+++ /dev/null
-/*
- * Copyright © 2016 Keith Packard <keithp@keithp.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- */
-
-#include "ao_lisp.h"
-
-#if 0
-#define DBG(...) printf (__VA_ARGS__)
-#else
-#define DBG(...)
-#endif
-
-struct ao_lisp_funcs {
- void (*print)(ao_poly);
- void (*patom)(ao_poly);
-};
-
-static const struct ao_lisp_funcs ao_lisp_funcs[AO_LISP_NUM_TYPE] = {
- [AO_LISP_CONS] = {
- .print = ao_lisp_cons_print,
- .patom = ao_lisp_cons_patom,
- },
- [AO_LISP_STRING] = {
- .print = ao_lisp_string_print,
- .patom = ao_lisp_string_patom,
- },
- [AO_LISP_INT] = {
- .print = ao_lisp_int_print,
- .patom = ao_lisp_int_print,
- },
- [AO_LISP_ATOM] = {
- .print = ao_lisp_atom_print,
- .patom = ao_lisp_atom_print,
- },
- [AO_LISP_BUILTIN] = {
- .print = ao_lisp_builtin_print,
- .patom = ao_lisp_builtin_print,
- },
- [AO_LISP_FRAME] = {
- .print = ao_lisp_frame_print,
- .patom = ao_lisp_frame_print,
- },
- [AO_LISP_LAMBDA] = {
- .print = ao_lisp_lambda_print,
- .patom = ao_lisp_lambda_print,
- },
- [AO_LISP_STACK] = {
- .print = ao_lisp_stack_print,
- .patom = ao_lisp_stack_print,
- },
-};
-
-static const struct ao_lisp_funcs *
-funcs(ao_poly p)
-{
- uint8_t type = ao_lisp_poly_type(p);
-
- if (type < AO_LISP_NUM_TYPE)
- return &ao_lisp_funcs[type];
- return NULL;
-}
-
-void
-ao_lisp_poly_print(ao_poly p)
-{
- const struct ao_lisp_funcs *f = funcs(p);
-
- if (f && f->print)
- f->print(p);
-}
-
-void
-ao_lisp_poly_patom(ao_poly p)
-{
- const struct ao_lisp_funcs *f = funcs(p);
-
- if (f && f->patom)
- f->patom(p);
-}
-
-void *
-ao_lisp_ref(ao_poly poly) {
- if (poly == AO_LISP_NIL)
- return NULL;
- if (poly & AO_LISP_CONST)
- return (void *) (ao_lisp_const + (poly & AO_LISP_REF_MASK) - 4);
- return (void *) (ao_lisp_pool + (poly & AO_LISP_REF_MASK) - 4);
-}
-
-ao_poly
-ao_lisp_poly(const void *addr, ao_poly type) {
- const uint8_t *a = addr;
- if (a == NULL)
- return AO_LISP_NIL;
- if (AO_LISP_IS_CONST(a))
- return AO_LISP_CONST | (a - ao_lisp_const + 4) | type;
- return (a - ao_lisp_pool + 4) | type;
-}