javacc-7.0.4.src.main.resources.templates.cpp.SimpleNodeImpl.template Maven / Gradle / Ivy

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  SimpleNode::SimpleNode(int i)
#if NODE_EXTENDS
   : ${NODE_EXTENDS}(), parent(nullptr), value(nullptr)
#fi
{
    id = i;
    parser = nullptr;
    value = nullptr;
  }

  SimpleNode::SimpleNode(${PARSER_NAME} *p, int i)
#if NODE_EXTENDS
   : ${NODE_EXTENDS}(), parent(nullptr), value(nullptr)
#fi
{
    id = i;
    parser = p;
    value = nullptr;
  }

  void SimpleNode::jjtOpen() const {
  }

  void SimpleNode::jjtClose() const {
  }

  void SimpleNode::jjtSetParent(Node *n) { parent = n; }
  Node *SimpleNode::jjtGetParent() const { return parent; }

  void SimpleNode::jjtAddChild(Node *n, int i) {
    if (i >= children.size()) {
      children.resize(i + 1, nullptr);
    }

    children[i] = n;
  }

  Node *SimpleNode::jjtGetChild(int i) const {
    return i < children.size() ? children[i] : nullptr;
  }

  int SimpleNode::jjtGetNumChildren() const {
    return children.size();
  }

  void SimpleNode::jjtSetValue(void * value) { this->value = value; }
  void * SimpleNode::jjtGetValue() const { return value; }

#if TRACK_TOKENS
  Token* SimpleNode::jjtGetFirstToken() const { return firstToken; }
  void SimpleNode::jjtSetFirstToken(Token* token) { this->firstToken = token; }
  Token* SimpleNode::jjtGetLastToken() const { return lastToken; }
  void SimpleNode::jjtSetLastToken(Token* token) { this->lastToken = token; }

#fi
#if VISITOR
  /** Accept the visitor. **/
  ${VISITOR_RETURN_TYPE} SimpleNode::jjtAccept(${PARSER_NAME}Visitor *visitor, ${VISITOR_DATA_TYPE:-void *} data) const
{
#if VISITOR_RETURN_TYPE_VOID
    visitor->visit(this, data);
#else
    return visitor->visit(this, data);
#fi
  }

  /** Accept the visitor. **/
  void SimpleNode::childrenAccept(${PARSER_NAME}Visitor *visitor, ${VISITOR_DATA_TYPE:-void *} data) const {
    for (int i = 0; i < children.size(); ++i) {
      children[i]->jjtAccept(visitor, data);
    }
  }

#fi
  /* You can override these two methods in subclasses of SimpleNode to
     customize the way the node appears when the tree is dumped.  If
     your output uses more than one line you should override
     toString(string), otherwise overriding toString() is probably all
     you need to do. */

  JJString SimpleNode::toString() const { return jjtNodeName[id]; }
  JJString SimpleNode::toString(const JJString& prefix) const { return prefix + toString(); }

  static JJChar space_char_arr_[] = { ' ', '\0' };
  static JJChar newline_char_arr_[] = { '\n', '\0' };
  static JJString space = space_char_arr_;
  static JJString newline = newline_char_arr_;

  /* Override this method if you want to customize how the node dumps
     out its children. */

  void SimpleNode::dumpToBuffer(const JJString& prefix, const JJString& separator, JJString *buffer) const {
    buffer->append(toString(prefix));
    buffer->append(separator);
    for (int i = 0; i < children.size(); ++i) {
      SimpleNode *n = (SimpleNode*)children[i];
      if (n != nullptr) {
        n->dumpToBuffer(prefix + space, separator, buffer);
      }
    }
  }

  void SimpleNode::dump(const JJString& prefix) const {
    JJString *buffer = new JJString();
    dumpToBuffer(prefix, newline, buffer);
    for (int i = 0; i < buffer->size(); i++) {
      printf("%c", (*buffer)[i]);
    }
    delete buffer;
  }

  // Clear list of children, and return children that we have before.
  // Used in destructor to do linear destruction of tree.
  std::vector SimpleNode::jjtExtractChildrenForDestruction() {
    std::vector ret;
    ret.swap(children);
    return ret;
  }

  // When tree generated, it deepness can be high, so trying to destruct it
  // with simple recursive destruction can cause stack overflow. Thus we get
  // each node's children, put them into destruction queue and destruct node.
  // That is linear, non-recursive process, unsing memory instead of stack.
  SimpleNode::~SimpleNode() {
    std::vector tree = children;
    std::vector nodes;
    for (int i = 0; i < tree.size(); ++i) {
      if (tree[i]) {
        nodes = tree[i]->jjtExtractChildrenForDestruction();
        for (Node* child : nodes) {
          tree.push_back(child);
        }
      }
    }

    for (Node* node : tree) {
      delete node;
    }
  }