adding (for lo hi f) construct, changing library funcs to use it
setting license to CPL v1
This commit is contained in:
JeffBezanson
parent
60644c760e
commit
e08091e4a1
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@ -0,0 +1,214 @@
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|||
Common Public License Version 1.0
|
||||
Fri, 2007-06-01 17:16 — nelson
|
||||
|
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THE ACCOMPANYING PROGRAM IS PROVIDED UNDER THE TERMS OF THIS COMMON PUBLIC
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@ -130,7 +130,7 @@ value_t cvalue_from_data(value_t type, void *data, size_t sz)
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// ptr is user-managed; we don't autorelease it unless the
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// user explicitly calls (autorelease ) on the result of this function.
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// 'parent' is an optional cvalue that this pointer is known to point
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// into; UNBOUND if none.
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// into; NIL if none.
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value_t cvalue_from_ref(value_t type, void *ptr, size_t sz, value_t parent)
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{
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cvalue_t *pcv;
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@ -146,7 +146,7 @@ value_t cvalue_from_ref(value_t type, void *ptr, size_t sz, value_t parent)
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pcv->deps = NIL;
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pcv->type = POP();
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parent = POP();
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if (parent != UNBOUND) {
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if (parent != NIL) {
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// TODO: add dependency
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}
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cv = tagptr(pcv, TAG_BUILTIN);
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@ -178,7 +178,7 @@ value_t cvalue_string(size_t sz)
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value_t cvalue_pinned_cstring(char *str)
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{
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value_t v = cvalue_from_ref(symbol_value(stringtypesym), str, strlen(str),
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UNBOUND);
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NIL);
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((cvalue_t*)ptr(v))->flags.cstring = 1;
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return v;
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}
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@ -20,17 +20,6 @@
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* read macros for backquote
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* symbol character-escaping printer
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* new print algorithm
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1. traverse & tag all conses to be printed. when you encounter a cons
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that is already tagged, add it to a table to give it a #n# index
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2. untag a cons when printing it. if cons is in the table, print
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"#n=" before it in the car, " . #n=" in the cdr. if cons is in the
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table but already untagged, print #n# in car or " . #n#" in the cdr.
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* read macros for #n# and #n= using the same kind of table
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* also need a table of read labels to translate from input indexes to
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normalized indexes (0 for first label, 1 for next, etc.)
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* read macro #. for eval-when-read. use for printing builtins, e.g. "#.eq"
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The value of this extra complexity, and what makes this fork worthy of
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the femtoLisp brand, is that the interpreter is fully "closed" in the
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sense that all representable values can be read and printed.
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@ -48,8 +37,8 @@
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* strings
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- hash tables
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by Jeff Bezanson
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Public Domain
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by Jeff Bezanson (C) 2008
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Distributed under the Common Public License v1.0
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*/
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#include <stdlib.h>
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@ -76,7 +65,8 @@ static char *builtin_names[] =
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"cons", "car", "cdr", "rplaca", "rplacd",
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"eval", "apply", "set", "prog1", "raise",
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"+", "-", "*", "/", "<", "~", "&", "!", "$",
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"vector", "aref", "aset", "length", "assoc", "compare" };
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"vector", "aref", "aset", "length", "assoc", "compare",
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"for" };
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static char *stack_bottom;
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#define PROCESS_STACK_SIZE (2*1024*1024)
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@ -651,7 +641,7 @@ static value_t eval_sexpr(value_t e, uint32_t penv, int tail)
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symbol_t *sym;
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uint32_t saveSP, envsz, lenv;
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int i, nargs, noeval=0;
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fixnum_t s;
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fixnum_t s, lo, hi;
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cvalue_t *cv;
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int64_t accum;
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@ -1144,12 +1134,34 @@ static value_t eval_sexpr(value_t e, uint32_t penv, int tail)
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argcount("assoc", nargs, 2);
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v = assoc(Stack[SP-2], Stack[SP-1]);
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break;
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case F_FOR:
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argcount("for", nargs, 3);
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lo = tofixnum(Stack[SP-3], "for");
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hi = tofixnum(Stack[SP-2], "for");
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f = Stack[SP-1];
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v = car(cdr(f));
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if (!iscons(v) || !iscons(cdr_(cdr_(f))) ||
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cdr_(v) != NIL)
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lerror(ArgError, "for: expected 1 argument lambda");
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f = cdr_(f);
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PUSH(f); // save function cdr
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SP += 4; // make space
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Stack[SP-4] = fixnum(3); // env size
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Stack[SP-1] = cdr_(cdr_(f)); // cloenv
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for(s=lo; s <= hi; s++) {
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f = Stack[SP-5];
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Stack[SP-3] = car_(f); // lambda list
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Stack[SP-2] = fixnum(s); // argument value
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v = eval_sexpr(car_(cdr_(f)), SP-3, 0);
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}
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break;
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case F_SPECIAL_APPLY:
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v = Stack[saveSP-4];
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f = Stack[saveSP-5];
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PUSH(f);
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PUSH(v);
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nargs = 2;
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// falls through!!
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case F_APPLY:
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argcount("apply", nargs, 2);
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v = Stack[saveSP] = Stack[SP-1]; // second arg is new arglist
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@ -86,7 +86,7 @@ enum {
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F_CONS, F_CAR, F_CDR, F_RPLACA, F_RPLACD,
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F_EVAL, F_APPLY, F_SET, F_PROG1, F_RAISE,
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F_ADD, F_SUB, F_MUL, F_DIV, F_LT, F_BNOT, F_BAND, F_BOR, F_BXOR,
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F_VECTOR, F_AREF, F_ASET, F_LENGTH, F_ASSOC, F_COMPARE,
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F_VECTOR, F_AREF, F_ASET, F_LENGTH, F_ASSOC, F_COMPARE, F_FOR,
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N_BUILTINS
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};
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#define isspecial(v) (uintval(v) <= (unsigned int)F_PROGN)
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@ -1,6 +1,6 @@
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; femtoLisp standard library
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; by Jeff Bezanson
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; Public Domain
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; by Jeff Bezanson (C) 2008
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; Distributed under the Common Public License v1.0
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(set 'list (lambda args args))
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@ -269,22 +269,23 @@
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(defmacro dotimes (var . body)
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(let ((v (car var))
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(cnt (cadr var)))
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(list 'let (list (list v 0))
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(list 'while (list < v cnt)
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(list prog1 (f-body body) (list 'setq v (list + v 1)))))))
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(cnt (cadr var))
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(lim (gensym)))
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`(let ((,lim (- ,cnt 1)))
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(for 0 ,lim
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(lambda (,v) ,(f-body body))))))
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(defun map-int (f n)
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(if (<= n 0)
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()
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(let ((first (cons (f 0) nil)))
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((label map-int-
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(lambda (acc i n)
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(if (= i n)
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first
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(let ((first (cons (f 0) nil))
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(acc nil))
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(setq acc first)
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(for 1 (- n 1)
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(lambda (i)
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(progn (rplacd acc (cons (f i) nil))
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(map-int- (cdr acc) (+ i 1) n)))))
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first 1 n))))
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(setq acc (cdr acc)))))
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first)))
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(defun iota (n) (map-int identity n))
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@ -403,11 +404,11 @@
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(defun list-to-vector (l) (apply vector l))
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(defun vector-to-list (v)
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(let ((i (- (length v) 1))
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(let ((n (length v))
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(l nil))
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(while (>= i 0)
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(setq l (cons (aref v i) l))
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(setq i (- i 1)))
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(for 1 n
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(lambda (i)
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(setq l (cons (aref v (- n i)) l))))
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l))
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(defun self-evaluating-p (x)
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@ -57,6 +57,18 @@
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,(f-body body)
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(setq ,v (+ ,v 1)))))))
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(defun map-int (f n)
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(if (<= n 0)
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()
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(let ((first (cons (f 0) nil)))
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((label map-int-
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(lambda (acc i n)
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(if (= i n)
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first
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(progn (rplacd acc (cons (f i) nil))
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(map-int- (cdr acc) (+ i 1) n)))))
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first 1 n))))
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(defmacro labl (name fn)
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`((lambda (,name) (setq ,name ,fn)) nil))
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|
|
@ -122,6 +122,7 @@ for internal use:
|
|||
and a more efficient apply() entry point
|
||||
. disadvantage is looking through the lambda list on every lookup. maybe
|
||||
improve by making lambda lists vectors somehow?
|
||||
* fast builtin bounded iteration construct (for lo hi (lambda (x) ...))
|
||||
|
||||
bugs:
|
||||
* with the fully recursive (simpler) relocate(), the size of cons chains
|
||||
|
|
@ -830,6 +831,19 @@ IOStream API
|
|||
*rand.uint64
|
||||
*rand.double
|
||||
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
* new print algorithm
|
||||
1. traverse & tag all conses to be printed. when you encounter a cons
|
||||
that is already tagged, add it to a table to give it a #n# index
|
||||
2. untag a cons when printing it. if cons is in the table, print
|
||||
"#n=" before it in the car, " . #n=" in the cdr. if cons is in the
|
||||
table but already untagged, print #n# in car or " . #n#" in the cdr.
|
||||
* read macros for #n# and #n= using the same kind of table
|
||||
* also need a table of read labels to translate from input indexes to
|
||||
normalized indexes (0 for first label, 1 for next, etc.)
|
||||
* read macro #. for eval-when-read. use for printing builtins, e.g. "#.eq"
|
||||
|
||||
-----------------------------------------------------------------------------
|
||||
|
||||
prettyprint notes
|
||||
|
|
|
|||
Loading…
Reference in New Issue