Make TooManyParameters analyzer ignore constructors that have @autofactory annotation.

PiperOrigin-RevId: 736668481

Author: java-team-github-bot

core/src/main/java/com/google/errorprone/bugpatterns/TooManyParameters.java

@@ -63,7 +63,9 @@ public class TooManyParameters extends BugChecker implements MethodTreeMatcher {
           "org.junit.Test",
           // dagger provider / producers
           "dagger.Provides",
-          "dagger.producers.Produces");
+          "dagger.producers.Produces",
+          // AutoFactory can be put on a constructor.
+          "com.google.auto.factory.AutoFactory");
 
   private static final ImmutableSet<String> CLASS_ANNOTATIONS_TO_IGNORE =
       ImmutableSet.of("com.google.auto.factory.AutoFactory");

core/src/test/java/com/google/errorprone/bugpatterns/TooManyParametersTest.java

@@ -124,7 +124,7 @@ public ConstructorTest(short a, short b, short c, short d) {}
   }
 
   @Test
-  public void ignoresAutoFactory() {
+  public void ignoresAutoFactoryOnClass() {
     compilationHelper
         .setArgs(ImmutableList.of("-XepOpt:" + TOO_MANY_PARAMETERS_FLAG_NAME + "=3"))
         .addSourceLines(
@@ -153,6 +153,36 @@ public TestWithoutAutoFactory(int a, int b, int c, int d) {}
         .doTest();
   }
 
+  @Test
+  public void ignoresAutoFactoryOnConstructor() {
+    compilationHelper
+        .setArgs(ImmutableList.of("-XepOpt:" + TOO_MANY_PARAMETERS_FLAG_NAME + "=3"))
+        .addSourceLines(
+            "AutoFactory.java",
+            """
+            package com.google.auto.factory;
+
+            public @interface AutoFactory {}
+            """)
+        .addSourceLines(
+            "Test.java",
+            """
+            public class Test {
+              @com.google.auto.factory.AutoFactory
+              public Test(int a, int b, int c, int d) {}
+            }
+            """)
+        .addSourceLines(
+            "TestWithoutAutoFactory.java",
+            """
+            public class TestWithoutAutoFactory {
+              // BUG: Diagnostic contains: 4 parameters
+              public TestWithoutAutoFactory(int a, int b, int c, int d) {}
+            }
+            """)
+        .doTest();
+  }
+
   @Test
   public void method() {
     compilationHelper