$tokens = $null
$errors = $null
[System.Management.Automation.Language.Parser]::ParseFile('d:\TZ\dianshang-qianduan\convert-theme.ps1', [ref]$tokens, [ref]$errors) | Out-Null
foreach ($e in $errors) {
  Write-Host ("Line " + $e.Extent.StartLineNumber + ": " + $e.Message)
}
Write-Host "done"