tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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BuiltinObjectKind.cpp (4836B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
      2 * vim: set ts=8 sts=2 et sw=2 tw=80:
      3 * This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #include "vm/BuiltinObjectKind.h"
      8 
      9 #include "jspubtd.h"
     10 
     11 #include "frontend/ParserAtom.h"
     12 #include "vm/GlobalObject.h"
     13 
     14 using namespace js;
     15 
     16 static JSProtoKey ToProtoKey(BuiltinObjectKind kind) {
     17  switch (kind) {
     18    case BuiltinObjectKind::Array:
     19      return JSProto_Array;
     20    case BuiltinObjectKind::Map:
     21      return JSProto_Map;
     22    case BuiltinObjectKind::Promise:
     23      return JSProto_Promise;
     24    case BuiltinObjectKind::RegExp:
     25      return JSProto_RegExp;
     26    case BuiltinObjectKind::Set:
     27      return JSProto_Set;
     28    case BuiltinObjectKind::Symbol:
     29      return JSProto_Symbol;
     30 
     31    case BuiltinObjectKind::FunctionPrototype:
     32      return JSProto_Function;
     33    case BuiltinObjectKind::IteratorPrototype:
     34      return JSProto_Iterator;
     35 
     36    case BuiltinObjectKind::DateTimeFormatPrototype:
     37      return JSProto_DateTimeFormat;
     38    case BuiltinObjectKind::NumberFormatPrototype:
     39      return JSProto_NumberFormat;
     40 
     41    case BuiltinObjectKind::None:
     42      break;
     43  }
     44  MOZ_CRASH("Unexpected builtin object kind");
     45 }
     46 
     47 static bool IsPrototype(BuiltinObjectKind kind) {
     48  switch (kind) {
     49    case BuiltinObjectKind::Array:
     50    case BuiltinObjectKind::Map:
     51    case BuiltinObjectKind::Promise:
     52    case BuiltinObjectKind::RegExp:
     53    case BuiltinObjectKind::Set:
     54    case BuiltinObjectKind::Symbol:
     55      return false;
     56 
     57    case BuiltinObjectKind::FunctionPrototype:
     58    case BuiltinObjectKind::IteratorPrototype:
     59      return true;
     60 
     61    case BuiltinObjectKind::DateTimeFormatPrototype:
     62    case BuiltinObjectKind::NumberFormatPrototype:
     63      return true;
     64 
     65    case BuiltinObjectKind::None:
     66      break;
     67  }
     68  MOZ_CRASH("Unexpected builtin object kind");
     69 }
     70 
     71 BuiltinObjectKind js::BuiltinConstructorForName(
     72    frontend::TaggedParserAtomIndex name) {
     73  if (name == frontend::TaggedParserAtomIndex::WellKnown::Array()) {
     74    return BuiltinObjectKind::Array;
     75  }
     76  if (name == frontend::TaggedParserAtomIndex::WellKnown::Map()) {
     77    return BuiltinObjectKind::Map;
     78  }
     79  if (name == frontend::TaggedParserAtomIndex::WellKnown::Promise()) {
     80    return BuiltinObjectKind::Promise;
     81  }
     82  if (name == frontend::TaggedParserAtomIndex::WellKnown::RegExp()) {
     83    return BuiltinObjectKind::RegExp;
     84  }
     85  if (name == frontend::TaggedParserAtomIndex::WellKnown::Set()) {
     86    return BuiltinObjectKind::Set;
     87  }
     88  if (name == frontend::TaggedParserAtomIndex::WellKnown::Symbol()) {
     89    return BuiltinObjectKind::Symbol;
     90  }
     91  return BuiltinObjectKind::None;
     92 }
     93 
     94 BuiltinObjectKind js::BuiltinPrototypeForName(
     95    frontend::TaggedParserAtomIndex name) {
     96  if (name == frontend::TaggedParserAtomIndex::WellKnown::Function()) {
     97    return BuiltinObjectKind::FunctionPrototype;
     98  }
     99  if (name == frontend::TaggedParserAtomIndex::WellKnown::Iterator()) {
    100    return BuiltinObjectKind::IteratorPrototype;
    101  }
    102  if (name == frontend::TaggedParserAtomIndex::WellKnown::DateTimeFormat()) {
    103    return BuiltinObjectKind::DateTimeFormatPrototype;
    104  }
    105  if (name == frontend::TaggedParserAtomIndex::WellKnown::NumberFormat()) {
    106    return BuiltinObjectKind::NumberFormatPrototype;
    107  }
    108  return BuiltinObjectKind::None;
    109 }
    110 
    111 JSObject* js::MaybeGetBuiltinObject(GlobalObject* global,
    112                                    BuiltinObjectKind kind) {
    113  JSProtoKey key = ToProtoKey(kind);
    114  if (IsPrototype(kind)) {
    115    return global->maybeGetPrototype(key);
    116  }
    117  return global->maybeGetConstructor(key);
    118 }
    119 
    120 JSObject* js::GetOrCreateBuiltinObject(JSContext* cx, BuiltinObjectKind kind) {
    121  JSProtoKey key = ToProtoKey(kind);
    122  if (IsPrototype(kind)) {
    123    return GlobalObject::getOrCreatePrototype(cx, key);
    124  }
    125  return GlobalObject::getOrCreateConstructor(cx, key);
    126 }
    127 
    128 const char* js::BuiltinObjectName(BuiltinObjectKind kind) {
    129  switch (kind) {
    130    case BuiltinObjectKind::Array:
    131      return "Array";
    132    case BuiltinObjectKind::Map:
    133      return "Map";
    134    case BuiltinObjectKind::Promise:
    135      return "Promise";
    136    case BuiltinObjectKind::RegExp:
    137      return "RegExp";
    138    case BuiltinObjectKind::Set:
    139      return "Set";
    140    case BuiltinObjectKind::Symbol:
    141      return "Symbol";
    142 
    143    case BuiltinObjectKind::FunctionPrototype:
    144      return "Function.prototype";
    145    case BuiltinObjectKind::IteratorPrototype:
    146      return "Iterator.prototype";
    147 
    148    case BuiltinObjectKind::DateTimeFormatPrototype:
    149      return "DateTimeFormat.prototype";
    150    case BuiltinObjectKind::NumberFormatPrototype:
    151      return "NumberFormat.prototype";
    152 
    153    case BuiltinObjectKind::None:
    154      break;
    155  }
    156  MOZ_CRASH("Unexpected builtin object kind");
    157 }