| 34 | } |
| 35 | |
| 36 | func (p *Parser) scan() (query string, tokens []jsonpathSymType, done bool) { |
| 37 | var lval jsonpathSymType |
| 38 | |
| 39 | p.scanner.Scan(&lval) |
| 40 | if lval.id == 0 { |
| 41 | return "", nil, true |
| 42 | } |
| 43 | |
| 44 | startPos := lval.pos |
| 45 | |
| 46 | lval.pos = 0 |
| 47 | tokens = append(tokens, lval) |
| 48 | var posBeforeScan int |
| 49 | for { |
| 50 | if lval.id == ERROR { |
| 51 | return p.scanner.In()[startPos:], tokens, true |
| 52 | } |
| 53 | lval = jsonpathSymType{} |
| 54 | posBeforeScan = p.scanner.Pos() |
| 55 | p.scanner.Scan(&lval) |
| 56 | if lval.id == 0 { |
| 57 | return p.scanner.In()[startPos:posBeforeScan], tokens, (lval.id == 0) |
| 58 | } |
| 59 | lval.pos -= startPos |
| 60 | tokens = append(tokens, lval) |
| 61 | } |
| 62 | } |
| 63 | |
| 64 | // parse parses a statement from the given scanned tokens. |
| 65 | func (p *Parser) parse( |