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   1 /*****************************************************************************/
   2 /*                                                                           */
   3 /*                                 declare.h                                 */
   4 /*                                                                           */
   5 /*                 Parse variable and function declarations                  */
   6 /*                                                                           */
   7 /*                                                                           */
   8 /*                                                                           */
   9 /* (C) 1998-2009, 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 /* common */
  42 #include "coll.h"
  43
  44 /* cc65 */
  45 #include "scanner.h"
  46 #include "symtab.h"
  47
  48
  49
  50 /*****************************************************************************/
  51 /*                                   Data                                    */
  52 /*****************************************************************************/
  53
  54
  55
  56 /* Masks for the Flags field in DeclSpec */
  57 #define DS_DEF_STORAGE          0x0001U /* Default storage class used   */
  58 #define DS_DEF_TYPE             0x0002U /* Default type used            */
  59 #define DS_EXTRA_TYPE           0x0004U /* Extra type declared          */
  60
  61 /* Result of ParseDeclSpec */
  62 typedef struct DeclSpec DeclSpec;
  63 struct DeclSpec {
  64     unsigned    StorageClass;           /* One of the SC_xxx flags      */
  65     Type        Type[MAXTYPELEN];       /* Type of the declaration spec */
  66     unsigned    Flags;                  /* Bitmapped flags              */
  67 };
  68
  69 /* Result of ParseDecl */
  70 typedef struct Declaration Declaration;
  71 struct Declaration {
  72     unsigned    StorageClass;           /* A set of SC_xxx flags */
  73     Type        Type[MAXTYPELEN];       /* The type */
  74     ident       Ident;                  /* The identifier, if any*/
  75     Collection* Attributes;             /* Attributes if any */
  76
  77     /* Working variables */
  78     unsigned    Index;              /* Used to build Type */
  79 };
  80
  81 /* Modes for ParseDecl */
  82 typedef enum {
  83     DM_NEED_IDENT,                      /* We must have an identifier */
  84     DM_NO_IDENT,                        /* We won't read an identifier */
  85     DM_ACCEPT_IDENT,                    /* We will accept an id if there is one */
  86 } declmode_t;
  87
  88
  89
  90 /*****************************************************************************/
  91 /*                                   Code                                    */
  92 /*****************************************************************************/
  93
  94
  95
  96 Type* ParseType (Type* Type);
  97 /* Parse a complete type specification */
  98
  99 void ParseDecl (const DeclSpec* Spec, Declaration* D, declmode_t Mode);
 100 /* Parse a variable, type or function declaration */
 101
 102 void ParseDeclSpec (DeclSpec* D, unsigned DefStorage, long DefType);
 103 /* Parse a declaration specification */
 104
 105 void CheckEmptyDecl (const DeclSpec* D);
 106 /* Called after an empty type declaration (that is, a type declaration without
 107  * a variable). Checks if the declaration does really make sense and issues a
 108  * warning if not.
 109  */
 110
 111 unsigned ParseInit (Type* T);
 112 /* Parse initialization of variables. Return the number of initialized data
 113  * bytes.
 114  */
 115
 116
 117
 118 /* End of declare.h */
 119
 120 #endif
 121
 122
 123