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Builtin.py
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Builtin.py
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#
# Pyrex - Builtin Definitions
#
from Symtab import BuiltinScope, StructOrUnionScope
from Code import UtilityCode
from TypeSlots import Signature
import PyrexTypes
import Naming
# C-level implementations of builtin types, functions and methods
pow2_utility_code = UtilityCode(
proto = """
#define __Pyx_PyNumber_Power2(a, b) PyNumber_Power(a, b, Py_None)
""")
include_string_h_utility_code = UtilityCode(
proto = """
#include <string.h>
"""
)
iter_next_utility_code = UtilityCode(
proto = """
#define __Pyx_PyIter_Next(obj) __Pyx_PyIter_Next2(obj, NULL);
static CYTHON_INLINE PyObject *__Pyx_PyIter_Next2(PyObject *, PyObject *); /*proto*/
""",
# copied from Py3's builtin_next()
impl = '''
static CYTHON_INLINE PyObject *__Pyx_PyIter_Next2(PyObject* iterator, PyObject* defval) {
PyObject* next;
if (unlikely(!PyIter_Check(iterator))) {
PyErr_Format(PyExc_TypeError,
"%.200s object is not an iterator", iterator->ob_type->tp_name);
return NULL;
}
next = (*(Py_TYPE(iterator)->tp_iternext))(iterator);
if (likely(next)) {
return next;
} else if (defval) {
if (PyErr_Occurred()) {
if(!PyErr_ExceptionMatches(PyExc_StopIteration))
return NULL;
PyErr_Clear();
}
Py_INCREF(defval);
return defval;
} else if (PyErr_Occurred()) {
return NULL;
} else {
PyErr_SetNone(PyExc_StopIteration);
return NULL;
}
}
''')
getattr3_utility_code = UtilityCode(
proto = """
static CYTHON_INLINE PyObject *__Pyx_GetAttr3(PyObject *, PyObject *, PyObject *); /*proto*/
""",
impl = """
static CYTHON_INLINE PyObject *__Pyx_GetAttr3(PyObject *o, PyObject *n, PyObject *d) {
PyObject *r = PyObject_GetAttr(o, n);
if (!r) {
if (!PyErr_ExceptionMatches(PyExc_AttributeError))
goto bad;
PyErr_Clear();
r = d;
Py_INCREF(d);
}
return r;
bad:
return NULL;
}
""")
pyexec_utility_code = UtilityCode(
proto = """
#if PY_VERSION_HEX < 0x02040000
#ifndef Py_COMPILE_H
#include "compile.h"
#endif
#ifndef Py_EVAL_H
#include "eval.h"
#endif
#endif
static PyObject* __Pyx_PyRun(PyObject*, PyObject*, PyObject*);
static CYTHON_INLINE PyObject* __Pyx_PyRun2(PyObject*, PyObject*);
""",
impl = """
static CYTHON_INLINE PyObject* __Pyx_PyRun2(PyObject* o, PyObject* globals) {
return __Pyx_PyRun(o, globals, NULL);
}
static PyObject* __Pyx_PyRun(PyObject* o, PyObject* globals, PyObject* locals) {
PyObject* result;
PyObject* s = 0;
char *code = 0;
if (!globals || globals == Py_None) {
globals = PyModule_GetDict(%s);""" % Naming.module_cname + """
if (!globals)
goto bad;
} else if (!PyDict_Check(globals)) {
PyErr_Format(PyExc_TypeError, "exec() arg 2 must be a dict, not %.100s",
globals->ob_type->tp_name);
goto bad;
}
if (!locals || locals == Py_None) {
locals = globals;
}
if (PyDict_GetItemString(globals, "__builtins__") == NULL) {
PyDict_SetItemString(globals, "__builtins__", PyEval_GetBuiltins());
}
if (PyCode_Check(o)) {
if (PyCode_GetNumFree((PyCodeObject *)o) > 0) {
PyErr_SetString(PyExc_TypeError,
"code object passed to exec() may not contain free variables");
goto bad;
}
#if PY_VERSION_HEX < 0x030200B1
result = PyEval_EvalCode((PyCodeObject *)o, globals, locals);
#else
result = PyEval_EvalCode(o, globals, locals);
#endif
} else {
PyCompilerFlags cf;
cf.cf_flags = 0;
if (PyUnicode_Check(o)) {
cf.cf_flags = PyCF_SOURCE_IS_UTF8;
s = PyUnicode_AsUTF8String(o);
if (!s) goto bad;
o = s;
#if PY_MAJOR_VERSION >= 3
} else if (!PyBytes_Check(o)) {
#else
} else if (!PyString_Check(o)) {
#endif
PyErr_SetString(PyExc_TypeError,
"exec: arg 1 must be string, bytes or code object");
goto bad;
}
#if PY_MAJOR_VERSION >= 3
code = PyBytes_AS_STRING(o);
#else
code = PyString_AS_STRING(o);
#endif
if (PyEval_MergeCompilerFlags(&cf)) {
result = PyRun_StringFlags(code, Py_file_input, globals, locals, &cf);
} else {
result = PyRun_String(code, Py_file_input, globals, locals);
}
Py_XDECREF(s);
}
return result;
bad:
Py_XDECREF(s);
return 0;
}
""")
intern_utility_code = UtilityCode(
proto = """
static PyObject* __Pyx_Intern(PyObject* s); /* proto */
""",
impl = '''
static PyObject* __Pyx_Intern(PyObject* s) {
if (!(likely(PyString_CheckExact(s)))) {
PyErr_Format(PyExc_TypeError, "Expected str, got %s", Py_TYPE(s)->tp_name);
return 0;
}
Py_INCREF(s);
#if PY_MAJOR_VERSION >= 3
PyUnicode_InternInPlace(&s);
#else
PyString_InternInPlace(&s);
#endif
return s;
}
''')
def put_py23_set_init_utility_code(code, pos):
code.putln("#if PY_VERSION_HEX < 0x02040000")
code.putln(code.error_goto_if_neg("__Pyx_Py23SetsImport()", pos))
code.putln("#endif")
py23_set_utility_code = UtilityCode(
proto = """
#if PY_VERSION_HEX < 0x02050000
#ifndef PyAnySet_CheckExact
#define PyAnySet_CheckExact(ob) \\
((ob)->ob_type == &PySet_Type || \\
(ob)->ob_type == &PyFrozenSet_Type)
#define PySet_New(iterable) \\
PyObject_CallFunctionObjArgs((PyObject *)&PySet_Type, (iterable), NULL)
#define Pyx_PyFrozenSet_New(iterable) \\
PyObject_CallFunctionObjArgs((PyObject *)&PyFrozenSet_Type, (iterable), NULL)
#define PySet_Size(anyset) \\
PyObject_Size((anyset))
#define PySet_Contains(anyset, key) \\
PySequence_Contains((anyset), (key))
#define PySet_Pop(set) \\
PyObject_CallMethod(set, (char *)"pop", NULL)
static CYTHON_INLINE int PySet_Clear(PyObject *set) {
PyObject *ret = PyObject_CallMethod(set, (char *)"clear", NULL);
if (!ret) return -1;
Py_DECREF(ret); return 0;
}
static CYTHON_INLINE int PySet_Discard(PyObject *set, PyObject *key) {
PyObject *ret = PyObject_CallMethod(set, (char *)"discard", (char *)"O", key);
if (!ret) return -1;
Py_DECREF(ret); return 0;
}
static CYTHON_INLINE int PySet_Add(PyObject *set, PyObject *key) {
PyObject *ret = PyObject_CallMethod(set, (char *)"add", (char *)"O", key);
if (!ret) return -1;
Py_DECREF(ret); return 0;
}
#endif /* PyAnySet_CheckExact (<= Py2.4) */
#if PY_VERSION_HEX < 0x02040000
#ifndef Py_SETOBJECT_H
#define Py_SETOBJECT_H
static PyTypeObject *__Pyx_PySet_Type = NULL;
static PyTypeObject *__Pyx_PyFrozenSet_Type = NULL;
#define PySet_Type (*__Pyx_PySet_Type)
#define PyFrozenSet_Type (*__Pyx_PyFrozenSet_Type)
#define PyAnySet_Check(ob) \\
(PyAnySet_CheckExact(ob) || \\
PyType_IsSubtype((ob)->ob_type, &PySet_Type) || \\
PyType_IsSubtype((ob)->ob_type, &PyFrozenSet_Type))
#define PyFrozenSet_CheckExact(ob) ((ob)->ob_type == &PyFrozenSet_Type)
static int __Pyx_Py23SetsImport(void) {
PyObject *sets=0, *Set=0, *ImmutableSet=0;
sets = PyImport_ImportModule((char *)"sets");
if (!sets) goto bad;
Set = PyObject_GetAttrString(sets, (char *)"Set");
if (!Set) goto bad;
ImmutableSet = PyObject_GetAttrString(sets, (char *)"ImmutableSet");
if (!ImmutableSet) goto bad;
Py_DECREF(sets);
__Pyx_PySet_Type = (PyTypeObject*) Set;
__Pyx_PyFrozenSet_Type = (PyTypeObject*) ImmutableSet;
return 0;
bad:
Py_XDECREF(sets);
Py_XDECREF(Set);
Py_XDECREF(ImmutableSet);
return -1;
}
#else
static int __Pyx_Py23SetsImport(void) { return 0; }
#endif /* !Py_SETOBJECT_H */
#endif /* < Py2.4 */
#endif /* < Py2.5 */
""",
init = put_py23_set_init_utility_code,
cleanup = """
#if PY_VERSION_HEX < 0x02040000
Py_XDECREF(__Pyx_PySet_Type); __Pyx_PySet_Type = NULL;
Py_XDECREF(__Pyx_PyFrozenSet_Type); __Pyx_PyFrozenSet_Type = NULL;
#endif /* < Py2.4 */
""")
builtin_utility_code = {
'set' : py23_set_utility_code,
'frozenset' : py23_set_utility_code,
}
# mapping from builtins to their C-level equivalents
class _BuiltinOverride(object):
def __init__(self, py_name, args, ret_type, cname, py_equiv = "*",
utility_code = None, sig = None, func_type = None):
self.py_name, self.cname, self.py_equiv = py_name, cname, py_equiv
self.args, self.ret_type = args, ret_type
self.func_type, self.sig = func_type, sig
self.utility_code = utility_code
class BuiltinAttribute(object):
def __init__(self, py_name, cname=None, field_type=None, field_type_name=None):
self.py_name = py_name
self.cname = cname or py_name
self.field_type_name = field_type_name # can't do the lookup before the type is declared!
self.field_type = field_type
def declare_in_type(self, self_type):
if self.field_type_name is not None:
# lazy type lookup
field_type = builtin_scope.lookup(self.field_type_name).type
else:
field_type = self.field_type or PyrexTypes.py_object_type
entry = self_type.scope.declare(self.py_name, self.cname, field_type, None, 'private')
entry.is_variable = True
class BuiltinFunction(_BuiltinOverride):
def declare_in_scope(self, scope):
func_type, sig = self.func_type, self.sig
if func_type is None:
if sig is None:
sig = Signature(self.args, self.ret_type)
func_type = sig.function_type()
scope.declare_builtin_cfunction(self.py_name, func_type, self.cname,
self.py_equiv, self.utility_code)
class BuiltinMethod(_BuiltinOverride):
def declare_in_type(self, self_type):
method_type, sig = self.func_type, self.sig
if method_type is None:
if sig is None:
sig = Signature(self.args, self.ret_type)
# override 'self' type (first argument)
self_arg = PyrexTypes.CFuncTypeArg("", self_type, None)
self_arg.not_none = True
method_type = sig.function_type(self_arg)
self_type.scope.declare_builtin_cfunction(
self.py_name, method_type, self.cname, utility_code = self.utility_code)
builtin_function_table = [
# name, args, return, C API func, py equiv = "*"
BuiltinFunction('abs', "O", "O", "PyNumber_Absolute"),
#('chr', "", "", ""),
#('cmp', "", "", "", ""), # int PyObject_Cmp(PyObject *o1, PyObject *o2, int *result)
#('compile', "", "", ""), # PyObject* Py_CompileString( char *str, char *filename, int start)
BuiltinFunction('delattr', "OO", "r", "PyObject_DelAttr"),
BuiltinFunction('dir', "O", "O", "PyObject_Dir"),
BuiltinFunction('divmod', "OO", "O", "PyNumber_Divmod"),
BuiltinFunction('exec', "OOO", "O", "__Pyx_PyRun",
utility_code = pyexec_utility_code),
BuiltinFunction('exec', "OO", "O", "__Pyx_PyRun2",
utility_code = pyexec_utility_code),
#('eval', "", "", ""),
#('execfile', "", "", ""),
#('filter', "", "", ""),
BuiltinFunction('getattr', "OO", "O", "PyObject_GetAttr"),
BuiltinFunction('getattr', "OOO", "O", "__Pyx_GetAttr3",
utility_code = getattr3_utility_code),
BuiltinFunction('getattr3', "OOO", "O", "__Pyx_GetAttr3", "getattr",
utility_code = getattr3_utility_code), # Pyrex compatibility
BuiltinFunction('hasattr', "OO", "b", "PyObject_HasAttr"),
BuiltinFunction('hash', "O", "l", "PyObject_Hash"),
#('hex', "", "", ""),
#('id', "", "", ""),
#('input', "", "", ""),
BuiltinFunction('intern', "O", "O", "__Pyx_Intern",
utility_code = intern_utility_code),
BuiltinFunction('isinstance', "OO", "b", "PyObject_IsInstance"),
BuiltinFunction('issubclass', "OO", "b", "PyObject_IsSubclass"),
BuiltinFunction('iter', "OO", "O", "PyCallIter_New"),
BuiltinFunction('iter', "O", "O", "PyObject_GetIter"),
BuiltinFunction('len', "O", "z", "PyObject_Length"),
BuiltinFunction('locals', "", "O", "__pyx_locals"),
#('map', "", "", ""),
#('max', "", "", ""),
#('min', "", "", ""),
BuiltinFunction('next', "O", "O", "__Pyx_PyIter_Next",
utility_code = iter_next_utility_code), # not available in Py2 => implemented here
BuiltinFunction('next', "OO", "O", "__Pyx_PyIter_Next2",
utility_code = iter_next_utility_code), # not available in Py2 => implemented here
#('oct', "", "", ""),
#('open', "ss", "O", "PyFile_FromString"), # not in Py3
#('ord', "", "", ""),
BuiltinFunction('pow', "OOO", "O", "PyNumber_Power"),
BuiltinFunction('pow', "OO", "O", "__Pyx_PyNumber_Power2",
utility_code = pow2_utility_code),
#('range', "", "", ""),
#('raw_input', "", "", ""),
#('reduce', "", "", ""),
BuiltinFunction('reload', "O", "O", "PyImport_ReloadModule"),
BuiltinFunction('repr', "O", "O", "PyObject_Repr"),
#('round', "", "", ""),
BuiltinFunction('setattr', "OOO", "r", "PyObject_SetAttr"),
#('sum', "", "", ""),
#('type', "O", "O", "PyObject_Type"),
#('unichr', "", "", ""),
#('unicode', "", "", ""),
#('vars', "", "", ""),
#('zip', "", "", ""),
# Can't do these easily until we have builtin type entries.
#('typecheck', "OO", "i", "PyObject_TypeCheck", False),
#('issubtype', "OO", "i", "PyType_IsSubtype", False),
# Put in namespace append optimization.
BuiltinFunction('__Pyx_PyObject_Append', "OO", "O", "__Pyx_PyObject_Append"),
]
# Builtin types
# bool
# buffer
# classmethod
# dict
# enumerate
# file
# float
# int
# list
# long
# object
# property
# slice
# staticmethod
# super
# str
# tuple
# type
# xrange
builtin_types_table = [
("type", "PyType_Type", []),
# This conflicts with the C++ bool type, and unfortunately
# C++ is too liberal about PyObject* <-> bool conversions,
# resulting in unintuitive runtime behavior and segfaults.
# ("bool", "PyBool_Type", []),
("int", "PyInt_Type", []),
("long", "PyLong_Type", []),
("float", "PyFloat_Type", []),
("complex", "PyComplex_Type", [BuiltinAttribute('cval', field_type_name = 'Py_complex'),
BuiltinAttribute('real', 'cval.real', field_type = PyrexTypes.c_double_type),
BuiltinAttribute('imag', 'cval.imag', field_type = PyrexTypes.c_double_type),
]),
("bytes", "PyBytes_Type", []),
("str", "PyString_Type", []),
("unicode", "PyUnicode_Type", [BuiltinMethod("join", "TO", "T", "PyUnicode_Join"),
]),
("tuple", "PyTuple_Type", []),
("list", "PyList_Type", [BuiltinMethod("insert", "TzO", "i", "PyList_Insert"),
BuiltinMethod("reverse", "T", "i", "PyList_Reverse"),
BuiltinMethod("append", "TO", "i", "PyList_Append"),
]),
("dict", "PyDict_Type", [BuiltinMethod("items", "T", "O", "PyDict_Items"), # FIXME: Py3 mode?
BuiltinMethod("keys", "T", "O", "PyDict_Keys"), # FIXME: Py3 mode?
BuiltinMethod("values","T", "O", "PyDict_Values"), # FIXME: Py3 mode?
BuiltinMethod("copy", "T", "T", "PyDict_Copy")]),
("slice", "PySlice_Type", [BuiltinAttribute('start'),
BuiltinAttribute('stop'),
BuiltinAttribute('step'),
]),
# ("file", "PyFile_Type", []), # not in Py3
("set", "PySet_Type", [BuiltinMethod("clear", "T", "i", "PySet_Clear"),
BuiltinMethod("discard", "TO", "i", "PySet_Discard"),
BuiltinMethod("add", "TO", "i", "PySet_Add"),
BuiltinMethod("pop", "T", "O", "PySet_Pop")]),
("frozenset", "PyFrozenSet_Type", []),
]
types_that_construct_their_instance = (
# some builtin types do not always return an instance of
# themselves - these do:
'type', 'bool', 'long', 'float', 'bytes', 'unicode', 'tuple', 'list',
'dict', 'set', 'frozenset'
# 'str', # only in Py3.x
# 'file', # only in Py2.x
)
builtin_structs_table = [
('Py_buffer', 'Py_buffer',
[("buf", PyrexTypes.c_void_ptr_type),
("obj", PyrexTypes.py_object_type),
("len", PyrexTypes.c_py_ssize_t_type),
("itemsize", PyrexTypes.c_py_ssize_t_type),
("readonly", PyrexTypes.c_bint_type),
("ndim", PyrexTypes.c_int_type),
("format", PyrexTypes.c_char_ptr_type),
("shape", PyrexTypes.c_py_ssize_t_ptr_type),
("strides", PyrexTypes.c_py_ssize_t_ptr_type),
("suboffsets", PyrexTypes.c_py_ssize_t_ptr_type),
("internal", PyrexTypes.c_void_ptr_type),
]),
('Py_complex', 'Py_complex',
[('real', PyrexTypes.c_double_type),
('imag', PyrexTypes.c_double_type),
])
]
# set up builtin scope
builtin_scope = BuiltinScope()
def init_builtin_funcs():
for bf in builtin_function_table:
bf.declare_in_scope(builtin_scope)
builtin_types = {}
def init_builtin_types():
global builtin_types
for name, cname, methods in builtin_types_table:
utility = builtin_utility_code.get(name)
if name == 'frozenset':
objstruct_cname = 'PySetObject'
elif name == 'bool':
objstruct_cname = None
else:
objstruct_cname = 'Py%sObject' % name.capitalize()
the_type = builtin_scope.declare_builtin_type(name, cname, utility, objstruct_cname)
builtin_types[name] = the_type
for method in methods:
method.declare_in_type(the_type)
def init_builtin_structs():
for name, cname, attribute_types in builtin_structs_table:
scope = StructOrUnionScope(name)
for attribute_name, attribute_type in attribute_types:
scope.declare_var(attribute_name, attribute_type, None,
attribute_name, allow_pyobject=True)
builtin_scope.declare_struct_or_union(
name, "struct", scope, 1, None, cname = cname)
def init_builtins():
init_builtin_structs()
init_builtin_funcs()
init_builtin_types()
global list_type, tuple_type, dict_type, set_type, frozenset_type
global bytes_type, str_type, unicode_type
global float_type, bool_type, type_type, complex_type
type_type = builtin_scope.lookup('type').type
list_type = builtin_scope.lookup('list').type
tuple_type = builtin_scope.lookup('tuple').type
dict_type = builtin_scope.lookup('dict').type
set_type = builtin_scope.lookup('set').type
frozenset_type = builtin_scope.lookup('frozenset').type
bytes_type = builtin_scope.lookup('bytes').type
str_type = builtin_scope.lookup('str').type
unicode_type = builtin_scope.lookup('unicode').type
float_type = builtin_scope.lookup('float').type
bool_type = builtin_scope.lookup('bool').type
complex_type = builtin_scope.lookup('complex').type
init_builtins()