void check_stmt(tree t) {
for( ; t != NULL; t = t->next ) {
switch (t->kind) {
case If:
case Elseif:
if( check_expr(t->first) != Boolean ) {
print_error("Invalid IF statement.", t);
}
check_stmt(t->second);
check_stmt(t->third);
continue;
case Else:
check_stmt(t->first);
continue;
case Exit:
if(check_expr(t->first) != Boolean) {
print_error("exit when must produce a boolean.", t);
}
continue;
case Assign:
if(t->first->kind == Obracket | check_expr(t->first) != check_expr(t->second)) {
print_error("Invalid assignment statement.", t);
}
continue;
case For:
new_scope();
declare_var(id_name(t->first->value), Integer);
if(check_expr(t->second->first) != Integer | check_expr(t->second->second) != Integer)//TODO or add a range check
print_error("Invalid range.", t->second);
check_stmt(t->third);
end_scope();
continue;
case Declaration:;
if(t->second->kind == Array) {
for(tree cur = t->first; cur != NULL; cur = cur->next)
declare_array(id_name(cur->value), t->second->second->kind);
} else {
for(tree cur = t->first; cur != NULL; cur = cur->next)
declare_var(id_name(cur->value), t->second->kind);
}
continue;
case Declare:
new_scope();
check_stmt(t->first);
check_stmt(t->second);
end_scope();
continue;
default:
print_error("Token of this type not checked by check_stmt.", t);
continue;
}
}
}
declare_parameters()
{
struct t_param *current=param_head;
int t_argnum=1;
while(current){
printf("%s %s;\n",spec_get_param_type(procname,t_argnum-1),current->name);
declare_var(current->name,NS_VAR,lookup(itoa(t_argnum++),procnum));
current=current->next;
}
}
/**
@par Detailed Description:
*/
char* Trick::MemoryManager::mm_strdup( const char* s) {
char *allocation;
int extent;
/** @par Design: */
/** @li Allocate sufficient space for the duplicate character string. */
extent = (int)strlen(s)+1;
/** @li Allocate the duplicate character string */
allocation = (char*)declare_var(TRICK_CHARACTER, "", 0, "", 1, &extent);
/** @li Copy the contents of the original character string to the duplicate. */
/** @li Return the address of the new allocation.*/
return( strcpy(allocation, s));
}
int Parser::make_func() {
uint32_t espBgn, params = 0;
std::string funcName = tok.next().val;
funcs.now++; funcs.inside = true;
if(tok.skip("(")) { // get params
do { declare_var(); tok.skip(); params++; } while(tok.skip(","));
tok.skip(")");
}
funcs.append(funcName, ntv.count, params);
undef_funcs.rep_undef(funcName, ntv.count);
ntv.genas("push ebp");
ntv.genas("mov ebp esp");
espBgn = ntv.count + 2; ntv.genas("sub esp 0"); // align
uint32_t pos_save[128], i;
for(i = 0; i < params; i++) {
ntv.gencode(0x8b); ntv.gencode(0x45);
ntv.gencode(0x08 + (params - i - 1) * ADDR_SIZE);
ntv.gencode(0x89); ntv.gencode(0x44); ntv.gencode(0x24);
pos_save[i] = ntv.count; ntv.gencode(0x00);
}
eval(0, BLOCK_FUNC);
for(int i = 0; i < return_list.count; i++) {
ntv.gencode_int32_insert(ntv.count - return_list.addr_list[i] - 4, return_list.addr_list[i]);
} return_list.count = 0;
ntv.genas("add esp %u", ADDR_SIZE * (var.focus().size() + 6)); // add esp nn
ntv.gencode(0xc9);// leave
ntv.gencode(0xc3);// ret
ntv.gencode_int32_insert(ADDR_SIZE * (var.focus().size() + 6), espBgn);
for(i = 1; i <= params; i++) {
ntv.code[pos_save[i - 1]] =
256 - ADDR_SIZE * i + (((var.focus().size() + 6) * ADDR_SIZE) - 4);
}
#ifdef DEBUG
printf("%s() has %u funcs or vars\n", funcName.c_str(), var.focus().size());
#endif
return 0;
}