Source code of javafx.scene.control.TextInputControl.TextProperty#doSet of "javafx-controls-21-win.jar"

[Johannes Riecken]

 Hey Oliver

The Java compiler does in fact do some "smart" optimizations, which you can
easily verify by writing a void function with an early return yourself,
compiling it to a class file and decompiling the class file again :) In
this case, I assume that having a single point of exit helps the compiler
to analyze control flow.

Cheers

Johannes

On Sun, Jul 7, 2024 at 9:45 AM Oliver Kopp <kopp.dev at gmail.com> wrote:

> Dear all,
>
> I have a strange thing here in JavaFX - and I seek some guidance, what to
> do.
>
> I am searching for the source code of
> javafx.scene.control.TextInputControl.TextProperty#doSet of
> "javafx-controls-21-win.jar".
>
> Using a decompiler, the method reads as follows (shortended):
>
>
> private void doSet(String var1) {
> ...
>     if (TextInputControl.this.filterAndSet(var1)) {
> ...
>         TextInputControl.this.textUpdated();
>         TextInputControl.this.resetUndoRedoState();
>     }
> }
>
>
> I checked the source on GitHub at
> https://github.com/openjdk/jfx/blob/72701e6cb4095b8f5042f54ae6bb2c0cec446bcf/modules/javafx.controls/src/main/java/javafx/scene/control/TextInputControl.java#L1511
> :
>
>
> private void doSet(String value) {
> ...
> if (!filterAndSet(value)) return;
> ...
> textUpdated();
> ...
> resetUndoRedoState();
> }
>
>
> I assume that the Java compiler does not do some "smart" optimizations.
> Thus, the binary is different from the source somehow.
>
>
> Can someone explain me what is happening here? Why is the decompiled
> source different from the Java source?
>
>
> TYIA and cheers,
>
> Oliver
>
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