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libcore: Fix obsolete syntax in extfmt
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doc/rust.md
20
doc/rust.md
@ -206,7 +206,7 @@ The keywords are the following strings:
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~~~~~~~~ {.keyword}
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as
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break
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const copy
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copy
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do drop
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else enum extern
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false fn for
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@ -1099,7 +1099,7 @@ const_item : "const" ident ':' type '=' expr ';' ;
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A *constant* is a named value stored in read-only memory in a crate.
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The value bound to a constant is evaluated at compile time.
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Constants are declared with the `const` keyword.
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Constants are declared with the `static` keyword.
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A constant item must have an expression giving its definition.
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The definition expression of a constant is limited to expression forms that can be evaluated at compile time.
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@ -1108,18 +1108,18 @@ The derived types are borrowed pointers, static arrays, tuples, and structs.
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Borrowed pointers must be have the `'static` lifetime.
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~~~~
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const bit1: uint = 1 << 0;
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const bit2: uint = 1 << 1;
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static bit1: uint = 1 << 0;
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static bit2: uint = 1 << 1;
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const bits: [uint * 2] = [bit1, bit2];
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const string: &'static str = "bitstring";
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static bits: [uint, ..2] = [bit1, bit2];
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static string: &'static str = "bitstring";
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struct BitsNStrings {
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mybits: [uint *2],
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mybits: [uint, ..2],
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mystring: &'self str
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}
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const bits_n_strings: BitsNStrings<'static> = BitsNStrings {
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static bits_n_strings: BitsNStrings<'static> = BitsNStrings {
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mybits: bits,
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mystring: string
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};
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@ -1206,10 +1206,10 @@ For example:
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~~~~
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trait Num {
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static fn from_int(n: int) -> Self;
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fn from_int(n: int) -> Self;
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}
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impl Num for float {
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static fn from_int(n: int) -> float { n as float }
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fn from_int(n: int) -> float { n as float }
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}
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let x: float = Num::from_int(42);
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~~~~
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@ -394,7 +394,7 @@ copying.
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# Circle(Point, float), // origin, radius
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# Rectangle(Point, Size) // upper-left, dimensions
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# }
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# const tau: float = 6.28f;
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# static tau: float = 6.28f;
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fn compute_area(shape: &Shape) -> float {
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match *shape {
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Circle(_, radius) => 0.5 * tau * radius * radius,
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@ -237,7 +237,7 @@ can specify a variable's type by following it with a colon, then the type
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name. Constants, on the other hand, always require a type annotation.
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~~~~
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const monster_factor: float = 57.8;
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static monster_factor: float = 57.8;
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let monster_size = monster_factor * 10.0;
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let monster_size: int = 50;
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~~~~
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@ -916,7 +916,7 @@ use core::libc::types::os::arch::c95::size_t;
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struct Blob { priv ptr: *c_void }
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impl Blob {
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static fn new() -> Blob {
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fn new() -> Blob {
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unsafe { Blob{ptr: calloc(1, int::bytes as size_t)} }
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}
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}
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@ -1222,7 +1222,7 @@ pointers to vectors are also called 'slices'.
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# Black, BlizzardBlue, Blue
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# }
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// A fixed-size stack vector
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let stack_crayons: [Crayon * 3] = [Almond, AntiqueBrass, Apricot];
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let stack_crayons: [Crayon, ..3] = [Almond, AntiqueBrass, Apricot];
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// A borrowed pointer to stack-allocated vector
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let stack_crayons: &[Crayon] = &[Aquamarine, Asparagus, AtomicTangerine];
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@ -1264,7 +1264,7 @@ Square brackets denote indexing into a vector:
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# Aquamarine, Asparagus, AtomicTangerine,
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# BananaMania, Beaver, Bittersweet };
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# fn draw_scene(c: Crayon) { }
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let crayons: [Crayon * 3] = [BananaMania, Beaver, Bittersweet];
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let crayons: [Crayon, ..3] = [BananaMania, Beaver, Bittersweet];
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match crayons[0] {
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Bittersweet => draw_scene(crayons[0]),
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_ => ()
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@ -1274,7 +1274,7 @@ match crayons[0] {
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A vector can be destructured using pattern matching:
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~~~~
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let numbers: [int * 3] = [1, 2, 3];
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let numbers: [int, ..3] = [1, 2, 3];
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let score = match numbers {
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[] => 0,
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[a] => a * 10,
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@ -1768,32 +1768,25 @@ s.draw_borrowed();
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(&@~s).draw_borrowed();
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~~~
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Implementations may also define _static_ methods,
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which don't have an explicit `self` argument.
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The `static` keyword distinguishes static methods from methods that have a `self`:
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Implementations may also define standalone (sometimes called "static")
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methods. The absence of a `self` paramater distinguishes such methods.
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These methods are the preferred way to define constructor functions.
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~~~~ {.xfail-test}
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impl Circle {
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fn area(&self) -> float { ... }
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static fn new(area: float) -> Circle { ... }
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fn new(area: float) -> Circle { ... }
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}
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~~~~
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> ***Note***: In the future the `static` keyword will be removed and static methods
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> will be distinguished solely by the presence or absence of the `self` argument.
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> In the current langugage instance methods may also be declared without an explicit
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> `self` argument, in which case `self` is an implicit reference.
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> That form of method is deprecated.
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Constructors are one common application for static methods, as in `new` above.
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To call a static method, you have to prefix it with the type name and a double colon:
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To call such a method, just prefix it with the type name and a double colon:
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~~~~
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# use core::float::consts::pi;
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# use core::float::sqrt;
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struct Circle { radius: float }
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impl Circle {
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static fn new(area: float) -> Circle { Circle { radius: sqrt(area / pi) } }
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fn new(area: float) -> Circle { Circle { radius: sqrt(area / pi) } }
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}
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let c = Circle::new(42.5);
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~~~~
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@ -2055,22 +2048,23 @@ second parameter of type `self`.
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In contrast, in the `impl`, `equals` takes a second parameter of
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type `int`, only using `self` as the name of the receiver.
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Traits can also define static methods which are called by prefixing
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the method name with the trait name.
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The compiler will use type inference to decide which implementation to call.
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Just as in type implementations, traits can define standalone (static)
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methods. These methods are called by prefixing the method name with the trait
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name and a double colon. The compiler uses type inference to decide which
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implementation to use.
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~~~~
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trait Shape { static fn new(area: float) -> Self; }
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trait Shape { fn new(area: float) -> Self; }
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# use core::float::consts::pi;
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# use core::float::sqrt;
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struct Circle { radius: float }
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struct Square { length: float }
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impl Shape for Circle {
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static fn new(area: float) -> Circle { Circle { radius: sqrt(area / pi) } }
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fn new(area: float) -> Circle { Circle { radius: sqrt(area / pi) } }
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}
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impl Shape for Square {
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static fn new(area: float) -> Square { Square { length: sqrt(area) } }
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fn new(area: float) -> Square { Square { length: sqrt(area) } }
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}
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let area = 42.5;
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@ -2312,7 +2306,7 @@ them. The `pub` keyword modifies an item's visibility, making it
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visible outside its containing module. An expression with `::`, like
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`farm::chicken`, can name an item outside of its containing
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module. Items, such as those declared with `fn`, `struct`, `enum`,
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`type`, or `const`, are module-private by default.
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`type`, or `static`, are module-private by default.
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Visibility restrictions in Rust exist only at module boundaries. This
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is quite different from most object-oriented languages that also
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@ -81,7 +81,7 @@ fn run_rfail_test(config: config, props: TestProps, testfile: &Path) {
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};
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// The value our Makefile configures valgrind to return on failure
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const valgrind_err: int = 100;
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static valgrind_err: int = 100;
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if ProcRes.status == valgrind_err {
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fatal_ProcRes(~"run-fail test isn't valgrind-clean!", ProcRes);
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}
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@ -92,7 +92,7 @@ fn run_rfail_test(config: config, props: TestProps, testfile: &Path) {
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fn check_correct_failure_status(ProcRes: ProcRes) {
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// The value the rust runtime returns on failure
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const rust_err: int = 101;
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static rust_err: int = 101;
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if ProcRes.status != rust_err {
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fatal_ProcRes(
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fmt!("failure produced the wrong error code: %d",
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@ -483,12 +483,12 @@ pub mod rt {
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use vec;
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use option::{Some, None, Option};
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pub const flag_none : u32 = 0u32;
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pub const flag_left_justify : u32 = 0b00000000000001u32;
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pub const flag_left_zero_pad : u32 = 0b00000000000010u32;
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pub const flag_space_for_sign : u32 = 0b00000000000100u32;
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pub const flag_sign_always : u32 = 0b00000000001000u32;
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pub const flag_alternate : u32 = 0b00000000010000u32;
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pub static flag_none : u32 = 0u32;
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pub static flag_left_justify : u32 = 0b00000000000001u32;
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pub static flag_left_zero_pad : u32 = 0b00000000000010u32;
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pub static flag_space_for_sign : u32 = 0b00000000000100u32;
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pub static flag_sign_always : u32 = 0b00000000001000u32;
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pub static flag_alternate : u32 = 0b00000000010000u32;
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pub enum Count { CountIs(uint), CountImplied, }
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@ -501,7 +501,7 @@ pub mod rt {
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ty: Ty,
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}
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pub pure fn conv_int(cv: Conv, i: int, buf: &mut ~str) {
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pub fn conv_int(cv: Conv, i: int, buf: &mut ~str) {
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let radix = 10;
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let prec = get_int_precision(cv);
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let mut s : ~str = uint_to_str_prec(int::abs(i) as uint, radix, prec);
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@ -517,7 +517,7 @@ pub mod rt {
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} else { Some('-') };
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unsafe { pad(cv, s, head, PadSigned, buf) };
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}
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pub pure fn conv_uint(cv: Conv, u: uint, buf: &mut ~str) {
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pub fn conv_uint(cv: Conv, u: uint, buf: &mut ~str) {
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let prec = get_int_precision(cv);
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let mut rs =
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match cv.ty {
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@ -529,16 +529,16 @@ pub mod rt {
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};
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unsafe { pad(cv, rs, None, PadUnsigned, buf) };
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}
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pub pure fn conv_bool(cv: Conv, b: bool, buf: &mut ~str) {
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pub fn conv_bool(cv: Conv, b: bool, buf: &mut ~str) {
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let s = if b { "true" } else { "false" };
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// run the boolean conversion through the string conversion logic,
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// giving it the same rules for precision, etc.
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conv_str(cv, s, buf);
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}
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pub pure fn conv_char(cv: Conv, c: char, buf: &mut ~str) {
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pub fn conv_char(cv: Conv, c: char, buf: &mut ~str) {
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unsafe { pad(cv, "", Some(c), PadNozero, buf) };
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}
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pub pure fn conv_str(cv: Conv, s: &str, buf: &mut ~str) {
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pub fn conv_str(cv: Conv, s: &str, buf: &mut ~str) {
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// For strings, precision is the maximum characters
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// displayed
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let mut unpadded = match cv.precision {
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@ -551,7 +551,7 @@ pub mod rt {
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};
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unsafe { pad(cv, unpadded, None, PadNozero, buf) };
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}
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pub pure fn conv_float(cv: Conv, f: float, buf: &mut ~str) {
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pub fn conv_float(cv: Conv, f: float, buf: &mut ~str) {
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let (to_str, digits) = match cv.precision {
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CountIs(c) => (float::to_str_exact, c as uint),
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CountImplied => (float::to_str_digits, 6u)
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@ -568,7 +568,7 @@ pub mod rt {
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} else { None };
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unsafe { pad(cv, s, head, PadFloat, buf) };
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}
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pub pure fn conv_poly<T>(cv: Conv, v: &T, buf: &mut ~str) {
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pub fn conv_poly<T>(cv: Conv, v: &T, buf: &mut ~str) {
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let s = sys::log_str(v);
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conv_str(cv, s, buf);
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}
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@ -576,8 +576,7 @@ pub mod rt {
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// Convert a uint to string with a minimum number of digits. If precision
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// is 0 and num is 0 then the result is the empty string. Could move this
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// to uint: but it doesn't seem all that useful.
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pub pure fn uint_to_str_prec(num: uint, radix: uint,
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prec: uint) -> ~str {
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pub fn uint_to_str_prec(num: uint, radix: uint, prec: uint) -> ~str {
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return if prec == 0u && num == 0u {
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~""
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} else {
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@ -590,7 +589,7 @@ pub mod rt {
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} else { s }
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};
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}
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pub pure fn get_int_precision(cv: Conv) -> uint {
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pub fn get_int_precision(cv: Conv) -> uint {
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return match cv.precision {
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CountIs(c) => c as uint,
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CountImplied => 1u
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@ -637,7 +636,7 @@ pub mod rt {
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PadFloat => (true, true),
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PadUnsigned => (true, false)
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};
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pure fn have_precision(cv: Conv) -> bool {
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fn have_precision(cv: Conv) -> bool {
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return match cv.precision { CountImplied => false, _ => true };
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}
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let zero_padding = {
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@ -672,7 +671,7 @@ pub mod rt {
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buf.push_str(s);
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}
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#[inline(always)]
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pub pure fn have_flag(flags: u32, f: u32) -> bool {
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pub fn have_flag(flags: u32, f: u32) -> bool {
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flags & f != 0
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}
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}
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