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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 compile_error_count = 0;
     36 var current_source = '';  // Current source being compiled.
     37 var source_count = 0;  // Total number of scources compiled.
     38 var host_compilations = 0;  // Number of scources compiled through the API.
     39 var eval_compilations = 0;  // Number of scources compiled through eval.
     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         event == Debug.DebugEvent.CompileError) {
     54       // Count the events.
     55       if (event == Debug.DebugEvent.BeforeCompile) {
     56         before_compile_count++;
     57       } else if (event == Debug.DebugEvent.AfterCompile) {
     58         after_compile_count++;
     59         switch (event_data.script().compilationType()) {
     60           case Debug.ScriptCompilationType.Host:
     61             host_compilations++;
     62             break;
     63           case Debug.ScriptCompilationType.Eval:
     64             eval_compilations++;
     65             break;
     66         }
     67       } else {
     68         compile_error_count++;
     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 {
     78         // For source without 'eval' there will be a compile events with the
     79         // exact source.
     80         assertEquals(current_source, event_data.script().source());
     81       }
     82       // Check that script context is included into the event message.
     83       var json = event_data.toJSONProtocol();
     84       var msg = eval('(' + json + ')');
     85       assertTrue('context' in msg.body.script);
     86 
     87       // Check that we pick script name from //# sourceURL, iff present
     88       if (event == Debug.DebugEvent.AfterCompile) {
     89         assertEquals(current_source.indexOf('sourceURL') >= 0 ?
     90             'myscript.js' : undefined,
     91                      event_data.script().name());
     92       }
     93     }
     94   } catch (e) {
     95     exception = e
     96   }
     97 };
     98 
     99 
    100 // Add the debug event listener.
    101 Debug.setListener(listener);
    102 
    103 // Compile different sources.
    104 compileSource('a=1');
    105 compileSource('(function(){})');
    106 compileSource('eval("a=2")');
    107 source_count++;  // Using eval causes additional compilation event.
    108 compileSource('eval("eval(\'(function(){return a;})\')")');
    109 source_count += 2;  // Using eval causes additional compilation event.
    110 compileSource('JSON.parse(\'{"a":1,"b":2}\')');
    111 // Using JSON.parse does not causes additional compilation events.
    112 compileSource('x=1; //# sourceURL=myscript.js');
    113 
    114 try {
    115   compileSource('}');
    116 } catch(e) {
    117 }
    118 
    119 // Make sure that the debug event listener was invoked.
    120 assertFalse(exception, "exception in listener")
    121 
    122 // Number of before and after + error events should be the same.
    123 assertEquals(before_compile_count, after_compile_count + compile_error_count);
    124 assertEquals(compile_error_count, 1);
    125 
    126 // Check the actual number of events (no compilation through the API as all
    127 // source compiled through eval).
    128 assertEquals(source_count, after_compile_count);
    129 assertEquals(0, host_compilations);
    130 assertEquals(source_count, eval_compilations);
    131 
    132 Debug.setListener(null);
    133