libxkbcommon/src/xkbcomp/expr.h

/************************************************************
 Copyright (c) 1994 by Silicon Graphics Computer Systems, Inc.

 Permission to use, copy, modify, and distribute this
 software and its documentation for any purpose and without
 fee is hereby granted, provided that the above copyright
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 used in advertising or publicity pertaining to distribution
 of the software without specific prior written permission.
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 without any express or implied warranty.

 SILICON GRAPHICS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
 SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
 AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
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 DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
 OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION  WITH
 THE USE OR PERFORMANCE OF THIS SOFTWARE.

 ********************************************************/

#ifndef EXPR_H
#define EXPR_H 1

typedef union _ExprResult
{
    char *str;
    int ival;
    unsigned uval;
    XkbKeyNameRec keyName;
} ExprResult;

typedef Bool(*IdentLookupFunc) (char * /* priv */ ,
                                CARD32 /* elem */ ,
                                CARD32 /* field */ ,
                                unsigned /* type */ ,
                                ExprResult *    /* val_rtrn */
    );

extern char *exprTypeText(unsigned      /* type */
    );

extern int ExprResolveLhs(ExprDef * /* expr */ ,
                          ExprResult * /* elem_rtrn */ ,
                          ExprResult * /* field_rtrn */ ,
                          ExprDef **    /* index_rtrn */
    );

typedef struct _LookupPriv
{
    char * priv;
    IdentLookupFunc chain;
    char * chainPriv;
} LookupPriv;

typedef struct _LookupEntry
{
    const char *name;
    unsigned result;
} LookupEntry;

typedef struct _LookupTable
{
    char *element;
    LookupEntry *entries;
    struct _LookupTable *nextElement;
} LookupTable;


extern char *exprOpText(unsigned        /* type */
    );

extern int RadioLookup(char * /* priv */ ,
                       CARD32 /* elem */ ,
                       CARD32 /* field */ ,
                       unsigned /* type */ ,
                       ExprResult *     /* val_rtrn */
    );

extern int SimpleLookup(char * /* priv */ ,
                        CARD32 /* elem */ ,
                        CARD32 /* field */ ,
                        unsigned /* type */ ,
                        ExprResult *    /* val_rtrn */
    );

extern int TableLookup(char * /* priv */ ,
                       CARD32 /* elem */ ,
                       CARD32 /* field */ ,
                       unsigned /* type */ ,
                       ExprResult *     /* val_rtrn */
    );

extern int LookupModIndex(char * /* priv */ ,
                          CARD32 /* elem */ ,
                          CARD32 /* field */ ,
                          unsigned /* type */ ,
                          ExprResult *  /* val_rtrn */
    );

extern int LookupModMask(char * /* priv */ ,
                         CARD32 /* elem */ ,
                         CARD32 /* field */ ,
                         unsigned /* type */ ,
                         ExprResult *   /* val_rtrn */
    );

extern int ExprResolveModIndex(ExprDef * /* expr */ ,
                               ExprResult * /* val_rtrn */ ,
                               IdentLookupFunc /* lookup */ ,
                               char * /* lookupPriv */
    );

extern int ExprResolveModMask(ExprDef * /* expr */ ,
                              ExprResult * /* val_rtrn */ ,
                              IdentLookupFunc /* lookup */ ,
                              char *  /* priv */
    );

extern int ExprResolveBoolean(ExprDef * /* expr */ ,
                              ExprResult * /* val_rtrn */ ,
                              IdentLookupFunc /* lookup */ ,
                              char *  /* lookupPriv */
    );

extern int ExprResolveInteger(ExprDef * /* expr */ ,
                              ExprResult * /* val_rtrn */ ,
                              IdentLookupFunc /* lookup */ ,
                              char *  /* lookupPriv */
    );

extern int ExprResolveFloat(ExprDef * /* expr */ ,
                            ExprResult * /* val_rtrn */ ,
                            IdentLookupFunc /* lookup */ ,
                            char *    /* lookupPriv */
    );

extern int ExprResolveString(ExprDef * /* expr */ ,
                             ExprResult * /* val_rtrn */ ,
                             IdentLookupFunc /* lookup */ ,
                             char *   /* lookupPriv */
    );

extern int ExprResolveKeyName(ExprDef * /* expr */ ,
                              ExprResult * /* val_rtrn */ ,
                              IdentLookupFunc /* lookup */ ,
                              char *  /* lookupPriv */
    );

extern int ExprResolveEnum(ExprDef * /* expr */ ,
                           ExprResult * /* val_rtrn */ ,
                           LookupEntry *        /* values */
    );

extern int ExprResolveMask(ExprDef * /* expr */ ,
                           ExprResult * /* val_rtrn */ ,
                           IdentLookupFunc /* lookup */ ,
                           char *     /* lookupPriv */
    );

extern int ExprResolveKeySym(ExprDef * /* expr */ ,
                             ExprResult * /* val_rtrn */ ,
                             IdentLookupFunc /* lookup */ ,
                             char *   /* lookupPriv */
    );

#endif /* EXPR_H */