Auto merge of #57209 - estebank:suggest-raw-ident, r=petrochenkov

Suggest using raw identifiers in 2018 edition when using keywords

8 files changed, 32 insertions, 0 deletions

diff --git a/src/test/ui/parser/associated-types-project-from-hrtb-explicit.stderr b/src/test/ui/parser/associated-types-project-from-hrtb-explicit.stderr
index 51b1e71a1bb..ceea4625e3e 100644
--- a/src/test/ui/parser/associated-types-project-from-hrtb-explicit.stderr
+++ b/src/test/ui/parser/associated-types-project-from-hrtb-explicit.stderr
@@ -3,6 +3,10 @@ error: expected identifier, found keyword `for`
    |
 LL | fn foo2<I>(x: <I as for<'x> Foo<&'x isize>>::A)
    |                     ^^^ expected identifier, found keyword
+help: you can escape reserved keywords to use them as identifiers
+   |
+LL | fn foo2<I>(x: <I as r#for<'x> Foo<&'x isize>>::A)
+   |                     ^^^^^
 
 error: expected one of `::` or `>`, found `Foo`
   --> $DIR/associated-types-project-from-hrtb-explicit.rs:12:29
diff --git a/src/test/ui/parser/bad-value-ident-false.stderr b/src/test/ui/parser/bad-value-ident-false.stderr
index a78437a05f4..1a5c982a43d 100644
--- a/src/test/ui/parser/bad-value-ident-false.stderr
+++ b/src/test/ui/parser/bad-value-ident-false.stderr
@@ -3,6 +3,10 @@ error: expected identifier, found keyword `false`
    |
 LL | fn false() { } //~ ERROR expected identifier, found keyword `false`
    |    ^^^^^ expected identifier, found keyword
+help: you can escape reserved keywords to use them as identifiers
+   |
+LL | fn r#false() { } //~ ERROR expected identifier, found keyword `false`
+   |    ^^^^^^^
 
 error: aborting due to previous error
 
diff --git a/src/test/ui/parser/bad-value-ident-true.stderr b/src/test/ui/parser/bad-value-ident-true.stderr
index 948fa4db50e..f431706ccd7 100644
--- a/src/test/ui/parser/bad-value-ident-true.stderr
+++ b/src/test/ui/parser/bad-value-ident-true.stderr
@@ -3,6 +3,10 @@ error: expected identifier, found keyword `true`
    |
 LL | fn true() { } //~ ERROR expected identifier, found keyword `true`
    |    ^^^^ expected identifier, found keyword
+help: you can escape reserved keywords to use them as identifiers
+   |
+LL | fn r#true() { } //~ ERROR expected identifier, found keyword `true`
+   |    ^^^^^^
 
 error: aborting due to previous error
 
diff --git a/src/test/ui/parser/issue-15980.stderr b/src/test/ui/parser/issue-15980.stderr
index 748f21016a3..96f3b03dc92 100644
--- a/src/test/ui/parser/issue-15980.stderr
+++ b/src/test/ui/parser/issue-15980.stderr
@@ -6,6 +6,10 @@ LL |         Err(ref e) if e.kind == io::EndOfFile {
 LL |             //~^ NOTE while parsing this struct
 LL |             return
    |             ^^^^^^ expected identifier, found keyword
+help: you can escape reserved keywords to use them as identifiers
+   |
+LL |             r#return
+   |
 
 error: expected one of `.`, `=>`, `?`, or an operator, found `_`
   --> $DIR/issue-15980.rs:15:9
diff --git a/src/test/ui/parser/keyword.stderr b/src/test/ui/parser/keyword.stderr
index d97f6c5ce5a..1c729ff0833 100644
--- a/src/test/ui/parser/keyword.stderr
+++ b/src/test/ui/parser/keyword.stderr
@@ -3,6 +3,10 @@ error: expected identifier, found keyword `break`
    |
 LL | pub mod break {
    |         ^^^^^ expected identifier, found keyword
+help: you can escape reserved keywords to use them as identifiers
+   |
+LL | pub mod r#break {
+   |         ^^^^^^^
 
 error: aborting due to previous error
 
diff --git a/src/test/ui/parser/macro-keyword.stderr b/src/test/ui/parser/macro-keyword.stderr
index 0dca30a60d1..d3edb04c119 100644
--- a/src/test/ui/parser/macro-keyword.stderr
+++ b/src/test/ui/parser/macro-keyword.stderr
@@ -3,6 +3,10 @@ error: expected identifier, found reserved keyword `macro`
    |
 LL | fn macro() {  //~ ERROR expected identifier, found reserved keyword `macro`
    |    ^^^^^ expected identifier, found reserved keyword
+help: you can escape reserved keywords to use them as identifiers
+   |
+LL | fn r#macro() {  //~ ERROR expected identifier, found reserved keyword `macro`
+   |    ^^^^^^^
 
 error: aborting due to previous error
 
diff --git a/src/test/ui/parser/removed-syntax-field-let.stderr b/src/test/ui/parser/removed-syntax-field-let.stderr
index bec50e59664..0d489beae12 100644
--- a/src/test/ui/parser/removed-syntax-field-let.stderr
+++ b/src/test/ui/parser/removed-syntax-field-let.stderr
@@ -3,6 +3,10 @@ error: expected identifier, found keyword `let`
    |
 LL |     let foo: (),
    |     ^^^ expected identifier, found keyword
+help: you can escape reserved keywords to use them as identifiers
+   |
+LL |     r#let foo: (),
+   |     ^^^^^
 
 error: expected `:`, found `foo`
   --> $DIR/removed-syntax-field-let.rs:4:9
diff --git a/src/test/ui/parser/use-as-where-use-ends-with-mod-sep.stderr b/src/test/ui/parser/use-as-where-use-ends-with-mod-sep.stderr
index 3be31ce9cec..51e1a02cbd7 100644
--- a/src/test/ui/parser/use-as-where-use-ends-with-mod-sep.stderr
+++ b/src/test/ui/parser/use-as-where-use-ends-with-mod-sep.stderr
@@ -3,6 +3,10 @@ error: expected identifier, found keyword `as`
    |
 LL | use std::any:: as foo; //~ ERROR expected identifier, found keyword `as`
    |                ^^ expected identifier, found keyword
+help: you can escape reserved keywords to use them as identifiers
+   |
+LL | use std::any:: r#as foo; //~ ERROR expected identifier, found keyword `as`
+   |                ^^^^
 
 error: expected one of `::`, `;`, or `as`, found `foo`
   --> $DIR/use-as-where-use-ends-with-mod-sep.rs:3:19