Tasks

Task orchestration is GS's most distinctive feature. Every top-level { } block in your entry file is a task, automatically assigned a sequential ID (id::001, id::002, id::003, ...).

Single Task Programs

If your file has only one task, it runs automatically — no orchestration needed:

{
   fnc main {
       print("hello world!")
   }
}

Multiple Tasks: start and then

When you have multiple tasks, use start to pick the entry point, and then to run tasks sequentially afterward:

{
   fnc main {
       print("task A")
   }
}

{
   fnc main {
      print("task B")
   }
}

{
   fnc main {
       print("task C")
   }
}

start = id::001
then = id::002 | id::003

Output:

task A
task B
task C

start/then are only allowed outside any task block, at the top level of the entry file.

Conditional Task Control: startif and elstart

Inside a task, use startif/elstart to conditionally trigger another task:

{
   fnc main {
       x = 10
       startif x > 5 {
          start = id::003
       } elstart {
          start = id::002
     }
  }
}

{
   fnc main {
       print("condition was false")
    }
}

{
   fnc main {
       print("condition was true")
   }
}

start = id::001

startif/elstart are only allowed inside a task block — outside a task, use start/then instead.

Tasks That Aren't Referenced

If a task isn't referenced by start/then and isn't invoked by another task's startif/elstart, it becomes dead code and never runs.

Next Steps

Continue to Modules and CLI.