//===----------------------------------------------------------------------===//
#include "llvm/Support/SourceMgr.h"
+#include "llvm/ADT/OwningPtr.h"
+#include "llvm/ADT/Twine.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/raw_ostream.h"
+#include "llvm/Support/system_error.h"
using namespace llvm;
-TGSourceMgr::~TGSourceMgr() {
+namespace {
+ struct LineNoCacheTy {
+ int LastQueryBufferID;
+ const char *LastQuery;
+ unsigned LineNoOfQuery;
+ };
+}
+
+static LineNoCacheTy *getCache(void *Ptr) {
+ return (LineNoCacheTy*)Ptr;
+}
+
+
+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();
}
}
+/// 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 SourceMgr::AddIncludeFile(const std::string &Filename,
+ SMLoc IncludeLoc,
+ std::string &IncludedFile) {
+ OwningPtr<MemoryBuffer> NewBuf;
+ IncludedFile = Filename;
+ MemoryBuffer::getFile(IncludedFile.c_str(), NewBuf);
+
+ // If the file didn't exist directly, see if it's in an include path.
+ for (unsigned i = 0, e = IncludeDirectories.size(); i != e && !NewBuf; ++i) {
+ IncludedFile = IncludeDirectories[i] + "/" + Filename;
+ MemoryBuffer::getFile(IncludedFile.c_str(), NewBuf);
+ }
+
+ if (NewBuf == 0) return ~0U;
+
+ return AddNewSourceBuffer(NewBuf.take(), IncludeLoc);
+}
+
+
/// FindBufferContainingLoc - Return the ID of the buffer containing the
/// specified location, returning -1 if not found.
-int TGSourceMgr::FindBufferContainingLoc(TGLoc Loc) const {
+int SourceMgr::FindBufferContainingLoc(SMLoc Loc) const {
for (unsigned i = 0, e = Buffers.size(); i != e; ++i)
if (Loc.getPointer() >= Buffers[i].Buffer->getBufferStart() &&
// Use <= here so that a pointer to the null at the end of the buffer
return -1;
}
-/// FindLineNumber - Find the line number for the specified location in the
-/// specified file. This is not a fast method.
-unsigned TGSourceMgr::FindLineNumber(TGLoc Loc, int BufferID) const {
+/// getLineAndColumn - Find the line and column number for the specified
+/// location in the specified file. This is not a fast method.
+std::pair<unsigned, unsigned>
+SourceMgr::getLineAndColumn(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();
- for (; TGLoc::getFromPointer(Ptr) != Loc; ++Ptr)
+ const char *BufStart = Buff->getBufferStart();
+ const char *Ptr = BufStart;
+
+ // 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 &&
+ Cache->LastQuery <= Loc.getPointer()) {
+ Ptr = Cache->LastQuery;
+ LineNo = Cache->LineNoOfQuery;
+ }
+
+ // Scan for the location being queried, keeping track of the number of lines
+ // we see.
+ for (; SMLoc::getFromPointer(Ptr) != Loc; ++Ptr)
if (*Ptr == '\n') ++LineNo;
- return LineNo;
-}
-void TGSourceMgr::PrintIncludeStack(TGLoc IncludeLoc) const {
- if (IncludeLoc == TGLoc()) return; // Top of stack.
+ // 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;
+ Cache.LastQuery = Ptr;
+ Cache.LineNoOfQuery = LineNo;
+ size_t NewlineOffs = StringRef(BufStart, Ptr-BufStart).find_last_of("\n\r");
+ if (NewlineOffs == StringRef::npos) NewlineOffs = ~(size_t)0;
+ return std::make_pair(LineNo, Ptr-BufStart-NewlineOffs);
+}
+
+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);
-
- errs() << "Included from "
- << getBufferInfo(CurBuf).Buffer->getBufferIdentifier()
- << ":" << FindLineNumber(IncludeLoc, CurBuf) << ":\n";
+ PrintIncludeStack(getBufferInfo(CurBuf).IncludeLoc, OS);
+
+ OS << "Included from "
+ << getBufferInfo(CurBuf).Buffer->getBufferIdentifier()
+ << ":" << FindLineNumber(IncludeLoc, CurBuf) << ":\n";
}
-void TGSourceMgr::PrintError(TGLoc ErrorLoc, const std::string &Msg) const {
- raw_ostream &OS = errs();
-
+/// GetMessage - Return an SMDiagnostic at the specified location with the
+/// specified string.
+///
+/// @param Type - If non-null, the kind of message (e.g., "error") which is
+/// prefixed to the message.
+SMDiagnostic SourceMgr::GetMessage(SMLoc Loc, SourceMgr::DiagKind Kind,
+ const Twine &Msg,
+ ArrayRef<SMRange> Ranges) const {
+
// First thing to do: find the current buffer containing the specified
- // location.
- int CurBuf = FindBufferContainingLoc(ErrorLoc);
- assert(CurBuf != -1 && "Invalid or unspecified location!");
+ // location to pull out the source line.
+ SmallVector<std::pair<unsigned, unsigned>, 4> ColRanges;
+ std::pair<unsigned, unsigned> LineAndCol;
+ const char *BufferID = "<unknown>";
+ std::string LineStr;
- PrintIncludeStack(getBufferInfo(CurBuf).IncludeLoc);
+ if (Loc.isValid()) {
+ int CurBuf = FindBufferContainingLoc(Loc);
+ assert(CurBuf != -1 && "Invalid or unspecified location!");
+
+ MemoryBuffer *CurMB = getBufferInfo(CurBuf).Buffer;
+ BufferID = CurMB->getBufferIdentifier();
+
+ // Scan backward to find the start of the line.
+ const char *LineStart = Loc.getPointer();
+ const char *BufStart = CurMB->getBufferStart();
+ while (LineStart != BufStart && LineStart[-1] != '\n' &&
+ LineStart[-1] != '\r')
+ --LineStart;
+
+ // Get the end of the line.
+ const char *LineEnd = Loc.getPointer();
+ const char *BufEnd = CurMB->getBufferEnd();
+ while (LineEnd != BufEnd && LineEnd[0] != '\n' && LineEnd[0] != '\r')
+ ++LineEnd;
+ LineStr = std::string(LineStart, LineEnd);
+
+ // Convert any ranges to column ranges that only intersect the line of the
+ // location.
+ for (unsigned i = 0, e = Ranges.size(); i != e; ++i) {
+ SMRange R = Ranges[i];
+ if (!R.isValid()) continue;
+
+ // If the line doesn't contain any part of the range, then ignore it.
+ if (R.Start.getPointer() > LineEnd || R.End.getPointer() < LineStart)
+ continue;
+
+ // Ignore pieces of the range that go onto other lines.
+ if (R.Start.getPointer() < LineStart)
+ R.Start = SMLoc::getFromPointer(LineStart);
+ if (R.End.getPointer() > LineEnd)
+ R.End = SMLoc::getFromPointer(LineEnd);
+
+ // Translate from SMLoc ranges to column ranges.
+ ColRanges.push_back(std::make_pair(R.Start.getPointer()-LineStart,
+ R.End.getPointer()-LineStart));
+ }
+
+ LineAndCol = getLineAndColumn(Loc, CurBuf);
+ }
+
+ return SMDiagnostic(*this, Loc, BufferID, LineAndCol.first,
+ LineAndCol.second-1, Kind, Msg.str(),
+ LineStr, ColRanges);
+}
+
+void SourceMgr::PrintMessage(SMLoc Loc, SourceMgr::DiagKind Kind,
+ const Twine &Msg, ArrayRef<SMRange> Ranges,
+ bool ShowColors) const {
+ SMDiagnostic Diagnostic = GetMessage(Loc, Kind, Msg, Ranges);
- MemoryBuffer *CurMB = getBufferInfo(CurBuf).Buffer;
+ // Report the message with the diagnostic handler if present.
+ if (DiagHandler) {
+ DiagHandler(Diagnostic, DiagContext);
+ return;
+ }
+
+ raw_ostream &OS = errs();
+
+ if (Loc != SMLoc()) {
+ int CurBuf = FindBufferContainingLoc(Loc);
+ assert(CurBuf != -1 && "Invalid or unspecified location!");
+ PrintIncludeStack(getBufferInfo(CurBuf).IncludeLoc, OS);
+ }
+
+ Diagnostic.print(0, OS, ShowColors);
+}
+
+//===----------------------------------------------------------------------===//
+// SMDiagnostic Implementation
+//===----------------------------------------------------------------------===//
+
+SMDiagnostic::SMDiagnostic(const SourceMgr &sm, SMLoc L, const std::string &FN,
+ int Line, int Col, SourceMgr::DiagKind Kind,
+ const std::string &Msg,
+ const std::string &LineStr,
+ ArrayRef<std::pair<unsigned,unsigned> > Ranges)
+ : SM(&sm), Loc(L), Filename(FN), LineNo(Line), ColumnNo(Col), Kind(Kind),
+ Message(Msg), LineContents(LineStr), Ranges(Ranges.vec()) {
+}
+
+
+void SMDiagnostic::print(const char *ProgName, raw_ostream &S,
+ bool ShowColors) const {
+ // Display colors only if OS supports colors.
+ ShowColors &= S.has_colors();
+
+ if (ShowColors)
+ S.changeColor(raw_ostream::SAVEDCOLOR, true);
+
+ if (ProgName && ProgName[0])
+ S << ProgName << ": ";
+
+ if (!Filename.empty()) {
+ if (Filename == "-")
+ S << "<stdin>";
+ else
+ S << Filename;
+
+ if (LineNo != -1) {
+ S << ':' << LineNo;
+ if (ColumnNo != -1)
+ S << ':' << (ColumnNo+1);
+ }
+ S << ": ";
+ }
+
+ switch (Kind) {
+ case SourceMgr::DK_Error:
+ if (ShowColors)
+ S.changeColor(raw_ostream::RED, true);
+ S << "error: ";
+ break;
+ case SourceMgr::DK_Warning:
+ if (ShowColors)
+ S.changeColor(raw_ostream::MAGENTA, true);
+ S << "warning: ";
+ break;
+ case SourceMgr::DK_Note:
+ if (ShowColors)
+ S.changeColor(raw_ostream::BLACK, true);
+ S << "note: ";
+ break;
+ }
+
+ if (ShowColors) {
+ S.resetColor();
+ S.changeColor(raw_ostream::SAVEDCOLOR, true);
+ }
+
+ S << Message << '\n';
+
+ if (ShowColors)
+ S.resetColor();
+
+ if (LineNo == -1 || ColumnNo == -1)
+ return;
+
+ // Build the line with the caret and ranges.
+ std::string CaretLine(LineContents.size()+1, ' ');
+ // Expand any ranges.
+ for (unsigned r = 0, e = Ranges.size(); r != e; ++r) {
+ std::pair<unsigned, unsigned> R = Ranges[r];
+ for (unsigned i = R.first,
+ e = std::min(R.second, (unsigned)LineContents.size()); i != e; ++i)
+ CaretLine[i] = '~';
+ }
+
+ // Finally, plop on the caret.
+ if (unsigned(ColumnNo) <= LineContents.size())
+ CaretLine[ColumnNo] = '^';
+ else
+ CaretLine[LineContents.size()] = '^';
- OS << "Parsing " << CurMB->getBufferIdentifier() << ":"
- << FindLineNumber(ErrorLoc, CurBuf) << ": ";
+ // ... and remove trailing whitespace so the output doesn't wrap for it. We
+ // know that the line isn't completely empty because it has the caret in it at
+ // least.
+ CaretLine.erase(CaretLine.find_last_not_of(' ')+1);
- OS << Msg << "\n";
+ // Print out the source line one character at a time, so we can expand tabs.
+ for (unsigned i = 0, e = LineContents.size(), OutCol = 0; i != e; ++i) {
+ if (LineContents[i] != '\t') {
+ S << LineContents[i];
+ ++OutCol;
+ continue;
+ }
+
+ // If we have a tab, emit at least one space, then round up to 8 columns.
+ do {
+ S << ' ';
+ ++OutCol;
+ } while (OutCol & 7);
+ }
+ S << '\n';
+
+ if (ShowColors)
+ S.changeColor(raw_ostream::GREEN, true);
+
+ // Print out the caret line, matching tabs in the source line.
+ for (unsigned i = 0, e = CaretLine.size(), OutCol = 0; i != e; ++i) {
+ if (i >= LineContents.size() || LineContents[i] != '\t') {
+ S << CaretLine[i];
+ ++OutCol;
+ continue;
+ }
+
+ // Okay, we have a tab. Insert the appropriate number of characters.
+ do {
+ S << CaretLine[i];
+ ++OutCol;
+ } while (OutCol & 7);
+ }
+
+ if (ShowColors)
+ S.resetColor();
- // Scan backward to find the start of the line.
- const char *LineStart = ErrorLoc.getPointer();
- while (LineStart != CurMB->getBufferStart() &&
- LineStart[-1] != '\n' && LineStart[-1] != '\r')
- --LineStart;
- // Get the end of the line.
- const char *LineEnd = ErrorLoc.getPointer();
- while (LineEnd != CurMB->getBufferEnd() &&
- LineEnd[0] != '\n' && LineEnd[0] != '\r')
- ++LineEnd;
- // Print out the line.
- OS << std::string(LineStart, LineEnd) << "\n";
- // Print out spaces before the caret.
- for (const char *Pos = LineStart; Pos != ErrorLoc.getPointer(); ++Pos)
- OS << (*Pos == '\t' ? '\t' : ' ');
- OS << "^\n";
+ S << '\n';
}
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