func compileComparison(ctx *context, n *node.BinaryNode) {
compileBinaryOperands(ctx, n)
switch n.Type() {
case node.Equals:
ctx.AppendOp(vm.TXOPEquals)
case node.NotEquals:
ctx.AppendOp(vm.TXOPNotEquals)
case node.LT:
ctx.AppendOp(vm.TXOPLessThan)
case node.GT:
ctx.AppendOp(vm.TXOPGreaterThan)
default:
panic("Unknown operator")
}
}
func compileBinaryArithmetic(ctx *context, n *node.BinaryNode) {
var optype vm.OpType
switch n.Type() {
case node.Plus:
optype = vm.TXOPAdd
case node.Minus:
optype = vm.TXOPSub
case node.Mul:
optype = vm.TXOPMul
case node.Div:
optype = vm.TXOPDiv
default:
panic("Unknown arithmetic")
}
ctx.AppendOp(vm.TXOPNoop).SetComment("BEGIN " + optype.String())
compileBinaryOperands(ctx, n)
ctx.AppendOp(optype).SetComment("Execute " + optype.String() + " on registers sa and sb")
}