content: /*
   *  This file is part of AndroidIDE.
   *
   *  AndroidIDE is free software: you can redistribute it and/or modify
   *  it under the terms of the GNU General Public License as published by
   *  the Free Software Foundation, either version 3 of the License, or
   *  (at your option) any later version.
   *
   *  AndroidIDE is distributed in the hope that it will be useful,
   *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *  GNU General Public License for more details.
   *
   *  You should have received a copy of the GNU General Public License
   *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
   */
  package com.itsaky.androidide.lsp.java.rewrite;
  
  import androidx.annotation.NonNull;
  import com.itsaky.androidide.lsp.java.compiler.CompilerProvider;
  import com.itsaky.androidide.lsp.java.utils.EditHelper;
  import com.itsaky.androidide.lsp.java.utils.FindHelper;
  import com.itsaky.androidide.lsp.models.TextEdit;
  import java.nio.file.Path;
  import java.util.Collections;
  import java.util.Map;
  import openjdk.source.util.Trees;
  
  public class RemoveMethod extends Rewrite {
  
    final String className, methodName;
    final String[] erasedParameterTypes;
  
    public RemoveMethod(String className, String methodName, String[] erasedParameterTypes) {
      this.className = className;
      this.methodName = methodName;
      this.erasedParameterTypes = erasedParameterTypes;
    }
  
    @NonNull
    @Override
    public Map<Path, TextEdit[]> rewrite(CompilerProvider compiler) {
      Path file = compiler.findTypeDeclaration(className);
      if (file == CompilerProvider.NOT_FOUND) {
        return CANCELLED;
      }
  
      return compiler
          .compile(file)
          .get(
              task -> {
                final var methodElement =
                    FindHelper.findMethod(task, className, methodName, erasedParameterTypes);
                if (methodElement == null) {
                  return CANCELLED;
                }
  
                final var methodTree = Trees.instance(task.task).getTree(methodElement);
                if (methodTree == null) {
                  return CANCELLED;
                }
  
                TextEdit[] edits = {EditHelper.removeTree(task.task, task.root(), methodTree)};
                return Collections.singletonMap(file, edits);
              });
    }
  }
  