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regexp.go
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regexp.go
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package regexp
import (
"io"
"regexp"
"sync"
)
// Regexp is a wrapper struct used for wrapping MustCompile regex expressions
// used as global variables. Using this structure helps speed the startup time
// of apps that want to use global regex variables. This library initializes them on
// first use as opposed to the start of the executable.
type Regexp struct {
*regexpStruct
}
type regexpStruct struct {
_ noCopy
once sync.Once
regexp *regexp.Regexp
val string
}
func Delayed(val string) Regexp {
re := ®expStruct{
val: val,
}
if precompile {
re.regexp = regexp.MustCompile(re.val)
}
return Regexp{re}
}
func (re *regexpStruct) compile() {
if precompile {
return
}
re.once.Do(func() {
re.regexp = regexp.MustCompile(re.val)
})
}
func (re *regexpStruct) Expand(dst []byte, template []byte, src []byte, match []int) []byte {
re.compile()
return re.regexp.Expand(dst, template, src, match)
}
func (re *regexpStruct) ExpandString(dst []byte, template string, src string, match []int) []byte {
re.compile()
return re.regexp.ExpandString(dst, template, src, match)
}
func (re *regexpStruct) Find(b []byte) []byte {
re.compile()
return re.regexp.Find(b)
}
func (re *regexpStruct) FindAll(b []byte, n int) [][]byte {
re.compile()
return re.regexp.FindAll(b, n)
}
func (re *regexpStruct) FindAllIndex(b []byte, n int) [][]int {
re.compile()
return re.regexp.FindAllIndex(b, n)
}
func (re *regexpStruct) FindAllString(s string, n int) []string {
re.compile()
return re.regexp.FindAllString(s, n)
}
func (re *regexpStruct) FindAllStringIndex(s string, n int) [][]int {
re.compile()
return re.regexp.FindAllStringIndex(s, n)
}
func (re *regexpStruct) FindAllStringSubmatch(s string, n int) [][]string {
re.compile()
return re.regexp.FindAllStringSubmatch(s, n)
}
func (re *regexpStruct) FindAllStringSubmatchIndex(s string, n int) [][]int {
re.compile()
return re.regexp.FindAllStringSubmatchIndex(s, n)
}
func (re *regexpStruct) FindAllSubmatch(b []byte, n int) [][][]byte {
re.compile()
return re.regexp.FindAllSubmatch(b, n)
}
func (re *regexpStruct) FindAllSubmatchIndex(b []byte, n int) [][]int {
re.compile()
return re.regexp.FindAllSubmatchIndex(b, n)
}
func (re *regexpStruct) FindIndex(b []byte) (loc []int) {
re.compile()
return re.regexp.FindIndex(b)
}
func (re *regexpStruct) FindReaderIndex(r io.RuneReader) (loc []int) {
re.compile()
return re.regexp.FindReaderIndex(r)
}
func (re *regexpStruct) FindReaderSubmatchIndex(r io.RuneReader) []int {
re.compile()
return re.regexp.FindReaderSubmatchIndex(r)
}
func (re *regexpStruct) FindString(s string) string {
re.compile()
return re.regexp.FindString(s)
}
func (re *regexpStruct) FindStringIndex(s string) (loc []int) {
re.compile()
return re.regexp.FindStringIndex(s)
}
func (re *regexpStruct) FindStringSubmatch(s string) []string {
re.compile()
return re.regexp.FindStringSubmatch(s)
}
func (re *regexpStruct) FindStringSubmatchIndex(s string) []int {
re.compile()
return re.regexp.FindStringSubmatchIndex(s)
}
func (re *regexpStruct) FindSubmatch(b []byte) [][]byte {
re.compile()
return re.regexp.FindSubmatch(b)
}
func (re *regexpStruct) FindSubmatchIndex(b []byte) []int {
re.compile()
return re.regexp.FindSubmatchIndex(b)
}
func (re *regexpStruct) LiteralPrefix() (prefix string, complete bool) {
re.compile()
return re.regexp.LiteralPrefix()
}
func (re *regexpStruct) Longest() {
re.compile()
re.regexp.Longest()
}
func (re *regexpStruct) Match(b []byte) bool {
re.compile()
return re.regexp.Match(b)
}
func (re *regexpStruct) MatchReader(r io.RuneReader) bool {
re.compile()
return re.regexp.MatchReader(r)
}
func (re *regexpStruct) MatchString(s string) bool {
re.compile()
return re.regexp.MatchString(s)
}
func (re *regexpStruct) NumSubexp() int {
re.compile()
return re.regexp.NumSubexp()
}
func (re *regexpStruct) ReplaceAll(src, repl []byte) []byte {
re.compile()
return re.regexp.ReplaceAll(src, repl)
}
func (re *regexpStruct) ReplaceAllFunc(src []byte, repl func([]byte) []byte) []byte {
re.compile()
return re.regexp.ReplaceAllFunc(src, repl)
}
func (re *regexpStruct) ReplaceAllLiteral(src, repl []byte) []byte {
re.compile()
return re.regexp.ReplaceAllLiteral(src, repl)
}
func (re *regexpStruct) ReplaceAllLiteralString(src, repl string) string {
re.compile()
return re.regexp.ReplaceAllLiteralString(src, repl)
}
func (re *regexpStruct) ReplaceAllString(src, repl string) string {
re.compile()
return re.regexp.ReplaceAllString(src, repl)
}
func (re *regexpStruct) ReplaceAllStringFunc(src string, repl func(string) string) string {
re.compile()
return re.regexp.ReplaceAllStringFunc(src, repl)
}
func (re *regexpStruct) Split(s string, n int) []string {
re.compile()
return re.regexp.Split(s, n)
}
func (re *regexpStruct) String() string {
re.compile()
return re.regexp.String()
}
func (re *regexpStruct) SubexpIndex(name string) int {
re.compile()
return re.regexp.SubexpIndex(name)
}
func (re *regexpStruct) SubexpNames() []string {
re.compile()
return re.regexp.SubexpNames()
}
// noCopy may be added to structs which must not be copied
// after the first use.
//
// See https://golang.org/issues/8005#issuecomment-190753527
// for details.
//
// Note that it must not be embedded, due to the Lock and Unlock methods.
type noCopy struct{}
// Lock is a no-op used by -copylocks checker from `go vet`.
func (*noCopy) Lock() {}
func (*noCopy) Unlock() {}