diff options
Diffstat (limited to 'doc/Ensemble.3')
| -rw-r--r-- | doc/Ensemble.3 | 73 |
1 files changed, 52 insertions, 21 deletions
diff --git a/doc/Ensemble.3 b/doc/Ensemble.3 index 5a5842d..19c6099 100644 --- a/doc/Ensemble.3 +++ b/doc/Ensemble.3 @@ -10,7 +10,7 @@ .TH Tcl_Ensemble 3 8.5 Tcl "Tcl Library Procedures" .BS .SH NAME -Tcl_CreateEnsemble, Tcl_FindEnsemble, Tcl_GetEnsembleFlags, Tcl_GetEnsembleMappingDict, Tcl_GetEnsembleNamespace, Tcl_GetEnsembleUnknownHandler, Tcl_GetEnsembleSubcommandList, Tcl_IsEnsemble, Tcl_SetEnsembleFlags, Tcl_SetEnsembleMappingDict, Tcl_SetEnsembleSubcommandList, Tcl_SetEnsembleUnknownHandler \- manipulate ensemble commands +Tcl_CreateEnsemble, Tcl_FindEnsemble, Tcl_GetEnsembleFlags, Tcl_GetEnsembleMappingDict, Tcl_GetEnsembleNamespace, Tcl_GetEnsembleParameterList, Tcl_GetEnsembleUnknownHandler, Tcl_GetEnsembleSubcommandList, Tcl_IsEnsemble, Tcl_SetEnsembleFlags, Tcl_SetEnsembleMappingDict, Tcl_SetEnsembleParameterList, Tcl_SetEnsembleSubcommandList, Tcl_SetEnsembleUnknownHandler \- manipulate ensemble commands .SH SYNOPSIS .nf \fB#include <tcl.h>\fR @@ -36,6 +36,14 @@ int int \fBTcl_SetEnsembleMappingDict\fR(\fIinterp, token, dictObj\fR) .sp +.VS 8.6 +int +\fBTcl_GetEnsembleParameterList\fR(\fIinterp, token, listObjPtr\fR) +.sp +int +\fBTcl_SetEnsembleParameterList\fR(\fIinterp, token, listObj\fR) +.VE 8.6 +.sp int \fBTcl_GetEnsembleSubcommandList\fR(\fIinterp, token, listObjPtr\fR) .sp @@ -64,20 +72,20 @@ The namespace to which the ensemble command is to be bound, or NULL for the current namespace. .AP int ensFlags in An ORed set of flag bits describing the basic configuration of the -ensemble. Currently only one bit has meaning, TCL_ENSEMBLE_PREFIX, +ensemble. Currently only one bit has meaning, \fBTCL_ENSEMBLE_PREFIX\fR, which is present when the ensemble command should also match unambiguous prefixes of subcommands. .AP Tcl_Obj *cmdNameObj in A value holding the name of the ensemble command to look up. .AP int flags in An ORed set of flag bits controlling the behavior of -\fBTcl_FindEnsemble\fR. Currently only TCL_LEAVE_ERR_MSG is supported. +\fBTcl_FindEnsemble\fR. Currently only \fBTCL_LEAVE_ERR_MSG\fR is supported. .AP Tcl_Command token in A normal command token that refers to an ensemble command, or which you wish to use for testing as an ensemble command in \fBTcl_IsEnsemble\fR. .AP int *ensFlagsPtr out Pointer to a variable into which to write the current ensemble flag -bits; currently only the bit TCL_ENSEMBLE_PREFIX is defined. +bits; currently only the bit \fBTCL_ENSEMBLE_PREFIX\fR is defined. .AP Tcl_Obj *dictObj in A dictionary value to use for the subcommand to implementation command prefix mapping dictionary in the ensemble. May be NULL if the mapping @@ -86,17 +94,18 @@ dictionary is to be removed. Pointer to a variable into which to write the current ensemble mapping dictionary. .AP Tcl_Obj *listObj in -A list value to use for the defined list of subcommands in the -dictionary or the unknown subcommmand handler command prefix. May be -NULL if the subcommand list or unknown handler are to be removed. +A list value to use for the list of formal pre-subcommand parameters, the +defined list of subcommands in the dictionary or the unknown subcommmand +handler command prefix. May be NULL if the subcommand list or unknown handler +are to be removed. .AP Tcl_Obj **listObjPtr out -Pointer to a variable into which to write the current defiend list of -subcommands or the current unknown handler prefix. +Pointer to a variable into which to write the current list of formal +pre-subcommand parameters, the defined list of subcommands or the current +unknown handler prefix. .AP Tcl_Namespace **namespacePtrPtr out Pointer to a variable into which to write the handle of the namespace to which the ensemble is bound. .BE - .SH DESCRIPTION An ensemble is a command, bound to some namespace, which consists of a collection of subcommands implemented by other Tcl commands. The first @@ -108,13 +117,13 @@ arguments: the interpreter to work within, the name of the ensemble to create, the namespace within the interpreter to bind the ensemble to, and the default set of ensemble flags. The result of the function is the command token for the ensemble, which may be used to further -configure the ensemble using the API described below in \fBENSEMBLE -PROPERTIES\fR. +configure the ensemble using the API described below in +\fBENSEMBLE PROPERTIES\fR. .PP Given the name of an ensemble command, the token for that command may be retrieved using \fBTcl_FindEnsemble\fR. If the given command name (in \fIcmdNameObj\fR) does not refer to an ensemble command, the -result of the function is NULL and (if the TCL_LEAVE_ERR_MSG bit is +result of the function is NULL and (if the \fBTCL_LEAVE_ERR_MSG\fR bit is set in \fIflags\fR) an error message is left in the interpreter result. .PP @@ -126,16 +135,18 @@ Every ensemble has four read-write properties and a read-only property. The properties are: .TP \fBflags\fR (read-write) +. The set of flags for the ensemble, expressed as a -bit-field. Currently, the only public flag is TCL_ENSEMBLE_PREFIX +bit-field. Currently, the only public flag is \fBTCL_ENSEMBLE_PREFIX\fR which is set when unambiguous prefixes of subcommands are permitted to be resolved to implementations as well as exact matches. The flags may be read and written using \fBTcl_GetEnsembleFlags\fR and \fBTcl_SetEnsembleFlags\fR respectively. The result of both of those -functions is a Tcl result code (TCL_OK, or TCL_ERROR if the token does -not refer to an ensemble). +functions is a Tcl result code (\fBTCL_OK\fR, or \fBTCL_ERROR\fR if +the token does not refer to an ensemble). .TP \fBmapping dictionary\fR (read-write) +. A dictionary containing a mapping from subcommand names to lists of words to use as a command prefix (replacing the first two words of the command which are the ensemble command itself and the subcommand @@ -144,24 +155,41 @@ the same unqualified name in the ensemble's bound namespace. Defaults to NULL. May be read and written using \fBTcl_GetEnsembleMappingDict\fR and \fBTcl_SetEnsembleMappingDict\fR respectively. The result of both of those functions is a Tcl result -code (TCL_OK, or TCL_ERROR if the token does not refer to an +code (\fBTCL_OK\fR, or \fBTCL_ERROR\fR if the token does not refer to an ensemble) and the dictionary obtained from \fBTcl_GetEnsembleMappingDict\fR should always be treated as immutable even if it is unshared. .TP +\fBformal pre-subcommand parameter list\fR (read-write) +.VS 8.6 +A list of formal parameter names (the names only being used when generating +error messages) that come at invocation of the ensemble between the name of +the ensemble and the subcommand argument. NULL (the default) is equivalent to +the empty list. May be read and written using +\fBTcl_GetEnsembleParameterList\fR and \fBTcl_SetEnsembleParameterList\fR +respectively. The result of both of those functions is a Tcl result code +(\fBTCL_OK\fR, or \fBTCL_ERROR\fR if the token does not refer to an +ensemble) and the +dictionary obtained from \fBTcl_GetEnsembleParameterList\fR should always be +treated as immutable even if it is unshared. +.VE 8.6 +.TP \fBsubcommand list\fR (read-write) +. A list of all the subcommand names for the ensemble, or NULL if this is to be derived from either the keys of the mapping dictionary (see above) or (if that is also NULL) from the set of commands exported by the bound namespace. May be read and written using \fBTcl_GetEnsembleSubcommandList\fR and \fBTcl_SetEnsembleSubcommandList\fR respectively. The result of both -of those functions is a Tcl result code (TCL_OK, or TCL_ERROR if the +of those functions is a Tcl result code (\fBTCL_OK\fR, or +\fBTCL_ERROR\fR if the token does not refer to an ensemble) and the list obtained from \fBTcl_GetEnsembleSubcommandList\fR should always be treated as immutable even if it is unshared. .TP \fBunknown subcommand handler command prefix\fR (read-write) +. A list of words to prepend on the front of any subcommand when the subcommand is unknown to the ensemble (according to the current prefix handling rule); see the \fBnamespace ensemble\fR command for more @@ -169,18 +197,21 @@ details. If NULL, the default behavior \- generate a suitable error message \- will be used when an unknown subcommand is encountered. May be read and written using \fBTcl_GetEnsembleUnknownHandler\fR and \fBTcl_SetEnsembleUnknownHandler\fR respectively. The result of both -functions is a Tcl result code (TCL_OK, or TCL_ERROR if the token does +functions is a Tcl result code (\fBTCL_OK\fR, or \fBTCL_ERROR\fR if +the token does not refer to an ensemble) and the list obtained from \fBTcl_GetEnsembleUnknownHandler\fR should always be treated as immutable even if it is unshared. .TP \fBbound namespace\fR (read-only) +. The namespace to which the ensemble is bound; when the namespace is deleted, so too will the ensemble, and this namespace is also the namespace whose list of exported commands is used if both the mapping dictionary and the subcommand list properties are NULL. May be read using \fBTcl_GetEnsembleNamespace\fR which returns a Tcl result code -(TCL_OK, or TCL_ERROR if the token does not refer to an ensemble). - +(\fBTCL_OK\fR, or \fBTCL_ERROR\fR if the token does not refer to an ensemble). .SH "SEE ALSO" namespace(n), Tcl_DeleteCommandFromToken(3) +.SH KEYWORDS +command, ensemble |