git.sur5r.net Git - cc65/blob - src/ca65/istack.h

   1 /*****************************************************************************/
   2 /*                                                                           */
   3 /*                                 istack.h                                  */
   4 /*                                                                           */
   5 /*                        Input stack for the scanner                        */
   6 /*                                                                           */
   7 /*                                                                           */
   8 /*                                                                           */
   9 /* (C) 2000     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 ISTACK_H
  37 #define ISTACK_H
  38
  39
  40
  41 /*****************************************************************************/
  42 /*                                   Code                                    */
  43 /*****************************************************************************/
  44
  45
  46
  47 void PushInput (int (*Func) (void*), void* Data, const char* Desc);
  48 /* Push an input function onto the input stack */
  49
  50 void PopInput (void);
  51 /* Pop the current input function from the input stack */
  52
  53 int InputFromStack (void);
  54 /* Try to get input from the input stack. Return true if we had such input,
  55  * return false otherwise.
  56  */
  57
  58 int HavePushedInput (void);
  59 /* Return true if we have stacked input available, return false if not */
  60
  61 void CheckInputStack (void);
  62 /* Called from the scanner before closing an input file. Will check for any
  63  * stuff on the input stack.
  64  */
  65
  66
  67
  68 /* End of istack.h */
  69
  70 #endif
  71
  72
  73
  74