parser/html/nsHtml5Portability.cpp
author Franziskus Kiefer <franziskuskiefer@gmail.com>
Fri, 01 Jun 2018 09:44:01 +0200
changeset 420853 4f9eec6361279d8657ffc4e6ef5c84e8f5d08c56
parent 417178 a31c1b8a41f81fb564bd86e1c22617595d61a42d
child 445372 e9267d39ec81476831da99bd3b98557877962ca3
permissions -rw-r--r--
Bug 1460617 - land NSS 8232a58332dd UPGRADE_NSS_RELEASE, r=me

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nsHtml5Portability.h"
#include "jArray.h"
#include "nsAtom.h"
#include "nsHtml5TreeBuilder.h"
#include "nsString.h"

nsAtom*
nsHtml5Portability::newLocalNameFromBuffer(char16_t* buf,
                                           int32_t length,
                                           nsHtml5AtomTable* interner)
{
  NS_ASSERTION(interner, "Didn't get an atom service.");
  return interner->GetAtom(nsDependentSubstring(buf, buf + length));
}

static bool
ContainsWhiteSpace(mozilla::Span<char16_t> aSpan)
{
  for (char16_t c : aSpan) {
    if (nsContentUtils::IsHTMLWhitespace(c)) {
      return true;
    }
  }
  return false;
}

nsHtml5String
nsHtml5Portability::newStringFromBuffer(char16_t* buf,
                                        int32_t offset,
                                        int32_t length,
                                        nsHtml5TreeBuilder* treeBuilder,
                                        bool maybeAtomize)
{
  if (!length) {
    return nsHtml5String::EmptyString();
  }
  if (maybeAtomize &&
      !ContainsWhiteSpace(mozilla::MakeSpan(buf + offset, length))) {
    return nsHtml5String::FromAtom(
      NS_AtomizeMainThread(nsDependentSubstring(buf + offset, length)));
  }
  return nsHtml5String::FromBuffer(buf + offset, length, treeBuilder);
}

nsHtml5String
nsHtml5Portability::newEmptyString()
{
  return nsHtml5String::EmptyString();
}

nsHtml5String
nsHtml5Portability::newStringFromLiteral(const char* literal)
{
  return nsHtml5String::FromLiteral(literal);
}

nsHtml5String
nsHtml5Portability::newStringFromString(nsHtml5String string)
{
  return string.Clone();
}

jArray<char16_t, int32_t>
nsHtml5Portability::newCharArrayFromLocal(nsAtom* local)
{
  nsAutoString temp;
  local->ToString(temp);
  int32_t len = temp.Length();
  jArray<char16_t, int32_t> arr = jArray<char16_t, int32_t>::newJArray(len);
  memcpy(arr, temp.BeginReading(), len * sizeof(char16_t));
  return arr;
}

jArray<char16_t, int32_t>
nsHtml5Portability::newCharArrayFromString(nsHtml5String string)
{
  MOZ_RELEASE_ASSERT(string);
  uint32_t len = string.Length();
  MOZ_RELEASE_ASSERT(len < INT32_MAX);
  jArray<char16_t, int32_t> arr = jArray<char16_t, int32_t>::newJArray(len);
  string.CopyToBuffer(arr);
  return arr;
}

nsAtom*
nsHtml5Portability::newLocalFromLocal(nsAtom* local, nsHtml5AtomTable* interner)
{
  MOZ_ASSERT(local, "Atom was null.");
  MOZ_ASSERT(interner, "Atom table was null");
  if (!local->IsStatic()) {
    nsAutoString str;
    local->ToString(str);
    local = interner->GetAtom(str);
  }
  return local;
}

bool
nsHtml5Portability::localEqualsBuffer(nsAtom* local,
                                      char16_t* buf,
                                      int32_t length)
{
  return local->Equals(buf, length);
}

bool
nsHtml5Portability::lowerCaseLiteralIsPrefixOfIgnoreAsciiCaseString(
  const char* lowerCaseLiteral,
  nsHtml5String string)
{
  return string.LowerCaseStartsWithASCII(lowerCaseLiteral);
}

bool
nsHtml5Portability::lowerCaseLiteralEqualsIgnoreAsciiCaseString(
  const char* lowerCaseLiteral,
  nsHtml5String string)
{
  return string.LowerCaseEqualsASCII(lowerCaseLiteral);
}

bool
nsHtml5Portability::literalEqualsString(const char* literal,
                                        nsHtml5String string)
{
  return string.EqualsASCII(literal);
}

bool
nsHtml5Portability::stringEqualsString(nsHtml5String one, nsHtml5String other)
{
  return one.Equals(other);
}

void
nsHtml5Portability::initializeStatics()
{
}

void
nsHtml5Portability::releaseStatics()
{
}