src/lj_cparse.h

   1 /*
   2 ** C declaration parser.
   3 ** Copyright (C) 2005-2023 Mike Pall. See Copyright Notice in luajit.h
   4 */
   5
   6 #ifndef _LJ_CPARSE_H
   7 #define _LJ_CPARSE_H
   8
   9 #include "lj_obj.h"
  10 #include "lj_ctype.h"
  11
  12 #if LJ_HASFFI
  13
  14 /* C parser limits. */
  15 #define CPARSE_MAX_BUF          32768   /* Max. token buffer size. */
  16 #define CPARSE_MAX_DECLSTACK    100     /* Max. declaration stack depth. */
  17 #define CPARSE_MAX_DECLDEPTH    20      /* Max. recursive declaration depth. */
  18 #define CPARSE_MAX_PACKSTACK    7       /* Max. pack pragma stack depth. */
  19
  20 /* Flags for C parser mode. */
  21 #define CPARSE_MODE_MULTI       1       /* Process multiple declarations. */
  22 #define CPARSE_MODE_ABSTRACT    2       /* Accept abstract declarators. */
  23 #define CPARSE_MODE_DIRECT      4       /* Accept direct declarators. */
  24 #define CPARSE_MODE_FIELD       8       /* Accept field width in bits, too. */
  25 #define CPARSE_MODE_NOIMPLICIT  16      /* Reject implicit declarations. */
  26 #define CPARSE_MODE_SKIP        32      /* Skip definitions, ignore errors. */
  27
  28 typedef int CPChar;     /* C parser character. Unsigned ext. from char. */
  29 typedef int CPToken;    /* C parser token. */
  30
  31 /* C parser internal value representation. */
  32 typedef struct CPValue {
  33   union {
  34     int32_t i32;        /* Value for CTID_INT32. */
  35     uint32_t u32;       /* Value for CTID_UINT32. */
  36   };
  37   CTypeID id;           /* C Type ID of the value. */
  38 } CPValue;
  39
  40 /* C parser state. */
  41 typedef struct CPState {
  42   CPChar c;             /* Current character. */
  43   CPToken tok;          /* Current token. */
  44   CPValue val;          /* Token value. */
  45   GCstr *str;           /* Interned string of identifier/keyword. */
  46   CType *ct;            /* C type table entry. */
  47   const char *p;        /* Current position in input buffer. */
  48   SBuf sb;              /* String buffer for tokens. */
  49   lua_State *L;         /* Lua state. */
  50   CTState *cts;         /* C type state. */
  51   TValue *param;        /* C type parameters. */
  52   const char *srcname;  /* Current source name. */
  53   BCLine linenumber;    /* Input line counter. */
  54   int depth;            /* Recursive declaration depth. */
  55   uint32_t tmask;       /* Type mask for next identifier. */
  56   uint32_t mode;        /* C parser mode. */
  57   uint8_t packstack[CPARSE_MAX_PACKSTACK];  /* Stack for pack pragmas. */
  58   uint8_t curpack;      /* Current position in pack pragma stack. */
  59 } CPState;
  60
  61 LJ_FUNC int lj_cparse(CPState *cp);
  62
  63 LJ_FUNC int lj_cparse_case(GCstr *str, const char *match);
  64
  65 #endif
  66
  67 #endif