apply.js.svn-base

Google浏览器V8内核代码

// 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 f0() {
  return this;
}

function f1(a) {
  return a;
}

assertTrue(this === f0.apply(), "1-0");

assertTrue(this === f0.apply(this), "2a");
assertTrue(this === f0.apply(this, new Array(1)), "2b");
assertTrue(this === f0.apply(this, new Array(2)), "2c");
assertTrue(this === f0.apply(this, new Array(4242)), "2c");

assertTrue(this === f0.apply(null), "3a");
assertTrue(this === f0.apply(null, new Array(1)), "3b");
assertTrue(this === f0.apply(null, new Array(2)), "3c");
assertTrue(this === f0.apply(this, new Array(4242)), "2c");

assertTrue(this === f0.apply(void 0), "4a");
assertTrue(this === f0.apply(void 0, new Array(1)), "4b");
assertTrue(this === f0.apply(void 0, new Array(2)), "4c");

assertTrue(void 0 === f1.apply(), "1-1");

assertTrue(void 0 === f1.apply(this), "2a");
assertTrue(void 0 === f1.apply(this, new Array(1)), "2b");
assertTrue(void 0 === f1.apply(this, new Array(2)), "2c");
assertTrue(void 0 === f1.apply(this, new Array(4242)), "2c");
assertTrue(42 === f1.apply(this, new Array(42, 43)), "2c");
assertEquals("foo", f1.apply(this, new Array("foo", "bar", "baz", "boo")), "2c");

assertTrue(void 0 === f1.apply(null), "3a");
assertTrue(void 0 === f1.apply(null, new Array(1)), "3b");
assertTrue(void 0 === f1.apply(null, new Array(2)), "3c");
assertTrue(void 0 === f1.apply(null, new Array(4242)), "2c");
assertTrue(42 === f1.apply(null, new Array(42, 43)), "2c");
assertEquals("foo", f1.apply(null, new Array("foo", "bar", "baz", "boo")), "2c");

assertTrue(void 0 === f1.apply(void 0), "4a");
assertTrue(void 0 === f1.apply(void 0, new Array(1)), "4b");
assertTrue(void 0 === f1.apply(void 0, new Array(2)), "4c");
assertTrue(void 0 === f1.apply(void 0, new Array(4242)), "4c");
assertTrue(42 === f1.apply(void 0, new Array(42, 43)), "2c");
assertEquals("foo", f1.apply(void 0, new Array("foo", "bar", "baz", "boo")), "2c");

var arr = new Array(42, "foo", "fish", "horse");
function j(a, b, c, d, e, f, g, h, i, j, k, l) {
  return "" + a + b + c + d + e + f + g + h + i + j + k + l;
}


var expect = "42foofishhorse";
for (var i = 0; i < 8; i++)
  expect += "undefined";
assertEquals(expect, j.apply(undefined, arr));

assertThrows("f0.apply(this, 1);");
assertThrows("f0.apply(this, 1, 2);");
assertThrows("f0.apply(this, 1, new Array(2));");

function f() {
  var doo = "";
  for (var i = 0; i < arguments.length; i++) {
    doo += arguments[i];
  }
  return doo;
}
  
assertEquals("42foofishhorse", f.apply(this, arr));

function s() {
  var doo = this;
  for (var i = 0; i < arguments.length; i++) {
    doo += arguments[i];
  }
  return doo;
}

assertEquals("bar42foofishhorse", s.apply("bar", arr));

function al() {
  assertEquals(345, this);
  return arguments.length + arguments[arguments.length - 1];
}

for (var j = 1; j < 0x40000000; j <<= 1) {
  try {
    var a = new Array(j);
    a[j - 1] = 42;
    assertEquals(42 + j, al.apply(345, a));
  } catch (e) {
    assertTrue(e.toString().indexOf("Function.prototype.apply") != -1);
    for (; j < 0x40000000; j <<= 1) {
      var caught = false;
      try {
        a = new Array(j);
        a[j - 1] = 42;
        al.apply(345, a);
        assertEquals("Shouldn't get", "here");
      } catch (e) {
        assertTrue(e.toString().indexOf("Function.prototype.apply") != -1);
        caught = true;
      }
      assertTrue(caught);
    }
    break;
  }
}

var primes = new Array(0);

function isPrime(possible_prime) {
  for (var d = 0; d < primes.length; d++) {
    var p = primes[d];
    if (possible_prime % p == 0)
      return false;
    if (p * p > possible_prime)
      return true;
  }
  return true;
}

for (var i = 2; i < 10000; i++) {
  if (isPrime(i)) {
    primes.push(i);
  }
}

assertEquals(1229, primes.length);

var same_primes = Array.prototype.constructor.apply(Array, primes);

for (var i = 0; i < primes.length; i++)
  assertEquals(primes[i], same_primes[i]);
assertEquals(primes.length, same_primes.length);


Array.prototype["1"] = "sep";

var holey = new Array(3);
holey[0] = "mor";
holey[2] = "er";

assertEquals("morseper", String.prototype.concat.apply("", holey));
assertEquals("morseper", String.prototype.concat.apply("", holey, 1));
assertEquals("morseper", String.prototype.concat.apply("", holey, 1, 2));
assertEquals("morseper", String.prototype.concat.apply("", holey, 1, 2, 3));
assertEquals("morseper", String.prototype.concat.apply("", holey, 1, 2, 3, 4));

primes[0] = "";
primes[1] = holey;
assertThrows("String.prototype.concat.apply.apply('foo', primes)");
assertEquals("morseper", String.prototype.concat.apply.apply(String.prototype.concat, primes));

delete(Array.prototype["1"]);