From 949a6ec469507db5e79578da94e17cb63cb54d19 Mon Sep 17 00:00:00 2001 From: Aleksey Kladov Date: Sun, 13 Jun 2021 20:19:11 +0300 Subject: internal: refactor missing or or some diagnostic --- crates/ide/src/diagnostics.rs | 5 +- crates/ide/src/diagnostics/fixes.rs | 1 - crates/ide/src/diagnostics/fixes/wrap_tail_expr.rs | 211 ------------------- .../diagnostics/missing_ok_or_some_in_tail_expr.rs | 230 +++++++++++++++++++++ 4 files changed, 232 insertions(+), 215 deletions(-) delete mode 100644 crates/ide/src/diagnostics/fixes/wrap_tail_expr.rs create mode 100644 crates/ide/src/diagnostics/missing_ok_or_some_in_tail_expr.rs (limited to 'crates/ide/src') diff --git a/crates/ide/src/diagnostics.rs b/crates/ide/src/diagnostics.rs index 3ced08f30..af282db0c 100644 --- a/crates/ide/src/diagnostics.rs +++ b/crates/ide/src/diagnostics.rs @@ -9,6 +9,7 @@ mod inactive_code; mod macro_error; mod mismatched_arg_count; mod missing_fields; +mod missing_ok_or_some_in_tail_expr; mod missing_unsafe; mod no_such_field; mod remove_this_semicolon; @@ -163,9 +164,6 @@ pub(crate) fn diagnostics( } let res = RefCell::new(res); let sink_builder = DiagnosticSinkBuilder::new() - .on::(|d| { - res.borrow_mut().push(diagnostic_with_fix(d, &sema, resolve)); - }) .on::(|d| { res.borrow_mut().push(warning_with_fix(d, &sema, resolve)); }) @@ -223,6 +221,7 @@ pub(crate) fn diagnostics( AnyDiagnostic::MacroError(d) => macro_error::macro_error(&ctx, &d), AnyDiagnostic::MismatchedArgCount(d) => mismatched_arg_count::mismatched_arg_count(&ctx, &d), AnyDiagnostic::MissingFields(d) => missing_fields::missing_fields(&ctx, &d), + AnyDiagnostic::MissingOkOrSomeInTailExpr(d) => missing_ok_or_some_in_tail_expr::missing_ok_or_some_in_tail_expr(&ctx, &d), AnyDiagnostic::MissingUnsafe(d) => missing_unsafe::missing_unsafe(&ctx, &d), AnyDiagnostic::NoSuchField(d) => no_such_field::no_such_field(&ctx, &d), AnyDiagnostic::RemoveThisSemicolon(d) => remove_this_semicolon::remove_this_semicolon(&ctx, &d), diff --git a/crates/ide/src/diagnostics/fixes.rs b/crates/ide/src/diagnostics/fixes.rs index 70f17881e..350575b3a 100644 --- a/crates/ide/src/diagnostics/fixes.rs +++ b/crates/ide/src/diagnostics/fixes.rs @@ -2,7 +2,6 @@ //! The same module also has all curret custom fixes for the diagnostics implemented. mod change_case; mod replace_with_find_map; -mod wrap_tail_expr; use hir::{diagnostics::Diagnostic, Semantics}; use ide_assists::AssistResolveStrategy; diff --git a/crates/ide/src/diagnostics/fixes/wrap_tail_expr.rs b/crates/ide/src/diagnostics/fixes/wrap_tail_expr.rs deleted file mode 100644 index dcb21e037..000000000 --- a/crates/ide/src/diagnostics/fixes/wrap_tail_expr.rs +++ /dev/null @@ -1,211 +0,0 @@ -use hir::{db::AstDatabase, diagnostics::MissingOkOrSomeInTailExpr, Semantics}; -use ide_assists::{Assist, AssistResolveStrategy}; -use ide_db::{source_change::SourceChange, RootDatabase}; -use syntax::AstNode; -use text_edit::TextEdit; - -use crate::diagnostics::{fix, DiagnosticWithFixes}; - -impl DiagnosticWithFixes for MissingOkOrSomeInTailExpr { - fn fixes( - &self, - sema: &Semantics, - _resolve: &AssistResolveStrategy, - ) -> Option> { - let root = sema.db.parse_or_expand(self.file)?; - let tail_expr = self.expr.to_node(&root); - let tail_expr_range = tail_expr.syntax().text_range(); - let replacement = format!("{}({})", self.required, tail_expr.syntax()); - let edit = TextEdit::replace(tail_expr_range, replacement); - let source_change = SourceChange::from_text_edit(self.file.original_file(sema.db), edit); - let name = if self.required == "Ok" { "Wrap with Ok" } else { "Wrap with Some" }; - Some(vec![fix("wrap_tail_expr", name, source_change, tail_expr_range)]) - } -} - -#[cfg(test)] -mod tests { - use crate::diagnostics::tests::{check_diagnostics, check_fix}; - - #[test] - fn test_wrap_return_type_option() { - check_fix( - r#" -//- /main.rs crate:main deps:core -use core::option::Option::{self, Some, None}; - -fn div(x: i32, y: i32) -> Option { - if y == 0 { - return None; - } - x / y$0 -} -//- /core/lib.rs crate:core -pub mod result { - pub enum Result { Ok(T), Err(E) } -} -pub mod option { - pub enum Option { Some(T), None } -} -"#, - r#" -use core::option::Option::{self, Some, None}; - -fn div(x: i32, y: i32) -> Option { - if y == 0 { - return None; - } - Some(x / y) -} -"#, - ); - } - - #[test] - fn test_wrap_return_type() { - check_fix( - r#" -//- /main.rs crate:main deps:core -use core::result::Result::{self, Ok, Err}; - -fn div(x: i32, y: i32) -> Result { - if y == 0 { - return Err(()); - } - x / y$0 -} -//- /core/lib.rs crate:core -pub mod result { - pub enum Result { Ok(T), Err(E) } -} -pub mod option { - pub enum Option { Some(T), None } -} -"#, - r#" -use core::result::Result::{self, Ok, Err}; - -fn div(x: i32, y: i32) -> Result { - if y == 0 { - return Err(()); - } - Ok(x / y) -} -"#, - ); - } - - #[test] - fn test_wrap_return_type_handles_generic_functions() { - check_fix( - r#" -//- /main.rs crate:main deps:core -use core::result::Result::{self, Ok, Err}; - -fn div(x: T) -> Result { - if x == 0 { - return Err(7); - } - $0x -} -//- /core/lib.rs crate:core -pub mod result { - pub enum Result { Ok(T), Err(E) } -} -pub mod option { - pub enum Option { Some(T), None } -} -"#, - r#" -use core::result::Result::{self, Ok, Err}; - -fn div(x: T) -> Result { - if x == 0 { - return Err(7); - } - Ok(x) -} -"#, - ); - } - - #[test] - fn test_wrap_return_type_handles_type_aliases() { - check_fix( - r#" -//- /main.rs crate:main deps:core -use core::result::Result::{self, Ok, Err}; - -type MyResult = Result; - -fn div(x: i32, y: i32) -> MyResult { - if y == 0 { - return Err(()); - } - x $0/ y -} -//- /core/lib.rs crate:core -pub mod result { - pub enum Result { Ok(T), Err(E) } -} -pub mod option { - pub enum Option { Some(T), None } -} -"#, - r#" -use core::result::Result::{self, Ok, Err}; - -type MyResult = Result; - -fn div(x: i32, y: i32) -> MyResult { - if y == 0 { - return Err(()); - } - Ok(x / y) -} -"#, - ); - } - - #[test] - fn test_wrap_return_type_not_applicable_when_expr_type_does_not_match_ok_type() { - check_diagnostics( - r#" -//- /main.rs crate:main deps:core -use core::result::Result::{self, Ok, Err}; - -fn foo() -> Result<(), i32> { 0 } - -//- /core/lib.rs crate:core -pub mod result { - pub enum Result { Ok(T), Err(E) } -} -pub mod option { - pub enum Option { Some(T), None } -} -"#, - ); - } - - #[test] - fn test_wrap_return_type_not_applicable_when_return_type_is_not_result_or_option() { - check_diagnostics( - r#" -//- /main.rs crate:main deps:core -use core::result::Result::{self, Ok, Err}; - -enum SomeOtherEnum { Ok(i32), Err(String) } - -fn foo() -> SomeOtherEnum { 0 } - -//- /core/lib.rs crate:core -pub mod result { - pub enum Result { Ok(T), Err(E) } -} -pub mod option { - pub enum Option { Some(T), None } -} -"#, - ); - } -} diff --git a/crates/ide/src/diagnostics/missing_ok_or_some_in_tail_expr.rs b/crates/ide/src/diagnostics/missing_ok_or_some_in_tail_expr.rs new file mode 100644 index 000000000..e27b54e66 --- /dev/null +++ b/crates/ide/src/diagnostics/missing_ok_or_some_in_tail_expr.rs @@ -0,0 +1,230 @@ +use hir::{db::AstDatabase, Semantics}; +use ide_assists::Assist; +use ide_db::source_change::SourceChange; +use syntax::AstNode; +use text_edit::TextEdit; + +use crate::diagnostics::{fix, Diagnostic, DiagnosticsContext}; + +// Diagnostic: missing-ok-or-some-in-tail-expr +// +// This diagnostic is triggered if a block that should return `Result` returns a value not wrapped in `Ok`, +// or if a block that should return `Option` returns a value not wrapped in `Some`. +// +// Example: +// +// ```rust +// fn foo() -> Result { +// 10 +// } +// ``` +pub(super) fn missing_ok_or_some_in_tail_expr( + ctx: &DiagnosticsContext<'_>, + d: &hir::MissingOkOrSomeInTailExpr, +) -> Diagnostic { + Diagnostic::new( + "missing-ok-or-some-in-tail-expr", + format!("wrap return expression in {}", d.required), + ctx.sema.diagnostics_display_range(d.expr.clone().map(|it| it.into())).range, + ) + .with_fixes(fixes(ctx, d)) +} + +fn fixes(ctx: &DiagnosticsContext<'_>, d: &hir::MissingOkOrSomeInTailExpr) -> Option> { + let root = ctx.sema.db.parse_or_expand(d.expr.file_id)?; + let tail_expr = d.expr.value.to_node(&root); + let tail_expr_range = tail_expr.syntax().text_range(); + let replacement = format!("{}({})", d.required, tail_expr.syntax()); + let edit = TextEdit::replace(tail_expr_range, replacement); + let source_change = + SourceChange::from_text_edit(d.expr.file_id.original_file(ctx.sema.db), edit); + let name = if d.required == "Ok" { "Wrap with Ok" } else { "Wrap with Some" }; + Some(vec![fix("wrap_tail_expr", name, source_change, tail_expr_range)]) +} + +#[cfg(test)] +mod tests { + use crate::diagnostics::tests::{check_diagnostics, check_fix}; + + #[test] + fn test_wrap_return_type_option() { + check_fix( + r#" +//- /main.rs crate:main deps:core +use core::option::Option::{self, Some, None}; + +fn div(x: i32, y: i32) -> Option { + if y == 0 { + return None; + } + x / y$0 +} +//- /core/lib.rs crate:core +pub mod result { + pub enum Result { Ok(T), Err(E) } +} +pub mod option { + pub enum Option { Some(T), None } +} +"#, + r#" +use core::option::Option::{self, Some, None}; + +fn div(x: i32, y: i32) -> Option { + if y == 0 { + return None; + } + Some(x / y) +} +"#, + ); + } + + #[test] + fn test_wrap_return_type() { + check_fix( + r#" +//- /main.rs crate:main deps:core +use core::result::Result::{self, Ok, Err}; + +fn div(x: i32, y: i32) -> Result { + if y == 0 { + return Err(()); + } + x / y$0 +} +//- /core/lib.rs crate:core +pub mod result { + pub enum Result { Ok(T), Err(E) } +} +pub mod option { + pub enum Option { Some(T), None } +} +"#, + r#" +use core::result::Result::{self, Ok, Err}; + +fn div(x: i32, y: i32) -> Result { + if y == 0 { + return Err(()); + } + Ok(x / y) +} +"#, + ); + } + + #[test] + fn test_wrap_return_type_handles_generic_functions() { + check_fix( + r#" +//- /main.rs crate:main deps:core +use core::result::Result::{self, Ok, Err}; + +fn div(x: T) -> Result { + if x == 0 { + return Err(7); + } + $0x +} +//- /core/lib.rs crate:core +pub mod result { + pub enum Result { Ok(T), Err(E) } +} +pub mod option { + pub enum Option { Some(T), None } +} +"#, + r#" +use core::result::Result::{self, Ok, Err}; + +fn div(x: T) -> Result { + if x == 0 { + return Err(7); + } + Ok(x) +} +"#, + ); + } + + #[test] + fn test_wrap_return_type_handles_type_aliases() { + check_fix( + r#" +//- /main.rs crate:main deps:core +use core::result::Result::{self, Ok, Err}; + +type MyResult = Result; + +fn div(x: i32, y: i32) -> MyResult { + if y == 0 { + return Err(()); + } + x $0/ y +} +//- /core/lib.rs crate:core +pub mod result { + pub enum Result { Ok(T), Err(E) } +} +pub mod option { + pub enum Option { Some(T), None } +} +"#, + r#" +use core::result::Result::{self, Ok, Err}; + +type MyResult = Result; + +fn div(x: i32, y: i32) -> MyResult { + if y == 0 { + return Err(()); + } + Ok(x / y) +} +"#, + ); + } + + #[test] + fn test_wrap_return_type_not_applicable_when_expr_type_does_not_match_ok_type() { + check_diagnostics( + r#" +//- /main.rs crate:main deps:core +use core::result::Result::{self, Ok, Err}; + +fn foo() -> Result<(), i32> { 0 } + +//- /core/lib.rs crate:core +pub mod result { + pub enum Result { Ok(T), Err(E) } +} +pub mod option { + pub enum Option { Some(T), None } +} +"#, + ); + } + + #[test] + fn test_wrap_return_type_not_applicable_when_return_type_is_not_result_or_option() { + check_diagnostics( + r#" +//- /main.rs crate:main deps:core +use core::result::Result::{self, Ok, Err}; + +enum SomeOtherEnum { Ok(i32), Err(String) } + +fn foo() -> SomeOtherEnum { 0 } + +//- /core/lib.rs crate:core +pub mod result { + pub enum Result { Ok(T), Err(E) } +} +pub mod option { + pub enum Option { Some(T), None } +} +"#, + ); + } +} -- cgit v1.2.3