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use rustc_span::symbol::{sym, Symbol};
#[derive(Clone, Debug, Copy, Eq, PartialEq, HashStable_Generic)]
pub enum AllocatorKind {
Global,
Default,
}
pub fn global_fn_name(base: Symbol) -> String {
format!("__rust_{base}")
}
pub fn default_fn_name(base: Symbol) -> String {
format!("__rdl_{base}")
}
pub fn alloc_error_handler_name(alloc_error_handler_kind: AllocatorKind) -> &'static str {
match alloc_error_handler_kind {
AllocatorKind::Global => "__rg_oom",
AllocatorKind::Default => "__rdl_oom",
}
}
pub const NO_ALLOC_SHIM_IS_UNSTABLE: &str = "__rust_no_alloc_shim_is_unstable";
pub enum AllocatorTy {
Layout,
Ptr,
ResultPtr,
Unit,
Usize,
}
pub struct AllocatorMethod {
pub name: Symbol,
pub inputs: &'static [AllocatorTy],
pub output: AllocatorTy,
}
pub static ALLOCATOR_METHODS: &[AllocatorMethod] = &[
AllocatorMethod {
name: sym::alloc,
inputs: &[AllocatorTy::Layout],
output: AllocatorTy::ResultPtr,
},
AllocatorMethod {
name: sym::dealloc,
inputs: &[AllocatorTy::Ptr, AllocatorTy::Layout],
output: AllocatorTy::Unit,
},
AllocatorMethod {
name: sym::realloc,
inputs: &[AllocatorTy::Ptr, AllocatorTy::Layout, AllocatorTy::Usize],
output: AllocatorTy::ResultPtr,
},
AllocatorMethod {
name: sym::alloc_zeroed,
inputs: &[AllocatorTy::Layout],
output: AllocatorTy::ResultPtr,
},
];
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