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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94671 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Mikhail Glushenkov 2010-01-27 10:13:11 +00:00
parent bc15f242d5
commit e690ffbe6d
2 changed files with 38 additions and 38 deletions
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38
include/llvm/Support/SourceMgr.h
View File

@ -34,33 +34,33 @@ class SourceMgr {
struct SrcBuffer {
/// Buffer - The memory buffer for the file.
MemoryBuffer *Buffer;
/// IncludeLoc - This is the location of the parent include, or null if at
/// the top level.
SMLoc IncludeLoc;
};
/// Buffers - This is all of the buffers that we are reading from.
std::vector<SrcBuffer> Buffers;
// IncludeDirectories - This is the list of directories we should search for
// include files in.
std::vector<std::string> IncludeDirectories;
/// LineNoCache - This is a cache for line number queries, its implementation
/// is really private to SourceMgr.cpp.
mutable void *LineNoCache;
SourceMgr(const SourceMgr&); // DO NOT IMPLEMENT
void operator=(const SourceMgr&); // DO NOT IMPLEMENT
public:
SourceMgr() : LineNoCache(0) {}
~SourceMgr();
void setIncludeDirs(const std::vector<std::string> &Dirs) {
IncludeDirectories = Dirs;
}
const SrcBuffer &getBufferInfo(unsigned i) const {
assert(i < Buffers.size() && "Invalid Buffer ID!");
return Buffers[i];
@ -70,12 +70,12 @@ public:
assert(i < Buffers.size() && "Invalid Buffer ID!");
return Buffers[i].Buffer;
}
SMLoc getParentIncludeLoc(unsigned i) const {
assert(i < Buffers.size() && "Invalid Buffer ID!");
return Buffers[i].IncludeLoc;
}
unsigned AddNewSourceBuffer(MemoryBuffer *F, SMLoc IncludeLoc) {
SrcBuffer NB;
NB.Buffer = F;
@ -83,20 +83,20 @@ public:
Buffers.push_back(NB);
return Buffers.size()-1;
}
/// AddIncludeFile - Search for a file with the specified name in the current
/// directory or in one of the IncludeDirs. If no file is found, this returns
/// ~0, otherwise it returns the buffer ID of the stacked file.
unsigned AddIncludeFile(const std::string &Filename, SMLoc IncludeLoc);
/// FindBufferContainingLoc - Return the ID of the buffer containing the
/// specified location, returning -1 if not found.
int FindBufferContainingLoc(SMLoc Loc) const;
/// FindLineNumber - Find the line number for the specified location in the
/// specified file. This is not a fast method.
unsigned FindLineNumber(SMLoc Loc, int BufferID = -1) const;
/// PrintMessage - Emit a message about the specified location with the
/// specified string.
///
@ -105,8 +105,8 @@ public:
/// @param ShowLine - Should the diagnostic show the source line.
void PrintMessage(SMLoc Loc, const std::string &Msg, const char *Type,
bool ShowLine = true) const;
/// GetMessage - Return an SMDiagnostic at the specified location with the
/// specified string.
///
@ -116,13 +116,13 @@ public:
SMDiagnostic GetMessage(SMLoc Loc,
const std::string &Msg, const char *Type,
bool ShowLine = true) const;
private:
void PrintIncludeStack(SMLoc IncludeLoc, raw_ostream &OS) const;
};
/// SMDiagnostic - Instances of this class encapsulate one diagnostic report,
/// allowing printing to a raw_ostream as a caret diagnostic.
class SMDiagnostic {
@ -141,7 +141,7 @@ public:
void Print(const char *ProgName, raw_ostream &S);
};
} // end llvm namespace
#endif

38
lib/Support/SourceMgr.cpp
View File

@ -35,7 +35,7 @@ SourceMgr::~SourceMgr() {
// Delete the line # cache if allocated.
if (LineNoCacheTy *Cache = getCache(LineNoCache))
delete Cache;
while (!Buffers.empty()) {
delete Buffers.back().Buffer;
Buffers.pop_back();
@ -47,7 +47,7 @@ SourceMgr::~SourceMgr() {
/// ~0, otherwise it returns the buffer ID of the stacked file.
unsigned SourceMgr::AddIncludeFile(const std::string &Filename,
SMLoc IncludeLoc) {
MemoryBuffer *NewBuf = MemoryBuffer::getFile(Filename.c_str());
// If the file didn't exist directly, see if it's in an include path.
@ -55,7 +55,7 @@ unsigned SourceMgr::AddIncludeFile(const std::string &Filename,
std::string IncFile = IncludeDirectories[i] + "/" + Filename;
NewBuf = MemoryBuffer::getFile(IncFile.c_str());
}
if (NewBuf == 0) return ~0U;
return AddNewSourceBuffer(NewBuf, IncludeLoc);
@ -79,20 +79,20 @@ int SourceMgr::FindBufferContainingLoc(SMLoc Loc) const {
unsigned SourceMgr::FindLineNumber(SMLoc Loc, int BufferID) const {
if (BufferID == -1) BufferID = FindBufferContainingLoc(Loc);
assert(BufferID != -1 && "Invalid Location!");
MemoryBuffer *Buff = getBufferInfo(BufferID).Buffer;
// Count the number of \n's between the start of the file and the specified
// location.
unsigned LineNo = 1;
const char *Ptr = Buff->getBufferStart();
// If we have a line number cache, and if the query is to a later point in the
// same file, start searching from the last query location. This optimizes
// for the case when multiple diagnostics come out of one file in order.
if (LineNoCacheTy *Cache = getCache(LineNoCache))
if (Cache->LastQueryBufferID == BufferID &&
if (Cache->LastQueryBufferID == BufferID &&
Cache->LastQuery <= Loc.getPointer()) {
Ptr = Cache->LastQuery;
LineNo = Cache->LineNoOfQuery;
@ -102,12 +102,12 @@ unsigned SourceMgr::FindLineNumber(SMLoc Loc, int BufferID) const {
// we see.
for (; SMLoc::getFromPointer(Ptr) != Loc; ++Ptr)
if (*Ptr == '\n') ++LineNo;
// Allocate the line number cache if it doesn't exist.
if (LineNoCache == 0)
LineNoCache = new LineNoCacheTy();
// Update the line # cache.
LineNoCacheTy &Cache = *getCache(LineNoCache);
Cache.LastQueryBufferID = BufferID;
@ -118,12 +118,12 @@ unsigned SourceMgr::FindLineNumber(SMLoc Loc, int BufferID) const {
void SourceMgr::PrintIncludeStack(SMLoc IncludeLoc, raw_ostream &OS) const {
if (IncludeLoc == SMLoc()) return; // Top of stack.
int CurBuf = FindBufferContainingLoc(IncludeLoc);
assert(CurBuf != -1 && "Invalid or unspecified location!");
PrintIncludeStack(getBufferInfo(CurBuf).IncludeLoc, OS);
OS << "Included from "
<< getBufferInfo(CurBuf).Buffer->getBufferIdentifier()
<< ":" << FindLineNumber(IncludeLoc, CurBuf) << ":\n";
@ -137,12 +137,12 @@ void SourceMgr::PrintIncludeStack(SMLoc IncludeLoc, raw_ostream &OS) const {
/// prefixed to the message.
SMDiagnostic SourceMgr::GetMessage(SMLoc Loc, const std::string &Msg,
const char *Type, bool ShowLine) const {
// First thing to do: find the current buffer containing the specified
// location.
int CurBuf = FindBufferContainingLoc(Loc);
assert(CurBuf != -1 && "Invalid or unspecified location!");
MemoryBuffer *CurMB = getBufferInfo(CurBuf).Buffer;
// Scan backward to find the start of the line.
@ -160,7 +160,7 @@ SMDiagnostic SourceMgr::GetMessage(SMLoc Loc, const std::string &Msg,
++LineEnd;
LineStr = std::string(LineStart, LineEnd);
}
std::string PrintedMsg;
if (Type) {
PrintedMsg = Type;
@ -173,7 +173,7 @@ SMDiagnostic SourceMgr::GetMessage(SMLoc Loc, const std::string &Msg,
LineStr, ShowLine);
}
void SourceMgr::PrintMessage(SMLoc Loc, const std::string &Msg,
void SourceMgr::PrintMessage(SMLoc Loc, const std::string &Msg,
const char *Type, bool ShowLine) const {
raw_ostream &OS = errs();
@ -197,7 +197,7 @@ void SMDiagnostic::Print(const char *ProgName, raw_ostream &S) {
S << "<stdin>";
else
S << Filename;
if (LineNo != -1) {
S << ':' << LineNo;
if (ColumnNo != -1)
@ -205,12 +205,12 @@ void SMDiagnostic::Print(const char *ProgName, raw_ostream &S) {
}
S << ": ";
}
S << Message << '\n';
if (LineNo != -1 && ColumnNo != -1 && ShowLine) {
S << LineContents << '\n';
// Print out spaces/tabs before the caret.
for (unsigned i = 0; i != unsigned(ColumnNo); ++i)
S << (LineContents[i] == '\t' ? '\t' : ' ');