Adding ElementsAccessor::Splice

test/mjsunit/array-splice.js

 // Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 98 matching lines @@
 // Check variants of negatives and positive indices.
 (function() {
   var array, spliced;
   for (var i = 0; i < 7; i++) {
     array = [1, 2, 3, 4, 5, 6, 7];
     spliced = array.splice(-100);
     assertEquals([], array);
     assertEquals([1, 2, 3, 4, 5, 6, 7], spliced);
 
     array = [1, 2, 3, 4, 5, 6, 7];
+    spliced = array.splice(-1e100);
+    assertEquals([], array);
+    assertEquals([1, 2, 3, 4, 5, 6, 7], spliced);
+
+    array = [1, 2, 3, 4, 5, 6, 7];
     spliced = array.splice(-3);
     assertEquals([1, 2, 3, 4], array);
     assertEquals([5, 6, 7], spliced);
 
     array = [1, 2, 3, 4, 5, 6, 7];
+    spliced = array.splice(-3.999999);
+    assertEquals([1, 2, 3, 4], array);
+    assertEquals([5, 6, 7], spliced);
+
+    array = [1, 2, 3, 4, 5, 6, 7];
+    spliced = array.splice(-3.000001);
+    assertEquals([1, 2, 3, 4], array);
+    assertEquals([5, 6, 7], spliced);
+
+    array = [1, 2, 3, 4, 5, 6, 7];
     spliced = array.splice(4);
     assertEquals([1, 2, 3, 4], array);
     assertEquals([5, 6, 7], spliced);
 
     array = [1, 2, 3, 4, 5, 6, 7];
+    spliced = array.splice(4.999999);
+    assertEquals([1, 2, 3, 4], array);
+    assertEquals([5, 6, 7], spliced);
+
+    array = [1, 2, 3, 4, 5, 6, 7];
+    spliced = array.splice(4.000001);
+    assertEquals([1, 2, 3, 4], array);
+    assertEquals([5, 6, 7], spliced);
+
+    array = [1, 2, 3, 4, 5, 6, 7];
     spliced = array.splice(6);
     assertEquals([1, 2, 3, 4, 5, 6], array);
     assertEquals([7], spliced);
 
     array = [1, 2, 3, 4, 5, 6, 7];
     spliced = array.splice(7);
     assertEquals([1, 2, 3, 4, 5, 6, 7], array);
     assertEquals([], spliced);
 
     array = [1, 2, 3, 4, 5, 6, 7];
     spliced = array.splice(8);
     assertEquals([1, 2, 3, 4, 5, 6, 7], array);
     assertEquals([], spliced);
 
     array = [1, 2, 3, 4, 5, 6, 7];
     spliced = array.splice(100);
     assertEquals([1, 2, 3, 4, 5, 6, 7], array);
     assertEquals([], spliced);
 
     array = [1, 2, 3, 4, 5, 6, 7];
+    spliced = array.splice(1e100);
+    assertEquals([1, 2, 3, 4, 5, 6, 7], array);
+    assertEquals([], spliced);
+
+    array = [1, 2, 3, 4, 5, 6, 7];
     spliced = array.splice(0, -100);
     assertEquals([1, 2, 3, 4, 5, 6, 7], array);
     assertEquals([], spliced);
 
     array = [1, 2, 3, 4, 5, 6, 7];
+    spliced = array.splice(0, -1e100);
+    assertEquals([1, 2, 3, 4, 5, 6, 7], array);
+    assertEquals([], spliced);
+
+    array = [1, 2, 3, 4, 5, 6, 7];
     spliced = array.splice(0, -3);
     assertEquals([1, 2, 3, 4, 5, 6, 7], array);
     assertEquals([], spliced);
 
     array = [1, 2, 3, 4, 5, 6, 7];
+    spliced = array.splice(0, -3.999999);
+    assertEquals([1, 2, 3, 4, 5, 6, 7], array);
+    assertEquals([], spliced);
+
+    array = [1, 2, 3, 4, 5, 6, 7];
+    spliced = array.splice(0, -3.000001);
+    assertEquals([1, 2, 3, 4, 5, 6, 7], array);
+    assertEquals([], spliced);
+
+    array = [1, 2, 3, 4, 5, 6, 7];
     spliced = array.splice(0, 4);
     assertEquals([5, 6, 7], array);
     assertEquals([1, 2, 3, 4], spliced);
 
     array = [1, 2, 3, 4, 5, 6, 7];
+    spliced = array.splice(0, 4.999999);
+    assertEquals([5, 6, 7], array);
+    assertEquals([1, 2, 3, 4], spliced);
+
+    array = [1, 2, 3, 4, 5, 6, 7];
+    spliced = array.splice(0, 4.000001);
+    assertEquals([5, 6, 7], array);
+    assertEquals([1, 2, 3, 4], spliced);
+
+    array = [1, 2, 3, 4, 5, 6, 7];
     spliced = array.splice(0, 6);
     assertEquals([7], array);
     assertEquals([1, 2, 3, 4, 5, 6], spliced);
 
     array = [1, 2, 3, 4, 5, 6, 7];
     spliced = array.splice(0, 7);
     assertEquals([], array);
     assertEquals([1, 2, 3, 4, 5, 6, 7], spliced);
 
     array = [1, 2, 3, 4, 5, 6, 7];
     spliced = array.splice(0, 8);
     assertEquals([], array);
     assertEquals([1, 2, 3, 4, 5, 6, 7], spliced);
 
     array = [1, 2, 3, 4, 5, 6, 7];
     spliced = array.splice(0, 100);
     assertEquals([], array);
     assertEquals([1, 2, 3, 4, 5, 6, 7], spliced);
 
+    array = [1, 2, 3, 4, 5, 6, 7];
+    spliced = array.splice(0, 1e100);
+    assertEquals([], array);
+    assertEquals([1, 2, 3, 4, 5, 6, 7], spliced);
+
     // Some exotic cases.
     obj = { toString: function() { throw 'Exception'; } };
 
     // Throwing an exception in conversion:
     try {
       [1, 2, 3].splice(obj, 3);
       throw 'Should have thrown';
     } catch (e) {
       assertEquals('Exception', e);
     }
@@ skipping 180 matching lines @@
 
 (function() {
   for (var i = 0; i < 7; i++) {
     var a = [7, 8, 9];
     a.splice(0, 0, 1, 2, 3, 4, 5, 6);
     assertEquals([1, 2, 3, 4, 5, 6, 7, 8, 9], a);
     assertFalse(a.hasOwnProperty(10), "a.hasOwnProperty(10)");
     assertEquals(undefined, a[10]);
   }
 })();