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|
# -*-Tcl-*-
#
# This [incr Tcl] library script contains type definitions
#
#
# Type super class
#
if {[string length [info commands debug]] == 0} {
proc debug {args} {}
}
class Type {
variable _value
variable _valueSaved
variable _voidPtr
variable _bVoid
protected variable _currentNamespace
protected variable _lProc
protected variable _upLevel
constructor args {
debug {======= Constructor: [info class] $this $args} 3
# Go up in the inheritance tree
debug { Go up inheritance tree} 4
set level 1
if {[string compare [info class] ::Type] != 0} {
debug { level set to >1<} 5
while {[string compare [info class] \
[uplevel $level {namespace current}]] != 0} {
debug {>[info class]< != >[uplevel $level\
{namespace current}]<} 5
incr level
debug { level incrmented to >$level<} 5
}
debug {>[info class]< == >[uplevel $level\
{namespace current}]<} 5
incr level
regsub {^::} [uplevel $level {namespace current}] "" currentNamespace
} else {
regsub {^::} [uplevel {namespace current}] "" currentNamespace
}
set upLevel [expr [info level] - $level]
set lProc [info level $upLevel]
debug { Called from level: >$upLevel<} 4
debug { Called from : >$lProc<} 4
debug { Current namespace: >$currentNamespace<} 4
#catch {puts " [uplevel "info body [lindex $lProc 0]"]"}
set _bVoid 0
set _voidPtr 0
if {[llength $args] > 0} {
set _value [lindex $args 0]
} else {
set _value ""
}
if {$upLevel == 0} {
debug {Called from global} 4
set $this $_value
debug {this variable: [set $this]} 4
trace variable $this rwu traceType
} elseif {[string length $currentNamespace] && \
[string length $lProc]} {
debug {Called from procedure in namespace} 4
debug { this: >$this<} 4
debug {set $this >$_value<}
catch {
uplevel #$upLevel set [namespace tail $this] \"$_value\"
uplevel #$upLevel trace variable [namespace tail $this] \
rwu traceType
} szErrMsg; debug { szErrMsg: >$szErrMsg<} 4
} elseif {[string length $currentNamespace]} {
debug {Called from namespace} 4
debug {set $this >$_value<}
catch {
namespace eval ${currentNamespace} "set $this \"$_value\"\n\
trace variable $this rwu traceType"
} szErrMsg
debug { TRACE set} 4
debug { szErrMsg: >$szErrMsg<} 4
} else {
debug {Called from procedure} 4
set var [namespace tail $this]
uplevel "set $var $_value"
debug {this variable: [uplevel "set $var"]} 4
uplevel "trace variable $var rwu traceType"
}
}
destructor {
debug {======= destructor $this} 3
set calledFrom [lindex [split [info level [expr [info level] - 1]]] 0]
debug { calledFrom: >$calledFrom<} 4
debug { >[info level [expr [info level] - 1]]<} 4
# just return when called from traceType
if {[string compare $calledFrom "traceType"] != 0} {
set var [namespace tail $this]
debug { var: >$var<} 4
debug { >[join [trace vinfo $var]]<} 4
debug { >[uplevel [join [trace vinfo $var]]]<} 4
debug { >[join [uplevel "trace vinfo $var"]]<} 4
catch {
debug {eval uplevel \"trace vdelete $var [join [uplevel "trace vinfo $var"]]\"} 4
eval uplevel "trace vdelete $var [join [uplevel "trace vinfo $var"]]"
uplevel unset $var
} szErrMsg; debug { #### szErrMsg: >$szErrMsg<} 4
}
}
public method value {args} {
if {[llength $args] > 0} {
set _value [lindex $args 0]
}
return $_value
}
public method setNull {{ptr 0}} {
set _voidPtr $ptr
set _bVoid 1
}
public method unsetNull {} {
set _bVoid 0
}
public method isNull {} {
return $_bVoid
}
public method getNull {} {
return $_voidPtr
}
}
proc traceType {name1 name2 ops} {
debug {======= traceType >$name1< >$name2< >$ops<} 3
upvar $name1 var
set upLevel [expr [info level] - 1]
set lProc [info level $upLevel]
regsub {^::} [uplevel {namespace current}] "" currentNamespace
debug { Called from level: >$upLevel<} 4
debug { level namespace : >[uplevel #$upLevel namespace current]<} 4
debug { Called from : >$lProc<} 4
debug { Current namespace: >$currentNamespace<} 4
if {$upLevel == 0} {
debug {Called from global} 4
switch $ops {
r {
set var [uplevel $name1 value]
}
w {
if [catch {$name1 value [set var]}] {
uplevel "$name1 value [set var]"
}
}
u {
uplevel delete object $name1
}
}
} elseif {[string length $currentNamespace] && \
[string length $lProc]} {
debug {Called from procedure in namespace} 4
set var [uplevel ::itcl::find objects $name1]
debug { $name1 ->$var< = ><} 4
switch $ops {
r {
uplevel set $name1 [uplevel $var value]
}
w {
if [catch {uplevel $var value [uplevel set $name1]} szErrMsg] {
debug {####### Error: $szErrMsg} 4
}
}
u {
uplevel delete object $name1
}
}
} elseif {[string length $currentNamespace]} {
debug {Called from namespace} 4
set var [uplevel "namespace which -variable $name1"]
debug { $name1 ->$var< = ><} 4
switch $ops {
r {
set $var [$var value]
}
w {
if [catch {$var value [set $var]} szErrMsg] {
debug {####### Error: $szErrMsg} 4
}
}
u {
debug {Deleting >$name1<} 4
debug { [namespace current]} 4
catch {delete object $name1}
debug { DONE!} 4
}
}
} else {
debug {Called from procedure} 4
switch $ops {
r {
set $name1 [$name1 value]
}
w {
if [catch {$name1 value [uplevel set $name1]}] {
uplevel "$name1 value [set $name1]"
}
}
u {
delete object $name1
}
}
}
}
|
