diff options
Diffstat (limited to 'Python/ceval.c')
| -rw-r--r-- | Python/ceval.c | 86 |
1 files changed, 49 insertions, 37 deletions
diff --git a/Python/ceval.c b/Python/ceval.c index 73a0624..dd6f6c4 100644 --- a/Python/ceval.c +++ b/Python/ceval.c @@ -28,8 +28,9 @@ typedef unsigned long long uint64; #if defined(__ppc__) /* <- Don't know if this is the correct symbol; this - section should work for GCC on any PowerPC platform, - irrespective of OS. POWER? Who knows :-) */ + section should work for GCC on any PowerPC + platform, irrespective of OS. + POWER? Who knows :-) */ #define READ_TIMESTAMP(var) ppc_getcounter(&var) @@ -93,7 +94,8 @@ static PyObject * call_function(PyObject ***, int); static PyObject * fast_function(PyObject *, PyObject ***, int, int, int); static PyObject * do_call(PyObject *, PyObject ***, int, int); static PyObject * ext_do_call(PyObject *, PyObject ***, int, int, int); -static PyObject * update_keyword_args(PyObject *, int, PyObject ***,PyObject *); +static PyObject * update_keyword_args(PyObject *, int, PyObject ***, + PyObject *); static PyObject * update_star_args(int, int, PyObject *, PyObject ***); static PyObject * load_args(PyObject ***, int); #define CALL_FLAG_VAR 1 @@ -509,7 +511,8 @@ PyEval_EvalCode(PyCodeObject *co, PyObject *globals, PyObject *locals) PyObject * PyEval_EvalFrame(PyFrameObject *f) { /* This is for backward compatibility with extension modules that - used this API; core interpreter code should call PyEval_EvalFrameEx() */ + used this API; core interpreter code should call + PyEval_EvalFrameEx() */ return PyEval_EvalFrameEx(f, 0); } @@ -519,7 +522,7 @@ PyEval_EvalFrameEx(PyFrameObject *f, int throwflag) #ifdef DXPAIRS int lastopcode = 0; #endif - register PyObject **stack_pointer; /* Next free slot in value stack */ + register PyObject **stack_pointer; /* Next free slot in value stack */ register unsigned char *next_instr; register int opcode; /* Current opcode */ register int oparg; /* Current opcode argument, if any */ @@ -610,10 +613,10 @@ PyEval_EvalFrameEx(PyFrameObject *f, int throwflag) #define JUMPBY(x) (next_instr += (x)) /* OpCode prediction macros - Some opcodes tend to come in pairs thus making it possible to predict - the second code when the first is run. For example, COMPARE_OP is often - followed by JUMP_IF_FALSE or JUMP_IF_TRUE. And, those opcodes are often - followed by a POP_TOP. + Some opcodes tend to come in pairs thus making it possible to + predict the second code when the first is run. For example, + COMPARE_OP is often followed by JUMP_IF_FALSE or JUMP_IF_TRUE. And, + those opcodes are often followed by a POP_TOP. Verifying the prediction costs a single high-speed test of register variable against a constant. If the pairing was good, then the @@ -660,11 +663,13 @@ PyEval_EvalFrameEx(PyFrameObject *f, int throwflag) #define PUSH(v) { (void)(BASIC_PUSH(v), \ lltrace && prtrace(TOP(), "push")); \ assert(STACK_LEVEL() <= co->co_stacksize); } -#define POP() ((void)(lltrace && prtrace(TOP(), "pop")), BASIC_POP()) +#define POP() ((void)(lltrace && prtrace(TOP(), "pop")), \ + BASIC_POP()) #define STACKADJ(n) { (void)(BASIC_STACKADJ(n), \ lltrace && prtrace(TOP(), "stackadj")); \ assert(STACK_LEVEL() <= co->co_stacksize); } -#define EXT_POP(STACK_POINTER) (lltrace && prtrace((STACK_POINTER)[-1], "ext_pop"), *--(STACK_POINTER)) +#define EXT_POP(STACK_POINTER) (lltrace && prtrace((STACK_POINTER)[-1], \ + "ext_pop"), *--(STACK_POINTER)) #else #define PUSH(v) BASIC_PUSH(v) #define POP() BASIC_POP() @@ -1568,7 +1573,8 @@ PyEval_EvalFrameEx(PyFrameObject *f, int throwflag) if ((x = f->f_locals) != NULL) { if ((err = PyObject_DelItem(x, w)) != 0) format_exc_check_arg(PyExc_NameError, - NAME_ERROR_MSG ,w); + NAME_ERROR_MSG, + w); break; } PyErr_Format(PyExc_SystemError, @@ -1579,8 +1585,10 @@ PyEval_EvalFrameEx(PyFrameObject *f, int throwflag) PREDICTED_WITH_ARG(UNPACK_SEQUENCE); case UNPACK_SEQUENCE: v = POP(); - if (PyTuple_CheckExact(v) && PyTuple_GET_SIZE(v) == oparg) { - PyObject **items = ((PyTupleObject *)v)->ob_item; + if (PyTuple_CheckExact(v) && + PyTuple_GET_SIZE(v) == oparg) { + PyObject **items = \ + ((PyTupleObject *)v)->ob_item; while (oparg--) { w = items[oparg]; Py_INCREF(w); @@ -1588,15 +1596,17 @@ PyEval_EvalFrameEx(PyFrameObject *f, int throwflag) } Py_DECREF(v); continue; - } else if (PyList_CheckExact(v) && PyList_GET_SIZE(v) == oparg) { - PyObject **items = ((PyListObject *)v)->ob_item; + } else if (PyList_CheckExact(v) && + PyList_GET_SIZE(v) == oparg) { + PyObject **items = \ + ((PyListObject *)v)->ob_item; while (oparg--) { w = items[oparg]; Py_INCREF(w); PUSH(w); } } else if (unpack_iterable(v, oparg, -1, - stack_pointer + oparg)) { + stack_pointer + oparg)) { stack_pointer += oparg; } else { /* unpack_iterable() raised an exception */ @@ -1669,7 +1679,8 @@ PyEval_EvalFrameEx(PyFrameObject *f, int throwflag) else { x = PyObject_GetItem(v, w); if (x == NULL && PyErr_Occurred()) { - if (!PyErr_ExceptionMatches(PyExc_KeyError)) + if (!PyErr_ExceptionMatches( + PyExc_KeyError)) break; PyErr_Clear(); } @@ -1681,7 +1692,7 @@ PyEval_EvalFrameEx(PyFrameObject *f, int throwflag) if (x == NULL) { format_exc_check_arg( PyExc_NameError, - NAME_ERROR_MSG ,w); + NAME_ERROR_MSG, w); break; } } @@ -1782,13 +1793,10 @@ PyEval_EvalFrameEx(PyFrameObject *f, int throwflag) UNBOUNDLOCAL_ERROR_MSG, v); } else { - v = PyTuple_GET_ITEM( - co->co_freevars, - oparg - PyTuple_GET_SIZE(co->co_cellvars)); - format_exc_check_arg( - PyExc_NameError, - UNBOUNDFREE_ERROR_MSG, - v); + v = PyTuple_GET_ITEM(co->co_freevars, oparg - + PyTuple_GET_SIZE(co->co_cellvars)); + format_exc_check_arg(PyExc_NameError, + UNBOUNDFREE_ERROR_MSG, v); } break; @@ -2046,7 +2054,8 @@ PyEval_EvalFrameEx(PyFrameObject *f, int throwflag) continue; } if (PyErr_Occurred()) { - if (!PyErr_ExceptionMatches(PyExc_StopIteration)) + if (!PyErr_ExceptionMatches( + PyExc_StopIteration)) break; PyErr_Clear(); } @@ -2072,9 +2081,10 @@ PyEval_EvalFrameEx(PyFrameObject *f, int throwflag) case SETUP_LOOP: case SETUP_EXCEPT: case SETUP_FINALLY: - /* NOTE: If you add any new block-setup opcodes that are - not try/except/finally handlers, you may need to - update the PyGen_NeedsFinalizing() function. */ + /* NOTE: If you add any new block-setup opcodes that + are not try/except/finally handlers, you may need + to update the PyGen_NeedsFinalizing() function. + */ PyFrame_BlockSetup(f, opcode, INSTR_OFFSET() + oparg, STACK_LEVEL()); @@ -3968,8 +3978,9 @@ string_concatenate(PyObject *v, PyObject *w, if (v->ob_refcnt == 2) { /* In the common case, there are 2 references to the value * stored in 'variable' when the += is performed: one on the - * value stack (in 'v') and one still stored in the 'variable'. - * We try to delete the variable now to reduce the refcnt to 1. + * value stack (in 'v') and one still stored in the + * 'variable'. We try to delete the variable now to reduce + * the refcnt to 1. */ switch (*next_instr) { case STORE_FAST: @@ -3982,7 +3993,8 @@ string_concatenate(PyObject *v, PyObject *w, } case STORE_DEREF: { - PyObject **freevars = f->f_localsplus + f->f_code->co_nlocals; + PyObject **freevars = (f->f_localsplus + + f->f_code->co_nlocals); PyObject *c = freevars[PEEKARG()]; if (PyCell_GET(c) == v) PyCell_Set(c, NULL); @@ -4010,10 +4022,10 @@ string_concatenate(PyObject *v, PyObject *w, */ if (_PyString_Resize(&v, new_len) != 0) { /* XXX if _PyString_Resize() fails, 'v' has been - * deallocated so it cannot be put back into 'variable'. - * The MemoryError is raised when there is no value in - * 'variable', which might (very remotely) be a cause - * of incompatibilities. + * deallocated so it cannot be put back into + * 'variable'. The MemoryError is raised when there + * is no value in 'variable', which might (very + * remotely) be a cause of incompatibilities. */ return NULL; } |