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//===-- llvm/CodeGen/MachineDebugInfo.h -------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by James M. Laskey and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Collect debug information for a module. This information should be in a
// neutral form that can be used by different debugging schemes.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CODEGEN_MACHINEDEBUGINFO_H
#define LLVM_CODEGEN_MACHINEDEBUGINFO_H
#include <string>
#include <map>
#include <vector>
namespace llvm {
//===----------------------------------------------------------------------===//
/// MachineDebugInfo - This class contains debug information specific to a
/// module. Queries can be made by different debugging schemes and reformated
/// for specific use.
///
class MachineDebugInfo {
private:
// convenience types
typedef std::map<std::string, unsigned> StrIntMap;
typedef StrIntMap::iterator StrIntMapIter;
StrIntMap SourceMap; // Map of source file path to id
unsigned SourceCount; // Number of source files (used to
// generate id)
public:
// Ctor.
MachineDebugInfo() : SourceMap(), SourceCount(0) {}
/// RecordSource - Register a source file with debug info. Returns an id.
///
unsigned RecordSource(std::string fname, std::string dirname) {
// Compose a key
std::string path = dirname + "/" + fname;
// Check if the source file is already recorded
StrIntMapIter SMI = SourceMap.find(path);
// If already there return existing id
if (SMI != SourceMap.end()) return SMI->second;
// Bump up the count
++SourceCount;
// Record the count
SourceMap[path] = SourceCount;
// Return id
return SourceCount;
}
/// getSourceFiles - Return a vector of files. Vector index + 1 equals id.
///
std::vector<std::string> getSourceFiles() {
std::vector<std::string> Sources(SourceCount);
for (StrIntMapIter SMI = SourceMap.begin(), E = SourceMap.end(); SMI != E;
SMI++) {
unsigned Index = SMI->second - 1;
std::string Path = SMI->first;
Sources[Index] = Path;
}
return Sources;
}
}; // End class MachineDebugInfo
//===----------------------------------------------------------------------===//
} // End llvm namespace
#endif
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