LCOV - code coverage report
Current view: top level - include/llvm/DebugInfo/CodeView - DebugStringTableSubsection.h (source / functions) Hit Total Coverage
Test: llvm-toolchain.info Lines: 6 6 100.0 %
Date: 2017-09-14 15:23:50 Functions: 3 5 60.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : //===- DebugStringTableSubsection.h - CodeView String Table -----*- C++ -*-===//
       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             : #ifndef LLVM_DEBUGINFO_CODEVIEW_DEBUGSTRINGTABLESUBSECTION_H
      11             : #define LLVM_DEBUGINFO_CODEVIEW_DEBUGSTRINGTABLESUBSECTION_H
      12             : 
      13             : #include "llvm/ADT/StringMap.h"
      14             : #include "llvm/ADT/StringRef.h"
      15             : #include "llvm/DebugInfo/CodeView/CodeView.h"
      16             : #include "llvm/DebugInfo/CodeView/DebugSubsection.h"
      17             : #include "llvm/Support/BinaryStreamRef.h"
      18             : #include "llvm/Support/Error.h"
      19             : #include <cstdint>
      20             : 
      21             : namespace llvm {
      22             : 
      23             : class BinaryStreamReader;
      24             : 
      25             : namespace codeview {
      26             : 
      27             : /// Represents a read-only view of a CodeView string table.  This is a very
      28             : /// simple flat buffer consisting of null-terminated strings, where strings
      29             : /// are retrieved by their offset in the buffer.  DebugStringTableSubsectionRef
      30             : /// does not own the underlying storage for the buffer.
      31        1144 : class DebugStringTableSubsectionRef : public DebugSubsectionRef {
      32             : public:
      33             :   DebugStringTableSubsectionRef();
      34             : 
      35             :   static bool classof(const DebugSubsectionRef *S) {
      36             :     return S->kind() == DebugSubsectionKind::StringTable;
      37             :   }
      38             : 
      39             :   Error initialize(BinaryStreamRef Contents);
      40             :   Error initialize(BinaryStreamReader &Reader);
      41             : 
      42             :   Expected<StringRef> getString(uint32_t Offset) const;
      43             : 
      44         314 :   bool valid() const { return Stream.valid(); }
      45             : 
      46           4 :   BinaryStreamRef getBuffer() const { return Stream; }
      47             : 
      48             : private:
      49             :   BinaryStreamRef Stream;
      50             : };
      51             : 
      52             : /// Represents a read-write view of a CodeView string table.
      53             : /// DebugStringTableSubsection owns the underlying storage for the table, and is
      54             : /// capable of serializing the string table into a format understood by
      55             : /// DebugStringTableSubsectionRef.
      56         403 : class DebugStringTableSubsection : public DebugSubsection {
      57             : public:
      58             :   DebugStringTableSubsection();
      59             : 
      60             :   static bool classof(const DebugSubsection *S) {
      61             :     return S->kind() == DebugSubsectionKind::StringTable;
      62             :   }
      63             : 
      64             :   // If string S does not exist in the string table, insert it.
      65             :   // Returns the ID for S.
      66             :   uint32_t insert(StringRef S);
      67             : 
      68             :   // Return the ID for string S.  Assumes S exists in the table.
      69             :   uint32_t getStringId(StringRef S) const;
      70             : 
      71             :   uint32_t calculateSerializedSize() const override;
      72             :   Error commit(BinaryStreamWriter &Writer) const override;
      73             : 
      74             :   uint32_t size() const;
      75             : 
      76         118 :   StringMap<uint32_t>::const_iterator begin() const { return Strings.begin(); }
      77             : 
      78         118 :   StringMap<uint32_t>::const_iterator end() const { return Strings.end(); }
      79             : 
      80             : private:
      81             :   StringMap<uint32_t> Strings;
      82             :   uint32_t StringSize = 1;
      83             : };
      84             : 
      85             : } // end namespace codeview
      86             : 
      87             : } // end namespace llvm
      88             : 
      89             : #endif // LLVM_DEBUGINFO_CODEVIEW_DEBUGSTRINGTABLESUBSECTION_H

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