/*
    * Copyright (c) 2006 JMockit developers
    * This file is subject to the terms of the MIT license (see LICENSE.txt).
    */
   package mockit.coverage.reporting;
   
   import edu.umd.cs.findbugs.annotations.NonNull;
   import edu.umd.cs.findbugs.annotations.Nullable;
   
  import java.util.List;
  import java.util.regex.Pattern;
  
  import mockit.coverage.CallPoint;
  
  public final class ListOfCallPoints {
      @NonNull
      private static final String EOL = System.lineSeparator();
      private static final Pattern LESS_THAN_CHAR = Pattern.compile("<");
  
      @NonNull
      private final StringBuilder content;
  
      public ListOfCallPoints() {
          content = new StringBuilder(100);
      }
  
      public void insertListOfCallPoints(@Nullable List<CallPoint> callPoints) {
          if (content.length() == 0) {
              content.append(EOL).append("      ");
          }
  
          content.append("  <ol style='display:none'>");
  
          if (callPoints == null) {
              content.append("</ol>").append(EOL).append("      ");
              return;
          }
  
          content.append(EOL);
  
          CallPoint currentCP = callPoints.get(0);
          appendTestMethod(currentCP.getStackTraceElement());
          appendRepetitionCountIfNeeded(currentCP);
  
          for (int i = 1, n = callPoints.size(); i < n; i++) {
              CallPoint nextCP = callPoints.get(i);
              StackTraceElement ste = nextCP.getStackTraceElement();
  
              if (nextCP.isSameTestMethod(currentCP)) {
                  content.append(", ").append(ste.getLineNumber());
              } else {
                  content.append("</li>").append(EOL);
                  appendTestMethod(ste);
              }
  
              appendRepetitionCountIfNeeded(nextCP);
              currentCP = nextCP;
          }
  
          content.append("</li>").append(EOL).append("        </ol>").append(EOL).append("      ");
      }
  
      private void appendTestMethod(@NonNull StackTraceElement current) {
          content.append("          <li>");
          content.append(current.getClassName()).append('#');
          content.append(LESS_THAN_CHAR.matcher(current.getMethodName()).replaceFirst("&lt;")).append(": ");
          content.append(current.getLineNumber());
      }
  
      private void appendRepetitionCountIfNeeded(@NonNull CallPoint callPoint) {
          int repetitionCount = callPoint.getRepetitionCount();
  
          if (repetitionCount > 0) {
              content.append('x').append(1 + repetitionCount);
          }
      }
  
      @NonNull
      public String getContents() {
          String result = content.toString();
          content.setLength(0);
          return result;
      }
  }