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use hir::{Ty, AdtDef, Docs};
use crate::completion::{CompletionContext, Completions, CompletionItem, CompletionItemKind};
use crate::completion::completion_item::CompletionKind;
/// Complete dot accesses, i.e. fields or methods (currently only fields).
pub(super) fn complete_struct_literal(acc: &mut Completions, ctx: &CompletionContext) {
let (function, struct_lit) = match (&ctx.function, ctx.struct_lit_syntax) {
(Some(function), Some(struct_lit)) => (function, struct_lit),
_ => return,
};
let infer_result = function.infer(ctx.db);
let syntax_mapping = function.body_syntax_mapping(ctx.db);
let expr = match syntax_mapping.node_expr(struct_lit.into()) {
Some(expr) => expr,
None => return,
};
let ty = infer_result[expr].clone();
let (adt, substs) = match ty {
Ty::Adt { def_id, ref substs, .. } => (def_id, substs),
_ => return,
};
match adt {
AdtDef::Struct(s) => {
for field in s.fields(ctx.db) {
CompletionItem::new(
CompletionKind::Reference,
ctx.source_range(),
field.name(ctx.db).to_string(),
)
.kind(CompletionItemKind::Field)
.detail(field.ty(ctx.db).subst(substs).to_string())
.set_documentation(field.docs(ctx.db))
.add_to(acc);
}
}
// TODO unions
AdtDef::Enum(_) => (),
};
}
#[cfg(test)]
mod tests {
use crate::completion::*;
use crate::completion::completion_item::check_completion;
fn check_ref_completion(name: &str, code: &str) {
check_completion(name, code, CompletionKind::Reference);
}
#[test]
fn test_struct_literal_field() {
check_ref_completion(
"test_struct_literal_field",
r"
struct A { the_field: u32 }
fn foo() {
A { the<|> }
}
",
);
}
}
|
