jodd-proxetta/src/main/java/jodd/asm7/MethodWriter.java
int computeMethodInfoSize() {
    // If this method_info must be copied from an existing one, the size computation is trivial.
    if (sourceOffset != 0) {
      // sourceLength excludes the first 6 bytes for access_flags, name_index and descriptor_index.
      return 6 + sourceLength;
    }
    // 2 bytes each for access_flags, name_index, descriptor_index and attributes_count.
    int size = 8;
    // For ease of reference, we use here the same attribute order as in Section 4.7 of the JVMS.
    if (code.length > 0) {
      if (code.length > 65535) {
        throw new MethodTooLargeException(
            symbolTable.getClassName(), name, descriptor, code.length);
      }
      symbolTable.addConstantUtf8(Constants.CODE);
      // The Code attribute has 6 header bytes, plus 2, 2, 4 and 2 bytes respectively for max_stack,
      // max_locals, code_length and attributes_count, plus the bytecode and the exception table.
      size += 16 + code.length + Handler.getExceptionTableSize(firstHandler);
      if (stackMapTableEntries != null) {
        boolean useStackMapTable = symbolTable.getMajorVersion() >= Opcodes.V1_6;
        symbolTable.addConstantUtf8(useStackMapTable ? Constants.STACK_MAP_TABLE : "StackMap");
        // 6 header bytes and 2 bytes for number_of_entries.
        size += 8 + stackMapTableEntries.length;
      }
      if (lineNumberTable != null) {
        symbolTable.addConstantUtf8(Constants.LINE_NUMBER_TABLE);
        // 6 header bytes and 2 bytes for line_number_table_length.
        size += 8 + lineNumberTable.length;
      }
      if (localVariableTable != null) {
        symbolTable.addConstantUtf8(Constants.LOCAL_VARIABLE_TABLE);
        // 6 header bytes and 2 bytes for local_variable_table_length.
        size += 8 + localVariableTable.length;
      }
      if (localVariableTypeTable != null) {
        symbolTable.addConstantUtf8(Constants.LOCAL_VARIABLE_TYPE_TABLE);
        // 6 header bytes and 2 bytes for local_variable_type_table_length.
        size += 8 + localVariableTypeTable.length;
      }
      if (lastCodeRuntimeVisibleTypeAnnotation != null) {
        size +=
            lastCodeRuntimeVisibleTypeAnnotation.computeAnnotationsSize(
                Constants.RUNTIME_VISIBLE_TYPE_ANNOTATIONS);
      }
      if (lastCodeRuntimeInvisibleTypeAnnotation != null) {
        size +=
            lastCodeRuntimeInvisibleTypeAnnotation.computeAnnotationsSize(
                Constants.RUNTIME_INVISIBLE_TYPE_ANNOTATIONS);
      }
      if (firstCodeAttribute != null) {
        size +=
            firstCodeAttribute.computeAttributesSize(
                symbolTable, code.data, code.length, maxStack, maxLocals);
      }
    }
    if (numberOfExceptions > 0) {
      symbolTable.addConstantUtf8(Constants.EXCEPTIONS);
      size += 8 + 2 * numberOfExceptions;
    }
    boolean useSyntheticAttribute = symbolTable.getMajorVersion() < Opcodes.V1_5;
    if ((accessFlags & Opcodes.ACC_SYNTHETIC) != 0 && useSyntheticAttribute) {
      symbolTable.addConstantUtf8(Constants.SYNTHETIC);
      size += 6;
    }
    if (signatureIndex != 0) {
      symbolTable.addConstantUtf8(Constants.SIGNATURE);
      size += 8;
    }
    if ((accessFlags & Opcodes.ACC_DEPRECATED) != 0) {
      symbolTable.addConstantUtf8(Constants.DEPRECATED);
      size += 6;
    }
    if (lastRuntimeVisibleAnnotation != null) {
      size +=
          lastRuntimeVisibleAnnotation.computeAnnotationsSize(
              Constants.RUNTIME_VISIBLE_ANNOTATIONS);
    }
    if (lastRuntimeInvisibleAnnotation != null) {
      size +=
          lastRuntimeInvisibleAnnotation.computeAnnotationsSize(
              Constants.RUNTIME_INVISIBLE_ANNOTATIONS);
    }
    if (lastRuntimeVisibleParameterAnnotations != null) {
      size +=
          AnnotationWriter.computeParameterAnnotationsSize(
              Constants.RUNTIME_VISIBLE_PARAMETER_ANNOTATIONS,
              lastRuntimeVisibleParameterAnnotations,
              visibleAnnotableParameterCount == 0
                  ? lastRuntimeVisibleParameterAnnotations.length
                  : visibleAnnotableParameterCount);
    }
    if (lastRuntimeInvisibleParameterAnnotations != null) {
      size +=
          AnnotationWriter.computeParameterAnnotationsSize(
              Constants.RUNTIME_INVISIBLE_PARAMETER_ANNOTATIONS,
              lastRuntimeInvisibleParameterAnnotations,
              invisibleAnnotableParameterCount == 0
                  ? lastRuntimeInvisibleParameterAnnotations.length
                  : invisibleAnnotableParameterCount);
    }
    if (lastRuntimeVisibleTypeAnnotation != null) {
      size +=
          lastRuntimeVisibleTypeAnnotation.computeAnnotationsSize(
              Constants.RUNTIME_VISIBLE_TYPE_ANNOTATIONS);
    }
    if (lastRuntimeInvisibleTypeAnnotation != null) {
      size +=
          lastRuntimeInvisibleTypeAnnotation.computeAnnotationsSize(
              Constants.RUNTIME_INVISIBLE_TYPE_ANNOTATIONS);
    }
    if (defaultValue != null) {
      symbolTable.addConstantUtf8(Constants.ANNOTATION_DEFAULT);
      size += 6 + defaultValue.length;
    }
    if (parameters != null) {
      symbolTable.addConstantUtf8(Constants.METHOD_PARAMETERS);
      // 6 header bytes and 1 byte for parameters_count.
      size += 7 + parameters.length;
    }
    if (firstAttribute != null) {
      size += firstAttribute.computeAttributesSize(symbolTable);
    }
    return size;
  }
int computeMethodInfoSize() {
    // If this method_info must be copied from an existing one, the size computation is trivial.
    if (sourceOffset != 0) {
      // sourceLength excludes the first 6 bytes for access_flags, name_index and descriptor_index.
      return 6 + sourceLength;
    }
    // 2 bytes each for access_flags, name_index, descriptor_index and attributes_count.
    int size = 8;
    // For ease of reference, we use here the same attribute order as in Section 4.7 of the JVMS.
    if (code.length > 0) {
      if (code.length > 65535) {
        throw new MethodTooLargeException(
            symbolTable.getClassName(), name, descriptor, code.length);
      }
      symbolTable.addConstantUtf8(Constants.CODE);
      // The Code attribute has 6 header bytes, plus 2, 2, 4 and 2 bytes respectively for max_stack,
      // max_locals, code_length and attributes_count, plus the bytecode and the exception table.
      size += 16 + code.length + Handler.getExceptionTableSize(firstHandler);
      if (stackMapTableEntries != null) {
        boolean useStackMapTable = symbolTable.getMajorVersion() >= Opcodes.V1_6;
        symbolTable.addConstantUtf8(useStackMapTable ? Constants.STACK_MAP_TABLE : "StackMap");
        // 6 header bytes and 2 bytes for number_of_entries.
        size += 8 + stackMapTableEntries.length;
      }
      if (lineNumberTable != null) {
        symbolTable.addConstantUtf8(Constants.LINE_NUMBER_TABLE);
        // 6 header bytes and 2 bytes for line_number_table_length.
        size += 8 + lineNumberTable.length;
      }
      if (localVariableTable != null) {
        symbolTable.addConstantUtf8(Constants.LOCAL_VARIABLE_TABLE);
        // 6 header bytes and 2 bytes for local_variable_table_length.
        size += 8 + localVariableTable.length;
      }
      if (localVariableTypeTable != null) {
        symbolTable.addConstantUtf8(Constants.LOCAL_VARIABLE_TYPE_TABLE);
        // 6 header bytes and 2 bytes for local_variable_type_table_length.
        size += 8 + localVariableTypeTable.length;
      }
      if (lastCodeRuntimeVisibleTypeAnnotation != null) {
        size +=
            lastCodeRuntimeVisibleTypeAnnotation.computeAnnotationsSize(
                Constants.RUNTIME_VISIBLE_TYPE_ANNOTATIONS);
      }
      if (lastCodeRuntimeInvisibleTypeAnnotation != null) {
        size +=
            lastCodeRuntimeInvisibleTypeAnnotation.computeAnnotationsSize(
                Constants.RUNTIME_INVISIBLE_TYPE_ANNOTATIONS);
      }
      if (firstCodeAttribute != null) {
        size +=
            firstCodeAttribute.computeAttributesSize(
                symbolTable, code.data, code.length, maxStack, maxLocals);
      }
    }
    if (numberOfExceptions > 0) {
      symbolTable.addConstantUtf8(Constants.EXCEPTIONS);
      size += 8 + 2 * numberOfExceptions;
    }
    boolean useSyntheticAttribute = symbolTable.getMajorVersion() < Opcodes.V1_5;
    if ((accessFlags & Opcodes.ACC_SYNTHETIC) != 0 && useSyntheticAttribute) {
      symbolTable.addConstantUtf8(Constants.SYNTHETIC);
      size += 6;
    }
    if (signatureIndex != 0) {
      symbolTable.addConstantUtf8(Constants.SIGNATURE);
      size += 8;
    }
    if ((accessFlags & Opcodes.ACC_DEPRECATED) != 0) {
      symbolTable.addConstantUtf8(Constants.DEPRECATED);
      size += 6;
    }
    if (lastRuntimeVisibleAnnotation != null) {
      size +=
          lastRuntimeVisibleAnnotation.computeAnnotationsSize(
              Constants.RUNTIME_VISIBLE_ANNOTATIONS);
    }
    if (lastRuntimeInvisibleAnnotation != null) {
      size +=
          lastRuntimeInvisibleAnnotation.computeAnnotationsSize(
              Constants.RUNTIME_INVISIBLE_ANNOTATIONS);
    }
    if (lastRuntimeVisibleParameterAnnotations != null) {
      size +=
          AnnotationWriter.computeParameterAnnotationsSize(
              Constants.RUNTIME_VISIBLE_PARAMETER_ANNOTATIONS,
              lastRuntimeVisibleParameterAnnotations,
              visibleAnnotableParameterCount == 0
                  ? lastRuntimeVisibleParameterAnnotations.length
                  : visibleAnnotableParameterCount);
    }
    if (lastRuntimeInvisibleParameterAnnotations != null) {
      size +=
          AnnotationWriter.computeParameterAnnotationsSize(
              Constants.RUNTIME_INVISIBLE_PARAMETER_ANNOTATIONS,
              lastRuntimeInvisibleParameterAnnotations,
              invisibleAnnotableParameterCount == 0
                  ? lastRuntimeInvisibleParameterAnnotations.length
                  : invisibleAnnotableParameterCount);
    }
    if (lastRuntimeVisibleTypeAnnotation != null) {
      size +=
          lastRuntimeVisibleTypeAnnotation.computeAnnotationsSize(
              Constants.RUNTIME_VISIBLE_TYPE_ANNOTATIONS);
    }
    if (lastRuntimeInvisibleTypeAnnotation != null) {
      size +=
          lastRuntimeInvisibleTypeAnnotation.computeAnnotationsSize(
              Constants.RUNTIME_INVISIBLE_TYPE_ANNOTATIONS);
    }
    if (defaultValue != null) {
      symbolTable.addConstantUtf8(Constants.ANNOTATION_DEFAULT);
      size += 6 + defaultValue.length;
    }
    if (parameters != null) {
      symbolTable.addConstantUtf8(Constants.METHOD_PARAMETERS);
      // 6 header bytes and 1 byte for parameters_count.
      size += 7 + parameters.length;
    }
    if (firstAttribute != null) {
      size += firstAttribute.computeAttributesSize(symbolTable);
    }
    return size;
  }
Returns the size of the method_info JVMS structure generated by this MethodWriter. Also add the
names of the attributes of this method in the constant pool.

@return the size in bytes of the method_info JVMS structure.