aboutsummaryrefslogtreecommitdiff
path: root/rand/rand-derive
diff options
context:
space:
mode:
Diffstat (limited to 'rand/rand-derive')
-rw-r--r--rand/rand-derive/Cargo.toml23
-rw-r--r--rand/rand-derive/README.md51
-rw-r--r--rand/rand-derive/src/lib.rs116
-rw-r--r--rand/rand-derive/tests/rand_macros.rs58
4 files changed, 0 insertions, 248 deletions
diff --git a/rand/rand-derive/Cargo.toml b/rand/rand-derive/Cargo.toml
deleted file mode 100644
index 1a2dbe1..0000000
--- a/rand/rand-derive/Cargo.toml
+++ /dev/null
@@ -1,23 +0,0 @@
-[package]
-
-name = "rand_derive"
-version = "0.3.1"
-authors = ["The Rust Project Developers"]
-license = "MIT/Apache-2.0"
-readme = "README.md"
-repository = "https://github.com/rust-lang-nursery/rand"
-documentation = "https://docs.rs/rand_derive"
-homepage = "https://github.com/rust-lang-nursery/rand"
-description = """
-`#[derive(Rand)]` functionality for the `rand::Rand` trait.
-"""
-
-[lib]
-proc-macro = true
-
-[dependencies]
-quote = "0.3"
-syn = "0.11"
-
-[dev-dependencies]
-rand = { path = "..", version = "0.4" }
diff --git a/rand/rand-derive/README.md b/rand/rand-derive/README.md
deleted file mode 100644
index 3d1fedb..0000000
--- a/rand/rand-derive/README.md
+++ /dev/null
@@ -1,51 +0,0 @@
-
-rand_macros
-====
-
-`#[derive(Rand)]` functionality for the `rand::Rand` trait.
-
-## Usage
-Add this to your `Cargo.toml`:
-
-```toml
-[dependencies]
-rand = "0.4"
-rand_macros = "0.2"
-```
-
-and this to your crate root:
-
-```rust
-extern crate rand;
-#[macro_use]
-extern crate rand_macros;
-```
-
-## Examples
-
-`#[derive(Rand)]` can be used on any `struct` or `enum` where all fields/variants implement `rand::Rand`.
-
-```rust
-#[derive(Debug, Rand)]
-struct Foo {
- x: u16,
- y: Option<f64>,
-}
-
-#[derive(Debug, Rand)]
-enum Bar {
- X{x: u8, y: isize},
- Y([bool; 4]),
- Z,
-}
-```
-Now you can call the `Rng::gen()` function on your custom types.
-
-```rust
-use rand::Rng;
-
-let mut rng = rand::thread_rng();
-
-println!("{:?}", rng.gen::<Foo>());
-println!("{:?}", rng.gen::<Bar>());
-```
diff --git a/rand/rand-derive/src/lib.rs b/rand/rand-derive/src/lib.rs
deleted file mode 100644
index 80c803a..0000000
--- a/rand/rand-derive/src/lib.rs
+++ /dev/null
@@ -1,116 +0,0 @@
-//! Support for `#[derive(Rand)]`
-//!
-//! # Examples
-//!
-//! ```
-//! extern crate rand;
-//! #[macro_use]
-//! extern crate rand_derive;
-//!
-//! #[derive(Rand, Debug)]
-//! struct MyStruct {
-//! a: i32,
-//! b: u32,
-//! }
-//!
-//! fn main() {
-//! println!("{:?}", rand::random::<MyStruct>());
-//! }
-//! ```
-
-extern crate proc_macro;
-#[macro_use]
-extern crate quote;
-extern crate syn;
-
-use proc_macro::TokenStream;
-
-#[proc_macro_derive(Rand)]
-pub fn rand_derive(input: TokenStream) -> TokenStream {
- let s = input.to_string();
- let ast = syn::parse_derive_input(&s).unwrap();
- let gen = impl_rand_derive(&ast);
- gen.parse().unwrap()
-}
-
-fn impl_rand_derive(ast: &syn::MacroInput) -> quote::Tokens {
- let name = &ast.ident;
- let (impl_generics, ty_generics, where_clause) = ast.generics.split_for_impl();
-
- let rand = match ast.body {
- syn::Body::Struct(syn::VariantData::Struct(ref body)) => {
- let fields = body
- .iter()
- .filter_map(|field| field.ident.as_ref())
- .map(|ident| quote! { #ident: __rng.gen() })
- .collect::<Vec<_>>();
-
- quote! { #name { #(#fields,)* } }
- },
- syn::Body::Struct(syn::VariantData::Tuple(ref body)) => {
- let fields = (0..body.len())
- .map(|_| quote! { __rng.gen() })
- .collect::<Vec<_>>();
-
- quote! { #name (#(#fields),*) }
- },
- syn::Body::Struct(syn::VariantData::Unit) => {
- quote! { #name }
- },
- syn::Body::Enum(ref body) => {
- if body.is_empty() {
- panic!("`Rand` cannot be derived for enums with no variants");
- }
-
- let len = body.len();
- let mut arms = body
- .iter()
- .map(|variant| {
- let ident = &variant.ident;
- match variant.data {
- syn::VariantData::Struct(ref body) => {
- let fields = body
- .iter()
- .filter_map(|field| field.ident.as_ref())
- .map(|ident| quote! { #ident: __rng.gen() })
- .collect::<Vec<_>>();
- quote! { #name::#ident { #(#fields,)* } }
- },
- syn::VariantData::Tuple(ref body) => {
- let fields = (0..body.len())
- .map(|_| quote! { __rng.gen() })
- .collect::<Vec<_>>();
-
- quote! { #name::#ident (#(#fields),*) }
- },
- syn::VariantData::Unit => quote! { #name::#ident }
- }
- });
-
- match len {
- 1 => quote! { #(#arms)* },
- 2 => {
- let (a, b) = (arms.next(), arms.next());
- quote! { if __rng.gen() { #a } else { #b } }
- },
- _ => {
- let mut variants = arms
- .enumerate()
- .map(|(index, arm)| quote! { #index => #arm })
- .collect::<Vec<_>>();
- variants.push(quote! { _ => unreachable!() });
- quote! { match __rng.gen_range(0, #len) { #(#variants,)* } }
- },
- }
- }
- };
-
- quote! {
- impl #impl_generics ::rand::Rand for #name #ty_generics #where_clause {
- #[inline]
- fn rand<__R: ::rand::Rng>(__rng: &mut __R) -> Self {
- #rand
- }
- }
- }
-}
diff --git a/rand/rand-derive/tests/rand_macros.rs b/rand/rand-derive/tests/rand_macros.rs
deleted file mode 100644
index 938f2b0..0000000
--- a/rand/rand-derive/tests/rand_macros.rs
+++ /dev/null
@@ -1,58 +0,0 @@
-#![allow(dead_code)]
-
-extern crate rand;
-#[macro_use]
-extern crate rand_derive;
-
-use rand::Rng;
-
-#[derive(Rand)]
-struct Struct {
- x: u16,
- y: Option<f64>,
-}
-
-#[derive(Rand)]
-struct Tuple(i16, Option<f64>);
-
-#[derive(Rand)]
-struct Unit;
-
-#[derive(Rand)]
-enum EnumUnit {
- X,
-}
-
-#[derive(Rand)]
-enum Enum1 {
- X(u8, f32),
-}
-
-#[derive(Rand)]
-enum Enum2 {
- X(bool),
- Y,
-}
-
-#[derive(Rand)]
-enum Enum3 {
- X { x: u8, y: isize },
- Y([bool; 4]),
- Z,
-}
-
-#[test]
-fn smoke() {
- let mut rng = rand::XorShiftRng::new_unseeded();
-
- // check nothing horrible happens internally:
- for _ in 0..100 {
- let _ = rng.gen::<Struct>();
- let _ = rng.gen::<Tuple>();
- let _ = rng.gen::<Unit>();
- let _ = rng.gen::<EnumUnit>();
- let _ = rng.gen::<Enum1>();
- let _ = rng.gen::<Enum2>();
- let _ = rng.gen::<Enum3>();
- }
-}
generated by cgit v1.2.3 (git 2.46.0) at 2024-11-24 06:50:36 +0000