func (gb *GolangBackend) compileLambdaApplication(nl *gol.NodeLambda, vals *gol.NodeList) (string, error) {
bindings := make(map[string]gol.Node)
args := nl.Args
if args.Len() != vals.Len() {
return "", fmt.Errorf("Wrong number of args for lambda. [%s] != [%s]",
args.String(), vals.String())
}
for vals.Len() > 0 {
id := args.First().String()
bindings[id] = vals.First()
vals = vals.Rest()
args = args.Rest()
}
letForLambda := &gol.NodeLet{
// NodeList: nl.NodeList,
Bindings: bindings,
Body: nl.Body,
}
lambdaVarType, ok := nl.Type().(*typ.Var)
if !ok {
// Not an error if it's a functype, but we assign vars to all nodes....
return "", fmt.Errorf("Odd - not a var, instead a %T: %s\n", nl.Type(), nl.Type())
}
lambdaType, err := lambdaVarType.Lookup()
if err != nil {
return "", fmt.Errorf("Can't look up lambda var: %s [%T]\n", lambdaVarType, lambdaVarType)
}
funcType, ok := lambdaType.(typ.Func)
if !ok {
return "", fmt.Errorf("Lambda doesn't have function type: %s [%T]\n", nl.Type(), nl.Type())
}
letForLambda.NodeList = gol.NewNodeListType(funcType.Result)
return gb.compileLet(letForLambda)
}
