| 1 | |
| 2 | /** |
| 3 | @constructor |
| 4 | */ |
| 5 | JSDOC.TextStream = function(text) { |
| 6 | if (typeof(text) == "undefined") text = ""; |
| 7 | text = ""+text; |
| 8 | this.text = text; |
| 9 | this.cursor = 0; |
| 10 | } |
| 11 | |
| 12 | JSDOC.TextStream.prototype.look = function(n) { |
| 13 | if (typeof n == "undefined") n = 0; |
| 14 | |
| 15 | if (this.cursor+n < 0 || this.cursor+n >= this.text.length) { |
| 16 | var result = new String(""); |
| 17 | result.eof = true; |
| 18 | return result; |
| 19 | } |
| 20 | return this.text.charAt(this.cursor+n); |
| 21 | } |
| 22 | |
| 23 | JSDOC.TextStream.prototype.next = function(n) { |
| 24 | if (typeof n == "undefined") n = 1; |
| 25 | if (n < 1) return null; |
| 26 | |
| 27 | var pulled = ""; |
| 28 | for (var i = 0; i < n; i++) { |
| 29 | if (this.cursor+i < this.text.length) { |
| 30 | pulled += this.text.charAt(this.cursor+i); |
| 31 | } |
| 32 | else { |
| 33 | var result = new String(""); |
| 34 | result.eof = true; |
| 35 | return result; |
| 36 | } |
| 37 | } |
| 38 | |
| 39 | this.cursor += n; |
| 40 | return pulled; |
| 41 | } |