factor out remote_object method

[scpubgit/TenDotTcl.git] / ten / ten.tcl

diff --git a/ten/ten.tcl b/ten/ten.tcl
index 15be14d..fed99af 100644 (file)
--- a/ten/ten.tcl
+++ b/ten/ten.tcl
@@ -1,9 +1,13 @@
-package require Tcl 8.4
+package require Tcl 8.5
 
 package require snit
+package require json::write
+package require json
 
 namespace eval ::ten:: {
   set library [file dirname [info script]]
+
+  proc nofuture {args} {}
 }
 
 snit::type ten::connector::perl {
@@ -40,8 +44,34 @@ snit::type ten::connection {
     ]
   }
 
-  method Receive {$line} {
-    puts $line
+  method Receive {line} {
+    set tcl_line [ json::json2dict $line ]
+    set type [ lindex $tcl_line 0 ]
+    set rest [ lrange $tcl_line 1 end ]
+    $self "receive_$type" {*}$rest
+  }
+
+  method receive_call_free {future_id id args} {
+    $self receive_call $future_id $id "" {*}$args
+    $self receive_free $id
+  }
+
+  method receive_call {future_id id args} {
+    if {$future_id == "NULL"} {
+      set future ten::nofuture
+    } else {
+      set future $future_id
+    }
+    $self Invoke $future $id {*}$args
+  }
+
+  method receive_free {id} {
+    $id free
+  }
+
+  method Invoke {future local ctx method args} {
+    set result [$local $method {*}$args]
+    $future done $result
   }
 
   method ChannelClosed {} {
@@ -50,16 +80,33 @@ snit::type ten::connection {
 
   method send {message_type args} {
     set future [ten::future %AUTO%]
-    set call_args [concat $message_type $future $args] 
+    set call_args [list \
+      [ json::write string $message_type ] \
+      [ json::write string $future ] \
+      {*}$args
+    ]
+    $self Send $call_args
+    return $future
+  }
+
+  method Send {to_send} {
+    set send_this [ json::write array {*}$to_send ]
+    puts $options(-send_to_fh) $send_this
+  }
+
+  method remote_object {id} {
+    return [ten::handle %AUTO% -connection $self -id $id]
   }
+
 }
 
 snit::type ten::future {
 
-  variable callbacks
+  variable callbacks ""
   variable is_ready 0
   variable result ""
   variable failure ""
+  variable retain_count 1
   
   method done {args} {
     if [$self is_ready] {
@@ -78,15 +125,27 @@ snit::type ten::future {
   }
 
   method on_ready {cb_code} {
-    lappend callbacks [list ready $cb_code]
+    if [$self is_ready] {
+      eval [concat $cb_code $self]
+    } else {
+      lappend callbacks [list ready $cb_code]
+    }
   }
 
   method on_done {cb_code} {
-    lappend callbacks [list done $cb_code]
+    if [llength $result] {
+      eval [concat $cb_code [list $result]]
+    } else {
+      lappend callbacks [list done $cb_code]
+    }
   }
 
   method on_fail {cb_code} {
-    lappend callbacks [list fail $cb_code]
+    if [llength $failure] {
+      eval [concat $cb_code [list $failure]]
+    } else {
+      lappend callbacks [list fail $cb_code]
+    }
   }
 
   method MarkReady {} {
@@ -139,9 +198,33 @@ snit::type ten::future {
     return $failure
   }
 
-  method await {} {
+  method await_ready {} {
     vwait "${selfns}::is_ready"
   }
+
+  method await_get {} {
+    $self retain
+    $self await_ready
+    if [$self is_failure] {
+      set err [$self failure]
+      $self free
+      error $err
+    }
+    set res [$self get]
+    $self free
+    return $res
+  }
+
+  method retain {} {
+    incr retain_count
+  }
+
+  method free {} {
+    set retain_count [ expr $retain_count - 1 ]
+    if {$retain_count == 0} {
+      $self destroy
+    }
+  }
 }
 
 snit::type ten::read_channel {
@@ -163,12 +246,25 @@ snit::type ten::read_channel {
       }
     } else {
       if [llength $options(-on_line_call)] {
-        while {[llength [set line [gets $chan]]] > 0} {
-          eval [concat $options(-on_line_call) $line]
+        while {[string length [set line [gets $chan]]] > 0} {
+          eval [concat $options(-on_line_call) [ list $line ]]
         }
       }
     }
   }
 }
 
+snit::type ten::handle {
+  option -connection
+  option -id
+
+  method call {name args} {
+    return [[$self start $name {*}$args] await_get]
+  }
+
+  method start {name args} {
+    $options(-connection) send call [json::write string $options(-id)] 0 [json::write string $name] {*}$args
+  }
+}
+
 package provide ten 0.0.1