public override void Visit(RppRelationalBinOp node)
{
node.Left.Accept(this);
node.Right.Accept(this);
}
public override void Visit(RppRelationalBinOp node)
{
node.Left.Accept(this);
node.Right.Accept(this);
bool shouldJump = _targetLabel.HasValue;
if (shouldJump)
{
OpCode cmpAndJumpOpCode;
switch (node.Op)
{
case "<":
cmpAndJumpOpCode = _onTrue ? OpCodes.Blt : OpCodes.Bge;
break;
case ">":
cmpAndJumpOpCode = _onTrue ? OpCodes.Bgt : OpCodes.Ble;
break;
case "==":
cmpAndJumpOpCode = _onTrue ? OpCodes.Beq : OpCodes.Bne_Un;
break;
case "!=":
cmpAndJumpOpCode = _onTrue ? OpCodes.Bne_Un : OpCodes.Beq;
break;
case ">=":
cmpAndJumpOpCode = _onTrue ? OpCodes.Bge : OpCodes.Blt;
break;
case "<=":
cmpAndJumpOpCode = _onTrue ? OpCodes.Ble : OpCodes.Bgt;
break;
default:
throw new Exception("Don't know how to handle " + node.Op);
}
_body.Emit(cmpAndJumpOpCode, _targetLabel.Value);
Jumped = true;
}
else
{
switch (node.Op)
{
case "<":
_body.Emit(OpCodes.Clt);
break;
case ">":
_body.Emit(OpCodes.Cgt);
break;
case "==":
_body.Emit(OpCodes.Ceq);
break;
case "!=":
_body.Emit(OpCodes.Cgt_Un);
break;
case ">=":
_body.Emit(OpCodes.Clt);
_body.Emit(OpCodes.Ldc_I4_0);
_body.Emit(OpCodes.Ceq);
break;
case "<=":
_body.Emit(OpCodes.Cgt);
_body.Emit(OpCodes.Ldc_I4_0);
_body.Emit(OpCodes.Ceq);
break;
default:
throw new Exception("Unknown op " + node.Op);
}
}
}
public virtual void Visit(RppRelationalBinOp node)
{
}
