jodd-proxetta/src/main/java/jodd/asm7/ClassReader.java
private void computeImplicitFrame(final Context context) {
    String methodDescriptor = context.currentMethodDescriptor;
    Object[] locals = context.currentFrameLocalTypes;
    int numLocal = 0;
    if ((context.currentMethodAccessFlags & Opcodes.ACC_STATIC) == 0) {
      if ("<init>".equals(context.currentMethodName)) {
        locals[numLocal++] = Opcodes.UNINITIALIZED_THIS;
      } else {
        locals[numLocal++] = readClass(header + 2, context.charBuffer);
      }
    }
    // Parse the method descriptor, one argument type descriptor at each iteration. Start by
    // skipping the first method descriptor character, which is always '('.
    int currentMethodDescritorOffset = 1;
    while (true) {
      int currentArgumentDescriptorStartOffset = currentMethodDescritorOffset;
      switch (methodDescriptor.charAt(currentMethodDescritorOffset++)) {
        case 'Z':
        case 'C':
        case 'B':
        case 'S':
        case 'I':
          locals[numLocal++] = Opcodes.INTEGER;
          break;
        case 'F':
          locals[numLocal++] = Opcodes.FLOAT;
          break;
        case 'J':
          locals[numLocal++] = Opcodes.LONG;
          break;
        case 'D':
          locals[numLocal++] = Opcodes.DOUBLE;
          break;
        case '[':
          while (methodDescriptor.charAt(currentMethodDescritorOffset) == '[') {
            ++currentMethodDescritorOffset;
          }
          if (methodDescriptor.charAt(currentMethodDescritorOffset) == 'L') {
            ++currentMethodDescritorOffset;
            while (methodDescriptor.charAt(currentMethodDescritorOffset) != ';') {
              ++currentMethodDescritorOffset;
            }
          }
          locals[numLocal++] =
              methodDescriptor.substring(
                  currentArgumentDescriptorStartOffset, ++currentMethodDescritorOffset);
          break;
        case 'L':
          while (methodDescriptor.charAt(currentMethodDescritorOffset) != ';') {
            ++currentMethodDescritorOffset;
          }
          locals[numLocal++] =
              methodDescriptor.substring(
                  currentArgumentDescriptorStartOffset + 1, currentMethodDescritorOffset++);
          break;
        default:
          context.currentFrameLocalCount = numLocal;
          return;
      }
    }
  }
private void computeImplicitFrame(final Context context) {
    String methodDescriptor = context.currentMethodDescriptor;
    Object[] locals = context.currentFrameLocalTypes;
    int numLocal = 0;
    if ((context.currentMethodAccessFlags & Opcodes.ACC_STATIC) == 0) {
      if ("<init>".equals(context.currentMethodName)) {
        locals[numLocal++] = Opcodes.UNINITIALIZED_THIS;
      } else {
        locals[numLocal++] = readClass(header + 2, context.charBuffer);
      }
    }
    // Parse the method descriptor, one argument type descriptor at each iteration. Start by
    // skipping the first method descriptor character, which is always '('.
    int currentMethodDescritorOffset = 1;
    while (true) {
      int currentArgumentDescriptorStartOffset = currentMethodDescritorOffset;
      switch (methodDescriptor.charAt(currentMethodDescritorOffset++)) {
        case 'Z':
        case 'C':
        case 'B':
        case 'S':
        case 'I':
          locals[numLocal++] = Opcodes.INTEGER;
          break;
        case 'F':
          locals[numLocal++] = Opcodes.FLOAT;
          break;
        case 'J':
          locals[numLocal++] = Opcodes.LONG;
          break;
        case 'D':
          locals[numLocal++] = Opcodes.DOUBLE;
          break;
        case '[':
          while (methodDescriptor.charAt(currentMethodDescritorOffset) == '[') {
            ++currentMethodDescritorOffset;
          }
          if (methodDescriptor.charAt(currentMethodDescritorOffset) == 'L') {
            ++currentMethodDescritorOffset;
            while (methodDescriptor.charAt(currentMethodDescritorOffset) != ';') {
              ++currentMethodDescritorOffset;
            }
          }
          locals[numLocal++] =
              methodDescriptor.substring(
                  currentArgumentDescriptorStartOffset, ++currentMethodDescritorOffset);
          break;
        case 'L':
          while (methodDescriptor.charAt(currentMethodDescritorOffset) != ';') {
            ++currentMethodDescritorOffset;
          }
          locals[numLocal++] =
              methodDescriptor.substring(
                  currentArgumentDescriptorStartOffset + 1, currentMethodDescritorOffset++);
          break;
        default:
          context.currentFrameLocalCount = numLocal;
          return;
      }
    }
  }
Computes the implicit frame of the method currently being parsed (as defined in the given
{@link Context}) and stores it in the given context.

@param context information about the class being parsed.