Merging upstream version 1.72.1+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

6 files changed, 150 insertions, 0 deletions

diff --git a/src/tools/rustfmt/tests/source/configs/single_line_let_else_max_width/100.rs b/src/tools/rustfmt/tests/source/configs/single_line_let_else_max_width/100.rs
new file mode 100644
index 000000000..a73c9084b
--- /dev/null
+++ b/src/tools/rustfmt/tests/source/configs/single_line_let_else_max_width/100.rs
@@ -0,0 +1,40 @@
+// rustfmt-single_line_let_else_max_width: 100
+
+fn main() {
+    let Some(a) = opt else {};
+
+    let Some(b) = opt else { return };
+
+    let Some(c) = opt else {
+        return
+    };
+
+    let Some(c) = opt else {
+        // a comment should always force the block to be multi-lined
+        return
+    };
+
+    let Some(c) = opt else { /* a comment should always force the block to be multi-lined */ return };
+
+    let Some(d) = some_very_very_very_very_long_name else { return };
+
+    let Expr::Slice(ast::ExprSlice { lower, upper, step, range: _ }) = slice.as_ref() else {
+        return
+    };
+
+    let Some((base_place, current)) = self.lower_expr_as_place(current, *base, true)? else {
+        return Ok(None)
+    };
+
+    let Some(doc_attr) = variant.attrs.iter().find(|attr| attr.path().is_ident("doc")) else {
+        return Err(Error::new(variant.span(), r#"expected a doc comment"#))
+    };
+
+    let Some((base_place, current)) = self.lower_expr_as_place(current, *base, true) else {
+        return Ok(None)
+    };
+
+    let Stmt::Expr(Expr::Call(ExprCall { args: some_args, .. }), _) = last_stmt else {
+        return Err(Error::new(last_stmt.span(), "expected last expression to be `Some(match (..) { .. })`"))
+    };
+}
diff --git a/src/tools/rustfmt/tests/source/configs/single_line_let_else_max_width/50.rs b/src/tools/rustfmt/tests/source/configs/single_line_let_else_max_width/50.rs
new file mode 100644
index 000000000..87d0583c5
--- /dev/null
+++ b/src/tools/rustfmt/tests/source/configs/single_line_let_else_max_width/50.rs
@@ -0,0 +1,40 @@
+// rustfmt-single_line_let_else_max_width: 50
+
+fn main() {
+    let Some(a) = opt else {};
+
+    let Some(b) = opt else { return };
+
+    let Some(c) = opt else {
+        return
+    };
+
+    let Some(c) = opt else {
+        // a comment should always force the block to be multi-lined
+        return
+    };
+
+    let Some(c) = opt else { /* a comment should always force the block to be multi-lined */ return };
+
+    let Some(d) = some_very_very_very_very_long_name else { return };
+
+    let Expr::Slice(ast::ExprSlice { lower, upper, step, range: _ }) = slice.as_ref() else {
+        return
+    };
+
+    let Some((base_place, current)) = self.lower_expr_as_place(current, *base, true)? else {
+        return Ok(None)
+    };
+
+    let Some(doc_attr) = variant.attrs.iter().find(|attr| attr.path().is_ident("doc")) else {
+        return Err(Error::new(variant.span(), r#"expected a doc comment"#))
+    };
+
+    let Some((base_place, current)) = self.lower_expr_as_place(current, *base, true) else {
+        return Ok(None)
+    };
+
+    let Stmt::Expr(Expr::Call(ExprCall { args: some_args, .. }), _) = last_stmt else {
+        return Err(Error::new(last_stmt.span(), "expected last expression to be `Some(match (..) { .. })`"))
+    };
+}
diff --git a/src/tools/rustfmt/tests/source/configs/single_line_let_else_max_width/zero.rs b/src/tools/rustfmt/tests/source/configs/single_line_let_else_max_width/zero.rs
new file mode 100644
index 000000000..afb9e5033
--- /dev/null
+++ b/src/tools/rustfmt/tests/source/configs/single_line_let_else_max_width/zero.rs
@@ -0,0 +1,40 @@
+// rustfmt-single_line_let_else_max_width: 0
+
+fn main() {
+    let Some(a) = opt else {};
+
+    let Some(b) = opt else { return };
+
+    let Some(c) = opt else {
+        return
+    };
+
+    let Some(c) = opt else {
+        // a comment should always force the block to be multi-lined
+        return
+    };
+
+    let Some(c) = opt else { /* a comment should always force the block to be multi-lined */ return };
+
+    let Some(d) = some_very_very_very_very_long_name else { return };
+
+    let Expr::Slice(ast::ExprSlice { lower, upper, step, range: _ }) = slice.as_ref() else {
+        return
+    };
+
+    let Some((base_place, current)) = self.lower_expr_as_place(current, *base, true)? else {
+        return Ok(None)
+    };
+
+    let Some(doc_attr) = variant.attrs.iter().find(|attr| attr.path().is_ident("doc")) else {
+        return Err(Error::new(variant.span(), r#"expected a doc comment"#))
+    };
+
+    let Some((base_place, current)) = self.lower_expr_as_place(current, *base, true) else {
+        return Ok(None)
+    };
+
+    let Stmt::Expr(Expr::Call(ExprCall { args: some_args, .. }), _) = last_stmt else {
+        return Err(Error::new(last_stmt.span(), "expected last expression to be `Some(match (..) { .. })`"))
+    };
+}
diff --git a/src/tools/rustfmt/tests/source/configs/use_small_heuristics/default.rs b/src/tools/rustfmt/tests/source/configs/use_small_heuristics/default.rs
index 68bc40271..95238c548 100644
--- a/src/tools/rustfmt/tests/source/configs/use_small_heuristics/default.rs
+++ b/src/tools/rustfmt/tests/source/configs/use_small_heuristics/default.rs
@@ -23,3 +23,13 @@ fn main() {
         sit
     };
 }
+
+fn format_let_else() {
+    let Some(a) = opt else {};
+
+    let Some(b) = opt else { return };
+
+    let Some(c) = opt else { return };
+
+    let Some(d) = some_very_very_very_very_long_name else { return };
+}
diff --git a/src/tools/rustfmt/tests/source/configs/use_small_heuristics/max.rs b/src/tools/rustfmt/tests/source/configs/use_small_heuristics/max.rs
index 8d30932e2..b79302e22 100644
--- a/src/tools/rustfmt/tests/source/configs/use_small_heuristics/max.rs
+++ b/src/tools/rustfmt/tests/source/configs/use_small_heuristics/max.rs
@@ -23,3 +23,13 @@ fn main() {
         sit
     };
 }
+
+fn format_let_else() {
+    let Some(a) = opt else {};
+
+    let Some(b) = opt else { return };
+
+    let Some(c) = opt else { return };
+
+    let Some(d) = some_very_very_very_very_long_name else { return };
+}
diff --git a/src/tools/rustfmt/tests/source/configs/use_small_heuristics/off.rs b/src/tools/rustfmt/tests/source/configs/use_small_heuristics/off.rs
index f76392d24..80bcdd898 100644
--- a/src/tools/rustfmt/tests/source/configs/use_small_heuristics/off.rs
+++ b/src/tools/rustfmt/tests/source/configs/use_small_heuristics/off.rs
@@ -23,3 +23,13 @@ fn main() {
         sit
     };
 }
+
+fn format_let_else() {
+    let Some(a) = opt else {};
+
+    let Some(b) = opt else { return };
+
+    let Some(c) = opt else { return };
+
+    let Some(d) = some_very_very_very_very_long_name else { return };
+}