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Intern all names and varnames in newcodeobject(), plus those string 

literals that look like identifiers.  Also intern all strings used as
names during the compilation.
This commit is contained in:
Guido van Rossum 1997-01-18 08:02:57 +00:00
parent a412d24be0
commit 7b89b6a660
1 changed files with 22 additions and 7 deletions
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29
Python/compile.c
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@ -205,13 +205,14 @@ newcodeobject(argcount, nlocals, stacksize, flags,
err_badcall();
return NULL;
}
/* Make sure names and varnames are all strings */
/* Make sure names and varnames are all strings, & intern them */
for (i = gettuplesize(names); --i >= 0; ) {
object *v = gettupleitem(names, i);
if (v == NULL || !is_stringobject(v)) {
err_badcall();
return NULL;
}
PyString_InternInPlace(&PyTuple_GET_ITEM(names, i));
}
for (i = gettuplesize(varnames); --i >= 0; ) {
object *v = gettupleitem(varnames, i);
@ -219,6 +220,20 @@ newcodeobject(argcount, nlocals, stacksize, flags,
err_badcall();
return NULL;
}
PyString_InternInPlace(&PyTuple_GET_ITEM(varnames, i));
}
/* Intern selected string constants */
for (i = gettuplesize(consts); --i >= 0; ) {
object *v = gettupleitem(consts, i);
int n;
char *p;
if (!is_stringobject(v))
continue;
p = getstringvalue(v);
if (strspn(p, "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz")
!= getstringsize(v))
continue;
PyString_InternInPlace(&PyTuple_GET_ITEM(consts, i));
}
co = NEWOBJ(codeobject, &Codetype);
if (co != NULL) {
@ -620,7 +635,7 @@ com_addopnamestr(c, op, name)
com_mangle(c, name, buffer, (int)sizeof(buffer)))
name = buffer;
#endif
if (name == NULL || (v = newstringobject(name)) == NULL) {
if (name == NULL || (v = PyString_InternFromString(name)) == NULL) {
c->c_errors++;
i = 255;
}
@ -986,7 +1001,7 @@ com_argument(c, n, pkeywords)
com_error(c, SyntaxError, "keyword can't be an expression");
}
else {
object *v = newstringobject(STR(m));
object *v = PyString_InternFromString(STR(m));
if (v != NULL && *pkeywords == NULL)
*pkeywords = newdictobject();
if (v == NULL || *pkeywords == NULL)
@ -1973,7 +1988,7 @@ com_newlocal(c, name)
struct compiling *c;
char *name;
{
object *nameval = newstringobject(name);
object *nameval = PyString_InternFromString(name);
int i;
if (nameval == NULL) {
c->c_errors++;
@ -2563,7 +2578,7 @@ com_classdef(c, n)
object *v;
REQ(n, classdef);
/* classdef: class NAME ['(' testlist ')'] ':' suite */
if ((v = newstringobject(STR(CHILD(n, 1)))) == NULL) {
if ((v = PyString_InternFromString(STR(CHILD(n, 1)))) == NULL) {
c->c_errors++;
return;
}
@ -3186,8 +3201,8 @@ jcompile(n, filename, base)
consts = listtuple(sc.c_consts);
names = listtuple(sc.c_names);
varnames = listtuple(sc.c_varnames);
filename = newstringobject(sc.c_filename);
name = newstringobject(sc.c_name);
filename = PyString_InternFromString(sc.c_filename);
name = PyString_InternFromString(sc.c_name);
if (!err_occurred())
co = newcodeobject(sc.c_argcount,
sc.c_nlocals,