coffee.js 4.3 KB

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  1. /* ***** BEGIN LICENSE BLOCK *****
  2. * Distributed under the BSD license:
  3. *
  4. * Copyright (c) 2010, Ajax.org B.V.
  5. * All rights reserved.
  6. *
  7. * Redistribution and use in source and binary forms, with or without
  8. * modification, are permitted provided that the following conditions are met:
  9. * * Redistributions of source code must retain the above copyright
  10. * notice, this list of conditions and the following disclaimer.
  11. * * Redistributions in binary form must reproduce the above copyright
  12. * notice, this list of conditions and the following disclaimer in the
  13. * documentation and/or other materials provided with the distribution.
  14. * * Neither the name of Ajax.org B.V. nor the
  15. * names of its contributors may be used to endorse or promote products
  16. * derived from this software without specific prior written permission.
  17. *
  18. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  19. * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  20. * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  21. * DISCLAIMED. IN NO EVENT SHALL AJAX.ORG B.V. BE LIABLE FOR ANY
  22. * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  23. * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  24. * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  25. * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26. * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  27. * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28. *
  29. * ***** END LICENSE BLOCK ***** */
  30. define(function(require, exports, module) {
  31. "use strict";
  32. var oop = require("../../lib/oop");
  33. var BaseFoldMode = require("./fold_mode").FoldMode;
  34. var Range = require("../../range").Range;
  35. var FoldMode = exports.FoldMode = function() {};
  36. oop.inherits(FoldMode, BaseFoldMode);
  37. (function() {
  38. this.getFoldWidgetRange = function(session, foldStyle, row) {
  39. var range = this.indentationBlock(session, row);
  40. if (range)
  41. return range;
  42. var re = /\S/;
  43. var line = session.getLine(row);
  44. var startLevel = line.search(re);
  45. if (startLevel == -1 || line[startLevel] != "#")
  46. return;
  47. var startColumn = line.length;
  48. var maxRow = session.getLength();
  49. var startRow = row;
  50. var endRow = row;
  51. while (++row < maxRow) {
  52. line = session.getLine(row);
  53. var level = line.search(re);
  54. if (level == -1)
  55. continue;
  56. if (line[level] != "#")
  57. break;
  58. endRow = row;
  59. }
  60. if (endRow > startRow) {
  61. var endColumn = session.getLine(endRow).length;
  62. return new Range(startRow, startColumn, endRow, endColumn);
  63. }
  64. };
  65. // must return "" if there's no fold, to enable caching
  66. this.getFoldWidget = function(session, foldStyle, row) {
  67. var line = session.getLine(row);
  68. var indent = line.search(/\S/);
  69. var next = session.getLine(row + 1);
  70. var prev = session.getLine(row - 1);
  71. var prevIndent = prev.search(/\S/);
  72. var nextIndent = next.search(/\S/);
  73. if (indent == -1) {
  74. session.foldWidgets[row - 1] = prevIndent!= -1 && prevIndent < nextIndent ? "start" : "";
  75. return "";
  76. }
  77. // documentation comments
  78. if (prevIndent == -1) {
  79. if (indent == nextIndent && line[indent] == "#" && next[indent] == "#") {
  80. session.foldWidgets[row - 1] = "";
  81. session.foldWidgets[row + 1] = "";
  82. return "start";
  83. }
  84. } else if (prevIndent == indent && line[indent] == "#" && prev[indent] == "#") {
  85. if (session.getLine(row - 2).search(/\S/) == -1) {
  86. session.foldWidgets[row - 1] = "start";
  87. session.foldWidgets[row + 1] = "";
  88. return "";
  89. }
  90. }
  91. if (prevIndent!= -1 && prevIndent < indent)
  92. session.foldWidgets[row - 1] = "start";
  93. else
  94. session.foldWidgets[row - 1] = "";
  95. if (indent < nextIndent)
  96. return "start";
  97. else
  98. return "";
  99. };
  100. }).call(FoldMode.prototype);
  101. });