src/librustc_allocator/lib.rs

   1 // Copyright 2016 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 #![feature(rustc_private)]
  12
  13 extern crate rustc;
  14 extern crate rustc_errors;
  15 extern crate syntax;
  16 extern crate syntax_pos;
  17
  18 pub mod expand;
  19
  20 pub static ALLOCATOR_METHODS: &[AllocatorMethod] = &[
  21     AllocatorMethod {
  22         name: "alloc",
  23         inputs: &[AllocatorTy::Layout],
  24         output: AllocatorTy::ResultPtr,
  25         is_unsafe: true,
  26     },
  27     AllocatorMethod {
  28         name: "oom",
  29         inputs: &[AllocatorTy::AllocErr],
  30         output: AllocatorTy::Bang,
  31         is_unsafe: false,
  32     },
  33     AllocatorMethod {
  34         name: "dealloc",
  35         inputs: &[AllocatorTy::Ptr, AllocatorTy::Layout],
  36         output: AllocatorTy::Unit,
  37         is_unsafe: true,
  38     },
  39     AllocatorMethod {
  40         name: "usable_size",
  41         inputs: &[AllocatorTy::LayoutRef],
  42         output: AllocatorTy::UsizePair,
  43         is_unsafe: false,
  44     },
  45     AllocatorMethod {
  46         name: "realloc",
  47         inputs: &[AllocatorTy::Ptr, AllocatorTy::Layout, AllocatorTy::Layout],
  48         output: AllocatorTy::ResultPtr,
  49         is_unsafe: true,
  50     },
  51     AllocatorMethod {
  52         name: "alloc_zeroed",
  53         inputs: &[AllocatorTy::Layout],
  54         output: AllocatorTy::ResultPtr,
  55         is_unsafe: true,
  56     },
  57     AllocatorMethod {
  58         name: "alloc_excess",
  59         inputs: &[AllocatorTy::Layout],
  60         output: AllocatorTy::ResultExcess,
  61         is_unsafe: true,
  62     },
  63     AllocatorMethod {
  64         name: "realloc_excess",
  65         inputs: &[AllocatorTy::Ptr, AllocatorTy::Layout, AllocatorTy::Layout],
  66         output: AllocatorTy::ResultExcess,
  67         is_unsafe: true,
  68     },
  69     AllocatorMethod {
  70         name: "grow_in_place",
  71         inputs: &[AllocatorTy::Ptr, AllocatorTy::Layout, AllocatorTy::Layout],
  72         output: AllocatorTy::ResultUnit,
  73         is_unsafe: true,
  74     },
  75     AllocatorMethod {
  76         name: "shrink_in_place",
  77         inputs: &[AllocatorTy::Ptr, AllocatorTy::Layout, AllocatorTy::Layout],
  78         output: AllocatorTy::ResultUnit,
  79         is_unsafe: true,
  80     },
  81 ];
  82
  83 pub struct AllocatorMethod {
  84     pub name: &'static str,
  85     pub inputs: &'static [AllocatorTy],
  86     pub output: AllocatorTy,
  87     pub is_unsafe: bool,
  88 }
  89
  90 pub enum AllocatorTy {
  91     AllocErr,
  92     Bang,
  93     Layout,
  94     LayoutRef,
  95     Ptr,
  96     ResultExcess,
  97     ResultPtr,
  98     ResultUnit,
  99     Unit,
 100     UsizePair,
 101 }