| /*********************************************************** |
| Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam, |
| The Netherlands. |
| |
| All Rights Reserved |
| |
| Permission to use, copy, modify, and distribute this software and its |
| documentation for any purpose and without fee is hereby granted, |
| provided that the above copyright notice appear in all copies and that |
| both that copyright notice and this permission notice appear in |
| supporting documentation, and that the names of Stichting Mathematisch |
| Centrum or CWI or Corporation for National Research Initiatives or |
| CNRI not be used in advertising or publicity pertaining to |
| distribution of the software without specific, written prior |
| permission. |
| |
| While CWI is the initial source for this software, a modified version |
| is made available by the Corporation for National Research Initiatives |
| (CNRI) at the Internet address ftp://ftp.python.org. |
| |
| STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH |
| REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF |
| MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH |
| CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL |
| DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| PERFORMANCE OF THIS SOFTWARE. |
| |
| ******************************************************************/ |
| |
| /* Execute compiled code */ |
| |
| /* XXX TO DO: |
| XXX how to pass arguments to call_trace? |
| XXX speed up searching for keywords by using a dictionary |
| XXX document it! |
| */ |
| |
| #include "Python.h" |
| |
| #include "compile.h" |
| #include "frameobject.h" |
| #include "eval.h" |
| #include "opcode.h" |
| |
| #include <ctype.h> |
| |
| #ifdef HAVE_LIMITS_H |
| #include <limits.h> |
| #else |
| #define INT_MAX 2147483647 |
| #endif |
| |
| /* Turn this on if your compiler chokes on the big switch: */ |
| /* #define CASE_TOO_BIG 1 */ |
| |
| #ifdef Py_DEBUG |
| /* For debugging the interpreter: */ |
| #define LLTRACE 1 /* Low-level trace feature */ |
| #define CHECKEXC 1 /* Double-check exception checking */ |
| #endif |
| |
| |
| /* Forward declarations */ |
| |
| static PyObject *eval_code2 Py_PROTO((PyCodeObject *, |
| PyObject *, PyObject *, |
| PyObject **, int, |
| PyObject **, int, |
| PyObject **, int, |
| PyObject *)); |
| #ifdef LLTRACE |
| static int prtrace Py_PROTO((PyObject *, char *)); |
| #endif |
| static void call_exc_trace Py_PROTO((PyObject **, PyObject**, |
| PyFrameObject *)); |
| static int call_trace Py_PROTO((PyObject **, PyObject **, |
| PyFrameObject *, char *, PyObject *)); |
| static PyObject *call_builtin Py_PROTO((PyObject *, PyObject *, PyObject *)); |
| static PyObject *call_function Py_PROTO((PyObject *, PyObject *, PyObject *)); |
| static PyObject *loop_subscript Py_PROTO((PyObject *, PyObject *)); |
| static int slice_index Py_PROTO((PyObject *, int *)); |
| static PyObject *apply_slice Py_PROTO((PyObject *, PyObject *, PyObject *)); |
| static int assign_slice Py_PROTO((PyObject *, PyObject *, |
| PyObject *, PyObject *)); |
| static PyObject *cmp_outcome Py_PROTO((int, PyObject *, PyObject *)); |
| static int import_from Py_PROTO((PyObject *, PyObject *, PyObject *)); |
| static PyObject *build_class Py_PROTO((PyObject *, PyObject *, PyObject *)); |
| static int exec_statement Py_PROTO((PyFrameObject *, |
| PyObject *, PyObject *, PyObject *)); |
| static PyObject *find_from_args Py_PROTO((PyFrameObject *, int)); |
| static void set_exc_info Py_PROTO((PyThreadState *, |
| PyObject *, PyObject *, PyObject *)); |
| static void reset_exc_info Py_PROTO((PyThreadState *)); |
| |
| |
| /* Dynamic execution profile */ |
| #ifdef DYNAMIC_EXECUTION_PROFILE |
| #ifdef DXPAIRS |
| static long dxpairs[257][256]; |
| #define dxp dxpairs[256] |
| #else |
| static long dxp[256]; |
| #endif |
| #endif |
| |
| |
| #ifdef WITH_THREAD |
| |
| #ifndef DONT_HAVE_ERRNO_H |
| #include <errno.h> |
| #endif |
| #include "pythread.h" |
| |
| extern int _PyThread_Started; /* Flag for Py_Exit */ |
| |
| static PyThread_type_lock interpreter_lock = 0; |
| static long main_thread = 0; |
| |
| void |
| PyEval_InitThreads() |
| { |
| if (interpreter_lock) |
| return; |
| _PyThread_Started = 1; |
| interpreter_lock = PyThread_allocate_lock(); |
| PyThread_acquire_lock(interpreter_lock, 1); |
| main_thread = PyThread_get_thread_ident(); |
| } |
| |
| void |
| PyEval_AcquireLock() |
| { |
| PyThread_acquire_lock(interpreter_lock, 1); |
| } |
| |
| void |
| PyEval_ReleaseLock() |
| { |
| PyThread_release_lock(interpreter_lock); |
| } |
| |
| void |
| PyEval_AcquireThread(tstate) |
| PyThreadState *tstate; |
| { |
| if (tstate == NULL) |
| Py_FatalError("PyEval_AcquireThread: NULL new thread state"); |
| PyThread_acquire_lock(interpreter_lock, 1); |
| if (PyThreadState_Swap(tstate) != NULL) |
| Py_FatalError( |
| "PyEval_AcquireThread: non-NULL old thread state"); |
| } |
| |
| void |
| PyEval_ReleaseThread(tstate) |
| PyThreadState *tstate; |
| { |
| if (tstate == NULL) |
| Py_FatalError("PyEval_ReleaseThread: NULL thread state"); |
| if (PyThreadState_Swap(NULL) != tstate) |
| Py_FatalError("PyEval_ReleaseThread: wrong thread state"); |
| PyThread_release_lock(interpreter_lock); |
| } |
| #endif |
| |
| /* Functions save_thread and restore_thread are always defined so |
| dynamically loaded modules needn't be compiled separately for use |
| with and without threads: */ |
| |
| PyThreadState * |
| PyEval_SaveThread() |
| { |
| PyThreadState *tstate = PyThreadState_Swap(NULL); |
| if (tstate == NULL) |
| Py_FatalError("PyEval_SaveThread: NULL tstate"); |
| #ifdef WITH_THREAD |
| if (interpreter_lock) |
| PyThread_release_lock(interpreter_lock); |
| #endif |
| return tstate; |
| } |
| |
| void |
| PyEval_RestoreThread(tstate) |
| PyThreadState *tstate; |
| { |
| if (tstate == NULL) |
| Py_FatalError("PyEval_RestoreThread: NULL tstate"); |
| #ifdef WITH_THREAD |
| if (interpreter_lock) { |
| int err = errno; |
| PyThread_acquire_lock(interpreter_lock, 1); |
| errno = err; |
| } |
| #endif |
| PyThreadState_Swap(tstate); |
| } |
| |
| |
| /* Mechanism whereby asynchronously executing callbacks (e.g. UNIX |
| signal handlers or Mac I/O completion routines) can schedule calls |
| to a function to be called synchronously. |
| The synchronous function is called with one void* argument. |
| It should return 0 for success or -1 for failure -- failure should |
| be accompanied by an exception. |
| |
| If registry succeeds, the registry function returns 0; if it fails |
| (e.g. due to too many pending calls) it returns -1 (without setting |
| an exception condition). |
| |
| Note that because registry may occur from within signal handlers, |
| or other asynchronous events, calling malloc() is unsafe! |
| |
| #ifdef WITH_THREAD |
| Any thread can schedule pending calls, but only the main thread |
| will execute them. |
| #endif |
| |
| XXX WARNING! ASYNCHRONOUSLY EXECUTING CODE! |
| There are two possible race conditions: |
| (1) nested asynchronous registry calls; |
| (2) registry calls made while pending calls are being processed. |
| While (1) is very unlikely, (2) is a real possibility. |
| The current code is safe against (2), but not against (1). |
| The safety against (2) is derived from the fact that only one |
| thread (the main thread) ever takes things out of the queue. |
| |
| XXX Darn! With the advent of thread state, we should have an array |
| of pending calls per thread in the thread state! Later... |
| */ |
| |
| #define NPENDINGCALLS 32 |
| static struct { |
| int (*func) Py_PROTO((ANY *)); |
| ANY *arg; |
| } pendingcalls[NPENDINGCALLS]; |
| static volatile int pendingfirst = 0; |
| static volatile int pendinglast = 0; |
| static volatile int things_to_do = 0; |
| |
| int |
| Py_AddPendingCall(func, arg) |
| int (*func) Py_PROTO((ANY *)); |
| ANY *arg; |
| { |
| static int busy = 0; |
| int i, j; |
| /* XXX Begin critical section */ |
| /* XXX If you want this to be safe against nested |
| XXX asynchronous calls, you'll have to work harder! */ |
| if (busy) |
| return -1; |
| busy = 1; |
| i = pendinglast; |
| j = (i + 1) % NPENDINGCALLS; |
| if (j == pendingfirst) |
| return -1; /* Queue full */ |
| pendingcalls[i].func = func; |
| pendingcalls[i].arg = arg; |
| pendinglast = j; |
| things_to_do = 1; /* Signal main loop */ |
| busy = 0; |
| /* XXX End critical section */ |
| return 0; |
| } |
| |
| int |
| Py_MakePendingCalls() |
| { |
| static int busy = 0; |
| #ifdef WITH_THREAD |
| if (main_thread && PyThread_get_thread_ident() != main_thread) |
| return 0; |
| #endif |
| if (busy) |
| return 0; |
| busy = 1; |
| things_to_do = 0; |
| for (;;) { |
| int i; |
| int (*func) Py_PROTO((ANY *)); |
| ANY *arg; |
| i = pendingfirst; |
| if (i == pendinglast) |
| break; /* Queue empty */ |
| func = pendingcalls[i].func; |
| arg = pendingcalls[i].arg; |
| pendingfirst = (i + 1) % NPENDINGCALLS; |
| if (func(arg) < 0) { |
| busy = 0; |
| things_to_do = 1; /* We're not done yet */ |
| return -1; |
| } |
| } |
| busy = 0; |
| return 0; |
| } |
| |
| |
| /* Status code for main loop (reason for stack unwind) */ |
| |
| enum why_code { |
| WHY_NOT, /* No error */ |
| WHY_EXCEPTION, /* Exception occurred */ |
| WHY_RERAISE, /* Exception re-raised by 'finally' */ |
| WHY_RETURN, /* 'return' statement */ |
| WHY_BREAK /* 'break' statement */ |
| }; |
| |
| static enum why_code do_raise Py_PROTO((PyObject *, PyObject *, PyObject *)); |
| static int unpack_sequence Py_PROTO((PyObject *, int, PyObject **)); |
| |
| |
| /* Backward compatible interface */ |
| |
| PyObject * |
| PyEval_EvalCode(co, globals, locals) |
| PyCodeObject *co; |
| PyObject *globals; |
| PyObject *locals; |
| { |
| return eval_code2(co, |
| globals, locals, |
| (PyObject **)NULL, 0, |
| (PyObject **)NULL, 0, |
| (PyObject **)NULL, 0, |
| (PyObject *)NULL); |
| } |
| |
| |
| /* Interpreter main loop */ |
| |
| #ifndef MAX_RECURSION_DEPTH |
| #define MAX_RECURSION_DEPTH 10000 |
| #endif |
| |
| static PyObject * |
| eval_code2(co, globals, locals, |
| args, argcount, kws, kwcount, defs, defcount, owner) |
| PyCodeObject *co; |
| PyObject *globals; |
| PyObject *locals; |
| PyObject **args; |
| int argcount; |
| PyObject **kws; /* length: 2*kwcount */ |
| int kwcount; |
| PyObject **defs; |
| int defcount; |
| PyObject *owner; |
| { |
| #ifdef DXPAIRS |
| int lastopcode = 0; |
| #endif |
| register unsigned char *next_instr; |
| register int opcode; /* Current opcode */ |
| register int oparg; /* Current opcode argument, if any */ |
| register PyObject **stack_pointer; |
| register enum why_code why; /* Reason for block stack unwind */ |
| register int err; /* Error status -- nonzero if error */ |
| register PyObject *x; /* Result object -- NULL if error */ |
| register PyObject *v; /* Temporary objects popped off stack */ |
| register PyObject *w; |
| register PyObject *u; |
| register PyObject *t; |
| register PyFrameObject *f; /* Current frame */ |
| register PyObject **fastlocals; |
| PyObject *retval = NULL; /* Return value */ |
| PyThreadState *tstate = PyThreadState_GET(); |
| unsigned char *first_instr; |
| #ifdef LLTRACE |
| int lltrace; |
| #endif |
| #if defined(Py_DEBUG) || defined(LLTRACE) |
| /* Make it easier to find out where we are with a debugger */ |
| char *filename = PyString_AsString(co->co_filename); |
| #endif |
| |
| /* Code access macros */ |
| |
| #define GETCONST(i) Getconst(f, i) |
| #define GETNAME(i) Getname(f, i) |
| #define GETNAMEV(i) Getnamev(f, i) |
| #define INSTR_OFFSET() (next_instr - first_instr) |
| #define NEXTOP() (*next_instr++) |
| #define NEXTARG() (next_instr += 2, (next_instr[-1]<<8) + next_instr[-2]) |
| #define JUMPTO(x) (next_instr = first_instr + (x)) |
| #define JUMPBY(x) (next_instr += (x)) |
| |
| /* Stack manipulation macros */ |
| |
| #define STACK_LEVEL() (stack_pointer - f->f_valuestack) |
| #define EMPTY() (STACK_LEVEL() == 0) |
| #define TOP() (stack_pointer[-1]) |
| #define BASIC_PUSH(v) (*stack_pointer++ = (v)) |
| #define BASIC_POP() (*--stack_pointer) |
| |
| #ifdef LLTRACE |
| #define PUSH(v) (BASIC_PUSH(v), lltrace && prtrace(TOP(), "push")) |
| #define POP() (lltrace && prtrace(TOP(), "pop"), BASIC_POP()) |
| #else |
| #define PUSH(v) BASIC_PUSH(v) |
| #define POP() BASIC_POP() |
| #endif |
| |
| /* Local variable macros */ |
| |
| #define GETLOCAL(i) (fastlocals[i]) |
| #define SETLOCAL(i, value) do { Py_XDECREF(GETLOCAL(i)); \ |
| GETLOCAL(i) = value; } while (0) |
| |
| /* Start of code */ |
| |
| #ifdef USE_STACKCHECK |
| if (tstate->recursion_depth%10 == 0 && PyOS_CheckStack()) { |
| PyErr_SetString(PyExc_MemoryError, "Stack overflow"); |
| return NULL; |
| } |
| #endif |
| |
| if (globals == NULL) { |
| PyErr_SetString(PyExc_SystemError, "eval_code2: NULL globals"); |
| return NULL; |
| } |
| |
| #ifdef LLTRACE |
| lltrace = PyDict_GetItemString(globals, "__lltrace__") != NULL; |
| #endif |
| |
| f = PyFrame_New( |
| tstate, /*back*/ |
| co, /*code*/ |
| globals, /*globals*/ |
| locals); /*locals*/ |
| if (f == NULL) |
| return NULL; |
| |
| tstate->frame = f; |
| fastlocals = f->f_localsplus; |
| |
| if (co->co_argcount > 0 || |
| co->co_flags & (CO_VARARGS | CO_VARKEYWORDS)) { |
| int i; |
| int n = argcount; |
| PyObject *kwdict = NULL; |
| if (co->co_flags & CO_VARKEYWORDS) { |
| kwdict = PyDict_New(); |
| if (kwdict == NULL) |
| goto fail; |
| i = co->co_argcount; |
| if (co->co_flags & CO_VARARGS) |
| i++; |
| SETLOCAL(i, kwdict); |
| } |
| if (argcount > co->co_argcount) { |
| if (!(co->co_flags & CO_VARARGS)) { |
| PyErr_Format(PyExc_TypeError, |
| "too many arguments; expected %d, got %d", |
| co->co_argcount, argcount); |
| goto fail; |
| } |
| n = co->co_argcount; |
| } |
| for (i = 0; i < n; i++) { |
| x = args[i]; |
| Py_INCREF(x); |
| SETLOCAL(i, x); |
| } |
| if (co->co_flags & CO_VARARGS) { |
| u = PyTuple_New(argcount - n); |
| if (u == NULL) |
| goto fail; |
| SETLOCAL(co->co_argcount, u); |
| for (i = n; i < argcount; i++) { |
| x = args[i]; |
| Py_INCREF(x); |
| PyTuple_SET_ITEM(u, i-n, x); |
| } |
| } |
| for (i = 0; i < kwcount; i++) { |
| PyObject *keyword = kws[2*i]; |
| PyObject *value = kws[2*i + 1]; |
| int j; |
| /* XXX slow -- speed up using dictionary? */ |
| for (j = 0; j < co->co_argcount; j++) { |
| PyObject *nm = PyTuple_GET_ITEM( |
| co->co_varnames, j); |
| if (PyObject_Compare(keyword, nm) == 0) |
| break; |
| } |
| /* Check errors from Compare */ |
| if (PyErr_Occurred()) |
| goto fail; |
| if (j >= co->co_argcount) { |
| if (kwdict == NULL) { |
| PyErr_Format(PyExc_TypeError, |
| "unexpected keyword argument: %.400s", |
| PyString_AsString(keyword)); |
| goto fail; |
| } |
| PyDict_SetItem(kwdict, keyword, value); |
| } |
| else { |
| if (GETLOCAL(j) != NULL) { |
| PyErr_SetString(PyExc_TypeError, |
| "keyword parameter redefined"); |
| goto fail; |
| } |
| Py_INCREF(value); |
| SETLOCAL(j, value); |
| } |
| } |
| if (argcount < co->co_argcount) { |
| int m = co->co_argcount - defcount; |
| for (i = argcount; i < m; i++) { |
| if (GETLOCAL(i) == NULL) { |
| PyErr_Format(PyExc_TypeError, |
| "not enough arguments; expected %d, got %d", |
| m, i); |
| goto fail; |
| } |
| } |
| if (n > m) |
| i = n - m; |
| else |
| i = 0; |
| for (; i < defcount; i++) { |
| if (GETLOCAL(m+i) == NULL) { |
| PyObject *def = defs[i]; |
| Py_INCREF(def); |
| SETLOCAL(m+i, def); |
| } |
| } |
| } |
| } |
| else { |
| if (argcount > 0 || kwcount > 0) { |
| PyErr_SetString(PyExc_TypeError, |
| "no arguments expected"); |
| goto fail; |
| } |
| } |
| |
| if (tstate->sys_tracefunc != NULL) { |
| /* tstate->sys_tracefunc, if defined, is a function that |
| will be called on *every* entry to a code block. |
| Its return value, if not None, is a function that |
| will be called at the start of each executed line |
| of code. (Actually, the function must return |
| itself in order to continue tracing.) |
| The trace functions are called with three arguments: |
| a pointer to the current frame, a string indicating |
| why the function is called, and an argument which |
| depends on the situation. The global trace function |
| (sys.trace) is also called whenever an exception |
| is detected. */ |
| if (call_trace(&tstate->sys_tracefunc, |
| &f->f_trace, f, "call", |
| Py_None/*XXX how to compute arguments now?*/)) { |
| /* Trace function raised an error */ |
| goto fail; |
| } |
| } |
| |
| if (tstate->sys_profilefunc != NULL) { |
| /* Similar for sys_profilefunc, except it needn't return |
| itself and isn't called for "line" events */ |
| if (call_trace(&tstate->sys_profilefunc, |
| (PyObject**)0, f, "call", |
| Py_None/*XXX*/)) { |
| goto fail; |
| } |
| } |
| |
| if (++tstate->recursion_depth > MAX_RECURSION_DEPTH) { |
| --tstate->recursion_depth; |
| PyErr_SetString(PyExc_RuntimeError, |
| "Maximum recursion depth exceeded"); |
| tstate->frame = f->f_back; |
| Py_DECREF(f); |
| return NULL; |
| } |
| |
| _PyCode_GETCODEPTR(co, &first_instr); |
| next_instr = first_instr; |
| stack_pointer = f->f_valuestack; |
| |
| why = WHY_NOT; |
| err = 0; |
| x = Py_None; /* Not a reference, just anything non-NULL */ |
| |
| for (;;) { |
| /* Do periodic things. Doing this every time through |
| the loop would add too much overhead, so we do it |
| only every Nth instruction. We also do it if |
| ``things_to_do'' is set, i.e. when an asynchronous |
| event needs attention (e.g. a signal handler or |
| async I/O handler); see Py_AddPendingCall() and |
| Py_MakePendingCalls() above. */ |
| |
| if (things_to_do || --tstate->ticker < 0) { |
| tstate->ticker = tstate->interp->checkinterval; |
| if (things_to_do) { |
| if (Py_MakePendingCalls() < 0) { |
| why = WHY_EXCEPTION; |
| goto on_error; |
| } |
| } |
| #if !defined(HAVE_SIGNAL_H) || defined(macintosh) |
| /* If we have true signals, the signal handler |
| will call Py_AddPendingCall() so we don't |
| have to call sigcheck(). On the Mac and |
| DOS, alas, we have to call it. */ |
| if (PyErr_CheckSignals()) { |
| why = WHY_EXCEPTION; |
| goto on_error; |
| } |
| #endif |
| |
| #ifdef WITH_THREAD |
| if (interpreter_lock) { |
| /* Give another thread a chance */ |
| |
| if (PyThreadState_Swap(NULL) != tstate) |
| Py_FatalError("ceval: tstate mix-up"); |
| PyThread_release_lock(interpreter_lock); |
| |
| /* Other threads may run now */ |
| |
| PyThread_acquire_lock(interpreter_lock, 1); |
| if (PyThreadState_Swap(tstate) != NULL) |
| Py_FatalError("ceval: orphan tstate"); |
| } |
| #endif |
| } |
| |
| /* Extract opcode and argument */ |
| |
| #if defined(Py_DEBUG) || defined(LLTRACE) |
| f->f_lasti = INSTR_OFFSET(); |
| #endif |
| |
| opcode = NEXTOP(); |
| if (HAS_ARG(opcode)) |
| oparg = NEXTARG(); |
| #ifdef DYNAMIC_EXECUTION_PROFILE |
| #ifdef DXPAIRS |
| dxpairs[lastopcode][opcode]++; |
| lastopcode = opcode; |
| #endif |
| dxp[opcode]++; |
| #endif |
| |
| #ifdef LLTRACE |
| /* Instruction tracing */ |
| |
| if (lltrace) { |
| if (HAS_ARG(opcode)) { |
| printf("%d: %d, %d\n", |
| (int) (INSTR_OFFSET() - 3), |
| opcode, oparg); |
| } |
| else { |
| printf("%d: %d\n", |
| (int) (INSTR_OFFSET() - 1), opcode); |
| } |
| } |
| #endif |
| |
| /* Main switch on opcode */ |
| |
| switch (opcode) { |
| |
| /* BEWARE! |
| It is essential that any operation that fails sets either |
| x to NULL, err to nonzero, or why to anything but WHY_NOT, |
| and that no operation that succeeds does this! */ |
| |
| /* case STOP_CODE: this is an error! */ |
| |
| case POP_TOP: |
| v = POP(); |
| Py_DECREF(v); |
| continue; |
| |
| case ROT_TWO: |
| v = POP(); |
| w = POP(); |
| PUSH(v); |
| PUSH(w); |
| continue; |
| |
| case ROT_THREE: |
| v = POP(); |
| w = POP(); |
| x = POP(); |
| PUSH(v); |
| PUSH(x); |
| PUSH(w); |
| continue; |
| |
| case DUP_TOP: |
| v = TOP(); |
| Py_INCREF(v); |
| PUSH(v); |
| continue; |
| |
| case UNARY_POSITIVE: |
| v = POP(); |
| x = PyNumber_Positive(v); |
| Py_DECREF(v); |
| PUSH(x); |
| if (x != NULL) continue; |
| break; |
| |
| case UNARY_NEGATIVE: |
| v = POP(); |
| x = PyNumber_Negative(v); |
| Py_DECREF(v); |
| PUSH(x); |
| if (x != NULL) continue; |
| break; |
| |
| case UNARY_NOT: |
| v = POP(); |
| err = PyObject_IsTrue(v); |
| Py_DECREF(v); |
| if (err == 0) { |
| Py_INCREF(Py_True); |
| PUSH(Py_True); |
| continue; |
| } |
| else if (err > 0) { |
| Py_INCREF(Py_False); |
| PUSH(Py_False); |
| err = 0; |
| continue; |
| } |
| break; |
| |
| case UNARY_CONVERT: |
| v = POP(); |
| x = PyObject_Repr(v); |
| Py_DECREF(v); |
| PUSH(x); |
| if (x != NULL) continue; |
| break; |
| |
| case UNARY_INVERT: |
| v = POP(); |
| x = PyNumber_Invert(v); |
| Py_DECREF(v); |
| PUSH(x); |
| if (x != NULL) continue; |
| break; |
| |
| case BINARY_POWER: |
| w = POP(); |
| v = POP(); |
| x = PyNumber_Power(v, w, Py_None); |
| Py_DECREF(v); |
| Py_DECREF(w); |
| PUSH(x); |
| if (x != NULL) continue; |
| break; |
| |
| case BINARY_MULTIPLY: |
| w = POP(); |
| v = POP(); |
| x = PyNumber_Multiply(v, w); |
| Py_DECREF(v); |
| Py_DECREF(w); |
| PUSH(x); |
| if (x != NULL) continue; |
| break; |
| |
| case BINARY_DIVIDE: |
| w = POP(); |
| v = POP(); |
| x = PyNumber_Divide(v, w); |
| Py_DECREF(v); |
| Py_DECREF(w); |
| PUSH(x); |
| if (x != NULL) continue; |
| break; |
| |
| case BINARY_MODULO: |
| w = POP(); |
| v = POP(); |
| x = PyNumber_Remainder(v, w); |
| Py_DECREF(v); |
| Py_DECREF(w); |
| PUSH(x); |
| if (x != NULL) continue; |
| break; |
| |
| case BINARY_ADD: |
| w = POP(); |
| v = POP(); |
| if (PyInt_Check(v) && PyInt_Check(w)) { |
| /* INLINE: int + int */ |
| register long a, b, i; |
| a = PyInt_AS_LONG(v); |
| b = PyInt_AS_LONG(w); |
| i = a + b; |
| if ((i^a) < 0 && (i^b) < 0) { |
| PyErr_SetString(PyExc_OverflowError, |
| "integer addition"); |
| x = NULL; |
| } |
| else |
| x = PyInt_FromLong(i); |
| } |
| else |
| x = PyNumber_Add(v, w); |
| Py_DECREF(v); |
| Py_DECREF(w); |
| PUSH(x); |
| if (x != NULL) continue; |
| break; |
| |
| case BINARY_SUBTRACT: |
| w = POP(); |
| v = POP(); |
| if (PyInt_Check(v) && PyInt_Check(w)) { |
| /* INLINE: int - int */ |
| register long a, b, i; |
| a = PyInt_AS_LONG(v); |
| b = PyInt_AS_LONG(w); |
| i = a - b; |
| if ((i^a) < 0 && (i^~b) < 0) { |
| PyErr_SetString(PyExc_OverflowError, |
| "integer subtraction"); |
| x = NULL; |
| } |
| else |
| x = PyInt_FromLong(i); |
| } |
| else |
| x = PyNumber_Subtract(v, w); |
| Py_DECREF(v); |
| Py_DECREF(w); |
| PUSH(x); |
| if (x != NULL) continue; |
| break; |
| |
| case BINARY_SUBSCR: |
| w = POP(); |
| v = POP(); |
| if (PyList_Check(v) && PyInt_Check(w)) { |
| /* INLINE: list[int] */ |
| long i = PyInt_AsLong(w); |
| if (i < 0) |
| i += PyList_GET_SIZE(v); |
| if (i < 0 || |
| i >= PyList_GET_SIZE(v)) { |
| PyErr_SetString(PyExc_IndexError, |
| "list index out of range"); |
| x = NULL; |
| } |
| else { |
| x = PyList_GET_ITEM(v, i); |
| Py_INCREF(x); |
| } |
| } |
| else |
| x = PyObject_GetItem(v, w); |
| Py_DECREF(v); |
| Py_DECREF(w); |
| PUSH(x); |
| if (x != NULL) continue; |
| break; |
| |
| case BINARY_LSHIFT: |
| w = POP(); |
| v = POP(); |
| x = PyNumber_Lshift(v, w); |
| Py_DECREF(v); |
| Py_DECREF(w); |
| PUSH(x); |
| if (x != NULL) continue; |
| break; |
| |
| case BINARY_RSHIFT: |
| w = POP(); |
| v = POP(); |
| x = PyNumber_Rshift(v, w); |
| Py_DECREF(v); |
| Py_DECREF(w); |
| PUSH(x); |
| if (x != NULL) continue; |
| break; |
| |
| case BINARY_AND: |
| w = POP(); |
| v = POP(); |
| x = PyNumber_And(v, w); |
| Py_DECREF(v); |
| Py_DECREF(w); |
| PUSH(x); |
| if (x != NULL) continue; |
| break; |
| |
| case BINARY_XOR: |
| w = POP(); |
| v = POP(); |
| x = PyNumber_Xor(v, w); |
| Py_DECREF(v); |
| Py_DECREF(w); |
| PUSH(x); |
| if (x != NULL) continue; |
| break; |
| |
| case BINARY_OR: |
| w = POP(); |
| v = POP(); |
| x = PyNumber_Or(v, w); |
| Py_DECREF(v); |
| Py_DECREF(w); |
| PUSH(x); |
| if (x != NULL) continue; |
| break; |
| |
| case SLICE+0: |
| case SLICE+1: |
| case SLICE+2: |
| case SLICE+3: |
| if ((opcode-SLICE) & 2) |
| w = POP(); |
| else |
| w = NULL; |
| if ((opcode-SLICE) & 1) |
| v = POP(); |
| else |
| v = NULL; |
| u = POP(); |
| x = apply_slice(u, v, w); |
| Py_DECREF(u); |
| Py_XDECREF(v); |
| Py_XDECREF(w); |
| PUSH(x); |
| if (x != NULL) continue; |
| break; |
| |
| case STORE_SLICE+0: |
| case STORE_SLICE+1: |
| case STORE_SLICE+2: |
| case STORE_SLICE+3: |
| if ((opcode-STORE_SLICE) & 2) |
| w = POP(); |
| else |
| w = NULL; |
| if ((opcode-STORE_SLICE) & 1) |
| v = POP(); |
| else |
| v = NULL; |
| u = POP(); |
| t = POP(); |
| err = assign_slice(u, v, w, t); /* u[v:w] = t */ |
| Py_DECREF(t); |
| Py_DECREF(u); |
| Py_XDECREF(v); |
| Py_XDECREF(w); |
| if (err == 0) continue; |
| break; |
| |
| case DELETE_SLICE+0: |
| case DELETE_SLICE+1: |
| case DELETE_SLICE+2: |
| case DELETE_SLICE+3: |
| if ((opcode-DELETE_SLICE) & 2) |
| w = POP(); |
| else |
| w = NULL; |
| if ((opcode-DELETE_SLICE) & 1) |
| v = POP(); |
| else |
| v = NULL; |
| u = POP(); |
| err = assign_slice(u, v, w, (PyObject *)NULL); |
| /* del u[v:w] */ |
| Py_DECREF(u); |
| Py_XDECREF(v); |
| Py_XDECREF(w); |
| if (err == 0) continue; |
| break; |
| |
| case STORE_SUBSCR: |
| w = POP(); |
| v = POP(); |
| u = POP(); |
| /* v[w] = u */ |
| err = PyObject_SetItem(v, w, u); |
| Py_DECREF(u); |
| Py_DECREF(v); |
| Py_DECREF(w); |
| if (err == 0) continue; |
| break; |
| |
| case DELETE_SUBSCR: |
| w = POP(); |
| v = POP(); |
| /* del v[w] */ |
| err = PyObject_DelItem(v, w); |
| Py_DECREF(v); |
| Py_DECREF(w); |
| if (err == 0) continue; |
| break; |
| |
| case PRINT_EXPR: |
| v = POP(); |
| /* Print value except if None */ |
| /* After printing, also assign to '_' */ |
| /* Before, set '_' to None to avoid recursion */ |
| if (v != Py_None && |
| (err = PyDict_SetItemString( |
| f->f_builtins, "_", Py_None)) == 0) { |
| err = Py_FlushLine(); |
| if (err == 0) { |
| x = PySys_GetObject("stdout"); |
| if (x == NULL) { |
| PyErr_SetString( |
| PyExc_RuntimeError, |
| "lost sys.stdout"); |
| err = -1; |
| } |
| } |
| if (err == 0) |
| err = PyFile_WriteObject(v, x, 0); |
| if (err == 0) { |
| PyFile_SoftSpace(x, 1); |
| err = Py_FlushLine(); |
| } |
| if (err == 0) { |
| err = PyDict_SetItemString( |
| f->f_builtins, "_", v); |
| } |
| } |
| Py_DECREF(v); |
| break; |
| |
| case PRINT_ITEM: |
| v = POP(); |
| w = PySys_GetObject("stdout"); |
| if (w == NULL) { |
| PyErr_SetString(PyExc_RuntimeError, |
| "lost sys.stdout"); |
| err = -1; |
| } |
| else if (PyFile_SoftSpace(w, 1)) |
| err = PyFile_WriteString(" ", w); |
| if (err == 0) |
| err = PyFile_WriteObject(v, w, Py_PRINT_RAW); |
| if (err == 0 && PyString_Check(v)) { |
| /* XXX move into writeobject() ? */ |
| char *s = PyString_AsString(v); |
| int len = PyString_Size(v); |
| if (len > 0 && |
| isspace(Py_CHARMASK(s[len-1])) && |
| s[len-1] != ' ') |
| PyFile_SoftSpace(w, 0); |
| } |
| Py_DECREF(v); |
| if (err == 0) continue; |
| break; |
| |
| case PRINT_NEWLINE: |
| x = PySys_GetObject("stdout"); |
| if (x == NULL) |
| PyErr_SetString(PyExc_RuntimeError, |
| "lost sys.stdout"); |
| else { |
| err = PyFile_WriteString("\n", x); |
| if (err == 0) |
| PyFile_SoftSpace(x, 0); |
| } |
| break; |
| |
| case BREAK_LOOP: |
| why = WHY_BREAK; |
| break; |
| |
| case RAISE_VARARGS: |
| u = v = w = NULL; |
| switch (oparg) { |
| case 3: |
| u = POP(); /* traceback */ |
| /* Fallthrough */ |
| case 2: |
| v = POP(); /* value */ |
| /* Fallthrough */ |
| case 1: |
| w = POP(); /* exc */ |
| case 0: /* Fallthrough */ |
| why = do_raise(w, v, u); |
| break; |
| default: |
| PyErr_SetString(PyExc_SystemError, |
| "bad RAISE_VARARGS oparg"); |
| why = WHY_EXCEPTION; |
| break; |
| } |
| break; |
| |
| case LOAD_LOCALS: |
| if ((x = f->f_locals) == NULL) { |
| PyErr_SetString(PyExc_SystemError, |
| "no locals"); |
| break; |
| } |
| Py_INCREF(x); |
| PUSH(x); |
| break; |
| |
| case RETURN_VALUE: |
| retval = POP(); |
| why = WHY_RETURN; |
| break; |
| |
| case EXEC_STMT: |
| w = POP(); |
| v = POP(); |
| u = POP(); |
| err = exec_statement(f, u, v, w); |
| Py_DECREF(u); |
| Py_DECREF(v); |
| Py_DECREF(w); |
| break; |
| |
| case POP_BLOCK: |
| { |
| PyTryBlock *b = PyFrame_BlockPop(f); |
| while (STACK_LEVEL() > b->b_level) { |
| v = POP(); |
| Py_DECREF(v); |
| } |
| } |
| break; |
| |
| case END_FINALLY: |
| v = POP(); |
| if (PyInt_Check(v)) { |
| why = (enum why_code) PyInt_AsLong(v); |
| if (why == WHY_RETURN) |
| retval = POP(); |
| } |
| else if (PyString_Check(v) || PyClass_Check(v)) { |
| w = POP(); |
| u = POP(); |
| PyErr_Restore(v, w, u); |
| why = WHY_RERAISE; |
| break; |
| } |
| else if (v != Py_None) { |
| PyErr_SetString(PyExc_SystemError, |
| "'finally' pops bad exception"); |
| why = WHY_EXCEPTION; |
| } |
| Py_DECREF(v); |
| break; |
| |
| case BUILD_CLASS: |
| u = POP(); |
| v = POP(); |
| w = POP(); |
| x = build_class(u, v, w); |
| PUSH(x); |
| Py_DECREF(u); |
| Py_DECREF(v); |
| Py_DECREF(w); |
| break; |
| |
| case STORE_NAME: |
| w = GETNAMEV(oparg); |
| v = POP(); |
| if ((x = f->f_locals) == NULL) { |
| PyErr_SetString(PyExc_SystemError, |
| "no locals"); |
| break; |
| } |
| err = PyDict_SetItem(x, w, v); |
| Py_DECREF(v); |
| break; |
| |
| case DELETE_NAME: |
| w = GETNAMEV(oparg); |
| if ((x = f->f_locals) == NULL) { |
| PyErr_SetString(PyExc_SystemError, |
| "no locals"); |
| break; |
| } |
| if ((err = PyDict_DelItem(x, w)) != 0) |
| PyErr_SetObject(PyExc_NameError, w); |
| break; |
| |
| #ifdef CASE_TOO_BIG |
| default: switch (opcode) { |
| #endif |
| |
| case UNPACK_TUPLE: |
| case UNPACK_LIST: |
| v = POP(); |
| if (PyTuple_Check(v)) { |
| if (PyTuple_Size(v) != oparg) { |
| PyErr_SetString(PyExc_ValueError, |
| "unpack tuple of wrong size"); |
| why = WHY_EXCEPTION; |
| } |
| else { |
| for (; --oparg >= 0; ) { |
| w = PyTuple_GET_ITEM(v, oparg); |
| Py_INCREF(w); |
| PUSH(w); |
| } |
| } |
| } |
| else if (PyList_Check(v)) { |
| if (PyList_Size(v) != oparg) { |
| PyErr_SetString(PyExc_ValueError, |
| "unpack list of wrong size"); |
| why = WHY_EXCEPTION; |
| } |
| else { |
| for (; --oparg >= 0; ) { |
| w = PyList_GET_ITEM(v, oparg); |
| Py_INCREF(w); |
| PUSH(w); |
| } |
| } |
| } |
| else if (PySequence_Check(v)) { |
| if (unpack_sequence(v, oparg, |
| stack_pointer + oparg)) |
| stack_pointer += oparg; |
| else |
| why = WHY_EXCEPTION; |
| } |
| else { |
| PyErr_SetString(PyExc_TypeError, |
| "unpack non-sequence"); |
| why = WHY_EXCEPTION; |
| } |
| Py_DECREF(v); |
| break; |
| |
| case STORE_ATTR: |
| w = GETNAMEV(oparg); |
| v = POP(); |
| u = POP(); |
| err = PyObject_SetAttr(v, w, u); /* v.w = u */ |
| Py_DECREF(v); |
| Py_DECREF(u); |
| break; |
| |
| case DELETE_ATTR: |
| w = GETNAMEV(oparg); |
| v = POP(); |
| err = PyObject_SetAttr(v, w, (PyObject *)NULL); |
| /* del v.w */ |
| Py_DECREF(v); |
| break; |
| |
| case STORE_GLOBAL: |
| w = GETNAMEV(oparg); |
| v = POP(); |
| err = PyDict_SetItem(f->f_globals, w, v); |
| Py_DECREF(v); |
| break; |
| |
| case DELETE_GLOBAL: |
| w = GETNAMEV(oparg); |
| if ((err = PyDict_DelItem(f->f_globals, w)) != 0) |
| PyErr_SetObject(PyExc_NameError, w); |
| break; |
| |
| case LOAD_CONST: |
| x = GETCONST(oparg); |
| Py_INCREF(x); |
| PUSH(x); |
| break; |
| |
| case LOAD_NAME: |
| w = GETNAMEV(oparg); |
| if ((x = f->f_locals) == NULL) { |
| PyErr_SetString(PyExc_SystemError, |
| "no locals"); |
| break; |
| } |
| x = PyDict_GetItem(x, w); |
| if (x == NULL) { |
| x = PyDict_GetItem(f->f_globals, w); |
| if (x == NULL) { |
| x = PyDict_GetItem(f->f_builtins, w); |
| if (x == NULL) { |
| PyErr_SetObject( |
| PyExc_NameError, w); |
| break; |
| } |
| } |
| } |
| Py_INCREF(x); |
| PUSH(x); |
| break; |
| |
| case LOAD_GLOBAL: |
| w = GETNAMEV(oparg); |
| x = PyDict_GetItem(f->f_globals, w); |
| if (x == NULL) { |
| x = PyDict_GetItem(f->f_builtins, w); |
| if (x == NULL) { |
| PyErr_SetObject(PyExc_NameError, w); |
| break; |
| } |
| } |
| Py_INCREF(x); |
| PUSH(x); |
| break; |
| |
| case LOAD_FAST: |
| x = GETLOCAL(oparg); |
| if (x == NULL) { |
| PyErr_SetObject(PyExc_UnboundLocalError, |
| PyTuple_GetItem(co->co_varnames, |
| oparg)); |
| break; |
| } |
| Py_INCREF(x); |
| PUSH(x); |
| if (x != NULL) continue; |
| break; |
| |
| case STORE_FAST: |
| v = POP(); |
| SETLOCAL(oparg, v); |
| continue; |
| |
| case DELETE_FAST: |
| x = GETLOCAL(oparg); |
| if (x == NULL) { |
| PyErr_SetObject(PyExc_UnboundLocalError, |
| PyTuple_GetItem(co->co_varnames, |
| oparg)); |
| break; |
| } |
| SETLOCAL(oparg, NULL); |
| continue; |
| |
| case BUILD_TUPLE: |
| x = PyTuple_New(oparg); |
| if (x != NULL) { |
| for (; --oparg >= 0;) { |
| w = POP(); |
| PyTuple_SET_ITEM(x, oparg, w); |
| } |
| PUSH(x); |
| continue; |
| } |
| break; |
| |
| case BUILD_LIST: |
| x = PyList_New(oparg); |
| if (x != NULL) { |
| for (; --oparg >= 0;) { |
| w = POP(); |
| PyList_SET_ITEM(x, oparg, w); |
| } |
| PUSH(x); |
| continue; |
| } |
| break; |
| |
| case BUILD_MAP: |
| x = PyDict_New(); |
| PUSH(x); |
| if (x != NULL) continue; |
| break; |
| |
| case LOAD_ATTR: |
| w = GETNAMEV(oparg); |
| v = POP(); |
| x = PyObject_GetAttr(v, w); |
| Py_DECREF(v); |
| PUSH(x); |
| if (x != NULL) continue; |
| break; |
| |
| case COMPARE_OP: |
| w = POP(); |
| v = POP(); |
| if (PyInt_Check(v) && PyInt_Check(w)) { |
| /* INLINE: cmp(int, int) */ |
| register long a, b; |
| register int res; |
| a = PyInt_AS_LONG(v); |
| b = PyInt_AS_LONG(w); |
| switch (oparg) { |
| case LT: res = a < b; break; |
| case LE: res = a <= b; break; |
| case EQ: res = a == b; break; |
| case NE: res = a != b; break; |
| case GT: res = a > b; break; |
| case GE: res = a >= b; break; |
| case IS: res = v == w; break; |
| case IS_NOT: res = v != w; break; |
| default: goto slow_compare; |
| } |
| x = res ? Py_True : Py_False; |
| Py_INCREF(x); |
| } |
| else { |
| slow_compare: |
| x = cmp_outcome(oparg, v, w); |
| } |
| Py_DECREF(v); |
| Py_DECREF(w); |
| PUSH(x); |
| if (x != NULL) continue; |
| break; |
| |
| case IMPORT_NAME: |
| w = GETNAMEV(oparg); |
| x = PyDict_GetItemString(f->f_builtins, "__import__"); |
| if (x == NULL) { |
| PyErr_SetString(PyExc_ImportError, |
| "__import__ not found"); |
| break; |
| } |
| u = find_from_args(f, INSTR_OFFSET()); |
| if (u == NULL) { |
| x = u; |
| break; |
| } |
| w = Py_BuildValue("(OOOO)", |
| w, |
| f->f_globals, |
| f->f_locals == NULL ? |
| Py_None : f->f_locals, |
| u); |
| Py_DECREF(u); |
| if (w == NULL) { |
| x = NULL; |
| break; |
| } |
| x = PyEval_CallObject(x, w); |
| Py_DECREF(w); |
| PUSH(x); |
| if (x != NULL) continue; |
| break; |
| |
| case IMPORT_FROM: |
| w = GETNAMEV(oparg); |
| v = TOP(); |
| PyFrame_FastToLocals(f); |
| if ((x = f->f_locals) == NULL) { |
| PyErr_SetString(PyExc_SystemError, |
| "no locals"); |
| break; |
| } |
| err = import_from(x, v, w); |
| PyFrame_LocalsToFast(f, 0); |
| if (err == 0) continue; |
| break; |
| |
| case JUMP_FORWARD: |
| JUMPBY(oparg); |
| continue; |
| |
| case JUMP_IF_FALSE: |
| err = PyObject_IsTrue(TOP()); |
| if (err > 0) |
| err = 0; |
| else if (err == 0) |
| JUMPBY(oparg); |
| else |
| break; |
| continue; |
| |
| case JUMP_IF_TRUE: |
| err = PyObject_IsTrue(TOP()); |
| if (err > 0) { |
| err = 0; |
| JUMPBY(oparg); |
| } |
| else if (err == 0) |
| ; |
| else |
| break; |
| continue; |
| |
| case JUMP_ABSOLUTE: |
| JUMPTO(oparg); |
| continue; |
| |
| case FOR_LOOP: |
| /* for v in s: ... |
| On entry: stack contains s, i. |
| On exit: stack contains s, i+1, s[i]; |
| but if loop exhausted: |
| s, i are popped, and we jump */ |
| w = POP(); /* Loop index */ |
| v = POP(); /* Sequence object */ |
| u = loop_subscript(v, w); |
| if (u != NULL) { |
| PUSH(v); |
| x = PyInt_FromLong(PyInt_AsLong(w)+1); |
| PUSH(x); |
| Py_DECREF(w); |
| PUSH(u); |
| if (x != NULL) continue; |
| } |
| else { |
| Py_DECREF(v); |
| Py_DECREF(w); |
| /* A NULL can mean "s exhausted" |
| but also an error: */ |
| if (PyErr_Occurred()) |
| why = WHY_EXCEPTION; |
| else { |
| JUMPBY(oparg); |
| continue; |
| } |
| } |
| break; |
| |
| case SETUP_LOOP: |
| case SETUP_EXCEPT: |
| case SETUP_FINALLY: |
| PyFrame_BlockSetup(f, opcode, INSTR_OFFSET() + oparg, |
| STACK_LEVEL()); |
| continue; |
| |
| case SET_LINENO: |
| #ifdef LLTRACE |
| if (lltrace) |
| printf("--- %s:%d \n", filename, oparg); |
| #endif |
| f->f_lineno = oparg; |
| if (f->f_trace == NULL) |
| continue; |
| /* Trace each line of code reached */ |
| f->f_lasti = INSTR_OFFSET(); |
| err = call_trace(&f->f_trace, &f->f_trace, |
| f, "line", Py_None); |
| break; |
| |
| case CALL_FUNCTION: |
| { |
| int na = oparg & 0xff; |
| int nk = (oparg>>8) & 0xff; |
| int n = na + 2*nk; |
| PyObject **pfunc = stack_pointer - n - 1; |
| PyObject *func = *pfunc; |
| PyObject *self = NULL; |
| PyObject *class = NULL; |
| f->f_lasti = INSTR_OFFSET() - 3; /* For tracing */ |
| if (PyMethod_Check(func)) { |
| self = PyMethod_Self(func); |
| class = PyMethod_Class(func); |
| func = PyMethod_Function(func); |
| Py_INCREF(func); |
| if (self != NULL) { |
| Py_INCREF(self); |
| Py_DECREF(*pfunc); |
| *pfunc = self; |
| na++; |
| n++; |
| } |
| else { |
| /* Unbound methods must be |
| called with an instance of |
| the class (or a derived |
| class) as first argument */ |
| if (na > 0 && |
| (self = stack_pointer[-n]) |
| != NULL && |
| PyInstance_Check(self) && |
| PyClass_IsSubclass( |
| (PyObject *) |
| (((PyInstanceObject *)self) |
| ->in_class), |
| class)) |
| /* Handy-dandy */ ; |
| else { |
| PyErr_SetString( |
| PyExc_TypeError, |
| "unbound method must be called with class instance 1st argument"); |
| x = NULL; |
| break; |
| } |
| } |
| } |
| else |
| Py_INCREF(func); |
| if (PyFunction_Check(func)) { |
| PyObject *co = PyFunction_GetCode(func); |
| PyObject *globals = |
| PyFunction_GetGlobals(func); |
| PyObject *argdefs = |
| PyFunction_GetDefaults(func); |
| PyObject **d; |
| int nd; |
| if (argdefs != NULL) { |
| d = &PyTuple_GET_ITEM(argdefs, 0); |
| nd = ((PyTupleObject *)argdefs) -> |
| ob_size; |
| } |
| else { |
| d = NULL; |
| nd = 0; |
| } |
| x = eval_code2( |
| (PyCodeObject *)co, |
| globals, (PyObject *)NULL, |
| stack_pointer-n, na, |
| stack_pointer-2*nk, nk, |
| d, nd, |
| class); |
| } |
| else { |
| PyObject *args = PyTuple_New(na); |
| PyObject *kwdict = NULL; |
| if (args == NULL) { |
| x = NULL; |
| break; |
| } |
| if (nk > 0) { |
| kwdict = PyDict_New(); |
| if (kwdict == NULL) { |
| x = NULL; |
| break; |
| } |
| err = 0; |
| while (--nk >= 0) { |
| PyObject *value = POP(); |
| PyObject *key = POP(); |
| err = PyDict_SetItem( |
| kwdict, key, value); |
| Py_DECREF(key); |
| Py_DECREF(value); |
| if (err) |
| break; |
| } |
| if (err) { |
| Py_DECREF(args); |
| Py_DECREF(kwdict); |
| break; |
| } |
| } |
| while (--na >= 0) { |
| w = POP(); |
| PyTuple_SET_ITEM(args, na, w); |
| } |
| x = PyEval_CallObjectWithKeywords( |
| func, args, kwdict); |
| Py_DECREF(args); |
| Py_XDECREF(kwdict); |
| } |
| Py_DECREF(func); |
| while (stack_pointer > pfunc) { |
| w = POP(); |
| Py_DECREF(w); |
| } |
| PUSH(x); |
| if (x != NULL) continue; |
| break; |
| } |
| |
| case MAKE_FUNCTION: |
| v = POP(); /* code object */ |
| x = PyFunction_New(v, f->f_globals); |
| Py_DECREF(v); |
| /* XXX Maybe this should be a separate opcode? */ |
| if (x != NULL && oparg > 0) { |
| v = PyTuple_New(oparg); |
| if (v == NULL) { |
| Py_DECREF(x); |
| x = NULL; |
| break; |
| } |
| while (--oparg >= 0) { |
| w = POP(); |
| PyTuple_SET_ITEM(v, oparg, w); |
| } |
| err = PyFunction_SetDefaults(x, v); |
| Py_DECREF(v); |
| } |
| PUSH(x); |
| break; |
| |
| case BUILD_SLICE: |
| if (oparg == 3) |
| w = POP(); |
| else |
| w = NULL; |
| v = POP(); |
| u = POP(); |
| x = PySlice_New(u, v, w); |
| Py_DECREF(u); |
| Py_DECREF(v); |
| Py_XDECREF(w); |
| PUSH(x); |
| if (x != NULL) continue; |
| break; |
| |
| |
| default: |
| fprintf(stderr, |
| "XXX lineno: %d, opcode: %d\n", |
| f->f_lineno, opcode); |
| PyErr_SetString(PyExc_SystemError, "unknown opcode"); |
| why = WHY_EXCEPTION; |
| break; |
| |
| #ifdef CASE_TOO_BIG |
| } |
| #endif |
| |
| } /* switch */ |
| |
| on_error: |
| |
| /* Quickly continue if no error occurred */ |
| |
| if (why == WHY_NOT) { |
| if (err == 0 && x != NULL) { |
| #ifdef CHECKEXC |
| /* This check is expensive! */ |
| if (PyErr_Occurred()) |
| fprintf(stderr, |
| "XXX undetected error\n"); |
| else |
| #endif |
| continue; /* Normal, fast path */ |
| } |
| why = WHY_EXCEPTION; |
| x = Py_None; |
| err = 0; |
| } |
| |
| /* Double-check exception status */ |
| |
| if (why == WHY_EXCEPTION || why == WHY_RERAISE) { |
| if (!PyErr_Occurred()) { |
| PyErr_SetString(PyExc_SystemError, |
| "error return without exception set"); |
| why = WHY_EXCEPTION; |
| } |
| } |
| #ifdef CHECKEXC |
| else { |
| /* This check is expensive! */ |
| if (PyErr_Occurred()) { |
| fprintf(stderr, |
| "XXX undetected error (why=%d)\n", |
| why); |
| why = WHY_EXCEPTION; |
| } |
| } |
| #endif |
| |
| /* Log traceback info if this is a real exception */ |
| |
| if (why == WHY_EXCEPTION) { |
| f->f_lasti = INSTR_OFFSET() - 1; |
| if (HAS_ARG(opcode)) |
| f->f_lasti -= 2; |
| PyTraceBack_Here(f); |
| |
| if (f->f_trace) |
| call_exc_trace(&f->f_trace, &f->f_trace, f); |
| if (tstate->sys_profilefunc) |
| call_exc_trace(&tstate->sys_profilefunc, |
| (PyObject**)0, f); |
| } |
| |
| /* For the rest, treat WHY_RERAISE as WHY_EXCEPTION */ |
| |
| if (why == WHY_RERAISE) |
| why = WHY_EXCEPTION; |
| |
| /* Unwind stacks if a (pseudo) exception occurred */ |
| |
| while (why != WHY_NOT && f->f_iblock > 0) { |
| PyTryBlock *b = PyFrame_BlockPop(f); |
| while (STACK_LEVEL() > b->b_level) { |
| v = POP(); |
| Py_XDECREF(v); |
| } |
| if (b->b_type == SETUP_LOOP && why == WHY_BREAK) { |
| why = WHY_NOT; |
| JUMPTO(b->b_handler); |
| break; |
| } |
| if (b->b_type == SETUP_FINALLY || |
| (b->b_type == SETUP_EXCEPT && |
| why == WHY_EXCEPTION)) { |
| if (why == WHY_EXCEPTION) { |
| PyObject *exc, *val, *tb; |
| PyErr_Fetch(&exc, &val, &tb); |
| if (val == NULL) { |
| val = Py_None; |
| Py_INCREF(val); |
| } |
| /* Make the raw exception data |
| available to the handler, |
| so a program can emulate the |
| Python main loop. Don't do |
| this for 'finally'. */ |
| if (b->b_type == SETUP_EXCEPT) { |
| PyErr_NormalizeException( |
| &exc, &val, &tb); |
| set_exc_info(tstate, |
| exc, val, tb); |
| } |
| PUSH(tb); |
| PUSH(val); |
| PUSH(exc); |
| } |
| else { |
| if (why == WHY_RETURN) |
| PUSH(retval); |
| v = PyInt_FromLong((long)why); |
| PUSH(v); |
| } |
| why = WHY_NOT; |
| JUMPTO(b->b_handler); |
| break; |
| } |
| } /* unwind stack */ |
| |
| /* End the loop if we still have an error (or return) */ |
| |
| if (why != WHY_NOT) |
| break; |
| |
| } /* main loop */ |
| |
| /* Pop remaining stack entries */ |
| |
| while (!EMPTY()) { |
| v = POP(); |
| Py_XDECREF(v); |
| } |
| |
| if (why != WHY_RETURN) |
| retval = NULL; |
| |
| if (f->f_trace) { |
| if (why == WHY_RETURN) { |
| if (call_trace(&f->f_trace, &f->f_trace, f, |
| "return", retval)) { |
| Py_XDECREF(retval); |
| retval = NULL; |
| why = WHY_EXCEPTION; |
| } |
| } |
| } |
| |
| if (tstate->sys_profilefunc && why == WHY_RETURN) { |
| if (call_trace(&tstate->sys_profilefunc, (PyObject**)0, |
| f, "return", retval)) { |
| Py_XDECREF(retval); |
| retval = NULL; |
| why = WHY_EXCEPTION; |
| } |
| } |
| |
| reset_exc_info(tstate); |
| |
| --tstate->recursion_depth; |
| |
| fail: /* Jump here from prelude on failure */ |
| |
| /* Restore previous frame and release the current one */ |
| |
| tstate->frame = f->f_back; |
| Py_DECREF(f); |
| |
| return retval; |
| } |
| |
| static void |
| set_exc_info(tstate, type, value, tb) |
| PyThreadState *tstate; |
| PyObject *type; |
| PyObject *value; |
| PyObject *tb; |
| { |
| PyFrameObject *frame; |
| PyObject *tmp_type, *tmp_value, *tmp_tb; |
| |
| frame = tstate->frame; |
| if (frame->f_exc_type == NULL) { |
| /* This frame didn't catch an exception before */ |
| /* Save previous exception of this thread in this frame */ |
| if (tstate->exc_type == NULL) { |
| Py_INCREF(Py_None); |
| tstate->exc_type = Py_None; |
| } |
| tmp_type = frame->f_exc_type; |
| tmp_value = frame->f_exc_value; |
| tmp_tb = frame->f_exc_traceback; |
| Py_XINCREF(tstate->exc_type); |
| Py_XINCREF(tstate->exc_value); |
| Py_XINCREF(tstate->exc_traceback); |
| frame->f_exc_type = tstate->exc_type; |
| frame->f_exc_value = tstate->exc_value; |
| frame->f_exc_traceback = tstate->exc_traceback; |
| Py_XDECREF(tmp_type); |
| Py_XDECREF(tmp_value); |
| Py_XDECREF(tmp_tb); |
| } |
| /* Set new exception for this thread */ |
| tmp_type = tstate->exc_type; |
| tmp_value = tstate->exc_value; |
| tmp_tb = tstate->exc_traceback; |
| Py_XINCREF(type); |
| Py_XINCREF(value); |
| Py_XINCREF(tb); |
| tstate->exc_type = type; |
| tstate->exc_value = value; |
| tstate->exc_traceback = tb; |
| Py_XDECREF(tmp_type); |
| Py_XDECREF(tmp_value); |
| Py_XDECREF(tmp_tb); |
| /* For b/w compatibility */ |
| PySys_SetObject("exc_type", type); |
| PySys_SetObject("exc_value", value); |
| PySys_SetObject("exc_traceback", tb); |
| } |
| |
| static void |
| reset_exc_info(tstate) |
| PyThreadState *tstate; |
| { |
| PyFrameObject *frame; |
| PyObject *tmp_type, *tmp_value, *tmp_tb; |
| frame = tstate->frame; |
| if (frame->f_exc_type != NULL) { |
| /* This frame caught an exception */ |
| tmp_type = tstate->exc_type; |
| tmp_value = tstate->exc_value; |
| tmp_tb = tstate->exc_traceback; |
| Py_XINCREF(frame->f_exc_type); |
| Py_XINCREF(frame->f_exc_value); |
| Py_XINCREF(frame->f_exc_traceback); |
| tstate->exc_type = frame->f_exc_type; |
| tstate->exc_value = frame->f_exc_value; |
| tstate->exc_traceback = frame->f_exc_traceback; |
| Py_XDECREF(tmp_type); |
| Py_XDECREF(tmp_value); |
| Py_XDECREF(tmp_tb); |
| /* For b/w compatibility */ |
| PySys_SetObject("exc_type", frame->f_exc_type); |
| PySys_SetObject("exc_value", frame->f_exc_value); |
| PySys_SetObject("exc_traceback", frame->f_exc_traceback); |
| } |
| tmp_type = frame->f_exc_type; |
| tmp_value = frame->f_exc_value; |
| tmp_tb = frame->f_exc_traceback; |
| frame->f_exc_type = NULL; |
| frame->f_exc_value = NULL; |
| frame->f_exc_traceback = NULL; |
| Py_XDECREF(tmp_type); |
| Py_XDECREF(tmp_value); |
| Py_XDECREF(tmp_tb); |
| } |
| |
| /* Logic for the raise statement (too complicated for inlining). |
| This *consumes* a reference count to each of its arguments. */ |
| static enum why_code |
| do_raise(type, value, tb) |
| PyObject *type, *value, *tb; |
| { |
| if (type == NULL) { |
| /* Reraise */ |
| PyThreadState *tstate = PyThreadState_Get(); |
| type = tstate->exc_type == NULL ? Py_None : tstate->exc_type; |
| value = tstate->exc_value; |
| tb = tstate->exc_traceback; |
| Py_XINCREF(type); |
| Py_XINCREF(value); |
| Py_XINCREF(tb); |
| } |
| |
| /* We support the following forms of raise: |
| raise <class>, <classinstance> |
| raise <class>, <argument tuple> |
| raise <class>, None |
| raise <class>, <argument> |
| raise <classinstance>, None |
| raise <string>, <object> |
| raise <string>, None |
| |
| An omitted second argument is the same as None. |
| |
| In addition, raise <tuple>, <anything> is the same as |
| raising the tuple's first item (and it better have one!); |
| this rule is applied recursively. |
| |
| Finally, an optional third argument can be supplied, which |
| gives the traceback to be substituted (useful when |
| re-raising an exception after examining it). */ |
| |
| /* First, check the traceback argument, replacing None with |
| NULL. */ |
| if (tb == Py_None) { |
| Py_DECREF(tb); |
| tb = NULL; |
| } |
| else if (tb != NULL && !PyTraceBack_Check(tb)) { |
| PyErr_SetString(PyExc_TypeError, |
| "raise 3rd arg must be traceback or None"); |
| goto raise_error; |
| } |
| |
| /* Next, replace a missing value with None */ |
| if (value == NULL) { |
| value = Py_None; |
| Py_INCREF(value); |
| } |
| |
| /* Next, repeatedly, replace a tuple exception with its first item */ |
| while (PyTuple_Check(type) && PyTuple_Size(type) > 0) { |
| PyObject *tmp = type; |
| type = PyTuple_GET_ITEM(type, 0); |
| Py_INCREF(type); |
| Py_DECREF(tmp); |
| } |
| |
| if (PyString_Check(type)) |
| ; |
| |
| else if (PyClass_Check(type)) |
| PyErr_NormalizeException(&type, &value, &tb); |
| |
| else if (PyInstance_Check(type)) { |
| /* Raising an instance. The value should be a dummy. */ |
| if (value != Py_None) { |
| PyErr_SetString(PyExc_TypeError, |
| "instance exception may not have a separate value"); |
| goto raise_error; |
| } |
| else { |
| /* Normalize to raise <class>, <instance> */ |
| Py_DECREF(value); |
| value = type; |
| type = (PyObject*) ((PyInstanceObject*)type)->in_class; |
| Py_INCREF(type); |
| } |
| } |
| else { |
| /* Not something you can raise. You get an exception |
| anyway, just not what you specified :-) */ |
| PyErr_SetString(PyExc_TypeError, |
| "exceptions must be strings, classes, or instances"); |
| goto raise_error; |
| } |
| PyErr_Restore(type, value, tb); |
| if (tb == NULL) |
| return WHY_EXCEPTION; |
| else |
| return WHY_RERAISE; |
| raise_error: |
| Py_XDECREF(value); |
| Py_XDECREF(type); |
| Py_XDECREF(tb); |
| return WHY_EXCEPTION; |
| } |
| |
| static int |
| unpack_sequence(v, argcnt, sp) |
| PyObject *v; |
| int argcnt; |
| PyObject **sp; |
| { |
| int i; |
| PyObject *w; |
| |
| for (i = 0; i < argcnt; i++) { |
| if (! (w = PySequence_GetItem(v, i))) { |
| if (PyErr_ExceptionMatches(PyExc_IndexError)) |
| PyErr_SetString(PyExc_ValueError, |
| "unpack sequence of wrong size"); |
| goto finally; |
| } |
| *--sp = w; |
| } |
| /* we better get an IndexError now */ |
| if (PySequence_GetItem(v, i) == NULL) { |
| if (PyErr_ExceptionMatches(PyExc_IndexError)) { |
| PyErr_Clear(); |
| return 1; |
| } |
| /* some other exception occurred. fall through to finally */ |
| } |
| else |
| PyErr_SetString(PyExc_ValueError, |
| "unpack sequence of wrong size"); |
| /* fall through */ |
| finally: |
| for (; i > 0; i--, sp++) |
| Py_DECREF(*sp); |
| |
| return 0; |
| } |
| |
| |
| #ifdef LLTRACE |
| static int |
| prtrace(v, str) |
| PyObject *v; |
| char *str; |
| { |
| printf("%s ", str); |
| if (PyObject_Print(v, stdout, 0) != 0) |
| PyErr_Clear(); /* Don't know what else to do */ |
| printf("\n"); |
| } |
| #endif |
| |
| static void |
| call_exc_trace(p_trace, p_newtrace, f) |
| PyObject **p_trace, **p_newtrace; |
| PyFrameObject *f; |
| { |
| PyObject *type, *value, *traceback, *arg; |
| int err; |
| PyErr_Fetch(&type, &value, &traceback); |
| if (value == NULL) { |
| value = Py_None; |
| Py_INCREF(value); |
| } |
| arg = Py_BuildValue("(OOO)", type, value, traceback); |
| if (arg == NULL) { |
| PyErr_Restore(type, value, traceback); |
| return; |
| } |
| err = call_trace(p_trace, p_newtrace, f, "exception", arg); |
| Py_DECREF(arg); |
| if (err == 0) |
| PyErr_Restore(type, value, traceback); |
| else { |
| Py_XDECREF(type); |
| Py_XDECREF(value); |
| Py_XDECREF(traceback); |
| } |
| } |
| |
| static int |
| call_trace(p_trace, p_newtrace, f, msg, arg) |
| PyObject **p_trace; /* in/out; may not be NULL; |
| may not point to NULL variable initially */ |
| PyObject **p_newtrace; /* in/out; may be NULL; |
| may point to NULL variable; |
| may be same variable as p_newtrace */ |
| PyFrameObject *f; |
| char *msg; |
| PyObject *arg; |
| { |
| PyThreadState *tstate = f->f_tstate; |
| PyObject *args, *what; |
| PyObject *res = NULL; |
| |
| if (tstate->tracing) { |
| /* Don't do recursive traces */ |
| if (p_newtrace) { |
| Py_XDECREF(*p_newtrace); |
| *p_newtrace = NULL; |
| } |
| return 0; |
| } |
| |
| args = PyTuple_New(3); |
| if (args == NULL) |
| goto cleanup; |
| what = PyString_FromString(msg); |
| if (what == NULL) |
| goto cleanup; |
| Py_INCREF(f); |
| PyTuple_SET_ITEM(args, 0, (PyObject *)f); |
| PyTuple_SET_ITEM(args, 1, what); |
| if (arg == NULL) |
| arg = Py_None; |
| Py_INCREF(arg); |
| PyTuple_SET_ITEM(args, 2, arg); |
| tstate->tracing++; |
| PyFrame_FastToLocals(f); |
| res = PyEval_CallObject(*p_trace, args); /* May clear *p_trace! */ |
| PyFrame_LocalsToFast(f, 1); |
| tstate->tracing--; |
| cleanup: |
| Py_XDECREF(args); |
| if (res == NULL) { |
| /* The trace proc raised an exception */ |
| PyTraceBack_Here(f); |
| Py_XDECREF(*p_trace); |
| *p_trace = NULL; |
| if (p_newtrace) { |
| Py_XDECREF(*p_newtrace); |
| *p_newtrace = NULL; |
| } |
| return -1; |
| } |
| else { |
| if (p_newtrace) { |
| Py_XDECREF(*p_newtrace); |
| if (res == Py_None) |
| *p_newtrace = NULL; |
| else { |
| Py_INCREF(res); |
| *p_newtrace = res; |
| } |
| } |
| Py_DECREF(res); |
| return 0; |
| } |
| } |
| |
| PyObject * |
| PyEval_GetBuiltins() |
| { |
| PyThreadState *tstate = PyThreadState_Get(); |
| PyFrameObject *current_frame = tstate->frame; |
| if (current_frame == NULL) |
| return tstate->interp->builtins; |
| else |
| return current_frame->f_builtins; |
| } |
| |
| PyObject * |
| PyEval_GetLocals() |
| { |
| PyFrameObject *current_frame = PyThreadState_Get()->frame; |
| if (current_frame == NULL) |
| return NULL; |
| PyFrame_FastToLocals(current_frame); |
| return current_frame->f_locals; |
| } |
| |
| PyObject * |
| PyEval_GetGlobals() |
| { |
| PyFrameObject *current_frame = PyThreadState_Get()->frame; |
| if (current_frame == NULL) |
| return NULL; |
| else |
| return current_frame->f_globals; |
| } |
| |
| PyObject * |
| PyEval_GetFrame() |
| { |
| PyFrameObject *current_frame = PyThreadState_Get()->frame; |
| return (PyObject *)current_frame; |
| } |
| |
| int |
| PyEval_GetRestricted() |
| { |
| PyFrameObject *current_frame = PyThreadState_Get()->frame; |
| return current_frame == NULL ? 0 : current_frame->f_restricted; |
| } |
| |
| int |
| Py_FlushLine() |
| { |
| PyObject *f = PySys_GetObject("stdout"); |
| if (f == NULL) |
| return 0; |
| if (!PyFile_SoftSpace(f, 0)) |
| return 0; |
| return PyFile_WriteString("\n", f); |
| } |
| |
| |
| /* External interface to call any callable object. |
| The arg must be a tuple or NULL. */ |
| |
| #undef PyEval_CallObject |
| /* for backward compatibility: export this interface */ |
| |
| PyObject * |
| PyEval_CallObject(func, arg) |
| PyObject *func; |
| PyObject *arg; |
| { |
| return PyEval_CallObjectWithKeywords(func, arg, (PyObject *)NULL); |
| } |
| #define PyEval_CallObject(func,arg) \ |
| PyEval_CallObjectWithKeywords(func, arg, (PyObject *)NULL) |
| |
| PyObject * |
| PyEval_CallObjectWithKeywords(func, arg, kw) |
| PyObject *func; |
| PyObject *arg; |
| PyObject *kw; |
| { |
| ternaryfunc call; |
| PyObject *result; |
| |
| if (arg == NULL) |
| arg = PyTuple_New(0); |
| else if (!PyTuple_Check(arg)) { |
| PyErr_SetString(PyExc_TypeError, |
| "argument list must be a tuple"); |
| return NULL; |
| } |
| else |
| Py_INCREF(arg); |
| |
| if (kw != NULL && !PyDict_Check(kw)) { |
| PyErr_SetString(PyExc_TypeError, |
| "keyword list must be a dictionary"); |
| 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); |
| else |
| result = call_builtin(func, arg, kw); |
| |
| Py_DECREF(arg); |
| |
| if (result == NULL && !PyErr_Occurred()) |
| PyErr_SetString(PyExc_SystemError, |
| "NULL result without error in call_object"); |
| |
| return result; |
| } |
| |
| static PyObject * |
| call_builtin(func, arg, kw) |
| PyObject *func; |
| PyObject *arg; |
| PyObject *kw; |
| { |
| if (PyCFunction_Check(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_SetString(PyExc_TypeError, |
| "this function takes no keyword arguments"); |
| return NULL; |
| } |
| return (*meth)(self, arg); |
| } |
| if (PyClass_Check(func)) { |
| return PyInstance_New(func, arg, kw); |
| } |
| if (PyInstance_Check(func)) { |
| PyObject *res, *call = PyObject_GetAttrString(func,"__call__"); |
| if (call == NULL) { |
| PyErr_Clear(); |
| PyErr_SetString(PyExc_AttributeError, |
| "no __call__ method defined"); |
| return NULL; |
| } |
| res = PyEval_CallObjectWithKeywords(call, arg, kw); |
| Py_DECREF(call); |
| return res; |
| } |
| PyErr_Format(PyExc_TypeError, "call of non-function (type %s)", |
| func->ob_type->tp_name); |
| return NULL; |
| } |
| |
| static PyObject * |
| call_function(func, arg, kw) |
| 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(); |
| 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 class instance 1st 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 %s)", |
| func->ob_type->tp_name); |
| return NULL; |
| } |
| Py_INCREF(arg); |
| } |
| |
| argdefs = PyFunction_GetDefaults(func); |
| if (argdefs != NULL && PyTuple_Check(argdefs)) { |
| d = &PyTuple_GET_ITEM((PyTupleObject *)argdefs, 0); |
| nd = PyTuple_Size(argdefs); |
| } |
| else { |
| d = NULL; |
| nd = 0; |
| } |
| |
| if (kw != NULL) { |
| int pos, i; |
| nk = PyDict_Size(kw); |
| k = PyMem_NEW(PyObject *, 2*nk); |
| if (k == NULL) { |
| PyErr_NoMemory(); |
| Py_DECREF(arg); |
| return NULL; |
| } |
| pos = i = 0; |
| while (PyDict_Next(kw, &pos, &k[i], &k[i+1])) |
| i += 2; |
| nk = i/2; |
| /* XXX This is broken if the caller deletes dict items! */ |
| } |
| else { |
| k = NULL; |
| nk = 0; |
| } |
| |
| result = eval_code2( |
| (PyCodeObject *)PyFunction_GetCode(func), |
| PyFunction_GetGlobals(func), (PyObject *)NULL, |
| &PyTuple_GET_ITEM(arg, 0), PyTuple_Size(arg), |
| k, nk, |
| d, nd, |
| class); |
| |
| Py_DECREF(arg); |
| PyMem_XDEL(k); |
| |
| return result; |
| } |
| |
| #define SLICE_ERROR_MSG \ |
| "standard sequence type does not support step size other than one" |
| |
| static PyObject * |
| loop_subscript(v, w) |
| PyObject *v, *w; |
| { |
| PySequenceMethods *sq = v->ob_type->tp_as_sequence; |
| int i; |
| if (sq == NULL || sq->sq_item == NULL) { |
| PyErr_SetString(PyExc_TypeError, "loop over non-sequence"); |
| return NULL; |
| } |
| i = PyInt_AsLong(w); |
| v = (*sq->sq_item)(v, i); |
| if (v) |
| return v; |
| if (PyErr_ExceptionMatches(PyExc_IndexError)) |
| PyErr_Clear(); |
| return NULL; |
| } |
| |
| static int |
| slice_index(v, pi) |
| PyObject *v; |
| int *pi; |
| { |
| if (v != NULL) { |
| long x; |
| if (!PyInt_Check(v)) { |
| PyErr_SetString(PyExc_TypeError, |
| "slice index must be int"); |
| return -1; |
| } |
| x = PyInt_AsLong(v); |
| /* Truncate -- very long indices are truncated anyway */ |
| if (x > INT_MAX) |
| x = INT_MAX; |
| else if (x < -INT_MAX) |
| x = 0; |
| *pi = x; |
| } |
| return 0; |
| } |
| |
| static PyObject * |
| apply_slice(u, v, w) /* return u[v:w] */ |
| PyObject *u, *v, *w; |
| { |
| int ilow = 0, ihigh = INT_MAX; |
| if (slice_index(v, &ilow) != 0) |
| return NULL; |
| if (slice_index(w, &ihigh) != 0) |
| return NULL; |
| return PySequence_GetSlice(u, ilow, ihigh); |
| } |
| |
| static int |
| assign_slice(u, v, w, x) /* u[v:w] = x */ |
| PyObject *u, *v, *w, *x; |
| { |
| int ilow = 0, ihigh = INT_MAX; |
| if (slice_index(v, &ilow) != 0) |
| return -1; |
| if (slice_index(w, &ihigh) != 0) |
| return -1; |
| if (x == NULL) |
| return PySequence_DelSlice(u, ilow, ihigh); |
| else |
| return PySequence_SetSlice(u, ilow, ihigh, x); |
| } |
| |
| static PyObject * |
| cmp_outcome(op, v, w) |
| int op; |
| register PyObject *v; |
| register PyObject *w; |
| { |
| register int cmp; |
| register int res = 0; |
| switch (op) { |
| case IS: |
| case IS_NOT: |
| res = (v == w); |
| if (op == (int) IS_NOT) |
| res = !res; |
| break; |
| case IN: |
| case NOT_IN: |
| res = PySequence_Contains(w, v); |
| if (res < 0) |
| return NULL; |
| if (op == (int) NOT_IN) |
| res = !res; |
| break; |
| case EXC_MATCH: |
| res = PyErr_GivenExceptionMatches(v, w); |
| break; |
| default: |
| cmp = PyObject_Compare(v, w); |
| if (cmp && PyErr_Occurred()) |
| return NULL; |
| switch (op) { |
| case LT: res = cmp < 0; break; |
| case LE: res = cmp <= 0; break; |
| case EQ: res = cmp == 0; break; |
| case NE: res = cmp != 0; break; |
| case GT: res = cmp > 0; break; |
| case GE: res = cmp >= 0; break; |
| /* XXX no default? (res is initialized to 0 though) */ |
| } |
| } |
| v = res ? Py_True : Py_False; |
| Py_INCREF(v); |
| return v; |
| } |
| |
| static int |
| import_from(locals, v, name) |
| PyObject *locals; |
| PyObject *v; |
| PyObject *name; |
| { |
| PyObject *w, *x; |
| if (!PyModule_Check(v)) { |
| PyErr_SetString(PyExc_TypeError, |
| "import-from requires module object"); |
| return -1; |
| } |
| w = PyModule_GetDict(v); |
| if (PyString_AsString(name)[0] == '*') { |
| int pos, err; |
| PyObject *name, *value; |
| pos = 0; |
| while (PyDict_Next(w, &pos, &name, &value)) { |
| if (!PyString_Check(name) || |
| PyString_AsString(name)[0] == '_') |
| continue; |
| Py_INCREF(value); |
| err = PyDict_SetItem(locals, name, value); |
| Py_DECREF(value); |
| if (err != 0) |
| return -1; |
| } |
| return 0; |
| } |
| else { |
| x = PyDict_GetItem(w, name); |
| if (x == NULL) { |
| char buf[250]; |
| sprintf(buf, "cannot import name %.230s", |
| PyString_AsString(name)); |
| PyErr_SetString(PyExc_ImportError, buf); |
| return -1; |
| } |
| else |
| return PyDict_SetItem(locals, name, x); |
| } |
| } |
| |
| static PyObject * |
| build_class(methods, bases, name) |
| PyObject *methods; /* dictionary */ |
| PyObject *bases; /* tuple containing classes */ |
| PyObject *name; /* string */ |
| { |
| int i, n; |
| if (!PyTuple_Check(bases)) { |
| PyErr_SetString(PyExc_SystemError, |
| "build_class with non-tuple bases"); |
| return NULL; |
| } |
| if (!PyDict_Check(methods)) { |
| PyErr_SetString(PyExc_SystemError, |
| "build_class with non-dictionary"); |
| return NULL; |
| } |
| if (!PyString_Check(name)) { |
| PyErr_SetString(PyExc_SystemError, |
| "build_class witn non-string name"); |
| return NULL; |
| } |
| n = PyTuple_Size(bases); |
| for (i = 0; i < n; i++) { |
| PyObject *base = PyTuple_GET_ITEM(bases, i); |
| if (!PyClass_Check(base)) { |
| /* Call the base's *type*, if it is callable. |
| This code is a hook for Donald Beaudry's |
| and Jim Fulton's type extensions. In |
| unexended Python it will never be triggered |
| since its types are not callable. |
| Ditto: call the bases's *class*, if it has |
| one. This makes the same thing possible |
| without writing C code. A true meta-object |
| protocol! */ |
| PyObject *basetype = (PyObject *)base->ob_type; |
| PyObject *callable = NULL; |
| if (PyCallable_Check(basetype)) |
| callable = basetype; |
| else |
| callable = PyObject_GetAttrString( |
| base, "__class__"); |
| if (callable) { |
| PyObject *args; |
| PyObject *newclass = NULL; |
| args = Py_BuildValue( |
| "(OOO)", name, bases, methods); |
| if (args != NULL) { |
| newclass = PyEval_CallObject( |
| callable, args); |
| Py_DECREF(args); |
| } |
| if (callable != basetype) { |
| Py_DECREF(callable); |
| } |
| return newclass; |
| } |
| PyErr_SetString(PyExc_TypeError, |
| "base is not a class object"); |
| return NULL; |
| } |
| } |
| return PyClass_New(bases, methods, name); |
| } |
| |
| static int |
| exec_statement(f, prog, globals, locals) |
| PyFrameObject *f; |
| PyObject *prog; |
| PyObject *globals; |
| PyObject *locals; |
| { |
| char *s; |
| int n; |
| PyObject *v; |
| int plain = 0; |
| |
| if (PyTuple_Check(prog) && globals == Py_None && locals == Py_None && |
| ((n = PyTuple_Size(prog)) == 2 || n == 3)) { |
| /* Backward compatibility hack */ |
| globals = PyTuple_GetItem(prog, 1); |
| if (n == 3) |
| locals = PyTuple_GetItem(prog, 2); |
| prog = PyTuple_GetItem(prog, 0); |
| } |
| if (globals == Py_None) { |
| globals = PyEval_GetGlobals(); |
| if (locals == Py_None) { |
| locals = PyEval_GetLocals(); |
| plain = 1; |
| } |
| } |
| else if (locals == Py_None) |
| locals = globals; |
| if (!PyString_Check(prog) && |
| !PyCode_Check(prog) && |
| !PyFile_Check(prog)) { |
| PyErr_SetString(PyExc_TypeError, |
| "exec 1st arg must be string, code or file object"); |
| return -1; |
| } |
| if (!PyDict_Check(globals) || !PyDict_Check(locals)) { |
| PyErr_SetString(PyExc_TypeError, |
| "exec 2nd/3rd args must be dict or None"); |
| return -1; |
| } |
| if (PyDict_GetItemString(globals, "__builtins__") == NULL) |
| PyDict_SetItemString(globals, "__builtins__", f->f_builtins); |
| if (PyCode_Check(prog)) { |
| v = PyEval_EvalCode((PyCodeObject *) prog, |
| globals, locals); |
| if (v == NULL) |
| return -1; |
| Py_DECREF(v); |
| return 0; |
| } |
| if (PyFile_Check(prog)) { |
| FILE *fp = PyFile_AsFile(prog); |
| char *name = PyString_AsString(PyFile_Name(prog)); |
| if (PyRun_File(fp, name, Py_file_input, |
| globals, locals) == NULL) |
| return -1; |
| return 0; |
| } |
| s = PyString_AsString(prog); |
| if ((int)strlen(s) != PyString_Size(prog)) { |
| PyErr_SetString(PyExc_ValueError, |
| "embedded '\\0' in exec string"); |
| return -1; |
| } |
| v = PyRun_String(s, Py_file_input, globals, locals); |
| if (v == NULL) |
| return -1; |
| Py_DECREF(v); |
| if (plain) |
| PyFrame_LocalsToFast(f, 0); |
| return 0; |
| } |
| |
| /* Hack for ni.py */ |
| static PyObject * |
| find_from_args(f, nexti) |
| PyFrameObject *f; |
| int nexti; |
| { |
| int opcode; |
| int oparg; |
| PyObject *list, *name; |
| unsigned char *next_instr; |
| |
| _PyCode_GETCODEPTR(f->f_code, &next_instr); |
| next_instr += nexti; |
| |
| opcode = (*next_instr++); |
| if (opcode != IMPORT_FROM) { |
| Py_INCREF(Py_None); |
| return Py_None; |
| } |
| |
| list = PyList_New(0); |
| if (list == NULL) |
| return NULL; |
| |
| do { |
| oparg = (next_instr[1]<<8) + next_instr[0]; |
| next_instr += 2; |
| name = Getnamev(f, oparg); |
| if (PyList_Append(list, name) < 0) { |
| Py_DECREF(list); |
| break; |
| } |
| opcode = (*next_instr++); |
| } while (opcode == IMPORT_FROM); |
| |
| return list; |
| } |
| |
| |
| #ifdef DYNAMIC_EXECUTION_PROFILE |
| |
| PyObject * |
| getarray(a) |
| long a[256]; |
| { |
| int i; |
| PyObject *l = PyList_New(256); |
| if (l == NULL) return NULL; |
| for (i = 0; i < 256; i++) { |
| PyObject *x = PyInt_FromLong(a[i]); |
| if (x == NULL) { |
| Py_DECREF(l); |
| return NULL; |
| } |
| PyList_SetItem(l, i, x); |
| } |
| for (i = 0; i < 256; i++) |
| a[i] = 0; |
| return l; |
| } |
| |
| PyObject * |
| _Py_GetDXProfile(self, args) |
| PyObject *self, *args; |
| { |
| #ifndef DXPAIRS |
| return getarray(dxp); |
| #else |
| int i; |
| PyObject *l = PyList_New(257); |
| if (l == NULL) return NULL; |
| for (i = 0; i < 257; i++) { |
| PyObject *x = getarray(dxpairs[i]); |
| if (x == NULL) { |
| Py_DECREF(l); |
| return NULL; |
| } |
| PyList_SetItem(l, i, x); |
| } |
| return l; |
| #endif |
| } |
| |
| #endif |