From cf8600d1bb1b164fa853d21551a0e9123a75b684 Mon Sep 17 00:00:00 2001 From: Oliver Schneider Date: Tue, 24 Oct 2017 16:22:35 +0200 Subject: [PATCH 1/3] Add a test reproducing the quadratic json explosion --- src/test/ui/lint/use_suggestion_json.rs | 21 +++++++++++++++++++++ src/test/ui/lint/use_suggestion_json.stderr | 2 ++ 2 files changed, 23 insertions(+) create mode 100644 src/test/ui/lint/use_suggestion_json.rs create mode 100644 src/test/ui/lint/use_suggestion_json.stderr diff --git a/src/test/ui/lint/use_suggestion_json.rs b/src/test/ui/lint/use_suggestion_json.rs new file mode 100644 index 0000000000000..20c24d6405042 --- /dev/null +++ b/src/test/ui/lint/use_suggestion_json.rs @@ -0,0 +1,21 @@ +// Copyright 2017 The Rust Project Developers. See the COPYRIGHT +// file at the top-level directory of this distribution and at +// http://rust-lang.org/COPYRIGHT. +// +// Licensed under the Apache License, Version 2.0 or the MIT license +// , at your +// option. This file may not be copied, modified, or distributed +// except according to those terms. + +// compile-flags: --error-format json + +// The output for humans should just highlight the whole span without showing +// the suggested replacement, but we also want to test that suggested +// replacement only removes one set of parentheses, rather than naïvely +// stripping away any starting or ending parenthesis characters—hence this +// test of the JSON error format. + +fn main() { + let x: Iter; +} diff --git a/src/test/ui/lint/use_suggestion_json.stderr b/src/test/ui/lint/use_suggestion_json.stderr new file mode 100644 index 0000000000000..6dd82ad1eb49a --- /dev/null +++ b/src/test/ui/lint/use_suggestion_json.stderr @@ -0,0 +1,2 @@ +{"message":"cannot find type `Iter` in this scope","code":{"code":"E0412","explanation":"/nThe type name used is not in scope./n/nErroneous code examples:/n/n```compile_fail,E0412/nimpl Something {} // error: type name `Something` is not in scope/n/n// or:/n/ntrait Foo {/n fn bar(N); // error: type name `N` is not in scope/n}/n/n// or:/n/nfn foo(x: T) {} // type name `T` is not in scope/n```/n/nTo fix this error, please verify you didn't misspell the type name, you did/ndeclare it or imported it into the scope. Examples:/n/n```/nstruct Something;/n/nimpl Something {} // ok!/n/n// or:/n/ntrait Foo {/n type N;/n/n fn bar(_: Self::N); // ok!/n}/n/n// or:/n/nfn foo(x: T) {} // ok!/n```/n/nAnother case that causes this error is when a type is imported into a parent/nmodule. To fix this, you can follow the suggestion and use File directly or/n`use super::File;` which will import the types from the parent namespace. An/nexample that causes this error is below:/n/n```compile_fail,E0412/nuse std::fs::File;/n/nmod foo {/n fn some_function(f: File) {}/n}/n```/n/n```/nuse std::fs::File;/n/nmod foo {/n // either/n use super::File;/n // or/n // use std::fs::File;/n fn foo(f: File) {}/n}/n# fn main() {} // don't insert it for us; that'll break imports/n```/n"},"level":"error","spans":[{"file_name":"$DIR/use_suggestion_json.rs","byte_start":862,"byte_end":866,"line_start":20,"line_end":20,"column_start":12,"column_end":16,"is_primary":true,"text":[{"text":" let x: Iter;","highlight_start":12,"highlight_end":16}],"label":"not found in this scope","suggested_replacement":null,"expansion":null}],"children":[{"message":"possible candidates are found in other modules, you can import them into scope","code":null,"level":"help","spans":[{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn 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std::result::Iter;"},{"message":"possible candidates are found in other modules, you can import them into scope","code":null,"level":"help","spans":[{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::collections::binary_heap::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::collections::btree_map::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::collections::btree_set::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::collections::hash_map::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::collections::hash_set::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::collections::linked_list::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::collections::vec_deque::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::option::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::path::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::result::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::slice::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::sync::mpsc::Iter;/n/n","expansion":null}],"children":[],"rendered":"use std::slice::Iter;"},{"message":"possible candidates are found in other modules, you can import them into scope","code":null,"level":"help","spans":[{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::collections::binary_heap::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::collections::btree_map::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::collections::btree_set::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::collections::hash_map::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::collections::hash_set::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::collections::linked_list::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::collections::vec_deque::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::option::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::path::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::result::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::slice::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::sync::mpsc::Iter;/n/n","expansion":null}],"children":[],"rendered":"use std::sync::mpsc::Iter;"}],"rendered":null} +{"message":"aborting due to previous error","code":null,"level":"error","spans":[],"children":[],"rendered":null} From 7bb05dbdef8a37dfa6b62d06a257fa9611564c84 Mon Sep 17 00:00:00 2001 From: Oliver Schneider Date: Tue, 24 Oct 2017 16:41:16 +0200 Subject: [PATCH 2/3] Reduce the repetition in json error output --- src/libsyntax/json.rs | 26 +++++++------------ .../lint/unused_parens_json_suggestion.stderr | 2 +- src/test/ui/lint/use_suggestion_json.stderr | 2 +- 3 files changed, 11 insertions(+), 19 deletions(-) diff --git a/src/libsyntax/json.rs b/src/libsyntax/json.rs index db49ab1034358..b8151819bffed 100644 --- a/src/libsyntax/json.rs +++ b/src/libsyntax/json.rs @@ -153,17 +153,15 @@ impl Diagnostic { fn from_diagnostic_builder(db: &DiagnosticBuilder, je: &JsonEmitter) -> Diagnostic { - let sugg = db.suggestions.iter().flat_map(|sugg| { - je.render(sugg).into_iter().map(move |rendered| { - Diagnostic { - message: sugg.msg.clone(), - code: None, - level: "help", - spans: DiagnosticSpan::from_suggestion(sugg, je), - children: vec![], - rendered: Some(rendered), - } - }) + let sugg = db.suggestions.iter().map(|sugg| { + Diagnostic { + message: sugg.msg.clone(), + code: None, + level: "help", + spans: DiagnosticSpan::from_suggestion(sugg, je), + children: vec![], + rendered: None, + } }); Diagnostic { message: db.message(), @@ -356,9 +354,3 @@ impl DiagnosticCode { }) } } - -impl JsonEmitter { - fn render(&self, suggestion: &CodeSuggestion) -> Vec { - suggestion.splice_lines(&*self.cm).iter().map(|line| line.0.to_owned()).collect() - } -} diff --git a/src/test/ui/lint/unused_parens_json_suggestion.stderr b/src/test/ui/lint/unused_parens_json_suggestion.stderr index 4b4dd92855da0..701334d889045 100644 --- a/src/test/ui/lint/unused_parens_json_suggestion.stderr +++ b/src/test/ui/lint/unused_parens_json_suggestion.stderr @@ -1 +1 @@ -{"message":"unnecessary parentheses around assigned value","code":null,"level":"warning","spans":[{"file_name":"$DIR/unused_parens_json_suggestion.rs","byte_start":976,"byte_end":989,"line_start":22,"line_end":22,"column_start":14,"column_end":27,"is_primary":true,"text":[{"text":" let _a = (1 / (2 + 3));","highlight_start":14,"highlight_end":27}],"label":null,"suggested_replacement":null,"expansion":null}],"children":[{"message":"#[warn(unused_parens)] on by default","code":null,"level":"note","spans":[],"children":[],"rendered":null},{"message":"remove these parentheses","code":null,"level":"help","spans":[{"file_name":"$DIR/unused_parens_json_suggestion.rs","byte_start":976,"byte_end":989,"line_start":22,"line_end":22,"column_start":14,"column_end":27,"is_primary":true,"text":[{"text":" let _a = (1 / (2 + 3));","highlight_start":14,"highlight_end":27}],"label":null,"suggested_replacement":"1 / (2 + 3)","expansion":null}],"children":[],"rendered":" let _a = 1 / (2 + 3);"}],"rendered":null} +{"message":"unnecessary parentheses around assigned value","code":null,"level":"warning","spans":[{"file_name":"$DIR/unused_parens_json_suggestion.rs","byte_start":976,"byte_end":989,"line_start":22,"line_end":22,"column_start":14,"column_end":27,"is_primary":true,"text":[{"text":" let _a = (1 / (2 + 3));","highlight_start":14,"highlight_end":27}],"label":null,"suggested_replacement":null,"expansion":null}],"children":[{"message":"#[warn(unused_parens)] on by default","code":null,"level":"note","spans":[],"children":[],"rendered":null},{"message":"remove these parentheses","code":null,"level":"help","spans":[{"file_name":"$DIR/unused_parens_json_suggestion.rs","byte_start":976,"byte_end":989,"line_start":22,"line_end":22,"column_start":14,"column_end":27,"is_primary":true,"text":[{"text":" let _a = (1 / (2 + 3));","highlight_start":14,"highlight_end":27}],"label":null,"suggested_replacement":"1 / (2 + 3)","expansion":null}],"children":[],"rendered":null}],"rendered":null} diff --git a/src/test/ui/lint/use_suggestion_json.stderr b/src/test/ui/lint/use_suggestion_json.stderr index 6dd82ad1eb49a..2ebe212b93ddb 100644 --- a/src/test/ui/lint/use_suggestion_json.stderr +++ b/src/test/ui/lint/use_suggestion_json.stderr @@ -1,2 +1,2 @@ -{"message":"cannot find type `Iter` in this scope","code":{"code":"E0412","explanation":"/nThe type name used is not in scope./n/nErroneous code examples:/n/n```compile_fail,E0412/nimpl Something {} // error: type name `Something` is not in scope/n/n// or:/n/ntrait Foo {/n fn bar(N); // error: type name `N` is not in scope/n}/n/n// or:/n/nfn foo(x: T) {} // type name `T` is not in scope/n```/n/nTo fix this error, please verify you didn't misspell the type name, you did/ndeclare it or imported it into the scope. Examples:/n/n```/nstruct Something;/n/nimpl Something {} // ok!/n/n// or:/n/ntrait Foo {/n type N;/n/n fn bar(_: Self::N); // ok!/n}/n/n// or:/n/nfn foo(x: T) {} // ok!/n```/n/nAnother case that causes this error is when a type is imported into a parent/nmodule. To fix this, you can follow the suggestion and use File directly or/n`use super::File;` which will import the types from the parent namespace. An/nexample that causes this error is below:/n/n```compile_fail,E0412/nuse std::fs::File;/n/nmod foo {/n fn some_function(f: File) {}/n}/n```/n/n```/nuse std::fs::File;/n/nmod foo {/n // either/n use super::File;/n // or/n // use std::fs::File;/n fn foo(f: File) {}/n}/n# fn main() {} // don't insert it for us; that'll break imports/n```/n"},"level":"error","spans":[{"file_name":"$DIR/use_suggestion_json.rs","byte_start":862,"byte_end":866,"line_start":20,"line_end":20,"column_start":12,"column_end":16,"is_primary":true,"text":[{"text":" let x: Iter;","highlight_start":12,"highlight_end":16}],"label":"not found in this scope","suggested_replacement":null,"expansion":null}],"children":[{"message":"possible candidates are found in other modules, you can import them into scope","code":null,"level":"help","spans":[{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::collections::binary_heap::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::collections::btree_map::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::collections::btree_set::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() 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std::slice::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::sync::mpsc::Iter;/n/n","expansion":null}],"children":[],"rendered":"use std::sync::mpsc::Iter;"}],"rendered":null} +{"message":"cannot find type `Iter` in this scope","code":{"code":"E0412","explanation":"/nThe type name used is not in scope./n/nErroneous code examples:/n/n```compile_fail,E0412/nimpl Something {} // error: type name `Something` is not in scope/n/n// or:/n/ntrait Foo {/n fn bar(N); // error: type name `N` is not in scope/n}/n/n// or:/n/nfn foo(x: T) {} // type name `T` is not in scope/n```/n/nTo fix this error, please verify you didn't misspell the type name, you did/ndeclare it or imported it into the scope. Examples:/n/n```/nstruct Something;/n/nimpl Something {} // ok!/n/n// or:/n/ntrait Foo {/n type N;/n/n fn bar(_: Self::N); // ok!/n}/n/n// or:/n/nfn foo(x: T) {} // ok!/n```/n/nAnother case that causes this error is when a type is imported into a parent/nmodule. To fix this, you can follow the suggestion and use File directly or/n`use super::File;` which will import the types from the parent namespace. An/nexample that causes this error is below:/n/n```compile_fail,E0412/nuse std::fs::File;/n/nmod foo {/n fn some_function(f: File) {}/n}/n```/n/n```/nuse std::fs::File;/n/nmod foo {/n // either/n use super::File;/n // or/n // use std::fs::File;/n fn foo(f: File) {}/n}/n# fn main() {} // don't insert it for us; that'll break imports/n```/n"},"level":"error","spans":[{"file_name":"$DIR/use_suggestion_json.rs","byte_start":862,"byte_end":866,"line_start":20,"line_end":20,"column_start":12,"column_end":16,"is_primary":true,"text":[{"text":" let x: Iter;","highlight_start":12,"highlight_end":16}],"label":"not found in this scope","suggested_replacement":null,"expansion":null}],"children":[{"message":"possible candidates are found in other modules, you can import them into scope","code":null,"level":"help","spans":[{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::collections::binary_heap::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::collections::btree_map::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::collections::btree_set::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::collections::hash_map::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::collections::hash_set::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::collections::linked_list::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::collections::vec_deque::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::option::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::path::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::result::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::slice::Iter;/n/n","expansion":null},{"file_name":"$DIR/use_suggestion_json.rs","byte_start":839,"byte_end":839,"line_start":19,"line_end":19,"column_start":1,"column_end":1,"is_primary":true,"text":[{"text":"fn main() {","highlight_start":1,"highlight_end":1}],"label":null,"suggested_replacement":"use std::sync::mpsc::Iter;/n/n","expansion":null}],"children":[],"rendered":null}],"rendered":null} {"message":"aborting due to previous error","code":null,"level":"error","spans":[],"children":[],"rendered":null} From 014100df49a9f6926a52ecd4576b99e11a42033b Mon Sep 17 00:00:00 2001 From: Oliver Schneider Date: Wed, 25 Oct 2017 08:33:02 +0200 Subject: [PATCH 3/3] Compiletest should parse suggestions from the spans --- src/test/compile-fail/issue-27842.rs | 2 +- src/tools/compiletest/src/json.rs | 19 ++++++++++--------- 2 files changed, 11 insertions(+), 10 deletions(-) diff --git a/src/test/compile-fail/issue-27842.rs b/src/test/compile-fail/issue-27842.rs index 8c71761df2fb8..eb28e36dc076e 100644 --- a/src/test/compile-fail/issue-27842.rs +++ b/src/test/compile-fail/issue-27842.rs @@ -14,7 +14,7 @@ fn main() { let _ = tup[0]; //~^ ERROR cannot index into a value of type //~| HELP to access tuple elements, use - //~| SUGGESTION let _ = tup.0 + //~| SUGGESTION tup.0 // the case where we show just a general hint let i = 0_usize; diff --git a/src/tools/compiletest/src/json.rs b/src/tools/compiletest/src/json.rs index 77ee93c30078b..8e9cd1a12faac 100644 --- a/src/tools/compiletest/src/json.rs +++ b/src/tools/compiletest/src/json.rs @@ -36,6 +36,7 @@ struct DiagnosticSpan { column_end: usize, is_primary: bool, label: Option, + suggested_replacement: Option, expansion: Option>, } @@ -164,15 +165,15 @@ fn push_expected_errors(expected_errors: &mut Vec, } // If the message has a suggestion, register that. - if let Some(ref rendered) = diagnostic.rendered { - let start_line = primary_spans.iter().map(|s| s.line_start).min().expect("\ - every suggestion should have at least one span"); - for (index, line) in rendered.lines().enumerate() { - expected_errors.push(Error { - line_num: start_line + index, - kind: Some(ErrorKind::Suggestion), - msg: line.to_string(), - }); + for span in primary_spans { + if let Some(ref suggested_replacement) = span.suggested_replacement { + for (index, line) in suggested_replacement.lines().enumerate() { + expected_errors.push(Error { + line_num: span.line_start + index, + kind: Some(ErrorKind::Suggestion), + msg: line.to_string(), + }); + } } }