| use rustc::hir; |
| use rustc::hir::def::Def; |
| use rustc::mir::mono::{Linkage, Visibility}; |
| use rustc::ty::layout::HasTyCtxt; |
| use std::fmt; |
| use crate::base; |
| use crate::traits::*; |
| |
| pub use rustc::mir::mono::MonoItem; |
| |
| pub use rustc_mir::monomorphize::item::MonoItemExt as BaseMonoItemExt; |
| |
| pub trait MonoItemExt<'a, 'tcx: 'a>: fmt::Debug + BaseMonoItemExt<'a, 'tcx> { |
| fn define<Bx: BuilderMethods<'a, 'tcx>>(&self, cx: &'a Bx::CodegenCx) { |
| debug!("BEGIN IMPLEMENTING '{} ({})' in cgu {}", |
| self.to_string(cx.tcx(), true), |
| self.to_raw_string(), |
| cx.codegen_unit().name()); |
| |
| match *self.as_mono_item() { |
| MonoItem::Static(def_id) => { |
| let tcx = cx.tcx(); |
| let is_mutable = match tcx.describe_def(def_id) { |
| Some(Def::Static(_, is_mutable)) => is_mutable, |
| Some(other) => { |
| bug!("Expected Def::Static, found {:?}", other) |
| } |
| None => { |
| bug!("Expected Def::Static for {:?}, found nothing", def_id) |
| } |
| }; |
| cx.codegen_static(def_id, is_mutable); |
| } |
| MonoItem::GlobalAsm(hir_id) => { |
| let item = cx.tcx().hir().expect_item_by_hir_id(hir_id); |
| if let hir::ItemKind::GlobalAsm(ref ga) = item.node { |
| cx.codegen_global_asm(ga); |
| } else { |
| span_bug!(item.span, "Mismatch between hir::Item type and MonoItem type") |
| } |
| } |
| MonoItem::Fn(instance) => { |
| base::codegen_instance::<Bx>(&cx, instance); |
| } |
| } |
| |
| debug!("END IMPLEMENTING '{} ({})' in cgu {}", |
| self.to_string(cx.tcx(), true), |
| self.to_raw_string(), |
| cx.codegen_unit().name()); |
| } |
| |
| fn predefine<Bx: BuilderMethods<'a, 'tcx>>( |
| &self, |
| cx: &'a Bx::CodegenCx, |
| linkage: Linkage, |
| visibility: Visibility |
| ) { |
| debug!("BEGIN PREDEFINING '{} ({})' in cgu {}", |
| self.to_string(cx.tcx(), true), |
| self.to_raw_string(), |
| cx.codegen_unit().name()); |
| |
| let symbol_name = self.symbol_name(cx.tcx()).as_str(); |
| |
| debug!("symbol {}", &symbol_name); |
| |
| match *self.as_mono_item() { |
| MonoItem::Static(def_id) => { |
| cx.predefine_static(def_id, linkage, visibility, &symbol_name); |
| } |
| MonoItem::Fn(instance) => { |
| cx.predefine_fn(instance, linkage, visibility, &symbol_name); |
| } |
| MonoItem::GlobalAsm(..) => {} |
| } |
| |
| debug!("END PREDEFINING '{} ({})' in cgu {}", |
| self.to_string(cx.tcx(), true), |
| self.to_raw_string(), |
| cx.codegen_unit().name()); |
| } |
| |
| fn to_raw_string(&self) -> String { |
| match *self.as_mono_item() { |
| MonoItem::Fn(instance) => { |
| format!("Fn({:?}, {})", |
| instance.def, |
| instance.substs.as_ptr() as usize) |
| } |
| MonoItem::Static(id) => { |
| format!("Static({:?})", id) |
| } |
| MonoItem::GlobalAsm(id) => { |
| format!("GlobalAsm({:?})", id) |
| } |
| } |
| } |
| } |
| |
| impl<'a, 'tcx: 'a> MonoItemExt<'a, 'tcx> for MonoItem<'tcx> {} |