/*
    * MIT License
    * Copyright (c) 2006-2025 JMockit developers
    * See LICENSE file for full license text.
    */
   package mockit.asm.types;
   
   import edu.umd.cs.findbugs.annotations.NonNull;
   
  import org.checkerframework.checker.index.qual.NonNegative;
  
  public final class ArrayType extends ReferenceType {
      @NonNull
      public static ArrayType create(@NonNull String typeDesc) {
          return new ArrayType(typeDesc.toCharArray());
      }
  
      /**
       * Initializes an array type.
       *
       * @param typeDesc
       *            a buffer containing the descriptor of the array type
       * @param off
       *            the offset of the descriptor in the buffer
       */
      @NonNull
      static ArrayType create(@NonNull char[] typeDesc, @NonNegative int off) {
          int len = findNumberOfDimensions(typeDesc, off);
  
          if (typeDesc[off + len] == 'L') {
              len = findTypeNameLength(typeDesc, off, len);
          }
  
          return new ArrayType(typeDesc, off, len + 1);
      }
  
      @NonNegative
      private static int findNumberOfDimensions(@NonNull char[] typeDesc, @NonNegative int off) {
          int dimensions = 1;
  
          while (typeDesc[off + dimensions] == '[') {
              dimensions++;
          }
  
          return dimensions;
      }
  
      private ArrayType(@NonNull char[] typeDesc, @NonNegative int off, @NonNegative int len) {
          super(typeDesc, off, len);
      }
  
      ArrayType(@NonNull char[] typeDesc) {
          super(typeDesc);
      }
  
      /**
       * Returns the number of dimensions of this array type.
       */
      @NonNegative
      public int getDimensions() {
          return findNumberOfDimensions(typeDescChars, off);
      }
  
      /**
       * Returns the type of the elements of this array type.
       */
      @NonNull
      public JavaType getElementType() {
          int dimensions = getDimensions();
          return getType(typeDescChars, off + dimensions);
      }
  
      @NonNull
      @Override
      public String getClassName() {
          String className = getElementType().getClassName();
          StringBuilder sb = new StringBuilder(className);
          int dimensions = getDimensions();
  
          for (int i = dimensions; i > 0; i--) {
              sb.append("[]");
          }
  
          return sb.toString();
      }
  }