556 lines
12 KiB
C
556 lines
12 KiB
C
/***********************************************************
|
|
Copyright 1991 by Stichting Mathematisch Centrum, Amsterdam, The
|
|
Netherlands.
|
|
|
|
All Rights Reserved
|
|
|
|
Permission to use, copy, modify, and distribute this software and its
|
|
documentation for any purpose and without fee is hereby granted,
|
|
provided that the above copyright notice appear in all copies and that
|
|
both that copyright notice and this permission notice appear in
|
|
supporting documentation, and that the names of Stichting Mathematisch
|
|
Centrum or CWI not be used in advertising or publicity pertaining to
|
|
distribution of the software without specific, written prior permission.
|
|
|
|
STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
|
|
THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
|
FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
|
|
FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
|
|
OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
|
|
******************************************************************/
|
|
|
|
/* Built-in functions */
|
|
|
|
#include "allobjects.h"
|
|
|
|
#include "node.h"
|
|
#include "graminit.h"
|
|
#include "errcode.h"
|
|
#include "sysmodule.h"
|
|
#include "bltinmodule.h"
|
|
#include "import.h"
|
|
#include "pythonrun.h"
|
|
#include "compile.h" /* For ceval.h */
|
|
#include "ceval.h"
|
|
#include "modsupport.h"
|
|
|
|
static object *
|
|
builtin_abs(self, v)
|
|
object *self;
|
|
object *v;
|
|
{
|
|
number_methods *nm;
|
|
if (v == NULL || (nm = v->ob_type->tp_as_number) == NULL) {
|
|
err_setstr(TypeError, "abs() requires numeric argument");
|
|
return NULL;
|
|
}
|
|
return (*nm->nb_absolute)(v);
|
|
}
|
|
|
|
static object *
|
|
builtin_chr(self, v)
|
|
object *self;
|
|
object *v;
|
|
{
|
|
long x;
|
|
char s[1];
|
|
if (v == NULL || !is_intobject(v)) {
|
|
err_setstr(TypeError, "chr() must have int argument");
|
|
return NULL;
|
|
}
|
|
x = getintvalue(v);
|
|
if (x < 0 || x >= 256) {
|
|
err_setstr(RuntimeError, "chr() arg not in range(256)");
|
|
return NULL;
|
|
}
|
|
s[0] = x;
|
|
return newsizedstringobject(s, 1);
|
|
}
|
|
|
|
static object *
|
|
builtin_dir(self, v)
|
|
object *self;
|
|
object *v;
|
|
{
|
|
object *d;
|
|
if (v == NULL) {
|
|
d = getlocals();
|
|
}
|
|
else {
|
|
if (!is_moduleobject(v)) {
|
|
err_setstr(TypeError,
|
|
"dir() argument, must be module or absent");
|
|
return NULL;
|
|
}
|
|
d = getmoduledict(v);
|
|
}
|
|
v = getdictkeys(d);
|
|
if (sortlist(v) != 0) {
|
|
DECREF(v);
|
|
v = NULL;
|
|
}
|
|
return v;
|
|
}
|
|
|
|
static object *
|
|
builtin_divmod(self, v)
|
|
object *self;
|
|
object *v;
|
|
{
|
|
object *x;
|
|
number_methods *nm;
|
|
if (v == NULL || !is_tupleobject(v) || gettuplesize(v) != 2) {
|
|
err_setstr(TypeError, "divmod() requires 2 arguments");
|
|
return NULL;
|
|
}
|
|
x = gettupleitem(v, 0);
|
|
if ((nm = x->ob_type->tp_as_number) == NULL) {
|
|
err_setstr(TypeError, "divmod() requires numeric arguments");
|
|
return NULL;
|
|
}
|
|
return (*nm->nb_divmod)(x, gettupleitem(v, 1));
|
|
}
|
|
|
|
static object *
|
|
exec_eval(v, start)
|
|
object *v;
|
|
int start;
|
|
{
|
|
object *str = NULL, *globals = NULL, *locals = NULL;
|
|
int n;
|
|
if (v != NULL) {
|
|
if (is_stringobject(v))
|
|
str = v;
|
|
else if (is_tupleobject(v) &&
|
|
((n = gettuplesize(v)) == 2 || n == 3)) {
|
|
str = gettupleitem(v, 0);
|
|
globals = gettupleitem(v, 1);
|
|
if (n == 3)
|
|
locals = gettupleitem(v, 2);
|
|
}
|
|
}
|
|
if (str == NULL || !is_stringobject(str) ||
|
|
globals != NULL && !is_dictobject(globals) ||
|
|
locals != NULL && !is_dictobject(locals)) {
|
|
err_setstr(TypeError,
|
|
"exec/eval arguments must be string[,dict[,dict]]");
|
|
return NULL;
|
|
}
|
|
return run_string(getstringvalue(str), start, globals, locals);
|
|
}
|
|
|
|
static object *
|
|
builtin_eval(self, v)
|
|
object *self;
|
|
object *v;
|
|
{
|
|
return exec_eval(v, eval_input);
|
|
}
|
|
|
|
static object *
|
|
builtin_exec(self, v)
|
|
object *self;
|
|
object *v;
|
|
{
|
|
return exec_eval(v, file_input);
|
|
}
|
|
|
|
static object *
|
|
builtin_float(self, v)
|
|
object *self;
|
|
object *v;
|
|
{
|
|
if (v == NULL) {
|
|
/* */
|
|
}
|
|
else if (is_intobject(v)) {
|
|
long x = getintvalue(v);
|
|
return newfloatobject((double)x);
|
|
}
|
|
else if (is_longobject(v)) {
|
|
return newfloatobject(dgetlongvalue(v));
|
|
}
|
|
else if (is_floatobject(v)) {
|
|
INCREF(v);
|
|
return v;
|
|
}
|
|
err_setstr(TypeError, "float() argument must be int, long or float");
|
|
return NULL;
|
|
}
|
|
|
|
static object *
|
|
builtin_input(self, v)
|
|
object *self;
|
|
object *v;
|
|
{
|
|
FILE *in = sysgetfile("stdin", stdin);
|
|
FILE *out = sysgetfile("stdout", stdout);
|
|
node *n;
|
|
int err;
|
|
object *m, *d;
|
|
flushline();
|
|
if (v != NULL)
|
|
printobject(v, out, PRINT_RAW);
|
|
m = add_module("__main__");
|
|
d = getmoduledict(m);
|
|
return run_file(in, "<stdin>", expr_input, d, d);
|
|
}
|
|
|
|
static object *
|
|
builtin_int(self, v)
|
|
object *self;
|
|
object *v;
|
|
{
|
|
if (v == NULL) {
|
|
/* */
|
|
}
|
|
else if (is_intobject(v)) {
|
|
INCREF(v);
|
|
return v;
|
|
}
|
|
else if (is_longobject(v)) {
|
|
long x;
|
|
x = getlongvalue(v);
|
|
if (err_occurred())
|
|
return NULL;
|
|
return newintobject(x);
|
|
}
|
|
else if (is_floatobject(v)) {
|
|
double x = getfloatvalue(v);
|
|
/* XXX should check for overflow */
|
|
return newintobject((long)x);
|
|
}
|
|
err_setstr(TypeError, "int() argument must be int, long or float");
|
|
return NULL;
|
|
}
|
|
|
|
static object *
|
|
builtin_len(self, v)
|
|
object *self;
|
|
object *v;
|
|
{
|
|
long len;
|
|
typeobject *tp;
|
|
if (v == NULL) {
|
|
err_setstr(TypeError, "len() without argument");
|
|
return NULL;
|
|
}
|
|
tp = v->ob_type;
|
|
if (tp->tp_as_sequence != NULL) {
|
|
len = (*tp->tp_as_sequence->sq_length)(v);
|
|
}
|
|
else if (tp->tp_as_mapping != NULL) {
|
|
len = (*tp->tp_as_mapping->mp_length)(v);
|
|
}
|
|
else {
|
|
err_setstr(TypeError, "len() of unsized object");
|
|
return NULL;
|
|
}
|
|
return newintobject(len);
|
|
}
|
|
|
|
static object *
|
|
builtin_long(self, v)
|
|
object *self;
|
|
object *v;
|
|
{
|
|
if (v == NULL) {
|
|
/* */
|
|
}
|
|
else if (is_intobject(v)) {
|
|
return newlongobject(getintvalue(v));
|
|
}
|
|
else if (is_longobject(v)) {
|
|
INCREF(v);
|
|
return v;
|
|
}
|
|
else if (is_floatobject(v)) {
|
|
double x = getfloatvalue(v);
|
|
return dnewlongobject(x);
|
|
}
|
|
err_setstr(TypeError, "long() argument must be int, long or float");
|
|
return NULL;
|
|
}
|
|
|
|
static object *
|
|
min_max(v, sign)
|
|
object *v;
|
|
int sign;
|
|
{
|
|
int i, n, cmp;
|
|
object *w, *x;
|
|
sequence_methods *sq;
|
|
if (v == NULL) {
|
|
err_setstr(TypeError, "min() or max() without argument");
|
|
return NULL;
|
|
}
|
|
sq = v->ob_type->tp_as_sequence;
|
|
if (sq == NULL) {
|
|
err_setstr(TypeError, "min() or max() of non-sequence");
|
|
return NULL;
|
|
}
|
|
n = (*sq->sq_length)(v);
|
|
if (n == 0) {
|
|
err_setstr(RuntimeError, "min() or max() of empty sequence");
|
|
return NULL;
|
|
}
|
|
w = (*sq->sq_item)(v, 0); /* Implies INCREF */
|
|
for (i = 1; i < n; i++) {
|
|
x = (*sq->sq_item)(v, i); /* Implies INCREF */
|
|
cmp = cmpobject(x, w);
|
|
if (cmp * sign > 0) {
|
|
DECREF(w);
|
|
w = x;
|
|
}
|
|
else
|
|
DECREF(x);
|
|
}
|
|
return w;
|
|
}
|
|
|
|
static object *
|
|
builtin_min(self, v)
|
|
object *self;
|
|
object *v;
|
|
{
|
|
return min_max(v, -1);
|
|
}
|
|
|
|
static object *
|
|
builtin_max(self, v)
|
|
object *self;
|
|
object *v;
|
|
{
|
|
return min_max(v, 1);
|
|
}
|
|
|
|
static object *
|
|
builtin_open(self, v)
|
|
object *self;
|
|
object *v;
|
|
{
|
|
object *name, *mode;
|
|
if (v == NULL || !is_tupleobject(v) || gettuplesize(v) != 2 ||
|
|
!is_stringobject(name = gettupleitem(v, 0)) ||
|
|
!is_stringobject(mode = gettupleitem(v, 1))) {
|
|
err_setstr(TypeError, "open() requires 2 string arguments");
|
|
return NULL;
|
|
}
|
|
v = newfileobject(getstringvalue(name), getstringvalue(mode));
|
|
return v;
|
|
}
|
|
|
|
static object *
|
|
builtin_ord(self, v)
|
|
object *self;
|
|
object *v;
|
|
{
|
|
if (v == NULL || !is_stringobject(v)) {
|
|
err_setstr(TypeError, "ord() must have string argument");
|
|
return NULL;
|
|
}
|
|
if (getstringsize(v) != 1) {
|
|
err_setstr(RuntimeError, "ord() arg must have length 1");
|
|
return NULL;
|
|
}
|
|
return newintobject((long)(getstringvalue(v)[0] & 0xff));
|
|
}
|
|
|
|
static object *
|
|
builtin_pow(self, v)
|
|
object *self;
|
|
object *v;
|
|
{
|
|
object *x;
|
|
number_methods *nm;
|
|
if (v == NULL || !is_tupleobject(v) || gettuplesize(v) != 2) {
|
|
err_setstr(TypeError, "pow() requires 2 arguments");
|
|
return NULL;
|
|
}
|
|
x = gettupleitem(v, 0);
|
|
if ((nm = x->ob_type->tp_as_number) == NULL) {
|
|
err_setstr(TypeError, "pow() requires numeric arguments");
|
|
return NULL;
|
|
}
|
|
return (*nm->nb_power)(x, gettupleitem(v, 1));
|
|
}
|
|
|
|
static object *
|
|
builtin_range(self, v)
|
|
object *self;
|
|
object *v;
|
|
{
|
|
static char *errmsg = "range() requires 1-3 int arguments";
|
|
int i, n;
|
|
long ilow, ihigh, istep;
|
|
if (v != NULL && is_intobject(v)) {
|
|
ilow = 0; ihigh = getintvalue(v); istep = 1;
|
|
}
|
|
else if (v == NULL || !is_tupleobject(v)) {
|
|
err_setstr(TypeError, errmsg);
|
|
return NULL;
|
|
}
|
|
else {
|
|
n = gettuplesize(v);
|
|
if (n < 1 || n > 3) {
|
|
err_setstr(TypeError, errmsg);
|
|
return NULL;
|
|
}
|
|
for (i = 0; i < n; i++) {
|
|
if (!is_intobject(gettupleitem(v, i))) {
|
|
err_setstr(TypeError, errmsg);
|
|
return NULL;
|
|
}
|
|
}
|
|
if (n == 3) {
|
|
istep = getintvalue(gettupleitem(v, 2));
|
|
--n;
|
|
}
|
|
else
|
|
istep = 1;
|
|
ihigh = getintvalue(gettupleitem(v, --n));
|
|
if (n > 0)
|
|
ilow = getintvalue(gettupleitem(v, 0));
|
|
else
|
|
ilow = 0;
|
|
}
|
|
if (istep == 0) {
|
|
err_setstr(RuntimeError, "zero step for range()");
|
|
return NULL;
|
|
}
|
|
/* XXX ought to check overflow of subtraction */
|
|
if (istep > 0)
|
|
n = (ihigh - ilow + istep - 1) / istep;
|
|
else
|
|
n = (ihigh - ilow + istep + 1) / istep;
|
|
if (n < 0)
|
|
n = 0;
|
|
v = newlistobject(n);
|
|
if (v == NULL)
|
|
return NULL;
|
|
for (i = 0; i < n; i++) {
|
|
object *w = newintobject(ilow);
|
|
if (w == NULL) {
|
|
DECREF(v);
|
|
return NULL;
|
|
}
|
|
setlistitem(v, i, w);
|
|
ilow += istep;
|
|
}
|
|
return v;
|
|
}
|
|
|
|
static object *
|
|
builtin_raw_input(self, v)
|
|
object *self;
|
|
object *v;
|
|
{
|
|
FILE *out = sysgetfile("stdout", stdout);
|
|
flushline();
|
|
if (v != NULL)
|
|
printobject(v, out, PRINT_RAW);
|
|
return filegetline(sysget("stdin"), -1);
|
|
}
|
|
|
|
static object *
|
|
builtin_reload(self, v)
|
|
object *self;
|
|
object *v;
|
|
{
|
|
return reload_module(v);
|
|
}
|
|
|
|
static object *
|
|
builtin_type(self, v)
|
|
object *self;
|
|
object *v;
|
|
{
|
|
if (v == NULL) {
|
|
err_setstr(TypeError, "type() requres an argument");
|
|
return NULL;
|
|
}
|
|
v = (object *)v->ob_type;
|
|
INCREF(v);
|
|
return v;
|
|
}
|
|
|
|
static struct methodlist builtin_methods[] = {
|
|
{"abs", builtin_abs},
|
|
{"chr", builtin_chr},
|
|
{"dir", builtin_dir},
|
|
{"divmod", builtin_divmod},
|
|
{"eval", builtin_eval},
|
|
{"exec", builtin_exec},
|
|
{"float", builtin_float},
|
|
{"input", builtin_input},
|
|
{"int", builtin_int},
|
|
{"len", builtin_len},
|
|
{"long", builtin_long},
|
|
{"max", builtin_max},
|
|
{"min", builtin_min},
|
|
{"open", builtin_open}, /* XXX move to OS module */
|
|
{"ord", builtin_ord},
|
|
{"pow", builtin_pow},
|
|
{"range", builtin_range},
|
|
{"raw_input", builtin_raw_input},
|
|
{"reload", builtin_reload},
|
|
{"type", builtin_type},
|
|
{NULL, NULL},
|
|
};
|
|
|
|
static object *builtin_dict;
|
|
|
|
object *
|
|
getbuiltin(name)
|
|
char *name;
|
|
{
|
|
return dictlookup(builtin_dict, name);
|
|
}
|
|
|
|
/* Predefined exceptions */
|
|
|
|
object *RuntimeError;
|
|
object *EOFError;
|
|
object *TypeError;
|
|
object *MemoryError;
|
|
object *NameError;
|
|
object *SystemError;
|
|
object *KeyboardInterrupt;
|
|
|
|
static object *
|
|
newstdexception(name, message)
|
|
char *name, *message;
|
|
{
|
|
object *v = newstringobject(message);
|
|
if (v == NULL || dictinsert(builtin_dict, name, v) != 0)
|
|
fatal("no mem for new standard exception");
|
|
return v;
|
|
}
|
|
|
|
static void
|
|
initerrors()
|
|
{
|
|
RuntimeError = newstdexception("RuntimeError", "run-time error");
|
|
EOFError = newstdexception("EOFError", "end-of-file read");
|
|
TypeError = newstdexception("TypeError", "type error");
|
|
MemoryError = newstdexception("MemoryError", "out of memory");
|
|
NameError = newstdexception("NameError", "undefined name");
|
|
SystemError = newstdexception("SystemError", "system error");
|
|
KeyboardInterrupt =
|
|
newstdexception("KeyboardInterrupt", "keyboard interrupt");
|
|
}
|
|
|
|
void
|
|
initbuiltin()
|
|
{
|
|
object *m;
|
|
m = initmodule("builtin", builtin_methods);
|
|
builtin_dict = getmoduledict(m);
|
|
INCREF(builtin_dict);
|
|
initerrors();
|
|
(void) dictinsert(builtin_dict, "None", None);
|
|
}
|