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//! FIXME: write short doc here
use std::fmt;
pub use hir_def::builtin_type::{FloatBitness, IntBitness, Signedness};
#[derive(Clone, Copy, Eq, PartialEq, Hash, Debug)]
pub enum Uncertain<T> {
Unknown,
Known(T),
}
impl From<IntTy> for Uncertain<IntTy> {
fn from(ty: IntTy) -> Self {
Uncertain::Known(ty)
}
}
impl fmt::Display for Uncertain<IntTy> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
Uncertain::Unknown => write!(f, "{{integer}}"),
Uncertain::Known(ty) => write!(f, "{}", ty),
}
}
}
impl From<FloatTy> for Uncertain<FloatTy> {
fn from(ty: FloatTy) -> Self {
Uncertain::Known(ty)
}
}
impl fmt::Display for Uncertain<FloatTy> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
Uncertain::Unknown => write!(f, "{{float}}"),
Uncertain::Known(ty) => write!(f, "{}", ty),
}
}
}
#[derive(Copy, Clone, Eq, PartialEq, Hash)]
pub struct IntTy {
pub signedness: Signedness,
pub bitness: IntBitness,
}
impl fmt::Debug for IntTy {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
fmt::Display::fmt(self, f)
}
}
impl fmt::Display for IntTy {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{}", self.ty_to_string())
}
}
impl IntTy {
pub fn isize() -> IntTy {
IntTy { signedness: Signedness::Signed, bitness: IntBitness::Xsize }
}
pub fn i8() -> IntTy {
IntTy { signedness: Signedness::Signed, bitness: IntBitness::X8 }
}
pub fn i16() -> IntTy {
IntTy { signedness: Signedness::Signed, bitness: IntBitness::X16 }
}
pub fn i32() -> IntTy {
IntTy { signedness: Signedness::Signed, bitness: IntBitness::X32 }
}
pub fn i64() -> IntTy {
IntTy { signedness: Signedness::Signed, bitness: IntBitness::X64 }
}
pub fn i128() -> IntTy {
IntTy { signedness: Signedness::Signed, bitness: IntBitness::X128 }
}
pub fn usize() -> IntTy {
IntTy { signedness: Signedness::Unsigned, bitness: IntBitness::Xsize }
}
pub fn u8() -> IntTy {
IntTy { signedness: Signedness::Unsigned, bitness: IntBitness::X8 }
}
pub fn u16() -> IntTy {
IntTy { signedness: Signedness::Unsigned, bitness: IntBitness::X16 }
}
pub fn u32() -> IntTy {
IntTy { signedness: Signedness::Unsigned, bitness: IntBitness::X32 }
}
pub fn u64() -> IntTy {
IntTy { signedness: Signedness::Unsigned, bitness: IntBitness::X64 }
}
pub fn u128() -> IntTy {
IntTy { signedness: Signedness::Unsigned, bitness: IntBitness::X128 }
}
pub(crate) fn ty_to_string(self) -> &'static str {
match (self.signedness, self.bitness) {
(Signedness::Signed, IntBitness::Xsize) => "isize",
(Signedness::Signed, IntBitness::X8) => "i8",
(Signedness::Signed, IntBitness::X16) => "i16",
(Signedness::Signed, IntBitness::X32) => "i32",
(Signedness::Signed, IntBitness::X64) => "i64",
(Signedness::Signed, IntBitness::X128) => "i128",
(Signedness::Unsigned, IntBitness::Xsize) => "usize",
(Signedness::Unsigned, IntBitness::X8) => "u8",
(Signedness::Unsigned, IntBitness::X16) => "u16",
(Signedness::Unsigned, IntBitness::X32) => "u32",
(Signedness::Unsigned, IntBitness::X64) => "u64",
(Signedness::Unsigned, IntBitness::X128) => "u128",
}
}
}
#[derive(Copy, Clone, PartialEq, Eq, Hash)]
pub struct FloatTy {
pub bitness: FloatBitness,
}
impl fmt::Debug for FloatTy {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
fmt::Display::fmt(self, f)
}
}
impl fmt::Display for FloatTy {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{}", self.ty_to_string())
}
}
impl FloatTy {
pub fn f32() -> FloatTy {
FloatTy { bitness: FloatBitness::X32 }
}
pub fn f64() -> FloatTy {
FloatTy { bitness: FloatBitness::X64 }
}
pub(crate) fn ty_to_string(self) -> &'static str {
match self.bitness {
FloatBitness::X32 => "f32",
FloatBitness::X64 => "f64",
}
}
}
|
