added delay to parser

TODO.md

@@ -23,6 +23,6 @@
 - [ ] PlantUML parser
 - [ ] (Message numbering)
 - [ ] Mainframes
-- [ ] Different types of groups (alt/loop/etc.)
+- [x] Different types of groups (alt/loop/etc.)
 - [ ] Delays
 - [ ] Auto-fit in parent

gallery/doc_examples.typ

@@ -0,0 +1,689 @@
+#import "../src/lib.typ": from-plantuml
+
+#set page(width: auto, height: auto)
+
+#let examples = (
+  (
+    [Basic Examples],
+    ```
+    @startuml
+    Alice -> Bob: Authentication Request
+    Bob --> Alice: Authentication Response
+
+    Alice -> Bob: Another authentication Request
+    Alice <-- Bob: Another authentication Response
+    @enduml
+    ```
+  ),
+  (
+    [Declaring participant],
+    ```
+    @startuml
+    participant Participant as Foo
+    actor       Actor       as Foo1
+    boundary    Boundary    as Foo2
+    control     Control     as Foo3
+    entity      Entity      as Foo4
+    database    Database    as Foo5
+    collections Collections as Foo6
+    queue       Queue       as Foo7
+    Foo -> Foo1 : To actor 
+    Foo -> Foo2 : To boundary
+    Foo -> Foo3 : To control
+    Foo -> Foo4 : To entity
+    Foo -> Foo5 : To database
+    Foo -> Foo6 : To collections
+    Foo -> Foo7: To queue
+    @enduml
+    ```
+  ),
+  (
+    [Declaring participant (2)],
+    ```
+    @startuml
+    actor Bob #red
+    ' The only difference between actor
+    'and participant is the drawing
+    participant Alice
+    participant "I have a really\nlong name" as L #99FF99
+    /' You can also declare:
+      participant L as "I have a really\nlong name"  #99FF99
+      '/
+
+    Alice->Bob: Authentication Request
+    Bob->Alice: Authentication Response
+    Bob->L: Log transaction
+    @enduml
+    ```
+  ),
+  (
+    [Use non-letters in participants],
+    ```
+    @startuml
+    Alice -> "Bob()" : Hello
+    "Bob()" -> "This is very\nlong" as Long
+    ' You can also declare:
+    ' "Bob()" -> Long as "This is very\nlong"
+    Long --> "Bob()" : ok
+    @enduml
+    ```
+  ),
+  (
+    [Message to Self],
+    ```
+    @startuml
+    Alice -> Alice: This is a signal to self.\nIt also demonstrates\nmultiline \ntext
+    @enduml
+    ```
+  ),
+  (
+    [Message to Self (2)],
+    ```
+    @startuml
+    Alice <- Alice: This is a signal to self.\nIt also demonstrates\nmultiline \ntext
+    @enduml
+    ```
+  ),
+  (
+    [Change arrow style],
+    ```
+    @startuml
+    Bob ->x Alice
+    Bob -> Alice
+    Bob ->> Alice
+    Bob -\ Alice
+    Bob \\- Alice
+    Bob //-- Alice
+
+    Bob ->o Alice
+    Bob o\\-- Alice
+
+    Bob <-> Alice
+    Bob <->o Alice
+    @enduml
+    ```
+  ),
+  (
+    [Grouping message],
+    ```
+    @startuml
+    Alice -> Bob: Authentication Request
+
+    alt successful case
+
+        Bob -> Alice: Authentication Accepted
+
+    else some kind of failure
+
+        Bob -> Alice: Authentication Failure
+        group My own label
+        Alice -> Log : Log attack start
+            loop 1000 times
+                Alice -> Bob: DNS Attack
+            end
+        Alice -> Log : Log attack end
+        end
+
+    else Another type of failure
+
+      Bob -> Alice: Please repeat
+
+    end
+    @enduml
+    ```
+  ),
+  (
+    [Secondary group label],
+    ```
+    @startuml
+    Alice -> Bob: Authentication Request
+    Bob -> Alice: Authentication Failure
+    group My own label [My own label 2]
+        Alice -> Log : Log attack start
+        loop 1000 times
+            Alice -> Bob: DNS Attack
+        end
+        Alice -> Log : Log attack end
+    end
+    @enduml
+    ```
+  ),
+  (
+    [Notes on messages],
+    ```
+    @startuml
+    Alice->Bob : hello
+    note left: this is a first note
+
+    Bob->Alice : ok
+    note right: this is another note
+
+    Bob->Bob : I am thinking
+    note left
+    a note
+    can also be defined
+    on several lines
+    end note
+    @enduml
+    ```
+  ),
+  (
+    [Some other notes],
+    ```
+    @startuml
+    participant Alice
+    participant Bob
+    note left of Alice #aqua
+    This is displayed
+    left of Alice.
+    end note
+
+    note right of Alice: This is displayed right of Alice.
+
+    note over Alice: This is displayed over Alice.
+
+    note over Alice, Bob #FFAAAA: This is displayed\n over Bob and Alice.
+
+    note over Bob, Alice
+    This is yet another
+    example of
+    a long note.
+    end note
+    @enduml
+    ```
+  ),
+  (
+    [Changing notes shape \[hnote, rnote\]],
+    ```
+    @startuml
+    caller -> server : conReq
+    hnote over caller : idle
+    caller <- server : conConf
+    rnote over server
+     "r" as rectangle
+     "h" as hexagon
+    endrnote
+    rnote over server
+     this is
+     on several
+     lines
+    endrnote
+    hnote over caller
+     this is
+     on several
+     lines
+    endhnote
+    @enduml
+    ```
+  ),
+  (
+    [Note over all participants \[across\]],
+    ```
+    @startuml
+    Alice->Bob:m1
+    Bob->Charlie:m2
+    note over Alice, Charlie: Old method for note over all part. with:\n ""note over //FirstPart, LastPart//"".
+    note across: New method with:\n""note across""
+    Bob->Alice
+    hnote across:Note across all part.
+    @enduml
+    ```
+  ),
+  (
+    [Several notes aligned at the same level \[/\]],
+    ```
+    @startuml
+    note over Alice : initial state of Alice
+    note over Bob : initial state of Bob
+    Bob -> Alice : hello
+    @enduml
+    ```
+  ),
+  (
+    [Several notes aligned at the same level \[/\] (2)],
+    ```
+    @startuml
+    note over Alice : initial state of Alice
+    / note over Bob : initial state of Bob
+    Bob -> Alice : hello
+    @enduml
+    ```
+  ),
+  (
+    [Divider or separator],
+    ```
+    @startuml
+
+    == Initialization ==
+
+    Alice -> Bob: Authentication Request
+    Bob --> Alice: Authentication Response
+
+    == Repetition ==
+
+    Alice -> Bob: Another authentication Request
+    Alice <-- Bob: another authentication Response
+
+    @enduml
+    ```
+  ),
+  (
+    [Delay],
+    ```
+    @startuml
+
+    Alice -> Bob: Authentication Request
+    ...
+    Bob --> Alice: Authentication Response
+    ...5 minutes later...
+    Bob --> Alice: Good Bye !
+
+    @enduml
+    ```
+  ),
+  (
+    [Space],
+    ```
+    @startuml
+
+    Alice -> Bob: message 1
+    Bob --> Alice: ok
+    |||
+    Alice -> Bob: message 2
+    Bob --> Alice: ok
+    ||45||
+    Alice -> Bob: message 3
+    Bob --> Alice: ok
+
+    @enduml
+    ```
+  ),
+  (
+    [Lifeline Activation and Destruction],
+    ```
+    @startuml
+    participant User
+
+    User -> A: DoWork
+    activate A
+
+    A -> B: << createRequest >>
+    activate B
+
+    B -> C: DoWork
+    activate C
+    C --> B: WorkDone
+    destroy C
+
+    B --> A: RequestCreated
+    deactivate B
+
+    A -> User: Done
+    deactivate A
+
+    @enduml
+    ```
+  ),
+  (
+    [Lifeline Activation and Destruction (2)],
+    ```
+    @startuml
+    participant User
+
+    User -> A: DoWork
+    activate A #FFBBBB
+
+    A -> A: Internal call
+    activate A #DarkSalmon
+
+    A -> B: << createRequest >>
+    activate B
+
+    B --> A: RequestCreated
+    deactivate B
+    deactivate A
+    A -> User: Done
+    deactivate A
+
+    @enduml
+    ```
+  ),
+  /*(
+    [Lifeline Activation and Destruction (3)],
+    ```
+    @startuml
+    'autoactivate on
+    alice -> bob : hello
+    bob -> bob : self call
+    bill -> bob /'#005500'/ : hello from thread 2
+    bob -> george ** : create
+    return done in thread 2
+    return rc
+    bob -> george !! : delete
+    return success
+
+    @enduml
+    ```
+  ),*/
+  (
+    [Return],
+    ```
+    @startuml
+    Bob -> Alice : hello
+    activate Alice
+    Alice -> Alice : some action
+    return bye
+    @enduml
+    ```
+  ),
+  (
+    [Participant creation],
+    ```
+    @startuml
+    Bob -> Alice : hello
+
+    create Other
+    Alice -> Other : new
+
+    create /'control'/ String
+    Alice -> String
+    note right : You can also put notes!
+
+    Alice --> Bob : ok
+
+    @enduml
+    ```
+  ),
+  (
+    [Shortcut syntax for activation, deactivation, creation],
+    ```
+    @startuml
+    alice -> bob ++ : hello
+    bob -> bob ++ : self call
+    bob -> bib ++ /' #005500'/ : hello
+    bob -> george ** : create
+    return done
+    return rc
+    bob -> george !! : delete
+    return success
+    @enduml
+    ```
+  ),
+  (
+    [Shortcut syntax for activation, deactivation, creation (2)],
+    ```
+    @startuml
+    alice   ->  bob     ++   : hello1
+    bob     ->  charlie --++ : hello2
+    charlie --> alice   --   : ok
+    @enduml
+    ```
+  ),
+  (
+    [Shortcut syntax for activation, deactivation, creation (3)],
+    ```
+    @startuml
+    alice -> bob   ++ /'#gold'/: hello
+    bob   -> alice --++ /'#gold'/: you too
+    alice -> bob   --: step1
+    alice -> bob   : step2
+    @enduml
+    @enduml
+    ```
+  ),
+  (
+    [Incoming and outgoing messages],
+    ```
+    @startuml
+    [-> A: DoWork
+
+    activate A
+
+    A -> A: Internal call
+    activate A
+
+    A ->] : << createRequest >>
+
+    A<--] : RequestCreated
+    deactivate A
+    [<- A: Done
+    deactivate A
+    @enduml
+    ```
+  ),
+  (
+    [Incoming and outgoing messages (2)],
+    ```
+    @startuml
+    participant Alice
+    participant Bob #lightblue
+    Alice -> Bob
+    Bob -> Carol
+    ...
+    [-> Bob
+    [o-> Bob
+    [o->o Bob
+    [x-> Bob
+    ...
+    [<- Bob
+    [x<- Bob
+    ...
+    Bob ->]
+    Bob ->o]
+    Bob o->o]
+    Bob ->x]
+    ...
+    Bob <-]
+    Bob x<-]
+
+    @enduml
+    ```
+  ),
+  (
+    [Short arrows for incoming and outgoing messages],
+    ```
+    @startuml
+    ?-> Alice    : ""?->""\n**short** to actor1
+    [-> Alice    : ""[->""\n**from start** to actor1
+    [-> Bob      : ""[->""\n**from start** to actor2
+    ?-> Bob      : ""?->""\n**short** to actor2
+    Alice ->]    : ""->]""\nfrom actor1 **to end**
+    Alice ->?    : ""->?""\n**short** from actor1
+    Alice -> Bob : ""->"" \nfrom actor1 to actor2
+    @enduml
+    ```
+  ),
+  (
+    [Normal arrow],
+    ```
+    @startuml
+    participant Alice as a
+    participant Bob   as b
+    a ->     b : ""->   ""
+    a ->>    b : ""->>  ""
+    a -\     b : ""-\   ""
+    a -\\    b : ""-\\\\""
+    a -/     b : ""-/   ""
+    a -//    b : ""-//  ""
+    a ->x    b : ""->x  ""
+    a x->    b : ""x->  ""
+    a o->    b : ""o->  ""
+    a ->o    b : ""->o  ""
+    a o->o   b : ""o->o ""
+    a <->    b : ""<->  ""
+    a o<->o  b : ""o<->o""
+    a x<->x  b : ""x<->x""
+    a ->>o   b : ""->>o ""
+    a -\o    b : ""-\o  ""
+    a -\\o   b : ""-\\\\o""
+    a -/o    b : ""-/o  ""
+    a -//o   b : ""-//o ""
+    a x->o   b : ""x->o ""
+    @enduml
+    ```
+  ),
+  (
+    [Itself arrow],
+    ```
+    @startuml
+    participant Alice as a
+    participant Bob   as b
+    a ->     a : ""->   ""
+    a ->>    a : ""->>  ""
+    a -\     a : ""-\   ""
+    a -\\    a : ""-\\\\""
+    a -/     a : ""-/   ""
+    a -//    a : ""-//  ""
+    a ->x    a : ""->x  ""
+    a x->    a : ""x->  ""
+    a o->    a : ""o->  ""
+    a ->o    a : ""->o  ""
+    a o->o   a : ""o->o ""
+    a <->    a : ""<->  ""
+    a o<->o  a : ""o<->o""
+    a x<->x  a : ""x<->x""
+    a ->>o   a : ""->>o ""
+    a -\o    a : ""-\o  ""
+    a -\\o   a : ""-\\\\o""
+    a -/o    a : ""-/o  ""
+    a -//o   a : ""-//o ""
+    a x->o   a : ""x->o ""
+    @enduml
+    ```
+  ),
+  (
+    [Incoming messages (with '|')],
+    ```
+    @startuml
+    participant Alice as a
+    participant Bob   as b
+    [->      b : ""[->   ""
+    [->>     b : ""[->>  ""
+    [-\      b : ""[-\   ""
+    [-\\     b : ""[-\\\\""
+    [-/      b : ""[-/   ""
+    [-//     b : ""[-//  ""
+    [->x     b : ""[->x  ""
+    [x->     b : ""[x->  ""
+    [o->     b : ""[o->  ""
+    [->o     b : ""[->o  ""
+    [o->o    b : ""[o->o ""
+    [<->     b : ""[<->  ""
+    [o<->o   b : ""[o<->o""
+    [x<->x   b : ""[x<->x""
+    [->>o    b : ""[->>o ""
+    [-\o     b : ""[-\o  ""
+    [-\\o    b : ""[-\\\\o""
+    [-/o     b : ""[-/o  ""
+    [-//o    b : ""[-//o ""
+    [x->o    b : ""[x->o ""
+    @enduml
+    ```
+  ),
+  (
+    [Outgoing messages (with '|')],
+    ```
+    @startuml
+    participant Alice as a
+    participant Bob   as b
+    a ->]      : ""->]   ""
+    a ->>]     : ""->>]  ""
+    a -\]      : ""-\]   ""
+    a -\\]     : ""-\\\\]""
+    a -/]      : ""-/]   ""
+    a -//]     : ""-//]  ""
+    a ->x]     : ""->x]  ""
+    a x->]     : ""x->]  ""
+    a o->]     : ""o->]  ""
+    a ->o]     : ""->o]  ""
+    a o->o]    : ""o->o] ""
+    a <->]     : ""<->]  ""
+    a o<->o]   : ""o<->o]""
+    a x<->x]   : ""x<->x]""
+    a ->>o]    : ""->>o] ""
+    a -\o]     : ""-\o]  ""
+    a -\\o]    : ""-\\\\o]""
+    a -/o]     : ""-/o]  ""
+    a -//o]    : ""-//o] ""
+    a x->o]    : ""x->o] ""
+    @enduml
+    ```
+  ),
+  (
+    [Short incoming (with '?')],
+    ```
+    @startuml
+    participant Alice as a
+    participant Bob   as b
+    a ->     b : //Long long label//
+    ?->      b : ""?->   ""
+    ?->>     b : ""?->>  ""
+    ?-\      b : ""?-\   ""
+    ?-\\     b : ""?-\\\\""
+    ?-/      b : ""?-/   ""
+    ?-//     b : ""?-//  ""
+    ?->x     b : ""?->x  ""
+    ?x->     b : ""?x->  ""
+    ?o->     b : ""?o->  ""
+    ?->o     b : ""?->o  ""
+    ?o->o    b : ""?o->o ""
+    ?<->     b : ""?<->  ""
+    ?o<->o   b : ""?o<->o""
+    ?x<->x   b : ""?x<->x""
+    ?->>o    b : ""?->>o ""
+    ?-\o     b : ""?-\o  ""
+    ?-\\o    b : ""?-\\\\o ""
+    ?-/o     b : ""?-/o  ""
+    ?-//o    b : ""?-//o ""
+    ?x->o    b : ""?x->o ""
+    @enduml
+    ```
+  ),
+  (
+    [Short outgoing (with '?')],
+    ```
+    @startuml
+    participant Alice as a
+    participant Bob   as b
+    a ->     b : //Long long label//
+    a ->?      : ""->?   ""
+    a ->>?     : ""->>?  ""
+    a -\?      : ""-\?   ""
+    a -\\?     : ""-\\\\?""
+    a -/?      : ""-/?   ""
+    a -//?     : ""-//?  ""
+    a ->x?     : ""->x?  ""
+    a x->?     : ""x->?  ""
+    a o->?     : ""o->?  ""
+    a ->o?     : ""->o?  ""
+    a o->o?    : ""o->o? ""
+    a <->?     : ""<->?  ""
+    a o<->o?   : ""o<->o?""
+    a x<->x?   : ""x<->x?""
+    a ->>o?    : ""->>o? ""
+    a -\o?     : ""-\o?  ""
+    a -\\o?    : ""-\\\\o?""
+    a -/o?     : ""-/o?  ""
+    a -//o?    : ""-//o? ""
+    a x->o?    : ""x->o? ""
+    @enduml
+    ```
+  )
+)
+
+#{
+  for (title, uml) in examples {
+    heading(title)
+    box(
+      stroke: gray,
+      inset: 1em,
+      stack(
+        dir: ltr,
+        spacing: 1em,
+        raw(uml.text, block: true, lang: "plantuml"),
+        from-plantuml(uml)
+      )
+    )
+    pagebreak(weak: true)
+  }
+}

gallery/example1.typ

@@ -78,6 +78,15 @@ Alice <-- Bob: Another authentication Response
   _seq("Bob", "Alice", comment: "another authentication Response", dashed: true)
 })
 
+#chronos.diagram({
+  import chronos: *
+  _seq("Alice", "Bob", comment: "Authentication Request")
+  _delay()
+  _seq("Bob", "Alice", comment: "Authentication Response")
+  _delay(name: "5 minutes later")
+  _seq("Bob", "Alice", comment: "Good Bye !")
+})
+
 #chronos.diagram({
   import chronos: *
   _seq("Alice", "Bob", comment: "message 1")

gallery/plantuml_test.typ

@@ -0,0 +1,271 @@
+#import "../src/lib.typ": from-plantuml
+
+#set page(width: auto, height: auto)
+
+/*
+#from-plantuml(```
+@startuml
+
+actor User as usr
+participant can_message as can
+control kartculator as kc
+queue XF as xf
+entity Drive as drive
+entity Steering as steering
+
+usr -\ xf : set message "move"
+xf -> can : new value on joystick
+
+== If X axis change value ==
+can -> kc : calculate new position
+kc -> can : build message
+can -> steering : set new position
+
+== If Y axis change value ==
+can -> kc : calculate new torque
+kc -> can : build message
+can -> xf : set message "torque"
+xf -> drive : set new torque
+
+@enduml
+```)
+
+#pagebreak(weak: true)
+
+#from-plantuml(```
+@startuml
+
+actor CAN_BUS as bus
+participant interrupt as ISR
+queue XF as xf
+participant ecan as ecan
+participant canInterface as can
+control canMessageController as msg
+
+
+bus -\\ ISR ++  : can message
+ISR -> can : newMsg
+can -> ecan : read
+ecan --> can : message
+can -> xf : POST XF
+destroy ISR
+    group TICK XF
+xf o-> can : receiveCan()
+can -> msg : processIncoming()
+msg -> can : create message
+can -> xf : POST XF
+    end
+    group TICK XF
+xf o-> can : sendCan()
+can -> ecan : write
+ecan -\\ bus : can message
+    end
+
+@enduml
+```)
+
+#pagebreak(weak: true)
+*/
+
+/*
+#from-plantuml(```
+@startuml
+
+participant "Behavior::StateMachine" as sm
+participant Dispatcher as d
+participant TimeoutManager as tm
+entity "Event::Timeout" as t
+queue "TimeoutManager::timeouts_" as timeouts
+
+autoactivate off
+|||
+|||
+== Schedule timeout ==
+|||
+sm -> sm++ : scheduleTimeout
+sm -> d ++: getDispatcher
+d --> sm --: dispatcher
+sm -> d --++ : scheduleTimeout
+d -> tm ++: getTimeoutManager
+tm --> d --: timeoutManager
+d -> tm --++ : scheduleTimeout
+tm -> t ** : new
+t --> tm
+tm -> timeouts --++: insert
+
+|||
+|||
+== Decrement timeout (and dispatch) ==
+|||
+loop every tickInterval
+?->> tm ++: tick
+tm -> timeouts : getFront
+timeouts -> t ++
+t --> timeouts
+timeouts --> tm : timeout
+tm -> t  --: decrement
+end
+|||
+note left t
+When timeout is 0,
+dispatch event
+end note
+t -> timeouts : pop
+deactivate timeouts
+t ->? --: pushEvent
+
+|||
+|||
+== Unschedule timeout ==
+|||
+sm -> sm++ : unscheduleTimeout
+sm -> d ++: getDispatcher
+d --> sm --: dispatcher
+sm -> d --++ : unscheduleTimeout
+d -> tm ++: getTimeoutManager
+tm --> d --: timeoutManager
+d -> tm --++ : unscheduleTimeout
+tm -> timeouts --: erase
+timeouts -> t !!
+
+@enduml
+```)
+*/
+
+#pagebreak(weak: true)
+
+#from-plantuml(```
+@startuml
+
+participant Behavior as b
+participant Dispatcher as d
+entity Event as e
+participant EventQueue as eq
+queue "EventQueue::queue_" as q
+
+== Create an Event ==
+|||
+?->> b ++ : GEN
+b -> e ** : new
+b -> b --++ : pushEvent
+e -> b : getBehavior
+b --> e ++: setBehavior
+e --> b --
+b -> d ++ : getDispatcher
+d --> b
+b -> d -- : pushEvent
+d ->? -- : push
+
+
+|||
+|||
+== Push Event  ==
+|||
+?->> d ++: pushEvent
+d -> eq--++: push
+eq -> q ++
+q --> eq
+eq -> q -- : pushEndQueue
+
+|||
+|||
+== Dispatch ==
+|||
+?->> d ++: executeOnce
+d -> q : getFront
+q -> e ++
+e --> q
+q --> d : event
+d -> q : pop
+deactivate q
+d -> d --++ : dispatchEvent
+d -> b ++ : getBehavior
+b --> d
+d -> b -- : process
+b -> b--: processEvent
+
+destroy e
+
+@enduml
+```)
+
+#pagebreak(weak: true)
+
+#from-plantuml(```
+@startuml
+'https://plantuml.com/sequence-diagram
+actor User as usr
+participant "Pb L" as pbL
+participant "Pb R" as pbR
+participant "LED L" as ledL
+participant "LED R" as ledR
+
+
+== Single click ==
+
+group Single click left
+usr -\ pbL ++: pressButton
+usr -\ pbL : releaseButton
+pbL -> ledL --++ : blink
+usr -\ pbL ++: pressButton
+usr -\ pbL : releaseButton
+pbL -> ledL -- : endBlink
+deactivate ledL
+end
+
+group Single click right
+usr -\ pbR ++: pressButton
+usr -\ pbR : releaseButton
+pbR -> ledR --++ : blink
+usr -\ pbR ++: pressButton
+usr -\ pbR : releaseButton
+pbR -> ledR -- : endBlink
+deactivate ledR
+end
+
+== Double click ==
+
+group Double click left
+usr -\ pbL ++: pressButton
+usr -\ pbL : releaseButton
+usr -\ pbL : pressButton
+pbL -> ledL --++ : blink
+note right ledL: blink 3x
+ledL ->x ledL -- : finished
+end
+
+group Double click right
+usr -\ pbR ++: pressButton
+usr -\ pbR : releaseButton
+usr -\ pbR : pressButton
+pbR -> ledR --++ : blink
+note right ledR: blink 3x
+ledR ->x ledR -- : finished
+end
+
+== Long click ==
+
+group Long click left
+usr -\ pbL ++: pressButton
+pbL -> ledR--: blink
+activate ledL
+activate ledR
+usr -\ pbL ++: pressButton
+pbL -> ledR -- : endBlink
+deactivate ledL
+deactivate ledR
+end
+
+group Long click right
+usr -\ pbR ++: pressButton
+pbR -> ledR--: blink
+activate ledL
+activate ledR
+usr -\ pbL ++: pressButton
+pbL -> ledR -- : endBlink
+deactivate ledL
+deactivate ledR
+end
+
+@enduml
+```)

src/diagram.typ

@@ -1,6 +1,7 @@
 #import "utils.typ": get-group-span, fit-canvas
 #import "renderer.typ": render
 #import "participant.typ" as participant: _par, PAR-SPECIALS
+#import "sequence.typ": _seq
 
 #let _gap(size: 20) = {
   return ((
@@ -38,7 +39,9 @@
   let elmts = elements
   let i = 0
 
-  // Flatten groups
+  let activation-history = ()
+
+  // Flatten groups + convert returns
   while i < elmts.len() {
     let elmt = elmts.at(i)
     if elmt.type == "grp" {
@@ -62,6 +65,30 @@
         ),) +
         elmts.slice(i+1)
       )
+    } else if elmt.type == "seq" {
+      if elmt.enable-dst {
+        activation-history.push(elmt)
+      }
+    } else if elmt.type == "evt" {
+      if elmt.event == "enable" {
+        for elmt2 in elmts.slice(0, i).rev() {
+          if elmt2.type == "seq" {
+            activation-history.push(elmt2)
+            break
+          }
+        }
+      }
+    } else if elmt.type == "ret" {
+      if activation-history.len() == 0 {
+        panic("Cannot return if no lifeline is activated")
+      }
+      let seq = activation-history.pop()
+      elmts.at(i) = _seq(
+        seq.p2, seq.p1,
+        comment: elmt.comment,
+        disable-src: true,
+        dashed: true
+      ).first()
     }
     i += 1
   }
@@ -130,6 +157,21 @@
       } else if elmt.side == "right" {
         linked.push("]")
       }
+
+      let pars = none
+      if type(elmt.pos) == str {
+        pars = (elmt.pos,)
+      } else if type(elmt.pos) == array {
+        pars = elmt.pos
+      }
+      if pars != none {
+        for par in pars {
+          if not participant._exists(participants, par) {
+            participants.push(_par(par).first())
+          }
+        }
+      }
+
       last-note = (
         elmt: elmt,
         i: i
@@ -202,7 +244,3 @@
   let canvas = render(participants, elmts)
   fit-canvas(canvas, width: width)
 }
-
-#let from-plantuml(code) = {
-  let code = code.text
-}

src/lib.typ

@@ -1,9 +1,10 @@
 #let version = version(0, 1, 1)
-#import "diagram.typ": diagram, from-plantuml, _gap, _evt, _col
+#import "diagram.typ": diagram, _gap, _evt, _col
+#import "parser.typ": from-plantuml
 
-#import "sequence.typ": _seq
+#import "sequence.typ": _seq, _ret
 #import "group.typ": _grp, _loop, _alt, _opt, _break
 #import "participant.typ": _par
-#import "separator.typ": _sep
+#import "separator.typ": _sep, _delay
 #import "note.typ": _note
 #import "sync.typ": _sync

src/note.typ

@@ -25,6 +25,9 @@
       panic("Aligned notes can only be over a participant (got side '" + side + "')")
     }
   }
+  if color == auto {
+    color = COL-NOTE
+  }
   return ((
     type: "note",
     side: side,

src/participant.typ

@@ -13,6 +13,7 @@
   "queue",
   "custom"
 )
+#let DEFAULT-COLOR = rgb("#E2E2F0")
 
 #let _par(
   name,
@@ -20,11 +21,14 @@
   from-start: true,
   invisible: false,
   shape: "participant",
-  color: rgb("#E2E2F0"),
+  color: DEFAULT-COLOR,
   custom-image: none,
   show-bottom: true,
   show-top: true,
 ) = {
+  if color == auto {
+    color = DEFAULT-COLOR
+  }
   return ((
     type: "par",
     name: name,

src/renderer.typ

@@ -323,6 +323,26 @@
     } else if elmt.type == "gap" {
       y -= elmt.size
 
+    // Delay
+    } else if elmt.type == "delay" {
+      let y0 = y
+      let y1 = y - elmt.size
+      for (i, line) in lifelines.enumerate() {
+        line.lines.push(("delay-start", y0))
+        line.lines.push(("delay-end", y1))
+        lifelines.at(i) = line
+      }
+      if elmt.name != none {
+        let x0 = x-pos.first()
+        let x1 = x-pos.last()
+        shapes += draw.content(
+          ((x0 + x1) / 2, (y0 + y1) / 2),
+          anchor: "center",
+          elmt.name
+        )
+      }
+      y = y1
+    
     // Event
     } else if elmt.type == "evt" {
       let par-name = elmt.participant
@@ -435,6 +455,28 @@
           if event == "destroy" {
             destructions.push((x + lvl * LIFELINE-W / 2, line.at(1)))
           }
+        } else if event == "delay-start" {
+          draw.line(
+            (x, last-y),
+            (x, line.at(1)),
+            stroke: (
+              dash: "dashed",
+              paint: gray.darken(40%),
+              thickness: .5pt
+            )
+          )
+          last-y = line.at(1)
+        } else if event == "delay-end" {
+          draw.line(
+            (x, last-y),
+            (x, line.at(1)),
+            stroke: (
+              dash: "loosely-dotted",
+              paint: gray.darken(40%),
+              thickness: .8pt
+            )
+          )
+          last-y = line.at(1)
         }
       }
 

src/separator.typ

@@ -8,6 +8,14 @@
   ),)
 }
 
+#let _delay(name: none, size: 30) = {
+  return ((
+    type: "delay",
+    name: name,
+    size: size
+  ),)
+}
+
 #let render(x-pos, elmt, y) = {
   let shapes = ()
   y -= Y-SPACE

src/sequence.typ

@@ -4,6 +4,9 @@
 #import "note.typ"
 
 #let get-arrow-marks(sym, color) = {
+  if sym == none {
+    return none
+  }
   if type(sym) == array {
     return sym.map(s => get-arrow-marks(s, color))
   }
@@ -85,6 +88,13 @@
   ),)
 }
 
+#let _ret(comment: none) = {
+  return ((
+    type: "ret",
+    comment: comment
+  ),)
+}
+
 #let render(pars-i, x-pos, participants, elmt, y, lifelines) = {
   let shapes = ()
 
@@ -294,7 +304,7 @@
 
   // Start circle tip
   if is-circle-tip(elmt.start-tip) {
-    shapes += draw.circle(pts.first(), radius: CIRCLE-TIP-RADIUS, stroke: elmt.color, fill: none, name: "_circle-start-tip")
+    shapes += draw.circle(pts.first(), radius: CIRCLE-TIP-RADIUS, stroke: none, fill: elmt.color, name: "_circle-start-tip")
     pts.at(0) = "_circle-start-tip"
   
   // Start cross tip
@@ -316,7 +326,7 @@
 
   // End circle tip
   if is-circle-tip(elmt.end-tip) {
-    shapes += draw.circle(pts.last(), radius: 3, stroke: elmt.color, fill: none, name: "_circle-end-tip")
+    shapes += draw.circle(pts.last(), radius: 3, stroke: none, fill: elmt.color, name: "_circle-end-tip")
     pts.at(pts.len() - 1) = "_circle-end-tip"
   
   // End cross tip