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use proc_macro2::TokenStream;
use quote::quote;
#[allow(clippy::upper_case_acronyms)]
#[derive(Debug, PartialEq)]
pub enum Switch {
A {
a: i8,
},
Ar {
la: i8,
ra: i8,
},
AB {
a: i8,
b: i8,
},
ArB {
la: i8,
ra: i8,
b: i8,
},
ArBr {
la: i8,
ra: i8,
lb: i8,
rb: i8,
},
ABC {
a: i8,
b: i8,
c: i8,
},
ArBC {
la: i8,
ra: i8,
b: i8,
c: i8,
},
ArBrC {
la: i8,
ra: i8,
lb: i8,
rb: i8,
c: i8,
},
ArBrCr {
la: i8,
ra: i8,
lb: i8,
rb: i8,
lc: i8,
rc: i8,
},
}
enum Bodies {
Reg,
Exact,
}
#[allow(clippy::from_over_into)]
impl Into<Bodies> for Switch {
fn into(self) -> Bodies {
use Switch::*;
match self {
ArBC { .. } | ArBrCr { .. } | ArBrC { .. } => Bodies::Reg,
_ => Bodies::Exact,
}
}
}
pub(crate) struct Masking {
pub struct_body: TokenStream,
pub build: TokenStream,
pub mask_body: TokenStream,
pub false_positive: bool,
}
impl Masking {
fn new(
struct_body: TokenStream,
build: TokenStream,
mask_body: TokenStream,
false_positive: bool,
) -> Self {
Self {
struct_body,
build,
mask_body,
false_positive,
}
}
}
impl From<Switch> for Masking {
fn from(switch: Switch) -> Self {
use Switch::*;
match switch {
ArBC { la, ra, b, c } => {
let translation_a: i8 = i8::MAX - ra;
let below_a: i8 = i8::MAX - (ra - la) - 1;
Masking::new(
quote! {{
translation_a: V,
below_a: V,
b: V,
c: V
}},
quote! {
Self::Escapes {
translation_a: V::splat(#translation_a as u8),
below_a: V::splat(#below_a as u8),
b: V::splat(#b as u8),
c: V::splat(#c as u8),
}
},
quote! {
vector2.add(self.translation_a).gt(self.below_a)
.or(vector2.cmpeq(self.b))
.or(vector2.cmpeq(self.c))
},
false,
)
}
ABC { a, b, c } => Masking::new(
quote! {{
a: V,
b: V,
c: V
}},
quote! {
Self::Escapes {
a: V::splat(#a as u8),
b: V::splat(#b as u8),
c: V::splat(#c as u8),
}
},
quote! {
vector2.cmpeq(self.a)
.or(vector2.cmpeq(self.b))
.or(vector2.cmpeq(self.c))
},
false,
),
AB { a, b } => Masking::new(
quote! {{
a: V,
b: V
}},
quote! {
Self::Escapes {
a: V::splat(#a as u8),
b: V::splat(#b as u8),
}
},
quote! {
vector2.cmpeq(self.a)
.or(vector2.cmpeq(self.b))
},
false,
),
A { a } => Masking::new(
quote! {{
a: V
}},
quote! {
Self::Escapes {
a: V::splat(#a as u8),
}
},
quote! {
vector2.cmpeq(self.a)
},
false,
),
ArBrCr {
la,
ra,
lb,
rb,
lc,
rc,
} => {
let translation_a: i8 = i8::MAX - ra;
let below_a: i8 = i8::MAX - (ra - la) - 1;
let translation_b: i8 = i8::MAX - rb;
let below_b: i8 = i8::MAX - (rb - lb) - 1;
let translation_c: i8 = i8::MAX - rc;
let below_c: i8 = i8::MAX - (rc - lc) - 1;
Masking::new(
quote! {{
translation_a: V,
below_a: V,
translation_b: V,
below_b: V,
translation_c: V,
below_c: V
}},
quote! {
Self::Escapes {
translation_a: V::splat(#translation_a as u8),
below_a: V::splat(#below_a as u8),
translation_b: V::splat(#translation_b as u8),
below_b: V::splat(#below_b as u8),
translation_c: V::splat(#translation_c as u8),
below_c: V::splat(#below_c as u8),
}
},
quote! {
vector2.add(self.translation_a).gt(self.below_a)
.or(vector2.add(self.translation_b).gt(self.below_b))
.or(vector2.add(self.translation_c).gt(self.below_c))
},
true,
)
}
ArBrC { la, ra, lb, rb, c } => {
let translation_a: i8 = i8::MAX - ra;
let below_a: i8 = i8::MAX - (ra - la) - 1;
let translation_b: i8 = i8::MAX - rb;
let below_b: i8 = i8::MAX - (rb - lb) - 1;
Masking::new(
quote! {{
translation_a: V,
below_a: V,
translation_b: V,
below_b: V,
c: V
}},
quote! {
Self::Escapes {
translation_a: V::splat(#translation_a as u8),
below_a: V::splat(#below_a as u8),
translation_b: V::splat(#translation_b as u8),
below_b: V::splat(#below_b as u8),
c: V::splat(#c as u8),
}
},
quote! {
vector2.add(self.translation_a).gt(self.below_a)
.or(vector2.add(self.translation_b).gt(self.below_b))
.or(vector2.cmpeq(self.c))
},
true,
)
}
ArBr { la, ra, lb, rb } => {
let translation_a: i8 = i8::MAX - ra;
let below_a: i8 = i8::MAX - (ra - la) - 1;
let translation_b: i8 = i8::MAX - rb;
let below_b: i8 = i8::MAX - (rb - lb) - 1;
Masking::new(
quote! {{
translation_a: V,
below_a: V,
translation_b: V,
below_b: V
}},
quote! {
Self::Escapes {
translation_a: V::splat(#translation_a as u8),
below_a: V::splat(#below_a as u8),
translation_b: V::splat(#translation_b as u8),
below_b: V::splat(#below_b as u8),
}
},
quote! {
vector2.add(self.translation_a).gt(self.below_a)
.or(vector2.add(self.translation_b).gt(self.below_b))
},
false,
)
}
ArB { la, ra, b } => {
let translation_a: i8 = i8::MAX - ra;
let below_a: i8 = i8::MAX - (ra - la) - 1;
Masking::new(
quote! {{
translation_a: V,
below_a: V,
b: V
}},
quote! {
Self::Escapes {
translation_a: V::splat(#translation_a as u8),
below_a: V::splat(#below_a as u8),
b: V::splat(#b as u8),
}
},
quote! {
vector2.add(self.translation_a).gt(self.below_a)
.or(vector2.cmpeq(self.b))
},
false,
)
}
Ar { la, ra } => {
let translation_a: i8 = i8::MAX - ra;
let below_a: i8 = i8::MAX - (ra - la) - 1;
Masking::new(
quote! {{
translation_a: V,
below_a: V
}},
quote! {
Self::Escapes {
translation_a: V::splat(#translation_a as u8),
below_a: V::splat(#below_a as u8),
}
},
quote! {
vector2.add(self.translation_a).gt(self.below_a)
},
false,
)
}
}
}
}