diff options
Diffstat (limited to 'compiler/lexer.go')
| -rw-r--r-- | compiler/lexer.go | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/compiler/lexer.go b/compiler/lexer.go index 91cd209..acc9658 100644 --- a/compiler/lexer.go +++ b/compiler/lexer.go @@ -19,6 +19,7 @@ const ( tokenKindGroupClose = tokenKind(")") tokenKindBExpOpen = tokenKind("[") tokenKindBExpClose = tokenKind("]") + tokenKindCharRange = tokenKind("-") tokenKindEOF = tokenKind("eof") ) @@ -124,6 +125,8 @@ func (l *lexer) nextInDefault(c rune) (*token, error) { func (l *lexer) nextInBExp(c rune) (*token, error) { switch c { + case '-': + return newToken(tokenKindCharRange, nullChar), nil case ']': l.mode = lexerModeDefault return newToken(tokenKindBExpClose, nullChar), nil @@ -138,7 +141,7 @@ func (l *lexer) nextInBExp(c rune) (*token, error) { } } switch { - case c == '\\' || c == ']': + case c == '\\' || c == '-' || c == ']': return newToken(tokenKindChar, c), nil default: return nil, &SyntaxError{ |