1 /* 2 ** C declaration parser. 3 ** Copyright (C) 2005-2017 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 #endif 64 65 #endif 66