Add "Version" command

Review URL: http://codereview.chromium.org/274080


git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@3108 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/debug-delay.js

@@ -1243,6 +1243,8 @@ DebugCommandProcessor.prototype.processDebugJSONRequest = function(json_request)
         this.threadsRequest_(request, response);
       } else if (request.command == 'suspend') {
         this.suspendRequest_(request, response);
+      } else if (request.command == 'version') {
+        this.versionRequest_(request, response);
       } else {
         throw new Error('Unknown command "' + request.command + '" in request');
       }
@@ -1911,11 +1913,17 @@ DebugCommandProcessor.prototype.threadsRequest_ = function(request, response) {
 
 
 DebugCommandProcessor.prototype.suspendRequest_ = function(request, response) {
-  // TODO(peter.rybin): probably we need some body field here.
   response.running = false;
 };
 
 
+DebugCommandProcessor.prototype.versionRequest_ = function(request, response) {
+  response.body = {
+    V8Version: %GetV8Version()
+  }
+};
+
+
 // Check whether the previously processed command caused the VM to become
 // running.
 DebugCommandProcessor.prototype.isRunning = function() {

src/runtime.cc

@@ -7766,6 +7766,18 @@ static Object* Runtime_CollectStackTrace(Arguments args) {
 }
 
 
+// Returns V8 version as a string.
+static Object* Runtime_GetV8Version(Arguments args) {
+  ASSERT_EQ(args.length(), 0);
+
+  NoHandleAllocation ha;
+
+  const char* version_string = v8::V8::GetVersion();
+
+  return Heap::AllocateStringFromAscii(CStrVector(version_string), NOT_TENURED);
+}
+
+
 static Object* Runtime_Abort(Arguments args) {
   ASSERT(args.length() == 2);
   OS::PrintError("abort: %s\n", reinterpret_cast<char*>(args[0]) +

src/runtime.h

@@ -175,6 +175,7 @@ namespace internal {
   F(FunctionIsBuiltin, 1, 1) \
   F(GetScript, 1, 1) \
   F(CollectStackTrace, 2, 1) \
+  F(GetV8Version, 0, 1) \
   \
   F(ClassOf, 1, 1) \
   F(SetCode, 2, 1) \

test/mjsunit/debug-version.js

@@ -0,0 +1,90 @@
+// Copyright 2008 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
+
+// Simple function which stores the last debug event.
+listenerComplete = false;
+exception = false;
+
+var base_version_request = '"seq":0,"type":"request","command":"version"'
+
+function safeEval(code) {
+  try {
+    return eval('(' + code + ')');
+  } catch (e) {
+    assertEquals(void 0, e);
+    return undefined;
+  }
+}
+
+function testArguments(exec_state) {
+  // Get the debug command processor in running state.
+  var dcp = exec_state.debugCommandProcessor(true);
+
+  assertTrue(dcp.isRunning());
+
+  var version_request = '{' + base_version_request + '}'
+  var version_response = safeEval(dcp.processDebugJSONRequest(version_request));
+
+  assertTrue(version_response.success);
+
+  var version_string = version_response.body.V8Version;
+
+  assertTrue(!!version_string, version_request + ' -> expected version string');
+
+  var version_pattern = /^\d*\.\d*\.\d*/;
+
+  assertTrue(!!(version_string.match(version_pattern)), "unexpected format of version: " + version_string);
+}
+
+function listener(event, exec_state, event_data, data) {
+  try {
+    if (event == Debug.DebugEvent.Break) {
+
+      // Test simple suspend request.
+      testArguments(exec_state);
+
+      // Indicate that all was processed.
+      listenerComplete = true;
+    }
+  } catch (e) {
+    exception = e
+  };
+};
+
+// Add the debug event listener.
+Debug.setListener(listener);
+
+// Stop debugger and check that suspend command changes running flag.
+debugger;
+
+assertFalse(exception, "exception in listener")
+// Make sure that the debug event listener vas invoked.
+assertTrue(listenerComplete, "listener did not run to completion");