Method setAt

pointer.go:290–308

setAt recursively walks the token list, setting the data at the terminal token and rebinding any new child reference (e.g. a slice header returned by an "-" append) into its parent on the way back up. Returning the (possibly new) node at each level is what makes append work at any depth without req

(node any, tokens []string, data any, nameProvider NameProvider)

// requiring the caller to pass a pointer to the containing slice: the new slice header propagates
// up and each parent rebinds it via the appropriate kind-specific setter.
func (p *Pointer) setAt(node any, tokens []string, data any, nameProvider NameProvider) (any, error) {
	decodedToken := Unescape(tokens[0])

	if len(tokens) == 1 {
		return setSingleImpl(node, data, decodedToken, nameProvider)
	}

	child, err := p.resolveNodeForToken(node, decodedToken, nameProvider)
	if err != nil {
		return node, err
	}

	newChild, err := p.setAt(child, tokens[1:], data, nameProvider)
	if err != nil {
		return node, err
	}

	return rebindChild(node, decodedToken, newChild, nameProvider)
}

// rebindChild writes newChild back into node at decodedToken.
//