* lexer.c (lex_match_id_n): New function.

[pspp-builds.git] / src / language / lexer / lexer.c

diff --git a/src/language/lexer/lexer.c b/src/language/lexer/lexer.c
index ac0af60005edc2e97f3c7c491309ceca51af8a10..d161287685beca3bd1956a025764152644805000 100644 (file)
--- a/src/language/lexer/lexer.c
+++ b/src/language/lexer/lexer.c
@@ -548,9 +548,19 @@ lex_match (struct lexer *lexer, int t)
    Otherwise, returns false. */
 bool
 lex_match_id (struct lexer *lexer, const char *s)
+{
+  return lex_match_id_n (lexer, s, 3);
+}
+
+/* If the current token is the identifier S, skips it and returns
+   true.  The identifier may be abbreviated to its first N
+   letters.
+   Otherwise, returns false. */
+bool
+lex_match_id_n (struct lexer *lexer, const char *s, size_t n)
 {
   if (lexer->token == T_ID
-      && lex_id_match (ss_cstr (s), ss_cstr (lexer->tokid)))
+      && lex_id_match_n (ss_cstr (s), ss_cstr (lexer->tokid), n))
     {
       lex_get (lexer);
       return true;