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      1 // Copyright 2009 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: --expose-debug-as debug
     29 // Get the Debug object exposed from the debug context global object.
     30 Debug = debug.Debug
     31 
     32 var exception = false;  // Exception in debug event listener.
     33 var before_compile_count = 0;
     34 var after_compile_count = 0;
     35 var current_source = '';  // Current source being compiled.
     36 var source_count = 0;  // Total number of scources compiled.
     37 var host_compilations = 0;  // Number of scources compiled through the API.
     38 var eval_compilations = 0;  // Number of scources compiled through eval.
     39 
     40 
     41 function compileSource(source) {
     42   current_source = source;
     43   eval(current_source);
     44   source_count++;
     45 }
     46 
     47 
     48 function listener(event, exec_state, event_data, data) {
     49   try {
     50     if (event == Debug.DebugEvent.BeforeCompile ||
     51         event == Debug.DebugEvent.AfterCompile) {
     52       // Count the events.
     53       if (event == Debug.DebugEvent.BeforeCompile) {
     54         before_compile_count++;
     55       } else {
     56         after_compile_count++;
     57         switch (event_data.script().compilationType()) {
     58           case Debug.ScriptCompilationType.Host:
     59             host_compilations++;
     60             break;
     61           case Debug.ScriptCompilationType.Eval:
     62             eval_compilations++;
     63             break;
     64         }
     65       }
     66 
     67       // If the compiled source contains 'eval' there will be additional compile
     68       // events for the source inside eval.
     69       if (current_source.indexOf('eval') == 0) {
     70         // For source with 'eval' there will be compile events with substrings
     71         // as well as with with the exact source.
     72         assertTrue(current_source.indexOf(event_data.script().source()) >= 0);
     73       } else {
     74         // For source without 'eval' there will be a compile events with the
     75         // exact source.
     76         assertEquals(current_source, event_data.script().source());
     77       }
     78       // Check that script context is included into the event message.
     79       var json = event_data.toJSONProtocol();
     80       var msg = eval('(' + json + ')');
     81       assertTrue('context' in msg.body.script);
     82 
     83       // Check that we pick script name from //# sourceURL, iff present
     84       assertEquals(current_source.indexOf('sourceURL') >= 0 ?
     85                      'myscript.js' : undefined,
     86                    event_data.script().name());
     87     }
     88   } catch (e) {
     89     exception = e
     90   }
     91 };
     92 
     93 
     94 // Add the debug event listener.
     95 Debug.setListener(listener);
     96 
     97 // Compile different sources.
     98 compileSource('a=1');
     99 compileSource('(function(){})');
    100 compileSource('eval("a=2")');
    101 source_count++;  // Using eval causes additional compilation event.
    102 compileSource('eval("eval(\'(function(){return a;})\')")');
    103 source_count += 2;  // Using eval causes additional compilation event.
    104 compileSource('JSON.parse(\'{"a":1,"b":2}\')');
    105 // Using JSON.parse does not causes additional compilation events.
    106 compileSource('x=1; //# sourceURL=myscript.js');
    107 
    108 // Make sure that the debug event listener was invoked.
    109 assertFalse(exception, "exception in listener")
    110 
    111 // Number of before and after compile events should be the same.
    112 assertEquals(before_compile_count, after_compile_count);
    113 
    114 // Check the actual number of events (no compilation through the API as all
    115 // source compiled through eval).
    116 assertEquals(source_count, after_compile_count);
    117 assertEquals(0, host_compilations);
    118 assertEquals(source_count, eval_compilations);
    119 
    120 Debug.setListener(null);
    121