Add endian parameter to the get/set functions in ByteData.

tests/standalone/bytedata_test.dart

+// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+//
+// Dart test program for testing typed data.
+
+// Library tag to be able to run in html test framework.
+library ByteDataTest;
+
+import "package:expect/expect.dart";
+import 'dart:typeddata';
+
+testGetters() {
+  bool host_is_little_endian = 
+    (new Uint8List.view(new Uint16List.fromList([1]).buffer))[0] == 1;
+
+  var list = new Uint8List(8);
+  list[0] = 0xf1;
+  list[1] = 0xf2;
+  list[2] = 0xf3;
+  list[3] = 0xf4;
+  list[4] = 0xf5;
+  list[5] = 0xf6;
+  list[6] = 0xf7;
+  list[7] = 0xf8;
+  var ba = list.buffer;
+
+  ByteData bd = new ByteData.view(ba);
+  int value;
+  int expected_value_be = -3598;
+  int expected_value_le = -3343;
+
+  value = bd.getInt16(0);  // Default is big endian access.
+  Expect.equals(expected_value_be, value);
+  value = bd.getInt16(0, Endianness.BIG_ENDIAN);
+  Expect.equals(expected_value_be, value);
+  value = bd.getInt16(0, Endianness.LITTLE_ENDIAN);
+  Expect.equals(expected_value_le, value);
+  value = bd.getInt16(0, Endianness.HOST_ENDIAN);
+  if (host_is_little_endian) {
+    Expect.isTrue(Endianness.HOST_ENDIAN === Endianness.LITTLE_ENDIAN);
+    Expect.equals(expected_value_le, value);
+  } else {
+    Expect.isTrue(Endianness.HOST_ENDIAN === Endianness.BIG_ENDIAN);
+    Expect.equals(expected_value_be, value);
+  }
+
+  value = bd.getUint16(0);  // Default is big endian access.
+  Expect.equals(0xf1f2, value);
+  value = bd.getUint16(0, Endianness.BIG_ENDIAN);
+  Expect.equals(0xf1f2, value);
+  value = bd.getUint16(0, Endianness.LITTLE_ENDIAN);
+  Expect.equals(0xf2f1, value);
+  if (host_is_little_endian) {
+    Expect.isTrue(Endianness.HOST_ENDIAN === Endianness.LITTLE_ENDIAN);
+    Expect.equals(0xf2f1, value);
+  } else {
+    Expect.isTrue(Endianness.HOST_ENDIAN === Endianness.BIG_ENDIAN);
+    Expect.equals(0xf1f2, value);
+  }
+
+  expected_value_be = -235736076;
+  expected_value_le = -185339151;
+
+  value = bd.getInt32(0);  // Default is big endian access.
+  Expect.equals(expected_value_be, value);
+  value = bd.getInt32(0, Endianness.BIG_ENDIAN);
+  Expect.equals(expected_value_be, value);
+  value = bd.getInt32(0, Endianness.LITTLE_ENDIAN);
+  Expect.equals(expected_value_le, value);
+  if (host_is_little_endian) {
+    Expect.isTrue(Endianness.HOST_ENDIAN === Endianness.LITTLE_ENDIAN);
+    Expect.equals(expected_value_le, value);
+  } else {
+    Expect.isTrue(Endianness.HOST_ENDIAN === Endianness.BIG_ENDIAN);
+    Expect.equals(expected_value_be, value);
+  }
+
+  value = bd.getUint32(0);  // Default is big endian access.
+  Expect.equals(0xf1f2f3f4, value);
+  value = bd.getUint32(0, Endianness.BIG_ENDIAN);
+  Expect.equals(0xf1f2f3f4, value);
+  value = bd.getUint32(0, Endianness.LITTLE_ENDIAN);
+  Expect.equals(0xf4f3f2f1, value);
+  if (host_is_little_endian) {
+    Expect.isTrue(Endianness.HOST_ENDIAN === Endianness.LITTLE_ENDIAN);
+    Expect.equals(0xf4f3f2f1, value);
+  } else {
+    Expect.isTrue(Endianness.HOST_ENDIAN === Endianness.BIG_ENDIAN);
+    Expect.equals(0xf1f2f3f4, value);
+  }
+
+  expected_value_be = -1012478732780767240;
+  expected_value_le = -506664896818842895;
+
+  value = bd.getInt64(0);  // Default is big endian access.
+  Expect.equals(expected_value_be, value);
+  value = bd.getInt64(0, Endianness.BIG_ENDIAN);
+  Expect.equals(expected_value_be, value);
+  value = bd.getInt64(0, Endianness.LITTLE_ENDIAN);
+  Expect.equals(expected_value_le, value);
+  if (Endianness.HOST_ENDIAN === Endianness.LITTLE_ENDIAN) {
+    Expect.isTrue(Endianness.HOST_ENDIAN === Endianness.LITTLE_ENDIAN);
+    Expect.equals(expected_value_le, value);
+  } else {
+    Expect.isTrue(Endianness.HOST_ENDIAN === Endianness.BIG_ENDIAN);
+    Expect.equals(expected_value_be, value);
+  }
+
+  value = bd.getUint64(0);  // Default is big endian access.
+  Expect.equals(0xf1f2f3f4f5f6f7f8, value);
+  value = bd.getUint64(0, Endianness.BIG_ENDIAN);
+  Expect.equals(0xf1f2f3f4f5f6f7f8, value);
+  value = bd.getUint64(0, Endianness.LITTLE_ENDIAN);
+  Expect.equals(0xf8f7f6f5f4f3f2f1, value);
+  if (host_is_little_endian) {
+    Expect.isTrue(Endianness.HOST_ENDIAN === Endianness.LITTLE_ENDIAN);
+    Expect.equals(0xf8f7f6f5f4f3f2f1, value);
+  } else {
+    Expect.isTrue(Endianness.HOST_ENDIAN === Endianness.BIG_ENDIAN);
+    Expect.equals(0xf1f2f3f4f5f6f7f8, value);
+  }
+
+  double expected_be_value = -2.4060893954673178e+30;
+  double expected_le_value = -1.5462104171572421e+32;
+  value = bd.getFloat32(0);  // Default is big endian access.
+  Expect.equals(expected_be_value, value);
+  value = bd.getFloat32(0, Endianness.BIG_ENDIAN);
+  Expect.equals(expected_be_value, value);
+  value = bd.getFloat32(0, Endianness.LITTLE_ENDIAN);
+  Expect.equals(expected_le_value, value);
+  if (host_is_little_endian) {
+    Expect.isTrue(Endianness.HOST_ENDIAN === Endianness.LITTLE_ENDIAN);
+    Expect.equals(expected_le_value, value);
+  } else {
+    Expect.isTrue(Endianness.HOST_ENDIAN === Endianness.BIG_ENDIAN);
+    Expect.equals(expected_be_value, value);
+  }
+
+
+  expected_be_value = -7.898661740976602e+240;
+  expected_le_value = -5.185705956736366e+274;
+  value = bd.getFloat64(0);  // Default is big endian access.
+  Expect.equals(expected_be_value, value);
+  value = bd.getFloat64(0, Endianness.BIG_ENDIAN);
+  Expect.equals(expected_be_value, value);
+  value = bd.getFloat64(0, Endianness.LITTLE_ENDIAN);
+  Expect.equals(expected_le_value, value);
+  if (host_is_little_endian) {
+    Expect.isTrue(Endianness.HOST_ENDIAN === Endianness.LITTLE_ENDIAN);
+    Expect.equals(expected_le_value, value);
+  } else {
+    Expect.isTrue(Endianness.HOST_ENDIAN === Endianness.BIG_ENDIAN);
+    Expect.equals(expected_be_value, value);
+  }
+}
+
+
+validate16be(var list) {
+  Expect.equals(0xf1, list[0]);
+  Expect.equals(0xf2, list[1]);
+}
+
+
+validate16le(var list) {
+  Expect.equals(0xf2, list[0]);
+  Expect.equals(0xf1, list[1]);
+}
+
+
+validate32be(var list) {
+  Expect.equals(0xf1, list[0]);
+  Expect.equals(0xf2, list[1]);
+  Expect.equals(0xf3, list[2]);
+  Expect.equals(0xf4, list[3]);
+}
+
+
+validate32le(var list) {
+  Expect.equals(0xf4, list[0]);
+  Expect.equals(0xf3, list[1]);
+  Expect.equals(0xf2, list[2]);
+  Expect.equals(0xf1, list[3]);
+}
+
+
+validate64be(var list) {
+  Expect.equals(0xf1, list[0]);
+  Expect.equals(0xf2, list[1]);
+  Expect.equals(0xf3, list[2]);
+  Expect.equals(0xf4, list[3]);
+  Expect.equals(0xf5, list[4]);
+  Expect.equals(0xf6, list[5]);
+  Expect.equals(0xf7, list[6]);
+  Expect.equals(0xf8, list[7]);
+}
+
+
+validate64le(var list) {
+  Expect.equals(0xf8, list[0]);
+  Expect.equals(0xf7, list[1]);
+  Expect.equals(0xf6, list[2]);
+  Expect.equals(0xf5, list[3]);
+  Expect.equals(0xf4, list[4]);
+  Expect.equals(0xf3, list[5]);
+  Expect.equals(0xf2, list[6]);
+  Expect.equals(0xf1, list[7]);
+}
+
+
+testSetters() {
+  bool host_is_little_endian = 
+    (new Uint8List.view(new Uint16List.fromList([1]).buffer))[0] == 1;
+
+  var list = new Uint8List(8);
+  for (int i = 0; i < list.length; i++) {
+    list[i] = 0;
+  }
+  var ba = list.buffer;
+  ByteData bd = new ByteData.view(ba);
+
+  bd.setInt16(0, 0xf1f2);  // Default is big endian access.
+  validate16be(list);
+  bd.setInt16(0, 0xf1f2, Endianness.BIG_ENDIAN);
+  validate16be(list);
+  bd.setInt16(0, 0xf1f2, Endianness.LITTLE_ENDIAN);
+  validate16le(list);
+  bd.setInt16(0, 0xf1f2, Endianness.HOST_ENDIAN);
+  if (host_is_little_endian) {
+    Expect.isTrue(Endianness.HOST_ENDIAN === Endianness.LITTLE_ENDIAN);
+    validate16le(list);
+  } else {
+    Expect.isTrue(Endianness.HOST_ENDIAN === Endianness.BIG_ENDIAN);
+    validate16be(list);
+  }
+
+  bd.setUint16(0, 0xf1f2);  // Default is big endian access.
+  validate16be(list);
+  bd.setUint16(0, 0xf1f2, Endianness.BIG_ENDIAN);
+  validate16be(list);
+  bd.setUint16(0, 0xf1f2, Endianness.LITTLE_ENDIAN);
+  validate16le(list);
+  bd.setUint16(0, 0xf1f2, Endianness.HOST_ENDIAN);
+  if (host_is_little_endian) {
+    Expect.isTrue(Endianness.HOST_ENDIAN === Endianness.LITTLE_ENDIAN);
+    validate16le(list);
+  } else {
+    Expect.isTrue(Endianness.HOST_ENDIAN === Endianness.BIG_ENDIAN);
+    validate16be(list);
+  }
+
+  bd.setInt32(0, 0xf1f2f3f4);  // Default is big endian access.
+  validate32be(list);
+  bd.setInt32(0, 0xf1f2f3f4, Endianness.BIG_ENDIAN);
+  validate32be(list);
+  bd.setInt32(0, 0xf1f2f3f4, Endianness.LITTLE_ENDIAN);
+  validate32le(list);
+  bd.setInt32(0, 0xf1f2f3f4, Endianness.HOST_ENDIAN);
+  if (host_is_little_endian) {
+    Expect.isTrue(Endianness.HOST_ENDIAN === Endianness.LITTLE_ENDIAN);
+    validate32le(list);
+  } else {
+    Expect.isTrue(Endianness.HOST_ENDIAN === Endianness.BIG_ENDIAN);
+    validate32be(list);
+  }
+
+  bd.setUint32(0, 0xf1f2f3f4);  // Default is big endian access.
+  validate32be(list);
+  bd.setUint32(0, 0xf1f2f3f4, Endianness.BIG_ENDIAN);
+  validate32be(list);
+  bd.setUint32(0, 0xf1f2f3f4, Endianness.LITTLE_ENDIAN);
+  validate32le(list);
+  bd.setUint32(0, 0xf1f2f3f4, Endianness.HOST_ENDIAN);
+  if (host_is_little_endian) {
+    Expect.isTrue(Endianness.HOST_ENDIAN === Endianness.LITTLE_ENDIAN);
+    validate32le(list);
+  } else {
+    Expect.isTrue(Endianness.HOST_ENDIAN === Endianness.BIG_ENDIAN);
+    validate32be(list);
+  }
+
+  bd.setInt64(0, 0xf1f2f3f4f5f6f7f8);  // Default is big endian access.
+  validate64be(list);
+  bd.setInt64(0, 0xf1f2f3f4f5f6f7f8, Endianness.BIG_ENDIAN);
+  validate64be(list);
+  bd.setInt64(0, 0xf1f2f3f4f5f6f7f8, Endianness.LITTLE_ENDIAN);
+  validate64le(list);
+  bd.setInt64(0, 0xf1f2f3f4f5f6f7f8, Endianness.HOST_ENDIAN);
+  if (host_is_little_endian) {
+    Expect.isTrue(Endianness.HOST_ENDIAN === Endianness.LITTLE_ENDIAN);
+    validate64le(list);
+  } else {
+    Expect.isTrue(Endianness.HOST_ENDIAN === Endianness.BIG_ENDIAN);
+    validate64be(list);
+  }
+
+  bd.setUint64(0, 0xf1f2f3f4f5f6f7f8);  // Default is big endian access.
+  validate64be(list);
+  bd.setUint64(0, 0xf1f2f3f4f5f6f7f8, Endianness.BIG_ENDIAN);
+  validate64be(list);
+  bd.setUint64(0, 0xf1f2f3f4f5f6f7f8, Endianness.LITTLE_ENDIAN);
+  validate64le(list);
+  bd.setUint64(0, 0xf1f2f3f4f5f6f7f8, Endianness.HOST_ENDIAN);
+  if (host_is_little_endian) {
+    Expect.isTrue(Endianness.HOST_ENDIAN === Endianness.LITTLE_ENDIAN);
+    validate64le(list);
+  } else {
+    Expect.isTrue(Endianness.HOST_ENDIAN === Endianness.BIG_ENDIAN);
+    validate64be(list);
+  }
+
+  bd.setFloat32(0, -2.4060893954673178e+30);  // Default is big endian access.
+  validate32be(list);
+  bd.setFloat32(0, -2.4060893954673178e+30, Endianness.BIG_ENDIAN);
+  validate32be(list);
+  bd.setFloat32(0, -2.4060893954673178e+30, Endianness.LITTLE_ENDIAN);
+  validate32le(list);
+  bd.setFloat32(0, -2.4060893954673178e+30, Endianness.HOST_ENDIAN);
+  if (host_is_little_endian) {
+    Expect.isTrue(Endianness.HOST_ENDIAN === Endianness.LITTLE_ENDIAN);
+    validate32le(list);
+  } else {
+    Expect.isTrue(Endianness.HOST_ENDIAN === Endianness.BIG_ENDIAN);
+    validate32be(list);
+  }
+
+  bd.setFloat64(0, -7.898661740976602e+240);  // Default is big endian access.
+  validate64be(list);
+  bd.setFloat64(0, -7.898661740976602e+240, Endianness.BIG_ENDIAN);
+  validate64be(list);
+  bd.setFloat64(0, -7.898661740976602e+240, Endianness.LITTLE_ENDIAN);
+  validate64le(list);
+  bd.setFloat64(0, -7.898661740976602e+240, Endianness.HOST_ENDIAN);
+  if (host_is_little_endian) {
+    Expect.isTrue(Endianness.HOST_ENDIAN === Endianness.LITTLE_ENDIAN);
+    validate64le(list);
+  } else {
+    Expect.isTrue(Endianness.HOST_ENDIAN === Endianness.BIG_ENDIAN);
+    validate64be(list);
+  }
+
+}
+
+
+main() {
+  testGetters();
+  testSetters();
+}