void Interpreter::swap() {
StackVar upVar = _stack.top();
VarType upType = _typeStack.top();
popVar();
StackVar downVar = _stack.top();
VarType downType = _typeStack.top();
popVar();
pushVar(upType, upVar);
pushVar(downType, downVar);
}
int borrowBook()
{
Var *varList = pushVar();
printf("\n... Borrowing Books ...\n");
currentLimit = borrowLimit - holdNum;
if (0 > currentLimit - borrowNum) {
printf("You have exceeded your borrowing limit!\n");
popVar(varList);
return -1;
}
currentLimit -= borrowNum;
holdNum += borrowNum;
if (1 == borrowNum)
printf("You've just borrowed [%d] book!\n", borrowNum);
else
printf("You've just borrowed [%d] books!\n", borrowNum);
if (1 == currentLimit)
printf("Now you can borrow [%d] more book.\n", currentLimit);
else
printf("Now you can borrow [%d] more books.\n", currentLimit);
/* set the value for return */
varList[HOLDNUM].val.i = holdNum;
popVar(varList);
return holdNum;
}
int returnBook()
{
Var *varList = pushVar();
printf("\n... Returning Books ...\n");
printf("Thank you, %s! ", name);
holdNum -= returnNum;
if (1 == returnNum)
printf("You've just returned [%d] book!\n", returnNum);
else
printf("You've just returned [%d] books!\n", returnNum);
currentLimit = borrowLimit - holdNum;
if (1 == currentLimit)
printf("Now you can borrow [%d] more book.\n", currentLimit);
else
printf("Now you can borrow [%d] more books.\n", currentLimit);
/* set the value for return */
varList[HOLDNUM].val.i = holdNum;
popVar(varList);
return holdNum;
}
void Interpreter::pushDouble(double d)
{
StackVar var;
var.d = d;
pushVar(VT_DOUBLE, var);
//cout << "__PUSHED DOUBLE" << d << endl;
}
void Interpreter::pushInt(int64_t i)
{
StackVar var;
var.i = i;
pushVar(VT_INT, var);
//cout << "__PUSHED INT" << i << endl;
}
void professor()
{
Var *varList = pushVar();
borrowLimit = 10;
printf("Dear Professor %s, you can borrow [%d] books in total! Enjoy the books!\n", name, borrowLimit);
staff();
popVar(varList);
}
int32 opcodeType8() {
int opcode = getByteFromScript();
if (!opcode)
return (-21);
if (opcode > 0x100)
return (-21);
if (opcode < ARRAYSIZE(opcodeTablePtr) && opcodeTablePtr[opcode]) {
pushVar(opcodeTablePtr[opcode]());
return (0);
} else {
warning("Unsupported opcode %d in opcode type 8", opcode);
pushVar(0);
// exit(1);
}
return 0;
}
void staff()
{
Var *varList = pushVar();
holdNum = returnBook();
if (0 <= holdNum)
printf("[Number of books borrowed: %d]\n", holdNum);
else
printf("ERROR! You are trying to return more books than you've borrowed!\n");
holdNum = borrowBook();
if (0 <= holdNum)
printf("[Number of books borrowed: %d]\n", holdNum);
else
printf("ERROR! You are trying to borrow more books than your borrowing limit!\n");
popVar(varList);
}
void genbf_init_declarator(struct init_declarator *a)
{
struct type *vt;
int i;
/* push this variable */
pushVar(genbf_declarator2_get_identifier(a->v1->v2), 1);
/* then use genbf_declarator to get its type */
vt = genbf_declarator(a->v1, NULL);
curvar->type = vt;
curvar->width = vt->size;
/* and push it in BF */
for (i = 0; i < curvar->width; i++)
BF_PUSH;
if (a->assign) {
UNIMPL("init_declarator with assignment");
}
}
void library(char *_name, char *_id, int _holdNum, int _returnNum, int _borrowNum)
{
/* initialize all global variables */
name = realloc(name, strlen(_name)+1);
strncpy(name, _name, strlen(_name)+1);
id = realloc(id, strlen(_id)+1);
strncpy(id, _id, strlen(_id)+1);
holdNum = _holdNum;
returnNum = _returnNum;
borrowNum = _borrowNum;
Var *varList = pushVar();
printf("\n** Dear %s, welcome to the CUHK Library **\n", name);
printf("[Number of books borrowed: %d]\n", holdNum);
if (id[0] == 'p')
professor();
else
staff();
popVar(varList);
}
void Interpreter::loadString() {
StackVar var;
var.strId = getNext2Bytes();
pushVar(VT_STRING, var);
}
