| 1 | /* |
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| 2 | * ---------------------------------------------------------------------- |
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| 3 | * rp_tcloptions |
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| 4 | * |
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| 5 | * This library is used to implement configuration options for the |
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| 6 | * Tcl API used in Rappture. It lets you define a series of |
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| 7 | * configuration options like the ones used for Tk widgets, and |
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| 8 | * provides functions to process them. |
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| 9 | * |
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| 10 | * ====================================================================== |
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| 11 | * AUTHOR: Michael McLennan, Purdue University |
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| 12 | * Copyright (c) 2008 Purdue Research Foundation |
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| 13 | * |
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| 14 | * See the file "license.terms" for information on usage and |
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| 15 | * redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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| 16 | * ====================================================================== |
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| 17 | */ |
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| 18 | #ifndef RP_TCLOPTIONS |
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| 19 | #define RP_TCLOPTIONS |
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| 20 | |
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| 21 | #include <tcl.h> |
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| 22 | |
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| 23 | /* |
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| 24 | * These data structures are used to define configuration options |
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| 25 | * associated with parameters and optimizer cores. They work just |
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| 26 | * like Tk widget options, but for objects that are not widgets. |
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| 27 | */ |
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| 28 | #ifdef offsetof |
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| 29 | #define Rp_Offset(type, field) ((int) offsetof(type, field)) |
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| 30 | #else |
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| 31 | #define Rp_Offset(type, field) ((int) ((char *) &((type *) 0)->field)) |
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| 32 | #endif |
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| 33 | |
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| 34 | typedef int (RpCustomTclOptionParse)_ANSI_ARGS_((Tcl_Interp *interp, |
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| 35 | Tcl_Obj *valObj, ClientData cdata, int offset)); |
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| 36 | typedef int (RpCustomTclOptionGet)_ANSI_ARGS_((Tcl_Interp *interp, |
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| 37 | ClientData cdata, int offset)); |
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| 38 | typedef void (RpCustomTclOptionCleanup)_ANSI_ARGS_((ClientData cdata, |
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| 39 | int offset)); |
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| 40 | |
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| 41 | typedef struct RpTclOptionType { |
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| 42 | char *type; /* name describing this type */ |
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| 43 | RpCustomTclOptionParse *parseProc; /* procedure to parse new values */ |
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| 44 | RpCustomTclOptionGet *getProc; /* procedure to report cur value */ |
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| 45 | RpCustomTclOptionCleanup *cleanupProc; /* procedure to free up value */ |
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| 46 | } RpTclOptionType; |
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| 47 | |
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| 48 | typedef struct RpTclOption { |
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| 49 | char *optname; /* name of option: -switch */ |
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| 50 | RpTclOptionType *typePtr; /* type of this switch */ |
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| 51 | ClientData extraInfo; /* extra data needed for switch type */ |
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| 52 | int offset; /* location of data within struct */ |
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| 53 | } RpTclOption; |
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| 54 | |
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| 55 | /* |
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| 56 | * Built-in types defined in rp_tcloptions.c |
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| 57 | */ |
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| 58 | extern RpTclOptionType RpOption_Int; |
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| 59 | #define RP_OPTION_INT &RpOption_Int |
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| 60 | |
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| 61 | extern RpTclOptionType RpOption_Double; |
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| 62 | #define RP_OPTION_DOUBLE &RpOption_Double |
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| 63 | |
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| 64 | extern RpTclOptionType RpOption_String; |
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| 65 | #define RP_OPTION_STRING &RpOption_String |
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| 66 | |
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| 67 | extern RpTclOptionType RpOption_List; |
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| 68 | #define RP_OPTION_LIST &RpOption_List |
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| 69 | |
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| 70 | /* |
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| 71 | * Here are the functions in the API: |
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| 72 | */ |
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| 73 | EXTERN int RpTclOptionsProcess _ANSI_ARGS_((Tcl_Interp *interp, |
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| 74 | int objc, Tcl_Obj *CONST objv[], RpTclOption *options, |
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| 75 | ClientData cdata)); |
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| 76 | |
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| 77 | EXTERN int RpTclOptionGet _ANSI_ARGS_((Tcl_Interp *interp, |
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| 78 | RpTclOption *options, ClientData cdata, char *desiredOpt)); |
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| 79 | |
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| 80 | EXTERN void RpTclOptionsCleanup _ANSI_ARGS_((RpTclOption *options, |
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| 81 | ClientData cdata)); |
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| 82 | |
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| 83 | #endif |
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