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Fix syntax highlighting of recursive macros

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Add syntax highlighting for the BANG (`!`) token if the parent is `MACRO_CALL`.
This commit is contained in:
Leander Tentrup 2020-06-14 15:40:06 +02:00
parent 017331a53c
commit 06f89e5f3a
3 changed files with 37 additions and 16 deletions
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37
crates/ra_ide/src/syntax_highlighting.rs
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@ -160,23 +160,25 @@ pub(crate) fn highlight(
// Check if macro takes a format string and remember it for highlighting later.
// The macros that accept a format string expand to a compiler builtin macros
// `format_args` and `format_args_nl`.
if let Some(fmt_macro_call) = parent.parent().and_then(ast::MacroCall::cast) {
if let Some(name) =
fmt_macro_call.path().and_then(|p| p.segment()).and_then(|s| s.name_ref())
{
match name.text().as_str() {
"format_args" | "format_args_nl" => {
format_string = parent
.children_with_tokens()
.filter(|t| t.kind() != WHITESPACE)
.nth(1)
.filter(|e| {
ast::String::can_cast(e.kind())
|| ast::RawString::can_cast(e.kind())
})
}
_ => {}
if let Some(name) = parent
.parent()
.and_then(ast::MacroCall::cast)
.and_then(|mc| mc.path())
.and_then(|p| p.segment())
.and_then(|s| s.name_ref())
{
match name.text().as_str() {
"format_args" | "format_args_nl" => {
format_string = parent
.children_with_tokens()
.filter(|t| t.kind() != WHITESPACE)
.nth(1)
.filter(|e| {
ast::String::can_cast(e.kind())
|| ast::RawString::can_cast(e.kind())
})
}
_ => {}
}
}
@ -493,6 +495,9 @@ fn highlight_element(
h |= HighlightModifier::Unsafe;
h
}
T![!] if element.parent().and_then(ast::MacroCall::cast).is_some() => {
Highlight::new(HighlightTag::Macro)
}
k if k.is_keyword() => {
let h = Highlight::new(HighlightTag::Keyword);