mirror of
https://github.com/python/cpython.git
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67a5fdbcc2
* traceback.c (tb_print): use sys.tracebacklimit as a maximum number of traceback entries to print (default 1000). * ceval.c (printtraceback): Don't print stack trace header -- this is now done by tb_print().
2569 lines
51 KiB
C
2569 lines
51 KiB
C
/***********************************************************
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Copyright 1991, 1992, 1993 by Stichting Mathematisch Centrum,
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Amsterdam, The Netherlands.
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee is hereby granted,
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provided that the above copyright notice appear in all copies and that
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both that copyright notice and this permission notice appear in
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supporting documentation, and that the names of Stichting Mathematisch
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Centrum or CWI not be used in advertising or publicity pertaining to
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distribution of the software without specific, written prior permission.
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STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
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THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
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FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
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OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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******************************************************************/
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/* Execute compiled code */
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#include "allobjects.h"
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#include "import.h"
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#include "sysmodule.h"
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#include "compile.h"
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#include "frameobject.h"
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#include "eval.h"
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#include "ceval.h"
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#include "opcode.h"
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#include "bltinmodule.h"
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#include "traceback.h"
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#include "graminit.h"
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#include "pythonrun.h"
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#include <ctype.h>
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/* Turn this on if your compiler chokes on the big switch: */
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/* #define CASE_TOO_BIG 1 /**/
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/* Turn this on if you want to debug the interpreter: */
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/* (This can be on even if NDEBUG is defined) */
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/* #define DEBUG 1 /**/
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#if defined(DEBUG) || !defined(NDEBUG)
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/* For debugging the interpreter: */
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#define LLTRACE 1 /* Low-level trace feature */
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#define CHECKEXC 1 /* Double-check exception checking */
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#endif
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/* Global option, may be set by main() */
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int killprint;
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/* Forward declarations */
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#ifdef LLTRACE
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static int prtrace PROTO((object *, char *));
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#endif
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static void call_exc_trace PROTO((object **, object**, frameobject *));
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static int call_trace
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PROTO((object **, object **, frameobject *, char *, object *));
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static object *add PROTO((object *, object *));
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static object *sub PROTO((object *, object *));
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static object *mul PROTO((object *, object *));
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static object *divide PROTO((object *, object *));
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static object *rem PROTO((object *, object *));
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static object *neg PROTO((object *));
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static object *pos PROTO((object *));
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static object *not PROTO((object *));
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static object *invert PROTO((object *));
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static object *lshift PROTO((object *, object *));
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static object *rshift PROTO((object *, object *));
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static object *and PROTO((object *, object *));
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static object *xor PROTO((object *, object *));
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static object *or PROTO((object *, object *));
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static object *call_builtin PROTO((object *, object *));
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static object *call_function PROTO((object *, object *));
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static object *apply_subscript PROTO((object *, object *));
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static object *loop_subscript PROTO((object *, object *));
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static int slice_index PROTO((object *, int, int *));
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static object *apply_slice PROTO((object *, object *, object *));
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static int assign_subscript PROTO((object *, object *, object *));
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static int assign_slice PROTO((object *, object *, object *, object *));
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static int cmp_exception PROTO((object *, object *));
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static int cmp_member PROTO((object *, object *));
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static object *cmp_outcome PROTO((int, object *, object *));
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static int import_from PROTO((object *, object *, object *));
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static object *build_class PROTO((object *, object *, object *));
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static void locals_2_fast PROTO((frameobject *, int));
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static void fast_2_locals PROTO((frameobject *));
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static int access_statement PROTO((object *, object *, frameobject *));
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static int exec_statement PROTO((object *, object *, object *));
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static void mergelocals PROTO(());
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/* Pointer to current frame, used to link new frames to */
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static frameobject *current_frame;
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#ifdef USE_THREAD
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#include <errno.h>
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#include "thread.h"
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static type_lock interpreter_lock;
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void
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init_save_thread()
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{
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if (interpreter_lock)
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return;
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interpreter_lock = allocate_lock();
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acquire_lock(interpreter_lock, 1);
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}
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#endif
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/* Functions save_thread and restore_thread are always defined so
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dynamically loaded modules needn't be compiled separately for use
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with and without threads: */
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object *
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save_thread()
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{
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#ifdef USE_THREAD
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if (interpreter_lock) {
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object *res;
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res = (object *)current_frame;
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current_frame = NULL;
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release_lock(interpreter_lock);
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return res;
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}
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#endif
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return NULL;
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}
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void
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restore_thread(x)
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object *x;
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{
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#ifdef USE_THREAD
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if (interpreter_lock) {
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int err;
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err = errno;
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acquire_lock(interpreter_lock, 1);
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errno = err;
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current_frame = (frameobject *)x;
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}
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#endif
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}
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/* Status code for main loop (reason for stack unwind) */
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enum why_code {
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WHY_NOT, /* No error */
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WHY_EXCEPTION, /* Exception occurred */
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WHY_RERAISE, /* Exception re-raised by 'finally' */
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WHY_RETURN, /* 'return' statement */
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WHY_BREAK /* 'break' statement */
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};
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/* Interpreter main loop */
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object *
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eval_code(co, globals, locals, owner, arg)
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codeobject *co;
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object *globals;
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object *locals;
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object *owner;
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object *arg;
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{
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register unsigned char *next_instr;
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register int opcode; /* Current opcode */
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register int oparg; /* Current opcode argument, if any */
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register object **stack_pointer;
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register enum why_code why; /* Reason for block stack unwind */
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register int err; /* Error status -- nonzero if error */
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register object *x; /* Result object -- NULL if error */
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register object *v; /* Temporary objects popped off stack */
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register object *w;
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register object *u;
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register object *t;
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register frameobject *f; /* Current frame */
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register listobject *fastlocals = NULL;
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object *trace = NULL; /* Trace function or NULL */
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object *retval; /* Return value iff why == WHY_RETURN */
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char *name; /* Name used by some instructions */
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int needmerge = 0; /* Set if need to merge locals back at end */
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int defmode = 0; /* Default access mode for new variables */
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#ifdef LLTRACE
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int lltrace;
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#endif
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#ifdef DEBUG
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/* Make it easier to find out where we are with dbx */
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char *filename = getstringvalue(co->co_filename);
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#endif
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/* Code access macros */
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#define GETCONST(i) Getconst(f, i)
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#define GETNAME(i) Getname(f, i)
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#define GETNAMEV(i) Getnamev(f, i)
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#define FIRST_INSTR() (GETUSTRINGVALUE(f->f_code->co_code))
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#define INSTR_OFFSET() (next_instr - FIRST_INSTR())
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#define NEXTOP() (*next_instr++)
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#define NEXTARG() (next_instr += 2, (next_instr[-1]<<8) + next_instr[-2])
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#define JUMPTO(x) (next_instr = FIRST_INSTR() + (x))
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#define JUMPBY(x) (next_instr += (x))
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/* Stack manipulation macros */
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#define STACK_LEVEL() (stack_pointer - f->f_valuestack)
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#define EMPTY() (STACK_LEVEL() == 0)
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#define TOP() (stack_pointer[-1])
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#define BASIC_PUSH(v) (*stack_pointer++ = (v))
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#define BASIC_POP() (*--stack_pointer)
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#define CHECK_STACK(n) (STACK_LEVEL() + (n) < f->f_nvalues || \
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(stack_pointer = extend_stack(f, STACK_LEVEL(), n)))
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#ifdef LLTRACE
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#define PUSH(v) (BASIC_PUSH(v), lltrace && prtrace(TOP(), "push"))
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#define POP() (lltrace && prtrace(TOP(), "pop"), BASIC_POP())
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#else
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#define PUSH(v) BASIC_PUSH(v)
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#define POP() BASIC_POP()
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#endif
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if (globals == NULL) {
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globals = getglobals();
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if (locals == NULL) {
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locals = getlocals();
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needmerge = 1;
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}
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}
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else {
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if (locals == NULL)
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locals = globals;
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}
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#ifdef LLTRACE
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lltrace = dictlookup(globals, "__lltrace__") != NULL;
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#endif
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f = newframeobject(
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current_frame, /*back*/
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co, /*code*/
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globals, /*globals*/
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locals, /*locals*/
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owner, /*owner*/
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50, /*nvalues*/
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20); /*nblocks*/
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if (f == NULL)
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return NULL;
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current_frame = f;
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if (sys_trace != NULL) {
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/* sys_trace, if defined, is a function that will
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be called on *every* entry to a code block.
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Its return value, if not None, is a function that
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will be called at the start of each executed line
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of code. (Actually, the function must return
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itself in order to continue tracing.)
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The trace functions are called with three arguments:
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a pointer to the current frame, a string indicating
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why the function is called, and an argument which
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depends on the situation. The global trace function
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(sys.trace) is also called whenever an exception
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is detected. */
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if (call_trace(&sys_trace, &trace, f, "call", arg)) {
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/* Trace function raised an error */
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current_frame = f->f_back;
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DECREF(f);
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return NULL;
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}
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}
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if (sys_profile != NULL) {
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/* Similar for sys_profile, except it needn't return
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itself and isn't called for "line" events */
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if (call_trace(&sys_profile, (object**)0, f, "call", arg)) {
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current_frame = f->f_back;
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DECREF(f);
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return NULL;
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}
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}
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next_instr = GETUSTRINGVALUE(f->f_code->co_code);
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stack_pointer = f->f_valuestack;
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if (arg != NULL) {
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INCREF(arg);
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PUSH(arg);
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}
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why = WHY_NOT;
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err = 0;
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x = None; /* Not a reference, just anything non-NULL */
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for (;;) {
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static int ticker;
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/* Do periodic things.
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Doing this every time through the loop would add
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too much overhead (a function call per instruction).
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So we do it only every tenth instruction. */
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if (--ticker < 0) {
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ticker = 10;
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if (intrcheck()) {
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err_set(KeyboardInterrupt);
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why = WHY_EXCEPTION;
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goto on_error;
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}
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#ifdef USE_THREAD
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if (interpreter_lock) {
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/* Give another thread a chance */
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current_frame = NULL;
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release_lock(interpreter_lock);
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/* Other threads may run now */
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acquire_lock(interpreter_lock, 1);
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current_frame = f;
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}
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#endif
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}
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/* Extract opcode and argument */
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#ifdef DEBUG
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f->f_lasti = INSTR_OFFSET();
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#endif
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opcode = NEXTOP();
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if (HAS_ARG(opcode))
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oparg = NEXTARG();
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#ifdef LLTRACE
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/* Instruction tracing */
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if (lltrace) {
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if (HAS_ARG(opcode)) {
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printf("%d: %d, %d\n",
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(int) (INSTR_OFFSET() - 3),
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opcode, oparg);
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}
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else {
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printf("%d: %d\n",
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(int) (INSTR_OFFSET() - 1), opcode);
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}
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}
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#endif
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if (!CHECK_STACK(3)) {
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x = NULL;
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break;
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}
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/* Main switch on opcode */
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switch (opcode) {
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/* BEWARE!
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It is essential that any operation that fails sets either
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x to NULL, err to nonzero, or why to anything but WHY_NOT,
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and that no operation that succeeds does this! */
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/* case STOP_CODE: this is an error! */
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case POP_TOP:
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v = POP();
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DECREF(v);
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break;
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case ROT_TWO:
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v = POP();
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w = POP();
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PUSH(v);
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PUSH(w);
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break;
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case ROT_THREE:
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v = POP();
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w = POP();
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x = POP();
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PUSH(v);
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PUSH(x);
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PUSH(w);
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break;
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case DUP_TOP:
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v = TOP();
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INCREF(v);
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PUSH(v);
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break;
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case UNARY_POSITIVE:
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v = POP();
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x = pos(v);
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DECREF(v);
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PUSH(x);
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break;
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case UNARY_NEGATIVE:
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v = POP();
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x = neg(v);
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DECREF(v);
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PUSH(x);
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break;
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case UNARY_NOT:
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v = POP();
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x = not(v);
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DECREF(v);
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PUSH(x);
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break;
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case UNARY_CONVERT:
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v = POP();
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x = reprobject(v);
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DECREF(v);
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PUSH(x);
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break;
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case UNARY_CALL:
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v = POP();
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f->f_lasti = INSTR_OFFSET() - 1; /* For tracing */
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x = call_object(v, (object *)NULL);
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DECREF(v);
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PUSH(x);
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break;
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case UNARY_INVERT:
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v = POP();
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x = invert(v);
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DECREF(v);
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PUSH(x);
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break;
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case BINARY_MULTIPLY:
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w = POP();
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v = POP();
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x = mul(v, w);
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DECREF(v);
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DECREF(w);
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|
PUSH(x);
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|
break;
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|
case BINARY_DIVIDE:
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w = POP();
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|
v = POP();
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x = divide(v, w);
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DECREF(v);
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DECREF(w);
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|
PUSH(x);
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|
break;
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|
case BINARY_MODULO:
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w = POP();
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|
v = POP();
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|
x = rem(v, w);
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|
DECREF(v);
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|
DECREF(w);
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|
PUSH(x);
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|
break;
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|
case BINARY_ADD:
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|
w = POP();
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|
v = POP();
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|
x = add(v, w);
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|
DECREF(v);
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|
DECREF(w);
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|
PUSH(x);
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|
break;
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|
case BINARY_SUBTRACT:
|
|
w = POP();
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|
v = POP();
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|
x = sub(v, w);
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|
DECREF(v);
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|
DECREF(w);
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|
PUSH(x);
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|
break;
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|
case BINARY_SUBSCR:
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|
w = POP();
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|
v = POP();
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|
x = apply_subscript(v, w);
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|
DECREF(v);
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|
DECREF(w);
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|
PUSH(x);
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|
break;
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|
case BINARY_CALL:
|
|
w = POP();
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|
v = POP();
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|
f->f_lasti = INSTR_OFFSET() - 1; /* For tracing */
|
|
x = call_object(v, w);
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|
DECREF(v);
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|
DECREF(w);
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|
PUSH(x);
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|
break;
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|
|
|
case BINARY_LSHIFT:
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|
w = POP();
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|
v = POP();
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|
x = lshift(v, w);
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|
DECREF(v);
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|
DECREF(w);
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|
PUSH(x);
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|
break;
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|
case BINARY_RSHIFT:
|
|
w = POP();
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|
v = POP();
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|
x = rshift(v, w);
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|
DECREF(v);
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|
DECREF(w);
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|
PUSH(x);
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|
break;
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|
case BINARY_AND:
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|
w = POP();
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|
v = POP();
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|
x = and(v, w);
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|
DECREF(v);
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|
DECREF(w);
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|
PUSH(x);
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|
break;
|
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|
case BINARY_XOR:
|
|
w = POP();
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|
v = POP();
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|
x = xor(v, w);
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|
DECREF(v);
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|
DECREF(w);
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|
PUSH(x);
|
|
break;
|
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|
case BINARY_OR:
|
|
w = POP();
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|
v = POP();
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|
x = or(v, w);
|
|
DECREF(v);
|
|
DECREF(w);
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|
PUSH(x);
|
|
break;
|
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|
|
case SLICE+0:
|
|
case SLICE+1:
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|
case SLICE+2:
|
|
case SLICE+3:
|
|
if ((opcode-SLICE) & 2)
|
|
w = POP();
|
|
else
|
|
w = NULL;
|
|
if ((opcode-SLICE) & 1)
|
|
v = POP();
|
|
else
|
|
v = NULL;
|
|
u = POP();
|
|
x = apply_slice(u, v, w);
|
|
DECREF(u);
|
|
XDECREF(v);
|
|
XDECREF(w);
|
|
PUSH(x);
|
|
break;
|
|
|
|
case STORE_SLICE+0:
|
|
case STORE_SLICE+1:
|
|
case STORE_SLICE+2:
|
|
case STORE_SLICE+3:
|
|
if ((opcode-STORE_SLICE) & 2)
|
|
w = POP();
|
|
else
|
|
w = NULL;
|
|
if ((opcode-STORE_SLICE) & 1)
|
|
v = POP();
|
|
else
|
|
v = NULL;
|
|
u = POP();
|
|
t = POP();
|
|
err = assign_slice(u, v, w, t); /* u[v:w] = t */
|
|
DECREF(t);
|
|
DECREF(u);
|
|
XDECREF(v);
|
|
XDECREF(w);
|
|
break;
|
|
|
|
case DELETE_SLICE+0:
|
|
case DELETE_SLICE+1:
|
|
case DELETE_SLICE+2:
|
|
case DELETE_SLICE+3:
|
|
if ((opcode-DELETE_SLICE) & 2)
|
|
w = POP();
|
|
else
|
|
w = NULL;
|
|
if ((opcode-DELETE_SLICE) & 1)
|
|
v = POP();
|
|
else
|
|
v = NULL;
|
|
u = POP();
|
|
err = assign_slice(u, v, w, (object *)NULL);
|
|
/* del u[v:w] */
|
|
DECREF(u);
|
|
XDECREF(v);
|
|
XDECREF(w);
|
|
break;
|
|
|
|
case STORE_SUBSCR:
|
|
w = POP();
|
|
v = POP();
|
|
u = POP();
|
|
/* v[w] = u */
|
|
err = assign_subscript(v, w, u);
|
|
DECREF(u);
|
|
DECREF(v);
|
|
DECREF(w);
|
|
break;
|
|
|
|
case DELETE_SUBSCR:
|
|
w = POP();
|
|
v = POP();
|
|
/* del v[w] */
|
|
err = assign_subscript(v, w, (object *)NULL);
|
|
DECREF(v);
|
|
DECREF(w);
|
|
break;
|
|
|
|
case PRINT_EXPR:
|
|
v = POP();
|
|
/* Print value except if procedure result */
|
|
if (v != None) {
|
|
flushline();
|
|
x = sysget("stdout");
|
|
softspace(x, 1);
|
|
err = writeobject(v, x, 0);
|
|
flushline();
|
|
if (killprint) {
|
|
err_setstr(RuntimeError,
|
|
"printing expression statement");
|
|
x = 0;
|
|
}
|
|
}
|
|
DECREF(v);
|
|
break;
|
|
|
|
case PRINT_ITEM:
|
|
v = POP();
|
|
w = sysget("stdout");
|
|
if (softspace(w, 1))
|
|
writestring(" ", w);
|
|
err = writeobject(v, w, PRINT_RAW);
|
|
if (err == 0 && is_stringobject(v)) {
|
|
/* XXX move into writeobject() ? */
|
|
char *s = getstringvalue(v);
|
|
int len = getstringsize(v);
|
|
if (len > 0 && isspace(s[len-1]) &&
|
|
s[len-1] != ' ')
|
|
softspace(w, 0);
|
|
}
|
|
DECREF(v);
|
|
break;
|
|
|
|
case PRINT_NEWLINE:
|
|
x = sysget("stdout");
|
|
if (x == NULL)
|
|
err_setstr(RuntimeError, "lost sys.stdout");
|
|
else {
|
|
writestring("\n", x);
|
|
softspace(x, 0);
|
|
}
|
|
break;
|
|
|
|
case BREAK_LOOP:
|
|
why = WHY_BREAK;
|
|
break;
|
|
|
|
case RAISE_EXCEPTION:
|
|
v = POP();
|
|
w = POP();
|
|
/* A tuple is equivalent to its first element here */
|
|
while (is_tupleobject(w)) {
|
|
u = w;
|
|
w = gettupleitem(u, 0);
|
|
DECREF(u);
|
|
}
|
|
if (!is_stringobject(w))
|
|
err_setstr(TypeError,
|
|
"exceptions must be strings");
|
|
else
|
|
err_setval(w, v);
|
|
DECREF(v);
|
|
DECREF(w);
|
|
why = WHY_EXCEPTION;
|
|
break;
|
|
|
|
case LOAD_LOCALS:
|
|
v = f->f_locals;
|
|
INCREF(v);
|
|
PUSH(v);
|
|
break;
|
|
|
|
case RETURN_VALUE:
|
|
retval = POP();
|
|
why = WHY_RETURN;
|
|
break;
|
|
|
|
case LOAD_GLOBALS:
|
|
v = f->f_locals;
|
|
INCREF(v);
|
|
PUSH(v);
|
|
break;
|
|
|
|
case EXEC_STMT:
|
|
w = POP();
|
|
v = POP();
|
|
u = POP();
|
|
err = exec_statement(u, v, w);
|
|
DECREF(u);
|
|
DECREF(v);
|
|
DECREF(w);
|
|
break;
|
|
|
|
case BUILD_FUNCTION:
|
|
v = POP();
|
|
x = newfuncobject(v, f->f_globals);
|
|
DECREF(v);
|
|
PUSH(x);
|
|
break;
|
|
|
|
case POP_BLOCK:
|
|
{
|
|
block *b = pop_block(f);
|
|
while (STACK_LEVEL() > b->b_level) {
|
|
v = POP();
|
|
DECREF(v);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case END_FINALLY:
|
|
v = POP();
|
|
if (is_intobject(v)) {
|
|
why = (enum why_code) getintvalue(v);
|
|
if (why == WHY_RETURN)
|
|
retval = POP();
|
|
}
|
|
else if (is_stringobject(v)) {
|
|
w = POP();
|
|
err_setval(v, w);
|
|
DECREF(w);
|
|
w = POP();
|
|
tb_store(w);
|
|
DECREF(w);
|
|
why = WHY_RERAISE;
|
|
}
|
|
else if (v != None) {
|
|
err_setstr(SystemError,
|
|
"'finally' pops bad exception");
|
|
why = WHY_EXCEPTION;
|
|
}
|
|
DECREF(v);
|
|
break;
|
|
|
|
case BUILD_CLASS:
|
|
u = POP();
|
|
v = POP();
|
|
w = POP();
|
|
x = build_class(u, v, w);
|
|
PUSH(x);
|
|
DECREF(u);
|
|
DECREF(v);
|
|
DECREF(w);
|
|
break;
|
|
|
|
case STORE_NAME:
|
|
w = GETNAMEV(oparg);
|
|
v = POP();
|
|
u = dict2lookup(f->f_locals, w);
|
|
if (u == NULL) {
|
|
if (defmode != 0) {
|
|
if (v != None)
|
|
u = (object *)v->ob_type;
|
|
else
|
|
u = NULL;
|
|
x = newaccessobject(v, f->f_locals,
|
|
(typeobject *)u,
|
|
defmode);
|
|
DECREF(v);
|
|
if (x == NULL)
|
|
break;
|
|
v = x;
|
|
}
|
|
}
|
|
else if (is_accessobject(u)) {
|
|
err = setaccessvalue(u, f->f_locals, v);
|
|
DECREF(v);
|
|
break;
|
|
}
|
|
err = dict2insert(f->f_locals, w, v);
|
|
DECREF(v);
|
|
break;
|
|
|
|
case DELETE_NAME:
|
|
w = GETNAMEV(oparg);
|
|
u = dict2lookup(f->f_locals, w);
|
|
if (u != NULL && is_accessobject(u)) {
|
|
err = setaccessvalue(u, f->f_locals,
|
|
(object *)NULL);
|
|
break;
|
|
}
|
|
if ((err = dict2remove(f->f_locals, w)) != 0)
|
|
err_setval(NameError, w);
|
|
break;
|
|
|
|
#ifdef CASE_TOO_BIG
|
|
default: switch (opcode) {
|
|
#endif
|
|
|
|
case UNPACK_VARARG:
|
|
if (EMPTY()) {
|
|
err_setstr(TypeError,
|
|
"no argument list");
|
|
why = WHY_EXCEPTION;
|
|
break;
|
|
}
|
|
v = POP();
|
|
if (!is_tupleobject(v)) {
|
|
err_setstr(TypeError,
|
|
"bad argument list");
|
|
why = WHY_EXCEPTION;
|
|
}
|
|
else if (gettuplesize(v) < oparg) {
|
|
err_setstr(TypeError,
|
|
"not enough arguments");
|
|
why = WHY_EXCEPTION;
|
|
}
|
|
else if (oparg == 0) {
|
|
PUSH(v);
|
|
break;
|
|
}
|
|
else {
|
|
x = gettupleslice(v, oparg, gettuplesize(v));
|
|
if (x != NULL) {
|
|
PUSH(x);
|
|
if (!CHECK_STACK(oparg)) {
|
|
x = NULL;
|
|
break;
|
|
}
|
|
for (; --oparg >= 0; ) {
|
|
w = gettupleitem(v, oparg);
|
|
INCREF(w);
|
|
PUSH(w);
|
|
}
|
|
}
|
|
}
|
|
DECREF(v);
|
|
break;
|
|
|
|
case UNPACK_ARG:
|
|
{
|
|
int n;
|
|
if (EMPTY()) {
|
|
err_setstr(TypeError,
|
|
"no argument list");
|
|
why = WHY_EXCEPTION;
|
|
break;
|
|
}
|
|
v = POP();
|
|
if (!is_tupleobject(v)) {
|
|
err_setstr(TypeError,
|
|
"bad argument list");
|
|
why = WHY_EXCEPTION;
|
|
break;
|
|
}
|
|
n = gettuplesize(v);
|
|
#ifdef COMPAT_HACKS
|
|
/* Implement various compatibility hacks (for 0.9.4 or earlier):
|
|
(a) f(a,b,...) accepts f((1,2,...))
|
|
(b) f((a,b,...)) accepts f(1,2,...)
|
|
(c) f(self,(a,b,...)) accepts f(x,1,2,...)
|
|
*/
|
|
if (n == 1 && oparg != 1) {
|
|
/* Rule (a) */
|
|
w = gettupleitem(v, 0);
|
|
if (is_tupleobject(w)) {
|
|
INCREF(w);
|
|
DECREF(v);
|
|
v = w;
|
|
n = gettuplesize(v);
|
|
}
|
|
}
|
|
else if (n != 1 && oparg == 1) {
|
|
/* Rule (b) */
|
|
PUSH(v);
|
|
break;
|
|
/* Don't fall through */
|
|
}
|
|
else if (n > 2 && oparg == 2) {
|
|
/* Rule (c) */
|
|
int i;
|
|
w = newtupleobject(n-1);
|
|
u = newtupleobject(2);
|
|
if (u == NULL || w == NULL) {
|
|
XDECREF(w);
|
|
XDECREF(u);
|
|
DECREF(v);
|
|
why = WHY_EXCEPTION;
|
|
break;
|
|
}
|
|
t = gettupleitem(v, 0);
|
|
INCREF(t);
|
|
settupleitem(u, 0, t);
|
|
for (i = 1; i < n; i++) {
|
|
t = gettupleitem(v, i);
|
|
INCREF(t);
|
|
settupleitem(w, i-1, t);
|
|
}
|
|
settupleitem(u, 1, w);
|
|
DECREF(v);
|
|
v = u;
|
|
n = 2;
|
|
}
|
|
#endif /* Disabled compatibility hacks */
|
|
if (n != oparg) {
|
|
err_setstr(TypeError,
|
|
"arg count mismatch");
|
|
why = WHY_EXCEPTION;
|
|
DECREF(v);
|
|
break;
|
|
}
|
|
PUSH(v);
|
|
}
|
|
/* Fall through */
|
|
case UNPACK_TUPLE:
|
|
v = POP();
|
|
if (!is_tupleobject(v)) {
|
|
err_setstr(TypeError, "unpack non-tuple");
|
|
why = WHY_EXCEPTION;
|
|
}
|
|
else if (gettuplesize(v) != oparg) {
|
|
err_setstr(ValueError,
|
|
"unpack tuple of wrong size");
|
|
why = WHY_EXCEPTION;
|
|
}
|
|
else {
|
|
if (!CHECK_STACK(oparg)) {
|
|
x = NULL;
|
|
break;
|
|
}
|
|
for (; --oparg >= 0; ) {
|
|
w = gettupleitem(v, oparg);
|
|
INCREF(w);
|
|
PUSH(w);
|
|
}
|
|
}
|
|
DECREF(v);
|
|
break;
|
|
|
|
case UNPACK_LIST:
|
|
v = POP();
|
|
if (!is_listobject(v)) {
|
|
err_setstr(TypeError, "unpack non-list");
|
|
why = WHY_EXCEPTION;
|
|
}
|
|
else if (getlistsize(v) != oparg) {
|
|
err_setstr(ValueError,
|
|
"unpack list of wrong size");
|
|
why = WHY_EXCEPTION;
|
|
}
|
|
else {
|
|
if (!CHECK_STACK(oparg)) {
|
|
x = NULL;
|
|
break;
|
|
}
|
|
for (; --oparg >= 0; ) {
|
|
w = getlistitem(v, oparg);
|
|
INCREF(w);
|
|
PUSH(w);
|
|
}
|
|
}
|
|
DECREF(v);
|
|
break;
|
|
|
|
case STORE_ATTR:
|
|
w = GETNAMEV(oparg);
|
|
v = POP();
|
|
u = POP();
|
|
err = setattro(v, w, u); /* v.w = u */
|
|
DECREF(v);
|
|
DECREF(u);
|
|
break;
|
|
|
|
case DELETE_ATTR:
|
|
w = GETNAMEV(oparg);
|
|
v = POP();
|
|
err = setattro(v, w, (object *)NULL); /* del v.w */
|
|
DECREF(v);
|
|
break;
|
|
|
|
case STORE_GLOBAL:
|
|
w = GETNAMEV(oparg);
|
|
v = POP();
|
|
u = dict2lookup(f->f_locals, w);
|
|
if (u != NULL && is_accessobject(u)) {
|
|
err = setaccessvalue(u, f->f_globals, v);
|
|
DECREF(v);
|
|
break;
|
|
}
|
|
err = dict2insert(f->f_globals, w, v);
|
|
DECREF(v);
|
|
break;
|
|
|
|
case DELETE_GLOBAL:
|
|
w = GETNAMEV(oparg);
|
|
u = dict2lookup(f->f_locals, w);
|
|
if (u != NULL && is_accessobject(u)) {
|
|
err = setaccessvalue(u, f->f_globals,
|
|
(object *)NULL);
|
|
break;
|
|
}
|
|
if ((err = dict2remove(f->f_globals, w)) != 0)
|
|
err_setval(NameError, w);
|
|
break;
|
|
|
|
case LOAD_CONST:
|
|
x = GETCONST(oparg);
|
|
INCREF(x);
|
|
PUSH(x);
|
|
break;
|
|
|
|
case LOAD_NAME:
|
|
w = GETNAMEV(oparg);
|
|
x = dict2lookup(f->f_locals, w);
|
|
if (x == NULL) {
|
|
err_clear();
|
|
x = dict2lookup(f->f_globals, w);
|
|
if (x == NULL) {
|
|
err_clear();
|
|
x = getbuiltin(w);
|
|
if (x == NULL) {
|
|
err_setval(NameError, w);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (is_accessobject(x)) {
|
|
x = getaccessvalue(x, f->f_globals /* XXX */);
|
|
if (x == NULL)
|
|
break;
|
|
}
|
|
else
|
|
INCREF(x);
|
|
PUSH(x);
|
|
break;
|
|
|
|
case LOAD_GLOBAL:
|
|
w = GETNAMEV(oparg);
|
|
x = dict2lookup(f->f_globals, w);
|
|
if (x == NULL) {
|
|
err_clear();
|
|
x = getbuiltin(w);
|
|
if (x == NULL) {
|
|
err_setval(NameError, w);
|
|
break;
|
|
}
|
|
}
|
|
if (is_accessobject(x)) {
|
|
x = getaccessvalue(x, f->f_globals);
|
|
if (x == NULL)
|
|
break;
|
|
}
|
|
else
|
|
INCREF(x);
|
|
PUSH(x);
|
|
break;
|
|
|
|
case LOAD_LOCAL:
|
|
w = GETNAMEV(oparg);
|
|
x = dict2lookup(f->f_locals, w);
|
|
if (x == NULL) {
|
|
err_setval(NameError, w);
|
|
break;
|
|
}
|
|
if (is_accessobject(x)) {
|
|
x = getaccessvalue(x, f->f_locals);
|
|
if (x == NULL)
|
|
break;
|
|
}
|
|
else
|
|
INCREF(x);
|
|
PUSH(x);
|
|
break;
|
|
|
|
case RESERVE_FAST:
|
|
x = GETCONST(oparg);
|
|
if (x == None)
|
|
break;
|
|
if (x == NULL || !is_dictobject(x)) {
|
|
fatal("bad RESERVE_FAST");
|
|
err_setstr(SystemError, "bad RESERVE_FAST");
|
|
x = NULL;
|
|
break;
|
|
}
|
|
XDECREF(f->f_fastlocals);
|
|
XDECREF(f->f_localmap);
|
|
INCREF(x);
|
|
f->f_localmap = x;
|
|
f->f_fastlocals = x = newlistobject(
|
|
x->ob_type->tp_as_mapping->mp_length(x));
|
|
fastlocals = (listobject *) x;
|
|
break;
|
|
|
|
case LOAD_FAST:
|
|
x = GETLISTITEM(fastlocals, oparg);
|
|
if (x == NULL) {
|
|
err_setstr(NameError,
|
|
"undefined local variable");
|
|
break;
|
|
}
|
|
if (is_accessobject(x)) {
|
|
x = getaccessvalue(x, f->f_locals);
|
|
if (x == NULL)
|
|
break;
|
|
}
|
|
else
|
|
INCREF(x);
|
|
PUSH(x);
|
|
break;
|
|
|
|
case STORE_FAST:
|
|
v = POP();
|
|
w = GETLISTITEM(fastlocals, oparg);
|
|
if (w != NULL && is_accessobject(w)) {
|
|
err = setaccessvalue(w, f->f_locals, v);
|
|
DECREF(v);
|
|
break;
|
|
}
|
|
XDECREF(w);
|
|
GETLISTITEM(fastlocals, oparg) = v;
|
|
break;
|
|
|
|
case DELETE_FAST:
|
|
x = GETLISTITEM(fastlocals, oparg);
|
|
if (x == NULL) {
|
|
err_setstr(NameError,
|
|
"undefined local variable");
|
|
break;
|
|
}
|
|
if (w != NULL && is_accessobject(w)) {
|
|
err = setaccessvalue(w, f->f_locals,
|
|
(object *)NULL);
|
|
break;
|
|
}
|
|
DECREF(x);
|
|
GETLISTITEM(fastlocals, oparg) = NULL;
|
|
break;
|
|
|
|
case BUILD_TUPLE:
|
|
x = newtupleobject(oparg);
|
|
if (x != NULL) {
|
|
for (; --oparg >= 0;) {
|
|
w = POP();
|
|
err = settupleitem(x, oparg, w);
|
|
if (err != 0)
|
|
break;
|
|
}
|
|
PUSH(x);
|
|
}
|
|
break;
|
|
|
|
case BUILD_LIST:
|
|
x = newlistobject(oparg);
|
|
if (x != NULL) {
|
|
for (; --oparg >= 0;) {
|
|
w = POP();
|
|
err = setlistitem(x, oparg, w);
|
|
if (err != 0)
|
|
break;
|
|
}
|
|
PUSH(x);
|
|
}
|
|
break;
|
|
|
|
case BUILD_MAP:
|
|
x = newdictobject();
|
|
PUSH(x);
|
|
break;
|
|
|
|
case LOAD_ATTR:
|
|
w = GETNAMEV(oparg);
|
|
v = POP();
|
|
x = getattro(v, w);
|
|
DECREF(v);
|
|
PUSH(x);
|
|
break;
|
|
|
|
case COMPARE_OP:
|
|
w = POP();
|
|
v = POP();
|
|
x = cmp_outcome(oparg, v, w);
|
|
DECREF(v);
|
|
DECREF(w);
|
|
PUSH(x);
|
|
break;
|
|
|
|
case IMPORT_NAME:
|
|
name = GETNAME(oparg);
|
|
x = import_module(name);
|
|
XINCREF(x);
|
|
PUSH(x);
|
|
break;
|
|
|
|
case IMPORT_FROM:
|
|
w = GETNAMEV(oparg);
|
|
v = TOP();
|
|
err = import_from(f->f_locals, v, w);
|
|
locals_2_fast(f, 0);
|
|
break;
|
|
|
|
case ACCESS_MODE:
|
|
v = POP();
|
|
w = GETNAMEV(oparg);
|
|
if (getstringvalue(w)[0] == '*')
|
|
defmode = getintvalue(v);
|
|
else
|
|
err = access_statement(w, v, f);
|
|
DECREF(v);
|
|
break;
|
|
|
|
case JUMP_FORWARD:
|
|
JUMPBY(oparg);
|
|
break;
|
|
|
|
case JUMP_IF_FALSE:
|
|
err = testbool(TOP());
|
|
if (err > 0)
|
|
err = 0;
|
|
else if (err == 0)
|
|
JUMPBY(oparg);
|
|
break;
|
|
|
|
case JUMP_IF_TRUE:
|
|
err = testbool(TOP());
|
|
if (err > 0) {
|
|
err = 0;
|
|
JUMPBY(oparg);
|
|
}
|
|
break;
|
|
|
|
case JUMP_ABSOLUTE:
|
|
JUMPTO(oparg);
|
|
break;
|
|
|
|
case FOR_LOOP:
|
|
/* for v in s: ...
|
|
On entry: stack contains s, i.
|
|
On exit: stack contains s, i+1, s[i];
|
|
but if loop exhausted:
|
|
s, i are popped, and we jump */
|
|
w = POP(); /* Loop index */
|
|
v = POP(); /* Sequence object */
|
|
u = loop_subscript(v, w);
|
|
if (u != NULL) {
|
|
PUSH(v);
|
|
x = newintobject(getintvalue(w)+1);
|
|
PUSH(x);
|
|
DECREF(w);
|
|
PUSH(u);
|
|
}
|
|
else {
|
|
DECREF(v);
|
|
DECREF(w);
|
|
/* A NULL can mean "s exhausted"
|
|
but also an error: */
|
|
if (err_occurred())
|
|
why = WHY_EXCEPTION;
|
|
else
|
|
JUMPBY(oparg);
|
|
}
|
|
break;
|
|
|
|
case SETUP_LOOP:
|
|
case SETUP_EXCEPT:
|
|
case SETUP_FINALLY:
|
|
setup_block(f, opcode, INSTR_OFFSET() + oparg,
|
|
STACK_LEVEL());
|
|
break;
|
|
|
|
case SET_LINENO:
|
|
#ifdef LLTRACE
|
|
if (lltrace)
|
|
printf("--- Line %d ---\n", oparg);
|
|
#endif
|
|
f->f_lineno = oparg;
|
|
if (trace != NULL) {
|
|
/* Trace each line of code reached */
|
|
f->f_lasti = INSTR_OFFSET();
|
|
err = call_trace(&trace, &trace,
|
|
f, "line", None);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
fprintf(stderr,
|
|
"XXX lineno: %d, opcode: %d\n",
|
|
f->f_lineno, opcode);
|
|
err_setstr(SystemError, "eval_code: unknown opcode");
|
|
why = WHY_EXCEPTION;
|
|
break;
|
|
|
|
#ifdef CASE_TOO_BIG
|
|
}
|
|
#endif
|
|
|
|
} /* switch */
|
|
|
|
on_error:
|
|
|
|
/* Quickly continue if no error occurred */
|
|
|
|
if (why == WHY_NOT) {
|
|
if (err == 0 && x != NULL)
|
|
continue; /* Normal, fast path */
|
|
why = WHY_EXCEPTION;
|
|
x = None;
|
|
err = 0;
|
|
}
|
|
|
|
#ifdef CHECKEXC
|
|
/* Double-check exception status */
|
|
|
|
if (why == WHY_EXCEPTION || why == WHY_RERAISE) {
|
|
if (!err_occurred()) {
|
|
fprintf(stderr, "XXX ghost error\n");
|
|
err_setstr(SystemError, "ghost error");
|
|
why = WHY_EXCEPTION;
|
|
}
|
|
}
|
|
else {
|
|
if (err_occurred()) {
|
|
fprintf(stderr, "XXX undetected error\n");
|
|
abort();
|
|
/* NOTREACHED */
|
|
why = WHY_EXCEPTION;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/* Log traceback info if this is a real exception */
|
|
|
|
if (why == WHY_EXCEPTION) {
|
|
f->f_lasti = INSTR_OFFSET() - 1;
|
|
if (HAS_ARG(opcode))
|
|
f->f_lasti -= 2;
|
|
tb_here(f);
|
|
|
|
if (trace)
|
|
call_exc_trace(&trace, &trace, f);
|
|
if (sys_profile)
|
|
call_exc_trace(&sys_profile, (object**)0, f);
|
|
}
|
|
|
|
/* For the rest, treat WHY_RERAISE as WHY_EXCEPTION */
|
|
|
|
if (why == WHY_RERAISE)
|
|
why = WHY_EXCEPTION;
|
|
|
|
/* Unwind stacks if a (pseudo) exception occurred */
|
|
|
|
while (why != WHY_NOT && f->f_iblock > 0) {
|
|
block *b = pop_block(f);
|
|
while (STACK_LEVEL() > b->b_level) {
|
|
v = POP();
|
|
XDECREF(v);
|
|
}
|
|
if (b->b_type == SETUP_LOOP && why == WHY_BREAK) {
|
|
why = WHY_NOT;
|
|
JUMPTO(b->b_handler);
|
|
break;
|
|
}
|
|
if (b->b_type == SETUP_FINALLY ||
|
|
b->b_type == SETUP_EXCEPT &&
|
|
why == WHY_EXCEPTION) {
|
|
if (why == WHY_EXCEPTION) {
|
|
object *exc, *val;
|
|
err_get(&exc, &val);
|
|
if (val == NULL) {
|
|
val = None;
|
|
INCREF(val);
|
|
}
|
|
v = tb_fetch();
|
|
/* Make the raw exception data
|
|
available to the handler,
|
|
so a program can emulate the
|
|
Python main loop. Don't do
|
|
this for 'finally'. */
|
|
if (b->b_type == SETUP_EXCEPT) {
|
|
sysset("exc_traceback", v);
|
|
sysset("exc_value", val);
|
|
sysset("exc_type", exc);
|
|
}
|
|
PUSH(v);
|
|
PUSH(val);
|
|
PUSH(exc);
|
|
}
|
|
else {
|
|
if (why == WHY_RETURN)
|
|
PUSH(retval);
|
|
v = newintobject((long)why);
|
|
PUSH(v);
|
|
}
|
|
why = WHY_NOT;
|
|
JUMPTO(b->b_handler);
|
|
break;
|
|
}
|
|
} /* unwind stack */
|
|
|
|
/* End the loop if we still have an error (or return) */
|
|
|
|
if (why != WHY_NOT)
|
|
break;
|
|
|
|
} /* main loop */
|
|
|
|
/* Pop remaining stack entries */
|
|
|
|
while (!EMPTY()) {
|
|
v = POP();
|
|
XDECREF(v);
|
|
}
|
|
|
|
if (why != WHY_RETURN)
|
|
retval = NULL;
|
|
|
|
if (trace) {
|
|
if (why == WHY_RETURN) {
|
|
if (call_trace(&trace, &trace, f, "return", retval)) {
|
|
XDECREF(retval);
|
|
retval = NULL;
|
|
why = WHY_EXCEPTION;
|
|
}
|
|
}
|
|
XDECREF(trace);
|
|
}
|
|
|
|
if (sys_profile && why == WHY_RETURN) {
|
|
if (call_trace(&sys_profile, (object**)0,
|
|
f, "return", retval)) {
|
|
XDECREF(retval);
|
|
retval = NULL;
|
|
why = WHY_EXCEPTION;
|
|
}
|
|
}
|
|
|
|
if (fastlocals && (f->ob_refcnt > 1 || f->f_locals->ob_refcnt > 2))
|
|
fast_2_locals(f);
|
|
|
|
/* Restore previous frame and release the current one */
|
|
|
|
current_frame = f->f_back;
|
|
DECREF(f);
|
|
|
|
if (needmerge)
|
|
locals_2_fast(current_frame, 1);
|
|
|
|
return retval;
|
|
}
|
|
|
|
#ifdef LLTRACE
|
|
static int
|
|
prtrace(v, str)
|
|
object *v;
|
|
char *str;
|
|
{
|
|
printf("%s ", str);
|
|
if (printobject(v, stdout, 0) != 0)
|
|
err_clear(); /* Don't know what else to do */
|
|
printf("\n");
|
|
}
|
|
#endif
|
|
|
|
static void
|
|
call_exc_trace(p_trace, p_newtrace, f)
|
|
object **p_trace, **p_newtrace;
|
|
frameobject *f;
|
|
{
|
|
object *type, *value, *traceback, *arg;
|
|
int err;
|
|
err_get(&type, &value);
|
|
if (value == NULL) {
|
|
value = None;
|
|
INCREF(value);
|
|
}
|
|
traceback = tb_fetch();
|
|
arg = newtupleobject(3);
|
|
if (arg == NULL)
|
|
goto cleanup;
|
|
settupleitem(arg, 0, type);
|
|
settupleitem(arg, 1, value);
|
|
settupleitem(arg, 2, traceback);
|
|
err = call_trace(p_trace, p_newtrace, f, "exception", arg);
|
|
if (!err) {
|
|
cleanup:
|
|
/* Restore original exception */
|
|
err_setval(type, value);
|
|
tb_store(traceback);
|
|
}
|
|
XDECREF(arg);
|
|
}
|
|
|
|
static int
|
|
call_trace(p_trace, p_newtrace, f, msg, arg)
|
|
object **p_trace; /* in/out; may not be NULL;
|
|
may not point to NULL variable initially */
|
|
object **p_newtrace; /* in/out; may be NULL;
|
|
may point to NULL variable;
|
|
may be same variable as p_newtrace */
|
|
frameobject *f;
|
|
char *msg;
|
|
object *arg;
|
|
{
|
|
object *arglist, *what;
|
|
object *res = NULL;
|
|
static int tracing = 0;
|
|
|
|
if (tracing) {
|
|
/* Don't do recursive traces */
|
|
if (p_newtrace) {
|
|
XDECREF(*p_newtrace);
|
|
*p_newtrace = NULL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
arglist = newtupleobject(3);
|
|
if (arglist == NULL)
|
|
goto cleanup;
|
|
what = newstringobject(msg);
|
|
if (what == NULL)
|
|
goto cleanup;
|
|
INCREF(f);
|
|
settupleitem(arglist, 0, (object *)f);
|
|
settupleitem(arglist, 1, what);
|
|
if (arg == NULL)
|
|
arg = None;
|
|
INCREF(arg);
|
|
settupleitem(arglist, 2, arg);
|
|
tracing++;
|
|
fast_2_locals(f);
|
|
res = call_object(*p_trace, arglist);
|
|
locals_2_fast(f, 1);
|
|
tracing--;
|
|
cleanup:
|
|
XDECREF(arglist);
|
|
if (res == NULL) {
|
|
/* The trace proc raised an exception */
|
|
tb_here(f);
|
|
DECREF(*p_trace);
|
|
*p_trace = NULL;
|
|
if (p_newtrace) {
|
|
XDECREF(*p_newtrace);
|
|
*p_newtrace = NULL;
|
|
}
|
|
return -1;
|
|
}
|
|
else {
|
|
if (p_newtrace) {
|
|
XDECREF(*p_newtrace);
|
|
if (res == None)
|
|
*p_newtrace = NULL;
|
|
else {
|
|
INCREF(res);
|
|
*p_newtrace = res;
|
|
}
|
|
}
|
|
DECREF(res);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static void
|
|
fast_2_locals(f)
|
|
frameobject *f;
|
|
{
|
|
/* Merge f->f_fastlocals into f->f_locals */
|
|
object *locals, *fast, *map;
|
|
object *error_type, *error_value;
|
|
int pos;
|
|
object *key, *value;
|
|
if (f == NULL)
|
|
return;
|
|
locals = f->f_locals;
|
|
fast = f->f_fastlocals;
|
|
map = f->f_localmap;
|
|
if (locals == NULL || fast == NULL || map == NULL)
|
|
return;
|
|
if (!is_dictobject(locals) || !is_listobject(fast) ||
|
|
!is_dictobject(map))
|
|
return;
|
|
err_get(&error_type, &error_value);
|
|
pos = 0;
|
|
while (mappinggetnext(map, &pos, &key, &value)) {
|
|
int j;
|
|
if (!is_intobject(value))
|
|
continue;
|
|
j = getintvalue(value);
|
|
value = getlistitem(fast, j);
|
|
if (value == NULL) {
|
|
err_clear();
|
|
if (dict2remove(locals, key) != 0)
|
|
err_clear();
|
|
}
|
|
else {
|
|
if (dict2insert(locals, key, value) != 0)
|
|
err_clear();
|
|
}
|
|
}
|
|
err_setval(error_type, error_value);
|
|
}
|
|
|
|
static void
|
|
locals_2_fast(f, clear)
|
|
frameobject *f;
|
|
int clear;
|
|
{
|
|
/* Merge f->f_locals into f->f_fastlocals */
|
|
object *locals, *fast, *map;
|
|
object *error_type, *error_value;
|
|
int pos;
|
|
object *key, *value;
|
|
if (f == NULL)
|
|
return;
|
|
locals = f->f_locals;
|
|
fast = f->f_fastlocals;
|
|
map = f->f_localmap;
|
|
if (locals == NULL || fast == NULL || map == NULL)
|
|
return;
|
|
if (!is_dictobject(locals) || !is_listobject(fast) ||
|
|
!is_dictobject(map))
|
|
return;
|
|
err_get(&error_type, &error_value);
|
|
pos = 0;
|
|
while (mappinggetnext(map, &pos, &key, &value)) {
|
|
int j;
|
|
if (!is_intobject(value))
|
|
continue;
|
|
j = getintvalue(value);
|
|
value = dict2lookup(locals, key);
|
|
if (value == NULL)
|
|
err_clear();
|
|
else
|
|
INCREF(value);
|
|
if (value != NULL || clear)
|
|
if (setlistitem(fast, j, value) != 0)
|
|
err_clear();
|
|
}
|
|
err_setval(error_type, error_value);
|
|
}
|
|
|
|
static void
|
|
mergelocals()
|
|
{
|
|
locals_2_fast(current_frame, 1);
|
|
}
|
|
|
|
object *
|
|
getlocals()
|
|
{
|
|
if (current_frame == NULL)
|
|
return NULL;
|
|
fast_2_locals(current_frame);
|
|
return current_frame->f_locals;
|
|
}
|
|
|
|
object *
|
|
getglobals()
|
|
{
|
|
if (current_frame == NULL)
|
|
return NULL;
|
|
else
|
|
return current_frame->f_globals;
|
|
}
|
|
|
|
object *
|
|
getowner()
|
|
{
|
|
if (current_frame == NULL)
|
|
return NULL;
|
|
else
|
|
return current_frame->f_owner;
|
|
}
|
|
|
|
void
|
|
printtraceback(f)
|
|
object *f;
|
|
{
|
|
object *v = tb_fetch();
|
|
if (v != NULL) {
|
|
tb_print(v, f);
|
|
DECREF(v);
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
flushline()
|
|
{
|
|
object *f = sysget("stdout");
|
|
if (softspace(f, 0))
|
|
writestring("\n", f);
|
|
}
|
|
|
|
|
|
static object *
|
|
or(v, w)
|
|
object *v, *w;
|
|
{
|
|
if (v->ob_type->tp_as_number != NULL) {
|
|
object *x;
|
|
object * (*f) FPROTO((object *, object *));
|
|
if (coerce(&v, &w) != 0)
|
|
return NULL;
|
|
if ((f = v->ob_type->tp_as_number->nb_or) != NULL)
|
|
x = (*f)(v, w);
|
|
DECREF(v);
|
|
DECREF(w);
|
|
if (f != NULL)
|
|
return x;
|
|
}
|
|
err_setstr(TypeError, "bad operand type(s) for |");
|
|
return NULL;
|
|
}
|
|
|
|
static object *
|
|
xor(v, w)
|
|
object *v, *w;
|
|
{
|
|
if (v->ob_type->tp_as_number != NULL) {
|
|
object *x;
|
|
object * (*f) FPROTO((object *, object *));
|
|
if (coerce(&v, &w) != 0)
|
|
return NULL;
|
|
if ((f = v->ob_type->tp_as_number->nb_xor) != NULL)
|
|
x = (*f)(v, w);
|
|
DECREF(v);
|
|
DECREF(w);
|
|
if (f != NULL)
|
|
return x;
|
|
}
|
|
err_setstr(TypeError, "bad operand type(s) for ^");
|
|
return NULL;
|
|
}
|
|
|
|
static object *
|
|
and(v, w)
|
|
object *v, *w;
|
|
{
|
|
if (v->ob_type->tp_as_number != NULL) {
|
|
object *x;
|
|
object * (*f) FPROTO((object *, object *));
|
|
if (coerce(&v, &w) != 0)
|
|
return NULL;
|
|
if ((f = v->ob_type->tp_as_number->nb_and) != NULL)
|
|
x = (*f)(v, w);
|
|
DECREF(v);
|
|
DECREF(w);
|
|
if (f != NULL)
|
|
return x;
|
|
}
|
|
err_setstr(TypeError, "bad operand type(s) for &");
|
|
return NULL;
|
|
}
|
|
|
|
static object *
|
|
lshift(v, w)
|
|
object *v, *w;
|
|
{
|
|
if (v->ob_type->tp_as_number != NULL) {
|
|
object *x;
|
|
object * (*f) FPROTO((object *, object *));
|
|
if (coerce(&v, &w) != 0)
|
|
return NULL;
|
|
if ((f = v->ob_type->tp_as_number->nb_lshift) != NULL)
|
|
x = (*f)(v, w);
|
|
DECREF(v);
|
|
DECREF(w);
|
|
if (f != NULL)
|
|
return x;
|
|
}
|
|
err_setstr(TypeError, "bad operand type(s) for <<");
|
|
return NULL;
|
|
}
|
|
|
|
static object *
|
|
rshift(v, w)
|
|
object *v, *w;
|
|
{
|
|
if (v->ob_type->tp_as_number != NULL) {
|
|
object *x;
|
|
object * (*f) FPROTO((object *, object *));
|
|
if (coerce(&v, &w) != 0)
|
|
return NULL;
|
|
if ((f = v->ob_type->tp_as_number->nb_rshift) != NULL)
|
|
x = (*f)(v, w);
|
|
DECREF(v);
|
|
DECREF(w);
|
|
if (f != NULL)
|
|
return x;
|
|
}
|
|
err_setstr(TypeError, "bad operand type(s) for >>");
|
|
return NULL;
|
|
}
|
|
|
|
static object *
|
|
add(v, w)
|
|
object *v, *w;
|
|
{
|
|
if (v->ob_type->tp_as_sequence != NULL)
|
|
return (*v->ob_type->tp_as_sequence->sq_concat)(v, w);
|
|
else if (v->ob_type->tp_as_number != NULL) {
|
|
object *x;
|
|
if (coerce(&v, &w) != 0)
|
|
return NULL;
|
|
x = (*v->ob_type->tp_as_number->nb_add)(v, w);
|
|
DECREF(v);
|
|
DECREF(w);
|
|
return x;
|
|
}
|
|
err_setstr(TypeError, "bad operand type(s) for +");
|
|
return NULL;
|
|
}
|
|
|
|
static object *
|
|
sub(v, w)
|
|
object *v, *w;
|
|
{
|
|
if (v->ob_type->tp_as_number != NULL) {
|
|
object *x;
|
|
if (coerce(&v, &w) != 0)
|
|
return NULL;
|
|
x = (*v->ob_type->tp_as_number->nb_subtract)(v, w);
|
|
DECREF(v);
|
|
DECREF(w);
|
|
return x;
|
|
}
|
|
err_setstr(TypeError, "bad operand type(s) for -");
|
|
return NULL;
|
|
}
|
|
|
|
static object *
|
|
mul(v, w)
|
|
object *v, *w;
|
|
{
|
|
typeobject *tp;
|
|
tp = v->ob_type;
|
|
if (tp->tp_as_number != NULL &&
|
|
w->ob_type->tp_as_sequence != NULL &&
|
|
!is_instanceobject(v)) {
|
|
/* number*sequence -- swap v and w */
|
|
object *tmp = v;
|
|
v = w;
|
|
w = tmp;
|
|
tp = v->ob_type;
|
|
}
|
|
if (tp->tp_as_number != NULL) {
|
|
object *x;
|
|
if (is_instanceobject(v)) {
|
|
/* Instances of user-defined classes get their
|
|
other argument uncoerced, so they may
|
|
implement sequence*number as well as
|
|
number*number. */
|
|
INCREF(v);
|
|
INCREF(w);
|
|
}
|
|
else if (coerce(&v, &w) != 0)
|
|
return NULL;
|
|
x = (*v->ob_type->tp_as_number->nb_multiply)(v, w);
|
|
DECREF(v);
|
|
DECREF(w);
|
|
return x;
|
|
}
|
|
if (tp->tp_as_sequence != NULL) {
|
|
if (!is_intobject(w)) {
|
|
err_setstr(TypeError,
|
|
"can't multiply sequence with non-int");
|
|
return NULL;
|
|
}
|
|
return (*tp->tp_as_sequence->sq_repeat)
|
|
(v, (int)getintvalue(w));
|
|
}
|
|
err_setstr(TypeError, "bad operand type(s) for *");
|
|
return NULL;
|
|
}
|
|
|
|
static object *
|
|
divide(v, w)
|
|
object *v, *w;
|
|
{
|
|
if (v->ob_type->tp_as_number != NULL) {
|
|
object *x;
|
|
if (coerce(&v, &w) != 0)
|
|
return NULL;
|
|
x = (*v->ob_type->tp_as_number->nb_divide)(v, w);
|
|
DECREF(v);
|
|
DECREF(w);
|
|
return x;
|
|
}
|
|
err_setstr(TypeError, "bad operand type(s) for /");
|
|
return NULL;
|
|
}
|
|
|
|
static object *
|
|
rem(v, w)
|
|
object *v, *w;
|
|
{
|
|
if (v->ob_type->tp_as_number != NULL) {
|
|
object *x;
|
|
if (coerce(&v, &w) != 0)
|
|
return NULL;
|
|
x = (*v->ob_type->tp_as_number->nb_remainder)(v, w);
|
|
DECREF(v);
|
|
DECREF(w);
|
|
return x;
|
|
}
|
|
if (is_stringobject(v)) {
|
|
return formatstring(v, w);
|
|
}
|
|
err_setstr(TypeError, "bad operand type(s) for %");
|
|
return NULL;
|
|
}
|
|
|
|
static object *
|
|
neg(v)
|
|
object *v;
|
|
{
|
|
if (v->ob_type->tp_as_number != NULL)
|
|
return (*v->ob_type->tp_as_number->nb_negative)(v);
|
|
err_setstr(TypeError, "bad operand type(s) for unary -");
|
|
return NULL;
|
|
}
|
|
|
|
static object *
|
|
pos(v)
|
|
object *v;
|
|
{
|
|
if (v->ob_type->tp_as_number != NULL)
|
|
return (*v->ob_type->tp_as_number->nb_positive)(v);
|
|
err_setstr(TypeError, "bad operand type(s) for unary +");
|
|
return NULL;
|
|
}
|
|
|
|
static object *
|
|
invert(v)
|
|
object *v;
|
|
{
|
|
object * (*f) FPROTO((object *));
|
|
if (v->ob_type->tp_as_number != NULL &&
|
|
(f = v->ob_type->tp_as_number->nb_invert) != NULL)
|
|
return (*f)(v);
|
|
err_setstr(TypeError, "bad operand type(s) for unary ~");
|
|
return NULL;
|
|
}
|
|
|
|
static object *
|
|
not(v)
|
|
object *v;
|
|
{
|
|
int outcome = testbool(v);
|
|
object *w;
|
|
if (outcome < 0)
|
|
return NULL;
|
|
if (outcome == 0)
|
|
w = True;
|
|
else
|
|
w = False;
|
|
INCREF(w);
|
|
return w;
|
|
}
|
|
|
|
|
|
/* External interface to call any callable object. The arg may be NULL. */
|
|
|
|
object *
|
|
call_object(func, arg)
|
|
object *func;
|
|
object *arg;
|
|
{
|
|
if (is_instancemethodobject(func) || is_funcobject(func))
|
|
return call_function(func, arg);
|
|
else
|
|
return call_builtin(func, arg);
|
|
}
|
|
|
|
static object *
|
|
call_builtin(func, arg)
|
|
object *func;
|
|
object *arg;
|
|
{
|
|
if (is_methodobject(func)) {
|
|
method meth = getmethod(func);
|
|
object *self = getself(func);
|
|
if (!getvarargs(func) && arg != NULL && is_tupleobject(arg)) {
|
|
int size = gettuplesize(arg);
|
|
if (size == 1)
|
|
arg = gettupleitem(arg, 0);
|
|
else if (size == 0)
|
|
arg = NULL;
|
|
}
|
|
return (*meth)(self, arg);
|
|
}
|
|
if (is_classobject(func)) {
|
|
return newinstanceobject(func, arg);
|
|
}
|
|
err_setstr(TypeError, "call of non-function");
|
|
return NULL;
|
|
}
|
|
|
|
static object *
|
|
call_function(func, arg)
|
|
object *func;
|
|
object *arg;
|
|
{
|
|
object *newarg = NULL;
|
|
object *newlocals, *newglobals;
|
|
object *class = NULL;
|
|
object *co, *v;
|
|
|
|
if (is_instancemethodobject(func)) {
|
|
object *self = instancemethodgetself(func);
|
|
class = instancemethodgetclass(func);
|
|
func = instancemethodgetfunc(func);
|
|
if (self == NULL) {
|
|
/* Unbound methods must be called with an instance of
|
|
the class (or a derived class) as first argument */
|
|
if (arg != NULL && is_tupleobject(arg) &&
|
|
gettuplesize(arg) >= 1) {
|
|
self = gettupleitem(arg, 0);
|
|
if (self != NULL &&
|
|
is_instanceobject(self) &&
|
|
issubclass((object *)
|
|
(((instanceobject *)self)->in_class),
|
|
class))
|
|
/* self = self */ ;
|
|
else
|
|
self = NULL;
|
|
}
|
|
if (self == NULL) {
|
|
err_setstr(TypeError,
|
|
"unbound method must be called with class instance argument");
|
|
return NULL;
|
|
}
|
|
}
|
|
else {
|
|
int argcount;
|
|
if (arg == NULL)
|
|
argcount = 0;
|
|
else if (is_tupleobject(arg))
|
|
argcount = gettuplesize(arg);
|
|
else
|
|
argcount = 1;
|
|
newarg = newtupleobject(argcount + 1);
|
|
if (newarg == NULL)
|
|
return NULL;
|
|
INCREF(self);
|
|
settupleitem(newarg, 0, self);
|
|
if (arg != NULL && !is_tupleobject(arg)) {
|
|
INCREF(arg);
|
|
settupleitem(newarg, 1, arg);
|
|
}
|
|
else {
|
|
int i;
|
|
object *v;
|
|
for (i = 0; i < argcount; i++) {
|
|
v = gettupleitem(arg, i);
|
|
XINCREF(v);
|
|
settupleitem(newarg, i+1, v);
|
|
}
|
|
}
|
|
arg = newarg;
|
|
}
|
|
}
|
|
else {
|
|
if (!is_funcobject(func)) {
|
|
err_setstr(TypeError, "call of non-function");
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
co = getfunccode(func);
|
|
if (co == NULL) {
|
|
XDECREF(newarg);
|
|
return NULL;
|
|
}
|
|
if (!is_codeobject(co)) {
|
|
fprintf(stderr, "XXX Bad code\n");
|
|
abort();
|
|
}
|
|
newlocals = newdictobject();
|
|
if (newlocals == NULL) {
|
|
XDECREF(newarg);
|
|
return NULL;
|
|
}
|
|
|
|
newglobals = getfuncglobals(func);
|
|
INCREF(newglobals);
|
|
|
|
v = eval_code((codeobject *)co, newglobals, newlocals, class, arg);
|
|
|
|
DECREF(newlocals);
|
|
DECREF(newglobals);
|
|
|
|
XDECREF(newarg);
|
|
|
|
return v;
|
|
}
|
|
|
|
static object *
|
|
apply_subscript(v, w)
|
|
object *v, *w;
|
|
{
|
|
typeobject *tp = v->ob_type;
|
|
if (tp->tp_as_sequence == NULL && tp->tp_as_mapping == NULL) {
|
|
err_setstr(TypeError, "unsubscriptable object");
|
|
return NULL;
|
|
}
|
|
if (tp->tp_as_mapping != NULL) {
|
|
return (*tp->tp_as_mapping->mp_subscript)(v, w);
|
|
}
|
|
else {
|
|
int i;
|
|
if (!is_intobject(w)) {
|
|
err_setstr(TypeError, "sequence subscript not int");
|
|
return NULL;
|
|
}
|
|
i = getintvalue(w);
|
|
if (i < 0) {
|
|
int len = (*tp->tp_as_sequence->sq_length)(v);
|
|
if (len < 0)
|
|
return NULL;
|
|
i += len;
|
|
}
|
|
return (*tp->tp_as_sequence->sq_item)(v, i);
|
|
}
|
|
}
|
|
|
|
static object *
|
|
loop_subscript(v, w)
|
|
object *v, *w;
|
|
{
|
|
sequence_methods *sq = v->ob_type->tp_as_sequence;
|
|
int i, n;
|
|
if (sq == NULL) {
|
|
err_setstr(TypeError, "loop over non-sequence");
|
|
return NULL;
|
|
}
|
|
i = getintvalue(w);
|
|
n = (*sq->sq_length)(v);
|
|
if (n < 0)
|
|
return NULL; /* Exception */
|
|
if (i >= n)
|
|
return NULL; /* End of loop */
|
|
return (*sq->sq_item)(v, i);
|
|
}
|
|
|
|
static int
|
|
slice_index(v, isize, pi)
|
|
object *v;
|
|
int isize;
|
|
int *pi;
|
|
{
|
|
if (v != NULL) {
|
|
if (!is_intobject(v)) {
|
|
err_setstr(TypeError, "slice index must be int");
|
|
return -1;
|
|
}
|
|
*pi = getintvalue(v);
|
|
if (*pi < 0)
|
|
*pi += isize;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static object *
|
|
apply_slice(u, v, w) /* return u[v:w] */
|
|
object *u, *v, *w;
|
|
{
|
|
typeobject *tp = u->ob_type;
|
|
int ilow, ihigh, isize;
|
|
if (tp->tp_as_sequence == NULL) {
|
|
err_setstr(TypeError, "only sequences can be sliced");
|
|
return NULL;
|
|
}
|
|
ilow = 0;
|
|
isize = ihigh = (*tp->tp_as_sequence->sq_length)(u);
|
|
if (isize < 0)
|
|
return NULL;
|
|
if (slice_index(v, isize, &ilow) != 0)
|
|
return NULL;
|
|
if (slice_index(w, isize, &ihigh) != 0)
|
|
return NULL;
|
|
return (*tp->tp_as_sequence->sq_slice)(u, ilow, ihigh);
|
|
}
|
|
|
|
static int
|
|
assign_subscript(w, key, v) /* w[key] = v */
|
|
object *w;
|
|
object *key;
|
|
object *v;
|
|
{
|
|
typeobject *tp = w->ob_type;
|
|
sequence_methods *sq;
|
|
mapping_methods *mp;
|
|
int (*func)();
|
|
if ((mp = tp->tp_as_mapping) != NULL &&
|
|
(func = mp->mp_ass_subscript) != NULL) {
|
|
return (*func)(w, key, v);
|
|
}
|
|
else if ((sq = tp->tp_as_sequence) != NULL &&
|
|
(func = sq->sq_ass_item) != NULL) {
|
|
if (!is_intobject(key)) {
|
|
err_setstr(TypeError,
|
|
"sequence subscript must be integer (assign or del)");
|
|
return -1;
|
|
}
|
|
else {
|
|
int i = getintvalue(key);
|
|
if (i < 0) {
|
|
int len = (*sq->sq_length)(w);
|
|
if (len < 0)
|
|
return -1;
|
|
i += len;
|
|
}
|
|
return (*func)(w, i, v);
|
|
}
|
|
}
|
|
else {
|
|
err_setstr(TypeError,
|
|
"can't assign to this subscripted object");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
static int
|
|
assign_slice(u, v, w, x) /* u[v:w] = x */
|
|
object *u, *v, *w, *x;
|
|
{
|
|
sequence_methods *sq = u->ob_type->tp_as_sequence;
|
|
int ilow, ihigh, isize;
|
|
if (sq == NULL) {
|
|
err_setstr(TypeError, "assign to slice of non-sequence");
|
|
return -1;
|
|
}
|
|
if (sq == NULL || sq->sq_ass_slice == NULL) {
|
|
err_setstr(TypeError, "unassignable slice");
|
|
return -1;
|
|
}
|
|
ilow = 0;
|
|
isize = ihigh = (*sq->sq_length)(u);
|
|
if (isize < 0)
|
|
return -1;
|
|
if (slice_index(v, isize, &ilow) != 0)
|
|
return -1;
|
|
if (slice_index(w, isize, &ihigh) != 0)
|
|
return -1;
|
|
return (*sq->sq_ass_slice)(u, ilow, ihigh, x);
|
|
}
|
|
|
|
static int
|
|
cmp_exception(err, v)
|
|
object *err, *v;
|
|
{
|
|
if (is_tupleobject(v)) {
|
|
int i, n;
|
|
n = gettuplesize(v);
|
|
for (i = 0; i < n; i++) {
|
|
/* Test recursively */
|
|
if (cmp_exception(err, gettupleitem(v, i)))
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
return err == v;
|
|
}
|
|
|
|
static int
|
|
cmp_member(v, w)
|
|
object *v, *w;
|
|
{
|
|
int i, n, cmp;
|
|
object *x;
|
|
sequence_methods *sq;
|
|
/* Special case for char in string */
|
|
if (is_stringobject(w)) {
|
|
register char *s, *end;
|
|
register char c;
|
|
if (!is_stringobject(v) || getstringsize(v) != 1) {
|
|
err_setstr(TypeError,
|
|
"string member test needs char left operand");
|
|
return -1;
|
|
}
|
|
c = getstringvalue(v)[0];
|
|
s = getstringvalue(w);
|
|
end = s + getstringsize(w);
|
|
while (s < end) {
|
|
if (c == *s++)
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
sq = w->ob_type->tp_as_sequence;
|
|
if (sq == NULL) {
|
|
err_setstr(TypeError,
|
|
"'in' or 'not in' needs sequence right argument");
|
|
return -1;
|
|
}
|
|
n = (*sq->sq_length)(w);
|
|
if (n < 0)
|
|
return -1;
|
|
for (i = 0; i < n; i++) {
|
|
x = (*sq->sq_item)(w, i);
|
|
cmp = cmpobject(v, x);
|
|
XDECREF(x);
|
|
if (cmp == 0)
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static object *
|
|
cmp_outcome(op, v, w)
|
|
int op;
|
|
register object *v;
|
|
register object *w;
|
|
{
|
|
register int cmp;
|
|
register int res = 0;
|
|
switch (op) {
|
|
case IS:
|
|
case IS_NOT:
|
|
res = (v == w);
|
|
if (op == (int) IS_NOT)
|
|
res = !res;
|
|
break;
|
|
case IN:
|
|
case NOT_IN:
|
|
res = cmp_member(v, w);
|
|
if (res < 0)
|
|
return NULL;
|
|
if (op == (int) NOT_IN)
|
|
res = !res;
|
|
break;
|
|
case EXC_MATCH:
|
|
res = cmp_exception(v, w);
|
|
break;
|
|
default:
|
|
cmp = cmpobject(v, w);
|
|
switch (op) {
|
|
case LT: res = cmp < 0; break;
|
|
case LE: res = cmp <= 0; break;
|
|
case EQ: res = cmp == 0; break;
|
|
case NE: res = cmp != 0; break;
|
|
case GT: res = cmp > 0; break;
|
|
case GE: res = cmp >= 0; break;
|
|
/* XXX no default? (res is initialized to 0 though) */
|
|
}
|
|
}
|
|
v = res ? True : False;
|
|
INCREF(v);
|
|
return v;
|
|
}
|
|
|
|
static int
|
|
import_from(locals, v, name)
|
|
object *locals;
|
|
object *v;
|
|
object *name;
|
|
{
|
|
object *w, *x;
|
|
w = getmoduledict(v);
|
|
if (getstringvalue(name)[0] == '*') {
|
|
int pos, err;
|
|
object *name, *value;
|
|
pos = 0;
|
|
while (mappinggetnext(w, &pos, &name, &value)) {
|
|
if (!is_stringobject(name) ||
|
|
getstringvalue(name)[0] == '_')
|
|
continue;
|
|
if (is_accessobject(value)) {
|
|
value = getaccessvalue(value, (object *)NULL);
|
|
if (value == NULL) {
|
|
err_clear();
|
|
continue;
|
|
}
|
|
}
|
|
else
|
|
INCREF(value);
|
|
err = dict2insert(locals, name, value);
|
|
DECREF(value);
|
|
if (err != 0)
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
else {
|
|
x = dict2lookup(w, name);
|
|
if (x == NULL) {
|
|
char buf[250];
|
|
sprintf(buf, "cannot import name %.230s",
|
|
getstringvalue(name));
|
|
err_setstr(ImportError, buf);
|
|
return -1;
|
|
}
|
|
else
|
|
return dict2insert(locals, name, x);
|
|
}
|
|
}
|
|
|
|
static object *
|
|
build_class(methods, bases, name)
|
|
object *methods; /* dictionary */
|
|
object *bases; /* tuple containing classes */
|
|
object *name; /* string */
|
|
{
|
|
int i;
|
|
if (!is_tupleobject(bases)) {
|
|
err_setstr(SystemError, "build_class with non-tuple bases");
|
|
return NULL;
|
|
}
|
|
if (!is_dictobject(methods)) {
|
|
err_setstr(SystemError, "build_class with non-dictionary");
|
|
return NULL;
|
|
}
|
|
if (!is_stringobject(name)) {
|
|
err_setstr(SystemError, "build_class witn non-string name");
|
|
return NULL;
|
|
}
|
|
for (i = gettuplesize(bases); --i >= 0; ) {
|
|
object *base = gettupleitem(bases, i);
|
|
if (!is_classobject(base)) {
|
|
err_setstr(TypeError,
|
|
"base is not a class object");
|
|
return NULL;
|
|
}
|
|
}
|
|
return newclassobject(bases, methods, name);
|
|
}
|
|
|
|
static int
|
|
access_statement(name, vmode, f)
|
|
object *name;
|
|
object *vmode;
|
|
frameobject *f;
|
|
{
|
|
int mode = getintvalue(vmode);
|
|
object *value, *ac;
|
|
typeobject *type;
|
|
int fastind, ret;
|
|
fastind = -1;
|
|
if (f->f_localmap == NULL)
|
|
value = dict2lookup(f->f_locals, name);
|
|
else {
|
|
value = dict2lookup(f->f_localmap, name);
|
|
if (value == NULL || !is_intobject(value))
|
|
value = NULL;
|
|
else {
|
|
fastind = getintvalue(value);
|
|
if (0 <= fastind &&
|
|
fastind < getlistsize(f->f_fastlocals))
|
|
value = getlistitem(f->f_fastlocals, fastind);
|
|
else {
|
|
value = NULL;
|
|
fastind = -1;
|
|
}
|
|
}
|
|
}
|
|
if (value && is_accessobject(value)) {
|
|
err_setstr(AccessError, "can't override access");
|
|
return -1;
|
|
}
|
|
err_clear();
|
|
if (value != NULL && value != None)
|
|
type = value->ob_type;
|
|
else
|
|
type = NULL;
|
|
ac = newaccessobject(value, f->f_locals, type, mode);
|
|
if (ac == NULL)
|
|
return -1;
|
|
if (fastind >= 0)
|
|
ret = setlistitem(f->f_fastlocals, fastind, ac);
|
|
else {
|
|
ret = dict2insert(f->f_locals, name, ac);
|
|
DECREF(ac);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int
|
|
exec_statement(prog, globals, locals)
|
|
object *prog;
|
|
object *globals;
|
|
object *locals;
|
|
{
|
|
char *s;
|
|
int n;
|
|
|
|
if (is_tupleobject(prog) && globals == None && locals == None &&
|
|
((n = gettuplesize(prog)) == 2 || n == 3)) {
|
|
/* Backward compatibility hack */
|
|
globals = gettupleitem(prog, 1);
|
|
if (n == 3)
|
|
locals = gettupleitem(prog, 2);
|
|
prog = gettupleitem(prog, 0);
|
|
}
|
|
if (globals == None) {
|
|
globals = getglobals();
|
|
if (locals == None)
|
|
locals = getlocals();
|
|
}
|
|
else if (locals == None)
|
|
locals = globals;
|
|
if (!is_stringobject(prog) &&
|
|
!is_codeobject(prog) &&
|
|
!is_fileobject(prog)) {
|
|
err_setstr(TypeError,
|
|
"exec 1st arg must be string, code or file object");
|
|
return -1;
|
|
}
|
|
if (!is_dictobject(globals) || !is_dictobject(locals)) {
|
|
err_setstr(TypeError,
|
|
"exec 2nd/3rd args must be dict or None");
|
|
return -1;
|
|
}
|
|
if (is_codeobject(prog)) {
|
|
if (eval_code((codeobject *) prog, globals, locals,
|
|
(object *)NULL, (object *)NULL) == NULL)
|
|
return -1;
|
|
return 0;
|
|
}
|
|
if (is_fileobject(prog)) {
|
|
FILE *fp = getfilefile(prog);
|
|
char *name = getstringvalue(getfilename(prog));
|
|
if (run_file(fp, name, file_input, globals, locals) == NULL)
|
|
return -1;
|
|
return 0;
|
|
}
|
|
s = getstringvalue(prog);
|
|
if (strlen(s) != getstringsize(prog)) {
|
|
err_setstr(ValueError, "embedded '\\0' in exec string");
|
|
return -1;
|
|
}
|
|
if (run_string(s, file_input, globals, locals) == NULL)
|
|
return -1;
|
|
return 0;
|
|
}
|