DevTools: show internal properties first in object preview

This CL prepares the DevTools frontend to specially format objects with
these internal properties:
- [[PrimitiveValue]] > shows this value in preview alone
- [[PromiseStatus]] + [[PromiseValue]] > shows '<resolved>: "foo"'
- [[GeneratorStatus]] > shows '<suspended>'

Screenshot: http://imgur.com/a/r3rXE

Bug: 567265
Change-Id: Ic14f361e6c2402340a4f3d30bcf255ed362663c6
Reviewed-on: https://chromium-review.googlesource.com/604938
Commit-Queue: Erik Luo <luoe@chromium.org>
Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Reviewed-by: Blaise Bruer <allada@chromium.org>
Cr-Commit-Position: refs/heads/master@{#504220}

third_party/WebKit/LayoutTests/http/tests/devtools/console/console-format-es6-expected.txt

 Tests that console properly displays information about ES6 features.
 
-console-format-es6.js:15 Promise {[[PromiseStatus]]: "rejected", [[PromiseValue]]: -0}
+console-format-es6.js:15 Promise {<rejected>: -0}
 console-format-es6.js:16 [Promise]
 globals[0]
-Promise {[[PromiseStatus]]: "rejected", [[PromiseValue]]: -0}
+Promise {<rejected>: -0}
+console-format-es6.js:15 Promise {<resolved>: 1}
+console-format-es6.js:16 [Promise]
+globals[1]
+Promise {<resolved>: 1}
+console-format-es6.js:15 Promise {<pending>}
+console-format-es6.js:16 [Promise]
+globals[2]
+Promise {<pending>}
 console-format-es6.js:15 Symbol()
 console-format-es6.js:16 [Symbol()]
-globals[1]
+globals[3]
 Symbol()
 console-format-es6.js:15 Symbol(a)
 console-format-es6.js:16 [Symbol(a)]
-globals[2]
+globals[4]
 Symbol(a)
 console-format-es6.js:15 {a: Symbol(), Symbol(a): 2}
 console-format-es6.js:16 [{…}]
-globals[3]
+globals[5]
 {a: Symbol(), Symbol(a): 2}
 console-format-es6.js:15 Map(1) {{…} => {…}}
 console-format-es6.js:16 [Map(1)]
-globals[4]
+globals[6]
 Map(1) {{…} => {…}}
 console-format-es6.js:15 WeakMap {{…} => {…}}
 console-format-es6.js:16 [WeakMap]
-globals[5]
+globals[7]
 WeakMap {{…} => {…}}
 console-format-es6.js:15 Set(1) {{…}}
 console-format-es6.js:16 [Set(1)]
-globals[6]
+globals[8]
 Set(1) {{…}}
 console-format-es6.js:15 WeakSet {{…}}
 console-format-es6.js:16 [WeakSet]
-globals[7]
+globals[9]
 WeakSet {{…}}
 console-format-es6.js:15 Map(1) {Map(0) => WeakMap}
 console-format-es6.js:16 [Map(1)]
-globals[8]
+globals[10]
 Map(1) {Map(0) => WeakMap}
 console-format-es6.js:15 Map(1) {Map(1) => WeakMap}
 console-format-es6.js:16 [Map(1)]
-globals[9]
+globals[11]
 Map(1) {Map(1) => WeakMap}
 console-format-es6.js:15 Set(1) {WeakSet}
 console-format-es6.js:16 [Set(1)]
-globals[10]
+globals[12]
 Set(1) {WeakSet}
 console-format-es6.js:15 Set(1) {WeakSet}
 console-format-es6.js:16 [Set(1)]
-globals[11]
+globals[13]
 Set(1) {WeakSet}
 console-format-es6.js:15 Map(6) {" from str " => " to str ", undefined => undefined, null => null, 42 => 42, {…} => {…}, …}
 console-format-es6.js:16 [Map(6)]
-globals[12]
+globals[14]
 Map(6) {" from str " => " to str ", undefined => undefined, null => null, 42 => 42, {…} => {…}, …}
-console-format-es6.js:15 genFunction {[[GeneratorStatus]]: "suspended"}
+console-format-es6.js:15 genFunction {<suspended>}
 console-format-es6.js:16 [genFunction]
-globals[13]
-genFunction {[[GeneratorStatus]]: "suspended"}
+globals[15]
+genFunction {<suspended>}
 Expanded all messages
-console-format-es6.js:15 Promise {[[PromiseStatus]]: "rejected", [[PromiseValue]]: -0}
+console-format-es6.js:15 Promise {<rejected>: -0}
     __proto__: Promise
     [[PromiseStatus]]: "rejected"
     [[PromiseValue]]: -0
 console-format-es6.js:16 [Promise]
-    0: Promise {[[PromiseStatus]]: "rejected", [[PromiseValue]]: -0}
+    0: Promise {<rejected>: -0}
     length: 1
     __proto__: Array(0)
 globals[0]
-Promise {[[PromiseStatus]]: "rejected", [[PromiseValue]]: -0}
+Promise {<rejected>: -0}
     __proto__: Promise
     [[PromiseStatus]]: "rejected"
     [[PromiseValue]]: -0
+console-format-es6.js:15 Promise {<resolved>: 1}
+    __proto__: Promise
+    [[PromiseStatus]]: "resolved"
+    [[PromiseValue]]: 1
+console-format-es6.js:16 [Promise]
+    0: Promise {<resolved>: 1}
+    length: 1
+    __proto__: Array(0)
+globals[1]
+Promise {<resolved>: 1}
+    __proto__: Promise
+    [[PromiseStatus]]: "resolved"
+    [[PromiseValue]]: 1
+console-format-es6.js:15 Promise {<pending>}
+    __proto__: Promise
+    [[PromiseStatus]]: "pending"
+    [[PromiseValue]]: undefined
+console-format-es6.js:16 [Promise]
+    0: Promise {<pending>}
+    length: 1
+    __proto__: Array(0)
+globals[2]
+Promise {<pending>}
+    __proto__: Promise
+    [[PromiseStatus]]: "pending"
+    [[PromiseValue]]: undefined
 console-format-es6.js:15 Symbol()
 console-format-es6.js:16 [Symbol()]
     0: Symbol()
     length: 1
     __proto__: Array(0)
-globals[1]
+globals[3]
 Symbol()
 console-format-es6.js:15 Symbol(a)
 console-format-es6.js:16 [Symbol(a)]
     0: Symbol(a)
     length: 1
     __proto__: Array(0)
-globals[2]
+globals[4]
 Symbol(a)
 console-format-es6.js:15 {a: Symbol(), Symbol(a): 2}
     a: Symbol()
@@ -94,7 +128,7 @@ console-format-es6.js:16 [{…}]
     0: {a: Symbol(), Symbol(a): 2}
     length: 1
     __proto__: Array(0)
-globals[3]
+globals[5]
 {a: Symbol(), Symbol(a): 2}
     a: Symbol()
     getter: (...)
@@ -111,7 +145,7 @@ console-format-es6.js:16 [Map(1)]
     0: Map(1) {{…} => {…}}
     length: 1
     __proto__: Array(0)
-globals[4]
+globals[6]
 Map(1) {{…} => {…}}
     size: (...)
     __proto__: Map
@@ -127,7 +161,7 @@ console-format-es6.js:16 [WeakMap]
     0: WeakMap {{…} => {…}}
     length: 1
     __proto__: Array(0)
-globals[5]
+globals[7]
 WeakMap {{…} => {…}}
     __proto__: WeakMap
     [[Entries]]: Array(1)
@@ -143,7 +177,7 @@ console-format-es6.js:16 [Set(1)]
     0: Set(1) {{…}}
     length: 1
     __proto__: Array(0)
-globals[6]
+globals[8]
 Set(1) {{…}}
     size: (...)
     __proto__: Set
@@ -159,7 +193,7 @@ console-format-es6.js:16 [WeakSet]
     0: WeakSet {{…}}
     length: 1
     __proto__: Array(0)
-globals[7]
+globals[9]
 WeakSet {{…}}
     __proto__: WeakSet
     [[Entries]]: Array(1)
@@ -175,7 +209,7 @@ console-format-es6.js:16 [Map(1)]
     0: Map(1) {Map(0) => WeakMap}
     length: 1
     __proto__: Array(0)
-globals[8]
+globals[10]
 Map(1) {Map(0) => WeakMap}
     size: (...)
     __proto__: Map
@@ -192,7 +226,7 @@ console-format-es6.js:16 [Map(1)]
     0: Map(1) {Map(1) => WeakMap}
     length: 1
     __proto__: Array(0)
-globals[9]
+globals[11]
 Map(1) {Map(1) => WeakMap}
     size: (...)
     __proto__: Map
@@ -209,7 +243,7 @@ console-format-es6.js:16 [Set(1)]
     0: Set(1) {WeakSet}
     length: 1
     __proto__: Array(0)
-globals[10]
+globals[12]
 Set(1) {WeakSet}
     size: (...)
     __proto__: Set
@@ -226,7 +260,7 @@ console-format-es6.js:16 [Set(1)]
     0: Set(1) {WeakSet}
     length: 1
     __proto__: Array(0)
-globals[11]
+globals[13]
 Set(1) {WeakSet}
     size: (...)
     __proto__: Set
@@ -248,7 +282,7 @@ console-format-es6.js:16 [Map(6)]
     0: Map(6) {" from str " => " to str ", undefined => undefined, null => null, 42 => 42, {…} => {…}, …}
     length: 1
     __proto__: Array(0)
-globals[12]
+globals[14]
 Map(6) {" from str " => " to str ", undefined => undefined, null => null, 42 => 42, {…} => {…}, …}
     size: (...)
     __proto__: Map
@@ -260,23 +294,23 @@ Map(6) {" from str " => " to str ", undefined => undefined, null => null, 42 =>
         4: {Object => Object}
         5: {Array(1) => Array(1)}
         length: 6
-console-format-es6.js:15 genFunction {[[GeneratorStatus]]: "suspended"}
+console-format-es6.js:15 genFunction {<suspended>}
     __proto__: Generator
     [[GeneratorStatus]]: "suspended"
-    [[GeneratorFunction]]: ƒ *()
+    [[GeneratorFunction]]: ƒ* ()
     [[GeneratorReceiver]]: Window
-    [[GeneratorLocation]]: console-format-es6.js:59
+    [[GeneratorLocation]]: console-format-es6.js:62
     [[Scopes]]: Scopes[2]
 console-format-es6.js:16 [genFunction]
-    0: genFunction {[[GeneratorStatus]]: "suspended"}
+    0: genFunction {<suspended>}
     length: 1
     __proto__: Array(0)
-globals[13]
-genFunction {[[GeneratorStatus]]: "suspended"}
+globals[15]
+genFunction {<suspended>}
     __proto__: Generator
     [[GeneratorStatus]]: "suspended"
-    [[GeneratorFunction]]: ƒ *()
+    [[GeneratorFunction]]: ƒ* ()
     [[GeneratorReceiver]]: Window
-    [[GeneratorLocation]]: console-format-es6.js:59
+    [[GeneratorLocation]]: console-format-es6.js:62
     [[Scopes]]: Scopes[2]
 

third_party/WebKit/LayoutTests/http/tests/devtools/console/console-format-es6.js

@@ -20,6 +20,9 @@
         var p = Promise.reject(-0);
         p.catch(function() {});
 
+        var p2 = Promise.resolve(1);
+        var p3 = new Promise(() => {});
+
         var smb1 = Symbol();
         var smb2 = Symbol("a");
         var obj = {
@@ -63,7 +66,7 @@
         var generator = genFunction();
 
         globals = [
-            p, smb1, smb2, obj, map, weakMap, set, weakSet,
+            p, p2, p3, smb1, smb2, obj, map, weakMap, set, weakSet,
             mapMap0, mapMap, setSet0, setSet, bigmap, generator
         ];
 

third_party/WebKit/LayoutTests/http/tests/devtools/console/console-format.html

@@ -81,13 +81,22 @@ function onload()
     var bigArray = [];
     bigArray.length = 200;
     bigArray.fill(1);
+    var boxedNumberWithProps = new Number(42);
+    boxedNumberWithProps[1] = "foo";
+    boxedNumberWithProps["a"] = "bar";
+    var boxedStringWithProps = new String("abc");
+    boxedStringWithProps["01"] = "foo";
+    boxedStringWithProps[3] = "foo";
+    boxedStringWithProps["a"] = "bar";
+
     globals = [
         regex1, regex2, str, str2, error, errorWithMessage, errorWithMultilineMessage, node, func, multilinefunc, 
         num, linkify, null, undefined, valuelessAttribute, valuedAttribute, existingAttribute, throwingLengthGetter,
         NaN, Number.POSITIVE_INFINITY, Number.NEGATIVE_INFINITY, array, {}, [function() {}], bar, svg,
         objectWithNonEnumerables, negZero, Object.create(null), Object, Object.prototype, arrayLikeFunction,
         new Number(42), new String("abc"), new Uint16Array([1, 2, 3]), textNode, domException(),
-        tinyTypedArray, smallTypedArray, bigTypedArray, instanceWithLongClassName, bigArray, singleArray
+        tinyTypedArray, smallTypedArray, bigTypedArray, instanceWithLongClassName, bigArray, singleArray,
+        boxedNumberWithProps, boxedStringWithProps
     ];
 
     runTest();

third_party/WebKit/LayoutTests/platform/linux/http/tests/devtools/console/console-format-expected.txt

@@ -102,6 +102,10 @@ CONSOLE MESSAGE: line 12: 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
 CONSOLE MESSAGE: line 13: 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1
 CONSOLE MESSAGE: line 12: test
 CONSOLE MESSAGE: line 13: test
+CONSOLE MESSAGE: line 12: 42.0000
+CONSOLE MESSAGE: line 13: 42.0000
+CONSOLE MESSAGE: line 12: abc
+CONSOLE MESSAGE: line 13: abc
 Tests that console logging dumps proper messages.
 
  console-format.html:22 Array(10)
@@ -259,14 +263,14 @@ console-format.html:8 [ƒ]
 globals[31]
 ƒ ( /**/ foo/**/, /*/**/bar,
     /**/baz) {}
-console-format.html:7 Number {[[PrimitiveValue]]: 42}
+console-format.html:7 Number {42}
 console-format.html:8 [Number]
 globals[32]
-Number {[[PrimitiveValue]]: 42}
-console-format.html:7 String {[[PrimitiveValue]]: "abc"}
+Number {42}
+console-format.html:7 String {"abc"}
 console-format.html:8 [String]
 globals[33]
-String {[[PrimitiveValue]]: "abc"}
+String {"abc"}
 console-format.html:7 Uint16Array(3) [1, 2, 3]
 console-format.html:8 [Uint16Array(3)]
 globals[34]
@@ -303,6 +307,14 @@ console-format.html:7 ["test"]
 console-format.html:8 [Array(1)]
 globals[42]
 ["test"]
+console-format.html:7 Number {42, 1: "foo", a: "bar"}
+console-format.html:8 [Number]
+globals[43]
+Number {42, 1: "foo", a: "bar"}
+console-format.html:7 String {"abc", 3: "foo", 01: "foo", a: "bar"}
+console-format.html:8 [String]
+globals[44]
+String {"abc", 3: "foo", 01: "foo", a: "bar"}
 Expanded all messages
 console-format.html:22 Array(10)
     0: "test"
@@ -650,18 +662,18 @@ console-format.html:8 [ƒ]
 globals[31]
 ƒ ( /**/ foo/**/, /*/**/bar,
     /**/baz) {}
-console-format.html:7 Number {[[PrimitiveValue]]: 42}
+console-format.html:7 Number {42}
     __proto__: Number
     [[PrimitiveValue]]: 42
 console-format.html:8 [Number]
-    0: Number {[[PrimitiveValue]]: 42}
+    0: Number {42}
     length: 1
     __proto__: Array(0)
 globals[32]
-Number {[[PrimitiveValue]]: 42}
+Number {42}
     __proto__: Number
     [[PrimitiveValue]]: 42
-console-format.html:7 String {[[PrimitiveValue]]: "abc"}
+console-format.html:7 String {"abc"}
     0: "a"
     1: "b"
     2: "c"
@@ -669,11 +681,11 @@ console-format.html:7 String {[[PrimitiveValue]]: "abc"}
     __proto__: String
     [[PrimitiveValue]]: "abc"
 console-format.html:8 [String]
-    0: String {[[PrimitiveValue]]: "abc"}
+    0: String {"abc"}
     length: 1
     __proto__: Array(0)
 globals[33]
-String {[[PrimitiveValue]]: "abc"}
+String {"abc"}
     0: "a"
     1: "b"
     2: "c"
@@ -813,4 +825,44 @@ globals[42]
     0: "test"
     length: 1
     __proto__: Array(0)
+console-format.html:7 Number {42, 1: "foo", a: "bar"}
+    1: "foo"
+    a: "bar"
+    __proto__: Number
+    [[PrimitiveValue]]: 42
+console-format.html:8 [Number]
+    0: Number {42, 1: "foo", a: "bar"}
+    length: 1
+    __proto__: Array(0)
+globals[43]
+Number {42, 1: "foo", a: "bar"}
+    1: "foo"
+    a: "bar"
+    __proto__: Number
+    [[PrimitiveValue]]: 42
+console-format.html:7 String {"abc", 3: "foo", 01: "foo", a: "bar"}
+    0: "a"
+    01: "foo"
+    1: "b"
+    2: "c"
+    3: "foo"
+    a: "bar"
+    length: 3
+    __proto__: String
+    [[PrimitiveValue]]: "abc"
+console-format.html:8 [String]
+    0: String {"abc", 3: "foo", 01: "foo", a: "bar"}
+    length: 1
+    __proto__: Array(0)
+globals[44]
+String {"abc", 3: "foo", 01: "foo", a: "bar"}
+    0: "a"
+    01: "foo"
+    1: "b"
+    2: "c"
+    3: "foo"
+    a: "bar"
+    length: 3
+    __proto__: String
+    [[PrimitiveValue]]: "abc"
 

third_party/WebKit/Source/devtools/front_end/object_ui/RemoteObjectPreviewFormatter.js

@@ -11,11 +11,24 @@ ObjectUI.RemoteObjectPreviewFormatter = class {
    * @return {number}
    */
   static _objectPropertyComparator(a, b) {
-    if (a.type !== 'function' && b.type === 'function')
-      return -1;
-    if (a.type === 'function' && b.type !== 'function')
+    return sortValue(a) - sortValue(b);
+
+    /**
+     * @param {!Protocol.Runtime.PropertyPreview} property
+     * @return {number}
+     */
+    function sortValue(property) {
+      var internalName = ObjectUI.RemoteObjectPreviewFormatter._internalName;
+      if (property.name === internalName.PromiseStatus)
         return 1;
-    return 0;
+      else if (property.name === internalName.PromiseValue)
+        return 2;
+      else if (property.name === internalName.GeneratorStatus || internalName.PrimitiveValue)
+        return 3;
+      else if (property.type !== 'function')
+        return 4;
+      return 5;
+    }
   }
 
   /**
@@ -79,6 +92,7 @@ ObjectUI.RemoteObjectPreviewFormatter = class {
    * @param {!Protocol.Runtime.ObjectPreview} preview
    */
   _appendObjectPropertiesPreview(parentElement, preview) {
+    var internalName = ObjectUI.RemoteObjectPreviewFormatter._internalName;
     var properties = preview.properties.filter(p => p.type !== 'accessor')
                          .stableSort(ObjectUI.RemoteObjectPreviewFormatter._objectPropertyComparator);
     for (var i = 0; i < properties.length; ++i) {
@@ -86,11 +100,29 @@ ObjectUI.RemoteObjectPreviewFormatter = class {
         parentElement.createTextChild(', ');
 
       var property = properties[i];
-      parentElement.appendChild(this._renderDisplayName(property.name));
+      var name = property.name;
+      // Internal properties are given special formatting, e.g. Promises `<rejected>: 123`.
+      if (preview.subtype === 'promise' && name === internalName.PromiseStatus) {
+        parentElement.appendChild(this._renderDisplayName('<' + property.value + '>'));
+        var nextProperty = i + 1 < properties.length ? properties[i + 1] : null;
+        if (nextProperty && nextProperty.name === internalName.PromiseValue) {
+          if (property.value !== 'pending') {
+            parentElement.createTextChild(': ');
+            parentElement.appendChild(this._renderPropertyPreviewOrAccessor([nextProperty]));
+          }
+          i++;
+        }
+      } else if (preview.subtype === 'generator' && name === internalName.GeneratorStatus) {
+        parentElement.appendChild(this._renderDisplayName('<' + property.value + '>'));
+      } else if (name === internalName.PrimitiveValue) {
+        parentElement.appendChild(this._renderPropertyPreviewOrAccessor([property]));
+      } else {
+        parentElement.appendChild(this._renderDisplayName(name));
         parentElement.createTextChild(': ');
         parentElement.appendChild(this._renderPropertyPreviewOrAccessor([property]));
       }
     }
+  }
 
   /**
    * @param {!Element} parentElement
@@ -255,3 +287,11 @@ ObjectUI.RemoteObjectPreviewFormatter = class {
     return span;
   }
 };
+
+/** @enum {string} */
+ObjectUI.RemoteObjectPreviewFormatter._internalName = {
+  GeneratorStatus: '[[GeneratorStatus]]',
+  PrimitiveValue: '[[PrimitiveValue]]',
+  PromiseStatus: '[[PromiseStatus]]',
+  PromiseValue: '[[PromiseValue]]'
+};