Method Call

runtime/vam/expr/function/string.go:16–44

(args ...vector.Any)

}

func (c *Concat) Call(args ...vector.Any) vector.Any {
	n := args[0].Len()
	vecs := args[:0]
	for _, vec := range args {
		switch vec.Kind() {
		case vector.KindString:
			vecs = append(vecs, vec)
		case vector.KindNull:
			// Ignored.
		case vector.KindError:
			return vec
		default:
			return vector.NewWrappedError(c.sctx, "concat: string arg required", vec)
		}
	}
	if len(vecs) == 0 {
		return vector.NewConstString("", n)
	}
	out := vector.NewStringEmpty(0)
	for i := range n {
		var b strings.Builder
		for _, vec := range vecs {
			s := vector.StringValue(vec, i)
			b.WriteString(s)
		}
		out.Append(b.String())
	}
	return out
}

type Join struct {
	sctx *super.Context