function to parse isolated label

New API function parse_label() parses a label, separate from statements.
If a label has not already been lexed and queued up, it does not use
yylex(), but parses the label itself at the character level, to avoid
unwanted lexing past an absent optional label.

1 files changed, 3 insertions, 0 deletions

diff --git a/parser.h b/parser.h
index f4054d5a13..e2769a7cca 100644
--- a/parser.h
+++ b/parser.h
@@ -112,6 +112,9 @@ typedef struct yy_parser {
 #define LEX_STUFF_UTF8		0x00000001
 #define LEX_KEEP_PREVIOUS	0x00000002
 
+/* flags for parser API */
+#define PARSE_OPTIONAL          0x00000001
+
 /*
  * Local variables:
  * c-indentation-style: bsd