Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 162 insertions, 0 deletions

diff --git a/xpcom/string/nsTDependentSubstring.h b/xpcom/string/nsTDependentSubstring.h
new file mode 100644
index 0000000000..b5198ff2b5
--- /dev/null
+++ b/xpcom/string/nsTDependentSubstring.h
@@ -0,0 +1,162 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+// IWYU pragma: private, include "nsString.h"
+
+#ifndef nsTDependentSubstring_h
+#define nsTDependentSubstring_h
+
+#include "nsTSubstring.h"
+#include "nsTLiteralString.h"
+#include "mozilla/Span.h"
+
+/**
+ * nsTDependentSubstring_CharT
+ *
+ * A string class which wraps an external array of string characters. It
+ * is the client code's responsibility to ensure that the external buffer
+ * remains valid for a long as the string is alive.
+ *
+ * NAMES:
+ *   nsDependentSubstring for wide characters
+ *   nsDependentCSubstring for narrow characters
+ */
+template <typename T>
+class nsTDependentSubstring : public nsTSubstring<T> {
+ public:
+  typedef nsTDependentSubstring<T> self_type;
+  typedef nsTSubstring<T> substring_type;
+  typedef typename substring_type::fallible_t fallible_t;
+
+  typedef typename substring_type::char_type char_type;
+  typedef typename substring_type::char_traits char_traits;
+  typedef
+      typename substring_type::incompatible_char_type incompatible_char_type;
+
+  typedef typename substring_type::substring_tuple_type substring_tuple_type;
+
+  typedef typename substring_type::const_iterator const_iterator;
+  typedef typename substring_type::iterator iterator;
+
+  typedef typename substring_type::comparator_type comparator_type;
+
+  typedef typename substring_type::const_char_iterator const_char_iterator;
+
+  typedef typename substring_type::string_view string_view;
+
+  typedef typename substring_type::index_type index_type;
+  typedef typename substring_type::size_type size_type;
+
+  // These are only for internal use within the string classes:
+  typedef typename substring_type::DataFlags DataFlags;
+  typedef typename substring_type::ClassFlags ClassFlags;
+
+ public:
+  void Rebind(const substring_type&, size_type aStartPos,
+              size_type aLength = size_type(-1));
+
+  void Rebind(const char_type* aData, size_type aLength);
+
+  void Rebind(const char_type* aStart, const char_type* aEnd);
+
+  nsTDependentSubstring(const substring_type& aStr, size_type aStartPos,
+                        size_type aLength = size_type(-1))
+      : substring_type() {
+    Rebind(aStr, aStartPos, aLength);
+  }
+
+  nsTDependentSubstring(const char_type* aData, size_type aLength)
+      : substring_type(const_cast<char_type*>(aData), aLength, DataFlags(0),
+                       ClassFlags(0)) {}
+
+  explicit nsTDependentSubstring(mozilla::Span<const char_type> aData)
+      : nsTDependentSubstring(aData.Elements(), aData.Length()) {}
+
+  nsTDependentSubstring(const char_type* aStart, const char_type* aEnd);
+
+#if defined(MOZ_USE_CHAR16_WRAPPER)
+  template <typename Q = T, typename EnableIfChar16 = mozilla::Char16OnlyT<Q>>
+  nsTDependentSubstring(char16ptr_t aData, size_type aLength)
+      : nsTDependentSubstring(static_cast<const char16_t*>(aData), aLength) {}
+
+  template <typename Q = T, typename EnableIfChar16 = mozilla::Char16OnlyT<Q>>
+  nsTDependentSubstring(char16ptr_t aStart, char16ptr_t aEnd);
+#endif
+
+  nsTDependentSubstring(const const_iterator& aStart,
+                        const const_iterator& aEnd);
+
+  // Create a nsTDependentSubstring to be bound later
+  nsTDependentSubstring() : substring_type() {}
+
+  // auto-generated copy-constructor OK (XXX really?? what about base class
+  // copy-ctor?)
+  nsTDependentSubstring(const nsTDependentSubstring&) = default;
+
+ private:
+  // NOT USED
+  void operator=(const self_type&) =
+      delete;  // we're immutable, you can't assign into a substring
+};
+
+extern template class nsTDependentSubstring<char>;
+extern template class nsTDependentSubstring<char16_t>;
+
+template <typename T>
+inline const nsTDependentSubstring<T> Substring(const nsTSubstring<T>& aStr,
+                                                size_t aStartPos,
+                                                size_t aLength = size_t(-1)) {
+  return nsTDependentSubstring<T>(aStr, aStartPos, aLength);
+}
+
+template <typename T>
+inline const nsTDependentSubstring<T> Substring(const nsTLiteralString<T>& aStr,
+                                                size_t aStartPos,
+                                                size_t aLength = size_t(-1)) {
+  return nsTDependentSubstring<T>(aStr, aStartPos, aLength);
+}
+
+template <typename T>
+inline const nsTDependentSubstring<T> Substring(
+    const nsReadingIterator<T>& aStart, const nsReadingIterator<T>& aEnd) {
+  return nsTDependentSubstring<T>(aStart.get(), aEnd.get());
+}
+
+template <typename T>
+inline const nsTDependentSubstring<T> Substring(const T* aData,
+                                                size_t aLength) {
+  return nsTDependentSubstring<T>(aData, aLength);
+}
+
+template <typename T>
+const nsTDependentSubstring<T> Substring(const T* aStart, const T* aEnd);
+
+extern template const nsTDependentSubstring<char> Substring(const char* aStart,
+                                                            const char* aEnd);
+
+extern template const nsTDependentSubstring<char16_t> Substring(
+    const char16_t* aStart, const char16_t* aEnd);
+
+#if defined(MOZ_USE_CHAR16_WRAPPER)
+inline const nsTDependentSubstring<char16_t> Substring(char16ptr_t aData,
+                                                       size_t aLength);
+
+const nsTDependentSubstring<char16_t> Substring(char16ptr_t aStart,
+                                                char16ptr_t aEnd);
+#endif
+
+template <typename T>
+inline const nsTDependentSubstring<T> StringHead(const nsTSubstring<T>& aStr,
+                                                 size_t aCount) {
+  return nsTDependentSubstring<T>(aStr, 0, aCount);
+}
+
+template <typename T>
+inline const nsTDependentSubstring<T> StringTail(const nsTSubstring<T>& aStr,
+                                                 size_t aCount) {
+  return nsTDependentSubstring<T>(aStr, aStr.Length() - aCount, aCount);
+}
+
+#endif