[SOLVED] How to convert Java primitive to boxed type in IntelliJ Structural Replace

How to convert Java primitive to boxed type in IntelliJ Structural Replace

I'm trying to use IntelliJ Structural Search and Replace to overload a suite of setter methods with Optional variants. This needs to honour that the target value may be primitive (e.g. boolean to Optional<Boolean>). Here's the core part of the conversion:

Search:

public static void set($BType$ $BName$, $VType$ $VName$) {
    $body$; // 0 - infinity
}

Replacement:

public static void set($BType$ $BName$, java.util.Optional<$VTypeMightBeBoxed$> $VName$) {
    $VName$.ifPresent(v -> set($BName$, v));
}
public static void set($BType$ $BName$, $VType$ $VName$) {
    $body$;
}

I'm a bit stuck on the PSI Groovy script required to generate $vTypeMightBeBoxed

PS. This is mostly caused by the total lack of editor-assistance when adding these scripts! Not what is expected from Jetbrains!

Solution

A script for $VTypeMightBeBoxed$ like this should work:

import com.intellij.psi.*
def x = VType.getType()
if (x instanceof PsiPrimitiveType) {
  return x.getBoxedTypeName();
} else {
  return VType.getText();
}

But watch out, your replacement will generate red code when there are multiple of these set methods with the same name in a class: the methods will have the same erasure.