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lezer-based XML grammar
There is a newer version: 1.0.5
'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

var lr = require('@lezer/lr');
var highlight = require('@lezer/highlight');

// This file was generated by lezer-generator. You probably shouldn't edit it.
const StartTag = 1,
  StartCloseTag = 2,
  MissingCloseTag = 3,
  mismatchedStartCloseTag = 4,
  incompleteStartCloseTag = 5,
  commentContent$1 = 35,
  piContent$1 = 36,
  cdataContent$1 = 37,
  Element = 11,
  OpenTag = 13;

/* Hand-written tokenizer for XML tag matching. */

function nameChar(ch) {
  return ch == 45 || ch == 46 || ch == 58 || ch >= 65 && ch <= 90 || ch == 95 || ch >= 97 && ch <= 122 || ch >= 161
}

function isSpace(ch) {
  return ch == 9 || ch == 10 || ch == 13 || ch == 32
}

let cachedName = null, cachedInput = null, cachedPos = 0;
function tagNameAfter(input, offset) {
  let pos = input.pos + offset;
  if (cachedInput == input && cachedPos == pos) return cachedName
  while (isSpace(input.peek(offset))) offset++;
  let name = "";
  for (;;) {
    let next = input.peek(offset);
    if (!nameChar(next)) break
    name += String.fromCharCode(next);
    offset++;
  }
  cachedInput = input; cachedPos = pos;
  return cachedName = name || null
}

function ElementContext(name, parent) {
  this.name = name;
  this.parent = parent;
  this.hash = parent ? parent.hash : 0;
  for (let i = 0; i < name.length; i++) this.hash += (this.hash << 4) + name.charCodeAt(i) + (name.charCodeAt(i) << 8);
}

const elementContext = new lr.ContextTracker({
  start: null,
  shift(context, term, stack, input) {
    return term == StartTag ? new ElementContext(tagNameAfter(input, 1) || "", context) : context
  },
  reduce(context, term) {
    return term == Element && context ? context.parent : context
  },
  reuse(context, node, _stack, input) {
    let type = node.type.id;
    return type == StartTag || type == OpenTag
      ? new ElementContext(tagNameAfter(input, 1) || "", context) : context
  },
  hash(context) { return context ? context.hash : 0 },
  strict: false
});

const startTag = new lr.ExternalTokenizer((input, stack) => {
  if (input.next != 60 /* '<' */) return
  input.advance();
  if (input.next == 47 /* '/' */) {
    input.advance();
    let name = tagNameAfter(input, 0);
    if (!name) return input.acceptToken(incompleteStartCloseTag)
    if (stack.context && name == stack.context.name) return input.acceptToken(StartCloseTag)
    for (let cx = stack.context; cx; cx = cx.parent) if (cx.name == name) return input.acceptToken(MissingCloseTag, -2)
    input.acceptToken(mismatchedStartCloseTag);
  } else if (input.next != 33 /* '!' */ && input.next != 63 /* '?' */) {
    return input.acceptToken(StartTag)
  }
}, {contextual: true});

function scanTo(type, end) {
  return new lr.ExternalTokenizer(input => {
    for (let endPos = 0, len = 0;; len++) {
      if (input.next < 0) {
        if (len) input.acceptToken(type);
        break
      } 
      if (input.next == end.charCodeAt(endPos)) {
        endPos++;
        if (endPos == end.length) {
          if (len >= end.length) input.acceptToken(type, 1 - end.length);
          break
        }
      } else {
        endPos = input.next == end.charCodeAt(0) ? 1 : 0;
      }
      input.advance();
    }
  })
}

const commentContent = scanTo(commentContent$1, "-->");
const piContent = scanTo(piContent$1, "?>");
const cdataContent = scanTo(cdataContent$1, "]]>");

const xmlHighlighting = highlight.styleTags({
  Text: highlight.tags.content,
  "StartTag StartCloseTag EndTag SelfCloseEndTag": highlight.tags.angleBracket,
  TagName: highlight.tags.tagName,
  "MismatchedCloseTag/Tagname": [highlight.tags.tagName, highlight.tags.invalid],
  AttributeName: highlight.tags.attributeName,
  AttributeValue: highlight.tags.attributeValue,
  Is: highlight.tags.definitionOperator,
  "EntityReference CharacterReference": highlight.tags.character,
  Comment: highlight.tags.blockComment,
  ProcessingInst: highlight.tags.processingInstruction,
  DoctypeDecl: highlight.tags.documentMeta,
  Cdata: highlight.tags.special(highlight.tags.string)
});

// This file was generated by lezer-generator. You probably shouldn't edit it.
const parser = lr.LRParser.deserialize({
  version: 14,
  states: ",SOQOaOOOrOxO'#CfOzOpO'#CiO!tOaO'#CgOOOP'#Cg'#CgO!{OrO'#CrO#TOtO'#CsO#]OpO'#CtOOOP'#DS'#DSOOOP'#Cv'#CvQQOaOOOOOW'#Cw'#CwO#eOxO,59QOOOP,59Q,59QOOOO'#Cx'#CxO#mOpO,59TO#uO!bO,59TOOOP'#C{'#C{O$TOaO,59RO$[OpO'#CoOOOP,59R,59ROOOQ'#C|'#C|O$dOrO,59^OOOP,59^,59^OOOS'#C}'#C}O$lOtO,59_OOOP,59_,59_O$tOpO,59`O$|OpO,59`OOOP-E6t-E6tOOOW-E6u-E6uOOOP1G.l1G.lOOOO-E6v-E6vO%UO!bO1G.oO%UO!bO1G.oO%dOpO'#CkO%lO!bO'#CyO%zO!bO1G.oOOOP1G.o1G.oOOOP1G.w1G.wOOOP-E6y-E6yOOOP1G.m1G.mO&VOpO,59ZO&_OpO,59ZOOOQ-E6z-E6zOOOP1G.x1G.xOOOS-E6{-E6{OOOP1G.y1G.yO&gOpO1G.zO&gOpO1G.zOOOP1G.z1G.zO&oO!bO7+$ZO&}O!bO7+$ZOOOP7+$Z7+$ZOOOP7+$c7+$cO'YOpO,59VO'bOpO,59VO'jO!bO,59eOOOO-E6w-E6wO'xOpO1G.uO'xOpO1G.uOOOP1G.u1G.uO(QOpO7+$fOOOP7+$f7+$fO(YO!bO<`#X;'S%y;'S;=`&_<%lO%yX>eV{WOr%ysv%yw#T%y#T#U>z#U;'S%y;'S;=`&_<%lO%yX?PV{WOr%ysv%yw#h%y#h#i?f#i;'S%y;'S;=`&_<%lO%yX?kV{WOr%ysv%yw#T%y#T#U