build scripts simplified: extracted common code from *.gant files, unnecessary *Builder.groovy files removed

build/groovy/org/jetbrains/intellij/build/BuildTasks.groovy

@@ -15,8 +15,13 @@
  */
 package org.jetbrains.intellij.build
 
+import groovy.transform.CompileDynamic
 import groovy.transform.CompileStatic
+import org.codehaus.gant.GantBinding
 import org.jetbrains.intellij.build.impl.BuildTasksImpl
+import org.jetbrains.intellij.build.impl.BuildUtils
+import org.jetbrains.jps.gant.JpsGantTool
+import org.jetbrains.jps.idea.IdeaProjectLoader
 
 /**
  * @author nik
@@ -70,4 +75,26 @@ abstract class BuildTasks {
   static BuildTasks create(BuildContext context) {
     return new BuildTasksImpl(context)
   }
+
+  /**
+   * Produces distributions for all operating systems. This method must be invoked from a gant script.
+   * @param productPropertiesClassName qualified name of a Groovy class which extends {@link ProductProperties} and describes the product.
+   * The class must have single constructor with single {@code projectHome} parameter of type {@code String}.
+   * @param groovyRootRelativePaths paths to root folders containing {@code productPropertiesClassName} and required classes, relative to project home
+   * @param communityHomeRelativePath path to a directory containing sources from idea/community Git repository relative to project home
+   */
+  @CompileDynamic
+  static void buildProduct(String productPropertiesClassName, List<String> groovyRootRelativePaths, String communityHomeRelativePath, Script gantScript,
+                           ProprietaryBuildTools proprietaryBuildTools = ProprietaryBuildTools.DUMMY) {
+    String projectHome = IdeaProjectLoader.guessHome(gantScript)
+    GantBinding binding = (GantBinding)gantScript.binding
+    groovyRootRelativePaths.each {
+      BuildUtils.addToClassPath("$projectHome/$it", binding.ant)
+    }
+    binding.includeTool << JpsGantTool
+    ProductProperties productProperties = (ProductProperties) Class.forName(productPropertiesClassName).constructors[0].newInstance(projectHome)
+    def context = BuildContext.createContext(binding.ant, binding.projectBuilder, binding.project, binding.global,
+                                             "$projectHome/$communityHomeRelativePath", projectHome, productProperties, proprietaryBuildTools)
+    create(context).compileModulesAndBuildDistributions()
+  }
 }

python/build/groovy/org/jetbrains/intellij/build/pycharm/PyCharmCommunityBuilder.groovy

@@ -1,40 +0,0 @@
-/*
- * Copyright 2000-2016 JetBrains s.r.o.
- *
- * Licensed 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.
- */
-package org.jetbrains.intellij.build.pycharm
-
-import org.codehaus.gant.GantBinding
-import org.jetbrains.intellij.build.BuildContext
-import org.jetbrains.intellij.build.BuildTasks
-
-/**
- * @author nik
- */
-class PyCharmCommunityBuilder {
-  private final GantBinding binding
-  private final String home
-
-  PyCharmCommunityBuilder(String home, GantBinding binding) {
-    this.home = home
-    this.binding = binding
-  }
-
-  def build() {
-    def buildContext = BuildContext.createContext(binding.ant, binding.projectBuilder, binding.project, binding.global,
-                                                  home, home, new PyCharmCommunityProperties(home))
-    def buildTasks = BuildTasks.create(buildContext)
-    buildTasks.compileModulesAndBuildDistributions()
-  }
-}

python/build/pycharm_community_build.gant

@@ -1,11 +1,5 @@
-import org.jetbrains.intellij.build.impl.BuildUtils
-import org.jetbrains.jps.gant.JpsGantTool
-import org.jetbrains.jps.idea.IdeaProjectLoader
-
-includeTool << JpsGantTool
+import org.jetbrains.intellij.build.BuildTasks
 
 target("default": "Default") {
-  String home = new File(IdeaProjectLoader.guessHome(this)).absolutePath
-  BuildUtils.addToClassPath("$home/python/build/groovy", ant)
-  Class.forName("org.jetbrains.intellij.build.pycharm.PyCharmCommunityBuilder").constructors[0].newInstance(home, binding).build()
+  BuildTasks.buildProduct("org.jetbrains.intellij.build.pycharm.PyCharmCommunityProperties", ["python/build/groovy"], "", this)
 }