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      1 // Copyright 2008 the V8 project authors. All rights reserved.
      2 // Redistribution and use in source and binary forms, with or without
      3 // modification, are permitted provided that the following conditions are
      4 // met:
      5 //
      6 //     * Redistributions of source code must retain the above copyright
      7 //       notice, this list of conditions and the following disclaimer.
      8 //     * Redistributions in binary form must reproduce the above
      9 //       copyright notice, this list of conditions and the following
     10 //       disclaimer in the documentation and/or other materials provided
     11 //       with the distribution.
     12 //     * Neither the name of Google Inc. nor the names of its
     13 //       contributors may be used to endorse or promote products derived
     14 //       from this software without specific prior written permission.
     15 //
     16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27 
     28 function argc0() {
     29   return arguments.length;
     30 }
     31 
     32 function argc1(i) {
     33   return arguments.length;
     34 }
     35 
     36 function argc2(i, j) {
     37   return arguments.length;
     38 }
     39 
     40 assertEquals(0, argc0());
     41 assertEquals(1, argc0(1));
     42 assertEquals(2, argc0(1, 2));
     43 assertEquals(3, argc0(1, 2, 3));
     44 assertEquals(0, argc1());
     45 assertEquals(1, argc1(1));
     46 assertEquals(2, argc1(1, 2));
     47 assertEquals(3, argc1(1, 2, 3));
     48 assertEquals(0, argc2());
     49 assertEquals(1, argc2(1));
     50 assertEquals(2, argc2(1, 2));
     51 assertEquals(3, argc2(1, 2, 3));
     52 
     53 
     54 
     55 var index;
     56 
     57 function argv0() {
     58   return arguments[index];
     59 }
     60 
     61 function argv1(i) {
     62   return arguments[index];
     63 }
     64 
     65 function argv2(i, j) {
     66   return arguments[index];
     67 }
     68 
     69 index = 0;
     70 assertEquals(7, argv0(7));
     71 assertEquals(7, argv0(7, 8));
     72 assertEquals(7, argv0(7, 8, 9));
     73 assertEquals(7, argv1(7));
     74 assertEquals(7, argv1(7, 8));
     75 assertEquals(7, argv1(7, 8, 9));
     76 assertEquals(7, argv2(7));
     77 assertEquals(7, argv2(7, 8));
     78 assertEquals(7, argv2(7, 8, 9));
     79 
     80 index = 1;
     81 assertEquals(8, argv0(7, 8));
     82 assertEquals(8, argv0(7, 8));
     83 assertEquals(8, argv1(7, 8, 9));
     84 assertEquals(8, argv1(7, 8, 9));
     85 assertEquals(8, argv2(7, 8, 9));
     86 assertEquals(8, argv2(7, 8, 9));
     87 
     88 index = 2;
     89 assertEquals(9, argv0(7, 8, 9));
     90 assertEquals(9, argv1(7, 8, 9));
     91 assertEquals(9, argv2(7, 8, 9));
     92 
     93 
     94 // Test that calling a lazily compiled function with
     95 // an unexpected number of arguments works.
     96 function f(a) { return arguments.length; };
     97 assertEquals(3, f(1, 2, 3));
     98