//
//===----------------------------------------------------------------------===//
//
-// This file declares the SMLoc, SMDiagnostic and SourceMgr classes. This
+// This file declares the SMDiagnostic and SourceMgr classes. This
// provides a simple substrate for diagnostics, #include handling, and other low
// level things for simple parsers.
//
#ifndef SUPPORT_SOURCEMGR_H
#define SUPPORT_SOURCEMGR_H
+#include "llvm/Support/SMLoc.h"
+
#include <string>
#include <vector>
#include <cassert>
class SourceMgr;
class SMDiagnostic;
class raw_ostream;
-
-class SMLoc {
- const char *Ptr;
-public:
- SMLoc() : Ptr(0) {}
- SMLoc(const SMLoc &RHS) : Ptr(RHS.Ptr) {}
-
- bool isValid() const { return Ptr != 0; }
-
- bool operator==(const SMLoc &RHS) const { return RHS.Ptr == Ptr; }
- bool operator!=(const SMLoc &RHS) const { return RHS.Ptr != Ptr; }
-
- const char *getPointer() const { return Ptr; }
-
- static SMLoc getFromPointer(const char *Ptr) {
- SMLoc L;
- L.Ptr = Ptr;
- return L;
- }
-};
/// SourceMgr - This owns the files read by a parser, handles include stacks,
/// and handles diagnostic wrangling.
class SourceMgr {
+public:
+ /// DiagHandlerTy - Clients that want to handle their own diagnostics in a
+ /// custom way can register a function pointer+context as a diagnostic
+ /// handler. It gets called each time PrintMessage is invoked.
+ typedef void (*DiagHandlerTy)(const SMDiagnostic&, void *Context,
+ unsigned LocCookie);
+private:
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;
+
+ DiagHandlerTy DiagHandler;
+ void *DiagContext;
+ unsigned DiagLocCookie;
SourceMgr(const SourceMgr&); // DO NOT IMPLEMENT
void operator=(const SourceMgr&); // DO NOT IMPLEMENT
public:
- SourceMgr() : LineNoCache(0) {}
+ SourceMgr() : LineNoCache(0), DiagHandler(0), DiagContext(0) {}
~SourceMgr();
-
+
void setIncludeDirs(const std::vector<std::string> &Dirs) {
IncludeDirectories = Dirs;
}
-
+
+ /// setDiagHandler - Specify a diagnostic handler to be invoked every time
+ /// PrintMessage is called. Ctx and Cookie are passed into the handler when
+ /// it is invoked.
+ void setDiagHandler(DiagHandlerTy DH, void *Ctx = 0, unsigned Cookie = 0) {
+ DiagHandler = DH;
+ DiagContext = Ctx;
+ DiagLocCookie = Cookie;
+ }
+
const SrcBuffer &getBufferInfo(unsigned i) const {
assert(i < Buffers.size() && "Invalid Buffer ID!");
return Buffers[i];
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;
}
-
+
+ /// AddNewSourceBuffer - Add a new source buffer to this source manager. This
+ /// takes ownership of the memory buffer.
unsigned AddNewSourceBuffer(MemoryBuffer *F, SMLoc IncludeLoc) {
SrcBuffer NB;
NB.Buffer = F;
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.
///
/// @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
/// specified string.
///
/// @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:
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 {
+ const SourceMgr *SM;
+ SMLoc Loc;
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)
- : Filename(FN), LineNo(Line), ColumnNo(Col), Message(Msg),
- LineContents(LineStr) {}
+ // Null diagnostic.
+ SMDiagnostic() : SM(0), LineNo(0), ColumnNo(0), ShowLine(0) {}
+ // Diagnostic with no location (e.g. file not found, command line arg error).
+ SMDiagnostic(const std::string &filename, const std::string &Msg,
+ bool showline = true)
+ : SM(0), Loc(), Filename(filename), LineNo(-1), ColumnNo(-1),
+ Message(Msg), LineContents(""), ShowLine(showline) {}
+
+ // Diagnostic with a location.
+ SMDiagnostic(const SourceMgr &sm, SMLoc L, const std::string &FN,
+ int Line, int Col,
+ const std::string &Msg, const std::string &LineStr,
+ bool showline = true)
+ : SM(&sm), Loc(L), Filename(FN), LineNo(Line), ColumnNo(Col), Message(Msg),
+ LineContents(LineStr), ShowLine(showline) {}
- void Print(const char *ProgName, raw_ostream &S);
+ const SourceMgr *getSourceMgr() const { return SM; }
+ SMLoc getLoc() const { return Loc; }
+ const std::string &getFilename() { return Filename; }
+ int getLineNo() const { return LineNo; }
+ int getColumnNo() const { return ColumnNo; }
+ const std::string &getMessage() const { return Message; }
+ const std::string &getLineContents() const { return LineContents; }
+ bool getShowLine() const { return ShowLine; }
+
+ void Print(const char *ProgName, raw_ostream &S) const;
};
-
+
} // end llvm namespace
#endif
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