auto merge of #5575 : apasel422/rust/simplify-impls, r=thestinger

Author: bors

src/librustc/middle/liveness.rs

@@ -111,7 +111,6 @@ use middle::typeck;
 use middle::moves;
 use util::ppaux::ty_to_str;
 
-use core::cmp;
 use core::hashmap::linear::LinearMap;
 use core::io::WriterUtil;
 use core::io;
@@ -137,58 +136,19 @@ use syntax::{visit, ast_util};
 // if it detects an outstanding loan (that is, the addr is taken).
 pub type last_use_map = @mut LinearMap<node_id, @mut ~[node_id]>;
 
+#[deriving(Eq)]
 struct Variable(uint);
+#[deriving(Eq)]
 struct LiveNode(uint);
 
-impl cmp::Eq for Variable {
-    fn eq(&self, other: &Variable) -> bool { *(*self) == *(*other) }
-    fn ne(&self, other: &Variable) -> bool { *(*self) != *(*other) }
-}
-
-impl cmp::Eq for LiveNode {
-    fn eq(&self, other: &LiveNode) -> bool { *(*self) == *(*other) }
-    fn ne(&self, other: &LiveNode) -> bool { *(*self) != *(*other) }
-}
-
+#[deriving(Eq)]
 enum LiveNodeKind {
     FreeVarNode(span),
     ExprNode(span),
     VarDefNode(span),
     ExitNode
 }
 
-impl cmp::Eq for LiveNodeKind {
-    fn eq(&self, other: &LiveNodeKind) -> bool {
-        match (*self) {
-            FreeVarNode(e0a) => {
-                match (*other) {
-                    FreeVarNode(e0b) => e0a == e0b,
-                    _ => false
-                }
-            }
-            ExprNode(e0a) => {
-                match (*other) {
-                    ExprNode(e0b) => e0a == e0b,
-                    _ => false
-                }
-            }
-            VarDefNode(e0a) => {
-                match (*other) {
-                    VarDefNode(e0b) => e0a == e0b,
-                    _ => false
-                }
-            }
-            ExitNode => {
-                match (*other) {
-                    ExitNode => true,
-                    _ => false
-                }
-            }
-        }
-    }
-    fn ne(&self, other: &LiveNodeKind) -> bool { !(*self).eq(other) }
-}
-
 fn live_node_kind_to_str(lnk: LiveNodeKind, cx: ty::ctxt) -> ~str {
     let cm = cx.sess.codemap;
     match lnk {

src/librustc/middle/trans/cabi_x86_64.rs

@@ -18,13 +18,13 @@ use lib::llvm::struct_tys;
 use middle::trans::common::*;
 use middle::trans::cabi::*;
 
-use core::cmp;
 use core::libc::c_uint;
 use core::option;
 use core::option::Option;
 use core::uint;
 use core::vec;
 
+#[deriving(Eq)]
 enum x86_64_reg_class {
     no_class,
     integer_class,
@@ -40,13 +40,6 @@ enum x86_64_reg_class {
     memory_class
 }
 
-impl cmp::Eq for x86_64_reg_class {
-    fn eq(&self, other: &x86_64_reg_class) -> bool {
-        ((*self) as uint) == ((*other) as uint)
-    }
-    fn ne(&self, other: &x86_64_reg_class) -> bool { !(*self).eq(other) }
-}
-
 fn is_sse(++c: x86_64_reg_class) -> bool {
     return match c {
         sse_fs_class | sse_fv_class |

src/librustc/middle/trans/datum.rs

@@ -104,7 +104,6 @@ use middle::ty;
 use util::common::indenter;
 use util::ppaux::ty_to_str;
 
-use core::cmp;
 use core::container::Set; // XXX: this should not be necessary
 use core::to_bytes;
 use core::uint;
@@ -140,6 +139,7 @@ pub struct DatumBlock {
     datum: Datum,
 }
 
+#[deriving(Eq)]
 pub enum DatumMode {
     /// `val` is a pointer to the actual value (and thus has type *T)
     ByRef,
@@ -158,13 +158,6 @@ pub impl DatumMode {
     }
 }
 
-impl cmp::Eq for DatumMode {
-    fn eq(&self, other: &DatumMode) -> bool {
-        (*self) as uint == (*other as uint)
-    }
-    fn ne(&self, other: &DatumMode) -> bool { !(*self).eq(other) }
-}
-
 impl to_bytes::IterBytes for DatumMode {
     fn iter_bytes(&self, +lsb0: bool, f: to_bytes::Cb) {
         (*self as uint).iter_bytes(lsb0, f)

src/librustc/middle/trans/expr.rs

@@ -160,6 +160,7 @@ use syntax::codemap;
 // These are passed around by the code generating functions to track the
 // destination of a computation's value.
 
+#[deriving(Eq)]
 pub enum Dest {
     SaveIn(ValueRef),
     Ignore,
@@ -174,18 +175,6 @@ pub impl Dest {
     }
 }
 
-impl cmp::Eq for Dest {
-    fn eq(&self, other: &Dest) -> bool {
-        match ((*self), (*other)) {
-            (SaveIn(e0a), SaveIn(e0b)) => e0a == e0b,
-            (Ignore, Ignore) => true,
-            (SaveIn(*), _) => false,
-            (Ignore, _) => false,
-        }
-    }
-    fn ne(&self, other: &Dest) -> bool { !(*self).eq(other) }
-}
-
 fn drop_and_cancel_clean(bcx: block, dat: Datum) -> block {
     let bcx = dat.drop_val(bcx);
     dat.cancel_clean(bcx);
@@ -1682,6 +1671,7 @@ fn float_cast(bcx: block, lldsttype: TypeRef, llsrctype: TypeRef,
     } else { llsrc };
 }
 
+#[deriving(Eq)]
 pub enum cast_kind {
     cast_pointer,
     cast_integral,
@@ -1690,24 +1680,6 @@ pub enum cast_kind {
     cast_other,
 }
 
-impl cmp::Eq for cast_kind {
-    fn eq(&self, other: &cast_kind) -> bool {
-        match ((*self), (*other)) {
-            (cast_pointer, cast_pointer) => true,
-            (cast_integral, cast_integral) => true,
-            (cast_float, cast_float) => true,
-            (cast_enum, cast_enum) => true,
-            (cast_other, cast_other) => true,
-            (cast_pointer, _) => false,
-            (cast_integral, _) => false,
-            (cast_float, _) => false,
-            (cast_enum, _) => false,
-            (cast_other, _) => false,
-        }
-    }
-    fn ne(&self, other: &cast_kind) -> bool { !(*self).eq(other) }
-}
-
 pub fn cast_type_kind(t: ty::t) -> cast_kind {
     match ty::get(t).sty {
         ty::ty_float(*)   => cast_float,

src/librustc/middle/ty.rs

@@ -76,6 +76,7 @@ pub struct method {
     def_id: ast::def_id
 }
 
+#[deriving(Eq)]
 pub struct mt {
     ty: t,
     mutbl: ast::mutability,
@@ -161,22 +162,9 @@ pub type opt_region_variance = Option<region_variance>;
 
 #[auto_encode]
 #[auto_decode]
+#[deriving(Eq)]
 pub enum region_variance { rv_covariant, rv_invariant, rv_contravariant }
 
-impl cmp::Eq for region_variance {
-    fn eq(&self, other: &region_variance) -> bool {
-        match ((*self), (*other)) {
-            (rv_covariant, rv_covariant) => true,
-            (rv_invariant, rv_invariant) => true,
-            (rv_contravariant, rv_contravariant) => true,
-            (rv_covariant, _) => false,
-            (rv_invariant, _) => false,
-            (rv_contravariant, _) => false
-        }
-    }
-    fn ne(&self, other: &region_variance) -> bool { !(*self).eq(other) }
-}
-
 #[auto_encode]
 #[auto_decode]
 pub enum AutoAdjustment {
@@ -417,6 +405,7 @@ impl to_bytes::IterBytes for param_ty {
 /// Representation of regions:
 #[auto_encode]
 #[auto_decode]
+#[deriving(Eq)]
 pub enum Region {
     /// Bound regions are found (primarily) in function types.  They indicate
     /// region parameters that have yet to be replaced with actual regions
@@ -446,6 +435,7 @@ pub enum Region {
 
 #[auto_encode]
 #[auto_decode]
+#[deriving(Eq)]
 pub enum bound_region {
     /// The self region for structs, impls (&T in a type defn or &'self T)
     br_self,
@@ -585,6 +575,7 @@ pub enum type_err {
     terr_float_mismatch(expected_found<ast::float_ty>)
 }
 
+#[deriving(Eq)]
 pub enum param_bound {
     bound_copy,
     bound_durable,
@@ -4367,127 +4358,6 @@ pub fn get_impl_id(tcx: ctxt, trait_id: def_id, self_ty: t) -> def_id {
     }
 }
 
-impl cmp::Eq for mt {
-    fn eq(&self, other: &mt) -> bool {
-        (*self).ty == (*other).ty && (*self).mutbl == (*other).mutbl
-    }
-    fn ne(&self, other: &mt) -> bool { !(*self).eq(other) }
-}
-
-impl cmp::Eq for Region {
-    fn eq(&self, other: &Region) -> bool {
-        match (*self) {
-            re_bound(e0a) => {
-                match (*other) {
-                    re_bound(e0b) => e0a == e0b,
-                    _ => false
-                }
-            }
-            re_free(e0a, e1a) => {
-                match (*other) {
-                    re_free(e0b, e1b) => e0a == e0b && e1a == e1b,
-                    _ => false
-                }
-            }
-            re_scope(e0a) => {
-                match (*other) {
-                    re_scope(e0b) => e0a == e0b,
-                    _ => false
-                }
-            }
-            re_static => {
-                match (*other) {
-                    re_static => true,
-                    _ => false
-                }
-            }
-            re_infer(e0a) => {
-                match (*other) {
-                    re_infer(e0b) => e0a == e0b,
-                    _ => false
-                }
-            }
-        }
-    }
-    fn ne(&self, other: &Region) -> bool { !(*self).eq(other) }
-}
-
-impl cmp::Eq for bound_region {
-    fn eq(&self, other: &bound_region) -> bool {
-        match (*self) {
-            br_self => {
-                match (*other) {
-                    br_self => true,
-                    _ => false
-                }
-            }
-            br_anon(e0a) => {
-                match (*other) {
-                    br_anon(e0b) => e0a == e0b,
-                    _ => false
-                }
-            }
-            br_named(e0a) => {
-                match (*other) {
-                    br_named(e0b) => e0a == e0b,
-                    _ => false
-                }
-            }
-            br_cap_avoid(e0a, e1a) => {
-                match (*other) {
-                    br_cap_avoid(e0b, e1b) => e0a == e0b && e1a == e1b,
-                    _ => false
-                }
-            }
-            br_fresh(e0a) => {
-                match (*other) {
-                    br_fresh(e0b) => e0a == e0b,
-                    _ => false
-                }
-            }
-        }
-    }
-    fn ne(&self, other: &bound_region) -> bool { !(*self).eq(other) }
-}
-
-impl cmp::Eq for param_bound {
-    fn eq(&self, other: &param_bound) -> bool {
-        match (*self) {
-            bound_copy => {
-                match (*other) {
-                    bound_copy => true,
-                    _ => false
-                }
-            }
-            bound_durable => {
-                match (*other) {
-                    bound_durable => true,
-                    _ => false
-                }
-            }
-            bound_owned => {
-                match (*other) {
-                    bound_owned => true,
-                    _ => false
-                }
-            }
-            bound_const => {
-                match (*other) {
-                    bound_const => true,
-                    _ => false
-                }
-            }
-            bound_trait(e0a) => {
-                match (*other) {
-                    bound_trait(e0b) => e0a == e0b,
-                    _ => false
-                }
-            }
-        }
-    }
-    fn ne(&self, other: &param_bound) -> bool { !self.eq(other) }
-}
-
 // Local Variables:
 // mode: rust
 // fill-column: 78;