ginger/parse/parse.go
2014-10-06 20:55:15 -04:00

42 lines
846 B
Go

package parse
import (
"bufio"
"io"
"strconv"
"github.com/mediocregopher/ginger/types"
)
//func ReadElem(r io.Reader) (types.Elem, error) {
// buf := bufio.NewReader(r)
// var err error
// for {
// }
//}
// ReadString reads in a string from the given reader. It assumes the first
// double-quote has already been read off. Ginger strings are wrapped with " and
// are allowed to have newlines literal in them. In all other respects they are
// the same as go strings.
func ReadString(r io.Reader) (types.Str, error) {
buf := bufio.NewReader(r)
str := types.Str("\"")
for {
piece, err := buf.ReadBytes('"')
if err != nil {
return "", err
}
str += types.Str(piece)
if piece[len(piece)-2] != '\\' {
break
}
}
ret, err := strconv.Unquote(string(str))
if err != nil {
return "", err
}
return types.Str(ret), nil
}