abstract-object - npm Package Compare versions

Comparing version 1.3.5 to 1.3.6

lib/util.js

@@ -234,3 +234,78 @@ /** `Object#toString` result shortcuts */
       return result;
+    },
+    /*
+    @desc  inject the function
+    @param aOrgFunc     the original function to be injected.
+    @param aBeforeExec  this is called before the execution of the aOrgFunc.
+                        you must return the arguments(new Arguments(arguments))
+                        if you wanna modify the arguments value of the aOrgFunc.
+                        it will stop the execution of the aOrgFunc if you return
+                        a value not an Arguments object nor a undefined value
+    @param aAtferExec   this is called after the execution of the aOrgFunc.
+                        you must add a result argument at the last argument of the
+                        aAtferExec function if you wanna get the result value of the aOrgFunc.
+                        you must add a isDenied argument following the result argument if you
+                        wanna know whether the aOrgFunc is executed.
+                        you must return the result if you wanna modify the result value of the aOrgFunc .
+
+    @Usage  Obj.prototype.Method = inject(Obj.prototype.Method, aFunctionBeforeExec[, aFunctionAtferExec]);
+    @version 1.1
+    @author  Aimingoo&Riceball
+    @history
+      V1.0 -- first released.
+      V1.1 --
+        Supports to denie the aOrgFunc execution in aBeforeExec.
+        Supports around in the aAtferExec, the aAtferExec be always executed even though
+        denie the aOrgFunc execution in aBeforeExec.
+          + isDenied argument to the aAtferExec function. notice the aAtferExec whether
+            the aOrgFunc is executed
+
+    eg:
+    var doTest = function (a) {return a};
+    function beforeTest(a) {
+      alert('before exec: a='+a);
+      a += 3;
+      return arguments;
+    };
+    function afterTest(a, result, isDenied) {
+      alert('after exec: a='+a+';result='+result+';isDenied='+isDenied);
+      return result+5;
+    };
+
+    doTest = inject(doTest, beforeTest, afterTest);
+
+    alert (doTest(2));
+    the result should be 10.
+
+  */
+  inject: function ( aOrgFunc, aBeforeExec, aAtferExec ) {
+    var arraySlice = Array.prototype.slice;
+    return function() {
+      var Result, isDenied=false, args=arraySlice.call(arguments);
+      if (typeof(aBeforeExec) === 'function') {
+        //the result
+        //  * a return value instead of original function.
+        //  * an arguments pass to original function.
+        //  * whether deny the original function.
+        //    * return the arguments to allow execution
+        //    * return undefined to allow execution
+        Result = aBeforeExec.apply(this, args);
+        if (util.isArguments(Result)) {
+          args = arraySlice.call(Result)
+        }
+        else if (isDenied = Result !== undefined)
+          args.push(Result)
+      }
+
+      !isDenied && args.push(aOrgFunc.apply(this, args)); //if (!isDenied) args.push(aOrgFunc.apply(this, args));
+
+      if (typeof(aAtferExec) === 'function') {
+        Result = aAtferExec.apply(this, args.concat(isDenied));
+      }
+      else
+        Result = undefined;
+
+      return (Result !== undefined ? Result : args.pop());
     }
+  }
 }

package.json

 {
   "name": "abstract-object",
-  "version": "1.3.5",
+  "version": "1.3.6",
   "description": "AbstractObject with Object State Events Support, RefObject with RefCount and AddRef/Release Support.",
@@ -5,0 +5,0 @@ "homepage": "https://github.com/snowyu/abstract-object",

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Total package byte prevSize

55808

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Lines of code

519

increased by14.82%

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1

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Number of lines in readme file

196

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