package expr import ( "errors" "llvm.org/llvm/bindings/go/llvm" ) type addActual []Expr func (aa addActual) LLVMVal(builder llvm.Builder) llvm.Value { a := builder.CreateLoad(aa[0].LLVMVal(builder), "") for i := range aa[1:] { b := builder.CreateLoad(aa[i+1].LLVMVal(builder), "") a = builder.CreateAdd(a, b, "") } return a } var macros = map[Macro]func(Expr) (Expr, error){ "add": func(e Expr) (Expr, error) { tup, ok := e.Actual.(Tuple) if !ok { // TODO proper error return Expr{}, errors.New("add only accepts a tuple") } return Expr{ Actual: addActual(tup), Token: e.Token, }, nil }, }