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fix: support JDK 25 API change #1305

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fix: support JDK 25 API change #1305

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2a1ac82
fix: support JDK 25 API change
May 21, 2025
87605c0
Merge branch 'develop' into jdk25
gnodet May 28, 2025
955d289
Cache the method handle in a constant, no need for two fallbacks
gnodet Jul 2, 2025
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31 changes: 30 additions & 1 deletion palantir-java-format/src/main/java/com/palantir/javaformat/java/JavaInput.java
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Original file line number Diff line number Diff line change
Expand Up @@ -39,10 +39,12 @@
import com.sun.tools.javac.parser.Tokens.TokenKind;
import com.sun.tools.javac.tree.JCTree.JCCompilationUnit;
import com.sun.tools.javac.util.Context;
import com.sun.tools.javac.util.JCDiagnostic;
import com.sun.tools.javac.util.Log;
import com.sun.tools.javac.util.Log.DeferredDiagnosticHandler;
import com.sun.tools.javac.util.Options;
import java.io.IOException;
import java.lang.reflect.Method;
import java.net.URI;
import java.util.ArrayList;
import java.util.Collection;
Expand Down Expand Up @@ -366,7 +368,7 @@ public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOExcept
});
DeferredDiagnosticHandler diagnostics = new DeferredDiagnosticHandler(log);
ImmutableList<RawTok> rawToks = JavacTokens.getTokens(text, context, stopTokens);
if (diagnostics.getDiagnostics().stream().anyMatch(d -> d.getKind() == Diagnostic.Kind.ERROR)) {
if (getDiagnostics(diagnostics).stream().anyMatch(d -> d.getKind() == Diagnostic.Kind.ERROR)) {
return ImmutableList.of(new Tok(0, "", "", 0, 0, true, null)); // EOF
}
int kN = 0;
Expand Down Expand Up @@ -463,6 +465,33 @@ public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOExcept
return ImmutableList.copyOf(toks);
}

/**
* Gets diagnostics from a DeferredDiagnosticHandler using reflection.
* This method handles the API change in JDK 25 where getDiagnostics()
* changed from returning Queue to List.
*
* @param handler the diagnostic handler
* @return a collection of diagnostics
*/
@SuppressWarnings("unchecked")
private static Collection<JCDiagnostic> getDiagnostics(DeferredDiagnosticHandler handler) {
try {
return (Collection<JCDiagnostic>) GET_DIAGNOSTICS.invoke(handler);
} catch (ReflectiveOperationException e) {
throw new LinkageError(e.getMessage(), e);
}
}

private static final Method GET_DIAGNOSTICS;

static {
try {
GET_DIAGNOSTICS = DeferredDiagnosticHandler.class.getMethod("getDiagnostics");
} catch (NoSuchMethodException e) {
throw new LinkageError(e.getMessage(), e);
}
}

@SuppressWarnings("for-rollout:NullAway")
private static int updateColumn(int columnI, String originalTokText) {
Integer last = Iterators.getLast(Newlines.lineOffsetIterator(originalTokText));
Expand Down