1 // Copyright 2015 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
13 use super::{CrateDebugContext};
14 use super::namespace::item_namespace;
16 use rustc::hir::def_id::DefId;
17 use rustc::ty::DefIdTree;
20 use llvm::debuginfo::{DIScope, DIBuilderRef, DIDescriptor, DIArray};
22 use common::{CrateContext};
25 use syntax_pos::{self, Span};
30 pub fn is_node_local_to_unit(cx: &CrateContext, node_id: ast::NodeId) -> bool
32 // The is_local_to_unit flag indicates whether a function is local to the
33 // current compilation unit (i.e. if it is *static* in the C-sense). The
34 // *reachable* set should provide a good approximation of this, as it
35 // contains everything that might leak out of the current crate (by being
36 // externally visible or by being inlined into something externally
37 // visible). It might better to use the `exported_items` set from
38 // `driver::CrateAnalysis` in the future, but (atm) this set is not
39 // available in the translation pass.
40 !cx.shared().exported_symbols().contains(&node_id)
43 #[allow(non_snake_case)]
44 pub fn create_DIArray(builder: DIBuilderRef, arr: &[DIDescriptor]) -> DIArray {
46 llvm::LLVMRustDIBuilderGetOrCreateArray(builder, arr.as_ptr(), arr.len() as u32)
50 /// Return syntax_pos::Loc corresponding to the beginning of the span
51 pub fn span_start(cx: &CrateContext, span: Span) -> syntax_pos::Loc {
52 cx.sess().codemap().lookup_char_pos(span.lo)
55 pub fn size_and_align_of(cx: &CrateContext, llvm_type: Type) -> (u64, u32) {
56 (machine::llsize_of_alloc(cx, llvm_type), machine::llalign_of_min(cx, llvm_type))
59 pub fn bytes_to_bits<T>(bytes: T) -> T
60 where T: ops::Mul<Output=T> + From<u8> {
65 pub fn debug_context<'a, 'tcx>(cx: &'a CrateContext<'a, 'tcx>)
66 -> &'a CrateDebugContext<'tcx> {
67 cx.dbg_cx().as_ref().unwrap()
71 #[allow(non_snake_case)]
72 pub fn DIB(cx: &CrateContext) -> DIBuilderRef {
73 cx.dbg_cx().as_ref().unwrap().builder
76 pub fn get_namespace_and_span_for_item(cx: &CrateContext, def_id: DefId)
78 let containing_scope = item_namespace(cx, cx.tcx().parent(def_id)
79 .expect("get_namespace_and_span_for_item: missing parent?"));
81 // Try to get some span information, if we have an inlined item.
82 let definition_span = cx.tcx().def_span(def_id);
84 (containing_scope, definition_span)