[printing] Add custom Brief printing for Structs

Change-Id: Ic9dffa7f94b471824f18170c72df8568dd47cfcd
Reviewed-on: https://chromium-review.googlesource.com/631959Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47578}

src/objects.cc

@@ -3330,11 +3330,13 @@ void HeapObject::HeapObjectShortPrint(std::ostream& os) {  // NOLINT
     case JS_MESSAGE_OBJECT_TYPE:
       os << "<JSMessageObject>";
       break;
-#define MAKE_STRUCT_CASE(NAME, Name, name) \
-  case NAME##_TYPE:                        \
-    os << "<" #Name ">";                   \
+#define MAKE_STRUCT_CASE(NAME, Name, name)   \
+  case NAME##_TYPE:                          \
+    os << "<" #Name;                         \
+    Name::cast(this)->BriefPrintDetails(os); \
+    os << ">";                               \
     break;
-  STRUCT_LIST(MAKE_STRUCT_CASE)
+      STRUCT_LIST(MAKE_STRUCT_CASE)
 #undef MAKE_STRUCT_CASE
     case CODE_TYPE: {
       Code* code = Code::cast(this);
@@ -3418,6 +3420,16 @@ void HeapObject::HeapObjectShortPrint(std::ostream& os) {  // NOLINT
   }
 }
 
+void Struct::BriefPrintDetails(std::ostream& os) {}
+
+void Tuple2::BriefPrintDetails(std::ostream& os) {
+  os << " " << Brief(value1()) << ", " << Brief(value2());
+}
+
+void Tuple3::BriefPrintDetails(std::ostream& os) {
+  os << " " << Brief(value1()) << ", " << Brief(value2()) << ", "
+     << Brief(value3());
+}
 
 void HeapObject::Iterate(ObjectVisitor* v) { IterateFast<ObjectVisitor>(v); }
 

src/objects.h

@@ -4326,6 +4326,7 @@ class Struct: public HeapObject {
  public:
   inline void InitializeBody(int object_size);
   DECL_CAST(Struct)
+  void BriefPrintDetails(std::ostream& os);
 };
 
 // A container struct to hold state required for PromiseResolveThenableJob.
@@ -4479,6 +4480,7 @@ class Tuple2 : public Struct {
   // Dispatched behavior.
   DECL_PRINTER(Tuple2)
   DECL_VERIFIER(Tuple2)
+  void BriefPrintDetails(std::ostream& os);
 
   static const int kValue1Offset = HeapObject::kHeaderSize;
   static const int kValue2Offset = kValue1Offset + kPointerSize;
@@ -4497,6 +4499,7 @@ class Tuple3 : public Tuple2 {
   // Dispatched behavior.
   DECL_PRINTER(Tuple3)
   DECL_VERIFIER(Tuple3)
+  void BriefPrintDetails(std::ostream& os);
 
   static const int kValue3Offset = Tuple2::kSize;
   static const int kSize = kValue3Offset + kPointerSize;