[PATCH olang] parser: abort when parser identifies a syntax error

[Johnny Richard <johnny@johnnyrichard.com>]

The current implementation fails with segfault when the parser finds a
syntax error.  We are not prepared to recover from errors at this
moment.

This patch aborts when found an expected token and it also improves the
error output by showing the wrong token string value.

Signed-off-by: Johnny Richard <johnny@johnnyrichard.com>
---
Let's postpone syntax error recovery.  I want to keep things simple
right now.

 src/parser.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/parser.c b/src/parser.c
index a9699be..cfea9ef 100644
--- a/src/parser.c
+++ b/src/parser.c
@@ -173,18 +173,18 @@ expected_token(parser_t *parser, token_t *token, token_kind_t expected_kind)
 
     if (token->kind != expected_kind) {
         fprintf(stderr,
-                "%s:%lu:%lu: error: got <%s> token but expect <%s>\n",
+                "%s:%lu:%lu: error: got '"SV_FMT"' token but expect <%s>\n",
                 parser->file_path,
                 token->location.row + 1,
                 (token->location.offset - token->location.bol) + 1,
-                token_kind_to_cstr(token->kind),
+                SV_ARG(token->value),
                 token_kind_to_cstr(expected_kind));
 
         string_view_t line = lexer_get_token_line(parser->lexer, token);
         fprintf(stderr, "" SV_FMT "\n", SV_ARG(line));
         fprintf(stderr, "%*s\n", (int)(token->location.offset - token->location.bol + 1), "^");
 
-        return false;
+        exit(EXIT_FAILURE);
     }
     return true;
 }

base-commit: 35f594370443a2b9f73d2d2ebe573b4cab472be6
-- 
2.44.0