git.sur5r.net Git - cc65/blob - src/cc65/lineinfo.h

   1 /*****************************************************************************/
   2 /*                                                                           */
   3 /*                                lineinfo.h                                 */
   4 /*                                                                           */
   5 /*                      Source file line info structure                      */
   6 /*                                                                           */
   7 /*                                                                           */
   8 /*                                                                           */
   9 /* (C) 2001     Ullrich von Bassewitz                                        */
  10 /*              Wacholderweg 14                                              */
  11 /*              D-70597 Stuttgart                                            */
  12 /* EMail:       uz@musoftware.de                                             */
  13 /*                                                                           */
  14 /*                                                                           */
  15 /* This software is provided 'as-is', without any expressed or implied       */
  16 /* warranty.  In no event will the authors be held liable for any damages    */
  17 /* arising from the use of this software.                                    */
  18 /*                                                                           */
  19 /* Permission is granted to anyone to use this software for any purpose,     */
  20 /* including commercial applications, and to alter it and redistribute it    */
  21 /* freely, subject to the following restrictions:                            */
  22 /*                                                                           */
  23 /* 1. The origin of this software must not be misrepresented; you must not   */
  24 /*    claim that you wrote the original software. If you use this software   */
  25 /*    in a product, an acknowledgment in the product documentation would be  */
  26 /*    appreciated but is not required.                                       */
  27 /* 2. Altered source versions must be plainly marked as such, and must not   */
  28 /*    be misrepresented as being the original software.                      */
  29 /* 3. This notice may not be removed or altered from any source              */
  30 /*    distribution.                                                          */
  31 /*                                                                           */
  32 /*****************************************************************************/
  33
  34
  35
  36 #ifndef LINEINFO_H
  37 #define LINEINFO_H
  38
  39
  40
  41 /*****************************************************************************/
  42 /*                                 Forwards                                  */
  43 /*****************************************************************************/
  44
  45
  46
  47 /* Input file structure */
  48 struct IFile;
  49
  50
  51
  52 /*****************************************************************************/
  53 /*                                   Data                                    */
  54 /*****************************************************************************/
  55
  56
  57
  58 /* The text for the actual line is allocated at the end of the structure, so
  59  * the size of the structure varies.
  60  */
  61 typedef struct LineInfo LineInfo;
  62 struct LineInfo {
  63     unsigned        RefCount;             /* Reference counter */
  64     struct IFile*   InputFile;            /* Input file for this line */
  65     unsigned        LineNum;              /* Line number */
  66     char            Line[1];              /* Source code line */
  67 };
  68
  69
  70
  71 /*****************************************************************************/
  72 /*                                   Code                                    */
  73 /*****************************************************************************/
  74
  75
  76
  77 LineInfo* UseLineInfo (LineInfo* LI);
  78 /* Increase the reference count of the given line info and return it. */
  79
  80 void ReleaseLineInfo (LineInfo* LI);
  81 /* Release a reference to the given line info, free the structure if the
  82  * reference count drops to zero.
  83  */
  84
  85 LineInfo* GetCurLineInfo (void);
  86 /* Return a pointer to the current line info. The reference count is NOT
  87  * increased, use UseLineInfo for that purpose.
  88  */
  89
  90 void UpdateLineInfo (struct IFile* F, unsigned LineNum, const char* Line);
  91 /* Update the line info - called if a new line is read */
  92
  93 const char* GetInputName (const LineInfo* LI);
  94 /* Return the file name from a line info */
  95
  96 unsigned GetInputLine (const LineInfo* LI);
  97 /* Return the line number from a line info */
  98
  99
 100
 101 /* End of lineinfo.h */
 102 #endif
 103
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