1diff --git a/buffered.rs b/buffered.rs 2index cd7a50d..efa81b6 100644 3--- a/buffered.rs 4+++ b/buffered.rs 5@@ -10,13 +10,13 @@ 6 7 //! Buffering wrappers for I/O traits 8 9+use core::prelude::v1::*; 10 use io::prelude::*; 11 12-use cmp; 13-use error; 14-use fmt; 15+use core::cmp; 16+use core::fmt; 17 use io::{self, DEFAULT_BUF_SIZE, Error, ErrorKind, SeekFrom}; 18-use memchr; 19+use io::memchr; 20 21 /// The `BufReader` struct adds buffering to any reader. 22 /// 23@@ -46,7 +46,6 @@ use memchr; 24 /// # Ok(()) 25 /// # } 26 /// ``` 27-#[stable(feature = "rust1", since = "1.0.0")] 28 pub struct BufReader<R> { 29 inner: R, 30 buf: Box<[u8]>, 31@@ -69,7 +68,6 @@ impl<R: Read> BufReader<R> { 32 /// # Ok(()) 33 /// # } 34 /// ``` 35- #[stable(feature = "rust1", since = "1.0.0")] 36 pub fn new(inner: R) -> BufReader<R> { 37 BufReader::with_capacity(DEFAULT_BUF_SIZE, inner) 38 } 39@@ -90,7 +88,6 @@ impl<R: Read> BufReader<R> { 40 /// # Ok(()) 41 /// # } 42 /// ``` 43- #[stable(feature = "rust1", since = "1.0.0")] 44 pub fn with_capacity(cap: usize, inner: R) -> BufReader<R> { 45 BufReader { 46 inner: inner, 47@@ -118,7 +115,6 @@ impl<R: Read> BufReader<R> { 48 /// # Ok(()) 49 /// # } 50 /// ``` 51- #[stable(feature = "rust1", since = "1.0.0")] 52 pub fn get_ref(&self) -> &R { &self.inner } 53 54 /// Gets a mutable reference to the underlying reader. 55@@ -139,7 +135,6 @@ impl<R: Read> BufReader<R> { 56 /// # Ok(()) 57 /// # } 58 /// ``` 59- #[stable(feature = "rust1", since = "1.0.0")] 60 pub fn get_mut(&mut self) -> &mut R { &mut self.inner } 61 62 /// Unwraps this `BufReader`, returning the underlying reader. 63@@ -160,11 +155,9 @@ impl<R: Read> BufReader<R> { 64 /// # Ok(()) 65 /// # } 66 /// ``` 67- #[stable(feature = "rust1", since = "1.0.0")] 68 pub fn into_inner(self) -> R { self.inner } 69 } 70 71-#[stable(feature = "rust1", since = "1.0.0")] 72 impl<R: Read> Read for BufReader<R> { 73 fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> { 74 // If we don't have any buffered data and we're doing a massive read 75@@ -182,7 +175,6 @@ impl<R: Read> Read for BufReader<R> { 76 } 77 } 78 79-#[stable(feature = "rust1", since = "1.0.0")] 80 impl<R: Read> BufRead for BufReader<R> { 81 fn fill_buf(&mut self) -> io::Result<&[u8]> { 82 // If we've reached the end of our internal buffer then we need to fetch 83@@ -202,7 +194,6 @@ impl<R: Read> BufRead for BufReader<R> { 84 } 85 } 86 87-#[stable(feature = "rust1", since = "1.0.0")] 88 impl<R> fmt::Debug for BufReader<R> where R: fmt::Debug { 89 fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { 90 fmt.debug_struct("BufReader") 91@@ -212,7 +203,6 @@ impl<R> fmt::Debug for BufReader<R> where R: fmt::Debug { 92 } 93 } 94 95-#[stable(feature = "rust1", since = "1.0.0")] 96 impl<R: Seek> Seek for BufReader<R> { 97 /// Seek to an offset, in bytes, in the underlying reader. 98 /// 99@@ -305,7 +295,6 @@ impl<R: Seek> Seek for BufReader<R> { 100 /// [`Write`]: ../../std/io/trait.Write.html 101 /// [`write`]: ../../std/net/struct.TcpStream.html#method.write 102 /// [`TcpStream`]: ../../std/net/struct.TcpStream.html 103-#[stable(feature = "rust1", since = "1.0.0")] 104 pub struct BufWriter<W: Write> { 105 inner: Option<W>, 106 buf: Vec<u8>, 107@@ -340,7 +329,6 @@ pub struct BufWriter<W: Write> { 108 /// }; 109 /// ``` 110 #[derive(Debug)] 111-#[stable(feature = "rust1", since = "1.0.0")] 112 pub struct IntoInnerError<W>(W, Error); 113 114 impl<W: Write> BufWriter<W> { 115@@ -354,7 +342,6 @@ impl<W: Write> BufWriter<W> { 116 /// 117 /// let mut buffer = BufWriter::new(TcpStream::connect("127.0.0.1:34254").unwrap()); 118 /// ``` 119- #[stable(feature = "rust1", since = "1.0.0")] 120 pub fn new(inner: W) -> BufWriter<W> { 121 BufWriter::with_capacity(DEFAULT_BUF_SIZE, inner) 122 } 123@@ -372,7 +359,6 @@ impl<W: Write> BufWriter<W> { 124 /// let stream = TcpStream::connect("127.0.0.1:34254").unwrap(); 125 /// let mut buffer = BufWriter::with_capacity(100, stream); 126 /// ``` 127- #[stable(feature = "rust1", since = "1.0.0")] 128 pub fn with_capacity(cap: usize, inner: W) -> BufWriter<W> { 129 BufWriter { 130 inner: Some(inner), 131@@ -421,7 +407,6 @@ impl<W: Write> BufWriter<W> { 132 /// // we can use reference just like buffer 133 /// let reference = buffer.get_ref(); 134 /// ``` 135- #[stable(feature = "rust1", since = "1.0.0")] 136 pub fn get_ref(&self) -> &W { self.inner.as_ref().unwrap() } 137 138 /// Gets a mutable reference to the underlying writer. 139@@ -439,7 +424,6 @@ impl<W: Write> BufWriter<W> { 140 /// // we can use reference just like buffer 141 /// let reference = buffer.get_mut(); 142 /// ``` 143- #[stable(feature = "rust1", since = "1.0.0")] 144 pub fn get_mut(&mut self) -> &mut W { self.inner.as_mut().unwrap() } 145 146 /// Unwraps this `BufWriter`, returning the underlying writer. 147@@ -457,7 +441,6 @@ impl<W: Write> BufWriter<W> { 148 /// // unwrap the TcpStream and flush the buffer 149 /// let stream = buffer.into_inner().unwrap(); 150 /// ``` 151- #[stable(feature = "rust1", since = "1.0.0")] 152 pub fn into_inner(mut self) -> Result<W, IntoInnerError<BufWriter<W>>> { 153 match self.flush_buf() { 154 Err(e) => Err(IntoInnerError(self, e)), 155@@ -466,7 +449,6 @@ impl<W: Write> BufWriter<W> { 156 } 157 } 158 159-#[stable(feature = "rust1", since = "1.0.0")] 160 impl<W: Write> Write for BufWriter<W> { 161 fn write(&mut self, buf: &[u8]) -> io::Result<usize> { 162 if self.buf.len() + buf.len() > self.buf.capacity() { 163@@ -486,7 +468,6 @@ impl<W: Write> Write for BufWriter<W> { 164 } 165 } 166 167-#[stable(feature = "rust1", since = "1.0.0")] 168 impl<W: Write> fmt::Debug for BufWriter<W> where W: fmt::Debug { 169 fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { 170 fmt.debug_struct("BufWriter") 171@@ -496,7 +477,6 @@ impl<W: Write> fmt::Debug for BufWriter<W> where W: fmt::Debug { 172 } 173 } 174 175-#[stable(feature = "rust1", since = "1.0.0")] 176 impl<W: Write + Seek> Seek for BufWriter<W> { 177 /// Seek to the offset, in bytes, in the underlying writer. 178 /// 179@@ -506,7 +486,6 @@ impl<W: Write + Seek> Seek for BufWriter<W> { 180 } 181 } 182 183-#[stable(feature = "rust1", since = "1.0.0")] 184 impl<W: Write> Drop for BufWriter<W> { 185 fn drop(&mut self) { 186 if self.inner.is_some() && !self.panicked { 187@@ -545,7 +524,6 @@ impl<W> IntoInnerError<W> { 188 /// } 189 /// }; 190 /// ``` 191- #[stable(feature = "rust1", since = "1.0.0")] 192 pub fn error(&self) -> &Error { &self.1 } 193 194 /// Returns the buffered writer instance which generated the error. 195@@ -578,23 +556,13 @@ impl<W> IntoInnerError<W> { 196 /// } 197 /// }; 198 /// ``` 199- #[stable(feature = "rust1", since = "1.0.0")] 200 pub fn into_inner(self) -> W { self.0 } 201 } 202 203-#[stable(feature = "rust1", since = "1.0.0")] 204 impl<W> From<IntoInnerError<W>> for Error { 205 fn from(iie: IntoInnerError<W>) -> Error { iie.1 } 206 } 207 208-#[stable(feature = "rust1", since = "1.0.0")] 209-impl<W: Send + fmt::Debug> error::Error for IntoInnerError<W> { 210- fn description(&self) -> &str { 211- error::Error::description(self.error()) 212- } 213-} 214- 215-#[stable(feature = "rust1", since = "1.0.0")] 216 impl<W> fmt::Display for IntoInnerError<W> { 217 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { 218 self.error().fmt(f) 219@@ -649,7 +617,6 @@ impl<W> fmt::Display for IntoInnerError<W> { 220 /// # Ok(()) 221 /// # } 222 /// ``` 223-#[stable(feature = "rust1", since = "1.0.0")] 224 pub struct LineWriter<W: Write> { 225 inner: BufWriter<W>, 226 } 227@@ -669,7 +636,6 @@ impl<W: Write> LineWriter<W> { 228 /// # Ok(()) 229 /// # } 230 /// ``` 231- #[stable(feature = "rust1", since = "1.0.0")] 232 pub fn new(inner: W) -> LineWriter<W> { 233 // Lines typically aren't that long, don't use a giant buffer 234 LineWriter::with_capacity(1024, inner) 235@@ -690,7 +656,6 @@ impl<W: Write> LineWriter<W> { 236 /// # Ok(()) 237 /// # } 238 /// ``` 239- #[stable(feature = "rust1", since = "1.0.0")] 240 pub fn with_capacity(cap: usize, inner: W) -> LineWriter<W> { 241 LineWriter { inner: BufWriter::with_capacity(cap, inner) } 242 } 243@@ -711,7 +676,6 @@ impl<W: Write> LineWriter<W> { 244 /// # Ok(()) 245 /// # } 246 /// ``` 247- #[stable(feature = "rust1", since = "1.0.0")] 248 pub fn get_ref(&self) -> &W { self.inner.get_ref() } 249 250 /// Gets a mutable reference to the underlying writer. 251@@ -734,7 +698,6 @@ impl<W: Write> LineWriter<W> { 252 /// # Ok(()) 253 /// # } 254 /// ``` 255- #[stable(feature = "rust1", since = "1.0.0")] 256 pub fn get_mut(&mut self) -> &mut W { self.inner.get_mut() } 257 258 /// Unwraps this `LineWriter`, returning the underlying writer. 259@@ -756,7 +719,6 @@ impl<W: Write> LineWriter<W> { 260 /// # Ok(()) 261 /// # } 262 /// ``` 263- #[stable(feature = "rust1", since = "1.0.0")] 264 pub fn into_inner(self) -> Result<W, IntoInnerError<LineWriter<W>>> { 265 self.inner.into_inner().map_err(|IntoInnerError(buf, e)| { 266 IntoInnerError(LineWriter { inner: buf }, e) 267@@ -764,7 +726,6 @@ impl<W: Write> LineWriter<W> { 268 } 269 } 270 271-#[stable(feature = "rust1", since = "1.0.0")] 272 impl<W: Write> Write for LineWriter<W> { 273 fn write(&mut self, buf: &[u8]) -> io::Result<usize> { 274 match memchr::memrchr(b'\n', buf) { 275@@ -783,7 +744,6 @@ impl<W: Write> Write for LineWriter<W> { 276 fn flush(&mut self) -> io::Result<()> { self.inner.flush() } 277 } 278 279-#[stable(feature = "rust1", since = "1.0.0")] 280 impl<W: Write> fmt::Debug for LineWriter<W> where W: fmt::Debug { 281 fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { 282 fmt.debug_struct("LineWriter") 283diff --git a/cursor.rs b/cursor.rs 284index 1b50233..6a7b44f 100644 285--- a/cursor.rs 286+++ b/cursor.rs 287@@ -8,10 +8,11 @@ 288 // option. This file may not be copied, modified, or distributed 289 // except according to those terms. 290 291+use core::prelude::v1::*; 292 use io::prelude::*; 293 294-use core::convert::TryInto; 295-use cmp; 296+#[cfg(feature = "collections")] use core::convert::TryInto; 297+use core::cmp; 298 use io::{self, SeekFrom, Error, ErrorKind}; 299 300 /// A `Cursor` wraps another type and provides it with a 301@@ -79,7 +80,6 @@ use io::{self, SeekFrom, Error, ErrorKind}; 302 /// assert_eq!(&buff.get_ref()[5..15], &[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]); 303 /// } 304 /// ``` 305-#[stable(feature = "rust1", since = "1.0.0")] 306 #[derive(Clone, Debug)] 307 pub struct Cursor<T> { 308 inner: T, 309@@ -98,7 +98,6 @@ impl<T> Cursor<T> { 310 /// # fn force_inference(_: &Cursor<Vec<u8>>) {} 311 /// # force_inference(&buff); 312 /// ``` 313- #[stable(feature = "rust1", since = "1.0.0")] 314 pub fn new(inner: T) -> Cursor<T> { 315 Cursor { pos: 0, inner: inner } 316 } 317@@ -116,7 +115,6 @@ impl<T> Cursor<T> { 318 /// 319 /// let vec = buff.into_inner(); 320 /// ``` 321- #[stable(feature = "rust1", since = "1.0.0")] 322 pub fn into_inner(self) -> T { self.inner } 323 324 /// Gets a reference to the underlying value in this cursor. 325@@ -132,7 +130,6 @@ impl<T> Cursor<T> { 326 /// 327 /// let reference = buff.get_ref(); 328 /// ``` 329- #[stable(feature = "rust1", since = "1.0.0")] 330 pub fn get_ref(&self) -> &T { &self.inner } 331 332 /// Gets a mutable reference to the underlying value in this cursor. 333@@ -151,7 +148,6 @@ impl<T> Cursor<T> { 334 /// 335 /// let reference = buff.get_mut(); 336 /// ``` 337- #[stable(feature = "rust1", since = "1.0.0")] 338 pub fn get_mut(&mut self) -> &mut T { &mut self.inner } 339 340 /// Returns the current position of this cursor. 341@@ -173,7 +169,6 @@ impl<T> Cursor<T> { 342 /// buff.seek(SeekFrom::Current(-1)).unwrap(); 343 /// assert_eq!(buff.position(), 1); 344 /// ``` 345- #[stable(feature = "rust1", since = "1.0.0")] 346 pub fn position(&self) -> u64 { self.pos } 347 348 /// Sets the position of this cursor. 349@@ -193,11 +188,9 @@ impl<T> Cursor<T> { 350 /// buff.set_position(4); 351 /// assert_eq!(buff.position(), 4); 352 /// ``` 353- #[stable(feature = "rust1", since = "1.0.0")] 354 pub fn set_position(&mut self, pos: u64) { self.pos = pos; } 355 } 356 357-#[stable(feature = "rust1", since = "1.0.0")] 358 impl<T> io::Seek for Cursor<T> where T: AsRef<[u8]> { 359 fn seek(&mut self, style: SeekFrom) -> io::Result<u64> { 360 let pos = match style { 361@@ -216,25 +209,27 @@ impl<T> io::Seek for Cursor<T> where T: AsRef<[u8]> { 362 } 363 } 364 365-#[stable(feature = "rust1", since = "1.0.0")] 366 impl<T> Read for Cursor<T> where T: AsRef<[u8]> { 367 fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> { 368- let n = Read::read(&mut self.fill_buf()?, buf)?; 369+ let n = Read::read(&mut self.get_buf()?, buf)?; 370 self.pos += n as u64; 371 Ok(n) 372 } 373 } 374 375-#[stable(feature = "rust1", since = "1.0.0")] 376-impl<T> BufRead for Cursor<T> where T: AsRef<[u8]> { 377- fn fill_buf(&mut self) -> io::Result<&[u8]> { 378+impl<T> Cursor<T> where T: AsRef<[u8]> { 379+ fn get_buf(&mut self) -> io::Result<&[u8]> { 380 let amt = cmp::min(self.pos, self.inner.as_ref().len() as u64); 381 Ok(&self.inner.as_ref()[(amt as usize)..]) 382 } 383+} 384+ 385+#[cfg(feature = "collections")] 386+impl<T> BufRead for Cursor<T> where T: AsRef<[u8]> { 387+ fn fill_buf(&mut self) -> io::Result<&[u8]> { self.get_buf() } 388 fn consume(&mut self, amt: usize) { self.pos += amt as u64; } 389 } 390 391-#[stable(feature = "rust1", since = "1.0.0")] 392 impl<'a> Write for Cursor<&'a mut [u8]> { 393 #[inline] 394 fn write(&mut self, data: &[u8]) -> io::Result<usize> { 395@@ -246,7 +241,7 @@ impl<'a> Write for Cursor<&'a mut [u8]> { 396 fn flush(&mut self) -> io::Result<()> { Ok(()) } 397 } 398 399-#[stable(feature = "rust1", since = "1.0.0")] 400+#[cfg(feature = "collections")] 401 impl Write for Cursor<Vec<u8>> { 402 fn write(&mut self, buf: &[u8]) -> io::Result<usize> { 403 let pos: usize = self.position().try_into().map_err(|_| { 404@@ -276,8 +271,8 @@ impl Write for Cursor<Vec<u8>> { 405 fn flush(&mut self) -> io::Result<()> { Ok(()) } 406 } 407 408-#[stable(feature = "cursor_box_slice", since = "1.5.0")] 409-impl Write for Cursor<Box<[u8]>> { 410+#[cfg(feature = "alloc")] 411+impl Write for Cursor<::alloc::boxed::Box<[u8]>> { 412 #[inline] 413 fn write(&mut self, buf: &[u8]) -> io::Result<usize> { 414 let pos = cmp::min(self.pos, self.inner.len() as u64); 415diff --git a/error.rs b/error.rs 416index 795c89c..9a11eee 100644 417--- a/error.rs 418+++ b/error.rs 419@@ -8,11 +8,16 @@ 420 // option. This file may not be copied, modified, or distributed 421 // except according to those terms. 422 423-use error; 424-use fmt; 425-use result; 426-use sys; 427-use convert::From; 428+#[cfg(feature="alloc")] use alloc::boxed::Box; 429+#[cfg(not(feature="alloc"))] use ::FakeBox as Box; 430+use core::convert::Into; 431+use core::fmt; 432+use core::marker::{Send, Sync}; 433+use core::option::Option::{self, Some, None}; 434+use core::result; 435+#[cfg(feature="collections")] use collections::string::String; 436+#[cfg(not(feature="collections"))] use ::ErrorString as String; 437+use core::convert::From; 438 439 /// A specialized [`Result`](../result/enum.Result.html) type for I/O 440 /// operations. 441@@ -44,7 +49,6 @@ use convert::From; 442 /// Ok(buffer) 443 /// } 444 /// ``` 445-#[stable(feature = "rust1", since = "1.0.0")] 446 pub type Result<T> = result::Result<T, Error>; 447 448 /// The error type for I/O operations of the `Read`, `Write`, `Seek`, and 449@@ -56,7 +60,6 @@ pub type Result<T> = result::Result<T, Error>; 450 /// 451 /// [`ErrorKind`]: enum.ErrorKind.html 452 #[derive(Debug)] 453-#[stable(feature = "rust1", since = "1.0.0")] 454 pub struct Error { 455 repr: Repr, 456 } 457@@ -64,13 +67,16 @@ pub struct Error { 458 enum Repr { 459 Os(i32), 460 Simple(ErrorKind), 461+ #[cfg(feature="alloc")] 462 Custom(Box<Custom>), 463+ #[cfg(not(feature="alloc"))] 464+ Custom(Custom), 465 } 466 467 #[derive(Debug)] 468 struct Custom { 469 kind: ErrorKind, 470- error: Box<error::Error+Send+Sync>, 471+ error: String, 472 } 473 474 /// A list specifying general categories of I/O error. 475@@ -82,47 +88,34 @@ struct Custom { 476 /// 477 /// [`io::Error`]: struct.Error.html 478 #[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)] 479-#[stable(feature = "rust1", since = "1.0.0")] 480 #[allow(deprecated)] 481 pub enum ErrorKind { 482 /// An entity was not found, often a file. 483- #[stable(feature = "rust1", since = "1.0.0")] 484 NotFound, 485 /// The operation lacked the necessary privileges to complete. 486- #[stable(feature = "rust1", since = "1.0.0")] 487 PermissionDenied, 488 /// The connection was refused by the remote server. 489- #[stable(feature = "rust1", since = "1.0.0")] 490 ConnectionRefused, 491 /// The connection was reset by the remote server. 492- #[stable(feature = "rust1", since = "1.0.0")] 493 ConnectionReset, 494 /// The connection was aborted (terminated) by the remote server. 495- #[stable(feature = "rust1", since = "1.0.0")] 496 ConnectionAborted, 497 /// The network operation failed because it was not connected yet. 498- #[stable(feature = "rust1", since = "1.0.0")] 499 NotConnected, 500 /// A socket address could not be bound because the address is already in 501 /// use elsewhere. 502- #[stable(feature = "rust1", since = "1.0.0")] 503 AddrInUse, 504 /// A nonexistent interface was requested or the requested address was not 505 /// local. 506- #[stable(feature = "rust1", since = "1.0.0")] 507 AddrNotAvailable, 508 /// The operation failed because a pipe was closed. 509- #[stable(feature = "rust1", since = "1.0.0")] 510 BrokenPipe, 511 /// An entity already exists, often a file. 512- #[stable(feature = "rust1", since = "1.0.0")] 513 AlreadyExists, 514 /// The operation needs to block to complete, but the blocking operation was 515 /// requested to not occur. 516- #[stable(feature = "rust1", since = "1.0.0")] 517 WouldBlock, 518 /// A parameter was incorrect. 519- #[stable(feature = "rust1", since = "1.0.0")] 520 InvalidInput, 521 /// Data not valid for the operation were encountered. 522 /// 523@@ -134,10 +127,8 @@ pub enum ErrorKind { 524 /// `InvalidData` if the file's contents are not valid UTF-8. 525 /// 526 /// [`InvalidInput`]: #variant.InvalidInput 527- #[stable(feature = "io_invalid_data", since = "1.2.0")] 528 InvalidData, 529 /// The I/O operation's timeout expired, causing it to be canceled. 530- #[stable(feature = "rust1", since = "1.0.0")] 531 TimedOut, 532 /// An error returned when an operation could not be completed because a 533 /// call to [`write()`] returned [`Ok(0)`]. 534@@ -148,15 +139,12 @@ pub enum ErrorKind { 535 /// 536 /// [`write()`]: ../../std/io/trait.Write.html#tymethod.write 537 /// [`Ok(0)`]: ../../std/io/type.Result.html 538- #[stable(feature = "rust1", since = "1.0.0")] 539 WriteZero, 540 /// This operation was interrupted. 541 /// 542 /// Interrupted operations can typically be retried. 543- #[stable(feature = "rust1", since = "1.0.0")] 544 Interrupted, 545 /// Any I/O error not part of this list. 546- #[stable(feature = "rust1", since = "1.0.0")] 547 Other, 548 549 /// An error returned when an operation could not be completed because an 550@@ -165,15 +153,10 @@ pub enum ErrorKind { 551 /// This typically means that an operation could only succeed if it read a 552 /// particular number of bytes but only a smaller number of bytes could be 553 /// read. 554- #[stable(feature = "read_exact", since = "1.6.0")] 555 UnexpectedEof, 556 557 /// A marker variant that tells the compiler that users of this enum cannot 558 /// match it exhaustively. 559- #[unstable(feature = "io_error_internals", 560- reason = "better expressed through extensible enums that this \ 561- enum cannot be exhaustively matched against", 562- issue = "0")] 563 #[doc(hidden)] 564 __Nonexhaustive, 565 } 566@@ -206,7 +189,6 @@ impl ErrorKind { 567 568 /// Intended for use for errors not exposed to the user, where allocating onto 569 /// the heap (for normal construction via Error::new) is too costly. 570-#[stable(feature = "io_error_from_errorkind", since = "1.14.0")] 571 impl From<ErrorKind> for Error { 572 fn from(kind: ErrorKind) -> Error { 573 Error { 574@@ -234,14 +216,13 @@ impl Error { 575 /// // errors can also be created from other errors 576 /// let custom_error2 = Error::new(ErrorKind::Interrupted, custom_error); 577 /// ``` 578- #[stable(feature = "rust1", since = "1.0.0")] 579 pub fn new<E>(kind: ErrorKind, error: E) -> Error 580- where E: Into<Box<error::Error+Send+Sync>> 581+ where E: Into<String> 582 { 583 Self::_new(kind, error.into()) 584 } 585 586- fn _new(kind: ErrorKind, error: Box<error::Error+Send+Sync>) -> Error { 587+ fn _new(kind: ErrorKind, error: String) -> Error { 588 Error { 589 repr: Repr::Custom(Box::new(Custom { 590 kind: kind, 591@@ -250,24 +231,6 @@ impl Error { 592 } 593 } 594 595- /// Returns an error representing the last OS error which occurred. 596- /// 597- /// This function reads the value of `errno` for the target platform (e.g. 598- /// `GetLastError` on Windows) and will return a corresponding instance of 599- /// `Error` for the error code. 600- /// 601- /// # Examples 602- /// 603- /// ``` 604- /// use std::io::Error; 605- /// 606- /// println!("last OS error: {:?}", Error::last_os_error()); 607- /// ``` 608- #[stable(feature = "rust1", since = "1.0.0")] 609- pub fn last_os_error() -> Error { 610- Error::from_raw_os_error(sys::os::errno() as i32) 611- } 612- 613 /// Creates a new instance of an `Error` from a particular OS error code. 614 /// 615 /// # Examples 616@@ -293,7 +256,6 @@ impl Error { 617 /// assert_eq!(error.kind(), io::ErrorKind::AddrInUse); 618 /// # } 619 /// ``` 620- #[stable(feature = "rust1", since = "1.0.0")] 621 pub fn from_raw_os_error(code: i32) -> Error { 622 Error { repr: Repr::Os(code) } 623 } 624@@ -324,7 +286,6 @@ impl Error { 625 /// print_os_error(&Error::new(ErrorKind::Other, "oh no!")); 626 /// } 627 /// ``` 628- #[stable(feature = "rust1", since = "1.0.0")] 629 pub fn raw_os_error(&self) -> Option<i32> { 630 match self.repr { 631 Repr::Os(i) => Some(i), 632@@ -358,12 +319,11 @@ impl Error { 633 /// print_error(&Error::new(ErrorKind::Other, "oh no!")); 634 /// } 635 /// ``` 636- #[stable(feature = "io_error_inner", since = "1.3.0")] 637- pub fn get_ref(&self) -> Option<&(error::Error+Send+Sync+'static)> { 638+ pub fn get_ref(&self) -> Option<&String> { 639 match self.repr { 640 Repr::Os(..) => None, 641 Repr::Simple(..) => None, 642- Repr::Custom(ref c) => Some(&*c.error), 643+ Repr::Custom(ref c) => Some(&c.error), 644 } 645 } 646 647@@ -429,12 +389,11 @@ impl Error { 648 /// print_error(&change_error(Error::new(ErrorKind::Other, MyError::new()))); 649 /// } 650 /// ``` 651- #[stable(feature = "io_error_inner", since = "1.3.0")] 652- pub fn get_mut(&mut self) -> Option<&mut (error::Error+Send+Sync+'static)> { 653+ pub fn get_mut(&mut self) -> Option<&mut String> { 654 match self.repr { 655 Repr::Os(..) => None, 656 Repr::Simple(..) => None, 657- Repr::Custom(ref mut c) => Some(&mut *c.error), 658+ Repr::Custom(ref mut c) => Some(&mut c.error), 659 } 660 } 661 662@@ -463,8 +422,7 @@ impl Error { 663 /// print_error(Error::new(ErrorKind::Other, "oh no!")); 664 /// } 665 /// ``` 666- #[stable(feature = "io_error_inner", since = "1.3.0")] 667- pub fn into_inner(self) -> Option<Box<error::Error+Send+Sync>> { 668+ pub fn into_inner(self) -> Option<String> { 669 match self.repr { 670 Repr::Os(..) => None, 671 Repr::Simple(..) => None, 672@@ -490,10 +448,9 @@ impl Error { 673 /// print_error(Error::new(ErrorKind::AddrInUse, "oh no!")); 674 /// } 675 /// ``` 676- #[stable(feature = "rust1", since = "1.0.0")] 677 pub fn kind(&self) -> ErrorKind { 678 match self.repr { 679- Repr::Os(code) => sys::decode_error_kind(code), 680+ Repr::Os(_code) => ErrorKind::Other, 681 Repr::Custom(ref c) => c.kind, 682 Repr::Simple(kind) => kind, 683 } 684@@ -504,21 +461,18 @@ impl fmt::Debug for Repr { 685 fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { 686 match *self { 687 Repr::Os(ref code) => 688- fmt.debug_struct("Os").field("code", code) 689- .field("message", &sys::os::error_string(*code)).finish(), 690+ fmt.debug_struct("Os").field("code", code).finish(), 691 Repr::Custom(ref c) => fmt.debug_tuple("Custom").field(c).finish(), 692 Repr::Simple(kind) => fmt.debug_tuple("Kind").field(&kind).finish(), 693 } 694 } 695 } 696 697-#[stable(feature = "rust1", since = "1.0.0")] 698 impl fmt::Display for Error { 699 fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { 700 match self.repr { 701 Repr::Os(code) => { 702- let detail = sys::os::error_string(code); 703- write!(fmt, "{} (os error {})", detail, code) 704+ write!(fmt, "os error {}", code) 705 } 706 Repr::Custom(ref c) => c.error.fmt(fmt), 707 Repr::Simple(kind) => write!(fmt, "{}", kind.as_str()), 708@@ -526,24 +480,6 @@ impl fmt::Display for Error { 709 } 710 } 711 712-#[stable(feature = "rust1", since = "1.0.0")] 713-impl error::Error for Error { 714- fn description(&self) -> &str { 715- match self.repr { 716- Repr::Os(..) | Repr::Simple(..) => self.kind().as_str(), 717- Repr::Custom(ref c) => c.error.description(), 718- } 719- } 720- 721- fn cause(&self) -> Option<&error::Error> { 722- match self.repr { 723- Repr::Os(..) => None, 724- Repr::Simple(..) => None, 725- Repr::Custom(ref c) => c.error.cause(), 726- } 727- } 728-} 729- 730 fn _assert_error_is_sync_send() { 731 fn _is_sync_send<T: Sync+Send>() {} 732 _is_sync_send::<Error>(); 733diff --git a/impls.rs b/impls.rs 734index 6b26c01..0ba399b 100644 735--- a/impls.rs 736+++ b/impls.rs 737@@ -8,26 +8,31 @@ 738 // option. This file may not be copied, modified, or distributed 739 // except according to those terms. 740 741-use cmp; 742-use io::{self, SeekFrom, Read, Write, Seek, BufRead, Error, ErrorKind}; 743-use fmt; 744-use mem; 745+#[cfg(feature="alloc")] use alloc::boxed::Box; 746+use core::cmp; 747+use io::{self, SeekFrom, Read, Write, Seek, Error, ErrorKind}; 748+#[cfg(feature="collections")] use io::BufRead; 749+use core::fmt; 750+use core::mem; 751+#[cfg(feature="collections")] use collections::string::String; 752+#[cfg(feature="collections")] use collections::vec::Vec; 753 754 // ============================================================================= 755 // Forwarding implementations 756 757-#[stable(feature = "rust1", since = "1.0.0")] 758 impl<'a, R: Read + ?Sized> Read for &'a mut R { 759 #[inline] 760 fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> { 761 (**self).read(buf) 762 } 763 764+ #[cfg(feature="collections")] 765 #[inline] 766 fn read_to_end(&mut self, buf: &mut Vec<u8>) -> io::Result<usize> { 767 (**self).read_to_end(buf) 768 } 769 770+ #[cfg(feature="collections")] 771 #[inline] 772 fn read_to_string(&mut self, buf: &mut String) -> io::Result<usize> { 773 (**self).read_to_string(buf) 774@@ -38,7 +43,6 @@ impl<'a, R: Read + ?Sized> Read for &'a mut R { 775 (**self).read_exact(buf) 776 } 777 } 778-#[stable(feature = "rust1", since = "1.0.0")] 779 impl<'a, W: Write + ?Sized> Write for &'a mut W { 780 #[inline] 781 fn write(&mut self, buf: &[u8]) -> io::Result<usize> { (**self).write(buf) } 782@@ -56,12 +60,11 @@ impl<'a, W: Write + ?Sized> Write for &'a mut W { 783 (**self).write_fmt(fmt) 784 } 785 } 786-#[stable(feature = "rust1", since = "1.0.0")] 787 impl<'a, S: Seek + ?Sized> Seek for &'a mut S { 788 #[inline] 789 fn seek(&mut self, pos: SeekFrom) -> io::Result<u64> { (**self).seek(pos) } 790 } 791-#[stable(feature = "rust1", since = "1.0.0")] 792+#[cfg(feature="collections")] 793 impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { 794 #[inline] 795 fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } 796@@ -80,18 +83,20 @@ impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { 797 } 798 } 799 800-#[stable(feature = "rust1", since = "1.0.0")] 801+#[cfg(feature="alloc")] 802 impl<R: Read + ?Sized> Read for Box<R> { 803 #[inline] 804 fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> { 805 (**self).read(buf) 806 } 807 808+ #[cfg(feature="collections")] 809 #[inline] 810 fn read_to_end(&mut self, buf: &mut Vec<u8>) -> io::Result<usize> { 811 (**self).read_to_end(buf) 812 } 813 814+ #[cfg(feature="collections")] 815 #[inline] 816 fn read_to_string(&mut self, buf: &mut String) -> io::Result<usize> { 817 (**self).read_to_string(buf) 818@@ -102,7 +107,7 @@ impl<R: Read + ?Sized> Read for Box<R> { 819 (**self).read_exact(buf) 820 } 821 } 822-#[stable(feature = "rust1", since = "1.0.0")] 823+#[cfg(feature="alloc")] 824 impl<W: Write + ?Sized> Write for Box<W> { 825 #[inline] 826 fn write(&mut self, buf: &[u8]) -> io::Result<usize> { (**self).write(buf) } 827@@ -120,12 +125,12 @@ impl<W: Write + ?Sized> Write for Box<W> { 828 (**self).write_fmt(fmt) 829 } 830 } 831-#[stable(feature = "rust1", since = "1.0.0")] 832+#[cfg(feature="alloc")] 833 impl<S: Seek + ?Sized> Seek for Box<S> { 834 #[inline] 835 fn seek(&mut self, pos: SeekFrom) -> io::Result<u64> { (**self).seek(pos) } 836 } 837-#[stable(feature = "rust1", since = "1.0.0")] 838+#[cfg(feature="collections")] 839 impl<B: BufRead + ?Sized> BufRead for Box<B> { 840 #[inline] 841 fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } 842@@ -151,7 +156,6 @@ impl<B: BufRead + ?Sized> BufRead for Box<B> { 843 /// 844 /// Note that reading updates the slice to point to the yet unread part. 845 /// The slice will be empty when EOF is reached. 846-#[stable(feature = "rust1", since = "1.0.0")] 847 impl<'a> Read for &'a [u8] { 848 #[inline] 849 fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> { 850@@ -175,7 +179,7 @@ impl<'a> Read for &'a [u8] { 851 } 852 } 853 854-#[stable(feature = "rust1", since = "1.0.0")] 855+#[cfg(feature="collections")] 856 impl<'a> BufRead for &'a [u8] { 857 #[inline] 858 fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(*self) } 859@@ -189,7 +193,6 @@ impl<'a> BufRead for &'a [u8] { 860 /// 861 /// Note that writing updates the slice to point to the yet unwritten part. 862 /// The slice will be empty when it has been completely overwritten. 863-#[stable(feature = "rust1", since = "1.0.0")] 864 impl<'a> Write for &'a mut [u8] { 865 #[inline] 866 fn write(&mut self, data: &[u8]) -> io::Result<usize> { 867@@ -215,7 +218,7 @@ impl<'a> Write for &'a mut [u8] { 868 869 /// Write is implemented for `Vec<u8>` by appending to the vector. 870 /// The vector will grow as needed. 871-#[stable(feature = "rust1", since = "1.0.0")] 872+#[cfg(feature="collections")] 873 impl Write for Vec<u8> { 874 #[inline] 875 fn write(&mut self, buf: &[u8]) -> io::Result<usize> { 876diff --git a/memchr.rs b/memchr.rs 877index 3824a5f..312cf47 100644 878--- a/memchr.rs 879+++ b/memchr.rs 880@@ -11,10 +11,12 @@ 881 // Original implementation taken from rust-memchr 882 // Copyright 2015 Andrew Gallant, bluss and Nicolas Koch 883 884+pub use self::fallback::{memchr,memrchr}; 885+ 886 #[allow(dead_code)] 887 pub mod fallback { 888- use cmp; 889- use mem; 890+ use core::cmp; 891+ use core::mem; 892 893 const LO_U64: u64 = 0x0101010101010101; 894 const HI_U64: u64 = 0x8080808080808080; 895diff --git a/mod.rs b/mod.rs 896index ad9ae56..77d9ff1 100644 897--- a/mod.rs 898+++ b/mod.rs 899@@ -253,44 +253,34 @@ 900 //! [`try!`]: ../macro.try.html 901 //! [`read()`]: trait.Read.html#tymethod.read 902 903-#![stable(feature = "rust1", since = "1.0.0")] 904- 905-use cmp; 906+use core::cmp; 907 use rustc_unicode::str as core_str; 908-use error as std_error; 909-use fmt; 910-use result; 911-use str; 912-use memchr; 913- 914-#[stable(feature = "rust1", since = "1.0.0")] 915-pub use self::buffered::{BufReader, BufWriter, LineWriter}; 916-#[stable(feature = "rust1", since = "1.0.0")] 917-pub use self::buffered::IntoInnerError; 918-#[stable(feature = "rust1", since = "1.0.0")] 919+use core::fmt; 920+use core::iter::{Iterator}; 921+use core::marker::Sized; 922+#[cfg(feature="collections")] use core::ops::{Drop, FnOnce}; 923+use core::option::Option::{self, Some, None}; 924+use core::result::Result::{Ok, Err}; 925+use core::result; 926+#[cfg(feature="collections")] use collections::string::String; 927+use core::str; 928+#[cfg(feature="collections")] use collections::vec::Vec; 929+mod memchr; 930+ 931+#[cfg(feature="collections")] pub use self::buffered::{BufReader, BufWriter, LineWriter}; 932+#[cfg(feature="collections")] pub use self::buffered::IntoInnerError; 933 pub use self::cursor::Cursor; 934-#[stable(feature = "rust1", since = "1.0.0")] 935 pub use self::error::{Result, Error, ErrorKind}; 936-#[stable(feature = "rust1", since = "1.0.0")] 937 pub use self::util::{copy, sink, Sink, empty, Empty, repeat, Repeat}; 938-#[stable(feature = "rust1", since = "1.0.0")] 939-pub use self::stdio::{stdin, stdout, stderr, _print, Stdin, Stdout, Stderr}; 940-#[stable(feature = "rust1", since = "1.0.0")] 941-pub use self::stdio::{StdoutLock, StderrLock, StdinLock}; 942-#[unstable(feature = "libstd_io_internals", issue = "0")] 943-#[doc(no_inline, hidden)] 944-pub use self::stdio::{set_panic, set_print}; 945 946 pub mod prelude; 947-mod buffered; 948+#[cfg(feature="collections")] mod buffered; 949 mod cursor; 950 mod error; 951 mod impls; 952-mod lazy; 953 mod util; 954-mod stdio; 955 956-const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; 957+const DEFAULT_BUF_SIZE: usize = 8 * 1024; 958 959 // A few methods below (read_to_string, read_line) will append data into a 960 // `String` buffer, but we need to be pretty careful when doing this. The 961@@ -310,6 +300,7 @@ const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; 962 // 2. We're passing a raw buffer to the function `f`, and it is expected that 963 // the function only *appends* bytes to the buffer. We'll get undefined 964 // behavior if existing bytes are overwritten to have non-UTF-8 data. 965+#[cfg(feature="collections")] 966 fn append_to_string<F>(buf: &mut String, f: F) -> Result<usize> 967 where F: FnOnce(&mut Vec<u8>) -> Result<usize> 968 { 969@@ -341,6 +332,7 @@ fn append_to_string<F>(buf: &mut String, f: F) -> Result<usize> 970 // of data to return. Simply tacking on an extra DEFAULT_BUF_SIZE space every 971 // time is 4,500 times (!) slower than this if the reader has a very small 972 // amount of data to return. 973+#[cfg(feature="collections")] 974 fn read_to_end<R: Read + ?Sized>(r: &mut R, buf: &mut Vec<u8>) -> Result<usize> { 975 let start_len = buf.len(); 976 let mut len = start_len; 977@@ -423,7 +415,6 @@ fn read_to_end<R: Read + ?Sized>(r: &mut R, buf: &mut Vec<u8>) -> Result<usize> 978 /// # Ok(()) 979 /// # } 980 /// ``` 981-#[stable(feature = "rust1", since = "1.0.0")] 982 pub trait Read { 983 /// Pull some bytes from this source into the specified buffer, returning 984 /// how many bytes were read. 985@@ -473,7 +464,6 @@ pub trait Read { 986 /// # Ok(()) 987 /// # } 988 /// ``` 989- #[stable(feature = "rust1", since = "1.0.0")] 990 fn read(&mut self, buf: &mut [u8]) -> Result<usize>; 991 992 /// Read all bytes until EOF in this source, placing them into `buf`. 993@@ -515,7 +505,7 @@ pub trait Read { 994 /// # Ok(()) 995 /// # } 996 /// ``` 997- #[stable(feature = "rust1", since = "1.0.0")] 998+ #[cfg(feature="collections")] 999 fn read_to_end(&mut self, buf: &mut Vec<u8>) -> Result<usize> { 1000 read_to_end(self, buf) 1001 } 1002@@ -553,7 +543,7 @@ pub trait Read { 1003 /// # Ok(()) 1004 /// # } 1005 /// ``` 1006- #[stable(feature = "rust1", since = "1.0.0")] 1007+ #[cfg(feature="collections")] 1008 fn read_to_string(&mut self, buf: &mut String) -> Result<usize> { 1009 // Note that we do *not* call `.read_to_end()` here. We are passing 1010 // `&mut Vec<u8>` (the raw contents of `buf`) into the `read_to_end` 1011@@ -614,7 +604,6 @@ pub trait Read { 1012 /// # Ok(()) 1013 /// # } 1014 /// ``` 1015- #[stable(feature = "read_exact", since = "1.6.0")] 1016 fn read_exact(&mut self, mut buf: &mut [u8]) -> Result<()> { 1017 while !buf.is_empty() { 1018 match self.read(buf) { 1019@@ -666,7 +655,6 @@ pub trait Read { 1020 /// # Ok(()) 1021 /// # } 1022 /// ``` 1023- #[stable(feature = "rust1", since = "1.0.0")] 1024 fn by_ref(&mut self) -> &mut Self where Self: Sized { self } 1025 1026 /// Transforms this `Read` instance to an `Iterator` over its bytes. 1027@@ -696,7 +684,6 @@ pub trait Read { 1028 /// # Ok(()) 1029 /// # } 1030 /// ``` 1031- #[stable(feature = "rust1", since = "1.0.0")] 1032 fn bytes(self) -> Bytes<Self> where Self: Sized { 1033 Bytes { inner: self } 1034 } 1035@@ -733,10 +720,6 @@ pub trait Read { 1036 /// # Ok(()) 1037 /// # } 1038 /// ``` 1039- #[unstable(feature = "io", reason = "the semantics of a partial read/write \ 1040- of where errors happen is currently \ 1041- unclear and may change", 1042- issue = "27802")] 1043 fn chars(self) -> Chars<Self> where Self: Sized { 1044 Chars { inner: self } 1045 } 1046@@ -771,7 +754,6 @@ pub trait Read { 1047 /// # Ok(()) 1048 /// # } 1049 /// ``` 1050- #[stable(feature = "rust1", since = "1.0.0")] 1051 fn chain<R: Read>(self, next: R) -> Chain<Self, R> where Self: Sized { 1052 Chain { first: self, second: next, done_first: false } 1053 } 1054@@ -805,7 +787,6 @@ pub trait Read { 1055 /// # Ok(()) 1056 /// # } 1057 /// ``` 1058- #[stable(feature = "rust1", since = "1.0.0")] 1059 fn take(self, limit: u64) -> Take<Self> where Self: Sized { 1060 Take { inner: self, limit: limit } 1061 } 1062@@ -845,7 +826,6 @@ pub trait Read { 1063 /// # Ok(()) 1064 /// # } 1065 /// ``` 1066-#[stable(feature = "rust1", since = "1.0.0")] 1067 pub trait Write { 1068 /// Write a buffer into this object, returning how many bytes were written. 1069 /// 1070@@ -885,7 +865,6 @@ pub trait Write { 1071 /// # Ok(()) 1072 /// # } 1073 /// ``` 1074- #[stable(feature = "rust1", since = "1.0.0")] 1075 fn write(&mut self, buf: &[u8]) -> Result<usize>; 1076 1077 /// Flush this output stream, ensuring that all intermediately buffered 1078@@ -911,7 +890,6 @@ pub trait Write { 1079 /// # Ok(()) 1080 /// # } 1081 /// ``` 1082- #[stable(feature = "rust1", since = "1.0.0")] 1083 fn flush(&mut self) -> Result<()>; 1084 1085 /// Attempts to write an entire buffer into this write. 1086@@ -938,7 +916,6 @@ pub trait Write { 1087 /// # Ok(()) 1088 /// # } 1089 /// ``` 1090- #[stable(feature = "rust1", since = "1.0.0")] 1091 fn write_all(&mut self, mut buf: &[u8]) -> Result<()> { 1092 while !buf.is_empty() { 1093 match self.write(buf) { 1094@@ -990,7 +967,6 @@ pub trait Write { 1095 /// # Ok(()) 1096 /// # } 1097 /// ``` 1098- #[stable(feature = "rust1", since = "1.0.0")] 1099 fn write_fmt(&mut self, fmt: fmt::Arguments) -> Result<()> { 1100 // Create a shim which translates a Write to a fmt::Write and saves 1101 // off I/O errors. instead of discarding them 1102@@ -1046,7 +1022,6 @@ pub trait Write { 1103 /// # Ok(()) 1104 /// # } 1105 /// ``` 1106- #[stable(feature = "rust1", since = "1.0.0")] 1107 fn by_ref(&mut self) -> &mut Self where Self: Sized { self } 1108 } 1109 1110@@ -1076,7 +1051,6 @@ pub trait Write { 1111 /// # Ok(()) 1112 /// # } 1113 /// ``` 1114-#[stable(feature = "rust1", since = "1.0.0")] 1115 pub trait Seek { 1116 /// Seek to an offset, in bytes, in a stream. 1117 /// 1118@@ -1092,7 +1066,6 @@ pub trait Seek { 1119 /// Seeking to a negative offset is considered an error. 1120 /// 1121 /// [`SeekFrom::Start`]: enum.SeekFrom.html#variant.Start 1122- #[stable(feature = "rust1", since = "1.0.0")] 1123 fn seek(&mut self, pos: SeekFrom) -> Result<u64>; 1124 } 1125 1126@@ -1102,29 +1075,26 @@ pub trait Seek { 1127 /// 1128 /// [`Seek`]: trait.Seek.html 1129 #[derive(Copy, PartialEq, Eq, Clone, Debug)] 1130-#[stable(feature = "rust1", since = "1.0.0")] 1131 pub enum SeekFrom { 1132 /// Set the offset to the provided number of bytes. 1133- #[stable(feature = "rust1", since = "1.0.0")] 1134- Start(#[stable(feature = "rust1", since = "1.0.0")] u64), 1135+ Start(u64), 1136 1137 /// Set the offset to the size of this object plus the specified number of 1138 /// bytes. 1139 /// 1140 /// It is possible to seek beyond the end of an object, but it's an error to 1141 /// seek before byte 0. 1142- #[stable(feature = "rust1", since = "1.0.0")] 1143- End(#[stable(feature = "rust1", since = "1.0.0")] i64), 1144+ End(i64), 1145 1146 /// Set the offset to the current position plus the specified number of 1147 /// bytes. 1148 /// 1149 /// It is possible to seek beyond the end of an object, but it's an error to 1150 /// seek before byte 0. 1151- #[stable(feature = "rust1", since = "1.0.0")] 1152- Current(#[stable(feature = "rust1", since = "1.0.0")] i64), 1153+ Current(i64), 1154 } 1155 1156+#[cfg(feature="collections")] 1157 fn read_until<R: BufRead + ?Sized>(r: &mut R, delim: u8, buf: &mut Vec<u8>) 1158 -> Result<usize> { 1159 let mut read = 0; 1160@@ -1204,7 +1174,7 @@ fn read_until<R: BufRead + ?Sized>(r: &mut R, delim: u8, buf: &mut Vec<u8>) 1161 /// # } 1162 /// ``` 1163 /// 1164-#[stable(feature = "rust1", since = "1.0.0")] 1165+#[cfg(feature="collections")] 1166 pub trait BufRead: Read { 1167 /// Fills the internal buffer of this object, returning the buffer contents. 1168 /// 1169@@ -1249,7 +1219,6 @@ pub trait BufRead: Read { 1170 /// // ensure the bytes we worked with aren't returned again later 1171 /// stdin.consume(length); 1172 /// ``` 1173- #[stable(feature = "rust1", since = "1.0.0")] 1174 fn fill_buf(&mut self) -> Result<&[u8]>; 1175 1176 /// Tells this buffer that `amt` bytes have been consumed from the buffer, 1177@@ -1271,7 +1240,6 @@ pub trait BufRead: Read { 1178 /// that method's example includes an example of `consume()`. 1179 /// 1180 /// [`fill_buf()`]: #tymethod.fill_buf 1181- #[stable(feature = "rust1", since = "1.0.0")] 1182 fn consume(&mut self, amt: usize); 1183 1184 /// Read all bytes into `buf` until the delimiter `byte` or EOF is reached. 1185@@ -1313,7 +1281,6 @@ pub trait BufRead: Read { 1186 /// # Ok(()) 1187 /// # } 1188 /// ``` 1189- #[stable(feature = "rust1", since = "1.0.0")] 1190 fn read_until(&mut self, byte: u8, buf: &mut Vec<u8>) -> Result<usize> { 1191 read_until(self, byte, buf) 1192 } 1193@@ -1360,7 +1327,6 @@ pub trait BufRead: Read { 1194 /// buffer.clear(); 1195 /// } 1196 /// ``` 1197- #[stable(feature = "rust1", since = "1.0.0")] 1198 fn read_line(&mut self, buf: &mut String) -> Result<usize> { 1199 // Note that we are not calling the `.read_until` method here, but 1200 // rather our hardcoded implementation. For more details as to why, see 1201@@ -1397,7 +1363,6 @@ pub trait BufRead: Read { 1202 /// println!("{:?}", content.unwrap()); 1203 /// } 1204 /// ``` 1205- #[stable(feature = "rust1", since = "1.0.0")] 1206 fn split(self, byte: u8) -> Split<Self> where Self: Sized { 1207 Split { buf: self, delim: byte } 1208 } 1209@@ -1425,7 +1390,6 @@ pub trait BufRead: Read { 1210 /// println!("{}", line.unwrap()); 1211 /// } 1212 /// ``` 1213- #[stable(feature = "rust1", since = "1.0.0")] 1214 fn lines(self) -> Lines<Self> where Self: Sized { 1215 Lines { buf: self } 1216 } 1217@@ -1437,14 +1401,12 @@ pub trait BufRead: Read { 1218 /// Please see the documentation of [`chain()`] for more details. 1219 /// 1220 /// [`chain()`]: trait.Read.html#method.chain 1221-#[stable(feature = "rust1", since = "1.0.0")] 1222 pub struct Chain<T, U> { 1223 first: T, 1224 second: U, 1225 done_first: bool, 1226 } 1227 1228-#[stable(feature = "rust1", since = "1.0.0")] 1229 impl<T: Read, U: Read> Read for Chain<T, U> { 1230 fn read(&mut self, buf: &mut [u8]) -> Result<usize> { 1231 if !self.done_first { 1232@@ -1457,7 +1419,7 @@ impl<T: Read, U: Read> Read for Chain<T, U> { 1233 } 1234 } 1235 1236-#[stable(feature = "chain_bufread", since = "1.9.0")] 1237+#[cfg(feature="collections")] 1238 impl<T: BufRead, U: BufRead> BufRead for Chain<T, U> { 1239 fn fill_buf(&mut self) -> Result<&[u8]> { 1240 if !self.done_first { 1241@@ -1484,7 +1446,6 @@ impl<T: BufRead, U: BufRead> BufRead for Chain<T, U> { 1242 /// Please see the documentation of [`take()`] for more details. 1243 /// 1244 /// [`take()`]: trait.Read.html#method.take 1245-#[stable(feature = "rust1", since = "1.0.0")] 1246 pub struct Take<T> { 1247 inner: T, 1248 limit: u64, 1249@@ -1518,7 +1479,6 @@ impl<T> Take<T> { 1250 /// # Ok(()) 1251 /// # } 1252 /// ``` 1253- #[stable(feature = "rust1", since = "1.0.0")] 1254 pub fn limit(&self) -> u64 { self.limit } 1255 1256 /// Consumes the `Take`, returning the wrapped reader. 1257@@ -1543,13 +1503,11 @@ impl<T> Take<T> { 1258 /// # Ok(()) 1259 /// # } 1260 /// ``` 1261- #[unstable(feature = "io_take_into_inner", issue = "23755")] 1262 pub fn into_inner(self) -> T { 1263 self.inner 1264 } 1265 } 1266 1267-#[stable(feature = "rust1", since = "1.0.0")] 1268 impl<T: Read> Read for Take<T> { 1269 fn read(&mut self, buf: &mut [u8]) -> Result<usize> { 1270 // Don't call into inner reader at all at EOF because it may still block 1271@@ -1564,7 +1522,7 @@ impl<T: Read> Read for Take<T> { 1272 } 1273 } 1274 1275-#[stable(feature = "rust1", since = "1.0.0")] 1276+#[cfg(feature="collections")] 1277 impl<T: BufRead> BufRead for Take<T> { 1278 fn fill_buf(&mut self) -> Result<&[u8]> { 1279 // Don't call into inner reader at all at EOF because it may still block 1280@@ -1603,12 +1561,10 @@ fn read_one_byte(reader: &mut Read) -> Option<Result<u8>> { 1281 /// Please see the documentation of [`bytes()`] for more details. 1282 /// 1283 /// [`bytes()`]: trait.Read.html#method.bytes 1284-#[stable(feature = "rust1", since = "1.0.0")] 1285 pub struct Bytes<R> { 1286 inner: R, 1287 } 1288 1289-#[stable(feature = "rust1", since = "1.0.0")] 1290 impl<R: Read> Iterator for Bytes<R> { 1291 type Item = Result<u8>; 1292 1293@@ -1623,8 +1579,6 @@ impl<R: Read> Iterator for Bytes<R> { 1294 /// Please see the documentation of `chars()` for more details. 1295 /// 1296 /// [chars]: trait.Read.html#method.chars 1297-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", 1298- issue = "27802")] 1299 pub struct Chars<R> { 1300 inner: R, 1301 } 1302@@ -1632,8 +1586,6 @@ pub struct Chars<R> { 1303 /// An enumeration of possible errors that can be generated from the `Chars` 1304 /// adapter. 1305 #[derive(Debug)] 1306-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", 1307- issue = "27802")] 1308 pub enum CharsError { 1309 /// Variant representing that the underlying stream was read successfully 1310 /// but it did not contain valid utf8 data. 1311@@ -1643,8 +1595,6 @@ pub enum CharsError { 1312 Other(Error), 1313 } 1314 1315-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", 1316- issue = "27802")] 1317 impl<R: Read> Iterator for Chars<R> { 1318 type Item = result::Result<char, CharsError>; 1319 1320@@ -1676,25 +1626,6 @@ impl<R: Read> Iterator for Chars<R> { 1321 } 1322 } 1323 1324-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", 1325- issue = "27802")] 1326-impl std_error::Error for CharsError { 1327- fn description(&self) -> &str { 1328- match *self { 1329- CharsError::NotUtf8 => "invalid utf8 encoding", 1330- CharsError::Other(ref e) => std_error::Error::description(e), 1331- } 1332- } 1333- fn cause(&self) -> Option<&std_error::Error> { 1334- match *self { 1335- CharsError::NotUtf8 => None, 1336- CharsError::Other(ref e) => e.cause(), 1337- } 1338- } 1339-} 1340- 1341-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", 1342- issue = "27802")] 1343 impl fmt::Display for CharsError { 1344 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { 1345 match *self { 1346@@ -1713,13 +1644,13 @@ impl fmt::Display for CharsError { 1347 /// `BufRead`. Please see the documentation of `split()` for more details. 1348 /// 1349 /// [split]: trait.BufRead.html#method.split 1350-#[stable(feature = "rust1", since = "1.0.0")] 1351+#[cfg(feature="collections")] 1352 pub struct Split<B> { 1353 buf: B, 1354 delim: u8, 1355 } 1356 1357-#[stable(feature = "rust1", since = "1.0.0")] 1358+#[cfg(feature="collections")] 1359 impl<B: BufRead> Iterator for Split<B> { 1360 type Item = Result<Vec<u8>>; 1361 1362@@ -1744,12 +1675,12 @@ impl<B: BufRead> Iterator for Split<B> { 1363 /// `BufRead`. Please see the documentation of `lines()` for more details. 1364 /// 1365 /// [lines]: trait.BufRead.html#method.lines 1366-#[stable(feature = "rust1", since = "1.0.0")] 1367+#[cfg(feature="collections")] 1368 pub struct Lines<B> { 1369 buf: B, 1370 } 1371 1372-#[stable(feature = "rust1", since = "1.0.0")] 1373+#[cfg(feature="collections")] 1374 impl<B: BufRead> Iterator for Lines<B> { 1375 type Item = Result<String>; 1376 1377diff --git a/prelude.rs b/prelude.rs 1378index 8772d0f..49d66c9 100644 1379--- a/prelude.rs 1380+++ b/prelude.rs 1381@@ -18,7 +18,8 @@ 1382 //! use std::io::prelude::*; 1383 //! ``` 1384 1385-#![stable(feature = "rust1", since = "1.0.0")] 1386+pub use super::{Read, Write, Seek}; 1387+#[cfg(feature="collections")] pub use super::BufRead; 1388 1389-#[stable(feature = "rust1", since = "1.0.0")] 1390-pub use super::{Read, Write, BufRead, Seek}; 1391+#[cfg(feature="collections")] pub use alloc::boxed::Box; 1392+#[cfg(feature="collections")] pub use collections::vec::Vec; 1393diff --git a/util.rs b/util.rs 1394index 2c68802..93bcfc3 100644 1395--- a/util.rs 1396+++ b/util.rs 1397@@ -10,7 +10,8 @@ 1398 1399 #![allow(missing_copy_implementations)] 1400 1401-use io::{self, Read, Write, ErrorKind, BufRead}; 1402+use io::{self, Read, Write, ErrorKind}; 1403+#[cfg(feature="collections")] use io::BufRead; 1404 1405 /// Copies the entire contents of a reader into a writer. 1406 /// 1407@@ -42,7 +43,6 @@ use io::{self, Read, Write, ErrorKind, BufRead}; 1408 /// # Ok(()) 1409 /// # } 1410 /// ``` 1411-#[stable(feature = "rust1", since = "1.0.0")] 1412 pub fn copy<R: ?Sized, W: ?Sized>(reader: &mut R, writer: &mut W) -> io::Result<u64> 1413 where R: Read, W: Write 1414 { 1415@@ -66,7 +66,6 @@ pub fn copy<R: ?Sized, W: ?Sized>(reader: &mut R, writer: &mut W) -> io::Result< 1416 /// the documentation of `empty()` for more details. 1417 /// 1418 /// [empty]: fn.empty.html 1419-#[stable(feature = "rust1", since = "1.0.0")] 1420 pub struct Empty { _priv: () } 1421 1422 /// Constructs a new handle to an empty reader. 1423@@ -84,14 +83,12 @@ pub struct Empty { _priv: () } 1424 /// io::empty().read_to_string(&mut buffer).unwrap(); 1425 /// assert!(buffer.is_empty()); 1426 /// ``` 1427-#[stable(feature = "rust1", since = "1.0.0")] 1428 pub fn empty() -> Empty { Empty { _priv: () } } 1429 1430-#[stable(feature = "rust1", since = "1.0.0")] 1431 impl Read for Empty { 1432 fn read(&mut self, _buf: &mut [u8]) -> io::Result<usize> { Ok(0) } 1433 } 1434-#[stable(feature = "rust1", since = "1.0.0")] 1435+#[cfg(feature="collections")] 1436 impl BufRead for Empty { 1437 fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(&[]) } 1438 fn consume(&mut self, _n: usize) {} 1439@@ -103,7 +100,6 @@ impl BufRead for Empty { 1440 /// see the documentation of `repeat()` for more details. 1441 /// 1442 /// [repeat]: fn.repeat.html 1443-#[stable(feature = "rust1", since = "1.0.0")] 1444 pub struct Repeat { byte: u8 } 1445 1446 /// Creates an instance of a reader that infinitely repeats one byte. 1447@@ -120,10 +116,8 @@ pub struct Repeat { byte: u8 } 1448 /// io::repeat(0b101).read_exact(&mut buffer).unwrap(); 1449 /// assert_eq!(buffer, [0b101, 0b101, 0b101]); 1450 /// ``` 1451-#[stable(feature = "rust1", since = "1.0.0")] 1452 pub fn repeat(byte: u8) -> Repeat { Repeat { byte: byte } } 1453 1454-#[stable(feature = "rust1", since = "1.0.0")] 1455 impl Read for Repeat { 1456 fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> { 1457 for slot in &mut *buf { 1458@@ -139,7 +133,6 @@ impl Read for Repeat { 1459 /// see the documentation of `sink()` for more details. 1460 /// 1461 /// [sink]: fn.sink.html 1462-#[stable(feature = "rust1", since = "1.0.0")] 1463 pub struct Sink { _priv: () } 1464 1465 /// Creates an instance of a writer which will successfully consume all data. 1466@@ -156,10 +149,8 @@ pub struct Sink { _priv: () } 1467 /// let num_bytes = io::sink().write(&buffer).unwrap(); 1468 /// assert_eq!(num_bytes, 5); 1469 /// ``` 1470-#[stable(feature = "rust1", since = "1.0.0")] 1471 pub fn sink() -> Sink { Sink { _priv: () } } 1472 1473-#[stable(feature = "rust1", since = "1.0.0")] 1474 impl Write for Sink { 1475 fn write(&mut self, buf: &[u8]) -> io::Result<usize> { Ok(buf.len()) } 1476 fn flush(&mut self) -> io::Result<()> { Ok(()) } 1477