tclcompiler Code

##
##  Compiler2 - Stack
##
##  (C) IPN - Ingenieurbuero fuer Praezisionsnumerik
##
##  Dipl.-Ing. Andreas Otto
##  Ulmenstrasse 3
##  D-34289 Zierenberg
##  mailto:aotto@t-online.de
##  http://tclcompiler.sourceforge.net
##
##  Alle Rechte vorbehalten
##

package require StdLib

PkgProvide StackLib

##
## ---------------------------------------------------
## List Functions
##

namespace eval ::Stack {
}

proc ::Stack::Push { stack Val } {
	upvar $stack Stack
	lappend Stack $Val
}

proc ::Stack::Pop { stack } {
	upvar $stack Stack
	set RET	  [ lindex $Stack end ]
	set Stack [ lrange $Stack 0 end-1 ]
	return $RET
}

proc ::Stack::Last { stack } {
	upvar $stack Stack
	return [ lindex $Stack end ]
}

proc ::Stack::LPush { stack Val } {
	upvar __$stack LStack $stack Stack
	Push LStack $Stack
	set Stack $Val
}

proc ::Stack::LPop { stack } {
	upvar __$stack LStack $stack Stack
	set Stack [ Pop LStack ]
}

proc ::Stack::Reverse { stack } {
	upvar $stack Stack
	set RET {}
	set End	[ expr { [ llength $Stack ] - 1 } ]
	for {} { $End > -1 } { incr End -1 } {
		lappend RET [ lindex $Stack $End ]
	}
	return $RET
}