/* * Copyright (C) 2011-2019 The Project Lombok Authors. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ package lombok.javac; import java.lang.reflect.InvocationTargetException; import java.util.Collections; import java.util.List; import lombok.core.FieldAugment; import lombok.permit.Permit; import com.sun.tools.javac.main.JavaCompiler; import com.sun.tools.javac.tree.JCTree.JCCompilationUnit; import com.sun.tools.javac.util.Context; public class CommentCatcher { private final JavaCompiler compiler; public static final FieldAugment<JCCompilationUnit, List<CommentInfo>> JCCompilationUnit_comments = FieldAugment.augment(JCCompilationUnit.class, List.class, "lombok$comments"); public static final FieldAugment<JCCompilationUnit, List<Integer>> JCCompilationUnit_textBlockStarts = FieldAugment.augment(JCCompilationUnit.class, List.class, "lombok$textBlockStarts"); public static CommentCatcher create(Context context, boolean findTextBlocks) { registerCommentsCollectingScannerFactory(context, findTextBlocks); JavaCompiler compiler = new JavaCompiler(context); setInCompiler(compiler, context); compiler.keepComments = true; compiler.genEndPos = true; return new CommentCatcher(compiler); } private CommentCatcher(JavaCompiler compiler) { this.compiler = compiler; } public JavaCompiler getCompiler() { return compiler; } public void setComments(JCCompilationUnit ast, List<CommentInfo> comments) { if (comments != null) { JCCompilationUnit_comments.set(ast, comments); } else { JCCompilationUnit_comments.clear(ast); } } public List<CommentInfo> getComments(JCCompilationUnit ast) { List<CommentInfo> list = JCCompilationUnit_comments.get(ast); return list == null ? Collections.<CommentInfo>emptyList() : list; } public List<Integer> getTextBlockStarts(JCCompilationUnit ast) { List<Integer> list = JCCompilationUnit_textBlockStarts.get(ast); return list == null ? Collections.<Integer>emptyList() : list; } private static void registerCommentsCollectingScannerFactory(Context context, boolean findTextBlocks) { try { Class<?> scannerFactory; int javaCompilerVersion = Javac.getJavaCompilerVersion(); if (javaCompilerVersion <= 6) { scannerFactory = Class.forName("lombok.javac.java6.CommentCollectingScannerFactory"); } else if (javaCompilerVersion == 7) { scannerFactory = Class.forName("lombok.javac.java7.CommentCollectingScannerFactory"); } else { scannerFactory = Class.forName("lombok.javac.java8.CommentCollectingScannerFactory"); if (findTextBlocks) Permit.getField(scannerFactory, "findTextBlocks").set(null, true); } Permit.getMethod(scannerFactory, "preRegister", Context.class).invoke(null, context); } catch (InvocationTargetException e) { throw Javac.sneakyThrow(e.getCause()); } catch (Exception e) { throw Javac.sneakyThrow(e); } } private static void setInCompiler(JavaCompiler compiler, Context context) { try { Class<?> parserFactory; int javaCompilerVersion = Javac.getJavaCompilerVersion(); if (javaCompilerVersion <= 6) { parserFactory = Class.forName("lombok.javac.java6.CommentCollectingParserFactory"); } else if (javaCompilerVersion == 7) { parserFactory = Class.forName("lombok.javac.java7.CommentCollectingParserFactory"); } else if (javaCompilerVersion == 8) { parserFactory = Class.forName("lombok.javac.java8.CommentCollectingParserFactory"); } else { parserFactory = Class.forName("lombok.javac.java9.CommentCollectingParserFactory"); } Permit.getMethod(parserFactory, "setInCompiler", JavaCompiler.class, Context.class).invoke(null, compiler, context); } catch (InvocationTargetException e) { throw Javac.sneakyThrow(e.getCause()); } catch (Exception e) { throw Javac.sneakyThrow(e); } } }