1 // Copyright 2014 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "src/execution/arguments-inl.h" 6 #include "src/execution/isolate-inl.h" 7 #include "src/heap/heap-inl.h" // For ToBoolean. TODO(jkummerow): Drop. 8 #include "src/logging/counters.h" 9 #include "src/objects/objects-inl.h" 10 #include "src/runtime/runtime-utils.h" 11 #include "src/strings/string-builder-inl.h" 12 13 namespace v8 { 14 namespace internal { 15 RUNTIME_FUNCTION(Runtime_CreatePrivateSymbol)16RUNTIME_FUNCTION(Runtime_CreatePrivateSymbol) { 17 HandleScope scope(isolate); 18 DCHECK_GE(1, args.length()); 19 Handle<Symbol> symbol = isolate->factory()->NewPrivateSymbol(); 20 if (args.length() == 1) { 21 Handle<Object> description = args.at(0); 22 CHECK(description->IsString() || description->IsUndefined(isolate)); 23 if (description->IsString()) 24 symbol->set_description(String::cast(*description)); 25 } 26 return *symbol; 27 } 28 RUNTIME_FUNCTION(Runtime_CreatePrivateBrandSymbol)29RUNTIME_FUNCTION(Runtime_CreatePrivateBrandSymbol) { 30 HandleScope scope(isolate); 31 DCHECK_EQ(1, args.length()); 32 Handle<String> name = args.at<String>(0); 33 Handle<Symbol> symbol = isolate->factory()->NewPrivateNameSymbol(name); 34 symbol->set_is_private_brand(); 35 return *symbol; 36 } 37 RUNTIME_FUNCTION(Runtime_CreatePrivateNameSymbol)38RUNTIME_FUNCTION(Runtime_CreatePrivateNameSymbol) { 39 HandleScope scope(isolate); 40 DCHECK_EQ(1, args.length()); 41 Handle<String> name = args.at<String>(0); 42 Handle<Symbol> symbol = isolate->factory()->NewPrivateNameSymbol(name); 43 return *symbol; 44 } 45 RUNTIME_FUNCTION(Runtime_SymbolDescriptiveString)46RUNTIME_FUNCTION(Runtime_SymbolDescriptiveString) { 47 HandleScope scope(isolate); 48 DCHECK_EQ(1, args.length()); 49 Handle<Symbol> symbol = args.at<Symbol>(0); 50 IncrementalStringBuilder builder(isolate); 51 builder.AppendCStringLiteral("Symbol("); 52 if (symbol->description().IsString()) { 53 builder.AppendString(handle(String::cast(symbol->description()), isolate)); 54 } 55 builder.AppendCharacter(')'); 56 RETURN_RESULT_OR_FAILURE(isolate, builder.Finish()); 57 } 58 59 RUNTIME_FUNCTION(Runtime_SymbolIsPrivate)60RUNTIME_FUNCTION(Runtime_SymbolIsPrivate) { 61 SealHandleScope shs(isolate); 62 DCHECK_EQ(1, args.length()); 63 auto symbol = Symbol::cast(args[0]); 64 return isolate->heap()->ToBoolean(symbol.is_private()); 65 } 66 } // namespace internal 67 } // namespace v8 68