Description

Stefterv

opened on Sep 12, 2025

Issue body actions

Most appropriate sub-area of Processing 4?

PDE

Processing version

main

Operating system

macOS/Windows/Linux?

Bug description

Adding boolean record = true; anywhere to the sketch causes the preprocess to emit an Error even though it is valid Java.

This is what I know so far:

• record is a java keyword
• changing it to boolean record1 = true; suppresses the error
• I tried changing the antlr version back to what it was defined in the Ant build system but that didn't help either

Steps to reproduce this

1. Add boolean record = true; to a sketch

2. See the preprocessor be unhappy

snippet

boolean record = true;

void setup() {

}

void draw() {
 
}

Additional context

No response

Would you like to work on the issue?

Yes, I’d like to help with this

Activity

1. Stefterv

   assigned

   Stefterv

   and

   catilac

   on Sep 12, 2025
2. Stefterv

   added

   bugSomething isn't workingSomething isn't working

   on Sep 12, 2025
3. Stefterv commented on Sep 12, 2025

   

   Stefterv

   on Sep 12, 2025

   MemberAuthor

   More actions

   processing4/java/preprocessor/src/main/antlr/JavaLexer.g4

   Lines 109 to 110 in 275d789

   	// Records
   	RECORD: 'record';

   Here it is defined in the Lexer

   and here most of it in the Parser

   processing4/java/preprocessor/src/main/antlr/JavaParser.g4

   Lines 443 to 463 in 275d789

   	// RECORDS - Java 17
   	recordDeclaration
   	: RECORD identifier typeParameters? recordHeader (IMPLEMENTS typeList)? recordBody
   	;
   	recordHeader
   	: '(' recordComponentList? ')'
   	;
   	recordComponentList
   	: recordComponent (',' recordComponent)*
   	;
   	recordComponent
   	: typeType identifier
   	;
   	recordBody
   	: '{' (classBodyDeclaration | compactConstructorDeclaration)* '}'
   	;

   Changing the string in the top does make the error go away but that of course moves it to a separate keyword
4. catilac commented on Sep 12, 2025

   

   catilac

   on Sep 12, 2025

   Collaborator

   More actions

   @Stefterv Oh I will explore this! 🤓
5. Stefterv commented on Sep 12, 2025

   

   Stefterv

   on Sep 12, 2025

   MemberAuthor

   More actions

   Cool, the antlr stuff has been an antler (pun intended) in my side for a while so it'd be nice to share this :)

   Reacted by Moon
6. Stefterv

   removed their assignment

   on Feb 9, 2026

Issue actions