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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 of this software for any purpose. It is provided "as is"
 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
 GRAPHICS BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
 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;
    struct xkb_key_name keyName;
} ExprResult;

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

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


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

extern int LookupModMask(const void * /* priv */ ,
                         xkb_atom_t /* field */ ,
                         unsigned /* type */ ,
                         ExprResult *  /* val_rtrn */
    );

extern int LookupVModMask(const void * /* priv */ ,
                          xkb_atom_t /* field */ ,
                          unsigned /* type */ ,
                          ExprResult *  /* val_rtrn */
    );

extern int LookupModIndex(const void * /* priv */ ,
                          xkb_atom_t /* field */ ,
                          unsigned /* type */ ,
                          ExprResult *  /* val_rtrn */
    );

extern int ExprResolveModMask(ExprDef * /* expr */ ,
                              ExprResult * /* val_rtrn */
    );

extern int ExprResolveVModMask(ExprDef * /* expr */ ,
                               ExprResult * /* val_rtrn */ ,
                               struct xkb_desc * /* xkb */
    );

extern int ExprResolveBoolean(ExprDef * /* expr */ ,
                              ExprResult * /* val_rtrn */
    );

extern int ExprResolveKeyCode(ExprDef * /* expr */ ,
                              ExprResult * /* val_rtrn */
    );

extern int ExprResolveInteger(ExprDef * /* expr */ ,
                              ExprResult * /* val_rtrn */
    );

extern int ExprResolveLevel(ExprDef * /* expr */ ,
                            ExprResult * /* val_rtrn */
    );

extern int ExprResolveGroup(ExprDef * /* expr */ ,
                            ExprResult * /* val_rtrn */
    );

extern int ExprResolveButton(ExprDef * /* expr */ ,
                             ExprResult * /* val_rtrn */
    );

extern int ExprResolveFloat(ExprDef * /* expr */ ,
                            ExprResult * /* val_rtrn */
    );

extern int ExprResolveString(ExprDef * /* expr */ ,
                             ExprResult * /* val_rtrn */
    );

extern int ExprResolveKeyName(ExprDef * /* expr */ ,
                              ExprResult * /* val_rtrn */
    );

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

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

extern int ExprResolveKeySym(ExprDef * /* expr */ ,
                             ExprResult * /* val_rtrn */
    );

#endif /* EXPR_H */