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separated.go
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separated.go
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package multi
import (
"github.com/roblovelock/gobble/pkg/parser"
)
func Separated0[R parser.Reader, T any, S any](
p parser.Parser[R, T], separator parser.Parser[R, S],
) parser.Parser[R, []T] {
return func(in R) ([]T, error) {
result := make([]T, 0)
for r, err := p(in); err == nil; r, err = p(in) {
result = append(result, r)
if _, err := separator(in); err != nil {
break
}
}
return result, nil
}
}
func Separated0Count[R parser.Reader, T any, S any](
p parser.Parser[R, T], separator parser.Parser[R, S],
) parser.Parser[R, uint] {
return func(in R) (uint, error) {
var count uint = 0
for _, err := p(in); err == nil; _, err = p(in) {
count++
if _, err := separator(in); err != nil {
break
}
}
return count, nil
}
}
func Separated1[R parser.Reader, T any, S any](
p parser.Parser[R, T], separator parser.Parser[R, S],
) parser.Parser[R, []T] {
return func(in R) ([]T, error) {
r, err := p(in)
if err != nil {
return nil, err
}
result := []T{r}
for r, err := p(in); err == nil; r, err = p(in) {
result = append(result, r)
if _, err := separator(in); err != nil {
break
}
}
return result, nil
}
}
func Separated1Count[R parser.Reader, T any, S any](
p parser.Parser[R, T], separator parser.Parser[R, S],
) parser.Parser[R, uint] {
return func(in R) (uint, error) {
if _, err := p(in); err != nil {
return 0, err
}
var count uint = 1
for _, err := p(in); err == nil; _, err = p(in) {
count++
if _, err := separator(in); err != nil {
break
}
}
return count, nil
}
}