#ifndef _AO_LISP_H_
#define _AO_LISP_H_
-#if !defined(AO_LISP_TEST) && !defined(AO_LISP_MAKE_CONST)
-#include <ao.h>
-#define AO_LISP_ALTOS 1
-#endif
+#define DBG_MEM 0
+#define DBG_EVAL 0
+#define DBG_READ 0
+#define DBG_FREE_CONS 0
+#define NDEBUG 1
#include <stdint.h>
#include <string.h>
-#include <stdio.h>
+#include <ao_lisp_os.h>
+#ifndef __BYTE_ORDER
+#include <endian.h>
+#endif
+
+typedef uint16_t ao_poly;
+typedef int16_t ao_signed_poly;
+
+#ifdef AO_LISP_SAVE
+
+struct ao_lisp_os_save {
+ ao_poly atoms;
+ ao_poly globals;
+ uint16_t const_checksum;
+ uint16_t const_checksum_inv;
+};
+
+#define AO_LISP_POOL_EXTRA (sizeof(struct ao_lisp_os_save))
+#define AO_LISP_POOL ((int) (AO_LISP_POOL_TOTAL - AO_LISP_POOL_EXTRA))
+
+int
+ao_lisp_os_save(void);
+
+int
+ao_lisp_os_restore_save(struct ao_lisp_os_save *save, int offset);
+
+int
+ao_lisp_os_restore(void);
+
+#endif
#ifdef AO_LISP_MAKE_CONST
#define AO_LISP_POOL_CONST 16384
-extern uint8_t ao_lisp_const[AO_LISP_POOL_CONST];
+extern uint8_t ao_lisp_const[AO_LISP_POOL_CONST] __attribute__((aligned(4)));
+#define ao_lisp_pool ao_lisp_const
+#define AO_LISP_POOL AO_LISP_POOL_CONST
+
+#define _atom(n) ao_lisp_atom_poly(ao_lisp_atom_intern(n))
+#define _bool(v) ao_lisp_bool_poly(ao_lisp_bool_get(v))
+
+#define _ao_lisp_bool_true _bool(1)
+#define _ao_lisp_bool_false _bool(0)
+
+#define _ao_lisp_atom_eof _atom("eof")
+#define _ao_lisp_atom_else _atom("else")
+
+#define AO_LISP_BUILTIN_ATOMS
+#include "ao_lisp_builtin.h"
+
#else
#include "ao_lisp_const.h"
+#ifndef AO_LISP_POOL
+#define AO_LISP_POOL 3072
+#endif
+extern uint8_t ao_lisp_pool[AO_LISP_POOL + AO_LISP_POOL_EXTRA] __attribute__((aligned(4)));
#endif
/* Primitive types */
/* These have a type value at the start of the struct */
#define AO_LISP_ATOM 4
#define AO_LISP_BUILTIN 5
-#define AO_LISP_NUM_TYPE 6
+#define AO_LISP_FRAME 6
+#define AO_LISP_FRAME_VALS 7
+#define AO_LISP_LAMBDA 8
+#define AO_LISP_STACK 9
+#define AO_LISP_BOOL 10
+#define AO_LISP_BIGINT 11
+#define AO_LISP_FLOAT 12
+#define AO_LISP_NUM_TYPE 13
+
+/* Leave two bits for types to use as they please */
+#define AO_LISP_OTHER_TYPE_MASK 0x3f
#define AO_LISP_NIL 0
-#define AO_LISP_POOL 1024
-
-extern uint8_t ao_lisp_pool[AO_LISP_POOL];
extern uint16_t ao_lisp_top;
#define AO_LISP_OOM 0x01
#define AO_LISP_DIVIDE_BY_ZERO 0x02
#define AO_LISP_INVALID 0x04
+#define AO_LISP_UNDEFINED 0x08
+#define AO_LISP_REDEFINED 0x10
+#define AO_LISP_EOF 0x20
+#define AO_LISP_EXIT 0x40
extern uint8_t ao_lisp_exception;
-typedef uint16_t ao_poly;
-
-static inline void *
-ao_lisp_ref(ao_poly poly) {
- if (poly == AO_LISP_NIL)
- return NULL;
- if (poly & AO_LISP_CONST)
- return (void *) ((ao_lisp_const - 4) + (poly & AO_LISP_REF_MASK));
- else
- return (void *) ((ao_lisp_pool - 4) + (poly & AO_LISP_REF_MASK));
+static inline int
+ao_lisp_is_const(ao_poly poly) {
+ return poly & AO_LISP_CONST;
}
-static inline ao_poly
-ao_lisp_poly(const void *addr, ao_poly type) {
- const uint8_t *a = addr;
- if (addr == NULL)
- return AO_LISP_NIL;
- if (ao_lisp_pool <= a && a < ao_lisp_pool + AO_LISP_POOL)
- return (a - (ao_lisp_pool - 4)) | type;
- else if (ao_lisp_const <= a && a <= ao_lisp_const + AO_LISP_POOL_CONST)
- return AO_LISP_CONST | (a - (ao_lisp_const - 4)) | type;
- else {
- ao_lisp_exception |= AO_LISP_INVALID;
- return AO_LISP_NIL;
- }
-}
+#define AO_LISP_IS_CONST(a) (ao_lisp_const <= ((uint8_t *) (a)) && ((uint8_t *) (a)) < ao_lisp_const + AO_LISP_POOL_CONST)
+#define AO_LISP_IS_POOL(a) (ao_lisp_pool <= ((uint8_t *) (a)) && ((uint8_t *) (a)) < ao_lisp_pool + AO_LISP_POOL)
+#define AO_LISP_IS_INT(p) (ao_lisp_poly_base_type(p) == AO_LISP_INT)
+
+void *
+ao_lisp_ref(ao_poly poly);
-#define AO_LISP_POLY(addr, type) (((ao_lisp_pool <= ((uint8_t *) (a)) && \
- ((uint8_t *) (a)) < ao_lisp_pool + AO_LISP_POOL) ? \
- ((uint8_t *) (a) - (ao_lisp_pool - 4)) : \
- (((uint8_t *) (a) - (ao_lisp_const - 4)) | AO_LISP_POOL_CONST)) | \
- (type))
+ao_poly
+ao_lisp_poly(const void *addr, ao_poly type);
struct ao_lisp_type {
- void (*mark)(void *addr);
int (*size)(void *addr);
+ void (*mark)(void *addr);
void (*move)(void *addr);
+ char name[];
};
struct ao_lisp_cons {
struct ao_lisp_atom {
uint8_t type;
uint8_t pad[1];
- ao_poly val;
ao_poly next;
char name[];
};
-#define AO_LISP_LAMBDA 0
-#define AO_LISP_NLAMBDA 1
-#define AO_LISP_MACRO 2
-#define AO_LISP_LEXPR 3
+struct ao_lisp_val {
+ ao_poly atom;
+ ao_poly val;
+};
+
+struct ao_lisp_frame_vals {
+ uint8_t type;
+ uint8_t size;
+ struct ao_lisp_val vals[];
+};
+
+struct ao_lisp_frame {
+ uint8_t type;
+ uint8_t num;
+ ao_poly prev;
+ ao_poly vals;
+};
+
+struct ao_lisp_bool {
+ uint8_t type;
+ uint8_t value;
+ uint16_t pad;
+};
+
+struct ao_lisp_bigint {
+ uint32_t value;
+};
+
+struct ao_lisp_float {
+ uint8_t type;
+ uint8_t pad1;
+ uint16_t pad2;
+ float value;
+};
+
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+static inline uint32_t
+ao_lisp_int_bigint(int32_t i) {
+ return AO_LISP_BIGINT | (i << 8);
+}
+static inline int32_t
+ao_lisp_bigint_int(uint32_t bi) {
+ return (int32_t) bi >> 8;
+}
+#else
+static inline uint32_t
+ao_lisp_int_bigint(int32_t i) {
+ return (uint32_t) (i & 0xffffff) | (AO_LISP_BIGINT << 24);
+}
+static inlint int32_t
+ao_lisp_bigint_int(uint32_t bi) {
+ return (int32_t) (bi << 8) >> 8;
+}
+#endif
+
+#define AO_LISP_MIN_INT (-(1 << (15 - AO_LISP_TYPE_SHIFT)))
+#define AO_LISP_MAX_INT ((1 << (15 - AO_LISP_TYPE_SHIFT)) - 1)
+#define AO_LISP_MIN_BIGINT (-(1 << 24))
+#define AO_LISP_MAX_BIGINT ((1 << 24) - 1)
+
+#define AO_LISP_NOT_INTEGER 0x7fffffff
+
+/* Set on type when the frame escapes the lambda */
+#define AO_LISP_FRAME_MARK 0x80
+#define AO_LISP_FRAME_PRINT 0x40
+
+static inline int ao_lisp_frame_marked(struct ao_lisp_frame *f) {
+ return f->type & AO_LISP_FRAME_MARK;
+}
+
+static inline struct ao_lisp_frame *
+ao_lisp_poly_frame(ao_poly poly) {
+ return ao_lisp_ref(poly);
+}
+
+static inline ao_poly
+ao_lisp_frame_poly(struct ao_lisp_frame *frame) {
+ return ao_lisp_poly(frame, AO_LISP_OTHER);
+}
+
+static inline struct ao_lisp_frame_vals *
+ao_lisp_poly_frame_vals(ao_poly poly) {
+ return ao_lisp_ref(poly);
+}
+
+static inline ao_poly
+ao_lisp_frame_vals_poly(struct ao_lisp_frame_vals *vals) {
+ return ao_lisp_poly(vals, AO_LISP_OTHER);
+}
+
+enum eval_state {
+ eval_sexpr, /* Evaluate an sexpr */
+ eval_val, /* Value computed */
+ eval_formal, /* Formal computed */
+ eval_exec, /* Start a lambda evaluation */
+ eval_apply, /* Execute apply */
+ eval_cond, /* Start next cond clause */
+ eval_cond_test, /* Check cond condition */
+ eval_begin, /* Start next begin entry */
+ eval_while, /* Start while condition */
+ eval_while_test, /* Check while condition */
+ eval_macro, /* Finished with macro generation */
+};
+
+struct ao_lisp_stack {
+ uint8_t type; /* AO_LISP_STACK */
+ uint8_t state; /* enum eval_state */
+ ao_poly prev; /* previous stack frame */
+ ao_poly sexprs; /* expressions to evaluate */
+ ao_poly values; /* values computed */
+ ao_poly values_tail; /* end of the values list for easy appending */
+ ao_poly frame; /* current lookup frame */
+ ao_poly list; /* most recent function call */
+};
+
+#define AO_LISP_STACK_MARK 0x80 /* set on type when a reference has been taken */
+#define AO_LISP_STACK_PRINT 0x40 /* stack is being printed */
+
+static inline int ao_lisp_stack_marked(struct ao_lisp_stack *s) {
+ return s->type & AO_LISP_STACK_MARK;
+}
+
+static inline void ao_lisp_stack_mark(struct ao_lisp_stack *s) {
+ s->type |= AO_LISP_STACK_MARK;
+}
+
+static inline struct ao_lisp_stack *
+ao_lisp_poly_stack(ao_poly p)
+{
+ return ao_lisp_ref(p);
+}
+
+static inline ao_poly
+ao_lisp_stack_poly(struct ao_lisp_stack *stack)
+{
+ return ao_lisp_poly(stack, AO_LISP_OTHER);
+}
+
+extern ao_poly ao_lisp_v;
+
+#define AO_LISP_FUNC_LAMBDA 0
+#define AO_LISP_FUNC_NLAMBDA 1
+#define AO_LISP_FUNC_MACRO 2
+#define AO_LISP_FUNC_LEXPR 3
+
+#define AO_LISP_FUNC_FREE_ARGS 0x80
+#define AO_LISP_FUNC_MASK 0x7f
+
+#define AO_LISP_FUNC_F_LAMBDA (AO_LISP_FUNC_FREE_ARGS | AO_LISP_FUNC_LAMBDA)
+#define AO_LISP_FUNC_F_NLAMBDA (AO_LISP_FUNC_FREE_ARGS | AO_LISP_FUNC_NLAMBDA)
+#define AO_LISP_FUNC_F_MACRO (AO_LISP_FUNC_FREE_ARGS | AO_LISP_FUNC_MACRO)
+#define AO_LISP_FUNC_F_LEXPR (AO_LISP_FUNC_FREE_ARGS | AO_LISP_FUNC_LEXPR)
struct ao_lisp_builtin {
uint8_t type;
uint16_t func;
};
-enum ao_lisp_builtin_id {
- builtin_car,
- builtin_cdr,
- builtin_cons,
- builtin_quote,
- builtin_print,
- builtin_plus,
- builtin_minus,
- builtin_times,
- builtin_divide,
- builtin_mod,
- builtin_last
-};
+#define AO_LISP_BUILTIN_ID
+#include "ao_lisp_builtin.h"
typedef ao_poly (*ao_lisp_func_t)(struct ao_lisp_cons *cons);
-extern ao_lisp_func_t ao_lisp_builtins[];
+extern const ao_lisp_func_t ao_lisp_builtins[];
static inline ao_lisp_func_t
ao_lisp_func(struct ao_lisp_builtin *b)
return ao_lisp_builtins[b->func];
}
+struct ao_lisp_lambda {
+ uint8_t type;
+ uint8_t args;
+ ao_poly code;
+ ao_poly frame;
+};
+
+static inline struct ao_lisp_lambda *
+ao_lisp_poly_lambda(ao_poly poly)
+{
+ return ao_lisp_ref(poly);
+}
+
+static inline ao_poly
+ao_lisp_lambda_poly(struct ao_lisp_lambda *lambda)
+{
+ return ao_lisp_poly(lambda, AO_LISP_OTHER);
+}
+
static inline void *
ao_lisp_poly_other(ao_poly poly) {
return ao_lisp_ref(poly);
}
+static inline uint8_t
+ao_lisp_other_type(void *other) {
+#if DBG_MEM
+ if ((*((uint8_t *) other) & AO_LISP_OTHER_TYPE_MASK) >= AO_LISP_NUM_TYPE)
+ ao_lisp_abort();
+#endif
+ return *((uint8_t *) other) & AO_LISP_OTHER_TYPE_MASK;
+}
+
static inline ao_poly
ao_lisp_other_poly(const void *other)
{
}
static inline int
-ao_lisp_mem_round(int size)
+ao_lisp_size_round(int size)
{
return (size + 3) & ~3;
}
+static inline int
+ao_lisp_size(const struct ao_lisp_type *type, void *addr)
+{
+ return ao_lisp_size_round(type->size(addr));
+}
+
#define AO_LISP_OTHER_POLY(other) ((ao_poly)(other) + AO_LISP_OTHER)
+static inline int ao_lisp_poly_base_type(ao_poly poly) {
+ return poly & AO_LISP_TYPE_MASK;
+}
+
static inline int ao_lisp_poly_type(ao_poly poly) {
- int type = poly & 3;
+ int type = poly & AO_LISP_TYPE_MASK;
if (type == AO_LISP_OTHER)
- return *((uint8_t *) ao_lisp_poly_other(poly));
+ return ao_lisp_other_type(ao_lisp_poly_other(poly));
return type;
}
+static inline int
+ao_lisp_is_cons(ao_poly poly) {
+ return (ao_lisp_poly_base_type(poly) == AO_LISP_CONS);
+}
+
+static inline int
+ao_lisp_is_pair(ao_poly poly) {
+ return poly != AO_LISP_NIL && (ao_lisp_poly_base_type(poly) == AO_LISP_CONS);
+}
+
static inline struct ao_lisp_cons *
ao_lisp_poly_cons(ao_poly poly)
{
return ao_lisp_poly(cons, AO_LISP_CONS);
}
-static inline int
+static inline int32_t
ao_lisp_poly_int(ao_poly poly)
{
- return (int) poly >> AO_LISP_TYPE_SHIFT;
+ return (int32_t) ((ao_signed_poly) poly >> AO_LISP_TYPE_SHIFT);
}
static inline ao_poly
-ao_lisp_int_poly(int i)
+ao_lisp_int_poly(int32_t i)
{
- return ((ao_poly) i << 2) + AO_LISP_INT;
+ return ((ao_poly) i << 2) | AO_LISP_INT;
+}
+
+static inline struct ao_lisp_bigint *
+ao_lisp_poly_bigint(ao_poly poly)
+{
+ return ao_lisp_ref(poly);
+}
+
+static inline ao_poly
+ao_lisp_bigint_poly(struct ao_lisp_bigint *bi)
+{
+ return ao_lisp_poly(bi, AO_LISP_OTHER);
}
static inline char *
return ao_lisp_poly(b, AO_LISP_OTHER);
}
+static inline ao_poly
+ao_lisp_bool_poly(struct ao_lisp_bool *b)
+{
+ return ao_lisp_poly(b, AO_LISP_OTHER);
+}
+
+static inline struct ao_lisp_bool *
+ao_lisp_poly_bool(ao_poly poly)
+{
+ return ao_lisp_ref(poly);
+}
+
+static inline ao_poly
+ao_lisp_float_poly(struct ao_lisp_float *f)
+{
+ return ao_lisp_poly(f, AO_LISP_OTHER);
+}
+
+static inline struct ao_lisp_float *
+ao_lisp_poly_float(ao_poly poly)
+{
+ return ao_lisp_ref(poly);
+}
+
+float
+ao_lisp_poly_number(ao_poly p);
+
/* memory functions */
-void
+
+extern int ao_lisp_collects[2];
+extern int ao_lisp_freed[2];
+extern int ao_lisp_loops[2];
+
+/* returns 1 if the object was already marked */
+int
ao_lisp_mark(const struct ao_lisp_type *type, void *addr);
/* returns 1 if the object was already marked */
int
-ao_lisp_mark_memory(void *addr, int size);
+ao_lisp_mark_memory(const struct ao_lisp_type *type, void *addr);
void *
-ao_lisp_move(const struct ao_lisp_type *type, void *addr);
+ao_lisp_move_map(void *addr);
-/* returns NULL if the object was already moved */
-void *
-ao_lisp_move_memory(void *addr, int size);
+/* returns 1 if the object was already moved */
+int
+ao_lisp_move(const struct ao_lisp_type *type, void **ref);
+
+/* returns 1 if the object was already moved */
+int
+ao_lisp_move_memory(const struct ao_lisp_type *type, void **ref);
void *
ao_lisp_alloc(int size);
+#define AO_LISP_COLLECT_FULL 1
+#define AO_LISP_COLLECT_INCREMENTAL 0
+
int
-ao_lisp_root_add(const struct ao_lisp_type *type, void *addr);
+ao_lisp_collect(uint8_t style);
+#if DBG_FREE_CONS
void
-ao_lisp_root_clear(void *addr);
+ao_lisp_cons_check(struct ao_lisp_cons *cons);
+#endif
+
+void
+ao_lisp_cons_stash(int id, struct ao_lisp_cons *cons);
+
+struct ao_lisp_cons *
+ao_lisp_cons_fetch(int id);
+
+void
+ao_lisp_poly_stash(int id, ao_poly poly);
+
+ao_poly
+ao_lisp_poly_fetch(int id);
+
+void
+ao_lisp_string_stash(int id, char *string);
+
+char *
+ao_lisp_string_fetch(int id);
+
+static inline void
+ao_lisp_stack_stash(int id, struct ao_lisp_stack *stack) {
+ ao_lisp_poly_stash(id, ao_lisp_stack_poly(stack));
+}
+
+static inline struct ao_lisp_stack *
+ao_lisp_stack_fetch(int id) {
+ return ao_lisp_poly_stack(ao_lisp_poly_fetch(id));
+}
+
+void
+ao_lisp_frame_stash(int id, struct ao_lisp_frame *frame);
+
+struct ao_lisp_frame *
+ao_lisp_frame_fetch(int id);
+
+/* bool */
+
+extern const struct ao_lisp_type ao_lisp_bool_type;
+
+void
+ao_lisp_bool_write(ao_poly v);
+
+#ifdef AO_LISP_MAKE_CONST
+struct ao_lisp_bool *ao_lisp_true, *ao_lisp_false;
+
+struct ao_lisp_bool *
+ao_lisp_bool_get(uint8_t value);
+#endif
/* cons */
extern const struct ao_lisp_type ao_lisp_cons_type;
struct ao_lisp_cons *
-ao_lisp_cons_cons(ao_poly car, struct ao_lisp_cons *cdr);
+ao_lisp_cons_cons(ao_poly car, ao_poly cdr);
+
+/* Return a cons or NULL for a proper list, else error */
+struct ao_lisp_cons *
+ao_lisp_cons_cdr(struct ao_lisp_cons *cons);
+
+ao_poly
+ao_lisp__cons(ao_poly car, ao_poly cdr);
+
+extern struct ao_lisp_cons *ao_lisp_cons_free_list;
+
+void
+ao_lisp_cons_free(struct ao_lisp_cons *cons);
+
+void
+ao_lisp_cons_write(ao_poly);
void
-ao_lisp_cons_print(ao_poly);
+ao_lisp_cons_display(ao_poly);
+
+int
+ao_lisp_cons_length(struct ao_lisp_cons *cons);
/* string */
extern const struct ao_lisp_type ao_lisp_string_type;
-char *
-ao_lisp_string_new(int len);
-
char *
ao_lisp_string_copy(char *a);
char *
ao_lisp_string_cat(char *a, char *b);
+ao_poly
+ao_lisp_string_pack(struct ao_lisp_cons *cons);
+
+ao_poly
+ao_lisp_string_unpack(char *a);
+
+void
+ao_lisp_string_write(ao_poly s);
+
void
-ao_lisp_string_print(ao_poly s);
+ao_lisp_string_display(ao_poly s);
/* atom */
extern const struct ao_lisp_type ao_lisp_atom_type;
-extern struct ao_lisp_atom *ao_lisp_atoms;
-
-void
-ao_lisp_atom_init(void);
+extern struct ao_lisp_atom *ao_lisp_atoms;
+extern struct ao_lisp_frame *ao_lisp_frame_global;
+extern struct ao_lisp_frame *ao_lisp_frame_current;
void
-ao_lisp_atom_print(ao_poly a);
+ao_lisp_atom_write(ao_poly a);
struct ao_lisp_atom *
ao_lisp_atom_intern(char *name);
+ao_poly *
+ao_lisp_atom_ref(ao_poly atom);
+
+ao_poly
+ao_lisp_atom_get(ao_poly atom);
+
+ao_poly
+ao_lisp_atom_set(ao_poly atom, ao_poly val);
+
+ao_poly
+ao_lisp_atom_def(ao_poly atom, ao_poly val);
+
/* int */
void
-ao_lisp_int_print(ao_poly i);
+ao_lisp_int_write(ao_poly i);
+
+int32_t
+ao_lisp_poly_integer(ao_poly p);
-/* prim */
ao_poly
-ao_lisp_poly_print(ao_poly p);
+ao_lisp_integer_poly(int32_t i);
+
+static inline int
+ao_lisp_integer_typep(uint8_t t)
+{
+ return (t == AO_LISP_INT) || (t == AO_LISP_BIGINT);
+}
void
-ao_lisp_poly_mark(ao_poly p);
+ao_lisp_bigint_write(ao_poly i);
-ao_poly
-ao_lisp_poly_move(ao_poly p);
+extern const struct ao_lisp_type ao_lisp_bigint_type;
+/* prim */
+void
+ao_lisp_poly_write(ao_poly p);
+
+void
+ao_lisp_poly_display(ao_poly p);
+
+int
+ao_lisp_poly_mark(ao_poly p, uint8_t note_cons);
+
+/* returns 1 if the object has already been moved */
+int
+ao_lisp_poly_move(ao_poly *p, uint8_t note_cons);
/* eval */
+
+void
+ao_lisp_eval_clear_globals(void);
+
+int
+ao_lisp_eval_restart(void);
+
ao_poly
ao_lisp_eval(ao_poly p);
+ao_poly
+ao_lisp_set_cond(struct ao_lisp_cons *cons);
+
+/* float */
+extern const struct ao_lisp_type ao_lisp_float_type;
+
+void
+ao_lisp_float_write(ao_poly p);
+
+ao_poly
+ao_lisp_float_get(float value);
+
+static inline uint8_t
+ao_lisp_number_typep(uint8_t t)
+{
+ return ao_lisp_integer_typep(t) || (t == AO_LISP_FLOAT);
+}
+
+float
+ao_lisp_poly_number(ao_poly p);
+
/* builtin */
void
-ao_lisp_builtin_print(ao_poly b);
+ao_lisp_builtin_write(ao_poly b);
+
+extern const struct ao_lisp_type ao_lisp_builtin_type;
+
+/* Check argument count */
+ao_poly
+ao_lisp_check_argc(ao_poly name, struct ao_lisp_cons *cons, int min, int max);
+
+/* Check argument type */
+ao_poly
+ao_lisp_check_argt(ao_poly name, struct ao_lisp_cons *cons, int argc, int type, int nil_ok);
+
+/* Fetch an arg (nil if off the end) */
+ao_poly
+ao_lisp_arg(struct ao_lisp_cons *cons, int argc);
+
+char *
+ao_lisp_args_name(uint8_t args);
/* read */
+extern struct ao_lisp_cons *ao_lisp_read_cons;
+extern struct ao_lisp_cons *ao_lisp_read_cons_tail;
+extern struct ao_lisp_cons *ao_lisp_read_stack;
+
ao_poly
ao_lisp_read(void);
ao_poly
ao_lisp_read_eval_print(void);
+/* frame */
+extern const struct ao_lisp_type ao_lisp_frame_type;
+extern const struct ao_lisp_type ao_lisp_frame_vals_type;
+
+#define AO_LISP_FRAME_FREE 6
+
+extern struct ao_lisp_frame *ao_lisp_frame_free_list[AO_LISP_FRAME_FREE];
+
+ao_poly
+ao_lisp_frame_mark(struct ao_lisp_frame *frame);
+
+ao_poly *
+ao_lisp_frame_ref(struct ao_lisp_frame *frame, ao_poly atom);
+
+struct ao_lisp_frame *
+ao_lisp_frame_new(int num);
+
+void
+ao_lisp_frame_free(struct ao_lisp_frame *frame);
+
+void
+ao_lisp_frame_bind(struct ao_lisp_frame *frame, int num, ao_poly atom, ao_poly val);
+
+ao_poly
+ao_lisp_frame_add(struct ao_lisp_frame *frame, ao_poly atom, ao_poly val);
+
+void
+ao_lisp_frame_write(ao_poly p);
+
+void
+ao_lisp_frame_init(void);
+
+/* lambda */
+extern const struct ao_lisp_type ao_lisp_lambda_type;
+
+extern const char *ao_lisp_state_names[];
+
+struct ao_lisp_lambda *
+ao_lisp_lambda_new(ao_poly cons);
+
+void
+ao_lisp_lambda_write(ao_poly lambda);
+
+ao_poly
+ao_lisp_lambda_eval(void);
+
+/* stack */
+
+extern const struct ao_lisp_type ao_lisp_stack_type;
+extern struct ao_lisp_stack *ao_lisp_stack;
+extern struct ao_lisp_stack *ao_lisp_stack_free_list;
+
+void
+ao_lisp_stack_reset(struct ao_lisp_stack *stack);
+
+int
+ao_lisp_stack_push(void);
+
+void
+ao_lisp_stack_pop(void);
+
+void
+ao_lisp_stack_clear(void);
+
+void
+ao_lisp_stack_write(ao_poly stack);
+
+ao_poly
+ao_lisp_stack_eval(void);
+
+/* error */
+
+void
+ao_lisp_vprintf(char *format, va_list args);
+
+void
+ao_lisp_printf(char *format, ...);
+
+void
+ao_lisp_error_poly(char *name, ao_poly poly, ao_poly last);
+
+void
+ao_lisp_error_frame(int indent, char *name, struct ao_lisp_frame *frame);
+
+ao_poly
+ao_lisp_error(int error, char *format, ...);
+
+/* builtins */
+
+#define AO_LISP_BUILTIN_DECLS
+#include "ao_lisp_builtin.h"
+
+/* debugging macros */
+
+#if DBG_EVAL || DBG_READ || DBG_MEM
+#define DBG_CODE 1
+int ao_lisp_stack_depth;
+#define DBG_DO(a) a
+#define DBG_INDENT() do { int _s; for(_s = 0; _s < ao_lisp_stack_depth; _s++) printf(" "); } while(0)
+#define DBG_IN() (++ao_lisp_stack_depth)
+#define DBG_OUT() (--ao_lisp_stack_depth)
+#define DBG_RESET() (ao_lisp_stack_depth = 0)
+#define DBG(...) ao_lisp_printf(__VA_ARGS__)
+#define DBGI(...) do { printf("%4d: ", __LINE__); DBG_INDENT(); DBG(__VA_ARGS__); } while (0)
+#define DBG_CONS(a) ao_lisp_cons_write(ao_lisp_cons_poly(a))
+#define DBG_POLY(a) ao_lisp_poly_write(a)
+#define OFFSET(a) ((a) ? (int) ((uint8_t *) a - ao_lisp_pool) : -1)
+#define DBG_STACK() ao_lisp_stack_write(ao_lisp_stack_poly(ao_lisp_stack))
+static inline void
+ao_lisp_frames_dump(void)
+{
+ struct ao_lisp_stack *s;
+ DBGI(".. current frame: "); DBG_POLY(ao_lisp_frame_poly(ao_lisp_frame_current)); DBG("\n");
+ for (s = ao_lisp_stack; s; s = ao_lisp_poly_stack(s->prev)) {
+ DBGI(".. stack frame: "); DBG_POLY(s->frame); DBG("\n");
+ }
+}
+#define DBG_FRAMES() ao_lisp_frames_dump()
+#else
+#define DBG_DO(a)
+#define DBG_INDENT()
+#define DBG_IN()
+#define DBG_OUT()
+#define DBG(...)
+#define DBGI(...)
+#define DBG_CONS(a)
+#define DBG_POLY(a)
+#define DBG_RESET()
+#define DBG_STACK()
+#define DBG_FRAMES()
+#endif
+
+#if DBG_READ
+#define RDBGI(...) DBGI(__VA_ARGS__)
+#define RDBG_IN() DBG_IN()
+#define RDBG_OUT() DBG_OUT()
+#else
+#define RDBGI(...)
+#define RDBG_IN()
+#define RDBG_OUT()
+#endif
+
+#define DBG_MEM_START 1
+
+#if DBG_MEM
+
+#include <assert.h>
+extern int dbg_move_depth;
+#define MDBG_DUMP 1
+#define MDBG_OFFSET(a) ((a) ? (int) ((uint8_t *) (a) - ao_lisp_pool) : -1)
+
+extern int dbg_mem;
+
+#define MDBG_DO(a) DBG_DO(a)
+#define MDBG_MOVE(...) do { if (dbg_mem) { int d; for (d = 0; d < dbg_move_depth; d++) printf (" "); printf(__VA_ARGS__); } } while (0)
+#define MDBG_MORE(...) do { if (dbg_mem) printf(__VA_ARGS__); } while (0)
+#define MDBG_MOVE_IN() (dbg_move_depth++)
+#define MDBG_MOVE_OUT() (assert(--dbg_move_depth >= 0))
+
+#else
+
+#define MDBG_DO(a)
+#define MDBG_MOVE(...)
+#define MDBG_MORE(...)
+#define MDBG_MOVE_IN()
+#define MDBG_MOVE_OUT()
+
+#endif
+
#endif /* _AO_LISP_H_ */
projects / fw / altos / blobdiff