| /* |
| * 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. |
| */ |
| |
| package org.apache.royale.compiler.tools.annotate; |
| |
| import java.io.*; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Set; |
| |
| public class OrderSwitches |
| { |
| public static void processFile(File file) throws AnnotateClass.AnnotateClassDeleteException, AnnotateClass.AnnotateClassRenameException { |
| if(!file.exists()) { |
| System.out.println("Missing file: " + file.getPath()); |
| return; |
| } |
| try |
| { |
| // Prepare to read the file. |
| FileInputStream fileInputStream = new FileInputStream(file); |
| InputStreamReader inputStreamReader = new InputStreamReader(fileInputStream); |
| BufferedReader bufferedReader = new BufferedReader(inputStreamReader); |
| |
| File tmpOutputFile = new File(file.getParentFile(), file.getName() + ".tmp"); |
| FileOutputStream fileOutputStream = new FileOutputStream(tmpOutputFile); |
| PrintStream outputStream = new PrintStream(fileOutputStream); |
| try |
| { |
| // Read it line-by-line. |
| String line; |
| ArrayList<String> lines = new ArrayList<String>(); |
| boolean inSwitch = false; |
| while ((line = bufferedReader.readLine()) != null) |
| { |
| if (line.contains("The following code was generated by JFlex ")) |
| { |
| int c = line.indexOf(" on "); |
| if (c != -1) |
| line = line.substring(0, c) + " */"; |
| } |
| if (line.contains("* on ") && line.contains("from the specification file")) |
| line = " * from the specification file"; |
| if (line.contains("<tt>") && line.contains("compiler/src/main/jflex")) |
| { |
| int t = line.indexOf("<tt>"); |
| int rc = line.indexOf("compiler/src/main/jflex"); |
| line = line.substring(0, t + 4) + line.substring(rc); |
| } |
| // If the line starts with "switch", and the cases are numbers, make sure they are in order. |
| if (line.contains(" switch (zzAction")) { |
| inSwitch = true; |
| System.out.println("Ordering Switch in file: " + file.getPath()); |
| } |
| if (inSwitch) |
| { |
| lines.add(line); |
| if (line.startsWith(" }")) { |
| orderSwitch(lines); |
| for (String orderedLine : lines) |
| { |
| outputStream.println(orderedLine); |
| } |
| inSwitch = false; |
| } |
| } |
| else |
| outputStream.println(line); |
| } |
| } |
| finally |
| { |
| try { |
| bufferedReader.close(); |
| } catch(Exception e) { |
| // Ignore. |
| } |
| try { |
| outputStream.close(); |
| } catch(Exception e) { |
| // Ignore. |
| } |
| try { |
| fileOutputStream.close(); |
| } catch(Exception e) { |
| // Ignore. |
| } |
| try { |
| inputStreamReader.close(); |
| } catch(Exception e) { |
| // Ignore. |
| } |
| try { |
| fileInputStream.close(); |
| } catch(Exception e) { |
| // Ignore. |
| } |
| } |
| |
| // Remove the original file. |
| if(!file.delete()) { |
| // wait a bit then retry on Windows |
| if (file.exists()) |
| { |
| for (int i = 0; i < 6; i++) |
| { |
| Thread.sleep(500); |
| System.gc(); |
| if (file.delete()) |
| break; |
| } |
| if (file.exists()) |
| throw new AnnotateClass.AnnotateClassDeleteException("Error deleting original file at: " + file.getPath()); |
| } |
| } |
| |
| // Rename the temp file to the name of the original file. |
| if(!tmpOutputFile.renameTo(file)) { |
| throw new AnnotateClass.AnnotateClassRenameException("Error renaming the temp file from: " + tmpOutputFile.getPath() + |
| " to: " + file.getPath()); |
| } |
| } |
| catch (Exception e) |
| { |
| e.printStackTrace(); |
| } |
| } |
| |
| private static void orderSwitch(ArrayList<String> lines) { |
| HashMap<String,List<String>> switchMap = new HashMap<String,List<String>>(); |
| ArrayList<String> defaultCase = new ArrayList<String>(); |
| ArrayList<String> breaks = new ArrayList<String>(); |
| String line0 = lines.get(0); // first line should be switch statement |
| boolean inDefault = false; |
| int n = lines.size(); |
| for (int i = 1; i < n; i++) |
| { |
| String line = lines.get(i); |
| int c = line.indexOf(" case "); |
| if (!inDefault && (c != -1)) |
| { |
| String cayse = line.substring(c); |
| if (line.contains("break;")) |
| { |
| // some cases just contain a break statement. |
| // the are used to make sure the prior case |
| // ends with a break without having to check |
| // if the break statement would be reachable |
| // due to return statements in the case. |
| breaks.add(line); |
| continue; |
| } |
| else |
| { |
| ArrayList<String> caseLines = new ArrayList<String>(); |
| for (int j = i + 1; j < n; j++) |
| { |
| line = lines.get(j); |
| if (line.contains(" case ")) |
| { |
| switchMap.put(cayse, caseLines); |
| i = j - 1; |
| break; |
| } |
| else if (line.contains("default:")) |
| { |
| switchMap.put(cayse, caseLines); |
| inDefault = true; |
| i = j; |
| // assumes no break at end of default case |
| defaultCase.add(line); |
| break; |
| } |
| caseLines.add(line); |
| } |
| } |
| } |
| else if (line.contains("default:")) |
| { |
| inDefault = true; |
| // assumes no break at end of default case |
| defaultCase.add(line); |
| } |
| else if (inDefault) |
| defaultCase.add(line); |
| } |
| Set<String> keys = switchMap.keySet(); |
| ArrayList<String> keyList = new ArrayList<String>(); |
| keyList.addAll(keys); |
| Collections.sort(keyList); |
| lines.clear(); |
| lines.add(line0); |
| int breakIndex = 0; |
| for (String key : keyList) |
| { |
| lines.add(" " + key); |
| List<String> caseLines = switchMap.get(key); |
| lines.addAll(caseLines); |
| lines.add(breaks.get(breakIndex++)); |
| } |
| boolean inSwitch = false; |
| boolean sawDefault = false; |
| ArrayList<String> switchLines = new ArrayList<String>(); |
| for (String defaultLine : defaultCase) |
| { |
| // If the line starts with "switch", and the cases are numbers, make sure they are in order. |
| if (defaultLine.contains("switch (zzLexicalState)")) { |
| inSwitch = true; |
| System.out.println("Ordering Switch in default: "); |
| } |
| if (inSwitch) |
| { |
| switchLines.add(defaultLine); |
| if (defaultLine.contains("default:")) |
| sawDefault = true; |
| if (sawDefault && defaultLine.startsWith(" }")) { |
| orderSwitch(switchLines); |
| for (String orderedLine : switchLines) |
| { |
| lines.add(orderedLine); |
| } |
| inSwitch = false; |
| } |
| } |
| else |
| lines.add(defaultLine); |
| |
| } |
| |
| } |
| |
| public static void main(String[] args) |
| { |
| File f = new File(args[0]); |
| try { |
| processFile(f); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| } |
| |
| } |
| } |