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Annotation of researchv10dc/cmd/icon/src/tran/sym.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Structures for symbol table entries.
        !             3:  */
        !             4: 
        !             5: struct lentry {                        /* local table entry */
        !             6:    struct lentry *l_blink;     /*   link for bucket chain */
        !             7:    char *l_name;               /*   name of variable */
        !             8:    int l_flag;                 /*   variable flags */
        !             9:    };
        !            10: 
        !            11: struct gentry {                        /* global table entry */
        !            12:    struct gentry *g_blink;     /*   link for bucket chain */
        !            13:    char *g_name;               /*   name of variable */
        !            14:    int g_flag;                 /*   variable flags */
        !            15:    int g_nargs;                        /*   number of args (procedure) or */
        !            16:    };                          /*     number of fields (record) */
        !            17: 
        !            18: struct centry {                        /* constant table entry */
        !            19:    struct centry *c_blink;     /*   link for bucket chain */
        !            20:    char *c_name;               /*   pointer to string */
        !            21:    int c_length;               /*   length of string */
        !            22:    int c_flag;                 /*   type of literal flag */
        !            23:    };
        !            24: 
        !            25: struct ientry {                        /* identifier table entry */
        !            26:    struct ientry *i_blink;     /*   link for bucket chain */
        !            27:    char *i_name;               /*   pointer to string */
        !            28:    int i_length;               /*   length of string */
        !            29:    };
        !            30: 
        !            31: /*
        !            32:  * Flag values.
        !            33:  */
        !            34: 
        !            35: #define F_Global           01  /* variable declared global externally */
        !            36: #define F_Proc             04  /* procedure */
        !            37: #define F_Record          010  /* record */
        !            38: #define F_Dynamic         020  /* variable declared local dynamic */
        !            39: #define F_Static          040  /* variable declared local static */
        !            40: #define F_Builtin        0100  /* identifier refers to built-in procedure */
        !            41: #define F_ImpError       0400  /* procedure has default error */
        !            42: #define F_Argument      01000  /* variable is a formal parameter */
        !            43: #define F_IntLit        02000  /* literal is an integer */
        !            44: #define F_RealLit       04000  /* literal is a real */
        !            45: #define F_StrLit       010000  /* literal is a string */
        !            46: #define F_CsetLit      020000  /* literal is a cset */
        !            47: 
        !            48: /*
        !            49:  * Symbol table region pointers.
        !            50:  */
        !            51: 
        !            52: extern struct lentry **lhash;  /* hash area for local table */
        !            53: extern struct gentry **ghash;  /* hash area for global table */
        !            54: extern struct centry **chash;  /* hash area for constant table */
        !            55: extern struct ientry **ihash;  /* hash area for identifier table */
        !            56: 
        !            57: extern struct lentry *ltable;  /* local table */
        !            58: extern struct gentry *gtable;  /* global table */
        !            59: extern struct centry *ctable;  /* constant table */
        !            60: extern struct ientry *itable;  /* identifier table */
        !            61: 
        !            62: extern struct lentry *lfree;   /* free pointer for local table */
        !            63: extern struct gentry *gfree;   /* free pointer for global table */
        !            64: extern struct centry *ctfree;  /* free pointer for constant table */
        !            65: extern struct ientry *ifree;   /* free pointer for identifier table */
        !            66: 
        !            67: extern int lsize;              /* initial size of local table */
        !            68: extern int gsize;              /* initial size of global table */
        !            69: extern int csize;              /* initial size of constant table */
        !            70: extern int isize;              /* initial size of identifier table */
        !            71: extern int ihsize;             /* initial size of identifier hash table */
        !            72: extern int lhsize;             /* initial size of local hash tables */
        !            73: extern int ghsize;             /* initial size of global hash tables */
        !            74: extern int chsize;             /* initial size of constant hash tables */
        !            75: extern int lmask;              /* mask for local table hash */
        !            76: extern int gmask;              /* mask for global table hash */
        !            77: extern int cmask;              /* mask for constant table hash */
        !            78: extern int imask;              /* mask for identifier table hash */
        !            79: 
        !            80: /*
        !            81:  * Symbol table parameters.
        !            82:  */
        !            83: 
        !            84: #define LSize    100           /* default size of local table */
        !            85: #define GSize    100           /* default size of global table */
        !            86: #define CSize    100           /* default size of constant table */
        !            87: #define ISize    500           /* default size of identifier table */
        !            88: #define LhSize   128           /* default size of local hash table */
        !            89: #define GhSize   128           /* default size of global hash table */
        !            90: #define ChSize   128           /* default size of constant hash table */
        !            91: #define IhSize   128           /* default size of identifier hash table */
        !            92: 
        !            93: 
        !            94: /*
        !            95:  * Structure for keyword table.
        !            96:  */
        !            97: 
        !            98: struct keyent {
        !            99:       char *keyname;
        !           100:       int keyid;
        !           101:       };
        !           102: 
        !           103: extern struct keyent keytab[]; /* keyword table */
        !           104: 
        !           105: /*
        !           106:  * Hash functions for symbol tables.
        !           107:  */
        !           108: 
        !           109: #define ghasher(x)     (((int)x)&gmask)        /* global symbol table */
        !           110: #define lhasher(x)     (((int)x)&lmask)        /* local symbol table */
        !           111: #define chasher(x)     (((int)x)&cmask)        /* constant symbol table */

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