diff options
Diffstat (limited to 'src/parser.c')
| -rw-r--r-- | src/parser.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/src/parser.c b/src/parser.c index cb75817..0c9714a 100644 --- a/src/parser.c +++ b/src/parser.c @@ -46,7 +46,7 @@ pit_parser *pit_parser_from_lexer(pit_lexer *lex) { } // parse a single expression -pit_value pit_parse(pit_runtime *rt, pit_parser *st) { +pit_value pit_parse(pit_runtime *rt, pit_parser *st, bool *eof) { char buf[256] = {0}; pit_lex_token t = advance(st); switch (t) { @@ -54,7 +54,11 @@ pit_value pit_parse(pit_runtime *rt, pit_parser *st) { pit_error(rt, "encountered an error token while parsing"); return PIT_NIL; case PIT_LEX_TOKEN_EOF: - pit_error(rt, "end-of-file while parsing"); + if (eof != NULL) { + *eof = true; + } else { + pit_error(rt, "end-of-file while parsing"); + } return PIT_NIL; case PIT_LEX_TOKEN_LPAREN: { // to construct a cons-list, we need the arguments "backwards" @@ -64,7 +68,7 @@ pit_value pit_parse(pit_runtime *rt, pit_parser *st) { i64 scratch_reset = rt->scratch->next; while (!match(st, PIT_LEX_TOKEN_RPAREN)) { pit_value *cell = pit_arena_alloc_bulk(rt->scratch, sizeof(pit_value)); - *cell = pit_parse(rt, st); + *cell = pit_parse(rt, st, eof); if (rt->error != PIT_NIL) return PIT_NIL; // if we hit an error, stop! } pit_value ret = PIT_NIL; @@ -76,7 +80,7 @@ pit_value pit_parse(pit_runtime *rt, pit_parser *st) { return ret; } case PIT_LEX_TOKEN_QUOTE: - return pit_list(rt, 2, pit_intern_cstr(rt, "quote"), pit_parse(rt, st)); + return pit_list(rt, 2, pit_intern_cstr(rt, "quote"), pit_parse(rt, st, eof)); case PIT_LEX_TOKEN_INTEGER_LITERAL: get_token_string(st, buf, sizeof(buf)); return pit_integer_new(rt, atoi(buf)); |