function getAttributeDetails()

in src/language/providers/attributeValueCompletion.ts [138:205]

• 62 lines of code
• 18 McCabe index (conditional complexity)

function getAttributeDetails(
  document: vscode.TextDocument,
  position: vscode.Position
): [attributeName: string, valueStartPos: number, valueEndPos: number] {
  const quoteChar: string[] = ["'", '"']
  const triggerLine = position.line
  const triggerPos = position.character
  let currentLine = triggerLine
  let currentPos = triggerPos
  let endPos = -1
  let currentText = document.lineAt(currentLine).text
  let textBeforeTrigger = currentText.substring(0, triggerPos)
  let attributeName = 'none'
  let attributeStartPos = 0

  while (
    !currentText.includes("'") &&
    !currentText.includes('"') &&
    !currentText.includes('=') &&
    !currentText.includes('<') &&
    !currentText.includes('>') &&
    currentLine > 0 &&
    currentLine < document.lineCount
  ) {
    currentText = document.lineAt(--currentLine).text
  }

  if (currentLine === 0 || currentLine === document.lineCount) {
    return ['none', 0, 0]
  }

  if ((currentPos = textBeforeTrigger.lastIndexOf('=')) !== -1) {
    if (triggerPos === currentPos + 1) {
      attributeStartPos = textBeforeTrigger.lastIndexOf(' ') + 1
      attributeName = textBeforeTrigger.substring(attributeStartPos, currentPos)
      return [attributeName, currentPos + 1, currentPos + 1]
    }
  }

  for (let i = 0; i < quoteChar.length; ++i) {
    if (currentText.includes(quoteChar[i])) {
      if (currentLine === triggerLine) {
        currentPos = textBeforeTrigger.lastIndexOf(quoteChar[i])

        if (
          currentPos < triggerPos &&
          textBeforeTrigger.lastIndexOf('=') === currentPos - 1
        ) {
          textBeforeTrigger = textBeforeTrigger.substring(
            0,
            textBeforeTrigger.lastIndexOf('=')
          )
          endPos = currentText.indexOf(quoteChar[i], currentPos + 1)
          attributeStartPos = textBeforeTrigger.lastIndexOf(' ')
          attributeName = textBeforeTrigger.substring(
            attributeStartPos + 1,
            currentPos - 1
          )
        }
      }
    }

    if (attributeName !== 'none') {
      break
    }
  }
  return [attributeName, currentPos, endPos]
}