Inline DelayedThreadSafeAnalysis into the checker.

It's only used here. I kept staring at it trying to dedupe with ThreadSafeAnalysis, but it's actually different.

PiperOrigin-RevId: 523952698

core/src/main/java/com/google/errorprone/bugpatterns/threadsafety/ImmutableAnalysis.java

@@ -22,10 +22,8 @@
 import com.google.common.collect.ImmutableSet;
 import com.google.errorprone.VisitorState;
 import com.google.errorprone.annotations.CheckReturnValue;
-import com.google.errorprone.annotations.Immutable;
 import com.google.errorprone.annotations.ImmutableTypeParameter;
 import com.google.errorprone.annotations.concurrent.LazyInit;
-import com.google.errorprone.bugpatterns.BugChecker;
 import com.google.errorprone.bugpatterns.threadsafety.ThreadSafety.Purpose;
 import com.google.errorprone.bugpatterns.threadsafety.ThreadSafety.Violation;
 import com.google.errorprone.fixes.SuggestedFix;
@@ -45,26 +43,27 @@
 import java.util.Map;
 import java.util.Optional;
 import java.util.Set;
+import java.util.function.BiPredicate;
 import java.util.function.Predicate;
 import javax.lang.model.element.ElementKind;
 import javax.lang.model.element.Modifier;
 import javax.lang.model.type.TypeKind;
 import org.checkerframework.checker.nullness.qual.Nullable;
 
 /** Analyzes types for deep immutability. */
-public class ImmutableAnalysis {
+public final class ImmutableAnalysis {
 
-  private final BugChecker bugChecker;
+  private final BiPredicate<Symbol, VisitorState> suppressionChecker;
   private final VisitorState state;
   private final WellKnownMutability wellKnownMutability;
   private final ThreadSafety threadSafety;
 
   ImmutableAnalysis(
-      BugChecker bugChecker,
+      BiPredicate<Symbol, VisitorState> suppressionChecker,
       VisitorState state,
       WellKnownMutability wellKnownMutability,
       ImmutableSet<String> immutableAnnotations) {
-    this.bugChecker = bugChecker;
+    this.suppressionChecker = suppressionChecker;
     this.state = state;
     this.wellKnownMutability = wellKnownMutability;
     this.threadSafety =
@@ -76,11 +75,6 @@ public class ImmutableAnalysis {
             .build(state);
   }
 
-  public ImmutableAnalysis(
-      BugChecker bugChecker, VisitorState state, WellKnownMutability wellKnownMutability) {
-    this(bugChecker, state, wellKnownMutability, ImmutableSet.of(Immutable.class.getName()));
-  }
-
   Violation isThreadSafeType(
       boolean allowContainerTypeParameters, Set<String> containerTypeParameters, Type type) {
     return threadSafety.isThreadSafeType(
@@ -140,11 +134,11 @@ public Violation checkForImmutability(
       if (interfaceAnnotation == null) {
         continue;
       }
-      info =
+      Violation superInfo =
           threadSafety.checkSuperInstantiation(
               immutableTyParams, interfaceAnnotation, interfaceType);
-      if (info.isPresent()) {
-        return info.plus(
+      if (superInfo.isPresent()) {
+        return superInfo.plus(
             String.format(
                 "'%s' extends '%s'",
                 threadSafety.getPrettyName(type.tsym),
@@ -154,22 +148,23 @@ public Violation checkForImmutability(
 
     if (!type.asElement().isEnum()) {
       // don't check enum super types here to avoid double-reporting errors
-      info = checkSuper(immutableTyParams, type);
-      if (info.isPresent()) {
-        return info;
+      Violation superInfo = checkSuper(immutableTyParams, type, reporter);
+      if (superInfo.isPresent()) {
+        return superInfo;
       }
     }
     Type mutableEnclosing = threadSafety.mutableEnclosingInstance(tree, type);
     if (mutableEnclosing != null) {
-      return info.plus(
+      return Violation.of(
           String.format(
               "'%s' has mutable enclosing instance '%s'",
               threadSafety.getPrettyName(type.tsym), mutableEnclosing));
     }
     return Violation.absent();
   }
 
-  private Violation checkSuper(ImmutableSet<String> immutableTyParams, ClassType type) {
+  private Violation checkSuper(
+      ImmutableSet<String> immutableTyParams, ClassType type, ViolationReporter reporter) {
     ClassType superType = (ClassType) state.getTypes().supertype(type);
     if (superType.getKind() == TypeKind.NONE
         || state.getTypes().isSameType(state.getSymtab().objectType, superType)) {
@@ -198,18 +193,7 @@ private Violation checkSuper(ImmutableSet<String> immutableTyParams, ClassType t
 
     // Recursive case: check if the supertype is 'effectively' immutable.
     Violation info =
-        checkForImmutability(
-            Optional.<ClassTree>empty(),
-            immutableTyParams,
-            superType,
-            new ViolationReporter() {
-              @Override
-              public Description.Builder describe(Tree tree, Violation info) {
-                return bugChecker
-                    .buildDescription(tree)
-                    .setMessage(info.plus(info.message()).message());
-              }
-            });
+        checkForImmutability(Optional.<ClassTree>empty(), immutableTyParams, superType, reporter);
     if (!info.isPresent()) {
       return Violation.absent();
     }
@@ -267,7 +251,7 @@ Violation isFieldImmutable(
       ClassType classType,
       VarSymbol var,
       ViolationReporter reporter) {
-    if (bugChecker.isSuppressed(var, state)) {
+    if (suppressionChecker.test(var, state)) {
       return Violation.absent();
     }
     if (!var.getModifiers().contains(Modifier.FINAL)

core/src/main/java/com/google/errorprone/bugpatterns/threadsafety/ImmutableAnnotationChecker.java

@@ -90,7 +90,10 @@ public Description matchClass(ClassTree tree, VisitorState state) {
 
     Violation info =
         new ImmutableAnalysis(
-                this, state, wellKnownMutability, ImmutableSet.of(Immutable.class.getName()))
+                this::isSuppressed,
+                state,
+                wellKnownMutability,
+                ImmutableSet.of(Immutable.class.getName()))
             .checkForImmutability(
                 Optional.of(tree), ImmutableSet.of(), getType(tree), this::describeClass);
 

core/src/main/java/com/google/errorprone/bugpatterns/threadsafety/ImmutableChecker.java

@@ -214,7 +214,8 @@ public Description matchMethod(MethodTree tree, VisitorState state) {
   }
 
   private ImmutableAnalysis createImmutableAnalysis(VisitorState state) {
-    return new ImmutableAnalysis(this, state, wellKnownMutability, immutableAnnotations);
+    return new ImmutableAnalysis(
+        this::isSuppressed, state, wellKnownMutability, immutableAnnotations);
   }
 
   private void checkInvocation(

core/src/main/java/com/google/errorprone/bugpatterns/threadsafety/ImmutableEnumChecker.java

@@ -84,7 +84,10 @@ public Description matchClass(ClassTree tree, VisitorState state) {
 
     Violation info =
         new ImmutableAnalysis(
-                this, state, wellKnownMutability, ImmutableSet.of(Immutable.class.getName()))
+                this::isSuppressed,
+                state,
+                wellKnownMutability,
+                ImmutableSet.of(Immutable.class.getName()))
             .checkForImmutability(
                 Optional.of(tree), ImmutableSet.of(), getType(tree), this::describe);