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Basic support for decl macros 2.0

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This commit is contained in:
Jonas Schievink 2020-12-15 18:43:19 +01:00
parent bd4c352831
commit c31c3246a8
15 changed files with 195 additions and 28 deletions
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18
crates/syntax/src/display.rs
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@ -76,8 +76,20 @@ pub fn type_label(node: &ast::TypeAlias) -> String {
label.trim().to_owned()
}
pub fn macro_label(node: &ast::MacroRules) -> String {
pub fn macro_label(node: &ast::Macro) -> String {
let name = node.name().map(|name| name.syntax().text().to_string()).unwrap_or_default();
let vis = if node.has_atom_attr("macro_export") { "#[macro_export]\n" } else { "" };
format!("{}macro_rules! {}", vis, name)
match node {
ast::Macro::MacroRules(node) => {
let vis = if node.has_atom_attr("macro_export") { "#[macro_export]\n" } else { "" };
format!("{}macro_rules! {}", vis, name)
}
ast::Macro::MacroDef(node) => {
let mut s = String::new();
if let Some(vis) = node.visibility() {
format_to!(s, "{} ", vis);
}
format_to!(s, "macro {}", name);
s
}
}
}