ScanFloats     = 1 << -Float // includes Ints and hexadecimal floats
	ScanChars      = 1 << -Char
	ScanStrings    = 1 << -String
	ScanRawStrings = 1 << -RawString
	ScanComments   = 1 << -Comment
	SkipComments   = 1 << -skipComment // if set with ScanComments, comments become white space
	GoTokens       = ScanIdents | ScanFloats | ScanChars | ScanStrings | ScanRawStrings | ScanComments | SkipComments
)

	p.scanner.Init(src)
	p.scanner.Error = func(_ *scanner.Scanner, msg string) { p.error(msg) }
	p.scanner.Mode = scanner.ScanIdents | scanner.ScanInts | scanner.ScanFloats | scanner.ScanStrings
	p.scanner.Whitespace = 1<<'\t' | 1<<' '
	p.scanner.Filename = filename // for good error messages
	p.next()
}

type importError struct {
	pos scanner.Position
	err error
}

		{"ScanChars", Const, 0},
		{"ScanComments", Const, 0},
		{"ScanFloats", Const, 0},
		{"ScanIdents", Const, 0},
		{"ScanInts", Const, 0},
		{"ScanRawStrings", Const, 0},
		{"ScanStrings", Const, 0},
		{"Scanner", Type, 0},
		{"Scanner.Error", Field, 0},
		{"Scanner.ErrorCount", Field, 0},
		{"Scanner.IsIdentRune", Field, 4},
		{"Scanner.Mode", Field, 0},