Method MapValues

ast/ast.go:522–536

MapValues provides the entries of the map via key-value callback.

(cbCons func(Constant, Constant) error, cbNil func() error)

// MapValues provides the entries of the map via key-value callback.
func (c Constant) MapValues(cbCons func(Constant, Constant) error, cbNil func() error) (error, error) {
	if c.Type != MapShape {
		return fmt.Errorf("not a map constant %v", c), nil
	}
	for ; !c.IsMapNil(); c = *c.snd {
		p := c.fst
		if p.Type != PairShape {
			return fmt.Errorf("not a struct field %v", p), nil
		}
		if err := cbCons(*p.fst, *p.snd); err != nil {
			return nil, err
		}
	}
	return nil, cbNil()
}

// StructValues provides the entries that make up the struct via label-value callback.
func (c Constant) StructValues(cbCons func(Constant, Constant) error, cbNil func() error) (error, error) {