mirror of
https://github.com/python/cpython.git
synced 2025-07-18 16:55:20 +00:00
* compile.[ch]: support for lambda()
* PROTO.h, mymalloc.h: added #ifdefs for TURBOC and GNUC. * allobjects.h: added #include "rangeobject.h" * Grammar: added lambda_input; relaxed syntax for exec. * bltinmodule.c: added bagof, map, reduce, lambda, xrange. * tupleobject.[ch]: added resizetuple(). * rangeobject.[ch]: new object type to speed up range operations (not convinced this is needed!!!)
This commit is contained in:
parent
444fc7c90c
commit
12d12c5faf
12 changed files with 1683 additions and 750 deletions
|
@ -37,6 +37,11 @@ OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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#include "compile.h"
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#include "eval.h"
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/* Forward */
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static object *filterstring PROTO((object *, object *));
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static object *filtertuple PROTO((object *, object *));
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static object *exec_eval PROTO((object *v, int start));
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static object *
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builtin_abs(self, v)
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object *self;
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@ -61,6 +66,132 @@ builtin_apply(self, args)
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return call_object(func, arglist);
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}
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static object *
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builtin_bagof(self, args)
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object *self;
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object *args;
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{
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object *func, *seq, *arg, *result;
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sequence_methods *sqf;
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int len, newfunc = 0;
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register int i,j;
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static char bagof_err[] = "bagof() requires 1 or 2 args";
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if (args == NULL) {
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err_setstr(TypeError, bagof_err);
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return NULL;
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}
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if (is_tupleobject(args)) {
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if (gettuplesize(args) != 2) {
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err_setstr(TypeError, bagof_err);
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return NULL;
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}
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func = gettupleitem(args, 0);
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seq = gettupleitem(args, 1);
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if (is_stringobject(func)) {
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if ((func = exec_eval(func, lambda_input)) == NULL)
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return NULL;
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newfunc = 1;
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}
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}
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else {
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func = None;
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seq = args;
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}
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/* check for special cases; strings and tuples are returned as same */
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if (is_stringobject(seq)) {
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object *r = filterstring(func, seq);
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if (newfunc)
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DECREF(func);
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return r;
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}
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else if (is_tupleobject(seq)) {
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object *r = filtertuple(func, seq);
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if (newfunc)
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DECREF(func);
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return r;
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}
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if (! (sqf = seq->ob_type->tp_as_sequence)) {
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err_setstr(TypeError,
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"argument to bagof() must be a sequence type");
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goto Fail_2;
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}
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if ((len = (*sqf->sq_length)(seq)) < 0)
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goto Fail_2;
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if (is_listobject(seq) && seq->ob_refcnt == 1) {
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INCREF(seq);
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result = seq;
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}
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else
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if ((result = newlistobject(len)) == NULL)
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goto Fail_2;
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if ((arg = newtupleobject(1)) == NULL)
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goto Fail_1;
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for (i = j = 0; i < len; ++i) {
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object *ele, *value;
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if (arg->ob_refcnt > 1) {
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DECREF(arg);
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if ((arg = newtupleobject(1)) == NULL)
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goto Fail_1;
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}
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if ((ele = (*sqf->sq_item)(seq, i)) == NULL)
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goto Fail_0;
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if (func == None)
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value = ele;
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else {
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if (settupleitem(arg, 0, ele) < 0)
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goto Fail_0;
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if ((value = call_object(func, arg)) == NULL)
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goto Fail_0;
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}
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if (testbool(value)) {
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INCREF(ele);
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if (setlistitem(result, j++, ele) < 0)
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goto Fail_0;
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}
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DECREF(value);
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}
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/* list_ass_slice() expects the rest of the list to be non-null */
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for (i = j; i < len; ++i) {
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INCREF(None);
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if (setlistitem(result, i, None) < 0)
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goto Fail_0;
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}
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DECREF(arg);
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if (newfunc)
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DECREF(func);
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(*result->ob_type->tp_as_sequence->sq_ass_slice)(result, j, len, NULL);
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return result;
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Fail_0:
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DECREF(arg);
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Fail_1:
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DECREF(result);
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Fail_2:
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if (newfunc)
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DECREF(func);
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return NULL;
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}
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static object *
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builtin_chr(self, args)
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object *self;
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@ -191,6 +322,7 @@ exec_eval(v, start)
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object *str = NULL, *globals = NULL, *locals = NULL;
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char *s;
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int n;
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/* XXX This is a bit of a mess. Should make it varargs */
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if (v != NULL) {
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if (is_tupleobject(v) &&
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((n = gettuplesize(v)) == 2 || n == 3)) {
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@ -206,9 +338,10 @@ exec_eval(v, start)
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globals != NULL && !is_dictobject(globals) ||
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locals != NULL && !is_dictobject(locals)) {
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err_setstr(TypeError,
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"exec/eval arguments must be (string|code)[,dict[,dict]]");
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"eval/lambda arguments must be (string|code)[,dict[,dict]]");
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return NULL;
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}
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/* XXX The following is only correct for eval(), not for lambda() */
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if (is_codeobject(str))
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return eval_code((codeobject *) str, globals, locals,
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(object *)NULL, (object *)NULL);
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@ -217,7 +350,7 @@ exec_eval(v, start)
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err_setstr(ValueError, "embedded '\\0' in string arg");
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return NULL;
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}
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if (start == eval_input) {
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if (start == eval_input || start == lambda_input) {
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while (*s == ' ' || *s == '\t')
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s++;
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}
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@ -335,6 +468,136 @@ builtin_id(self, args)
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return newintobject((long)v);
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}
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static object *
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builtin_map(self, args)
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object *self;
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object *args;
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{
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typedef struct {
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object *seq;
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sequence_methods *sqf;
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int len;
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} sequence;
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object *func, *result;
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sequence *seqs = NULL, *sqp;
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int n, len, newfunc = 0;
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register int i, j;
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if (args == NULL || !is_tupleobject(args)) {
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err_setstr(TypeError, "map() requires at least two args");
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return NULL;
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}
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func = gettupleitem(args, 0);
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n = gettuplesize(args) - 1;
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if (is_stringobject(func)) {
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if ((func = exec_eval(func, lambda_input)) == NULL)
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return NULL;
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newfunc = 1;
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}
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if ((seqs = (sequence *) malloc(n * sizeof(sequence))) == NULL)
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return err_nomem();
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for (len = -1, i = 0, sqp = seqs; i < n; ++i, ++sqp) {
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int curlen;
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if ((sqp->seq = gettupleitem(args, i + 1)) == NULL)
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goto Fail_2;
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if (! (sqp->sqf = sqp->seq->ob_type->tp_as_sequence)) {
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static char errmsg[] =
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"argument %d to map() must be a sequence object";
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char errbuf[sizeof(errmsg) + 3];
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sprintf(errbuf, errmsg, i+2);
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err_setstr(TypeError, errbuf);
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goto Fail_2;
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}
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if ((curlen = sqp->len = (*sqp->sqf->sq_length)(sqp->seq)) < 0)
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goto Fail_2;
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if (curlen > len)
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len = curlen;
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}
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if ((result = (object *) newlistobject(len)) == NULL)
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goto Fail_2;
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if ((args = newtupleobject(n)) == NULL)
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goto Fail_1;
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for (i = 0; i < len; ++i) {
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object *arg, *value;
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if (args->ob_refcnt > 1) {
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DECREF(args);
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if ((args = newtupleobject(n)) == NULL)
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goto Fail_1;
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}
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for (j = 0, sqp = seqs; j < n; ++j, ++sqp) {
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if (i >= sqp->len) {
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INCREF(None);
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if (settupleitem(args, j, None) < 0)
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goto Fail_0;
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arg = None;
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}
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else {
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if ((arg = (*sqp->sqf->sq_item)(sqp->seq, i)) == NULL)
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goto Fail_0;
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if (settupleitem(args, j, arg) < 0)
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goto Fail_0;
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}
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}
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if (func == None) {
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if (n == 1) { /* avoid creating singleton */
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INCREF(arg);
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if (setlistitem(result, i, arg) < 0)
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goto Fail_0;
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}
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else {
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INCREF(args);
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if (setlistitem(result, i, args) < 0)
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goto Fail_0;
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}
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}
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else {
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if ((value = call_object(func, args)) == NULL)
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goto Fail_0;
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if (setlistitem((object *) result, i, value) < 0)
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goto Fail_0;
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}
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}
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if (seqs) free(seqs);
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DECREF(args);
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if (newfunc)
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DECREF(func);
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return result;
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Fail_0:
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DECREF(args);
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Fail_1:
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DECREF(result);
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Fail_2:
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if (newfunc)
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DECREF(func);
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if (seqs) free(seqs);
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return NULL;
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}
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static object *
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builtin_setattr(self, args)
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object *self;
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@ -413,6 +676,14 @@ builtin_int(self, v)
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return (*nb->nb_int)(v);
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}
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static object *
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builtin_lambda(self, v)
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object *self;
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object *v;
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{
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return exec_eval(v, lambda_input);
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}
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static object *
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builtin_len(self, v)
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object *self;
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@ -640,6 +911,58 @@ builtin_range(self, v)
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return v;
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}
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static object *
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builtin_xrange(self, v)
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object *self;
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object *v;
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{
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static char *errmsg = "xrange() requires 1-3 int arguments";
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int i, n;
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long start, stop, step, len;
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if (v != NULL && is_intobject(v))
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start = 0, stop = getintvalue(v), step = 1;
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else if (v == NULL || !is_tupleobject(v)) {
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err_setstr(TypeError, errmsg);
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return NULL;
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}
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else {
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n = gettuplesize(v);
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if (n < 1 || n > 3) {
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err_setstr(TypeError, errmsg);
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return NULL;
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}
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for (i = 0; i < n; i++) {
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if (!is_intobject(gettupleitem(v, i))) {
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err_setstr(TypeError, errmsg);
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return NULL;
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}
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}
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if (n == 3) {
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step = getintvalue(gettupleitem(v, 2));
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--n;
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}
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else
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step = 1;
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stop = getintvalue(gettupleitem(v, --n));
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if (n > 0)
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start = getintvalue(gettupleitem(v, 0));
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else
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start = 0;
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}
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if (step == 0) {
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err_setstr(ValueError, "zero step for xrange()");
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return NULL;
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}
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len = (stop - start + step + ((step > 0) ? -1 : 1)) / step;
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if (len < 0)
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len = 0;
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return newrangeobject(start, len, step, 1);
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}
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static object *
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builtin_raw_input(self, v)
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object *self;
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@ -658,6 +981,103 @@ builtin_raw_input(self, v)
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return filegetline(sysget("stdin"), -1);
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}
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static object *
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builtin_reduce(self, args)
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object *self;
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object *args;
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{
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object *seq, *func, *result;
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sequence_methods *sqf;
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static char reduce_err[] = "reduce() requires 2 or 3 args";
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register int i;
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int start = 0, newfunc = 0;
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int len;
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if (args == NULL || !is_tupleobject(args)) {
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err_setstr(TypeError, reduce_err);
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return NULL;
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}
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|
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switch (gettuplesize(args)) {
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case 2:
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start = 1; /* fall through */
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case 3:
|
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func = gettupleitem(args, 0);
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seq = gettupleitem(args, 1);
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break;
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default:
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err_setstr(TypeError, reduce_err);
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}
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|
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if ((sqf = seq->ob_type->tp_as_sequence) == NULL) {
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err_setstr(TypeError,
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"2nd argument to reduce() must be a sequence object");
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return NULL;
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}
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|
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if (is_stringobject(func)) {
|
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if ((func = exec_eval(func, lambda_input)) == NULL)
|
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return NULL;
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newfunc = 1;
|
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}
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|
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if ((len = (*sqf->sq_length)(seq)) < 0)
|
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goto Fail_2;
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|
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if (start == 1) {
|
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if (len == 0) {
|
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err_setstr(TypeError,
|
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"reduce of empty sequence with no initial value");
|
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goto Fail_2;
|
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}
|
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|
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if ((result = (*sqf->sq_item)(seq, 0)) == NULL)
|
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goto Fail_2;
|
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}
|
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else {
|
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result = gettupleitem(args, 2);
|
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INCREF(result);
|
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}
|
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|
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if ((args = newtupleobject(2)) == NULL)
|
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goto Fail_1;
|
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|
||||
for (i = start; i < len; ++i) {
|
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object *op2;
|
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|
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if (args->ob_refcnt > 1) {
|
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DECREF(args);
|
||||
if ((args = newtupleobject(2)) == NULL)
|
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goto Fail_1;
|
||||
}
|
||||
|
||||
if ((op2 = (*sqf->sq_item)(seq, i)) == NULL)
|
||||
goto Fail_2;
|
||||
|
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settupleitem(args, 0, result);
|
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settupleitem(args, 1, op2);
|
||||
if ((result = call_object(func, args)) == NULL)
|
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goto Fail_0;
|
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}
|
||||
|
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DECREF(args);
|
||||
if (newfunc)
|
||||
DECREF(func);
|
||||
|
||||
return result;
|
||||
|
||||
/* XXX I hate goto's. I hate goto's. I hate goto's. I hate goto's. */
|
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Fail_0:
|
||||
DECREF(args);
|
||||
goto Fail_2;
|
||||
Fail_1:
|
||||
DECREF(result);
|
||||
Fail_2:
|
||||
if (newfunc)
|
||||
DECREF(func);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static object *
|
||||
builtin_reload(self, v)
|
||||
object *self;
|
||||
|
@ -740,6 +1160,7 @@ builtin_type(self, v)
|
|||
static struct methodlist builtin_methods[] = {
|
||||
{"abs", builtin_abs},
|
||||
{"apply", builtin_apply},
|
||||
{"bagof", builtin_bagof},
|
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{"chr", builtin_chr},
|
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{"cmp", builtin_cmp},
|
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{"coerce", builtin_coerce},
|
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|
@ -756,8 +1177,10 @@ static struct methodlist builtin_methods[] = {
|
|||
{"id", builtin_id},
|
||||
{"input", builtin_input},
|
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{"int", builtin_int},
|
||||
{"lambda", builtin_lambda},
|
||||
{"len", builtin_len},
|
||||
{"long", builtin_long},
|
||||
{"map", builtin_map},
|
||||
{"max", builtin_max},
|
||||
{"min", builtin_min},
|
||||
{"oct", builtin_oct},
|
||||
|
@ -766,12 +1189,14 @@ static struct methodlist builtin_methods[] = {
|
|||
{"pow", builtin_pow},
|
||||
{"range", builtin_range},
|
||||
{"raw_input", builtin_raw_input},
|
||||
{"reduce", builtin_reduce},
|
||||
{"reload", builtin_reload},
|
||||
{"repr", builtin_repr},
|
||||
{"round", builtin_round},
|
||||
{"setattr", builtin_setattr},
|
||||
{"str", builtin_str},
|
||||
{"type", builtin_type},
|
||||
{"xrange", builtin_xrange},
|
||||
{NULL, NULL},
|
||||
};
|
||||
|
||||
|
@ -883,3 +1308,155 @@ coerce(pv, pw)
|
|||
err_setstr(TypeError, "number coercion failed");
|
||||
return -1;
|
||||
}
|
||||
|
||||
|
||||
/* Filter a tuple through a function */
|
||||
|
||||
static object *
|
||||
filtertuple(func, tuple)
|
||||
object *func;
|
||||
object *tuple;
|
||||
{
|
||||
object *arg, *result;
|
||||
register int i, j;
|
||||
int len = gettuplesize(tuple), shared = 0;
|
||||
|
||||
if (tuple->ob_refcnt == 1) {
|
||||
result = tuple;
|
||||
shared = 1;
|
||||
/* defer INCREF (resizetuple wants it to be one) */
|
||||
}
|
||||
else
|
||||
if ((result = newtupleobject(len)) == NULL)
|
||||
return NULL;
|
||||
|
||||
if ((arg = newtupleobject(1)) == NULL)
|
||||
goto Fail_1;
|
||||
|
||||
for (i = j = 0; i < len; ++i) {
|
||||
object *ele, *value;
|
||||
|
||||
if (arg->ob_refcnt > 1) {
|
||||
DECREF(arg);
|
||||
if ((arg = newtupleobject(1)) == NULL)
|
||||
goto Fail_1;
|
||||
}
|
||||
|
||||
if ((ele = gettupleitem(tuple, i)) == NULL)
|
||||
goto Fail_0;
|
||||
INCREF(ele);
|
||||
|
||||
if (func == None)
|
||||
value = ele;
|
||||
else {
|
||||
if (settupleitem(arg, 0, ele) < 0)
|
||||
goto Fail_0;
|
||||
|
||||
if ((value = call_object(func, arg)) == NULL)
|
||||
goto Fail_0;
|
||||
}
|
||||
|
||||
if (testbool(value)) {
|
||||
INCREF(ele);
|
||||
if (settupleitem(result, j++, ele) < 0)
|
||||
goto Fail_0;
|
||||
}
|
||||
|
||||
DECREF(value);
|
||||
}
|
||||
|
||||
DECREF(arg);
|
||||
if (resizetuple(&result, j) < 0)
|
||||
return NULL;
|
||||
|
||||
if (shared)
|
||||
INCREF(result);
|
||||
|
||||
return result;
|
||||
|
||||
Fail_0:
|
||||
DECREF(arg);
|
||||
Fail_1:
|
||||
if (!shared)
|
||||
DECREF(result);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
|
||||
/* Filter a string through a function */
|
||||
|
||||
static object *
|
||||
filterstring(func, strobj)
|
||||
object *func;
|
||||
object *strobj;
|
||||
{
|
||||
object *arg, *result;
|
||||
register int i, j;
|
||||
int len = getstringsize(strobj), shared = 0;
|
||||
|
||||
if (strobj->ob_refcnt == 1) {
|
||||
result = strobj;
|
||||
shared = 1;
|
||||
/* defer INCREF (resizestring wants it to be one) */
|
||||
|
||||
if (func == None) {
|
||||
INCREF(result);
|
||||
return result;
|
||||
}
|
||||
}
|
||||
else {
|
||||
if ((result = newsizedstringobject(NULL, len)) == NULL)
|
||||
return NULL;
|
||||
|
||||
if (func == None) {
|
||||
strcpy(GETSTRINGVALUE((stringobject *)result),
|
||||
GETSTRINGVALUE((stringobject *)strobj));
|
||||
return result;
|
||||
}
|
||||
}
|
||||
|
||||
if ((arg = newtupleobject(1)) == NULL)
|
||||
goto Fail_1;
|
||||
|
||||
for (i = j = 0; i < len; ++i) {
|
||||
object *ele, *value;
|
||||
|
||||
if (arg->ob_refcnt > 1) {
|
||||
DECREF(arg);
|
||||
if ((arg = newtupleobject(1)) == NULL)
|
||||
goto Fail_1;
|
||||
}
|
||||
|
||||
if ((ele = (*strobj->ob_type->tp_as_sequence->sq_item)
|
||||
(strobj, i)) == NULL)
|
||||
goto Fail_0;
|
||||
|
||||
if (settupleitem(arg, 0, ele) < 0)
|
||||
goto Fail_0;
|
||||
|
||||
if ((value = call_object(func, arg)) == NULL)
|
||||
goto Fail_0;
|
||||
|
||||
if (testbool(value))
|
||||
GETSTRINGVALUE((stringobject *)result)[j++] =
|
||||
GETSTRINGVALUE((stringobject *)ele)[0];
|
||||
|
||||
DECREF(value);
|
||||
}
|
||||
|
||||
DECREF(arg);
|
||||
if (resizestring(&result, j) < 0)
|
||||
return NULL;
|
||||
|
||||
if (shared)
|
||||
INCREF(result);
|
||||
|
||||
return result;
|
||||
|
||||
Fail_0:
|
||||
DECREF(arg);
|
||||
Fail_1:
|
||||
if (!shared)
|
||||
DECREF(result);
|
||||
return NULL;
|
||||
}
|
||||
|
|
|
@ -164,6 +164,7 @@ struct compiling {
|
|||
int c_nexti; /* index into c_code */
|
||||
int c_errors; /* counts errors occurred */
|
||||
int c_infunction; /* set when compiling a function */
|
||||
int c_inlambda; /* set when compiling an expression */
|
||||
int c_loops; /* counts nested loops */
|
||||
int c_begin; /* begin of current loop, for 'continue' */
|
||||
int c_block[MAXBLOCKS]; /* stack of block types */
|
||||
|
@ -205,7 +206,7 @@ block_pop(c, type)
|
|||
|
||||
/* Prototypes */
|
||||
|
||||
static int com_init PROTO((struct compiling *, char *));
|
||||
static int com_init PROTO((struct compiling *, char *, int));
|
||||
static void com_free PROTO((struct compiling *));
|
||||
static void com_done PROTO((struct compiling *));
|
||||
static void com_node PROTO((struct compiling *, struct _node *));
|
||||
|
@ -221,9 +222,10 @@ static void com_addopname PROTO((struct compiling *, int, node *));
|
|||
static void com_list PROTO((struct compiling *, node *, int));
|
||||
|
||||
static int
|
||||
com_init(c, filename)
|
||||
com_init(c, filename, inlambda)
|
||||
struct compiling *c;
|
||||
char *filename;
|
||||
int inlambda;
|
||||
{
|
||||
if ((c->c_code = newsizedstringobject((char *)NULL, 1000)) == NULL)
|
||||
goto fail_3;
|
||||
|
@ -236,6 +238,7 @@ com_init(c, filename)
|
|||
c->c_nexti = 0;
|
||||
c->c_errors = 0;
|
||||
c->c_infunction = 0;
|
||||
c->c_inlambda = inlambda;
|
||||
c->c_loops = 0;
|
||||
c->c_begin = 0;
|
||||
c->c_nblocks = 0;
|
||||
|
@ -1792,7 +1795,7 @@ com_funcdef(c, n)
|
|||
{
|
||||
object *v;
|
||||
REQ(n, funcdef); /* funcdef: 'def' NAME parameters ':' suite */
|
||||
v = (object *)compile(n, c->c_filename);
|
||||
v = (object *)_compile(n, c->c_filename, 0);
|
||||
if (v == NULL)
|
||||
c->c_errors++;
|
||||
else {
|
||||
|
@ -1804,6 +1807,25 @@ com_funcdef(c, n)
|
|||
}
|
||||
}
|
||||
|
||||
static void
|
||||
com_lambda(c, n)
|
||||
struct compiling *c;
|
||||
node *n;
|
||||
{
|
||||
object *v;
|
||||
REQ(n, lambda_input);
|
||||
v = (object *)_compile(n, c->c_filename, 1);
|
||||
if (v == NULL)
|
||||
c->c_errors++;
|
||||
else {
|
||||
int i = com_addconst(c, v);
|
||||
DECREF(v);
|
||||
com_addoparg(c, LOAD_CONST, i);
|
||||
com_addbyte(c, BUILD_FUNCTION);
|
||||
com_addbyte(c, RETURN_VALUE);
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
com_bases(c, n)
|
||||
struct compiling *c;
|
||||
|
@ -1839,7 +1861,7 @@ com_classdef(c, n)
|
|||
com_addoparg(c, BUILD_TUPLE, 0);
|
||||
else
|
||||
com_bases(c, CHILD(n, 3));
|
||||
v = (object *)compile(n, c->c_filename);
|
||||
v = (object *)_compile(n, c->c_filename, 0);
|
||||
if (v == NULL)
|
||||
c->c_errors++;
|
||||
else {
|
||||
|
@ -2096,6 +2118,17 @@ compile_funcdef(c, n)
|
|||
com_addbyte(c, RETURN_VALUE);
|
||||
}
|
||||
|
||||
static void
|
||||
compile_lambda(c, n)
|
||||
struct compiling *c;
|
||||
node *n;
|
||||
{
|
||||
REQ(n, lambda_input)
|
||||
com_arglist(c, CHILD(n, 0));
|
||||
com_node(c, CHILD(n, 2));
|
||||
com_addbyte(c, RETURN_VALUE);
|
||||
}
|
||||
|
||||
static void
|
||||
compile_node(c, n)
|
||||
struct compiling *c;
|
||||
|
@ -2120,12 +2153,11 @@ compile_node(c, n)
|
|||
com_addbyte(c, RETURN_VALUE);
|
||||
break;
|
||||
|
||||
case expr_input: /* Built-in function eval() */
|
||||
com_node(c, CHILD(n, 0));
|
||||
com_addbyte(c, RETURN_VALUE);
|
||||
case lambda_input: /* Built-in function lambda() */
|
||||
(c->c_inlambda ? compile_lambda : com_lambda)(c, n);
|
||||
break;
|
||||
|
||||
case eval_input: /* Built-in function input() */
|
||||
case eval_input: /* Built-in functions eval() and input() */
|
||||
com_node(c, CHILD(n, 0));
|
||||
com_addbyte(c, RETURN_VALUE);
|
||||
break;
|
||||
|
@ -2285,13 +2317,14 @@ optimize(c)
|
|||
}
|
||||
|
||||
codeobject *
|
||||
compile(n, filename)
|
||||
_compile(n, filename, inlambda)
|
||||
node *n;
|
||||
char *filename;
|
||||
int inlambda;
|
||||
{
|
||||
struct compiling sc;
|
||||
codeobject *co;
|
||||
if (!com_init(&sc, filename))
|
||||
if (!com_init(&sc, filename, inlambda))
|
||||
return NULL;
|
||||
compile_node(&sc, n);
|
||||
com_done(&sc);
|
||||
|
|
1466
Python/graminit.c
1466
Python/graminit.c
File diff suppressed because it is too large
Load diff
Loading…
Add table
Add a link
Reference in a new issue