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parsers.go
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parsers.go
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package v2
import parsec "github.com/bricef/goparsec/v2"
// Parser function parses input text encapsulated by Scanner, higher
// order parsers are constructed using combinators.
type Parser func(Scanner) (Node, Scanner)
type Regex string
type Identifier string
type ShortCircuitCallback func(Node, parsec.Scanner) Node
// ParseNothing is a parser that will reject all input as invalid.
// It will not create a node for any input and return the scanner unchanged.
func ParseNothing(s Scanner) (Node, Scanner) {
return nil, s
}
func And(name Identifier, parsers ...interface{}) Parser {
return nil
}
func Or(name Identifier, parsers ...interface{}) Parser {
return nil
}
func Kleen(name Identifier, parser interface{}) Parser {
return nil
}
func Many(name Identifier, parser interface{}) Parser {
return nil
}
func ManyUntil(name Identifier, itemParser interface{}, stopParser interface{}) Parser {
return nil
}
func Maybe(name Identifier, parser interface{}) Parser {
return nil
}
func ShortCircuit(parser Parser, callback ShortCircuitCallback) Parser {
return nil
}
func Char(name Identifier) Parser {
return nil
}
func float(name Identifier) Parser {
return nil
}
func Hex(name Identifier) Parser {
return nil
}
func Int(name Identifier) Parser {
return nil
}
func Oct(name Identifier) Parser {
return nil
}
func String(name Identifier) Parser {
return nil
}
func Ident(name Identifier) Parser {
return nil
}
func Atom(name Identifier, atom string) Parser {
return nil
}
func AtomExact(name Identifier, atom string) Parser {
return nil
}
func Token(name string, pattern Regex) Parser {
if len(pattern) == 0 {
return ParseNothing
}
if pattern[0] != '^' {
pattern = "^" + pattern
}
return func(s Scanner) (Node, Scanner) {
if s.Endof() {
return nil, s
}
news := s.Clone()
news.SkipWS()
cursor := news.GetCursor()
if tok, _ := news.Match(string(pattern)); tok != nil {
return NewTerminal(name, string(tok), Source{"", 0, 0, cursor}), news
}
return nil, s
}
}
func TokenExact(name Identifier, r Regex) Parser {
return nil
}
func OrToken(name Identifier, r Regex) Parser {
return nil
}
func End() Parser {
return nil
}
func NotEnd() Parser {
return nil
}