Merge #28

28: Update syn related dependencies to 1.0 and bump version r=cuviper a=Eijebong



Co-authored-by: Bastien Orivel <eijebong@bananium.fr>
Co-authored-by: Josh Stone <cuviper@gmail.com>

Author: 3 people

.travis.yml

@@ -1,9 +1,6 @@
 language: rust
 sudo: false
 rust:
-  - 1.15.0
-  - 1.20.0
-  - 1.26.0 # has_i128
   - 1.31.0 # 2018!
   - stable
   - beta

Cargo.toml

@@ -8,15 +8,14 @@ categories = [ "science" ]
 license = "MIT/Apache-2.0"
 name = "num-derive"
 repository = "https://github.com/rust-num/num-derive"
-version = "0.2.5"
+version = "0.3.0"
 readme = "README.md"
-build = "build.rs"
 exclude = ["/ci/*", "/.travis.yml", "/bors.toml"]
 
 [dependencies]
-proc-macro2 = "0.4.2"
-quote = "0.6"
-syn = "0.15"
+proc-macro2 = "1"
+quote = "1"
+syn = "1"
 
 [dev-dependencies]
 num = "0.2"
@@ -29,6 +28,3 @@ full-syntax = ["syn/full"]
 name = "num_derive"
 proc-macro = true
 test = false
-
-[build-dependencies]
-autocfg = "0.1.2"

README.md

@@ -2,6 +2,7 @@
 
 [![crate](https://img.shields.io/crates/v/num-derive.svg)](https://crates.io/crates/num-derive)
 [![documentation](https://docs.rs/num-derive/badge.svg)](https://docs.rs/num-derive)
+![minimum rustc 1.31](https://img.shields.io/badge/rustc-1.31+-red.svg)
 [![Travis status](https://travis-ci.org/rust-num/num-derive.svg?branch=master)](https://travis-ci.org/rust-num/num-derive)
 
 Procedural macros to derive numeric traits in Rust.
@@ -13,7 +14,7 @@ Add this to your `Cargo.toml`:
 ```toml
 [dependencies]
 num-traits = "0.2"
-num-derive = "0.2"
+num-derive = "0.3"
 ```
 
 and this to your crate root:
@@ -50,4 +51,4 @@ Release notes are available in [RELEASES.md](RELEASES.md).
 
 ## Compatibility
 
-The `num-derive` crate is tested for rustc 1.15 and greater.
+The `num-derive` crate is tested for rustc 1.31 and greater.

build.rs

@@ -5,7 +5,7 @@
 set -ex
 
 export TRAVIS_RUST_VERSION
-for TRAVIS_RUST_VERSION in 1.15.0 1.20.0 1.26.0 1.31.0 stable beta nightly; do
+for TRAVIS_RUST_VERSION in 1.31.0 stable beta nightly; do
     run="rustup run $TRAVIS_RUST_VERSION"
     $run $PWD/ci/test_full.sh
     env FEATURES="full-syntax" $run $PWD/ci/test_full.sh

ci/rustup.sh

@@ -6,15 +6,4 @@ echo Testing num-derive on rustc ${TRAVIS_RUST_VERSION}
 
 # num-derive should build and test everywhere.
 cargo build --verbose --features="$FEATURES"
-
-# Some cargo versions were buggy about passing dev-deps to rustdoc,
-# but worked when docs were tested separately.
-case "$TRAVIS_RUST_VERSION" in
-    1.20.0 | 1.26.0 )
-        cargo test --verbose --features="$FEATURES" --tests
-        cargo test --verbose --features="$FEATURES" --doc
-        ;;
-    *)
-        cargo test --verbose --features="$FEATURES"
-        ;;
-esac
+cargo test --verbose --features="$FEATURES"

ci/test_full.sh

@@ -78,23 +78,18 @@ fn dummy_const_trick<T: quote::ToTokens>(
         Span::call_site(),
     );
     quote! {
-        #[allow(non_upper_case_globals, unused_attributes, unused_qualifications)]
+        #[allow(non_upper_case_globals, unused_qualifications)]
         const #dummy_const: () = {
-            #[allow(unknown_lints)]
-            #[cfg_attr(feature = "cargo-clippy", allow(useless_attribute))]
+            #[allow(clippy::useless_attribute)]
             #[allow(rust_2018_idioms)]
             extern crate num_traits as _num_traits;
             #exp
         };
     }
 }
 
-#[allow(deprecated)]
 fn unraw(ident: &proc_macro2::Ident) -> String {
-    // str::trim_start_matches was added in 1.30, trim_left_matches deprecated
-    // in 1.33. We currently support rustc back to 1.15 so we need to continue
-    // to use the deprecated one.
-    ident.to_string().trim_left_matches("r#").to_owned()
+    ident.to_string().trim_start_matches("r#").to_owned()
 }
 
 // If `data` is a newtype, return the type it's wrapping.
@@ -177,19 +172,6 @@ pub fn from_primitive(input: TokenStream) -> TokenStream {
     let name = &ast.ident;
 
     let impl_ = if let Some(inner_ty) = newtype_inner(&ast.data) {
-        let i128_fns = if cfg!(has_i128) {
-            quote! {
-                fn from_i128(n: i128) -> Option<Self> {
-                    <#inner_ty as _num_traits::FromPrimitive>::from_i128(n).map(#name)
-                }
-                fn from_u128(n: u128) -> Option<Self> {
-                    <#inner_ty as _num_traits::FromPrimitive>::from_u128(n).map(#name)
-                }
-            }
-        } else {
-            quote! {}
-        };
-
         quote! {
             impl _num_traits::FromPrimitive for #name {
                 fn from_i64(n: i64) -> Option<Self> {
@@ -210,6 +192,9 @@ pub fn from_primitive(input: TokenStream) -> TokenStream {
                 fn from_i32(n: i32) -> Option<Self> {
                     <#inner_ty as _num_traits::FromPrimitive>::from_i32(n).map(#name)
                 }
+                fn from_i128(n: i128) -> Option<Self> {
+                    <#inner_ty as _num_traits::FromPrimitive>::from_i128(n).map(#name)
+                }
                 fn from_usize(n: usize) -> Option<Self> {
                     <#inner_ty as _num_traits::FromPrimitive>::from_usize(n).map(#name)
                 }
@@ -222,13 +207,15 @@ pub fn from_primitive(input: TokenStream) -> TokenStream {
                 fn from_u32(n: u32) -> Option<Self> {
                     <#inner_ty as _num_traits::FromPrimitive>::from_u32(n).map(#name)
                 }
+                fn from_u128(n: u128) -> Option<Self> {
+                    <#inner_ty as _num_traits::FromPrimitive>::from_u128(n).map(#name)
+                }
                 fn from_f32(n: f32) -> Option<Self> {
                     <#inner_ty as _num_traits::FromPrimitive>::from_f32(n).map(#name)
                 }
                 fn from_f64(n: f64) -> Option<Self> {
                     <#inner_ty as _num_traits::FromPrimitive>::from_f64(n).map(#name)
                 }
-                #i128_fns
             }
         }
     } else {
@@ -341,19 +328,6 @@ pub fn to_primitive(input: TokenStream) -> TokenStream {
     let name = &ast.ident;
 
     let impl_ = if let Some(inner_ty) = newtype_inner(&ast.data) {
-        let i128_fns = if cfg!(has_i128) {
-            quote! {
-                fn to_i128(&self) -> Option<i128> {
-                    <#inner_ty as _num_traits::ToPrimitive>::to_i128(&self.0)
-                }
-                fn to_u128(&self) -> Option<u128> {
-                    <#inner_ty as _num_traits::ToPrimitive>::to_u128(&self.0)
-                }
-            }
-        } else {
-            quote! {}
-        };
-
         quote! {
             impl _num_traits::ToPrimitive for #name {
                 fn to_i64(&self) -> Option<i64> {
@@ -374,6 +348,9 @@ pub fn to_primitive(input: TokenStream) -> TokenStream {
                 fn to_i32(&self) -> Option<i32> {
                     <#inner_ty as _num_traits::ToPrimitive>::to_i32(&self.0)
                 }
+                fn to_i128(&self) -> Option<i128> {
+                    <#inner_ty as _num_traits::ToPrimitive>::to_i128(&self.0)
+                }
                 fn to_usize(&self) -> Option<usize> {
                     <#inner_ty as _num_traits::ToPrimitive>::to_usize(&self.0)
                 }
@@ -386,13 +363,15 @@ pub fn to_primitive(input: TokenStream) -> TokenStream {
                 fn to_u32(&self) -> Option<u32> {
                     <#inner_ty as _num_traits::ToPrimitive>::to_u32(&self.0)
                 }
+                fn to_u128(&self) -> Option<u128> {
+                    <#inner_ty as _num_traits::ToPrimitive>::to_u128(&self.0)
+                }
                 fn to_f32(&self) -> Option<f32> {
                     <#inner_ty as _num_traits::ToPrimitive>::to_f32(&self.0)
                 }
                 fn to_f64(&self) -> Option<f64> {
                     <#inner_ty as _num_traits::ToPrimitive>::to_f64(&self.0)
                 }
-                #i128_fns
             }
         }
     } else {
@@ -452,9 +431,7 @@ pub fn to_primitive(input: TokenStream) -> TokenStream {
     dummy_const_trick("ToPrimitive", &name, impl_).into()
 }
 
-#[allow(renamed_and_removed_lints)]
-#[cfg_attr(feature = "cargo-clippy", allow(const_static_lifetime))]
-const NEWTYPE_ONLY: &'static str = "This trait can only be derived for newtypes";
+const NEWTYPE_ONLY: &str = "This trait can only be derived for newtypes";
 
 /// Derives [`num_traits::NumOps`][num_ops] for newtypes.  The inner type must already implement
 /// `NumOps`.

src/lib.rs

@@ -35,7 +35,6 @@ fn test_from_primitive() {
 }
 
 #[test]
-#[cfg(has_i128)]
 fn test_from_primitive_128() {
     assert_eq!(
         MyFloat::from_i128(std::i128::MIN),
@@ -49,7 +48,6 @@ fn test_to_primitive() {
 }
 
 #[test]
-#[cfg(has_i128)]
 fn test_to_primitive_128() {
     let f = MyFloat::from_f32(std::f32::MAX).unwrap();
     assert_eq!(f.to_i128(), None);