altos/scheme: Support scheme subsetting via feature settings

[fw/altos] / src / scheme / ao_scheme_builtin.c

diff --git a/src/scheme/ao_scheme_builtin.c b/src/scheme/ao_scheme_builtin.c
index 1754e6777790ecd6176c0eb3d9fd067e2ef7be11..c0f636fa78b58a5592ff97d655d509976a47e8ac 100644 (file)
--- a/src/scheme/ao_scheme_builtin.c
+++ b/src/scheme/ao_scheme_builtin.c
@@ -325,15 +325,22 @@ ao_scheme_math(struct ao_scheme_cons *orig_cons, enum ao_scheme_builtin_id op)
                                case builtin_minus:
                                        if (ao_scheme_integer_typep(ct))
                                                ret = ao_scheme_integer_poly(-ao_scheme_poly_integer(ret));
+#ifdef AO_SCHEME_FEATURE_FLOAT
                                        else if (ct == AO_SCHEME_FLOAT)
                                                ret = ao_scheme_float_get(-ao_scheme_poly_number(ret));
+#endif
                                        break;
                                case builtin_divide:
-                                       if (ao_scheme_integer_typep(ct) && ao_scheme_poly_integer(ret) == 1)
-                                               ;
-                                       else if (ao_scheme_number_typep(ct)) {
-                                               float   v = ao_scheme_poly_number(ret);
-                                               ret = ao_scheme_float_get(1/v);
+                                       if (ao_scheme_integer_typep(ct) && ao_scheme_poly_integer(ret) == 1) {
+                                       } else {
+#ifdef AO_SCHEME_FEATURE_FLOAT
+                                               if (ao_scheme_number_typep(ct)) {
+                                                       float   v = ao_scheme_poly_number(ret);
+                                                       ret = ao_scheme_float_get(1/v);
+                                               }
+#else
+                                               ret = ao_scheme_integer_poly(0);
+#endif
                                        }
                                        break;
                                default:
@@ -344,30 +351,42 @@ ao_scheme_math(struct ao_scheme_cons *orig_cons, enum ao_scheme_builtin_id op)
                } else if (ao_scheme_integer_typep(rt) && ao_scheme_integer_typep(ct)) {
                        int32_t r = ao_scheme_poly_integer(ret);
                        int32_t c = ao_scheme_poly_integer(car);
+#ifdef AO_SCHEME_FEATURE_FLOAT
                        int64_t t;
+#endif
 
                        switch(op) {
                        case builtin_plus:
                                r += c;
                        check_overflow:
+#ifdef AO_SCHEME_FEATURE_FLOAT
                                if (r < AO_SCHEME_MIN_BIGINT || AO_SCHEME_MAX_BIGINT < r)
                                        goto inexact;
+#endif
                                break;
                        case builtin_minus:
                                r -= c;
                                goto check_overflow;
                                break;
                        case builtin_times:
+#ifdef AO_SCHEME_FEATURE_FLOAT
                                t = (int64_t) r * (int64_t) c;
                                if (t < AO_SCHEME_MIN_BIGINT || AO_SCHEME_MAX_BIGINT < t)
                                        goto inexact;
                                r = (int32_t) t;
+#else
+                               r = r * c;
+#endif
                                break;
                        case builtin_divide:
+#ifdef AO_SCHEME_FEATURE_FLOAT
                                if (c != 0 && (r % c) == 0)
                                        r /= c;
                                else
                                        goto inexact;
+#else
+                               r /= c;
+#endif
                                break;
                        case builtin_quotient:
                                if (c == 0)
@@ -395,6 +414,7 @@ ao_scheme_math(struct ao_scheme_cons *orig_cons, enum ao_scheme_builtin_id op)
                        ao_scheme_cons_stash(0, cons);
                        ret = ao_scheme_integer_poly(r);
                        cons = ao_scheme_cons_fetch(0);
+#ifdef AO_SCHEME_FEATURE_FLOAT
                } else if (ao_scheme_number_typep(rt) && ao_scheme_number_typep(ct)) {
                        float r, c;
                inexact:
@@ -423,6 +443,7 @@ ao_scheme_math(struct ao_scheme_cons *orig_cons, enum ao_scheme_builtin_id op)
                        ao_scheme_cons_stash(0, cons);
                        ret = ao_scheme_float_get(r);
                        cons = ao_scheme_cons_fetch(0);
+#endif
                }
                else if (rt == AO_SCHEME_STRING && ct == AO_SCHEME_STRING && op == builtin_plus) {
                        ao_scheme_cons_stash(0, cons);
@@ -839,6 +860,7 @@ ao_scheme_do_pairp(struct ao_scheme_cons *cons)
 ao_poly
 ao_scheme_do_integerp(struct ao_scheme_cons *cons)
 {
+#ifdef AO_SCHEME_FEATURE_BIGINT
        if (!ao_scheme_check_argc(_ao_scheme_atom_led, cons, 1, 1))
                return AO_SCHEME_NIL;
        switch (ao_scheme_poly_type(ao_scheme_arg(cons, 0))) {
@@ -848,21 +870,32 @@ ao_scheme_do_integerp(struct ao_scheme_cons *cons)
        default:
                return _ao_scheme_bool_false;
        }
+#else
+       return ao_scheme_do_typep(AO_SCHEME_INT, cons);
+#endif
 }
 
 ao_poly
 ao_scheme_do_numberp(struct ao_scheme_cons *cons)
 {
+#if defined(AO_SCHEME_FEATURE_BIGINT) || defined(AO_SCHEME_FEATURE_FLOAT)
        if (!ao_scheme_check_argc(_ao_scheme_atom_led, cons, 1, 1))
                return AO_SCHEME_NIL;
        switch (ao_scheme_poly_type(ao_scheme_arg(cons, 0))) {
        case AO_SCHEME_INT:
+#ifdef AO_SCHEME_FEATURE_BIGINT
        case AO_SCHEME_BIGINT:
+#endif
+#ifdef AO_SCHEME_FEATURE_FLOAT
        case AO_SCHEME_FLOAT:
+#endif
                return _ao_scheme_bool_true;
        default:
                return _ao_scheme_bool_false;
        }
+#else
+       return ao_scheme_do_integerp(cons);
+#endif
 }
 
 ao_poly
@@ -1017,6 +1050,8 @@ ao_scheme_do_jiffies_per_second(struct ao_scheme_cons *cons)
        return (ao_scheme_int_poly(AO_SCHEME_JIFFIES_PER_SECOND));
 }
 
+#ifdef AO_SCHEME_FEATURE_VECTOR
+
 ao_poly
 ao_scheme_do_vector(struct ao_scheme_cons *cons)
 {
@@ -1092,5 +1127,7 @@ ao_scheme_do_vectorp(struct ao_scheme_cons *cons)
        return ao_scheme_do_typep(AO_SCHEME_VECTOR, cons);
 }
 
+#endif /* AO_SCHEME_FEATURE_VECTOR */
+
 #define AO_SCHEME_BUILTIN_FUNCS
 #include "ao_scheme_builtin.h"