void execute_tablegetelem(instruction* instr){
//printf("exec_tableget\n");
avm_memcell* lv = avm_translate_operand(&instr->result,(avm_memcell*) 0);
avm_memcell* t = avm_translate_operand(&instr->arg1,(avm_memcell*) 0);
avm_memcell* i = avm_translate_operand(&instr->arg2,&ax);
assert(lv && (&stack[AVM_STACKSIZE-1] >= lv && lv > &stack[top] || lv == &retval));
assert(t && &stack[AVM_STACKSIZE-1] >= t && t > &stack[top]);
assert(i);
avm_memcellclear(lv);
lv->type = nil_m;
if(t->type != table_m){
avm_error("illigal use of type as table!");
}
else{
avm_memcell* content = avm_tablegetelem(t->data.tableVal,i);
if(content)
avm_assign(lv,content);
else{
char* ts = avm_tostring(t);
char* is = avm_tostring(i);
avm_warning("not found!");
free(ts);
free(is);
}
}
}
void execute_tablegetelem (instruction* instr){
avm_memcell* lv = avm_translate_operand(&instr->result, (avm_memcell*) 0);
avm_memcell* t = avm_translate_operand(&instr->arg1, (avm_memcell*) 0);
avm_memcell* i = avm_translate_operand(&instr->result, &ax);
// assert(lv && &stack[N-1] >= lv && lv > &stack[top] || lv == &retval);
// assert(t && stack[N-1] >= t && t > &stack[top]);
assert(i);
avm_memcellclear(lv);
lv->type = nil_m;
if(t->type != table_m)
{
avm_error("illegal use of type %s as table!\n", typeStrings[t->type]);
executionFinished = 1;
}
else
{
avm_memcell* content = avm_tablegetelem(t->data.tableVal, i);
if(content)
{
avm_assign(lv, content);
}
else
{
char* ts = avm_tostring(t);
char* is = avm_tostring(i);
avm_warning("%s[%s] not found!\n", ts, is);
free(ts);
free(is);
}
}
}
void avm_assign(avm_memcell* lv, avm_memcell* rv){
if(lv == rv)
{
return;
}
if((lv->type == table_m)&&(rv->type == table_m)&&(lv->data.tableVal == rv->data.tableVal))
{
return;
}
if(rv->type == undef_m)
{
avm_warning("Assigning from 'undef' content!\n");
}
avm_memcellclear(lv);
memcpy(lv, rv, sizeof(avm_memcell));
if(lv->type == string_m)
{
lv->data.strVal = strdup(rv->data.strVal);
}
else if(lv->type = table_m)
{
avm_tableincrefcounter(lv->data.tableVal);
}
}
void avm_tablebucketsdestroy(avm_table_bucket** p){
unsigned i;
avm_table_bucket* b;
for(i = 0; i < AVM_TABLE_HASHSIZE; i++)
{
for(b = *p; b;)
{
avm_table_bucket* del = b;
b = b->next;
avm_memcellclear(&del->key);
avm_memcellclear(&del->value);
free(del);
}
p[i] = (avm_table_bucket*) 0;
}
}
void execute_funcexit(instruction *unused){
unsigned oldTop=top;
top=avm_get_envvalue(topsp+AVM_SAVEDTOP_OFFSET);
pc=avm_get_envvalue(topsp+AVM_SAVEDPC_OFFSET);
topsp=avm_get_envvalue(topsp+AVM_SAVEDTOPSP_OFFSET);
while (oldTop++<=top)
avm_memcellclear(&stack[oldTop]);
}
void execute_newtable(instruction* instr){
//printf("exec_newtable\n");
avm_memcell* lv = avm_translate_operand(&instr->result,(avm_memcell*) 0);
assert(lv && (&stack[AVM_STACKSIZE-1] >= lv && lv > &stack[top] || lv == &retval));
avm_memcellclear(lv);
lv->type = table_m;
lv->data.tableVal = avm_tablenew();
avm_tableincrefcounter(lv->data.tableVal);
}
void libfunc_typeof(void){
unsigned n = avm_totalactuals();
if(n != 1)
avm_error("one argument expected in 'typeof'!");
else{
avm_memcellclear(&retval);
retval.type = string_m;
retval.data.strVal = strdup(typeStrings[avm_getactual(0)->type]);
}
}
void libfunc_totalarguments(void){
unsigned p_topsp = avm_get_envvalue(topsp + AVM_SAVEDTOPSP_OFFSET);
avm_memcellclear(&retval);
if(!p_topsp){
avm_error("'totalarguments' called outside a function!");
retval.type = nil_m;
}
else{
retval.type = number_m;
retval.data.numVal = avm_get_envvalue(p_topsp + AVM_NUMACTUALS_OFFSET);
}
}
void libfunc_input(void){
unsigned n=avm_totalactuals();
if(n!=0){
avm_error("no argument expected at 'input'");
return ;
}
char* input=malloc(sizeof(char)*100);
fgets(input,99,stdin);
avm_memcellclear(&retval);
retval.type=string_m;
retval.data.strVal=input;
}
void libfunc_totalarguments(void){
unsigned p_topsp=avm_get_envvalue(topsp+AVM_SAVEDTOPSP_OFFSET);
avm_memcellclear(&retval);
unsigned i;
if(p_topsp>=AVM_STACKSIZE-1-programVarOffset){
avm_error("'totalarguments' called outside of a function");
retval.type=nil_m;
}
else {
retval.type=number_m;
retval.data.numVal=avm_get_envvalue(p_topsp+AVM_NUMACTUALS_OFFSET);
}
}
void libfunc_strtonum(void){
unsigned n=avm_totalactuals();
avm_memcellclear(&retval);
if(n==0){
avm_error("too few arguments for strtonum");
retval.type=nil_m;
return;
}
avm_memcell* m=avm_getactual(0);
if(m->type!=string_m){
avm_error("argument of strtonum must be a string");
retval.type=nil_m;
return;
}
retval.type=number_m;
retval.data.numVal=atof(m->data.strVal);
}
void execute_arithmetic (instruction* instr) {
avm_memcell* lv = avm_translate_operand(instr->result,(avm_memcell*)0);
avm_memcell* rv1= avm_translate_operand(instr->arg1,&ax);
avm_memcell* rv2= avm_translate_operand(instr->arg2,&bx);
assert(lv && ( (&stack[AVM_STACKSIZE]>= lv && &stack[top]<lv )|| lv==&retval ));
assert(rv1 && rv2);
if (rv1->type !=number_m || rv2->type !=number_m ) {
avm_error("not a number arithmetic!\n");
executionFinished=1;
}
else {
arithmetic_func_t op=arithmeticFuncs[instr->opcode - add_v];
avm_memcellclear(lv);
lv->type = number_m;
lv->data.numVal = (*op)(rv1->data.numVal,rv2->data.numVal);
}
//printf("DEBUG VALUE:%d\n",(int)lv->data.numVal);
}
void libfunc_argument(void){
unsigned p_topsp=avm_get_envvalue(topsp+AVM_SAVEDTOPSP_OFFSET);
avm_memcellclear(&retval);
unsigned i;
if(p_topsp>=AVM_STACKSIZE-1-programVarOffset){
avm_error("'argument' called outside of a function");
retval.type=nil_m;
}
unsigned n=avm_totalactuals();
if(n!=1){
avm_error("one argument expected at 'argument'");
return ;
}
avm_memcell* m=avm_getactual(0);
if(m->type!=number_m){
avm_error("argument of 'argument' must be a number");
return;
}
int doubletoint=m->data.numVal;
retval=stack[p_topsp+AVM_STACKENV_SIZE +1 +doubletoint];
}
