[debugger] Basic scope functionality and exception events in wrapper

BUG=v8:5530

Review-Url: https://codereview.chromium.org/2487673002
Cr-Commit-Position: refs/heads/master@{#40840}

test/debugger/debug/debug-allscopes-on-debugger.js

@@ -2,22 +2,16 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --expose-debug-as debug
 
 Debug = debug.Debug
 var exception = null;
 var break_count = 0;
+const expected_breaks = 8;
 
 function listener(event, exec_state, event_data, data) {
   try {
     if (event == Debug.DebugEvent.Break) {
       assertTrue(exec_state.frameCount() != 0, "FAIL: Empty stack trace");
-      // Count number of expected breakpoints in this source file.
-      if (!break_count) {
-        var source_text = exec_state.frame(0).func().script().source();
-        expected_breaks = source_text.match(/\/\/\s*Break\s+\d+\./g).length;
-        print("Expected breaks: " + expected_breaks);
-      }
       var frameMirror = exec_state.frame(0);
 
       frameMirror.allScopes();

test/debugger/debug/es6/debug-promises/promise-all-caught.js

@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --expose-debug-as debug --allow-natives-syntax
 
 // Test debug events when we only listen to uncaught exceptions and a
 // Promise p3 created by Promise.all has a catch handler, and is rejected

test/debugger/debug/es6/debug-promises/promise-race-caught.js

@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --expose-debug-as debug --allow-natives-syntax
 
 // Test debug events when we only listen to uncaught exceptions and a
 // Promise p3 created by Promise.race has a catch handler, and is rejected

test/debugger/debug/es6/debug-promises/reentry.js

@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --expose-debug-as debug
 
 // Test reentry of special try catch for Promises.
 

test/debugger/debug/es6/debug-promises/reject-caught-late.js

@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --expose-debug-as debug --allow-natives-syntax
 
 // Test debug events when we only listen to uncaught exceptions, the Promise
 // is rejected, and a catch handler is installed right before the rejection.

test/debugger/debug/es6/debug-promises/reject-caught-uncaught.js

@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --expose-debug-as debug --allow-natives-syntax
 
 // Test debug events when we only listen to uncaught exceptions and
 // there is a catch handler for the to-be-rejected Promise.

test/debugger/debug/es6/debug-promises/stepin-handler.js

@@ -8,18 +8,12 @@
 Debug = debug.Debug
 var exception = null;
 var break_count = 0;
-var expected_breaks = -1;
+const expected_breaks = 9;
 
 function listener(event, exec_state, event_data, data) {
   try {
     if (event == Debug.DebugEvent.Break) {
       assertTrue(exec_state.frameCount() != 0, "FAIL: Empty stack trace");
-      if (!break_count) {
-        // Count number of expected breakpoints in this source file.
-        var source_text = exec_state.frame(0).func().script().source();
-        expected_breaks = source_text.match(/\/\/\s*Break\s+\d+\./g).length;
-        print("Expected breaks: " + expected_breaks);
-      }
       var source = exec_state.frame(0).sourceLineText();
       print("paused at: " + source);
       assertTrue(source.indexOf("// Break " + break_count + ".") > 0,

test/debugger/debug/es6/debug-promises/throw-caught-late.js

@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --expose-debug-as debug --allow-natives-syntax
 
 // Test debug events when we only listen to uncaught exceptions, the Promise
 // throws, and a catch handler is installed right before throwing.

test/debugger/debug/es6/debug-promises/throw-caught-uncaught.js

@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --expose-debug-as debug --allow-natives-syntax
 
 // Test debug events when we only listen to uncaught exceptions and
 // there is a catch handler for the exception thrown in a Promise.

test/debugger/debug/es6/debug-promises/throw-eventually-caught.js

@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --expose-debug-as debug --allow-natives-syntax
 
 // Test debug events when we only listen to uncaught exceptions and
 // there is a catch handler for the to-be-rejected Promise.

test/debugger/debug/es6/regress/regress-3280.js

@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --expose-debug-as debug
 
 var Debug = debug.Debug;
 

test/debugger/debug/harmony/async-debug-caught-exception-cases.js

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --allow-natives-syntax --harmony-async-await --expose-debug-as debug
+// Flags: --harmony-async-await
 
 Debug = debug.Debug
 

test/debugger/debug/harmony/async-debug-caught-exception-cases0.js

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --allow-natives-syntax --harmony-async-await --expose-debug-as debug
-// Files: test/mjsunit/harmony/async-debug-caught-exception-cases.js
+// Flags: --harmony-async-await
+// Files: test/debugger/debug/harmony/async-debug-caught-exception-cases.js
 
 runPart(0);

test/debugger/debug/harmony/async-debug-caught-exception-cases1.js

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --allow-natives-syntax --harmony-async-await --expose-debug-as debug
-// Files: test/mjsunit/harmony/async-debug-caught-exception-cases.js
+// Flags: --harmony-async-await
+// Files: test/debugger/debug/harmony/async-debug-caught-exception-cases.js
 
 runPart(1);

test/debugger/debug/harmony/async-debug-caught-exception-cases2.js

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --allow-natives-syntax --harmony-async-await --expose-debug-as debug
-// Files: test/mjsunit/harmony/async-debug-caught-exception-cases.js
+// Flags: --harmony-async-await
+// Files: test/debugger/debug/harmony/async-debug-caught-exception-cases.js
 
 runPart(2);

test/debugger/debug/harmony/async-debug-caught-exception-cases3.js

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --allow-natives-syntax --harmony-async-await --expose-debug-as debug
-// Files: test/mjsunit/harmony/async-debug-caught-exception-cases.js
+// Flags: --harmony-async-await
+// Files: test/debugger/debug/harmony/async-debug-caught-exception-cases.js
 
 runPart(3);

test/debugger/debug/harmony/async-debug-caught-exception.js

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --allow-natives-syntax --harmony-async-await --expose-debug-as debug
+// Flags: --harmony-async-await
 
 Debug = debug.Debug
 

test/debugger/debug/harmony/async-debug-step-continue-at-break.js

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --expose-debug-as debug --allow-natives-syntax --harmony-async-await
+// Flags: --harmony-async-await
 
 var Debug = debug.Debug;
 var step_count = 0;

test/debugger/debug/harmony/async-debug-step-in-and-out.js

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --expose-debug-as debug --allow-natives-syntax --harmony-async-await
+// Flags: --harmony-async-await
 
 var Debug = debug.Debug;
 var step_count = 0;

test/debugger/debug/harmony/async-debug-step-in.js

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --expose-debug-as debug --allow-natives-syntax --harmony-async-await
+// Flags: --harmony-async-await
 
 var Debug = debug.Debug;
 var step_count = 0;

test/debugger/debug/harmony/async-debug-step-nested.js

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --expose-debug-as debug --allow-natives-syntax --harmony-async-await
+// Flags: --harmony-async-await
 
 var Debug = debug.Debug;
 var step_count = 0;

test/debugger/debug/harmony/async-debug-step-next-constant.js

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --expose-debug-as debug --allow-natives-syntax --harmony-async-await
+// Flags: --harmony-async-await
 
 var Debug = debug.Debug;
 var step_count = 0;

test/debugger/debug/harmony/async-debug-step-next.js

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --expose-debug-as debug --allow-natives-syntax --harmony-async-await
+// Flags: --harmony-async-await
 
 var Debug = debug.Debug;
 var step_count = 0;

test/debugger/debug/regress/regress-4309-1.js

@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --expose-debug-as debug --allow-natives-syntax
 
 var Debug = debug.Debug;
 

test/debugger/debug/regress/regress-4309-3.js

@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --expose-debug-as debug --allow-natives-syntax
 
 var Debug = debug.Debug;
 

test/debugger/debug/regress/regress-4703.js

@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --expose-debug-as debug
 
 var exception = null;
 

test/debugger/debug/regress/regress-crbug-609046.js

@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --expose-debug-as debug
 
 // Test that hidden scopes are correctly walked in the scope chain.
 

test/debugger/debug/regress/regress-crbug-633999.js

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --expose-debug-as debug --allow-natives-syntax --noturbo
+// Flags: --noturbo
 
 var Debug = debug.Debug
 var exception = null;

test/debugger/test-api.js

@@ -220,10 +220,33 @@ class DebugWrapper {
     }
   }
 
+  execStateScopeType(type) {
+    switch (type) {
+      case "global": return this.ScopeType.Global;
+      case "local": return this.ScopeType.Local;
+      case "with": return this.ScopeType.With;
+      case "closure": return this.ScopeType.Closure;
+      case "catch": return this.ScopeType.Catch;
+      case "block": return this.ScopeType.Block;
+      case "script": return this.ScopeType.Script;
+      default: %AbortJS("Unexpected scope type");
+    }
+  }
+
+  // Returns an array of property descriptors of the scope object.
+  // This is in contrast to the original API, which simply passed object
+  // mirrors.
+  execStateScopeObject(obj) {
+    const {msgid, msg} = this.createMessage(
+        "Runtime.getProperties", { objectId : obj.objectId });
+    this.sendMessage(msg);
+    const reply = this.takeReplyChecked(msgid);
+    return { value : () => reply.result.result };
+  }
+
   execStateScope(scope) {
-    // TODO(jgruber): Mapping
-    return { scopeType: () => scope.type,
-             scopeObject: () => scope.object
+    return { scopeType : () => this.execStateScopeType(scope.type),
+             scopeObject : () => this.execStateScopeObject(scope.object)
            };
   }
 
@@ -237,7 +260,9 @@ class DebugWrapper {
              functionName : () => frame.functionName,
              func : () => func,
              scopeCount : () => frame.scopeChain.length,
-             scope : (index) => this.execStateScope(frame.scopeChain[index])
+             scope : (index) => this.execStateScope(frame.scopeChain[index]),
+             allScopes : () => frame.scopeChain.map(
+                 this.execStateScope.bind(this))
            };
   }
 
@@ -255,6 +280,18 @@ class DebugWrapper {
   handleDebuggerPaused(message) {
     const params = message.params;
 
+    var debugEvent;
+    switch (params.reason) {
+      case "exception":
+      case "promiseRejection":
+        debugEvent = this.DebugEvent.Exception;
+        break;
+      default:
+        // TODO(jgruber): More granularity.
+        debugEvent = this.DebugEvent.Break;
+        break;
+    }
+
     // Skip break events in this file.
     if (params.callFrames[0].location.scriptId == this.thisScriptId) return;
 
@@ -267,7 +304,7 @@ class DebugWrapper {
                       frameCount : () => params.callFrames.length
                     };
     let eventData = this.execStateFrame(params.callFrames[0]);
-    this.invokeListener(this.DebugEvent.Break, execState, eventData);
+    this.invokeListener(debugEvent, execState, eventData);
   }
 
   handleDebuggerScriptParsed(message) {
@@ -291,6 +328,7 @@ class DebugWrapper {
 
 // Simulate the debug object generated by --expose-debug-as debug.
 var debug = { instance : undefined };
+
 Object.defineProperty(debug, 'Debug', { get: function() {
   if (!debug.instance) {
     debug.instance = new DebugWrapper();
@@ -298,3 +336,8 @@ Object.defineProperty(debug, 'Debug', { get: function() {
   }
   return debug.instance;
 }});
+
+Object.defineProperty(debug, 'ScopeType', { get: function() {
+  const instance = debug.Debug;
+  return instance.ScopeType;
+}});

test/debugger/testcfg.py

@@ -8,6 +8,7 @@ import re
 from testrunner.local import testsuite
 from testrunner.objects import testcase
 
+FILES_PATTERN = re.compile(r"//\s+Files:(.*)")
 FLAGS_PATTERN = re.compile(r"//\s+Flags:(.*)")
 
 class DebuggerTestSuite(testsuite.TestSuite):
@@ -38,9 +39,21 @@ class DebuggerTestSuite(testsuite.TestSuite):
     for match in flags_match:
       flags += match.strip().split()
 
+    files_list = []  # List of file names to append to command arguments.
+    files_match = FILES_PATTERN.search(source);
+    # Accept several lines of 'Files:'.
+    while True:
+      if files_match:
+        files_list += files_match.group(1).strip().split()
+        files_match = FILES_PATTERN.search(source, files_match.end())
+      else:
+        break
+
     files = []
     files.append(os.path.normpath(os.path.join(self.root, "..", "mjsunit", "mjsunit.js")))
     files.append(os.path.join(self.root, "test-api.js"))
+    files.extend([ os.path.normpath(os.path.join(self.root, '..', '..', f))
+                  for f in files_list ])
     files.append(os.path.join(self.root, testcase.path + self.suffix()))
 
     flags += files

test/mjsunit/es6/debug-stepin-microtasks.js

@@ -7,18 +7,12 @@
 Debug = debug.Debug
 var exception = null;
 var break_count = 0;
-var expected_breaks = -1;
+const expected_breaks = 9;
 
 function listener(event, exec_state, event_data, data) {
   try {
     if (event == Debug.DebugEvent.Break) {
       assertTrue(exec_state.frameCount() != 0, "FAIL: Empty stack trace");
-      if (!break_count) {
-        // Count number of expected breakpoints in this source file.
-        var source_text = exec_state.frame(0).func().script().source();
-        expected_breaks = source_text.match(/\/\/\s*Break\s+\d+\./g).length;
-        print("Expected breaks: " + expected_breaks);
-      }
       var source = exec_state.frame(0).sourceLineText();
       print("paused at: " + source);
       assertTrue(source.indexOf("// Break " + break_count + ".") > 0,

test/mjsunit/es6/regress/regress-468661.js

@@ -7,6 +7,7 @@
 Debug = debug.Debug
 var exception = null;
 var break_count = 0;
+const expected_breaks = 9;
 
 var expected_values =
   [ReferenceError, undefined, 0, 0, 0, 0, 1,
@@ -16,12 +17,6 @@ function listener(event, exec_state, event_data, data) {
   try {
     if (event == Debug.DebugEvent.Break) {
       assertTrue(exec_state.frameCount() != 0, "FAIL: Empty stack trace");
-      // Count number of expected breakpoints in this source file.
-      if (!break_count) {
-        var source_text = exec_state.frame(0).func().script().source();
-        expected_breaks = source_text.match(/\/\/\s*Break\s+\d+\./g).length;
-        print("Expected breaks: " + expected_breaks);
-      }
       var frameMirror = exec_state.frame(0);
 
       var v = null;;