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      1 // Copyright 2010 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 // Flags: --always-full-compiler
     29 
     30 var functionToCatch;
     31 var lineNumber;
     32 
     33 function catchLineNumber () {
     34   var x = {};
     35 
     36   Error.prepareStackTrace = function (error, stackTrace) {
     37     stackTrace.some(function (frame) {
     38       if (frame.getFunction() == functionToCatch) {
     39         lineNumber = frame.getLineNumber();
     40         return true;
     41       }
     42       return false;
     43     });
     44     return lineNumber;
     45   };
     46 
     47   Error.captureStackTrace(x);
     48   return x.stack;
     49 }
     50 
     51 function log() {
     52   catchLineNumber();
     53 }
     54 
     55 function foo() {}
     56 
     57 function test1() {
     58   log(foo() == foo()
     59       ? 'a'
     60       : 'b');
     61 }
     62 
     63 function test2() {
     64   var o = { foo: function () {}}
     65   log(o.foo() == o.foo()
     66       ? 'a'
     67       : 'b');
     68 }
     69 
     70 function test3() {
     71   var o = { log: log, foo: function() { } };
     72   o.log(o.foo() == o.foo()
     73       ? 'a'
     74       : 'b');
     75 
     76 }
     77 
     78 function test(f, expectedLineNumber) {
     79   functionToCatch = f;
     80   f();
     81 
     82   assertEquals(expectedLineNumber, lineNumber);
     83 }
     84 
     85 test(test1, 58);
     86 test(test2, 65);
     87 test(test3, 72);
     88 
     89 eval(test1.toString() + "//@ sourceUrl=foo");
     90 eval(test2.toString() + "//@ sourceUrl=foo");
     91 eval(test3.toString() + "//@ sourceUrl=foo");
     92 
     93 test(test1, 2);
     94 test(test2, 3);
     95 test(test3, 3);
     96