Prepare for error guards

1 files changed, 7 insertions, 0 deletions

diff --git a/lexer.c b/lexer.c
index 0024320..4e9a4e4 100644
--- a/lexer.c
+++ b/lexer.c
@@ -88,11 +88,18 @@ lexline(InputStream *input, int toplevel)
 		}else if(!toplevel && peek == ':'){
 			Rune buf[MAX_LINE_LENGTH];
 			Rune *p = buf;
+			int errorguard = 0;
+			if(getrune(input) == ':')
+				errorguard = 1;
+			else
+				ungetrune(input);
+
 			while((peek = getrune(input)) != L'⋄' && peek != '\n' && !inputEOF(input))
 				*p++ = peek;
 			*p = 0;
 			ungetrune(input);
 			stmt->guard = lexlinestr(buf, toplevel);
+			stmt->errorguard = errorguard;
 			stmt->ntoks--;
 		}else if(peek == '{'){
 			int unclosed = 1;