Format all files under the sdk/lib directory.

sdk/lib/io/http_parser.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.
 
 part of dart.io;
 
 // Global constants.
 class _Const {
   // Bytes for "HTTP".
   static const HTTP = const [72, 84, 84, 80];
   // Bytes for "HTTP/1.".
   static const HTTP1DOT = const [72, 84, 84, 80, 47, 49, 46];
   // Bytes for "HTTP/1.0".
   static const HTTP10 = const [72, 84, 84, 80, 47, 49, 46, 48];
   // Bytes for "HTTP/1.1".
   static const HTTP11 = const [72, 84, 84, 80, 47, 49, 46, 49];
 
   static const bool T = true;
   static const bool F = false;
   // Loopup-map for the following characters: '()<>@,;:\\"/[]?={} \t'.
   static const SEPARATOR_MAP = const [
-      F,F,F,F,F,F,F,F,F,T,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,T,F,T,F,F,
-      F,F,F,T,T,F,F,T,F,F,T,F,F,F,F,F,F,F,F,F,F,T,T,T,T,T,T,T,F,F,F,F,F,F,F,F,F,
-      F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,T,T,T,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,
-      F,F,F,F,F,F,F,F,F,F,F,F,T,F,T,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,
-      F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,
-      F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,
-      F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F];
+    F, F, F, F, F, F, F, F, F, T, F, F, F, F, F, F, F, F, F, F, F, F, F, F, //
+    F, F, F, F, F, F, F, F, T, F, T, F, F, F, F, F, T, T, F, F, T, F, F, T, //
+    F, F, F, F, F, F, F, F, F, F, T, T, T, T, T, T, T, F, F, F, F, F, F, F, //
+    F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, T, T, T, F, F, //
+    F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, //
+    F, F, F, T, F, T, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, //
+    F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, //
+    F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, //
+    F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, //
+    F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, //
+    F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F
+  ];
 }
 
-
 // Frequently used character codes.
 class _CharCode {
   static const int HT = 9;
   static const int LF = 10;
   static const int CR = 13;
   static const int SP = 32;
   static const int AMPERSAND = 38;
   static const int COMMA = 44;
   static const int DASH = 45;
   static const int SLASH = 47;
   static const int ZERO = 48;
   static const int ONE = 49;
   static const int COLON = 58;
   static const int SEMI_COLON = 59;
   static const int EQUAL = 61;
 }
 
-
 // States of the HTTP parser state machine.
 class _State {
   static const int START = 0;
   static const int METHOD_OR_RESPONSE_HTTP_VERSION = 1;
   static const int RESPONSE_HTTP_VERSION = 2;
   static const int REQUEST_LINE_METHOD = 3;
   static const int REQUEST_LINE_URI = 4;
   static const int REQUEST_LINE_HTTP_VERSION = 5;
   static const int REQUEST_LINE_ENDING = 6;
   static const int RESPONSE_LINE_STATUS_CODE = 7;
@@ skipping 29 matching lines @@
   static const int HTTP11 = 2;
 }
 
 // States of the HTTP parser state machine.
 class _MessageType {
   static const int UNDETERMINED = 0;
   static const int REQUEST = 1;
   static const int RESPONSE = 0;
 }
 
-
 /**
  * The _HttpDetachedStreamSubscription takes a subscription and some extra data,
  * and makes it possible to "inject" the data in from of other data events
  * from the subscription.
  *
  * It does so by overriding pause/resume, so that once the
  * _HttpDetachedStreamSubscription is resumed, it'll deliver the data before
  * resuming the underlaying subscription.
  */
 class _HttpDetachedStreamSubscription implements StreamSubscription<List<int>> {
   StreamSubscription<List<int>> _subscription;
   List<int> _injectData;
   bool _isCanceled = false;
   int _pauseCount = 1;
   Function _userOnData;
   bool _scheduled = false;
 
-  _HttpDetachedStreamSubscription(this._subscription,
-                                  this._injectData,
-                                  this._userOnData);
+  _HttpDetachedStreamSubscription(
+      this._subscription, this._injectData, this._userOnData);
 
   bool get isPaused => _subscription.isPaused;
 
   Future<T> asFuture<T>([T futureValue]) =>
       _subscription.asFuture<T>(futureValue);
 
   Future cancel() {
     _isCanceled = true;
     _injectData = null;
     return _subscription.cancel();
@@ skipping 44 matching lines @@
       // To ensure that 'subscription.isPaused' is false, we resume the
       // subscription here. This is fine as potential events are delayed.
       _subscription.resume();
       if (_userOnData != null) {
         _userOnData(data);
       }
     });
   }
 }
 
-
 class _HttpDetachedIncoming extends Stream<List<int>> {
   final StreamSubscription<List<int>> subscription;
   final List<int> bufferedData;
 
   _HttpDetachedIncoming(this.subscription, this.bufferedData);
 
   StreamSubscription<List<int>> listen(void onData(List<int> event),
-                                       {Function onError,
-                                        void onDone(),
-                                        bool cancelOnError}) {
+      {Function onError, void onDone(), bool cancelOnError}) {
     if (subscription != null) {
       subscription
         ..onData(onData)
         ..onError(onError)
         ..onDone(onDone);
       if (bufferedData == null) {
         return subscription..resume();
       }
-      return new _HttpDetachedStreamSubscription(subscription,
-                                                 bufferedData,
-                                                 onData)
+      return new _HttpDetachedStreamSubscription(
+          subscription, bufferedData, onData)
         ..resume();
     } else {
       // TODO(26379): add test for this branch.
-      return new Stream<List<int>>.fromIterable([bufferedData])
-          .listen(onData,
-                  onError: onError,
-                  onDone: onDone,
-                  cancelOnError: cancelOnError);
+      return new Stream<List<int>>.fromIterable([bufferedData]).listen(onData,
+          onError: onError, onDone: onDone, cancelOnError: cancelOnError);
     }
   }
 }
 
-
 /**
  * HTTP parser which parses the data stream given to [consume].
  *
  * If an HTTP parser error occours, the parser will signal an error to either
  * the current _HttpIncoming or the _parser itself.
  *
  * The connection upgrades (e.g. switching from HTTP/1.1 to the
  * WebSocket protocol) is handled in a special way. If connection
  * upgrade is specified in the headers, then on the callback to
  * [:responseStart:] the [:upgrade:] property on the [:HttpParser:]
@@ skipping 68 matching lines @@
           _pauseStateChanged();
         },
         onCancel: () {
           if (_socketSubscription != null) {
             _socketSubscription.cancel();
           }
         });
     _reset();
   }
 
-
   StreamSubscription<_HttpIncoming> listen(void onData(_HttpIncoming event),
-                                           {Function onError,
-                                            void onDone(),
-                                            bool cancelOnError}) {
+      {Function onError, void onDone(), bool cancelOnError}) {
     return _controller.stream.listen(onData,
-                                     onError: onError,
-                                     onDone: onDone,
-                                     cancelOnError: cancelOnError);
+        onError: onError, onDone: onDone, cancelOnError: cancelOnError);
   }
 
   void listenToStream(Stream<List<int>> stream) {
     // Listen to the stream and handle data accordingly. When a
     // _HttpIncoming is created, _dataPause, _dataResume, _dataDone is
     // given to provide a way of controlling the parser.
     // TODO(ajohnsen): Remove _dataPause, _dataResume and _dataDone and clean up
     // how the _HttpIncoming signals the parser.
-    _socketSubscription = stream.listen(
-        _onData,
-        onError: _controller.addError,
-        onDone: _onDone);
+    _socketSubscription =
+        stream.listen(_onData, onError: _controller.addError, onDone: _onDone);
   }
 
   void _parse() {
     try {
       _doParse();
     } catch (e, s) {
       _state = _State.FAILURE;
       _reportError(e, s);
     }
   }
 
   // Process end of headers. Returns true if the parser should stop
   // parsing and return. This will be in case of either an upgrade
   // request or a request or response with an empty body.
   bool _headersEnd() {
     _headers._mutable = false;
 
     _transferLength = _headers.contentLength;
     // Ignore the Content-Length header if Transfer-Encoding
     // is chunked (RFC 2616 section 4.4)
     if (_chunked) _transferLength = -1;
 
     // If a request message has neither Content-Length nor
     // Transfer-Encoding the message must not have a body (RFC
     // 2616 section 4.3).
     if (_messageType == _MessageType.REQUEST &&
         _transferLength < 0 &&
-       _chunked == false) {
-       _transferLength = 0;
+        _chunked == false) {
+      _transferLength = 0;
     }
     if (_connectionUpgrade) {
       _state = _State.UPGRADED;
       _transferLength = 0;
     }
     _createIncoming(_transferLength);
     if (_requestParser) {
-      _incoming.method =
-          new String.fromCharCodes(_method);
+      _incoming.method = new String.fromCharCodes(_method);
       _incoming.uri =
-          Uri.parse(
-              new String.fromCharCodes(_uri_or_reason_phrase));
+          Uri.parse(new String.fromCharCodes(_uri_or_reason_phrase));
     } else {
       _incoming.statusCode = _statusCode;
-      _incoming.reasonPhrase =
-          new String.fromCharCodes(_uri_or_reason_phrase);
+      _incoming.reasonPhrase = new String.fromCharCodes(_uri_or_reason_phrase);
     }
     _method.clear();
     _uri_or_reason_phrase.clear();
     if (_connectionUpgrade) {
       _incoming.upgraded = true;
       _parserCalled = false;
       var tmp = _incoming;
       _closeIncoming();
       _controller.add(tmp);
       return true;
@@ skipping 33 matching lines @@
   void _doParse() {
     assert(!_parserCalled);
     _parserCalled = true;
     if (_state == _State.CLOSED) {
       throw new HttpException("Data on closed connection");
     }
     if (_state == _State.FAILURE) {
       throw new HttpException("Data on failed connection");
     }
     while (_buffer != null &&
-           _index < _buffer.length &&
-           _state != _State.FAILURE &&
-           _state != _State.UPGRADED) {
+        _index < _buffer.length &&
+        _state != _State.FAILURE &&
+        _state != _State.UPGRADED) {
       // Depending on _incoming, we either break on _bodyPaused or _paused.
       if ((_incoming != null && _bodyPaused) ||
           (_incoming == null && _paused)) {
         _parserCalled = false;
         return;
       }
       int byte = _buffer[_index++];
       switch (_state) {
         case _State.START:
           if (byte == _Const.HTTP[0]) {
@@ skipping 12 matching lines @@
             _state = _State.REQUEST_LINE_METHOD;
           }
           break;
 
         case _State.METHOD_OR_RESPONSE_HTTP_VERSION:
           if (_httpVersionIndex < _Const.HTTP.length &&
               byte == _Const.HTTP[_httpVersionIndex]) {
             // Continue parsing HTTP version.
             _httpVersionIndex++;
           } else if (_httpVersionIndex == _Const.HTTP.length &&
-                     byte == _CharCode.SLASH) {
+              byte == _CharCode.SLASH) {
             // HTTP/ parsed. As method is a token this cannot be a
             // method anymore.
             _httpVersionIndex++;
             if (_requestParser) {
               throw new HttpException("Invalid request line");
             }
             _state = _State.RESPONSE_HTTP_VERSION;
           } else {
             // Did not parse HTTP version. Expect method instead.
             for (int i = 0; i < _httpVersionIndex; i++) {
@@ skipping 11 matching lines @@
             }
           }
           break;
 
         case _State.RESPONSE_HTTP_VERSION:
           if (_httpVersionIndex < _Const.HTTP1DOT.length) {
             // Continue parsing HTTP version.
             _expect(byte, _Const.HTTP1DOT[_httpVersionIndex]);
             _httpVersionIndex++;
           } else if (_httpVersionIndex == _Const.HTTP1DOT.length &&
-                     byte == _CharCode.ONE) {
+              byte == _CharCode.ONE) {
             // HTTP/1.1 parsed.
             _httpVersion = _HttpVersion.HTTP11;
             _persistentConnection = true;
             _httpVersionIndex++;
           } else if (_httpVersionIndex == _Const.HTTP1DOT.length &&
-                     byte == _CharCode.ZERO) {
+              byte == _CharCode.ZERO) {
             // HTTP/1.0 parsed.
             _httpVersion = _HttpVersion.HTTP10;
             _persistentConnection = false;
             _httpVersionIndex++;
           } else if (_httpVersionIndex == _Const.HTTP1DOT.length + 1) {
             _expect(byte, _CharCode.SP);
             // HTTP version parsed.
             _state = _State.RESPONSE_LINE_STATUS_CODE;
           } else {
             throw new HttpException("Invalid response line");
@@ skipping 91 matching lines @@
           }
           break;
 
         case _State.RESPONSE_LINE_ENDING:
           _expect(byte, _CharCode.LF);
           _messageType == _MessageType.RESPONSE;
           if (_statusCode < 100 || _statusCode > 599) {
             throw new HttpException("Invalid response status code");
           } else {
             // Check whether this response will never have a body.
-            if (_statusCode <= 199 || _statusCode == 204 ||
+            if (_statusCode <= 199 ||
+                _statusCode == 204 ||
                 _statusCode == 304) {
               _noMessageBody = true;
             }
           }
           _state = _State.HEADER_START;
           break;
 
         case _State.HEADER_START:
           _headers = new _HttpHeaders(version);
           if (byte == _CharCode.CR) {
             _state = _State.HEADER_ENDING;
           } else if (byte == _CharCode.LF) {
             _state = _State.HEADER_ENDING;
-            _index--;  // Make the new state see the LF again.
+            _index--; // Make the new state see the LF again.
           } else {
             // Start of new header field.
             _headerField.add(_toLowerCaseByte(byte));
             _state = _State.HEADER_FIELD;
           }
           break;
 
         case _State.HEADER_FIELD:
           if (byte == _CharCode.COLON) {
             _state = _State.HEADER_VALUE_START;
@@ skipping 38 matching lines @@
           } else {
             String headerField = new String.fromCharCodes(_headerField);
             String headerValue = new String.fromCharCodes(_headerValue);
             if (headerField == "transfer-encoding" &&
                 _caseInsensitiveCompare("chunked".codeUnits, _headerValue)) {
               _chunked = true;
             }
             if (headerField == "connection") {
               List<String> tokens = _tokenizeFieldValue(headerValue);
               for (int i = 0; i < tokens.length; i++) {
-                if (_caseInsensitiveCompare("upgrade".codeUnits,
-                                            tokens[i].codeUnits)) {
+                if (_caseInsensitiveCompare(
+                    "upgrade".codeUnits, tokens[i].codeUnits)) {
                   _connectionUpgrade = true;
                 }
                 _headers._add(headerField, tokens[i]);
               }
             } else {
               _headers._add(headerField, headerValue);
             }
             _headerField.clear();
             _headerValue.clear();
 
             if (byte == _CharCode.CR) {
               _state = _State.HEADER_ENDING;
             } else if (byte == _CharCode.LF) {
               _state = _State.HEADER_ENDING;
-              _index--;  // Make the new state see the LF again.
+              _index--; // Make the new state see the LF again.
             } else {
               // Start of new header field.
               _headerField.add(_toLowerCaseByte(byte));
               _state = _State.HEADER_FIELD;
             }
           }
           break;
 
         case _State.HEADER_ENDING:
           _expect(byte, _CharCode.LF);
@@ skipping 54 matching lines @@
         case _State.BODY:
           // The body is not handled one byte at a time but in blocks.
           _index--;
           int dataAvailable = _buffer.length - _index;
           if (_remainingContent >= 0 && dataAvailable > _remainingContent) {
             dataAvailable = _remainingContent;
           }
           // Always present the data as a view. This way we can handle all
           // cases like this, and the user will not experince different data
           // typed (which could lead to polymorphic user code).
-          List<int> data = new Uint8List.view(_buffer.buffer,
-                                              _buffer.offsetInBytes + _index,
-                                              dataAvailable);
+          List<int> data = new Uint8List.view(
+              _buffer.buffer, _buffer.offsetInBytes + _index, dataAvailable);
           _bodyController.add(data);
           if (_remainingContent != -1) {
             _remainingContent -= data.length;
           }
           _index += data.length;
           if (_remainingContent == 0) {
             if (!_chunked) {
               _reset();
               _closeIncoming();
             } else {
@@ skipping 36 matching lines @@
   void _onDone() {
     // onDone cancles the subscription.
     _socketSubscription = null;
     if (_state == _State.CLOSED || _state == _State.FAILURE) return;
 
     if (_incoming != null) {
       if (_state != _State.UPGRADED &&
           !(_state == _State.START && !_requestParser) &&
           !(_state == _State.BODY && !_chunked && _transferLength == -1)) {
         _bodyController.addError(
-              new HttpException("Connection closed while receiving data"));
+            new HttpException("Connection closed while receiving data"));
       }
       _closeIncoming(true);
       _controller.close();
       return;
     }
     // If the connection is idle the HTTP stream is closed.
     if (_state == _State.START) {
       if (!_requestParser) {
         _reportError(new HttpException(
-                    "Connection closed before full header was received"));
+            "Connection closed before full header was received"));
       }
       _controller.close();
       return;
     }
 
     if (_state == _State.UPGRADED) {
       _controller.close();
       return;
     }
 
     if (_state < _State.FIRST_BODY_STATE) {
       _state = _State.FAILURE;
       // Report the error through the error callback if any. Otherwise
       // throw the error.
       _reportError(new HttpException(
-                  "Connection closed before full header was received"));
+          "Connection closed before full header was received"));
       _controller.close();
       return;
     }
 
     if (!_chunked && _transferLength == -1) {
       _state = _State.CLOSED;
     } else {
       _state = _State.FAILURE;
       // Report the error through the error callback if any. Otherwise
       // throw the error.
-      _reportError(new HttpException(
-                  "Connection closed before full body was received"));
+      _reportError(
+          new HttpException("Connection closed before full body was received"));
     }
     _controller.close();
   }
 
   String get version {
     switch (_httpVersion) {
       case _HttpVersion.HTTP10:
         return "1.0";
       case _HttpVersion.HTTP11:
         return "1.1";
     }
     return null;
   }
 
   int get messageType => _messageType;
   int get transferLength => _transferLength;
   bool get upgrade => _connectionUpgrade && _state == _State.UPGRADED;
   bool get persistentConnection => _persistentConnection;
 
   void set isHead(bool value) {
     if (value) _noMessageBody = true;
   }
 
   _HttpDetachedIncoming detachIncoming() {
     // Simulate detached by marking as upgraded.
     _state = _State.UPGRADED;
-    return new _HttpDetachedIncoming(_socketSubscription,
-                                     readUnparsedData());
+    return new _HttpDetachedIncoming(_socketSubscription, readUnparsedData());
   }
 
   List<int> readUnparsedData() {
     if (_buffer == null) return null;
     if (_index == _buffer.length) return null;
     var result = _buffer.sublist(_index);
     _releaseBuffer();
     return result;
   }
 
@@ skipping 24 matching lines @@
   void _releaseBuffer() {
     _buffer = null;
     _index = null;
   }
 
   static bool _isTokenChar(int byte) {
     return byte > 31 && byte < 128 && !_Const.SEPARATOR_MAP[byte];
   }
 
   static bool _isValueChar(int byte) {
-    return (byte > 31 && byte < 128) || (byte == _CharCode.SP) ||
+    return (byte > 31 && byte < 128) ||
+        (byte == _CharCode.SP) ||
         (byte == _CharCode.HT);
   }
 
   static List<String> _tokenizeFieldValue(String headerValue) {
     List<String> tokens = new List<String>();
     int start = 0;
     int index = 0;
     while (index < headerValue.length) {
       if (headerValue[index] == ",") {
         tokens.add(headerValue.substring(start, index));
@@ skipping 26 matching lines @@
   }
 
   int _expect(int val1, int val2) {
     if (val1 != val2) {
       throw new HttpException("Failed to parse HTTP");
     }
   }
 
   int _expectHexDigit(int byte) {
     if (0x30 <= byte && byte <= 0x39) {
-      return byte - 0x30;  // 0 - 9
+      return byte - 0x30; // 0 - 9
     } else if (0x41 <= byte && byte <= 0x46) {
-      return byte - 0x41 + 10;  // A - F
+      return byte - 0x41 + 10; // A - F
     } else if (0x61 <= byte && byte <= 0x66) {
-      return byte - 0x61 + 10;  // a - f
+      return byte - 0x61 + 10; // a - f
     } else {
       throw new HttpException("Failed to parse HTTP");
     }
   }
 
   void _createIncoming(int transferLength) {
     assert(_incoming == null);
     assert(_bodyController == null);
     assert(!_bodyPaused);
     var incoming;
@@ skipping 18 matching lines @@
           _pauseStateChanged();
         },
         onCancel: () {
           if (incoming != _incoming) return;
           if (_socketSubscription != null) {
             _socketSubscription.cancel();
           }
           _closeIncoming(true);
           _controller.close();
         });
-    incoming = _incoming = new _HttpIncoming(
-        _headers, transferLength, _bodyController.stream);
+    incoming = _incoming =
+        new _HttpIncoming(_headers, transferLength, _bodyController.stream);
     _bodyPaused = true;
     _pauseStateChanged();
   }
 
   void _closeIncoming([bool closing = false]) {
     // Ignore multiple close (can happen in re-entrance).
     if (_incoming == null) return;
     var tmp = _incoming;
     tmp.close(closing);
     _incoming = null;
@@ skipping 17 matching lines @@
     }
   }
 
   void _reportError(error, [stackTrace]) {
     if (_socketSubscription != null) _socketSubscription.cancel();
     _state = _State.FAILURE;
     _controller.addError(error, stackTrace);
     _controller.close();
   }
 }