internal_macros.rs.html -- source
Description: Source to the Rust file `src/libcore/internal_macros.rs`.
Keywords: rust, rustlang, rust-lang

     1
     2
     3
     4
     5
     6
     7
     8
     9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    48
    49
    50
    51
    52
    53
    54
    55
    56
    57
    58
    59
    60
    61
    62

    // Copyright 2016 The Rust Project Developers. See the COPYRIGHT
    // file at the top-level directory of this distribution and at
    // http://rust-lang.org/COPYRIGHT.
    //
    // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
    // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
    // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
    // option. This file may not be copied, modified, or distributed
    // except according to those terms.

    // implements the unary operator "op &T"
    // based on "op T" where T is expected to be `Copy`able
    macro_rules! forward_ref_unop {
        (impl $imp:ident, $method:ident for $t:ty) => {
            #[stable(feature = "rust1", since = "1.0.0")]
            impl<'a> $imp for &'a $t {
                type Output = <$t as $imp>::Output;

                #[inline]
                fn $method(self) -> <$t as $imp>::Output {
                    $imp::$method(*self)
                }
            }
        }
    }

    // implements binary operators "&T op U", "T op &U", "&T op &U"
    // based on "T op U" where T and U are expected to be `Copy`able
    macro_rules! forward_ref_binop {
        (impl $imp:ident, $method:ident for $t:ty, $u:ty) => {
            #[stable(feature = "rust1", since = "1.0.0")]
            impl<'a> $imp<$u> for &'a $t {
                type Output = <$t as $imp<$u>>::Output;

                #[inline]
                fn $method(self, other: $u) -> <$t as $imp<$u>>::Output {
                    $imp::$method(*self, other)
                }
            }

            #[stable(feature = "rust1", since = "1.0.0")]
            impl<'a> $imp<&'a $u> for $t {
                type Output = <$t as $imp<$u>>::Output;

                #[inline]
                fn $method(self, other: &'a $u) -> <$t as $imp<$u>>::Output {
                    $imp::$method(self, *other)
                }
            }

            #[stable(feature = "rust1", since = "1.0.0")]
            impl<'a, 'b> $imp<&'a $u> for &'b $t {
                type Output = <$t as $imp<$u>>::Output;

                #[inline]
                fn $method(self, other: &'a $u) -> <$t as $imp<$u>>::Output {
                    $imp::$method(*self, *other)
                }
            }
        }
    }

# Help

## Keyboard Shortcuts

?
  Show this help dialog
S
  Focus the search field
⇤
  Move up in search results
⇥
  Move down in search results
⏎
  Go to active search result
+
  Collapse/expand all sections

## Search Tricks

Prefix searches with a type followed by a colon (e.g. `fn:`) to restrict the search to a given type.

Accepted types are: `fn`, `mod`, `struct`, `enum`, `trait`, `type`, `macro`, and `const`.

Search functions by type signature (e.g. `vec -> usize` or `* -> vec`)