use std::ffi::CString;
use rustc_codegen_ssa::debuginfo::type_names;
use rustc_middle::ty::{self, Instance};
use crate::context::CodegenCx;
use crate::llvm;
use crate::llvm::debuginfo::DIScope;
use rustc_hir::def_id::DefId;
use super::util::{debug_context, DIB};
pub(crate) fn mangled_name_of_instance<'a, 'tcx>(
cx: &CodegenCx<'a, 'tcx>,
instance: Instance<'tcx>,
) -> ty::SymbolName<'tcx> {
let tcx = cx.tcx;
tcx.symbol_name(instance)
}
pub(crate) fn item_namespace<'ll>(cx: &CodegenCx<'ll, '_>, def_id: DefId) -> &'ll DIScope {
if let Some(&scope) = debug_context(cx).namespace_map.borrow().get(&def_id) {
return scope;
}
let def_key = cx.tcx.def_key(def_id);
let parent_scope = def_key.parent.map(|parent| {
item_namespace(
cx,
DefId {
krate: def_id.krate,
index: parent,
},
)
});
let namespace_name_string = CString::new({
let mut output = String::new();
type_names::push_item_name(cx.tcx, def_id, false, &mut output);
output
})
.unwrap();
let scope = unsafe {
llvm::LLVMRustDIBuilderCreateNameSpace(
DIB(cx),
parent_scope,
namespace_name_string.as_ptr(),
)
};
debug_context(cx)
.namespace_map
.borrow_mut()
.insert(def_id, scope);
scope
}