Fixes for nullaway update

Bug: 311064136
Test: m RUN_ERROR_PRONE=true javac-check
Change-Id: I33bfd234d9567051033d1b2ac3e65be96b84dc80

1 files changed, 29 insertions, 1 deletions

diff --git a/Android.bp b/Android.bp
index 94eb8fc..6e5ef80 100644
--- a/Android.bp
+++ b/Android.bp
@@ -49,7 +49,10 @@ java_plugin {
 java_library_host {
     name: "nullaway_lib",
 
-    srcs: ["nullaway/src/**/*.java"],
+    srcs: [
+        "nullaway/src/**/*.java",
+        ":nullaway_fake_contract_annotation",
+    ],
 
     exclude_srcs: ["nullaway/src/test/**/*.java"],
 
@@ -57,6 +60,7 @@ java_library_host {
         "guava",
         "//external/error_prone:error_prone_checkerframework_dataflow_nullaway",
         "//external/error_prone:error_prone_core",
+        "nullaway_annotations",
     ],
 
     libs: [
@@ -80,3 +84,27 @@ java_library_host {
         "--add-exports jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED",
     ],
 }
+
+// Nullaway depends on the Contract annotation, but we don't have it imported into android.
+// Create a fake stub annotation to use instead.
+genrule {
+    name: "nullaway_fake_contract_annotation",
+    out: ["org/jetbrains/annotations/Contract.java"],
+    cmd: "echo 'package org.jetbrains.annotations;' >> $(out) && " +
+        "echo 'import java.lang.annotation.*;' >> $(out) && " +
+        "echo '@Retention(RetentionPolicy.CLASS)' >> $(out) && " +
+        "echo '@Target({ElementType.METHOD, ElementType.CONSTRUCTOR})' >> $(out) && " +
+        "echo 'public @interface Contract {' >> $(out) && " +
+        "echo '  String value() default \"\";' >> $(out) && " +
+        "echo '}' >> $(out)",
+    visibility: ["//visibility:private"],
+}
+
+java_library {
+    name: "nullaway_annotations",
+    host_supported: true,
+
+    srcs: [
+        "annotations/src/**/*.java"
+    ],
+}