Stack* Recorrer(Maze *m, Point *input){
int i;
Stack *paux = NULL; /*pila auxiliar*/
Stack *pcamino = NULL; /*pila del camino seguido*/
EleStack *pele = NULL; /*punto donde nos encontramos*/
EleStack *pelepoint = NULL; /*Punto vecino*/
Point *ppoint = NULL;
Point *ppoint2 = NULL;
if(!m){
printf("Error pasando el maze\n");
return NULL;
}
if(!input){
printf("Error pasando el input\n");
return NULL;
}
paux = stack_ini();
if (!paux){
printf ("Error en reserva memoria paux\n");
return NULL;
}
pcamino = stack_ini();
if (!pcamino){
printf ("Error reserva memoria pcamino\n");
stack_free (paux);
return NULL;
}
pele = elestack_ini();
if (!pele){
printf ("Error reserva memoria pele\n");
stack_free(paux);
stack_free(pcamino);
return NULL;
}
if (!elestack_setInfo(pele, input)){ /*Guardamos el punto input en pele*/
printf ("Error en setInfo de pele\n");
elestack_free(pele);
stack_free(paux);
stack_free(pcamino);
return NULL;
}
if(!stack_push (paux, pele)){ /*Introducimos pele en la pila auxiliar*/
printf("Error push del input\n");
elestack_free(pele);
stack_free(paux);
stack_free(pcamino);
return NULL;
}
elestack_free(pele);
while (!stack_isEmpty(paux)){ /*mientras la pila auxiliar no esta vacia*/
pele = stack_pop(paux); /*extraemos el punto superior de la pila y nos "situamos" ahi*/
stack_push(pcamino, pele); /*Como visitamos ese punto lo introducimos en el camino*/
point_setSymbol(maze_getPoint(m, point_getCoordinateX((Point *)elestack_getInfo(pele)), point_getCoordinateY((Point *)elestack_getInfo(pele))), VISITADO);
/*Modificamos el simbolo del punto a VISITADO, lo guardamos en el laberinto original*/
for(i = 0; i <= DOWN; i++){ /*Comprobamos las 4 direcciones que se pueden seguir dentro de un laberinto*/
pelepoint = elestack_ini();
if(!pelepoint){
printf("Error en elestack_ini\n");
elestack_free(pele);
stack_free(paux);
stack_free(pcamino);
return NULL;
}
ppoint2 = (Point*)elestack_getInfo(pele); /*Obtenemos el punto de pele*/
if(!ppoint2){
printf("Error al obtener el punto de pele");
elestack_free(pelepoint);
elestack_free(pele);
stack_free(paux);
stack_free(pcamino);
return NULL;
}
ppoint = maze_getNeighborPoint(m, ppoint2, i); /*Obtenemos el punto vecino en la direccion que indica "i"*/
if(!ppoint){
printf("Error ppoint 1\n");
elestack_free(pelepoint);
elestack_free(pele);
stack_free(paux);
stack_free(pcamino);
return NULL;
}
if(!elestack_setInfo(pelepoint, (void*)ppoint)){ /*Asignamos a pelepoint el punto vecino*/
printf("Error setinfo\n");
elestack_free(pelepoint);
elestack_free(pele);
stack_free(paux);
stack_free(pcamino);
return NULL;
}
if(point_getSymbol(ppoint) == SPACE){ /*Introducimos el punto en la pila auxiliar SOLO si es un SPACE*/
if(!stack_push(paux, pelepoint)){
printf("Error al hacer el push de pelepoint");
elestack_free(pelepoint);
elestack_free(pele);
stack_free(paux);
stack_free(pcamino);
return NULL;
}
}
else if(point_getSymbol(ppoint) == OUTPUT){ /*Si el punto es el OUTPUT, lo introduce en el camino y devuelve dicha pila*/
stack_push(pcamino, pelepoint);
elestack_free(pelepoint);
elestack_free(pele);
stack_free(paux);
return pcamino;
}
elestack_free(pelepoint);
}
elestack_free(pele);
}
stack_free(paux);
stack_free(pcamino);
return NULL;
}
static bool daemon_serve(int s, char *cmd) {
/* Do <cmd> for client connected on <s>. */
static Node *null=NULL, **stack=&null;
char buf[FILEPATH_MAX];
bool keep_running=true;
if( strcmp(cmd, CMD_PUSH) == 0 ) {
char *status;
if( stack_len(stack) >= STACK_MAX ) {
printf("daemon: push request failed (stack full)\n");
status = MSG_ERROR;
strcpy(buf, MSG_ERR_STACK_FULL);
} else {
soc_w(s, MSG_SUCCESS);
if( soc_r(s, buf, FILEPATH_MAX) <= 0 ) {
printf("daemon: push request failed (read error)\n");
status = MSG_ERROR;
strcpy(buf, MSG_ERR_LENGTH);
} else {
status = MSG_SUCCESS;
stack_push(buf, stack);
printf("daemon: PUSH `%s'\n", buf);
}
}
soc_w(s, status);
soc_w(s, buf);
} else if( strcmp(cmd, CMD_POP) == 0 ) {
char *status;
if( stack_len(stack) > 0 ) {
status = MSG_SUCCESS;
sprintf(buf, "%s", stack_peek(stack));
stack_drop(stack);
printf("daemon: POP `%s'\n", buf);
} else {
printf("daemon: tried to pop from empty stack\n");
status = MSG_ERROR;
sprintf(buf, MSG_ERR_STACK_EMPTY);
}
soc_w(s, status);
soc_w(s, buf);
} else if( strcmp(cmd, CMD_PEEK) == 0 ) {
char *status;
if( stack_len(stack) > 0 ) {
status = MSG_SUCCESS;
sprintf(buf, "%s", stack_peek(stack));
} else {
status = MSG_ERROR;
sprintf(buf, MSG_ERR_STACK_EMPTY);
}
soc_w(s, status);
soc_w(s, buf);
} else if( strcmp(cmd, CMD_PICK) == 0 ) {
char *picked;
soc_w(s, MSG_SUCCESS);
soc_r(s, buf, MSG_MAX);
picked = stack_nth(atoi(buf), stack);
if( picked == NULL ) {
soc_w(s, MSG_ERROR);
soc_w(s, "stack is not quite that deep");
} else {
soc_w(s, MSG_SUCCESS);
soc_w(s, picked);
}
} else if( strcmp(cmd, CMD_SIZE) == 0 ) {
sprintf(buf, "%d", stack_len(stack));
soc_w(s, buf);
} else if( strcmp(cmd, CMD_STOP) == 0 ) {
printf("daemon: Shutting down...\n");
soc_w(s, MSG_SUCCESS);
keep_running = false;
} else {
char msg[MSG_MAX + FILEPATH_MAX];
sprintf(msg, "unknown command `%s'", cmd);
soc_w(s, msg);
}
return keep_running;
}
void append_call_stack_tabled(char type, obj_table* table){
obj * o = create_call_block_tabled(type, call_stack_top, table);
stack_push(call_stack, o);
call_stack_top = (call_block*)o->data;
}
/*
* input: rule straight from the DDDS + avp-stack.
*
* output: adds found rules to the stack and return
* 1 on success
* 0 on failure
*/
static int check_rule(str *rule, char *service, int service_len, struct avp_stack *stack) {
/* for the select */
db_key_t keys[2];
db_val_t vals[2];
db_key_t cols[4];
db1_res_t* res;
db_row_t* row;
db_val_t* val;
int i;
char *type;
int type_len;
LM_INFO("checking for '%.*s'.\n", rule->len, ZSW(rule->s));
if ((service_len != 11) || (strncasecmp("d2p+sip:fed", service, 11) &&
strncasecmp("d2p+sip:std", service, 11) && strncasecmp("d2p+sip:dom", service, 11))) {
LM_ERR("can only cope with d2p+sip:fed, d2p+sip:std,and d2p+sip:dom "
"for now (and not %.*s).\n", service_len, service);
return(0);
}
type = service + 8;
type_len = service_len - 8;
if (domainpolicy_dbf.use_table(db_handle, &domainpolicy_table) < 0) {
LM_ERR("failed to domainpolicy table\n");
return -1;
}
keys[0]=&domainpolicy_col_rule;
keys[1]=&domainpolicy_col_type;
cols[0]=&domainpolicy_col_rule;
cols[1]=&domainpolicy_col_type;
cols[2]=&domainpolicy_col_att;
cols[3]=&domainpolicy_col_val;
VAL_TYPE(&vals[0]) = DB1_STR;
VAL_NULL(&vals[0]) = 0;
VAL_STR(&vals[0]).s = rule->s;
VAL_STR(&vals[0]).len = rule->len;
VAL_TYPE(&vals[1]) = DB1_STR;
VAL_NULL(&vals[1]) = 0;
VAL_STR(&vals[1]).s = type;
VAL_STR(&vals[1]).len = type_len;
/*
* SELECT rule, att, val from domainpolicy where rule = "..."
*/
if (domainpolicy_dbf.query(db_handle, keys, 0, vals, cols, 2, 4, 0, &res) < 0
) {
LM_ERR("querying database\n");
return -1;
}
LM_INFO("querying database OK\n");
if (RES_ROW_N(res) == 0) {
LM_DBG("rule '%.*s' is not know.\n",
rule->len, ZSW(rule->s));
domainpolicy_dbf.free_result(db_handle, res);
return 0;
} else {
LM_DBG("rule '%.*s' is known\n", rule->len, ZSW(rule->s));
row = RES_ROWS(res);
for(i = 0; i < RES_ROW_N(res); i++) {
if (ROW_N(row + i) != 4) {
LM_ERR("unexpected cell count\n");
return(-1);
}
val = ROW_VALUES(row + i);
if ((VAL_TYPE(val) != DB1_STRING) ||
(VAL_TYPE(val+1) != DB1_STRING) ||
(VAL_TYPE(val+2) != DB1_STRING) ||
(VAL_TYPE(val+3) != DB1_STRING)) {
LM_ERR("unexpected cell types\n");
return(-1);
}
if (VAL_NULL(val+2) || VAL_NULL(val+3)) {
LM_INFO("db returned NULL values. Fine with us.\n");
continue;
}
LM_INFO("DB returned %s/%s \n",VAL_STRING(val+2),VAL_STRING(val+3));
if (!stack_push(stack, (char *) VAL_STRING(val+2),
(char *) VAL_STRING(val+3))) {
return(-1);
}
}
domainpolicy_dbf.free_result(db_handle, res);
return 1;
}
}
int main(int argc, char* argv[])
{
int i;
node * m;
/* obligatory */
printf("Hello, World\r\n");
printf("\r\n---\r\n");
/* Node stuff */
printf("Creating and destroying 10000 nodes\r\n");
for (i = 0; i < 10000 ; i++)
{
int data = i;
node * n = build_node(&data);
destroy_node(n);
}
printf("Done\r\n");
printf("\r\n---\r\n");
printf("Building a queue, adding 10000 nodes. Printing out every 1000\r\n");
queue * q = build_queue();
for (i = 0; i < 10000 ; i++)
{
int data = i;
node * n = build_node(&data);
queue_push(q, n);
}
printf("Queue has the size %d\r\n", q->size);
for (i = 0; i < 10000 ; i++)
{
node * n = queue_pop(q);
if((i%1000)==0)
{
printf("Node has the data %d\r\n", *(int*)n->data);
}
destroy_node(n);
}
printf("Queue has the size %d\r\n", q->size);
destroy_queue(q);
printf("\r\n---\r\n");
printf("Building a stack, adding 10000 nodes. Printing out every 1000\r\n");
stack * s = build_stack();
for (i = 0; i < 10000 ; i++)
{
int data = i;
node * n = build_node(&data);
stack_push(s, n);
}
printf("Stack has the size %d\r\n", s->size);
for (i = 0; i < 10000 ; i++)
{
node * n = stack_pop(s);
if((i%1000)==0)
{
printf("Node has the data %d\r\n", *(int*)n->data);
}
destroy_node(n);
}
printf("Stack has the size %d\r\n", s->size);
destroy_stack(s);
printf("\r\n---\r\n");
printf("Building a linked list, adding 10000 nodes. Printing out every 1000\r\n");
llist * l = build_llist();
for (i = 0; i < 10000 ; i++)
{
int data = i;
node * n = build_node(&data);
llist_add(l, n);
}
printf("llist has the size %d\r\n", l->size);
printf("Testing arbitrary access...\r\n");
m = llist_get(l, 87);
printf("Node has the data %d\r\n", *(int*)m->data);
m = llist_get(l, 3487);
printf("Node has the data %d\r\n", *(int*)m->data);
m = llist_get(l, 287);
printf("Node has the data %d\r\n", *(int*)m->data);
printf("Testing arbitrary delete...\r\n");
m = llist_get(l, 299);
printf("Node has the data %d\r\n", *(int*)m->data);
llist_delete(l, 299);
m = llist_get(l, 299);
printf("Node has the data %d\r\n", *(int*)m->data);
printf("Testing mass delete...\r\n");
destroy_llist(l);
printf("\r\n---\r\n");
printf("Creating and destroying 10000 single trees\r\n");
for (i = 0; i < 10000 ; i++)
{
int data = i;
tree * n = build_tree(&data);
destroy_tree(n);
}
printf("Done\r\n");
printf("\r\n---\r\n");
printf("Testing add/delete for trees\r\n");
int data = 2;
tree * root = build_tree(&data);
//for (i = 0; i < 3 ; i++)
// {
// int data = i;
// tree * n = build_tree(&data);
// destroy_tree(n);
// add_leaf(&root, n, &tree_int_comp);
// }
data = 1;
tree * leaf1 = build_tree(&data);
add_leaf(&root, leaf1, &tree_int_comp);
data = 0;
tree * leaf2 = build_tree(&data);
add_leaf(&root, leaf2, &tree_int_comp);
printf("Root node has value %d before deletion\r\n", *(int*)root->data);
delete_node(&(root));
printf("Root node has value %d after deletion\r\n", *(int*)root->data);
destroy_tree(leaf1);
destroy_tree(leaf2);
printf("Done\r\n");
return 0;
}
//中間の数式を逆ポーランドに変換する関数
void convert_in_formula_to_rpn_formula(char* formula)
{
printf("\tConvert IN Formula to RPN Formula : start IN Formula = \"%s\"\n",formula);
char tmp_buffer[BUFFER_LENGTH];
int tmp_buffer_pointer = 0;
string_clear(tmp_buffer,'\0',BUFFER_LENGTH);
int i;
//メインループ
for(i=0;formula[i]!='\0';i++)
{
//数字の処理
if((formula[i]>='0'&&formula[i]<='9')||formula[i]=='.')
{
tmp_buffer[tmp_buffer_pointer++] = formula[i];
}
//各演算子の処理
else if(formula[i]=='+')
{
for(;;)
{
//自分の優先順位より低くなるまでスタックをポップ
if((int)(stack_pointer-1)>=0)
{
if((int)stack[stack_pointer-1]!='(')
{
tmp_buffer[tmp_buffer_pointer++] = ' ';
tmp_buffer[tmp_buffer_pointer++] = (int)stack_pop();
}
else
{
stack_push(formula[i]);
break;
}
}
else
{
stack_push(formula[i]);
break;
}
}
tmp_buffer[tmp_buffer_pointer++] = ' ';
}
else if(formula[i]=='-')
{
//式の最初にマイナスがあったときのための処理
if(i==0)
{
tmp_buffer[tmp_buffer_pointer++] = '0';
tmp_buffer[tmp_buffer_pointer++] = ' ';
}
else if(formula[i-1]=='(')
{
tmp_buffer[tmp_buffer_pointer++] = '0';
tmp_buffer[tmp_buffer_pointer++] = ' ';
}
for(;;)
{
//自分の優先順位より低くなるまでスタックをポップ
if((stack_pointer-1)>=0)
{
if((int)stack[stack_pointer-1]!='+'&&(int)stack[stack_pointer-1]!='(')
{
tmp_buffer[tmp_buffer_pointer++] = ' ';
tmp_buffer[tmp_buffer_pointer++] = (int)stack_pop();
}
else
{
stack_push(formula[i]);
break;
}
}
else
{
stack_push(formula[i]);
break;
}
}
tmp_buffer[tmp_buffer_pointer++] = ' ';
}
else if(formula[i]=='*')
{
for(;;)
{
//自分の優先順位より低くなるまでスタックをポップ
if((stack_pointer-1)>=0)
{
if((int)stack[stack_pointer-1]!='+'&&(int)stack[stack_pointer-1]!='-'&&(int)stack[stack_pointer-1]!='(')
{
tmp_buffer[tmp_buffer_pointer++] = ' ';
tmp_buffer[tmp_buffer_pointer++] = (int)stack_pop();
}
else
{
stack_push(formula[i]);
break;
}
}
else
{
stack_push(formula[i]);
break;
}
}
tmp_buffer[tmp_buffer_pointer++] = ' ';
}
else if(formula[i]=='/')
{
for(;;)
{
//自分の優先順位より低くなるまでスタックをポップ
if((stack_pointer-1)>=0)
{
if((int)stack[stack_pointer-1]!='+'&&(int)stack[stack_pointer-1]!='-'&&(int)stack[stack_pointer-1]!='*'&&(int)stack[stack_pointer-1]!='(')
{
tmp_buffer[tmp_buffer_pointer++] = ' ';
tmp_buffer[tmp_buffer_pointer++] = (int)stack_pop();
}
else
{
stack_push(formula[i]);
break;
}
}
else
{
stack_push(formula[i]);
break;
}
}
tmp_buffer[tmp_buffer_pointer++] = ' ';
}
//括弧開きがあったとき
else if(formula[i]=='(')
{
stack_push(formula[i]);
tmp_buffer[tmp_buffer_pointer++] = ' ';
}
//括弧閉じがあったとき
else if(formula[i]==')')
{
for(;;)
{
//括弧開きが出るまでスタックをポップ
if(stack[stack_pointer-1]!='(')
{
tmp_buffer[tmp_buffer_pointer++] = ' ';
tmp_buffer[tmp_buffer_pointer++] = (int)stack_pop();
}
//括弧開きは読み捨てる
else
{
stack_pop();
break;
}
}
}
}
//スタックに残っている演算子をすべてポップ
for(i=stack_pointer-1;i>=0;i--)
{
tmp_buffer[tmp_buffer_pointer++] = ' ';
tmp_buffer[tmp_buffer_pointer++] = (int)stack_pop();
}
tmp_buffer[tmp_buffer_pointer++] = '\0';
my_strcpy(formula,tmp_buffer);
string_clear(tmp_buffer,'\0',BUFFER_LENGTH);
tmp_buffer_pointer = 0;
stack_clear();
printf("\tConvert IN Formula to RPN Formula : done RPN Formula = \"%s\"\n",formula);
}
static int
push(struct eval *eval, struct tok *tok)
{
return stack_push(eval->opstk, tok);
}
/**
* Stores the current read and write pointers
*/
void buffer_pushp(buffer_t* buffer)
{
stack_push(&buffer->ptr_stack, buffer->read_ptr);
stack_push(&buffer->ptr_stack, buffer->read_avail);
}
/* @builtin-bind { '"', builtin_string }, */
int builtin_string(interpreter* interp) {
string accum, s;
int result;
unsigned begin;
accum = empty_string();
++interp->ip;
while (1) {
/* Scan for the next important character. */
for (begin = interp->ip; is_ip_valid(interp); ++interp->ip)
if (curr(interp) == '"' ||
curr(interp) == '$' ||
curr(interp) == '`' ||
curr(interp) == '\\' ||
curr(interp) == '%')
break;
/* Found important character or EOI. */
if (!is_ip_valid(interp)) {
print_error("Encountered end-of-input in string literal");
goto error;
}
/* Append everything in-between */
accum = append_data(accum,
string_data(interp->code) + begin,
string_data(interp->code) + interp->ip);
switch (curr(interp)) {
case '"': goto done;
case '$':
++interp->ip;
if (!is_ip_valid(interp)) {
print_error("Encountered end-of-input in string literal");
goto error;
}
/* Append value of this register */
accum = append_string(accum,
interp->registers[curr(interp)]);
touch_reg(interp, curr(interp));
break;
case '%':
s = stack_pop(interp);
if (!s) {
print_error("Stack underflow");
goto error;
}
accum = append_string(accum, s);
free(s);
break;
case '`':
if (!interp->initial_whitespace) {
print_error("Initial whitespace (`) not available in this context.");
goto error;
}
accum = append_string(accum, interp->initial_whitespace);
break;
case '\\':
result = builtin_escape(interp);
if (!result) goto error;
if (result == 2) break; /* Didn't push anything */
s = stack_pop(interp);
/* Popping will always succeed if escape returned success. */
accum = append_string(accum, s);
free(s);
break;
}
/* All the above (which don't goto elsewhere) leave the IP on the end of
* whatever special thing they did.
*/
++interp->ip;
}
done:
stack_push(interp, accum);
return 1;
error:
diagnostic(interp, NULL);
free(accum);
return 0;
}
int primary_expression_mods(struct token *token)
{
printf("Hello from primary_expression_mods\n");
if (token->op_type == OPENPAREN){
tree_mknode(-1); //TODO implement '('
input_consume();
free_token(token);
stack_pop();
stack_push(TOKEN_CLOSEPAREN); //')'
stack_push(PRIMARY_EXPRESSION_LIST);
return -1;
}
else if (token->op_type == OPENBRACKET){
tree_mknode(PRIMARY_EXPRESSION_MODS);
input_consume(); //get the [
free_token(token);
stack_pop();
struct token *t = input_consume(); //the inner part of the [x]
struct identifier *nid = malloc(sizeof(struct identifier));
nid->lexeme = t->lexeme;
if (t->type == ID_KW){
struct hashentry *he = hash_retrieve(kwtable, nid->lexeme);
if (he != NULL){ //is a keyword (an error)
log_error(PRIMARY_EXPRESSION_MODS);
return -1;
}
else{
he = hash_retrieve(symboltable, nid->lexeme);
if (he == NULL){ //symbol not defined
log_error(PRIMARY_EXPRESSION_MODS);
printf("%s has not been initialized\n", nid->lexeme);
return -1;
}
else{
tree_add_attr(he->data, 4);
free_token(t);
input_consume(); //the last ]
return 0;
}
}
}
else if (t->type >= C_NUM && t->type <= C_F){
struct identifier *id = malloc(sizeof(struct identifier));
id->lexeme = t->lexeme;
type_const(id->type);
tree_add_attr(id, 4); //add it as attribute
free(t);
input_consume(); // the last ]
return 0;
}
else{
log_error(PRIMARY_EXPRESSION_MODS);
printf("%s has not been initialized\n", nid->lexeme);
return -1;
}
}
else if (token->op_type == VALUEAT){
input_consume(); // throw away '.'
struct token *tmp = input_consume(); //get the identifier
struct hashentry *ifkw = hash_retrieve(kwtable, tmp->lexeme);
if (ifkw != NULL){ //error is a keyword
log_error(PRIMARY_EXPRESSION_MODS);
return -1;
}
else{
tree_mknode(-1); //TODO implement '.'
free_token(token);
stack_pop();
stack_push(PRIMARY_EXPRESSION);
return -1;
}
}
else{ //not a mod of a primary expression
stack_pop();
return 0;
}
}
inline void r_store_stack(CF, R0) {
stack_push(RVAL(r0));
}
int binary_op(struct token *token)
{
switch (token->op_type){
case LOGOR:
tree_mknode(BINARY_OP);
stack_pop();
stack_push(LOGICAL_OR_EXPRESSION);
return 0;
case LOGAND:
tree_mknode(BINARY_OP);
stack_pop();
stack_push(LOGICAL_AND_EXPRESSION);
return 0;
case BWOR:
tree_mknode(BINARY_OP);
stack_pop();
stack_push(INCLUSIVE_OR_EXPRESSION);
return 0;
case BWXOR:
tree_mknode(BINARY_OP);
stack_pop();
stack_push(EXCLUSIVE_OR_EXPRESSION);
return 0;
case BWAND:
tree_mknode(BINARY_OP);
stack_pop();
stack_push(AND_EXPRESSION);
return 0;
case EQUALS: case NOTEQUALS:
tree_mknode(BINARY_OP);
stack_pop();
stack_push(EQUALITY_EXPRESSION);
return 0;
case LT: case LE: case GT: case GE:
tree_mknode(BINARY_OP);
stack_pop();
stack_push(RELATIONAL_EXPRESSION);
return 0;
case SHIFTLEFT: case SHIFTRIGHT:
tree_mknode(BINARY_OP);
stack_pop();
stack_push(SHIFT_EXPRESSION);
return 0;
case PLUS: case MINUS: // + -
tree_mknode(BINARY_OP);
stack_pop();
stack_push(ADDITIVE_EXPRESSION);
return 0;
case MULTIPLY: case DIVIDE: case MODULO: // * / %
tree_mknode(BINARY_OP);
stack_pop();
stack_push(MULTIPLICATIVE_EXPRESSION);
return 0;
case EOE: //direct expression
//tree_mknode(BINARY_OP);
//tree_add_attr(token, -1);
stack_pop(); //pop the binary op
stack_pop(); //pop the second lrvalue
return 0;
default:
log_error(BINARY_OP);
return -1;
}
}
int jump_statement(struct token *token)
{
printf("Hello from jump_statement\n");//DEBUG
// goto label conditional
if( strncmp("goto", token->lexeme, 4) == 0){
tree_mknode(JUMP_STATEMENT);
input_consume(); //consume the goto
free_token(token);
struct token *label = input_consume();
struct token *conditional = input_consume();
if (label->type == ID_KW){
struct hashentry *ifkw = hash_retrieve(kwtable, label->lexeme);
if (ifkw == NULL){//not a keyword, an identifier
struct hashentry *predefined;
struct hashentry *predefined2;
//get symboltable entry for label
predefined = hash_retrieve(symboltable, label->lexeme);
if(predefined == NULL){
predefined = malloc(sizeof(struct hashentry));
predefined->data = malloc(sizeof(struct identifier));
predefined->data->lexeme = label->lexeme;
type_id(predefined->data->type);
//log_error(LABELED_STATEMENT);
//printf("Symbol: %s has not been defined!\n", label->lexeme);
//return -1;
}
//get symboltable entry for conditional
predefined2 = hash_retrieve(symboltable, conditional->lexeme);
if(predefined2 == NULL){
log_error(LABELED_STATEMENT);
printf("Symbol: %s has not been defined!\n", conditional->lexeme);
return -1;
}
struct hashentry *gokw = hash_retrieve(kwtable, "goto");
tree_add_attr(gokw->data, 0);
tree_add_attr(predefined->data, 1);
tree_add_attr(predefined2->data, 2);
printf("Consumed: goto %s %s\n",
label->lexeme, conditional->lexeme);//DEBUG
stack_pop();
stack_push(TOKEN_ENDSTATEMENT);
free(label);
free(conditional);
return 0;
}
else{
log_error(JUMP_STATEMENT);
free_token(label);
free_token(conditional);
return -1;
}
}
else{
printf("Incorrect goto label: %s\n", label->lexeme);//DEBUG
free_token(label);
free_token(conditional);
log_error(JUMP_STATEMENT);
return -1;
}
}
else{
log_error(JUMP_STATEMENT);
return -1;
}
}
/*
* Print Binary Search Tree in inorder fashion without using recursion.
*
* @cur_root : Root of the Binary Search Tree.
*/
void bst_print_inorder_nonrecur(node_t *cur_root)
{
/* Stack of nodes that we have visited but yet to process their left sub-tree. */
Stack_t nodes_stack;
/* Stack of childrens of nodes in the above stack which are yet to be visited. */
Stack_t childs_stack;
stack_init(&nodes_stack);
stack_init(&childs_stack);
if (!cur_root)
{
//NO-OP.
return;
}
/* we have just visited root's parent :). */
stack_push(&childs_stack, cur_root);
while (!stack_empty(&childs_stack) || !stack_empty(&nodes_stack))
{
if (!stack_empty(&childs_stack))
{
node_t *child = (node_t *) stack_pop(&childs_stack);
assert(child);
if (child->left_child)
{
/* As this is inorder we need to process left sub-tree first. */
stack_push(&childs_stack, child->left_child);
/* Once left sub-tree is prcessed we can process its parent then. */
stack_push(&nodes_stack, child);
}
else
{
//Done with left sub-tree.
printf("%d ", child->data);
if (child->right_child)
{
stack_push(&childs_stack, child->right_child);
}
}
}
else
{
assert(!stack_empty(&nodes_stack));
node_t *node = (node_t *) stack_pop(&nodes_stack);
assert(node);
//Done with left sub-tree.
printf("%d ", node->data);
if (node->right_child)
{
stack_push(&childs_stack, node->right_child);
}
}
}
assert(stack_empty(&nodes_stack) && stack_empty(&childs_stack));
}
int main(int argc, char *argv[])
{
char command[32];
int eventsNr, eventId, procId, priority;
int i, iteration;
TStack **eventsStacks;
TQueue *procQ;
// Daca nu exista destule argumente la rularea programului, atunci opreste executia
if (argc < 3)
{
printf("Argumente insuficiente!\n");
return -1;
}
// Seteaza fisierele de intrare si de iesire
freopen(argv[1], "r", stdin);
freopen(argv[2], "w", stdout);
// Citeste numarul de event-uri si creeaza stivele lor
fscanf(stdin, "%d", &eventsNr);
eventsStacks = calloc(eventsNr, sizeof(TStack*));
for (i = 0; i < eventsNr; i++)
{
eventsStacks[i] = stack_new(sizeof(TProcess));
}
// Creeaza coada de prioritati
procQ = queue_new(sizeof(TProcess), compare_process);
// Citeste si executa comenzile din fisierul de intrare
iteration = 0;
while (fscanf(stdin, "%s", command) != EOF)
{
iteration++;
if (strcmp(command, "start") == 0)
{
fscanf(stdin, "%d", &procId);
fscanf(stdin, "%d", &priority);
// Creeaza un proces
TProcess p;
p.id = procId;
p.priority = priority;
p.iteration = iteration;
// Introduce procesul creat in coada de prioritati
queue_push(procQ, &p);
}
else if (strcmp(command, "wait") == 0)
{
fscanf(stdin, "%d", &eventId);
fscanf(stdin, "%d", &procId);
// Creaza o stiva auxiliara
TStack *aux = stack_new(sizeof(TProcess));
// Muta procesele in stiva auxiliara pana cand procesul
// cautat este gasit si mutat in stiva evenimentului
TProcess *p;
while (!queue_isEmpty(procQ))
{
p = queue_pop(procQ);
if (p->id == procId)
{
stack_push(eventsStacks[eventId], p);
free_process(p);
break;
}
stack_push(aux, p);
free_process(p);
}
// Muta procesele din stiva auxiliara inapoi in coada
// de prioritati
while (!stack_isEmpty(aux))
{
p = stack_pop(aux);
queue_push(procQ, p);
free_process(p);
}
// Distruge stiva auxiliara
stack_destroy(&aux, free_process);
}
else if (strcmp(command, "event") == 0)
{
fscanf(stdin, "%d", &eventId);
// Muta procesele din stiva evenimentului in coada
// de prioritati
TProcess *p;
while (!stack_isEmpty(eventsStacks[eventId]))
{
p = stack_pop(eventsStacks[eventId]);
queue_push(procQ, p);
free_process(p);
}
}
else if (strcmp(command, "end") == 0)
{
fscanf(stdin, "%d", &procId);
// Creaza o stiva auxiliara
TStack *aux = stack_new(sizeof(TProcess));
// Muta procesele in stiva auxiliara pana cand procesul
// cautat este gasit si sters
TProcess *p;
while (!queue_isEmpty(procQ))
{
p = queue_pop(procQ);
if (p->id == procId)
{
free_process(p);
break;
}
stack_push(aux, p);
free_process(p);
}
// Muta procesele din stiva auxiliara inapoi in coada
// de prioritati
while (!stack_isEmpty(aux))
{
p = stack_pop(aux);
queue_push(procQ, p);
free_process(p);
}
// Distruge stiva auxiliara
stack_destroy(&aux, free_process);
}
// Afiseaza iteratia
printf("%d\n", iteration);
// Afiseaza coada de prioritati
if (!queue_isEmpty(procQ))
{
queue_print(procQ, print_process);
}
else
{
printf("\n");
}
// Afiseaza stivele
for (i = 0; i < eventsNr; i++)
{
if (!stack_isEmpty(eventsStacks[i]))
{
printf("%d: ", i);
stack_print(eventsStacks[i], print_process);
}
}
printf("\n");
}
// Elibereaza memoria
queue_destroy(&procQ, free_process);
for (i = 0; i < eventsNr; i++)
{
stack_destroy(&eventsStacks[i], free_process);
}
free(eventsStacks);
return 0;
}
/* In order to communicate with builtin_string, builtin_escape will return 2 to
* indicate it did not push anything.
*/
int builtin_escape(interpreter* interp) {
byte what, x0, x1;
++interp->ip;
if (!is_ip_valid(interp)) {
print_error("Escaped character expected");
return 0;
}
switch (curr(interp)) {
case '(':
case ')':
case '[':
case ']':
case '{':
case '}':
case '<':
case '>': return 2;
case 'a': what = '\a'; break;
case 'b': what = '\b'; break;
case 'e': what = '\033'; break;
case 'f': what = '\f'; break;
case 'n': what = '\n'; break;
case 'r': what = '\r'; break;
case 't': what = '\t'; break;
case 'v': what = '\v'; break;
case '"':
case '\\':
case '\'':
case '$':
case '%':
case '`': what = curr(interp); break;
case 'x': {
/* Extract both digits if present. */
++interp->ip;
if (is_ip_valid(interp)) {
x0 = curr(interp);
++interp->ip;
if (is_ip_valid(interp))
x1 = curr(interp);
}
if (!is_ip_valid(interp)) {
print_error("Two hexits expected after \\x");
return 0;
}
/* Convert integer */
if (x0 >= '0' && x0 <= '9')
what = (x0 - '0') << 4;
else if (x0 >= 'a' && x0 <= 'f')
what = (x0 + 10 - 'a') << 4;
else if (x0 >= 'A' && x0 <= 'F')
what = (x0 + 10 - 'A') << 4;
else {
print_error("First \\x hexit is invalid");
return 0;
}
if (x1 >= '0' && x1 <= '9')
what |= (x1 - '0');
else if (x1 >= 'a' && x1 <= 'f')
what |= (x1 + 10 - 'a');
else if (x1 >= 'A' && x1 <= 'F')
what |= (x1 + 10 - 'A');
else {
print_error("Second \\x hexit is invalid");
return 0;
}
} break;
default:
print_error("Invalid escape sequence");
return 0;
}
/* Create and push the string. */
stack_push(interp, create_string(&what, (&what)+1));
return 1;
}
//逆ポーランドモードの関数
void rpn_calc(char* formula)
{
printf("\tRPN Calc Exec : formula = \"%s\"\n",formula);
double answer = 0;
double ret = 0;
int i;
char tmp_buffer[BUFFER_LENGTH];
int tmp_buffer_pointer = 0;
string_clear(tmp_buffer,'\0',BUFFER_LENGTH);
//実数が含まれるか確認
for(i=0;formula[i]!='\0';i++)
{
if(formula[i]=='.')
{
double_flag = 1;
printf("\tRPN Calc Exec : double mode is true\n");
break;
}
}
//計算ループ
for(i=0;formula[i]!='\0';i++)
{
//数値の場合
if((formula[i]>='0'&&formula[i]<='9')||formula[i]=='.')
{
tmp_buffer[tmp_buffer_pointer++] = formula[i];
}
//演算子の場合
else if(formula[i]=='+'||formula[i]=='-'||formula[i]=='*'||formula[i]=='/')
{
if(tmp_buffer[0]!='\0')
{
if(double_flag==1)
ret = my_atof(tmp_buffer);
else
ret = my_atoi(tmp_buffer);
stack_push(ret);
string_clear(tmp_buffer,'\0',BUFFER_LENGTH);
tmp_buffer_pointer = 0;
}
stack_push(calc_exec(formula[i]));
}
//スペースまたはコンマの場合
else if(formula[i]==' '||formula[i]==',')
{
if(tmp_buffer[0]!='\0')
{
if(double_flag==1)
ret = my_atof(tmp_buffer);
else
ret = my_atoi(tmp_buffer);
stack_push(ret);
string_clear(tmp_buffer,'\0',BUFFER_LENGTH);
tmp_buffer_pointer = 0;
}
}
}
//解答を取り出す
answer = stack_pop();
//エラーフラグのチェック
if(error_flag==0)
{
//実数フラグによって表示方法を変更
if(double_flag==0)
{
printf("\tAnswer : %d\n",(int)answer);
}
else
{
printf("\tAnswer : %lf\n",answer);
double_flag = 0;
}
}
else
{
//エラーが起こったときに答えを表示せずにエラー件数を表示して終了
printf("\tError : Total Error -> %d\n",error_flag);
error_flag = 0;
}
}
void testStack() {
// Create
stack* my_stack = NULL;
stack* dummy_stack = NULL;
assert(stack_create(&my_stack) == 0); // Successfully create
assert(stack_create(&dummy_stack) == 0); // Successfully create
assert(stack_get_size(my_stack) == 0); // 0 size
int a = 3;
int b = 4;
double c = 5.12;
char d = 'c';
char str[20] = "Hello World";
// Successful pushes
assert(stack_push(my_stack, &a, sizeof(a)) == 0);
assert(stack_push(my_stack, &b, sizeof(b)) == 0);
assert(stack_push(my_stack, &c, sizeof(c)) == 0);
assert(stack_push(my_stack, &d, sizeof(d)) == 0);
assert(stack_push(my_stack, str, strlen(str)) == 0);
// Bad pushes:
assert(stack_push(NULL, &a, sizeof(a)) != 0);
assert(stack_push(my_stack, NULL, sizeof(a)) != 0);
assert(stack_push(my_stack, &a, 0) != 0);
assert(stack_get_size(my_stack) == 5); // 5 items
int a2;
int b2;
double c2;
char d2;
char str2[20];
// Bad pop:
assert(stack_pop(NULL, &a) != 0);
assert(stack_pop(dummy_stack, &a) != 0);
assert(stack_pop(my_stack, NULL) != 0);
// Successful pop:
assert(stack_get_data_size(my_stack) <= 20);
assert(stack_pop(my_stack, str2) == 0 && strcmp(str,str)==0);
assert(stack_get_data_size(my_stack) == sizeof(d2));
assert(stack_pop(my_stack, &d2) == 0 && d==d2);
assert(stack_get_data_size(my_stack) == sizeof(c2));
assert(stack_pop(my_stack, &c2) == 0 && c==c2);
assert(stack_get_data_size(my_stack) == sizeof(b2));
assert(stack_pop(my_stack, &b2) == 0 && b==b2);
assert(stack_get_data_size(my_stack) == sizeof(a2));
assert(stack_pop(my_stack, &a2) == 0 && a==a2);
// Bad pop
assert(stack_pop(my_stack, &a2) != 0);
// Cleanup
assert(stack_delete(my_stack) == 0); // Successfully create
assert(stack_delete(dummy_stack) == 0); // Successfully create
printf("Stack: Success\n");
}
static int
output(struct eval *eval, struct tok *tok)
{
return stack_push(eval->stk, tok);
}
void instruction_execute_push(_pmachine m, _pinstruction ins)
{
stack_push(&m->stack, (int)ins);
}
int enum_clients_events_cb(const struct event_base *base, const struct event *event, void *arg) {
(void)base;
enum_clients_events_cb_arg_struct *cb_arg = (enum_clients_events_cb_arg_struct *)arg;
if (cb_arg->events_filter(event)) stack_push(&cb_arg->events_stack, event);
return 0;
}
inline void push_has_block(CallFrame* call_frame) {
stack_push(RBOOL(CBOOL(call_frame->scope->block())));
}
int dp_can_connect_str(str *domain, int rec_level) {
struct rdata* head;
struct rdata* l;
struct naptr_rdata* naptr;
struct naptr_rdata* next_naptr;
int ret;
str newdomain;
char uri[MAX_URI_SIZE];
struct avp_stack stack;
int last_order = -1;
int failed = 0;
int found_anything = 0;
str pattern, replacement, result;
stack_reset(&stack);
/* If we're in a recursive call, set the domain-replacement */
if ( rec_level > 0 ) {
stack_push(&stack, domain_replacement_name.s.s, domain->s);
stack.succeeded = 0;
}
if (rec_level > MAX_DDDS_RECURSIONS) {
LM_ERR("too many indirect NAPTRs. Aborting at %.*s.\n", domain->len,
ZSW(domain->s));
return(DP_DDDS_RET_DNSERROR);
}
LM_INFO("looking up Domain itself: %.*s\n",domain->len, ZSW(domain->s));
ret = check_rule(domain,"D2P+sip:dom", 11, &stack);
if (ret == 1) {
LM_INFO("found a match on domain itself\n");
stack_to_avp(&stack);
return(DP_DDDS_RET_POSITIVE);
} else if (ret == 0) {
LM_INFO("no match on domain itself.\n");
stack_reset(&stack);
/* If we're in a recursive call, set the domain-replacement */
if ( rec_level > 0 ) {
stack_push(&stack, domain_replacement_name.s.s, (char *) domain->s);
stack.succeeded = 0;
}
} else {
return(DP_DDDS_RET_DNSERROR); /* actually: DB error */
}
LM_INFO("doing DDDS with %.*s\n",domain->len, ZSW(domain->s));
head = get_record(domain->s, T_NAPTR, RES_ONLY_TYPE);
if (head == 0) {
LM_NOTICE("no NAPTR record found for %.*s.\n",
domain->len, ZSW(domain->s));
return(DP_DDDS_RET_NOTFOUND);
}
LM_DBG("found the following NAPTRs: \n");
for (l = head; l; l = l->next) {
if (l->type != T_NAPTR) {
LM_DBG("found non-NAPTR record.\n");
continue; /*should never happen*/
}
naptr = (struct naptr_rdata*)l->rdata;
if (naptr == 0) {
LM_CRIT("null rdata\n");
continue;
}
LM_DBG("order %u, pref %u, flen %u, flags '%.*s', slen %u, "
"services '%.*s', rlen %u, regexp '%.*s', repl '%s'\n",
naptr->order, naptr->pref,
naptr->flags_len, (int)(naptr->flags_len), ZSW(naptr->flags),
naptr->services_len,
(int)(naptr->services_len), ZSW(naptr->services), naptr->regexp_len,
(int)(naptr->regexp_len), ZSW(naptr->regexp),
ZSW(naptr->repl)
);
}
LM_DBG("sorting...\n");
naptr_sort(&head);
for (l = head; l; l = l->next) {
if (l->type != T_NAPTR) continue; /*should never happen*/
naptr = (struct naptr_rdata*)l->rdata;
if (naptr == 0) {
LM_CRIT("null rdata\n");
continue;
}
LM_DBG("considering order %u, pref %u, flen %u, flags '%.*s', slen %u, "
"services '%.*s', rlen %u, regexp '%.*s', repl '%s'\n",
naptr->order, naptr->pref,
naptr->flags_len, (int)(naptr->flags_len), ZSW(naptr->flags),
naptr->services_len,
(int)(naptr->services_len), ZSW(naptr->services), naptr->regexp_len,
(int)(naptr->regexp_len), ZSW(naptr->regexp),
ZSW(naptr->repl)
);
/*
* New order? then we check whether the had success during the last one.
* If yes, we can leave the loop.
*/
if (last_order != naptr->order) {
last_order = naptr->order;
failed = 0;
if (stack_succeeded(&stack)) {
LM_INFO("we don't need to consider further orders "
"(starting with %d).\n",last_order);
break;
}
} else if (failed) {
LM_INFO("order %d has already failed.\n",last_order);
continue;
}
/*
* NAPTRs we don't care about
*/
if (!IS_D2PNAPTR(naptr))
continue;
/*
* once we've been here, don't return DP_DDDS_RET_NOTFOUND
*/
found_anything = 1;
next_naptr = NULL;
if (l->next && (l->next->type == T_NAPTR)) {
next_naptr = (struct naptr_rdata*)l->next->rdata;
}
/*
* Non-terminal?
*/
if ((naptr->services_len == 7) && !strncasecmp("D2P+SIP", naptr->services,7) && (naptr->flags_len == 0)){
LM_INFO("found non-terminal NAPTR\n");
/*
* This needs to be the only record with this order.
*/
if (next_naptr && (next_naptr->order == naptr->order) && IS_D2PNAPTR(next_naptr)) {
LM_ERR("non-terminal NAPTR needs to be the only one "
"with this order %.*s.\n", domain->len, ZSW(domain->s));
return(DP_DDDS_RET_DNSERROR);
}
newdomain.s = naptr->repl;
newdomain.len = strlen(naptr->repl);
ret = dp_can_connect_str(&newdomain, rec_level + 1);
if (ret == DP_DDDS_RET_POSITIVE) /* succeeded, we're done. */
return(ret);
if (ret == DP_DDDS_RET_NEGATIVE) /* found rules, did not work */
continue; /* look for more rules */
if (ret == DP_DDDS_RET_DNSERROR) /* errors during lookup */
return(ret); /* report them */
if (ret == DP_DDDS_RET_NOTFOUND) /* no entries in linked domain? */
return(ret); /* ok, fine. go with that */
continue; /* not reached */
}
/*
* wrong kind of terminal
*/
if ((naptr->flags_len != 1) || (tolower(naptr->flags[0]) != 'u')) {
LM_ERR("terminal NAPTR needs flag = 'u' and not '%.*s'.\n",
(int)naptr->flags_len, ZSW(naptr->flags));
/*
* It's not that clear what we should do now: Ignore this records or regard it as failed.
* We go with "ignore" for now.
*/
continue;
}
if (parse_naptr_regexp(&(naptr->regexp[0]), naptr->regexp_len,
&pattern, &replacement) < 0) {
LM_ERR("parsing of NAPTR regexp failed\n");
continue;
}
result.s = &(uri[0]);
result.len = MAX_URI_SIZE;
/* Avoid making copies of pattern and replacement */
pattern.s[pattern.len] = (char)0;
replacement.s[replacement.len] = (char)0;
if (reg_replace(pattern.s, replacement.s, domain->s,
&result) < 0) {
pattern.s[pattern.len] = '!';
replacement.s[replacement.len] = '!';
LM_ERR("regexp replace failed\n");
continue;
}
LM_INFO("resulted in replacement: '%.*s'\n", result.len, ZSW(result.s));
pattern.s[pattern.len] = '!';
replacement.s[replacement.len] = '!';
ret = check_rule(&result,naptr->services,naptr->services_len, &stack);
if (ret == 1) {
LM_INFO("positive return\n");
} else if (ret == 0) {
LM_INFO("check_rule failed.\n");
stack_reset(&stack);
/* If we're in a recursive call, set the domain-replacement */
if ( rec_level > 0 ) {
stack_push(&stack, domain_replacement_name.s.s, (char *) domain->s);
stack.succeeded = 0;
}
failed = 1;
} else {
return(DP_DDDS_RET_DNSERROR);
}
}
if (stack_succeeded(&stack)) {
LM_INFO("calling stack_to_avp.\n");
stack_to_avp(&stack);
return(DP_DDDS_RET_POSITIVE);
}
LM_INFO("returning %d.\n",
(found_anything ? DP_DDDS_RET_NEGATIVE : DP_DDDS_RET_NOTFOUND));
return( found_anything ? DP_DDDS_RET_NEGATIVE : DP_DDDS_RET_NOTFOUND );
}
int main(int argc, char *argv[]) {
//sgenrand(time(NULL));
int k, curr_pos, check;
int chunk; /* Repeat experiment in chunks. */
srand(SEED);
printf("# Info: $Header: /home/ma/p/pruess/.cvsroot/manna_range/dmitry_20151021/manna_stack_clean_edited.c,v 1.2 2015/10/21 11:37:00 pruess Exp $\n");
preamble(argc, argv);
PRINT_PARAM(SEED, "%lu");
PRINT_PARAM(LENGTH, "%lu");
PRINT_PARAM(DROP_LOCATION, "%lu");
PRINT_PARAM(total_malloced, "%lli");
printf("# Info: Expected avalanche size: <s>(x) = 1+(1/2) (<s>(x+1)+<s>(x-1)), BC <s>(0)=0, <s>(L+1)=0, solved by <s>(x)=(L+1-x)x/2.\n");
printf("# Info: Here L=LENGTH=%lu and x=DROP_LOCATION+1=%lu, so expect %g\n", LENGTH, DROP_LOCATION+1, ((double)(DROP_LOCATION+1))*((double)(LENGTH-DROP_LOCATION))/2.);
for (chunk=1; ((chunk<=NUM_CHUNKS) || (NUM_CHUNKS<0)); chunk++) {
MOMENTS_INIT(size);
for (drop = 0; drop < N_ROLLS; drop++) { // big droppping cycle
size=0;
/*
printf("(%i.)", drop);
for(k = 0; k<LENGTH; k++) {
printf("\%i", lattice[k]);
}
printf("\n");
*/
#if (1)
if(check_cell(DROP_LOCATION) == 0) {
lattice[DROP_LOCATION] = 1;
}
else {
stack_push(DROP_LOCATION);
stack_push(DROP_LOCATION);
lattice[DROP_LOCATION] = 0;
}
/* If validated, optimse by turning stack operations into macros,
* optime random number drawing (rather than having doubles in the tree
* have integers there and draw an integer to compare against),
* optimise the shuffling of particles.
*
* I have added MOMENT macros for size. */
while(stack_used != 0) {
curr_pos = stack_pop();
/* This code with the "check" looks clumsy. I suppose
* you are "following through" topplings? I would think
* there is no point doing this later. Anyway, we validate
* this code and take it from there. */
do {
curr_pos = move_ball(curr_pos);
if(curr_pos >= LENGTH || curr_pos < 0) {
check = 0 ;
}
/* Why not just "else" instead of the "if"? */
if(curr_pos < LENGTH && curr_pos >= 0) {
check = check_cell(curr_pos);
if (check == 1) {
stack_push(curr_pos);
}
else {
check = 0;
}
}
}while(check != 0);
}/* end of while(stack_used != 0) look */
#endif
#if (0)
{
int npos;
#define PUSH(a) stack[stack_used++]=(a)
#define POP(a) (a)=stack[--stack_used]
if (lattice[DROP_LOCATION]++==1) {
PUSH(DROP_LOCATION);
while(stack_used) {
size++;
POP(curr_pos);
do {
lattice[curr_pos]-=2;
npos=curr_pos+ ( (rand()>RAND_MAX/2) ? 1 : -1);
if ((npos>=0) && (npos<LENGTH)) {
if (lattice[npos]++==1) {PUSH(npos);}
}
if ((npos>=0) && (npos<LENGTH)) {
if (lattice[npos]++==1) {PUSH(npos);}
}
} while (lattice[curr_pos]>1);
}
}
}
#endif
//printf("size is %i\n", size);
MOMENTS(size,size);
} /* end of iterations loop */
MOMENTS_OUT(size);
} /* chunk */
postamble();
}
inline void push_stack_local(CallFrame* call_frame, intptr_t which) {
stack_push(stack_local(which));
}
long double evaluate(string_t* expr) {
int i, length;
double result, a, b;
char as_string[2] = "\0";
char top, op, unused;
stack values, ops;
string_t formatted;
init_string(&formatted, "");
format_expression_string(expr, &formatted);
stack_new(&values, sizeof(double));
stack_new(&ops, sizeof(char));
length = strlen(formatted.string);
for(i = 0; i < length; i++) {
/* Current token is a whitespace, skip it */
if (formatted.string[i] == ' ')
continue;
/* Current token is a number, push it to stack for numbers */
if((formatted.string[i] >= '0' && formatted.string[i] <= '9') || (formatted.string[i] == '.')) {
string_t buf;
init_string(&buf, "");
/* There may be more than one digits in number */
while((i < length) &&
(((formatted.string[i] >= '0') && (formatted.string[i] <= '9')) || (formatted.string[i] == '.'))) {
as_string[0] = formatted.string[i++];
append(&buf, as_string);
}
result = atof(buf.string);
stack_push(&values, &result);
} else if(formatted.string[i] == '(') {
/* Current token is an opening brace, push it to 'ops' */
as_string[0] = formatted.string[i];
stack_push(&ops, as_string);
} else if(formatted.string[i] == ')') {
/* Closing brace encountered, solve entire brace */
while(TRUE) {
stack_peek(&ops, &top);
if(top == '(') break;
stack_pop(&values, &a);
stack_pop(&values, &b);
stack_pop(&ops, &op);
result = apply_op(op, a, b);
stack_push(&values, &result);
}
stack_pop(&ops, &unused); /* pop ( */
} else if(is_operator(formatted.string[i])) {
/* While top of 'ops' has same or greater precedence to current
token, which is an operator. Apply operator on top of 'ops'
to top two elements in values stack */
while(TRUE) {
top = '(';
if(!stack_empty(&ops))
stack_peek(&ops, &top);
if(stack_empty(&ops) || !has_precedence(formatted.string[i], top)) break;
stack_pop(&values, &a);
stack_pop(&values, &b);
stack_pop(&ops, &op);
result = apply_op(op, a, b);
/* !!!!!!!!!!!!!!!!!!!!
if(division_by_zero) {
return -255;
} */
stack_push(&values, &result);
}
/* Push current token to 'ops'. */
as_string[0] = formatted.string[i];
stack_push(&ops, as_string);
}
}
/* Entire expression has been parsed at this point, apply remaining
ops to remaining values */
while(!stack_empty(&ops)) {
stack_pop(&values, &a);
stack_pop(&values, &b);
stack_pop(&ops, &op);
result = apply_op(op, a, b);
stack_push(&values, &result);
}
/* Top of 'values' contains result, return it */
stack_pop(&values, &result);
return result;
}
void append_call_stack(char type){
obj * o = create_call_block(type, call_stack_top);
stack_push(call_stack, o);
call_stack_top = (call_block*)o->data;
}
static __inline void
push(struct value *v)
{
stack_push(&bmachine.stack, v);
}
int
eval_instruction(struct vm_context **ctx)
{
struct symbol *sym;
struct object *value;
struct compound_proc *template;
switch (INS_AT((*ctx)->pc)->op) {
case NONE:
printf("Error: tried to execute a NONE op\n");
exit(1);
break;
case PUSH:
/* printf("PUSH instruction\n"); */
stack_push((*ctx)->stk, INS_AT((*ctx)->pc)->arg);
INC_REF(INS_AT((*ctx)->pc)->arg);
++(*ctx)->pc->offset;
break;
case POP:
/* printf("POP instruction\n"); */
value = stack_pop((*ctx)->stk);
DEC_REF(value);
++(*ctx)->pc->offset;
break;
case LOOKUP:
/* printf("LOOKUP instruction\n"); */
assert(INS_AT((*ctx)->pc)->arg->type->code == SYMBOL_TYPE);
sym = container_of(INS_AT((*ctx)->pc)->arg, struct symbol, obj);
value = env_lookup((*ctx)->env, sym->value);
if (! value) {
char buf[1024];
debug_loc_str(INS_AT((*ctx)->pc)->arg, buf, 1024);
printf("%s: unbound name: %s\n", buf, sym->value);
exit(1);
}
stack_push((*ctx)->stk, value);
INC_REF(value);
++(*ctx)->pc->offset;
break;
case CALL:
case TAILCALL:
/* printf("CALL instruction @ %p\n", *pc); */
eval_call(ctx);
break;
case RET:
value = stack_pop((*ctx)->stk);
struct object *orig_env = stack_pop((*ctx)->stk);
assert(orig_env->type->code == ENVIRONMENT_TYPE);
DEC_REF(orig_env);
struct object *retaddr = stack_pop((*ctx)->stk);
/* printf("RET instruction @ %p to %p\n", *pc, retaddr->cval); */
stack_push((*ctx)->stk, value);
DEC_REF(&(*ctx)->env->obj);
(*ctx)->env = container_of(orig_env, struct environment, obj);
if (retaddr == NULL) {
(*ctx)->pc = NULL;
return 1;
}
assert(retaddr->type->code == CODEPTR_TYPE);
*(*ctx)->pc = *container_of(retaddr, struct codeptr, obj);
/* XXX: */
/* DEC_REF(retaddr); */
break;
case DEFINE:
/* printf("DEFINE instruction\n"); */
value = stack_pop((*ctx)->stk);
assert(INS_AT((*ctx)->pc)->arg->type->code == SYMBOL_TYPE);
sym = container_of(INS_AT((*ctx)->pc)->arg, struct symbol, obj);
env_define((*ctx)->env, sym->value, value);
DEC_REF(value);
++(*ctx)->pc->offset;
break;
case SET:
value = stack_pop((*ctx)->stk);
assert(INS_AT((*ctx)->pc)->arg->type->code == SYMBOL_TYPE);
sym = container_of(INS_AT((*ctx)->pc)->arg, struct symbol, obj);
env_set((*ctx)->env, sym->value, value);
DEC_REF(value);
++(*ctx)->pc->offset;
break;
case LAMBDA:
/* printf("LAMBDA instruction\n"); */
value = INS_AT((*ctx)->pc)->arg;
assert(INS_AT((*ctx)->pc)->arg->type->code == PROCEDURE_TYPE);
/* setup_stack_and_mttrs() determines the stack to use after
* cache-as-ram is torn down as well as the MTRR settings to use. */
static void *setup_stack_and_mttrs(void)
{
unsigned long top_of_stack;
int num_mtrrs;
uint32_t *slot;
uint32_t mtrr_mask_upper;
uint32_t top_of_ram;
/* Top of stack needs to be aligned to a 4-byte boundary. */
top_of_stack = choose_top_of_stack() & ~3;
slot = (void *)top_of_stack;
num_mtrrs = 0;
/* The upper bits of the MTRR mask need to set according to the number
* of physical address bits. */
mtrr_mask_upper = (1 << ((cpuid_eax(0x80000008) & 0xff) - 32)) - 1;
/* The order for each MTRR is value then base with upper 32-bits of
* each value coming before the lower 32-bits. The reasoning for
* this ordering is to create a stack layout like the following:
* +0: Number of MTRRs
* +4: MTRR base 0 31:0
* +8: MTRR base 0 63:32
* +12: MTRR mask 0 31:0
* +16: MTRR mask 0 63:32
* +20: MTRR base 1 31:0
* +24: MTRR base 1 63:32
* +28: MTRR mask 1 31:0
* +32: MTRR mask 1 63:32
*/
/* Cache the ROM as WP just below 4GiB. */
slot = stack_push(slot, mtrr_mask_upper); /* upper mask */
slot = stack_push(slot, ~(CONFIG_ROM_SIZE - 1) | MTRRphysMaskValid);
slot = stack_push(slot, 0); /* upper base */
slot = stack_push(slot, ~(CONFIG_ROM_SIZE - 1) | MTRR_TYPE_WRPROT);
num_mtrrs++;
/* Cache RAM as WB from 0 -> CONFIG_RAMTOP. */
slot = stack_push(slot, mtrr_mask_upper); /* upper mask */
slot = stack_push(slot, ~(CONFIG_RAMTOP - 1) | MTRRphysMaskValid);
slot = stack_push(slot, 0); /* upper base */
slot = stack_push(slot, 0 | MTRR_TYPE_WRBACK);
num_mtrrs++;
top_of_ram = (uint32_t)cbmem_top();
/* Cache 8MiB below the top of ram. The top of ram under 4GiB is the
* start of the TSEG region. It is required to be 8MiB aligned. Set
* this area as cacheable so it can be used later for ramstage before
* setting up the entire RAM as cacheable. */
slot = stack_push(slot, mtrr_mask_upper); /* upper mask */
slot = stack_push(slot, ~((8 << 20) - 1) | MTRRphysMaskValid);
slot = stack_push(slot, 0); /* upper base */
slot = stack_push(slot, (top_of_ram - (8 << 20)) | MTRR_TYPE_WRBACK);
num_mtrrs++;
/* Cache 8MiB at the top of ram. Top of ram is where the TSEG
* region resides. However, it is not restricted to SMM mode until
* SMM has been relocated. By setting the region to cacheable it
* provides faster access when relocating the SMM handler as well
* as using the TSEG region for other purposes. */
slot = stack_push(slot, mtrr_mask_upper); /* upper mask */
slot = stack_push(slot, ~((8 << 20) - 1) | MTRRphysMaskValid);
slot = stack_push(slot, 0); /* upper base */
slot = stack_push(slot, top_of_ram | MTRR_TYPE_WRBACK);
num_mtrrs++;
/* Save the number of MTRRs to setup. Return the stack location
* pointing to the number of MTRRs. */
slot = stack_push(slot, num_mtrrs);
return slot;
}