@gdquest/gd-exercise/dist/dist-54ZSWCEP.mjs

Core package that handles logic for the GDExercise project.

import "./chunk-MJPHVYKR.mjs";

// ../codemirror-gdscript/dist/index.mjs
import {
  foldNodeProp,
  foldInside,
  indentNodeProp,
  LRLanguage,
  LanguageSupport
} from "@codemirror/language";

// ../../node_modules/.pnpm/@lezer+common@1.0.4/node_modules/@lezer/common/dist/index.js
var DefaultBufferLength = 1024;
var nextPropID = 0;
var Range = class {
  constructor(from, to) {
    this.from = from;
    this.to = to;
  }
};
var NodeProp = class {
  /**
  Create a new node prop type.
  */
  constructor(config = {}) {
    this.id = nextPropID++;
    this.perNode = !!config.perNode;
    this.deserialize = config.deserialize || (() => {
      throw new Error("This node type doesn't define a deserialize function");
    });
  }
  /**
  This is meant to be used with
  [`NodeSet.extend`](#common.NodeSet.extend) or
  [`LRParser.configure`](#lr.ParserConfig.props) to compute
  prop values for each node type in the set. Takes a [match
  object](#common.NodeType^match) or function that returns undefined
  if the node type doesn't get this prop, and the prop's value if
  it does.
  */
  add(match) {
    if (this.perNode)
      throw new RangeError("Can't add per-node props to node types");
    if (typeof match != "function")
      match = NodeType.match(match);
    return (type) => {
      let result = match(type);
      return result === void 0 ? null : [this, result];
    };
  }
};
NodeProp.closedBy = new NodeProp({ deserialize: (str) => str.split(" ") });
NodeProp.openedBy = new NodeProp({ deserialize: (str) => str.split(" ") });
NodeProp.group = new NodeProp({ deserialize: (str) => str.split(" ") });
NodeProp.contextHash = new NodeProp({ perNode: true });
NodeProp.lookAhead = new NodeProp({ perNode: true });
NodeProp.mounted = new NodeProp({ perNode: true });
var noProps = /* @__PURE__ */ Object.create(null);
var NodeType = class _NodeType2 {
  /**
  @internal
  */
  constructor(name2, props, id2, flags = 0) {
    this.name = name2;
    this.props = props;
    this.id = id2;
    this.flags = flags;
  }
  /**
  Define a node type.
  */
  static define(spec) {
    let props = spec.props && spec.props.length ? /* @__PURE__ */ Object.create(null) : noProps;
    let flags = (spec.top ? 1 : 0) | (spec.skipped ? 2 : 0) | (spec.error ? 4 : 0) | (spec.name == null ? 8 : 0);
    let type = new _NodeType2(spec.name || "", props, spec.id, flags);
    if (spec.props)
      for (let src of spec.props) {
        if (!Array.isArray(src))
          src = src(type);
        if (src) {
          if (src[0].perNode)
            throw new RangeError("Can't store a per-node prop on a node type");
          props[src[0].id] = src[1];
        }
      }
    return type;
  }
  /**
  Retrieves a node prop for this type. Will return `undefined` if
  the prop isn't present on this node.
  */
  prop(prop) {
    return this.props[prop.id];
  }
  /**
  True when this is the top node of a grammar.
  */
  get isTop() {
    return (this.flags & 1) > 0;
  }
  /**
  True when this node is produced by a skip rule.
  */
  get isSkipped() {
    return (this.flags & 2) > 0;
  }
  /**
  Indicates whether this is an error node.
  */
  get isError() {
    return (this.flags & 4) > 0;
  }
  /**
  When true, this node type doesn't correspond to a user-declared
  named node, for example because it is used to cache repetition.
  */
  get isAnonymous() {
    return (this.flags & 8) > 0;
  }
  /**
  Returns true when this node's name or one of its
  [groups](#common.NodeProp^group) matches the given string.
  */
  is(name2) {
    if (typeof name2 == "string") {
      if (this.name == name2)
        return true;
      let group = this.prop(NodeProp.group);
      return group ? group.indexOf(name2) > -1 : false;
    }
    return this.id == name2;
  }
  /**
  Create a function from node types to arbitrary values by
  specifying an object whose property names are node or
  [group](#common.NodeProp^group) names. Often useful with
  [`NodeProp.add`](#common.NodeProp.add). You can put multiple
  names, separated by spaces, in a single property name to map
  multiple node names to a single value.
  */
  static match(map) {
    let direct = /* @__PURE__ */ Object.create(null);
    for (let prop in map)
      for (let name2 of prop.split(" "))
        direct[name2] = map[prop];
    return (node) => {
      for (let groups = node.prop(NodeProp.group), i = -1; i < (groups ? groups.length : 0); i++) {
        let found = direct[i < 0 ? node.name : groups[i]];
        if (found)
          return found;
      }
    };
  }
};
NodeType.none = new NodeType(
  "",
  /* @__PURE__ */ Object.create(null),
  0,
  8
  /* NodeFlag.Anonymous */
);
var NodeSet = class _NodeSet {
  /**
  Create a set with the given types. The `id` property of each
  type should correspond to its position within the array.
  */
  constructor(types) {
    this.types = types;
    for (let i = 0; i < types.length; i++)
      if (types[i].id != i)
        throw new RangeError("Node type ids should correspond to array positions when creating a node set");
  }
  /**
  Create a copy of this set with some node properties added. The
  arguments to this method can be created with
  [`NodeProp.add`](#common.NodeProp.add).
  */
  extend(...props) {
    let newTypes = [];
    for (let type of this.types) {
      let newProps = null;
      for (let source of props) {
        let add = source(type);
        if (add) {
          if (!newProps)
            newProps = Object.assign({}, type.props);
          newProps[add[0].id] = add[1];
        }
      }
      newTypes.push(newProps ? new NodeType(type.name, newProps, type.id, type.flags) : type);
    }
    return new _NodeSet(newTypes);
  }
};
var CachedNode = /* @__PURE__ */ new WeakMap();
var CachedInnerNode = /* @__PURE__ */ new WeakMap();
var IterMode;
(function(IterMode3) {
  IterMode3[IterMode3["ExcludeBuffers"] = 1] = "ExcludeBuffers";
  IterMode3[IterMode3["IncludeAnonymous"] = 2] = "IncludeAnonymous";
  IterMode3[IterMode3["IgnoreMounts"] = 4] = "IgnoreMounts";
  IterMode3[IterMode3["IgnoreOverlays"] = 8] = "IgnoreOverlays";
})(IterMode || (IterMode = {}));
var Tree = class _Tree2 {
  /**
  Construct a new tree. See also [`Tree.build`](#common.Tree^build).
  */
  constructor(type, children, positions, length, props) {
    this.type = type;
    this.children = children;
    this.positions = positions;
    this.length = length;
    this.props = null;
    if (props && props.length) {
      this.props = /* @__PURE__ */ Object.create(null);
      for (let [prop, value] of props)
        this.props[typeof prop == "number" ? prop : prop.id] = value;
    }
  }
  /**
  @internal
  */
  toString() {
    let mounted = this.prop(NodeProp.mounted);
    if (mounted && !mounted.overlay)
      return mounted.tree.toString();
    let children = "";
    for (let ch of this.children) {
      let str = ch.toString();
      if (str) {
        if (children)
          children += ",";
        children += str;
      }
    }
    return !this.type.name ? children : (/\W/.test(this.type.name) && !this.type.isError ? JSON.stringify(this.type.name) : this.type.name) + (children.length ? "(" + children + ")" : "");
  }
  /**
  Get a [tree cursor](#common.TreeCursor) positioned at the top of
  the tree. Mode can be used to [control](#common.IterMode) which
  nodes the cursor visits.
  */
  cursor(mode = 0) {
    return new TreeCursor(this.topNode, mode);
  }
  /**
  Get a [tree cursor](#common.TreeCursor) pointing into this tree
  at the given position and side (see
  [`moveTo`](#common.TreeCursor.moveTo).
  */
  cursorAt(pos, side = 0, mode = 0) {
    let scope = CachedNode.get(this) || this.topNode;
    let cursor = new TreeCursor(scope);
    cursor.moveTo(pos, side);
    CachedNode.set(this, cursor._tree);
    return cursor;
  }
  /**
  Get a [syntax node](#common.SyntaxNode) object for the top of the
  tree.
  */
  get topNode() {
    return new TreeNode(this, 0, 0, null);
  }
  /**
  Get the [syntax node](#common.SyntaxNode) at the given position.
  If `side` is -1, this will move into nodes that end at the
  position. If 1, it'll move into nodes that start at the
  position. With 0, it'll only enter nodes that cover the position
  from both sides.
  
  Note that this will not enter
  [overlays](#common.MountedTree.overlay), and you often want
  [`resolveInner`](#common.Tree.resolveInner) instead.
  */
  resolve(pos, side = 0) {
    let node = resolveNode(CachedNode.get(this) || this.topNode, pos, side, false);
    CachedNode.set(this, node);
    return node;
  }
  /**
  Like [`resolve`](#common.Tree.resolve), but will enter
  [overlaid](#common.MountedTree.overlay) nodes, producing a syntax node
  pointing into the innermost overlaid tree at the given position
  (with parent links going through all parent structure, including
  the host trees).
  */
  resolveInner(pos, side = 0) {
    let node = resolveNode(CachedInnerNode.get(this) || this.topNode, pos, side, true);
    CachedInnerNode.set(this, node);
    return node;
  }
  /**
  Iterate over the tree and its children, calling `enter` for any
  node that touches the `from`/`to` region (if given) before
  running over such a node's children, and `leave` (if given) when
  leaving the node. When `enter` returns `false`, that node will
  not have its children iterated over (or `leave` called).
  */
  iterate(spec) {
    let { enter, leave, from = 0, to = this.length } = spec;
    let mode = spec.mode || 0, anon = (mode & IterMode.IncludeAnonymous) > 0;
    for (let c = this.cursor(mode | IterMode.IncludeAnonymous); ; ) {
      let entered = false;
      if (c.from <= to && c.to >= from && (!anon && c.type.isAnonymous || enter(c) !== false)) {
        if (c.firstChild())
          continue;
        entered = true;
      }
      for (; ; ) {
        if (entered && leave && (anon || !c.type.isAnonymous))
          leave(c);
        if (c.nextSibling())
          break;
        if (!c.parent())
          return;
        entered = true;
      }
    }
  }
  /**
  Get the value of the given [node prop](#common.NodeProp) for this
  node. Works with both per-node and per-type props.
  */
  prop(prop) {
    return !prop.perNode ? this.type.prop(prop) : this.props ? this.props[prop.id] : void 0;
  }
  /**
  Returns the node's [per-node props](#common.NodeProp.perNode) in a
  format that can be passed to the [`Tree`](#common.Tree)
  constructor.
  */
  get propValues() {
    let result = [];
    if (this.props)
      for (let id2 in this.props)
        result.push([+id2, this.props[id2]]);
    return result;
  }
  /**
  Balance the direct children of this tree, producing a copy of
  which may have children grouped into subtrees with type
  [`NodeType.none`](#common.NodeType^none).
  */
  balance(config = {}) {
    return this.children.length <= 8 ? this : balanceRange(NodeType.none, this.children, this.positions, 0, this.children.length, 0, this.length, (children, positions, length) => new _Tree2(this.type, children, positions, length, this.propValues), config.makeTree || ((children, positions, length) => new _Tree2(NodeType.none, children, positions, length)));
  }
  /**
  Build a tree from a postfix-ordered buffer of node information,
  or a cursor over such a buffer.
  */
  static build(data) {
    return buildTree(data);
  }
};
Tree.empty = new Tree(NodeType.none, [], [], 0);
var FlatBufferCursor = class _FlatBufferCursor2 {
  constructor(buffer, index) {
    this.buffer = buffer;
    this.index = index;
  }
  get id() {
    return this.buffer[this.index - 4];
  }
  get start() {
    return this.buffer[this.index - 3];
  }
  get end() {
    return this.buffer[this.index - 2];
  }
  get size() {
    return this.buffer[this.index - 1];
  }
  get pos() {
    return this.index;
  }
  next() {
    this.index -= 4;
  }
  fork() {
    return new _FlatBufferCursor2(this.buffer, this.index);
  }
};
var TreeBuffer = class _TreeBuffer2 {
  /**
  Create a tree buffer.
  */
  constructor(buffer, length, set) {
    this.buffer = buffer;
    this.length = length;
    this.set = set;
  }
  /**
  @internal
  */
  get type() {
    return NodeType.none;
  }
  /**
  @internal
  */
  toString() {
    let result = [];
    for (let index = 0; index < this.buffer.length; ) {
      result.push(this.childString(index));
      index = this.buffer[index + 3];
    }
    return result.join(",");
  }
  /**
  @internal
  */
  childString(index) {
    let id2 = this.buffer[index], endIndex = this.buffer[index + 3];
    let type = this.set.types[id2], result = type.name;
    if (/\W/.test(result) && !type.isError)
      result = JSON.stringify(result);
    index += 4;
    if (endIndex == index)
      return result;
    let children = [];
    while (index < endIndex) {
      children.push(this.childString(index));
      index = this.buffer[index + 3];
    }
    return result + "(" + children.join(",") + ")";
  }
  /**
  @internal
  */
  findChild(startIndex, endIndex, dir, pos, side) {
    let { buffer } = this, pick = -1;
    for (let i = startIndex; i != endIndex; i = buffer[i + 3]) {
      if (checkSide(side, pos, buffer[i + 1], buffer[i + 2])) {
        pick = i;
        if (dir > 0)
          break;
      }
    }
    return pick;
  }
  /**
  @internal
  */
  slice(startI, endI, from) {
    let b = this.buffer;
    let copy = new Uint16Array(endI - startI), len = 0;
    for (let i = startI, j = 0; i < endI; ) {
      copy[j++] = b[i++];
      copy[j++] = b[i++] - from;
      let to = copy[j++] = b[i++] - from;
      copy[j++] = b[i++] - startI;
      len = Math.max(len, to);
    }
    return new _TreeBuffer2(copy, len, this.set);
  }
};
function checkSide(side, pos, from, to) {
  switch (side) {
    case -2:
      return from < pos;
    case -1:
      return to >= pos && from < pos;
    case 0:
      return from < pos && to > pos;
    case 1:
      return from <= pos && to > pos;
    case 2:
      return to > pos;
    case 4:
      return true;
  }
}
function enterUnfinishedNodesBefore(node, pos) {
  let scan = node.childBefore(pos);
  while (scan) {
    let last = scan.lastChild;
    if (!last || last.to != scan.to)
      break;
    if (last.type.isError && last.from == last.to) {
      node = scan;
      scan = last.prevSibling;
    } else {
      scan = last;
    }
  }
  return node;
}
function resolveNode(node, pos, side, overlays) {
  var _a;
  while (node.from == node.to || (side < 1 ? node.from >= pos : node.from > pos) || (side > -1 ? node.to <= pos : node.to < pos)) {
    let parent = !overlays && node instanceof TreeNode && node.index < 0 ? null : node.parent;
    if (!parent)
      return node;
    node = parent;
  }
  let mode = overlays ? 0 : IterMode.IgnoreOverlays;
  if (overlays)
    for (let scan = node, parent = scan.parent; parent; scan = parent, parent = scan.parent) {
      if (scan instanceof TreeNode && scan.index < 0 && ((_a = parent.enter(pos, side, mode)) === null || _a === void 0 ? void 0 : _a.from) != scan.from)
        node = parent;
    }
  for (; ; ) {
    let inner = node.enter(pos, side, mode);
    if (!inner)
      return node;
    node = inner;
  }
}
var TreeNode = class _TreeNode2 {
  constructor(_tree, from, index, _parent) {
    this._tree = _tree;
    this.from = from;
    this.index = index;
    this._parent = _parent;
  }
  get type() {
    return this._tree.type;
  }
  get name() {
    return this._tree.type.name;
  }
  get to() {
    return this.from + this._tree.length;
  }
  nextChild(i, dir, pos, side, mode = 0) {
    for (let parent = this; ; ) {
      for (let { children, positions } = parent._tree, e = dir > 0 ? children.length : -1; i != e; i += dir) {
        let next = children[i], start = positions[i] + parent.from;
        if (!checkSide(side, pos, start, start + next.length))
          continue;
        if (next instanceof TreeBuffer) {
          if (mode & IterMode.ExcludeBuffers)
            continue;
          let index = next.findChild(0, next.buffer.length, dir, pos - start, side);
          if (index > -1)
            return new BufferNode(new BufferContext(parent, next, i, start), null, index);
        } else if (mode & IterMode.IncludeAnonymous || (!next.type.isAnonymous || hasChild(next))) {
          let mounted;
          if (!(mode & IterMode.IgnoreMounts) && next.props && (mounted = next.prop(NodeProp.mounted)) && !mounted.overlay)
            return new _TreeNode2(mounted.tree, start, i, parent);
          let inner = new _TreeNode2(next, start, i, parent);
          return mode & IterMode.IncludeAnonymous || !inner.type.isAnonymous ? inner : inner.nextChild(dir < 0 ? next.children.length - 1 : 0, dir, pos, side);
        }
      }
      if (mode & IterMode.IncludeAnonymous || !parent.type.isAnonymous)
        return null;
      if (parent.index >= 0)
        i = parent.index + dir;
      else
        i = dir < 0 ? -1 : parent._parent._tree.children.length;
      parent = parent._parent;
      if (!parent)
        return null;
    }
  }
  get firstChild() {
    return this.nextChild(
      0,
      1,
      0,
      4
      /* Side.DontCare */
    );
  }
  get lastChild() {
    return this.nextChild(
      this._tree.children.length - 1,
      -1,
      0,
      4
      /* Side.DontCare */
    );
  }
  childAfter(pos) {
    return this.nextChild(
      0,
      1,
      pos,
      2
      /* Side.After */
    );
  }
  childBefore(pos) {
    return this.nextChild(
      this._tree.children.length - 1,
      -1,
      pos,
      -2
      /* Side.Before */
    );
  }
  enter(pos, side, mode = 0) {
    let mounted;
    if (!(mode & IterMode.IgnoreOverlays) && (mounted = this._tree.prop(NodeProp.mounted)) && mounted.overlay) {
      let rPos = pos - this.from;
      for (let { from, to } of mounted.overlay) {
        if ((side > 0 ? from <= rPos : from < rPos) && (side < 0 ? to >= rPos : to > rPos))
          return new _TreeNode2(mounted.tree, mounted.overlay[0].from + this.from, -1, this);
      }
    }
    return this.nextChild(0, 1, pos, side, mode);
  }
  nextSignificantParent() {
    let val = this;
    while (val.type.isAnonymous && val._parent)
      val = val._parent;
    return val;
  }
  get parent() {
    return this._parent ? this._parent.nextSignificantParent() : null;
  }
  get nextSibling() {
    return this._parent && this.index >= 0 ? this._parent.nextChild(
      this.index + 1,
      1,
      0,
      4
      /* Side.DontCare */
    ) : null;
  }
  get prevSibling() {
    return this._parent && this.index >= 0 ? this._parent.nextChild(
      this.index - 1,
      -1,
      0,
      4
      /* Side.DontCare */
    ) : null;
  }
  cursor(mode = 0) {
    return new TreeCursor(this, mode);
  }
  get tree() {
    return this._tree;
  }
  toTree() {
    return this._tree;
  }
  resolve(pos, side = 0) {
    return resolveNode(this, pos, side, false);
  }
  resolveInner(pos, side = 0) {
    return resolveNode(this, pos, side, true);
  }
  enterUnfinishedNodesBefore(pos) {
    return enterUnfinishedNodesBefore(this, pos);
  }
  getChild(type, before = null, after = null) {
    let r = getChildren(this, type, before, after);
    return r.length ? r[0] : null;
  }
  getChildren(type, before = null, after = null) {
    return getChildren(this, type, before, after);
  }
  /**
  @internal
  */
  toString() {
    return this._tree.toString();
  }
  get node() {
    return this;
  }
  matchContext(context) {
    return matchNodeContext(this, context);
  }
};
function getChildren(node, type, before, after) {
  let cur = node.cursor(), result = [];
  if (!cur.firstChild())
    return result;
  if (before != null) {
    while (!cur.type.is(before))
      if (!cur.nextSibling())
        return result;
  }
  for (; ; ) {
    if (after != null && cur.type.is(after))
      return result;
    if (cur.type.is(type))
      result.push(cur.node);
    if (!cur.nextSibling())
      return after == null ? result : [];
  }
}
function matchNodeContext(node, context, i = context.length - 1) {
  for (let p = node.parent; i >= 0; p = p.parent) {
    if (!p)
      return false;
    if (!p.type.isAnonymous) {
      if (context[i] && context[i] != p.name)
        return false;
      i--;
    }
  }
  return true;
}
var BufferContext = class {
  constructor(parent, buffer, index, start) {
    this.parent = parent;
    this.buffer = buffer;
    this.index = index;
    this.start = start;
  }
};
var BufferNode = class _BufferNode2 {
  get name() {
    return this.type.name;
  }
  get from() {
    return this.context.start + this.context.buffer.buffer[this.index + 1];
  }
  get to() {
    return this.context.start + this.context.buffer.buffer[this.index + 2];
  }
  constructor(context, _parent, index) {
    this.context = context;
    this._parent = _parent;
    this.index = index;
    this.type = context.buffer.set.types[context.buffer.buffer[index]];
  }
  child(dir, pos, side) {
    let { buffer } = this.context;
    let index = buffer.findChild(this.index + 4, buffer.buffer[this.index + 3], dir, pos - this.context.start, side);
    return index < 0 ? null : new _BufferNode2(this.context, this, index);
  }
  get firstChild() {
    return this.child(
      1,
      0,
      4
      /* Side.DontCare */
    );
  }
  get lastChild() {
    return this.child(
      -1,
      0,
      4
      /* Side.DontCare */
    );
  }
  childAfter(pos) {
    return this.child(
      1,
      pos,
      2
      /* Side.After */
    );
  }
  childBefore(pos) {
    return this.child(
      -1,
      pos,
      -2
      /* Side.Before */
    );
  }
  enter(pos, side, mode = 0) {
    if (mode & IterMode.ExcludeBuffers)
      return null;
    let { buffer } = this.context;
    let index = buffer.findChild(this.index + 4, buffer.buffer[this.index + 3], side > 0 ? 1 : -1, pos - this.context.start, side);
    return index < 0 ? null : new _BufferNode2(this.context, this, index);
  }
  get parent() {
    return this._parent || this.context.parent.nextSignificantParent();
  }
  externalSibling(dir) {
    return this._parent ? null : this.context.parent.nextChild(
      this.context.index + dir,
      dir,
      0,
      4
      /* Side.DontCare */
    );
  }
  get nextSibling() {
    let { buffer } = this.context;
    let after = buffer.buffer[this.index + 3];
    if (after < (this._parent ? buffer.buffer[this._parent.index + 3] : buffer.buffer.length))
      return new _BufferNode2(this.context, this._parent, after);
    return this.externalSibling(1);
  }
  get prevSibling() {
    let { buffer } = this.context;
    let parentStart = this._parent ? this._parent.index + 4 : 0;
    if (this.index == parentStart)
      return this.externalSibling(-1);
    return new _BufferNode2(this.context, this._parent, buffer.findChild(
      parentStart,
      this.index,
      -1,
      0,
      4
      /* Side.DontCare */
    ));
  }
  cursor(mode = 0) {
    return new TreeCursor(this, mode);
  }
  get tree() {
    return null;
  }
  toTree() {
    let children = [], positions = [];
    let { buffer } = this.context;
    let startI = this.index + 4, endI = buffer.buffer[this.index + 3];
    if (endI > startI) {
      let from = buffer.buffer[this.index + 1];
      children.push(buffer.slice(startI, endI, from));
      positions.push(0);
    }
    return new Tree(this.type, children, positions, this.to - this.from);
  }
  resolve(pos, side = 0) {
    return resolveNode(this, pos, side, false);
  }
  resolveInner(pos, side = 0) {
    return resolveNode(this, pos, side, true);
  }
  enterUnfinishedNodesBefore(pos) {
    return enterUnfinishedNodesBefore(this, pos);
  }
  /**
  @internal
  */
  toString() {
    return this.context.buffer.childString(this.index);
  }
  getChild(type, before = null, after = null) {
    let r = getChildren(this, type, before, after);
    return r.length ? r[0] : null;
  }
  getChildren(type, before = null, after = null) {
    return getChildren(this, type, before, after);
  }
  get node() {
    return this;
  }
  matchContext(context) {
    return matchNodeContext(this, context);
  }
};
var TreeCursor = class {
  /**
  Shorthand for `.type.name`.
  */
  get name() {
    return this.type.name;
  }
  /**
  @internal
  */
  constructor(node, mode = 0) {
    this.mode = mode;
    this.buffer = null;
    this.stack = [];
    this.index = 0;
    this.bufferNode = null;
    if (node instanceof TreeNode) {
      this.yieldNode(node);
    } else {
      this._tree = node.context.parent;
      this.buffer = node.context;
      for (let n = node._parent; n; n = n._parent)
        this.stack.unshift(n.index);
      this.bufferNode = node;
      this.yieldBuf(node.index);
    }
  }
  yieldNode(node) {
    if (!node)
      return false;
    this._tree = node;
    this.type = node.type;
    this.from = node.from;
    this.to = node.to;
    return true;
  }
  yieldBuf(index, type) {
    this.index = index;
    let { start, buffer } = this.buffer;
    this.type = type || buffer.set.types[buffer.buffer[index]];
    this.from = start + buffer.buffer[index + 1];
    this.to = start + buffer.buffer[index + 2];
    return true;
  }
  yield(node) {
    if (!node)
      return false;
    if (node instanceof TreeNode) {
      this.buffer = null;
      return this.yieldNode(node);
    }
    this.buffer = node.context;
    return this.yieldBuf(node.index, node.type);
  }
  /**
  @internal
  */
  toString() {
    return this.buffer ? this.buffer.buffer.childString(this.index) : this._tree.toString();
  }
  /**
  @internal
  */
  enterChild(dir, pos, side) {
    if (!this.buffer)
      return this.yield(this._tree.nextChild(dir < 0 ? this._tree._tree.children.length - 1 : 0, dir, pos, side, this.mode));
    let { buffer } = this.buffer;
    let index = buffer.findChild(this.index + 4, buffer.buffer[this.index + 3], dir, pos - this.buffer.start, side);
    if (index < 0)
      return false;
    this.stack.push(this.index);
    return this.yieldBuf(index);
  }
  /**
  Move the cursor to this node's first child. When this returns
  false, the node has no child, and the cursor has not been moved.
  */
  firstChild() {
    return this.enterChild(
      1,
      0,
      4
      /* Side.DontCare */
    );
  }
  /**
  Move the cursor to this node's last child.
  */
  lastChild() {
    return this.enterChild(
      -1,
      0,
      4
      /* Side.DontCare */
    );
  }
  /**
  Move the cursor to the first child that ends after `pos`.
  */
  childAfter(pos) {
    return this.enterChild(
      1,
      pos,
      2
      /* Side.After */
    );
  }
  /**
  Move to the last child that starts before `pos`.
  */
  childBefore(pos) {
    return this.enterChild(
      -1,
      pos,
      -2
      /* Side.Before */
    );
  }
  /**
  Move the cursor to the child around `pos`. If side is -1 the
  child may end at that position, when 1 it may start there. This
  will also enter [overlaid](#common.MountedTree.overlay)
  [mounted](#common.NodeProp^mounted) trees unless `overlays` is
  set to false.
  */
  enter(pos, side, mode = this.mode) {
    if (!this.buffer)
      return this.yield(this._tree.enter(pos, side, mode));
    return mode & IterMode.ExcludeBuffers ? false : this.enterChild(1, pos, side);
  }
  /**
  Move to the node's parent node, if this isn't the top node.
  */
  parent() {
    if (!this.buffer)
      return this.yieldNode(this.mode & IterMode.IncludeAnonymous ? this._tree._parent : this._tree.parent);
    if (this.stack.length)
      return this.yieldBuf(this.stack.pop());
    let parent = this.mode & IterMode.IncludeAnonymous ? this.buffer.parent : this.buffer.parent.nextSignificantParent();
    this.buffer = null;
    return this.yieldNode(parent);
  }
  /**
  @internal
  */
  sibling(dir) {
    if (!this.buffer)
      return !this._tree._parent ? false : this.yield(this._tree.index < 0 ? null : this._tree._parent.nextChild(this._tree.index + dir, dir, 0, 4, this.mode));
    let { buffer } = this.buffer, d = this.stack.length - 1;
    if (dir < 0) {
      let parentStart = d < 0 ? 0 : this.stack[d] + 4;
      if (this.index != parentStart)
        return this.yieldBuf(buffer.findChild(
          parentStart,
          this.index,
          -1,
          0,
          4
          /* Side.DontCare */
        ));
    } else {
      let after = buffer.buffer[this.index + 3];
      if (after < (d < 0 ? buffer.buffer.length : buffer.buffer[this.stack[d] + 3]))
        return this.yieldBuf(after);
    }
    return d < 0 ? this.yield(this.buffer.parent.nextChild(this.buffer.index + dir, dir, 0, 4, this.mode)) : false;
  }
  /**
  Move to this node's next sibling, if any.
  */
  nextSibling() {
    return this.sibling(1);
  }
  /**
  Move to this node's previous sibling, if any.
  */
  prevSibling() {
    return this.sibling(-1);
  }
  atLastNode(dir) {
    let index, parent, { buffer } = this;
    if (buffer) {
      if (dir > 0) {
        if (this.index < buffer.buffer.buffer.length)
          return false;
      } else {
        for (let i = 0; i < this.index; i++)
          if (buffer.buffer.buffer[i + 3] < this.index)
            return false;
      }
      ({ index, parent } = buffer);
    } else {
      ({ index, _parent: parent } = this._tree);
    }
    for (; parent; { index, _parent: parent } = parent) {
      if (index > -1)
        for (let i = index + dir, e = dir < 0 ? -1 : parent._tree.children.length; i != e; i += dir) {
          let child = parent._tree.children[i];
          if (this.mode & IterMode.IncludeAnonymous || child instanceof TreeBuffer || !child.type.isAnonymous || hasChild(child))
            return false;
        }
    }
    return true;
  }
  move(dir, enter) {
    if (enter && this.enterChild(
      dir,
      0,
      4
      /* Side.DontCare */
    ))
      return true;
    for (; ; ) {
      if (this.sibling(dir))
        return true;
      if (this.atLastNode(dir) || !this.parent())
        return false;
    }
  }
  /**
  Move to the next node in a
  [pre-order](https://en.wikipedia.org/wiki/Tree_traversal#Pre-order,_NLR)
  traversal, going from a node to its first child or, if the
  current node is empty or `enter` is false, its next sibling or
  the next sibling of the first parent node that has one.
  */
  next(enter = true) {
    return this.move(1, enter);
  }
  /**
  Move to the next node in a last-to-first pre-order traveral. A
  node is followed by its last child or, if it has none, its
  previous sibling or the previous sibling of the first parent
  node that has one.
  */
  prev(enter = true) {
    return this.move(-1, enter);
  }
  /**
  Move the cursor to the innermost node that covers `pos`. If
  `side` is -1, it will enter nodes that end at `pos`. If it is 1,
  it will enter nodes that start at `pos`.
  */
  moveTo(pos, side = 0) {
    while (this.from == this.to || (side < 1 ? this.from >= pos : this.from > pos) || (side > -1 ? this.to <= pos : this.to < pos))
      if (!this.parent())
        break;
    while (this.enterChild(1, pos, side)) {
    }
    return this;
  }
  /**
  Get a [syntax node](#common.SyntaxNode) at the cursor's current
  position.
  */
  get node() {
    if (!this.buffer)
      return this._tree;
    let cache2 = this.bufferNode, result = null, depth = 0;
    if (cache2 && cache2.context == this.buffer) {
      scan:
        for (let index = this.index, d = this.stack.length; d >= 0; ) {
          for (let c = cache2; c; c = c._parent)
            if (c.index == index) {
              if (index == this.index)
                return c;
              result = c;
              depth = d + 1;
              break scan;
            }
          index = this.stack[--d];
        }
    }
    for (let i = depth; i < this.stack.length; i++)
      result = new BufferNode(this.buffer, result, this.stack[i]);
    return this.bufferNode = new BufferNode(this.buffer, result, this.index);
  }
  /**
  Get the [tree](#common.Tree) that represents the current node, if
  any. Will return null when the node is in a [tree
  buffer](#common.TreeBuffer).
  */
  get tree() {
    return this.buffer ? null : this._tree._tree;
  }
  /**
  Iterate over the current node and all its descendants, calling
  `enter` when entering a node and `leave`, if given, when leaving
  one. When `enter` returns `false`, any children of that node are
  skipped, and `leave` isn't called for it.
  */
  iterate(enter, leave) {
    for (let depth = 0; ; ) {
      let mustLeave = false;
      if (this.type.isAnonymous || enter(this) !== false) {
        if (this.firstChild()) {
          depth++;
          continue;
        }
        if (!this.type.isAnonymous)
          mustLeave = true;
      }
      for (; ; ) {
        if (mustLeave && leave)
          leave(this);
        mustLeave = this.type.isAnonymous;
        if (this.nextSibling())
          break;
        if (!depth)
          return;
        this.parent();
        depth--;
        mustLeave = true;
      }
    }
  }
  /**
  Test whether the current node matches a given context—a sequence
  of direct parent node names. Empty strings in the context array
  are treated as wildcards.
  */
  matchContext(context) {
    if (!this.buffer)
      return matchNodeContext(this.node, context);
    let { buffer } = this.buffer, { types } = buffer.set;
    for (let i = context.length - 1, d = this.stack.length - 1; i >= 0; d--) {
      if (d < 0)
        return matchNodeContext(this.node, context, i);
      let type = types[buffer.buffer[this.stack[d]]];
      if (!type.isAnonymous) {
        if (context[i] && context[i] != type.name)
          return false;
        i--;
      }
    }
    return true;
  }
};
function hasChild(tree) {
  return tree.children.some((ch) => ch instanceof TreeBuffer || !ch.type.isAnonymous || hasChild(ch));
}
function buildTree(data) {
  var _a;
  let { buffer, nodeSet, maxBufferLength = DefaultBufferLength, reused = [], minRepeatType = nodeSet.types.length } = data;
  let cursor = Array.isArray(buffer) ? new FlatBufferCursor(buffer, buffer.length) : buffer;
  let types = nodeSet.types;
  let contextHash = 0, lookAhead = 0;
  function takeNode(parentStart, minPos, children2, positions2, inRepeat) {
    let { id: id2, start, end, size } = cursor;
    let lookAheadAtStart = lookAhead;
    while (size < 0) {
      cursor.next();
      if (size == -1) {
        let node2 = reused[id2];
        children2.push(node2);
        positions2.push(start - parentStart);
        return;
      } else if (size == -3) {
        contextHash = id2;
        return;
      } else if (size == -4) {
        lookAhead = id2;
        return;
      } else {
        throw new RangeError(`Unrecognized record size: ${size}`);
      }
    }
    let type = types[id2], node, buffer2;
    let startPos = start - parentStart;
    if (end - start <= maxBufferLength && (buffer2 = findBufferSize(cursor.pos - minPos, inRepeat))) {
      let data2 = new Uint16Array(buffer2.size - buffer2.skip);
      let endPos = cursor.pos - buffer2.size, index = data2.length;
      while (cursor.pos > endPos)
        index = copyToBuffer(buffer2.start, data2, index);
      node = new TreeBuffer(data2, end - buffer2.start, nodeSet);
      startPos = buffer2.start - parentStart;
    } else {
      let endPos = cursor.pos - size;
      cursor.next();
      let localChildren = [], localPositions = [];
      let localInRepeat = id2 >= minRepeatType ? id2 : -1;
      let lastGroup = 0, lastEnd = end;
      while (cursor.pos > endPos) {
        if (localInRepeat >= 0 && cursor.id == localInRepeat && cursor.size >= 0) {
          if (cursor.end <= lastEnd - maxBufferLength) {
            makeRepeatLeaf(localChildren, localPositions, start, lastGroup, cursor.end, lastEnd, localInRepeat, lookAheadAtStart);
            lastGroup = localChildren.length;
            lastEnd = cursor.end;
          }
          cursor.next();
        } else {
          takeNode(start, endPos, localChildren, localPositions, localInRepeat);
        }
      }
      if (localInRepeat >= 0 && lastGroup > 0 && lastGroup < localChildren.length)
        makeRepeatLeaf(localChildren, localPositions, start, lastGroup, start, lastEnd, localInRepeat, lookAheadAtStart);
      localChildren.reverse();
      localPositions.reverse();
      if (localInRepeat > -1 && lastGroup > 0) {
        let make = makeBalanced(type);
        node = balanceRange(type, localChildren, localPositions, 0, localChildren.length, 0, end - start, make, make);
      } else {
        node = makeTree(type, localChildren, localPositions, end - start, lookAheadAtStart - end);
      }
    }
    children2.push(node);
    positions2.push(startPos);
  }
  function makeBalanced(type) {
    return (children2, positions2, length2) => {
      let lookAhead2 = 0, lastI = children2.length - 1, last, lookAheadProp;
      if (lastI >= 0 && (last = children2[lastI]) instanceof Tree) {
        if (!lastI && last.type == type && last.length == length2)
          return last;
        if (lookAheadProp = last.prop(NodeProp.lookAhead))
          lookAhead2 = positions2[lastI] + last.length + lookAheadProp;
      }
      return makeTree(type, children2, positions2, length2, lookAhead2);
    };
  }
  function makeRepeatLeaf(children2, positions2, base, i, from, to, type, lookAhead2) {
    let localChildren = [], localPositions = [];
    while (children2.length > i) {
      localChildren.push(children2.pop());
      localPositions.push(positions2.pop() + base - from);
    }
    children2.push(makeTree(nodeSet.types[type], localChildren, localPositions, to - from, lookAhead2 - to));
    positions2.push(from - base);
  }
  function makeTree(type, children2, positions2, length2, lookAhead2 = 0, props) {
    if (contextHash) {
      let pair2 = [NodeProp.contextHash, contextHash];
      props = props ? [pair2].concat(props) : [pair2];
    }
    if (lookAhead2 > 25) {
      let pair2 = [NodeProp.lookAhead, lookAhead2];
      props = props ? [pair2].concat(props) : [pair2];
    }
    return new Tree(type, children2, positions2, length2, props);
  }
  function findBufferSize(maxSize, inRepeat) {
    let fork = cursor.fork();
    let size = 0, start = 0, skip = 0, minStart = fork.end - maxBufferLength;
    let result = { size: 0, start: 0, skip: 0 };
    scan:
      for (let minPos = fork.pos - maxSize; fork.pos > minPos; ) {
        let nodeSize3 = fork.size;
        if (fork.id == inRepeat && nodeSize3 >= 0) {
          result.size = size;
          result.start = start;
          result.skip = skip;
          skip += 4;
          size += 4;
          fork.next();
          continue;
        }
        let startPos = fork.pos - nodeSize3;
        if (nodeSize3 < 0 || startPos < minPos || fork.start < minStart)
          break;
        let localSkipped = fork.id >= minRepeatType ? 4 : 0;
        let nodeStart = fork.start;
        fork.next();
        while (fork.pos > startPos) {
          if (fork.size < 0) {
            if (fork.size == -3)
              localSkipped += 4;
            else
              break scan;
          } else if (fork.id >= minRepeatType) {
            localSkipped += 4;
          }
          fork.next();
        }
        start = nodeStart;
        size += nodeSize3;
        skip += localSkipped;
      }
    if (inRepeat < 0 || size == maxSize) {
      result.size = size;
      result.start = start;
      result.skip = skip;
    }
    return result.size > 4 ? result : void 0;
  }
  function copyToBuffer(bufferStart, buffer2, index) {
    let { id: id2, start, end, size } = cursor;
    cursor.next();
    if (size >= 0 && id2 < minRepeatType) {
      let startIndex = index;
      if (size > 4) {
        let endPos = cursor.pos - (size - 4);
        while (cursor.pos > endPos)
          index = copyToBuffer(bufferStart, buffer2, index);
      }
      buffer2[--index] = startIndex;
      buffer2[--index] = end - bufferStart;
      buffer2[--index] = start - bufferStart;
      buffer2[--index] = id2;
    } else if (size == -3) {
      contextHash = id2;
    } else if (size == -4) {
      lookAhead = id2;
    }
    return index;
  }
  let children = [], positions = [];
  while (cursor.pos > 0)
    takeNode(data.start || 0, data.bufferStart || 0, children, positions, -1);
  let length = (_a = data.length) !== null && _a !== void 0 ? _a : children.length ? positions[0] + children[0].length : 0;
  return new Tree(types[data.topID], children.reverse(), positions.reverse(), length);
}
var nodeSizeCache = /* @__PURE__ */ new WeakMap();
function nodeSize(balanceType, node) {
  if (!balanceType.isAnonymous || node instanceof TreeBuffer || node.type != balanceType)
    return 1;
  let size = nodeSizeCache.get(node);
  if (size == null) {
    size = 1;
    for (let child of node.children) {
      if (child.type != balanceType || !(child instanceof Tree)) {
        size = 1;
        break;
      }
      size += nodeSize(balanceType, child);
    }
    nodeSizeCache.set(node, size);
  }
  return size;
}
function balanceRange(balanceType, children, positions, from, to, start, length, mkTop, mkTree) {
  let total = 0;
  for (let i = from; i < to; i++)
    total += nodeSize(balanceType, children[i]);
  let maxChild = Math.ceil(
    total * 1.5 / 8
    /* Balance.BranchFactor */
  );
  let localChildren = [], localPositions = [];
  function divide(children2, positions2, from2, to2, offset) {
    for (let i = from2; i < to2; ) {
      let groupFrom = i, groupStart = positions2[i], groupSize = nodeSize(balanceType, children2[i]);
      i++;
      for (; i < to2; i++) {
        let nextSize = nodeSize(balanceType, children2[i]);
        if (groupSize + nextSize >= maxChild)
          break;
        groupSize += nextSize;
      }
      if (i == groupFrom + 1) {
        if (groupSize > maxChild) {
          let only = children2[groupFrom];
          divide(only.children, only.positions, 0, only.children.length, positions2[groupFrom] + offset);
          continue;
        }
        localChildren.push(children2[groupFrom]);
      } else {
        let length2 = positions2[i - 1] + children2[i - 1].length - groupStart;
        localChildren.push(balanceRange(balanceType, children2, positions2, groupFrom, i, groupStart, length2, null, mkTree));
      }
      localPositions.push(groupStart + offset - start);
    }
  }
  divide(children, positions, from, to, 0);
  return (mkTop || mkTree)(localChildren, localPositions, length);
}
var Parser = class {
  /**
  Start a parse, returning a [partial parse](#common.PartialParse)
  object. [`fragments`](#common.TreeFragment) can be passed in to
  make the parse incremental.
  
  By default, the entire input is parsed. You can pass `ranges`,
  which should be a sorted array of non-empty, non-overlapping
  ranges, to parse only those ranges. The tree returned in that
  case will start at `ranges[0].from`.
  */
  startParse(input, fragments, ranges) {
    if (typeof input == "string")
      input = new StringInput(input);
    ranges = !ranges ? [new Range(0, input.length)] : ranges.length ? ranges.map((r) => new Range(r.from, r.to)) : [new Range(0, 0)];
    return this.createParse(input, fragments || [], ranges);
  }
  /**
  Run a full parse, returning the resulting tree.
  */
  parse(input, fragments, ranges) {
    let parse = this.startParse(input, fragments, ranges);
    for (; ; ) {
      let done = parse.advance();
      if (done)
        return done;
    }
  }
};
var StringInput = class {
  constructor(string2) {
    this.string = string2;
  }
  get length() {
    return this.string.length;
  }
  chunk(from) {
    return this.string.slice(from);
  }
  get lineChunks() {
    return false;
  }
  read(from, to) {
    return this.string.slice(from, to);
  }
};
var stoppedInner = new NodeProp({ perNode: true });

// ../../node_modules/.pnpm/@lezer+lr@1.3.10/node_modules/@lezer/lr/dist/index.js
var Stack = class _Stack {
  /**
  @internal
  */
  constructor(p, stack, state, reducePos, pos, score, buffer, bufferBase, curContext, lookAhead = 0, parent) {
    this.p = p;
    this.stack = stack;
    this.state = state;
    this.reducePos = reducePos;
    this.pos = pos;
    this.score = score;
    this.buffer = buffer;
    this.bufferBase = bufferBase;
    this.curContext = curContext;
    this.lookAhead = lookAhead;
    this.parent = parent;
  }
  /**
  @internal
  */
  toString() {
    return `[${this.stack.filter((_, i) => i % 3 == 0).concat(this.state)}]@${this.pos}${this.score ? "!" + this.score : ""}`;
  }
  // Start an empty stack
  /**
  @internal
  */
  static start(p, state, pos = 0) {
    let cx = p.parser.context;
    return new _Stack(p, [], state, pos, pos, 0, [], 0, cx ? new StackContext(cx, cx.start) : null, 0, null);
  }
  /**
  The stack's current [context](#lr.ContextTracker) value, if
  any. Its type will depend on the context tracker's type
  parameter, or it will be `null` if there is no context
  tracker.
  */
  get context() {
    return this.curContext ? this.curContext.context : null;
  }
  // Push a state onto the stack, tracking its start position as well
  // as the buffer base at that point.
  /**
  @internal
  */
  pushState(state, start) {
    this.stack.push(this.state, start, this.bufferBase + this.buffer.length);
    this.state = state;
  }
  // Apply a reduce action
  /**
  @internal
  */
  reduce(action) {
    var _a;
    let depth = action >> 19, type = action & 65535;
    let { parser: parser2 } = this.p;
    let dPrec = parser2.dynamicPrecedence(type);
    if (dPrec)
      this.score += dPrec;
    if (depth == 0) {
      this.pushState(parser2.getGoto(this.state, type, true), this.reducePos);
      if (type < parser2.minRepeatTerm)
        this.storeNode(type, this.reducePos, this.reducePos, 4, true);
      this.reduceContext(type, this.reducePos);
      return;
    }
    let base = this.stack.length - (depth - 1) * 3 - (action & 262144 ? 6 : 0);
    let start = base ? this.stack[base - 2] : this.p.ranges[0].from, size = this.reducePos - start;
    if (size >= 2e3 && !((_a = this.p.parser.nodeSet.types[type]) === null || _a === void 0 ? void 0 : _a.isAnonymous)) {
      if (start == this.p.lastBigReductionStart) {
        this.p.bigReductionCount++;
        this.p.lastBigReductionSize = size;
      } else if (this.p.lastBigReductionSize < size) {
        this.p.bigReductionCount = 1;
        this.p.lastBigReductionStart = start;
        this.p.lastBigReductionSize = size;
      }
    }
    let bufferBase = base ? this.stack[base - 1] : 0, count = this.bufferBase + this.buffer.length - bufferBase;
    if (type < parser2.minRepeatTerm || action & 131072) {
      let pos = parser2.stateFlag(
        this.state,
        1
        /* StateFlag.Skipped */
      ) ? this.pos : this.reducePos;
      this.storeNode(type, start, pos, count + 4, true);
    }
    if (action & 262144) {
      this.state = this.stack[base];
    } else {
      let baseStateID = this.stack[base - 3];
      this.state = parser2.getGoto(baseStateID, type, true);
    }
    while (this.stack.length > base)
      this.stack.pop();
    this.reduceContext(type, start);
  }
  // Shift a value into the buffer
  /**
  @internal
  */
  storeNode(term, start, end, size = 4, isReduce = false) {
    if (term == 0 && (!this.stack.length || this.stack[this.stack.length - 1] < this.buffer.length + this.bufferBase)) {
      let cur = this, top = this.buffer.length;
      if (top == 0 && cur.parent) {
        top = cur.bufferBase - cur.parent.bufferBase;
        cur = cur.parent;
      }
      if (top > 0 && cur.buffer[top - 4] == 0 && cur.buffer[top - 1] > -1) {
        if (start == end)
          return;
        if (cur.buffer[top - 2] >= start) {
          cur.buffer[top - 2] = end;
          return;
        }
      }
    }
    if (!isReduce || this.pos == end) {
      this.buffer.push(term, start, end, size);
    } else {
      let index = this.buffer.length;
      if (index > 0 && this.buffer[index - 4] != 0)
        while (index > 0 && this.buffer[index - 2] > end) {
          this.buffer[index] = this.buffer[index - 4];
          this.buffer[index + 1] = this.buffer[index - 3];
          this.buffer[index + 2] = this.buffer[index - 2];
          this.buffer[index + 3] = this.buffer[index - 1];
          index -= 4;
          if (size > 4)
            size -= 4;
        }
      this.buffer[index] = term;
      this.buffer[index + 1] = start;
      this.buffer[index + 2] = end;
      this.buffer[index + 3] = size;
    }
  }
  // Apply a shift action
  /**
  @internal
  */
  shift(action, next, nextEnd) {
    let start = this.pos;
    if (action & 131072) {
      this.pushState(action & 65535, this.pos);
    } else if ((action & 262144) == 0) {
      let nextState = action, { parser: parser2 } = this.p;
      if (nextEnd > this.pos || next <= parser2.maxNode) {
        this.pos = nextEnd;
        if (!parser2.stateFlag(
          nextState,
          1
          /* StateFlag.Skipped */
        ))
          this.reducePos = nextEnd;
      }
      this.pushState(nextState, start);
      this.shiftContext(next, start);
      if (next <= parser2.maxNode)
        this.buffer.push(next, start, nextEnd, 4);
    } else {
      this.pos = nextEnd;
      this.shiftContext(next, start);
      if (next <= this.p.parser.maxNode)
        this.buffer.push(next, start, nextEnd, 4);
    }
  }
  // Apply an action
  /**
  @internal
  */
  apply(action, next, nextEnd) {
    if (action & 65536)
      this.reduce(action);
    else
      this.shift(action, next, nextEnd);
  }
  // Add a prebuilt (reused) node into the buffer.
  /**
  @internal
  */
  useNode(value, next) {
    let index = this.p.reused.length - 1;
    if (index < 0 || this.p.reused[index] != value) {
      this.p.reused.push(value);
      index++;
    }
    let start = this.pos;
    this.reducePos = this.pos = start + value.length;
    this.pushState(next, start);
    this.buffer.push(
      index,
      start,
      this.reducePos,
      -1
      /* size == -1 means this is a reused value */
    );
    if (this.curContext)
      this.updateContext(this.curContext.tracker.reuse(this.curContext.cont