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Emit full paths for Option and Result
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This drops any assumption about having `Option` and `Result` through the
normal prelude. This also fixes #51 hygiene, as weird local types by the
same name won't affect the derived code.
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@cuviper
cuviper committed Jul 5, 2023
1 parent 58dad2c commit b0186e5
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Showing 2 changed files with 50 additions and 37 deletions.
74 changes: 37 additions & 37 deletions src/lib.rs
View file
Original file line number Diff line number Diff line change
Expand Up @@ -257,59 +257,59 @@ pub fn from_primitive(input: TokenStream) -> TokenStream {
quote! {
impl #import::FromPrimitive for #name {
#[inline]
fn from_i64(n: i64) -> Option<Self> {
fn from_i64(n: i64) -> ::core::option::Option<Self> {
<#inner_ty as #import::FromPrimitive>::from_i64(n).map(#name)
}
#[inline]
fn from_u64(n: u64) -> Option<Self> {
fn from_u64(n: u64) -> ::core::option::Option<Self> {
<#inner_ty as #import::FromPrimitive>::from_u64(n).map(#name)
}
#[inline]
fn from_isize(n: isize) -> Option<Self> {
fn from_isize(n: isize) -> ::core::option::Option<Self> {
<#inner_ty as #import::FromPrimitive>::from_isize(n).map(#name)
}
#[inline]
fn from_i8(n: i8) -> Option<Self> {
fn from_i8(n: i8) -> ::core::option::Option<Self> {
<#inner_ty as #import::FromPrimitive>::from_i8(n).map(#name)
}
#[inline]
fn from_i16(n: i16) -> Option<Self> {
fn from_i16(n: i16) -> ::core::option::Option<Self> {
<#inner_ty as #import::FromPrimitive>::from_i16(n).map(#name)
}
#[inline]
fn from_i32(n: i32) -> Option<Self> {
fn from_i32(n: i32) -> ::core::option::Option<Self> {
<#inner_ty as #import::FromPrimitive>::from_i32(n).map(#name)
}
#[inline]
fn from_i128(n: i128) -> Option<Self> {
fn from_i128(n: i128) -> ::core::option::Option<Self> {
<#inner_ty as #import::FromPrimitive>::from_i128(n).map(#name)
}
#[inline]
fn from_usize(n: usize) -> Option<Self> {
fn from_usize(n: usize) -> ::core::option::Option<Self> {
<#inner_ty as #import::FromPrimitive>::from_usize(n).map(#name)
}
#[inline]
fn from_u8(n: u8) -> Option<Self> {
fn from_u8(n: u8) -> ::core::option::Option<Self> {
<#inner_ty as #import::FromPrimitive>::from_u8(n).map(#name)
}
#[inline]
fn from_u16(n: u16) -> Option<Self> {
fn from_u16(n: u16) -> ::core::option::Option<Self> {
<#inner_ty as #import::FromPrimitive>::from_u16(n).map(#name)
}
#[inline]
fn from_u32(n: u32) -> Option<Self> {
fn from_u32(n: u32) -> ::core::option::Option<Self> {
<#inner_ty as #import::FromPrimitive>::from_u32(n).map(#name)
}
#[inline]
fn from_u128(n: u128) -> Option<Self> {
fn from_u128(n: u128) -> ::core::option::Option<Self> {
<#inner_ty as #import::FromPrimitive>::from_u128(n).map(#name)
}
#[inline]
fn from_f32(n: f32) -> Option<Self> {
fn from_f32(n: f32) -> ::core::option::Option<Self> {
<#inner_ty as #import::FromPrimitive>::from_f32(n).map(#name)
}
#[inline]
fn from_f64(n: f64) -> Option<Self> {
fn from_f64(n: f64) -> ::core::option::Option<Self> {
<#inner_ty as #import::FromPrimitive>::from_f64(n).map(#name)
}
}
Expand Down Expand Up @@ -339,7 +339,7 @@ pub fn from_primitive(input: TokenStream) -> TokenStream {

quote! {
if #from_i64_var == #name::#ident as i64 {
Some(#name::#ident)
::core::option::Option::Some(#name::#ident)
}
}
})
Expand All @@ -355,14 +355,14 @@ pub fn from_primitive(input: TokenStream) -> TokenStream {
impl #import::FromPrimitive for #name {
#[allow(trivial_numeric_casts)]
#[inline]
fn from_i64(#from_i64_var: i64) -> Option<Self> {
fn from_i64(#from_i64_var: i64) -> ::core::option::Option<Self> {
#(#clauses else)* {
None
::core::option::Option::None
}
}

#[inline]
fn from_u64(n: u64) -> Option<Self> {
fn from_u64(n: u64) -> ::core::option::Option<Self> {
Self::from_i64(n as i64)
}
}
Expand Down Expand Up @@ -431,59 +431,59 @@ pub fn to_primitive(input: TokenStream) -> TokenStream {
quote! {
impl #import::ToPrimitive for #name {
#[inline]
fn to_i64(&self) -> Option<i64> {
fn to_i64(&self) -> ::core::option::Option<i64> {
<#inner_ty as #import::ToPrimitive>::to_i64(&self.0)
}
#[inline]
fn to_u64(&self) -> Option<u64> {
fn to_u64(&self) -> ::core::option::Option<u64> {
<#inner_ty as #import::ToPrimitive>::to_u64(&self.0)
}
#[inline]
fn to_isize(&self) -> Option<isize> {
fn to_isize(&self) -> ::core::option::Option<isize> {
<#inner_ty as #import::ToPrimitive>::to_isize(&self.0)
}
#[inline]
fn to_i8(&self) -> Option<i8> {
fn to_i8(&self) -> ::core::option::Option<i8> {
<#inner_ty as #import::ToPrimitive>::to_i8(&self.0)
}
#[inline]
fn to_i16(&self) -> Option<i16> {
fn to_i16(&self) -> ::core::option::Option<i16> {
<#inner_ty as #import::ToPrimitive>::to_i16(&self.0)
}
#[inline]
fn to_i32(&self) -> Option<i32> {
fn to_i32(&self) -> ::core::option::Option<i32> {
<#inner_ty as #import::ToPrimitive>::to_i32(&self.0)
}
#[inline]
fn to_i128(&self) -> Option<i128> {
fn to_i128(&self) -> ::core::option::Option<i128> {
<#inner_ty as #import::ToPrimitive>::to_i128(&self.0)
}
#[inline]
fn to_usize(&self) -> Option<usize> {
fn to_usize(&self) -> ::core::option::Option<usize> {
<#inner_ty as #import::ToPrimitive>::to_usize(&self.0)
}
#[inline]
fn to_u8(&self) -> Option<u8> {
fn to_u8(&self) -> ::core::option::Option<u8> {
<#inner_ty as #import::ToPrimitive>::to_u8(&self.0)
}
#[inline]
fn to_u16(&self) -> Option<u16> {
fn to_u16(&self) -> ::core::option::Option<u16> {
<#inner_ty as #import::ToPrimitive>::to_u16(&self.0)
}
#[inline]
fn to_u32(&self) -> Option<u32> {
fn to_u32(&self) -> ::core::option::Option<u32> {
<#inner_ty as #import::ToPrimitive>::to_u32(&self.0)
}
#[inline]
fn to_u128(&self) -> Option<u128> {
fn to_u128(&self) -> ::core::option::Option<u128> {
<#inner_ty as #import::ToPrimitive>::to_u128(&self.0)
}
#[inline]
fn to_f32(&self) -> Option<f32> {
fn to_f32(&self) -> ::core::option::Option<f32> {
<#inner_ty as #import::ToPrimitive>::to_f32(&self.0)
}
#[inline]
fn to_f64(&self) -> Option<f64> {
fn to_f64(&self) -> ::core::option::Option<f64> {
<#inner_ty as #import::ToPrimitive>::to_f64(&self.0)
}
}
Expand Down Expand Up @@ -522,7 +522,7 @@ pub fn to_primitive(input: TokenStream) -> TokenStream {
}
} else {
quote! {
Some(match *self {
::core::option::Option::Some(match *self {
#(#variants,)*
})
}
Expand All @@ -532,12 +532,12 @@ pub fn to_primitive(input: TokenStream) -> TokenStream {
impl #import::ToPrimitive for #name {
#[inline]
#[allow(trivial_numeric_casts)]
fn to_i64(&self) -> Option<i64> {
fn to_i64(&self) -> ::core::option::Option<i64> {
#match_expr
}

#[inline]
fn to_u64(&self) -> Option<u64> {
fn to_u64(&self) -> ::core::option::Option<u64> {
self.to_i64().map(|x| x as u64)
}
}
Expand Down Expand Up @@ -617,7 +617,7 @@ pub fn num_cast(input: TokenStream) -> TokenStream {
let impl_ = quote! {
impl #import::NumCast for #name {
#[inline]
fn from<T: #import::ToPrimitive>(n: T) -> Option<Self> {
fn from<T: #import::ToPrimitive>(n: T) -> ::core::option::Option<Self> {
<#inner_ty as #import::NumCast>::from(n).map(#name)
}
}
Expand Down Expand Up @@ -695,7 +695,7 @@ pub fn num(input: TokenStream) -> TokenStream {
impl #import::Num for #name {
type FromStrRadixErr = <#inner_ty as #import::Num>::FromStrRadixErr;
#[inline]
fn from_str_radix(s: &str, radix: u32) -> Result<Self, Self::FromStrRadixErr> {
fn from_str_radix(s: &str, radix: u32) -> ::core::result::Result<Self, Self::FromStrRadixErr> {
<#inner_ty as #import::Num>::from_str_radix(s, radix).map(#name)
}
}
Expand Down
13 changes: 13 additions & 0 deletions tests/no_implicit_prelude.rs
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Original file line number Diff line number Diff line change
@@ -0,0 +1,13 @@
#![no_implicit_prelude]

use ::num_derive::*;

#[derive(FromPrimitive, ToPrimitive)]
enum Color {
Red,
Blue,
Green,
}

#[derive(FromPrimitive, ToPrimitive, NumCast, PartialEq, Zero, One, NumOps, Num)]
struct NewI32(i32);

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