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languages: Fix indentation for if/else statements in C/C++ without braces (#41670)

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Closes #41179

Release Notes:

- Fixed indentation for if/else statements in C/C++ without braces
This commit is contained in:
Mayank Verma
2025-11-17 10:05:54 +01:00
committed by GitHub
parent b463266fa1
commit d32934a893
6 changed files with 477 additions and 14 deletions
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crates/languages/src/cpp.rs
+254
View File
@@ -0,0 +1,254 @@
#[cfg(test)]
mod tests {
use gpui::{AppContext as _, BorrowAppContext, TestAppContext};
use language::{AutoindentMode, Buffer};
use settings::SettingsStore;
use std::num::NonZeroU32;
use unindent::Unindent;
#[gpui::test]
async fn test_cpp_autoindent_basic(cx: &mut TestAppContext) {
cx.update(|cx| {
let test_settings = SettingsStore::test(cx);
cx.set_global(test_settings);
language::init(cx);
cx.update_global::<SettingsStore, _>(|store, cx| {
store.update_user_settings(cx, |s| {
s.project.all_languages.defaults.tab_size = NonZeroU32::new(2);
});
});
});
let language = crate::language("cpp", tree_sitter_cpp::LANGUAGE.into());
cx.new(|cx| {
let mut buffer = Buffer::local("", cx).with_language(language, cx);
buffer.edit([(0..0, "int main() {}")], None, cx);
let ix = buffer.len() - 1;
buffer.edit([(ix..ix, "\n\n")], Some(AutoindentMode::EachLine), cx);
assert_eq!(
buffer.text(),
"int main() {\n \n}",
"content inside braces should be indented"
);
buffer
});
}
#[gpui::test]
async fn test_cpp_autoindent_if_else(cx: &mut TestAppContext) {
cx.update(|cx| {
let test_settings = SettingsStore::test(cx);
cx.set_global(test_settings);
language::init(cx);
cx.update_global::<SettingsStore, _>(|store, cx| {
store.update_user_settings(cx, |s| {
s.project.all_languages.defaults.tab_size = NonZeroU32::new(2);
});
});
});
let language = crate::language("cpp", tree_sitter_cpp::LANGUAGE.into());
cx.new(|cx| {
let mut buffer = Buffer::local("", cx).with_language(language, cx);
buffer.edit(
[(
0..0,
r#"
int main() {
if (a)
b;
}
"#
.unindent(),
)],
Some(AutoindentMode::EachLine),
cx,
);
assert_eq!(
buffer.text(),
r#"
int main() {
if (a)
b;
}
"#
.unindent(),
"body of if-statement without braces should be indented"
);
let ix = buffer.len() - 4;
buffer.edit([(ix..ix, "\n.c")], Some(AutoindentMode::EachLine), cx);
assert_eq!(
buffer.text(),
r#"
int main() {
if (a)
b
.c;
}
"#
.unindent(),
"field expression (.c) should be indented further than the statement body"
);
buffer.edit([(0..buffer.len(), "")], Some(AutoindentMode::EachLine), cx);
buffer.edit(
[(
0..0,
r#"
int main() {
if (a) a++;
else b++;
}
"#
.unindent(),
)],
Some(AutoindentMode::EachLine),
cx,
);
assert_eq!(
buffer.text(),
r#"
int main() {
if (a) a++;
else b++;
}
"#
.unindent(),
"single-line if/else without braces should align at the same level"
);
buffer.edit([(0..buffer.len(), "")], Some(AutoindentMode::EachLine), cx);
buffer.edit(
[(
0..0,
r#"
int main() {
if (a)
b++;
else
c++;
}
"#
.unindent(),
)],
Some(AutoindentMode::EachLine),
cx,
);
assert_eq!(
buffer.text(),
r#"
int main() {
if (a)
b++;
else
c++;
}
"#
.unindent(),
"multi-line if/else without braces should indent statement bodies"
);
buffer.edit([(0..buffer.len(), "")], Some(AutoindentMode::EachLine), cx);
buffer.edit(
[(
0..0,
r#"
int main() {
if (a)
if (b)
c++;
}
"#
.unindent(),
)],
Some(AutoindentMode::EachLine),
cx,
);
assert_eq!(
buffer.text(),
r#"
int main() {
if (a)
if (b)
c++;
}
"#
.unindent(),
"nested if statements without braces should indent properly"
);
buffer.edit([(0..buffer.len(), "")], Some(AutoindentMode::EachLine), cx);
buffer.edit(
[(
0..0,
r#"
int main() {
if (a)
b++;
else if (c)
d++;
else
f++;
}
"#
.unindent(),
)],
Some(AutoindentMode::EachLine),
cx,
);
assert_eq!(
buffer.text(),
r#"
int main() {
if (a)
b++;
else if (c)
d++;
else
f++;
}
"#
.unindent(),
"else-if chains should align all conditions at same level with indented bodies"
);
buffer.edit([(0..buffer.len(), "")], Some(AutoindentMode::EachLine), cx);
buffer.edit(
[(
0..0,
r#"
int main() {
if (a) {
b++;
} else
c++;
}
"#
.unindent(),
)],
Some(AutoindentMode::EachLine),
cx,
);
assert_eq!(
buffer.text(),
r#"
int main() {
if (a) {
b++;
} else
c++;
}
"#
.unindent(),
"mixed braces should indent properly"
);
buffer
});
}
}