Support scope information and evaluation in optimized frames

R=svenpanne@chromium.org

BUG=v8:1140
TEST=test/mjsunit/debug-evaluate-locals-optimized.js,test/mjsunit/debug-evaluate-locals-optimized-double.js

Review URL: http://codereview.chromium.org//7343005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@8633 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/mirror-debugger.js

@@ -1250,9 +1250,9 @@ const kFrameDetailsNameIndex = 0;
 const kFrameDetailsValueIndex = 1;
 const kFrameDetailsNameValueSize = 2;
 
-const kFrameDetailsFlagDebuggerFrame = 1;
-const kFrameDetailsFlagOptimizedFrame = 2;
-const kFrameDetailsFlagInlinedFrame = 4;
+const kFrameDetailsFlagDebuggerFrameMask = 1 << 0;
+const kFrameDetailsFlagOptimizedFrameMask = 1 << 1;
+const kFrameDetailsFlagInlinedFrameIndexMask = 7 << 2;
 
 /**
  * Wrapper for the frame details information retreived from the VM. The frame
@@ -1266,7 +1266,7 @@ const kFrameDetailsFlagInlinedFrame = 4;
  *     5: Source position
  *     6: Construct call
  *     7: Is at return
- *     8: Flags (debugger frame, optimized frame, inlined frame)
+ *     8: Flags (debugger frame, optimized frame, inlined frame index)
  *     Arguments name, value
  *     Locals name, value
  *     Return value if any
@@ -1312,22 +1312,27 @@ FrameDetails.prototype.isAtReturn = function() {
 
 FrameDetails.prototype.isDebuggerFrame = function() {
   %CheckExecutionState(this.break_id_);
-  var f = kFrameDetailsFlagDebuggerFrame;
+  var f = kFrameDetailsFlagDebuggerFrameMask;
   return (this.details_[kFrameDetailsFlagsIndex] & f) == f;
 }
 
 
 FrameDetails.prototype.isOptimizedFrame = function() {
   %CheckExecutionState(this.break_id_);
-  var f = kFrameDetailsFlagOptimizedFrame;
+  var f = kFrameDetailsFlagOptimizedFrameMask;
   return (this.details_[kFrameDetailsFlagsIndex] & f) == f;
 }
 
 
 FrameDetails.prototype.isInlinedFrame = function() {
+  return this.inlinedFrameIndex() > 0;
+}
+
+
+FrameDetails.prototype.inlinedFrameIndex = function() {
   %CheckExecutionState(this.break_id_);
-  var f = kFrameDetailsFlagInlinedFrame;
-  return (this.details_[kFrameDetailsFlagsIndex] & f) == f;
+  var f = kFrameDetailsFlagInlinedFrameIndexMask;
+  return (this.details_[kFrameDetailsFlagsIndex] & f) >> 2
 }
 
 
@@ -1476,6 +1481,11 @@ FrameMirror.prototype.isInlinedFrame = function() {
 };
 
 
+FrameMirror.prototype.inlinedFrameIndex = function() {
+  return this.details_.inlinedFrameIndex();
+};
+
+
 FrameMirror.prototype.argumentCount = function() {
   return this.details_.argumentCount();
 };
@@ -1565,8 +1575,12 @@ FrameMirror.prototype.scope = function(index) {
 
 
 FrameMirror.prototype.evaluate = function(source, disable_break, opt_context_object) {
-  var result = %DebugEvaluate(this.break_id_, this.details_.frameId(),
-                              source, Boolean(disable_break), opt_context_object);
+  var result = %DebugEvaluate(this.break_id_,
+                              this.details_.frameId(),
+                              this.details_.inlinedFrameIndex(),
+                              source,
+                              Boolean(disable_break),
+                              opt_context_object);
   return MakeMirror(result);
 };
 
@@ -1719,6 +1733,7 @@ function ScopeDetails(frame, index) {
   this.break_id_ = frame.break_id_;
   this.details_ = %GetScopeDetails(frame.break_id_,
                                    frame.details_.frameId(),
+                                   frame.details_.inlinedFrameIndex(),
                                    index);
 }
 

src/runtime.h

@@ -372,7 +372,7 @@ namespace internal {
   F(GetFrameCount, 1, 1) \
   F(GetFrameDetails, 2, 1) \
   F(GetScopeCount, 2, 1) \
-  F(GetScopeDetails, 3, 1) \
+  F(GetScopeDetails, 4, 1) \
   F(DebugPrintScopes, 0, 1) \
   F(GetThreadCount, 1, 1) \
   F(GetThreadDetails, 2, 1) \
@@ -385,7 +385,7 @@ namespace internal {
   F(IsBreakOnException, 1, 1) \
   F(PrepareStep, 3, 1) \
   F(ClearStepping, 0, 1) \
-  F(DebugEvaluate, 5, 1) \
+  F(DebugEvaluate, 6, 1) \
   F(DebugEvaluateGlobal, 4, 1) \
   F(DebugGetLoadedScripts, 0, 1) \
   F(DebugReferencedBy, 3, 1) \

test/mjsunit/debug-evaluate-locals-optimized-double.js

@@ -44,21 +44,44 @@ function listener(event, exec_state, event_data, data) {
       for (var i = 0; i < exec_state.frameCount(); i++) {
         var frame = exec_state.frame(i);
         if (i < exec_state.frameCount() - 1) {
-        // All frames except the bottom one has normal variables a and b.
+          var expected_a = i * 2 + 1 + (i * 2 + 1) / 100;
+          var expected_b = i * 2 + 2 + (i * 2 + 2) / 100;
+          var expected_x = (i + 1) * 2 + 1 + ((i + 1) * 2 + 1) / 100;
+          var expected_y = (i + 1) * 2 + 2 + ((i + 1) * 2 + 2) / 100;
+
+          // All frames except the bottom one has normal variables a and b.
           assertEquals('a', frame.localName(0));
           assertEquals('b', frame.localName(1));
-          assertEquals(i * 2 + 1 + (i * 2 + 1) / 100,
-                       frame.localValue(0).value());
-          assertEquals(i * 2 + 2 + (i * 2 + 2) / 100,
-                       frame.localValue(1).value());
+          assertEquals(expected_a, frame.localValue(0).value());
+          assertEquals(expected_b, frame.localValue(1).value());
 
           // All frames except the bottom one has arguments variables x and y.
           assertEquals('x', frame.argumentName(0));
           assertEquals('y', frame.argumentName(1));
-          assertEquals((i + 1) * 2 + 1 + ((i + 1) * 2 + 1) / 100,
-                       frame.argumentValue(0).value());
-          assertEquals((i + 1) * 2 + 2 + ((i + 1) * 2 + 2) / 100,
-                       frame.argumentValue(1).value());
+          assertEquals(expected_x, frame.argumentValue(0).value());
+          assertEquals(expected_y, frame.argumentValue(1).value());
+
+          // All frames except the bottom one have two scopes.
+          assertEquals(2, frame.scopeCount());
+          assertEquals(debug.ScopeType.Local, frame.scope(0).scopeType());
+          assertEquals(debug.ScopeType.Global, frame.scope(1).scopeType());
+          assertEquals(expected_a, frame.scope(0).scopeObject().value()['a']);
+          assertEquals(expected_b, frame.scope(0).scopeObject().value()['b']);
+          assertEquals(expected_x, frame.scope(0).scopeObject().value()['x']);
+          assertEquals(expected_y, frame.scope(0).scopeObject().value()['y']);
+
+          // Evaluate in the inlined frame.
+          assertEquals(expected_a, frame.evaluate('a').value());
+          assertEquals(expected_x, frame.evaluate('x').value());
+          assertEquals(expected_x, frame.evaluate('arguments[0]').value());
+          assertEquals(expected_a + expected_b + expected_x + expected_y,
+                       frame.evaluate('a + b + x + y').value());
+          assertEquals(expected_x + expected_y,
+                       frame.evaluate('arguments[0] + arguments[1]').value());
+        } else {
+          // The bottom frame only have the global scope.
+          assertEquals(1, frame.scopeCount());
+          assertEquals(debug.ScopeType.Global, frame.scope(0).scopeType());
         }
 
         // Check the frame function.
@@ -75,12 +98,13 @@ function listener(event, exec_state, event_data, data) {
         // Check for construct call.
         assertEquals(testingConstructCall && i == 4, frame.isConstructCall());
 
-        // When function f is optimized (2 means YES, see runtime.cc) we
+        // When function f is optimized (1 means YES, see runtime.cc) we
         // expect an optimized frame for f with g1, g2 and g3 inlined.
-        if (%GetOptimizationStatus(f) == 2) {
+        if (%GetOptimizationStatus(f) == 1) {
           if (i == 1 || i == 2 || i == 3) {
             assertTrue(frame.isOptimizedFrame());
             assertTrue(frame.isInlinedFrame());
+            assertEquals(4 - i, frame.inlinedFrameIndex());
           } else if (i == 4) {
             assertTrue(frame.isOptimizedFrame());
             assertFalse(frame.isInlinedFrame());

test/mjsunit/debug-evaluate-locals-optimized.js

@@ -44,17 +44,44 @@ function listener(event, exec_state, event_data, data) {
       for (var i = 0; i < exec_state.frameCount(); i++) {
         var frame = exec_state.frame(i);
         if (i < exec_state.frameCount() - 1) {
+          var expected_a = i * 2 + 1;
+          var expected_b = i * 2 + 2;
+          var expected_x = (i + 1) * 2 + 1;
+          var expected_y = (i + 1) * 2 + 2;
+
           // All frames except the bottom one has normal variables a and b.
           assertEquals('a', frame.localName(0));
           assertEquals('b', frame.localName(1));
-          assertEquals(i * 2 + 1, frame.localValue(0).value());
-          assertEquals(i * 2 + 2, frame.localValue(1).value());
+          assertEquals(expected_a, frame.localValue(0).value());
+          assertEquals(expected_b, frame.localValue(1).value());
 
           // All frames except the bottom one has arguments variables x and y.
           assertEquals('x', frame.argumentName(0));
           assertEquals('y', frame.argumentName(1));
-          assertEquals((i + 1) * 2 + 1, frame.argumentValue(0).value());
-          assertEquals((i + 1) * 2 + 2, frame.argumentValue(1).value());
+          assertEquals(expected_x, frame.argumentValue(0).value());
+          assertEquals(expected_y, frame.argumentValue(1).value());
+
+          // All frames except the bottom one have two scopes.
+          assertEquals(2, frame.scopeCount());
+          assertEquals(debug.ScopeType.Local, frame.scope(0).scopeType());
+          assertEquals(debug.ScopeType.Global, frame.scope(1).scopeType());
+          assertEquals(expected_a, frame.scope(0).scopeObject().value()['a']);
+          assertEquals(expected_b, frame.scope(0).scopeObject().value()['b']);
+          assertEquals(expected_x, frame.scope(0).scopeObject().value()['x']);
+          assertEquals(expected_y, frame.scope(0).scopeObject().value()['y']);
+
+          // Evaluate in the inlined frame.
+          assertEquals(expected_a, frame.evaluate('a').value());
+          assertEquals(expected_x, frame.evaluate('x').value());
+          assertEquals(expected_x, frame.evaluate('arguments[0]').value());
+          assertEquals(expected_a + expected_b + expected_x + expected_y,
+                       frame.evaluate('a + b + x + y').value());
+          assertEquals(expected_x + expected_y,
+                       frame.evaluate('arguments[0] + arguments[1]').value());
+        } else {
+          // The bottom frame only have the global scope.
+          assertEquals(1, frame.scopeCount());
+          assertEquals(debug.ScopeType.Global, frame.scope(0).scopeType());
         }
 
         // Check the frame function.
@@ -71,12 +98,13 @@ function listener(event, exec_state, event_data, data) {
         // Check for construct call.
         assertEquals(testingConstructCall && i == 4, frame.isConstructCall());
 
-        // When function f is optimized (2 means YES, see runtime.cc) we
+        // When function f is optimized (1 means YES, see runtime.cc) we
         // expect an optimized frame for f with g1, g2 and g3 inlined.
-        if (%GetOptimizationStatus(f) == 2) {
+        if (%GetOptimizationStatus(f) == 1) {
           if (i == 1 || i == 2 || i == 3) {
             assertTrue(frame.isOptimizedFrame());
             assertTrue(frame.isInlinedFrame());
+            assertEquals(4 - i, frame.inlinedFrameIndex());
           } else if (i == 4) {
             assertTrue(frame.isOptimizedFrame());
             assertFalse(frame.isInlinedFrame());