pkg testing, func Init()
pkg testing, method (*B) ReportMetric(float64, string)
pkg testing, type BenchmarkResult struct, Extra map[string]float64
-pkg text/scanner, const AllowDigitSeparators = 1024
-pkg text/scanner, const AllowDigitSeparators ideal-int
-pkg text/scanner, const GoTokens = 2036
pkg text/template, method (ExecError) Unwrap() error
pkg time, method (Duration) Microseconds() int64
pkg time, method (Duration) Milliseconds() int64
// For instance, if the mode is ScanIdents (not ScanStrings), the string
// "foo" is scanned as the token sequence '"' Ident '"'.
//
+// Use GoTokens to configure the Scanner such that it accepts all Go
+// literal tokens including Go identifiers. Comments will be skipped.
+//
const (
- ScanIdents = 1 << -Ident
- ScanInts = 1 << -Int
- 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
- AllowDigitSeparators = 1 << -allowDigitSeparators // if set, number literals may contain underscores as digit separators
- GoTokens = ScanIdents | ScanFloats | ScanChars | ScanStrings | ScanRawStrings | ScanComments | SkipComments | AllowDigitSeparators
+ ScanIdents = 1 << -Ident
+ ScanInts = 1 << -Int
+ 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
)
// The result of Scan is one of these tokens or a Unicode character.
// internal use only
skipComment
- allowDigitSeparators
)
var tokenString = map[rune]string{
func isDecimal(ch rune) bool { return '0' <= ch && ch <= '9' }
func isHex(ch rune) bool { return '0' <= ch && ch <= '9' || 'a' <= lower(ch) && lower(ch) <= 'f' }
-// digits accepts the sequence { digit } (if AllowDigitSeparators is not set)
-// or { digit | '_' } (if AllowDigitSeparators is set), starting with ch0.
+// digits accepts the sequence { digit | '_' } starting with ch0.
// If base <= 10, digits accepts any decimal digit but records
// the first invalid digit >= base in *invalid if *invalid == 0.
// digits returns the first rune that is not part of the sequence
ch = ch0
if base <= 10 {
max := rune('0' + base)
- for isDecimal(ch) || ch == '_' && s.Mode&AllowDigitSeparators != 0 {
+ for isDecimal(ch) || ch == '_' {
ds := 1
if ch == '_' {
ds = 2
ch = s.next()
}
} else {
- for isHex(ch) || ch == '_' && s.Mode&AllowDigitSeparators != 0 {
+ for isHex(ch) || ch == '_' {
ds := 1
if ch == '_' {
ds = 2
{"foo01.bar31.xx-0-1-1-0", "01 31 0 1 1 0", ScanInts},
{"foo0/12/0/5.67", "0 12 0 5 67", ScanInts},
{"xxx1e0yyy", "1 0", ScanInts},
- {"1_2", "1 2", ScanInts}, // don't consume _ as part of a number if not explicitly enabled
- {"1_2", "1_2", ScanInts | AllowDigitSeparators},
+ {"1_2", "1_2", ScanInts},
{"xxx1.0yyy2e3ee", "1 0 2 3", ScanInts},
{"xxx1.0yyy2e3ee", "1.0 2e3", ScanFloats},
} {