Move //mojo/{public, edk} underneath //third_party

mojo/public/dart/src/data_pipe.dart

-// 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.
-
-part of core;
-
-
-class _MojoDataPipeNatives {
-  static List MojoCreateDataPipe(
-      int elementBytes, int capacityBytes, int flags)
-      native "MojoDataPipe_Create";
-
-  static List MojoWriteData(int handle, ByteData data, int numBytes, int flags)
-      native "MojoDataPipe_WriteData";
-
-  static List MojoBeginWriteData(int handle, int bufferBytes, int flags)
-      native "MojoDataPipe_BeginWriteData";
-
-  static int MojoEndWriteData(int handle, int bytesWritten)
-      native "MojoDataPipe_EndWriteData";
-
-  static List MojoReadData(int handle, ByteData data, int numBytes, int flags)
-      native "MojoDataPipe_ReadData";
-
-  static List MojoBeginReadData(int handle, int bufferBytes, int flags)
-      native "MojoDataPipe_BeginReadData";
-
-  static int MojoEndReadData(int handle, int bytesRead)
-      native "MojoDataPipe_EndReadData";
-}
-
-
-class MojoDataPipeProducer {
-  static const int FLAG_NONE = 0;
-  static const int FLAG_ALL_OR_NONE = 1 << 0;
-
-  MojoHandle handle;
-  MojoResult status;
-  final int elementBytes;
-
-  MojoDataPipeProducer(
-      this.handle, [this.status = MojoResult.OK, this.elementBytes = 1]);
-
-  int write(ByteData data, [int numBytes = -1, int flags = 0]) {
-    if (handle == null) {
-      status = MojoResult.INVALID_ARGUMENT;
-      return status;
-    }
-
-    int data_numBytes = (numBytes == -1) ? data.lengthInBytes : numBytes;
-    List result = _MojoDataPipeNatives.MojoWriteData(
-        handle.h, data, data_numBytes, flags);
-    if (result == null) {
-      status = MojoResult.INVALID_ARGUMENT;
-      return status;
-    }
-
-    assert((result is List) && (result.length == 2));
-    status = new MojoResult(result[0]);
-    return result[1];
-  }
-
-  ByteData beginWrite(int bufferBytes, [int flags = 0]) {
-    if (handle == null) {
-      status = MojoResult.INVALID_ARGUMENT;
-      return null;
-    }
-
-    List result = _MojoDataPipeNatives.MojoBeginWriteData(
-        handle.h, bufferBytes, flags);
-    if (result == null) {
-      status = MojoResult.INVALID_ARGUMENT;
-      return null;
-    }
-
-    assert((result is List) && (result.length == 2));
-    status = new MojoResult(result[0]);
-    return result[1];
-  }
-
-  MojoResult endWrite(int bytesWritten) {
-    if (handle == null) {
-      status = MojoResult.INVALID_ARGUMENT;
-      return status;
-    }
-    int result = _MojoDataPipeNatives.MojoEndWriteData(handle.h, bytesWritten);
-    status = new MojoResult(result);
-    return status;
-  }
-}
-
-
-class MojoDataPipeConsumer {
-  static const int FLAG_NONE = 0;
-  static const int FLAG_ALL_OR_NONE = 1 << 0;
-  static const int FLAG_MAY_DISCARD = 1 << 1;
-  static const int FLAG_QUERY = 1 << 2;
-  static const int FLAG_PEEK = 1 << 3;
-
-  MojoHandle handle;
-  MojoResult status;
-  final int elementBytes;
-
-  MojoDataPipeConsumer(
-      this.handle, [this.status = MojoResult.OK, this.elementBytes = 1]);
-
-  int read(ByteData data, [int numBytes = -1, int flags = 0]) {
-    if (handle == null) {
-      status = MojoResult.INVALID_ARGUMENT;
-      return status;
-    }
-
-    int data_numBytes = (numBytes == -1) ? data.lengthInBytes : numBytes;
-    List result = _MojoDataPipeNatives.MojoReadData(
-        handle.h, data, data_numBytes, flags);
-    if (result == null) {
-      status = MojoResult.INVALID_ARGUMENT;
-      return status;
-    }
-    assert((result is List) && (result.length == 2));
-    status = new MojoResult(result[0]);
-    return result[1];
-  }
-
-  ByteData beginRead([int bufferBytes = 0, int flags = 0]) {
-    if (handle == null) {
-      status = MojoResult.INVALID_ARGUMENT;
-      return null;
-    }
-
-    List result = _MojoDataPipeNatives.MojoBeginReadData(
-        handle.h, bufferBytes, flags);
-    if (result == null) {
-      status = MojoResult.INVALID_ARGUMENT;
-      return null;
-    }
-
-    assert((result is List) && (result.length == 2));
-    status = new MojoResult(result[0]);
-    return result[1];
-  }
-
-  MojoResult endRead(int bytesRead) {
-    if (handle == null) {
-      status = MojoResult.INVALID_ARGUMENT;
-      return status;
-    }
-    int result = _MojoDataPipeNatives.MojoEndReadData(handle.h, bytesRead);
-    status = new MojoResult(result);
-    return status;
-  }
-
-  int query() => read(null, 0, FLAG_QUERY);
-}
-
-
-class MojoDataPipe {
-  static const int FLAG_NONE = 0;
-  static const int FLAG_MAY_DISCARD = 1 << 0;
-  static const int DEFAULT_ELEMENT_SIZE = 1;
-  static const int DEFAULT_CAPACITY = 0;
-
-  MojoDataPipeProducer producer;
-  MojoDataPipeConsumer consumer;
-  MojoResult status;
-
-  MojoDataPipe._internal() {
-    producer = null;
-    consumer = null;
-    status = MojoResult.OK;
-  }
-
-  factory MojoDataPipe([int elementBytes = DEFAULT_ELEMENT_SIZE,
-                        int capacityBytes = DEFAULT_CAPACITY,
-                        int flags = FLAG_NONE]) {
-    List result = _MojoDataPipeNatives.MojoCreateDataPipe(
-        elementBytes, capacityBytes, flags);
-    if (result == null) {
-      return null;
-    }
-    assert((result is List) && (result.length == 3));
-    MojoHandle producerHandle = new MojoHandle(result[1]);
-    MojoHandle consumerHandle = new MojoHandle(result[2]);
-    MojoDataPipe pipe = new MojoDataPipe._internal();
-    pipe.producer = new MojoDataPipeProducer(
-        producerHandle, new MojoResult(result[0]), elementBytes);
-    pipe.consumer = new MojoDataPipeConsumer(
-        consumerHandle, new MojoResult(result[0]), elementBytes);
-    pipe.status = new MojoResult(result[0]);
-    return pipe;
-  }
-}