Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC)

[oota-llvm.git] / include / llvm / DebugInfo / DWARF / DWARFUnit.h

diff --git a/include/llvm/DebugInfo/DWARF/DWARFUnit.h b/include/llvm/DebugInfo/DWARF/DWARFUnit.h
index ff6a4022ffc52b3620795eba6d26cfe2bbbbe784..5604b93f220587cb1b40bbfcbc4de6debd889332 100644 (file)
--- a/include/llvm/DebugInfo/DWARF/DWARFUnit.h
+++ b/include/llvm/DebugInfo/DWARF/DWARFUnit.h
@@ -10,6 +10,7 @@
 #ifndef LLVM_LIB_DEBUGINFO_DWARFUNIT_H
 #define LLVM_LIB_DEBUGINFO_DWARFUNIT_H
 
+#include "llvm/ADT/STLExtras.h"
 #include "llvm/DebugInfo/DWARF/DWARFDebugAbbrev.h"
 #include "llvm/DebugInfo/DWARF/DWARFDebugInfoEntry.h"
 #include "llvm/DebugInfo/DWARF/DWARFDebugRangeList.h"
@@ -45,7 +46,7 @@ protected:
                          const DWARFDebugAbbrev *DA, StringRef RS, StringRef SS,
                          StringRef SOS, StringRef AOS, bool isLittleEndian) = 0;
 
-  ~DWARFUnitSectionBase() {}
+  ~DWARFUnitSectionBase() = default;
 };
 
 /// Concrete instance of DWARFUnitSection, specialized for one Unit type.
@@ -194,9 +195,8 @@ public:
     BaseAddr = base_addr;
   }
 
-  const DWARFDebugInfoEntryMinimal *
-  getCompileUnitDIE(bool extract_cu_die_only = true) {
-    extractDIEsIfNeeded(extract_cu_die_only);
+  const DWARFDebugInfoEntryMinimal *getUnitDIE(bool ExtractUnitDIEOnly = true) {
+    extractDIEsIfNeeded(ExtractUnitDIEOnly);
     return DieArray.empty() ? nullptr : &DieArray[0];
   }
 
@@ -225,14 +225,33 @@ public:
   /// It is illegal to call this method with a DIE that hasn't be
   /// created by this unit. In other word, it's illegal to call this
   /// method on a DIE that isn't accessible by following
-  /// children/sibling links starting from this unit's
-  /// getCompileUnitDIE().
+  /// children/sibling links starting from this unit's getUnitDIE().
   uint32_t getDIEIndex(const DWARFDebugInfoEntryMinimal *DIE) {
     assert(!DieArray.empty() && DIE >= &DieArray[0] &&
            DIE < &DieArray[0] + DieArray.size());
     return DIE - &DieArray[0];
   }
 
+  /// \brief Return the DIE object at the given index.
+  const DWARFDebugInfoEntryMinimal *getDIEAtIndex(unsigned Index) const {
+    assert(Index < DieArray.size());
+    return &DieArray[Index];
+  }
+
+  /// \brief Return the DIE object for a given offset inside the
+  /// unit's DIE vector.
+  ///
+  /// The unit needs to have his DIEs extracted for this method to work.
+  const DWARFDebugInfoEntryMinimal *getDIEForOffset(uint32_t Offset) const {
+    assert(!DieArray.empty());
+    auto it = std::lower_bound(
+        DieArray.begin(), DieArray.end(), Offset,
+        [=](const DWARFDebugInfoEntryMinimal &LHS, uint32_t Offset) {
+          return LHS.getOffset() < Offset;
+        });
+    return it == DieArray.end() ? nullptr : &*it;
+  }
+
 private:
   /// Size in bytes of the .debug_info data associated with this compile unit.
   size_t getDebugInfoSize() const { return Length + 4 - getHeaderSize(); }