X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=src%2Flisp%2Fao_lisp_lambda.c;h=526863c508e1187c24a3be251ecb5fcfba294998;hb=97cf9df882291b9e494b2f64f84eb37357a6ab31;hp=8eafb18794baf48cbf5e2f20a3cf7f9f981d9ac0;hpb=7da6bfc195fad97e3afc576c609897c131fd4d8c;p=fw%2Faltos

diff --git a/src/lisp/ao_lisp_lambda.c b/src/lisp/ao_lisp_lambda.c
index 8eafb187..526863c5 100644
--- a/src/lisp/ao_lisp_lambda.c
+++ b/src/lisp/ao_lisp_lambda.c
@@ -15,7 +15,6 @@
  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  */
 
-#define DBG_EVAL 0
 #include "ao_lisp.h"
 
 int
@@ -47,19 +46,9 @@ const struct ao_lisp_type ao_lisp_lambda_type = {
 	.size = lambda_size,
 	.mark = lambda_mark,
 	.move = lambda_move,
+	.name = "lambda",
 };
 
-static int
-ao_lisp_cons_length(struct ao_lisp_cons *cons)
-{
-	int	len = 0;
-	while (cons) {
-		len++;
-		cons = ao_lisp_poly_cons(cons->cdr);
-	}
-	return len;
-}
-
 void
 ao_lisp_lambda_print(ao_poly poly)
 {
@@ -79,15 +68,15 @@ ao_lisp_lambda_print(ao_poly poly)
 ao_poly
 ao_lisp_lambda_alloc(struct ao_lisp_cons *code, int args)
 {
+	ao_lisp_cons_stash(0, code);
 	struct ao_lisp_lambda	*lambda = ao_lisp_alloc(sizeof (struct ao_lisp_lambda));
+	code = ao_lisp_cons_fetch(0);
 	struct ao_lisp_cons	*arg;
 	int			f;
 
 	if (!lambda)
 		return AO_LISP_NIL;
 
-	if (!ao_lisp_check_argc(_ao_lisp_atom_lambda, code, 2, 2))
-		return AO_LISP_NIL;
 	if (!ao_lisp_check_argt(_ao_lisp_atom_lambda, code, 0, AO_LISP_CONS, 1))
 		return AO_LISP_NIL;
 	f = 0;
@@ -102,7 +91,7 @@ ao_lisp_lambda_alloc(struct ao_lisp_cons *code, int args)
 	lambda->type = AO_LISP_LAMBDA;
 	lambda->args = args;
 	lambda->code = ao_lisp_cons_poly(code);
-	lambda->frame = ao_lisp_frame_poly(ao_lisp_frame_current);
+	lambda->frame = ao_lisp_frame_mark(ao_lisp_frame_current);
 	DBGI("build frame: "); DBG_POLY(lambda->frame); DBG("\n");
 	DBG_STACK();
 	return ao_lisp_lambda_poly(lambda);
@@ -142,6 +131,8 @@ ao_lisp_lambda_eval(void)
 	struct ao_lisp_frame	*next_frame;
 	int			args_wanted;
 	int			args_provided;
+	int			f;
+	struct ao_lisp_cons	*vals;
 
 	DBGI("lambda "); DBG_POLY(ao_lisp_lambda_poly(lambda)); DBG("\n");
 
@@ -149,12 +140,14 @@ ao_lisp_lambda_eval(void)
 
 	/* Create a frame to hold the variables
 	 */
-	if (lambda->args == AO_LISP_FUNC_LAMBDA)
-		args_provided = ao_lisp_cons_length(cons) - 1;
-	else
-		args_provided = 1;
-	if (args_wanted != args_provided)
-		return ao_lisp_error(AO_LISP_INVALID, "need %d args, not %d", args_wanted, args_provided);
+	args_provided = ao_lisp_cons_length(cons) - 1;
+	if (lambda->args == AO_LISP_FUNC_LAMBDA) {
+		if (args_wanted != args_provided)
+			return ao_lisp_error(AO_LISP_INVALID, "need %d args, got %d", args_wanted, args_provided);
+	} else {
+		if (args_provided < args_wanted - 1)
+			return ao_lisp_error(AO_LISP_INVALID, "need at least %d args, got %d", args_wanted, args_provided);
+	}
 
 	next_frame = ao_lisp_frame_new(args_wanted);
 
@@ -163,33 +156,41 @@ ao_lisp_lambda_eval(void)
 	cons = ao_lisp_poly_cons(ao_lisp_stack->values);
 	code = ao_lisp_poly_cons(lambda->code);
 	args = ao_lisp_poly_cons(ao_lisp_arg(code, 0));
+	vals = ao_lisp_poly_cons(cons->cdr);
 
-	switch (lambda->args) {
-	case AO_LISP_FUNC_LAMBDA: {
-		int			f;
-		struct ao_lisp_cons	*vals = ao_lisp_poly_cons(cons->cdr);
+	next_frame->prev = lambda->frame;
+	ao_lisp_frame_current = next_frame;
+	ao_lisp_stack->frame = ao_lisp_frame_poly(ao_lisp_frame_current);
 
+	switch (lambda->args) {
+	case AO_LISP_FUNC_LAMBDA:
 		for (f = 0; f < args_wanted; f++) {
 			DBGI("bind "); DBG_POLY(args->car); DBG(" = "); DBG_POLY(vals->car); DBG("\n");
-			next_frame->vals[f].atom = args->car;
-			next_frame->vals[f].val = vals->car;
+			ao_lisp_frame_bind(next_frame, f, args->car, vals->car);
 			args = ao_lisp_poly_cons(args->cdr);
 			vals = ao_lisp_poly_cons(vals->cdr);
 		}
+		if (!ao_lisp_stack_marked(ao_lisp_stack))
+			ao_lisp_cons_free(cons);
+		cons = NULL;
 		break;
-	}
 	case AO_LISP_FUNC_LEXPR:
 	case AO_LISP_FUNC_NLAMBDA:
 	case AO_LISP_FUNC_MACRO:
-		DBGI("bind "); DBG_POLY(args->car); DBG(" = "); DBG_POLY(cons->cdr); DBG("\n");
-		next_frame->vals[0].atom = args->car;
-		next_frame->vals[0].val = cons->cdr;
+		for (f = 0; f < args_wanted - 1; f++) {
+			DBGI("bind "); DBG_POLY(args->car); DBG(" = "); DBG_POLY(vals->car); DBG("\n");
+			ao_lisp_frame_bind(next_frame, f, args->car, vals->car);
+			args = ao_lisp_poly_cons(args->cdr);
+			vals = ao_lisp_poly_cons(vals->cdr);
+		}
+		DBGI("bind "); DBG_POLY(args->car); DBG(" = "); DBG_POLY(ao_lisp_cons_poly(vals)); DBG("\n");
+		ao_lisp_frame_bind(next_frame, f, args->car, ao_lisp_cons_poly(vals));
+		break;
+	default:
 		break;
 	}
-	next_frame->next = lambda->frame;
 	DBGI("eval frame: "); DBG_POLY(ao_lisp_frame_poly(next_frame)); DBG("\n");
-	ao_lisp_frame_current = next_frame;
-	ao_lisp_stack->frame = ao_lisp_frame_poly(ao_lisp_frame_current);
 	DBG_STACK();
-	return ao_lisp_arg(code, 1);
+	DBGI("eval code: "); DBG_POLY(code->cdr); DBG("\n");
+	return code->cdr;
 }