diff options
Diffstat (limited to 'vendor/github.com/rivo/uniseg/grapheme.go')
| -rw-r--r-- | vendor/github.com/rivo/uniseg/grapheme.go | 27 |
1 files changed, 12 insertions, 15 deletions
diff --git a/vendor/github.com/rivo/uniseg/grapheme.go b/vendor/github.com/rivo/uniseg/grapheme.go index a0bcc554b..b12403d43 100644 --- a/vendor/github.com/rivo/uniseg/grapheme.go +++ b/vendor/github.com/rivo/uniseg/grapheme.go @@ -13,9 +13,10 @@ import "unicode/utf8" // well as boundary information and character width is available via the various // methods (see examples below). // -// Using this class to iterate over a string is convenient but it is much slower -// than using this package's [Step] or [StepString] functions or any of the -// other specialized functions starting with "First". +// This class basically wraps the [StepString] parser and provides a convenient +// interface to it. If you are only interested in some parts of this package's +// functionality, using the specialized functions starting with "First" is +// almost always faster. type Graphemes struct { // The original string. original string @@ -252,16 +253,14 @@ func FirstGraphemeCluster(b []byte, state int) (cluster, rest []byte, width, new return b[:length], b[length:], width, state | (prop << shiftGraphemePropState) } - if r == vs16 { - width = 2 - } else if firstProp != prExtendedPictographic && firstProp != prRegionalIndicator && firstProp != prL { - width += runeWidth(r, prop) - } else if firstProp == prExtendedPictographic { + if firstProp == prExtendedPictographic { if r == vs15 { width = 1 - } else { + } else if r == vs16 { width = 2 } + } else if firstProp != prRegionalIndicator && firstProp != prL { + width += runeWidth(r, prop) } length += l @@ -314,16 +313,14 @@ func FirstGraphemeClusterInString(str string, state int) (cluster, rest string, return str[:length], str[length:], width, state | (prop << shiftGraphemePropState) } - if r == vs16 { - width = 2 - } else if firstProp != prExtendedPictographic && firstProp != prRegionalIndicator && firstProp != prL { - width += runeWidth(r, prop) - } else if firstProp == prExtendedPictographic { + if firstProp == prExtendedPictographic { if r == vs15 { width = 1 - } else { + } else if r == vs16 { width = 2 } + } else if firstProp != prRegionalIndicator && firstProp != prL { + width += runeWidth(r, prop) } length += l |