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SourceMgr: Add ShowLine argument to PrintMessage, to allow suppressing the source line output.

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llvm-svn: 89627
This commit is contained in:
Daniel Dunbar 2009-11-22 22:08:00 +00:00
parent 1b60708ac9
commit 11a4dce179
2 changed files with 30 additions and 20 deletions
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15
include/llvm/Support/SourceMgr.h
View File

@ -120,7 +120,9 @@ public:
///
/// @param Type - If non-null, the kind of message (e.g., "error") which is
/// prefixed to the message.
void PrintMessage(SMLoc Loc, const std::string &Msg, const char *Type) const;
/// @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
@ -128,8 +130,10 @@ public:
///
/// @param Type - If non-null, the kind of message (e.g., "error") which is
/// prefixed to the message.
/// @param ShowLine - Should the diagnostic show the source line.
SMDiagnostic GetMessage(SMLoc Loc,
const std::string &Msg, const char *Type) const;
const std::string &Msg, const char *Type,
bool ShowLine = true) const;
private:
@ -143,12 +147,15 @@ class SMDiagnostic {
std::string Filename;
int LineNo, ColumnNo;
std::string Message, LineContents;
unsigned ShowLine : 1;
public:
SMDiagnostic() : LineNo(0), ColumnNo(0) {}
SMDiagnostic(const std::string &FN, int Line, int Col,
const std::string &Msg, const std::string &LineStr)
const std::string &Msg, const std::string &LineStr,
bool showline = true)
: Filename(FN), LineNo(Line), ColumnNo(Col), Message(Msg),
LineContents(LineStr) {}
LineContents(LineStr), ShowLine(showline) {}
void Print(const char *ProgName, raw_ostream &S);
};

35
lib/Support/SourceMgr.cpp
View File

@ -136,7 +136,7 @@ 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 std::string &Msg,
const char *Type) const {
const char *Type, bool ShowLine) const {
// First thing to do: find the current buffer containing the specified
// location.
@ -144,18 +144,22 @@ SMDiagnostic SourceMgr::GetMessage(SMLoc Loc, const std::string &Msg,
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() &&
while (LineStart != CurMB->getBufferStart() &&
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')
++LineEnd;
std::string LineStr;
if (ShowLine) {
// Get the end of the line.
const char *LineEnd = Loc.getPointer();
while (LineEnd != CurMB->getBufferEnd() &&
LineEnd[0] != '\n' && LineEnd[0] != '\r')
++LineEnd;
LineStr = std::string(LineStart, LineEnd);
}
std::string PrintedMsg;
if (Type) {
@ -163,22 +167,21 @@ SMDiagnostic SourceMgr::GetMessage(SMLoc Loc, const std::string &Msg,
PrintedMsg += ": ";
}
PrintedMsg += Msg;
// Print out the line.
return SMDiagnostic(CurMB->getBufferIdentifier(), FindLineNumber(Loc, CurBuf),
Loc.getPointer()-LineStart, PrintedMsg,
std::string(LineStart, LineEnd));
LineStr, ShowLine);
}
void SourceMgr::PrintMessage(SMLoc Loc, const std::string &Msg,
const char *Type) const {
const char *Type, bool ShowLine) const {
raw_ostream &OS = errs();
int CurBuf = FindBufferContainingLoc(Loc);
assert(CurBuf != -1 && "Invalid or unspecified location!");
PrintIncludeStack(getBufferInfo(CurBuf).IncludeLoc, OS);
GetMessage(Loc, Msg, Type).Print(0, OS);
GetMessage(Loc, Msg, Type, ShowLine).Print(0, OS);
}
//===----------------------------------------------------------------------===//
@ -201,8 +204,8 @@ void SMDiagnostic::Print(const char *ProgName, raw_ostream &S) {
}
S << ": " << Message << '\n';
if (LineNo != -1 && ColumnNo != -1) {
if (LineNo != -1 && ColumnNo != -1 && ShowLine) {
S << LineContents << '\n';
// Print out spaces/tabs before the caret.