public void Visit(SignNode n)
{
var children = n.GetChildren();
var table = (FunctionSymbolTableEntry)n.SymTable;
var resultOffset = table.MemoryLayout.GetOffset(n.TemporaryVariableName);
var operandVarOffsets = new List <int>();
foreach (var child in children)
{
child.Accept(this);
var offset = table.MemoryLayout.GetOffset(child.TemporaryVariableName);
operandVarOffsets.Add(offset);
}
if (n.Sign == Sign.Minus)
{
_writer.WriteComment($"SignNode '{n.Sign}' at ({n.Token.StartLine}:{n.Token.StartColumn})");
var opReg = PopRegister();
var destReg = PopRegister();
_writer.WriteInstruction(Instructions.Lw, opReg, $"{operandVarOffsets[0]}({FSPReg})");
_writer.WriteInstruction(Instructions.Sub, destReg, destReg, opReg);
_writer.WriteInstruction(Instructions.Sw, $"{resultOffset}({FSPReg})", destReg);
PushRegister(destReg);
PushRegister(opReg);
}
}
public void Visit(SignNode n)
{
var child = n.GetChildren().Single();
child.Accept(this);
n.ExprType = child.ExprType;
}
public void Visit(SignNode n)
{
PrintDOTIDLabel(n, n.Sign.ToString());
PrintDOTParentChild(n);
foreach (var child in n.GetChildren())
{
child.Accept(this);
}
}
public void Visit(SignNode n)
{
var children = n.GetChildren();
foreach (var child in children)
{
child.SymTable = n.SymTable;
child.Accept(this);
}
}
public void Visit(SignNode n)
{
var table = (FunctionSymbolTableEntry)n.SymTable;
n.TemporaryVariableName = table.MemoryLayout.AddTemporaryVariable();
var children = n.GetChildren();
foreach (var child in children)
{
child.Accept(this);
}
}
