internal: remove dead code

[rust.git] / crates / ide_db / src / helpers / famous_defs_fixture.rs

diff --git a/crates/ide_db/src/helpers/famous_defs_fixture.rs b/crates/ide_db/src/helpers/famous_defs_fixture.rs
index d3464ae17b95ba4bda3852415c994af1393f78cf..551203936bd781c4e22bf2d6c76ef9757bb4cc22 100644 (file)
--- a/crates/ide_db/src/helpers/famous_defs_fixture.rs
+++ b/crates/ide_db/src/helpers/famous_defs_fixture.rs
@@ -14,6 +14,10 @@ pub mod convert {
     pub trait From<T> {
         fn from(t: T) -> Self;
     }
+
+    pub trait Into<T> {
+        pub fn into(self) -> T;
+    }
 }
 
 pub mod default {
@@ -22,94 +26,6 @@ pub trait Default {
     }
 }
 
-pub mod iter {
-    pub use self::traits::{collect::IntoIterator, iterator::Iterator};
-    mod traits {
-        pub(crate) mod iterator {
-            use crate::option::Option;
-            pub trait Iterator {
-                type Item;
-                fn next(&mut self) -> Option<Self::Item>;
-                fn by_ref(&mut self) -> &mut Self {
-                    self
-                }
-                fn take(self, n: usize) -> crate::iter::Take<Self> {
-                    crate::iter::Take { inner: self }
-                }
-            }
-
-            impl<I: Iterator> Iterator for &mut I {
-                type Item = I::Item;
-                fn next(&mut self) -> Option<I::Item> {
-                    (**self).next()
-                }
-            }
-        }
-        pub(crate) mod collect {
-            pub trait IntoIterator {
-                type Item;
-            }
-        }
-    }
-
-    pub use self::sources::*;
-    pub(crate) mod sources {
-        use super::Iterator;
-        use crate::option::Option::{self, *};
-        pub struct Repeat<A> {
-            element: A,
-        }
-
-        pub fn repeat<T>(elt: T) -> Repeat<T> {
-            Repeat { element: elt }
-        }
-
-        impl<A> Iterator for Repeat<A> {
-            type Item = A;
-
-            fn next(&mut self) -> Option<A> {
-                None
-            }
-        }
-    }
-
-    pub use self::adapters::*;
-    pub(crate) mod adapters {
-        use super::Iterator;
-        use crate::option::Option::{self, *};
-        pub struct Take<I> {
-            pub(crate) inner: I,
-        }
-        impl<I> Iterator for Take<I>
-        where
-            I: Iterator,
-        {
-            type Item = <I as Iterator>::Item;
-            fn next(&mut self) -> Option<<I as Iterator>::Item> {
-                None
-            }
-        }
-    }
-}
-
-pub mod ops {
-    #[lang = "fn"]
-    pub trait Fn<Args>: FnMut<Args> {
-        extern "rust-call" fn call(&self, args: Args) -> Self::Output;
-    }
-
-    #[lang = "fn_mut"]
-    pub trait FnMut<Args>: FnOnce<Args> {
-        extern "rust-call" fn call_mut(&mut self, args: Args) -> Self::Output;
-    }
-    #[lang = "fn_once"]
-    pub trait FnOnce<Args> {
-        #[lang = "fn_once_output"]
-        type Output;
-        extern "rust-call" fn call_once(self, args: Args) -> Self::Output;
-    }
-}
-
 pub mod option {
     pub enum Option<T> {
         None,
@@ -118,17 +34,19 @@ pub enum Option<T> {
 }
 
 pub mod prelude {
-    pub use crate::{
-        cmp::Ord,
-        convert::From,
-        default::Default,
-        iter::{IntoIterator, Iterator},
-        ops::{Fn, FnMut, FnOnce},
-        option::Option::{self, *},
-    };
+    pub mod rust_2018 {
+        pub use crate::{
+            cmp::Ord,
+            convert::{From, Into},
+            default::Default,
+            iter::{IntoIterator, Iterator},
+            ops::{Fn, FnMut, FnOnce},
+            option::Option::{self, *},
+        };
+    }
 }
 #[prelude_import]
-pub use prelude::*;
+pub use prelude::rust_2018::*;
 //- /libstd.rs crate:std deps:core
 //! Signatures of traits, types and functions from the std lib for use in tests.
 
@@ -137,3 +55,5 @@ mod return_keyword {}
 
 /// Docs for prim_str
 mod prim_str {}
+
+pub use core::ops;