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 set args [linsert $args 0 $name $this]
17 return [uplevel [list namespace code $args]]
20 namespace eval $class $body
23 proc field {name args} {
24 set class [uplevel {namespace current}]
25 variable ${class}::__sealed
26 variable ${class}::__field_array
28 switch [llength $args] {
29 0 { set new [list $name] }
30 1 { set new [list $name [lindex $args 0]] }
31 default { error "wrong # args: field name value?" }
35 error "class $class is sealed (cannot add new fields)"
38 if {[catch {set old $__field_array($name)}]} {
39 variable ${class}::__field_list
40 lappend __field_list $new
41 set __field_array($name) 1
43 error "field $name already declared"
47 proc constructor {name params body} {
48 set class [uplevel {namespace current}]
49 set ${class}::__sealed 1
50 variable ${class}::__field_list
53 append mbodyc {set this } $class
54 append mbodyc {::__o[incr } $class {::__nextid]} \;
55 append mbodyc {namespace eval $this {}} \;
57 if {$__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]
86 append mbodyc {if {![namespace exists $this]} }
87 append mbodyc \{ $del_body \; return \} \;
90 error "wrong # args: method name args body (ifdeleted body)?"
95 foreach n $__field_list {
97 if {[regexp -- $n\\M $body]} {
98 if { [regexp -all -- $n\\M $body] == 1
99 && [regexp -all -- \\\$$n\\M $body] == 1
100 && [regexp -all -- \\\$$n\\( $body] == 0} {
101 regsub -all \\\$$n\\M $body "\[set \${this}::$n\]" body
103 append decl { ${this}::} $n { } $n
104 regsub -all @$n\\M $body "\${this}::$n" body
109 append mbodyc {upvar #0} $decl \;
112 namespace eval $class [list proc $name $params $mbodyc]
115 proc delete_this {{t {}}} {
120 if {[namespace exists $t]} {namespace delete $t}
123 proc make_toplevel {t w} {
125 if {[winfo ismapped .]} {
127 regsub -all {::} $this {__} w
138 ## auto_mkindex support for class/constructor/method
140 auto_mkindex_parser::command class {name body} {
142 variable contextStack
143 set contextStack [linsert $contextStack 0 $name]
144 $parser eval [list _%@namespace eval $name] $body
145 set contextStack [lrange $contextStack 1 end]
147 auto_mkindex_parser::command constructor {name args} {
150 append index [list set auto_index([fullname $name])] \
151 [format { [list source [file join $dir %s]]} \
152 [file split $scriptFile]] "\n"