1 files changed, 16 insertions, 2 deletions
diff --git a/include/ptn.c b/include/ptn.c
index 66b4ad8..3d9c0a5 100644
--- a/include/ptn.c
+++ b/include/ptn.c
@@ -3,7 +3,21 @@
 #define ASSERT_NONEMPTY { if (ptn == 0 || *ptn == 0) return PTN_INVALID; }
 #define ASSERT_MORE     { if (*ptn == 0) return PTN_INVALID; }
 
-enum PTN_PARSE_RESULT
+uint8_t
+likely_move(char *ptn) {
+  if (ptn == 0) return 0;
+  for (;;ptn++) {
+    switch (*ptn) {
+      case '+':
+      case '-':
+      case '>':
+      case '<': return 1;
+      case 0:   return 0;
+    }
+  }
+}
+
+enum E_RESULT
 parse_place(const uint8_t board_size, char *ptn,
             uint8_t *out_location, enum STONE_VARIANT *out_stone) {
 
@@ -33,7 +47,7 @@ parse_place(const uint8_t board_size, char *ptn,
   return PTN_VALID;
 }
 
-enum PTN_PARSE_RESULT
+enum E_RESULT
 parse_move(const uint8_t board_size, char *ptn,
            uint8_t *out_location, enum MOVE_DIRECTION *out_direction,
            uint8_t *out_steps, uint8_t out_drops[5]) {