Make the fuchsia mojo/public repo the source of truth.

mojo/public/cpp/bindings/lib/map_data_internal.h

-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef MOJO_PUBLIC_CPP_BINDINGS_LIB_MAP_DATA_INTERNAL_H_
-#define MOJO_PUBLIC_CPP_BINDINGS_LIB_MAP_DATA_INTERNAL_H_
-
-#include <string>
-#include <vector>
-
-#include "mojo/public/cpp/bindings/lib/array_internal.h"
-#include "mojo/public/cpp/bindings/lib/validate_params.h"
-#include "mojo/public/cpp/bindings/lib/validation_errors.h"
-#include "mojo/public/cpp/bindings/lib/validation_util.h"
-
-namespace mojo {
-namespace internal {
-
-inline const ArrayValidateParams* GetMapKeyValidateParamsDefault() {
-  // The memory allocated here never gets released to not cause an exit time
-  // destructor.
-  static const ArrayValidateParams* validate_params =
-      new ArrayValidateParams(0, false, nullptr);
-  return validate_params;
-}
-
-inline const ArrayValidateParams* GetMapKeyValidateParamsForStrings() {
-  // The memory allocated here never gets released to not cause an exit time
-  // destructor.
-  static const ArrayValidateParams* validate_params = new ArrayValidateParams(
-      0, false, new ArrayValidateParams(0, false, nullptr));
-  return validate_params;
-}
-
-template <typename MapKey>
-struct MapKeyValidateParamsFactory {
-  static const ArrayValidateParams* Get() {
-    return GetMapKeyValidateParamsDefault();
-  }
-};
-
-// For non-nullable strings only. (Which is OK; map keys can't be null.)
-template <>
-struct MapKeyValidateParamsFactory<mojo::internal::Array_Data<char>*> {
-  static const ArrayValidateParams* Get() {
-    return GetMapKeyValidateParamsForStrings();
-  }
-};
-
-// Map serializes into a struct which has two arrays as struct fields, the keys
-// and the values.
-// TODO(vardhan): Fill out the missing validation error messages.
-template <typename Key, typename Value>
-class Map_Data {
- public:
-  static Map_Data* New(Buffer* buf) {
-    return new (buf->Allocate(sizeof(Map_Data))) Map_Data();
-  }
-
-  static ValidationError Validate(
-      const void* data,
-      BoundsChecker* bounds_checker,
-      const ArrayValidateParams* value_validate_params,
-      std::string* err) {
-    if (!data)
-      return ValidationError::NONE;
-
-    ValidationError retval =
-        ValidateStructHeaderAndClaimMemory(data, bounds_checker, err);
-    if (retval != ValidationError::NONE)
-      return retval;
-
-    const Map_Data* object = static_cast<const Map_Data*>(data);
-    if (object->header_.num_bytes != sizeof(Map_Data) ||
-        object->header_.version != 0) {
-      MOJO_INTERNAL_DEBUG_SET_ERROR_MSG(err) << "";
-      return ValidationError::UNEXPECTED_STRUCT_HEADER;
-    }
-
-    if (!ValidateEncodedPointer(&object->keys.offset)) {
-      MOJO_INTERNAL_DEBUG_SET_ERROR_MSG(err) << "";
-      return ValidationError::ILLEGAL_POINTER;
-    }
-
-    if (!object->keys.offset) {
-      MOJO_INTERNAL_DEBUG_SET_ERROR_MSG(err) << "null key array in map struct";
-      return ValidationError::UNEXPECTED_NULL_POINTER;
-    }
-
-    const ArrayValidateParams* key_validate_params =
-        MapKeyValidateParamsFactory<Key>::Get();
-    retval =
-        Array_Data<Key>::Validate(DecodePointerRaw(&object->keys.offset),
-                                  bounds_checker, key_validate_params, err);
-    if (retval != ValidationError::NONE)
-      return retval;
-
-    if (!ValidateEncodedPointer(&object->values.offset)) {
-      MOJO_INTERNAL_DEBUG_SET_ERROR_MSG(err) << "";
-      return ValidationError::ILLEGAL_POINTER;
-    }
-
-    if (!object->values.offset) {
-      MOJO_INTERNAL_DEBUG_SET_ERROR_MSG(err)
-          << "null value array in map struct";
-      return ValidationError::UNEXPECTED_NULL_POINTER;
-    }
-
-    retval =
-        Array_Data<Value>::Validate(DecodePointerRaw(&object->values.offset),
-                                    bounds_checker, value_validate_params, err);
-    if (retval != ValidationError::NONE)
-      return retval;
-
-    const ArrayHeader* key_header =
-        static_cast<const ArrayHeader*>(DecodePointerRaw(&object->keys.offset));
-    const ArrayHeader* value_header = static_cast<const ArrayHeader*>(
-        DecodePointerRaw(&object->values.offset));
-    if (key_header->num_elements != value_header->num_elements) {
-      MOJO_INTERNAL_DEBUG_SET_ERROR_MSG(err) << "";
-      return ValidationError::DIFFERENT_SIZED_ARRAYS_IN_MAP;
-    }
-
-    return ValidationError::NONE;
-  }
-
-  StructHeader header_;
-
-  ArrayPointer<Key> keys;
-  ArrayPointer<Value> values;
-
-  void EncodePointersAndHandles(std::vector<mojo::Handle>* handles) {
-    Encode(&keys, handles);
-    Encode(&values, handles);
-  }
-
-  void DecodePointersAndHandles(std::vector<mojo::Handle>* handles) {
-    Decode(&keys, handles);
-    Decode(&values, handles);
-  }
-
- private:
-  Map_Data() {
-    header_.num_bytes = sizeof(*this);
-    header_.version = 0;
-  }
-  ~Map_Data() = delete;
-};
-static_assert(sizeof(Map_Data<char, char>) == 24, "Bad sizeof(Map_Data)");
-
-}  // namespace internal
-}  // namespace mojo
-
-#endif  // MOJO_PUBLIC_CPP_BINDINGS_LIB_MAP_DATA_INTERNAL_H_