Home | History | Annotate | Download | only in mjsunit 
      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 var json_compilations = 0;  // Number of scources compiled through JSON.parse.
     40 
     41 
     42 function compileSource(source) {
     43   current_source = source;
     44   eval(current_source);
     45   source_count++;
     46 }
     47 
     48 
     49 function listener(event, exec_state, event_data, data) {
     50   try {
     51     if (event == Debug.DebugEvent.BeforeCompile ||
     52         event == Debug.DebugEvent.AfterCompile) {
     53       // Count the events.
     54       if (event == Debug.DebugEvent.BeforeCompile) {
     55         before_compile_count++;
     56       } else {
     57         after_compile_count++;
     58         switch (event_data.script().compilationType()) {
     59           case Debug.ScriptCompilationType.Host:
     60             host_compilations++;
     61             break;
     62           case Debug.ScriptCompilationType.Eval:
     63             eval_compilations++;
     64             break;
     65           case Debug.ScriptCompilationType.JSON:
     66             json_compilations++;
     67             break;
     68         }
     69       }
     70 
     71       // If the compiled source contains 'eval' there will be additional compile
     72       // events for the source inside eval.
     73       if (current_source.indexOf('eval') == 0) {
     74         // For source with 'eval' there will be compile events with substrings
     75         // as well as with with the exact source.
     76         assertTrue(current_source.indexOf(event_data.script().source()) >= 0);
     77       } else if (current_source.indexOf('JSON.parse') == 0) {
     78         // For JSON the JSON source will be in parentheses.
     79         var s = event_data.script().source();
     80         if (s[0] == '(') {
     81           s = s.substring(1, s.length - 2);
     82         }
     83         assertTrue(current_source.indexOf(s) >= 0);
     84       } else {
     85         // For source without 'eval' there will be a compile events with the
     86         // exact source.
     87         assertEquals(current_source, event_data.script().source());
     88       }
     89       // Check that script context is included into the event message.
     90       var json = event_data.toJSONProtocol();
     91       var msg = eval('(' + json + ')');
     92       assertTrue('context' in msg.body.script);
     93 
     94       // Check that we pick script name from //@ sourceURL, iff present
     95       assertEquals(current_source.indexOf('sourceURL') >= 0 ? 
     96                      'myscript.js' : undefined,
     97                    event_data.script().name());
     98     }
     99   } catch (e) {
    100     exception = e
    101   }
    102 };
    103 
    104 
    105 // Add the debug event listener.
    106 Debug.setListener(listener);
    107 
    108 // Compile different sources.
    109 compileSource('a=1');
    110 compileSource('(function(){})');
    111 compileSource('eval("a=2")');
    112 source_count++;  // Using eval causes additional compilation event.
    113 compileSource('eval("eval(\'(function(){return a;})\')")');
    114 source_count += 2;  // Using eval causes additional compilation event.
    115 compileSource('JSON.parse(\'{"a":1,"b":2}\')');
    116 source_count++;  // Using JSON.parse causes additional compilation event.
    117 compileSource('x=1; //@ sourceURL=myscript.js');
    118 
    119 // Make sure that the debug event listener was invoked.
    120 assertFalse(exception, "exception in listener")
    121 
    122 // Number of before and after compile events should be the same.
    123 assertEquals(before_compile_count, after_compile_count);
    124 
    125 // Check the actual number of events (no compilation through the API as all
    126 // source compiled through eval except for one JSON.parse call).
    127 assertEquals(source_count, after_compile_count);
    128 assertEquals(0, host_compilations);
    129 assertEquals(source_count - 1, eval_compilations);
    130 assertEquals(1, json_compilations);
    131 
    132 Debug.setListener(null);
    133