static void push_fnc(struct context *context, struct byte_array *program)
{
uint32_t num_closures = serial_decode_int(program);
struct map *closures = NULL;
for (int i=0; i<num_closures; i++) {
struct byte_array *name = serial_decode_string(program);
if (context->runtime) {
if (!closures)
closures = map_new();
struct variable *c = find_var(context, name);
c = variable_copy(context, c);
map_insert(closures, name, c);
}
}
struct byte_array *body = serial_decode_string(program);
DEBUGPRINT("FNC %u,%u\n", num_closures, body->length);
//display_code(context, body);
if (context->runtime) {
struct variable *f = variable_new_fnc(context, body, closures);
variable_push(context, f);
}
}
void *incoming_connection(void *arg)
{
char readline[MAXLINE];
struct thread_argument *ta = (struct thread_argument *)arg;
struct context *context = context_new(true, true);
context->find = ta->find;
for (;;)
{
bzero(readline, sizeof(readline));
int n;
if (((n = CyaSSL_read(ta->ssl, readline, MAXLINE)) <= 0))
{
fprintf(stderr, "client closed connection\n");
goto free_ssl;
}
fprintf(stderr, "%d bytes received: %s\n", n, readline);
struct byte_array *raw_message = byte_array_new_size(n);
raw_message->data = (uint8_t*)readline;
int32_t raw_message_length = serial_decode_int(raw_message);
assert_message(raw_message_length < MAXLINE, "todo: handle long messages");
struct variable *message = variable_deserialize(context, raw_message);
struct variable *listener = (struct variable *)map_get(server_listeners, (void*)(VOID_INT)ta->fd);
vm_call(context, listener, message);
}
free_ssl:
CyaSSL_free(ta->ssl); // Free CYASSL object
free(ta);
context_del(context);
return NULL;
}
static void push_bool(struct context *context, struct byte_array *program)
{
null_check(program);
int32_t num = serial_decode_int(program);
VM_DEBUGPRINT("BOOL %d\n", num);
struct variable* var = variable_new_bool(context, num);
variable_push(context, var);
}
void serial_decode(struct byte_array* buf, serial_element se, const void* extra)
{
while (buf->current < buf->data + buf->length)
{
// get key and wire type
int32_t keyWire = serial_decode_int(buf);
struct key_value_pair pair = {
.key = keyWire >> 2,
.wire_type = (enum serial_type)(keyWire & 0x03)
};
// get data
switch(pair.wire_type) {
case SERIAL_INT: /* int */
pair.value.integer = serial_decode_int(buf);
break;
case SERIAL_FLOAT:
pair.value.floater = serial_decode_float(buf);
case SERIAL_STRING: /* bytes */
pair.value.bytes = serial_decode_string(buf);
break;
case SERIAL_ARRAY:
break;
default:
DEBUGPRINT("serial_decode ?\n");
break;
}
if (se(&pair, buf, extra)) {
// DEBUGPRINT("serial_decode: break\n");
break;
}
}
// DEBUGPRINT("serial_decode done\n");
}
// assume little endian
struct byte_array *encode_float(struct byte_array *buf, float f)
{
assert_message(sizeof(float)==4, "bad float size");
uint8_t *uf = (uint8_t*)&f;
for (int i=4; i; i--) {
byte_array_add_byte(buf, *uf);
uf++;
}
return buf;
}
static int32_t iff(struct context *context, struct byte_array *program)
{
null_check(program);
int32_t offset = serial_decode_int(program);
DEBUGPRINT("IF %d\n", offset);
if (!context->runtime)
return 0;
return test_operand(context) ? 0 : (VOID_INT)offset;
}
struct variable *src(struct context *context, enum Opcode op, struct byte_array *program)
{
int32_t size = serial_decode_int(program);
DEBUGPRINT("%s %d\n", NUM_TO_STRING(opcodes, op), size);
if (!context->runtime)
return NULL;
struct variable *v = variable_new_src(context, size);
stack_push(context->operand_stack, v);
return v;
}
struct byte_array* serial_decode_string(struct byte_array* buf)
{
null_check(buf);
int32_t len = serial_decode_int(buf);
assert_message(len>=0, "negative malloc");
struct byte_array* ba = byte_array_new_size(len);
ba->data = ba->current = (uint8_t*)malloc(len);
null_check(ba->data);
memcpy(ba->data, buf->current, len);
buf->current += len;
return ba;
}
static int32_t jump(struct context *context, struct byte_array *program)
{
null_check(program);
uint8_t *start = program->current;
int32_t offset = serial_decode_int(program);
DEBUGPRINT("JMP %d\n", offset);
if (!context->runtime)
return 0;
if (offset < 0) // skip over current VM_JMP instruction when going backward
offset -= (program->current - start) + 1;
return offset;// - (program->current - start);
}
static void push_map(struct context *context, struct byte_array *program)
{
int32_t num_items = serial_decode_int(program);
DEBUGPRINT("MAP %d", num_items);
if (!context->runtime)
VM_DEBUGPRINT("\n");
struct map *map = map_new();
while (num_items--) {
struct variable* value = variable_pop(context);
struct variable* key = variable_pop(context);
assert_message(key->type==VAR_STR, "non-string map index");
map_insert(map, key->str, value);
}
struct variable *v = variable_new_map(context, map);
DEBUGPRINT(": %s\n", variable_value_str(context, v));
variable_push(context, v);
}
static int32_t boolean_op(struct context *context, struct byte_array *program, enum Opcode op)
{
null_check(program);
int32_t short_circuit = serial_decode_int(program);
DEBUGPRINT("%s %d\n", NUM_TO_STRING(opcodes, op), short_circuit);
if (!context->runtime)
return 0;
struct variable *v = variable_pop(context);
null_check(v);
bool indeed_quite_so;
switch (v->type) {
case VAR_BOOL: indeed_quite_so = v->boolean; break;
case VAR_FLT: indeed_quite_so = v->floater; break;
case VAR_INT: indeed_quite_so = v->integer; break;
case VAR_NIL: return 0;
default: indeed_quite_so = true; break;
}
if (indeed_quite_so ^ (op == VM_AND)) {
stack_push(context->operand_stack, v);
return short_circuit;
}
return 0;
}
static void push_list(struct context *context, struct byte_array *program)
{
int32_t num_items = serial_decode_int(program);
DEBUGPRINT("LST %d", num_items);
if (!context->runtime)
VM_DEBUGPRINT("\n");
struct array *items = array_new();
struct map *map = NULL;
while (num_items--) {
struct variable* v = variable_pop(context);
if (v->type == VAR_MAP) {
if (!map)
map = map_new(context, NULL);
map_update(map, v->map); // mapped values are stored in the map, not list
}
else
array_insert(items, 0, v);
}
struct variable *list = variable_new_list(context, items);
list->map = map;
DEBUGPRINT(": %s\n", variable_value_str(context, list));
variable_push(context, list);
}
