commit 1c1efc0fe6d306556c1f9fee1444fbf617c7a120
Author: Simon From Jakobsen <sfj@skov.dk>
Date:   Thu Jul 18 12:44:39 2024 +0000

    init, benchmark, vim syntax

diff --git a/benchmark.stela b/benchmark.stela
new file mode 100644
index 0000000..38fd2ba
--- /dev/null
+++ b/benchmark.stela
@@ -0,0 +1,101 @@
+
+class HouseSettings {
+    public attribute Settings: [int; 10];
+
+    operation get(id: int) -> int { return 0; }
+    operation set(id: int, value: int) {}
+}
+
+enumeration DoorState {
+    Closed,
+    Open,
+}
+
+derivable class GenericDoorControl {
+    attribute Runtime: int;
+    attribute SensorState: DoorState;
+
+    operation Close() {}
+    operation Open() {}
+
+    operation SetRuntime(time: int) {}
+    operation State() -> DoorState { return DoorState::Closed; }
+}
+
+class DoorControl derives GenericDoorControl {
+    associate itsHouseSettings: HouseSettings;
+
+    attribute State: DoorState;
+    attribute locked: bool;
+
+    operation SetState(state: DoorState) {}
+    operation GetState() -> DoorState { return DoorState::Closed; }
+
+    operation Lock() { this.locked = true; }
+    operation Unlock() { this.locked = false; }
+
+    state_machine {
+        entry {
+            transition DoorControl;
+        }
+        DoorControl {
+            state_machine "Door operation" {
+                initial {
+                    transition Closing {
+                        SetState(DoorState::Closed);
+                    }
+                }
+                Closing {
+                    entry {
+                        Lock();
+                    }
+                    exit {
+                        Unlock();
+                    }
+                    transition Opening {
+                        SetState(DoorState::Open);
+                    };
+                }
+                Opening {
+                    state_machine {
+                        initial {
+                            transition Unlocked;
+                        }
+                        Unlocked {
+                            ThreadSleepSeconds(1);
+                            if this.locked
+                                transition Unlocked
+                            else
+                                transition final {
+                                    SetState(DoorState::Open);
+                                };
+                        }
+                    }
+                }
+            }
+            state_machine "Check sensor" {
+                initial {
+                    transition Check;
+                }
+                Check {
+                    ThreadSleepSeconds(1);
+                    transition Check;
+                }
+            }
+        }
+    }
+}
+
+class WinterGardenControl {
+    associate itsHouseSettings: HouseSettings;
+    associate itsDoorControl: &[HouseSettings];
+
+    public attribute NofDoors: int;
+
+    operation SetState(amount: int) {}
+    operation SetDoors(amount: int) {}
+
+    operation GetState() -> DoorState;
+    operation GetState(door: int) -> DoorState;
+}
+
diff --git a/stela.vim b/stela.vim
new file mode 100644
index 0000000..20b8351
--- /dev/null
+++ b/stela.vim
@@ -0,0 +1,50 @@
+" Vim syntax file
+" Language: STate machine Event LAnguage
+" Maintainer: Simon
+" Latest Revision: 17 July 2024
+
+if exists("b:current_syntax")
+  finish
+endif
+
+syn keyword Keyword return if else
+syn keyword Keyword enumeration derivable derives class public private
+syn keyword Keyword operation attribute associate state_machine
+syn keyword Keyword transition
+syn keyword Special initial final entry exit
+syn keyword Type void int float bool
+syn keyword Boolean true false
+syn keyword Identifier this
+
+syn match Operator '-'
+syn match Operator '->'
+syn match Operator ':'
+syn match Operator '::'
+syn match Operator '='
+syn match Operator '+'
+syn match Operator '\*'
+syn match Operator ';'
+syn match Operator '\.'
+syn match Operator ','
+
+syn match Number '\d\+'
+syn match Number '[-+]\d\+'
+
+syn match Float '[-+]\d\+\.\d*'
+syn match Float '[-+]\=\d[[:digit:]]*[eE][\-+]\=\d\+'
+syn match Float '\d[[:digit:]]*[eE][\-+]\=\d\+'
+syn match Float '[-+]\=\d[[:digit:]]*\.\d*[eE][\-+]\=\d\+'
+syn match Float '\d[[:digit:]]*\.\d*[eE][\-+]\=\d\+'
+
+syn region String   start=+"+  skip=+\\"+  end=+"+
+
+syn keyword Todo contained TODO FIXME XXX NOTE
+syn match Comment "#.*$" contains=Todo
+syn match Comment "//.*$" contains=Todo
+
+syn match Function '[a-zA-Z_]\w*\ze('
+
+syn region stelaBlock start="{" end="}" transparent fold
+
+let b:current_syntax = "stela"
+