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# TCL objectized library for PD api
# by Federico Ferri <mescalinum@gmail.com> - 2007
package provide pdlib 0.1
package require Tcl 8.5
set verbose 0
namespace eval ::pd {
proc add_inlet {self sel} {
if $::verbose {post [info level 0]}
variable _
switch -- $sel {
float {
set ptr [new_t_float]
lappend _($self:p_inlet) $ptr
lappend _($self:x_inlet) [floatinlet_new [tclpd_get_object $self] $ptr]
}
symbol {
set ptr [new_t_symbol]
lappend _($self:p_inlet) $ptr
lappend _($self:x_inlet) [symbolinlet_new [tclpd_get_object $self] $ptr]
}
default {
post "inlet creation error: unsupported selector: $sel"
return {}
}
}
return [lindex $_($self:x_inlet) end]
}
proc inlet {self n} {
if {$::verbose} {post [info level 0]}
if {$n <= 0} {return {}}
if {![info exists _($self:p_inlet)] ||
$n >= [llength $_($self:p_inlet)]} {
return -code error "pdlib: error: no such inlet: $n"
}
variable _
return [[lindex $_($self:p_inlet) [expr $n-1]] value]
}
proc add_outlet {self sel} {
if $::verbose {post [info level 0]}
variable _
switch -- $sel {
float {
lappend _($self:x_outlet) \
[outlet_new [tclpd_get_object $self] [gensym "float"]]
}
symbol {
lappend _($self:x_outlet) \
[outlet_new [tclpd_get_object $self] [gensym "symbol"]]
}
list {
lappend _($self:x_outlet) \
[outlet_new [tclpd_get_object $self] [gensym "list"]]
}
default {
return -code error \
"pdlib: outlet creation error: unsupported selector: $sel"
}
}
return [lindex $_($self:x_outlet) end]
}
proc outlet {self n sel args} {
if $::verbose {post [info level 0]}
variable _
set outlet [lindex $_($self:x_outlet) $n]
switch -- $sel {
float {
set v [lindex $args 0]
outlet_float $outlet $v
}
symbol {
set v [lindex $args 0]
outlet_symbol $outlet $v
}
list {
set v [lindex $args 0]
set sz [llength $v]
set aa [new_atom_array $sz]
for {set i 0} {$i < $sz} {incr i} {
set_atom_array $aa $i [lindex $v $i]
}
outlet_list $outlet [gensym "list"] $sz $aa
delete_atom_array $aa $sz
}
bang {
outlet_bang $outlet
}
default {
return -code error "pdlib: outlet: unknown selector: $sel"
}
}
}
proc create_iolets {cn self} {
if $::verbose {post [info level 0]}
variable class_db
variable _
set _($self:p_inlet) {}
set _($self:x_inlet) {}
set _($self:x_outlet) {}
for {set i 0} {$i < [llength $class_db($cn:d_inlet)]} {incr i} {
add_inlet $self [lindex $class_db($cn:d_inlet) $i]
}
for {set i 0} {$i < [llength $class_db($cn:d_outlet)]} {incr i} {
add_outlet $self [lindex $class_db($cn:d_outlet) $i]
}
}
proc call_classmethod {classname self sel args} {
if $::verbose {post [info level 0]}
set m "${classname}_${sel}"
if {[llength [info commands "::$m"]] > 0} {
return [$m $self {*}$args]
}
}
proc class {classname def} {
variable class_db
array set class_db {}
set class_db($classname:d_inlet) {}
set class_db($classname:d_outlet) {}
set def2 [regsub -all -line {#.*$} $def {}]
foreach {id arg} $def2 {
switch -- $id {
inlet {
lappend class_db($classname:d_inlet) $arg
}
outlet {
lappend class_db($classname:d_outlet) $arg
}
default {
proc ::${classname}_${id} {self args} \
"global _; [expand_macros $arg]"
}
}
}
proc ::$classname {self args} "
::pd::create_iolets $classname \$self
::pd::call_classmethod $classname \$self constructor {*}\$args
proc ::\$self {selector args} \"
::pd::call_classmethod $classname \$self \\\$selector {*}\\\$args
\"
return \$self
"
tclpd_class_new $classname 3
}
proc expand_macros {body} {
# from poe.tcl by Mathieu Bouchard
return [regsub -all @(\\\$?\[\\w\\?\]+) $body _(\$self:\\1)]
}
proc post {args} {
poststring2 [concat {*}$args]
}
proc assert= {a b} {
if {$a != $b} {
post "ASSERTION FAILED: \"$a\" == \"$b\""
return 0
}
return 1
}
proc args {} {
return [uplevel 1 "llength \$args"]
}
proc arg_float {n} {
set v [uplevel 1 "lindex \$args $n"]
foreach {selector value} $v {break}
assert= $selector "float"
return $value
}
proc arg_int {n} {
set v [uplevel 1 "lindex \$args $n"]
foreach {selector value} $v {break}
assert= $selector "float"
return [expr {int($value)}]
}
proc arg_symbol {n} {
set v [uplevel 1 "lindex \$args $n"]
foreach {selector value} $v {break}
assert= $selector "symbol"
return $value
}
}
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