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rewrite

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This commit is contained in:
nora 2022-09-14 22:24:10 +02:00
parent 2f7a13cb2f
commit 594047c0a1
8 changed files with 444 additions and 620 deletions
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68
src/args.rs
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@ -1,11 +1,9 @@
use std::marker::PhantomData;
use crate::{Debug, Display, FmtOpts, Formatter, Result, Write};
use crate::{FmtOpts, Formatter, Result, Write};
pub trait Arguments {
fn fmt<W: Write, O: FmtOpts>(&self, f: &mut Formatter<W, O>) -> Result;
}
macro_rules! impl_arguments {
macro_rules! tuple_args {
() => {};
($first:ident $($rest:ident)*) => {
impl<$first, $($rest),*> Arguments for ($first, $($rest),*)
@ -24,12 +22,12 @@ macro_rules! impl_arguments {
}
}
impl_arguments!($($rest)*);
tuple_args!($($rest)*);
};
}
#[rustfmt::skip]
impl_arguments!(
tuple_args!(
A1 A2 A3 A4 A5 A6 A7 A8 A9 A10
// A11 A12 A13 A14 A15 A16 A17 A18 A19 A20
// A21 A22 A23 A24 A25 A26 A27 A28 A29 A30
@ -50,37 +48,33 @@ impl Arguments for Str {
}
}
pub struct DebugArg<T, O>(pub T, pub PhantomData<O>);
macro_rules! traits {
($(struct $name:ident: trait $trait:ident);* $(;)?) => {
$(
pub struct $name<T, O>(pub T, pub O);
impl<T: Debug, OutOpt> Arguments for DebugArg<T, OutOpt> {
fn fmt<W: Write, O: FmtOpts>(&self, f: &mut Formatter<W, O>) -> Result {
Debug::fmt(&self.0, f)
}
pub trait $trait {
fn fmt<W: Write, O: FmtOpts>(&self, f: &mut Formatter<W, O>) -> Result;
}
impl<T: $trait, O: FmtOpts> Arguments for $name<T, O> {
fn fmt<W: Write, OldOpts: FmtOpts>(&self, f: &mut Formatter<W, OldOpts>) -> Result {
let mut f = f.with_opts(&self.1);
<T as $trait>::fmt(&self.0, &mut f)
}
}
)*
};
}
pub struct DisplayArg<T, O>(pub T, pub PhantomData<O>);
impl<T: Display, OutOpt> Arguments for DisplayArg<T, OutOpt> {
fn fmt<W: Write, O: FmtOpts>(&self, f: &mut Formatter<W, O>) -> Result {
Display::fmt(&self.0, f)
}
}
pub struct ConstWidthArg<T, const WIDTH: usize> {
value: T,
_boo: PhantomData<[(); WIDTH]>,
}
#[allow(non_snake_case)]
pub fn ConstWidthArg<T, const WIDTH: usize>(value: T) -> ConstWidthArg<T, WIDTH> {
ConstWidthArg {
value,
_boo: PhantomData,
}
}
impl<T: Display, const WIDTH: usize> Arguments for ConstWidthArg<T, WIDTH> {
fn fmt<W: Write, O: FmtOpts>(&self, _: &mut Formatter<W, O>) -> Result {
todo!()
}
}
traits!(
struct DebugArg: trait Debug;
struct DisplayArg: trait Display;
struct BinaryArg: trait Binary;
struct OctalArg: trait Octal;
struct LowerHexArg: trait LowerHex;
struct UpperHexArg: trait UpperHex;
struct UpperExpArg: trait UpperExp;
struct LowerExpArg: trait LowerExp;
);