| /* Built-in functions */ |
| |
| #include "Python.h" |
| |
| #include "node.h" |
| #include "code.h" |
| #include "eval.h" |
| |
| #include <ctype.h> |
| |
| /* The default encoding used by the platform file system APIs |
| Can remain NULL for all platforms that don't have such a concept |
| */ |
| #if defined(MS_WINDOWS) && defined(HAVE_USABLE_WCHAR_T) |
| const char *Py_FileSystemDefaultEncoding = "mbcs"; |
| #elif defined(__APPLE__) |
| const char *Py_FileSystemDefaultEncoding = "utf-8"; |
| #else |
| const char *Py_FileSystemDefaultEncoding = NULL; /* use default */ |
| #endif |
| |
| static PyObject * |
| builtin___build_class__(PyObject *self, PyObject *args, PyObject *kwds) |
| { |
| PyObject *func, *name, *bases, *mkw, *meta, *prep, *ns, *cell; |
| PyObject *cls = NULL; |
| Py_ssize_t nargs, nbases; |
| |
| assert(args != NULL); |
| if (!PyTuple_Check(args)) { |
| PyErr_SetString(PyExc_TypeError, |
| "__build_class__: args is not a tuple"); |
| return NULL; |
| } |
| nargs = PyTuple_GET_SIZE(args); |
| if (nargs < 2) { |
| PyErr_SetString(PyExc_TypeError, |
| "__build_class__: not enough arguments"); |
| return NULL; |
| } |
| func = PyTuple_GET_ITEM(args, 0); /* Better be callable */ |
| name = PyTuple_GET_ITEM(args, 1); |
| if ((!PyString_Check(name) && !PyUnicode_Check(name))) { |
| PyErr_SetString(PyExc_TypeError, |
| "__build_class__: name is not a string"); |
| return NULL; |
| } |
| bases = PyTuple_GetSlice(args, 2, nargs); |
| if (bases == NULL) |
| return NULL; |
| nbases = nargs - 2; |
| |
| if (kwds == NULL) { |
| meta = NULL; |
| mkw = NULL; |
| } |
| else { |
| mkw = PyDict_Copy(kwds); /* Don't modify kwds passed in! */ |
| if (mkw == NULL) { |
| Py_DECREF(bases); |
| return NULL; |
| } |
| meta = PyDict_GetItemString(mkw, "metaclass"); |
| if (meta != NULL) { |
| Py_INCREF(meta); |
| if (PyDict_DelItemString(mkw, "metaclass") < 0) { |
| Py_DECREF(meta); |
| Py_DECREF(mkw); |
| Py_DECREF(bases); |
| return NULL; |
| } |
| } |
| } |
| if (meta == NULL) { |
| if (PyTuple_GET_SIZE(bases) == 0) |
| meta = (PyObject *) (&PyType_Type); |
| else { |
| PyObject *base0 = PyTuple_GET_ITEM(bases, 0); |
| meta = (PyObject *) (base0->ob_type); |
| } |
| Py_INCREF(meta); |
| } |
| prep = PyObject_GetAttrString(meta, "__prepare__"); |
| if (prep == NULL) { |
| PyErr_Clear(); |
| ns = PyDict_New(); |
| } |
| else { |
| PyObject *pargs = Py_BuildValue("OO", name, bases); |
| if (pargs == NULL) { |
| Py_DECREF(prep); |
| Py_DECREF(meta); |
| Py_XDECREF(mkw); |
| Py_DECREF(bases); |
| return NULL; |
| } |
| ns = PyEval_CallObjectWithKeywords(prep, pargs, mkw); |
| Py_DECREF(pargs); |
| Py_DECREF(prep); |
| if (ns == NULL) { |
| Py_DECREF(meta); |
| Py_XDECREF(mkw); |
| Py_DECREF(bases); |
| return NULL; |
| } |
| } |
| cell = PyObject_CallFunctionObjArgs(func, ns, NULL); |
| if (cell != NULL) { |
| PyObject *margs; |
| margs = Py_BuildValue("OOO", name, bases, ns); |
| if (margs != NULL) { |
| cls = PyEval_CallObjectWithKeywords(meta, margs, mkw); |
| Py_DECREF(margs); |
| } |
| if (cls != NULL && PyCell_Check(cell)) { |
| Py_INCREF(cls); |
| PyCell_SET(cell, cls); |
| } |
| Py_DECREF(cell); |
| } |
| Py_DECREF(ns); |
| Py_DECREF(meta); |
| Py_XDECREF(mkw); |
| Py_DECREF(bases); |
| return cls; |
| } |
| |
| PyDoc_STRVAR(build_class_doc, |
| "__build_class__(func, name, *bases, metaclass=None, **kwds) -> class\n\ |
| \n\ |
| Internal helper function used by the class statement."); |
| |
| static PyObject * |
| builtin___import__(PyObject *self, PyObject *args, PyObject *kwds) |
| { |
| static char *kwlist[] = {"name", "globals", "locals", "fromlist", |
| "level", 0}; |
| char *name; |
| PyObject *globals = NULL; |
| PyObject *locals = NULL; |
| PyObject *fromlist = NULL; |
| int level = -1; |
| |
| if (!PyArg_ParseTupleAndKeywords(args, kwds, "s|OOOi:__import__", |
| kwlist, &name, &globals, &locals, &fromlist, &level)) |
| return NULL; |
| return PyImport_ImportModuleLevel(name, globals, locals, |
| fromlist, level); |
| } |
| |
| PyDoc_STRVAR(import_doc, |
| "__import__(name, globals={}, locals={}, fromlist=[], level=-1) -> module\n\ |
| \n\ |
| Import a module. The globals are only used to determine the context;\n\ |
| they are not modified. The locals are currently unused. The fromlist\n\ |
| should be a list of names to emulate ``from name import ...'', or an\n\ |
| empty list to emulate ``import name''.\n\ |
| When importing a module from a package, note that __import__('A.B', ...)\n\ |
| returns package A when fromlist is empty, but its submodule B when\n\ |
| fromlist is not empty. Level is used to determine whether to perform \n\ |
| absolute or relative imports. -1 is the original strategy of attempting\n\ |
| both absolute and relative imports, 0 is absolute, a positive number\n\ |
| is the number of parent directories to search relative to the current module."); |
| |
| |
| static PyObject * |
| builtin_abs(PyObject *self, PyObject *v) |
| { |
| return PyNumber_Absolute(v); |
| } |
| |
| PyDoc_STRVAR(abs_doc, |
| "abs(number) -> number\n\ |
| \n\ |
| Return the absolute value of the argument."); |
| |
| static PyObject * |
| builtin_all(PyObject *self, PyObject *v) |
| { |
| PyObject *it, *item; |
| |
| it = PyObject_GetIter(v); |
| if (it == NULL) |
| return NULL; |
| |
| while ((item = PyIter_Next(it)) != NULL) { |
| int cmp = PyObject_IsTrue(item); |
| Py_DECREF(item); |
| if (cmp < 0) { |
| Py_DECREF(it); |
| return NULL; |
| } |
| if (cmp == 0) { |
| Py_DECREF(it); |
| Py_RETURN_FALSE; |
| } |
| } |
| Py_DECREF(it); |
| if (PyErr_Occurred()) |
| return NULL; |
| Py_RETURN_TRUE; |
| } |
| |
| PyDoc_STRVAR(all_doc, |
| "all(iterable) -> bool\n\ |
| \n\ |
| Return True if bool(x) is True for all values x in the iterable."); |
| |
| static PyObject * |
| builtin_any(PyObject *self, PyObject *v) |
| { |
| PyObject *it, *item; |
| |
| it = PyObject_GetIter(v); |
| if (it == NULL) |
| return NULL; |
| |
| while ((item = PyIter_Next(it)) != NULL) { |
| int cmp = PyObject_IsTrue(item); |
| Py_DECREF(item); |
| if (cmp < 0) { |
| Py_DECREF(it); |
| return NULL; |
| } |
| if (cmp == 1) { |
| Py_DECREF(it); |
| Py_RETURN_TRUE; |
| } |
| } |
| Py_DECREF(it); |
| if (PyErr_Occurred()) |
| return NULL; |
| Py_RETURN_FALSE; |
| } |
| |
| PyDoc_STRVAR(any_doc, |
| "any(iterable) -> bool\n\ |
| \n\ |
| Return True if bool(x) is True for any x in the iterable."); |
| |
| |
| static PyObject * |
| builtin_bin(PyObject *self, PyObject *v) |
| { |
| return PyNumber_ToBase(v, 2); |
| } |
| |
| PyDoc_STRVAR(bin_doc, |
| "bin(number) -> string\n\ |
| \n\ |
| Return the binary representation of an integer or long integer."); |
| |
| |
| static PyObject * |
| builtin_filter(PyObject *self, PyObject *args) |
| { |
| PyObject *itertools, *ifilter, *result; |
| itertools = PyImport_ImportModule("itertools"); |
| if (itertools == NULL) |
| return NULL; |
| ifilter = PyObject_GetAttrString(itertools, "ifilter"); |
| Py_DECREF(itertools); |
| if (ifilter == NULL) |
| return NULL; |
| result = PyObject_Call(ifilter, args, NULL); |
| Py_DECREF(ifilter); |
| return result; |
| } |
| |
| PyDoc_STRVAR(filter_doc, |
| "filter(predicate, iterable) -> iterator\n\ |
| \n\ |
| Return an iterator yielding only those elements of the input iterable\n\ |
| for which the predicate (a Boolean function) returns true.\n\ |
| If the predicate is None, 'lambda x: bool(x)' is assumed.\n\ |
| (This is identical to itertools.ifilter().)"); |
| |
| |
| static PyObject * |
| builtin_chr8(PyObject *self, PyObject *args) |
| { |
| long x; |
| char s[1]; |
| |
| if (!PyArg_ParseTuple(args, "l:chr8", &x)) |
| return NULL; |
| if (x < 0 || x >= 256) { |
| PyErr_SetString(PyExc_ValueError, |
| "chr8() arg not in range(256)"); |
| return NULL; |
| } |
| s[0] = (char)x; |
| return PyString_FromStringAndSize(s, 1); |
| } |
| |
| PyDoc_STRVAR(chr8_doc, |
| "chr8(i) -> 8-bit character\n\ |
| \n\ |
| Return a string of one character with ordinal i; 0 <= i < 256."); |
| |
| |
| static PyObject * |
| builtin_chr(PyObject *self, PyObject *args) |
| { |
| long x; |
| |
| if (!PyArg_ParseTuple(args, "l:chr", &x)) |
| return NULL; |
| |
| return PyUnicode_FromOrdinal(x); |
| } |
| |
| PyDoc_VAR(chr_doc) = PyDoc_STR( |
| "chr(i) -> Unicode character\n\ |
| \n\ |
| Return a Unicode string of one character with ordinal i; 0 <= i <= 0x10ffff." |
| ) |
| #ifndef Py_UNICODE_WIDE |
| PyDoc_STR( |
| "\nIf 0x10000 <= i, a surrogate pair is returned." |
| ) |
| #endif |
| ; |
| |
| |
| static PyObject * |
| builtin_cmp(PyObject *self, PyObject *args) |
| { |
| PyObject *a, *b; |
| int c; |
| |
| if (!PyArg_UnpackTuple(args, "cmp", 2, 2, &a, &b)) |
| return NULL; |
| if (PyObject_Cmp(a, b, &c) < 0) |
| return NULL; |
| return PyInt_FromLong((long)c); |
| } |
| |
| PyDoc_STRVAR(cmp_doc, |
| "cmp(x, y) -> integer\n\ |
| \n\ |
| Return negative if x<y, zero if x==y, positive if x>y."); |
| |
| |
| static char * |
| source_as_string(PyObject *cmd) |
| { |
| char *str; |
| Py_ssize_t size; |
| |
| if (!PyObject_CheckReadBuffer(cmd) && |
| !PyUnicode_Check(cmd)) { |
| PyErr_SetString(PyExc_TypeError, |
| "eval()/exec() arg 1 must be a string, bytes or code object"); |
| return NULL; |
| } |
| |
| if (PyUnicode_Check(cmd)) { |
| cmd = _PyUnicode_AsDefaultEncodedString(cmd, NULL); |
| if (cmd == NULL) |
| return NULL; |
| } |
| if (PyObject_AsReadBuffer(cmd, (const void **)&str, &size) < 0) { |
| return NULL; |
| } |
| if (strlen(str) != size) { |
| PyErr_SetString(PyExc_TypeError, |
| "source code string cannot contain null bytes"); |
| return NULL; |
| } |
| return str; |
| } |
| |
| static PyObject * |
| builtin_compile(PyObject *self, PyObject *args, PyObject *kwds) |
| { |
| char *str; |
| char *filename; |
| char *startstr; |
| int start; |
| int dont_inherit = 0; |
| int supplied_flags = 0; |
| PyCompilerFlags cf; |
| PyObject *cmd; |
| static char *kwlist[] = {"source", "filename", "mode", "flags", |
| "dont_inherit", NULL}; |
| |
| if (!PyArg_ParseTupleAndKeywords(args, kwds, "Oss|ii:compile", |
| kwlist, &cmd, &filename, &startstr, |
| &supplied_flags, &dont_inherit)) |
| return NULL; |
| |
| cf.cf_flags = supplied_flags | PyCF_SOURCE_IS_UTF8; |
| |
| str = source_as_string(cmd); |
| if (str == NULL) |
| return NULL; |
| |
| if (strcmp(startstr, "exec") == 0) |
| start = Py_file_input; |
| else if (strcmp(startstr, "eval") == 0) |
| start = Py_eval_input; |
| else if (strcmp(startstr, "single") == 0) |
| start = Py_single_input; |
| else { |
| PyErr_SetString(PyExc_ValueError, |
| "compile() arg 3 must be 'exec' or 'eval' or 'single'"); |
| return NULL; |
| } |
| |
| if (supplied_flags & |
| ~(PyCF_MASK | PyCF_MASK_OBSOLETE | PyCF_DONT_IMPLY_DEDENT | PyCF_ONLY_AST)) |
| { |
| PyErr_SetString(PyExc_ValueError, |
| "compile(): unrecognised flags"); |
| return NULL; |
| } |
| /* XXX Warn if (supplied_flags & PyCF_MASK_OBSOLETE) != 0? */ |
| |
| if (!dont_inherit) { |
| PyEval_MergeCompilerFlags(&cf); |
| } |
| return Py_CompileStringFlags(str, filename, start, &cf); |
| } |
| |
| PyDoc_STRVAR(compile_doc, |
| "compile(source, filename, mode[, flags[, dont_inherit]]) -> code object\n\ |
| \n\ |
| Compile the source string (a Python module, statement or expression)\n\ |
| into a code object that can be executed by exec() or eval().\n\ |
| The filename will be used for run-time error messages.\n\ |
| The mode must be 'exec' to compile a module, 'single' to compile a\n\ |
| single (interactive) statement, or 'eval' to compile an expression.\n\ |
| The flags argument, if present, controls which future statements influence\n\ |
| the compilation of the code.\n\ |
| The dont_inherit argument, if non-zero, stops the compilation inheriting\n\ |
| the effects of any future statements in effect in the code calling\n\ |
| compile; if absent or zero these statements do influence the compilation,\n\ |
| in addition to any features explicitly specified."); |
| |
| static PyObject * |
| builtin_dir(PyObject *self, PyObject *args) |
| { |
| PyObject *arg = NULL; |
| |
| if (!PyArg_UnpackTuple(args, "dir", 0, 1, &arg)) |
| return NULL; |
| return PyObject_Dir(arg); |
| } |
| |
| PyDoc_STRVAR(dir_doc, |
| "dir([object]) -> list of strings\n" |
| "\n" |
| "If called without an argument, return the names in the current scope.\n" |
| "Else, return an alphabetized list of names comprising (some of) the attributes\n" |
| "of the given object, and of attributes reachable from it.\n" |
| "If the object supplies a method named __dir__, it will be used; otherwise\n" |
| "the default dir() logic is used and returns:\n" |
| " for a module object: the module's attributes.\n" |
| " for a class object: its attributes, and recursively the attributes\n" |
| " of its bases.\n" |
| " for any other object: its attributes, its class's attributes, and\n" |
| " recursively the attributes of its class's base classes."); |
| |
| static PyObject * |
| builtin_divmod(PyObject *self, PyObject *args) |
| { |
| PyObject *v, *w; |
| |
| if (!PyArg_UnpackTuple(args, "divmod", 2, 2, &v, &w)) |
| return NULL; |
| return PyNumber_Divmod(v, w); |
| } |
| |
| PyDoc_STRVAR(divmod_doc, |
| "divmod(x, y) -> (div, mod)\n\ |
| \n\ |
| Return the tuple ((x-x%y)/y, x%y). Invariant: div*y + mod == x."); |
| |
| |
| static PyObject * |
| builtin_eval(PyObject *self, PyObject *args) |
| { |
| PyObject *cmd, *result, *tmp = NULL; |
| PyObject *globals = Py_None, *locals = Py_None; |
| char *str; |
| PyCompilerFlags cf; |
| |
| if (!PyArg_UnpackTuple(args, "eval", 1, 3, &cmd, &globals, &locals)) |
| return NULL; |
| if (locals != Py_None && !PyMapping_Check(locals)) { |
| PyErr_SetString(PyExc_TypeError, "locals must be a mapping"); |
| return NULL; |
| } |
| if (globals != Py_None && !PyDict_Check(globals)) { |
| PyErr_SetString(PyExc_TypeError, PyMapping_Check(globals) ? |
| "globals must be a real dict; try eval(expr, {}, mapping)" |
| : "globals must be a dict"); |
| return NULL; |
| } |
| if (globals == Py_None) { |
| globals = PyEval_GetGlobals(); |
| if (locals == Py_None) |
| locals = PyEval_GetLocals(); |
| } |
| else if (locals == Py_None) |
| locals = globals; |
| |
| if (globals == NULL || locals == NULL) { |
| PyErr_SetString(PyExc_TypeError, |
| "eval must be given globals and locals " |
| "when called without a frame"); |
| return NULL; |
| } |
| |
| if (PyDict_GetItemString(globals, "__builtins__") == NULL) { |
| if (PyDict_SetItemString(globals, "__builtins__", |
| PyEval_GetBuiltins()) != 0) |
| return NULL; |
| } |
| |
| if (PyCode_Check(cmd)) { |
| if (PyCode_GetNumFree((PyCodeObject *)cmd) > 0) { |
| PyErr_SetString(PyExc_TypeError, |
| "code object passed to eval() may not contain free variables"); |
| return NULL; |
| } |
| return PyEval_EvalCode((PyCodeObject *) cmd, globals, locals); |
| } |
| |
| str = source_as_string(cmd); |
| if (str == NULL) |
| return NULL; |
| |
| while (*str == ' ' || *str == '\t') |
| str++; |
| |
| cf.cf_flags = PyCF_SOURCE_IS_UTF8; |
| (void)PyEval_MergeCompilerFlags(&cf); |
| result = PyRun_StringFlags(str, Py_eval_input, globals, locals, &cf); |
| Py_XDECREF(tmp); |
| return result; |
| } |
| |
| PyDoc_STRVAR(eval_doc, |
| "eval(source[, globals[, locals]]) -> value\n\ |
| \n\ |
| Evaluate the source in the context of globals and locals.\n\ |
| The source may be a string representing a Python expression\n\ |
| or a code object as returned by compile().\n\ |
| The globals must be a dictionary and locals can be any mapping,\n\ |
| defaulting to the current globals and locals.\n\ |
| If only globals is given, locals defaults to it.\n"); |
| |
| static PyObject * |
| builtin_exec(PyObject *self, PyObject *args) |
| { |
| PyObject *v; |
| PyObject *prog, *globals = Py_None, *locals = Py_None; |
| int plain = 0; |
| |
| if (!PyArg_ParseTuple(args, "O|OO:exec", &prog, &globals, &locals)) |
| return NULL; |
| |
| if (globals == Py_None) { |
| globals = PyEval_GetGlobals(); |
| if (locals == Py_None) { |
| locals = PyEval_GetLocals(); |
| plain = 1; |
| } |
| if (!globals || !locals) { |
| PyErr_SetString(PyExc_SystemError, |
| "globals and locals cannot be NULL"); |
| return NULL; |
| } |
| } |
| else if (locals == Py_None) |
| locals = globals; |
| if (!PyString_Check(prog) && |
| !PyUnicode_Check(prog) && |
| !PyCode_Check(prog)) { |
| PyErr_Format(PyExc_TypeError, |
| "exec() arg 1 must be a string, file, or code " |
| "object, not %.100s", prog->ob_type->tp_name); |
| return NULL; |
| } |
| if (!PyDict_Check(globals)) { |
| PyErr_Format(PyExc_TypeError, "exec() arg 2 must be a dict, not %.100s", |
| globals->ob_type->tp_name); |
| return NULL; |
| } |
| if (!PyMapping_Check(locals)) { |
| PyErr_Format(PyExc_TypeError, |
| "arg 3 must be a mapping or None, not %.100s", |
| locals->ob_type->tp_name); |
| return NULL; |
| } |
| if (PyDict_GetItemString(globals, "__builtins__") == NULL) { |
| if (PyDict_SetItemString(globals, "__builtins__", |
| PyEval_GetBuiltins()) != 0) |
| return NULL; |
| } |
| |
| if (PyCode_Check(prog)) { |
| if (PyCode_GetNumFree((PyCodeObject *)prog) > 0) { |
| PyErr_SetString(PyExc_TypeError, |
| "code object passed to exec() may not " |
| "contain free variables"); |
| return NULL; |
| } |
| v = PyEval_EvalCode((PyCodeObject *) prog, globals, locals); |
| } |
| else { |
| char *str = source_as_string(prog); |
| PyCompilerFlags cf; |
| if (str == NULL) |
| return NULL; |
| cf.cf_flags = PyCF_SOURCE_IS_UTF8; |
| if (PyEval_MergeCompilerFlags(&cf)) |
| v = PyRun_StringFlags(str, Py_file_input, globals, |
| locals, &cf); |
| else |
| v = PyRun_String(str, Py_file_input, globals, locals); |
| } |
| if (v == NULL) |
| return NULL; |
| Py_DECREF(v); |
| Py_RETURN_NONE; |
| } |
| |
| PyDoc_STRVAR(exec_doc, |
| "exec(object[, globals[, locals]])\n\ |
| \n\ |
| Read and execute code from a object, which can be a string, a code\n\ |
| object or a file object.\n\ |
| The globals and locals are dictionaries, defaulting to the current\n\ |
| globals and locals. If only globals is given, locals defaults to it."); |
| |
| |
| static PyObject * |
| builtin_getattr(PyObject *self, PyObject *args) |
| { |
| PyObject *v, *result, *dflt = NULL, *release = NULL; |
| PyObject *name; |
| |
| if (!PyArg_UnpackTuple(args, "getattr", 2, 3, &v, &name, &dflt)) |
| return NULL; |
| |
| if (PyString_Check(name)) { |
| release = PyString_AsDecodedObject(name, NULL, NULL); |
| if (!release) |
| return NULL; |
| name = release; |
| } |
| |
| if (!PyUnicode_Check(name)) { |
| PyErr_SetString(PyExc_TypeError, |
| "getattr(): attribute name must be string"); |
| Py_XDECREF(release); |
| return NULL; |
| } |
| result = PyObject_GetAttr(v, name); |
| if (result == NULL && dflt != NULL && |
| PyErr_ExceptionMatches(PyExc_AttributeError)) |
| { |
| PyErr_Clear(); |
| Py_INCREF(dflt); |
| result = dflt; |
| } |
| Py_XDECREF(release); |
| return result; |
| } |
| |
| PyDoc_STRVAR(getattr_doc, |
| "getattr(object, name[, default]) -> value\n\ |
| \n\ |
| Get a named attribute from an object; getattr(x, 'y') is equivalent to x.y.\n\ |
| When a default argument is given, it is returned when the attribute doesn't\n\ |
| exist; without it, an exception is raised in that case."); |
| |
| |
| static PyObject * |
| builtin_globals(PyObject *self) |
| { |
| PyObject *d; |
| |
| d = PyEval_GetGlobals(); |
| Py_XINCREF(d); |
| return d; |
| } |
| |
| PyDoc_STRVAR(globals_doc, |
| "globals() -> dictionary\n\ |
| \n\ |
| Return the dictionary containing the current scope's global variables."); |
| |
| |
| static PyObject * |
| builtin_hasattr(PyObject *self, PyObject *args) |
| { |
| PyObject *v; |
| PyObject *name; |
| |
| if (!PyArg_UnpackTuple(args, "hasattr", 2, 2, &v, &name)) |
| return NULL; |
| if (!PyUnicode_Check(name)) { |
| PyErr_SetString(PyExc_TypeError, |
| "hasattr(): attribute name must be string"); |
| return NULL; |
| } |
| v = PyObject_GetAttr(v, name); |
| if (v == NULL) { |
| PyErr_Clear(); |
| Py_INCREF(Py_False); |
| return Py_False; |
| } |
| Py_DECREF(v); |
| Py_INCREF(Py_True); |
| return Py_True; |
| } |
| |
| PyDoc_STRVAR(hasattr_doc, |
| "hasattr(object, name) -> bool\n\ |
| \n\ |
| Return whether the object has an attribute with the given name.\n\ |
| (This is done by calling getattr(object, name) and catching exceptions.)"); |
| |
| |
| static PyObject * |
| builtin_id(PyObject *self, PyObject *v) |
| { |
| return PyLong_FromVoidPtr(v); |
| } |
| |
| PyDoc_STRVAR(id_doc, |
| "id(object) -> integer\n\ |
| \n\ |
| Return the identity of an object. This is guaranteed to be unique among\n\ |
| simultaneously existing objects. (Hint: it's the object's memory address.)"); |
| |
| |
| static PyObject * |
| builtin_map(PyObject *self, PyObject *args) |
| { |
| PyObject *itertools, *imap, *result; |
| itertools = PyImport_ImportModule("itertools"); |
| if (itertools == NULL) |
| return NULL; |
| imap = PyObject_GetAttrString(itertools, "imap"); |
| Py_DECREF(itertools); |
| if (imap == NULL) |
| return NULL; |
| result = PyObject_Call(imap, args, NULL); |
| Py_DECREF(imap); |
| return result; |
| } |
| |
| PyDoc_STRVAR(map_doc, |
| "map(function, iterable[, iterable, ...]) -> iterator\n\ |
| \n\ |
| Return an iterator yielding the results of applying the function to the\n\ |
| items of the argument iterables(s). If more than one iterable is given,\n\ |
| the function is called with an argument list consisting of the\n\ |
| corresponding item of each iterable, until an iterable is exhausted.\n\ |
| If the function is None, 'lambda *a: a' is assumed.\n\ |
| (This is identical to itertools.imap().)"); |
| |
| |
| static PyObject * |
| builtin_next(PyObject *self, PyObject *args) |
| { |
| PyObject *it, *res; |
| PyObject *def = NULL; |
| |
| if (!PyArg_UnpackTuple(args, "next", 1, 2, &it, &def)) |
| return NULL; |
| if (!PyIter_Check(it)) { |
| PyErr_Format(PyExc_TypeError, |
| "%.200s object is not an iterator", it->ob_type->tp_name); |
| return NULL; |
| } |
| |
| res = (*it->ob_type->tp_iternext)(it); |
| if (res == NULL) { |
| if (def) { |
| if (PyErr_Occurred() && |
| !PyErr_ExceptionMatches(PyExc_StopIteration)) |
| return NULL; |
| PyErr_Clear(); |
| Py_INCREF(def); |
| return def; |
| } else if (PyErr_Occurred()) { |
| return NULL; |
| } else { |
| PyErr_SetNone(PyExc_StopIteration); |
| return NULL; |
| } |
| } |
| return res; |
| } |
| |
| PyDoc_STRVAR(next_doc, |
| "next(iterator[, default])\n\ |
| \n\ |
| Return the next item from the iterator. If default is given and the iterator\n\ |
| is exhausted, it is returned instead of raising StopIteration."); |
| |
| |
| static PyObject * |
| builtin_setattr(PyObject *self, PyObject *args) |
| { |
| PyObject *v; |
| PyObject *name; |
| PyObject *value; |
| |
| if (!PyArg_UnpackTuple(args, "setattr", 3, 3, &v, &name, &value)) |
| return NULL; |
| if (PyObject_SetAttr(v, name, value) != 0) |
| return NULL; |
| Py_INCREF(Py_None); |
| return Py_None; |
| } |
| |
| PyDoc_STRVAR(setattr_doc, |
| "setattr(object, name, value)\n\ |
| \n\ |
| Set a named attribute on an object; setattr(x, 'y', v) is equivalent to\n\ |
| ``x.y = v''."); |
| |
| |
| static PyObject * |
| builtin_delattr(PyObject *self, PyObject *args) |
| { |
| PyObject *v; |
| PyObject *name; |
| |
| if (!PyArg_UnpackTuple(args, "delattr", 2, 2, &v, &name)) |
| return NULL; |
| if (PyObject_SetAttr(v, name, (PyObject *)NULL) != 0) |
| return NULL; |
| Py_INCREF(Py_None); |
| return Py_None; |
| } |
| |
| PyDoc_STRVAR(delattr_doc, |
| "delattr(object, name)\n\ |
| \n\ |
| Delete a named attribute on an object; delattr(x, 'y') is equivalent to\n\ |
| ``del x.y''."); |
| |
| |
| static PyObject * |
| builtin_hash(PyObject *self, PyObject *v) |
| { |
| long x; |
| |
| x = PyObject_Hash(v); |
| if (x == -1) |
| return NULL; |
| return PyInt_FromLong(x); |
| } |
| |
| PyDoc_STRVAR(hash_doc, |
| "hash(object) -> integer\n\ |
| \n\ |
| Return a hash value for the object. Two objects with the same value have\n\ |
| the same hash value. The reverse is not necessarily true, but likely."); |
| |
| |
| static PyObject * |
| builtin_hex(PyObject *self, PyObject *v) |
| { |
| return PyNumber_ToBase(v, 16); |
| } |
| |
| PyDoc_STRVAR(hex_doc, |
| "hex(number) -> string\n\ |
| \n\ |
| Return the hexadecimal representation of an integer or long integer."); |
| |
| |
| static PyObject * |
| builtin_iter(PyObject *self, PyObject *args) |
| { |
| PyObject *v, *w = NULL; |
| |
| if (!PyArg_UnpackTuple(args, "iter", 1, 2, &v, &w)) |
| return NULL; |
| if (w == NULL) |
| return PyObject_GetIter(v); |
| if (!PyCallable_Check(v)) { |
| PyErr_SetString(PyExc_TypeError, |
| "iter(v, w): v must be callable"); |
| return NULL; |
| } |
| return PyCallIter_New(v, w); |
| } |
| |
| PyDoc_STRVAR(iter_doc, |
| "iter(collection) -> iterator\n\ |
| iter(callable, sentinel) -> iterator\n\ |
| \n\ |
| Get an iterator from an object. In the first form, the argument must\n\ |
| supply its own iterator, or be a sequence.\n\ |
| In the second form, the callable is called until it returns the sentinel."); |
| |
| |
| static PyObject * |
| builtin_len(PyObject *self, PyObject *v) |
| { |
| Py_ssize_t res; |
| |
| res = PyObject_Size(v); |
| if (res < 0 && PyErr_Occurred()) |
| return NULL; |
| return PyInt_FromSsize_t(res); |
| } |
| |
| PyDoc_STRVAR(len_doc, |
| "len(object) -> integer\n\ |
| \n\ |
| Return the number of items of a sequence or mapping."); |
| |
| |
| static PyObject * |
| builtin_locals(PyObject *self) |
| { |
| PyObject *d; |
| |
| d = PyEval_GetLocals(); |
| Py_XINCREF(d); |
| return d; |
| } |
| |
| PyDoc_STRVAR(locals_doc, |
| "locals() -> dictionary\n\ |
| \n\ |
| Update and return a dictionary containing the current scope's local variables."); |
| |
| |
| static PyObject * |
| min_max(PyObject *args, PyObject *kwds, int op) |
| { |
| PyObject *v, *it, *item, *val, *maxitem, *maxval, *keyfunc=NULL; |
| const char *name = op == Py_LT ? "min" : "max"; |
| |
| if (PyTuple_Size(args) > 1) |
| v = args; |
| else if (!PyArg_UnpackTuple(args, (char *)name, 1, 1, &v)) |
| return NULL; |
| |
| if (kwds != NULL && PyDict_Check(kwds) && PyDict_Size(kwds)) { |
| keyfunc = PyDict_GetItemString(kwds, "key"); |
| if (PyDict_Size(kwds)!=1 || keyfunc == NULL) { |
| PyErr_Format(PyExc_TypeError, |
| "%s() got an unexpected keyword argument", name); |
| return NULL; |
| } |
| } |
| |
| it = PyObject_GetIter(v); |
| if (it == NULL) |
| return NULL; |
| |
| maxitem = NULL; /* the result */ |
| maxval = NULL; /* the value associated with the result */ |
| while (( item = PyIter_Next(it) )) { |
| /* get the value from the key function */ |
| if (keyfunc != NULL) { |
| val = PyObject_CallFunctionObjArgs(keyfunc, item, NULL); |
| if (val == NULL) |
| goto Fail_it_item; |
| } |
| /* no key function; the value is the item */ |
| else { |
| val = item; |
| Py_INCREF(val); |
| } |
| |
| /* maximum value and item are unset; set them */ |
| if (maxval == NULL) { |
| maxitem = item; |
| maxval = val; |
| } |
| /* maximum value and item are set; update them as necessary */ |
| else { |
| int cmp = PyObject_RichCompareBool(val, maxval, op); |
| if (cmp < 0) |
| goto Fail_it_item_and_val; |
| else if (cmp > 0) { |
| Py_DECREF(maxval); |
| Py_DECREF(maxitem); |
| maxval = val; |
| maxitem = item; |
| } |
| else { |
| Py_DECREF(item); |
| Py_DECREF(val); |
| } |
| } |
| } |
| if (PyErr_Occurred()) |
| goto Fail_it; |
| if (maxval == NULL) { |
| PyErr_Format(PyExc_ValueError, |
| "%s() arg is an empty sequence", name); |
| assert(maxitem == NULL); |
| } |
| else |
| Py_DECREF(maxval); |
| Py_DECREF(it); |
| return maxitem; |
| |
| Fail_it_item_and_val: |
| Py_DECREF(val); |
| Fail_it_item: |
| Py_DECREF(item); |
| Fail_it: |
| Py_XDECREF(maxval); |
| Py_XDECREF(maxitem); |
| Py_DECREF(it); |
| return NULL; |
| } |
| |
| static PyObject * |
| builtin_min(PyObject *self, PyObject *args, PyObject *kwds) |
| { |
| return min_max(args, kwds, Py_LT); |
| } |
| |
| PyDoc_STRVAR(min_doc, |
| "min(iterable[, key=func]) -> value\n\ |
| min(a, b, c, ...[, key=func]) -> value\n\ |
| \n\ |
| With a single iterable argument, return its smallest item.\n\ |
| With two or more arguments, return the smallest argument."); |
| |
| |
| static PyObject * |
| builtin_max(PyObject *self, PyObject *args, PyObject *kwds) |
| { |
| return min_max(args, kwds, Py_GT); |
| } |
| |
| PyDoc_STRVAR(max_doc, |
| "max(iterable[, key=func]) -> value\n\ |
| max(a, b, c, ...[, key=func]) -> value\n\ |
| \n\ |
| With a single iterable argument, return its largest item.\n\ |
| With two or more arguments, return the largest argument."); |
| |
| |
| static PyObject * |
| builtin_oct(PyObject *self, PyObject *v) |
| { |
| return PyNumber_ToBase(v, 8); |
| } |
| |
| PyDoc_STRVAR(oct_doc, |
| "oct(number) -> string\n\ |
| \n\ |
| Return the octal representation of an integer or long integer."); |
| |
| |
| static PyObject * |
| builtin_ord(PyObject *self, PyObject* obj) |
| { |
| long ord; |
| Py_ssize_t size; |
| |
| if (PyString_Check(obj)) { |
| size = PyString_GET_SIZE(obj); |
| if (size == 1) { |
| ord = (long)((unsigned char)*PyString_AS_STRING(obj)); |
| return PyInt_FromLong(ord); |
| } |
| } |
| else if (PyUnicode_Check(obj)) { |
| size = PyUnicode_GET_SIZE(obj); |
| if (size == 1) { |
| ord = (long)*PyUnicode_AS_UNICODE(obj); |
| return PyInt_FromLong(ord); |
| } |
| #ifndef Py_UNICODE_WIDE |
| if (size == 2) { |
| /* Decode a valid surrogate pair */ |
| int c0 = PyUnicode_AS_UNICODE(obj)[0]; |
| int c1 = PyUnicode_AS_UNICODE(obj)[1]; |
| if (0xD800 <= c0 && c0 <= 0xDBFF && |
| 0xDC00 <= c1 && c1 <= 0xDFFF) { |
| ord = ((((c0 & 0x03FF) << 10) | (c1 & 0x03FF)) + |
| 0x00010000); |
| return PyInt_FromLong(ord); |
| } |
| } |
| #endif |
| } |
| else if (PyBytes_Check(obj)) { |
| /* XXX Hopefully this is temporary */ |
| size = PyBytes_GET_SIZE(obj); |
| if (size == 1) { |
| ord = (long)((unsigned char)*PyBytes_AS_STRING(obj)); |
| return PyInt_FromLong(ord); |
| } |
| } |
| else { |
| PyErr_Format(PyExc_TypeError, |
| "ord() expected string of length 1, but " \ |
| "%.200s found", obj->ob_type->tp_name); |
| return NULL; |
| } |
| |
| PyErr_Format(PyExc_TypeError, |
| "ord() expected a character, " |
| "but string of length %zd found", |
| size); |
| return NULL; |
| } |
| |
| PyDoc_VAR(ord_doc) = PyDoc_STR( |
| "ord(c) -> integer\n\ |
| \n\ |
| Return the integer ordinal of a one-character string." |
| ) |
| #ifndef Py_UNICODE_WIDE |
| PyDoc_STR( |
| "\nA valid surrogate pair is also accepted." |
| ) |
| #endif |
| ; |
| |
| |
| static PyObject * |
| builtin_pow(PyObject *self, PyObject *args) |
| { |
| PyObject *v, *w, *z = Py_None; |
| |
| if (!PyArg_UnpackTuple(args, "pow", 2, 3, &v, &w, &z)) |
| return NULL; |
| return PyNumber_Power(v, w, z); |
| } |
| |
| PyDoc_STRVAR(pow_doc, |
| "pow(x, y[, z]) -> number\n\ |
| \n\ |
| With two arguments, equivalent to x**y. With three arguments,\n\ |
| equivalent to (x**y) % z, but may be more efficient (e.g. for longs)."); |
| |
| |
| |
| static PyObject * |
| builtin_print(PyObject *self, PyObject *args, PyObject *kwds) |
| { |
| static char *kwlist[] = {"sep", "end", "file", 0}; |
| static PyObject *dummy_args; |
| PyObject *sep = NULL, *end = NULL, *file = NULL; |
| int i, err; |
| |
| if (dummy_args == NULL) { |
| if (!(dummy_args = PyTuple_New(0))) |
| return NULL; |
| } |
| if (!PyArg_ParseTupleAndKeywords(dummy_args, kwds, "|OOO:print", |
| kwlist, &sep, &end, &file)) |
| return NULL; |
| if (file == NULL || file == Py_None) |
| file = PySys_GetObject("stdout"); |
| |
| if (sep && sep != Py_None && !PyString_Check(sep) && |
| !PyUnicode_Check(sep)) { |
| PyErr_Format(PyExc_TypeError, |
| "sep must be None, str or unicode, not %.200s", |
| sep->ob_type->tp_name); |
| return NULL; |
| } |
| if (end && end != Py_None && !PyString_Check(end) && |
| !PyUnicode_Check(end)) { |
| PyErr_Format(PyExc_TypeError, |
| "end must be None, str or unicode, not %.200s", |
| end->ob_type->tp_name); |
| return NULL; |
| } |
| |
| for (i = 0; i < PyTuple_Size(args); i++) { |
| if (i > 0) { |
| if (sep == NULL || sep == Py_None) |
| err = PyFile_WriteString(" ", file); |
| else |
| err = PyFile_WriteObject(sep, file, |
| Py_PRINT_RAW); |
| if (err) |
| return NULL; |
| } |
| err = PyFile_WriteObject(PyTuple_GetItem(args, i), file, |
| Py_PRINT_RAW); |
| if (err) |
| return NULL; |
| } |
| |
| if (end == NULL || end == Py_None) |
| err = PyFile_WriteString("\n", file); |
| else |
| err = PyFile_WriteObject(end, file, Py_PRINT_RAW); |
| if (err) |
| return NULL; |
| |
| Py_RETURN_NONE; |
| } |
| |
| PyDoc_STRVAR(print_doc, |
| "print(value, ..., file=None, sep=' ', end='\\n')\n\ |
| \n\ |
| Prints the values to a stream, or to sys.stdout by default.\n\ |
| Optional keyword arguments:\n\ |
| file: a file-like object (stream); defaults to the current sys.stdout.\n\ |
| sep: string inserted between values, default a space.\n\ |
| end: string appended after the last value, default a newline."); |
| |
| |
| static PyObject * |
| builtin_input(PyObject *self, PyObject *args) |
| { |
| PyObject *promptarg = NULL; |
| PyObject *fin = PySys_GetObject("stdin"); |
| PyObject *fout = PySys_GetObject("stdout"); |
| PyObject *ferr = PySys_GetObject("stderr"); |
| PyObject *tmp; |
| long fd; |
| int tty; |
| |
| /* Parse arguments */ |
| if (!PyArg_UnpackTuple(args, "input", 0, 1, &promptarg)) |
| return NULL; |
| |
| /* Check that stdin/out/err are intact */ |
| if (fin == NULL) { |
| PyErr_SetString(PyExc_RuntimeError, |
| "input(): lost sys.stdin"); |
| return NULL; |
| } |
| if (fout == NULL) { |
| PyErr_SetString(PyExc_RuntimeError, |
| "input(): lost sys.stdout"); |
| return NULL; |
| } |
| if (ferr == NULL) { |
| PyErr_SetString(PyExc_RuntimeError, |
| "input(): lost sys.stderr"); |
| return NULL; |
| } |
| |
| /* First of all, flush stderr */ |
| tmp = PyObject_CallMethod(ferr, "flush", ""); |
| if (tmp == NULL) |
| PyErr_Clear(); |
| else |
| Py_DECREF(tmp); |
| |
| /* We should only use (GNU) readline if Python's sys.stdin and |
| sys.stdout are the same as C's stdin and stdout, because we |
| need to pass it those. */ |
| tmp = PyObject_CallMethod(fin, "fileno", ""); |
| if (tmp == NULL) { |
| PyErr_Clear(); |
| tty = 0; |
| } |
| else { |
| fd = PyInt_AsLong(tmp); |
| Py_DECREF(tmp); |
| if (fd < 0 && PyErr_Occurred()) |
| return NULL; |
| tty = fd == fileno(stdin) && isatty(fd); |
| } |
| if (tty) { |
| tmp = PyObject_CallMethod(fout, "fileno", ""); |
| if (tmp == NULL) |
| PyErr_Clear(); |
| else { |
| fd = PyInt_AsLong(tmp); |
| Py_DECREF(tmp); |
| if (fd < 0 && PyErr_Occurred()) |
| return NULL; |
| tty = fd == fileno(stdout) && isatty(fd); |
| } |
| } |
| |
| /* If we're interactive, use (GNU) readline */ |
| if (tty) { |
| PyObject *po; |
| char *prompt; |
| char *s; |
| PyObject *result; |
| tmp = PyObject_CallMethod(fout, "flush", ""); |
| if (tmp == NULL) |
| PyErr_Clear(); |
| else |
| Py_DECREF(tmp); |
| if (promptarg != NULL) { |
| po = PyObject_Str(promptarg); |
| if (po == NULL) |
| return NULL; |
| prompt = PyString_AsString(po); |
| if (prompt == NULL) { |
| Py_DECREF(po); |
| return NULL; |
| } |
| } |
| else { |
| po = NULL; |
| prompt = ""; |
| } |
| s = PyOS_Readline(stdin, stdout, prompt); |
| Py_XDECREF(po); |
| if (s == NULL) { |
| if (!PyErr_Occurred()) |
| PyErr_SetNone(PyExc_KeyboardInterrupt); |
| return NULL; |
| } |
| if (*s == '\0') { |
| PyErr_SetNone(PyExc_EOFError); |
| result = NULL; |
| } |
| else { /* strip trailing '\n' */ |
| size_t len = strlen(s); |
| if (len > PY_SSIZE_T_MAX) { |
| PyErr_SetString(PyExc_OverflowError, |
| "input: input too long"); |
| result = NULL; |
| } |
| else { |
| result = PyString_FromStringAndSize(s, len-1); |
| } |
| } |
| PyMem_FREE(s); |
| return result; |
| } |
| |
| /* Fallback if we're not interactive */ |
| if (promptarg != NULL) { |
| if (PyFile_WriteObject(promptarg, fout, Py_PRINT_RAW) != 0) |
| return NULL; |
| } |
| tmp = PyObject_CallMethod(fout, "flush", ""); |
| if (tmp == NULL) |
| PyErr_Clear(); |
| else |
| Py_DECREF(tmp); |
| return PyFile_GetLine(fin, -1); |
| } |
| |
| PyDoc_STRVAR(input_doc, |
| "input([prompt]) -> string\n\ |
| \n\ |
| Read a string from standard input. The trailing newline is stripped.\n\ |
| If the user hits EOF (Unix: Ctl-D, Windows: Ctl-Z+Return), raise EOFError.\n\ |
| On Unix, GNU readline is used if enabled. The prompt string, if given,\n\ |
| is printed without a trailing newline before reading."); |
| |
| |
| static PyObject * |
| builtin_repr(PyObject *self, PyObject *v) |
| { |
| return PyObject_Repr(v); |
| } |
| |
| PyDoc_STRVAR(repr_doc, |
| "repr(object) -> string\n\ |
| \n\ |
| Return the canonical string representation of the object.\n\ |
| For most object types, eval(repr(object)) == object."); |
| |
| |
| static PyObject * |
| builtin_round(PyObject *self, PyObject *args, PyObject *kwds) |
| { |
| double number; |
| double f; |
| int ndigits = 0; |
| int i; |
| static char *kwlist[] = {"number", "ndigits", 0}; |
| |
| if (!PyArg_ParseTupleAndKeywords(args, kwds, "d|i:round", |
| kwlist, &number, &ndigits)) |
| return NULL; |
| f = 1.0; |
| i = abs(ndigits); |
| while (--i >= 0) |
| f = f*10.0; |
| if (ndigits < 0) |
| number /= f; |
| else |
| number *= f; |
| if (number >= 0.0) |
| number = floor(number + 0.5); |
| else |
| number = ceil(number - 0.5); |
| if (ndigits < 0) |
| number *= f; |
| else |
| number /= f; |
| return PyFloat_FromDouble(number); |
| } |
| |
| PyDoc_STRVAR(round_doc, |
| "round(number[, ndigits]) -> floating point number\n\ |
| \n\ |
| Round a number to a given precision in decimal digits (default 0 digits).\n\ |
| This always returns a floating point number. Precision may be negative."); |
| |
| static PyObject * |
| builtin_sorted(PyObject *self, PyObject *args, PyObject *kwds) |
| { |
| PyObject *newlist, *v, *seq, *compare=NULL, *keyfunc=NULL, *newargs; |
| PyObject *callable; |
| static char *kwlist[] = {"iterable", "cmp", "key", "reverse", 0}; |
| int reverse; |
| |
| /* args 1-4 should match listsort in Objects/listobject.c */ |
| if (!PyArg_ParseTupleAndKeywords(args, kwds, "O|OOi:sorted", |
| kwlist, &seq, &compare, &keyfunc, &reverse)) |
| return NULL; |
| |
| newlist = PySequence_List(seq); |
| if (newlist == NULL) |
| return NULL; |
| |
| callable = PyObject_GetAttrString(newlist, "sort"); |
| if (callable == NULL) { |
| Py_DECREF(newlist); |
| return NULL; |
| } |
| |
| newargs = PyTuple_GetSlice(args, 1, 4); |
| if (newargs == NULL) { |
| Py_DECREF(newlist); |
| Py_DECREF(callable); |
| return NULL; |
| } |
| |
| v = PyObject_Call(callable, newargs, kwds); |
| Py_DECREF(newargs); |
| Py_DECREF(callable); |
| if (v == NULL) { |
| Py_DECREF(newlist); |
| return NULL; |
| } |
| Py_DECREF(v); |
| return newlist; |
| } |
| |
| PyDoc_STRVAR(sorted_doc, |
| "sorted(iterable, cmp=None, key=None, reverse=False) --> new sorted list"); |
| |
| static PyObject * |
| builtin_vars(PyObject *self, PyObject *args) |
| { |
| PyObject *v = NULL; |
| PyObject *d; |
| |
| if (!PyArg_UnpackTuple(args, "vars", 0, 1, &v)) |
| return NULL; |
| if (v == NULL) { |
| d = PyEval_GetLocals(); |
| if (d == NULL) { |
| if (!PyErr_Occurred()) |
| PyErr_SetString(PyExc_SystemError, |
| "vars(): no locals!?"); |
| } |
| else |
| Py_INCREF(d); |
| } |
| else { |
| d = PyObject_GetAttrString(v, "__dict__"); |
| if (d == NULL) { |
| PyErr_SetString(PyExc_TypeError, |
| "vars() argument must have __dict__ attribute"); |
| return NULL; |
| } |
| } |
| return d; |
| } |
| |
| PyDoc_STRVAR(vars_doc, |
| "vars([object]) -> dictionary\n\ |
| \n\ |
| Without arguments, equivalent to locals().\n\ |
| With an argument, equivalent to object.__dict__."); |
| |
| |
| static PyObject* |
| builtin_sum(PyObject *self, PyObject *args) |
| { |
| PyObject *seq; |
| PyObject *result = NULL; |
| PyObject *temp, *item, *iter; |
| |
| if (!PyArg_UnpackTuple(args, "sum", 1, 2, &seq, &result)) |
| return NULL; |
| |
| iter = PyObject_GetIter(seq); |
| if (iter == NULL) |
| return NULL; |
| |
| if (result == NULL) { |
| result = PyInt_FromLong(0); |
| if (result == NULL) { |
| Py_DECREF(iter); |
| return NULL; |
| } |
| } else { |
| /* reject string values for 'start' parameter */ |
| if (PyObject_TypeCheck(result, &PyBaseString_Type)) { |
| PyErr_SetString(PyExc_TypeError, |
| "sum() can't sum strings [use ''.join(seq) instead]"); |
| Py_DECREF(iter); |
| return NULL; |
| } |
| Py_INCREF(result); |
| } |
| |
| for(;;) { |
| item = PyIter_Next(iter); |
| if (item == NULL) { |
| /* error, or end-of-sequence */ |
| if (PyErr_Occurred()) { |
| Py_DECREF(result); |
| result = NULL; |
| } |
| break; |
| } |
| temp = PyNumber_Add(result, item); |
| Py_DECREF(result); |
| Py_DECREF(item); |
| result = temp; |
| if (result == NULL) |
| break; |
| } |
| Py_DECREF(iter); |
| return result; |
| } |
| |
| PyDoc_STRVAR(sum_doc, |
| "sum(sequence[, start]) -> value\n\ |
| \n\ |
| Returns the sum of a sequence of numbers (NOT strings) plus the value\n\ |
| of parameter 'start' (which defaults to 0). When the sequence is\n\ |
| empty, returns start."); |
| |
| |
| static PyObject * |
| builtin_isinstance(PyObject *self, PyObject *args) |
| { |
| PyObject *inst; |
| PyObject *cls; |
| int retval; |
| |
| if (!PyArg_UnpackTuple(args, "isinstance", 2, 2, &inst, &cls)) |
| return NULL; |
| |
| retval = PyObject_IsInstance(inst, cls); |
| if (retval < 0) |
| return NULL; |
| return PyBool_FromLong(retval); |
| } |
| |
| PyDoc_STRVAR(isinstance_doc, |
| "isinstance(object, class-or-type-or-tuple) -> bool\n\ |
| \n\ |
| Return whether an object is an instance of a class or of a subclass thereof.\n\ |
| With a type as second argument, return whether that is the object's type.\n\ |
| The form using a tuple, isinstance(x, (A, B, ...)), is a shortcut for\n\ |
| isinstance(x, A) or isinstance(x, B) or ... (etc.)."); |
| |
| |
| static PyObject * |
| builtin_issubclass(PyObject *self, PyObject *args) |
| { |
| PyObject *derived; |
| PyObject *cls; |
| int retval; |
| |
| if (!PyArg_UnpackTuple(args, "issubclass", 2, 2, &derived, &cls)) |
| return NULL; |
| |
| retval = PyObject_IsSubclass(derived, cls); |
| if (retval < 0) |
| return NULL; |
| return PyBool_FromLong(retval); |
| } |
| |
| PyDoc_STRVAR(issubclass_doc, |
| "issubclass(C, B) -> bool\n\ |
| \n\ |
| Return whether class C is a subclass (i.e., a derived class) of class B.\n\ |
| When using a tuple as the second argument issubclass(X, (A, B, ...)),\n\ |
| is a shortcut for issubclass(X, A) or issubclass(X, B) or ... (etc.)."); |
| |
| |
| static PyObject* |
| builtin_zip(PyObject *self, PyObject *args) |
| { |
| /* args must be a tuple */ |
| assert(PyTuple_Check(args)); |
| |
| return _PyZip_CreateIter(args); |
| } |
| |
| |
| PyDoc_STRVAR(zip_doc, |
| "zip(it1 [, it2 [...]]) -> iter([(it1[0], it2[0] ...), ...])\n\ |
| \n\ |
| Return an iterator yielding tuples, where each tuple contains the\n\ |
| corresponding element from each of the argument iterables.\n\ |
| The returned iterator ends when the shortest argument iterable is exhausted.\n\ |
| (This is identical to itertools.izip().)"); |
| |
| |
| static PyMethodDef builtin_methods[] = { |
| {"__build_class__", (PyCFunction)builtin___build_class__, |
| METH_VARARGS | METH_KEYWORDS, build_class_doc}, |
| {"__import__", (PyCFunction)builtin___import__, METH_VARARGS | METH_KEYWORDS, import_doc}, |
| {"abs", builtin_abs, METH_O, abs_doc}, |
| {"all", builtin_all, METH_O, all_doc}, |
| {"any", builtin_any, METH_O, any_doc}, |
| {"bin", builtin_bin, METH_O, bin_doc}, |
| {"chr", builtin_chr, METH_VARARGS, chr_doc}, |
| {"chr8", builtin_chr8, METH_VARARGS, chr8_doc}, |
| {"cmp", builtin_cmp, METH_VARARGS, cmp_doc}, |
| {"compile", (PyCFunction)builtin_compile, METH_VARARGS | METH_KEYWORDS, compile_doc}, |
| {"delattr", builtin_delattr, METH_VARARGS, delattr_doc}, |
| {"dir", builtin_dir, METH_VARARGS, dir_doc}, |
| {"divmod", builtin_divmod, METH_VARARGS, divmod_doc}, |
| {"eval", builtin_eval, METH_VARARGS, eval_doc}, |
| {"exec", builtin_exec, METH_VARARGS, exec_doc}, |
| {"filter", builtin_filter, METH_VARARGS, filter_doc}, |
| {"getattr", builtin_getattr, METH_VARARGS, getattr_doc}, |
| {"globals", (PyCFunction)builtin_globals, METH_NOARGS, globals_doc}, |
| {"hasattr", builtin_hasattr, METH_VARARGS, hasattr_doc}, |
| {"hash", builtin_hash, METH_O, hash_doc}, |
| {"hex", builtin_hex, METH_O, hex_doc}, |
| {"id", builtin_id, METH_O, id_doc}, |
| {"input", builtin_input, METH_VARARGS, input_doc}, |
| {"isinstance", builtin_isinstance, METH_VARARGS, isinstance_doc}, |
| {"issubclass", builtin_issubclass, METH_VARARGS, issubclass_doc}, |
| {"iter", builtin_iter, METH_VARARGS, iter_doc}, |
| {"len", builtin_len, METH_O, len_doc}, |
| {"locals", (PyCFunction)builtin_locals, METH_NOARGS, locals_doc}, |
| {"map", builtin_map, METH_VARARGS, map_doc}, |
| {"max", (PyCFunction)builtin_max, METH_VARARGS | METH_KEYWORDS, max_doc}, |
| {"min", (PyCFunction)builtin_min, METH_VARARGS | METH_KEYWORDS, min_doc}, |
| {"next", (PyCFunction)builtin_next, METH_VARARGS, next_doc}, |
| {"oct", builtin_oct, METH_O, oct_doc}, |
| {"ord", builtin_ord, METH_O, ord_doc}, |
| {"pow", builtin_pow, METH_VARARGS, pow_doc}, |
| {"print", (PyCFunction)builtin_print, METH_VARARGS | METH_KEYWORDS, print_doc}, |
| {"repr", builtin_repr, METH_O, repr_doc}, |
| {"round", (PyCFunction)builtin_round, METH_VARARGS | METH_KEYWORDS, round_doc}, |
| {"setattr", builtin_setattr, METH_VARARGS, setattr_doc}, |
| {"sorted", (PyCFunction)builtin_sorted, METH_VARARGS | METH_KEYWORDS, sorted_doc}, |
| {"sum", builtin_sum, METH_VARARGS, sum_doc}, |
| {"vars", builtin_vars, METH_VARARGS, vars_doc}, |
| {"zip", builtin_zip, METH_VARARGS, zip_doc}, |
| {NULL, NULL}, |
| }; |
| |
| PyDoc_STRVAR(builtin_doc, |
| "Built-in functions, exceptions, and other objects.\n\ |
| \n\ |
| Noteworthy: None is the `nil' object; Ellipsis represents `...' in slices."); |
| |
| PyObject * |
| _PyBuiltin_Init(void) |
| { |
| PyObject *mod, *dict, *debug; |
| mod = Py_InitModule4("__builtin__", builtin_methods, |
| builtin_doc, (PyObject *)NULL, |
| PYTHON_API_VERSION); |
| if (mod == NULL) |
| return NULL; |
| dict = PyModule_GetDict(mod); |
| |
| #ifdef Py_TRACE_REFS |
| /* __builtin__ exposes a number of statically allocated objects |
| * that, before this code was added in 2.3, never showed up in |
| * the list of "all objects" maintained by Py_TRACE_REFS. As a |
| * result, programs leaking references to None and False (etc) |
| * couldn't be diagnosed by examining sys.getobjects(0). |
| */ |
| #define ADD_TO_ALL(OBJECT) _Py_AddToAllObjects((PyObject *)(OBJECT), 0) |
| #else |
| #define ADD_TO_ALL(OBJECT) (void)0 |
| #endif |
| |
| #define SETBUILTIN(NAME, OBJECT) \ |
| if (PyDict_SetItemString(dict, NAME, (PyObject *)OBJECT) < 0) \ |
| return NULL; \ |
| ADD_TO_ALL(OBJECT) |
| |
| SETBUILTIN("None", Py_None); |
| SETBUILTIN("Ellipsis", Py_Ellipsis); |
| SETBUILTIN("NotImplemented", Py_NotImplemented); |
| SETBUILTIN("False", Py_False); |
| SETBUILTIN("True", Py_True); |
| SETBUILTIN("basestring", &PyBaseString_Type); |
| SETBUILTIN("bool", &PyBool_Type); |
| SETBUILTIN("buffer", &PyBuffer_Type); |
| SETBUILTIN("bytes", &PyBytes_Type); |
| SETBUILTIN("classmethod", &PyClassMethod_Type); |
| #ifndef WITHOUT_COMPLEX |
| SETBUILTIN("complex", &PyComplex_Type); |
| #endif |
| SETBUILTIN("dict", &PyDict_Type); |
| SETBUILTIN("enumerate", &PyEnum_Type); |
| SETBUILTIN("float", &PyFloat_Type); |
| SETBUILTIN("frozenset", &PyFrozenSet_Type); |
| SETBUILTIN("property", &PyProperty_Type); |
| SETBUILTIN("int", &PyLong_Type); |
| SETBUILTIN("list", &PyList_Type); |
| SETBUILTIN("object", &PyBaseObject_Type); |
| SETBUILTIN("range", &PyRange_Type); |
| SETBUILTIN("reversed", &PyReversed_Type); |
| SETBUILTIN("set", &PySet_Type); |
| SETBUILTIN("slice", &PySlice_Type); |
| SETBUILTIN("staticmethod", &PyStaticMethod_Type); |
| SETBUILTIN("str", &PyUnicode_Type); |
| SETBUILTIN("str8", &PyString_Type); |
| SETBUILTIN("super", &PySuper_Type); |
| SETBUILTIN("tuple", &PyTuple_Type); |
| SETBUILTIN("type", &PyType_Type); |
| debug = PyBool_FromLong(Py_OptimizeFlag == 0); |
| if (PyDict_SetItemString(dict, "__debug__", debug) < 0) { |
| Py_XDECREF(debug); |
| return NULL; |
| } |
| Py_XDECREF(debug); |
| |
| return mod; |
| #undef ADD_TO_ALL |
| #undef SETBUILTIN |
| } |