1 # git-gui simple class/object fake-alike
2 # Copyright (C) 2007 Shawn Pearce
4 proc class {class body} {
5 if {[namespace exists $class]} {
6 error "class $class already declared"
8 namespace eval $class "
11 variable __field_list {}
12 variable __field_array
16 concat \[list ${class}::\$name \$this\] \$args
19 namespace eval $class $body
22 proc field {name args} {
23 set class [uplevel {namespace current}]
24 variable ${class}::__sealed
25 variable ${class}::__field_array
27 switch [llength $args] {
28 0 { set new [list $name] }
29 1 { set new [list $name [lindex $args 0]] }
30 default { error "wrong # args: field name value?" }
34 error "class $class is sealed (cannot add new fields)"
37 if {[catch {set old $__field_array($name)}]} {
38 variable ${class}::__field_list
39 lappend __field_list $new
40 set __field_array($name) 1
42 error "field $name already declared"
46 proc constructor {name params body} {
47 set class [uplevel {namespace current}]
48 set ${class}::__sealed 1
49 variable ${class}::__field_list
52 append mbodyc {set this } $class
53 append mbodyc {::__o[incr } $class {::__nextid]::__d} \;
54 append mbodyc {create_this } $class \;
55 append mbodyc {set __this [namespace qualifiers $this]} \;
57 if {$__field_list ne {}} {
58 append mbodyc {upvar #0}
59 foreach n $__field_list {
61 append mbodyc { ${__this}::} $n { } $n
62 regsub -all @$n\\M $body "\${__this}::$n" body
65 foreach n $__field_list {
66 if {[llength $n] == 2} {
68 {set } [lindex $n 0] { } [list [lindex $n 1]] \;
73 namespace eval $class [list proc $name $params $mbodyc]
76 proc method {name params body {deleted {}} {del_body {}}} {
77 set class [uplevel {namespace current}]
78 set ${class}::__sealed 1
79 variable ${class}::__field_list
80 set params [linsert $params 0 this]
83 append mbodyc {set __this [namespace qualifiers $this]} \;
88 append mbodyc {if {![namespace exists $__this]} }
89 append mbodyc \{ $del_body \; return \} \;
92 error "wrong # args: method name args body (ifdeleted body)?"
97 foreach n $__field_list {
99 if {[regexp -- $n\\M $body]} {
100 if { [regexp -all -- $n\\M $body] == 1
101 && [regexp -all -- \\\$$n\\M $body] == 1
102 && [regexp -all -- \\\$$n\\( $body] == 0} {
105 "\[set \${__this}::$n\]" body
107 append decl { ${__this}::} $n { } $n
108 regsub -all @$n\\M $body "\${__this}::$n" body
113 append mbodyc {upvar #0} $decl \;
116 namespace eval $class [list proc $name $params $mbodyc]
119 proc create_this {class} {
121 namespace eval [namespace qualifiers $this] [list proc \
122 [namespace tail $this] \
124 "eval \[list ${class}::\$name $this\] \$args" \
128 proc delete_this {{t {}}} {
133 set t [namespace qualifiers $t]
134 if {[namespace exists $t]} {namespace delete $t}
137 proc make_toplevel {t w args} {
138 upvar $t top $w pfx this this
140 if {[llength $args] % 2} {
141 error "make_toplevel topvar winvar {options}"
144 foreach {name value} $args {
145 switch -exact -- $name {
146 -autodelete {set autodelete $value}
147 default {error "unsupported option $name"}
151 if {[winfo ismapped .]} {
152 regsub -all {::} $this {__} w
162 wm protocol $top WM_DELETE_WINDOW "
163 [list delete_this $this]
170 ## auto_mkindex support for class/constructor/method
172 auto_mkindex_parser::command class {name body} {
174 variable contextStack
175 set contextStack [linsert $contextStack 0 $name]
176 $parser eval [list _%@namespace eval $name] $body
177 set contextStack [lrange $contextStack 1 end]
179 auto_mkindex_parser::command constructor {name args} {
182 append index [list set auto_index([fullname $name])] \
183 [format { [list source [file join $dir %s]]} \
184 [file split $scriptFile]] "\n"