152 lines
5.0 KiB
Tcl
152 lines
5.0 KiB
Tcl
#
|
|
# itcl.tcl
|
|
# ----------------------------------------------------------------------
|
|
# Invoked automatically upon startup to customize the interpreter
|
|
# for [incr Tcl].
|
|
# ----------------------------------------------------------------------
|
|
# AUTHOR: Michael J. McLennan
|
|
# Bell Labs Innovations for Lucent Technologies
|
|
# mmclennan@lucent.com
|
|
# http://www.tcltk.com/itcl
|
|
# ----------------------------------------------------------------------
|
|
# Copyright (c) 1993-1998 Lucent Technologies, Inc.
|
|
# ======================================================================
|
|
# See the file "license.terms" for information on usage and
|
|
# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
|
|
|
|
proc ::itcl::delete_helper { name args } {
|
|
::itcl::delete object $name
|
|
}
|
|
|
|
# ----------------------------------------------------------------------
|
|
# USAGE: local <className> <objName> ?<arg> <arg>...?
|
|
#
|
|
# Creates a new object called <objName> in class <className>, passing
|
|
# the remaining <arg>'s to the constructor. Unlike the usual
|
|
# [incr Tcl] objects, however, an object created by this procedure
|
|
# will be automatically deleted when the local call frame is destroyed.
|
|
# This command is useful for creating objects that should only remain
|
|
# alive until a procedure exits.
|
|
# ----------------------------------------------------------------------
|
|
proc ::itcl::local {class name args} {
|
|
set ptr [uplevel [list $class $name] $args]
|
|
uplevel [list set itcl-local-$ptr $ptr]
|
|
set cmd [uplevel namespace which -command $ptr]
|
|
uplevel [list trace variable itcl-local-$ptr u \
|
|
"::itcl::delete_helper $cmd"]
|
|
return $ptr
|
|
}
|
|
|
|
# ----------------------------------------------------------------------
|
|
# auto_mkindex
|
|
# ----------------------------------------------------------------------
|
|
# Define Itcl commands that will be recognized by the auto_mkindex
|
|
# parser in Tcl...
|
|
#
|
|
|
|
#
|
|
# USAGE: itcl::class name body
|
|
# Adds an entry for the given class declaration.
|
|
#
|
|
foreach __cmd {itcl::class class itcl::type type ictl::widget widget itcl::widgetadaptor widgetadaptor itcl::extendedclass extendedclass} {
|
|
auto_mkindex_parser::command $__cmd {name body} {
|
|
variable index
|
|
variable scriptFile
|
|
append index "set [list auto_index([fullname $name])]"
|
|
append index " \[list source \[file join \$dir [list $scriptFile]\]\]\n"
|
|
|
|
variable parser
|
|
variable contextStack
|
|
set contextStack [linsert $contextStack 0 $name]
|
|
$parser eval $body
|
|
set contextStack [lrange $contextStack 1 end]
|
|
}
|
|
}
|
|
|
|
#
|
|
# USAGE: itcl::body name arglist body
|
|
# Adds an entry for the given method/proc body.
|
|
#
|
|
foreach __cmd {itcl::body body} {
|
|
auto_mkindex_parser::command $__cmd {name arglist body} {
|
|
variable index
|
|
variable scriptFile
|
|
append index "set [list auto_index([fullname $name])]"
|
|
append index " \[list source \[file join \$dir [list $scriptFile]\]\]\n"
|
|
}
|
|
}
|
|
|
|
#
|
|
# USAGE: itcl::configbody name arglist body
|
|
# Adds an entry for the given method/proc body.
|
|
#
|
|
foreach __cmd {itcl::configbody configbody} {
|
|
auto_mkindex_parser::command $__cmd {name body} {
|
|
variable index
|
|
variable scriptFile
|
|
append index "set [list auto_index([fullname $name])]"
|
|
append index " \[list source \[file join \$dir [list $scriptFile]\]\]\n"
|
|
}
|
|
}
|
|
|
|
#
|
|
# USAGE: ensemble name ?body?
|
|
# Adds an entry to the auto index list for the given ensemble name.
|
|
#
|
|
foreach __cmd {itcl::ensemble ensemble} {
|
|
auto_mkindex_parser::command $__cmd {name {body ""}} {
|
|
variable index
|
|
variable scriptFile
|
|
append index "set [list auto_index([fullname $name])]"
|
|
append index " \[list source \[file join \$dir [list $scriptFile]\]\]\n"
|
|
}
|
|
}
|
|
|
|
#
|
|
# USAGE: public arg ?arg arg...?
|
|
# protected arg ?arg arg...?
|
|
# private arg ?arg arg...?
|
|
#
|
|
# Evaluates the arguments as commands, so we can recognize proc
|
|
# declarations within classes.
|
|
#
|
|
foreach __cmd {public protected private} {
|
|
auto_mkindex_parser::command $__cmd {args} {
|
|
variable parser
|
|
$parser eval $args
|
|
}
|
|
}
|
|
|
|
# SF bug #246 unset variable __cmd to avoid problems in user programs!!
|
|
unset __cmd
|
|
|
|
# ----------------------------------------------------------------------
|
|
# auto_import
|
|
# ----------------------------------------------------------------------
|
|
# This procedure overrides the usual "auto_import" function in the
|
|
# Tcl library. It is invoked during "namespace import" to make see
|
|
# if the imported commands reside in an autoloaded library. If so,
|
|
# stubs are created to represent the commands. Executing a stub
|
|
# later on causes the real implementation to be autoloaded.
|
|
#
|
|
# Arguments -
|
|
# pattern The pattern of commands being imported (like "foo::*")
|
|
# a canonical namespace as returned by [namespace current]
|
|
|
|
proc auto_import {pattern} {
|
|
global auto_index
|
|
|
|
set ns [uplevel namespace current]
|
|
set patternList [auto_qualify $pattern $ns]
|
|
|
|
auto_load_index
|
|
|
|
foreach pattern $patternList {
|
|
foreach name [array names auto_index $pattern] {
|
|
if {"" == [info commands $name]} {
|
|
::itcl::import::stub create $name
|
|
}
|
|
}
|
|
}
|
|
}
|