Method Call

runtime/sam/expr/function/string.go:166–195

(args []super.Value)

}

func (j *Join) Call(args []super.Value) super.Value {
	args = underAll(args)
	for _, val := range args {
		if val.IsNull() {
			return super.Null
		}
	}
	splitsVal := args[0]
	typ, ok := super.TypeUnder(splitsVal.Type()).(*super.TypeArray)
	if !ok || typ.Type.ID() != super.IDString {
		return j.sctx.WrapError("join: array of string arg required", splitsVal)
	}
	var separator string
	if len(args) == 2 {
		sepVal := args[1]
		if !sepVal.IsString() {
			return j.sctx.WrapError("join: separator must be string", sepVal)
		}
		separator = super.DecodeString(sepVal.Bytes())
	}
	var b strings.Builder
	var sep string
	it := splitsVal.Bytes().Iter()
	for !it.Done() {
		b.WriteString(sep)
		b.WriteString(super.DecodeString(it.Next()))
		sep = separator
	}
	return super.NewString(b.String())
}

type Levenshtein struct {
	sctx *super.Context