runtime-symbol.cc revision 13e2dadd00298019ed862f2b2fc5068bba730bcf 
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/runtime/runtime-utils.h"
6
7#include "src/arguments.h"
8#include "src/isolate-inl.h"
9#include "src/objects-inl.h"
10#include "src/string-builder.h"
11
12namespace v8 {
13namespace internal {
14
15RUNTIME_FUNCTION(Runtime_CreateSymbol) {
16  HandleScope scope(isolate);
17  DCHECK(args.length() == 1);
18  CONVERT_ARG_HANDLE_CHECKED(Object, name, 0);
19  CHECK(name->IsString() || name->IsUndefined(isolate));
20  Handle<Symbol> symbol = isolate->factory()->NewSymbol();
21  if (name->IsString()) symbol->set_name(*name);
22  return *symbol;
23}
24
25
26RUNTIME_FUNCTION(Runtime_CreatePrivateSymbol) {
27  HandleScope scope(isolate);
28  DCHECK(args.length() == 1);
29  CONVERT_ARG_HANDLE_CHECKED(Object, name, 0);
30  CHECK(name->IsString() || name->IsUndefined(isolate));
31  Handle<Symbol> symbol = isolate->factory()->NewPrivateSymbol();
32  if (name->IsString()) symbol->set_name(*name);
33  return *symbol;
34}
35
36
37RUNTIME_FUNCTION(Runtime_SymbolDescription) {
38  SealHandleScope shs(isolate);
39  DCHECK(args.length() == 1);
40  CONVERT_ARG_CHECKED(Symbol, symbol, 0);
41  return symbol->name();
42}
43
44
45RUNTIME_FUNCTION(Runtime_SymbolDescriptiveString) {
46  HandleScope scope(isolate);
47  DCHECK_EQ(1, args.length());
48  CONVERT_ARG_HANDLE_CHECKED(Symbol, symbol, 0);
49  IncrementalStringBuilder builder(isolate);
50  builder.AppendCString("Symbol(");
51  if (symbol->name()->IsString()) {
52    builder.AppendString(handle(String::cast(symbol->name()), isolate));
53  }
54  builder.AppendCharacter(')');
55  RETURN_RESULT_OR_FAILURE(isolate, builder.Finish());
56}
57
58
59RUNTIME_FUNCTION(Runtime_SymbolRegistry) {
60  HandleScope scope(isolate);
61  DCHECK(args.length() == 0);
62  return *isolate->GetSymbolRegistry();
63}
64
65
66RUNTIME_FUNCTION(Runtime_SymbolIsPrivate) {
67  SealHandleScope shs(isolate);
68  DCHECK(args.length() == 1);
69  CONVERT_ARG_CHECKED(Symbol, symbol, 0);
70  return isolate->heap()->ToBoolean(symbol->is_private());
71}
72}  // namespace internal
73}  // namespace v8
74