//
//===----------------------------------------------------------------------===//
-#include "llvm/ADT/Twine.h"
#include "llvm/Support/SourceMgr.h"
-#include "llvm/Support/MemoryBuffer.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;
return -1;
}
-/// FindLineNumber - Find the line number for the specified location in the
-/// specified file. This is not a fast method.
-unsigned SourceMgr::FindLineNumber(SMLoc 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!");
// location.
unsigned LineNo = 1;
- const char *Ptr = Buff->getBufferStart();
+ 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 (; 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();
Cache.LastQueryBufferID = BufferID;
Cache.LastQuery = Ptr;
Cache.LineNoOfQuery = LineNo;
- return 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 {
///
/// @param Type - If non-null, the kind of message (e.g., "error") which is
/// prefixed to the message.
-SMDiagnostic SourceMgr::GetMessage(SMLoc Loc, const Twine &Msg,
- const char *Type, bool ShowLine) const {
+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(Loc);
- assert(CurBuf != -1 && "Invalid or unspecified location!");
-
- MemoryBuffer *CurMB = getBufferInfo(CurBuf).Buffer;
-
- // Scan backward to find the start of the line.
- const char *LineStart = Loc.getPointer();
- while (LineStart != CurMB->getBufferStart() &&
- LineStart[-1] != '\n' && LineStart[-1] != '\r')
- --LineStart;
-
+ // 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;
- if (ShowLine) {
+
+ 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();
- while (LineEnd != CurMB->getBufferEnd() &&
- LineEnd[0] != '\n' && LineEnd[0] != '\r')
+ const char *BufEnd = CurMB->getBufferEnd();
+ while (LineEnd != BufEnd && LineEnd[0] != '\n' && LineEnd[0] != '\r')
++LineEnd;
LineStr = std::string(LineStart, LineEnd);
- }
- std::string PrintedMsg;
- raw_string_ostream OS(PrintedMsg);
- if (Type)
- OS << Type << ": ";
- OS << Msg;
+ // 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));
+ }
- return SMDiagnostic(*this, Loc,
- CurMB->getBufferIdentifier(), FindLineNumber(Loc, CurBuf),
- Loc.getPointer()-LineStart, OS.str(),
- LineStr, ShowLine);
+ LineAndCol = getLineAndColumn(Loc, CurBuf);
+ }
+
+ return SMDiagnostic(*this, Loc, BufferID, LineAndCol.first,
+ LineAndCol.second-1, Kind, Msg.str(),
+ LineStr, ColRanges);
}
-void SourceMgr::PrintMessage(SMLoc Loc, const Twine &Msg,
- const char *Type, bool ShowLine) const {
+void SourceMgr::PrintMessage(SMLoc Loc, SourceMgr::DiagKind Kind,
+ const Twine &Msg, ArrayRef<SMRange> Ranges,
+ bool ShowColors) const {
+ SMDiagnostic Diagnostic = GetMessage(Loc, Kind, Msg, Ranges);
+
// Report the message with the diagnostic handler if present.
if (DiagHandler) {
- DiagHandler(GetMessage(Loc, Msg, Type, ShowLine), DiagContext);
+ DiagHandler(Diagnostic, DiagContext);
return;
}
raw_ostream &OS = errs();
- int CurBuf = FindBufferContainingLoc(Loc);
- assert(CurBuf != -1 && "Invalid or unspecified location!");
- PrintIncludeStack(getBufferInfo(CurBuf).IncludeLoc, OS);
+ if (Loc != SMLoc()) {
+ int CurBuf = FindBufferContainingLoc(Loc);
+ assert(CurBuf != -1 && "Invalid or unspecified location!");
+ PrintIncludeStack(getBufferInfo(CurBuf).IncludeLoc, OS);
+ }
- GetMessage(Loc, Msg, Type, ShowLine).Print(0, OS);
+ Diagnostic.print(0, OS, ShowColors);
}
//===----------------------------------------------------------------------===//
// SMDiagnostic Implementation
//===----------------------------------------------------------------------===//
-void SMDiagnostic::Print(const char *ProgName, raw_ostream &S) const {
+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 << ": ";
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 (LineNo != -1 && ColumnNo != -1 && ShowLine) {
- S << LineContents << '\n';
+ if (ShowColors)
+ S.resetColor();
- // Print out spaces/tabs before the caret.
- for (unsigned i = 0; i != unsigned(ColumnNo); ++i)
- S << (LineContents[i] == '\t' ? '\t' : ' ');
- S << "^\n";
+ 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())+1; i != e; ++i)
+ CaretLine[i] = '~';
}
-}
+
+ // Finally, plop on the caret.
+ if (unsigned(ColumnNo) <= LineContents.size())
+ CaretLine[ColumnNo] = '^';
+ else
+ CaretLine[LineContents.size()] = '^';
+
+ // ... 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);
+
+ // 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();
+
+ S << '\n';
+}
projects / oota-llvm.git / blobdiff