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std: Stabilize std::fmt

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This commit applies the stabilization of std::fmt as outlined in [RFC 380][rfc].
There are a number of breaking changes as a part of this commit which will need
to be handled to migrated old code:

* A number of formatting traits have been removed: String, Bool, Char, Unsigned,
  Signed, and Float. It is recommended to instead use Show wherever possible or
  to use adaptor structs to implement other methods of formatting.

* The format specifier for Boolean has changed from `t` to `b`.

* The enum `FormatError` has been renamed to `Error` as well as becoming a unit
  struct instead of an enum. The `WriteError` variant no longer exists.

* The `format_args_method!` macro has been removed with no replacement. Alter
  code to use the `format_args!` macro instead.

* The public fields of a `Formatter` have become read-only with no replacement.
  Use a new formatting string to alter the formatting flags in combination with
  the `write!` macro. The fields can be accessed through accessor methods on the
  `Formatter` structure.

Other than these breaking changes, the contents of std::fmt should now also all
contain stability markers. Most of them are still #[unstable] or #[experimental]

[rfc]: https://github.com/rust-lang/rfcs/blob/master/text/0380-stabilize-std-fmt.md
[breaking-change]

Closes #18904
This commit is contained in:
Alex Crichton 2014-11-17 11:29:38 -08:00
parent e09d98603e
commit 4af3494bb0
48 changed files with 291 additions and 347 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

149
src/libcore/fmt/mod.rs
View File

@ -12,8 +12,6 @@
#![allow(unused_variables)]
pub use self::FormatError::*;
use any;
use cell::{Cell, Ref, RefMut};
use iter::{Iterator, range};
@ -23,10 +21,9 @@ use option::{Option, Some, None};
use ops::Deref;
use result::{Ok, Err};
use result;
use slice::{AsSlice, SlicePrelude};
use slice::SlicePrelude;
use slice;
use str::StrPrelude;
use str;
pub use self::num::radix;
pub use self::num::Radix;
@ -36,18 +33,16 @@ mod num;
mod float;
pub mod rt;
pub type Result = result::Result<(), FormatError>;
#[experimental = "core and I/O reconciliation may alter this definition"]
pub type Result = result::Result<(), Error>;
/// The error type which is returned from formatting a message into a stream.
///
/// This type does not support transmission of an error other than that an error
/// occurred. Any extra information must be arranged to be transmitted through
/// some other means.
pub enum FormatError {
/// A generic write error occurred during formatting, no other information
/// is transmitted via this variant.
WriteError,
}
#[experimental = "core and I/O reconciliation may alter this definition"]
pub struct Error;
/// A collection of methods that are required to format a message into a stream.
///
@ -58,6 +53,7 @@ pub enum FormatError {
/// This trait should generally not be implemented by consumers of the standard
/// library. The `write!` macro accepts an instance of `io::Writer`, and the
/// `io::Writer` trait is favored over implementing this trait.
#[experimental = "waiting for core and I/O reconciliation"]
pub trait FormatWriter {
/// Writes a slice of bytes into this writer, returning whether the write
/// succeeded.
@ -81,17 +77,13 @@ pub trait FormatWriter {
/// A struct to represent both where to emit formatting strings to and how they
/// should be formatted. A mutable version of this is passed to all formatting
/// traits.
#[unstable = "name may change and implemented traits are also unstable"]
pub struct Formatter<'a> {
/// Flags for formatting (packed version of rt::Flag)
pub flags: uint,
/// Character used as 'fill' whenever there is alignment
pub fill: char,
/// Boolean indication of whether the output should be left-aligned
pub align: rt::Alignment,
/// Optionally specified integer width that the output should be
pub width: Option<uint>,
/// Optionally specified precision for numeric types
pub precision: Option<uint>,
flags: uint,
fill: char,
align: rt::Alignment,
width: Option<uint>,
precision: Option<uint>,
buf: &'a mut FormatWriter+'a,
curarg: slice::Items<'a, Argument<'a>>,
@ -104,6 +96,7 @@ enum Void {}
/// family of functions. It contains a function to format the given value. At
/// compile time it is ensured that the function and the value have the correct
/// types, and then this struct is used to canonicalize arguments to one type.
#[experimental = "implementation detail of the `format_args!` macro"]
pub struct Argument<'a> {
formatter: extern "Rust" fn(&Void, &mut Formatter) -> Result,
value: &'a Void,
@ -115,6 +108,7 @@ impl<'a> Arguments<'a> {
/// which is valid because the compiler performs all necessary validation to
/// ensure that the resulting call to format/write would be safe.
#[doc(hidden)] #[inline]
#[experimental = "implementation detail of the `format_args!` macro"]
pub unsafe fn new<'a>(pieces: &'static [&'static str],
args: &'a [Argument<'a>]) -> Arguments<'a> {
Arguments {
@ -128,6 +122,7 @@ impl<'a> Arguments<'a> {
/// The `pieces` array must be at least as long as `fmt` to construct
/// a valid Arguments structure.
#[doc(hidden)] #[inline]
#[experimental = "implementation detail of the `format_args!` macro"]
pub unsafe fn with_placeholders<'a>(pieces: &'static [&'static str],
fmt: &'static [rt::Argument<'static>],
args: &'a [Argument<'a>]) -> Arguments<'a> {
@ -148,6 +143,7 @@ impl<'a> Arguments<'a> {
/// and pass it to a function or closure, passed as the first argument. The
/// macro validates the format string at compile-time so usage of the `write`
/// and `format` functions can be safely performed.
#[stable]
pub struct Arguments<'a> {
// Format string pieces to print.
pieces: &'a [&'a str],
@ -169,84 +165,57 @@ impl<'a> Show for Arguments<'a> {
/// When a format is not otherwise specified, types are formatted by ascribing
/// to this trait. There is not an explicit way of selecting this trait to be
/// used for formatting, it is only if no other format is specified.
#[unstable = "I/O and core have yet to be reconciled"]
pub trait Show for Sized? {
/// Formats the value using the given formatter.
fn fmt(&self, &mut Formatter) -> Result;
}
/// Format trait for the `b` character
pub trait Bool for Sized? {
/// Formats the value using the given formatter.
fn fmt(&self, &mut Formatter) -> Result;
}
/// Format trait for the `c` character
pub trait Char for Sized? {
/// Formats the value using the given formatter.
fn fmt(&self, &mut Formatter) -> Result;
}
/// Format trait for the `i` and `d` characters
pub trait Signed for Sized? {
/// Formats the value using the given formatter.
fn fmt(&self, &mut Formatter) -> Result;
}
/// Format trait for the `u` character
pub trait Unsigned for Sized? {
/// Formats the value using the given formatter.
fn fmt(&self, &mut Formatter) -> Result;
}
/// Format trait for the `o` character
#[unstable = "I/O and core have yet to be reconciled"]
pub trait Octal for Sized? {
/// Formats the value using the given formatter.
fn fmt(&self, &mut Formatter) -> Result;
}
/// Format trait for the `t` character
#[unstable = "I/O and core have yet to be reconciled"]
pub trait Binary for Sized? {
/// Formats the value using the given formatter.
fn fmt(&self, &mut Formatter) -> Result;
}
/// Format trait for the `x` character
#[unstable = "I/O and core have yet to be reconciled"]
pub trait LowerHex for Sized? {
/// Formats the value using the given formatter.
fn fmt(&self, &mut Formatter) -> Result;
}
/// Format trait for the `X` character
#[unstable = "I/O and core have yet to be reconciled"]
pub trait UpperHex for Sized? {
/// Formats the value using the given formatter.
fn fmt(&self, &mut Formatter) -> Result;
}
/// Format trait for the `s` character
pub trait String for Sized? {
/// Formats the value using the given formatter.
fn fmt(&self, &mut Formatter) -> Result;
}
/// Format trait for the `p` character
#[unstable = "I/O and core have yet to be reconciled"]
pub trait Pointer for Sized? {
/// Formats the value using the given formatter.
fn fmt(&self, &mut Formatter) -> Result;
}
/// Format trait for the `f` character
pub trait Float for Sized? {
/// Formats the value using the given formatter.
fn fmt(&self, &mut Formatter) -> Result;
}
/// Format trait for the `e` character
#[unstable = "I/O and core have yet to be reconciled"]
pub trait LowerExp for Sized? {
/// Formats the value using the given formatter.
fn fmt(&self, &mut Formatter) -> Result;
}
/// Format trait for the `E` character
#[unstable = "I/O and core have yet to be reconciled"]
pub trait UpperExp for Sized? {
/// Formats the value using the given formatter.
fn fmt(&self, &mut Formatter) -> Result;
@ -271,6 +240,8 @@ static DEFAULT_ARGUMENT: rt::Argument<'static> = rt::Argument {
///
/// * output - the buffer to write output to
/// * args - the precompiled arguments generated by `format_args!`
#[experimental = "libcore and I/O have yet to be reconciled, and this is an \
implementation detail which should not otherwise be exported"]
pub fn write(output: &mut FormatWriter, args: &Arguments) -> Result {
let mut formatter = Formatter {
flags: 0,
@ -368,6 +339,7 @@ impl<'a> Formatter<'a> {
///
/// This function will correctly account for the flags provided as well as
/// the minimum width. It will not take precision into account.
#[unstable = "definition may change slightly over time"]
pub fn pad_integral(&mut self,
is_positive: bool,
prefix: &str,
@ -440,6 +412,7 @@ impl<'a> Formatter<'a> {
/// is longer than this length
///
/// Notably this function ignored the `flag` parameters
#[unstable = "definition may change slightly over time"]
pub fn pad(&mut self, s: &str) -> Result {
// Make sure there's a fast path up front
if self.width.is_none() && self.precision.is_none() {
@ -516,19 +489,48 @@ impl<'a> Formatter<'a> {
/// Writes some data to the underlying buffer contained within this
/// formatter.
#[unstable = "reconciling core and I/O may alter this definition"]
pub fn write(&mut self, data: &[u8]) -> Result {
self.buf.write(data)
}
/// Writes some formatted information into this instance
#[unstable = "reconciling core and I/O may alter this definition"]
pub fn write_fmt(&mut self, fmt: &Arguments) -> Result {
write(self.buf, fmt)
}
/// Flags for formatting (packed version of rt::Flag)
#[experimental = "return type may change and method was just created"]
pub fn flags(&self) -> uint { self.flags }
/// Character used as 'fill' whenever there is alignment
#[unstable = "method was just created"]
pub fn fill(&self) -> char { self.fill }
/// Flag indicating what form of alignment was requested
#[unstable = "method was just created"]
pub fn align(&self) -> rt::Alignment { self.align }
/// Optionally specified integer width that the output should be
#[unstable = "method was just created"]
pub fn width(&self) -> Option<uint> { self.width }
/// Optionally specified precision for numeric types
#[unstable = "method was just created"]
pub fn precision(&self) -> Option<uint> { self.precision }
}
impl Show for Error {
fn fmt(&self, f: &mut Formatter) -> Result {
"an error occurred when formatting an argument".fmt(f)
}
}
/// This is a function which calls are emitted to by the compiler itself to
/// create the Argument structures that are passed into the `format` function.
#[doc(hidden)] #[inline]
#[experimental = "implementation detail of the `format_args!` macro"]
pub fn argument<'a, T>(f: extern "Rust" fn(&T, &mut Formatter) -> Result,
t: &'a T) -> Argument<'a> {
unsafe {
@ -542,15 +544,17 @@ pub fn argument<'a, T>(f: extern "Rust" fn(&T, &mut Formatter) -> Result,
/// When the compiler determines that the type of an argument *must* be a string
/// (such as for select), then it invokes this method.
#[doc(hidden)] #[inline]
#[experimental = "implementation detail of the `format_args!` macro"]
pub fn argumentstr<'a>(s: &'a &str) -> Argument<'a> {
argument(String::fmt, s)
argument(Show::fmt, s)
}
/// When the compiler determines that the type of an argument *must* be a uint
/// (such as for plural), then it invokes this method.
#[doc(hidden)] #[inline]
#[experimental = "implementation detail of the `format_args!` macro"]
pub fn argumentuint<'a>(s: &'a uint) -> Argument<'a> {
argument(Unsigned::fmt, s)
argument(Show::fmt, s)
}
// Implementations of the core formatting traits
@ -565,32 +569,26 @@ impl<'a> Show for &'a Show+'a {
fn fmt(&self, f: &mut Formatter) -> Result { (*self).fmt(f) }
}
impl Bool for bool {
impl Show for bool {
fn fmt(&self, f: &mut Formatter) -> Result {
String::fmt(if *self { "true" } else { "false" }, f)
Show::fmt(if *self { "true" } else { "false" }, f)
}
}
impl<T: str::Str> String for T {
fn fmt(&self, f: &mut Formatter) -> Result {
f.pad(self.as_slice())
}
}
impl String for str {
impl Show for str {
fn fmt(&self, f: &mut Formatter) -> Result {
f.pad(self)
}
}
impl Char for char {
impl Show for char {
fn fmt(&self, f: &mut Formatter) -> Result {
use char::Char;
let mut utf8 = [0u8, ..4];
let amt = self.encode_utf8(&mut utf8).unwrap_or(0);
let s: &str = unsafe { mem::transmute(utf8[..amt]) };
String::fmt(s, f)
Show::fmt(s, f)
}
}
@ -620,7 +618,7 @@ impl<'a, T> Pointer for &'a mut T {
}
macro_rules! floating(($ty:ident) => {
impl Float for $ty {
impl Show for $ty {
fn fmt(&self, fmt: &mut Formatter) -> Result {
use num::Float;
@ -688,19 +686,6 @@ floating!(f64)
// Implementation of Show for various core types
macro_rules! delegate(($ty:ty to $other:ident) => {
impl Show for $ty {
fn fmt(&self, f: &mut Formatter) -> Result {
$other::fmt(self, f)
}
}
})
delegate!(str to String)
delegate!(bool to Bool)
delegate!(char to Char)
delegate!(f32 to Float)
delegate!(f64 to Float)
impl<T> Show for *const T {
fn fmt(&self, f: &mut Formatter) -> Result { Pointer::fmt(self, f) }
}

5
src/libcore/fmt/num.rs
View File

@ -109,6 +109,7 @@ radix!(UpperHex, 16, "0x", x @ 0 ... 9 => b'0' + x,
/// A radix with in the range of `2..36`.
#[deriving(Clone, PartialEq)]
#[unstable = "may be renamed or move to a different module"]
pub struct Radix {
base: u8,
}
@ -132,6 +133,7 @@ impl GenericRadix for Radix {
}
/// A helper type for formatting radixes.
#[unstable = "may be renamed or move to a different module"]
pub struct RadixFmt<T, R>(T, R);
/// Constructs a radix formatter in the range of `2..36`.
@ -142,6 +144,7 @@ pub struct RadixFmt<T, R>(T, R);
/// use std::fmt::radix;
/// assert_eq!(format!("{}", radix(55i, 36)), "1j".to_string());
/// ```
#[unstable = "may be renamed or move to a different module"]
pub fn radix<T>(x: T, base: u8) -> RadixFmt<T, Radix> {
RadixFmt(x, Radix::new(base))
}
@ -167,7 +170,6 @@ macro_rules! int_base {
macro_rules! integer {
($Int:ident, $Uint:ident) => {
int_base!(Show for $Int as $Int -> Decimal)
int_base!(Signed for $Int as $Int -> Decimal)
int_base!(Binary for $Int as $Uint -> Binary)
int_base!(Octal for $Int as $Uint -> Octal)
int_base!(LowerHex for $Int as $Uint -> LowerHex)
@ -175,7 +177,6 @@ macro_rules! integer {
radix_fmt!($Int as $Int, fmt_int)
int_base!(Show for $Uint as $Uint -> Decimal)
int_base!(Unsigned for $Uint as $Uint -> Decimal)
int_base!(Binary for $Uint as $Uint -> Binary)
int_base!(Octal for $Uint as $Uint -> Octal)
int_base!(LowerHex for $Uint as $Uint -> LowerHex)

2
src/libcore/fmt/rt.rs
View File

@ -14,6 +14,8 @@
//! These definitions are similar to their `ct` equivalents, but differ in that
//! these can be statically allocated and are slightly optimized for the runtime
#![experimental = "implementation detail of the `format_args!` macro"]
pub use self::Alignment::*;
pub use self::Count::*;
pub use self::Position::*;

15
src/libcore/macros.rs
View File

@ -108,7 +108,10 @@ macro_rules! try(
/// Writing a formatted string into a writer
#[macro_export]
macro_rules! write(
($dst:expr, $($arg:tt)*) => (format_args_method!($dst, write_fmt, $($arg)*))
($dst:expr, $($arg:tt)*) => ({
let dst = &mut *$dst;
format_args!(|args| { dst.write_fmt(args) }, $($arg)*)
})
)
/// Writing a formatted string plus a newline into a writer
@ -119,15 +122,5 @@ macro_rules! writeln(
)
)
/// Write some formatted data into a stream.
///
/// Identical to the macro in `std::macros`
#[macro_export]
macro_rules! write(
($dst:expr, $($arg:tt)*) => ({
format_args_method!($dst, write_fmt, $($arg)*)
})
)
#[macro_export]
macro_rules! unreachable( () => (panic!("unreachable code")) )

81
src/libcoretest/fmt/num.rs
View File

@ -21,16 +21,16 @@ fn test_format_int() {
assert!(format!("{}", 1i16).as_slice() == "1");
assert!(format!("{}", 1i32).as_slice() == "1");
assert!(format!("{}", 1i64).as_slice() == "1");
assert!(format!("{:d}", -1i).as_slice() == "-1");
assert!(format!("{:d}", -1i8).as_slice() == "-1");
assert!(format!("{:d}", -1i16).as_slice() == "-1");
assert!(format!("{:d}", -1i32).as_slice() == "-1");
assert!(format!("{:d}", -1i64).as_slice() == "-1");
assert!(format!("{:t}", 1i).as_slice() == "1");
assert!(format!("{:t}", 1i8).as_slice() == "1");
assert!(format!("{:t}", 1i16).as_slice() == "1");
assert!(format!("{:t}", 1i32).as_slice() == "1");
assert!(format!("{:t}", 1i64).as_slice() == "1");
assert!(format!("{}", -1i).as_slice() == "-1");
assert!(format!("{}", -1i8).as_slice() == "-1");
assert!(format!("{}", -1i16).as_slice() == "-1");
assert!(format!("{}", -1i32).as_slice() == "-1");
assert!(format!("{}", -1i64).as_slice() == "-1");
assert!(format!("{:b}", 1i).as_slice() == "1");
assert!(format!("{:b}", 1i8).as_slice() == "1");
assert!(format!("{:b}", 1i16).as_slice() == "1");
assert!(format!("{:b}", 1i32).as_slice() == "1");
assert!(format!("{:b}", 1i64).as_slice() == "1");
assert!(format!("{:x}", 1i).as_slice() == "1");
assert!(format!("{:x}", 1i8).as_slice() == "1");
assert!(format!("{:x}", 1i16).as_slice() == "1");
@ -52,16 +52,11 @@ fn test_format_int() {
assert!(format!("{}", 1u16).as_slice() == "1");
assert!(format!("{}", 1u32).as_slice() == "1");
assert!(format!("{}", 1u64).as_slice() == "1");
assert!(format!("{:u}", 1u).as_slice() == "1");
assert!(format!("{:u}", 1u8).as_slice() == "1");
assert!(format!("{:u}", 1u16).as_slice() == "1");
assert!(format!("{:u}", 1u32).as_slice() == "1");
assert!(format!("{:u}", 1u64).as_slice() == "1");
assert!(format!("{:t}", 1u).as_slice() == "1");
assert!(format!("{:t}", 1u8).as_slice() == "1");
assert!(format!("{:t}", 1u16).as_slice() == "1");
assert!(format!("{:t}", 1u32).as_slice() == "1");
assert!(format!("{:t}", 1u64).as_slice() == "1");
assert!(format!("{:b}", 1u).as_slice() == "1");
assert!(format!("{:b}", 1u8).as_slice() == "1");
assert!(format!("{:b}", 1u16).as_slice() == "1");
assert!(format!("{:b}", 1u32).as_slice() == "1");
assert!(format!("{:b}", 1u64).as_slice() == "1");
assert!(format!("{:x}", 1u).as_slice() == "1");
assert!(format!("{:x}", 1u8).as_slice() == "1");
assert!(format!("{:x}", 1u16).as_slice() == "1");
@ -79,9 +74,9 @@ fn test_format_int() {
assert!(format!("{:o}", 1u64).as_slice() == "1");
// Test a larger number
assert!(format!("{:t}", 55i).as_slice() == "110111");
assert!(format!("{:b}", 55i).as_slice() == "110111");
assert!(format!("{:o}", 55i).as_slice() == "67");
assert!(format!("{:d}", 55i).as_slice() == "55");
assert!(format!("{}", 55i).as_slice() == "55");
assert!(format!("{:x}", 55i).as_slice() == "37");
assert!(format!("{:X}", 55i).as_slice() == "37");
}
@ -89,15 +84,13 @@ fn test_format_int() {
#[test]
fn test_format_int_zero() {
assert!(format!("{}", 0i).as_slice() == "0");
assert!(format!("{:d}", 0i).as_slice() == "0");
assert!(format!("{:t}", 0i).as_slice() == "0");
assert!(format!("{:b}", 0i).as_slice() == "0");
assert!(format!("{:o}", 0i).as_slice() == "0");
assert!(format!("{:x}", 0i).as_slice() == "0");
assert!(format!("{:X}", 0i).as_slice() == "0");
assert!(format!("{}", 0u).as_slice() == "0");
assert!(format!("{:u}", 0u).as_slice() == "0");
assert!(format!("{:t}", 0u).as_slice() == "0");
assert!(format!("{:b}", 0u).as_slice() == "0");
assert!(format!("{:o}", 0u).as_slice() == "0");
assert!(format!("{:x}", 0u).as_slice() == "0");
assert!(format!("{:X}", 0u).as_slice() == "0");
@ -105,11 +98,11 @@ fn test_format_int_zero() {
#[test]
fn test_format_int_flags() {
assert!(format!("{:3d}", 1i).as_slice() == " 1");
assert!(format!("{:>3d}", 1i).as_slice() == " 1");
assert!(format!("{:>+3d}", 1i).as_slice() == " +1");
assert!(format!("{:<3d}", 1i).as_slice() == "1 ");
assert!(format!("{:#d}", 1i).as_slice() == "1");
assert!(format!("{:3}", 1i).as_slice() == " 1");
assert!(format!("{:>3}", 1i).as_slice() == " 1");
assert!(format!("{:>+3}", 1i).as_slice() == " +1");
assert!(format!("{:<3}", 1i).as_slice() == "1 ");
assert!(format!("{:#}", 1i).as_slice() == "1");
assert!(format!("{:#x}", 10i).as_slice() == "0xa");
assert!(format!("{:#X}", 10i).as_slice() == "0xA");
assert!(format!("{:#5x}", 10i).as_slice() == " 0xa");
@ -119,25 +112,25 @@ fn test_format_int_flags() {
assert!(format!("{:<8x}", 10i).as_slice() == "a ");
assert!(format!("{:>8x}", 10i).as_slice() == " a");
assert!(format!("{:#08x}", 10i).as_slice() == "0x00000a");
assert!(format!("{:08d}", -10i).as_slice() == "-0000010");
assert!(format!("{:08}", -10i).as_slice() == "-0000010");
assert!(format!("{:x}", -1u8).as_slice() == "ff");
assert!(format!("{:X}", -1u8).as_slice() == "FF");
assert!(format!("{:t}", -1u8).as_slice() == "11111111");
assert!(format!("{:b}", -1u8).as_slice() == "11111111");
assert!(format!("{:o}", -1u8).as_slice() == "377");
assert!(format!("{:#x}", -1u8).as_slice() == "0xff");
assert!(format!("{:#X}", -1u8).as_slice() == "0xFF");
assert!(format!("{:#t}", -1u8).as_slice() == "0b11111111");
assert!(format!("{:#b}", -1u8).as_slice() == "0b11111111");
assert!(format!("{:#o}", -1u8).as_slice() == "0o377");
}
#[test]
fn test_format_int_sign_padding() {
assert!(format!("{:+5d}", 1i).as_slice() == " +1");
assert!(format!("{:+5d}", -1i).as_slice() == " -1");
assert!(format!("{:05d}", 1i).as_slice() == "00001");
assert!(format!("{:05d}", -1i).as_slice() == "-0001");
assert!(format!("{:+05d}", 1i).as_slice() == "+0001");
assert!(format!("{:+05d}", -1i).as_slice() == "-0001");
assert!(format!("{:+5}", 1i).as_slice() == " +1");
assert!(format!("{:+5}", -1i).as_slice() == " -1");
assert!(format!("{:05}", 1i).as_slice() == "00001");
assert!(format!("{:05}", -1i).as_slice() == "-0001");
assert!(format!("{:+05}", 1i).as_slice() == "+0001");
assert!(format!("{:+05}", -1i).as_slice() == "-0001");
}
#[test]
@ -169,7 +162,7 @@ mod uint {
#[bench]
fn format_bin(b: &mut Bencher) {
let mut rng = weak_rng();
b.iter(|| { format!("{:t}", rng.gen::<uint>()); })
b.iter(|| { format!("{:b}", rng.gen::<uint>()); })
}
#[bench]
@ -181,7 +174,7 @@ mod uint {
#[bench]
fn format_dec(b: &mut Bencher) {
let mut rng = weak_rng();
b.iter(|| { format!("{:u}", rng.gen::<uint>()); })
b.iter(|| { format!("{}", rng.gen::<uint>()); })
}
#[bench]
@ -205,7 +198,7 @@ mod int {
#[bench]
fn format_bin(b: &mut Bencher) {
let mut rng = weak_rng();
b.iter(|| { format!("{:t}", rng.gen::<int>()); })
b.iter(|| { format!("{:b}", rng.gen::<int>()); })
}
#[bench]
@ -217,7 +210,7 @@ mod int {
#[bench]
fn format_dec(b: &mut Bencher) {
let mut rng = weak_rng();
b.iter(|| { format!("{:d}", rng.gen::<int>()); })
b.iter(|| { format!("{}", rng.gen::<int>()); })
}
#[bench]

2
src/libflate/lib.rs
View File

@ -130,7 +130,7 @@ mod tests {
input.len());
let cmp = deflate_bytes(input.as_slice()).expect("deflation failed");
let out = inflate_bytes(cmp.as_slice()).expect("inflation failed");
debug!("{} bytes deflated to {} ({:.1f}% size)",
debug!("{} bytes deflated to {} ({:.1}% size)",
input.len(), cmp.len(),
100.0 * ((cmp.len() as f64) / (input.len() as f64)));
assert_eq!(input.as_slice(), out.as_slice());

4
src/libgraphviz/lib.rs
View File

@ -221,7 +221,7 @@ pub fn render_to<W:Writer>(output: &mut W) {
impl<'a> dot::Labeller<'a, Nd<'a>, Ed<'a>> for Graph {
fn graph_id(&'a self) -> dot::Id<'a> { dot::Id::new("example3").unwrap() }
fn node_id(&'a self, n: &Nd<'a>) -> dot::Id<'a> {
dot::Id::new(format!("N{:u}", n.val0())).unwrap()
dot::Id::new(format!("N{}", n.val0())).unwrap()
}
fn node_label<'a>(&'a self, n: &Nd<'a>) -> dot::LabelText<'a> {
let &(i, _) = n;
@ -635,7 +635,7 @@ mod tests {
}
fn id_name<'a>(n: &Node) -> Id<'a> {
Id::new(format!("N{:u}", *n)).unwrap()
Id::new(format!("N{}", *n)).unwrap()
}
impl<'a> Labeller<'a, Node, &'a Edge> for LabelledGraph {

7
src/liblog/lib.rs
View File

@ -241,13 +241,6 @@ impl fmt::Show for LogLevel {
}
}
impl fmt::Signed for LogLevel {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
let LogLevel(level) = *self;
write!(fmt, "{}", level)
}
}
impl Logger for DefaultLogger {
fn log(&mut self, record: &LogRecord) {
match writeln!(&mut self.handle,

2
src/librand/lib.rs
View File

@ -237,7 +237,7 @@ pub trait Rng {
/// use std::rand::{task_rng, Rng};
///
/// let mut rng = task_rng();
/// println!("{:b}", rng.gen_weighted_bool(3));
/// println!("{}", rng.gen_weighted_bool(3));
/// ```
fn gen_weighted_bool(&mut self, n: uint) -> bool {
n == 0 || self.gen_range(0, n) == 0

2
src/librustc/middle/borrowck/mod.rs
View File

@ -102,7 +102,7 @@ pub fn check_crate(tcx: &ty::ctxt) {
fn make_stat(bccx: &BorrowckCtxt, stat: uint) -> String {
let total = bccx.stats.guaranteed_paths as f64;
let perc = if total == 0.0 { 0.0 } else { stat as f64 * 100.0 / total };
format!("{} ({:.0f}%)", stat, perc)
format!("{} ({:.0}%)", stat, perc)
}
}

2
src/librustc/middle/cfg/graphviz.rs
View File

@ -53,7 +53,7 @@ impl<'a, 'ast> dot::Labeller<'a, Node<'a>, Edge<'a>> for LabelledCFG<'a, 'ast> {
fn graph_id(&'a self) -> dot::Id<'a> { dot::Id::new(self.name.as_slice()).unwrap() }
fn node_id(&'a self, &(i,_): &Node<'a>) -> dot::Id<'a> {
dot::Id::new(format!("N{:u}", i.node_id())).unwrap()
dot::Id::new(format!("N{}", i.node_id())).unwrap()
}
fn node_label(&'a self, &(i, n): &Node<'a>) -> dot::LabelText<'a> {

3
src/librustc/middle/check_match.rs
View File

@ -81,8 +81,7 @@ impl<'a> fmt::Show for Matrix<'a> {
try!(write!(f, "+"));
for (column, pat_str) in row.into_iter().enumerate() {
try!(write!(f, " "));
f.width = Some(column_widths[column]);
try!(f.pad(pat_str.as_slice()));
try!(write!(f, "{:1$}", pat_str, column_widths[column]));
try!(write!(f, " +"));
}
try!(write!(f, "\n"));

30
src/librustc/middle/dataflow.rs
View File

@ -194,7 +194,7 @@ impl<'a, 'tcx, O:DataFlowOperator> DataFlowContext<'a, 'tcx, O> {
let words_per_id = (bits_per_id + uint::BITS - 1) / uint::BITS;
let num_nodes = cfg.graph.all_nodes().len();
debug!("DataFlowContext::new(analysis_name: {:s}, id_range={}, \
debug!("DataFlowContext::new(analysis_name: {}, id_range={}, \
bits_per_id={}, words_per_id={}) \
num_nodes: {}",
analysis_name, id_range, bits_per_id, words_per_id,
@ -223,7 +223,7 @@ impl<'a, 'tcx, O:DataFlowOperator> DataFlowContext<'a, 'tcx, O> {
pub fn add_gen(&mut self, id: ast::NodeId, bit: uint) {
//! Indicates that `id` generates `bit`
debug!("{:s} add_gen(id={}, bit={})",
debug!("{} add_gen(id={}, bit={})",
self.analysis_name, id, bit);
assert!(self.nodeid_to_index.contains_key(&id));
assert!(self.bits_per_id > 0);
@ -236,7 +236,7 @@ impl<'a, 'tcx, O:DataFlowOperator> DataFlowContext<'a, 'tcx, O> {
pub fn add_kill(&mut self, id: ast::NodeId, bit: uint) {
//! Indicates that `id` kills `bit`
debug!("{:s} add_kill(id={}, bit={})",
debug!("{} add_kill(id={}, bit={})",
self.analysis_name, id, bit);
assert!(self.nodeid_to_index.contains_key(&id));
assert!(self.bits_per_id > 0);
@ -249,7 +249,7 @@ impl<'a, 'tcx, O:DataFlowOperator> DataFlowContext<'a, 'tcx, O> {
fn apply_gen_kill(&self, cfgidx: CFGIndex, bits: &mut [uint]) {
//! Applies the gen and kill sets for `cfgidx` to `bits`
debug!("{:s} apply_gen_kill(cfgidx={}, bits={}) [before]",
debug!("{} apply_gen_kill(cfgidx={}, bits={}) [before]",
self.analysis_name, cfgidx, mut_bits_to_string(bits));
assert!(self.bits_per_id > 0);
@ -259,7 +259,7 @@ impl<'a, 'tcx, O:DataFlowOperator> DataFlowContext<'a, 'tcx, O> {
let kills = self.kills.slice(start, end);
bitwise(bits, kills, &Subtract);
debug!("{:s} apply_gen_kill(cfgidx={}, bits={}) [after]",
debug!("{} apply_gen_kill(cfgidx={}, bits={}) [after]",
self.analysis_name, cfgidx, mut_bits_to_string(bits));
}
@ -316,7 +316,7 @@ impl<'a, 'tcx, O:DataFlowOperator> DataFlowContext<'a, 'tcx, O> {
temp_bits.as_slice()
}
};
debug!("{:s} each_bit_for_node({}, cfgidx={}) bits={}",
debug!("{} each_bit_for_node({}, cfgidx={}) bits={}",
self.analysis_name, e, cfgidx, bits_to_string(slice));
self.each_bit(slice, f)
}
@ -337,7 +337,7 @@ impl<'a, 'tcx, O:DataFlowOperator> DataFlowContext<'a, 'tcx, O> {
let cfgidx = to_cfgidx_or_die(id, &self.nodeid_to_index);
let (start, end) = self.compute_id_range(cfgidx);
let gens = self.gens.slice(start, end);
debug!("{:s} each_gen_bit(id={}, gens={})",
debug!("{} each_gen_bit(id={}, gens={})",
self.analysis_name, id, bits_to_string(gens));
self.each_bit(gens, f)
}
@ -385,7 +385,7 @@ impl<'a, 'tcx, O:DataFlowOperator> DataFlowContext<'a, 'tcx, O> {
//! This is usually called (if it is called at all), after
//! all add_gen and add_kill calls, but before propagate.
debug!("{:s} add_kills_from_flow_exits", self.analysis_name);
debug!("{} add_kills_from_flow_exits", self.analysis_name);
if self.bits_per_id == 0 {
// Skip the surprisingly common degenerate case. (Note
// compute_id_range requires self.words_per_id > 0.)
@ -408,7 +408,7 @@ impl<'a, 'tcx, O:DataFlowOperator> DataFlowContext<'a, 'tcx, O> {
}
}
None => {
debug!("{:s} add_kills_from_flow_exits flow_exit={} \
debug!("{} add_kills_from_flow_exits flow_exit={} \
no cfg_idx for exiting_scope={}",
self.analysis_name, flow_exit, node_id);
}
@ -417,10 +417,10 @@ impl<'a, 'tcx, O:DataFlowOperator> DataFlowContext<'a, 'tcx, O> {
if changed {
let bits = self.kills.slice_mut(start, end);
debug!("{:s} add_kills_from_flow_exits flow_exit={} bits={} [before]",
debug!("{} add_kills_from_flow_exits flow_exit={} bits={} [before]",
self.analysis_name, flow_exit, mut_bits_to_string(bits));
bits.clone_from_slice(orig_kills.as_slice());
debug!("{:s} add_kills_from_flow_exits flow_exit={} bits={} [after]",
debug!("{} add_kills_from_flow_exits flow_exit={} bits={} [after]",
self.analysis_name, flow_exit, mut_bits_to_string(bits));
}
true
@ -453,7 +453,7 @@ impl<'a, 'tcx, O:DataFlowOperator+Clone+'static> DataFlowContext<'a, 'tcx, O> {
}
}
debug!("Dataflow result for {:s}:", self.analysis_name);
debug!("Dataflow result for {}:", self.analysis_name);
debug!("{}", {
self.pretty_print_to(box io::stderr(), blk).unwrap();
""
@ -474,7 +474,7 @@ impl<'a, 'b, 'tcx, O:DataFlowOperator> PropagationContext<'a, 'b, 'tcx, O> {
fn walk_cfg(&mut self,
cfg: &cfg::CFG,
in_out: &mut [uint]) {
debug!("DataFlowContext::walk_cfg(in_out={}) {:s}",
debug!("DataFlowContext::walk_cfg(in_out={}) {}",
bits_to_string(in_out), self.dfcx.analysis_name);
assert!(self.dfcx.bits_per_id > 0);
@ -519,7 +519,7 @@ impl<'a, 'b, 'tcx, O:DataFlowOperator> PropagationContext<'a, 'b, 'tcx, O> {
edge: &cfg::CFGEdge) {
let source = edge.source();
let cfgidx = edge.target();
debug!("{:s} propagate_bits_into_entry_set_for(pred_bits={}, {} to {})",
debug!("{} propagate_bits_into_entry_set_for(pred_bits={}, {} to {})",
self.dfcx.analysis_name, bits_to_string(pred_bits), source, cfgidx);
assert!(self.dfcx.bits_per_id > 0);
@ -530,7 +530,7 @@ impl<'a, 'b, 'tcx, O:DataFlowOperator> PropagationContext<'a, 'b, 'tcx, O> {
bitwise(on_entry, pred_bits, &self.dfcx.oper)
};
if changed {
debug!("{:s} changed entry set for {} to {}",
debug!("{} changed entry set for {} to {}",
self.dfcx.analysis_name, cfgidx,
bits_to_string(self.dfcx.on_entry.slice(start, end)));
self.changed = true;

4
src/librustc/middle/graph.rs
View File

@ -36,7 +36,7 @@ be indexed by the direction (see the type `Direction`).
#![allow(dead_code)] // still WIP
use std::fmt::{Formatter, FormatError, Show};
use std::fmt::{Formatter, Error, Show};
use std::uint;
pub struct Graph<N,E> {
@ -57,7 +57,7 @@ pub struct Edge<E> {
}
impl<E: Show> Show for Edge<E> {
fn fmt(&self, f: &mut Formatter) -> Result<(), FormatError> {
fn fmt(&self, f: &mut Formatter) -> Result<(), Error> {
write!(f, "Edge {{ next_edge: [{}, {}], source: {}, target: {}, data: {} }}",
self.next_edge[0], self.next_edge[1], self.source,
self.target, self.data)

5
src/librustc/middle/ty.rs
View File

@ -2678,9 +2678,14 @@ impl ops::Sub<TypeContents,TypeContents> for TypeContents {
}
impl fmt::Show for TypeContents {
#[cfg(stage0)]
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "TypeContents({:t})", self.bits)
}
#[cfg(not(stage0))]
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "TypeContents({:b})", self.bits)
}
}
pub fn type_interior_is_unsafe(cx: &ctxt, t: ty::t) -> bool {

2
src/librustc/middle/typeck/variance.rs
View File

@ -603,7 +603,7 @@ impl<'a, 'tcx> ConstraintContext<'a, 'tcx> {
let is_inferred;
macro_rules! cannot_happen { () => { {
panic!("invalid parent: {:s} for {:s}",
panic!("invalid parent: {} for {}",
tcx.map.node_to_string(parent_id),
tcx.map.node_to_string(param_id));
} } }

2
src/librustc_trans/back/write.rs
View File

@ -368,7 +368,7 @@ unsafe extern "C" fn diagnostic_handler(info: DiagnosticInfoRef, user: *mut c_vo
if enabled {
let loc = llvm::debug_loc_to_string(llcx, opt.debug_loc);
cgcx.handler.note(format!("optimization {:s} for {:s} at {:s}: {:s}",
cgcx.handler.note(format!("optimization {} for {} at {}: {}",
opt.kind.describe(),
pass_name,
if loc.is_empty() { "[unknown]" } else { loc.as_slice() },

10
src/librustc_trans/driver/mod.rs
View File

@ -224,13 +224,13 @@ Available lint options:
};
println!("Lint checks provided by rustc:\n");
println!(" {} {:7.7s} {}", padded("name"), "default", "meaning");
println!(" {} {:7.7s} {}", padded("----"), "-------", "-------");
println!(" {} {:7.7} {}", padded("name"), "default", "meaning");
println!(" {} {:7.7} {}", padded("----"), "-------", "-------");
let print_lints = |lints: Vec<&Lint>| {
for lint in lints.into_iter() {
let name = lint.name_lower().replace("_", "-");
println!(" {} {:7.7s} {}",
println!(" {} {:7.7} {}",
padded(name.as_slice()), lint.default_level.as_str(), lint.desc);
}
println!("\n");
@ -293,7 +293,7 @@ fn describe_debug_flags() {
for tuple in r.iter() {
match *tuple {
(ref name, ref desc, _) => {
println!(" -Z {:>20s} -- {}", *name, *desc);
println!(" -Z {:>20} -- {}", *name, *desc);
}
}
}
@ -306,7 +306,7 @@ fn describe_codegen_flags() {
Some(..) => (21, "=val"),
None => (25, "")
};
println!(" -C {:>width$s}{} -- {}", name.replace("_", "-"),
println!(" -C {:>width$}{} -- {}", name.replace("_", "-"),
extra, desc, width=width);
}
}

4
src/librustc_trans/driver/pretty.rs
View File

@ -355,8 +355,8 @@ impl UserIdentifiedItem {
fn to_one_node_id(self, user_option: &str, sess: &Session, map: &ast_map::Map) -> ast::NodeId {
let fail_because = |is_wrong_because| -> ast::NodeId {
let message =
format!("{:s} needs NodeId (int) or unique \
path suffix (b::c::d); got {:s}, which {:s}",
format!("{} needs NodeId (int) or unique \
path suffix (b::c::d); got {}, which {}",
user_option,
self.reconstructed_input(),
is_wrong_because);

2
src/librustc_trans/trans/base.rs
View File

@ -3135,7 +3135,7 @@ pub fn trans_crate<'tcx>(analysis: CrateAnalysis<'tcx>)
}
if shared_ccx.sess().count_llvm_insns() {
for (k, v) in shared_ccx.stats().llvm_insns.borrow().iter() {
println!("{:7u} {}", *v, *k);
println!("{:7} {}", *v, *k);
}
}

2
src/librustc_trans/trans/cleanup.rs
View File

@ -67,7 +67,7 @@ pub enum CleanupScopeKind<'blk, 'tcx: 'blk> {
}
impl<'blk, 'tcx: 'blk> fmt::Show for CleanupScopeKind<'blk, 'tcx> {
fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::FormatError> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
CustomScopeKind => write!(f, "CustomScopeKind"),
AstScopeKind(nid) => write!(f, "AstScopeKind({})", nid),

6
src/librustdoc/html/item_type.rs
View File

@ -75,12 +75,6 @@ impl fmt::Show for ItemType {
}
}
impl fmt::Unsigned for ItemType {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
(*self as uint).fmt(f)
}
}
pub fn shortty(item: &clean::Item) -> ItemType {
match item.inner {
clean::ModuleItem(..) => Module,

10
src/librustdoc/html/render.rs
View File

@ -437,8 +437,8 @@ fn build_index(krate: &clean::Crate, cache: &mut Cache) -> io::IoResult<String>
if i > 0 {
try!(write!(&mut w, ","));
}
try!(write!(&mut w, r#"[{:u},"{}","{}",{}"#,
item.ty, item.name, path,
try!(write!(&mut w, r#"[{},"{}","{}",{}"#,
item.ty as uint, item.name, path,
item.desc.to_json().to_string()));
match item.parent {
Some(nodeid) => {
@ -457,8 +457,8 @@ fn build_index(krate: &clean::Crate, cache: &mut Cache) -> io::IoResult<String>
if i > 0 {
try!(write!(&mut w, ","));
}
try!(write!(&mut w, r#"[{:u},"{}"]"#,
short, *fqp.last().unwrap()));
try!(write!(&mut w, r#"[{},"{}"]"#,
short as uint, *fqp.last().unwrap()));
}
try!(write!(&mut w, "]}};"));
@ -2192,7 +2192,7 @@ impl<'a> fmt::Show for Source<'a> {
}
try!(write!(fmt, "<pre class='line-numbers'>"));
for i in range(1, lines + 1) {
try!(write!(fmt, "<span id='{0:u}'>{0:1$u}</span>\n", i, cols));
try!(write!(fmt, "<span id='{0}'>{0:1$}</span>\n", i, cols));
}
try!(write!(fmt, "</pre>"));
try!(write!(fmt, "{}", highlight::highlight(s.as_slice(), None, None)));

4
src/librustdoc/lib.rs
View File

@ -168,11 +168,11 @@ pub fn main_args(args: &[String]) -> int {
if matches.opt_strs("passes").as_slice() == &["list".to_string()] {
println!("Available passes for running rustdoc:");
for &(name, _, description) in PASSES.iter() {
println!("{:>20s} - {}", name, description);
println!("{:>20} - {}", name, description);
}
println!("{}", "\nDefault passes for rustdoc:"); // FIXME: #9970
for &name in DEFAULT_PASSES.iter() {
println!("{:>20s}", name);
println!("{:>20}", name);
}
return 0;
}

2
src/libserialize/json.rs
View File

@ -2403,7 +2403,7 @@ impl<A:ToJson> ToJson for Option<A> {
impl fmt::Show for Json {
/// Encodes a json value into a string
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
self.to_writer(f).map_err(|_| fmt::WriteError)
self.to_writer(f).map_err(|_| fmt::Error)
}
}

39
src/libstd/fmt.rs
View File

@ -38,11 +38,11 @@ Some examples of the `format!` extension are:
```rust
# fn main() {
format!("Hello"); // => "Hello"
format!("Hello, {:s}!", "world"); // => "Hello, world!"
format!("The number is {:d}", 1i); // => "The number is 1"
format!("Hello, {}!", "world"); // => "Hello, world!"
format!("The number is {}", 1i); // => "The number is 1"
format!("{}", (3i, 4i)); // => "(3, 4)"
format!("{value}", value=4i); // => "4"
format!("{} {}", 1i, 2i); // => "1 2"
format!("{} {}", 1i, 2u); // => "1 2"
# }
```
@ -94,9 +94,9 @@ For example, the following `format!` expressions all use named argument:
```rust
# fn main() {
format!("{argument}", argument = "test"); // => "test"
format!("{name} {}", 1i, name = 2i); // => "2 1"
format!("{a:s} {c:d} {b}", a="a", b=(), c=3i); // => "a 3 ()"
format!("{argument}", argument = "test"); // => "test"
format!("{name} {}", 1i, name = 2i); // => "2 1"
format!("{a} {c} {b}", a="a", b=(), c=3i); // => "a 3 ()"
# }
```
@ -138,23 +138,16 @@ multiple actual types to be formatted via `{:d}` (like `i8` as well as `int`).
The current mapping of types to traits is:
* *nothing* ⇒ `Show`
* `d` ⇒ `Signed`
* `i` ⇒ `Signed`
* `u` ⇒ `Unsigned`
* `b` ⇒ `Bool`
* `c` ⇒ `Char`
* `o` ⇒ `Octal`
* `x` ⇒ `LowerHex`
* `X` ⇒ `UpperHex`
* `s` ⇒ `String`
* `p` ⇒ `Pointer`
* `t` ⇒ `Binary`
* `f` ⇒ `Float`
* `b` ⇒ `Binary`
* `e` ⇒ `LowerExp`
* `E` ⇒ `UpperExp`
What this means is that any type of argument which implements the
`std::fmt::Binary` trait can then be formatted with `{:t}`. Implementations are
`std::fmt::Binary` trait can then be formatted with `{:b}`. Implementations are
provided for these traits for a number of primitive types by the standard
library as well. If no format is specified (as in `{}` or `{:6}`), then the
format trait used is the `Show` trait. This is one of the more commonly
@ -216,7 +209,7 @@ impl fmt::Binary for Vector2D {
// Respect the formatting flags by using the helper method
// `pad_integral` on the Formatter object. See the method documentation
// for details, and the function `pad` can be used to pad strings.
let decimals = f.precision.unwrap_or(3);
let decimals = f.precision().unwrap_or(3);
let string = f64::to_str_exact(magnitude, decimals);
f.pad_integral(true, "", string.as_bytes())
}
@ -226,7 +219,7 @@ fn main() {
let myvector = Vector2D { x: 3, y: 4 };
println!("{}", myvector); // => "(3, 4)"
println!("{:10.3t}", myvector); // => " 5.000"
println!("{:10.3b}", myvector); // => " 5.000"
}
```
@ -418,10 +411,10 @@ use string;
use vec::Vec;
pub use core::fmt::{Formatter, Result, FormatWriter, rt};
pub use core::fmt::{Show, Bool, Char, Signed, Unsigned, Octal, Binary};
pub use core::fmt::{LowerHex, UpperHex, String, Pointer};
pub use core::fmt::{Float, LowerExp, UpperExp};
pub use core::fmt::{FormatError, WriteError};
pub use core::fmt::{Show, Octal, Binary};
pub use core::fmt::{LowerHex, UpperHex, Pointer};
pub use core::fmt::{LowerExp, UpperExp};
pub use core::fmt::Error;
pub use core::fmt::{Argument, Arguments, write, radix, Radix, RadixFmt};
#[doc(hidden)]
@ -444,6 +437,8 @@ pub use core::fmt::{argument, argumentstr, argumentuint};
/// let s = format_args!(fmt::format, "Hello, {}!", "world");
/// assert_eq!(s, "Hello, world!".to_string());
/// ```
#[experimental = "this is an implementation detail of format! and should not \
be called directly"]
pub fn format(args: &Arguments) -> string::String {
let mut output = Vec::new();
let _ = write!(&mut output as &mut Writer, "{}", args);
@ -454,7 +449,7 @@ impl<'a> Writer for Formatter<'a> {
fn write(&mut self, b: &[u8]) -> io::IoResult<()> {
match (*self).write(b) {
Ok(()) => Ok(()),
Err(WriteError) => Err(io::standard_error(io::OtherIoError))
Err(Error) => Err(io::standard_error(io::OtherIoError))
}
}
}

12
src/libstd/io/mod.rs
View File

@ -1034,7 +1034,7 @@ pub trait Writer {
Ok(()) => Ok(()),
Err(e) => {
self.error = Err(e);
Err(fmt::WriteError)
Err(fmt::Error)
}
}
}
@ -1081,13 +1081,13 @@ pub trait Writer {
/// Write the result of passing n through `int::to_str_bytes`.
#[inline]
fn write_int(&mut self, n: int) -> IoResult<()> {
write!(self, "{:d}", n)
write!(self, "{}", n)
}
/// Write the result of passing n through `uint::to_str_bytes`.
#[inline]
fn write_uint(&mut self, n: uint) -> IoResult<()> {
write!(self, "{:u}", n)
write!(self, "{}", n)
}
/// Write a little-endian uint (number of bytes depends on system).
@ -1896,10 +1896,8 @@ impl Default for FilePermission {
}
impl fmt::Show for FilePermission {
fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
formatter.fill = '0';
formatter.width = Some(4);
(&self.bits as &fmt::Octal).fmt(formatter)
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{:04o}", self.bits)
}
}

8
src/libstd/macros.rs
View File

@ -240,6 +240,7 @@ macro_rules! unimplemented(
/// format!("x = {}, y = {y}", 10i, y = 30i);
/// ```
#[macro_export]
#[stable]
macro_rules! format(
($($arg:tt)*) => (
format_args!(::std::fmt::format, $($arg)*)
@ -259,15 +260,18 @@ macro_rules! format(
/// write!(&mut w, "formatted {}", "arguments");
/// ```
#[macro_export]
#[stable]
macro_rules! write(
($dst:expr, $($arg:tt)*) => ({
format_args_method!($dst, write_fmt, $($arg)*)
let dst = &mut *$dst;
format_args!(|args| { dst.write_fmt(args) }, $($arg)*)
})
)
/// Equivalent to the `write!` macro, except that a newline is appended after
/// the message is written.
#[macro_export]
#[stable]
macro_rules! writeln(
($dst:expr, $fmt:expr $($arg:tt)*) => (
write!($dst, concat!($fmt, "\n") $($arg)*)
@ -277,6 +281,7 @@ macro_rules! writeln(
/// Equivalent to the `println!` macro except that a newline is not printed at
/// the end of the message.
#[macro_export]
#[stable]
macro_rules! print(
($($arg:tt)*) => (format_args!(::std::io::stdio::print_args, $($arg)*))
)
@ -294,6 +299,7 @@ macro_rules! print(
/// println!("format {} arguments", "some");
/// ```
#[macro_export]
#[stable]
macro_rules! println(
($($arg:tt)*) => (format_args!(::std::io::stdio::println_args, $($arg)*))
)

2
src/libsyntax/ast.rs
View File

@ -95,7 +95,7 @@ impl Ident {
}
pub fn encode_with_hygiene(&self) -> String {
format!("\x00name_{:u},ctxt_{:u}\x00",
format!("\x00name_{},ctxt_{}\x00",
self.name.uint(),
self.ctxt)
}

3
src/libsyntax/ext/base.rs
View File

@ -361,9 +361,6 @@ fn initial_syntax_expander_table(ecfg: &expand::ExpansionConfig) -> SyntaxEnv {
syntax_expanders.insert(intern("format_args"),
builtin_normal_expander(
ext::format::expand_format_args));
syntax_expanders.insert(intern("format_args_method"),
builtin_normal_expander(
ext::format::expand_format_args_method));
syntax_expanders.insert(intern("env"),
builtin_normal_expander(
ext::env::expand_env));

2
src/libsyntax/ext/deriving/generic/mod.rs
View File

@ -887,7 +887,7 @@ impl<'a> MethodDef<'a> {
// a series of let statements mapping each self_arg to a uint
// corresponding to its variant index.
let vi_idents: Vec<ast::Ident> = self_arg_names.iter()
.map(|name| { let vi_suffix = format!("{:s}_vi", name.as_slice());
.map(|name| { let vi_suffix = format!("{}_vi", name.as_slice());
cx.ident_of(vi_suffix.as_slice()) })
.collect::<Vec<ast::Ident>>();

22
src/libsyntax/ext/format.rs
View File

@ -237,7 +237,7 @@ impl<'a, 'b> Context<'a, 'b> {
match arg {
Exact(arg) => {
if self.args.len() <= arg {
let msg = format!("invalid reference to argument `{}` ({:s})",
let msg = format!("invalid reference to argument `{}` ({})",
arg, self.describe_num_args());
self.ecx.span_err(self.fmtsp, msg.as_slice());
@ -670,17 +670,11 @@ impl<'a, 'b> Context<'a, 'b> {
Known(ref tyname) => {
match tyname.as_slice() {
"" => "Show",
"b" => "Bool",
"c" => "Char",
"d" | "i" => "Signed",
"e" => "LowerExp",
"E" => "UpperExp",
"f" => "Float",
"o" => "Octal",
"p" => "Pointer",
"s" => "String",
"t" => "Binary",
"u" => "Unsigned",
"b" => "Binary",
"x" => "LowerHex",
"X" => "UpperHex",
_ => {
@ -724,18 +718,6 @@ pub fn expand_format_args<'cx>(ecx: &'cx mut ExtCtxt, sp: Span,
}
}
pub fn expand_format_args_method<'cx>(ecx: &'cx mut ExtCtxt, sp: Span,
tts: &[ast::TokenTree]) -> Box<base::MacResult+'cx> {
match parse_args(ecx, sp, true, tts) {
(invocation, Some((efmt, args, order, names))) => {
MacExpr::new(expand_preparsed_format_args(ecx, sp, invocation, efmt,
args, order, names))
}
(_, None) => MacExpr::new(ecx.expr_uint(sp, 2))
}
}
/// Take the various parts of `format_args!(extra, efmt, args...,
/// name=names...)` and construct the appropriate formatting
/// expression.

2
src/libsyntax/ext/mtwt.rs
View File

@ -131,7 +131,7 @@ fn new_sctable_internal() -> SCTable {
pub fn display_sctable(table: &SCTable) {
error!("SC table:");
for (idx,val) in table.table.borrow().iter().enumerate() {
error!("{:4u} : {}",idx,val);
error!("{:4} : {}",idx,val);
}
}

4
src/libterm/terminfo/parm.rs
View File

@ -497,8 +497,8 @@ fn format(val: Param, op: FormatOp, flags: Flags) -> Result<Vec<u8> ,String> {
let mut s = match val {
Number(d) => {
let s = match (op, flags.sign) {
(FormatDigit, true) => format!("{:+d}", d).into_bytes(),
(FormatDigit, false) => format!("{:d}", d).into_bytes(),
(FormatDigit, true) => format!("{:+}", d).into_bytes(),
(FormatDigit, false) => format!("{}", d).into_bytes(),
(FormatOctal, _) => format!("{:o}", d).into_bytes(),
(FormatHex, _) => format!("{:x}", d).into_bytes(),
(FormatHEX, _) => format!("{:X}", d).into_bytes(),

4
src/libtest/lib.rs
View File

@ -687,14 +687,14 @@ impl<T: Writer> ConsoleTestState<T> {
improved += 1;
try!(self.write_plain(format!(": {}", *k).as_slice()));
try!(self.write_improved());
try!(self.write_plain(format!(" by {:.2f}%\n",
try!(self.write_plain(format!(" by {:.2}%\n",
pct as f64).as_slice()));
}
Regression(pct) => {
regressed += 1;
try!(self.write_plain(format!(": {}", *k).as_slice()));
try!(self.write_regressed());
try!(self.write_plain(format!(" by {:.2f}%\n",
try!(self.write_plain(format!(" by {:.2}%\n",
pct as f64).as_slice()));
}
}

38
src/libtime/lib.rs
View File

@ -602,8 +602,8 @@ impl<'a> fmt::Show for TmFmt<'a> {
match ch {
'G' => write!(fmt, "{}", year),
'g' => write!(fmt, "{:02d}", (year % 100 + 100) % 100),
'V' => write!(fmt, "{:02d}", days / 7 + 1),
'g' => write!(fmt, "{:02}", (year % 100 + 100) % 100),
'V' => write!(fmt, "{:02}", days / 7 + 1),
_ => Ok(())
}
}
@ -663,7 +663,7 @@ impl<'a> fmt::Show for TmFmt<'a> {
11 => "Dec",
_ => return die()
},
'C' => return write!(fmt, "{:02d}", (tm.tm_year as int + 1900) / 100),
'C' => return write!(fmt, "{:02}", (tm.tm_year as int + 1900) / 100),
'c' => {
try!(parse_type(fmt, 'a', tm));
try!(' '.fmt(fmt));
@ -682,9 +682,9 @@ impl<'a> fmt::Show for TmFmt<'a> {
try!('/'.fmt(fmt));
return parse_type(fmt, 'y', tm);
}
'd' => return write!(fmt, "{:02d}", tm.tm_mday),
'e' => return write!(fmt, "{:2d}", tm.tm_mday),
'f' => return write!(fmt, "{:09d}", tm.tm_nsec),
'd' => return write!(fmt, "{:02}", tm.tm_mday),
'e' => return write!(fmt, "{:2}", tm.tm_mday),
'f' => return write!(fmt, "{:09}", tm.tm_nsec),
'F' => {
try!(parse_type(fmt, 'Y', tm));
try!('-'.fmt(fmt));
@ -694,23 +694,23 @@ impl<'a> fmt::Show for TmFmt<'a> {
}
'G' => return iso_week(fmt, 'G', tm),
'g' => return iso_week(fmt, 'g', tm),
'H' => return write!(fmt, "{:02d}", tm.tm_hour),
'H' => return write!(fmt, "{:02}", tm.tm_hour),
'I' => {
let mut h = tm.tm_hour;
if h == 0 { h = 12 }
if h > 12 { h -= 12 }
return write!(fmt, "{:02d}", h)
return write!(fmt, "{:02}", h)
}
'j' => return write!(fmt, "{:03d}", tm.tm_yday + 1),
'k' => return write!(fmt, "{:2d}", tm.tm_hour),
'j' => return write!(fmt, "{:03}", tm.tm_yday + 1),
'k' => return write!(fmt, "{:2}", tm.tm_hour),
'l' => {
let mut h = tm.tm_hour;
if h == 0 { h = 12 }
if h > 12 { h -= 12 }
return write!(fmt, "{:2d}", h)
return write!(fmt, "{:2}", h)
}
'M' => return write!(fmt, "{:02d}", tm.tm_min),
'm' => return write!(fmt, "{:02d}", tm.tm_mon + 1),
'M' => return write!(fmt, "{:02}", tm.tm_min),
'm' => return write!(fmt, "{:02}", tm.tm_mon + 1),
'n' => "\n",
'P' => if (tm.tm_hour as int) < 12 { "am" } else { "pm" },
'p' => if (tm.tm_hour as int) < 12 { "AM" } else { "PM" },
@ -728,7 +728,7 @@ impl<'a> fmt::Show for TmFmt<'a> {
try!(' '.fmt(fmt));
return parse_type(fmt, 'p', tm);
}
'S' => return write!(fmt, "{:02d}", tm.tm_sec),
'S' => return write!(fmt, "{:02}", tm.tm_sec),
's' => return write!(fmt, "{}", tm.to_timespec().sec),
'T' | 'X' => {
try!(parse_type(fmt, 'H', tm));
@ -738,7 +738,7 @@ impl<'a> fmt::Show for TmFmt<'a> {
return parse_type(fmt, 'S', tm);
}
't' => "\t",
'U' => return write!(fmt, "{:02d}", (tm.tm_yday - tm.tm_wday + 7) / 7),
'U' => return write!(fmt, "{:02}", (tm.tm_yday - tm.tm_wday + 7) / 7),
'u' => {
let i = tm.tm_wday as int;
return (if i == 0 { 7 } else { i }).fmt(fmt);
@ -752,19 +752,19 @@ impl<'a> fmt::Show for TmFmt<'a> {
return parse_type(fmt, 'Y', tm);
}
'W' => {
return write!(fmt, "{:02d}",
return write!(fmt, "{:02}",
(tm.tm_yday - (tm.tm_wday - 1 + 7) % 7 + 7) / 7)
}
'w' => return (tm.tm_wday as int).fmt(fmt),
'Y' => return (tm.tm_year as int + 1900).fmt(fmt),
'y' => return write!(fmt, "{:02d}", (tm.tm_year as int + 1900) % 100),
'y' => return write!(fmt, "{:02}", (tm.tm_year as int + 1900) % 100),
'Z' => if tm.tm_gmtoff == 0_i32 { "GMT"} else { "" }, // FIXME (#2350): support locale
'z' => {
let sign = if tm.tm_gmtoff > 0_i32 { '+' } else { '-' };
let mut m = tm.tm_gmtoff.abs() / 60_i32;
let h = m / 60_i32;
m -= h * 60_i32;
return write!(fmt, "{}{:02d}{:02d}", sign, h, m);
return write!(fmt, "{}{:02}{:02}", sign, h, m);
}
'+' => return tm.rfc3339().fmt(fmt),
'%' => "%",
@ -806,7 +806,7 @@ impl<'a> fmt::Show for TmFmt<'a> {
let mut m = self.tm.tm_gmtoff.abs() / 60_i32;
let h = m / 60_i32;
m -= h * 60_i32;
write!(fmt, "{}{}{:02d}:{:02d}", s, sign, h as int, m as int)
write!(fmt, "{}{}{:02}:{:02}", s, sign, h as int, m as int)
}
}
}

2
src/test/bench/core-set.rs
View File

@ -148,7 +148,7 @@ fn write_header(header: &str) {
}
fn write_row(label: &str, value: Duration) {
println!("{:30s} {} s\n", label, value);
println!("{:30} {} s\n", label, value);
}
fn write_results(label: &str, results: &Results) {

2
src/test/bench/noise.rs
View File

@ -115,7 +115,7 @@ fn main() {
for y in range(0u, 256) {
for x in range(0u, 256) {
let idx = (pixels[y*256+x] / 0.2) as uint;
print!("{:c}", symbols[idx]);
print!("{}", symbols[idx]);
}
print!("\n");
}

2
src/test/bench/shootout-k-nucleotide-pipes.rs
View File

@ -63,7 +63,7 @@ fn sort_and_fmt(mm: &HashMap<Vec<u8> , uint>, total: uint) -> String {
let mut buffer = String::new();
for &(ref k, v) in pairs_sorted.iter() {
buffer.push_str(format!("{} {:0.3f}\n",
buffer.push_str(format!("{} {:0.3}\n",
k.as_slice()
.to_ascii()
.to_uppercase()

2
src/test/bench/shootout-k-nucleotide.rs
View File

@ -266,7 +266,7 @@ fn print_frequencies(frequencies: &Table, frame: uint) {
}
for &(count, key) in vector.iter().rev() {
println!("{} {:.3f}",
println!("{} {:.3}",
key.unpack(frame).as_slice(),
(count as f32 * 100.0) / (total_count as f32));
}

4
src/test/bench/shootout-nbody.rs
View File

@ -179,11 +179,11 @@ fn main() {
let mut bodies = BODIES;
offset_momentum(&mut bodies);
println!("{:.9f}", energy(&bodies));
println!("{:.9}", energy(&bodies));
advance(&mut bodies, 0.01, n);
println!("{:.9f}", energy(&bodies));
println!("{:.9}", energy(&bodies));
}
/// Pop a mutable reference off the head of a slice, mutating the slice to no

2
src/test/bench/shootout-spectralnorm.rs
View File

@ -59,7 +59,7 @@ fn main() {
} else {
from_str(args[1].as_slice()).unwrap()
});
println!("{:.9f}", answer);
println!("{:.9}", answer);
}
fn spectralnorm(n: uint) -> f64 {

4
src/test/compile-fail/ifmt-bad-arg.rs
View File

@ -23,8 +23,8 @@ fn main() {
format!("{foo}", 1, foo=2); //~ ERROR: argument never used
format!("", foo=2); //~ ERROR: named argument never used
format!("{0:d} {0:s}", 1); //~ ERROR: redeclared with type `s`
format!("{foo:d} {foo:s}", foo=1); //~ ERROR: redeclared with type `s`
format!("{0:x} {0:X}", 1); //~ ERROR: redeclared with type `X`
format!("{foo:x} {foo:X}", foo=1); //~ ERROR: redeclared with type `X`
format!("{foo}", foo=1, foo=2); //~ ERROR: duplicate argument
format!("", foo=1, 2); //~ ERROR: positional arguments cannot follow

4
src/test/compile-fail/ifmt-unimpl.rs
View File

@ -9,6 +9,6 @@
// except according to those terms.
fn main() {
format!("{:d}", "3");
//~^ ERROR: the trait `core::fmt::Signed` is not implemented
format!("{:X}", "3");
//~^ ERROR: the trait `core::fmt::UpperHex` is not implemented
}

2
src/test/compile-fail/issue-1448-2.rs
View File

@ -13,5 +13,5 @@
fn foo(a: uint) -> uint { a }
fn main() {
println!("{:u}", foo(10i)); //~ ERROR mismatched types
println!("{}", foo(10i)); //~ ERROR mismatched types
}

11
src/test/compile-fail/issue-14853.rs
View File

@ -10,17 +10,18 @@
use std::fmt::Show;
trait Str {}
trait Something {
fn yay<T: Show>(_: Option<Self>, thing: &[T]) -> String {
}
fn yay<T: Show>(_: Option<Self>, thing: &[T]);
}
struct X { data: u32 }
impl Something for X {
fn yay<T: Str>(_:Option<X>, thing: &[T]) -> String {
//~^ ERROR in method `yay`, type parameter 0 requires bound `core::str::Str`, which is not required
format!("{:s}", thing[0])
fn yay<T: Str>(_:Option<X>, thing: &[T]) {
//~^ ERROR in method `yay`, type parameter 0 requires bound `Str`, which is not required
}
}

100
src/test/run-pass/ifmt.rs
View File

@ -22,12 +22,12 @@ struct A;
struct B;
struct C;
impl fmt::Signed for A {
impl fmt::LowerHex for A {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.write("aloha".as_bytes())
}
}
impl fmt::Signed for B {
impl fmt::UpperHex for B {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.write("adios".as_bytes())
}
@ -55,71 +55,71 @@ pub fn main() {
t!(format!("{}", 'a'), "a");
// At least exercise all the formats
t!(format!("{:b}", true), "true");
t!(format!("{:c}", '☃'), "☃");
t!(format!("{:d}", 10i), "10");
t!(format!("{:i}", 10i), "10");
t!(format!("{:u}", 10u), "10");
t!(format!("{}", true), "true");
t!(format!("{}", '☃'), "☃");
t!(format!("{}", 10i), "10");
t!(format!("{}", 10i), "10");
t!(format!("{}", 10u), "10");
t!(format!("{:o}", 10u), "12");
t!(format!("{:x}", 10u), "a");
t!(format!("{:X}", 10u), "A");
t!(format!("{:s}", "foo"), "foo");
t!(format!("{:s}", "foo".to_string()), "foo");
t!(format!("{}", "foo"), "foo");
t!(format!("{}", "foo".to_string()), "foo");
t!(format!("{:p}", 0x1234 as *const int), "0x1234");
t!(format!("{:p}", 0x1234 as *mut int), "0x1234");
t!(format!("{:d}", A), "aloha");
t!(format!("{:d}", B), "adios");
t!(format!("foo {:s} ☃☃☃☃☃☃", "bar"), "foo bar ☃☃☃☃☃☃");
t!(format!("{:x}", A), "aloha");
t!(format!("{:X}", B), "adios");
t!(format!("foo {} ☃☃☃☃☃☃", "bar"), "foo bar ☃☃☃☃☃☃");
t!(format!("{1} {0}", 0i, 1i), "1 0");
t!(format!("{foo} {bar}", foo=0i, bar=1i), "0 1");
t!(format!("{foo} {1} {bar} {0}", 0i, 1i, foo=2i, bar=3i), "2 1 3 0");
t!(format!("{} {0}", "a"), "a a");
t!(format!("{foo_bar}", foo_bar=1i), "1");
t!(format!("{:d}", 5i + 5i), "10");
t!(format!("{}", 5i + 5i), "10");
t!(format!("{:#4}", C), "☃123");
let a: &fmt::Show = &1i;
t!(format!("{}", a), "1");
// Formatting strings and their arguments
t!(format!("{:s}", "a"), "a");
t!(format!("{:4s}", "a"), "a ");
t!(format!("{:4s}", "☃"), "☃ ");
t!(format!("{:>4s}", "a"), " a");
t!(format!("{:<4s}", "a"), "a ");
t!(format!("{:^5s}", "a"), " a ");
t!(format!("{:^5s}", "aa"), " aa ");
t!(format!("{:^4s}", "a"), " a ");
t!(format!("{:^4s}", "aa"), " aa ");
t!(format!("{:.4s}", "a"), "a");
t!(format!("{:4.4s}", "a"), "a ");
t!(format!("{:4.4s}", "aaaaaaaaaaaaaaaaaa"), "aaaa");
t!(format!("{:<4.4s}", "aaaaaaaaaaaaaaaaaa"), "aaaa");
t!(format!("{:>4.4s}", "aaaaaaaaaaaaaaaaaa"), "aaaa");
t!(format!("{:^4.4s}", "aaaaaaaaaaaaaaaaaa"), "aaaa");
t!(format!("{:>10.4s}", "aaaaaaaaaaaaaaaaaa"), "aaaa");
t!(format!("{:2.4s}", "aaaaa"), "aaaa");
t!(format!("{:2.4s}", "aaaa"), "aaaa");
t!(format!("{:2.4s}", "aaa"), "aaa");
t!(format!("{:2.4s}", "aa"), "aa");
t!(format!("{:2.4s}", "a"), "a ");
t!(format!("{:0>2s}", "a"), "0a");
t!(format!("{:.*s}", 4, "aaaaaaaaaaaaaaaaaa"), "aaaa");
t!(format!("{:.1$s}", "aaaaaaaaaaaaaaaaaa", 4), "aaaa");
t!(format!("{:.a$s}", "aaaaaaaaaaaaaaaaaa", a=4), "aaaa");
t!(format!("{:1$s}", "a", 4), "a ");
t!(format!("{1:0$s}", 4, "a"), "a ");
t!(format!("{:a$s}", "a", a=4), "a ");
t!(format!("{:-#s}", "a"), "a");
t!(format!("{:+#s}", "a"), "a");
t!(format!("{}", "a"), "a");
t!(format!("{:4}", "a"), "a ");
t!(format!("{:4}", "☃"), "☃ ");
t!(format!("{:>4}", "a"), " a");
t!(format!("{:<4}", "a"), "a ");
t!(format!("{:^5}", "a"), " a ");
t!(format!("{:^5}", "aa"), " aa ");
t!(format!("{:^4}", "a"), " a ");
t!(format!("{:^4}", "aa"), " aa ");
t!(format!("{:.4}", "a"), "a");
t!(format!("{:4.4}", "a"), "a ");
t!(format!("{:4.4}", "aaaaaaaaaaaaaaaaaa"), "aaaa");
t!(format!("{:<4.4}", "aaaaaaaaaaaaaaaaaa"), "aaaa");
t!(format!("{:>4.4}", "aaaaaaaaaaaaaaaaaa"), "aaaa");
t!(format!("{:^4.4}", "aaaaaaaaaaaaaaaaaa"), "aaaa");
t!(format!("{:>10.4}", "aaaaaaaaaaaaaaaaaa"), "aaaa");
t!(format!("{:2.4}", "aaaaa"), "aaaa");
t!(format!("{:2.4}", "aaaa"), "aaaa");
t!(format!("{:2.4}", "aaa"), "aaa");
t!(format!("{:2.4}", "aa"), "aa");
t!(format!("{:2.4}", "a"), "a ");
t!(format!("{:0>2}", "a"), "0a");
t!(format!("{:.*}", 4, "aaaaaaaaaaaaaaaaaa"), "aaaa");
t!(format!("{:.1$}", "aaaaaaaaaaaaaaaaaa", 4), "aaaa");
t!(format!("{:.a$}", "aaaaaaaaaaaaaaaaaa", a=4), "aaaa");
t!(format!("{:1$}", "a", 4), "a ");
t!(format!("{1:0$}", 4, "a"), "a ");
t!(format!("{:a$}", "a", a=4), "a ");
t!(format!("{:-#}", "a"), "a");
t!(format!("{:+#}", "a"), "a");
// Some float stuff
t!(format!("{:f}", 1.0f32), "1");
t!(format!("{:f}", 1.0f64), "1");
t!(format!("{:.3f}", 1.0f64), "1.000");
t!(format!("{:10.3f}", 1.0f64), " 1.000");
t!(format!("{:+10.3f}", 1.0f64), " +1.000");
t!(format!("{:+10.3f}", -1.0f64), " -1.000");
t!(format!("{:}", 1.0f32), "1");
t!(format!("{:}", 1.0f64), "1");
t!(format!("{:.3}", 1.0f64), "1.000");
t!(format!("{:10.3}", 1.0f64), " 1.000");
t!(format!("{:+10.3}", 1.0f64), " +1.000");
t!(format!("{:+10.3}", -1.0f64), " -1.000");
t!(format!("{:e}", 1.2345e6f32), "1.2345e6");
t!(format!("{:e}", 1.2345e6f64), "1.2345e6");
@ -164,7 +164,7 @@ fn test_write() {
{
let w = &mut buf as &mut io::Writer;
write!(w, "{foo}", foo=4i);
write!(w, "{:s}", "hello");
write!(w, "{}", "hello");
writeln!(w, "{}", "line");
writeln!(w, "{foo}", foo="bar");
}

10
src/test/run-pass/realloc-16687.rs
View File

@ -46,19 +46,19 @@ unsafe fn test_triangle() -> bool {
static PRINT : bool = false;
unsafe fn allocate(size: uint, align: uint) -> *mut u8 {
if PRINT { println!("allocate(size={:u} align={:u})", size, align); }
if PRINT { println!("allocate(size={} align={})", size, align); }
let ret = heap::allocate(size, align);
if ret.is_null() { alloc::oom() }
if PRINT { println!("allocate(size={:u} align={:u}) ret: 0x{:010x}",
if PRINT { println!("allocate(size={} align={}) ret: 0x{:010x}",
size, align, ret as uint);
}
ret
}
unsafe fn deallocate(ptr: *mut u8, size: uint, align: uint) {
if PRINT { println!("deallocate(ptr=0x{:010x} size={:u} align={:u})",
if PRINT { println!("deallocate(ptr=0x{:010x} size={} align={})",
ptr as uint, size, align);
}
@ -66,7 +66,7 @@ unsafe fn test_triangle() -> bool {
}
unsafe fn reallocate(ptr: *mut u8, old_size: uint, size: uint, align: uint) -> *mut u8 {
if PRINT {
println!("reallocate(ptr=0x{:010x} old_size={:u} size={:u} align={:u})",
println!("reallocate(ptr=0x{:010x} old_size={} size={} align={})",
ptr as uint, old_size, size, align);
}
@ -74,7 +74,7 @@ unsafe fn test_triangle() -> bool {
if ret.is_null() { alloc::oom() }
if PRINT {
println!("reallocate(ptr=0x{:010x} old_size={:u} size={:u} align={:u}) \
println!("reallocate(ptr=0x{:010x} old_size={} size={} align={}) \
ret: 0x{:010x}",
ptr as uint, old_size, size, align, ret as uint);
}