| |
| /* Execute compiled code */ |
| |
| /* XXX TO DO: |
| XXX speed up searching for keywords by using a dictionary |
| XXX document it! |
| */ |
| |
| /* enable more aggressive intra-module optimizations, where available */ |
| #define PY_LOCAL_AGGRESSIVE |
| |
| #include "Python.h" |
| #include "internal/pystate.h" |
| |
| #include "code.h" |
| #include "dictobject.h" |
| #include "frameobject.h" |
| #include "opcode.h" |
| #include "pydtrace.h" |
| #include "setobject.h" |
| #include "structmember.h" |
| |
| #include <ctype.h> |
| |
| #ifdef Py_DEBUG |
| /* For debugging the interpreter: */ |
| #define LLTRACE 1 /* Low-level trace feature */ |
| #define CHECKEXC 1 /* Double-check exception checking */ |
| #endif |
| |
| /* Private API for the LOAD_METHOD opcode. */ |
| extern int _PyObject_GetMethod(PyObject *, PyObject *, PyObject **); |
| |
| typedef PyObject *(*callproc)(PyObject *, PyObject *, PyObject *); |
| |
| /* Forward declarations */ |
| Py_LOCAL_INLINE(PyObject *) call_function(PyObject ***, Py_ssize_t, |
| PyObject *); |
| static PyObject * do_call_core(PyObject *, PyObject *, PyObject *); |
| |
| #ifdef LLTRACE |
| static int lltrace; |
| static int prtrace(PyObject *, const char *); |
| #endif |
| static int call_trace(Py_tracefunc, PyObject *, |
| PyThreadState *, PyFrameObject *, |
| int, PyObject *); |
| static int call_trace_protected(Py_tracefunc, PyObject *, |
| PyThreadState *, PyFrameObject *, |
| int, PyObject *); |
| static void call_exc_trace(Py_tracefunc, PyObject *, |
| PyThreadState *, PyFrameObject *); |
| static int maybe_call_line_trace(Py_tracefunc, PyObject *, |
| PyThreadState *, PyFrameObject *, |
| int *, int *, int *); |
| static void maybe_dtrace_line(PyFrameObject *, int *, int *, int *); |
| static void dtrace_function_entry(PyFrameObject *); |
| static void dtrace_function_return(PyFrameObject *); |
| |
| static PyObject * cmp_outcome(int, PyObject *, PyObject *); |
| static PyObject * import_name(PyFrameObject *, PyObject *, PyObject *, |
| PyObject *); |
| static PyObject * import_from(PyObject *, PyObject *); |
| static int import_all_from(PyObject *, PyObject *); |
| static void format_exc_check_arg(PyObject *, const char *, PyObject *); |
| static void format_exc_unbound(PyCodeObject *co, int oparg); |
| static PyObject * unicode_concatenate(PyObject *, PyObject *, |
| PyFrameObject *, const _Py_CODEUNIT *); |
| static PyObject * special_lookup(PyObject *, _Py_Identifier *); |
| static int check_args_iterable(PyObject *func, PyObject *vararg); |
| static void format_kwargs_mapping_error(PyObject *func, PyObject *kwargs); |
| |
| #define NAME_ERROR_MSG \ |
| "name '%.200s' is not defined" |
| #define UNBOUNDLOCAL_ERROR_MSG \ |
| "local variable '%.200s' referenced before assignment" |
| #define UNBOUNDFREE_ERROR_MSG \ |
| "free variable '%.200s' referenced before assignment" \ |
| " in enclosing scope" |
| |
| /* 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 |
| |
| #define GIL_REQUEST _Py_atomic_load_relaxed(&_PyRuntime.ceval.gil_drop_request) |
| |
| /* This can set eval_breaker to 0 even though gil_drop_request became |
| 1. We believe this is all right because the eval loop will release |
| the GIL eventually anyway. */ |
| #define COMPUTE_EVAL_BREAKER() \ |
| _Py_atomic_store_relaxed( \ |
| &_PyRuntime.ceval.eval_breaker, \ |
| GIL_REQUEST | \ |
| _Py_atomic_load_relaxed(&_PyRuntime.ceval.pending.calls_to_do) | \ |
| _PyRuntime.ceval.pending.async_exc) |
| |
| #define SET_GIL_DROP_REQUEST() \ |
| do { \ |
| _Py_atomic_store_relaxed(&_PyRuntime.ceval.gil_drop_request, 1); \ |
| _Py_atomic_store_relaxed(&_PyRuntime.ceval.eval_breaker, 1); \ |
| } while (0) |
| |
| #define RESET_GIL_DROP_REQUEST() \ |
| do { \ |
| _Py_atomic_store_relaxed(&_PyRuntime.ceval.gil_drop_request, 0); \ |
| COMPUTE_EVAL_BREAKER(); \ |
| } while (0) |
| |
| /* Pending calls are only modified under pending_lock */ |
| #define SIGNAL_PENDING_CALLS() \ |
| do { \ |
| _Py_atomic_store_relaxed(&_PyRuntime.ceval.pending.calls_to_do, 1); \ |
| _Py_atomic_store_relaxed(&_PyRuntime.ceval.eval_breaker, 1); \ |
| } while (0) |
| |
| #define UNSIGNAL_PENDING_CALLS() \ |
| do { \ |
| _Py_atomic_store_relaxed(&_PyRuntime.ceval.pending.calls_to_do, 0); \ |
| COMPUTE_EVAL_BREAKER(); \ |
| } while (0) |
| |
| #define SIGNAL_ASYNC_EXC() \ |
| do { \ |
| _PyRuntime.ceval.pending.async_exc = 1; \ |
| _Py_atomic_store_relaxed(&_PyRuntime.ceval.eval_breaker, 1); \ |
| } while (0) |
| |
| #define UNSIGNAL_ASYNC_EXC() \ |
| do { \ |
| _PyRuntime.ceval.pending.async_exc = 0; \ |
| COMPUTE_EVAL_BREAKER(); \ |
| } while (0) |
| |
| |
| #ifdef HAVE_ERRNO_H |
| #include <errno.h> |
| #endif |
| #include "pythread.h" |
| #include "ceval_gil.h" |
| |
| int |
| PyEval_ThreadsInitialized(void) |
| { |
| return gil_created(); |
| } |
| |
| void |
| PyEval_InitThreads(void) |
| { |
| if (gil_created()) |
| return; |
| create_gil(); |
| take_gil(PyThreadState_GET()); |
| _PyRuntime.ceval.pending.main_thread = PyThread_get_thread_ident(); |
| if (!_PyRuntime.ceval.pending.lock) |
| _PyRuntime.ceval.pending.lock = PyThread_allocate_lock(); |
| } |
| |
| void |
| _PyEval_FiniThreads(void) |
| { |
| if (!gil_created()) |
| return; |
| destroy_gil(); |
| assert(!gil_created()); |
| } |
| |
| void |
| PyEval_AcquireLock(void) |
| { |
| PyThreadState *tstate = PyThreadState_GET(); |
| if (tstate == NULL) |
| Py_FatalError("PyEval_AcquireLock: current thread state is NULL"); |
| take_gil(tstate); |
| } |
| |
| void |
| PyEval_ReleaseLock(void) |
| { |
| /* This function must succeed when the current thread state is NULL. |
| We therefore avoid PyThreadState_GET() which dumps a fatal error |
| in debug mode. |
| */ |
| drop_gil((PyThreadState*)_Py_atomic_load_relaxed( |
| &_PyThreadState_Current)); |
| } |
| |
| void |
| PyEval_AcquireThread(PyThreadState *tstate) |
| { |
| if (tstate == NULL) |
| Py_FatalError("PyEval_AcquireThread: NULL new thread state"); |
| /* Check someone has called PyEval_InitThreads() to create the lock */ |
| assert(gil_created()); |
| take_gil(tstate); |
| if (PyThreadState_Swap(tstate) != NULL) |
| Py_FatalError( |
| "PyEval_AcquireThread: non-NULL old thread state"); |
| } |
| |
| void |
| PyEval_ReleaseThread(PyThreadState *tstate) |
| { |
| if (tstate == NULL) |
| Py_FatalError("PyEval_ReleaseThread: NULL thread state"); |
| if (PyThreadState_Swap(NULL) != tstate) |
| Py_FatalError("PyEval_ReleaseThread: wrong thread state"); |
| drop_gil(tstate); |
| } |
| |
| /* This function is called from PyOS_AfterFork_Child to destroy all threads |
| * which are not running in the child process, and clear internal locks |
| * which might be held by those threads. |
| */ |
| |
| void |
| PyEval_ReInitThreads(void) |
| { |
| PyThreadState *current_tstate = PyThreadState_GET(); |
| |
| if (!gil_created()) |
| return; |
| recreate_gil(); |
| _PyRuntime.ceval.pending.lock = PyThread_allocate_lock(); |
| take_gil(current_tstate); |
| _PyRuntime.ceval.pending.main_thread = PyThread_get_thread_ident(); |
| |
| /* Destroy all threads except the current one */ |
| _PyThreadState_DeleteExcept(current_tstate); |
| } |
| |
| /* This function is used to signal that async exceptions are waiting to be |
| raised, therefore it is also useful in non-threaded builds. */ |
| |
| void |
| _PyEval_SignalAsyncExc(void) |
| { |
| SIGNAL_ASYNC_EXC(); |
| } |
| |
| /* 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(void) |
| { |
| PyThreadState *tstate = PyThreadState_Swap(NULL); |
| if (tstate == NULL) |
| Py_FatalError("PyEval_SaveThread: NULL tstate"); |
| if (gil_created()) |
| drop_gil(tstate); |
| return tstate; |
| } |
| |
| void |
| PyEval_RestoreThread(PyThreadState *tstate) |
| { |
| if (tstate == NULL) |
| Py_FatalError("PyEval_RestoreThread: NULL tstate"); |
| if (gil_created()) { |
| int err = errno; |
| take_gil(tstate); |
| /* _Py_Finalizing is protected by the GIL */ |
| if (_Py_IsFinalizing() && !_Py_CURRENTLY_FINALIZING(tstate)) { |
| drop_gil(tstate); |
| PyThread_exit_thread(); |
| Py_UNREACHABLE(); |
| } |
| errno = err; |
| } |
| 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! |
| |
| Any thread can schedule pending calls, but only the main thread |
| will execute them. |
| There is no facility to schedule calls to a particular thread, but |
| that should be easy to change, should that ever be required. In |
| that case, the static variables here should go into the python |
| threadstate. |
| */ |
| |
| void |
| _PyEval_SignalReceived(void) |
| { |
| /* bpo-30703: Function called when the C signal handler of Python gets a |
| signal. We cannot queue a callback using Py_AddPendingCall() since |
| that function is not async-signal-safe. */ |
| SIGNAL_PENDING_CALLS(); |
| } |
| |
| /* This implementation is thread-safe. It allows |
| scheduling to be made from any thread, and even from an executing |
| callback. |
| */ |
| |
| int |
| Py_AddPendingCall(int (*func)(void *), void *arg) |
| { |
| int i, j, result=0; |
| PyThread_type_lock lock = _PyRuntime.ceval.pending.lock; |
| |
| /* try a few times for the lock. Since this mechanism is used |
| * for signal handling (on the main thread), there is a (slim) |
| * chance that a signal is delivered on the same thread while we |
| * hold the lock during the Py_MakePendingCalls() function. |
| * This avoids a deadlock in that case. |
| * Note that signals can be delivered on any thread. In particular, |
| * on Windows, a SIGINT is delivered on a system-created worker |
| * thread. |
| * We also check for lock being NULL, in the unlikely case that |
| * this function is called before any bytecode evaluation takes place. |
| */ |
| if (lock != NULL) { |
| for (i = 0; i<100; i++) { |
| if (PyThread_acquire_lock(lock, NOWAIT_LOCK)) |
| break; |
| } |
| if (i == 100) |
| return -1; |
| } |
| |
| i = _PyRuntime.ceval.pending.last; |
| j = (i + 1) % NPENDINGCALLS; |
| if (j == _PyRuntime.ceval.pending.first) { |
| result = -1; /* Queue full */ |
| } else { |
| _PyRuntime.ceval.pending.calls[i].func = func; |
| _PyRuntime.ceval.pending.calls[i].arg = arg; |
| _PyRuntime.ceval.pending.last = j; |
| } |
| /* signal main loop */ |
| SIGNAL_PENDING_CALLS(); |
| if (lock != NULL) |
| PyThread_release_lock(lock); |
| return result; |
| } |
| |
| int |
| Py_MakePendingCalls(void) |
| { |
| static int busy = 0; |
| int i; |
| int r = 0; |
| |
| assert(PyGILState_Check()); |
| |
| if (!_PyRuntime.ceval.pending.lock) { |
| /* initial allocation of the lock */ |
| _PyRuntime.ceval.pending.lock = PyThread_allocate_lock(); |
| if (_PyRuntime.ceval.pending.lock == NULL) |
| return -1; |
| } |
| |
| /* only service pending calls on main thread */ |
| if (_PyRuntime.ceval.pending.main_thread && |
| PyThread_get_thread_ident() != _PyRuntime.ceval.pending.main_thread) |
| { |
| return 0; |
| } |
| /* don't perform recursive pending calls */ |
| if (busy) |
| return 0; |
| busy = 1; |
| /* unsignal before starting to call callbacks, so that any callback |
| added in-between re-signals */ |
| UNSIGNAL_PENDING_CALLS(); |
| |
| /* Python signal handler doesn't really queue a callback: it only signals |
| that a signal was received, see _PyEval_SignalReceived(). */ |
| if (PyErr_CheckSignals() < 0) { |
| goto error; |
| } |
| |
| /* perform a bounded number of calls, in case of recursion */ |
| for (i=0; i<NPENDINGCALLS; i++) { |
| int j; |
| int (*func)(void *); |
| void *arg = NULL; |
| |
| /* pop one item off the queue while holding the lock */ |
| PyThread_acquire_lock(_PyRuntime.ceval.pending.lock, WAIT_LOCK); |
| j = _PyRuntime.ceval.pending.first; |
| if (j == _PyRuntime.ceval.pending.last) { |
| func = NULL; /* Queue empty */ |
| } else { |
| func = _PyRuntime.ceval.pending.calls[j].func; |
| arg = _PyRuntime.ceval.pending.calls[j].arg; |
| _PyRuntime.ceval.pending.first = (j + 1) % NPENDINGCALLS; |
| } |
| PyThread_release_lock(_PyRuntime.ceval.pending.lock); |
| /* having released the lock, perform the callback */ |
| if (func == NULL) |
| break; |
| r = func(arg); |
| if (r) { |
| goto error; |
| } |
| } |
| |
| busy = 0; |
| return r; |
| |
| error: |
| busy = 0; |
| SIGNAL_PENDING_CALLS(); /* We're not done yet */ |
| return -1; |
| } |
| |
| /* The interpreter's recursion limit */ |
| |
| #ifndef Py_DEFAULT_RECURSION_LIMIT |
| #define Py_DEFAULT_RECURSION_LIMIT 1000 |
| #endif |
| |
| int _Py_CheckRecursionLimit = Py_DEFAULT_RECURSION_LIMIT; |
| |
| void |
| _PyEval_Initialize(struct _ceval_runtime_state *state) |
| { |
| state->recursion_limit = Py_DEFAULT_RECURSION_LIMIT; |
| _Py_CheckRecursionLimit = Py_DEFAULT_RECURSION_LIMIT; |
| _gil_initialize(&state->gil); |
| } |
| |
| int |
| Py_GetRecursionLimit(void) |
| { |
| return _PyRuntime.ceval.recursion_limit; |
| } |
| |
| void |
| Py_SetRecursionLimit(int new_limit) |
| { |
| _PyRuntime.ceval.recursion_limit = new_limit; |
| _Py_CheckRecursionLimit = _PyRuntime.ceval.recursion_limit; |
| } |
| |
| /* the macro Py_EnterRecursiveCall() only calls _Py_CheckRecursiveCall() |
| if the recursion_depth reaches _Py_CheckRecursionLimit. |
| If USE_STACKCHECK, the macro decrements _Py_CheckRecursionLimit |
| to guarantee that _Py_CheckRecursiveCall() is regularly called. |
| Without USE_STACKCHECK, there is no need for this. */ |
| int |
| _Py_CheckRecursiveCall(const char *where) |
| { |
| PyThreadState *tstate = PyThreadState_GET(); |
| int recursion_limit = _PyRuntime.ceval.recursion_limit; |
| |
| #ifdef USE_STACKCHECK |
| tstate->stackcheck_counter = 0; |
| if (PyOS_CheckStack()) { |
| --tstate->recursion_depth; |
| PyErr_SetString(PyExc_MemoryError, "Stack overflow"); |
| return -1; |
| } |
| /* Needed for ABI backwards-compatibility (see bpo-31857) */ |
| _Py_CheckRecursionLimit = recursion_limit; |
| #endif |
| if (tstate->recursion_critical) |
| /* Somebody asked that we don't check for recursion. */ |
| return 0; |
| if (tstate->overflowed) { |
| if (tstate->recursion_depth > recursion_limit + 50) { |
| /* Overflowing while handling an overflow. Give up. */ |
| Py_FatalError("Cannot recover from stack overflow."); |
| } |
| return 0; |
| } |
| if (tstate->recursion_depth > recursion_limit) { |
| --tstate->recursion_depth; |
| tstate->overflowed = 1; |
| PyErr_Format(PyExc_RecursionError, |
| "maximum recursion depth exceeded%s", |
| where); |
| return -1; |
| } |
| return 0; |
| } |
| |
| /* Status code for main loop (reason for stack unwind) */ |
| enum why_code { |
| WHY_NOT = 0x0001, /* No error */ |
| WHY_EXCEPTION = 0x0002, /* Exception occurred */ |
| WHY_RETURN = 0x0008, /* 'return' statement */ |
| WHY_BREAK = 0x0010, /* 'break' statement */ |
| WHY_CONTINUE = 0x0020, /* 'continue' statement */ |
| WHY_YIELD = 0x0040, /* 'yield' operator */ |
| WHY_SILENCED = 0x0080 /* Exception silenced by 'with' */ |
| }; |
| |
| static int do_raise(PyObject *, PyObject *); |
| static int unpack_iterable(PyObject *, int, int, PyObject **); |
| |
| #define _Py_TracingPossible _PyRuntime.ceval.tracing_possible |
| |
| |
| PyObject * |
| PyEval_EvalCode(PyObject *co, PyObject *globals, PyObject *locals) |
| { |
| return PyEval_EvalCodeEx(co, |
| globals, locals, |
| (PyObject **)NULL, 0, |
| (PyObject **)NULL, 0, |
| (PyObject **)NULL, 0, |
| NULL, NULL); |
| } |
| |
| |
| /* Interpreter main loop */ |
| |
| PyObject * |
| PyEval_EvalFrame(PyFrameObject *f) { |
| /* This is for backward compatibility with extension modules that |
| used this API; core interpreter code should call |
| PyEval_EvalFrameEx() */ |
| return PyEval_EvalFrameEx(f, 0); |
| } |
| |
| PyObject * |
| PyEval_EvalFrameEx(PyFrameObject *f, int throwflag) |
| { |
| PyThreadState *tstate = PyThreadState_GET(); |
| return tstate->interp->eval_frame(f, throwflag); |
| } |
| |
| PyObject* _Py_HOT_FUNCTION |
| _PyEval_EvalFrameDefault(PyFrameObject *f, int throwflag) |
| { |
| #ifdef DXPAIRS |
| int lastopcode = 0; |
| #endif |
| PyObject **stack_pointer; /* Next free slot in value stack */ |
| const _Py_CODEUNIT *next_instr; |
| int opcode; /* Current opcode */ |
| int oparg; /* Current opcode argument, if any */ |
| enum why_code why; /* Reason for block stack unwind */ |
| PyObject **fastlocals, **freevars; |
| PyObject *retval = NULL; /* Return value */ |
| PyThreadState *tstate = PyThreadState_GET(); |
| PyCodeObject *co; |
| |
| /* when tracing we set things up so that |
| |
| not (instr_lb <= current_bytecode_offset < instr_ub) |
| |
| is true when the line being executed has changed. The |
| initial values are such as to make this false the first |
| time it is tested. */ |
| int instr_ub = -1, instr_lb = 0, instr_prev = -1; |
| |
| const _Py_CODEUNIT *first_instr; |
| PyObject *names; |
| PyObject *consts; |
| |
| #ifdef LLTRACE |
| _Py_IDENTIFIER(__ltrace__); |
| #endif |
| |
| /* Computed GOTOs, or |
| the-optimization-commonly-but-improperly-known-as-"threaded code" |
| using gcc's labels-as-values extension |
| (http://gcc.gnu.org/onlinedocs/gcc/Labels-as-Values.html). |
| |
| The traditional bytecode evaluation loop uses a "switch" statement, which |
| decent compilers will optimize as a single indirect branch instruction |
| combined with a lookup table of jump addresses. However, since the |
| indirect jump instruction is shared by all opcodes, the CPU will have a |
| hard time making the right prediction for where to jump next (actually, |
| it will be always wrong except in the uncommon case of a sequence of |
| several identical opcodes). |
| |
| "Threaded code" in contrast, uses an explicit jump table and an explicit |
| indirect jump instruction at the end of each opcode. Since the jump |
| instruction is at a different address for each opcode, the CPU will make a |
| separate prediction for each of these instructions, which is equivalent to |
| predicting the second opcode of each opcode pair. These predictions have |
| a much better chance to turn out valid, especially in small bytecode loops. |
| |
| A mispredicted branch on a modern CPU flushes the whole pipeline and |
| can cost several CPU cycles (depending on the pipeline depth), |
| and potentially many more instructions (depending on the pipeline width). |
| A correctly predicted branch, however, is nearly free. |
| |
| At the time of this writing, the "threaded code" version is up to 15-20% |
| faster than the normal "switch" version, depending on the compiler and the |
| CPU architecture. |
| |
| We disable the optimization if DYNAMIC_EXECUTION_PROFILE is defined, |
| because it would render the measurements invalid. |
| |
| |
| NOTE: care must be taken that the compiler doesn't try to "optimize" the |
| indirect jumps by sharing them between all opcodes. Such optimizations |
| can be disabled on gcc by using the -fno-gcse flag (or possibly |
| -fno-crossjumping). |
| */ |
| |
| #ifdef DYNAMIC_EXECUTION_PROFILE |
| #undef USE_COMPUTED_GOTOS |
| #define USE_COMPUTED_GOTOS 0 |
| #endif |
| |
| #ifdef HAVE_COMPUTED_GOTOS |
| #ifndef USE_COMPUTED_GOTOS |
| #define USE_COMPUTED_GOTOS 1 |
| #endif |
| #else |
| #if defined(USE_COMPUTED_GOTOS) && USE_COMPUTED_GOTOS |
| #error "Computed gotos are not supported on this compiler." |
| #endif |
| #undef USE_COMPUTED_GOTOS |
| #define USE_COMPUTED_GOTOS 0 |
| #endif |
| |
| #if USE_COMPUTED_GOTOS |
| /* Import the static jump table */ |
| #include "opcode_targets.h" |
| |
| #define TARGET(op) \ |
| TARGET_##op: \ |
| case op: |
| |
| #define DISPATCH() \ |
| { \ |
| if (!_Py_atomic_load_relaxed(&_PyRuntime.ceval.eval_breaker)) { \ |
| FAST_DISPATCH(); \ |
| } \ |
| continue; \ |
| } |
| |
| #ifdef LLTRACE |
| #define FAST_DISPATCH() \ |
| { \ |
| if (!lltrace && !_Py_TracingPossible && !PyDTrace_LINE_ENABLED()) { \ |
| f->f_lasti = INSTR_OFFSET(); \ |
| NEXTOPARG(); \ |
| goto *opcode_targets[opcode]; \ |
| } \ |
| goto fast_next_opcode; \ |
| } |
| #else |
| #define FAST_DISPATCH() \ |
| { \ |
| if (!_Py_TracingPossible && !PyDTrace_LINE_ENABLED()) { \ |
| f->f_lasti = INSTR_OFFSET(); \ |
| NEXTOPARG(); \ |
| goto *opcode_targets[opcode]; \ |
| } \ |
| goto fast_next_opcode; \ |
| } |
| #endif |
| |
| #else |
| #define TARGET(op) \ |
| case op: |
| |
| #define DISPATCH() continue |
| #define FAST_DISPATCH() goto fast_next_opcode |
| #endif |
| |
| |
| /* Tuple access macros */ |
| |
| #ifndef Py_DEBUG |
| #define GETITEM(v, i) PyTuple_GET_ITEM((PyTupleObject *)(v), (i)) |
| #else |
| #define GETITEM(v, i) PyTuple_GetItem((v), (i)) |
| #endif |
| |
| /* Code access macros */ |
| |
| /* The integer overflow is checked by an assertion below. */ |
| #define INSTR_OFFSET() \ |
| (sizeof(_Py_CODEUNIT) * (int)(next_instr - first_instr)) |
| #define NEXTOPARG() do { \ |
| _Py_CODEUNIT word = *next_instr; \ |
| opcode = _Py_OPCODE(word); \ |
| oparg = _Py_OPARG(word); \ |
| next_instr++; \ |
| } while (0) |
| #define JUMPTO(x) (next_instr = first_instr + (x) / sizeof(_Py_CODEUNIT)) |
| #define JUMPBY(x) (next_instr += (x) / sizeof(_Py_CODEUNIT)) |
| |
| /* 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 POP_JUMP_IF_FALSE or POP_JUMP_IF_TRUE. |
| |
| Verifying the prediction costs a single high-speed test of a register |
| variable against a constant. If the pairing was good, then the |
| processor's own internal branch predication has a high likelihood of |
| success, resulting in a nearly zero-overhead transition to the |
| next opcode. A successful prediction saves a trip through the eval-loop |
| including its unpredictable switch-case branch. Combined with the |
| processor's internal branch prediction, a successful PREDICT has the |
| effect of making the two opcodes run as if they were a single new opcode |
| with the bodies combined. |
| |
| If collecting opcode statistics, your choices are to either keep the |
| predictions turned-on and interpret the results as if some opcodes |
| had been combined or turn-off predictions so that the opcode frequency |
| counter updates for both opcodes. |
| |
| Opcode prediction is disabled with threaded code, since the latter allows |
| the CPU to record separate branch prediction information for each |
| opcode. |
| |
| */ |
| |
| #if defined(DYNAMIC_EXECUTION_PROFILE) || USE_COMPUTED_GOTOS |
| #define PREDICT(op) if (0) goto PRED_##op |
| #else |
| #define PREDICT(op) \ |
| do{ \ |
| _Py_CODEUNIT word = *next_instr; \ |
| opcode = _Py_OPCODE(word); \ |
| if (opcode == op){ \ |
| oparg = _Py_OPARG(word); \ |
| next_instr++; \ |
| goto PRED_##op; \ |
| } \ |
| } while(0) |
| #endif |
| #define PREDICTED(op) PRED_##op: |
| |
| |
| /* Stack manipulation macros */ |
| |
| /* The stack can grow at most MAXINT deep, as co_nlocals and |
| co_stacksize are ints. */ |
| #define STACK_LEVEL() ((int)(stack_pointer - f->f_valuestack)) |
| #define EMPTY() (STACK_LEVEL() == 0) |
| #define TOP() (stack_pointer[-1]) |
| #define SECOND() (stack_pointer[-2]) |
| #define THIRD() (stack_pointer[-3]) |
| #define FOURTH() (stack_pointer[-4]) |
| #define PEEK(n) (stack_pointer[-(n)]) |
| #define SET_TOP(v) (stack_pointer[-1] = (v)) |
| #define SET_SECOND(v) (stack_pointer[-2] = (v)) |
| #define SET_THIRD(v) (stack_pointer[-3] = (v)) |
| #define SET_FOURTH(v) (stack_pointer[-4] = (v)) |
| #define SET_VALUE(n, v) (stack_pointer[-(n)] = (v)) |
| #define BASIC_STACKADJ(n) (stack_pointer += n) |
| #define BASIC_PUSH(v) (*stack_pointer++ = (v)) |
| #define BASIC_POP() (*--stack_pointer) |
| |
| #ifdef LLTRACE |
| #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 STACKADJ(n) { (void)(BASIC_STACKADJ(n), \ |
| lltrace && prtrace(TOP(), "stackadj")); \ |
| assert(STACK_LEVEL() <= co->co_stacksize); } |
| #define EXT_POP(STACK_POINTER) ((void)(lltrace && \ |
| prtrace((STACK_POINTER)[-1], "ext_pop")), \ |
| *--(STACK_POINTER)) |
| #else |
| #define PUSH(v) BASIC_PUSH(v) |
| #define POP() BASIC_POP() |
| #define STACKADJ(n) BASIC_STACKADJ(n) |
| #define EXT_POP(STACK_POINTER) (*--(STACK_POINTER)) |
| #endif |
| |
| /* Local variable macros */ |
| |
| #define GETLOCAL(i) (fastlocals[i]) |
| |
| /* The SETLOCAL() macro must not DECREF the local variable in-place and |
| then store the new value; it must copy the old value to a temporary |
| value, then store the new value, and then DECREF the temporary value. |
| This is because it is possible that during the DECREF the frame is |
| accessed by other code (e.g. a __del__ method or gc.collect()) and the |
| variable would be pointing to already-freed memory. */ |
| #define SETLOCAL(i, value) do { PyObject *tmp = GETLOCAL(i); \ |
| GETLOCAL(i) = value; \ |
| Py_XDECREF(tmp); } while (0) |
| |
| |
| #define UNWIND_BLOCK(b) \ |
| while (STACK_LEVEL() > (b)->b_level) { \ |
| PyObject *v = POP(); \ |
| Py_XDECREF(v); \ |
| } |
| |
| #define UNWIND_EXCEPT_HANDLER(b) \ |
| do { \ |
| PyObject *type, *value, *traceback; \ |
| _PyErr_StackItem *exc_info; \ |
| assert(STACK_LEVEL() >= (b)->b_level + 3); \ |
| while (STACK_LEVEL() > (b)->b_level + 3) { \ |
| value = POP(); \ |
| Py_XDECREF(value); \ |
| } \ |
| exc_info = tstate->exc_info; \ |
| type = exc_info->exc_type; \ |
| value = exc_info->exc_value; \ |
| traceback = exc_info->exc_traceback; \ |
| exc_info->exc_type = POP(); \ |
| exc_info->exc_value = POP(); \ |
| exc_info->exc_traceback = POP(); \ |
| Py_XDECREF(type); \ |
| Py_XDECREF(value); \ |
| Py_XDECREF(traceback); \ |
| } while(0) |
| |
| /* Start of code */ |
| |
| /* push frame */ |
| if (Py_EnterRecursiveCall("")) |
| return NULL; |
| |
| tstate->frame = f; |
| |
| if (tstate->use_tracing) { |
| if (tstate->c_tracefunc != NULL) { |
| /* tstate->c_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 is also called |
| whenever an exception is detected. */ |
| if (call_trace_protected(tstate->c_tracefunc, |
| tstate->c_traceobj, |
| tstate, f, PyTrace_CALL, Py_None)) { |
| /* Trace function raised an error */ |
| goto exit_eval_frame; |
| } |
| } |
| if (tstate->c_profilefunc != NULL) { |
| /* Similar for c_profilefunc, except it needn't |
| return itself and isn't called for "line" events */ |
| if (call_trace_protected(tstate->c_profilefunc, |
| tstate->c_profileobj, |
| tstate, f, PyTrace_CALL, Py_None)) { |
| /* Profile function raised an error */ |
| goto exit_eval_frame; |
| } |
| } |
| } |
| |
| if (PyDTrace_FUNCTION_ENTRY_ENABLED()) |
| dtrace_function_entry(f); |
| |
| co = f->f_code; |
| names = co->co_names; |
| consts = co->co_consts; |
| fastlocals = f->f_localsplus; |
| freevars = f->f_localsplus + co->co_nlocals; |
| assert(PyBytes_Check(co->co_code)); |
| assert(PyBytes_GET_SIZE(co->co_code) <= INT_MAX); |
| assert(PyBytes_GET_SIZE(co->co_code) % sizeof(_Py_CODEUNIT) == 0); |
| assert(_Py_IS_ALIGNED(PyBytes_AS_STRING(co->co_code), sizeof(_Py_CODEUNIT))); |
| first_instr = (_Py_CODEUNIT *) PyBytes_AS_STRING(co->co_code); |
| /* |
| f->f_lasti refers to the index of the last instruction, |
| unless it's -1 in which case next_instr should be first_instr. |
| |
| YIELD_FROM sets f_lasti to itself, in order to repeatedly yield |
| multiple values. |
| |
| When the PREDICT() macros are enabled, some opcode pairs follow in |
| direct succession without updating f->f_lasti. A successful |
| prediction effectively links the two codes together as if they |
| were a single new opcode; accordingly,f->f_lasti will point to |
| the first code in the pair (for instance, GET_ITER followed by |
| FOR_ITER is effectively a single opcode and f->f_lasti will point |
| to the beginning of the combined pair.) |
| */ |
| assert(f->f_lasti >= -1); |
| next_instr = first_instr; |
| if (f->f_lasti >= 0) { |
| assert(f->f_lasti % sizeof(_Py_CODEUNIT) == 0); |
| next_instr += f->f_lasti / sizeof(_Py_CODEUNIT) + 1; |
| } |
| stack_pointer = f->f_stacktop; |
| assert(stack_pointer != NULL); |
| f->f_stacktop = NULL; /* remains NULL unless yield suspends frame */ |
| f->f_executing = 1; |
| |
| |
| #ifdef LLTRACE |
| lltrace = _PyDict_GetItemId(f->f_globals, &PyId___ltrace__) != NULL; |
| #endif |
| |
| why = WHY_NOT; |
| |
| if (throwflag) /* support for generator.throw() */ |
| goto error; |
| |
| #ifdef Py_DEBUG |
| /* PyEval_EvalFrameEx() must not be called with an exception set, |
| because it can clear it (directly or indirectly) and so the |
| caller loses its exception */ |
| assert(!PyErr_Occurred()); |
| #endif |
| |
| for (;;) { |
| assert(stack_pointer >= f->f_valuestack); /* else underflow */ |
| assert(STACK_LEVEL() <= co->co_stacksize); /* else overflow */ |
| assert(!PyErr_Occurred()); |
| |
| /* 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 |
| ``pendingcalls_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 (_Py_atomic_load_relaxed(&_PyRuntime.ceval.eval_breaker)) { |
| if (_Py_OPCODE(*next_instr) == SETUP_FINALLY || |
| _Py_OPCODE(*next_instr) == YIELD_FROM) { |
| /* Two cases where we skip running signal handlers and other |
| pending calls: |
| - If we're about to enter the try: of a try/finally (not |
| *very* useful, but might help in some cases and it's |
| traditional) |
| - If we're resuming a chain of nested 'yield from' or |
| 'await' calls, then each frame is parked with YIELD_FROM |
| as its next opcode. If the user hit control-C we want to |
| wait until we've reached the innermost frame before |
| running the signal handler and raising KeyboardInterrupt |
| (see bpo-30039). |
| */ |
| goto fast_next_opcode; |
| } |
| if (_Py_atomic_load_relaxed( |
| &_PyRuntime.ceval.pending.calls_to_do)) |
| { |
| if (Py_MakePendingCalls() < 0) |
| goto error; |
| } |
| if (_Py_atomic_load_relaxed( |
| &_PyRuntime.ceval.gil_drop_request)) |
| { |
| /* Give another thread a chance */ |
| if (PyThreadState_Swap(NULL) != tstate) |
| Py_FatalError("ceval: tstate mix-up"); |
| drop_gil(tstate); |
| |
| /* Other threads may run now */ |
| |
| take_gil(tstate); |
| |
| /* Check if we should make a quick exit. */ |
| if (_Py_IsFinalizing() && |
| !_Py_CURRENTLY_FINALIZING(tstate)) |
| { |
| drop_gil(tstate); |
| PyThread_exit_thread(); |
| } |
| |
| if (PyThreadState_Swap(tstate) != NULL) |
| Py_FatalError("ceval: orphan tstate"); |
| } |
| /* Check for asynchronous exceptions. */ |
| if (tstate->async_exc != NULL) { |
| PyObject *exc = tstate->async_exc; |
| tstate->async_exc = NULL; |
| UNSIGNAL_ASYNC_EXC(); |
| PyErr_SetNone(exc); |
| Py_DECREF(exc); |
| goto error; |
| } |
| } |
| |
| fast_next_opcode: |
| f->f_lasti = INSTR_OFFSET(); |
| |
| if (PyDTrace_LINE_ENABLED()) |
| maybe_dtrace_line(f, &instr_lb, &instr_ub, &instr_prev); |
| |
| /* line-by-line tracing support */ |
| |
| if (_Py_TracingPossible && |
| tstate->c_tracefunc != NULL && !tstate->tracing) { |
| int err; |
| /* see maybe_call_line_trace |
| for expository comments */ |
| f->f_stacktop = stack_pointer; |
| |
| err = maybe_call_line_trace(tstate->c_tracefunc, |
| tstate->c_traceobj, |
| tstate, f, |
| &instr_lb, &instr_ub, &instr_prev); |
| /* Reload possibly changed frame fields */ |
| JUMPTO(f->f_lasti); |
| if (f->f_stacktop != NULL) { |
| stack_pointer = f->f_stacktop; |
| f->f_stacktop = NULL; |
| } |
| if (err) |
| /* trace function raised an exception */ |
| goto error; |
| } |
| |
| /* Extract opcode and argument */ |
| |
| NEXTOPARG(); |
| dispatch_opcode: |
| #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", |
| f->f_lasti, opcode, oparg); |
| } |
| else { |
| printf("%d: %d\n", |
| f->f_lasti, opcode); |
| } |
| } |
| #endif |
| |
| 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! */ |
| |
| TARGET(NOP) |
| FAST_DISPATCH(); |
| |
| TARGET(LOAD_FAST) { |
| PyObject *value = GETLOCAL(oparg); |
| if (value == NULL) { |
| format_exc_check_arg(PyExc_UnboundLocalError, |
| UNBOUNDLOCAL_ERROR_MSG, |
| PyTuple_GetItem(co->co_varnames, oparg)); |
| goto error; |
| } |
| Py_INCREF(value); |
| PUSH(value); |
| FAST_DISPATCH(); |
| } |
| |
| PREDICTED(LOAD_CONST); |
| TARGET(LOAD_CONST) { |
| PyObject *value = GETITEM(consts, oparg); |
| Py_INCREF(value); |
| PUSH(value); |
| FAST_DISPATCH(); |
| } |
| |
| PREDICTED(STORE_FAST); |
| TARGET(STORE_FAST) { |
| PyObject *value = POP(); |
| SETLOCAL(oparg, value); |
| FAST_DISPATCH(); |
| } |
| |
| TARGET(POP_TOP) { |
| PyObject *value = POP(); |
| Py_DECREF(value); |
| FAST_DISPATCH(); |
| } |
| |
| TARGET(ROT_TWO) { |
| PyObject *top = TOP(); |
| PyObject *second = SECOND(); |
| SET_TOP(second); |
| SET_SECOND(top); |
| FAST_DISPATCH(); |
| } |
| |
| TARGET(ROT_THREE) { |
| PyObject *top = TOP(); |
| PyObject *second = SECOND(); |
| PyObject *third = THIRD(); |
| SET_TOP(second); |
| SET_SECOND(third); |
| SET_THIRD(top); |
| FAST_DISPATCH(); |
| } |
| |
| TARGET(DUP_TOP) { |
| PyObject *top = TOP(); |
| Py_INCREF(top); |
| PUSH(top); |
| FAST_DISPATCH(); |
| } |
| |
| TARGET(DUP_TOP_TWO) { |
| PyObject *top = TOP(); |
| PyObject *second = SECOND(); |
| Py_INCREF(top); |
| Py_INCREF(second); |
| STACKADJ(2); |
| SET_TOP(top); |
| SET_SECOND(second); |
| FAST_DISPATCH(); |
| } |
| |
| TARGET(UNARY_POSITIVE) { |
| PyObject *value = TOP(); |
| PyObject *res = PyNumber_Positive(value); |
| Py_DECREF(value); |
| SET_TOP(res); |
| if (res == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(UNARY_NEGATIVE) { |
| PyObject *value = TOP(); |
| PyObject *res = PyNumber_Negative(value); |
| Py_DECREF(value); |
| SET_TOP(res); |
| if (res == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(UNARY_NOT) { |
| PyObject *value = TOP(); |
| int err = PyObject_IsTrue(value); |
| Py_DECREF(value); |
| if (err == 0) { |
| Py_INCREF(Py_True); |
| SET_TOP(Py_True); |
| DISPATCH(); |
| } |
| else if (err > 0) { |
| Py_INCREF(Py_False); |
| SET_TOP(Py_False); |
| DISPATCH(); |
| } |
| STACKADJ(-1); |
| goto error; |
| } |
| |
| TARGET(UNARY_INVERT) { |
| PyObject *value = TOP(); |
| PyObject *res = PyNumber_Invert(value); |
| Py_DECREF(value); |
| SET_TOP(res); |
| if (res == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(BINARY_POWER) { |
| PyObject *exp = POP(); |
| PyObject *base = TOP(); |
| PyObject *res = PyNumber_Power(base, exp, Py_None); |
| Py_DECREF(base); |
| Py_DECREF(exp); |
| SET_TOP(res); |
| if (res == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(BINARY_MULTIPLY) { |
| PyObject *right = POP(); |
| PyObject *left = TOP(); |
| PyObject *res = PyNumber_Multiply(left, right); |
| Py_DECREF(left); |
| Py_DECREF(right); |
| SET_TOP(res); |
| if (res == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(BINARY_MATRIX_MULTIPLY) { |
| PyObject *right = POP(); |
| PyObject *left = TOP(); |
| PyObject *res = PyNumber_MatrixMultiply(left, right); |
| Py_DECREF(left); |
| Py_DECREF(right); |
| SET_TOP(res); |
| if (res == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(BINARY_TRUE_DIVIDE) { |
| PyObject *divisor = POP(); |
| PyObject *dividend = TOP(); |
| PyObject *quotient = PyNumber_TrueDivide(dividend, divisor); |
| Py_DECREF(dividend); |
| Py_DECREF(divisor); |
| SET_TOP(quotient); |
| if (quotient == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(BINARY_FLOOR_DIVIDE) { |
| PyObject *divisor = POP(); |
| PyObject *dividend = TOP(); |
| PyObject *quotient = PyNumber_FloorDivide(dividend, divisor); |
| Py_DECREF(dividend); |
| Py_DECREF(divisor); |
| SET_TOP(quotient); |
| if (quotient == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(BINARY_MODULO) { |
| PyObject *divisor = POP(); |
| PyObject *dividend = TOP(); |
| PyObject *res; |
| if (PyUnicode_CheckExact(dividend) && ( |
| !PyUnicode_Check(divisor) || PyUnicode_CheckExact(divisor))) { |
| // fast path; string formatting, but not if the RHS is a str subclass |
| // (see issue28598) |
| res = PyUnicode_Format(dividend, divisor); |
| } else { |
| res = PyNumber_Remainder(dividend, divisor); |
| } |
| Py_DECREF(divisor); |
| Py_DECREF(dividend); |
| SET_TOP(res); |
| if (res == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(BINARY_ADD) { |
| PyObject *right = POP(); |
| PyObject *left = TOP(); |
| PyObject *sum; |
| /* NOTE(haypo): Please don't try to micro-optimize int+int on |
| CPython using bytecode, it is simply worthless. |
| See http://bugs.python.org/issue21955 and |
| http://bugs.python.org/issue10044 for the discussion. In short, |
| no patch shown any impact on a realistic benchmark, only a minor |
| speedup on microbenchmarks. */ |
| if (PyUnicode_CheckExact(left) && |
| PyUnicode_CheckExact(right)) { |
| sum = unicode_concatenate(left, right, f, next_instr); |
| /* unicode_concatenate consumed the ref to left */ |
| } |
| else { |
| sum = PyNumber_Add(left, right); |
| Py_DECREF(left); |
| } |
| Py_DECREF(right); |
| SET_TOP(sum); |
| if (sum == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(BINARY_SUBTRACT) { |
| PyObject *right = POP(); |
| PyObject *left = TOP(); |
| PyObject *diff = PyNumber_Subtract(left, right); |
| Py_DECREF(right); |
| Py_DECREF(left); |
| SET_TOP(diff); |
| if (diff == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(BINARY_SUBSCR) { |
| PyObject *sub = POP(); |
| PyObject *container = TOP(); |
| PyObject *res = PyObject_GetItem(container, sub); |
| Py_DECREF(container); |
| Py_DECREF(sub); |
| SET_TOP(res); |
| if (res == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(BINARY_LSHIFT) { |
| PyObject *right = POP(); |
| PyObject *left = TOP(); |
| PyObject *res = PyNumber_Lshift(left, right); |
| Py_DECREF(left); |
| Py_DECREF(right); |
| SET_TOP(res); |
| if (res == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(BINARY_RSHIFT) { |
| PyObject *right = POP(); |
| PyObject *left = TOP(); |
| PyObject *res = PyNumber_Rshift(left, right); |
| Py_DECREF(left); |
| Py_DECREF(right); |
| SET_TOP(res); |
| if (res == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(BINARY_AND) { |
| PyObject *right = POP(); |
| PyObject *left = TOP(); |
| PyObject *res = PyNumber_And(left, right); |
| Py_DECREF(left); |
| Py_DECREF(right); |
| SET_TOP(res); |
| if (res == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(BINARY_XOR) { |
| PyObject *right = POP(); |
| PyObject *left = TOP(); |
| PyObject *res = PyNumber_Xor(left, right); |
| Py_DECREF(left); |
| Py_DECREF(right); |
| SET_TOP(res); |
| if (res == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(BINARY_OR) { |
| PyObject *right = POP(); |
| PyObject *left = TOP(); |
| PyObject *res = PyNumber_Or(left, right); |
| Py_DECREF(left); |
| Py_DECREF(right); |
| SET_TOP(res); |
| if (res == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(LIST_APPEND) { |
| PyObject *v = POP(); |
| PyObject *list = PEEK(oparg); |
| int err; |
| err = PyList_Append(list, v); |
| Py_DECREF(v); |
| if (err != 0) |
| goto error; |
| PREDICT(JUMP_ABSOLUTE); |
| DISPATCH(); |
| } |
| |
| TARGET(SET_ADD) { |
| PyObject *v = POP(); |
| PyObject *set = PEEK(oparg); |
| int err; |
| err = PySet_Add(set, v); |
| Py_DECREF(v); |
| if (err != 0) |
| goto error; |
| PREDICT(JUMP_ABSOLUTE); |
| DISPATCH(); |
| } |
| |
| TARGET(INPLACE_POWER) { |
| PyObject *exp = POP(); |
| PyObject *base = TOP(); |
| PyObject *res = PyNumber_InPlacePower(base, exp, Py_None); |
| Py_DECREF(base); |
| Py_DECREF(exp); |
| SET_TOP(res); |
| if (res == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(INPLACE_MULTIPLY) { |
| PyObject *right = POP(); |
| PyObject *left = TOP(); |
| PyObject *res = PyNumber_InPlaceMultiply(left, right); |
| Py_DECREF(left); |
| Py_DECREF(right); |
| SET_TOP(res); |
| if (res == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(INPLACE_MATRIX_MULTIPLY) { |
| PyObject *right = POP(); |
| PyObject *left = TOP(); |
| PyObject *res = PyNumber_InPlaceMatrixMultiply(left, right); |
| Py_DECREF(left); |
| Py_DECREF(right); |
| SET_TOP(res); |
| if (res == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(INPLACE_TRUE_DIVIDE) { |
| PyObject *divisor = POP(); |
| PyObject *dividend = TOP(); |
| PyObject *quotient = PyNumber_InPlaceTrueDivide(dividend, divisor); |
| Py_DECREF(dividend); |
| Py_DECREF(divisor); |
| SET_TOP(quotient); |
| if (quotient == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(INPLACE_FLOOR_DIVIDE) { |
| PyObject *divisor = POP(); |
| PyObject *dividend = TOP(); |
| PyObject *quotient = PyNumber_InPlaceFloorDivide(dividend, divisor); |
| Py_DECREF(dividend); |
| Py_DECREF(divisor); |
| SET_TOP(quotient); |
| if (quotient == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(INPLACE_MODULO) { |
| PyObject *right = POP(); |
| PyObject *left = TOP(); |
| PyObject *mod = PyNumber_InPlaceRemainder(left, right); |
| Py_DECREF(left); |
| Py_DECREF(right); |
| SET_TOP(mod); |
| if (mod == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(INPLACE_ADD) { |
| PyObject *right = POP(); |
| PyObject *left = TOP(); |
| PyObject *sum; |
| if (PyUnicode_CheckExact(left) && PyUnicode_CheckExact(right)) { |
| sum = unicode_concatenate(left, right, f, next_instr); |
| /* unicode_concatenate consumed the ref to left */ |
| } |
| else { |
| sum = PyNumber_InPlaceAdd(left, right); |
| Py_DECREF(left); |
| } |
| Py_DECREF(right); |
| SET_TOP(sum); |
| if (sum == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(INPLACE_SUBTRACT) { |
| PyObject *right = POP(); |
| PyObject *left = TOP(); |
| PyObject *diff = PyNumber_InPlaceSubtract(left, right); |
| Py_DECREF(left); |
| Py_DECREF(right); |
| SET_TOP(diff); |
| if (diff == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(INPLACE_LSHIFT) { |
| PyObject *right = POP(); |
| PyObject *left = TOP(); |
| PyObject *res = PyNumber_InPlaceLshift(left, right); |
| Py_DECREF(left); |
| Py_DECREF(right); |
| SET_TOP(res); |
| if (res == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(INPLACE_RSHIFT) { |
| PyObject *right = POP(); |
| PyObject *left = TOP(); |
| PyObject *res = PyNumber_InPlaceRshift(left, right); |
| Py_DECREF(left); |
| Py_DECREF(right); |
| SET_TOP(res); |
| if (res == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(INPLACE_AND) { |
| PyObject *right = POP(); |
| PyObject *left = TOP(); |
| PyObject *res = PyNumber_InPlaceAnd(left, right); |
| Py_DECREF(left); |
| Py_DECREF(right); |
| SET_TOP(res); |
| if (res == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(INPLACE_XOR) { |
| PyObject *right = POP(); |
| PyObject *left = TOP(); |
| PyObject *res = PyNumber_InPlaceXor(left, right); |
| Py_DECREF(left); |
| Py_DECREF(right); |
| SET_TOP(res); |
| if (res == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(INPLACE_OR) { |
| PyObject *right = POP(); |
| PyObject *left = TOP(); |
| PyObject *res = PyNumber_InPlaceOr(left, right); |
| Py_DECREF(left); |
| Py_DECREF(right); |
| SET_TOP(res); |
| if (res == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(STORE_SUBSCR) { |
| PyObject *sub = TOP(); |
| PyObject *container = SECOND(); |
| PyObject *v = THIRD(); |
| int err; |
| STACKADJ(-3); |
| /* container[sub] = v */ |
| err = PyObject_SetItem(container, sub, v); |
| Py_DECREF(v); |
| Py_DECREF(container); |
| Py_DECREF(sub); |
| if (err != 0) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(STORE_ANNOTATION) { |
| _Py_IDENTIFIER(__annotations__); |
| PyObject *ann_dict; |
| PyObject *ann = POP(); |
| PyObject *name = GETITEM(names, oparg); |
| int err; |
| if (f->f_locals == NULL) { |
| PyErr_Format(PyExc_SystemError, |
| "no locals found when storing annotation"); |
| Py_DECREF(ann); |
| goto error; |
| } |
| /* first try to get __annotations__ from locals... */ |
| if (PyDict_CheckExact(f->f_locals)) { |
| ann_dict = _PyDict_GetItemId(f->f_locals, |
| &PyId___annotations__); |
| if (ann_dict == NULL) { |
| PyErr_SetString(PyExc_NameError, |
| "__annotations__ not found"); |
| Py_DECREF(ann); |
| goto error; |
| } |
| Py_INCREF(ann_dict); |
| } |
| else { |
| PyObject *ann_str = _PyUnicode_FromId(&PyId___annotations__); |
| if (ann_str == NULL) { |
| Py_DECREF(ann); |
| goto error; |
| } |
| ann_dict = PyObject_GetItem(f->f_locals, ann_str); |
| if (ann_dict == NULL) { |
| if (PyErr_ExceptionMatches(PyExc_KeyError)) { |
| PyErr_SetString(PyExc_NameError, |
| "__annotations__ not found"); |
| } |
| Py_DECREF(ann); |
| goto error; |
| } |
| } |
| /* ...if succeeded, __annotations__[name] = ann */ |
| if (PyDict_CheckExact(ann_dict)) { |
| err = PyDict_SetItem(ann_dict, name, ann); |
| } |
| else { |
| err = PyObject_SetItem(ann_dict, name, ann); |
| } |
| Py_DECREF(ann_dict); |
| Py_DECREF(ann); |
| if (err != 0) { |
| goto error; |
| } |
| DISPATCH(); |
| } |
| |
| TARGET(DELETE_SUBSCR) { |
| PyObject *sub = TOP(); |
| PyObject *container = SECOND(); |
| int err; |
| STACKADJ(-2); |
| /* del container[sub] */ |
| err = PyObject_DelItem(container, sub); |
| Py_DECREF(container); |
| Py_DECREF(sub); |
| if (err != 0) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(PRINT_EXPR) { |
| _Py_IDENTIFIER(displayhook); |
| PyObject *value = POP(); |
| PyObject *hook = _PySys_GetObjectId(&PyId_displayhook); |
| PyObject *res; |
| if (hook == NULL) { |
| PyErr_SetString(PyExc_RuntimeError, |
| "lost sys.displayhook"); |
| Py_DECREF(value); |
| goto error; |
| } |
| res = PyObject_CallFunctionObjArgs(hook, value, NULL); |
| Py_DECREF(value); |
| if (res == NULL) |
| goto error; |
| Py_DECREF(res); |
| DISPATCH(); |
| } |
| |
| TARGET(RAISE_VARARGS) { |
| PyObject *cause = NULL, *exc = NULL; |
| switch (oparg) { |
| case 2: |
| cause = POP(); /* cause */ |
| /* fall through */ |
| case 1: |
| exc = POP(); /* exc */ |
| /* fall through */ |
| case 0: |
| if (do_raise(exc, cause)) { |
| why = WHY_EXCEPTION; |
| goto fast_block_end; |
| } |
| break; |
| default: |
| PyErr_SetString(PyExc_SystemError, |
| "bad RAISE_VARARGS oparg"); |
| break; |
| } |
| goto error; |
| } |
| |
| TARGET(RETURN_VALUE) { |
| retval = POP(); |
| why = WHY_RETURN; |
| goto fast_block_end; |
| } |
| |
| TARGET(GET_AITER) { |
| unaryfunc getter = NULL; |
| PyObject *iter = NULL; |
| PyObject *obj = TOP(); |
| PyTypeObject *type = Py_TYPE(obj); |
| |
| if (type->tp_as_async != NULL) { |
| getter = type->tp_as_async->am_aiter; |
| } |
| |
| if (getter != NULL) { |
| iter = (*getter)(obj); |
| Py_DECREF(obj); |
| if (iter == NULL) { |
| SET_TOP(NULL); |
| goto error; |
| } |
| } |
| else { |
| SET_TOP(NULL); |
| PyErr_Format( |
| PyExc_TypeError, |
| "'async for' requires an object with " |
| "__aiter__ method, got %.100s", |
| type->tp_name); |
| Py_DECREF(obj); |
| goto error; |
| } |
| |
| if (Py_TYPE(iter)->tp_as_async == NULL || |
| Py_TYPE(iter)->tp_as_async->am_anext == NULL) { |
| |
| SET_TOP(NULL); |
| PyErr_Format( |
| PyExc_TypeError, |
| "'async for' received an object from __aiter__ " |
| "that does not implement __anext__: %.100s", |
| Py_TYPE(iter)->tp_name); |
| Py_DECREF(iter); |
| goto error; |
| } |
| |
| SET_TOP(iter); |
| DISPATCH(); |
| } |
| |
| TARGET(GET_ANEXT) { |
| unaryfunc getter = NULL; |
| PyObject *next_iter = NULL; |
| PyObject *awaitable = NULL; |
| PyObject *aiter = TOP(); |
| PyTypeObject *type = Py_TYPE(aiter); |
| |
| if (PyAsyncGen_CheckExact(aiter)) { |
| awaitable = type->tp_as_async->am_anext(aiter); |
| if (awaitable == NULL) { |
| goto error; |
| } |
| } else { |
| if (type->tp_as_async != NULL){ |
| getter = type->tp_as_async->am_anext; |
| } |
| |
| if (getter != NULL) { |
| next_iter = (*getter)(aiter); |
| if (next_iter == NULL) { |
| goto error; |
| } |
| } |
| else { |
| PyErr_Format( |
| PyExc_TypeError, |
| "'async for' requires an iterator with " |
| "__anext__ method, got %.100s", |
| type->tp_name); |
| goto error; |
| } |
| |
| awaitable = _PyCoro_GetAwaitableIter(next_iter); |
| if (awaitable == NULL) { |
| _PyErr_FormatFromCause( |
| PyExc_TypeError, |
| "'async for' received an invalid object " |
| "from __anext__: %.100s", |
| Py_TYPE(next_iter)->tp_name); |
| |
| Py_DECREF(next_iter); |
| goto error; |
| } else { |
| Py_DECREF(next_iter); |
| } |
| } |
| |
| PUSH(awaitable); |
| PREDICT(LOAD_CONST); |
| DISPATCH(); |
| } |
| |
| PREDICTED(GET_AWAITABLE); |
| TARGET(GET_AWAITABLE) { |
| PyObject *iterable = TOP(); |
| PyObject *iter = _PyCoro_GetAwaitableIter(iterable); |
| |
| Py_DECREF(iterable); |
| |
| if (iter != NULL && PyCoro_CheckExact(iter)) { |
| PyObject *yf = _PyGen_yf((PyGenObject*)iter); |
| if (yf != NULL) { |
| /* `iter` is a coroutine object that is being |
| awaited, `yf` is a pointer to the current awaitable |
| being awaited on. */ |
| Py_DECREF(yf); |
| Py_CLEAR(iter); |
| PyErr_SetString( |
| PyExc_RuntimeError, |
| "coroutine is being awaited already"); |
| /* The code below jumps to `error` if `iter` is NULL. */ |
| } |
| } |
| |
| SET_TOP(iter); /* Even if it's NULL */ |
| |
| if (iter == NULL) { |
| goto error; |
| } |
| |
| PREDICT(LOAD_CONST); |
| DISPATCH(); |
| } |
| |
| TARGET(YIELD_FROM) { |
| PyObject *v = POP(); |
| PyObject *receiver = TOP(); |
| int err; |
| if (PyGen_CheckExact(receiver) || PyCoro_CheckExact(receiver)) { |
| retval = _PyGen_Send((PyGenObject *)receiver, v); |
| } else { |
| _Py_IDENTIFIER(send); |
| if (v == Py_None) |
| retval = Py_TYPE(receiver)->tp_iternext(receiver); |
| else |
| retval = _PyObject_CallMethodIdObjArgs(receiver, &PyId_send, v, NULL); |
| } |
| Py_DECREF(v); |
| if (retval == NULL) { |
| PyObject *val; |
| if (tstate->c_tracefunc != NULL |
| && PyErr_ExceptionMatches(PyExc_StopIteration)) |
| call_exc_trace(tstate->c_tracefunc, tstate->c_traceobj, tstate, f); |
| err = _PyGen_FetchStopIterationValue(&val); |
| if (err < 0) |
| goto error; |
| Py_DECREF(receiver); |
| SET_TOP(val); |
| DISPATCH(); |
| } |
| /* receiver remains on stack, retval is value to be yielded */ |
| f->f_stacktop = stack_pointer; |
| why = WHY_YIELD; |
| /* and repeat... */ |
| assert(f->f_lasti >= (int)sizeof(_Py_CODEUNIT)); |
| f->f_lasti -= sizeof(_Py_CODEUNIT); |
| goto fast_yield; |
| } |
| |
| TARGET(YIELD_VALUE) { |
| retval = POP(); |
| |
| if (co->co_flags & CO_ASYNC_GENERATOR) { |
| PyObject *w = _PyAsyncGenValueWrapperNew(retval); |
| Py_DECREF(retval); |
| if (w == NULL) { |
| retval = NULL; |
| goto error; |
| } |
| retval = w; |
| } |
| |
| f->f_stacktop = stack_pointer; |
| why = WHY_YIELD; |
| goto fast_yield; |
| } |
| |
| TARGET(POP_EXCEPT) { |
| PyTryBlock *b = PyFrame_BlockPop(f); |
| if (b->b_type != EXCEPT_HANDLER) { |
| PyErr_SetString(PyExc_SystemError, |
| "popped block is not an except handler"); |
| goto error; |
| } |
| UNWIND_EXCEPT_HANDLER(b); |
| DISPATCH(); |
| } |
| |
| PREDICTED(POP_BLOCK); |
| TARGET(POP_BLOCK) { |
| PyTryBlock *b = PyFrame_BlockPop(f); |
| UNWIND_BLOCK(b); |
| DISPATCH(); |
| } |
| |
| PREDICTED(END_FINALLY); |
| TARGET(END_FINALLY) { |
| PyObject *status = POP(); |
| if (PyLong_Check(status)) { |
| why = (enum why_code) PyLong_AS_LONG(status); |
| assert(why != WHY_YIELD && why != WHY_EXCEPTION); |
| if (why == WHY_RETURN || |
| why == WHY_CONTINUE) |
| retval = POP(); |
| if (why == WHY_SILENCED) { |
| /* An exception was silenced by 'with', we must |
| manually unwind the EXCEPT_HANDLER block which was |
| created when the exception was caught, otherwise |
| the stack will be in an inconsistent state. */ |
| PyTryBlock *b = PyFrame_BlockPop(f); |
| assert(b->b_type == EXCEPT_HANDLER); |
| UNWIND_EXCEPT_HANDLER(b); |
| why = WHY_NOT; |
| Py_DECREF(status); |
| DISPATCH(); |
| } |
| Py_DECREF(status); |
| goto fast_block_end; |
| } |
| else if (PyExceptionClass_Check(status)) { |
| PyObject *exc = POP(); |
| PyObject *tb = POP(); |
| PyErr_Restore(status, exc, tb); |
| why = WHY_EXCEPTION; |
| goto fast_block_end; |
| } |
| else if (status != Py_None) { |
| PyErr_SetString(PyExc_SystemError, |
| "'finally' pops bad exception"); |
| Py_DECREF(status); |
| goto error; |
| } |
| Py_DECREF(status); |
| DISPATCH(); |
| } |
| |
| TARGET(LOAD_BUILD_CLASS) { |
| _Py_IDENTIFIER(__build_class__); |
| |
| PyObject *bc; |
| if (PyDict_CheckExact(f->f_builtins)) { |
| bc = _PyDict_GetItemId(f->f_builtins, &PyId___build_class__); |
| if (bc == NULL) { |
| PyErr_SetString(PyExc_NameError, |
| "__build_class__ not found"); |
| goto error; |
| } |
| Py_INCREF(bc); |
| } |
| else { |
| PyObject *build_class_str = _PyUnicode_FromId(&PyId___build_class__); |
| if (build_class_str == NULL) |
| goto error; |
| bc = PyObject_GetItem(f->f_builtins, build_class_str); |
| if (bc == NULL) { |
| if (PyErr_ExceptionMatches(PyExc_KeyError)) |
| PyErr_SetString(PyExc_NameError, |
| "__build_class__ not found"); |
| goto error; |
| } |
| } |
| PUSH(bc); |
| DISPATCH(); |
| } |
| |
| TARGET(STORE_NAME) { |
| PyObject *name = GETITEM(names, oparg); |
| PyObject *v = POP(); |
| PyObject *ns = f->f_locals; |
| int err; |
| if (ns == NULL) { |
| PyErr_Format(PyExc_SystemError, |
| "no locals found when storing %R", name); |
| Py_DECREF(v); |
| goto error; |
| } |
| if (PyDict_CheckExact(ns)) |
| err = PyDict_SetItem(ns, name, v); |
| else |
| err = PyObject_SetItem(ns, name, v); |
| Py_DECREF(v); |
| if (err != 0) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(DELETE_NAME) { |
| PyObject *name = GETITEM(names, oparg); |
| PyObject *ns = f->f_locals; |
| int err; |
| if (ns == NULL) { |
| PyErr_Format(PyExc_SystemError, |
| "no locals when deleting %R", name); |
| goto error; |
| } |
| err = PyObject_DelItem(ns, name); |
| if (err != 0) { |
| format_exc_check_arg(PyExc_NameError, |
| NAME_ERROR_MSG, |
| name); |
| goto error; |
| } |
| DISPATCH(); |
| } |
| |
| PREDICTED(UNPACK_SEQUENCE); |
| TARGET(UNPACK_SEQUENCE) { |
| PyObject *seq = POP(), *item, **items; |
| if (PyTuple_CheckExact(seq) && |
| PyTuple_GET_SIZE(seq) == oparg) { |
| items = ((PyTupleObject *)seq)->ob_item; |
| while (oparg--) { |
| item = items[oparg]; |
| Py_INCREF(item); |
| PUSH(item); |
| } |
| } else if (PyList_CheckExact(seq) && |
| PyList_GET_SIZE(seq) == oparg) { |
| items = ((PyListObject *)seq)->ob_item; |
| while (oparg--) { |
| item = items[oparg]; |
| Py_INCREF(item); |
| PUSH(item); |
| } |
| } else if (unpack_iterable(seq, oparg, -1, |
| stack_pointer + oparg)) { |
| STACKADJ(oparg); |
| } else { |
| /* unpack_iterable() raised an exception */ |
| Py_DECREF(seq); |
| goto error; |
| } |
| Py_DECREF(seq); |
| DISPATCH(); |
| } |
| |
| TARGET(UNPACK_EX) { |
| int totalargs = 1 + (oparg & 0xFF) + (oparg >> 8); |
| PyObject *seq = POP(); |
| |
| if (unpack_iterable(seq, oparg & 0xFF, oparg >> 8, |
| stack_pointer + totalargs)) { |
| stack_pointer += totalargs; |
| } else { |
| Py_DECREF(seq); |
| goto error; |
| } |
| Py_DECREF(seq); |
| DISPATCH(); |
| } |
| |
| TARGET(STORE_ATTR) { |
| PyObject *name = GETITEM(names, oparg); |
| PyObject *owner = TOP(); |
| PyObject *v = SECOND(); |
| int err; |
| STACKADJ(-2); |
| err = PyObject_SetAttr(owner, name, v); |
| Py_DECREF(v); |
| Py_DECREF(owner); |
| if (err != 0) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(DELETE_ATTR) { |
| PyObject *name = GETITEM(names, oparg); |
| PyObject *owner = POP(); |
| int err; |
| err = PyObject_SetAttr(owner, name, (PyObject *)NULL); |
| Py_DECREF(owner); |
| if (err != 0) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(STORE_GLOBAL) { |
| PyObject *name = GETITEM(names, oparg); |
| PyObject *v = POP(); |
| int err; |
| err = PyDict_SetItem(f->f_globals, name, v); |
| Py_DECREF(v); |
| if (err != 0) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(DELETE_GLOBAL) { |
| PyObject *name = GETITEM(names, oparg); |
| int err; |
| err = PyDict_DelItem(f->f_globals, name); |
| if (err != 0) { |
| format_exc_check_arg( |
| PyExc_NameError, NAME_ERROR_MSG, name); |
| goto error; |
| } |
| DISPATCH(); |
| } |
| |
| TARGET(LOAD_NAME) { |
| PyObject *name = GETITEM(names, oparg); |
| PyObject *locals = f->f_locals; |
| PyObject *v; |
| if (locals == NULL) { |
| PyErr_Format(PyExc_SystemError, |
| "no locals when loading %R", name); |
| goto error; |
| } |
| if (PyDict_CheckExact(locals)) { |
| v = PyDict_GetItem(locals, name); |
| Py_XINCREF(v); |
| } |
| else { |
| v = PyObject_GetItem(locals, name); |
| if (v == NULL) { |
| if (!PyErr_ExceptionMatches(PyExc_KeyError)) |
| goto error; |
| PyErr_Clear(); |
| } |
| } |
| if (v == NULL) { |
| v = PyDict_GetItem(f->f_globals, name); |
| Py_XINCREF(v); |
| if (v == NULL) { |
| if (PyDict_CheckExact(f->f_builtins)) { |
| v = PyDict_GetItem(f->f_builtins, name); |
| if (v == NULL) { |
| format_exc_check_arg( |
| PyExc_NameError, |
| NAME_ERROR_MSG, name); |
| goto error; |
| } |
| Py_INCREF(v); |
| } |
| else { |
| v = PyObject_GetItem(f->f_builtins, name); |
| if (v == NULL) { |
| if (PyErr_ExceptionMatches(PyExc_KeyError)) |
| format_exc_check_arg( |
| PyExc_NameError, |
| NAME_ERROR_MSG, name); |
| goto error; |
| } |
| } |
| } |
| } |
| PUSH(v); |
| DISPATCH(); |
| } |
| |
| TARGET(LOAD_GLOBAL) { |
| PyObject *name = GETITEM(names, oparg); |
| PyObject *v; |
| if (PyDict_CheckExact(f->f_globals) |
| && PyDict_CheckExact(f->f_builtins)) |
| { |
| v = _PyDict_LoadGlobal((PyDictObject *)f->f_globals, |
| (PyDictObject *)f->f_builtins, |
| name); |
| if (v == NULL) { |
| if (!_PyErr_OCCURRED()) { |
| /* _PyDict_LoadGlobal() returns NULL without raising |
| * an exception if the key doesn't exist */ |
| format_exc_check_arg(PyExc_NameError, |
| NAME_ERROR_MSG, name); |
| } |
| goto error; |
| } |
| Py_INCREF(v); |
| } |
| else { |
| /* Slow-path if globals or builtins is not a dict */ |
| |
| /* namespace 1: globals */ |
| v = PyObject_GetItem(f->f_globals, name); |
| if (v == NULL) { |
| if (!PyErr_ExceptionMatches(PyExc_KeyError)) |
| goto error; |
| PyErr_Clear(); |
| |
| /* namespace 2: builtins */ |
| v = PyObject_GetItem(f->f_builtins, name); |
| if (v == NULL) { |
| if (PyErr_ExceptionMatches(PyExc_KeyError)) |
| format_exc_check_arg( |
| PyExc_NameError, |
| NAME_ERROR_MSG, name); |
| goto error; |
| } |
| } |
| } |
| PUSH(v); |
| DISPATCH(); |
| } |
| |
| TARGET(DELETE_FAST) { |
| PyObject *v = GETLOCAL(oparg); |
| if (v != NULL) { |
| SETLOCAL(oparg, NULL); |
| DISPATCH(); |
| } |
| format_exc_check_arg( |
| PyExc_UnboundLocalError, |
| UNBOUNDLOCAL_ERROR_MSG, |
| PyTuple_GetItem(co->co_varnames, oparg) |
| ); |
| goto error; |
| } |
| |
| TARGET(DELETE_DEREF) { |
| PyObject *cell = freevars[oparg]; |
| PyObject *oldobj = PyCell_GET(cell); |
| if (oldobj != NULL) { |
| PyCell_SET(cell, NULL); |
| Py_DECREF(oldobj); |
| DISPATCH(); |
| } |
| format_exc_unbound(co, oparg); |
| goto error; |
| } |
| |
| TARGET(LOAD_CLOSURE) { |
| PyObject *cell = freevars[oparg]; |
| Py_INCREF(cell); |
| PUSH(cell); |
| DISPATCH(); |
| } |
| |
| TARGET(LOAD_CLASSDEREF) { |
| PyObject *name, *value, *locals = f->f_locals; |
| Py_ssize_t idx; |
| assert(locals); |
| assert(oparg >= PyTuple_GET_SIZE(co->co_cellvars)); |
| idx = oparg - PyTuple_GET_SIZE(co->co_cellvars); |
| assert(idx >= 0 && idx < PyTuple_GET_SIZE(co->co_freevars)); |
| name = PyTuple_GET_ITEM(co->co_freevars, idx); |
| if (PyDict_CheckExact(locals)) { |
| value = PyDict_GetItem(locals, name); |
| Py_XINCREF(value); |
| } |
| else { |
| value = PyObject_GetItem(locals, name); |
| if (value == NULL) { |
| if (!PyErr_ExceptionMatches(PyExc_KeyError)) |
| goto error; |
| PyErr_Clear(); |
| } |
| } |
| if (!value) { |
| PyObject *cell = freevars[oparg]; |
| value = PyCell_GET(cell); |
| if (value == NULL) { |
| format_exc_unbound(co, oparg); |
| goto error; |
| } |
| Py_INCREF(value); |
| } |
| PUSH(value); |
| DISPATCH(); |
| } |
| |
| TARGET(LOAD_DEREF) { |
| PyObject *cell = freevars[oparg]; |
| PyObject *value = PyCell_GET(cell); |
| if (value == NULL) { |
| format_exc_unbound(co, oparg); |
| goto error; |
| } |
| Py_INCREF(value); |
| PUSH(value); |
| DISPATCH(); |
| } |
| |
| TARGET(STORE_DEREF) { |
| PyObject *v = POP(); |
| PyObject *cell = freevars[oparg]; |
| PyObject *oldobj = PyCell_GET(cell); |
| PyCell_SET(cell, v); |
| Py_XDECREF(oldobj); |
| DISPATCH(); |
| } |
| |
| TARGET(BUILD_STRING) { |
| PyObject *str; |
| PyObject *empty = PyUnicode_New(0, 0); |
| if (empty == NULL) { |
| goto error; |
| } |
| str = _PyUnicode_JoinArray(empty, stack_pointer - oparg, oparg); |
| Py_DECREF(empty); |
| if (str == NULL) |
| goto error; |
| while (--oparg >= 0) { |
| PyObject *item = POP(); |
| Py_DECREF(item); |
| } |
| PUSH(str); |
| DISPATCH(); |
| } |
| |
| TARGET(BUILD_TUPLE) { |
| PyObject *tup = PyTuple_New(oparg); |
| if (tup == NULL) |
| goto error; |
| while (--oparg >= 0) { |
| PyObject *item = POP(); |
| PyTuple_SET_ITEM(tup, oparg, item); |
| } |
| PUSH(tup); |
| DISPATCH(); |
| } |
| |
| TARGET(BUILD_LIST) { |
| PyObject *list = PyList_New(oparg); |
| if (list == NULL) |
| goto error; |
| while (--oparg >= 0) { |
| PyObject *item = POP(); |
| PyList_SET_ITEM(list, oparg, item); |
| } |
| PUSH(list); |
| DISPATCH(); |
| } |
| |
| TARGET(BUILD_TUPLE_UNPACK_WITH_CALL) |
| TARGET(BUILD_TUPLE_UNPACK) |
| TARGET(BUILD_LIST_UNPACK) { |
| int convert_to_tuple = opcode != BUILD_LIST_UNPACK; |
| Py_ssize_t i; |
| PyObject *sum = PyList_New(0); |
| PyObject *return_value; |
| |
| if (sum == NULL) |
| goto error; |
| |
| for (i = oparg; i > 0; i--) { |
| PyObject *none_val; |
| |
| none_val = _PyList_Extend((PyListObject *)sum, PEEK(i)); |
| if (none_val == NULL) { |
| if (opcode == BUILD_TUPLE_UNPACK_WITH_CALL && |
| PyErr_ExceptionMatches(PyExc_TypeError)) |
| { |
| check_args_iterable(PEEK(1 + oparg), PEEK(i)); |
| } |
| Py_DECREF(sum); |
| goto error; |
| } |
| Py_DECREF(none_val); |
| } |
| |
| if (convert_to_tuple) { |
| return_value = PyList_AsTuple(sum); |
| Py_DECREF(sum); |
| if (return_value == NULL) |
| goto error; |
| } |
| else { |
| return_value = sum; |
| } |
| |
| while (oparg--) |
| Py_DECREF(POP()); |
| PUSH(return_value); |
| DISPATCH(); |
| } |
| |
| TARGET(BUILD_SET) { |
| PyObject *set = PySet_New(NULL); |
| int err = 0; |
| int i; |
| if (set == NULL) |
| goto error; |
| for (i = oparg; i > 0; i--) { |
| PyObject *item = PEEK(i); |
| if (err == 0) |
| err = PySet_Add(set, item); |
| Py_DECREF(item); |
| } |
| STACKADJ(-oparg); |
| if (err != 0) { |
| Py_DECREF(set); |
| goto error; |
| } |
| PUSH(set); |
| DISPATCH(); |
| } |
| |
| TARGET(BUILD_SET_UNPACK) { |
| Py_ssize_t i; |
| PyObject *sum = PySet_New(NULL); |
| if (sum == NULL) |
| goto error; |
| |
| for (i = oparg; i > 0; i--) { |
| if (_PySet_Update(sum, PEEK(i)) < 0) { |
| Py_DECREF(sum); |
| goto error; |
| } |
| } |
| |
| while (oparg--) |
| Py_DECREF(POP()); |
| PUSH(sum); |
| DISPATCH(); |
| } |
| |
| TARGET(BUILD_MAP) { |
| Py_ssize_t i; |
| PyObject *map = _PyDict_NewPresized((Py_ssize_t)oparg); |
| if (map == NULL) |
| goto error; |
| for (i = oparg; i > 0; i--) { |
| int err; |
| PyObject *key = PEEK(2*i); |
| PyObject *value = PEEK(2*i - 1); |
| err = PyDict_SetItem(map, key, value); |
| if (err != 0) { |
| Py_DECREF(map); |
| goto error; |
| } |
| } |
| |
| while (oparg--) { |
| Py_DECREF(POP()); |
| Py_DECREF(POP()); |
| } |
| PUSH(map); |
| DISPATCH(); |
| } |
| |
| TARGET(SETUP_ANNOTATIONS) { |
| _Py_IDENTIFIER(__annotations__); |
| int err; |
| PyObject *ann_dict; |
| if (f->f_locals == NULL) { |
| PyErr_Format(PyExc_SystemError, |
| "no locals found when setting up annotations"); |
| goto error; |
| } |
| /* check if __annotations__ in locals()... */ |
| if (PyDict_CheckExact(f->f_locals)) { |
| ann_dict = _PyDict_GetItemId(f->f_locals, |
| &PyId___annotations__); |
| if (ann_dict == NULL) { |
| /* ...if not, create a new one */ |
| ann_dict = PyDict_New(); |
| if (ann_dict == NULL) { |
| goto error; |
| } |
| err = _PyDict_SetItemId(f->f_locals, |
| &PyId___annotations__, ann_dict); |
| Py_DECREF(ann_dict); |
| if (err != 0) { |
| goto error; |
| } |
| } |
| } |
| else { |
| /* do the same if locals() is not a dict */ |
| PyObject *ann_str = _PyUnicode_FromId(&PyId___annotations__); |
| if (ann_str == NULL) { |
| goto error; |
| } |
| ann_dict = PyObject_GetItem(f->f_locals, ann_str); |
| if (ann_dict == NULL) { |
| if (!PyErr_ExceptionMatches(PyExc_KeyError)) { |
| goto error; |
| } |
| PyErr_Clear(); |
| ann_dict = PyDict_New(); |
| if (ann_dict == NULL) { |
| goto error; |
| } |
| err = PyObject_SetItem(f->f_locals, ann_str, ann_dict); |
| Py_DECREF(ann_dict); |
| if (err != 0) { |
| goto error; |
| } |
| } |
| else { |
| Py_DECREF(ann_dict); |
| } |
| } |
| DISPATCH(); |
| } |
| |
| TARGET(BUILD_CONST_KEY_MAP) { |
| Py_ssize_t i; |
| PyObject *map; |
| PyObject *keys = TOP(); |
| if (!PyTuple_CheckExact(keys) || |
| PyTuple_GET_SIZE(keys) != (Py_ssize_t)oparg) { |
| PyErr_SetString(PyExc_SystemError, |
| "bad BUILD_CONST_KEY_MAP keys argument"); |
| goto error; |
| } |
| map = _PyDict_NewPresized((Py_ssize_t)oparg); |
| if (map == NULL) { |
| goto error; |
| } |
| for (i = oparg; i > 0; i--) { |
| int err; |
| PyObject *key = PyTuple_GET_ITEM(keys, oparg - i); |
| PyObject *value = PEEK(i + 1); |
| err = PyDict_SetItem(map, key, value); |
| if (err != 0) { |
| Py_DECREF(map); |
| goto error; |
| } |
| } |
| |
| Py_DECREF(POP()); |
| while (oparg--) { |
| Py_DECREF(POP()); |
| } |
| PUSH(map); |
| DISPATCH(); |
| } |
| |
| TARGET(BUILD_MAP_UNPACK) { |
| Py_ssize_t i; |
| PyObject *sum = PyDict_New(); |
| if (sum == NULL) |
| goto error; |
| |
| for (i = oparg; i > 0; i--) { |
| PyObject *arg = PEEK(i); |
| if (PyDict_Update(sum, arg) < 0) { |
| if (PyErr_ExceptionMatches(PyExc_AttributeError)) { |
| PyErr_Format(PyExc_TypeError, |
| "'%.200s' object is not a mapping", |
| arg->ob_type->tp_name); |
| } |
| Py_DECREF(sum); |
| goto error; |
| } |
| } |
| |
| while (oparg--) |
| Py_DECREF(POP()); |
| PUSH(sum); |
| DISPATCH(); |
| } |
| |
| TARGET(BUILD_MAP_UNPACK_WITH_CALL) { |
| Py_ssize_t i; |
| PyObject *sum = PyDict_New(); |
| if (sum == NULL) |
| goto error; |
| |
| for (i = oparg; i > 0; i--) { |
| PyObject *arg = PEEK(i); |
| if (_PyDict_MergeEx(sum, arg, 2) < 0) { |
| PyObject *func = PEEK(2 + oparg); |
| if (PyErr_ExceptionMatches(PyExc_AttributeError)) { |
| format_kwargs_mapping_error(func, arg); |
| } |
| else if (PyErr_ExceptionMatches(PyExc_KeyError)) { |
| PyObject *exc, *val, *tb; |
| PyErr_Fetch(&exc, &val, &tb); |
| if (val && PyTuple_Check(val) && PyTuple_GET_SIZE(val) == 1) { |
| PyObject *key = PyTuple_GET_ITEM(val, 0); |
| if (!PyUnicode_Check(key)) { |
| PyErr_Format(PyExc_TypeError, |
| "%.200s%.200s keywords must be strings", |
| PyEval_GetFuncName(func), |
| PyEval_GetFuncDesc(func)); |
| } else { |
| PyErr_Format(PyExc_TypeError, |
| "%.200s%.200s got multiple " |
| "values for keyword argument '%U'", |
| PyEval_GetFuncName(func), |
| PyEval_GetFuncDesc(func), |
| key); |
| } |
| Py_XDECREF(exc); |
| Py_XDECREF(val); |
| Py_XDECREF(tb); |
| } |
| else { |
| PyErr_Restore(exc, val, tb); |
| } |
| } |
| Py_DECREF(sum); |
| goto error; |
| } |
| } |
| |
| while (oparg--) |
| Py_DECREF(POP()); |
| PUSH(sum); |
| DISPATCH(); |
| } |
| |
| TARGET(MAP_ADD) { |
| PyObject *key = TOP(); |
| PyObject *value = SECOND(); |
| PyObject *map; |
| int err; |
| STACKADJ(-2); |
| map = PEEK(oparg); /* dict */ |
| assert(PyDict_CheckExact(map)); |
| err = PyDict_SetItem(map, key, value); /* map[key] = value */ |
| Py_DECREF(value); |
| Py_DECREF(key); |
| if (err != 0) |
| goto error; |
| PREDICT(JUMP_ABSOLUTE); |
| DISPATCH(); |
| } |
| |
| TARGET(LOAD_ATTR) { |
| PyObject *name = GETITEM(names, oparg); |
| PyObject *owner = TOP(); |
| PyObject *res = PyObject_GetAttr(owner, name); |
| Py_DECREF(owner); |
| SET_TOP(res); |
| if (res == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(COMPARE_OP) { |
| PyObject *right = POP(); |
| PyObject *left = TOP(); |
| PyObject *res = cmp_outcome(oparg, left, right); |
| Py_DECREF(left); |
| Py_DECREF(right); |
| SET_TOP(res); |
| if (res == NULL) |
| goto error; |
| PREDICT(POP_JUMP_IF_FALSE); |
| PREDICT(POP_JUMP_IF_TRUE); |
| DISPATCH(); |
| } |
| |
| TARGET(IMPORT_NAME) { |
| PyObject *name = GETITEM(names, oparg); |
| PyObject *fromlist = POP(); |
| PyObject *level = TOP(); |
| PyObject *res; |
| res = import_name(f, name, fromlist, level); |
| Py_DECREF(level); |
| Py_DECREF(fromlist); |
| SET_TOP(res); |
| if (res == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(IMPORT_STAR) { |
| PyObject *from = POP(), *locals; |
| int err; |
| if (PyFrame_FastToLocalsWithError(f) < 0) { |
| Py_DECREF(from); |
| goto error; |
| } |
| |
| locals = f->f_locals; |
| if (locals == NULL) { |
| PyErr_SetString(PyExc_SystemError, |
| "no locals found during 'import *'"); |
| Py_DECREF(from); |
| goto error; |
| } |
| err = import_all_from(locals, from); |
| PyFrame_LocalsToFast(f, 0); |
| Py_DECREF(from); |
| if (err != 0) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(IMPORT_FROM) { |
| PyObject *name = GETITEM(names, oparg); |
| PyObject *from = TOP(); |
| PyObject *res; |
| res = import_from(from, name); |
| PUSH(res); |
| if (res == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(JUMP_FORWARD) { |
| JUMPBY(oparg); |
| FAST_DISPATCH(); |
| } |
| |
| PREDICTED(POP_JUMP_IF_FALSE); |
| TARGET(POP_JUMP_IF_FALSE) { |
| PyObject *cond = POP(); |
| int err; |
| if (cond == Py_True) { |
| Py_DECREF(cond); |
| FAST_DISPATCH(); |
| } |
| if (cond == Py_False) { |
| Py_DECREF(cond); |
| JUMPTO(oparg); |
| FAST_DISPATCH(); |
| } |
| err = PyObject_IsTrue(cond); |
| Py_DECREF(cond); |
| if (err > 0) |
| ; |
| else if (err == 0) |
| JUMPTO(oparg); |
| else |
| goto error; |
| DISPATCH(); |
| } |
| |
| PREDICTED(POP_JUMP_IF_TRUE); |
| TARGET(POP_JUMP_IF_TRUE) { |
| PyObject *cond = POP(); |
| int err; |
| if (cond == Py_False) { |
| Py_DECREF(cond); |
| FAST_DISPATCH(); |
| } |
| if (cond == Py_True) { |
| Py_DECREF(cond); |
| JUMPTO(oparg); |
| FAST_DISPATCH(); |
| } |
| err = PyObject_IsTrue(cond); |
| Py_DECREF(cond); |
| if (err > 0) { |
| JUMPTO(oparg); |
| } |
| else if (err == 0) |
| ; |
| else |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(JUMP_IF_FALSE_OR_POP) { |
| PyObject *cond = TOP(); |
| int err; |
| if (cond == Py_True) { |
| STACKADJ(-1); |
| Py_DECREF(cond); |
| FAST_DISPATCH(); |
| } |
| if (cond == Py_False) { |
| JUMPTO(oparg); |
| FAST_DISPATCH(); |
| } |
| err = PyObject_IsTrue(cond); |
| if (err > 0) { |
| STACKADJ(-1); |
| Py_DECREF(cond); |
| } |
| else if (err == 0) |
| JUMPTO(oparg); |
| else |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(JUMP_IF_TRUE_OR_POP) { |
| PyObject *cond = TOP(); |
| int err; |
| if (cond == Py_False) { |
| STACKADJ(-1); |
| Py_DECREF(cond); |
| FAST_DISPATCH(); |
| } |
| if (cond == Py_True) { |
| JUMPTO(oparg); |
| FAST_DISPATCH(); |
| } |
| err = PyObject_IsTrue(cond); |
| if (err > 0) { |
| JUMPTO(oparg); |
| } |
| else if (err == 0) { |
| STACKADJ(-1); |
| Py_DECREF(cond); |
| } |
| else |
| goto error; |
| DISPATCH(); |
| } |
| |
| PREDICTED(JUMP_ABSOLUTE); |
| TARGET(JUMP_ABSOLUTE) { |
| JUMPTO(oparg); |
| #if FAST_LOOPS |
| /* Enabling this path speeds-up all while and for-loops by bypassing |
| the per-loop checks for signals. By default, this should be turned-off |
| because it prevents detection of a control-break in tight loops like |
| "while 1: pass". Compile with this option turned-on when you need |
| the speed-up and do not need break checking inside tight loops (ones |
| that contain only instructions ending with FAST_DISPATCH). |
| */ |
| FAST_DISPATCH(); |
| #else |
| DISPATCH(); |
| #endif |
| } |
| |
| TARGET(GET_ITER) { |
| /* before: [obj]; after [getiter(obj)] */ |
| PyObject *iterable = TOP(); |
| PyObject *iter = PyObject_GetIter(iterable); |
| Py_DECREF(iterable); |
| SET_TOP(iter); |
| if (iter == NULL) |
| goto error; |
| PREDICT(FOR_ITER); |
| PREDICT(CALL_FUNCTION); |
| DISPATCH(); |
| } |
| |
| TARGET(GET_YIELD_FROM_ITER) { |
| /* before: [obj]; after [getiter(obj)] */ |
| PyObject *iterable = TOP(); |
| PyObject *iter; |
| if (PyCoro_CheckExact(iterable)) { |
| /* `iterable` is a coroutine */ |
| if (!(co->co_flags & (CO_COROUTINE | CO_ITERABLE_COROUTINE))) { |
| /* and it is used in a 'yield from' expression of a |
| regular generator. */ |
| Py_DECREF(iterable); |
| SET_TOP(NULL); |
| PyErr_SetString(PyExc_TypeError, |
| "cannot 'yield from' a coroutine object " |
| "in a non-coroutine generator"); |
| goto error; |
| } |
| } |
| else if (!PyGen_CheckExact(iterable)) { |
| /* `iterable` is not a generator. */ |
| iter = PyObject_GetIter(iterable); |
| Py_DECREF(iterable); |
| SET_TOP(iter); |
| if (iter == NULL) |
| goto error; |
| } |
| PREDICT(LOAD_CONST); |
| DISPATCH(); |
| } |
| |
| PREDICTED(FOR_ITER); |
| TARGET(FOR_ITER) { |
| /* before: [iter]; after: [iter, iter()] *or* [] */ |
| PyObject *iter = TOP(); |
| PyObject *next = (*iter->ob_type->tp_iternext)(iter); |
| if (next != NULL) { |
| PUSH(next); |
| PREDICT(STORE_FAST); |
| PREDICT(UNPACK_SEQUENCE); |
| DISPATCH(); |
| } |
| if (PyErr_Occurred()) { |
| if (!PyErr_ExceptionMatches(PyExc_StopIteration)) |
| goto error; |
| else if (tstate->c_tracefunc != NULL) |
| call_exc_trace(tstate->c_tracefunc, tstate->c_traceobj, tstate, f); |
| PyErr_Clear(); |
| } |
| /* iterator ended normally */ |
| STACKADJ(-1); |
| Py_DECREF(iter); |
| JUMPBY(oparg); |
| PREDICT(POP_BLOCK); |
| DISPATCH(); |
| } |
| |
| TARGET(BREAK_LOOP) { |
| why = WHY_BREAK; |
| goto fast_block_end; |
| } |
| |
| TARGET(CONTINUE_LOOP) { |
| retval = PyLong_FromLong(oparg); |
| if (retval == NULL) |
| goto error; |
| why = WHY_CONTINUE; |
| goto fast_block_end; |
| } |
| |
| TARGET(SETUP_LOOP) |
| TARGET(SETUP_EXCEPT) |
| TARGET(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. |
| */ |
| |
| PyFrame_BlockSetup(f, opcode, INSTR_OFFSET() + oparg, |
| STACK_LEVEL()); |
| DISPATCH(); |
| } |
| |
| TARGET(BEFORE_ASYNC_WITH) { |
| _Py_IDENTIFIER(__aexit__); |
| _Py_IDENTIFIER(__aenter__); |
| |
| PyObject *mgr = TOP(); |
| PyObject *exit = special_lookup(mgr, &PyId___aexit__), |
| *enter; |
| PyObject *res; |
| if (exit == NULL) |
| goto error; |
| SET_TOP(exit); |
| enter = special_lookup(mgr, &PyId___aenter__); |
| Py_DECREF(mgr); |
| if (enter == NULL) |
| goto error; |
| res = _PyObject_CallNoArg(enter); |
| Py_DECREF(enter); |
| if (res == NULL) |
| goto error; |
| PUSH(res); |
| PREDICT(GET_AWAITABLE); |
| DISPATCH(); |
| } |
| |
| TARGET(SETUP_ASYNC_WITH) { |
| PyObject *res = POP(); |
| /* Setup the finally block before pushing the result |
| of __aenter__ on the stack. */ |
| PyFrame_BlockSetup(f, SETUP_FINALLY, INSTR_OFFSET() + oparg, |
| STACK_LEVEL()); |
| PUSH(res); |
| DISPATCH(); |
| } |
| |
| TARGET(SETUP_WITH) { |
| _Py_IDENTIFIER(__exit__); |
| _Py_IDENTIFIER(__enter__); |
| PyObject *mgr = TOP(); |
| PyObject *enter = special_lookup(mgr, &PyId___enter__), *exit; |
| PyObject *res; |
| if (enter == NULL) |
| goto error; |
| exit = special_lookup(mgr, &PyId___exit__); |
| if (exit == NULL) { |
| Py_DECREF(enter); |
| goto error; |
| } |
| SET_TOP(exit); |
| Py_DECREF(mgr); |
| res = _PyObject_CallNoArg(enter); |
| Py_DECREF(enter); |
| if (res == NULL) |
| goto error; |
| /* Setup the finally block before pushing the result |
| of __enter__ on the stack. */ |
| PyFrame_BlockSetup(f, SETUP_FINALLY, INSTR_OFFSET() + oparg, |
| STACK_LEVEL()); |
| |
| PUSH(res); |
| DISPATCH(); |
| } |
| |
| TARGET(WITH_CLEANUP_START) { |
| /* At the top of the stack are 1-6 values indicating |
| how/why we entered the finally clause: |
| - TOP = None |
| - (TOP, SECOND) = (WHY_{RETURN,CONTINUE}), retval |
| - TOP = WHY_*; no retval below it |
| - (TOP, SECOND, THIRD) = exc_info() |
| (FOURTH, FITH, SIXTH) = previous exception for EXCEPT_HANDLER |
| Below them is EXIT, the context.__exit__ bound method. |
| In the last case, we must call |
| EXIT(TOP, SECOND, THIRD) |
| otherwise we must call |
| EXIT(None, None, None) |
| |
| In the first three cases, we remove EXIT from the |
| stack, leaving the rest in the same order. In the |
| fourth case, we shift the bottom 3 values of the |
| stack down, and replace the empty spot with NULL. |
| |
| In addition, if the stack represents an exception, |
| *and* the function call returns a 'true' value, we |
| push WHY_SILENCED onto the stack. END_FINALLY will |
| then not re-raise the exception. (But non-local |
| gotos should still be resumed.) |
| */ |
| |
| PyObject* stack[3]; |
| PyObject *exit_func; |
| PyObject *exc, *val, *tb, *res; |
| |
| val = tb = Py_None; |
| exc = TOP(); |
| if (exc == Py_None) { |
| (void)POP(); |
| exit_func = TOP(); |
| SET_TOP(exc); |
| } |
| else if (PyLong_Check(exc)) { |
| STACKADJ(-1); |
| switch (PyLong_AsLong(exc)) { |
| case WHY_RETURN: |
| case WHY_CONTINUE: |
| /* Retval in TOP. */ |
| exit_func = SECOND(); |
| SET_SECOND(TOP()); |
| SET_TOP(exc); |
| break; |
| default: |
| exit_func = TOP(); |
| SET_TOP(exc); |
| break; |
| } |
| exc = Py_None; |
| } |
| else { |
| PyObject *tp2, *exc2, *tb2; |
| PyTryBlock *block; |
| val = SECOND(); |
| tb = THIRD(); |
| tp2 = FOURTH(); |
| exc2 = PEEK(5); |
| tb2 = PEEK(6); |
| exit_func = PEEK(7); |
| SET_VALUE(7, tb2); |
| SET_VALUE(6, exc2); |
| SET_VALUE(5, tp2); |
| /* UNWIND_EXCEPT_HANDLER will pop this off. */ |
| SET_FOURTH(NULL); |
| /* We just shifted the stack down, so we have |
| to tell the except handler block that the |
| values are lower than it expects. */ |
| block = &f->f_blockstack[f->f_iblock - 1]; |
| assert(block->b_type == EXCEPT_HANDLER); |
| block->b_level--; |
| } |
| |
| stack[0] = exc; |
| stack[1] = val; |
| stack[2] = tb; |
| res = _PyObject_FastCall(exit_func, stack, 3); |
| Py_DECREF(exit_func); |
| if (res == NULL) |
| goto error; |
| |
| Py_INCREF(exc); /* Duplicating the exception on the stack */ |
| PUSH(exc); |
| PUSH(res); |
| PREDICT(WITH_CLEANUP_FINISH); |
| DISPATCH(); |
| } |
| |
| PREDICTED(WITH_CLEANUP_FINISH); |
| TARGET(WITH_CLEANUP_FINISH) { |
| PyObject *res = POP(); |
| PyObject *exc = POP(); |
| int err; |
| |
| if (exc != Py_None) |
| err = PyObject_IsTrue(res); |
| else |
| err = 0; |
| |
| Py_DECREF(res); |
| Py_DECREF(exc); |
| |
| if (err < 0) |
| goto error; |
| else if (err > 0) { |
| /* There was an exception and a True return */ |
| PUSH(PyLong_FromLong((long) WHY_SILENCED)); |
| } |
| PREDICT(END_FINALLY); |
| DISPATCH(); |
| } |
| |
| TARGET(LOAD_METHOD) { |
| /* Designed to work in tamdem with CALL_METHOD. */ |
| PyObject *name = GETITEM(names, oparg); |
| PyObject *obj = TOP(); |
| PyObject *meth = NULL; |
| |
| int meth_found = _PyObject_GetMethod(obj, name, &meth); |
| |
| if (meth == NULL) { |
| /* Most likely attribute wasn't found. */ |
| goto error; |
| } |
| |
| if (meth_found) { |
| /* We can bypass temporary bound method object. |
| meth is unbound method and obj is self. |
| |
| meth | self | arg1 | ... | argN |
| */ |
| SET_TOP(meth); |
| PUSH(obj); // self |
| } |
| else { |
| /* meth is not an unbound method (but a regular attr, or |
| something was returned by a descriptor protocol). Set |
| the second element of the stack to NULL, to signal |
| CALL_METHOD that it's not a method call. |
| |
| NULL | meth | arg1 | ... | argN |
| */ |
| SET_TOP(NULL); |
| Py_DECREF(obj); |
| PUSH(meth); |
| } |
| DISPATCH(); |
| } |
| |
| TARGET(CALL_METHOD) { |
| /* Designed to work in tamdem with LOAD_METHOD. */ |
| PyObject **sp, *res, *meth; |
| |
| sp = stack_pointer; |
| |
| meth = PEEK(oparg + 2); |
| if (meth == NULL) { |
| /* `meth` is NULL when LOAD_METHOD thinks that it's not |
| a method call. |
| |
| Stack layout: |
| |
| ... | NULL | callable | arg1 | ... | argN |
| ^- TOP() |
| ^- (-oparg) |
| ^- (-oparg-1) |
| ^- (-oparg-2) |
| |
| `callable` will be POPed by call_function. |
| NULL will will be POPed manually later. |
| */ |
| res = call_function(&sp, oparg, NULL); |
| stack_pointer = sp; |
| (void)POP(); /* POP the NULL. */ |
| } |
| else { |
| /* This is a method call. Stack layout: |
| |
| ... | method | self | arg1 | ... | argN |
| ^- TOP() |
| ^- (-oparg) |
| ^- (-oparg-1) |
| ^- (-oparg-2) |
| |
| `self` and `method` will be POPed by call_function. |
| We'll be passing `oparg + 1` to call_function, to |
| make it accept the `self` as a first argument. |
| */ |
| res = call_function(&sp, oparg + 1, NULL); |
| stack_pointer = sp; |
| } |
| |
| PUSH(res); |
| if (res == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| PREDICTED(CALL_FUNCTION); |
| TARGET(CALL_FUNCTION) { |
| PyObject **sp, *res; |
| sp = stack_pointer; |
| res = call_function(&sp, oparg, NULL); |
| stack_pointer = sp; |
| PUSH(res); |
| if (res == NULL) { |
| goto error; |
| } |
| DISPATCH(); |
| } |
| |
| TARGET(CALL_FUNCTION_KW) { |
| PyObject **sp, *res, *names; |
| |
| names = POP(); |
| assert(PyTuple_CheckExact(names) && PyTuple_GET_SIZE(names) <= oparg); |
| sp = stack_pointer; |
| res = call_function(&sp, oparg, names); |
| stack_pointer = sp; |
| PUSH(res); |
| Py_DECREF(names); |
| |
| if (res == NULL) { |
| goto error; |
| } |
| DISPATCH(); |
| } |
| |
| TARGET(CALL_FUNCTION_EX) { |
| PyObject *func, *callargs, *kwargs = NULL, *result; |
| if (oparg & 0x01) { |
| kwargs = POP(); |
| if (!PyDict_CheckExact(kwargs)) { |
| PyObject *d = PyDict_New(); |
| if (d == NULL) |
| goto error; |
| if (PyDict_Update(d, kwargs) != 0) { |
| Py_DECREF(d); |
| /* PyDict_Update raises attribute |
| * error (percolated from an attempt |
| * to get 'keys' attribute) instead of |
| * a type error if its second argument |
| * is not a mapping. |
| */ |
| if (PyErr_ExceptionMatches(PyExc_AttributeError)) { |
| format_kwargs_mapping_error(SECOND(), kwargs); |
| } |
| Py_DECREF(kwargs); |
| goto error; |
| } |
| Py_DECREF(kwargs); |
| kwargs = d; |
| } |
| assert(PyDict_CheckExact(kwargs)); |
| } |
| callargs = POP(); |
| func = TOP(); |
| if (!PyTuple_CheckExact(callargs)) { |
| if (check_args_iterable(func, callargs) < 0) { |
| Py_DECREF(callargs); |
| goto error; |
| } |
| Py_SETREF(callargs, PySequence_Tuple(callargs)); |
| if (callargs == NULL) { |
| goto error; |
| } |
| } |
| assert(PyTuple_CheckExact(callargs)); |
| |
| result = do_call_core(func, callargs, kwargs); |
| Py_DECREF(func); |
| Py_DECREF(callargs); |
| Py_XDECREF(kwargs); |
| |
| SET_TOP(result); |
| if (result == NULL) { |
| goto error; |
| } |
| DISPATCH(); |
| } |
| |
| TARGET(MAKE_FUNCTION) { |
| PyObject *qualname = POP(); |
| PyObject *codeobj = POP(); |
| PyFunctionObject *func = (PyFunctionObject *) |
| PyFunction_NewWithQualName(codeobj, f->f_globals, qualname); |
| |
| Py_DECREF(codeobj); |
| Py_DECREF(qualname); |
| if (func == NULL) { |
| goto error; |
| } |
| |
| if (oparg & 0x08) { |
| assert(PyTuple_CheckExact(TOP())); |
| func ->func_closure = POP(); |
| } |
| if (oparg & 0x04) { |
| assert(PyDict_CheckExact(TOP())); |
| func->func_annotations = POP(); |
| } |
| if (oparg & 0x02) { |
| assert(PyDict_CheckExact(TOP())); |
| func->func_kwdefaults = POP(); |
| } |
| if (oparg & 0x01) { |
| assert(PyTuple_CheckExact(TOP())); |
| func->func_defaults = POP(); |
| } |
| |
| PUSH((PyObject *)func); |
| DISPATCH(); |
| } |
| |
| TARGET(BUILD_SLICE) { |
| PyObject *start, *stop, *step, *slice; |
| if (oparg == 3) |
| step = POP(); |
| else |
| step = NULL; |
| stop = POP(); |
| start = TOP(); |
| slice = PySlice_New(start, stop, step); |
| Py_DECREF(start); |
| Py_DECREF(stop); |
| Py_XDECREF(step); |
| SET_TOP(slice); |
| if (slice == NULL) |
| goto error; |
| DISPATCH(); |
| } |
| |
| TARGET(FORMAT_VALUE) { |
| /* Handles f-string value formatting. */ |
| PyObject *result; |
| PyObject *fmt_spec; |
| PyObject *value; |
| PyObject *(*conv_fn)(PyObject *); |
| int which_conversion = oparg & FVC_MASK; |
| int have_fmt_spec = (oparg & FVS_MASK) == FVS_HAVE_SPEC; |
| |
| fmt_spec = have_fmt_spec ? POP() : NULL; |
| value = POP(); |
| |
| /* See if any conversion is specified. */ |
| switch (which_conversion) { |
| case FVC_STR: conv_fn = PyObject_Str; break; |
| case FVC_REPR: conv_fn = PyObject_Repr; break; |
| case FVC_ASCII: conv_fn = PyObject_ASCII; break; |
| |
| /* Must be 0 (meaning no conversion), since only four |
| values are allowed by (oparg & FVC_MASK). */ |
| default: conv_fn = NULL; break; |
| } |
| |
| /* If there's a conversion function, call it and replace |
| value with that result. Otherwise, just use value, |
| without conversion. */ |
| if (conv_fn != NULL) { |
| result = conv_fn(value); |
| Py_DECREF(value); |
| if (result == NULL) { |
| Py_XDECREF(fmt_spec); |
| goto error; |
| } |
| value = result; |
| } |
| |
| /* If value is a unicode object, and there's no fmt_spec, |
| then we know the result of format(value) is value |
| itself. In that case, skip calling format(). I plan to |
| move this optimization in to PyObject_Format() |
| itself. */ |
| if (PyUnicode_CheckExact(value) && fmt_spec == NULL) { |
| /* Do nothing, just transfer ownership to result. */ |
| result = value; |
| } else { |
| /* Actually call format(). */ |
| result = PyObject_Format(value, fmt_spec); |
| Py_DECREF(value); |
| Py_XDECREF(fmt_spec); |
| if (result == NULL) { |
| goto error; |
| } |
| } |
| |
| PUSH(result); |
| DISPATCH(); |
| } |
| |
| TARGET(EXTENDED_ARG) { |
| int oldoparg = oparg; |
| NEXTOPARG(); |
| oparg |= oldoparg << 8; |
| goto dispatch_opcode; |
| } |
| |
| |
| #if USE_COMPUTED_GOTOS |
| _unknown_opcode: |
| #endif |
| default: |
| fprintf(stderr, |
| "XXX lineno: %d, opcode: %d\n", |
| PyFrame_GetLineNumber(f), |
| opcode); |
| PyErr_SetString(PyExc_SystemError, "unknown opcode"); |
| goto error; |
| |
| } /* switch */ |
| |
| /* This should never be reached. Every opcode should end with DISPATCH() |
| or goto error. */ |
| Py_UNREACHABLE(); |
| |
| error: |
| |
| assert(why == WHY_NOT); |
| why = WHY_EXCEPTION; |
| |
| /* Double-check exception status. */ |
| #ifdef NDEBUG |
| if (!PyErr_Occurred()) |
| PyErr_SetString(PyExc_SystemError, |
| "error return without exception set"); |
| #else |
| assert(PyErr_Occurred()); |
| #endif |
| |
| /* Log traceback info. */ |
| PyTraceBack_Here(f); |
| |
| if (tstate->c_tracefunc != NULL) |
| call_exc_trace(tstate->c_tracefunc, tstate->c_traceobj, |
| tstate, f); |
| |
| fast_block_end: |
| assert(why != WHY_NOT); |
| |
| /* Unwind stacks if a (pseudo) exception occurred */ |
| while (why != WHY_NOT && f->f_iblock > 0) { |
| /* Peek at the current block. */ |
| PyTryBlock *b = &f->f_blockstack[f->f_iblock - 1]; |
| |
| assert(why != WHY_YIELD); |
| if (b->b_type == SETUP_LOOP && why == WHY_CONTINUE) { |
| why = WHY_NOT; |
| JUMPTO(PyLong_AS_LONG(retval)); |
| Py_DECREF(retval); |
| break; |
| } |
| /* Now we have to pop the block. */ |
| f->f_iblock--; |
| |
| if (b->b_type == EXCEPT_HANDLER) { |
| UNWIND_EXCEPT_HANDLER(b); |
| continue; |
| } |
| UNWIND_BLOCK(b); |
| if (b->b_type == SETUP_LOOP && why == WHY_BREAK) { |
| why = WHY_NOT; |
| JUMPTO(b->b_handler); |
| break; |
| } |
| if (why == WHY_EXCEPTION && (b->b_type == SETUP_EXCEPT |
| || b->b_type == SETUP_FINALLY)) { |
| PyObject *exc, *val, *tb; |
| int handler = b->b_handler; |
| _PyErr_StackItem *exc_info = tstate->exc_info; |
| /* Beware, this invalidates all b->b_* fields */ |
| PyFrame_BlockSetup(f, EXCEPT_HANDLER, -1, STACK_LEVEL()); |
| PUSH(exc_info->exc_traceback); |
| PUSH(exc_info->exc_value); |
| if (exc_info->exc_type != NULL) { |
| PUSH(exc_info->exc_type); |
| } |
| else { |
| Py_INCREF(Py_None); |
| PUSH(Py_None); |
| } |
| PyErr_Fetch(&exc, &val, &tb); |
| /* Make the raw exception data |
| available to the handler, |
| so a program can emulate the |
| Python main loop. */ |
| PyErr_NormalizeException( |
| &exc, &val, &tb); |
| if (tb != NULL) |
| PyException_SetTraceback(val, tb); |
| else |
| PyException_SetTraceback(val, Py_None); |
| Py_INCREF(exc); |
| exc_info->exc_type = exc; |
| Py_INCREF(val); |
| exc_info->exc_value = val; |
| exc_info->exc_traceback = tb; |
| if (tb == NULL) |
| tb = Py_None; |
| Py_INCREF(tb); |
| PUSH(tb); |
| PUSH(val); |
| PUSH(exc); |
| why = WHY_NOT; |
| JUMPTO(handler); |
| break; |
| } |
| if (b->b_type == SETUP_FINALLY) { |
| if (why & (WHY_RETURN | WHY_CONTINUE)) |
| PUSH(retval); |
| PUSH(PyLong_FromLong((long)why)); |
| 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; |
| |
| assert(!PyErr_Occurred()); |
| |
| } /* main loop */ |
| |
| assert(why != WHY_YIELD); |
| /* Pop remaining stack entries. */ |
| while (!EMPTY()) { |
| PyObject *o = POP(); |
| Py_XDECREF(o); |
| } |
| |
| if (why != WHY_RETURN) |
| retval = NULL; |
| |
| assert((retval != NULL) ^ (PyErr_Occurred() != NULL)); |
| |
| fast_yield: |
| |
| if (tstate->use_tracing) { |
| if (tstate->c_tracefunc) { |
| if (why == WHY_RETURN || why == WHY_YIELD) { |
| if (call_trace(tstate->c_tracefunc, tstate->c_traceobj, |
| tstate, f, |
| PyTrace_RETURN, retval)) { |
| Py_CLEAR(retval); |
| why = WHY_EXCEPTION; |
| } |
| } |
| else if (why == WHY_EXCEPTION) { |
| call_trace_protected(tstate->c_tracefunc, tstate->c_traceobj, |
| tstate, f, |
| PyTrace_RETURN, NULL); |
| } |
| } |
| if (tstate->c_profilefunc) { |
| if (why == WHY_EXCEPTION) |
| call_trace_protected(tstate->c_profilefunc, |
| tstate->c_profileobj, |
| tstate, f, |
| PyTrace_RETURN, NULL); |
| else if (call_trace(tstate->c_profilefunc, tstate->c_profileobj, |
| tstate, f, |
| PyTrace_RETURN, retval)) { |
| Py_CLEAR(retval); |
| /* why = WHY_EXCEPTION; */ |
| } |
| } |
| } |
| |
| /* pop frame */ |
| exit_eval_frame: |
| if (PyDTrace_FUNCTION_RETURN_ENABLED()) |
| dtrace_function_return(f); |
| Py_LeaveRecursiveCall(); |
| f->f_executing = 0; |
| tstate->frame = f->f_back; |
| |
| return _Py_CheckFunctionResult(NULL, retval, "PyEval_EvalFrameEx"); |
| } |
| |
| static void |
| format_missing(const char *kind, PyCodeObject *co, PyObject *names) |
| { |
| int err; |
| Py_ssize_t len = PyList_GET_SIZE(names); |
| PyObject *name_str, *comma, *tail, *tmp; |
| |
| assert(PyList_CheckExact(names)); |
| assert(len >= 1); |
| /* Deal with the joys of natural language. */ |
| switch (len) { |
| case 1: |
| name_str = PyList_GET_ITEM(names, 0); |
| Py_INCREF(name_str); |
| break; |
| case 2: |
| name_str = PyUnicode_FromFormat("%U and %U", |
| PyList_GET_ITEM(names, len - 2), |
| PyList_GET_ITEM(names, len - 1)); |
| break; |
| default: |
| tail = PyUnicode_FromFormat(", %U, and %U", |
| PyList_GET_ITEM(names, len - 2), |
| PyList_GET_ITEM(names, len - 1)); |
| if (tail == NULL) |
| return; |
| /* Chop off the last two objects in the list. This shouldn't actually |
| fail, but we can't be too careful. */ |
| err = PyList_SetSlice(names, len - 2, len, NULL); |
| if (err == -1) { |
| Py_DECREF(tail); |
| return; |
| } |
| /* Stitch everything up into a nice comma-separated list. */ |
| comma = PyUnicode_FromString(", "); |
| if (comma == NULL) { |
| Py_DECREF(tail); |
| return; |
| } |
| tmp = PyUnicode_Join(comma, names); |
| Py_DECREF(comma); |
| if (tmp == NULL) { |
| Py_DECREF(tail); |
| return; |
| } |
| name_str = PyUnicode_Concat(tmp, tail); |
| Py_DECREF(tmp); |
| Py_DECREF(tail); |
| break; |
| } |
| if (name_str == NULL) |
| return; |
| PyErr_Format(PyExc_TypeError, |
| "%U() missing %i required %s argument%s: %U", |
| co->co_name, |
| len, |
| kind, |
| len == 1 ? "" : "s", |
| name_str); |
| Py_DECREF(name_str); |
| } |
| |
| static void |
| missing_arguments(PyCodeObject *co, Py_ssize_t missing, Py_ssize_t defcount, |
| PyObject **fastlocals) |
| { |
| Py_ssize_t i, j = 0; |
| Py_ssize_t start, end; |
| int positional = (defcount != -1); |
| const char *kind = positional ? "positional" : "keyword-only"; |
| PyObject *missing_names; |
| |
| /* Compute the names of the arguments that are missing. */ |
| missing_names = PyList_New(missing); |
| if (missing_names == NULL) |
| return; |
| if (positional) { |
| start = 0; |
| end = co->co_argcount - defcount; |
| } |
| else { |
| start = co->co_argcount; |
| end = start + co->co_kwonlyargcount; |
| } |
| for (i = start; i < end; i++) { |
| if (GETLOCAL(i) == NULL) { |
| PyObject *raw = PyTuple_GET_ITEM(co->co_varnames, i); |
| PyObject *name = PyObject_Repr(raw); |
| if (name == NULL) { |
| Py_DECREF(missing_names); |
| return; |
| } |
| PyList_SET_ITEM(missing_names, j++, name); |
| } |
| } |
| assert(j == missing); |
| format_missing(kind, co, missing_names); |
| Py_DECREF(missing_names); |
| } |
| |
| static void |
| too_many_positional(PyCodeObject *co, Py_ssize_t given, Py_ssize_t defcount, |
| PyObject **fastlocals) |
| { |
| int plural; |
| Py_ssize_t kwonly_given = 0; |
| Py_ssize_t i; |
| PyObject *sig, *kwonly_sig; |
| Py_ssize_t co_argcount = co->co_argcount; |
| |
| assert((co->co_flags & CO_VARARGS) == 0); |
| /* Count missing keyword-only args. */ |
| for (i = co_argcount; i < co_argcount + co->co_kwonlyargcount; i++) { |
| if (GETLOCAL(i) != NULL) { |
| kwonly_given++; |
| } |
| } |
| if (defcount) { |
| Py_ssize_t atleast = co_argcount - defcount; |
| plural = 1; |
| sig = PyUnicode_FromFormat("from %zd to %zd", atleast, co_argcount); |
| } |
| else { |
| plural = (co_argcount != 1); |
| sig = PyUnicode_FromFormat("%zd", co_argcount); |
| } |
| if (sig == NULL) |
| return; |
| if (kwonly_given) { |
| const char *format = " positional argument%s (and %zd keyword-only argument%s)"; |
| kwonly_sig = PyUnicode_FromFormat(format, |
| given != 1 ? "s" : "", |
| kwonly_given, |
| kwonly_given != 1 ? "s" : ""); |
| if (kwonly_sig == NULL) { |
| Py_DECREF(sig); |
| return; |
| } |
| } |
| else { |
| /* This will not fail. */ |
| kwonly_sig = PyUnicode_FromString(""); |
| assert(kwonly_sig != NULL); |
| } |
| PyErr_Format(PyExc_TypeError, |
| "%U() takes %U positional argument%s but %zd%U %s given", |
| co->co_name, |
| sig, |
| plural ? "s" : "", |
| given, |
| kwonly_sig, |
| given == 1 && !kwonly_given ? "was" : "were"); |
| Py_DECREF(sig); |
| Py_DECREF(kwonly_sig); |
| } |
| |
| /* This is gonna seem *real weird*, but if you put some other code between |
| PyEval_EvalFrame() and PyEval_EvalCodeEx() you will need to adjust |
| the test in the if statements in Misc/gdbinit (pystack and pystackv). */ |
| |
| PyObject * |
| _PyEval_EvalCodeWithName(PyObject *_co, PyObject *globals, PyObject *locals, |
| PyObject **args, Py_ssize_t argcount, |
| PyObject **kwnames, PyObject **kwargs, |
| Py_ssize_t kwcount, int kwstep, |
| PyObject **defs, Py_ssize_t defcount, |
| PyObject *kwdefs, PyObject *closure, |
| PyObject *name, PyObject *qualname) |
| { |
| PyCodeObject* co = (PyCodeObject*)_co; |
| PyFrameObject *f; |
| PyObject *retval = NULL; |
| PyObject **fastlocals, **freevars; |
| PyThreadState *tstate; |
| PyObject *x, *u; |
| const Py_ssize_t total_args = co->co_argcount + co->co_kwonlyargcount; |
| Py_ssize_t i, n; |
| PyObject *kwdict; |
| |
| if (globals == NULL) { |
| PyErr_SetString(PyExc_SystemError, |
| "PyEval_EvalCodeEx: NULL globals"); |
| return NULL; |
| } |
| |
| /* Create the frame */ |
| tstate = PyThreadState_GET(); |
| assert(tstate != NULL); |
| f = _PyFrame_New_NoTrack(tstate, co, globals, locals); |
| if (f == NULL) { |
| return NULL; |
| } |
| fastlocals = f->f_localsplus; |
| freevars = f->f_localsplus + co->co_nlocals; |
| |
| /* Create a dictionary for keyword parameters (**kwags) */ |
| if (co->co_flags & CO_VARKEYWORDS) { |
| kwdict = PyDict_New(); |
| if (kwdict == NULL) |
| goto fail; |
| i = total_args; |
| if (co->co_flags & CO_VARARGS) { |
| i++; |
| } |
| SETLOCAL(i, kwdict); |
| } |
| else { |
| kwdict = NULL; |
| } |
| |
| /* Copy positional arguments into local variables */ |
| if (argcount > co->co_argcount) { |
| n = co->co_argcount; |
| } |
| else { |
| n = argcount; |
| } |
| for (i = 0; i < n; i++) { |
| x = args[i]; |
| Py_INCREF(x); |
| SETLOCAL(i, x); |
| } |
| |
| /* Pack other positional arguments into the *args argument */ |
| if (co->co_flags & CO_VARARGS) { |
| u = PyTuple_New(argcount - n); |
| if (u == NULL) { |
| goto fail; |
| } |
| SETLOCAL(total_args, u); |
| for (i = n; i < argcount; i++) { |
| x = args[i]; |
| Py_INCREF(x); |
| PyTuple_SET_ITEM(u, i-n, x); |
| } |
| } |
| |
| /* Handle keyword arguments passed as two strided arrays */ |
| kwcount *= kwstep; |
| for (i = 0; i < kwcount; i += kwstep) { |
| PyObject **co_varnames; |
| PyObject *keyword = kwnames[i]; |
| PyObject *value = kwargs[i]; |
| Py_ssize_t j; |
| |
| if (keyword == NULL || !PyUnicode_Check(keyword)) { |
| PyErr_Format(PyExc_TypeError, |
| "%U() keywords must be strings", |
| co->co_name); |
| goto fail; |
| } |
| |
| /* Speed hack: do raw pointer compares. As names are |
| normally interned this should almost always hit. */ |
| co_varnames = ((PyTupleObject *)(co->co_varnames))->ob_item; |
| for (j = 0; j < total_args; j++) { |
| PyObject *name = co_varnames[j]; |
| if (name == keyword) { |
| goto kw_found; |
| } |
| } |
| |
| /* Slow fallback, just in case */ |
| for (j = 0; j < total_args; j++) { |
| PyObject *name = co_varnames[j]; |
| int cmp = PyObject_RichCompareBool( keyword, name, Py_EQ); |
| if (cmp > 0) { |
| goto kw_found; |
| } |
| else if (cmp < 0) { |
| goto fail; |
| } |
| } |
| |
| assert(j >= total_args); |
| if (kwdict == NULL) { |
| PyErr_Format(PyExc_TypeError, |
| "%U() got an unexpected keyword argument '%S'", |
| co->co_name, keyword); |
| goto fail; |
| } |
| |
| if (PyDict_SetItem(kwdict, keyword, value) == -1) { |
| goto fail; |
| } |
| continue; |
| |
| kw_found: |
| if (GETLOCAL(j) != NULL) { |
| PyErr_Format(PyExc_TypeError, |
| "%U() got multiple values for argument '%S'", |
| co->co_name, keyword); |
| goto fail; |
| } |
| Py_INCREF(value); |
| SETLOCAL(j, value); |
| } |
| |
| /* Check the number of positional arguments */ |
| if (argcount > co->co_argcount && !(co->co_flags & CO_VARARGS)) { |
| too_many_positional(co, argcount, defcount, fastlocals); |
| goto fail; |
| } |
| |
| /* Add missing positional arguments (copy default values from defs) */ |
| if (argcount < co->co_argcount) { |
| Py_ssize_t m = co->co_argcount - defcount; |
| Py_ssize_t missing = 0; |
| for (i = argcount; i < m; i++) { |
| if (GETLOCAL(i) == NULL) { |
| missing++; |
| } |
| } |
| if (missing) { |
| missing_arguments(co, missing, defcount, fastlocals); |
| 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); |
| } |
| } |
| } |
| |
| /* Add missing keyword arguments (copy default values from kwdefs) */ |
| if (co->co_kwonlyargcount > 0) { |
| Py_ssize_t missing = 0; |
| for (i = co->co_argcount; i < total_args; i++) { |
| PyObject *name; |
| if (GETLOCAL(i) != NULL) |
| continue; |
| name = PyTuple_GET_ITEM(co->co_varnames, i); |
| if (kwdefs != NULL) { |
| PyObject *def = PyDict_GetItem(kwdefs, name); |
| if (def) { |
| Py_INCREF(def); |
| SETLOCAL(i, def); |
| continue; |
| } |
| } |
| missing++; |
| } |
| if (missing) { |
| missing_arguments(co, missing, -1, fastlocals); |
| goto fail; |
| } |
| } |
| |
| /* Allocate and initialize storage for cell vars, and copy free |
| vars into frame. */ |
| for (i = 0; i < PyTuple_GET_SIZE(co->co_cellvars); ++i) { |
| PyObject *c; |
| Py_ssize_t arg; |
| /* Possibly account for the cell variable being an argument. */ |
| if (co->co_cell2arg != NULL && |
| (arg = co->co_cell2arg[i]) != CO_CELL_NOT_AN_ARG) { |
| c = PyCell_New(GETLOCAL(arg)); |
| /* Clear the local copy. */ |
| SETLOCAL(arg, NULL); |
| } |
| else { |
| c = PyCell_New(NULL); |
| } |
| if (c == NULL) |
| goto fail; |
| SETLOCAL(co->co_nlocals + i, c); |
| } |
| |
| /* Copy closure variables to free variables */ |
| for (i = 0; i < PyTuple_GET_SIZE(co->co_freevars); ++i) { |
| PyObject *o = PyTuple_GET_ITEM(closure, i); |
| Py_INCREF(o); |
| freevars[PyTuple_GET_SIZE(co->co_cellvars) + i] = o; |
| } |
| |
| /* Handle generator/coroutine/asynchronous generator */ |
| if (co->co_flags & (CO_GENERATOR | CO_COROUTINE | CO_ASYNC_GENERATOR)) { |
| PyObject *gen; |
| PyObject *coro_wrapper = tstate->coroutine_wrapper; |
| int is_coro = co->co_flags & CO_COROUTINE; |
| |
| if (is_coro && tstate->in_coroutine_wrapper) { |
| assert(coro_wrapper != NULL); |
| PyErr_Format(PyExc_RuntimeError, |
| "coroutine wrapper %.200R attempted " |
| "to recursively wrap %.200R", |
| coro_wrapper, |
| co); |
| goto fail; |
| } |
| |
| /* Don't need to keep the reference to f_back, it will be set |
| * when the generator is resumed. */ |
| Py_CLEAR(f->f_back); |
| |
| /* Create a new generator that owns the ready to run frame |
| * and return that as the value. */ |
| if (is_coro) { |
| gen = PyCoro_New(f, name, qualname); |
| } else if (co->co_flags & CO_ASYNC_GENERATOR) { |
| gen = PyAsyncGen_New(f, name, qualname); |
| } else { |
| gen = PyGen_NewWithQualName(f, name, qualname); |
| } |
| if (gen == NULL) { |
| return NULL; |
| } |
| |
| _PyObject_GC_TRACK(f); |
| |
| if (is_coro && coro_wrapper != NULL) { |
| PyObject *wrapped; |
| tstate->in_coroutine_wrapper = 1; |
| wrapped = PyObject_CallFunction(coro_wrapper, "N", gen); |
| tstate->in_coroutine_wrapper = 0; |
| return wrapped; |
| } |
| |
| return gen; |
| } |
| |
| retval = PyEval_EvalFrameEx(f,0); |
| |
| fail: /* Jump here from prelude on failure */ |
| |
| /* decref'ing the frame can cause __del__ methods to get invoked, |
| which can call back into Python. While we're done with the |
| current Python frame (f), the associated C stack is still in use, |
| so recursion_depth must be boosted for the duration. |
| */ |
| assert(tstate != NULL); |
| if (Py_REFCNT(f) > 1) { |
| Py_DECREF(f); |
| _PyObject_GC_TRACK(f); |
| } |
| else { |
| ++tstate->recursion_depth; |
| Py_DECREF(f); |
| --tstate->recursion_depth; |
| } |
| return retval; |
| } |
| |
| PyObject * |
| PyEval_EvalCodeEx(PyObject *_co, PyObject *globals, PyObject *locals, |
| PyObject **args, int argcount, PyObject **kws, int kwcount, |
| PyObject **defs, int defcount, PyObject *kwdefs, PyObject *closure) |
| { |
| return _PyEval_EvalCodeWithName(_co, globals, locals, |
| args, argcount, |
| kws, kws != NULL ? kws + 1 : NULL, |
| kwcount, 2, |
| defs, defcount, |
| kwdefs, closure, |
| NULL, NULL); |
| } |
| |
| static PyObject * |
| special_lookup(PyObject *o, _Py_Identifier *id) |
| { |
| PyObject *res; |
| res = _PyObject_LookupSpecial(o, id); |
| if (res == NULL && !PyErr_Occurred()) { |
| PyErr_SetObject(PyExc_AttributeError, id->object); |
| return NULL; |
| } |
| return res; |
| } |
| |
| |
| /* Logic for the raise statement (too complicated for inlining). |
| This *consumes* a reference count to each of its arguments. */ |
| static int |
| do_raise(PyObject *exc, PyObject *cause) |
| { |
| PyObject *type = NULL, *value = NULL; |
| |
| if (exc == NULL) { |
| /* Reraise */ |
| PyThreadState *tstate = PyThreadState_GET(); |
| _PyErr_StackItem *exc_info = _PyErr_GetTopmostException(tstate); |
| PyObject *tb; |
| type = exc_info->exc_type; |
| value = exc_info->exc_value; |
| tb = exc_info->exc_traceback; |
| if (type == Py_None || type == NULL) { |
| PyErr_SetString(PyExc_RuntimeError, |
| "No active exception to reraise"); |
| return 0; |
| } |
| Py_XINCREF(type); |
| Py_XINCREF(value); |
| Py_XINCREF(tb); |
| PyErr_Restore(type, value, tb); |
| return 1; |
| } |
| |
| /* We support the following forms of raise: |
| raise |
| raise <instance> |
| raise <type> */ |
| |
| if (PyExceptionClass_Check(exc)) { |
| type = exc; |
| value = _PyObject_CallNoArg(exc); |
| if (value == NULL) |
| goto raise_error; |
| if (!PyExceptionInstance_Check(value)) { |
| PyErr_Format(PyExc_TypeError, |
| "calling %R should have returned an instance of " |
| "BaseException, not %R", |
| type, Py_TYPE(value)); |
| goto raise_error; |
| } |
| } |
| else if (PyExceptionInstance_Check(exc)) { |
| value = exc; |
| type = PyExceptionInstance_Class(exc); |
| Py_INCREF(type); |
| } |
| else { |
| /* Not something you can raise. You get an exception |
| anyway, just not what you specified :-) */ |
| Py_DECREF(exc); |
| PyErr_SetString(PyExc_TypeError, |
| "exceptions must derive from BaseException"); |
| goto raise_error; |
| } |
| |
| assert(type != NULL); |
| assert(value != NULL); |
| |
| if (cause) { |
| PyObject *fixed_cause; |
| if (PyExceptionClass_Check(cause)) { |
| fixed_cause = _PyObject_CallNoArg(cause); |
| if (fixed_cause == NULL) |
| goto raise_error; |
| Py_DECREF(cause); |
| } |
| else if (PyExceptionInstance_Check(cause)) { |
| fixed_cause = cause; |
| } |
| else if (cause == Py_None) { |
| Py_DECREF(cause); |
| fixed_cause = NULL; |
| } |
| else { |
| PyErr_SetString(PyExc_TypeError, |
| "exception causes must derive from " |
| "BaseException"); |
| goto raise_error; |
| } |
| PyException_SetCause(value, fixed_cause); |
| } |
| |
| PyErr_SetObject(type, value); |
| /* PyErr_SetObject incref's its arguments */ |
| Py_DECREF(value); |
| Py_DECREF(type); |
| return 0; |
| |
| raise_error: |
| Py_XDECREF(value); |
| Py_XDECREF(type); |
| Py_XDECREF(cause); |
| return 0; |
| } |
| |
| /* Iterate v argcnt times and store the results on the stack (via decreasing |
| sp). Return 1 for success, 0 if error. |
| |
| If argcntafter == -1, do a simple unpack. If it is >= 0, do an unpack |
| with a variable target. |
| */ |
| |
| static int |
| unpack_iterable(PyObject *v, int argcnt, int argcntafter, PyObject **sp) |
| { |
| int i = 0, j = 0; |
| Py_ssize_t ll = 0; |
| PyObject *it; /* iter(v) */ |
| PyObject *w; |
| PyObject *l = NULL; /* variable list */ |
| |
| assert(v != NULL); |
| |
| it = PyObject_GetIter(v); |
| if (it == NULL) |
| goto Error; |
| |
| for (; i < argcnt; i++) { |
| w = PyIter_Next(it); |
| if (w == NULL) { |
| /* Iterator done, via error or exhaustion. */ |
| if (!PyErr_Occurred()) { |
| if (argcntafter == -1) { |
| PyErr_Format(PyExc_ValueError, |
| "not enough values to unpack (expected %d, got %d)", |
| argcnt, i); |
| } |
| else { |
| PyErr_Format(PyExc_ValueError, |
| "not enough values to unpack " |
| "(expected at least %d, got %d)", |
| argcnt + argcntafter, i); |
| } |
| } |
| goto Error; |
| } |
| *--sp = w; |
| } |
| |
| if (argcntafter == -1) { |
| /* We better have exhausted the iterator now. */ |
| w = PyIter_Next(it); |
| if (w == NULL) { |
| if (PyErr_Occurred()) |
| goto Error; |
| Py_DECREF(it); |
| return 1; |
| } |
| Py_DECREF(w); |
| PyErr_Format(PyExc_ValueError, |
| "too many values to unpack (expected %d)", |
| argcnt); |
| goto Error; |
| } |
| |
| l = PySequence_List(it); |
| if (l == NULL) |
| goto Error; |
| *--sp = l; |
| i++; |
| |
| ll = PyList_GET_SIZE(l); |
| if (ll < argcntafter) { |
| PyErr_Format(PyExc_ValueError, |
| "not enough values to unpack (expected at least %d, got %zd)", |
| argcnt + argcntafter, argcnt + ll); |
| goto Error; |
| } |
| |
| /* Pop the "after-variable" args off the list. */ |
| for (j = argcntafter; j > 0; j--, i++) { |
| *--sp = PyList_GET_ITEM(l, ll - j); |
| } |
| /* Resize the list. */ |
| Py_SIZE(l) = ll - argcntafter; |
| Py_DECREF(it); |
| return 1; |
| |
| Error: |
| for (; i > 0; i--, sp++) |
| Py_DECREF(*sp); |
| Py_XDECREF(it); |
| return 0; |
| } |
| |
| |
| #ifdef LLTRACE |
| static int |
| prtrace(PyObject *v, const char *str) |
| { |
| printf("%s ", str); |
| if (PyObject_Print(v, stdout, 0) != 0) |
| PyErr_Clear(); /* Don't know what else to do */ |
| printf("\n"); |
| return 1; |
| } |
| #endif |
| |
| static void |
| call_exc_trace(Py_tracefunc func, PyObject *self, |
| PyThreadState *tstate, PyFrameObject *f) |
| { |
| PyObject *type, *value, *traceback, *orig_traceback, *arg; |
| int err; |
| PyErr_Fetch(&type, &value, &orig_traceback); |
| if (value == NULL) { |
| value = Py_None; |
| Py_INCREF(value); |
| } |
| PyErr_NormalizeException(&type, &value, &orig_traceback); |
| traceback = (orig_traceback != NULL) ? orig_traceback : Py_None; |
| arg = PyTuple_Pack(3, type, value, traceback); |
| if (arg == NULL) { |
| PyErr_Restore(type, value, orig_traceback); |
| return; |
| } |
| err = call_trace(func, self, tstate, f, PyTrace_EXCEPTION, arg); |
| Py_DECREF(arg); |
| if (err == 0) |
| PyErr_Restore(type, value, orig_traceback); |
| else { |
| Py_XDECREF(type); |
| Py_XDECREF(value); |
| Py_XDECREF(orig_traceback); |
| } |
| } |
| |
| static int |
| call_trace_protected(Py_tracefunc func, PyObject *obj, |
| PyThreadState *tstate, PyFrameObject *frame, |
| int what, PyObject *arg) |
| { |
| PyObject *type, *value, *traceback; |
| int err; |
| PyErr_Fetch(&type, &value, &traceback); |
| err = call_trace(func, obj, tstate, frame, what, arg); |
| if (err == 0) |
| { |
| PyErr_Restore(type, value, traceback); |
| return 0; |
| } |
| else { |
| Py_XDECREF(type); |
| Py_XDECREF(value); |
| Py_XDECREF(traceback); |
| return -1; |
| } |
| } |
| |
| static int |
| call_trace(Py_tracefunc func, PyObject *obj, |
| PyThreadState *tstate, PyFrameObject *frame, |
| int what, PyObject *arg) |
| { |
| int result; |
| if (tstate->tracing) |
| return 0; |
| tstate->tracing++; |
| tstate->use_tracing = 0; |
| result = func(obj, frame, what, arg); |
| tstate->use_tracing = ((tstate->c_tracefunc != NULL) |
| || (tstate->c_profilefunc != NULL)); |
| tstate->tracing--; |
| return result; |
| } |
| |
| PyObject * |
| _PyEval_CallTracing(PyObject *func, PyObject *args) |
| { |
| PyThreadState *tstate = PyThreadState_GET(); |
| int save_tracing = tstate->tracing; |
| int save_use_tracing = tstate->use_tracing; |
| PyObject *result; |
| |
| tstate->tracing = 0; |
| tstate->use_tracing = ((tstate->c_tracefunc != NULL) |
| || (tstate->c_profilefunc != NULL)); |
| result = PyObject_Call(func, args, NULL); |
| tstate->tracing = save_tracing; |
| tstate->use_tracing = save_use_tracing; |
| return result; |
| } |
| |
| /* See Objects/lnotab_notes.txt for a description of how tracing works. */ |
| static int |
| maybe_call_line_trace(Py_tracefunc func, PyObject *obj, |
| PyThreadState *tstate, PyFrameObject *frame, |
| int *instr_lb, int *instr_ub, int *instr_prev) |
| { |
| int result = 0; |
| int line = frame->f_lineno; |
| |
| /* If the last instruction executed isn't in the current |
| instruction window, reset the window. |
| */ |
| if (frame->f_lasti < *instr_lb || frame->f_lasti >= *instr_ub) { |
| PyAddrPair bounds; |
| line = _PyCode_CheckLineNumber(frame->f_code, frame->f_lasti, |
| &bounds); |
| *instr_lb = bounds.ap_lower; |
| *instr_ub = bounds.ap_upper; |
| } |
| /* If the last instruction falls at the start of a line or if it |
| represents a jump backwards, update the frame's line number and |
| then call the trace function if we're tracing source lines. |
| */ |
| if ((frame->f_lasti == *instr_lb || frame->f_lasti < *instr_prev)) { |
| frame->f_lineno = line; |
| if (frame->f_trace_lines) { |
| result = call_trace(func, obj, tstate, frame, PyTrace_LINE, Py_None); |
| } |
| } |
| /* Always emit an opcode event if we're tracing all opcodes. */ |
| if (frame->f_trace_opcodes) { |
| result = call_trace(func, obj, tstate, frame, PyTrace_OPCODE, Py_None); |
| } |
| *instr_prev = frame->f_lasti; |
| return result; |
| } |
| |
| void |
| PyEval_SetProfile(Py_tracefunc func, PyObject *arg) |
| { |
| PyThreadState *tstate = PyThreadState_GET(); |
| PyObject *temp = tstate->c_profileobj; |
| Py_XINCREF(arg); |
| tstate->c_profilefunc = NULL; |
| tstate->c_profileobj = NULL; |
| /* Must make sure that tracing is not ignored if 'temp' is freed */ |
| tstate->use_tracing = tstate->c_tracefunc != NULL; |
| Py_XDECREF(temp); |
| tstate->c_profilefunc = func; |
| tstate->c_profileobj = arg; |
| /* Flag that tracing or profiling is turned on */ |
| tstate->use_tracing = (func != NULL) || (tstate->c_tracefunc != NULL); |
| } |
| |
| void |
| PyEval_SetTrace(Py_tracefunc func, PyObject *arg) |
| { |
| PyThreadState *tstate = PyThreadState_GET(); |
| PyObject *temp = tstate->c_traceobj; |
| _Py_TracingPossible += (func != NULL) - (tstate->c_tracefunc != NULL); |
| Py_XINCREF(arg); |
| tstate->c_tracefunc = NULL; |
| tstate->c_traceobj = NULL; |
| /* Must make sure that profiling is not ignored if 'temp' is freed */ |
| tstate->use_tracing = tstate->c_profilefunc != NULL; |
| Py_XDECREF(temp); |
| tstate->c_tracefunc = func; |
| tstate->c_traceobj = arg; |
| /* Flag that tracing or profiling is turned on */ |
| tstate->use_tracing = ((func != NULL) |
| || (tstate->c_profilefunc != NULL)); |
| } |
| |
| void |
| _PyEval_SetCoroutineWrapper(PyObject *wrapper) |
| { |
| PyThreadState *tstate = PyThreadState_GET(); |
| |
| Py_XINCREF(wrapper); |
| Py_XSETREF(tstate->coroutine_wrapper, wrapper); |
| } |
| |
| PyObject * |
| _PyEval_GetCoroutineWrapper(void) |
| { |
| PyThreadState *tstate = PyThreadState_GET(); |
| return tstate->coroutine_wrapper; |
| } |
| |
| void |
| _PyEval_SetAsyncGenFirstiter(PyObject *firstiter) |
| { |
| PyThreadState *tstate = PyThreadState_GET(); |
| |
| Py_XINCREF(firstiter); |
| Py_XSETREF(tstate->async_gen_firstiter, firstiter); |
| } |
| |
| PyObject * |
| _PyEval_GetAsyncGenFirstiter(void) |
| { |
| PyThreadState *tstate = PyThreadState_GET(); |
| return tstate->async_gen_firstiter; |
| } |
| |
| void |
| _PyEval_SetAsyncGenFinalizer(PyObject *finalizer) |
| { |
| PyThreadState *tstate = PyThreadState_GET(); |
| |
| Py_XINCREF(finalizer); |
| Py_XSETREF(tstate->async_gen_finalizer, finalizer); |
| } |
| |
| PyObject * |
| _PyEval_GetAsyncGenFinalizer(void) |
| { |
| PyThreadState *tstate = PyThreadState_GET(); |
| return tstate->async_gen_finalizer; |
| } |
| |
| PyObject * |
| PyEval_GetBuiltins(void) |
| { |
| PyFrameObject *current_frame = PyEval_GetFrame(); |
| if (current_frame == NULL) |
| return PyThreadState_GET()->interp->builtins; |
| else |
| return current_frame->f_builtins; |
| } |
| |
| PyObject * |
| PyEval_GetLocals(void) |
| { |
| PyFrameObject *current_frame = PyEval_GetFrame(); |
| if (current_frame == NULL) { |
| PyErr_SetString(PyExc_SystemError, "frame does not exist"); |
| return NULL; |
| } |
| |
| if (PyFrame_FastToLocalsWithError(current_frame) < 0) |
| return NULL; |
| |
| assert(current_frame->f_locals != NULL); |
| return current_frame->f_locals; |
| } |
| |
| PyObject * |
| PyEval_GetGlobals(void) |
| { |
| PyFrameObject *current_frame = PyEval_GetFrame(); |
| if (current_frame == NULL) |
| return NULL; |
| |
| assert(current_frame->f_globals != NULL); |
| return current_frame->f_globals; |
| } |
| |
| PyFrameObject * |
| PyEval_GetFrame(void) |
| { |
| PyThreadState *tstate = PyThreadState_GET(); |
| return _PyThreadState_GetFrame(tstate); |
| } |
| |
| int |
| PyEval_MergeCompilerFlags(PyCompilerFlags *cf) |
| { |
| PyFrameObject *current_frame = PyEval_GetFrame(); |
| int result = cf->cf_flags != 0; |
| |
| if (current_frame != NULL) { |
| const int codeflags = current_frame->f_code->co_flags; |
| const int compilerflags = codeflags & PyCF_MASK; |
| if (compilerflags) { |
| result = 1; |
| cf->cf_flags |= compilerflags; |
| } |
| #if 0 /* future keyword */ |
| if (codeflags & CO_GENERATOR_ALLOWED) { |
| result = 1; |
| cf->cf_flags |= CO_GENERATOR_ALLOWED; |
| } |
| #endif |
| } |
| return result; |
| } |
| |
| |
| const char * |
| PyEval_GetFuncName(PyObject *func) |
| { |
| if (PyMethod_Check(func)) |
| return PyEval_GetFuncName(PyMethod_GET_FUNCTION(func)); |
| else if (PyFunction_Check(func)) |
| return PyUnicode_AsUTF8(((PyFunctionObject*)func)->func_name); |
| else if (PyCFunction_Check(func)) |
| return ((PyCFunctionObject*)func)->m_ml->ml_name; |
| else |
| return func->ob_type->tp_name; |
| } |
| |
| const char * |
| PyEval_GetFuncDesc(PyObject *func) |
| { |
| if (PyMethod_Check(func)) |
| return "()"; |
| else if (PyFunction_Check(func)) |
| return "()"; |
| else if (PyCFunction_Check(func)) |
| return "()"; |
| else |
| return " object"; |
| } |
| |
| #define C_TRACE(x, call) \ |
| if (tstate->use_tracing && tstate->c_profilefunc) { \ |
| if (call_trace(tstate->c_profilefunc, tstate->c_profileobj, \ |
| tstate, tstate->frame, \ |
| PyTrace_C_CALL, func)) { \ |
| x = NULL; \ |
| } \ |
| else { \ |
| x = call; \ |
| if (tstate->c_profilefunc != NULL) { \ |
| if (x == NULL) { \ |
| call_trace_protected(tstate->c_profilefunc, \ |
| tstate->c_profileobj, \ |
| tstate, tstate->frame, \ |
| PyTrace_C_EXCEPTION, func); \ |
| /* XXX should pass (type, value, tb) */ \ |
| } else { \ |
| if (call_trace(tstate->c_profilefunc, \ |
| tstate->c_profileobj, \ |
| tstate, tstate->frame, \ |
| PyTrace_C_RETURN, func)) { \ |
| Py_DECREF(x); \ |
| x = NULL; \ |
| } \ |
| } \ |
| } \ |
| } \ |
| } else { \ |
| x = call; \ |
| } |
| |
| /* Issue #29227: Inline call_function() into _PyEval_EvalFrameDefault() |
| to reduce the stack consumption. */ |
| Py_LOCAL_INLINE(PyObject *) _Py_HOT_FUNCTION |
| call_function(PyObject ***pp_stack, Py_ssize_t oparg, PyObject *kwnames) |
| { |
| PyObject **pfunc = (*pp_stack) - oparg - 1; |
| PyObject *func = *pfunc; |
| PyObject *x, *w; |
| Py_ssize_t nkwargs = (kwnames == NULL) ? 0 : PyTuple_GET_SIZE(kwnames); |
| Py_ssize_t nargs = oparg - nkwargs; |
| PyObject **stack = (*pp_stack) - nargs - nkwargs; |
| |
| /* Always dispatch PyCFunction first, because these are |
| presumed to be the most frequent callable object. |
| */ |
| if (PyCFunction_Check(func)) { |
| PyThreadState *tstate = PyThreadState_GET(); |
| C_TRACE(x, _PyCFunction_FastCallKeywords(func, stack, nargs, kwnames)); |
| } |
| else if (Py_TYPE(func) == &PyMethodDescr_Type) { |
| PyThreadState *tstate = PyThreadState_GET(); |
| if (tstate->use_tracing && tstate->c_profilefunc) { |
| // We need to create PyCFunctionObject for tracing. |
| PyMethodDescrObject *descr = (PyMethodDescrObject*)func; |
| func = PyCFunction_NewEx(descr->d_method, stack[0], NULL); |
| if (func == NULL) { |
| return NULL; |
| } |
| C_TRACE(x, _PyCFunction_FastCallKeywords(func, stack+1, nargs-1, |
| kwnames)); |
| Py_DECREF(func); |
| } |
| else { |
| x = _PyMethodDescr_FastCallKeywords(func, stack, nargs, kwnames); |
| } |
| } |
| else { |
| if (PyMethod_Check(func) && PyMethod_GET_SELF(func) != NULL) { |
| /* Optimize access to bound methods. Reuse the Python stack |
| to pass 'self' as the first argument, replace 'func' |
| with 'self'. It avoids the creation of a new temporary tuple |
| for arguments (to replace func with self) when the method uses |
| FASTCALL. */ |
| PyObject *self = PyMethod_GET_SELF(func); |
| Py_INCREF(self); |
| func = PyMethod_GET_FUNCTION(func); |
| Py_INCREF(func); |
| Py_SETREF(*pfunc, self); |
| nargs++; |
| stack--; |
| } |
| else { |
| Py_INCREF(func); |
| } |
| |
| if (PyFunction_Check(func)) { |
| x = _PyFunction_FastCallKeywords(func, stack, nargs, kwnames); |
| } |
| else { |
| x = _PyObject_FastCallKeywords(func, stack, nargs, kwnames); |
| } |
| Py_DECREF(func); |
| } |
| |
| assert((x != NULL) ^ (PyErr_Occurred() != NULL)); |
| |
| /* Clear the stack of the function object. */ |
| while ((*pp_stack) > pfunc) { |
| w = EXT_POP(*pp_stack); |
| Py_DECREF(w); |
| } |
| |
| return x; |
| } |
| |
| static PyObject * |
| do_call_core(PyObject *func, PyObject *callargs, PyObject *kwdict) |
| { |
| if (PyCFunction_Check(func)) { |
| PyObject *result; |
| PyThreadState *tstate = PyThreadState_GET(); |
| C_TRACE(result, PyCFunction_Call(func, callargs, kwdict)); |
| return result; |
| } |
| else { |
| return PyObject_Call(func, callargs, kwdict); |
| } |
| } |
| |
| /* Extract a slice index from a PyLong or an object with the |
| nb_index slot defined, and store in *pi. |
| Silently reduce values larger than PY_SSIZE_T_MAX to PY_SSIZE_T_MAX, |
| and silently boost values less than PY_SSIZE_T_MIN to PY_SSIZE_T_MIN. |
| Return 0 on error, 1 on success. |
| */ |
| int |
| _PyEval_SliceIndex(PyObject *v, Py_ssize_t *pi) |
| { |
| if (v != Py_None) { |
| Py_ssize_t x; |
| if (PyIndex_Check(v)) { |
| x = PyNumber_AsSsize_t(v, NULL); |
| if (x == -1 && PyErr_Occurred()) |
| return 0; |
| } |
| else { |
| PyErr_SetString(PyExc_TypeError, |
| "slice indices must be integers or " |
| "None or have an __index__ method"); |
| return 0; |
| } |
| *pi = x; |
| } |
| return 1; |
| } |
| |
| int |
| _PyEval_SliceIndexNotNone(PyObject *v, Py_ssize_t *pi) |
| { |
| Py_ssize_t x; |
| if (PyIndex_Check(v)) { |
| x = PyNumber_AsSsize_t(v, NULL); |
| if (x == -1 && PyErr_Occurred()) |
| return 0; |
| } |
| else { |
| PyErr_SetString(PyExc_TypeError, |
| "slice indices must be integers or " |
| "have an __index__ method"); |
| return 0; |
| } |
| *pi = x; |
| return 1; |
| } |
| |
| |
| #define CANNOT_CATCH_MSG "catching classes that do not inherit from "\ |
| "BaseException is not allowed" |
| |
| static PyObject * |
| cmp_outcome(int op, PyObject *v, PyObject *w) |
| { |
| int res = 0; |
| switch (op) { |
| case PyCmp_IS: |
| res = (v == w); |
| break; |
| case PyCmp_IS_NOT: |
| res = (v != w); |
| break; |
| case PyCmp_IN: |
| res = PySequence_Contains(w, v); |
| if (res < 0) |
| return NULL; |
| break; |
| case PyCmp_NOT_IN: |
| res = PySequence_Contains(w, v); |
| if (res < 0) |
| return NULL; |
| res = !res; |
| break; |
| case PyCmp_EXC_MATCH: |
| if (PyTuple_Check(w)) { |
| Py_ssize_t i, length; |
| length = PyTuple_Size(w); |
| for (i = 0; i < length; i += 1) { |
| PyObject *exc = PyTuple_GET_ITEM(w, i); |
| if (!PyExceptionClass_Check(exc)) { |
| PyErr_SetString(PyExc_TypeError, |
| CANNOT_CATCH_MSG); |
| return NULL; |
| } |
| } |
| } |
| else { |
| if (!PyExceptionClass_Check(w)) { |
| PyErr_SetString(PyExc_TypeError, |
| CANNOT_CATCH_MSG); |
| return NULL; |
| } |
| } |
| res = PyErr_GivenExceptionMatches(v, w); |
| break; |
| default: |
| return PyObject_RichCompare(v, w, op); |
| } |
| v = res ? Py_True : Py_False; |
| Py_INCREF(v); |
| return v; |
| } |
| |
| static PyObject * |
| import_name(PyFrameObject *f, PyObject *name, PyObject *fromlist, PyObject *level) |
| { |
| _Py_IDENTIFIER(__import__); |
| PyObject *import_func, *res; |
| PyObject* stack[5]; |
| |
| import_func = _PyDict_GetItemId(f->f_builtins, &PyId___import__); |
| if (import_func == NULL) { |
| PyErr_SetString(PyExc_ImportError, "__import__ not found"); |
| return NULL; |
| } |
| |
| /* Fast path for not overloaded __import__. */ |
| if (import_func == PyThreadState_GET()->interp->import_func) { |
| int ilevel = _PyLong_AsInt(level); |
| if (ilevel == -1 && PyErr_Occurred()) { |
| return NULL; |
| } |
| res = PyImport_ImportModuleLevelObject( |
| name, |
| f->f_globals, |
| f->f_locals == NULL ? Py_None : f->f_locals, |
| fromlist, |
| ilevel); |
| return res; |
| } |
| |
| Py_INCREF(import_func); |
| |
| stack[0] = name; |
| stack[1] = f->f_globals; |
| stack[2] = f->f_locals == NULL ? Py_None : f->f_locals; |
| stack[3] = fromlist; |
| stack[4] = level; |
| res = _PyObject_FastCall(import_func, stack, 5); |
| Py_DECREF(import_func); |
| return res; |
| } |
| |
| static PyObject * |
| import_from(PyObject *v, PyObject *name) |
| { |
| PyObject *x; |
| _Py_IDENTIFIER(__name__); |
| PyObject *fullmodname, *pkgname, *pkgpath, *pkgname_or_unknown, *errmsg; |
| |
| x = PyObject_GetAttr(v, name); |
| if (x != NULL || !PyErr_ExceptionMatches(PyExc_AttributeError)) |
| return x; |
| /* Issue #17636: in case this failed because of a circular relative |
| import, try to fallback on reading the module directly from |
| sys.modules. */ |
| PyErr_Clear(); |
| pkgname = _PyObject_GetAttrId(v, &PyId___name__); |
| if (pkgname == NULL) { |
| goto error; |
| } |
| if (!PyUnicode_Check(pkgname)) { |
| Py_CLEAR(pkgname); |
| goto error; |
| } |
| fullmodname = PyUnicode_FromFormat("%U.%U", pkgname, name); |
| if (fullmodname == NULL) { |
| Py_DECREF(pkgname); |
| return NULL; |
| } |
| x = PyImport_GetModule(fullmodname); |
| Py_DECREF(fullmodname); |
| if (x == NULL) { |
| goto error; |
| } |
| Py_DECREF(pkgname); |
| return x; |
| error: |
| pkgpath = PyModule_GetFilenameObject(v); |
| if (pkgname == NULL) { |
| pkgname_or_unknown = PyUnicode_FromString("<unknown module name>"); |
| if (pkgname_or_unknown == NULL) { |
| Py_XDECREF(pkgpath); |
| return NULL; |
| } |
| } else { |
| pkgname_or_unknown = pkgname; |
| } |
| |
| if (pkgpath == NULL || !PyUnicode_Check(pkgpath)) { |
| PyErr_Clear(); |
| errmsg = PyUnicode_FromFormat( |
| "cannot import name %R from %R (unknown location)", |
| name, pkgname_or_unknown |
| ); |
| /* NULL check for errmsg done by PyErr_SetImportError. */ |
| PyErr_SetImportError(errmsg, pkgname, NULL); |
| } |
| else { |
| errmsg = PyUnicode_FromFormat( |
| "cannot import name %R from %R (%S)", |
| name, pkgname_or_unknown, pkgpath |
| ); |
| /* NULL check for errmsg done by PyErr_SetImportError. */ |
| PyErr_SetImportError(errmsg, pkgname, pkgpath); |
| } |
| |
| Py_XDECREF(errmsg); |
| Py_XDECREF(pkgname_or_unknown); |
| Py_XDECREF(pkgpath); |
| return NULL; |
| } |
| |
| static int |
| import_all_from(PyObject *locals, PyObject *v) |
| { |
| _Py_IDENTIFIER(__all__); |
| _Py_IDENTIFIER(__dict__); |
| PyObject *all = _PyObject_GetAttrId(v, &PyId___all__); |
| PyObject *dict, *name, *value; |
| int skip_leading_underscores = 0; |
| int pos, err; |
| |
| if (all == NULL) { |
| if (!PyErr_ExceptionMatches(PyExc_AttributeError)) |
| return -1; /* Unexpected error */ |
| PyErr_Clear(); |
| dict = _PyObject_GetAttrId(v, &PyId___dict__); |
| if (dict == NULL) { |
| if (!PyErr_ExceptionMatches(PyExc_AttributeError)) |
| return -1; |
| PyErr_SetString(PyExc_ImportError, |
| "from-import-* object has no __dict__ and no __all__"); |
| return -1; |
| } |
| all = PyMapping_Keys(dict); |
| Py_DECREF(dict); |
| if (all == NULL) |
| return -1; |
| skip_leading_underscores = 1; |
| } |
| |
| for (pos = 0, err = 0; ; pos++) { |
| name = PySequence_GetItem(all, pos); |
| if (name == NULL) { |
| if (!PyErr_ExceptionMatches(PyExc_IndexError)) |
| err = -1; |
| else |
| PyErr_Clear(); |
| break; |
| } |
| if (skip_leading_underscores && PyUnicode_Check(name)) { |
| if (PyUnicode_READY(name) == -1) { |
| Py_DECREF(name); |
| err = -1; |
| break; |
| } |
| if (PyUnicode_READ_CHAR(name, 0) == '_') { |
| Py_DECREF(name); |
| continue; |
| } |
| } |
| value = PyObject_GetAttr(v, name); |
| if (value == NULL) |
| err = -1; |
| else if (PyDict_CheckExact(locals)) |
| err = PyDict_SetItem(locals, name, value); |
| else |
| err = PyObject_SetItem(locals, name, value); |
| Py_DECREF(name); |
| Py_XDECREF(value); |
| if (err != 0) |
| break; |
| } |
| Py_DECREF(all); |
| return err; |
| } |
| |
| static int |
| check_args_iterable(PyObject *func, PyObject *args) |
| { |
| if (args->ob_type->tp_iter == NULL && !PySequence_Check(args)) { |
| PyErr_Format(PyExc_TypeError, |
| "%.200s%.200s argument after * " |
| "must be an iterable, not %.200s", |
| PyEval_GetFuncName(func), |
| PyEval_GetFuncDesc(func), |
| args->ob_type->tp_name); |
| return -1; |
| } |
| return 0; |
| } |
| |
| static void |
| format_kwargs_mapping_error(PyObject *func, PyObject *kwargs) |
| { |
| PyErr_Format(PyExc_TypeError, |
| "%.200s%.200s argument after ** " |
| "must be a mapping, not %.200s", |
| PyEval_GetFuncName(func), |
| PyEval_GetFuncDesc(func), |
| kwargs->ob_type->tp_name); |
| } |
| |
| static void |
| format_exc_check_arg(PyObject *exc, const char *format_str, PyObject *obj) |
| { |
| const char *obj_str; |
| |
| if (!obj) |
| return; |
| |
| obj_str = PyUnicode_AsUTF8(obj); |
| if (!obj_str) |
| return; |
| |
| PyErr_Format(exc, format_str, obj_str); |
| } |
| |
| static void |
| format_exc_unbound(PyCodeObject *co, int oparg) |
| { |
| PyObject *name; |
| /* Don't stomp existing exception */ |
| if (PyErr_Occurred()) |
| return; |
| if (oparg < PyTuple_GET_SIZE(co->co_cellvars)) { |
| name = PyTuple_GET_ITEM(co->co_cellvars, |
| oparg); |
| format_exc_check_arg( |
| PyExc_UnboundLocalError, |
| UNBOUNDLOCAL_ERROR_MSG, |
| name); |
| } else { |
| name = PyTuple_GET_ITEM(co->co_freevars, oparg - |
| PyTuple_GET_SIZE(co->co_cellvars)); |
| format_exc_check_arg(PyExc_NameError, |
| UNBOUNDFREE_ERROR_MSG, name); |
| } |
| } |
| |
| static PyObject * |
| unicode_concatenate(PyObject *v, PyObject *w, |
| PyFrameObject *f, const _Py_CODEUNIT *next_instr) |
| { |
| PyObject *res; |
| if (Py_REFCNT(v) == 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. |
| */ |
| int opcode, oparg; |
| NEXTOPARG(); |
| switch (opcode) { |
| case STORE_FAST: |
| { |
| PyObject **fastlocals = f->f_localsplus; |
| if (GETLOCAL(oparg) == v) |
| SETLOCAL(oparg, NULL); |
| break; |
| } |
| case STORE_DEREF: |
| { |
| PyObject **freevars = (f->f_localsplus + |
| f->f_code->co_nlocals); |
| PyObject *c = freevars[oparg]; |
| if (PyCell_GET(c) == v) { |
| PyCell_SET(c, NULL); |
| Py_DECREF(v); |
| } |
| break; |
| } |
| case STORE_NAME: |
| { |
| PyObject *names = f->f_code->co_names; |
| PyObject *name = GETITEM(names, oparg); |
| PyObject *locals = f->f_locals; |
| if (PyDict_CheckExact(locals) && |
| PyDict_GetItem(locals, name) == v) { |
| if (PyDict_DelItem(locals, name) != 0) { |
| PyErr_Clear(); |
| } |
| } |
| break; |
| } |
| } |
| } |
| res = v; |
| PyUnicode_Append(&res, w); |
| return res; |
| } |
| |
| #ifdef DYNAMIC_EXECUTION_PROFILE |
| |
| static PyObject * |
| getarray(long a[256]) |
| { |
| int i; |
| PyObject *l = PyList_New(256); |
| if (l == NULL) return NULL; |
| for (i = 0; i < 256; i++) { |
| PyObject *x = PyLong_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(PyObject *self, PyObject *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 |
| |
| Py_ssize_t |
| _PyEval_RequestCodeExtraIndex(freefunc free) |
| { |
| PyInterpreterState *interp = PyThreadState_Get()->interp; |
| Py_ssize_t new_index; |
| |
| if (interp->co_extra_user_count == MAX_CO_EXTRA_USERS - 1) { |
| return -1; |
| } |
| new_index = interp->co_extra_user_count++; |
| interp->co_extra_freefuncs[new_index] = free; |
| return new_index; |
| } |
| |
| static void |
| dtrace_function_entry(PyFrameObject *f) |
| { |
| const char *filename; |
| const char *funcname; |
| int lineno; |
| |
| filename = PyUnicode_AsUTF8(f->f_code->co_filename); |
| funcname = PyUnicode_AsUTF8(f->f_code->co_name); |
| lineno = PyCode_Addr2Line(f->f_code, f->f_lasti); |
| |
| PyDTrace_FUNCTION_ENTRY(filename, funcname, lineno); |
| } |
| |
| static void |
| dtrace_function_return(PyFrameObject *f) |
| { |
| const char *filename; |
| const char *funcname; |
| int lineno; |
| |
| filename = PyUnicode_AsUTF8(f->f_code->co_filename); |
| funcname = PyUnicode_AsUTF8(f->f_code->co_name); |
| lineno = PyCode_Addr2Line(f->f_code, f->f_lasti); |
| |
| PyDTrace_FUNCTION_RETURN(filename, funcname, lineno); |
| } |
| |
| /* DTrace equivalent of maybe_call_line_trace. */ |
| static void |
| maybe_dtrace_line(PyFrameObject *frame, |
| int *instr_lb, int *instr_ub, int *instr_prev) |
| { |
| int line = frame->f_lineno; |
| const char *co_filename, *co_name; |
| |
| /* If the last instruction executed isn't in the current |
| instruction window, reset the window. |
| */ |
| if (frame->f_lasti < *instr_lb || frame->f_lasti >= *instr_ub) { |
| PyAddrPair bounds; |
| line = _PyCode_CheckLineNumber(frame->f_code, frame->f_lasti, |
| &bounds); |
| *instr_lb = bounds.ap_lower; |
| *instr_ub = bounds.ap_upper; |
| } |
| /* If the last instruction falls at the start of a line or if |
| it represents a jump backwards, update the frame's line |
| number and call the trace function. */ |
| if (frame->f_lasti == *instr_lb || frame->f_lasti < *instr_prev) { |
| frame->f_lineno = line; |
| co_filename = PyUnicode_AsUTF8(frame->f_code->co_filename); |
| if (!co_filename) |
| co_filename = "?"; |
| co_name = PyUnicode_AsUTF8(frame->f_code->co_name); |
| if (!co_name) |
| co_name = "?"; |
| PyDTrace_LINE(co_filename, co_name, line); |
| } |
| *instr_prev = frame->f_lasti; |
| } |