//!
//! ```{.text}
//! EnumNonMatchingCollapsed(
-//! vec![<ident of self>, <ident of __arg_1>],
+//! vec![<ident of self>, <ident of arg_1>],
//! &[<ast::Variant for C0>, <ast::Variant for C1>],
-//! &[<ident for self index value>, <ident of __arg_1 index value>])
+//! &[<ident for self index value>, <ident of arg_1 index value>])
//! ```
//!
//! It is the same for when the arguments are flipped to `C1 {x}` and
//! `C0(a)`; the only difference is what the values of the identifiers
-//! <ident for self index value> and <ident of __arg_1 index value> will
+//! <ident for self index value> and <ident of arg_1 index value> will
//! be in the generated code.
//!
//! `EnumNonMatchingCollapsed` deliberately provides far less information
for (i, ty) in self.args.iter().enumerate() {
let ast_ty = ty.to_ty(cx, trait_.span, type_ident, generics);
- let ident = cx.ident_of(&format!("__arg_{}", i));
+ let ident = cx.ident_of(&format!("arg_{}", i));
arg_tys.push((ident, ast_ty));
let arg_expr = cx.expr_ident(trait_.span, ident);
///
/// // equivalent to:
/// impl PartialEq for A {
- /// fn eq(&self, __arg_1: &A) -> bool {
+ /// fn eq(&self, arg_1: &A) -> bool {
/// match *self {
- /// A {x: ref __self_0_0, y: ref __self_0_1} => {
- /// match *__arg_1 {
- /// A {x: ref __self_1_0, y: ref __self_1_1} => {
- /// __self_0_0.eq(__self_1_0) && __self_0_1.eq(__self_1_1)
+ /// A {x: ref self_0_0, y: ref self_0_1} => {
+ /// match *arg_1 {
+ /// A {x: ref self_1_0, y: ref self_1_1} => {
+ /// self_0_0.eq(self_1_0) && self_0_1.eq(self_1_1)
/// }
/// }
/// }
trait_.create_struct_pattern(cx,
struct_path,
struct_def,
- &format!("__self_{}",
+ &format!("self_{}",
i),
ast::Mutability::Immutable);
patterns.push(pat);
/// // is equivalent to
///
/// impl PartialEq for A {
- /// fn eq(&self, __arg_1: &A) -> ::bool {
- /// match (&*self, &*__arg_1) {
+ /// fn eq(&self, arg_1: &A) -> ::bool {
+ /// match (&*self, &*arg_1) {
/// (&A1, &A1) => true,
- /// (&A2(ref __self_0),
- /// &A2(ref __arg_1_0)) => (*__self_0).eq(&(*__arg_1_0)),
+ /// (&A2(ref self_0),
+ /// &A2(ref arg_1_0)) => (*self_0).eq(&(*arg_1_0)),
/// _ => {
- /// let __self_vi = match *self { A1(..) => 0, A2(..) => 1 };
- /// let __arg_1_vi = match *__arg_1 { A1(..) => 0, A2(..) => 1 };
+ /// let self_vi = match *self { A1(..) => 0, A2(..) => 1 };
+ /// let arg_1_vi = match *arg_1 { A1(..) => 0, A2(..) => 1 };
/// false
/// }
/// }
/// }
/// ```
///
- /// (Of course `__self_vi` and `__arg_1_vi` are unused for
+ /// (Of course `self_vi` and `arg_1_vi` are unused for
/// `PartialEq`, and those subcomputations will hopefully be removed
- /// as their results are unused. The point of `__self_vi` and
- /// `__arg_1_vi` is for `PartialOrd`; see #15503.)
+ /// as their results are unused. The point of `self_vi` and
+ /// `arg_1_vi` is for `PartialOrd`; see #15503.)
fn expand_enum_method_body<'b>(&self,
cx: &mut ExtCtxt,
trait_: &TraitDef<'b>,
/// for each of the self-args, carried in precomputed variables.
/// ```{.text}
- /// let __self0_vi = unsafe {
+ /// let self0_vi = unsafe {
/// std::intrinsics::discriminant_value(&self) } as i32;
- /// let __self1_vi = unsafe {
- /// std::intrinsics::discriminant_value(&__arg1) } as i32;
- /// let __self2_vi = unsafe {
- /// std::intrinsics::discriminant_value(&__arg2) } as i32;
+ /// let self1_vi = unsafe {
+ /// std::intrinsics::discriminant_value(&arg1) } as i32;
+ /// let self2_vi = unsafe {
+ /// std::intrinsics::discriminant_value(&arg2) } as i32;
///
- /// if __self0_vi == __self1_vi && __self0_vi == __self2_vi && ... {
+ /// if self0_vi == self1_vi && self0_vi == self2_vi && ... {
/// match (...) {
/// (Variant1, Variant1, ...) => Body1
/// (Variant2, Variant2, ...) => Body2,
let self_arg_names = self_args.iter().enumerate()
.map(|(arg_count, _self_arg)| {
if arg_count == 0 {
- "__self".to_string()
+ "self".to_string()
} else {
- format!("__arg_{}", arg_count)
+ format!("arg_{}", arg_count)
}
})
.collect::<Vec<String>>();
// with three Self args, builds three statements:
//
// ```
- // let __self0_vi = unsafe {
+ // let self0_vi = unsafe {
// std::intrinsics::discriminant_value(&self) } as i32;
- // let __self1_vi = unsafe {
- // std::intrinsics::discriminant_value(&__arg1) } as i32;
- // let __self2_vi = unsafe {
- // std::intrinsics::discriminant_value(&__arg2) } as i32;
+ // let self1_vi = unsafe {
+ // std::intrinsics::discriminant_value(&arg1) } as i32;
+ // let self2_vi = unsafe {
+ // std::intrinsics::discriminant_value(&arg2) } as i32;
// ```
let mut index_let_stmts: Vec<ast::Stmt> = Vec::new();
//We also build an expression which checks whether all discriminants are equal
- // discriminant_test = __self0_vi == __self1_vi && __self0_vi == __self2_vi && ...
+ // discriminant_test = self0_vi == self1_vi && self0_vi == self2_vi && ...
let mut discriminant_test = cx.expr_bool(sp, true);
let target_type_name =
// down to desired l-values, but we cannot actually deref
// them when they are fed as r-values into a tuple
// expression; here add a layer of borrowing, turning
- // `(*self, *__arg_0, ...)` into `(&*self, &*__arg_0, ...)`.
+ // `(*self, *arg_0, ...)` into `(&*self, &*arg_0, ...)`.
let borrowed_self_args = self_args.move_map(|self_arg| cx.expr_addr_of(sp, self_arg));
let match_arg = cx.expr(sp, ast::ExprKind::Tup(borrowed_self_args));
// }
// }
// else {
- // <delegated expression referring to __self0_vi, et al.>
+ // <delegated expression referring to self0_vi, et al.>
// }
let all_match = cx.expr_match(sp, match_arg, match_arms);
let arm_expr = cx.expr_if(sp, discriminant_test, all_match, Some(arm_expr));
// error-prone, since the catch-all as defined above would
// generate code like this:
//
- // _ => { let __self0 = match *self { };
- // let __self1 = match *__arg_0 { };
+ // _ => { let self0 = match *self { };
+ // let self1 = match *arg_0 { };
// <catch-all-expr> }
//
// Which is yields bindings for variables which type
// down to desired l-values, but we cannot actually deref
// them when they are fed as r-values into a tuple
// expression; here add a layer of borrowing, turning
- // `(*self, *__arg_0, ...)` into `(&*self, &*__arg_0, ...)`.
+ // `(*self, *arg_0, ...)` into `(&*self, &*arg_0, ...)`.
let borrowed_self_args = self_args.move_map(|self_arg| cx.expr_addr_of(sp, self_arg));
let match_arg = cx.expr(sp, ast::ExprKind::Tup(borrowed_self_args));
cx.expr_match(sp, match_arg, match_arms)
/// process the collected results. i.e.
///
/// ```ignore
-/// f(cx, span, vec![self_1.method(__arg_1_1, __arg_2_1),
-/// self_2.method(__arg_1_2, __arg_2_2)])
+/// f(cx, span, vec![self_1.method(arg_1_1, arg_2_1),
+/// self_2.method(arg_1_2, arg_2_2)])
/// ```
#[inline]
pub fn cs_same_method<F>(f: F,
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