LUCENE-9915: Add generation/ checksumming task for gen_ForUtil.py (#126)

build.gradle

@@ -151,6 +151,7 @@ apply from: file('gradle/generation/kuromoji.gradle')
 apply from: file('gradle/generation/nori.gradle')
 apply from: file('gradle/generation/icu.gradle')
 apply from: file('gradle/generation/javacc.gradle')
+apply from: file('gradle/generation/forUtil.gradle')
 
 apply from: file('gradle/datasets/external-datasets.gradle')
 

gradle/generation/forUtil.gradle

@@ -0,0 +1,69 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Regenerates "ForUtil.java" code used by codecs.
+
+configure(project(":lucene:core")) {
+
+  task generateForUtilInternal() {
+    description "Regenerate gen_ForUtil.py"
+    group "generation"
+
+    def genDir = file("src/java/org/apache/lucene/codecs/lucene90")
+    def genScript = file("${genDir}/gen_ForUtil.py")
+    def genOutput = file("${genDir}/ForUtil.java")
+
+    inputs.file genScript
+    outputs.file genOutput
+
+    doLast {
+      quietExec {
+        workingDir genDir
+        executable project.externalTool("python3")
+        args = []
+      }
+    }
+  }
+
+  regenerate.dependsOn wrapWithPersistentChecksums(generateForUtilInternal, [ andThenTasks: ["spotlessJava", "spotlessJavaApply"] ])
+}
+
+configure(project(":lucene:backward-codecs")) {
+
+  task generateForUtilInternal() {
+    description "Regenerate gen_ForUtil.py"
+    group "generation"
+
+    def genDir = file("src/java/org/apache/lucene/backward_codecs/lucene84")
+    def genScript = file("${genDir}/gen_ForUtil.py")
+    def genOutput = file("${genDir}/ForUtil.java")
+
+    inputs.file genScript
+    outputs.file genOutput
+
+    doLast {
+      quietExec {
+        workingDir genDir
+        executable project.externalTool("python3")
+        args = []
+      }
+    }
+  }
+
+  regenerate.dependsOn wrapWithPersistentChecksums(generateForUtilInternal, [ andThenTasks: ["spotlessJava", "spotlessJavaApply"] ])
+}
+

gradle/generation/regenerate.gradle

@@ -64,11 +64,12 @@ def computeChecksummedEntries = { Task sourceTask ->
 
 configure([
         project(":lucene:analysis:common"),
-        project(":lucene:core"),
         project(":lucene:analysis:icu"),
-        project(":lucene:queryparser"),
         project(":lucene:analysis:kuromoji"),
-        project(":lucene:analysis:nori")
+        project(":lucene:analysis:nori"),
+        project(":lucene:backward-codecs"),
+        project(":lucene:core"),
+        project(":lucene:queryparser"),
 ]) {
     task regenerate() {
       description "Rerun any code or static data generation tasks."

lucene/backward-codecs/src/generated/checksums/generateForUtil.json

@@ -0,0 +1,4 @@
+{
+    "lucene/backward-codecs/src/java/org/apache/lucene/backward_codecs/lucene84/ForUtil.java": "59319f493441c05e84ca9077a9f3bf98b6eb8c7e",
+    "lucene/backward-codecs/src/java/org/apache/lucene/backward_codecs/lucene84/gen_ForUtil.py": "96635fbbf3270b6cb25237b8c01e068ecad0d2ce"
+}

lucene/core/src/generated/checksums/generateForUtil.json

@@ -0,0 +1,4 @@
+{
+    "lucene/core/src/java/org/apache/lucene/codecs/lucene90/ForUtil.java": "f2091e2b7284b70c740052a9b0ee389e67eb48a9",
+    "lucene/core/src/java/org/apache/lucene/codecs/lucene90/gen_ForUtil.py": "69b6fcb95fc127a5cd29a40e4454048f56570a26"
+}