mirror of
https://github.com/python/cpython
synced 2024-09-15 23:46:26 +00:00
Revised implementation of CALL_FUNCTION and friends.
More revision still needed. Much of the code that was in the mainloop was moved to a series of helper functions. PyEval_CallObjectWithKeywords was split into two parts. The first part now only does argument handling. The second part is now named call_object and delegates the call to a call_(function,method,etc.) helper. XXX The call_XXX helper functions should be replaced with tp_call functions for the respective types. The CALL_FUNCTION implementation contains three kinds of optimization: 1. fast_cfunction and fast_function are called when the arguments on the stack can be passed directly to eval_code2() without copying them into a tuple. 2. PyCFunction objects are dispatched immediately, because they are presumed to occur more often than anything else. 3. Bound methods are dispatched inline. The method object contains a pointer to the function object that will be called. The function is called from within the mainloop, which may allow optimization #1 to be used, too. The extened call implementation -- f(*args) and f(**kw) -- are implemented as a separate case in the mainloop. This allows the common case of normal function calls to execute without wasting time on checks for extended calls, although it does introduce a small amount of code duplication. Also, the unused final argument of eval_code2() was removed. This is probably the last trace of the access statement :-).
This commit is contained in:
Jeremy Hylton
parent
c4e1775081
commit
5282044be7
725
Python/ceval.c
725
Python/ceval.c
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@ -29,6 +29,7 @@
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#define CHECKEXC 1 /* Double-check exception checking */
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#endif
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typedef PyObject *(*callproc)(PyObject *, PyObject *, PyObject *);
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/* Forward declarations */
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@ -36,16 +37,29 @@ static PyObject *eval_code2(PyCodeObject *,
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PyObject *, PyObject *,
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PyObject **, int,
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PyObject **, int,
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PyObject **, int,
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PyObject *);
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PyObject **, int);
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static PyObject *call_object(PyObject *, PyObject *, PyObject *);
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static PyObject *call_cfunction(PyObject *, PyObject *, PyObject *);
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static PyObject *call_instance(PyObject *, PyObject *, PyObject *);
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static PyObject *call_method(PyObject *, PyObject *, PyObject *);
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static PyObject *call_eval_code2(PyObject *, PyObject *, PyObject *);
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static PyObject *fast_function(PyObject *, PyObject ***, int, int, int);
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static PyObject *fast_cfunction(PyObject *, PyObject ***, int);
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static PyObject *do_call(PyObject *, PyObject ***, int, int);
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static PyObject *ext_do_call(PyObject *, PyObject ***, int, int, int);
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static PyObject *update_keyword_args(PyObject *, int, PyObject ***);
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static PyObject *update_star_args(int, int, PyObject *, PyObject ***);
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static PyObject *load_args(PyObject ***, int);
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#define CALL_FLAG_VAR 1
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#define CALL_FLAG_KW 2
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#ifdef LLTRACE
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static int prtrace(PyObject *, char *);
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#endif
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static void call_exc_trace(PyObject **, PyObject**, PyFrameObject *);
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static int call_trace(PyObject **, PyObject **,
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PyFrameObject *, char *, PyObject *);
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static PyObject *call_builtin(PyObject *, PyObject *, PyObject *);
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static PyObject *call_function(PyObject *, PyObject *, PyObject *);
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static PyObject *loop_subscript(PyObject *, PyObject *);
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static PyObject *apply_slice(PyObject *, PyObject *, PyObject *);
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static int assign_slice(PyObject *, PyObject *,
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@ -75,7 +89,6 @@ static long dxp[256];
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#endif
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#endif
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#ifdef WITH_THREAD
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#ifndef DONT_HAVE_ERRNO_H
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@ -320,8 +333,7 @@ PyEval_EvalCode(PyCodeObject *co, PyObject *globals, PyObject *locals)
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globals, locals,
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(PyObject **)NULL, 0,
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(PyObject **)NULL, 0,
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(PyObject **)NULL, 0,
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(PyObject *)NULL);
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(PyObject **)NULL, 0);
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}
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@ -330,15 +342,15 @@ PyEval_EvalCode(PyCodeObject *co, PyObject *globals, PyObject *locals)
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static PyObject *
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eval_code2(PyCodeObject *co, PyObject *globals, PyObject *locals,
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PyObject **args, int argcount, PyObject **kws, int kwcount,
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PyObject **defs, int defcount, PyObject *owner)
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PyObject **defs, int defcount)
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{
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#ifdef DXPAIRS
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int lastopcode = 0;
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#endif
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PyObject **stack_pointer;
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register unsigned char *next_instr;
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register int opcode=0; /* Current opcode */
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register int oparg=0; /* Current opcode argument, if any */
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register PyObject **stack_pointer;
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register enum why_code why; /* Reason for block stack unwind */
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register int err; /* Error status -- nonzero if error */
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register PyObject *x; /* Result object -- NULL if error */
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@ -668,7 +680,7 @@ eval_code2(PyCodeObject *co, PyObject *globals, PyObject *locals,
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}
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#endif
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/* Main switch on opcode */
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switch (opcode) {
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/* BEWARE!
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@ -1797,6 +1809,60 @@ eval_code2(PyCodeObject *co, PyObject *globals, PyObject *locals,
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break;
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case CALL_FUNCTION:
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{
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int na = oparg & 0xff;
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int nk = (oparg>>8) & 0xff;
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int n = na + 2 * nk;
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PyObject **pfunc = stack_pointer - n - 1;
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PyObject *func = *pfunc;
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f->f_lasti = INSTR_OFFSET() - 3; /* For tracing */
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/* Always dispatch PyCFunction first, because
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these are presumed to be the most frequent
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callable object.
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*/
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if (PyCFunction_Check(func)) {
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if (PyCFunction_GET_FLAGS(func) == 0) {
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x = fast_cfunction(func,
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&stack_pointer, na);
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} else {
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x = do_call(func, &stack_pointer,
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na, nk);
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}
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} else {
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if (PyMethod_Check(func)
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&& PyMethod_GET_SELF(func) != NULL) {
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/* optimize access to bound methods */
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PyObject *self = PyMethod_GET_SELF(func);
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Py_INCREF(self);
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func = PyMethod_GET_FUNCTION(func);
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Py_INCREF(func);
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Py_DECREF(*pfunc);
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*pfunc = self;
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na++;
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n++;
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} else
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Py_INCREF(func);
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if (PyFunction_Check(func)) {
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x = fast_function(func, &stack_pointer,
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n, na, nk);
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} else {
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x = do_call(func, &stack_pointer,
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na, nk);
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}
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Py_DECREF(func);
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}
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while (stack_pointer > pfunc) {
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w = POP();
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Py_DECREF(w);
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}
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PUSH(x);
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if (x != NULL)
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continue;
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break;
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}
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case CALL_FUNCTION_VAR:
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case CALL_FUNCTION_KW:
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case CALL_FUNCTION_VAR_KW:
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@ -1804,187 +1870,38 @@ eval_code2(PyCodeObject *co, PyObject *globals, PyObject *locals,
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int na = oparg & 0xff;
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int nk = (oparg>>8) & 0xff;
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int flags = (opcode - CALL_FUNCTION) & 3;
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int n = na + 2*nk + (flags & 1) + ((flags >> 1) & 1);
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PyObject **pfunc = stack_pointer - n - 1;
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PyObject *func = *pfunc;
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PyObject *self = NULL;
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PyObject *class = NULL;
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int n = na + 2 * nk;
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PyObject **pfunc, *func;
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if (flags & CALL_FLAG_VAR)
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n++;
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if (flags & CALL_FLAG_KW)
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n++;
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pfunc = stack_pointer - n - 1;
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func = *pfunc;
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f->f_lasti = INSTR_OFFSET() - 3; /* For tracing */
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if (PyMethod_Check(func)) {
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self = PyMethod_Self(func);
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class = PyMethod_Class(func);
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func = PyMethod_Function(func);
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Py_INCREF(func);
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if (self != NULL) {
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if (PyMethod_Check(func)
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&& PyMethod_GET_SELF(func) != NULL) {
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PyObject *self = PyMethod_GET_SELF(func);
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Py_INCREF(self);
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func = PyMethod_GET_FUNCTION(func);
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Py_INCREF(func);
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Py_DECREF(*pfunc);
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*pfunc = self;
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na++;
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n++;
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}
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else if (!((flags & 1) && na == 0)) {
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/* Unbound methods must be called with an
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instance of the class (or a derived
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class) as first argument */
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if (na > 0 && (self = stack_pointer[-n]) != NULL
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&& PyInstance_Check(self)
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&& PyClass_IsSubclass((PyObject *)
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(((PyInstanceObject *)self)->in_class),
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class))
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/* Handy-dandy */ ;
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else {
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PyErr_SetString(PyExc_TypeError,
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"unbound method must be called with instance as first argument");
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x = NULL;
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break;
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}
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}
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}
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else
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Py_INCREF(func);
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if (PyFunction_Check(func) && flags == 0) {
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PyObject *co = PyFunction_GetCode(func);
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PyObject *globals = PyFunction_GetGlobals(func);
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PyObject *argdefs = PyFunction_GetDefaults(func);
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PyObject **d;
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int nd;
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if (argdefs != NULL) {
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d = &PyTuple_GET_ITEM(argdefs, 0);
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nd = ((PyTupleObject *)argdefs)->ob_size;
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}
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else {
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d = NULL;
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nd = 0;
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}
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x = eval_code2((PyCodeObject *)co, globals,
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(PyObject *)NULL, stack_pointer-n, na,
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stack_pointer-2*nk, nk, d, nd,
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class);
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}
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else {
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int nstar = 0;
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PyObject *callargs;
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PyObject *stararg = 0;
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PyObject *kwdict = NULL;
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if (flags & 2) {
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kwdict = POP();
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if (!PyDict_Check(kwdict)) {
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PyErr_SetString(PyExc_TypeError,
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"** argument must be a dictionary");
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goto extcall_fail;
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}
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}
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if (flags & 1) {
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stararg = POP();
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if (!PySequence_Check(stararg)) {
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PyErr_SetString(PyExc_TypeError,
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"* argument must be a sequence");
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goto extcall_fail;
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}
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/* Convert abstract sequence to concrete tuple */
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if (!PyTuple_Check(stararg)) {
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PyObject *t = NULL;
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t = PySequence_Tuple(stararg);
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if (t == NULL) {
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goto extcall_fail;
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}
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Py_DECREF(stararg);
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stararg = t;
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}
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nstar = PyTuple_GET_SIZE(stararg);
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if (nstar < 0) {
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goto extcall_fail;
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}
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if (class && self == NULL && na == 0) {
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/* * arg is first argument of method,
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so check it is isinstance of class */
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self = PyTuple_GET_ITEM(stararg, 0);
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if (!(PyInstance_Check(self) &&
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PyClass_IsSubclass((PyObject *)
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(((PyInstanceObject *)self)->in_class),
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class))) {
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PyErr_SetString(PyExc_TypeError,
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"unbound method must be called with instance as first argument");
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x = NULL;
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break;
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}
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}
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}
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if (nk > 0) {
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if (kwdict == NULL) {
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kwdict = PyDict_New();
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if (kwdict == NULL) {
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goto extcall_fail;
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}
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}
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else {
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PyObject *d = PyDict_Copy(kwdict);
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if (d == NULL) {
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goto extcall_fail;
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}
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Py_DECREF(kwdict);
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kwdict = d;
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}
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err = 0;
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while (--nk >= 0) {
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PyObject *value = POP();
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PyObject *key = POP();
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if (PyDict_GetItem(kwdict, key) != NULL) {
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err = 1;
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PyErr_Format(PyExc_TypeError,
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"keyword parameter '%.400s' "
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"redefined in function call",
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PyString_AsString(key));
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Py_DECREF(key);
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Py_DECREF(value);
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goto extcall_fail;
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}
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err = PyDict_SetItem(kwdict, key, value);
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Py_DECREF(key);
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Py_DECREF(value);
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if (err)
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break;
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}
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if (err) {
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extcall_fail:
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Py_XDECREF(kwdict);
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Py_XDECREF(stararg);
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Py_DECREF(func);
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x=NULL;
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break;
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}
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}
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callargs = PyTuple_New(na + nstar);
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if (callargs == NULL) {
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x = NULL;
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break;
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}
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if (stararg) {
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int i;
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for (i = 0; i < nstar; i++) {
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PyObject *a = PyTuple_GET_ITEM(stararg, i);
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Py_INCREF(a);
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PyTuple_SET_ITEM(callargs, na + i, a);
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}
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Py_DECREF(stararg);
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}
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while (--na >= 0) {
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w = POP();
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PyTuple_SET_ITEM(callargs, na, w);
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}
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x = PyEval_CallObjectWithKeywords(func,
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callargs,
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kwdict);
|
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Py_DECREF(callargs);
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Py_XDECREF(kwdict);
|
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}
|
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} else
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Py_INCREF(func);
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x = ext_do_call(func, &stack_pointer, flags, na, nk);
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Py_DECREF(func);
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|
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while (stack_pointer > pfunc) {
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w = POP();
|
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Py_DECREF(w);
|
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w = POP();
|
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Py_DECREF(w);
|
||||
}
|
||||
PUSH(x);
|
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if (x != NULL) continue;
|
||||
if (x != NULL)
|
||||
continue;
|
||||
break;
|
||||
}
|
||||
|
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|
|
@ -2614,8 +2531,7 @@ PyEval_CallObject(PyObject *func, PyObject *arg)
|
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PyObject *
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PyEval_CallObjectWithKeywords(PyObject *func, PyObject *arg, PyObject *kw)
|
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{
|
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ternaryfunc call;
|
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PyObject *result;
|
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PyObject *result;
|
||||
|
||||
if (arg == NULL)
|
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arg = PyTuple_New(0);
|
||||
|
|
@ -2634,15 +2550,48 @@ PyEval_CallObjectWithKeywords(PyObject *func, PyObject *arg, PyObject *kw)
|
|||
return NULL;
|
||||
}
|
||||
|
||||
if ((call = func->ob_type->tp_call) != NULL)
|
||||
result = (*call)(func, arg, kw);
|
||||
else if (PyMethod_Check(func) || PyFunction_Check(func))
|
||||
result = call_function(func, arg, kw);
|
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else
|
||||
result = call_builtin(func, arg, kw);
|
||||
|
||||
result = call_object(func, arg, kw);
|
||||
Py_DECREF(arg);
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
/* How often is each kind of object called? The answer depends on the
|
||||
program. An instrumented call_object() was used to run the Python
|
||||
regression test suite. The results were:
|
||||
4200000 PyCFunctions
|
||||
390000 fast_function() calls
|
||||
94000 other functions
|
||||
480000 all functions (sum of prev two)
|
||||
150000 methods
|
||||
100000 classes
|
||||
|
||||
Tests on other bodies of code show that PyCFunctions are still
|
||||
most common, but not by such a large margin.
|
||||
*/
|
||||
|
||||
static PyObject *
|
||||
call_object(PyObject *func, PyObject *arg, PyObject *kw)
|
||||
{
|
||||
ternaryfunc call;
|
||||
PyObject *result;
|
||||
|
||||
if (PyMethod_Check(func))
|
||||
result = call_method(func, arg, kw);
|
||||
else if (PyFunction_Check(func))
|
||||
result = call_eval_code2(func, arg, kw);
|
||||
else if (PyCFunction_Check(func))
|
||||
result = call_cfunction(func, arg, kw);
|
||||
else if (PyClass_Check(func))
|
||||
result = PyInstance_New(func, arg, kw);
|
||||
else if (PyInstance_Check(func))
|
||||
result = call_instance(func, arg, kw);
|
||||
else if ((call = func->ob_type->tp_call) != NULL)
|
||||
result = (*call)(func, arg, kw);
|
||||
else {
|
||||
PyErr_Format(PyExc_TypeError, "object is not callable: %s",
|
||||
PyString_AS_STRING(PyObject_Repr(func)));
|
||||
return NULL;
|
||||
}
|
||||
if (result == NULL && !PyErr_Occurred())
|
||||
PyErr_SetString(PyExc_SystemError,
|
||||
"NULL result without error in call_object");
|
||||
|
|
@ -2651,123 +2600,116 @@ PyEval_CallObjectWithKeywords(PyObject *func, PyObject *arg, PyObject *kw)
|
|||
}
|
||||
|
||||
static PyObject *
|
||||
call_builtin(PyObject *func, PyObject *arg, PyObject *kw)
|
||||
call_cfunction(PyObject *func, PyObject *arg, PyObject *kw)
|
||||
{
|
||||
if (PyCFunction_Check(func)) {
|
||||
PyCFunctionObject* f = (PyCFunctionObject*) func;
|
||||
PyCFunction meth = PyCFunction_GetFunction(func);
|
||||
PyObject *self = PyCFunction_GetSelf(func);
|
||||
int flags = PyCFunction_GetFlags(func);
|
||||
if (!(flags & METH_VARARGS)) {
|
||||
int size = PyTuple_Size(arg);
|
||||
if (size == 1)
|
||||
arg = PyTuple_GET_ITEM(arg, 0);
|
||||
else if (size == 0)
|
||||
arg = NULL;
|
||||
}
|
||||
if (flags & METH_KEYWORDS)
|
||||
return (*(PyCFunctionWithKeywords)meth)(self, arg, kw);
|
||||
if (kw != NULL && PyDict_Size(kw) != 0) {
|
||||
PyErr_Format(PyExc_TypeError,
|
||||
"%.200s() takes no keyword arguments",
|
||||
f->m_ml->ml_name);
|
||||
return NULL;
|
||||
PyCFunctionObject* f = (PyCFunctionObject*)func;
|
||||
PyCFunction meth = PyCFunction_GET_FUNCTION(func);
|
||||
PyObject *self = PyCFunction_GET_SELF(func);
|
||||
int flags = PyCFunction_GET_FLAGS(func);
|
||||
|
||||
if (flags & METH_KEYWORDS && kw == NULL) {
|
||||
static PyObject *dict = NULL;
|
||||
if (dict == NULL) {
|
||||
dict = PyDict_New();
|
||||
if (dict == NULL)
|
||||
return NULL;
|
||||
}
|
||||
kw = dict;
|
||||
Py_INCREF(dict);
|
||||
}
|
||||
if (flags & METH_VARARGS && kw == NULL) {
|
||||
return (*meth)(self, arg);
|
||||
}
|
||||
if (PyClass_Check(func)) {
|
||||
return PyInstance_New(func, arg, kw);
|
||||
if (flags & METH_KEYWORDS) {
|
||||
return (*(PyCFunctionWithKeywords)meth)(self, arg, kw);
|
||||
}
|
||||
if (PyInstance_Check(func)) {
|
||||
PyObject *res, *call = PyObject_GetAttrString(func, "__call__");
|
||||
if (call == NULL) {
|
||||
PyInstanceObject *inst = (PyInstanceObject*) func;
|
||||
PyErr_Clear();
|
||||
PyErr_Format(PyExc_AttributeError,
|
||||
"%.200s instance has no __call__ method",
|
||||
PyString_AsString(inst->in_class->cl_name));
|
||||
return NULL;
|
||||
}
|
||||
res = PyEval_CallObjectWithKeywords(call, arg, kw);
|
||||
Py_DECREF(call);
|
||||
return res;
|
||||
if (!(flags & METH_VARARGS)) {
|
||||
int size = PyTuple_GET_SIZE(arg);
|
||||
if (size == 1)
|
||||
arg = PyTuple_GET_ITEM(arg, 0);
|
||||
else if (size == 0)
|
||||
arg = NULL;
|
||||
return (*meth)(self, arg);
|
||||
}
|
||||
PyErr_Format(PyExc_TypeError, "call of non-function (type %.400s)",
|
||||
func->ob_type->tp_name);
|
||||
if (kw != NULL && PyDict_Size(kw) != 0) {
|
||||
PyErr_Format(PyExc_TypeError,
|
||||
"%.200s() takes no keyword arguments",
|
||||
f->m_ml->ml_name);
|
||||
return NULL;
|
||||
}
|
||||
/* should never get here ??? */
|
||||
PyErr_BadInternalCall();
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static PyObject *
|
||||
call_function(PyObject *func, PyObject *arg, PyObject *kw)
|
||||
call_instance(PyObject *func, PyObject *arg, PyObject *kw)
|
||||
{
|
||||
PyObject *class = NULL; /* == owner */
|
||||
PyObject *argdefs;
|
||||
PyObject **d, **k;
|
||||
int nk, nd;
|
||||
PyObject *result;
|
||||
|
||||
if (kw != NULL && !PyDict_Check(kw)) {
|
||||
PyErr_BadInternalCall();
|
||||
PyObject *res, *call = PyObject_GetAttrString(func, "__call__");
|
||||
if (call == NULL) {
|
||||
PyInstanceObject *inst = (PyInstanceObject*) func;
|
||||
PyErr_Clear();
|
||||
PyErr_Format(PyExc_AttributeError,
|
||||
"%.200s instance has no __call__ method",
|
||||
PyString_AsString(inst->in_class->cl_name));
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if (PyMethod_Check(func)) {
|
||||
PyObject *self = PyMethod_Self(func);
|
||||
class = PyMethod_Class(func);
|
||||
func = PyMethod_Function(func);
|
||||
if (self == NULL) {
|
||||
/* Unbound methods must be called with an instance of
|
||||
the class (or a derived class) as first argument */
|
||||
if (PyTuple_Size(arg) >= 1) {
|
||||
self = PyTuple_GET_ITEM(arg, 0);
|
||||
if (self != NULL &&
|
||||
PyInstance_Check(self) &&
|
||||
PyClass_IsSubclass((PyObject *)
|
||||
(((PyInstanceObject *)self)->in_class),
|
||||
class))
|
||||
/* Handy-dandy */ ;
|
||||
else
|
||||
self = NULL;
|
||||
}
|
||||
if (self == NULL) {
|
||||
PyErr_SetString(PyExc_TypeError,
|
||||
"unbound method must be called with instance as first argument");
|
||||
return NULL;
|
||||
}
|
||||
Py_INCREF(arg);
|
||||
}
|
||||
else {
|
||||
int argcount = PyTuple_Size(arg);
|
||||
PyObject *newarg = PyTuple_New(argcount + 1);
|
||||
int i;
|
||||
if (newarg == NULL)
|
||||
return NULL;
|
||||
Py_INCREF(self);
|
||||
PyTuple_SET_ITEM(newarg, 0, self);
|
||||
for (i = 0; i < argcount; i++) {
|
||||
PyObject *v = PyTuple_GET_ITEM(arg, i);
|
||||
Py_XINCREF(v);
|
||||
PyTuple_SET_ITEM(newarg, i+1, v);
|
||||
}
|
||||
arg = newarg;
|
||||
}
|
||||
if (!PyFunction_Check(func)) {
|
||||
result = PyEval_CallObjectWithKeywords(func, arg, kw);
|
||||
Py_DECREF(arg);
|
||||
return result;
|
||||
}
|
||||
}
|
||||
else {
|
||||
if (!PyFunction_Check(func)) {
|
||||
PyErr_Format(PyExc_TypeError,
|
||||
"call of non-function (type %.200s)",
|
||||
func->ob_type->tp_name);
|
||||
res = call_object(call, arg, kw);
|
||||
Py_DECREF(call);
|
||||
return res;
|
||||
}
|
||||
|
||||
static PyObject *
|
||||
call_method(PyObject *func, PyObject *arg, PyObject *kw)
|
||||
{
|
||||
PyObject *self = PyMethod_GET_SELF(func);
|
||||
PyObject *class = PyMethod_GET_CLASS(func);
|
||||
PyObject *result;
|
||||
|
||||
func = PyMethod_GET_FUNCTION(func);
|
||||
if (self == NULL) {
|
||||
/* Unbound methods must be called with an instance of
|
||||
the class (or a derived class) as first argument */
|
||||
if (PyTuple_Size(arg) >= 1)
|
||||
self = PyTuple_GET_ITEM(arg, 0);
|
||||
if (!(self != NULL && PyInstance_Check(self)
|
||||
&& PyClass_IsSubclass((PyObject *)
|
||||
(((PyInstanceObject *)self)->in_class),
|
||||
class))) {
|
||||
PyErr_SetString(PyExc_TypeError,
|
||||
"unbound method must be called with instance as first argument");
|
||||
return NULL;
|
||||
}
|
||||
Py_INCREF(arg);
|
||||
} else {
|
||||
int argcount = PyTuple_Size(arg);
|
||||
PyObject *newarg = PyTuple_New(argcount + 1);
|
||||
int i;
|
||||
if (newarg == NULL)
|
||||
return NULL;
|
||||
Py_INCREF(self);
|
||||
PyTuple_SET_ITEM(newarg, 0, self);
|
||||
for (i = 0; i < argcount; i++) {
|
||||
PyObject *v = PyTuple_GET_ITEM(arg, i);
|
||||
Py_XINCREF(v);
|
||||
PyTuple_SET_ITEM(newarg, i+1, v);
|
||||
}
|
||||
arg = newarg;
|
||||
}
|
||||
|
||||
argdefs = PyFunction_GetDefaults(func);
|
||||
result = call_object(func, arg, kw);
|
||||
Py_DECREF(arg);
|
||||
return result;
|
||||
}
|
||||
|
||||
static PyObject *
|
||||
call_eval_code2(PyObject *func, PyObject *arg, PyObject *kw)
|
||||
{
|
||||
PyObject *result;
|
||||
PyObject *argdefs;
|
||||
PyObject **d, **k;
|
||||
int nk, nd;
|
||||
|
||||
argdefs = PyFunction_GET_DEFAULTS(func);
|
||||
if (argdefs != NULL && PyTuple_Check(argdefs)) {
|
||||
d = &PyTuple_GET_ITEM((PyTupleObject *)argdefs, 0);
|
||||
nd = PyTuple_Size(argdefs);
|
||||
|
|
@ -2798,20 +2740,211 @@ call_function(PyObject *func, PyObject *arg, PyObject *kw)
|
|||
}
|
||||
|
||||
result = eval_code2(
|
||||
(PyCodeObject *)PyFunction_GetCode(func),
|
||||
PyFunction_GetGlobals(func), (PyObject *)NULL,
|
||||
(PyCodeObject *)PyFunction_GET_CODE(func),
|
||||
PyFunction_GET_GLOBALS(func), (PyObject *)NULL,
|
||||
&PyTuple_GET_ITEM(arg, 0), PyTuple_Size(arg),
|
||||
k, nk,
|
||||
d, nd,
|
||||
class);
|
||||
d, nd);
|
||||
|
||||
Py_DECREF(arg);
|
||||
if (k != NULL)
|
||||
PyMem_DEL(k);
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
#define EXT_POP(STACK_POINTER) (*--(STACK_POINTER))
|
||||
|
||||
/* The two fast_xxx() functions optimize calls for which no argument
|
||||
tuple is necessary; the objects are passed directly from the stack.
|
||||
fast_cfunction() is called for METH_OLDARGS functions.
|
||||
fast_function() is for functions with no special argument handling.
|
||||
*/
|
||||
|
||||
static PyObject *
|
||||
fast_cfunction(PyObject *func, PyObject ***pp_stack, int na)
|
||||
{
|
||||
PyCFunction meth = PyCFunction_GET_FUNCTION(func);
|
||||
PyObject *self = PyCFunction_GET_SELF(func);
|
||||
|
||||
if (na == 0)
|
||||
return (*meth)(self, NULL);
|
||||
else if (na == 1)
|
||||
return (*meth)(self, EXT_POP(*pp_stack));
|
||||
else {
|
||||
PyObject *args = load_args(pp_stack, na);
|
||||
PyObject *result = (*meth)(self, args);
|
||||
Py_DECREF(args);
|
||||
return result;
|
||||
}
|
||||
}
|
||||
|
||||
static PyObject *
|
||||
fast_function(PyObject *func, PyObject ***pp_stack, int n, int na, int nk)
|
||||
{
|
||||
PyObject *co = PyFunction_GET_CODE(func);
|
||||
PyObject *globals = PyFunction_GET_GLOBALS(func);
|
||||
PyObject *argdefs = PyFunction_GET_DEFAULTS(func);
|
||||
PyObject **d = NULL;
|
||||
int nd = 0;
|
||||
|
||||
if (argdefs != NULL) {
|
||||
d = &PyTuple_GET_ITEM(argdefs, 0);
|
||||
nd = ((PyTupleObject *)argdefs)->ob_size;
|
||||
}
|
||||
return eval_code2((PyCodeObject *)co, globals,
|
||||
(PyObject *)NULL, (*pp_stack)-n, na,
|
||||
(*pp_stack)-2*nk, nk, d, nd);
|
||||
}
|
||||
|
||||
static PyObject *
|
||||
update_keyword_args(PyObject *orig_kwdict, int nk, PyObject ***pp_stack)
|
||||
{
|
||||
PyObject *kwdict = NULL;
|
||||
if (orig_kwdict == NULL)
|
||||
kwdict = PyDict_New();
|
||||
else {
|
||||
kwdict = PyDict_Copy(orig_kwdict);
|
||||
Py_DECREF(orig_kwdict);
|
||||
}
|
||||
if (kwdict == NULL)
|
||||
return NULL;
|
||||
while (--nk >= 0) {
|
||||
int err;
|
||||
PyObject *value = EXT_POP(*pp_stack);
|
||||
PyObject *key = EXT_POP(*pp_stack);
|
||||
if (PyDict_GetItem(kwdict, key) != NULL) {
|
||||
PyErr_Format(PyExc_TypeError,
|
||||
"keyword parameter '%.400s' "
|
||||
"redefined in function call",
|
||||
PyString_AsString(key));
|
||||
Py_DECREF(key);
|
||||
Py_DECREF(value);
|
||||
Py_DECREF(kwdict);
|
||||
return NULL;
|
||||
}
|
||||
err = PyDict_SetItem(kwdict, key, value);
|
||||
Py_DECREF(key);
|
||||
Py_DECREF(value);
|
||||
if (err) {
|
||||
Py_DECREF(kwdict);
|
||||
return NULL;
|
||||
}
|
||||
}
|
||||
return kwdict;
|
||||
}
|
||||
|
||||
static PyObject *
|
||||
update_star_args(int nstack, int nstar, PyObject *stararg,
|
||||
PyObject ***pp_stack)
|
||||
{
|
||||
PyObject *callargs, *w;
|
||||
|
||||
callargs = PyTuple_New(nstack + nstar);
|
||||
if (callargs == NULL) {
|
||||
return NULL;
|
||||
}
|
||||
if (nstar) {
|
||||
int i;
|
||||
for (i = 0; i < nstar; i++) {
|
||||
PyObject *a = PyTuple_GET_ITEM(stararg, i);
|
||||
Py_INCREF(a);
|
||||
PyTuple_SET_ITEM(callargs, nstack + i, a);
|
||||
}
|
||||
}
|
||||
while (--nstack >= 0) {
|
||||
w = EXT_POP(*pp_stack);
|
||||
PyTuple_SET_ITEM(callargs, nstack, w);
|
||||
}
|
||||
return callargs;
|
||||
}
|
||||
|
||||
static PyObject *
|
||||
load_args(PyObject ***pp_stack, int na)
|
||||
{
|
||||
PyObject *args = PyTuple_New(na);
|
||||
PyObject *w;
|
||||
|
||||
if (args == NULL)
|
||||
return NULL;
|
||||
while (--na >= 0) {
|
||||
w = EXT_POP(*pp_stack);
|
||||
PyTuple_SET_ITEM(args, na, w);
|
||||
}
|
||||
return args;
|
||||
}
|
||||
|
||||
static PyObject *
|
||||
do_call(PyObject *func, PyObject ***pp_stack, int na, int nk)
|
||||
{
|
||||
PyObject *callargs = NULL;
|
||||
PyObject *kwdict = NULL;
|
||||
PyObject *result = NULL;
|
||||
|
||||
if (nk > 0) {
|
||||
kwdict = update_keyword_args(NULL, nk, pp_stack);
|
||||
if (kwdict == NULL)
|
||||
goto call_fail;
|
||||
}
|
||||
callargs = load_args(pp_stack, na);
|
||||
if (callargs == NULL)
|
||||
goto call_fail;
|
||||
result = call_object(func, callargs, kwdict);
|
||||
call_fail:
|
||||
Py_XDECREF(callargs);
|
||||
Py_XDECREF(kwdict);
|
||||
return result;
|
||||
}
|
||||
|
||||
static PyObject *
|
||||
ext_do_call(PyObject *func, PyObject ***pp_stack, int flags, int na, int nk)
|
||||
{
|
||||
int nstar = 0;
|
||||
PyObject *callargs = NULL;
|
||||
PyObject *stararg = NULL;
|
||||
PyObject *kwdict = NULL;
|
||||
PyObject *result = NULL;
|
||||
|
||||
if (flags & CALL_FLAG_KW) {
|
||||
kwdict = EXT_POP(*pp_stack);
|
||||
if (!(kwdict && PyDict_Check(kwdict))) {
|
||||
PyErr_SetString(PyExc_TypeError,
|
||||
"** argument must be a dictionary");
|
||||
goto ext_call_fail;
|
||||
}
|
||||
}
|
||||
if (flags & CALL_FLAG_VAR) {
|
||||
stararg = EXT_POP(*pp_stack);
|
||||
if (!PyTuple_Check(stararg)) {
|
||||
PyObject *t = NULL;
|
||||
t = PySequence_Tuple(stararg);
|
||||
if (t == NULL) {
|
||||
if (PyErr_ExceptionMatches(PyExc_TypeError)) {
|
||||
PyErr_SetString(PyExc_TypeError,
|
||||
"* argument must be a sequence");
|
||||
}
|
||||
goto ext_call_fail;
|
||||
}
|
||||
Py_DECREF(stararg);
|
||||
stararg = t;
|
||||
}
|
||||
nstar = PyTuple_GET_SIZE(stararg);
|
||||
}
|
||||
if (nk > 0) {
|
||||
kwdict = update_keyword_args(kwdict, nk, pp_stack);
|
||||
if (kwdict == NULL)
|
||||
goto ext_call_fail;
|
||||
}
|
||||
callargs = update_star_args(na, nstar, stararg, pp_stack);
|
||||
if (callargs == NULL)
|
||||
goto ext_call_fail;
|
||||
result = call_object(func, callargs, kwdict);
|
||||
ext_call_fail:
|
||||
Py_XDECREF(callargs);
|
||||
Py_XDECREF(kwdict);
|
||||
Py_XDECREF(stararg);
|
||||
return result;
|
||||
}
|
||||
|
||||
#define SLICE_ERROR_MSG \
|
||||
"standard sequence type does not support step size other than one"
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue