public string Visit(CIL_FunctionDef node)
{
string solve = "";
context_function = new Dictionary <string, string>();
ReservLocalArgs = 4 * node.Locals.Params.Count;
int idx = 0;
foreach (var item in node.Params.Params)
{
context_function.Add(item, $"{4 * (idx++)}($fp)");
}
idx = 0;
foreach (var item in node.Locals.Params)
{
context_function.Add(item, $"{4 * (idx++)}($sp)");
}
solve += $"\t {node.Name}:\n";
// reserv global variable
solve += $"\t addiu $sp, $sp, -{ ReservLocalArgs }\n";
foreach (var item in node.Corpus.ListNode)
{
var subsolve = item?.Visit(this);
if (subsolve != null)
{
solve += subsolve;
}
}
return(solve);
}
public string Visit(CIL_FunctionDef node)
{
Dictionary <string, int> PosMem = new Dictionary <string, int>();
int esp = mem.GetESP();
esp += node.Params.Params.Count;
for (int i = 0; i < node.Params.Params.Count; i++)
{
PosMem.Add(node.Params.Params[i], esp--);
}
foreach (var item in node.Locals.Params)
{
PosMem.Add(item, mem.Push(0));
}
Dictionary <string, int> LabelsDir = new Dictionary <string, int>();
for (int i = 0; i < node.Corpus.ListNode.Count; i++)
{
if (node.Corpus.ListNode[i] is CIL_Label)
{
LabelsDir.Add(((CIL_Label)node.Corpus.ListNode[i]).Label, i + 1);
}
}
variableaddr.Push(PosMem);
int idx = 0;
while (true)
{
var st = node.Corpus.ListNode[idx];
if (st is CIL_Goto)
{
idx = LabelsDir[((CIL_Goto)st).Label];
}
else if (st is CIL_If_Goto)
{
var n = (CIL_If_Goto)st;
var idx1 = LabelsDir[((CIL_If_Goto)st).Label];
int v = GetValueFromId(n.Condition);
if (v != 0)
{
idx = idx1;
}
else
{
idx++;
}
}
else if (st is CIL_Return)
{
st.Visit(this);
break;
}
else
{
st.Visit(this);
idx++;
}
}
variableaddr.Pop();
return("");
}
