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Cleanup: using fragments as suggested.

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This commit is contained in:
Jan Lahoda 2026-01-27 16:15:21 +01:00
parent 8f1ea6b9cd
commit 3a3fd48628
5 changed files with 51 additions and 45 deletions
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26
src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Flow.java
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@ -50,10 +50,15 @@ import static com.sun.tools.javac.code.Flags.BLOCK;
import static com.sun.tools.javac.code.Kinds.Kind.*;
import static com.sun.tools.javac.code.TypeTag.BOOLEAN;
import static com.sun.tools.javac.code.TypeTag.VOID;
import com.sun.tools.javac.comp.ExhaustivenessComputer.BindingPattern;
import com.sun.tools.javac.comp.ExhaustivenessComputer.EnumConstantPattern;
import com.sun.tools.javac.comp.ExhaustivenessComputer.ExhaustivenessResult;
import com.sun.tools.javac.comp.ExhaustivenessComputer.PatternDescription;
import com.sun.tools.javac.comp.ExhaustivenessComputer.RecordPattern;
import com.sun.tools.javac.resources.CompilerProperties.Fragments;
import static com.sun.tools.javac.tree.JCTree.Tag.*;
import com.sun.tools.javac.util.JCDiagnostic.Fragment;
import java.util.Arrays;
/** This pass implements dataflow analysis for Java programs though
* different AST visitor steps. Liveness analysis (see AliveAnalyzer) checks that
@ -768,14 +773,31 @@ public class Flow {
List<JCDiagnostic> details =
exhaustivenessResult.notExhaustiveDetails()
.stream()
.sorted((pd1, pd2) -> pd1.toString().compareTo(pd2.toString()))
.map(detail -> diags.fragment(Fragments.NotExhaustiveDetail(detail)))
.map(this::patternToDiagnostic)
.sorted((d1, d2) -> d1.toString()
.compareTo(d2.toString()))
.collect(List.collector());
JCDiagnostic main = diags.error(null, log.currentSource(), pos, errorKey);
JCDiagnostic d = new JCDiagnostic.MultilineDiagnostic(main, details);
log.report(d);
}
private JCDiagnostic patternToDiagnostic(PatternDescription desc) {
Type patternType = types.erasure(desc.type());
return diags.fragment(switch (desc) {
case BindingPattern _ ->
Fragments.BindingPattern(patternType);
case RecordPattern rp ->
Fragments.RecordPattern(patternType,
Arrays.stream(rp.nested())
.map(this::patternToDiagnostic)
.toList());
case EnumConstantPattern ep ->
Fragments.EnumConstantPattern(patternType,
ep.enumConstant());
});
}
public void visitTry(JCTry tree) {
ListBuffer<PendingExit> prevPendingExits = pendingExits;
pendingExits = new ListBuffer<>();

14
src/jdk.compiler/share/classes/com/sun/tools/javac/resources/compiler.properties
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@ -1485,9 +1485,17 @@ compiler.err.not.exhaustive.statement.details=\
the switch statement does not cover all possible input values\n\
missing patterns:
# 0: pattern
compiler.misc.not.exhaustive.detail=\
{0}
# 0: type
compiler.misc.binding.pattern=\
{0} _
# 0: type, 1: list of diagnostic
compiler.misc.record.pattern=\
{0}({1})
# 0: type, 1: name
compiler.misc.enum.constant.pattern=\
{0}.{1}
compiler.err.initializer.must.be.able.to.complete.normally=\
initializer must be able to complete normally

12
src/jdk.compiler/share/classes/com/sun/tools/javac/util/AbstractDiagnosticFormatter.java
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@ -234,18 +234,6 @@ public abstract class AbstractDiagnosticFormatter implements DiagnosticFormatter
return messages.getLocalizedString(l, "compiler.misc.tree.tag." +
StringUtils.toLowerCase(tag.name()));
}
else if (arg instanceof BindingPattern bp) {
return formatArgument(d, bp.type(), l) + " _";
}
else if (arg instanceof RecordPattern rp) {
return formatArgument(d, rp.type(), l) +
Arrays.stream(rp.nested())
.map(pd -> formatArgument(d, pd, l))
.collect(Collectors.joining(", ", "(", ")"));
}
else if (arg instanceof EnumConstantPattern ep) {
return formatArgument(d, ep.type(), l) + "." + ep.enumConstant();
}
else {
return String.valueOf(arg);
}

12
src/jdk.compiler/share/classes/com/sun/tools/javac/util/RichDiagnosticFormatter.java
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@ -212,7 +212,6 @@ public class RichDiagnosticFormatter extends
* @param arg the argument to be translated
*/
protected void preprocessArgument(Object arg) {
//TODO: preprocess for patterns
if (arg instanceof Type type) {
preprocessType(type);
}
@ -230,17 +229,6 @@ public class RichDiagnosticFormatter extends
preprocessArgument(o);
}
}
else if (arg instanceof BindingPattern bp) {
preprocessArgument(bp.type());
}
else if (arg instanceof RecordPattern rp) {
preprocessArgument(rp.type());
Arrays.stream(rp.nested())
.forEach(this::preprocessArgument);
}
else if (arg instanceof EnumConstantPattern ep) {
preprocessArgument(ep.type());
}
}
/**

2
test/langtools/tools/javac/patterns/ExhaustivenessConvenientErrors.java
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@ -576,7 +576,7 @@ public class ExhaustivenessConvenientErrors extends TestRunner {
if (d instanceof JCDiagnostic.MultilineDiagnostic diag) {
diag.getSubdiagnostics()
.stream()
.map(fragment -> fragment.getArgs()[0].toString())
.map(fragment -> fragment.toString())
.forEach(missingPatterns::add);
}
}