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Disable support for access statement

This commit is contained in:
Guido van Rossum 1996-08-12 22:00:53 +00:00
parent aacdc9da75
commit 0dfcf753ad
9 changed files with 732 additions and 716 deletions
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11
Grammar/Grammar
View File

@ -29,7 +29,8 @@ fplist: fpdef (',' fpdef)* [',']
stmt: simple_stmt | compound_stmt
simple_stmt: small_stmt (';' small_stmt)* [';'] NEWLINE
small_stmt: expr_stmt | print_stmt | del_stmt | pass_stmt | flow_stmt | import_stmt | global_stmt | access_stmt | exec_stmt
#small_stmt: expr_stmt | print_stmt | del_stmt | pass_stmt | flow_stmt | import_stmt | global_stmt | access_stmt | exec_stmt
small_stmt: expr_stmt | print_stmt | del_stmt | pass_stmt | flow_stmt | import_stmt | global_stmt | exec_stmt
expr_stmt: testlist ('=' testlist)*
# For assignments, additional restrictions enforced by the interpreter
print_stmt: 'print' (test ',')* [test]
@ -43,10 +44,10 @@ raise_stmt: 'raise' test [',' test [',' test]]
import_stmt: 'import' dotted_name (',' dotted_name)* | 'from' dotted_name 'import' ('*' | NAME (',' NAME)*)
dotted_name: NAME ('.' NAME)*
global_stmt: 'global' NAME (',' NAME)*
access_stmt: 'access' ('*' | NAME (',' NAME)*) ':' accesstype (',' accesstype)*
accesstype: NAME+
# accesstype should be ('public' | 'protected' | 'private') ['read'] ['write']
# but can't be because that would create undesirable reserved words!
#access_stmt: 'access' ('*' | NAME (',' NAME)*) ':' accesstype (',' accesstype)*
#accesstype: NAME+
## accesstype should be ('public' | 'protected' | 'private') ['read'] ['write']
## but can't be because that would create undesirable reserved words!
exec_stmt: 'exec' expr ['in' test [',' test]]
compound_stmt: if_stmt | while_stmt | for_stmt | try_stmt | funcdef | classdef

6
Include/accessobject.h
View File

@ -28,6 +28,10 @@ OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
******************************************************************/
/* This object type is no longer supported */
#ifdef SUPPORT_OBSOLETE_ACCESS
/* Access object interface */
/* Access mode bits (note similarity with UNIX permissions) */
@ -60,6 +64,8 @@ int PyAccess_HasValue Py_PROTO((PyObject *));
extern DL_IMPORT(PyTypeObject) PyAnyNumber_Type, PyAnySequence_Type, PyAnyMapping_Type;
#endif /* !SUPPORT_OBSOLETE_ACCESS */
#ifdef __cplusplus
}
#endif

68
Include/graminit.h
View File

@ -21,38 +21,36 @@
#define import_stmt 276
#define dotted_name 277
#define global_stmt 278
#define access_stmt 279
#define accesstype 280
#define exec_stmt 281
#define compound_stmt 282
#define if_stmt 283
#define while_stmt 284
#define for_stmt 285
#define try_stmt 286
#define except_clause 287
#define suite 288
#define test 289
#define and_test 290
#define not_test 291
#define comparison 292
#define comp_op 293
#define expr 294
#define xor_expr 295
#define and_expr 296
#define shift_expr 297
#define arith_expr 298
#define term 299
#define factor 300
#define power 301
#define atom 302
#define lambdef 303
#define trailer 304
#define subscriptlist 305
#define subscript 306
#define sliceop 307
#define exprlist 308
#define testlist 309
#define dictmaker 310
#define classdef 311
#define arglist 312
#define argument 313
#define exec_stmt 279
#define compound_stmt 280
#define if_stmt 281
#define while_stmt 282
#define for_stmt 283
#define try_stmt 284
#define except_clause 285
#define suite 286
#define test 287
#define and_test 288
#define not_test 289
#define comparison 290
#define comp_op 291
#define expr 292
#define xor_expr 293
#define and_expr 294
#define shift_expr 295
#define arith_expr 296
#define term 297
#define factor 298
#define power 299
#define atom 300
#define lambdef 301
#define trailer 302
#define subscriptlist 303
#define subscript 304
#define sliceop 305
#define exprlist 306
#define testlist 307
#define dictmaker 308
#define classdef 309
#define arglist 310
#define argument 311

4
Objects/accessobject.c
View File

@ -22,6 +22,8 @@ OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
******************************************************************/
#ifdef SUPPORT_OBSOLETE_ACCESS /* This object type is no longer supported */
/* Access object implementation */
/* XXX TO DO LIST
@ -358,3 +360,5 @@ typeobject Anymappingtype = {
0, /*ob_size*/
"*mapping*", /*tp_name*/
};
#endif /* SUPPORT_OBSOLETE_ACCESS */

31
Objects/classobject.c
View File

@ -37,8 +37,10 @@ newclassobject(bases, dict, name)
object *dict;
object *name; /* String; NULL if unknown */
{
#ifdef SUPPORT_OBSOLETE_ACCESS
int pos;
object *key, *value;
#endif
classobject *op, *dummy;
static object *getattrstr, *setattrstr, *delattrstr;
if (dictlookup(dict, "__doc__") == NULL) {
@ -73,11 +75,13 @@ newclassobject(bases, dict, name)
XINCREF(op->cl_getattr);
XINCREF(op->cl_setattr);
XINCREF(op->cl_delattr);
#ifdef SUPPORT_OBSOLETE_ACCESS
pos = 0;
while (mappinggetnext(dict, &pos, &key, &value)) {
if (is_accessobject(value))
setaccessowner(value, (object *)op);
}
#endif
return (object *) op;
}
@ -151,12 +155,14 @@ class_getattr(op, name)
err_setval(AttributeError, name);
return NULL;
}
#ifdef SUPPORT_OBSOLETE_ACCESS
if (is_accessobject(v)) {
v = getaccessvalue(v, getowner());
if (v == NULL)
return NULL;
}
else
#endif
INCREF(v);
if (is_funcobject(v)) {
object *w = newinstancemethodobject(v, (object *)NULL,
@ -173,7 +179,9 @@ class_setattr(op, name, v)
object *name;
object *v;
{
#ifdef SUPPORT_OBSOLETE_ACCESS
object *ac;
#endif
char *sname = getstringvalue(name);
if (sname[0] == '_' && sname[1] == '_') {
int n = getstringsize(name);
@ -187,9 +195,11 @@ class_setattr(op, name, v)
"classes are read-only in restricted mode");
return -1;
}
#ifdef SUPPORT_OBSOLETE_ACCESS
ac = mappinglookup(op->cl_dict, name);
if (ac != NULL && is_accessobject(ac))
return setaccessvalue(ac, getowner(), v);
#endif
if (v == NULL) {
int rv = mappingremove(op->cl_dict, name);
if (rv < 0)
@ -260,6 +270,7 @@ issubclass(class, base)
/* Instance objects */
#ifdef SUPPORT_OBSOLETE_ACCESS
static int
addaccess(class, inst)
classobject *class;
@ -295,6 +306,7 @@ addaccess(class, inst)
}
return 0;
}
#endif
object *
newinstanceobject(class, arg, kw)
@ -315,8 +327,11 @@ newinstanceobject(class, arg, kw)
INCREF(class);
inst->in_class = (classobject *)class;
inst->in_dict = newdictobject();
if (inst->in_dict == NULL ||
addaccess((classobject *)class, inst) != 0) {
if (inst->in_dict == NULL
#ifdef SUPPORT_OBSOLETE_ACCESS
|| addaccess((classobject *)class, inst) != 0
#endif
) {
DECREF(inst);
return NULL;
}
@ -382,8 +397,12 @@ instance_dealloc(inst)
if ((del = instance_getattr1(inst, delstr)) != NULL) {
object *res = call_object(del, (object *)NULL);
DECREF(del);
XDECREF(res);
/* XXX If __del__ raised an exception, it is ignored! */
if (res == NULL) {
writestring("exception in __del__ method ignored\n",
sysget("stdout"));
}
else
DECREF(res);
}
/* Restore the saved exception and undo the temporary revival */
err_restore(error_type, error_value, error_traceback);
@ -438,12 +457,14 @@ instance_getattr1(inst, name)
return NULL;
}
}
#ifdef SUPPORT_OBSOLETE_ACCESS
if (is_accessobject(v)) {
v = getaccessvalue(v, getowner());
if (v == NULL)
return NULL;
}
else
#endif
INCREF(v);
if (class != NULL) {
if (is_funcobject(v)) {
@ -492,10 +513,12 @@ instance_setattr1(inst, name, v)
object *name;
object *v;
{
#ifdef SUPPORT_OBSOLETE_ACCESS
object *ac;
ac = mappinglookup(inst->in_dict, name);
if (ac != NULL && is_accessobject(ac))
return setaccessvalue(ac, getowner(), v);
#endif
if (v == NULL) {
int rv = mappingremove(inst->in_dict, name);
if (rv < 0)

6
Objects/moduleobject.c
View File

@ -127,9 +127,11 @@ module_getattr(m, name)
if (res == NULL)
err_setstr(AttributeError, name);
else {
#ifdef SUPPORT_OBSOLETE_ACCESS
if (is_accessobject(res))
res = getaccessvalue(res, getglobals());
else
#endif
INCREF(res);
}
return res;
@ -141,14 +143,18 @@ module_setattr(m, name, v)
char *name;
object *v;
{
#ifdef SUPPORT_OBSOLETE_ACCESS
object *ac;
#endif
if (name[0] == '_' && strcmp(name, "__dict__") == 0) {
err_setstr(TypeError, "read-only special attribute");
return -1;
}
#ifdef SUPPORT_OBSOLETE_ACCESS
ac = dictlookup(m->md_dict, name);
if (ac != NULL && is_accessobject(ac))
return setaccessvalue(ac, getglobals(), v);
#endif
if (v == NULL) {
int rv = dictremove(m->md_dict, name);
if (rv < 0)

28
Python/ceval.c
View File

@ -95,7 +95,9 @@ static int cmp_member PROTO((object *, object *));
static object *cmp_outcome PROTO((int, object *, object *));
static int import_from PROTO((object *, object *, object *));
static object *build_class PROTO((object *, object *, object *));
#ifdef SUPPORT_OBSOLETE_ACCESS
static int access_statement PROTO((object *, object *, frameobject *));
#endif
static int exec_statement PROTO((object *, object *, object *));
static object *find_from_args PROTO((frameobject *, int));
@ -324,7 +326,9 @@ eval_code2(co, globals, locals,
register frameobject *f; /* Current frame */
register object **fastlocals;
object *retval; /* Return value */
#ifdef SUPPORT_OBSOLETE_ACCESS
int defmode = 0; /* Default access mode for new variables */
#endif
#ifdef LLTRACE
int lltrace;
#endif
@ -1082,6 +1086,7 @@ eval_code2(co, globals, locals,
err_setstr(SystemError, "no locals");
break;
}
#ifdef SUPPORT_OBSOLETE_ACCESS
u = dict2lookup(x, w);
if (u == NULL) {
if (defmode != 0) {
@ -1103,6 +1108,7 @@ eval_code2(co, globals, locals,
DECREF(v);
break;
}
#endif
err = dict2insert(x, w, v);
DECREF(v);
break;
@ -1113,12 +1119,14 @@ eval_code2(co, globals, locals,
err_setstr(SystemError, "no locals");
break;
}
#ifdef SUPPORT_OBSOLETE_ACCESS
u = dict2lookup(x, w);
if (u != NULL && is_accessobject(u)) {
err = setaccessvalue(u, x,
(object *)NULL);
break;
}
#endif
if ((err = dict2remove(x, w)) != 0)
err_setval(NameError, w);
break;
@ -1196,6 +1204,7 @@ eval_code2(co, globals, locals,
case STORE_GLOBAL:
w = GETNAMEV(oparg);
v = POP();
#ifdef SUPPORT_OBSOLETE_ACCESS
if (f->f_locals != NULL) {
u = dict2lookup(f->f_locals, w);
if (u != NULL && is_accessobject(u)) {
@ -1205,12 +1214,14 @@ eval_code2(co, globals, locals,
break;
}
}
#endif
err = dict2insert(f->f_globals, w, v);
DECREF(v);
break;
case DELETE_GLOBAL:
w = GETNAMEV(oparg);
#ifdef SUPPORT_OBSOLETE_ACCESS
if (f->f_locals != NULL) {
u = dict2lookup(f->f_locals, w);
if (u != NULL && is_accessobject(u)) {
@ -1219,6 +1230,7 @@ eval_code2(co, globals, locals,
break;
}
}
#endif
if ((err = dict2remove(f->f_globals, w)) != 0)
err_setval(NameError, w);
break;
@ -1248,12 +1260,14 @@ eval_code2(co, globals, locals,
}
}
}
#ifdef SUPPORT_OBSOLETE_ACCESS
if (is_accessobject(x)) {
x = getaccessvalue(x, f->f_globals /* XXX */);
if (x == NULL)
break;
}
else
#endif
INCREF(x);
PUSH(x);
break;
@ -1269,12 +1283,14 @@ eval_code2(co, globals, locals,
break;
}
}
#ifdef SUPPORT_OBSOLETE_ACCESS
if (is_accessobject(x)) {
x = getaccessvalue(x, f->f_globals);
if (x == NULL)
break;
}
else
#endif
INCREF(x);
PUSH(x);
break;
@ -1310,28 +1326,33 @@ eval_code2(co, globals, locals,
oparg));
break;
}
#ifdef SUPPORT_OBSOLETE_ACCESS
if (is_accessobject(x)) {
x = getaccessvalue(x, f->f_locals);
if (x == NULL)
break;
}
else
#endif
INCREF(x);
PUSH(x);
break;
case STORE_FAST:
v = POP();
#ifdef SUPPORT_OBSOLETE_ACCESS
w = GETLOCAL(oparg);
if (w != NULL && is_accessobject(w)) {
err = setaccessvalue(w, f->f_locals, v);
DECREF(v);
break;
}
#endif
SETLOCAL(oparg, v);
break;
case DELETE_FAST:
#ifdef SUPPORT_OBSOLETE_ACCESS
x = GETLOCAL(oparg);
if (x == NULL) {
err_setval(NameError,
@ -1344,6 +1365,7 @@ eval_code2(co, globals, locals,
(object *)NULL);
break;
}
#endif
SETLOCAL(oparg, NULL);
break;
@ -1439,6 +1461,7 @@ eval_code2(co, globals, locals,
locals_2_fast(f, 0);
break;
#ifdef SUPPORT_OBSOLETE_ACCESS
case ACCESS_MODE:
v = POP();
w = GETNAMEV(oparg);
@ -1448,6 +1471,7 @@ eval_code2(co, globals, locals,
err = access_statement(w, v, f);
DECREF(v);
break;
#endif
case JUMP_FORWARD:
JUMPBY(oparg);
@ -2826,6 +2850,7 @@ import_from(locals, v, name)
if (!is_stringobject(name) ||
getstringvalue(name)[0] == '_')
continue;
#ifdef SUPPORT_OBSOLETE_ACCESS
if (is_accessobject(value)) {
value = getaccessvalue(value, (object *)NULL);
if (value == NULL) {
@ -2834,6 +2859,7 @@ import_from(locals, v, name)
}
}
else
#endif
INCREF(value);
err = dict2insert(locals, name, value);
DECREF(value);
@ -2902,6 +2928,7 @@ build_class(methods, bases, name)
return newclassobject(bases, methods, name);
}
#ifdef SUPPORT_OBSOLETE_ACCESS
static int
access_statement(name, vmode, f)
object *name;
@ -2931,6 +2958,7 @@ access_statement(name, vmode, f)
locals_2_fast(f, 0);
return ret;
}
#endif
static int
exec_statement(prog, globals, locals)

6
Python/compile.c
View File

@ -1792,12 +1792,12 @@ com_newlocal(c, name)
#define strequ(a, b) (strcmp((a), (b)) == 0)
#ifdef SUPPORT_OBSOLETE_ACCESS
static void
com_access_stmt(c, n)
struct compiling *c;
node *n;
{
#if 0
int i, j, k, mode, imode;
object *vmode;
REQ(n, access_stmt);
@ -1848,8 +1848,8 @@ com_access_stmt(c, n)
com_addoparg(c, LOAD_CONST, imode);
com_addopname(c, ACCESS_MODE, CHILD(n, i));
}
#endif
}
#endif
static void
com_exec_stmt(c, n)
@ -2421,9 +2421,11 @@ com_node(c, n)
case global_stmt:
com_global_stmt(c, n);
break;
#ifdef SUPPORT_OBSOLETE_ACCESS
case access_stmt:
com_access_stmt(c, n);
break;
#endif
case exec_stmt:
com_exec_stmt(c, n);
break;

1288
Python/graminit.c
View File

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