All files parameter_type_matcher.js

100% Statements 24/24
100% Branches 10/10
100% Functions 7/7
100% Lines 22/22

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class ParameterTypeMatcher {
  constructor(parameter, regexp, text, matchPosition) {
    this._parameterType = parameter
    this._treeRegexp = regexp
    this._text = text
    this._matchPosition = matchPosition || 0
 
    const captureGroupRegexp = new RegExp(`(${regexp})`)
    this._match = captureGroupRegexp.exec(text.slice(this._matchPosition))
  }
 
  get parameterType() {
    return this._parameterType
  }
 
  advanceTo(newMatchPosition) {
    for (
      let advancedPos = newMatchPosition;
      advancedPos < this._text.length;
      advancedPos++
    ) {
      let matcher = new ParameterTypeMatcher(
        this._parameterType,
        this._treeRegexp,
        this._text,
        advancedPos
      )
 
      if (matcher.find) {
        return matcher
      }
    }
 
    return new ParameterTypeMatcher(
      this._parameterType,
      this._treeRegexp,
      this._text,
      this._text.length
    )
  }
 
  get find() {
    return this._match && this.group !== ''
  }
 
  get start() {
    return this._matchPosition + this._match.index
  }
 
  get group() {
    return this._match[0]
  }
 
  static compare(a, b) {
    const posComparison = a.start - b.start
    if (posComparison !== 0) return posComparison
    const lengthComparison = b.group.length - a.group.length
    if (lengthComparison !== 0) return lengthComparison
    return 0
  }
}
 
module.exports = ParameterTypeMatcher