Method matchField

sup/parser-values.go:326–368

()

}

func (p *Parser) matchField() (*ast.Field, error) {
	l := p.lexer
	name, ok, err := p.matchSymbol()
	if err != nil {
		return nil, err
	}
	if !ok {
		return nil, nil
	}
	var opt bool
	opt, err = l.match('?')
	if err != nil {
		return nil, err
	}
	ok, err = l.match(':')
	if err != nil {
		return nil, err
	}
	if !ok {
		return nil, p.errorf("no type name found for field %q", name)
	}
	var val ast.Value
	none, err := p.matchNone()
	if err != nil {
		return nil, err
	}
	if none != nil {
		val = none
		if !opt {
			return nil, p.errorf("_ cannot appear in non-optional field %q", name)
		}
	} else {
		val, err = p.ParseValue()
		if err != nil {
			return nil, err
		}
	}
	return &ast.Field{
		Name:  name,
		Value: val,
		Opt:   opt,
	}, nil
}

func (p *Parser) matchSymbol() (string, bool, error) {
	s, ok, err := p.matchString()