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

   1 /*****************************************************************************/
   2 /*                                                                           */
   3 /*                                 declare.h                                 */
   4 /*                                                                           */
   5 /*                 Parse variable and function declarations                  */
   6 /*                                                                           */
   7 /*                                                                           */
   8 /*                                                                           */
   9 /* (C) 1998-2008 Ullrich von Bassewitz                                       */
  10 /*               Roemerstrasse 52                                            */
  11 /*               D-70794 Filderstadt                                         */
  12 /* EMail:        uz@cc65.org                                                 */
  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 DECLARE_H
  37 #define DECLARE_H
  38
  39
  40
  41 /* cc65 */
  42 #include "scanner.h"
  43 #include "symtab.h"
  44
  45
  46
  47 /*****************************************************************************/
  48 /*                                   Data                                    */
  49 /*****************************************************************************/
  50
  51
  52
  53 /* Masks for the Flags field in DeclSpec */
  54 #define DS_DEF_STORAGE          0x0001U /* Default storage class used   */
  55 #define DS_DEF_TYPE             0x0002U /* Default type used            */
  56 #define DS_EXTRA_TYPE           0x0004U /* Extra type declared          */
  57
  58 /* Result of ParseDeclSpec */
  59 typedef struct DeclSpec DeclSpec;
  60 struct DeclSpec {
  61     unsigned    StorageClass;           /* One of the SC_xxx flags      */
  62     Type        Type[MAXTYPELEN];       /* Type of the declaration spec */
  63     unsigned    Flags;                  /* Bitmapped flags              */
  64 };
  65
  66 /* Result of ParseDecl */
  67 typedef struct Declaration Declaration;
  68 struct Declaration {
  69     unsigned    StorageClass;           /* A set of SC_xxx flags */
  70     Type        Type[MAXTYPELEN];       /* The type */
  71     ident       Ident;                  /* The identifier if any, else empty */
  72
  73     /* Working variables */
  74     unsigned    Index;                  /* Used to build Type */
  75 };
  76
  77 /* Modes for ParseDecl */
  78 typedef enum {
  79     DM_NEED_IDENT,                      /* We must have an identifier */
  80     DM_NO_IDENT,                        /* We won't read an identifier */
  81     DM_ACCEPT_IDENT,                    /* We will accept an id if there is one */
  82 } declmode_t;
  83
  84
  85
  86 /*****************************************************************************/
  87 /*                                   Code                                    */
  88 /*****************************************************************************/
  89
  90
  91
  92 Type* ParseType (Type* Type);
  93 /* Parse a complete type specification */
  94
  95 void ParseDecl (const DeclSpec* Spec, Declaration* D, declmode_t Mode);
  96 /* Parse a variable, type or function declaration */
  97
  98 void ParseDeclSpec (DeclSpec* D, unsigned DefStorage, long DefType);
  99 /* Parse a declaration specification */
 100
 101 void CheckEmptyDecl (const DeclSpec* D);
 102 /* Called after an empty type declaration (that is, a type declaration without
 103  * a variable). Checks if the declaration does really make sense and issues a
 104  * warning if not.
 105  */
 106
 107 unsigned ParseInit (Type* T);
 108 /* Parse initialization of variables. Return the number of initialized data
 109  * bytes.
 110  */
 111
 112
 113
 114 /* End of declare.h */
 115
 116 #endif
 117
 118
 119