tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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Id.cpp (3250B)

      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 "js/Id.h"
      8 #include "js/Printer.h"  // js::GenericPrinter, js::Fprinter
      9 #include "js/RootingAPI.h"
     10 
     11 #include "vm/JSContext.h"
     12 #include "vm/JSONPrinter.h"  // js::JSONPrinter
     13 #include "vm/SymbolType.h"
     14 
     15 #include "vm/JSAtomUtils-inl.h"  // AtomToId
     16 
     17 using namespace js;
     18 
     19 static const JS::PropertyKey voidKeyValue = JS::PropertyKey::Void();
     20 
     21 const JS::HandleId JS::VoidHandlePropertyKey =
     22    JS::HandleId::fromMarkedLocation(&voidKeyValue);
     23 
     24 bool JS::PropertyKey::isPrivateName() const {
     25  return isSymbol() && toSymbol()->isPrivateName();
     26 }
     27 
     28 bool JS::PropertyKey::isWellKnownSymbol(JS::SymbolCode code) const {
     29  MOZ_ASSERT(uint32_t(code) < WellKnownSymbolLimit);
     30  if (!isSymbol()) {
     31    return false;
     32  }
     33  return toSymbol()->code() == code;
     34 }
     35 
     36 /* static */ JS::PropertyKey JS::PropertyKey::fromPinnedString(JSString* str) {
     37  MOZ_ASSERT(AtomIsPinned(TlsContext.get(), &str->asAtom()));
     38  return js::AtomToId(&str->asAtom());
     39 }
     40 
     41 /* static */ bool JS::PropertyKey::isNonIntAtom(JSAtom* atom) {
     42  uint32_t index;
     43  if (!atom->isIndex(&index)) {
     44    return true;
     45  }
     46  static_assert(PropertyKey::IntMin == 0);
     47  return index > PropertyKey::IntMax;
     48 }
     49 
     50 /* static */ bool JS::PropertyKey::isNonIntAtom(JSString* str) {
     51  return JS::PropertyKey::isNonIntAtom(&str->asAtom());
     52 }
     53 
     54 #if defined(DEBUG) || defined(JS_JITSPEW)
     55 
     56 void JS::PropertyKey::dump() const {
     57  js::Fprinter out(stderr);
     58  dump(out);
     59 }
     60 
     61 void JS::PropertyKey::dump(js::GenericPrinter& out) const {
     62  js::JSONPrinter json(out);
     63  dump(json);
     64  out.put("\n");
     65 }
     66 
     67 void JS::PropertyKey::dump(js::JSONPrinter& json) const {
     68  json.beginObject();
     69  dumpFields(json);
     70  json.endObject();
     71 }
     72 
     73 void JS::PropertyKey::dumpFields(js::JSONPrinter& json) const {
     74  if (isAtom()) {
     75    json.property("type", "atom");
     76    toAtom()->dumpFields(json);
     77  } else if (isInt()) {
     78    json.property("type", "int");
     79    json.property("value", toInt());
     80  } else if (isSymbol()) {
     81    json.property("type", "symbol");
     82    toSymbol()->dumpFields(json);
     83  } else if (isVoid()) {
     84    json.property("type", "void");
     85  } else {
     86    json.formatProperty("type", "Unknown(%zx)", size_t(asRawBits()));
     87  }
     88 }
     89 
     90 void JS::PropertyKey::dumpPropertyName(js::GenericPrinter& out) const {
     91  if (isAtom()) {
     92    toAtom()->dumpPropertyName(out);
     93  } else if (isInt()) {
     94    out.printf("%d", toInt());
     95  } else if (isSymbol()) {
     96    toSymbol()->dumpPropertyName(out);
     97  } else if (isVoid()) {
     98    out.put("(void)");
     99  } else {
    100    out.printf("Unknown(%zx)", size_t(asRawBits()));
    101  }
    102 }
    103 
    104 void JS::PropertyKey::dumpStringContent(js::GenericPrinter& out) const {
    105  if (isAtom()) {
    106    toAtom()->dumpStringContent(out);
    107  } else if (isInt()) {
    108    out.printf("%d", toInt());
    109  } else if (isSymbol()) {
    110    toSymbol()->dumpStringContent(out);
    111  } else if (isVoid()) {
    112    out.put("(void)");
    113  } else {
    114    out.printf("Unknown(%zx)", size_t(asRawBits()));
    115  }
    116 }
    117 
    118 #endif /* defined(DEBUG) || defined(JS_JITSPEW) */