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Added BlockClosure>>ensure:

Nicolas Petton 14 years ago
parent
commit
90110b9a8d
1 changed files with 13 additions and 0 deletions
  1. 13 0
      js/Kernel.js

+ 13 - 0
js/Kernel.js

@@ -1603,6 +1603,19 @@ fn: function (aNumber) {
 source: unescape('valueWithInterval%3A%20aNumber%0A%09%5E%7B%27return%20setInterval%28self%2C%20aNumber%29%27%7D')}),
 smalltalk.BlockClosure);
 
+smalltalk.addMethod(
+'_ensure_',
+smalltalk.method({
+selector: 'ensure:',
+category: 'evaluating',
+fn: function (aBlock) {
+    var self = this;
+    (function () {var success = true;try {self();} catch (e) {success = false;aBlock();throw e;}if (success) {aBlock();}}());
+    return self;
+},
+source: unescape('ensure%3A%20aBlock%0A%09%22Evaluate%20a%20termination%20block%20after%20evaluating%20the%20receiver%2C%20regardless%20of%0A%09%20whether%20the%20receiver%27s%20evaluation%20completes.%22%0A%09%7B%27%0A%09%09var%20success%20%3D%20true%3B%0A%09%09try%7Bself%28%29%7D%20catch%28e%29%20%7B%0A%09%09%09success%20%3D%20false%3B%0A%09%09%09aBlock%28%29%3B%0A%09%09%09throw%28e%29%7D%0A%09%09if%28success%29%7BaBlock%28%29%7D%0A%09%27%7D')}),
+smalltalk.BlockClosure);
+
 
 
 smalltalk.addClass('Boolean', smalltalk.Object, [], 'Kernel');