Convert parse errors to exceptions.

Parser no longer prints an error, but instead returns an exception ID
and message.

1 files changed, 8 insertions, 2 deletions

diff --git a/unix/main.c b/unix/main.c
index 15a4000ab5..d74247e59b 100644
--- a/unix/main.c
+++ b/unix/main.c
@@ -37,14 +37,20 @@ static void execute_from_lexer(mp_lexer_t *lex, mp_parse_input_kind_t input_kind
         return;
     }
 
-    mp_parse_node_t pn = mp_parse(lex, input_kind);
-    mp_lexer_free(lex);
+    qstr parse_exc_id;
+    const char *parse_exc_msg;
+    mp_parse_node_t pn = mp_parse(lex, input_kind, &parse_exc_id, &parse_exc_msg);
 
     if (pn == MP_PARSE_NODE_NULL) {
         // parse error
+        mp_lexer_show_error_pythonic_prefix(lex);
+        printf("%s: %s\n", qstr_str(parse_exc_id), parse_exc_msg);
+        mp_lexer_free(lex);
         return;
     }
 
+    mp_lexer_free(lex);
+
     //printf("----------------\n");
     //parse_node_show(pn, 0);
     //printf("----------------\n");