bindings/tests/test_structs.mojom

// Copyright 2013 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.

[JavaPackage="org.chromium.mojo.bindings.test.mojom.test_structs"]
module mojo.test;

import "mojo/public/interfaces/bindings/tests/rect.mojom";

struct NamedRegion {
  string? name;
  array<Rect>? rects;
};

struct RectPair {
  Rect? first;
  Rect? second;
};

struct EmptyStruct {
};

[Native]
struct UnmappedNativeStruct;

// Used to verify that struct fields which don't specify a default are
// initialized to: false for bool, 0 for numbers, and null for strings,
// handles, and structs. The "?" nullable suffix shouldn't have any
// impact on initial field values.

struct NoDefaultFieldValues {
  bool f0;
  int8 f1;
  uint8 f2;
  int16 f3;
  uint16 f4;
  int32 f5;
  uint32 f6;
  int64 f7;
  uint64 f8;
  float f9;
  double f10;
  string f11;
  string? f12;
  handle<message_pipe> f13;
  handle<data_pipe_consumer> f14;
  handle<data_pipe_producer> f15;
  handle<message_pipe>? f16;
  handle<data_pipe_consumer>? f17;
  handle<data_pipe_producer>? f18;
  handle f19;
  handle? f20;
  handle<shared_buffer> f21;
  handle<shared_buffer>? f22;
  array<string> f23;
  array<string?> f24;
  array<string>? f25;
  array<string?>? f26;
  EmptyStruct f27;
  EmptyStruct? f28;
};

// Used to verify that struct fields with an explicit default value
// are initialized correctly. The "?" nullable suffix shouldn't have any
// impact on initial field values.

struct DefaultFieldValues {
  const string kFoo = "foo";
  bool f0 = true;
  int8 f1 = 100;
  uint8 f2 = 100;
  int16 f3 = 100;
  uint16 f4 = 100;
  int32 f5 = 100;
  uint32 f6 = 100;
  int64 f7 = 100;
  uint64 f8 = 100;
  float f9 = 100;
  float f10 = 100.0;
  double f11 = 100;
  double f12 = 100.0;
  string f13 = kFoo;
  string? f14 = kFoo;
  Rect f15 = default;
  Rect? f16 = default;
};

// Used to verify that the code generated for enum and const values defined
// within a struct is correct. Assuming that a constant's value can be a literal
// or another constant and that enum values can either be an integer constant or
// another value from the same enum type.

struct ScopedConstants {
  const int32 TEN = 10;
  const int32 ALSO_TEN = TEN;
  enum EType {
    E0,
    E1,
    E2 = 10,
    E3 = E2,
    E4,
  };
  EType f0 = E0; // 0
  EType f1 = E1; // 1
  EType f2 = E2; // 10
  EType f3 = E3; // 10
  EType f4 = E4; // 11
  int32 f5 = TEN;
  int32 f6 = ALSO_TEN;
};

// Used to verify that all possible Map key field types can be encoded and
// decoded successfully.

struct MapKeyTypes {
  // TODO(yzshen): WTF::HashMap doesn't support bool as key.
  // map<bool, bool> f0;
  map<int8, int8> f1;
  map<uint8, uint8> f2;
  map<int16, int16> f3;
  map<uint16, uint16> f4;
  map<int32, int32> f5;
  map<uint32, uint32> f6;
  map<int64, int64> f7;
  map<uint64, uint64> f8;
  map<float, float> f9;
  map<double, double> f10;
  map<string, string> f11;
  // TODO(crbug.com/628104): JS doesn't support struct as key.  map<Rect, Rect>
  // f12;
};

// Used to verify that various map value types can be encoded and decoded
// successfully.

struct MapValueTypes {
  map<string, array<string>> f0;
  map<string, array<string>?> f1;
  map<string, array<string?>> f2;
  map<string, array<string, 2>> f3;
  map<string, array<array<string, 2>?>> f4;
  map<string, array<array<string, 2>, 1>> f5;
  map<string, Rect?> f6;
  map<string, map<string, string>> f7;
  map<string, array<map<string, string>>> f8;
  map<string, handle> f9;
  map<string, array<handle>> f10;
  map<string, map<string, handle>> f11;
};

// Used to verify that various array types can be encoded and decoded
// successfully.

struct ArrayValueTypes {
  array<int8> f0;
  array<int16> f1;
  array<int32> f2;
  array<int64> f3;
  array<float> f4;
  array<double> f5;
  array<SomeInterface> f6;
  array<SomeInterface&> f7;
};

// Used to verify that various float and double values can be encoded and
// decoded correctly.

struct FloatNumberValues {
  const double V0 = double.INFINITY;
  const double V1 = double.NEGATIVE_INFINITY;
  const double V2 = double.NAN;
  const float V3 = float.INFINITY;
  const float V4 = float.NEGATIVE_INFINITY;
  const float V5 = float.NAN;
  const float V6 = 0;
  const double V7 = 1234567890.123;
  const double V8 = 1.2E+20;
  const double V9 = -1.2E+20;

  double f0 = V0;
  double f1 = V1;
  double f2 = V2;
  float f3 = V3;
  float f4 = V4;
  float f5 = V5;
  float f6 = V6;
  double f7 = V7;
  double f8 = V8;
  double f9 = V9;
};

// Used to verify that various signed integer values can be encoded and
// decoded correctly.

struct IntegerNumberValues {
  const int8 V0 = -128; // Minimum
  const int8 V1 = -1;   // -1
  const int8 V2 = 0;    // 0
  const int8 V3 = 42;   // An arbitrary valid value.
  const int8 V4 = 127;  // Maximum

  const int16 V5 = -32768; // ...
  const int16 V6 = -1;
  const int16 V7 = 0;
  const int16 V8 = 12345;
  const int16 V9 = 32767;

  const int32 V10 = -2147483648;
  const int32 V11 = -1;
  const int32 V12 = 0;
  const int32 V13 = 1234567890;
  const int32 V14 = 2147483647;

  // The limits for JavaScript integers are +/- (2^53 - 1).
  const int64 V15 = -9007199254740991; // Number.MIN_SAFE_INTEGER
  const int64 V16 = -1;
  const int64 V17 = 0;
  const int64 V18 = 1234567890123456;
  const int64 V19 = 9007199254740991; // Number.MAX_SAFE_INTEGER

  int8 f0 = V0;
  int8 f1 = V1;
  int8 f2 = V2;
  int8 f3 = V3;
  int8 f4 = V4;

  int16 f5 = V5;
  int16 f6 = V6;
  int16 f7 = V7;
  int16 f8 = V8;
  int16 f9 = V9;

  int32 f10 = V10;
  int32 f11 = V11;
  int32 f12 = V12;
  int32 f13 = V13;
  int32 f14 = V14;

  int64 f15 = V15;
  int64 f16 = V16;
  int64 f17 = V17;
  int64 f18 = V18;
  int64 f19 = V19;
};

// Used to verify that various unsigned integer values can be encoded and
// decoded correctly.

struct UnsignedNumberValues {
  const uint8 V0 = 0;    // Minimum = 0.
  const uint8 V1 = 42;   // An arbitrary valid value.
  const uint8 V2 = 0xFF; // Maximum

  const uint16 V3 = 0; // ...
  const uint16 V4 = 12345;
  const uint16 V5 = 0xFFFF;

  const uint32 V6 = 0;
  const uint32 V7 = 1234567890;
  const uint32 V8 = 0xFFFFFFFF;

  // The limits for JavaScript integers are +/- (2^53 - 1).
  const uint64 V9 = 0;
  const uint64 V10 = 1234567890123456;
  const uint64 V11 = 9007199254740991; // Number.MAX_SAFE_INTEGER

  uint8 f0 = V0;
  uint8 f1 = V1;
  uint8 f2 = V2;

  uint16 f3 = V3;
  uint16 f4 = V4;
  uint16 f5 = V5;

  uint32 f6 = V6;
  uint32 f7  = V7;
  uint32 f8 = V8;

  uint64 f9 = V9;
  uint64 f10 = V10;
  uint64 f11 = V11;
};

// Used to verify that various (packed) boolean array values can be encoded
// and decoded correctly.

struct BitArrayValues {
  array<bool, 1> f0;
  array<bool, 7> f1;
  array<bool, 9> f2;
  array<bool> f3;
  array<array<bool>> f4;
  array<array<bool>?> f5;
  array<array<bool, 2>?> f6;
};

// Used to verify that different versions can be decoded correctly.

struct MultiVersionStruct {
  [MinVersion=0]
  int32 f_int32;
  [MinVersion=1]
  Rect? f_rect;
  [MinVersion=3]
  string? f_string;
  [MinVersion=5]
  array<int8>? f_array;
  [MinVersion=7]
  handle<message_pipe>? f_message_pipe;
  [MinVersion=7]
  bool f_bool;
  [MinVersion=9]
  int16 f_int16;
};

struct MultiVersionStructV0 {
  [MinVersion=0]
  int32 f_int32;
};

struct MultiVersionStructV1 {
  [MinVersion=0]
  int32 f_int32;
  [MinVersion=1]
  Rect? f_rect;
};

struct MultiVersionStructV3 {
  [MinVersion=0]
  int32 f_int32;
  [MinVersion=1]
  Rect? f_rect;
  [MinVersion=3]
  string? f_string;
};

struct MultiVersionStructV5 {
  [MinVersion=0]
  int32 f_int32;
  [MinVersion=1]
  Rect? f_rect;
  [MinVersion=3]
  string? f_string;
  [MinVersion=5]
  array<int8>? f_array;
};

struct MultiVersionStructV7 {
  [MinVersion=0]
  int32 f_int32;
  [MinVersion=1]
  Rect? f_rect;
  [MinVersion=3]
  string? f_string;
  [MinVersion=5]
  array<int8>? f_array;
  [MinVersion=7]
  handle<message_pipe>? f_message_pipe;
  [MinVersion=7]
  bool f_bool;
};

// A struct where the fields are not sorted by their ordinals.
struct ReorderedStruct {
  [MinVersion=2]
  int32 a@3 = 3;
  [MinVersion=4]
  int32 b@6 = 6;
  [MinVersion=1]
  int32 c@1 = 1;
};

// Used to verify that interfaces that are struct members can be defined in the
// same file.

interface SomeInterface {
  SomeMethod(RectPair pair) => (RectPair other_pair);
};

struct ContainsInterface {
  SomeInterface some_interface;
};

// Verify that a field can be called |other|.

struct ContainsOther {
  int32 other;
};

// Used to verify that structs can contain interface requests.

struct ContainsInterfaceRequest {
  SomeInterface& request;
};

// Used to verify that boolean fields are correctly serialized/deserialized.

struct SingleBoolStruct {
  bool value;
};

// Used to verify that structs containing typemapped types can be hashed (if the
// typemapped type itself is hashable).

struct ContainsHashable {
  TypemappedRect rect;
};

// Used to test that nested structs can be hashed. The nested struct mustn't be
// nullable.

struct SimpleNestedStruct {
  ContainsOther nested;
};