public void Visit(MultOpNode n)
{
var children = n.GetChildren();
foreach (var node in n.GetChildren())
{
node.SymTable = n.SymTable;
node.Accept(this);
}
if (!string.Equals(children[0].ExprType.Type, TypeConstants.IntType) &&
!string.Equals(children[1].ExprType.Type, TypeConstants.IntType) &&
!string.Equals(children[0].ExprType.Type, TypeConstants.FloatType) &&
!string.Equals(children[1].ExprType.Type, TypeConstants.FloatType))
{
_errorStream.WriteLine($"Operation must be done with numerical operands! ({n.Token.StartLine}:{n.Token.StartColumn})");
Console.WriteLine($"Error: Operation must be done with numerical operands! ({n.Token.StartLine}:{n.Token.StartColumn})");
}
if (children[0].ExprType.Dims.Count > 0 || children[1].ExprType.Dims.Count > 0)
{
_errorStream.WriteLine($"Cannot multiply/divide arrays! ({n.Token.StartLine}:{n.Token.StartColumn})");
Console.WriteLine($"Error: Cannot multiply/divide arrays! ({n.Token.StartLine}:{n.Token.StartColumn})");
}
else if (!string.Equals(children[0].ExprType.Type, children[1].ExprType.Type))
{
_errorStream.WriteLine($"Operand types don't match! {children[1].ExprType.Type} <-> {children[0].ExprType.Type} ({n.Token.StartLine}:{n.Token.StartColumn})");
Console.WriteLine($"Error: Operand types don't match! {children[1].ExprType.Type} <-> {children[0].ExprType.Type} ({n.Token.StartLine}:{n.Token.StartColumn})");
}
n.ExprType = children[0].ExprType;
}
public void Visit(MultOpNode n)
{
PrintDOTIDLabel(n, n.Op.ToString());
PrintDOTParentChild(n);
foreach (var child in n.GetChildren())
{
child.Accept(this);
}
}
public void Visit(MultOpNode n)
{
var children = n.GetChildren();
foreach (var child in children)
{
child.SymTable = n.SymTable;
child.Accept(this);
}
}
public void Visit(MultOpNode n)
{
var table = (FunctionSymbolTableEntry)n.SymTable;
n.TemporaryVariableName = table.MemoryLayout.AddTemporaryVariable();
var children = n.GetChildren();
foreach (var child in children)
{
child.Accept(this);
}
}
public void Visit(MultOpNode 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);
}
Instructions instruction;
switch (n.Op)
{
case MultOp.Multiply:
instruction = Instructions.Mul;
break;
case MultOp.Divide:
instruction = Instructions.Div;
break;
case MultOp.And:
instruction = Instructions.And;
break;
default:
throw new InvalidOperationException("Unknown op");
}
_writer.WriteComment($"MultOp ({n.Op}) at ({n.Token.StartLine} : {n.Token.StartColumn})");
var destReg = PopRegister();
var op1Reg = PopRegister();
var op2Reg = PopRegister();
_writer.WriteInstruction(Instructions.Lw, op1Reg, $"{operandVarOffsets[0]}({FSPReg})");
_writer.WriteInstruction(Instructions.Lw, op2Reg, $"{operandVarOffsets[1]}({FSPReg})");
_writer.WriteInstruction(instruction, destReg, op2Reg, op1Reg);
_writer.WriteInstruction(Instructions.Sw, $"{resultOffset}({FSPReg})", destReg);
PushRegister(op2Reg);
PushRegister(op1Reg);
PushRegister(destReg);
}