos, "no binding for nonlocal '%s' found" % name)
|
|
|
|
def lookup(self, name):
|
|
# Look up name in this scope or an enclosing one.
|
|
# Return None if not found.
|
|
entry = Scope.lookup(self, name)
|
|
if entry is not None:
|
|
entry_scope = entry.scope
|
|
while entry_scope.is_genexpr_scope:
|
|
entry_scope = entry_scope.outer_scope
|
|
if entry_scope is not self and entry_scope.is_closure_scope:
|
|
if hasattr(entry.scope, "scope_class"):
|
|
raise InternalError("lookup() after scope class created.")
|
|
# The actual c fragment for the different scopes differs
|
|
# on the outside and inside, so we make a new entry
|
|
entry.in_closure = True
|
|
inner_entry = InnerEntry(entry, self)
|
|
inner_entry.is_variable = True
|
|
self.entries[name] = inner_entry
|
|
return inner_entry
|
|
return entry
|
|
|
|
def mangle_closure_cnames(self, outer_scope_cname):
|
|
for scope in self.iter_local_scopes():
|
|
for entry in scope.entries.values():
|
|
if entry.from_closure:
|
|
cname = entry.outer_entry.cname
|
|
if self.is_passthrough:
|
|
entry.cname = cname
|
|
else:
|
|
if cname.startswith(Naming.cur_scope_cname):
|
|
cname = cname[len(Naming.cur_scope_cname)+2:]
|
|
entry.cname = "%s->%s" % (outer_scope_cname, cname)
|
|
elif entry.in_closure:
|
|
entry.original_cname = entry.cname
|
|
entry.cname = "%s->%s" % (Naming.cur_scope_cname, entry.cname)
|
|
|
|
|
|
class GeneratorExpressionScope(Scope):
|
|
"""Scope for generator expressions and comprehensions. As opposed
|
|
to generators, these can be easily inlined in some cases, so all
|
|
we really need is a scope that holds the loop variable(s).
|
|
"""
|
|
is_genexpr_scope = True
|
|
|
|
def __init__(self, outer_scope):
|
|
parent_scope = outer_scope
|
|
# TODO: also ignore class scopes?
|
|
while parent_scope.is_genexpr_scope:
|
|
parent_scope = parent_scope.parent_scope
|
|
name = parent_scope.global_scope().next_id(Naming.genexpr_id_ref)
|
|
Scope.__init__(self, name, outer_scope, parent_scope)
|
|
self.directives = outer_scope.directives
|
|
self.genexp_prefix = "%s%d%s" % (Naming.pyrex_prefix, len(name), name)
|
|
|
|
# Class/ExtType scopes are filled at class creation time, i.e. from the
|
|
# module init function or surrounding function.
|
|
while outer_scope.is_genexpr_scope or outer_scope.is_c_class_scope or outer_scope.is_py_class_scope:
|
|
outer_scope = outer_scope.outer_scope
|
|
self.var_entries = outer_scope.var_entries # keep declarations outside
|
|
outer_scope.subscopes.add(self)
|
|
|
|
def mangle(self, prefix, name):
|
|
return '%s%s' % (self.genexp_prefix, self.parent_scope.mangle(prefix, name))
|
|
|
|
def declare_var(self, name, type, pos,
|
|
cname = None, visibility = 'private',
|
|
api = 0, in_pxd = 0, is_cdef = True):
|
|
if type is unspecified_type:
|
|
# if the outer scope defines a type for this variable, inherit it
|
|
outer_entry = self.outer_scope.lookup(name)
|
|
if outer_entry and outer_entry.is_variable:
|
|
type = outer_entry.type # may still be 'unspecified_type' !
|
|
# the parent scope needs to generate code for the variable, but
|
|
# this scope must hold its name exclusively
|
|
cname = '%s%s' % (self.genexp_prefix, self.parent_scope.mangle(Naming.var_prefix, name or self.next_id()))
|
|
entry = self.declare(name, cname, type, pos, visibility)
|
|
entry.is_variable = True
|
|
if self.parent_scope.is_module_scope:
|
|
entry.is_cglobal = True
|
|
else:
|
|
entry.is_local = True
|
|
entry.in_subscope = True
|
|
self.var_entries.append(entry)
|
|
self.entries[name] = entry
|
|
return entry
|
|
|
|
def declare_pyfunction(self, name, pos, allow_redefine=False):
|
|
return self.outer_scope.declare_pyfunction(
|
|
name, pos, allow_redefine)
|
|
|
|
def declare_lambda_function(self, func_cname, pos):
|
|
return self.outer_scope.declare_lambda_function(func_cname, pos)
|
|
|
|
def add_lambda_def(self, def_node):
|
|
return self.outer_scope.add_lambda_def(def_node)
|
|
|
|
|
|
class ClosureScope(LocalScope):
|
|
|
|
is_closure_scope = True
|
|
|
|
def __init__(self, name, scope_name, outer_scope, parent_scope=None):
|
|
LocalScope.__init__(self, name, outer_scope, parent_scope)
|
|
self.closure_cname = "%s%s" % (Naming.closure_scope_prefix, scope_name)
|
|
|
|
# def mangle_closure_cnames(self, scope_var):
|
|
# for entry in self.entries.values() + self.temp_entries:
|
|
# entry.in_closure = 1
|
|
# LocalScope.mangle_closure_cnames(self, scope_var)
|
|
|
|
# def mangle(self, prefix, name):
|
|
# return "%s->%s" % (self.cur_scope_cname, name)
|
|
# return "%s->%s" % (self.closure_cname, name)
|
|
|
|
def declare_pyfunction(self, name, pos, allow_redefine=False):
|
|
return LocalScope.declare_pyfunction(self, name, pos, allow_redefine, visibility='private')
|
|
|
|
|
|
class StructOrUnionScope(Scope):
|
|
# Namespace of a C struct or union.
|
|
|
|
def __init__(self, name="?"):
|
|
Scope.__init__(self, name, None, None)
|
|
|
|
def declare_var(self, name, type, pos,
|
|
cname = None, visibility = 'private',
|
|
api = 0, in_pxd = 0, is_cdef = 0,
|
|
allow_pyobject=False, allow_memoryview=False):
|
|
# Add an entry for an attribute.
|
|
if not cname:
|
|
cname = name
|
|
if visibility == 'private':
|
|
cname = c_safe_identifier(cname)
|
|
if type.is_cfunction:
|
|
type = PyrexTypes.CPtrType(type)
|
|
entry = self.declare(name, cname, type, pos, visibility)
|
|
entry.is_variable = 1
|
|
self.var_entries.append(entry)
|
|
if type.is_pyobject and not allow_pyobject:
|
|
error(pos, "C struct/union member cannot be a Python object")
|
|
elif type.is_memoryviewslice and not allow_memoryview:
|
|
# Memory views wrap their buffer owner as a Python object.
|
|
error(pos, "C struct/union member cannot be a memory view")
|
|
if visibility != 'private':
|
|
error(pos, "C struct/union member cannot be declared %s" % visibility)
|
|
return entry
|
|
|
|
def declare_cfunction(self, name, type, pos,
|
|
cname=None, visibility='private', api=0, in_pxd=0,
|
|
defining=0, modifiers=(), overridable=False): # currently no utility code ...
|
|
if overridable:
|
|
error(pos, "C struct/union member cannot be declared 'cpdef'")
|
|
return self.declare_var(name, type, pos,
|
|
cname=cname, visibility=visibility)
|
|
|
|
|
|
class ClassScope(Scope):
|
|
# Abstract base class for namespace of
|
|
# Python class or extension type.
|
|
#
|
|
# class_name string Python name of the class
|
|
# scope_prefix string Additional prefix for names
|
|
# declared in the class
|
|
# doc string or None Doc string
|
|
|
|
def __init__(self, name, outer_scope):
|
|
Scope.__init__(self, name, outer_scope, outer_scope)
|
|
self.class_name = name
|
|
self.doc = None
|
|
|
|
def lookup(self, name):
|
|
entry = Scope.lookup(self, name)
|
|
if entry:
|
|
return entry
|
|
if name == "classmethod":
|
|
# We don't want to use the builtin classmethod here 'cause it won't do the
|
|
# right thing in this scope (as the class members aren't still functions).
|
|
# Don't want to add a cfunction to this scope 'cause that would mess with
|
|
# the type definition, so we just return the right entry.
|
|
entry = Entry(
|
|
"classmethod",
|
|
"__Pyx_Method_ClassMethod",
|
|
PyrexTypes.CFuncType(
|
|
py_object_type,
|
|
[PyrexTypes.CFuncTypeArg("", py_object_type, None)], 0, 0))
|
|
entry.utility_code_definition = Code.UtilityCode.load_cached("ClassMethod", "CythonFunction.c")
|
|
self.use_entry_utility_code(entry)
|
|
entry.is_cfunction = 1
|
|
return entry
|
|
|
|
|
|
class PyClassScope(ClassScope):
|
|
# Namespace of a Python class.
|
|
#
|
|
# class_obj_cname string C variable holding class object
|
|
|
|
is_py_class_scope = 1
|
|
|
|
def mangle_class_private_name(self, name):
|
|
return self.mangle_special_name(name)
|
|
|
|
def mangle_special_name(self, name):
|
|
if name and name.startswith('__') and not name.endswith('__'):
|
|
name = EncodedString('_%s%s' % (self.class_name.lstrip('_'), name))
|
|
return name
|
|
|
|
def lookup_here(self, name):
|
|
name = self.mangle_special_name(name)
|
|
return ClassScope.lookup_here(self, name)
|
|
|
|
def declare_var(self, name, type, pos,
|
|
cname = None, visibility = 'private',
|
|
api = 0, in_pxd = 0, is_cdef = 0):
|
|
name = self.mangle_special_name(name)
|
|
if type is unspecified_type:
|
|
type = py_object_type
|
|
# Add an entry for a class attribute.
|
|
entry = Scope.declare_var(self, name, type, pos,
|
|
cname=cname, visibility=visibility,
|
|
api=api, in_pxd=in_pxd, is_cdef=is_cdef)
|
|
entry.is_pyglobal = 1
|
|
entry.is_pyclass_attr = 1
|
|
return entry
|
|
|
|
def declare_nonlocal(self, name, pos):
|
|
# Pull entry from outer scope into local scope
|
|
orig_entry = self.lookup_here(name)
|
|
if orig_entry and orig_entry.scope is self and not orig_entry.from_closure:
|
|
error(pos, "'%s' redeclared as nonlocal" % name)
|
|
orig_entry.already_declared_here()
|
|
else:
|
|
entry = self.lookup(name)
|
|
if entry is None:
|
|
error(pos, "no binding for nonlocal '%s' found" % name)
|
|
else:
|
|
# FIXME: this works, but it's unclear if it's the
|
|
# right thing to do
|
|
self.entries[name] = entry
|
|
|
|
def declare_global(self, name, pos):
|
|
# Pull entry from global scope into local scope.
|
|
if self.lookup_here(name):
|
|
warning(pos, "'%s' redeclared ", 0)
|
|
else:
|
|
entry = self.global_scope().lookup_target(name)
|
|
self.entries[name] = entry
|
|
|
|
def add_default_value(self, type):
|
|
return self.outer_scope.add_default_value(type)
|
|
|
|
|
|
class CClassScope(ClassScope):
|
|
# Namespace of an extension type.
|
|
#
|
|
# parent_type CClassType
|
|
# #typeobj_cname string or None
|
|
# #objstruct_cname string
|
|
# method_table_cname string
|
|
# getset_table_cname string
|
|
# has_pyobject_attrs boolean Any PyObject attributes?
|
|
# has_memoryview_attrs boolean Any memory view attributes?
|
|
# has_cpp_class_attrs boolean Any (non-pointer) C++ attributes?
|
|
# has_cyclic_pyobject_attrs boolean Any PyObject attributes that may need GC?
|
|
# property_entries [Entry]
|
|
# defined boolean Defined in .pxd file
|
|
# implemented boolean Defined in .pyx file
|
|
# inherited_var_entries [Entry] Adapted var entries from base class
|
|
|
|
is_c_class_scope = 1
|
|
is_closure_class_scope = False
|
|
|
|
has_pyobject_attrs = False
|
|
has_memoryview_attrs = False
|
|
has_cpp_class_attrs = False
|
|
has_cyclic_pyobject_attrs = False
|
|
defined = False
|
|
implemented = False
|
|
|
|
def __init__(self, name, outer_scope, visibility):
|
|
ClassScope.__init__(self, name, outer_scope)
|
|
if visibility != 'extern':
|
|
self.method_table_cname = outer_scope.mangle(Naming.methtab_prefix, name)
|
|
self.getset_table_cname = outer_scope.mangle(Naming.gstab_prefix, name)
|
|
self.property_entries = []
|
|
self.inherited_var_entries = []
|
|
|
|
def needs_gc(self):
|
|
# If the type or any of its base types have Python-valued
|
|
# C attributes, then it needs to participate in GC.
|
|
if self.has_cyclic_pyobject_attrs and not self.directives.get('no_gc', False):
|
|
return True
|
|
base_type = self.parent_type.base_type
|
|
if base_type and base_type.scope is not None:
|
|
return base_type.scope.needs_gc()
|
|
elif self.parent_type.is_builtin_type:
|
|
return not self.parent_type.is_gc_simple
|
|
return False
|
|
|
|
def needs_tp_clear(self):
|
|
"""
|
|
Do we need to generate an implementation for the tp_clear slot? Can
|
|
be disabled to keep references for the __dealloc__ cleanup function.
|
|
"""
|
|
return self.needs_gc() and not self.directives.get('no_gc_clear', False)
|
|
|
|
def get_refcounted_entries(self, include_weakref=False,
|
|
include_gc_simple=True):
|
|
py_attrs = []
|
|
py_buffers = []
|
|
memoryview_slices = []
|
|
|
|
for entry in self.var_entries:
|
|
if entry.type.is_pyobject:
|
|
if include_weakref or (self.is_closure_class_scope or entry.name != "__weakref__"):
|
|
if include_gc_simple or not entry.type.is_gc_simple:
|
|
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)
|
|
|
|
def declare_var(self, name, type, pos,
|
|
cname = None, visibility = 'private',
|
|
api = 0, in_pxd = 0, is_cdef = 0):
|
|
if is_cdef:
|
|
# Add an entry for an attribute.
|
|
if self.defined:
|
|
error(pos,
|
|
"C attributes cannot be added in implementation part of"
|
|
" extension type defined in a pxd")
|
|
if not self.is_closure_class_scope and get_special_method_signature(name):
|
|
error(pos,
|
|
"The name '%s' is reserved for a special method."
|
|
% name)
|
|
if not cname:
|
|
cname = name
|
|
if visibility == 'private':
|
|
cname = c_safe_identifier(cname)
|
|
if type.is_cpp_class and visibility != 'extern':
|
|
type.check_nullary_constructor(pos)
|
|
self.use_utility_code(Code.UtilityCode("#include <new>"))
|
|
entry = self.declare(name, cname, type, pos, visibility)
|
|
entry.is_variable = 1
|
|
self.var_entries.append(entry)
|
|
if type.is_memoryviewslice:
|
|
self.has_memoryview_attrs = True
|
|
elif type.is_cpp_class:
|
|
self.has_cpp_class_attrs = True
|
|
elif type.is_pyobject and (self.is_closure_class_scope or name != '__weakref__'):
|
|
self.has_pyobject_attrs = True
|
|
if (not type.is_builtin_type
|
|
or not type.scope or type.scope.needs_gc()):
|
|
self.has_cyclic_pyobject_attrs = True
|
|
if visibility not in ('private', 'public', 'readonly'):
|
|
error(pos,
|
|
"Attribute of extension type cannot be declared %s" % visibility)
|
|
if visibility in ('public', 'readonly'):
|
|
# If the field is an external typedef, we cannot be sure about the type,
|
|
# so do conversion ourself rather than rely on the CPython mechanism (through
|
|
# a property; made in AnalyseDeclarationsTransform).
|
|
entry.needs_property = True
|
|
if not self.is_closure_class_scope and name == "__weakref__":
|
|
error(pos, "Special attribute __weakref__ cannot be exposed to Python")
|
|
if not (type.is_pyobject or type.can_coerce_to_pyobject(self)):
|
|
# we're not testing for coercion *from* Python here - that would fail later
|
|
error(pos, "C attribute of type '%s' cannot be accessed from Python" % type)
|
|
else:
|
|
entry.needs_property = False
|
|
return entry
|
|
else:
|
|
if type is unspecified_type:
|
|
type = py_object_type
|
|
# Add an entry for a class attribute.
|
|
entry = Scope.declare_var(self, name, type, pos,
|
|
cname=cname, visibility=visibility,
|
|
api=api, in_pxd=in_pxd, is_cdef=is_cdef)
|
|
entry.is_member = 1
|
|
entry.is_pyglobal = 1 # xxx: is_pyglobal changes behaviour in so many places that
|
|
# I keep it in for now. is_member should be enough
|
|
# later on
|
|
self.namespace_cname = "(PyObject *)%s" % self.parent_type.typeptr_cname
|
|
return entry
|
|
|
|
def declare_pyfunction(self, name, pos, allow_redefine=False):
|
|
# Add an entry for a method.
|
|
if name in richcmp_special_methods:
|
|
if self.lookup_here('__richcmp__'):
|
|
error(pos, "Cannot define both % and __richcmp__" % name)
|
|
elif name == '__richcmp__':
|
|
for n in richcmp_special_methods:
|
|
if self.lookup_here(n):
|
|
error(pos, "Cannot define both % and __richcmp__" % n)
|
|
if name == "__new__":
|
|
error(pos, "__new__ method of extension type will change semantics "
|
|
"in a future version of Pyrex and Cython. Use __cinit__ instead.")
|
|
entry = self.declare_var(name, py_object_type, pos,
|
|
visibility='extern')
|
|
special_sig = get_special_method_signature(name)
|
|
if special_sig:
|
|
# Special methods get put in the method table with a particular
|
|
# signature declared in advance.
|
|
entry.signature = special_sig
|
|
entry.is_special = 1
|
|
else:
|
|
entry.signature = pymethod_signature
|
|
entry.is_special = 0
|
|
|
|
self.pyfunc_entries.append(entry)
|
|
return entry
|
|
|
|
def lookup_here(self, name):
|
|
if not self.is_closure_class_scope and name == "__new__":
|
|
name = EncodedString("__cinit__")
|
|
entry = ClassScope.lookup_here(self, name)
|
|
if entry and entry.is_builtin_cmethod:
|
|
if not self.parent_type.is_builtin_type:
|
|
# For subtypes of builtin types, we can only return
|
|
# optimised C methods if the type if final.
|
|
# Otherwise, subtypes may choose to override the
|
|
# method, but the optimisation would prevent the
|
|
# subtype method from being called.
|
|
if not self.parent_type.is_final_type:
|
|
return None
|
|
return entry
|
|
|
|
def declare_cfunction(self, name, type, pos,
|
|
cname=None, visibility='private', api=0, in_pxd=0,
|
|
defining=0, modifiers=(), utility_code=None, overridable=False):
|
|
if get_special_method_signature(name) and not self.parent_type.is_builtin_type:
|
|
error(pos, "Special methods must be declared with 'def', not 'cdef'")
|
|
args = type.args
|
|
if not type.is_static_method:
|
|
if not args:
|
|
error(pos, "C method has no self argument")
|
|
elif not self.parent_type.assignable_from(args[0].type):
|
|
error(pos, "Self argument (%s) of C method '%s' does not match parent type (%s)" %
|
|
(args[0].type, name, self.parent_type))
|
|
entry = self.lookup_here(name)
|
|
if cname is None:
|
|
cname = c_safe_identifier(name)
|
|
if entry:
|
|
if not entry.is_cfunction:
|
|
warning(pos, "'%s' redeclared " % name, 0)
|
|
else:
|
|
if defining and entry.func_cname:
|
|
error(pos, "'%s' already defined" % name)
|
|
#print "CClassScope.declare_cfunction: checking signature" ###
|
|
if entry.is_final_cmethod and entry.is_inherited:
|
|
error(pos, "Overriding final methods is not allowed")
|
|
elif type.same_c_signature_as(entry.type, as_cmethod = 1) and type.nogil == entry.type.nogil:
|
|
# Fix with_gil vs nogil.
|
|
entry.type = entry.type.with_with_gil(type.with_gil)
|
|
elif type.compatible_signature_with(entry.type, as_cmethod = 1) and type.nogil == entry.type.nogil:
|
|
if (self.defined and not in_pxd
|
|
and not type.same_c_signature_as_resolved_type(entry.type, as_cmethod = 1, as_pxd_definition = 1)):
|
|
# TODO(robertwb): Make this an error.
|
|
warning(pos,
|
|
"Compatible but non-identical C method '%s' not redeclared "
|
|
"in definition part of extension type '%s'. "
|
|
"This may cause incorrect vtables to be generated." % (
|
|
name, self.class_name), 2)
|
|
warning(entry.pos, "Previous declaration is here", 2)
|
|
entry = self.add_cfunction(name, type, pos, cname, visibility='ignore', modifiers=modifiers)
|
|
else:
|
|
error(pos, "Signature not compatible with previous declaration")
|
|
error(entry.pos, "Previous declaration is here")
|
|
else:
|
|
if self.defined:
|
|
error(pos,
|
|
"C method '%s' not previously declared in definition part of"
|
|
" extension type '%s'" % (name, self.class_name))
|
|
entry = self.add_cfunction(name, type, pos, cname, visibility, modifiers)
|
|
if defining:
|
|
entry.func_cname = self.mangle(Naming.func_prefix, name)
|
|
entry.utility_code = utility_code
|
|
type.entry = entry
|
|
|
|
if u'inline' in modifiers:
|
|
entry.is_inline_cmethod = True
|
|
|
|
if (self.parent_type.is_final_type or entry.is_inline_cmethod or
|
|
self.directives.get('final')):
|
|
entry.is_final_cmethod = True
|
|
entry.final_func_cname = entry.func_cname
|
|
|
|
return entry
|
|
|
|
def add_cfunction(self, name, type, pos, cname, visibility, modifiers, inherited=False):
|
|
# Add a cfunction entry without giving it a func_cname.
|
|
prev_entry = self.lookup_here(name)
|
|
entry = ClassScope.add_cfunction(self, name, type, pos, cname,
|
|
visibility, modifiers, inherited=inherited)
|
|
entry.is_cmethod = 1
|
|
entry.prev_entry = prev_entry
|
|
return entry
|
|
|
|
def declare_builtin_cfunction(self, name, type, cname, utility_code = None):
|
|
# overridden methods of builtin types still have their Python
|
|
# equivalent that must be accessible to support bound methods
|
|
name = EncodedString(name)
|
|
entry = self.declare_cfunction(name, type, None, cname, visibility='extern',
|
|
utility_code=utility_code)
|
|
var_entry = Entry(name, name, py_object_type)
|
|
var_entry.qualified_name = name
|
|
var_entry.is_variable = 1
|
|
var_entry.is_builtin = 1
|
|
var_entry.utility_code = utility_code
|
|
var_entry.scope = entry.scope
|
|
entry.as_variable = var_entry
|
|
return entry
|
|
|
|
def declare_property(self, name, doc, pos):
|
|
entry = self.lookup_here(name)
|
|
if entry is None:
|
|
entry = self.declare(name, name, py_object_type, pos, 'private')
|
|
entry.is_property = 1
|
|
entry.doc = doc
|
|
entry.scope = PropertyScope(name,
|
|
outer_scope = self.global_scope(), parent_scope = self)
|
|
entry.scope.parent_type = self.parent_type
|
|
self.property_entries.append(entry)
|
|
return entry
|
|
|
|
def declare_inherited_c_attributes(self, base_scope):
|
|
# Declare entries for all the C attributes of an
|
|
# inherited type, with cnames modified appropriately
|
|
# to work with this type.
|
|
def adapt(cname):
|
|
return "%s.%s" % (Naming.obj_base_cname, base_entry.cname)
|
|
|
|
entries = base_scope.inherited_var_entries + base_scope.var_entries
|
|
for base_entry in entries:
|
|
entry = self.declare(
|
|
base_entry.name, adapt(base_entry.cname),
|
|
base_entry.type, None, 'private')
|
|
entry.is_variable = 1
|
|
self.inherited_var_entries.append(entry)
|
|
|
|
# If the class defined in a pxd, specific entries have not been added.
|
|
# Ensure now that the parent (base) scope has specific entries
|
|
# Iterate over a copy as get_all_specialized_function_types() will mutate
|
|
for base_entry in base_scope.cfunc_entries[:]:
|
|
if base_entry.type.is_fused:
|
|
base_entry.type.get_all_specialized_function_types()
|
|
|
|
for base_entry in base_scope.cfunc_entries:
|
|
cname = base_entry.cname
|
|
var_entry = base_entry.as_variable
|
|
is_builtin = var_entry and var_entry.is_builtin
|
|
if not is_builtin:
|
|
cname = adapt(cname)
|
|
entry = self.add_cfunction(base_entry.name, base_entry.type,
|
|
base_entry.pos, cname,
|
|
base_entry.visibility, base_entry.func_modifiers, inherited=True)
|
|
entry.is_inherited = 1
|
|
if base_entry.is_final_cmethod:
|
|
entry.is_final_cmethod = True
|
|
entry.is_inline_cmethod = base_entry.is_inline_cmethod
|
|
if (self.parent_scope == base_scope.parent_scope or
|
|
entry.is_inline_cmethod):
|
|
entry.final_func_cname = base_entry.final_func_cname
|
|
if is_builtin:
|
|
entry.is_builtin_cmethod = True
|
|
entry.as_variable = var_entry
|
|
if base_entry.utility_code:
|
|
entry.utility_code = base_entry.utility_code
|
|
|
|
|
|
class CppClassScope(Scope):
|
|
# Namespace of a C++ class.
|
|
|
|
is_cpp_class_scope = 1
|
|
|
|
default_constructor = None
|
|
type = None
|
|
|
|
def __init__(self, name, outer_scope, templates=None):
|
|
Scope.__init__(self, name, outer_scope, None)
|
|
self.directives = outer_scope.directives
|
|
self.inherited_var_entries = []
|
|
if templates is not None:
|
|
for T in templates:
|
|
template_entry = self.declare(
|
|
T, T, PyrexTypes.TemplatePlaceholderType(T), None, 'extern')
|
|
template_entry.is_type = 1
|
|
|
|
def declare_var(self, name, type, pos,
|
|
cname = None, visibility = 'extern',
|
|
api = 0, in_pxd = 0, is_cdef = 0, defining = 0):
|
|
# Add an entry for an attribute.
|
|
if not cname:
|
|
cname = name
|
|
entry = self.lookup_here(name)
|
|
if defining and entry is not None:
|
|
if entry.type.same_as(type):
|
|
# Fix with_gil vs nogil.
|
|
entry.type = entry.type.with_with_gil(type.with_gil)
|
|
elif type.is_cfunction and type.compatible_signature_with(entry.type):
|
|
entry.type = type
|
|
else:
|
|
error(pos, "Function signature does not match previous declaration")
|
|
else:
|
|
entry = self.declare(name, cname, type, pos, visibility)
|
|
entry.is_variable = 1
|
|
if type.is_cfunction and self.type:
|
|
if not self.type.get_fused_types():
|
|
entry.func_cname = "%s::%s" % (self.type.empty_declaration_code(), cname)
|
|
if name != "this" and (defining or name != "<init>"):
|
|
self.var_entries.append(entry)
|
|
return entry
|
|
|
|
def declare_cfunction(self, name, type, pos,
|
|
cname=None, visibility='extern', api=0, in_pxd=0,
|
|
defining=0, modifiers=(), utility_code=None, overridable=False):
|
|
class_name = self.name.split('::')[-1]
|
|
if name in (class_name, '__init__') and cname is None:
|
|
cname = "%s__init__%s" % (Naming.func_prefix, class_name)
|
|
name = '<init>'
|
|
type.return_type = PyrexTypes.CVoidType()
|
|
# This is called by the actual constructor, but need to support
|
|
# arguments that cannot by called by value.
|
|
type.original_args = type.args
|
|
def maybe_ref(arg):
|
|
if arg.type.is_cpp_class and not arg.type.is_reference:
|
|
return PyrexTypes.CFuncTypeArg(
|
|
arg.name, PyrexTypes.c_ref_type(arg.type), arg.pos)
|
|
else:
|
|
return arg
|
|
type.args = [maybe_ref(arg) for arg in type.args]
|
|
elif name == '__dealloc__' and cname is None:
|
|
cname = "%s__dealloc__%s" % (Naming.func_prefix, class_name)
|
|
name = '<del>'
|
|
type.return_type = PyrexTypes.CVoidType()
|
|
if name in ('<init>', '<del>') and type.nogil:
|
|
for base in self.type.base_classes:
|
|
base_entry = base.scope.lookup(name)
|
|
if base_entry and not base_entry.type.nogil:
|
|
error(pos, "Constructor cannot be called without GIL unless all base constructors can also be called without GIL")
|
|
error(base_entry.pos, "Base constructor defined here.")
|
|
prev_entry = self.lookup_here(name)
|
|
entry = self.declare_var(name, type, pos,
|
|
defining=defining,
|
|
cname=cname, visibility=visibility)
|
|
if prev_entry and not defining:
|
|
entry.overloaded_alternatives = prev_entry.all_alternatives()
|
|
entry.utility_code = utility_code
|
|
type.entry = entry
|
|
return entry
|
|
|
|
def declare_inherited_cpp_attributes(self, base_class):
|
|
base_scope = base_class.scope
|
|
template_type = base_class
|
|
while getattr(template_type, 'template_type', None):
|
|
template_type = template_type.template_type
|
|
if getattr(template_type, 'templates', None):
|
|
base_templates = [T.name for T in template_type.templates]
|
|
else:
|
|
base_templates = ()
|
|
# Declare entries for all the C++ attributes of an
|
|
# inherited type, with cnames modified appropriately
|
|
# to work with this type.
|
|
for base_entry in \
|
|
base_scope.inherited_var_entries + base_scope.var_entries:
|
|
#constructor/destructor is not inherited
|
|
if base_entry.name in ("<init>", "<del>"):
|
|
continue
|
|
#print base_entry.name, self.entries
|
|
if base_entry.name in self.entries:
|
|
base_entry.name # FIXME: is there anything to do in this case?
|
|
entry = self.declare(base_entry.name, base_entry.cname,
|
|
base_entry.type, None, 'extern')
|
|
entry.is_variable = 1
|
|
entry.is_inherited = 1
|
|
self.inherited_var_entries.append(entry)
|
|
for base_entry in base_scope.cfunc_entries:
|
|
entry = self.declare_cfunction(base_entry.name, base_entry.type,
|
|
base_entry.pos, base_entry.cname,
|
|
base_entry.visibility, api=0,
|
|
modifiers=base_entry.func_modifiers,
|
|
utility_code=base_entry.utility_code)
|
|
entry.is_inherited = 1
|
|
for base_entry in base_scope.type_entries:
|
|
if base_entry.name not in base_templates:
|
|
entry = self.declare_type(base_entry.name, base_entry.type,
|
|
base_entry.pos, base_entry.cname,
|
|
base_entry.visibility)
|
|
entry.is_inherited = 1
|
|
|
|
def specialize(self, values, type_entry):
|
|
scope = CppClassScope(self.name, self.outer_scope)
|
|
scope.type = type_entry
|
|
for entry in self.entries.values():
|
|
if entry.is_type:
|
|
scope.declare_type(entry.name,
|
|
entry.type.specialize(values),
|
|
entry.pos,
|
|
entry.cname,
|
|
template=1)
|
|
elif entry.type.is_cfunction:
|
|
for e in entry.all_alternatives():
|
|
scope.declare_cfunction(e.name,
|
|
e.type.specialize(values),
|
|
e.pos,
|
|
e.cname,
|
|
utility_code=e.utility_code)
|
|
else:
|
|
scope.declare_var(entry.name,
|
|
entry.type.specialize(values),
|
|
entry.pos,
|
|
entry.cname,
|
|
entry.visibility)
|
|
|
|
return scope
|
|
|
|
|
|
class PropertyScope(Scope):
|
|
# Scope holding the __get__, __set__ and __del__ methods for
|
|
# a property of an extension type.
|
|
#
|
|
# parent_type PyExtensionType The type to which the property belongs
|
|
|
|
is_property_scope = 1
|
|
|
|
def declare_pyfunction(self, name, pos, allow_redefine=False):
|
|
# Add an entry for a method.
|
|
signature = get_property_accessor_signature(name)
|
|
if signature:
|
|
entry = self.declare(name, name, py_object_type, pos, 'private')
|
|
entry.is_special = 1
|
|
entry.signature = signature
|
|
return entry
|
|
else:
|
|
error(pos, "Only __get__, __set__ and __del__ methods allowed "
|
|
"in a property declaration")
|
|
return None
|
|
|
|
|
|
class CConstScope(Scope):
|
|
|
|
def __init__(self, const_base_type_scope):
|
|
Scope.__init__(
|
|
self,
|
|
'const_' + const_base_type_scope.name,
|
|
const_base_type_scope.outer_scope,
|
|
const_base_type_scope.parent_scope)
|
|
self.const_base_type_scope = const_base_type_scope
|
|
|
|
def lookup_here(self, name):
|
|
entry = self.const_base_type_scope.lookup_here(name)
|
|
if entry is not None:
|
|
entry = copy.copy(entry)
|
|
entry.type = PyrexTypes.c_const_type(entry.type)
|
|
return entry
|
|
|
|
class TemplateScope(Scope):
|
|
def __init__(self, name, outer_scope):
|
|
Scope.__init__(self, name, outer_scope, None)
|
|
self.directives = outer_scope.directives
|