Add function inferred name to FunctionMirror and its json representation.

Review URL: http://codereview.chromium.org/109026

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1871 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/mirror-delay.js

@@ -755,6 +755,15 @@ FunctionMirror.prototype.name = function() {
 };
 
 
+/**
+ * Returns the inferred name of the function.
+ * @return {string} Name of the function
+ */
+FunctionMirror.prototype.inferredName = function() {
+  return %FunctionGetInferredName(this.value_);
+};
+
+
 /**
  * Returns the source code for the function.
  * @return {string or undefined} The source code for the function. If the
@@ -857,6 +866,11 @@ UnresolvedFunctionMirror.prototype.name = function() {
 };
 
 
+UnresolvedFunctionMirror.prototype.inferredName = function() {
+  return undefined;
+};
+
+
 UnresolvedFunctionMirror.prototype.propertyNames = function(kind, limit) {
   return [];
 }
@@ -1835,6 +1849,10 @@ JSONProtocolSerializer.prototype.serializeObject_ = function(mirror, content,
   if (mirror.isFunction()) {
     // Add function specific properties.
     content.push(MakeJSONPair_('name', StringToJSON_(mirror.name())));
+    if (!IS_UNDEFINED(mirror.inferredName())) {
+      content.push(MakeJSONPair_('inferredName',
+                                 StringToJSON_(mirror.inferredName())));
+    }
     content.push(MakeJSONPair_('resolved', BooleanToJSON_(mirror.resolved())));
     if (mirror.resolved()) {
       content.push(MakeJSONPair_('source', StringToJSON_(mirror.source())));

src/runtime.cc

@@ -6860,6 +6860,15 @@ static Object* Runtime_FunctionGetAssemblerCode(Arguments args) {
 #endif  // DEBUG
   return Heap::undefined_value();
 }
+
+
+static Object* Runtime_FunctionGetInferredName(Arguments args) {
+  NoHandleAllocation ha;
+  ASSERT(args.length() == 1);
+
+  CONVERT_CHECKED(JSFunction, f, args[0]);
+  return f->shared()->inferred_name();
+}
 #endif  // ENABLE_DEBUGGER_SUPPORT
 
 

src/runtime.h

@@ -298,7 +298,8 @@ namespace v8 { namespace internal {
   F(DebugConstructedBy, 2) \
   F(DebugGetPrototype, 1) \
   F(SystemBreak, 0) \
-  F(FunctionGetAssemblerCode, 1)
+  F(FunctionGetAssemblerCode, 1) \
+  F(FunctionGetInferredName, 1)
 #else
 #define RUNTIME_FUNCTION_LIST_DEBUGGER_SUPPORT(F)
 #endif

test/mjsunit/debug-backtrace.js

@@ -32,10 +32,14 @@ function f(x, y) {
   a=1;
 };
 
-function g() {
+var m = function() {
   new f(1);
 };
 
+function g() {
+ m();
+};
+
 
 // Get the Debug object exposed from the debug context global object.
 Debug = debug.Debug
@@ -90,22 +94,26 @@ function listener(event, exec_state, event_data, data) {
     // Get the backtrace.
     var json;
     json = '{"seq":0,"type":"request","command":"backtrace"}'
-    response = new ParsedResponse(dcp.processDebugJSONRequest(json));
+    var resp = dcp.processDebugJSONRequest(json);
+    response = new ParsedResponse(resp);
     backtrace = response.body();
     assertEquals(0, backtrace.fromFrame);
-    assertEquals(3, backtrace.toFrame);
-    assertEquals(3, backtrace.totalFrames);
+    assertEquals(4, backtrace.toFrame);
+    assertEquals(4, backtrace.totalFrames);
     var frames = backtrace.frames;
-    assertEquals(3, frames.length);
+    assertEquals(4, frames.length);
     for (var i = 0; i < frames.length; i++) {
       assertEquals('frame', frames[i].type);
     }
     assertEquals(0, frames[0].index);
     assertEquals("f", response.lookup(frames[0].func.ref).name);
     assertEquals(1, frames[1].index);
-    assertEquals("g", response.lookup(frames[1].func.ref).name);
+    assertEquals("", response.lookup(frames[1].func.ref).name);
+    assertEquals("m", response.lookup(frames[1].func.ref).inferredName);
     assertEquals(2, frames[2].index);
-    assertEquals("", response.lookup(frames[2].func.ref).name);
+    assertEquals("g", response.lookup(frames[2].func.ref).name);
+    assertEquals(3, frames[3].index);
+    assertEquals("", response.lookup(frames[3].func.ref).name);
 
     // Get backtrace with two frames.
     json = '{"seq":0,"type":"request","command":"backtrace","arguments":{"fromFrame":1,"toFrame":3}}'
@@ -113,16 +121,17 @@ function listener(event, exec_state, event_data, data) {
     backtrace = response.body();
     assertEquals(1, backtrace.fromFrame);
     assertEquals(3, backtrace.toFrame);
-    assertEquals(3, backtrace.totalFrames);
+    assertEquals(4, backtrace.totalFrames);
     var frames = backtrace.frames;
     assertEquals(2, frames.length);
     for (var i = 0; i < frames.length; i++) {
       assertEquals('frame', frames[i].type);
     }
     assertEquals(1, frames[0].index);
-    assertEquals("g", response.lookup(frames[0].func.ref).name);
+    assertEquals("", response.lookup(frames[0].func.ref).name);
+    assertEquals("m", response.lookup(frames[0].func.ref).inferredName);
     assertEquals(2, frames[1].index);
-    assertEquals("", response.lookup(frames[1].func.ref).name);
+    assertEquals("g", response.lookup(frames[1].func.ref).name);
 
     // Get the individual frames.
     json = '{"seq":0,"type":"request","command":"frame"}'
@@ -158,16 +167,17 @@ function listener(event, exec_state, event_data, data) {
     response = new ParsedResponse(dcp.processDebugJSONRequest(json));
     frame = response.body();
     assertEquals(1, frame.index);
-    assertEquals("g", response.lookup(frame.func.ref).name);
+    assertEquals("", response.lookup(frame.func.ref).name);
+    assertEquals("m", response.lookup(frame.func.ref).inferredName);
     assertFalse(frame.constructCall);
     assertEquals(35, frame.line);
     assertEquals(2, frame.column);
     assertEquals(0, frame.arguments.length);
 
-    json = '{"seq":0,"type":"request","command":"frame","arguments":{"number":2}}'
+    json = '{"seq":0,"type":"request","command":"frame","arguments":{"number":3}}'
     response = new ParsedResponse(dcp.processDebugJSONRequest(json));
     frame = response.body();
-    assertEquals(2, frame.index);
+    assertEquals(3, frame.index);
     assertEquals("", response.lookup(frame.func.ref).name);
 
     // Source slices for the individual frames (they all refer to this script).

test/mjsunit/mirror-unresolved-function.js

@@ -57,6 +57,7 @@ assertEquals('function', mirror.type());
 assertFalse(mirror.isPrimitive());
 assertEquals("Function", mirror.className());
 assertEquals("f", mirror.name());
+assertEquals('undefined', typeof mirror.inferredName());
 assertFalse(mirror.resolved());
 assertEquals(void 0, mirror.source());
 assertEquals('undefined', mirror.constructorFunction().type());
@@ -75,4 +76,5 @@ assertEquals(mirror.prototypeObject().handle(), fromJSON.prototypeObject.ref, 'U
 assertEquals('undefined', refs.lookup(fromJSON.prototypeObject.ref).type, 'Unexpected prototype object type in JSON');
 assertFalse(fromJSON.resolved);
 assertEquals("f", fromJSON.name);
+assertFalse('inferredName' in fromJSON);
 assertEquals(void 0, fromJSON.source);