Switch from interfaces to abstract classes in dart:io.

runtime/bin/http.dart

 // Copyright (c) 2012, 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.
 
 /**
  * HTTP status codes.
  */
-interface HttpStatus {
+abstract class HttpStatus {
   static const int CONTINUE = 100;
   static const int SWITCHING_PROTOCOLS = 101;
   static const int OK = 200;
   static const int CREATED = 201;
   static const int ACCEPTED = 202;
   static const int NON_AUTHORITATIVE_INFORMATION = 203;
   static const int NO_CONTENT = 204;
   static const int RESET_CONTENT = 205;
   static const int PARTIAL_CONTENT = 206;
   static const int MULTIPLE_CHOICES = 300;
@@ skipping 29 matching lines @@
   static const int GATEWAY_TIMEOUT = 504;
   static const int HTTP_VERSION_NOT_SUPPORTED = 505;
   // Client generated status code.
   static const int NETWORK_CONNECT_TIMEOUT_ERROR = 599;
 }
 
 
 /**
  * HTTP server.
  */
-interface HttpServer default _HttpServer {
-  HttpServer();
+abstract class HttpServer {
+  factory HttpServer() => new _HttpServer();
 
   /**
    * Start listening for HTTP requests on the specified [host] and
    * [port]. If a [port] of 0 is specified the server will choose an
    * ephemeral port. The optional argument [backlog] can be used to
    * specify the listen backlog for the underlying OS listen
    * setup. See [addRequestHandler] and [defaultRequestHandler] for
    * information on how incoming HTTP requests are handled.
    */
   void listen(String host, int port, [int backlog]);
@@ skipping 45 matching lines @@
 
 
 /**
  * Access to the HTTP headers for requests and responses. In some
  * situations the headers will be imutable and the mutating methods
  * will then throw exceptions.
  *
  * For all operation on HTTP headers the header name is
  * case-insensitive.
  */
-interface HttpHeaders default _HttpHeaders {
+abstract class HttpHeaders {
   static const ACCEPT = "Accept";
   static const ACCEPT_CHARSET = "Accept-Charset";
   static const ACCEPT_ENCODING = "Accept-Encoding";
   static const ACCEPT_LANGUAGE = "Accept-Language";
   static const ACCEPT_RANGES = "Accept-Ranges";
   static const AGE = "Age";
   static const ALLOW = "Allow";
   static const AUTHORIZATION = "Authorization";
   static const CACHE_CONTROL = "Cache-Control";
   static const CONNECTION = "Connection";
@@ skipping 211 matching lines @@
  *
  * To parse the header values use the [:fromString:] constructor.
  *
  *     HttpRequest request = ...;
  *     List<String> values = request.headers[HttpHeaders.ACCEPT];
  *     values.forEach((value) {
  *       HeaderValue v = new HeaderValue.fromString(value);
  *       // Use v.value and v.parameters
  *     });
  */
-interface HeaderValue default _HeaderValue {
+abstract class HeaderValue {
   /**
    * Creates a new header value object setting the value part.
    */
-  HeaderValue([String value]);
+  factory HeaderValue([String value = ""]) => new _HeaderValue(value);
 
   /**
    * Creates a new header value object from parsing a header value
    * string with both value and optional parameters.
    */
-  HeaderValue.fromString(String value);
+  factory HeaderValue.fromString(String value) {
+    return new _HeaderValue.fromString(value);
+  }
 
   /**
    * Gets and sets the header value.
    */
   String value;
 
   /**
    * Gets the map of parameters.
    */
   Map<String, String> get parameters;
 
   /**
    * Returns the formatted string representation in the form:
    *
    *     value; parameter1=value1; parameter2=value2
    */
   String toString();
 }
 
 
 /**
  * Representation of a content type.
  */
-interface ContentType extends HeaderValue default _ContentType {
+abstract class ContentType implements HeaderValue {
   /**
    * Creates a new content type object setting the primary type and
-   * sub type. If either is not passed their values will be the empty
-   * string.
+   * sub type.
    */
-  ContentType([String primaryType, String subType]);
+  factory ContentType([String primaryType = "", String subType = ""]) {
+    return new _ContentType(primaryType, subType);
+  }
 
   /**
    * Creates a new content type object from parsing a Content-Type
    * header value. As primary type, sub type and parameter names and
    * values are not case sensitive all these values will be converted
    * to lower case. Parsing this string
    *
    *     text/html; charset=utf-8
    *
    * will create a content type object with primary type [:text:], sub
    * type [:html:] and parameter [:charset:] with value [:utf-8:].
    */
-  ContentType.fromString(String value);
+  factory ContentType.fromString(String value) {
+    return new _ContentType.fromString(value);
+  }
 
   /**
    * Gets and sets the content type in the form "primaryType/subType".
    */
   String value;
 
   /**
    * Gets and sets the primary type.
    */
   String primaryType;
@@ skipping 10 matching lines @@
 }
 
 
 /**
  * Representation of a cookie. For cookies received by the server as
  * Cookie header values only [:name:] and [:value:] fields will be
  * set. When building a cookie for the Set-Cookie header in the server
  * and when receiving cookies in the client as Set-Cookie headers all
  * fields can be used.
  */
-interface Cookie default _Cookie {
+abstract class Cookie {
   /**
    * Creates a new cookie optionally setting the name and value.
    */
-  Cookie([String name, String value]);
+  factory Cookie([String name, String value]) => new _Cookie(name, value);
 
   /**
    * Creates a new cookie by parsing a header value from a Set-Cookie
    * header.
    */
-  Cookie.fromSetCookieValue(String value);
+  factory Cookie.fromSetCookieValue(String value) {
+    return new _Cookie.fromSetCookieValue(value);
+  }
 
   /**
    * Gets and sets the name.
    */
   String name;
 
   /**
    * Gets and sets the value.
    */
   String value;
@@ skipping 34 matching lines @@
    * string representation can be used for for setting the Cookie or
    * Set-Cookie headers
    */
   String toString();
 }
 
 
 /**
  * Http request delivered to the HTTP server callback.
  */
-interface HttpRequest default _HttpRequest {
+abstract class HttpRequest {
   /**
    * Returns the content length of the request body. If the size of
    * the request body is not known in advance this -1.
    */
   int get contentLength;
 
   /**
    * Returns the persistent connection state signaled by the client.
    */
   bool get persistentConnection;
@@ skipping 49 matching lines @@
    * Get information about the client connection. Returns [null] if the socket
    * isn't available.
    */
   HttpConnectionInfo get connectionInfo;
 }
 
 
 /**
  * HTTP response to be send back to the client.
  */
-interface HttpResponse default _HttpResponse {
+abstract class HttpResponse {
   /**
    * Gets and sets the content length of the response. If the size of
    * the response is not known in advance set the content length to
    * -1 - which is also the default if not set.
    */
   int contentLength;
 
   /**
    * Gets and sets the status code. Any integer value is accepted, but
    * for the official HTTP status codes use the fields from
@@ skipping 55 matching lines @@
 
 /**
  * HTTP client factory. The [HttpClient] handles all the sockets associated
  * with the [HttpClientConnection]s and when the endpoint supports it, it will
  * try to reuse opened sockets for several requests to support HTTP 1.1
  * persistent connections. This means that sockets will be kept open for some
  * time after a requests have completed, unless HTTP procedures indicate that it
  * must be closed as part of completing the request. Use [:HttpClient.shutdown:]
  * to force close the idle sockets.
  */
-interface HttpClient default _HttpClient {
+abstract class HttpClient {
   static const int DEFAULT_HTTP_PORT = 80;
 
-  HttpClient();
+  factory HttpClient() => new _HttpClient();
 
   /**
    * Opens a HTTP connection. The returned [HttpClientConnection] is
    * used to register callbacks for asynchronous events on the HTTP
    * connection. The "Host" header for the request will be set to the
    * value [host]:[port]. This can be overridden through the
    * HttpClientRequest interface before the request is sent. NOTE if
    * [host] is an IP address this will still be set in the "Host"
    * header.
    */
@@ skipping 44 matching lines @@
 /**
  * A [HttpClientConnection] is returned by all [HttpClient] methods
  * that initiate a connection to an HTTP server. The handlers will be
  * called as the connection state progresses.
  *
  * The setting of all handlers is optional. If [onRequest] is not set
  * the request will be send without any additional headers and an
  * empty body. If [onResponse] is not set the response will be read
  * and discarded.
  */
-interface HttpClientConnection {
+abstract class HttpClientConnection {
   /**
    * Sets the handler that is called when the connection is established.
    */
   void set onRequest(void callback(HttpClientRequest request));
 
   /**
    * Sets callback to be called when the request has been send and
    * the response is ready for processing. The callback is called when
    * all headers of the response are received and data is ready to be
    * received.
@@ skipping 48 matching lines @@
    * Get information about the client connection. Returns [null] if the socket
    * isn't available.
    */
   HttpConnectionInfo get connectionInfo;
 }
 
 
 /**
  * HTTP request for a client connection.
  */
-interface HttpClientRequest default _HttpClientRequest {
+abstract class HttpClientRequest {
   /**
    * Gets and sets the content length of the request. If the size of
    * the request is not known in advance set content length to -1,
    * which is also the default.
    */
   int contentLength;
 
   /**
    * Returns the request headers.
    */
@@ skipping 19 matching lines @@
    * send. Calling any methods that will change the header after
    * having retrieved the output stream will throw an exception.
    */
   OutputStream get outputStream;
 }
 
 
 /**
  * HTTP response for a client connection.
  */
-interface HttpClientResponse default _HttpClientResponse {
+abstract class HttpClientResponse {
   /**
    * Returns the status code.
    */
   int get statusCode;
 
   /**
    * Returns the reason phrase associated with the status code.
    */
   String get reasonPhrase;
 
@@ skipping 29 matching lines @@
   /**
    * Returns the input stream for the response. This is used to read
    * the response data.
    */
   InputStream get inputStream;
 }
 
 /**
  * Connection information.
  */
-interface HttpConnectionInfo {
+abstract class HttpConnectionInfo {
   String get remoteHost;
   int get remotePort;
   int get localPort;
 }
 
 
 /**
  * Redirect information.
  */
-interface RedirectInfo {
+abstract class RedirectInfo {
   /**
    * Returns the status code used for the redirect.
    */
   int get statusCode;
 
   /**
    * Returns the method used for the redirect.
    */
   String get method;
 
   /**
    * Returns the location for the redirect.
    */
   Uri get location;
 }
 
 
 /**
  * When detaching a socket from either the [:HttpServer:] or the
  * [:HttpClient:] due to a HTTP connection upgrade there might be
  * unparsed data already read from the socket. This unparsed data
  * together with the detached socket is returned in an instance of
  * this class.
  */
-interface DetachedSocket default _DetachedSocket {
+abstract class DetachedSocket {
   Socket get socket;
   List<int> get unparsedData;
 }
 
 
 class HttpException implements Exception {
   const HttpException([String this.message = ""]);
   String toString() => "HttpException: $message";
   final String message;
 }
 
 
 class RedirectException extends HttpException {
   const RedirectException(String message,
                           List<RedirectInfo> this.redirects) : super(message);
   final List<RedirectInfo> redirects;
 }
 
 
 class RedirectLimitExceededException extends RedirectException {
   const RedirectLimitExceededException(List<RedirectInfo> redirects)
       : super("Redirect limit exceeded", redirects);
 }
 
 
 class RedirectLoopException extends RedirectException {
   const RedirectLoopException(List<RedirectInfo> redirects)
       : super("Redirect loop detected", redirects);
 }