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internal: Handle macro calls better in highlighting

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This commit is contained in:
Lukas Wirth 2022-01-02 19:10:10 +01:00
parent 367cd5ce9b
commit 3a525c831f
11 changed files with 151 additions and 159 deletions
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151
crates/ide/src/syntax_highlighting.rs
View file

@ -13,11 +13,11 @@ mod html;
mod tests;
use hir::{InFile, Name, Semantics};
use ide_db::{RootDatabase, SymbolKind};
use ide_db::RootDatabase;
use rustc_hash::FxHashMap;
use syntax::{
ast::{self, HasFormatSpecifier},
match_ast, AstNode, AstToken, Direction, NodeOrToken,
AstNode, AstToken, NodeOrToken,
SyntaxKind::*,
SyntaxNode, TextRange, WalkEvent, T,
};
@ -100,7 +100,8 @@ pub struct HlRange {
// colon:: Emitted for the `:` token.
// comma:: Emitted for the `,` token.
// dot:: Emitted for the `.` token.
// Semi:: Emitted for the `;` token.
// semi:: Emitted for the `;` token.
// macroBang:: Emitted for the `!` token in macro calls.
//
// //-
//
@ -209,107 +210,94 @@ fn traverse(
// Walk all nodes, keeping track of whether we are inside a macro or not.
// If in macro, expand it first and highlight the expanded code.
for event in root.value.preorder_with_tokens() {
let event_range = match &event {
let range = match &event {
WalkEvent::Enter(it) | WalkEvent::Leave(it) => it.text_range(),
};
// Element outside of the viewport, no need to highlight
if range_to_highlight.intersect(event_range).is_none() {
if range_to_highlight.intersect(range).is_none() {
continue;
}
// set macro and attribute highlighting states
match event.clone() {
WalkEvent::Enter(NodeOrToken::Node(node)) => {
match_ast! {
match node {
ast::MacroCall(mcall) => {
if let Some(range) = macro_call_range(&mcall) {
hl.add(HlRange {
range,
highlight: HlTag::Symbol(SymbolKind::Macro).into(),
binding_hash: None,
});
}
WalkEvent::Enter(NodeOrToken::Node(node)) => match ast::Item::cast(node.clone()) {
Some(ast::Item::MacroCall(mcall)) => {
current_macro_call = Some(mcall);
continue;
},
ast::Macro(mac) => {
}
Some(ast::Item::MacroRules(mac)) => {
macro_highlighter.init();
current_macro = Some(mac);
current_macro = Some(mac.into());
continue;
}
Some(ast::Item::MacroDef(mac)) => {
macro_highlighter.init();
current_macro = Some(mac.into());
continue;
}
Some(item) if sema.is_attr_macro_call(&item) => current_attr_call = Some(item),
None if ast::Attr::can_cast(node.kind()) => inside_attribute = true,
_ => (),
},
ast::Item(item) => {
if sema.is_attr_macro_call(&item) {
current_attr_call = Some(item);
}
},
ast::Attr(__) => inside_attribute = true,
_ => ()
}
}
}
WalkEvent::Leave(NodeOrToken::Node(node)) => {
match_ast! {
match node {
ast::MacroCall(mcall) => {
WalkEvent::Leave(NodeOrToken::Node(node)) => match ast::Item::cast(node.clone()) {
Some(ast::Item::MacroCall(mcall)) => {
assert_eq!(current_macro_call, Some(mcall));
current_macro_call = None;
},
ast::Macro(mac) => {
assert_eq!(current_macro, Some(mac));
}
Some(ast::Item::MacroRules(mac)) => {
assert_eq!(current_macro, Some(mac.into()));
current_macro = None;
macro_highlighter = MacroHighlighter::default();
}
Some(ast::Item::MacroDef(mac)) => {
assert_eq!(current_macro, Some(mac.into()));
current_macro = None;
macro_highlighter = MacroHighlighter::default();
}
Some(item) if current_attr_call.as_ref().map_or(false, |it| *it == item) => {
current_attr_call = None
}
None if ast::Attr::can_cast(node.kind()) => inside_attribute = false,
_ => (),
},
ast::Item(item) => {
if current_attr_call == Some(item) {
current_attr_call = None;
}
},
ast::Attr(__) => inside_attribute = false,
_ => ()
}
}
}
_ => (),
}
let element = match event {
WalkEvent::Enter(it) => it,
WalkEvent::Leave(it) => {
if let Some(node) = it.as_node() {
inject::doc_comment(hl, sema, root.with_value(node));
}
WalkEvent::Leave(NodeOrToken::Token(_)) => continue,
WalkEvent::Leave(NodeOrToken::Node(node)) => {
inject::doc_comment(hl, sema, root.with_value(&node));
continue;
}
};
let range = element.text_range();
if current_macro.is_some() {
if let Some(tok) = element.as_token() {
macro_highlighter.advance(tok);
}
}
let descend_token = (current_macro_call.is_some() || current_attr_call.is_some())
&& element.kind() != COMMENT;
// only attempt to descend if we are inside a macro call or attribute
// as calling `descend_into_macros_single` gets rather expensive if done for every single token
let descend_token = current_macro_call.is_some() || current_attr_call.is_some();
let element_to_highlight = if descend_token {
// Inside a macro -- expand it first
let token = match element.clone().into_token() {
Some(it) if current_macro_call.is_some() => {
let not_in_tt = it.parent().map_or(true, |it| it.kind() != TOKEN_TREE);
if not_in_tt {
continue;
}
it
}
Some(it) => it,
_ => continue,
let token = match &element {
NodeOrToken::Node(_) => continue,
NodeOrToken::Token(tok) => tok.clone(),
};
let in_mcall_outside_tt = current_macro_call.is_some()
&& token.parent().as_ref().map(SyntaxNode::kind) != Some(TOKEN_TREE);
let token = match in_mcall_outside_tt {
// not in the macros token tree, don't attempt to descend
true => token,
false => sema.descend_into_macros_single(token),
};
let token = sema.descend_into_macros_single(token);
match token.parent() {
Some(parent) => {
// We only care Name and Name_ref
// Names and NameRefs have special semantics, use them instead of the tokens
// as otherwise we won't ever visit them
match (token.kind(), parent.kind()) {
(T![ident], NAME | NAME_REF) => parent.into(),
(T![self] | T![super] | T![crate], NAME_REF) => parent.into(),
@ -323,10 +311,14 @@ fn traverse(
element.clone()
};
if macro_highlighter.highlight(element_to_highlight.clone()).is_some() {
// FIXME: do proper macro def highlighting https://github.com/rust-analyzer/rust-analyzer/issues/6232
// Skip metavariables from being highlighted to prevent keyword highlighting in them
if macro_highlighter.highlight(&element_to_highlight).is_some() {
continue;
}
// string highlight injections, note this does not use the descended element as proc-macros
// can rewrite string literals which invalidates our indices
if let (Some(token), Some(token_to_highlight)) =
(element.into_token(), element_to_highlight.as_token())
{
@ -354,13 +346,15 @@ fn traverse(
}
}
if let Some((mut highlight, binding_hash)) = highlight::element(
// do the normal highlighting
let element = highlight::element(
sema,
krate,
&mut bindings_shadow_count,
syntactic_name_ref_highlighting,
element_to_highlight.clone(),
) {
element_to_highlight,
);
if let Some((mut highlight, binding_hash)) = element {
if inside_attribute {
highlight |= HlMod::Attribute
}
@ -369,18 +363,3 @@ fn traverse(
}
}
}
fn macro_call_range(macro_call: &ast::MacroCall) -> Option<TextRange> {
let path = macro_call.path()?;
let name_ref = path.segment()?.name_ref()?;
let range_start = name_ref.syntax().text_range().start();
let mut range_end = name_ref.syntax().text_range().end();
for sibling in path.syntax().siblings_with_tokens(Direction::Next) {
if let T![!] | T![ident] = sibling.kind() {
range_end = sibling.text_range().end();
}
}
Some(TextRange::new(range_start, range_end))
}

2
crates/ide/src/syntax_highlighting/highlight.rs
View file

@ -81,7 +81,7 @@ fn token(
T![::] | T![->] | T![=>] | T![..] | T![=] | T![@] | T![.] => {
HlOperator::Other.into()
}
T![!] if parent_matches::<ast::MacroCall>(&token) => SymbolKind::Macro.into(),
T![!] if parent_matches::<ast::MacroCall>(&token) => HlPunct::MacroBang.into(),
T![!] if parent_matches::<ast::NeverType>(&token) => HlTag::BuiltinType.into(),
T![!] if parent_matches::<ast::PrefixExpr>(&token) => HlOperator::Logical.into(),
T![*] if parent_matches::<ast::PtrType>(&token) => HlTag::Keyword.into(),

4
crates/ide/src/syntax_highlighting/macro_.rs
View file

@ -19,7 +19,7 @@ impl MacroHighlighter {
}
}
pub(super) fn highlight(&self, element: SyntaxElement) -> Option<HlRange> {
pub(super) fn highlight(&self, element: &SyntaxElement) -> Option<HlRange> {
if let Some(state) = self.state.as_ref() {
if matches!(state.rule_state, RuleState::Matcher | RuleState::Expander) {
if let Some(range) = is_metavariable(element) {
@ -115,7 +115,7 @@ fn update_macro_state(state: &mut MacroMatcherParseState, tok: &SyntaxToken) {
}
}
fn is_metavariable(element: SyntaxElement) -> Option<TextRange> {
fn is_metavariable(element: &SyntaxElement) -> Option<TextRange> {
let tok = element.as_token()?;
match tok.kind() {
kind if kind == SyntaxKind::IDENT || kind.is_keyword() => {

3
crates/ide/src/syntax_highlighting/tags.rs
View file

@ -102,6 +102,8 @@ pub enum HlPunct {
Colon,
/// ;
Semi,
/// ! (only for macro calls)
MacroBang,
///
Other,
}
@ -167,6 +169,7 @@ impl HlTag {
HlPunct::Dot => "dot",
HlPunct::Colon => "colon",
HlPunct::Semi => "semicolon",
HlPunct::MacroBang => "macro_bang",
HlPunct::Other => "punctuation",
},
HlTag::NumericLiteral => "numeric_literal",

6
crates/ide/src/syntax_highlighting/test_data/highlight_doctest.html
View file

@ -89,7 +89,7 @@ pre { color: #DCDCCC; background: #3F3F3F; font-size: 22px; padd
<span class="comment documentation">/// </span><span class="keyword injected">let</span><span class="none injected"> </span><span class="variable declaration injected">foo</span><span class="none injected"> </span><span class="operator injected">=</span><span class="none injected"> </span><span class="struct injected">Foo</span><span class="operator injected">::</span><span class="function injected">new</span><span class="parenthesis injected">(</span><span class="parenthesis injected">)</span><span class="semicolon injected">;</span>
<span class="comment documentation">///</span>
<span class="comment documentation">/// </span><span class="comment injected">// calls bar on foo</span>
<span class="comment documentation">/// </span><span class="macro injected">assert!</span><span class="parenthesis injected">(</span><span class="none injected">foo</span><span class="operator injected">.</span><span class="none injected">bar</span><span class="parenthesis injected">(</span><span class="parenthesis injected">)</span><span class="parenthesis injected">)</span><span class="semicolon injected">;</span>
<span class="comment documentation">/// </span><span class="module injected">assert</span><span class="macro_bang injected">!</span><span class="parenthesis injected">(</span><span class="none injected">foo</span><span class="operator injected">.</span><span class="none injected">bar</span><span class="parenthesis injected">(</span><span class="parenthesis injected">)</span><span class="parenthesis injected">)</span><span class="semicolon injected">;</span>
<span class="comment documentation">///</span>
<span class="comment documentation">/// </span><span class="keyword injected">let</span><span class="none injected"> </span><span class="variable declaration injected">bar</span><span class="none injected"> </span><span class="operator injected">=</span><span class="none injected"> </span><span class="variable injected">foo</span><span class="operator injected">.</span><span class="field injected">bar</span><span class="none injected"> </span><span class="logical injected">||</span><span class="none injected"> </span><span class="struct injected">Foo</span><span class="operator injected">::</span><span class="constant injected">bar</span><span class="semicolon injected">;</span>
<span class="comment documentation">///</span>
@ -129,7 +129,7 @@ pre { color: #DCDCCC; background: #3F3F3F; font-size: 22px; padd
<span class="comment documentation">/// ```</span>
<span class="comment documentation">/// </span><span class="keyword injected">macro_rules</span><span class="punctuation injected">!</span><span class="none injected"> </span><span class="macro declaration injected">noop</span><span class="none injected"> </span><span class="brace injected">{</span><span class="none injected"> </span><span class="parenthesis injected">(</span><span class="punctuation injected">$</span><span class="none injected">expr</span><span class="colon injected">:</span><span class="none injected">expr</span><span class="parenthesis injected">)</span><span class="none injected"> </span><span class="operator injected">=</span><span class="angle injected">&gt;</span><span class="none injected"> </span><span class="brace injected">{</span><span class="none injected"> </span><span class="punctuation injected">$</span><span class="none injected">expr </span><span class="brace injected">}</span><span class="brace injected">}</span>
<span class="comment documentation">/// </span><span class="macro injected">noop!</span><span class="parenthesis injected">(</span><span class="numeric_literal injected">1</span><span class="parenthesis injected">)</span><span class="semicolon injected">;</span>
<span class="comment documentation">/// </span><span class="macro injected">noop</span><span class="macro_bang injected">!</span><span class="parenthesis injected">(</span><span class="numeric_literal injected">1</span><span class="parenthesis injected">)</span><span class="semicolon injected">;</span>
<span class="comment documentation">/// ```</span>
<span class="keyword">macro_rules</span><span class="punctuation">!</span> <span class="macro declaration">noop</span> <span class="brace">{</span>
<span class="parenthesis">(</span><span class="punctuation">$</span>expr<span class="colon">:</span>expr<span class="parenthesis">)</span> <span class="operator">=</span><span class="angle">&gt;</span> <span class="brace">{</span>
@ -149,7 +149,7 @@ pre { color: #DCDCCC; background: #3F3F3F; font-size: 22px; padd
<span class="comment documentation">///</span>
<span class="attribute_bracket attribute">#</span><span class="attribute_bracket attribute">[</span><span class="builtin_attr attribute library">cfg_attr</span><span class="parenthesis attribute">(</span><span class="none attribute">feature</span><span class="attribute_bracket attribute"> </span><span class="operator attribute">=</span><span class="attribute_bracket attribute"> </span><span class="string_literal attribute">"alloc"</span><span class="comma attribute">,</span><span class="attribute_bracket attribute"> </span><span class="none attribute">doc</span><span class="attribute_bracket attribute"> </span><span class="operator attribute">=</span><span class="attribute_bracket attribute"> </span><span class="string_literal attribute">"```rust"</span><span class="parenthesis attribute">)</span><span class="attribute_bracket attribute">]</span>
<span class="attribute_bracket attribute">#</span><span class="attribute_bracket attribute">[</span><span class="builtin_attr attribute library">cfg_attr</span><span class="parenthesis attribute">(</span><span class="none attribute">not</span><span class="parenthesis attribute">(</span><span class="none attribute">feature</span><span class="attribute_bracket attribute"> </span><span class="operator attribute">=</span><span class="attribute_bracket attribute"> </span><span class="string_literal attribute">"alloc"</span><span class="parenthesis attribute">)</span><span class="comma attribute">,</span><span class="attribute_bracket attribute"> </span><span class="none attribute">doc</span><span class="attribute_bracket attribute"> </span><span class="operator attribute">=</span><span class="attribute_bracket attribute"> </span><span class="string_literal attribute">"```ignore"</span><span class="parenthesis attribute">)</span><span class="attribute_bracket attribute">]</span>
<span class="comment documentation">/// </span><span class="keyword injected">let</span><span class="none injected"> </span><span class="punctuation injected">_</span><span class="none injected"> </span><span class="operator injected">=</span><span class="none injected"> </span><span class="function injected">example</span><span class="parenthesis injected">(</span><span class="operator injected">&</span><span class="none injected">alloc::</span><span class="macro injected">vec!</span><span class="bracket injected">[</span><span class="numeric_literal injected">1</span><span class="comma injected">,</span><span class="none injected"> </span><span class="numeric_literal injected">2</span><span class="comma injected">,</span><span class="none injected"> </span><span class="numeric_literal injected">3</span><span class="bracket injected">]</span><span class="parenthesis injected">)</span><span class="semicolon injected">;</span>
<span class="comment documentation">/// </span><span class="keyword injected">let</span><span class="none injected"> </span><span class="punctuation injected">_</span><span class="none injected"> </span><span class="operator injected">=</span><span class="none injected"> </span><span class="function injected">example</span><span class="parenthesis injected">(</span><span class="operator injected">&</span><span class="module injected">alloc</span><span class="operator injected">::</span><span class="module injected">vec</span><span class="macro_bang injected">!</span><span class="bracket injected">[</span><span class="numeric_literal injected">1</span><span class="comma injected">,</span><span class="none injected"> </span><span class="numeric_literal injected">2</span><span class="comma injected">,</span><span class="none injected"> </span><span class="numeric_literal injected">3</span><span class="bracket injected">]</span><span class="parenthesis injected">)</span><span class="semicolon injected">;</span>
<span class="comment documentation">/// ```</span>
<span class="keyword">pub</span> <span class="keyword">fn</span> <span class="function declaration public">mix_and_match</span><span class="parenthesis">(</span><span class="parenthesis">)</span> <span class="brace">{</span><span class="brace">}</span>

2
crates/ide/src/syntax_highlighting/test_data/highlight_injection.html
View file

@ -46,7 +46,7 @@ pre { color: #DCDCCC; background: #3F3F3F; font-size: 22px; padd
<span class="function">fixture</span><span class="parenthesis">(</span><span class="string_literal">r#"</span>
<span class="keyword">trait</span> <span class="trait declaration">Foo</span> <span class="brace">{</span>
<span class="keyword">fn</span> <span class="function associated declaration static trait">foo</span><span class="parenthesis">(</span><span class="parenthesis">)</span> <span class="brace">{</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"2 + 2 = {}"</span><span class="comma">,</span> <span class="numeric_literal">4</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="unresolved_reference">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"2 + 2 = {}"</span><span class="comma">,</span> <span class="numeric_literal">4</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="brace">}</span>
<span class="brace">}</span><span class="string_literal">"#</span>
<span class="parenthesis">)</span><span class="semicolon">;</span>

98
crates/ide/src/syntax_highlighting/test_data/highlight_strings.html
View file

@ -92,58 +92,58 @@ pre { color: #DCDCCC; background: #3F3F3F; font-size: 22px; padd
<span class="keyword">fn</span> <span class="function declaration">main</span><span class="parenthesis">(</span><span class="parenthesis">)</span> <span class="brace">{</span>
<span class="comment">// from https://doc.rust-lang.org/std/fmt/index.html</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"Hello"</span><span class="parenthesis">)</span><span class="semicolon">;</span> <span class="comment">// =&gt; "Hello"</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"Hello, </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="comma">,</span> <span class="string_literal">"world"</span><span class="parenthesis">)</span><span class="semicolon">;</span> <span class="comment">// =&gt; "Hello, world!"</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"The number is </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> <span class="numeric_literal">1</span><span class="parenthesis">)</span><span class="semicolon">;</span> <span class="comment">// =&gt; "The number is 1"</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="format_specifier">?</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> <span class="parenthesis">(</span><span class="numeric_literal">3</span><span class="comma">,</span> <span class="numeric_literal">4</span><span class="parenthesis">)</span><span class="parenthesis">)</span><span class="semicolon">;</span> <span class="comment">// =&gt; "(3, 4)"</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="variable">value</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> value<span class="operator">=</span><span class="numeric_literal">4</span><span class="parenthesis">)</span><span class="semicolon">;</span> <span class="comment">// =&gt; "4"</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal"> </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> <span class="numeric_literal">1</span><span class="comma">,</span> <span class="numeric_literal">2</span><span class="parenthesis">)</span><span class="semicolon">;</span> <span class="comment">// =&gt; "1 2"</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="numeric_literal">0</span><span class="numeric_literal">4</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> <span class="numeric_literal">42</span><span class="parenthesis">)</span><span class="semicolon">;</span> <span class="comment">// =&gt; "0042" with leading zerosV</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="numeric_literal">1</span><span class="format_specifier">}</span><span class="string_literal"> </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal"> </span><span class="format_specifier">{</span><span class="numeric_literal">0</span><span class="format_specifier">}</span><span class="string_literal"> </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> <span class="numeric_literal">1</span><span class="comma">,</span> <span class="numeric_literal">2</span><span class="parenthesis">)</span><span class="semicolon">;</span> <span class="comment">// =&gt; "2 1 1 2"</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="variable">argument</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> argument <span class="operator">=</span> <span class="string_literal">"test"</span><span class="parenthesis">)</span><span class="semicolon">;</span> <span class="comment">// =&gt; "test"</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="variable">name</span><span class="format_specifier">}</span><span class="string_literal"> </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> <span class="numeric_literal">1</span><span class="comma">,</span> name <span class="operator">=</span> <span class="numeric_literal">2</span><span class="parenthesis">)</span><span class="semicolon">;</span> <span class="comment">// =&gt; "2 1"</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="variable">a</span><span class="format_specifier">}</span><span class="string_literal"> </span><span class="format_specifier">{</span><span class="variable">c</span><span class="format_specifier">}</span><span class="string_literal"> </span><span class="format_specifier">{</span><span class="variable">b</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> a<span class="operator">=</span><span class="string_literal">"a"</span><span class="comma">,</span> b<span class="operator">=</span><span class="char_literal">'b'</span><span class="comma">,</span> c<span class="operator">=</span><span class="numeric_literal">3</span><span class="parenthesis">)</span><span class="semicolon">;</span> <span class="comment">// =&gt; "a 3 b"</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"{{</span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">}}"</span><span class="comma">,</span> <span class="numeric_literal">2</span><span class="parenthesis">)</span><span class="semicolon">;</span> <span class="comment">// =&gt; "{2}"</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="numeric_literal">5</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="comma">,</span> <span class="string_literal">"x"</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="numeric_literal">1</span><span class="format_specifier">$</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="comma">,</span> <span class="string_literal">"x"</span><span class="comma">,</span> <span class="numeric_literal">5</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="numeric_literal">1</span><span class="format_specifier">:</span><span class="numeric_literal">0</span><span class="format_specifier">$</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="comma">,</span> <span class="numeric_literal">5</span><span class="comma">,</span> <span class="string_literal">"x"</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="variable">width</span><span class="format_specifier">$</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="comma">,</span> <span class="string_literal">"x"</span><span class="comma">,</span> width <span class="operator">=</span> <span class="numeric_literal">5</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="format_specifier">&lt;</span><span class="numeric_literal">5</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="comma">,</span> <span class="string_literal">"x"</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="format_specifier">-</span><span class="format_specifier">&lt;</span><span class="numeric_literal">5</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="comma">,</span> <span class="string_literal">"x"</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="format_specifier">^</span><span class="numeric_literal">5</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="comma">,</span> <span class="string_literal">"x"</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="format_specifier">&gt;</span><span class="numeric_literal">5</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="comma">,</span> <span class="string_literal">"x"</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="format_specifier">+</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="comma">,</span> <span class="numeric_literal">5</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="format_specifier">#</span><span class="variable">x</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="comma">,</span> <span class="numeric_literal">27</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="numeric_literal">0</span><span class="numeric_literal">5</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="comma">,</span> <span class="numeric_literal">5</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="numeric_literal">0</span><span class="numeric_literal">5</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="comma">,</span> <span class="numeric_literal">-</span><span class="numeric_literal">5</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="format_specifier">#</span><span class="numeric_literal">0</span><span class="numeric_literal">10</span><span class="variable">x</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="comma">,</span> <span class="numeric_literal">27</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="numeric_literal">0</span><span class="format_specifier">}</span><span class="string_literal"> is </span><span class="format_specifier">{</span><span class="numeric_literal">1</span><span class="format_specifier">:</span><span class="format_specifier">.</span><span class="numeric_literal">5</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> <span class="string_literal">"x"</span><span class="comma">,</span> <span class="numeric_literal">0.01</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="numeric_literal">1</span><span class="format_specifier">}</span><span class="string_literal"> is </span><span class="format_specifier">{</span><span class="numeric_literal">2</span><span class="format_specifier">:</span><span class="format_specifier">.</span><span class="numeric_literal">0</span><span class="format_specifier">$</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> <span class="numeric_literal">5</span><span class="comma">,</span> <span class="string_literal">"x"</span><span class="comma">,</span> <span class="numeric_literal">0.01</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="numeric_literal">0</span><span class="format_specifier">}</span><span class="string_literal"> is </span><span class="format_specifier">{</span><span class="numeric_literal">2</span><span class="format_specifier">:</span><span class="format_specifier">.</span><span class="numeric_literal">1</span><span class="format_specifier">$</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> <span class="string_literal">"x"</span><span class="comma">,</span> <span class="numeric_literal">5</span><span class="comma">,</span> <span class="numeric_literal">0.01</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal"> is </span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="format_specifier">.</span><span class="format_specifier">*</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> <span class="string_literal">"x"</span><span class="comma">,</span> <span class="numeric_literal">5</span><span class="comma">,</span> <span class="numeric_literal">0.01</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal"> is </span><span class="format_specifier">{</span><span class="numeric_literal">2</span><span class="format_specifier">:</span><span class="format_specifier">.</span><span class="format_specifier">*</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> <span class="string_literal">"x"</span><span class="comma">,</span> <span class="numeric_literal">5</span><span class="comma">,</span> <span class="numeric_literal">0.01</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal"> is </span><span class="format_specifier">{</span><span class="variable">number</span><span class="format_specifier">:</span><span class="format_specifier">.</span><span class="variable">prec</span><span class="format_specifier">$</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> <span class="string_literal">"x"</span><span class="comma">,</span> prec <span class="operator">=</span> <span class="numeric_literal">5</span><span class="comma">,</span> number <span class="operator">=</span> <span class="numeric_literal">0.01</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">, `</span><span class="format_specifier">{</span><span class="variable">name</span><span class="format_specifier">:</span><span class="format_specifier">.</span><span class="format_specifier">*</span><span class="format_specifier">}</span><span class="string_literal">` has 3 fractional digits"</span><span class="comma">,</span> <span class="string_literal">"Hello"</span><span class="comma">,</span> <span class="numeric_literal">3</span><span class="comma">,</span> name<span class="operator">=</span><span class="numeric_literal">1234.56</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">, `</span><span class="format_specifier">{</span><span class="variable">name</span><span class="format_specifier">:</span><span class="format_specifier">.</span><span class="format_specifier">*</span><span class="format_specifier">}</span><span class="string_literal">` has 3 characters"</span><span class="comma">,</span> <span class="string_literal">"Hello"</span><span class="comma">,</span> <span class="numeric_literal">3</span><span class="comma">,</span> name<span class="operator">=</span><span class="string_literal">"1234.56"</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">, `</span><span class="format_specifier">{</span><span class="variable">name</span><span class="format_specifier">:</span><span class="format_specifier">&gt;</span><span class="numeric_literal">8</span><span class="format_specifier">.</span><span class="format_specifier">*</span><span class="format_specifier">}</span><span class="string_literal">` has 3 right-aligned characters"</span><span class="comma">,</span> <span class="string_literal">"Hello"</span><span class="comma">,</span> <span class="numeric_literal">3</span><span class="comma">,</span> name<span class="operator">=</span><span class="string_literal">"1234.56"</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"Hello {{}}"</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"{{ Hello"</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"Hello"</span><span class="parenthesis">)</span><span class="semicolon">;</span> <span class="comment">// =&gt; "Hello"</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"Hello, </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="comma">,</span> <span class="string_literal">"world"</span><span class="parenthesis">)</span><span class="semicolon">;</span> <span class="comment">// =&gt; "Hello, world!"</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"The number is </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> <span class="numeric_literal">1</span><span class="parenthesis">)</span><span class="semicolon">;</span> <span class="comment">// =&gt; "The number is 1"</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="format_specifier">?</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> <span class="parenthesis">(</span><span class="numeric_literal">3</span><span class="comma">,</span> <span class="numeric_literal">4</span><span class="parenthesis">)</span><span class="parenthesis">)</span><span class="semicolon">;</span> <span class="comment">// =&gt; "(3, 4)"</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="variable">value</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> value<span class="operator">=</span><span class="numeric_literal">4</span><span class="parenthesis">)</span><span class="semicolon">;</span> <span class="comment">// =&gt; "4"</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal"> </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> <span class="numeric_literal">1</span><span class="comma">,</span> <span class="numeric_literal">2</span><span class="parenthesis">)</span><span class="semicolon">;</span> <span class="comment">// =&gt; "1 2"</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="numeric_literal">0</span><span class="numeric_literal">4</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> <span class="numeric_literal">42</span><span class="parenthesis">)</span><span class="semicolon">;</span> <span class="comment">// =&gt; "0042" with leading zerosV</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="numeric_literal">1</span><span class="format_specifier">}</span><span class="string_literal"> </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal"> </span><span class="format_specifier">{</span><span class="numeric_literal">0</span><span class="format_specifier">}</span><span class="string_literal"> </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> <span class="numeric_literal">1</span><span class="comma">,</span> <span class="numeric_literal">2</span><span class="parenthesis">)</span><span class="semicolon">;</span> <span class="comment">// =&gt; "2 1 1 2"</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="variable">argument</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> argument <span class="operator">=</span> <span class="string_literal">"test"</span><span class="parenthesis">)</span><span class="semicolon">;</span> <span class="comment">// =&gt; "test"</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="variable">name</span><span class="format_specifier">}</span><span class="string_literal"> </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> <span class="numeric_literal">1</span><span class="comma">,</span> name <span class="operator">=</span> <span class="numeric_literal">2</span><span class="parenthesis">)</span><span class="semicolon">;</span> <span class="comment">// =&gt; "2 1"</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="variable">a</span><span class="format_specifier">}</span><span class="string_literal"> </span><span class="format_specifier">{</span><span class="variable">c</span><span class="format_specifier">}</span><span class="string_literal"> </span><span class="format_specifier">{</span><span class="variable">b</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> a<span class="operator">=</span><span class="string_literal">"a"</span><span class="comma">,</span> b<span class="operator">=</span><span class="char_literal">'b'</span><span class="comma">,</span> c<span class="operator">=</span><span class="numeric_literal">3</span><span class="parenthesis">)</span><span class="semicolon">;</span> <span class="comment">// =&gt; "a 3 b"</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"{{</span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">}}"</span><span class="comma">,</span> <span class="numeric_literal">2</span><span class="parenthesis">)</span><span class="semicolon">;</span> <span class="comment">// =&gt; "{2}"</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="numeric_literal">5</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="comma">,</span> <span class="string_literal">"x"</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="numeric_literal">1</span><span class="format_specifier">$</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="comma">,</span> <span class="string_literal">"x"</span><span class="comma">,</span> <span class="numeric_literal">5</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="numeric_literal">1</span><span class="format_specifier">:</span><span class="numeric_literal">0</span><span class="format_specifier">$</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="comma">,</span> <span class="numeric_literal">5</span><span class="comma">,</span> <span class="string_literal">"x"</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="variable">width</span><span class="format_specifier">$</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="comma">,</span> <span class="string_literal">"x"</span><span class="comma">,</span> width <span class="operator">=</span> <span class="numeric_literal">5</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="format_specifier">&lt;</span><span class="numeric_literal">5</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="comma">,</span> <span class="string_literal">"x"</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="format_specifier">-</span><span class="format_specifier">&lt;</span><span class="numeric_literal">5</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="comma">,</span> <span class="string_literal">"x"</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="format_specifier">^</span><span class="numeric_literal">5</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="comma">,</span> <span class="string_literal">"x"</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="format_specifier">&gt;</span><span class="numeric_literal">5</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="comma">,</span> <span class="string_literal">"x"</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="format_specifier">+</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="comma">,</span> <span class="numeric_literal">5</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="format_specifier">#</span><span class="variable">x</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="comma">,</span> <span class="numeric_literal">27</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="numeric_literal">0</span><span class="numeric_literal">5</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="comma">,</span> <span class="numeric_literal">5</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="numeric_literal">0</span><span class="numeric_literal">5</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="comma">,</span> <span class="numeric_literal">-</span><span class="numeric_literal">5</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="format_specifier">#</span><span class="numeric_literal">0</span><span class="numeric_literal">10</span><span class="variable">x</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="comma">,</span> <span class="numeric_literal">27</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="numeric_literal">0</span><span class="format_specifier">}</span><span class="string_literal"> is </span><span class="format_specifier">{</span><span class="numeric_literal">1</span><span class="format_specifier">:</span><span class="format_specifier">.</span><span class="numeric_literal">5</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> <span class="string_literal">"x"</span><span class="comma">,</span> <span class="numeric_literal">0.01</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="numeric_literal">1</span><span class="format_specifier">}</span><span class="string_literal"> is </span><span class="format_specifier">{</span><span class="numeric_literal">2</span><span class="format_specifier">:</span><span class="format_specifier">.</span><span class="numeric_literal">0</span><span class="format_specifier">$</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> <span class="numeric_literal">5</span><span class="comma">,</span> <span class="string_literal">"x"</span><span class="comma">,</span> <span class="numeric_literal">0.01</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="numeric_literal">0</span><span class="format_specifier">}</span><span class="string_literal"> is </span><span class="format_specifier">{</span><span class="numeric_literal">2</span><span class="format_specifier">:</span><span class="format_specifier">.</span><span class="numeric_literal">1</span><span class="format_specifier">$</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> <span class="string_literal">"x"</span><span class="comma">,</span> <span class="numeric_literal">5</span><span class="comma">,</span> <span class="numeric_literal">0.01</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal"> is </span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="format_specifier">.</span><span class="format_specifier">*</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> <span class="string_literal">"x"</span><span class="comma">,</span> <span class="numeric_literal">5</span><span class="comma">,</span> <span class="numeric_literal">0.01</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal"> is </span><span class="format_specifier">{</span><span class="numeric_literal">2</span><span class="format_specifier">:</span><span class="format_specifier">.</span><span class="format_specifier">*</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> <span class="string_literal">"x"</span><span class="comma">,</span> <span class="numeric_literal">5</span><span class="comma">,</span> <span class="numeric_literal">0.01</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal"> is </span><span class="format_specifier">{</span><span class="variable">number</span><span class="format_specifier">:</span><span class="format_specifier">.</span><span class="variable">prec</span><span class="format_specifier">$</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> <span class="string_literal">"x"</span><span class="comma">,</span> prec <span class="operator">=</span> <span class="numeric_literal">5</span><span class="comma">,</span> number <span class="operator">=</span> <span class="numeric_literal">0.01</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">, `</span><span class="format_specifier">{</span><span class="variable">name</span><span class="format_specifier">:</span><span class="format_specifier">.</span><span class="format_specifier">*</span><span class="format_specifier">}</span><span class="string_literal">` has 3 fractional digits"</span><span class="comma">,</span> <span class="string_literal">"Hello"</span><span class="comma">,</span> <span class="numeric_literal">3</span><span class="comma">,</span> name<span class="operator">=</span><span class="numeric_literal">1234.56</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">, `</span><span class="format_specifier">{</span><span class="variable">name</span><span class="format_specifier">:</span><span class="format_specifier">.</span><span class="format_specifier">*</span><span class="format_specifier">}</span><span class="string_literal">` has 3 characters"</span><span class="comma">,</span> <span class="string_literal">"Hello"</span><span class="comma">,</span> <span class="numeric_literal">3</span><span class="comma">,</span> name<span class="operator">=</span><span class="string_literal">"1234.56"</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">, `</span><span class="format_specifier">{</span><span class="variable">name</span><span class="format_specifier">:</span><span class="format_specifier">&gt;</span><span class="numeric_literal">8</span><span class="format_specifier">.</span><span class="format_specifier">*</span><span class="format_specifier">}</span><span class="string_literal">` has 3 right-aligned characters"</span><span class="comma">,</span> <span class="string_literal">"Hello"</span><span class="comma">,</span> <span class="numeric_literal">3</span><span class="comma">,</span> name<span class="operator">=</span><span class="string_literal">"1234.56"</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"Hello {{}}"</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"{{ Hello"</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">r"Hello, </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="comma">,</span> <span class="string_literal">"world"</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">r"Hello, </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="comma">,</span> <span class="string_literal">"world"</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="comment">// escape sequences</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"Hello</span><span class="escape_sequence">\n</span><span class="string_literal">World"</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="escape_sequence">\u{48}</span><span class="escape_sequence">\x65</span><span class="escape_sequence">\x6C</span><span class="escape_sequence">\x6C</span><span class="escape_sequence">\x6F</span><span class="string_literal"> World"</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"Hello</span><span class="escape_sequence">\n</span><span class="string_literal">World"</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="escape_sequence">\u{48}</span><span class="escape_sequence">\x65</span><span class="escape_sequence">\x6C</span><span class="escape_sequence">\x6C</span><span class="escape_sequence">\x6F</span><span class="string_literal"> World"</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="escape_sequence">\x41</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> A <span class="operator">=</span> <span class="numeric_literal">92</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="variable">ничоси</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> ничоси <span class="operator">=</span> <span class="numeric_literal">92</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="escape_sequence">\x41</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> A <span class="operator">=</span> <span class="numeric_literal">92</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="variable">ничоси</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> ничоси <span class="operator">=</span> <span class="numeric_literal">92</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="variable">x</span><span class="format_specifier">?</span><span class="format_specifier">}</span><span class="string_literal"> </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal"> "</span><span class="comma">,</span> <span class="unresolved_reference">thingy</span><span class="comma">,</span> <span class="unresolved_reference">n2</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">panic!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> <span class="numeric_literal">0</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">panic!</span><span class="parenthesis">(</span><span class="string_literal">"more </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> <span class="numeric_literal">1</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">assert!</span><span class="parenthesis">(</span><span class="bool_literal">true</span><span class="comma">,</span> <span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> <span class="numeric_literal">1</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">assert!</span><span class="parenthesis">(</span><span class="bool_literal">true</span><span class="comma">,</span> <span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal"> asdasd"</span><span class="comma">,</span> <span class="numeric_literal">1</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">toho!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">fmt"</span><span class="comma">,</span> <span class="numeric_literal">0</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">asm!</span><span class="parenthesis">(</span><span class="string_literal">"mov eax, </span><span class="format_specifier">{</span><span class="numeric_literal">0</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">format_args!</span><span class="parenthesis">(</span>concat<span class="punctuation">!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="parenthesis">)</span><span class="comma">,</span> <span class="string_literal">"{}"</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="variable">x</span><span class="format_specifier">?</span><span class="format_specifier">}</span><span class="string_literal"> </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal"> "</span><span class="comma">,</span> <span class="unresolved_reference">thingy</span><span class="comma">,</span> <span class="unresolved_reference">n2</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">panic</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> <span class="numeric_literal">0</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">panic</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"more </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> <span class="numeric_literal">1</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">assert</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="bool_literal">true</span><span class="comma">,</span> <span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> <span class="numeric_literal">1</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">assert</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="bool_literal">true</span><span class="comma">,</span> <span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal"> asdasd"</span><span class="comma">,</span> <span class="numeric_literal">1</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">toho</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">fmt"</span><span class="comma">,</span> <span class="numeric_literal">0</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">asm</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"mov eax, </span><span class="format_specifier">{</span><span class="numeric_literal">0</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">format_args</span><span class="macro_bang">!</span><span class="parenthesis">(</span>concat<span class="punctuation">!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="parenthesis">)</span><span class="comma">,</span> <span class="string_literal">"{}"</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="brace">}</span></code></pre>

18
crates/ide/src/syntax_highlighting/test_data/highlighting.html
View file

@ -56,7 +56,7 @@ pre { color: #DCDCCC; background: #3F3F3F; font-size: 22px; padd
<span class="keyword">pub</span> <span class="keyword">trait</span> <span class="trait declaration public">Fn</span><span class="angle">&lt;</span><span class="type_param declaration">Args</span><span class="angle">&gt;</span><span class="colon">:</span> <span class="trait public">FnMut</span><span class="angle">&lt;</span><span class="type_param">Args</span><span class="angle">&gt;</span> <span class="brace">{</span><span class="brace">}</span>
<span class="brace">}</span>
proc_macros::<span class="macro">mirror!</span> <span class="brace">{</span>
<span class="module crate_root library">proc_macros</span><span class="operator">::</span><span class="function library">mirror</span><span class="macro_bang">!</span> <span class="brace">{</span>
<span class="brace">{</span>
<span class="comma">,</span><span class="builtin_type">i32</span> <span class="colon">:</span><span class="field declaration public">x</span> <span class="keyword">pub</span>
<span class="comma">,</span><span class="builtin_type">i32</span> <span class="colon">:</span><span class="field declaration public">y</span> <span class="keyword">pub</span>
@ -138,7 +138,7 @@ proc_macros::<span class="macro">mirror!</span> <span class="brace">{</span>
<span class="parenthesis">(</span><span class="punctuation">$</span><span class="parenthesis">(</span><span class="punctuation">$</span>tt<span class="colon">:</span>tt<span class="parenthesis">)</span><span class="punctuation">*</span><span class="parenthesis">)</span> <span class="operator">=</span><span class="angle">&gt;</span> <span class="brace">{</span><span class="punctuation">$</span><span class="parenthesis">(</span><span class="punctuation">$</span>tt<span class="parenthesis">)</span><span class="punctuation">*</span><span class="brace">}</span>
<span class="brace">}</span>
<span class="macro">def_fn!</span> <span class="brace">{</span>
<span class="macro">def_fn</span><span class="macro_bang">!</span> <span class="brace">{</span>
<span class="keyword">fn</span> <span class="function declaration">bar</span><span class="parenthesis">(</span><span class="parenthesis">)</span> <span class="operator">-</span><span class="operator">&gt;</span> <span class="builtin_type">u32</span> <span class="brace">{</span>
<span class="numeric_literal">100</span>
<span class="brace">}</span>
@ -170,8 +170,8 @@ proc_macros::<span class="macro">mirror!</span> <span class="brace">{</span>
<span class="comment">// comment</span>
<span class="keyword">fn</span> <span class="function declaration">main</span><span class="parenthesis">(</span><span class="parenthesis">)</span> <span class="brace">{</span>
<span class="macro">println!</span><span class="parenthesis">(</span><span class="string_literal">"Hello, {}!"</span><span class="comma">,</span> <span class="numeric_literal">92</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">dont_color_me_braces!</span><span class="parenthesis">(</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="unresolved_reference">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"Hello, {}!"</span><span class="comma">,</span> <span class="numeric_literal">92</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">dont_color_me_braces</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="keyword">let</span> <span class="keyword">mut</span> <span class="variable declaration mutable">vec</span> <span class="operator">=</span> <span class="unresolved_reference">Vec</span><span class="operator">::</span><span class="unresolved_reference">new</span><span class="parenthesis">(</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="keyword control">if</span> <span class="bool_literal">true</span> <span class="brace">{</span>
@ -183,7 +183,7 @@ proc_macros::<span class="macro">mirror!</span> <span class="brace">{</span>
<span class="comment">// Do nothing</span>
<span class="brace">}</span>
<span class="macro">noop!</span><span class="parenthesis">(</span><span class="macro">noop</span><span class="macro">!</span><span class="parenthesis">(</span><span class="numeric_literal">1</span><span class="parenthesis">)</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="macro">noop</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="macro">noop</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="numeric_literal">1</span><span class="parenthesis">)</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="keyword">let</span> <span class="keyword">mut</span> <span class="variable declaration mutable">x</span> <span class="operator">=</span> <span class="numeric_literal">42</span><span class="semicolon">;</span>
<span class="variable mutable">x</span> <span class="arithmetic mutable">+=</span> <span class="numeric_literal">1</span><span class="semicolon">;</span>
@ -228,7 +228,7 @@ proc_macros::<span class="macro">mirror!</span> <span class="brace">{</span>
<span class="keyword">impl</span><span class="angle">&lt;</span><span class="type_param declaration">T</span><span class="angle">&gt;</span> <span class="enum">Option</span><span class="angle">&lt;</span><span class="type_param">T</span><span class="angle">&gt;</span> <span class="brace">{</span>
<span class="keyword">fn</span> <span class="function associated consuming declaration">and</span><span class="angle">&lt;</span><span class="type_param declaration">U</span><span class="angle">&gt;</span><span class="parenthesis">(</span><span class="self_keyword declaration">self</span><span class="comma">,</span> <span class="value_param declaration">other</span><span class="colon">:</span> <span class="enum">Option</span><span class="angle">&lt;</span><span class="type_param">U</span><span class="angle">&gt;</span><span class="parenthesis">)</span> <span class="operator">-&gt;</span> <span class="enum">Option</span><span class="angle">&lt;</span><span class="parenthesis">(</span><span class="type_param">T</span><span class="comma">,</span> <span class="type_param">U</span><span class="parenthesis">)</span><span class="angle">&gt;</span> <span class="brace">{</span>
<span class="keyword control">match</span> <span class="value_param">other</span> <span class="brace">{</span>
<span class="enum_variant">None</span> <span class="operator">=&gt;</span> <span class="macro">unimplemented!</span><span class="parenthesis">(</span><span class="parenthesis">)</span><span class="comma">,</span>
<span class="enum_variant">None</span> <span class="operator">=&gt;</span> <span class="unresolved_reference">unimplemented</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="parenthesis">)</span><span class="comma">,</span>
<span class="variable declaration">Nope</span> <span class="operator">=&gt;</span> <span class="variable">Nope</span><span class="comma">,</span>
<span class="brace">}</span>
<span class="brace">}</span>
@ -242,7 +242,7 @@ proc_macros::<span class="macro">mirror!</span> <span class="brace">{</span>
<span class="keyword async">async</span> <span class="keyword">fn</span> <span class="function async declaration">async_main</span><span class="parenthesis">(</span><span class="parenthesis">)</span> <span class="brace">{</span>
<span class="keyword">let</span> <span class="variable declaration">f1</span> <span class="operator">=</span> <span class="function async">learn_and_sing</span><span class="parenthesis">(</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="keyword">let</span> <span class="variable declaration">f2</span> <span class="operator">=</span> <span class="unresolved_reference">dance</span><span class="parenthesis">(</span><span class="parenthesis">)</span><span class="semicolon">;</span>
futures::<span class="macro">join!</span><span class="parenthesis">(</span>f1<span class="comma">,</span> f2<span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="unresolved_reference">futures</span><span class="operator">::</span><span class="unresolved_reference">join</span><span class="macro_bang">!</span><span class="parenthesis">(</span>f1<span class="comma">,</span> f2<span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="brace">}</span>
<span class="keyword">fn</span> <span class="function declaration">use_foo_items</span><span class="parenthesis">(</span><span class="parenthesis">)</span> <span class="brace">{</span>
@ -254,7 +254,7 @@ proc_macros::<span class="macro">mirror!</span> <span class="brace">{</span>
<span class="keyword">let</span> <span class="variable declaration">control_flow</span> <span class="operator">=</span> <span class="module crate_root library">foo</span><span class="operator">::</span><span class="function library">identity</span><span class="parenthesis">(</span><span class="module crate_root library">foo</span><span class="operator">::</span><span class="enum library">ControlFlow</span><span class="operator">::</span><span class="enum_variant library">Continue</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="keyword control">if</span> <span class="variable">control_flow</span><span class="operator">.</span><span class="function associated consuming library">should_die</span><span class="parenthesis">(</span><span class="parenthesis">)</span> <span class="brace">{</span>
foo::<span class="macro">die!</span><span class="parenthesis">(</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="module crate_root library">foo</span><span class="operator">::</span><span class="unresolved_reference">die</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="brace">}</span>
<span class="brace">}</span>
@ -262,7 +262,7 @@ proc_macros::<span class="macro">mirror!</span> <span class="brace">{</span>
<span class="keyword">impl</span> <span class="enum public">Bool</span> <span class="brace">{</span>
<span class="keyword">pub</span> <span class="keyword">const</span> <span class="keyword">fn</span> <span class="function associated consuming declaration public">to_primitive</span><span class="parenthesis">(</span><span class="self_keyword declaration">self</span><span class="parenthesis">)</span> <span class="operator">-&gt;</span> <span class="builtin_type">bool</span> <span class="brace">{</span>
<span class="macro">matches!</span><span class="parenthesis">(</span>self<span class="comma">,</span> Self<span class="colon">:</span><span class="colon">:</span>True<span class="parenthesis">)</span>
<span class="unresolved_reference">matches</span><span class="macro_bang">!</span><span class="parenthesis">(</span>self<span class="comma">,</span> Self<span class="colon">:</span><span class="colon">:</span>True<span class="parenthesis">)</span>
<span class="brace">}</span>
<span class="brace">}</span>
<span class="keyword">const</span> <span class="constant declaration">USAGE_OF_BOOL</span><span class="colon">:</span><span class="builtin_type">bool</span> <span class="operator">=</span> <span class="enum public">Bool</span><span class="operator">::</span><span class="enum_variant public">True</span><span class="operator">.</span><span class="function associated consuming public">to_primitive</span><span class="parenthesis">(</span><span class="parenthesis">)</span><span class="semicolon">;</span>

1
crates/rust-analyzer/src/semantic_tokens.rs
View file

@ -61,6 +61,7 @@ define_semantic_token_types![
(LABEL, "label"),
(LIFETIME, "lifetime"),
(LOGICAL, "logical"),
(MACRO_BANG, "macroBang"),
(OPERATOR, "operator"),
(PARENTHESIS, "parenthesis"),
(PUNCTUATION, "punctuation"),

1
crates/rust-analyzer/src/to_proto.rs
View file

@ -539,6 +539,7 @@ fn semantic_token_type_and_modifiers(
HlPunct::Colon => semantic_tokens::COLON,
HlPunct::Semi => semantic_tokens::SEMICOLON,
HlPunct::Other => semantic_tokens::PUNCTUATION,
HlPunct::MacroBang => semantic_tokens::MACRO_BANG,
},
};

8
editors/code/package.json
View file

@ -1240,6 +1240,11 @@
"description": "Style for logic operators",
"superType": "operator"
},
{
"id": "macroBang",
"description": "Style for the ! token of macro calls",
"superType": "punctuation"
},
{
"id": "operator",
"description": "Style for operators",
@ -1378,6 +1383,9 @@
"lifetime": [
"storage.modifier.lifetime.rust"
],
"macroBang": [
"entity.name.function.macro.rust"
],
"method": [
"entity.name.function.rust"
],