/usr/share/git-gui/lib/class.tcl is in git-gui 1:2.17.0-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 | # git-gui simple class/object fake-alike
# Copyright (C) 2007 Shawn Pearce
proc class {class body} {
if {[namespace exists $class]} {
error "class $class already declared"
}
namespace eval $class "
variable __nextid 0
variable __sealed 0
variable __field_list {}
variable __field_array
proc cb {name args} {
upvar this this
concat \[list ${class}::\$name \$this\] \$args
}
"
namespace eval $class $body
}
proc field {name args} {
set class [uplevel {namespace current}]
variable ${class}::__sealed
variable ${class}::__field_array
switch [llength $args] {
0 { set new [list $name] }
1 { set new [list $name [lindex $args 0]] }
default { error "wrong # args: field name value?" }
}
if {$__sealed} {
error "class $class is sealed (cannot add new fields)"
}
if {[catch {set old $__field_array($name)}]} {
variable ${class}::__field_list
lappend __field_list $new
set __field_array($name) 1
} else {
error "field $name already declared"
}
}
proc constructor {name params body} {
set class [uplevel {namespace current}]
set ${class}::__sealed 1
variable ${class}::__field_list
set mbodyc {}
append mbodyc {set this } $class
append mbodyc {::__o[incr } $class {::__nextid]::__d} \;
append mbodyc {create_this } $class \;
append mbodyc {set __this [namespace qualifiers $this]} \;
if {$__field_list ne {}} {
append mbodyc {upvar #0}
foreach n $__field_list {
set n [lindex $n 0]
append mbodyc { ${__this}::} $n { } $n
regsub -all @$n\\M $body "\${__this}::$n" body
}
append mbodyc \;
foreach n $__field_list {
if {[llength $n] == 2} {
append mbodyc \
{set } [lindex $n 0] { } [list [lindex $n 1]] \;
}
}
}
append mbodyc $body
namespace eval $class [list proc $name $params $mbodyc]
}
proc method {name params body {deleted {}} {del_body {}}} {
set class [uplevel {namespace current}]
set ${class}::__sealed 1
variable ${class}::__field_list
set params [linsert $params 0 this]
set mbodyc {}
append mbodyc {set __this [namespace qualifiers $this]} \;
switch $deleted {
{} {}
ifdeleted {
append mbodyc {if {![namespace exists $__this]} }
append mbodyc \{ $del_body \; return \} \;
}
default {
error "wrong # args: method name args body (ifdeleted body)?"
}
}
set decl {}
foreach n $__field_list {
set n [lindex $n 0]
if {[regexp -- $n\\M $body]} {
if { [regexp -all -- $n\\M $body] == 1
&& [regexp -all -- \\\$$n\\M $body] == 1
&& [regexp -all -- \\\$$n\\( $body] == 0} {
regsub -all \
\\\$$n\\M $body \
"\[set \${__this}::$n\]" body
} else {
append decl { ${__this}::} $n { } $n
regsub -all @$n\\M $body "\${__this}::$n" body
}
}
}
if {$decl ne {}} {
append mbodyc {upvar #0} $decl \;
}
append mbodyc $body
namespace eval $class [list proc $name $params $mbodyc]
}
proc create_this {class} {
upvar this this
namespace eval [namespace qualifiers $this] [list proc \
[namespace tail $this] \
[list name args] \
"eval \[list ${class}::\$name $this\] \$args" \
]
}
proc delete_this {{t {}}} {
if {$t eq {}} {
upvar this this
set t $this
}
set t [namespace qualifiers $t]
if {[namespace exists $t]} {namespace delete $t}
}
proc make_dialog {t w args} {
upvar $t top $w pfx this this
global use_ttk
uplevel [linsert $args 0 make_toplevel $t $w]
catch {wm attributes $top -type dialog}
pave_toplevel $pfx
}
proc make_toplevel {t w args} {
upvar $t top $w pfx this this
if {[llength $args] % 2} {
error "make_toplevel topvar winvar {options}"
}
set autodelete 1
foreach {name value} $args {
switch -exact -- $name {
-autodelete {set autodelete $value}
default {error "unsupported option $name"}
}
}
if {$::root_exists || [winfo ismapped .]} {
regsub -all {::} $this {__} w
set top .$w
set pfx $top
toplevel $top
set ::root_exists 1
} else {
set top .
set pfx {}
}
if {$autodelete} {
wm protocol $top WM_DELETE_WINDOW "
[list delete_this $this]
[list destroy $top]
"
}
}
## auto_mkindex support for class/constructor/method
##
auto_mkindex_parser::command class {name body} {
variable parser
variable contextStack
set contextStack [linsert $contextStack 0 $name]
$parser eval [list _%@namespace eval $name] $body
set contextStack [lrange $contextStack 1 end]
}
auto_mkindex_parser::command constructor {name args} {
variable index
variable scriptFile
append index [list set auto_index([fullname $name])] \
[format { [list source [file join $dir %s]]} \
[file split $scriptFile]] "\n"
}
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