113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch// Copyright 2016 the V8 project authors. All rights reserved. 213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch// Use of this source code is governed by a BSD-style license that can be 313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch// found in the LICENSE file. 413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch#include "src/json-stringifier.h" 613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch#include "src/conversions.h" 813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch#include "src/lookup.h" 913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch#include "src/messages.h" 1013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch#include "src/objects-inl.h" 1113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch#include "src/utils.h" 1213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 1313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdochnamespace v8 { 1413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdochnamespace internal { 1513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 1613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch// Translation table to escape Latin1 characters. 1713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch// Table entries start at a multiple of 8 and are null-terminated. 1813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdochconst char* const JsonStringifier::JsonEscapeTable = 1913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\\u0000\0 \\u0001\0 \\u0002\0 \\u0003\0 " 2013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\\u0004\0 \\u0005\0 \\u0006\0 \\u0007\0 " 2113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\\b\0 \\t\0 \\n\0 \\u000b\0 " 2213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\\f\0 \\r\0 \\u000e\0 \\u000f\0 " 2313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\\u0010\0 \\u0011\0 \\u0012\0 \\u0013\0 " 2413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\\u0014\0 \\u0015\0 \\u0016\0 \\u0017\0 " 2513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\\u0018\0 \\u0019\0 \\u001a\0 \\u001b\0 " 2613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\\u001c\0 \\u001d\0 \\u001e\0 \\u001f\0 " 2713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch " \0 !\0 \\\"\0 #\0 " 2813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "$\0 %\0 &\0 '\0 " 2913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "(\0 )\0 *\0 +\0 " 3013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch ",\0 -\0 .\0 /\0 " 3113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "0\0 1\0 2\0 3\0 " 3213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "4\0 5\0 6\0 7\0 " 3313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "8\0 9\0 :\0 ;\0 " 3413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "<\0 =\0 >\0 ?\0 " 3513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "@\0 A\0 B\0 C\0 " 3613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "D\0 E\0 F\0 G\0 " 3713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "H\0 I\0 J\0 K\0 " 3813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "L\0 M\0 N\0 O\0 " 3913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "P\0 Q\0 R\0 S\0 " 4013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "T\0 U\0 V\0 W\0 " 4113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "X\0 Y\0 Z\0 [\0 " 4213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\\\\\0 ]\0 ^\0 _\0 " 4313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "`\0 a\0 b\0 c\0 " 4413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "d\0 e\0 f\0 g\0 " 4513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "h\0 i\0 j\0 k\0 " 4613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "l\0 m\0 n\0 o\0 " 4713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "p\0 q\0 r\0 s\0 " 4813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "t\0 u\0 v\0 w\0 " 4913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "x\0 y\0 z\0 {\0 " 5013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "|\0 }\0 ~\0 \177\0 " 5113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\200\0 \201\0 \202\0 \203\0 " 5213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\204\0 \205\0 \206\0 \207\0 " 5313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\210\0 \211\0 \212\0 \213\0 " 5413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\214\0 \215\0 \216\0 \217\0 " 5513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\220\0 \221\0 \222\0 \223\0 " 5613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\224\0 \225\0 \226\0 \227\0 " 5713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\230\0 \231\0 \232\0 \233\0 " 5813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\234\0 \235\0 \236\0 \237\0 " 5913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\240\0 \241\0 \242\0 \243\0 " 6013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\244\0 \245\0 \246\0 \247\0 " 6113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\250\0 \251\0 \252\0 \253\0 " 6213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\254\0 \255\0 \256\0 \257\0 " 6313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\260\0 \261\0 \262\0 \263\0 " 6413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\264\0 \265\0 \266\0 \267\0 " 6513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\270\0 \271\0 \272\0 \273\0 " 6613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\274\0 \275\0 \276\0 \277\0 " 6713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\300\0 \301\0 \302\0 \303\0 " 6813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\304\0 \305\0 \306\0 \307\0 " 6913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\310\0 \311\0 \312\0 \313\0 " 7013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\314\0 \315\0 \316\0 \317\0 " 7113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\320\0 \321\0 \322\0 \323\0 " 7213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\324\0 \325\0 \326\0 \327\0 " 7313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\330\0 \331\0 \332\0 \333\0 " 7413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\334\0 \335\0 \336\0 \337\0 " 7513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\340\0 \341\0 \342\0 \343\0 " 7613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\344\0 \345\0 \346\0 \347\0 " 7713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\350\0 \351\0 \352\0 \353\0 " 7813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\354\0 \355\0 \356\0 \357\0 " 7913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\360\0 \361\0 \362\0 \363\0 " 8013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\364\0 \365\0 \366\0 \367\0 " 8113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\370\0 \371\0 \372\0 \373\0 " 8213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch "\374\0 \375\0 \376\0 \377\0 "; 8313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 8413e2dadd00298019ed862f2b2fc5068bba730bcfBen MurdochJsonStringifier::JsonStringifier(Isolate* isolate) 8513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch : isolate_(isolate), builder_(isolate), gap_(nullptr), indent_(0) { 8613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch tojson_string_ = factory()->toJSON_string(); 8713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch stack_ = factory()->NewJSArray(8); 8813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch} 8913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 9013e2dadd00298019ed862f2b2fc5068bba730bcfBen MurdochMaybeHandle<Object> JsonStringifier::Stringify(Handle<Object> object, 9113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<Object> replacer, 9213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<Object> gap) { 9313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (!InitializeReplacer(replacer)) return MaybeHandle<Object>(); 9413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (!gap->IsUndefined(isolate_) && !InitializeGap(gap)) { 9513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return MaybeHandle<Object>(); 9613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 9713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Result result = SerializeObject(object); 9813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (result == UNCHANGED) return factory()->undefined_value(); 9913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (result == SUCCESS) return builder_.Finish(); 10013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch DCHECK(result == EXCEPTION); 10113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return MaybeHandle<Object>(); 10213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch} 10313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 10413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdochbool IsInList(Handle<String> key, List<Handle<String> >* list) { 10513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch // TODO(yangguo): This is O(n^2) for n properties in the list. Deal with this 10613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch // if this becomes an issue. 10713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch for (const Handle<String>& existing : *list) { 10813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (String::Equals(existing, key)) return true; 10913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 11013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return false; 11113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch} 11213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 11313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdochbool JsonStringifier::InitializeReplacer(Handle<Object> replacer) { 11413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch DCHECK(property_list_.is_null()); 11513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch DCHECK(replacer_function_.is_null()); 11613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Maybe<bool> is_array = Object::IsArray(replacer); 11713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (is_array.IsNothing()) return false; 11813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (is_array.FromJust()) { 11913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch HandleScope handle_scope(isolate_); 12013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch List<Handle<String> > list; 12113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<Object> length_obj; 12213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch ASSIGN_RETURN_ON_EXCEPTION_VALUE( 12313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch isolate_, length_obj, 12413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Object::GetLengthFromArrayLike(isolate_, replacer), false); 12513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch uint32_t length; 12613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (!length_obj->ToUint32(&length)) length = kMaxUInt32; 12713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch for (uint32_t i = 0; i < length; i++) { 12813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<Object> element; 12913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<String> key; 13013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch ASSIGN_RETURN_ON_EXCEPTION_VALUE( 13113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch isolate_, element, Object::GetElement(isolate_, replacer, i), false); 13213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (element->IsNumber() || element->IsString()) { 13313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch ASSIGN_RETURN_ON_EXCEPTION_VALUE( 13413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch isolate_, key, Object::ToString(isolate_, element), false); 13513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } else if (element->IsJSValue()) { 13613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<Object> value(Handle<JSValue>::cast(element)->value(), isolate_); 13713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (value->IsNumber() || value->IsString()) { 13813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch ASSIGN_RETURN_ON_EXCEPTION_VALUE( 13913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch isolate_, key, Object::ToString(isolate_, element), false); 14013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 14113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 14213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (key.is_null()) continue; 14313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (!IsInList(key, &list)) list.Add(key); 14413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 14513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch property_list_ = factory()->NewUninitializedFixedArray(list.length()); 14613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch for (int i = 0; i < list.length(); i++) { 14713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch property_list_->set(i, *list[i]); 14813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 14913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch property_list_ = handle_scope.CloseAndEscape(property_list_); 15013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } else if (replacer->IsCallable()) { 15113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch replacer_function_ = Handle<JSReceiver>::cast(replacer); 15213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 15313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return true; 15413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch} 15513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 15613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdochbool JsonStringifier::InitializeGap(Handle<Object> gap) { 15713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch DCHECK_NULL(gap_); 15813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch HandleScope scope(isolate_); 15913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (gap->IsJSValue()) { 16013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<Object> value(Handle<JSValue>::cast(gap)->value(), isolate_); 16113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (value->IsString()) { 16213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch ASSIGN_RETURN_ON_EXCEPTION_VALUE(isolate_, gap, 16313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Object::ToString(isolate_, gap), false); 16413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } else if (value->IsNumber()) { 16513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch ASSIGN_RETURN_ON_EXCEPTION_VALUE(isolate_, gap, Object::ToNumber(gap), 16613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch false); 16713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 16813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 16913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 17013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (gap->IsString()) { 17113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<String> gap_string = Handle<String>::cast(gap); 17213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (gap_string->length() > 0) { 17313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch int gap_length = std::min(gap_string->length(), 10); 17413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch gap_ = NewArray<uc16>(gap_length + 1); 17513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch String::WriteToFlat(*gap_string, gap_, 0, gap_length); 17613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch for (int i = 0; i < gap_length; i++) { 17713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (gap_[i] > String::kMaxOneByteCharCode) { 17813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch builder_.ChangeEncoding(); 17913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch break; 18013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 18113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 18213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch gap_[gap_length] = '\0'; 18313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 18413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } else if (gap->IsNumber()) { 18513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch int num_value = DoubleToInt32(gap->Number()); 18613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (num_value > 0) { 18713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch int gap_length = std::min(num_value, 10); 18813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch gap_ = NewArray<uc16>(gap_length + 1); 18913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch for (int i = 0; i < gap_length; i++) gap_[i] = ' '; 19013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch gap_[gap_length] = '\0'; 19113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 19213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 19313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return true; 19413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch} 19513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 19613e2dadd00298019ed862f2b2fc5068bba730bcfBen MurdochMaybeHandle<Object> JsonStringifier::ApplyToJsonFunction(Handle<Object> object, 19713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<Object> key) { 19813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch HandleScope scope(isolate_); 19913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch LookupIterator it(object, tojson_string_, 20013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch LookupIterator::PROTOTYPE_CHAIN_SKIP_INTERCEPTOR); 20113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<Object> fun; 20213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch ASSIGN_RETURN_ON_EXCEPTION(isolate_, fun, Object::GetProperty(&it), Object); 20313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (!fun->IsCallable()) return object; 20413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 20513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch // Call toJSON function. 20613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (key->IsSmi()) key = factory()->NumberToString(key); 20713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<Object> argv[] = {key}; 20813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch ASSIGN_RETURN_ON_EXCEPTION(isolate_, object, 20913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Execution::Call(isolate_, fun, object, 1, argv), 21013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Object); 21113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return scope.CloseAndEscape(object); 21213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch} 21313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 21413e2dadd00298019ed862f2b2fc5068bba730bcfBen MurdochMaybeHandle<Object> JsonStringifier::ApplyReplacerFunction( 21513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<Object> value, Handle<Object> key, Handle<Object> initial_holder) { 21613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch HandleScope scope(isolate_); 21713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (key->IsSmi()) key = factory()->NumberToString(key); 21813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<Object> argv[] = {key, value}; 21913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<JSReceiver> holder = CurrentHolder(value, initial_holder); 22013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch ASSIGN_RETURN_ON_EXCEPTION( 22113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch isolate_, value, 22213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Execution::Call(isolate_, replacer_function_, holder, 2, argv), Object); 22313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return scope.CloseAndEscape(value); 22413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch} 22513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 22613e2dadd00298019ed862f2b2fc5068bba730bcfBen MurdochHandle<JSReceiver> JsonStringifier::CurrentHolder( 22713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<Object> value, Handle<Object> initial_holder) { 22813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch int length = Smi::cast(stack_->length())->value(); 22913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (length == 0) { 23013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<JSObject> holder = 23113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch factory()->NewJSObject(isolate_->object_function()); 23213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch JSObject::AddProperty(holder, factory()->empty_string(), initial_holder, 23313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch NONE); 23413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return holder; 23513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } else { 23613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch FixedArray* elements = FixedArray::cast(stack_->elements()); 23713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return Handle<JSReceiver>(JSReceiver::cast(elements->get(length - 1)), 23813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch isolate_); 23913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 24013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch} 24113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 24213e2dadd00298019ed862f2b2fc5068bba730bcfBen MurdochJsonStringifier::Result JsonStringifier::StackPush(Handle<Object> object) { 24313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch StackLimitCheck check(isolate_); 24413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (check.HasOverflowed()) { 24513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch isolate_->StackOverflow(); 24613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return EXCEPTION; 24713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 24813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 24913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch int length = Smi::cast(stack_->length())->value(); 25013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch { 25113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch DisallowHeapAllocation no_allocation; 25213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch FixedArray* elements = FixedArray::cast(stack_->elements()); 25313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch for (int i = 0; i < length; i++) { 25413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (elements->get(i) == *object) { 25513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch AllowHeapAllocation allow_to_return_error; 25613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<Object> error = 25713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch factory()->NewTypeError(MessageTemplate::kCircularStructure); 25813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch isolate_->Throw(*error); 25913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return EXCEPTION; 26013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 26113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 26213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 26313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch JSArray::SetLength(stack_, length + 1); 26413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch FixedArray::cast(stack_->elements())->set(length, *object); 26513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return SUCCESS; 26613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch} 26713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 26813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdochvoid JsonStringifier::StackPop() { 26913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch int length = Smi::cast(stack_->length())->value(); 27013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch stack_->set_length(Smi::FromInt(length - 1)); 27113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch} 27213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 27313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdochtemplate <bool deferred_string_key> 27413e2dadd00298019ed862f2b2fc5068bba730bcfBen MurdochJsonStringifier::Result JsonStringifier::Serialize_(Handle<Object> object, 27513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch bool comma, 27613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<Object> key) { 27713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch StackLimitCheck interrupt_check(isolate_); 27813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<Object> initial_value = object; 27913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (interrupt_check.InterruptRequested() && 28013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch isolate_->stack_guard()->HandleInterrupts()->IsException(isolate_)) { 28113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return EXCEPTION; 28213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 28313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (object->IsJSReceiver()) { 28413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch ASSIGN_RETURN_ON_EXCEPTION_VALUE( 28513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch isolate_, object, ApplyToJsonFunction(object, key), EXCEPTION); 28613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 28713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (!replacer_function_.is_null()) { 28813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch ASSIGN_RETURN_ON_EXCEPTION_VALUE( 28913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch isolate_, object, ApplyReplacerFunction(object, key, initial_value), 29013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch EXCEPTION); 29113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 29213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 29313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (object->IsSmi()) { 29413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (deferred_string_key) SerializeDeferredKey(comma, key); 29513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return SerializeSmi(Smi::cast(*object)); 29613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 29713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 29813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch switch (HeapObject::cast(*object)->map()->instance_type()) { 29913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch case HEAP_NUMBER_TYPE: 30013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch case MUTABLE_HEAP_NUMBER_TYPE: 30113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (deferred_string_key) SerializeDeferredKey(comma, key); 30213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return SerializeHeapNumber(Handle<HeapNumber>::cast(object)); 30313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch case ODDBALL_TYPE: 30413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch switch (Oddball::cast(*object)->kind()) { 30513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch case Oddball::kFalse: 30613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (deferred_string_key) SerializeDeferredKey(comma, key); 30713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch builder_.AppendCString("false"); 30813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return SUCCESS; 30913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch case Oddball::kTrue: 31013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (deferred_string_key) SerializeDeferredKey(comma, key); 31113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch builder_.AppendCString("true"); 31213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return SUCCESS; 31313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch case Oddball::kNull: 31413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (deferred_string_key) SerializeDeferredKey(comma, key); 31513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch builder_.AppendCString("null"); 31613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return SUCCESS; 31713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch default: 31813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return UNCHANGED; 31913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 32013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch case JS_ARRAY_TYPE: 32113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (deferred_string_key) SerializeDeferredKey(comma, key); 32213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return SerializeJSArray(Handle<JSArray>::cast(object)); 32313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch case JS_VALUE_TYPE: 32413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (deferred_string_key) SerializeDeferredKey(comma, key); 32513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return SerializeJSValue(Handle<JSValue>::cast(object)); 32613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch case SIMD128_VALUE_TYPE: 32713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch case SYMBOL_TYPE: 32813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return UNCHANGED; 32913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch default: 33013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (object->IsString()) { 33113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (deferred_string_key) SerializeDeferredKey(comma, key); 33213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch SerializeString(Handle<String>::cast(object)); 33313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return SUCCESS; 33413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } else { 33513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch DCHECK(object->IsJSReceiver()); 33613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (object->IsCallable()) return UNCHANGED; 33713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch // Go to slow path for global proxy and objects requiring access checks. 33813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (deferred_string_key) SerializeDeferredKey(comma, key); 33913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (object->IsJSProxy()) { 34013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return SerializeJSProxy(Handle<JSProxy>::cast(object)); 34113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 34213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return SerializeJSObject(Handle<JSObject>::cast(object)); 34313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 34413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 34513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 34613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch UNREACHABLE(); 34713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return UNCHANGED; 34813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch} 34913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 35013e2dadd00298019ed862f2b2fc5068bba730bcfBen MurdochJsonStringifier::Result JsonStringifier::SerializeJSValue( 35113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<JSValue> object) { 35213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch String* class_name = object->class_name(); 35313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (class_name == isolate_->heap()->String_string()) { 35413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<Object> value; 35513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch ASSIGN_RETURN_ON_EXCEPTION_VALUE( 35613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch isolate_, value, Object::ToString(isolate_, object), EXCEPTION); 35713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch SerializeString(Handle<String>::cast(value)); 35813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } else if (class_name == isolate_->heap()->Number_string()) { 35913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<Object> value; 36013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch ASSIGN_RETURN_ON_EXCEPTION_VALUE(isolate_, value, Object::ToNumber(object), 36113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch EXCEPTION); 36213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (value->IsSmi()) return SerializeSmi(Smi::cast(*value)); 36313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch SerializeHeapNumber(Handle<HeapNumber>::cast(value)); 36413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } else if (class_name == isolate_->heap()->Boolean_string()) { 36513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Object* value = JSValue::cast(*object)->value(); 36613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch DCHECK(value->IsBoolean()); 36713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch builder_.AppendCString(value->IsTrue(isolate_) ? "true" : "false"); 36813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } else { 36913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch // ES6 24.3.2.1 step 10.c, serialize as an ordinary JSObject. 37013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return SerializeJSObject(object); 37113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 37213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return SUCCESS; 37313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch} 37413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 37513e2dadd00298019ed862f2b2fc5068bba730bcfBen MurdochJsonStringifier::Result JsonStringifier::SerializeSmi(Smi* object) { 37613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch static const int kBufferSize = 100; 37713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch char chars[kBufferSize]; 37813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Vector<char> buffer(chars, kBufferSize); 37913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch builder_.AppendCString(IntToCString(object->value(), buffer)); 38013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return SUCCESS; 38113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch} 38213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 38313e2dadd00298019ed862f2b2fc5068bba730bcfBen MurdochJsonStringifier::Result JsonStringifier::SerializeDouble(double number) { 38413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (std::isinf(number) || std::isnan(number)) { 38513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch builder_.AppendCString("null"); 38613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return SUCCESS; 38713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 38813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch static const int kBufferSize = 100; 38913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch char chars[kBufferSize]; 39013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Vector<char> buffer(chars, kBufferSize); 39113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch builder_.AppendCString(DoubleToCString(number, buffer)); 39213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return SUCCESS; 39313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch} 39413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 39513e2dadd00298019ed862f2b2fc5068bba730bcfBen MurdochJsonStringifier::Result JsonStringifier::SerializeJSArray( 39613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<JSArray> object) { 39713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch HandleScope handle_scope(isolate_); 39813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Result stack_push = StackPush(object); 39913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (stack_push != SUCCESS) return stack_push; 40013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch uint32_t length = 0; 40113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch CHECK(object->length()->ToArrayLength(&length)); 40213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch DCHECK(!object->IsAccessCheckNeeded()); 40313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch builder_.AppendCharacter('['); 40413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Indent(); 40513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch uint32_t i = 0; 40613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (replacer_function_.is_null()) { 40713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch switch (object->GetElementsKind()) { 40813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch case FAST_SMI_ELEMENTS: { 40913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<FixedArray> elements(FixedArray::cast(object->elements()), 41013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch isolate_); 41113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch StackLimitCheck interrupt_check(isolate_); 41213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch while (i < length) { 41313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (interrupt_check.InterruptRequested() && 41413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch isolate_->stack_guard()->HandleInterrupts()->IsException( 41513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch isolate_)) { 41613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return EXCEPTION; 41713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 41813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Separator(i == 0); 41913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch SerializeSmi(Smi::cast(elements->get(i))); 42013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch i++; 42113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 42213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch break; 42313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 42413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch case FAST_DOUBLE_ELEMENTS: { 42513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch // Empty array is FixedArray but not FixedDoubleArray. 42613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (length == 0) break; 42713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<FixedDoubleArray> elements( 42813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch FixedDoubleArray::cast(object->elements()), isolate_); 42913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch StackLimitCheck interrupt_check(isolate_); 43013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch while (i < length) { 43113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (interrupt_check.InterruptRequested() && 43213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch isolate_->stack_guard()->HandleInterrupts()->IsException( 43313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch isolate_)) { 43413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return EXCEPTION; 43513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 43613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Separator(i == 0); 43713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch SerializeDouble(elements->get_scalar(i)); 43813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch i++; 43913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 44013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch break; 44113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 44213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch case FAST_ELEMENTS: { 44313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<Object> old_length(object->length(), isolate_); 44413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch while (i < length) { 44513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (object->length() != *old_length || 44613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch object->GetElementsKind() != FAST_ELEMENTS) { 44713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch // Fall back to slow path. 44813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch break; 44913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 45013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Separator(i == 0); 45113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Result result = SerializeElement( 45213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch isolate_, 45313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<Object>(FixedArray::cast(object->elements())->get(i), 45413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch isolate_), 45513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch i); 45613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (result == UNCHANGED) { 45713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch builder_.AppendCString("null"); 45813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } else if (result != SUCCESS) { 45913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return result; 46013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 46113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch i++; 46213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 46313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch break; 46413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 46513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch // The FAST_HOLEY_* cases could be handled in a faster way. They resemble 46613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch // the non-holey cases except that a lookup is necessary for holes. 46713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch default: 46813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch break; 46913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 47013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 47113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (i < length) { 47213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch // Slow path for non-fast elements and fall-back in edge case. 47313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Result result = SerializeArrayLikeSlow(object, i, length); 47413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (result != SUCCESS) return result; 47513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 47613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Unindent(); 47713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (length > 0) NewLine(); 47813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch builder_.AppendCharacter(']'); 47913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch StackPop(); 48013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return SUCCESS; 48113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch} 48213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 48313e2dadd00298019ed862f2b2fc5068bba730bcfBen MurdochJsonStringifier::Result JsonStringifier::SerializeArrayLikeSlow( 48413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<JSReceiver> object, uint32_t start, uint32_t length) { 48513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch // We need to write out at least two characters per array element. 48613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch static const int kMaxSerializableArrayLength = String::kMaxLength / 2; 48713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (length > kMaxSerializableArrayLength) { 48813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch isolate_->Throw(*isolate_->factory()->NewInvalidStringLengthError()); 48913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return EXCEPTION; 49013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 49113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch for (uint32_t i = start; i < length; i++) { 49213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Separator(i == 0); 49313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<Object> element; 49413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch ASSIGN_RETURN_ON_EXCEPTION_VALUE( 49513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch isolate_, element, JSReceiver::GetElement(isolate_, object, i), 49613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch EXCEPTION); 49713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Result result = SerializeElement(isolate_, element, i); 49813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (result == SUCCESS) continue; 49913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (result == UNCHANGED) { 50013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch // Detect overflow sooner for large sparse arrays. 50113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (builder_.HasOverflowed()) return EXCEPTION; 50213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch builder_.AppendCString("null"); 50313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } else { 50413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return result; 50513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 50613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 50713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return SUCCESS; 50813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch} 50913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 51013e2dadd00298019ed862f2b2fc5068bba730bcfBen MurdochJsonStringifier::Result JsonStringifier::SerializeJSObject( 51113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<JSObject> object) { 51213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch HandleScope handle_scope(isolate_); 51313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Result stack_push = StackPush(object); 51413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (stack_push != SUCCESS) return stack_push; 51513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 51613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (property_list_.is_null() && 51713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch object->map()->instance_type() > LAST_CUSTOM_ELEMENTS_RECEIVER && 51813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch object->HasFastProperties() && 51913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<JSObject>::cast(object)->elements()->length() == 0) { 52013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch DCHECK(object->IsJSObject()); 52113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch DCHECK(!object->IsJSGlobalProxy()); 52213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<JSObject> js_obj = Handle<JSObject>::cast(object); 52313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch DCHECK(!js_obj->HasIndexedInterceptor()); 52413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch DCHECK(!js_obj->HasNamedInterceptor()); 52513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<Map> map(js_obj->map()); 52613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch builder_.AppendCharacter('{'); 52713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Indent(); 52813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch bool comma = false; 52913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch for (int i = 0; i < map->NumberOfOwnDescriptors(); i++) { 53013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<Name> name(map->instance_descriptors()->GetKey(i), isolate_); 53113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch // TODO(rossberg): Should this throw? 53213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (!name->IsString()) continue; 53313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<String> key = Handle<String>::cast(name); 53413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch PropertyDetails details = map->instance_descriptors()->GetDetails(i); 53513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (details.IsDontEnum()) continue; 53613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<Object> property; 53713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (details.type() == DATA && *map == js_obj->map()) { 53813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch FieldIndex field_index = FieldIndex::ForDescriptor(*map, i); 53913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch property = JSObject::FastPropertyAt(js_obj, details.representation(), 54013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch field_index); 54113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } else { 54213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch ASSIGN_RETURN_ON_EXCEPTION_VALUE( 54313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch isolate_, property, Object::GetPropertyOrElement(js_obj, key), 54413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch EXCEPTION); 54513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 54613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Result result = SerializeProperty(property, comma, key); 54713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (!comma && result == SUCCESS) comma = true; 54813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (result == EXCEPTION) return result; 54913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 55013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Unindent(); 55113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (comma) NewLine(); 55213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch builder_.AppendCharacter('}'); 55313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } else { 55413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Result result = SerializeJSReceiverSlow(object); 55513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (result != SUCCESS) return result; 55613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 55713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch StackPop(); 55813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return SUCCESS; 55913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch} 56013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 56113e2dadd00298019ed862f2b2fc5068bba730bcfBen MurdochJsonStringifier::Result JsonStringifier::SerializeJSReceiverSlow( 56213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<JSReceiver> object) { 56313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<FixedArray> contents = property_list_; 56413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (contents.is_null()) { 56513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch ASSIGN_RETURN_ON_EXCEPTION_VALUE( 56613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch isolate_, contents, 56713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch KeyAccumulator::GetKeys(object, KeyCollectionMode::kOwnOnly, 56813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch ENUMERABLE_STRINGS, 56913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch GetKeysConversion::kConvertToString), 57013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch EXCEPTION); 57113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 57213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch builder_.AppendCharacter('{'); 57313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Indent(); 57413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch bool comma = false; 57513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch for (int i = 0; i < contents->length(); i++) { 57613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<String> key(String::cast(contents->get(i)), isolate_); 57713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<Object> property; 57813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch ASSIGN_RETURN_ON_EXCEPTION_VALUE(isolate_, property, 57913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Object::GetPropertyOrElement(object, key), 58013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch EXCEPTION); 58113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Result result = SerializeProperty(property, comma, key); 58213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (!comma && result == SUCCESS) comma = true; 58313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (result == EXCEPTION) return result; 58413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 58513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Unindent(); 58613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (comma) NewLine(); 58713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch builder_.AppendCharacter('}'); 58813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return SUCCESS; 58913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch} 59013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 59113e2dadd00298019ed862f2b2fc5068bba730bcfBen MurdochJsonStringifier::Result JsonStringifier::SerializeJSProxy( 59213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<JSProxy> object) { 59313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch HandleScope scope(isolate_); 59413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Result stack_push = StackPush(object); 59513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (stack_push != SUCCESS) return stack_push; 59613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Maybe<bool> is_array = Object::IsArray(object); 59713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (is_array.IsNothing()) return EXCEPTION; 59813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (is_array.FromJust()) { 59913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<Object> length_object; 60013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch ASSIGN_RETURN_ON_EXCEPTION_VALUE( 60113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch isolate_, length_object, 60213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Object::GetLengthFromArrayLike(isolate_, object), EXCEPTION); 60313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch uint32_t length; 60413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (!length_object->ToUint32(&length)) { 60513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch // Technically, we need to be able to handle lengths outside the 60613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch // uint32_t range. However, we would run into string size overflow 60713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch // if we tried to stringify such an array. 60813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch isolate_->Throw(*isolate_->factory()->NewInvalidStringLengthError()); 60913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return EXCEPTION; 61013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 61113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch builder_.AppendCharacter('['); 61213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Indent(); 61313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Result result = SerializeArrayLikeSlow(object, 0, length); 61413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (result != SUCCESS) return result; 61513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Unindent(); 61613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (length > 0) NewLine(); 61713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch builder_.AppendCharacter(']'); 61813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } else { 61913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Result result = SerializeJSReceiverSlow(object); 62013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (result != SUCCESS) return result; 62113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 62213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch StackPop(); 62313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return SUCCESS; 62413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch} 62513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 62613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdochtemplate <typename SrcChar, typename DestChar> 62713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdochvoid JsonStringifier::SerializeStringUnchecked_( 62813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Vector<const SrcChar> src, 62913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch IncrementalStringBuilder::NoExtend<DestChar>* dest) { 63013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch // Assert that uc16 character is not truncated down to 8 bit. 63113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch // The <uc16, char> version of this method must not be called. 63213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch DCHECK(sizeof(DestChar) >= sizeof(SrcChar)); 63313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 63413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch for (int i = 0; i < src.length(); i++) { 63513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch SrcChar c = src[i]; 63613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (DoNotEscape(c)) { 63713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch dest->Append(c); 63813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } else { 63913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch dest->AppendCString(&JsonEscapeTable[c * kJsonEscapeTableEntrySize]); 64013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 64113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 64213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch} 64313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 64413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdochtemplate <typename SrcChar, typename DestChar> 64513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdochvoid JsonStringifier::SerializeString_(Handle<String> string) { 64613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch int length = string->length(); 64713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch builder_.Append<uint8_t, DestChar>('"'); 64813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch // We make a rough estimate to find out if the current string can be 64913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch // serialized without allocating a new string part. The worst case length of 65013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch // an escaped character is 6. Shifting the remainin string length right by 3 65113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch // is a more pessimistic estimate, but faster to calculate. 65213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch int worst_case_length = length << 3; 65313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (builder_.CurrentPartCanFit(worst_case_length)) { 65413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch DisallowHeapAllocation no_gc; 65513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Vector<const SrcChar> vector = string->GetCharVector<SrcChar>(); 65613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch IncrementalStringBuilder::NoExtendBuilder<DestChar> no_extend( 65713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch &builder_, worst_case_length); 65813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch SerializeStringUnchecked_(vector, &no_extend); 65913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } else { 66013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch FlatStringReader reader(isolate_, string); 66113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch for (int i = 0; i < reader.length(); i++) { 66213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch SrcChar c = reader.Get<SrcChar>(i); 66313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (DoNotEscape(c)) { 66413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch builder_.Append<SrcChar, DestChar>(c); 66513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } else { 66613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch builder_.AppendCString(&JsonEscapeTable[c * kJsonEscapeTableEntrySize]); 66713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 66813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 66913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 67013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 67113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch builder_.Append<uint8_t, DestChar>('"'); 67213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch} 67313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 67413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdochtemplate <> 67513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdochbool JsonStringifier::DoNotEscape(uint8_t c) { 67613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return c >= '#' && c <= '~' && c != '\\'; 67713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch} 67813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 67913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdochtemplate <> 68013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdochbool JsonStringifier::DoNotEscape(uint16_t c) { 68113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch return c >= '#' && c != '\\' && c != 0x7f; 68213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch} 68313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 68413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdochvoid JsonStringifier::NewLine() { 68513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (gap_ == nullptr) return; 68613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch builder_.AppendCharacter('\n'); 68713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch for (int i = 0; i < indent_; i++) builder_.AppendCString(gap_); 68813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch} 68913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 69013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdochvoid JsonStringifier::Separator(bool first) { 69113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (!first) builder_.AppendCharacter(','); 69213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch NewLine(); 69313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch} 69413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 69513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdochvoid JsonStringifier::SerializeDeferredKey(bool deferred_comma, 69613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Handle<Object> deferred_key) { 69713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch Separator(!deferred_comma); 69813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch SerializeString(Handle<String>::cast(deferred_key)); 69913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch builder_.AppendCharacter(':'); 70013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (gap_ != nullptr) builder_.AppendCharacter(' '); 70113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch} 70213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 70313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdochvoid JsonStringifier::SerializeString(Handle<String> object) { 70413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch object = String::Flatten(object); 70513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (builder_.CurrentEncoding() == String::ONE_BYTE_ENCODING) { 70613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (object->IsOneByteRepresentationUnderneath()) { 70713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch SerializeString_<uint8_t, uint8_t>(object); 70813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } else { 70913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch builder_.ChangeEncoding(); 71013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch SerializeString(object); 71113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 71213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } else { 71313e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch if (object->IsOneByteRepresentationUnderneath()) { 71413e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch SerializeString_<uint8_t, uc16>(object); 71513e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } else { 71613e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch SerializeString_<uc16, uc16>(object); 71713e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 71813e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch } 71913e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch} 72013e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch 72113e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch} // namespace internal 72213e2dadd00298019ed862f2b2fc5068bba730bcfBen Murdoch} // namespace v8 723