[Java17] Deal with Java 12 Switch statements in J2X

[cdietrich]

J2X exlodes with jdt java 12 switch statements
JavaAstFlattener
e.g. org.eclipse.xtend.core.tests.java8.javaconverter.Java8ConverterTest.testJava7()

package int thousand=1_000
package int million=1_000_000
package double d1=1000_000.0d
// long a1 = 0b1000_1010_0010_1101_1010_0001_0100_0101L;
package Map<String, List<String>> trades=new TreeMap()
def void processTrade(String t) {
	
	switch (t) {
		case MISSING,
		case MISSING,
		case MISSING,
		default :{
			
		}
	}
	try (var FileInputStream in=new FileInputStream("java7.txt")){
		System.out.println(in.read()) 
		throw new IllegalAccessException()
	} catch (IOException | IllegalAccessException e) {
		e.printStackTrace() 
	}
	
}

[cdietrich]

check also other depre. in JavaASTFlattener

[cdietrich]

maybe we also need a general mechanism to deal with stuff we dont support gracefully

[cdietrich]

Java 17 Supported moved to 2.28

[cdietrich]

move to 2.30, likely wont fix

[szarnekow]

I'd rather delete the entire Java2Xtend converter.

[miklossy]

I also agree with @szarnekow

[cdietrich]

wont fix