Method parseMapper

parse.go:154–184

(c context.Context)

}

func (p *parser) parseMapper(c context.Context) error {
	scan := p.Scan()
	switch scan {
	case scanner.Ident:
		p.appendPlainSelector(directSelector(p.Const(p.TokenText())))
	case '[':
		keys, seperator, err := p.parseBracket(c)

		if err != nil {
			return err
		}
		switch seperator {
		case ':':
			return fmt.Errorf("mapper can not be combined with range query")
		case '?':
			if len(keys) != 1 {
				return fmt.Errorf("filter needs exactly one key")
			}
			p.appendAmbiguousSelector(filterSelector(keys[0]))
		default:
			p.appendAmbiguousSelector(multiSelector(keys))
		}
	case '*':
		p.appendAmbiguousSelector(starSelector())
	case '(':
		return p.parseScript(c)
	default:
		return p.Expected("JSON mapper", '[', scanner.Ident, '*')
	}
	return p.parsePath(c)
}

func (p *parser) parseScript(c context.Context) error {
	script, err := p.ParseExpression(c)