Method eval

runtime/vam/expr/mapcall.go:22–60

(vecs ...vector.Any)

}

func (m *mapCall) eval(vecs ...vector.Any) vector.Any {
	if vec, ok := CheckForNullThenError(vecs); ok {
		return vec
	}
	vec := vector.Under(vecs[0])
	var index []uint32
	if view, ok := vec.(*vector.View); ok {
		index = view.Index
		vec = view.Any
	}
	inner, offsets, ok := elements(vec)
	if !ok {
		return vector.NewWrappedError(m.sctx, "map: expected array or set value", vecs[0])
	}
	inner = m.lambda.Eval(inner)
	if d, ok := inner.(*vector.Dynamic); ok {
		var typs []super.Type
		for _, vec := range d.Values {
			typs = append(typs, vec.Type())
		}
		utyp := m.sctx.LookupTypeUnion(super.UniqueTypes(typs))
		inner = vector.NewUnion(utyp, d.Tags, d.Values)
	}
	var out vector.Any
	switch vec := vec.(type) {
	case *vector.Array:
		typ := m.sctx.LookupTypeArray(inner.Type())
		out = vector.NewArray(typ, offsets, inner)
	case *vector.Set:
		typ := m.sctx.LookupTypeSet(inner.Type())
		out = vector.NewSet(typ, offsets, inner)
	default:
		panic(vec)
	}
	if index != nil {
		out = vector.Pick(out, index)
	}
	return out
}

func elements(vec vector.Any) (vector.Any, []uint32, bool) {
	switch vec := vec.(type) {