1 //===-- DebugLoc.cpp - Implement DebugLoc class ---------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "llvm/IR/DebugLoc.h"
11 #include "LLVMContextImpl.h"
12 #include "llvm/ADT/DenseMapInfo.h"
13 #include "llvm/IR/DebugInfo.h"
14 using namespace llvm;
15 
16 //===----------------------------------------------------------------------===//
17 // DebugLoc Implementation
18 //===----------------------------------------------------------------------===//
19 DebugLoc::DebugLoc(const DILocation *L) : Loc(const_cast<DILocation *>(L)) {}
20 DebugLoc::DebugLoc(const MDNode *L) : Loc(const_cast<MDNode *>(L)) {}
21 
22 DILocation *DebugLoc::get() const {
23   return cast_or_null<DILocation>(Loc.get());
24 }
25 
26 unsigned DebugLoc::getLine() const {
27   assert(get() && "Expected valid DebugLoc");
28   return get()->getLine();
29 }
30 
31 unsigned DebugLoc::getCol() const {
32   assert(get() && "Expected valid DebugLoc");
33   return get()->getColumn();
34 }
35 
36 MDNode *DebugLoc::getScope() const {
37   assert(get() && "Expected valid DebugLoc");
38   return get()->getScope();
39 }
40 
41 DILocation *DebugLoc::getInlinedAt() const {
42   assert(get() && "Expected valid DebugLoc");
43   return get()->getInlinedAt();
44 }
45 
46 MDNode *DebugLoc::getInlinedAtScope() const {
47   return cast<DILocation>(Loc)->getInlinedAtScope();
48 }
49 
50 DebugLoc DebugLoc::getFnDebugLoc() const {
51   // FIXME: Add a method on \a DILocation that does this work.
52   const MDNode *Scope = getInlinedAtScope();
53   if (auto *SP = getDISubprogram(Scope))
54     return DebugLoc::get(SP->getScopeLine(), 0, SP);
55 
56   return DebugLoc();
57 }
58 
59 DebugLoc DebugLoc::get(unsigned Line, unsigned Col, const MDNode *Scope,
60                        const MDNode *InlinedAt) {
61   // If no scope is available, this is an unknown location.
62   if (!Scope)
63     return DebugLoc();
64 
65   return DILocation::get(Scope->getContext(), Line, Col,
66                          const_cast<MDNode *>(Scope),
67                          const_cast<MDNode *>(InlinedAt));
68 }
69 
70 void DebugLoc::dump() const {
71 #ifndef NDEBUG
72   if (!Loc)
73     return;
74 
75   dbgs() << getLine();
76   if (getCol() != 0)
77     dbgs() << ',' << getCol();
78   if (DebugLoc InlinedAtDL = DebugLoc(getInlinedAt())) {
79     dbgs() << " @ ";
80     InlinedAtDL.dump();
81   } else
82     dbgs() << "\n";
83 #endif
84 }
85 
86 void DebugLoc::print(raw_ostream &OS) const {
87   if (!Loc)
88     return;
89 
90   // Print source line info.
91   auto *Scope = cast<DIScope>(getScope());
92   OS << Scope->getFilename();
93   OS << ':' << getLine();
94   if (getCol() != 0)
95     OS << ':' << getCol();
96 
97   if (DebugLoc InlinedAtDL = getInlinedAt()) {
98     OS << " @[ ";
99     InlinedAtDL.print(OS);
100     OS << " ]";
101   }
102 }
103