Analyze functions for assignment to this properties

test/mjsunit/simple-constructor.js

+// Copyright 2008 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
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+function props(x) {
+  var array = [];
+  for (var p in x) array.push(p);
+  return array.sort();
+}
+
+function f1() {
+  this.x = 1;
+}
+
+function f2(x) {
+  this.x = x;
+}
+
+function f3(x) {
+  this.x = x;
+  this.y = 1;
+  this.z = f1;
+}
+
+function f4(x) {
+  this.x = x;
+  this.y = 1;
+  if (x == 1) return;
+  this.z = f1;
+}
+
+o1_1 = new f1();
+o1_2 = new f1();
+assertArrayEquals(["x"], props(o1_1));
+assertArrayEquals(["x"], props(o1_2));
+
+o2_1 = new f2(0);
+o2_2 = new f2(0);
+assertArrayEquals(["x"], props(o2_1));
+assertArrayEquals(["x"], props(o2_2));
+
+o3_1 = new f3(0);
+o3_2 = new f3(0);
+assertArrayEquals(["x", "y", "z"], props(o3_1));
+assertArrayEquals(["x", "y", "z"], props(o3_2));
+
+o4_0_1 = new f4(0);
+o4_0_2 = new f4(0);
+assertArrayEquals(["x", "y", "z"], props(o4_0_1));
+assertArrayEquals(["x", "y", "z"], props(o4_0_2));
+
+o4_1_1 = new f4(1);
+o4_1_2 = new f4(1);
+assertArrayEquals(["x", "y"], props(o4_1_1));
+assertArrayEquals(["x", "y"], props(o4_1_2));