Fix suggestions span for when expr is from macro expansions
This commit is contained in:
许杰友 Jieyou Xu (Joe)
parent
08fd6f719e
commit
25d065b2d4
@ -982,17 +982,22 @@ pub(in super::super) fn suggest_missing_break_or_return_expr(
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};
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let ty = self.normalize(expr.span, ty);
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if self.can_coerce(found, ty) {
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if let Some(node) = self.tcx.hir().find(fn_id)
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&& let Some(owner_node) = node.as_owner()
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&& let Some(span) = expr.span.find_ancestor_inside(owner_node.span())
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{
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err.multipart_suggestion(
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"you might have meant to return this value",
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vec![
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(expr.span.shrink_to_lo(), "return ".to_string()),
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(expr.span.shrink_to_hi(), ";".to_string()),
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(span.shrink_to_lo(), "return ".to_string()),
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(span.shrink_to_hi(), ";".to_string()),
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],
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Applicability::MaybeIncorrect,
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);
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}
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}
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}
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}
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pub(in super::super) fn suggest_missing_parentheses(
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&self,
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@ -1177,10 +1182,16 @@ pub(crate) fn suggest_into(
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),
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))
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{
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let mut span = expr.span;
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while expr.span.eq_ctxt(span) && let Some(parent_callsite) = span.parent_callsite()
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{
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span = parent_callsite;
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}
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let sugg = if expr.precedence().order() >= PREC_POSTFIX {
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vec![(expr.span.shrink_to_hi(), ".into()".to_owned())]
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vec![(span.shrink_to_hi(), ".into()".to_owned())]
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} else {
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vec![(expr.span.shrink_to_lo(), "(".to_owned()), (expr.span.shrink_to_hi(), ").into()".to_owned())]
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vec![(span.shrink_to_lo(), "(".to_owned()), (span.shrink_to_hi(), ").into()".to_owned())]
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};
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diag.multipart_suggestion(
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format!("call `Into::into` on this expression to convert `{expr_ty}` into `{expected_ty}`"),
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@ -0,0 +1,55 @@
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// run-rustfix
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#![allow(dead_code)]
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pub fn foo(x: &str) -> Result<(), Box<dyn std::error::Error>> {
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Err(format!("error: {x}").into())
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//~^ ERROR mismatched types
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}
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macro_rules! outer {
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($x: expr) => {
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inner!($x)
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}
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}
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macro_rules! inner {
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($x: expr) => {
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format!("error: {}", $x).into()
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//~^ ERROR mismatched types
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}
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}
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fn bar(x: &str) -> Result<(), Box<dyn std::error::Error>> {
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Err(outer!(x))
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}
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macro_rules! entire_fn_outer {
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() => {
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entire_fn!();
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}
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}
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macro_rules! entire_fn {
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() => {
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pub fn baz(x: &str) -> Result<(), Box<dyn std::error::Error>> {
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Err(format!("error: {x}").into())
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//~^ ERROR mismatched types
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}
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}
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}
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entire_fn_outer!();
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macro_rules! nontrivial {
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($x: expr) => {
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Err(format!("error: {}", $x).into())
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//~^ ERROR mismatched types
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}
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}
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pub fn qux(x: &str) -> Result<(), Box<dyn std::error::Error>> {
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nontrivial!(x)
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}
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fn main() {}
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@ -0,0 +1,55 @@
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// run-rustfix
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#![allow(dead_code)]
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pub fn foo(x: &str) -> Result<(), Box<dyn std::error::Error>> {
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Err(format!("error: {x}"))
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//~^ ERROR mismatched types
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}
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macro_rules! outer {
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($x: expr) => {
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inner!($x)
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}
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}
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macro_rules! inner {
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($x: expr) => {
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format!("error: {}", $x)
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//~^ ERROR mismatched types
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}
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}
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fn bar(x: &str) -> Result<(), Box<dyn std::error::Error>> {
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Err(outer!(x))
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}
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macro_rules! entire_fn_outer {
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() => {
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entire_fn!();
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}
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}
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macro_rules! entire_fn {
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() => {
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pub fn baz(x: &str) -> Result<(), Box<dyn std::error::Error>> {
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Err(format!("error: {x}"))
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//~^ ERROR mismatched types
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}
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}
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}
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entire_fn_outer!();
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macro_rules! nontrivial {
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($x: expr) => {
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Err(format!("error: {}", $x))
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//~^ ERROR mismatched types
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}
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}
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pub fn qux(x: &str) -> Result<(), Box<dyn std::error::Error>> {
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nontrivial!(x)
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}
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fn main() {}
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@ -0,0 +1,59 @@
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error[E0308]: mismatched types
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--> $DIR/issue-110017-format-into-help-deletes-macro.rs:5:10
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LL | Err(format!("error: {x}"))
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| ^^^^^^^^^^^^^^^^^^^^^ expected `Box<dyn Error>`, found `String`
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= note: expected struct `Box<dyn std::error::Error>`
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found struct `String`
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= note: this error originates in the macro `format` (in Nightly builds, run with -Z macro-backtrace for more info)
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help: call `Into::into` on this expression to convert `String` into `Box<dyn std::error::Error>`
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LL | Err(format!("error: {x}").into())
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| +++++++
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error[E0308]: mismatched types
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--> $DIR/issue-110017-format-into-help-deletes-macro.rs:23:10
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LL | Err(outer!(x))
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| ^^^^^^^^^ expected `Box<dyn Error>`, found `String`
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= note: expected struct `Box<dyn std::error::Error>`
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found struct `String`
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= note: this error originates in the macro `format` which comes from the expansion of the macro `outer` (in Nightly builds, run with -Z macro-backtrace for more info)
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help: call `Into::into` on this expression to convert `String` into `Box<dyn std::error::Error>`
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LL | format!("error: {}", $x).into()
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| +++++++
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error[E0308]: mismatched types
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--> $DIR/issue-110017-format-into-help-deletes-macro.rs:41:2
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LL | entire_fn_outer!();
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| ^^^^^^^^^^^^^^^^^^ expected `Box<dyn Error>`, found `String`
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= note: expected struct `Box<dyn std::error::Error>`
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found struct `String`
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= note: this error originates in the macro `format` which comes from the expansion of the macro `entire_fn_outer` (in Nightly builds, run with -Z macro-backtrace for more info)
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help: call `Into::into` on this expression to convert `String` into `Box<dyn std::error::Error>`
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LL | Err(format!("error: {x}").into())
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| +++++++
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error[E0308]: mismatched types
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--> $DIR/issue-110017-format-into-help-deletes-macro.rs:51:5
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LL | nontrivial!(x)
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| ^^^^^^^^^^^^^^ expected `Box<dyn Error>`, found `String`
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= note: expected struct `Box<dyn std::error::Error>`
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found struct `String`
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= note: this error originates in the macro `format` which comes from the expansion of the macro `nontrivial` (in Nightly builds, run with -Z macro-backtrace for more info)
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help: call `Into::into` on this expression to convert `String` into `Box<dyn std::error::Error>`
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LL | Err(format!("error: {}", $x).into())
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| +++++++
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error: aborting due to 4 previous errors
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For more information about this error, try `rustc --explain E0308`.
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@ -0,0 +1,37 @@
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// run-rustfix
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#![allow(dead_code)]
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// https://github.com/rust-lang/rust/issues/112007
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fn bug_report<W: std::fmt::Write>(w: &mut W) -> std::fmt::Result {
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if true {
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writeln!(w, "`;?` here ->")?;
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} else {
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return writeln!(w, "but not here");
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//~^ ERROR mismatched types
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};
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Ok(())
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}
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macro_rules! baz {
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($w: expr) => {
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bar!($w)
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}
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}
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macro_rules! bar {
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($w: expr) => {
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writeln!($w, "but not here")
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//~^ ERROR mismatched types
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}
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}
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fn foo<W: std::fmt::Write>(w: &mut W) -> std::fmt::Result {
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if true {
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writeln!(w, "`;?` here ->")?;
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} else {
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return baz!(w);
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};
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Ok(())
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}
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fn main() {}
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@ -0,0 +1,37 @@
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// run-rustfix
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#![allow(dead_code)]
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// https://github.com/rust-lang/rust/issues/112007
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fn bug_report<W: std::fmt::Write>(w: &mut W) -> std::fmt::Result {
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if true {
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writeln!(w, "`;?` here ->")?;
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} else {
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writeln!(w, "but not here")
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//~^ ERROR mismatched types
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}
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Ok(())
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}
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macro_rules! baz {
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($w: expr) => {
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bar!($w)
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}
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}
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macro_rules! bar {
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($w: expr) => {
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writeln!($w, "but not here")
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//~^ ERROR mismatched types
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}
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}
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fn foo<W: std::fmt::Write>(w: &mut W) -> std::fmt::Result {
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if true {
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writeln!(w, "`;?` here ->")?;
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} else {
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baz!(w)
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}
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Ok(())
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}
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fn main() {}
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@ -0,0 +1,50 @@
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error[E0308]: mismatched types
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--> $DIR/issue-112007-leaked-writeln-macro-internals.rs:9:9
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LL | / if true {
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LL | | writeln!(w, "`;?` here ->")?;
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LL | | } else {
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LL | | writeln!(w, "but not here")
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| | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `()`, found `Result<(), Error>`
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LL | |
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LL | | }
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| |_____- expected this to be `()`
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= note: expected unit type `()`
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found enum `Result<(), std::fmt::Error>`
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= note: this error originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
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help: consider using a semicolon here
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LL | };
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| +
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help: you might have meant to return this value
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LL | return writeln!(w, "but not here");
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| ++++++ +
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error[E0308]: mismatched types
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--> $DIR/issue-112007-leaked-writeln-macro-internals.rs:32:9
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LL | / if true {
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LL | | writeln!(w, "`;?` here ->")?;
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LL | | } else {
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LL | | baz!(w)
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| | ^^^^^^^ expected `()`, found `Result<(), Error>`
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LL | | }
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| |_____- expected this to be `()`
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= note: expected unit type `()`
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found enum `Result<(), std::fmt::Error>`
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= note: this error originates in the macro `writeln` which comes from the expansion of the macro `baz` (in Nightly builds, run with -Z macro-backtrace for more info)
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help: consider using a semicolon here
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LL | };
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| +
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help: you might have meant to return this value
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LL | return baz!(w);
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| ++++++ +
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error: aborting due to 2 previous errors
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For more information about this error, try `rustc --explain E0308`.
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