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Primitive signature help for mbe

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kjeremy 2019-10-29 12:16:55 -04:00
parent de16f94ada
commit eb220a081b
2 changed files with 58 additions and 0 deletions
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22
crates/ra_ide_api/src/display/function_signature.rs
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@ -17,6 +17,7 @@ pub enum CallableKind {
Function,
StructConstructor,
VariantConstructor,
Macro,
}
/// Contains information about a function signature
@ -123,6 +124,26 @@ impl FunctionSignature {
.with_doc_opt(variant.docs(db)),
)
}
pub(crate) fn from_macro(db: &db::RootDatabase, macro_def: hir::MacroDef) -> Option<Self> {
let node: ast::MacroCall = macro_def.source(db).ast;
let params = vec![];
Some(
FunctionSignature {
kind: CallableKind::Macro,
visibility: None,
name: node.name().map(|n| n.text().to_string()),
ret_type: None,
parameters: params,
generic_parameters: vec![],
where_predicates: vec![],
doc: None,
}
.with_doc_opt(macro_def.docs(db)),
)
}
}
impl From<&'_ ast::FnDef> for FunctionSignature {
@ -167,6 +188,7 @@ impl Display for FunctionSignature {
CallableKind::Function => write!(f, "fn {}", name)?,
CallableKind::StructConstructor => write!(f, "struct {}", name)?,
CallableKind::VariantConstructor => write!(f, "{}", name)?,
CallableKind::Macro => write!(f, "{}!", name)?,
}
}