1 use super::BackendTypes;
2 use crate::mir::place::PlaceRef;
3 use rustc::mir::interpret::Allocation;
4 use rustc::mir::interpret::Scalar;
6 use syntax::symbol::LocalInternedString;
8 pub trait ConstMethods<'tcx>: BackendTypes {
9 // Constant constructors
10 fn const_null(&self, t: Self::Type) -> Self::Value;
11 fn const_undef(&self, t: Self::Type) -> Self::Value;
12 fn const_int(&self, t: Self::Type, i: i64) -> Self::Value;
13 fn const_uint(&self, t: Self::Type, i: u64) -> Self::Value;
14 fn const_uint_big(&self, t: Self::Type, u: u128) -> Self::Value;
15 fn const_bool(&self, val: bool) -> Self::Value;
16 fn const_i32(&self, i: i32) -> Self::Value;
17 fn const_u32(&self, i: u32) -> Self::Value;
18 fn const_u64(&self, i: u64) -> Self::Value;
19 fn const_usize(&self, i: u64) -> Self::Value;
20 fn const_u8(&self, i: u8) -> Self::Value;
22 // This is a 'c-like' raw string, which differs from
23 // our boxed-and-length-annotated strings.
24 fn const_cstr(&self, s: LocalInternedString, null_terminated: bool) -> Self::Value;
26 fn const_str_slice(&self, s: LocalInternedString) -> Self::Value;
27 fn const_fat_ptr(&self, ptr: Self::Value, meta: Self::Value) -> Self::Value;
28 fn const_struct(&self, elts: &[Self::Value], packed: bool) -> Self::Value;
29 fn const_array(&self, ty: Self::Type, elts: &[Self::Value]) -> Self::Value;
30 fn const_vector(&self, elts: &[Self::Value]) -> Self::Value;
31 fn const_bytes(&self, bytes: &[u8]) -> Self::Value;
33 fn const_get_elt(&self, v: Self::Value, idx: u64) -> Self::Value;
34 fn const_get_real(&self, v: Self::Value) -> Option<(f64, bool)>;
35 fn const_to_uint(&self, v: Self::Value) -> u64;
36 fn const_to_opt_u128(&self, v: Self::Value, sign_ext: bool) -> Option<u128>;
38 fn is_const_integral(&self, v: Self::Value) -> bool;
39 fn is_const_real(&self, v: Self::Value) -> bool;
44 layout: &layout::Scalar,
49 layout: layout::TyLayout<'tcx>,
52 ) -> PlaceRef<'tcx, Self::Value>;
54 fn const_ptrcast(&self, val: Self::Value, ty: Self::Type) -> Self::Value;