How to call another method in a generated method

Question

Question

Shuheng Liu · Jul 2

#Compiler #ObjectScript #InterSystems IRIS

I have a class with two methods

Class Foo.Bar
{

ClassMethod Helper()
{
// do something
}

ClassMethod Generated() [ CodeMode = objectgenerator ]
{
do ..Helper()
// do something else
}

}

Since the method Generated is run before the class is compiled, the call to do ..Helper() fails. Is there a way around this other than manual inlining?

Product version: IRIS 2023.1

$ZV: IRIS for UNIX (Apple macOS for Apple Silicon) 2023.1.3 (Build 517U) Wed Jan 10 2024 13:24:56 EST

Discussion (3)3

Log in or sign up to continue

score 1 · Answer 1 · 2024-07-02T10:55:23-04:00

The only way I can think of doing this would be to split out the Helper() ClassMethod into its own class, and then ensure the order of compilation is in such a way that the class containing the Helper class method is compiled. Depending on how you're achieving this, could you use the CompileAfter class keyword?

So something like:

Class 1:

Class Foo.Bar.1
{

ClassMethod Helper()
{
// do something
}

}

Class 2:

Class Foo.Bar.2 [ CompileAfter = (Foo.Bar.1) ]
{

ClassMethod Generated() [ CodeMode = objectgenerator ]
{
do ##Class(Foo.Bar.1).Helper()
// do something else
}

}

score 3 · Answer 2 · 2024-07-02T11:05:54-04:00

Only one small addition -- use DependsOn, not CompileAfter. Then ObjectScript compiler makes sure that Foo.Bar.1 is runnable when the Foo.Bar.2 is compiled

https://docs.intersystems.com/iris20241/csp/docbook/Doc.View.cls?KEY=ROB...

score 0 · Answer 3 · 2024-07-03T08:48:42-04:00

GenerateAfter can help here.

///do ##class(Test.GenerateHelper).Generated()
///Hi there!
Class Test.GenerateHelper
{
  ClassMethod Generated() [ CodeMode = objectgenerator, GenerateAfter = Helper ]
  {
    set text = ..Helper()
    do %code.WriteLine(" write """ _ text _ """")
  }

  ClassMethod Helper() As %String
  {
    return "Hi there!"
  }
}