Incs/codemirror/addon/runmode/runmode.node.js

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// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

/* Just enough of CodeMirror to run runMode under node.js */

function splitLines(string){return string.split(/\r\n?|\n/);};

// Counts the column offset in a string, taking tabs into account.
// Used mostly to find indentation.
var countColumn = exports.countColumn = function(string, end, tabSize, startIndex, startValue) {
  if (end == null) {
    end = string.search(/[^\s\u00a0]/);
    if (end == -1) end = string.length;
  }
  for (var i = startIndex || 0, n = startValue || 0;;) {
    var nextTab = string.indexOf("\t", i);
    if (nextTab < 0 || nextTab >= end)
      return n + (end - i);
    n += nextTab - i;
    n += tabSize - (n % tabSize);
    i = nextTab + 1;
  }
};

function StringStream(string, tabSize, context) {
  this.pos = this.start = 0;
  this.string = string;
  this.tabSize = tabSize || 8;
  this.lastColumnPos = this.lastColumnValue = 0;
  this.lineStart = 0;
  this.context = context
};

StringStream.prototype = {
  eol: function() {return this.pos >= this.string.length;},
  sol: function() {return this.pos == this.lineStart;},
  peek: function() {return this.string.charAt(this.pos) || undefined;},
  next: function() {
    if (this.pos < this.string.length)
      return this.string.charAt(this.pos++);
  },
  eat: function(match) {
    var ch = this.string.charAt(this.pos);
    if (typeof match == "string") var ok = ch == match;
    else var ok = ch && (match.test ? match.test(ch) : match(ch));
    if (ok) {++this.pos; return ch;}
  },
  eatWhile: function(match) {
    var start = this.pos;
    while (this.eat(match)){}
    return this.pos > start;
  },
  eatSpace: function() {
    var start = this.pos;
    while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos;
    return this.pos > start;
  },
  skipToEnd: function() {this.pos = this.string.length;},
  skipTo: function(ch) {
    var found = this.string.indexOf(ch, this.pos);