[debug-wrapper] Further extend the debug wrapper

test/mjsunit/debug-compile-event.js

-// Copyright 2009 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-//       copyright notice, this list of conditions and the following
-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-// Flags: --expose-debug-as debug
-// Get the Debug object exposed from the debug context global object.
-Debug = debug.Debug
-
-var exception = false;  // Exception in debug event listener.
-var before_compile_count = 0;
-var after_compile_count = 0;
-var compile_error_count = 0;
-var current_source = '';  // Current source being compiled.
-var source_count = 0;  // Total number of scources compiled.
-var host_compilations = 0;  // Number of scources compiled through the API.
-var eval_compilations = 0;  // Number of scources compiled through eval.
-var mute_listener = false;
-
-function compileSource(source) {
-  current_source = source;
-  eval(current_source);
-  source_count++;
-}
-
-function safeEval(code) {
-  try {
-    mute_listener = true;
-    return eval('(' + code + ')');
-  } catch (e) {
-    assertEquals(void 0, e);
-    return undefined;
-  } finally {
-    mute_listener = false;
-  }
-}
-
-function listener(event, exec_state, event_data, data) {
-  if (mute_listener) return;
-  try {
-    if (event == Debug.DebugEvent.BeforeCompile ||
-        event == Debug.DebugEvent.AfterCompile ||
-        event == Debug.DebugEvent.CompileError) {
-      // Count the events.
-      if (event == Debug.DebugEvent.BeforeCompile) {
-        before_compile_count++;
-      } else if (event == Debug.DebugEvent.AfterCompile) {
-        after_compile_count++;
-        switch (event_data.script().compilationType()) {
-          case Debug.ScriptCompilationType.Host:
-            host_compilations++;
-            break;
-          case Debug.ScriptCompilationType.Eval:
-            eval_compilations++;
-            break;
-        }
-      } else {
-        compile_error_count++;
-      }
-
-      // If the compiled source contains 'eval' there will be additional compile
-      // events for the source inside eval.
-      if (current_source.indexOf('eval') == 0) {
-        // For source with 'eval' there will be compile events with substrings
-        // as well as with with the exact source.
-        assertTrue(current_source.indexOf(event_data.script().source()) >= 0);
-      } else {
-        // For source without 'eval' there will be a compile events with the
-        // exact source.
-        assertEquals(current_source, event_data.script().source());
-      }
-      // Check that script context is included into the event message.
-      var json = event_data.toJSONProtocol();
-      var msg = safeEval(json);
-      assertTrue('context' in msg.body.script);
-
-      // Check that we pick script name from //# sourceURL, iff present
-      if (event == Debug.DebugEvent.AfterCompile) {
-        assertEquals(current_source.indexOf('sourceURL') >= 0 ?
-            'myscript.js' : undefined,
-                     event_data.script().name());
-      }
-    }
-  } catch (e) {
-    exception = e
-  }
-};
-
-
-// Add the debug event listener.
-Debug.setListener(listener);
-
-// Compile different sources.
-compileSource('a=1');
-compileSource('(function(){})');
-compileSource('eval("a=2")');
-source_count++;  // Using eval causes additional compilation event.
-compileSource('eval("eval(\'(function(){return a;})\')")');
-source_count += 2;  // Using eval causes additional compilation event.
-compileSource('JSON.parse(\'{"a":1,"b":2}\')');
-// Using JSON.parse does not causes additional compilation events.
-compileSource('x=1; //# sourceURL=myscript.js');
-
-try {
-  compileSource('}');
-} catch(e) {
-}
-
-// Make sure that the debug event listener was invoked.
-assertFalse(exception, "exception in listener")
-
-// Number of before and after + error events should be the same.
-assertEquals(before_compile_count, after_compile_count + compile_error_count);
-assertEquals(compile_error_count, 1);
-
-// Check the actual number of events (no compilation through the API as all
-// source compiled through eval).
-assertEquals(source_count, after_compile_count);
-assertEquals(0, host_compilations);
-assertEquals(source_count, eval_compilations);
-
-Debug.setListener(null);