bool
JSCompartment::wrap(JSContext* cx, MutableHandleString strp)
{
MOZ_ASSERT(!cx->runtime()->isAtomsCompartment(this));
MOZ_ASSERT(cx->compartment() == this);
/* If the string is already in this compartment, we are done. */
JSString* str = strp;
if (str->zoneFromAnyThread() == zone())
return true;
/* If the string is an atom, we don't have to copy. */
if (str->isAtom()) {
MOZ_ASSERT(str->isPermanentAtom() || str->zone()->isAtomsZone());
return true;
}
/* Check the cache. */
RootedValue key(cx, StringValue(str));
if (WrapperMap::Ptr p = crossCompartmentWrappers.lookup(CrossCompartmentKey(key))) {
strp.set(p->value().get().toString());
return true;
}
/* No dice. Make a copy, and cache it. */
JSString* copy = CopyStringPure(cx, str);
if (!copy)
return false;
if (!putWrapper(cx, CrossCompartmentKey(key), StringValue(copy)))
return false;
strp.set(copy);
return true;
}
bool
DebugState::getSourceMappingURL(JSContext* cx, MutableHandleString result) const
{
result.set(nullptr);
if (!maybeBytecode_)
return true;
for (const CustomSection& customSection : metadata().customSections) {
const NameInBytecode& sectionName = customSection.name;
if (strlen(SourceMappingURLSectionName) != sectionName.length ||
memcmp(SourceMappingURLSectionName, maybeBytecode_->begin() + sectionName.offset,
sectionName.length) != 0)
{
continue;
}
// Parse found "SourceMappingURL" custom section.
Decoder d(maybeBytecode_->begin() + customSection.offset,
maybeBytecode_->begin() + customSection.offset + customSection.length,
customSection.offset,
/* error = */ nullptr);
uint32_t nchars;
if (!d.readVarU32(&nchars))
return true; // ignoring invalid section data
const uint8_t* chars;
if (!d.readBytes(nchars, &chars) || d.currentPosition() != d.end())
return true; // ignoring invalid section data
UTF8Chars utf8Chars(reinterpret_cast<const char*>(chars), nchars);
JSString* str = JS_NewStringCopyUTF8N(cx, utf8Chars);
if (!str)
return false;
result.set(str);
return true;
}
// Check presence of "SourceMap:" HTTP response header.
char* sourceMapURL = metadata().sourceMapURL.get();
if (sourceMapURL && strlen(sourceMapURL)) {
UTF8Chars utf8Chars(sourceMapURL, strlen(sourceMapURL));
JSString* str = JS_NewStringCopyUTF8N(cx, utf8Chars);
if (!str)
return false;
result.set(str);
}
return true;
}
ParallelResult
jit::IntToStringPar(ForkJoinSlice *slice, int i, MutableHandleString out)
{
JSFlatString *str = Int32ToString<NoGC>(slice, i);
if (!str)
return TP_RETRY_SEQUENTIALLY;
out.set(str);
return TP_SUCCESS;
}
ParallelResult
jit::DoubleToStringPar(ForkJoinSlice *slice, double d, MutableHandleString out)
{
JSString *str = js_NumberToString<NoGC>(slice, d);
if (!str)
return TP_RETRY_SEQUENTIALLY;
out.set(str);
return TP_SUCCESS;
}
ParallelResult
jit::ConcatStringsPar(ForkJoinSlice *slice, HandleString left, HandleString right,
MutableHandleString out)
{
JSString *str = ConcatStrings<NoGC>(slice, left, right);
if (!str)
return TP_RETRY_SEQUENTIALLY;
out.set(str);
return TP_SUCCESS;
}