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[PRISM] Support the DATA constant

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This commit is contained in:
Kevin Newton 2024-02-08 13:56:05 -05:00
parent 1936278461
commit 3ecfc3e33e
2 changed files with 16 additions and 0 deletions
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1
prism/prism.c
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@ -17791,6 +17791,7 @@ pm_parser_init(pm_parser_t *parser, const uint8_t *source, size_t size, const pm
.current = { .type = PM_TOKEN_EOF, .start = source, .end = source }, .current = { .type = PM_TOKEN_EOF, .start = source, .end = source },
.next_start = NULL, .next_start = NULL,
.heredoc_end = NULL, .heredoc_end = NULL,
.data_loc = { .start = NULL, .end = NULL },
.comment_list = { 0 }, .comment_list = { 0 },
.magic_comment_list = { 0 }, .magic_comment_list = { 0 },
.warning_list = { 0 }, .warning_list = { 0 },

15
ruby.c
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@ -2423,6 +2423,21 @@ process_options(int argc, char **argv, ruby_cmdline_options_t *opt)
} }
else { else {
error = pm_parse_file(&result, opt->script_name); error = pm_parse_file(&result, opt->script_name);
// If we found an __END__ marker, then we're going to define a
// global DATA constant that is a file object that can be read
// to read the contents after the marker.
if (error == Qnil && result.parser.data_loc.start != NULL) {
int xflag = opt->xflag;
VALUE file = open_load_file(opt->script_name, &xflag);
size_t offset = result.parser.data_loc.start - result.parser.start + 7;
if ((result.parser.start + offset < result.parser.end) && result.parser.start[offset] == '\r') offset++;
if ((result.parser.start + offset < result.parser.end) && result.parser.start[offset] == '\n') offset++;
rb_funcall(file, rb_intern("seek"), 2, LONG2NUM(offset), INT2FIX(SEEK_SET));
rb_define_global_const("DATA", file);
}
} }
if (error == Qnil) { if (error == Qnil) {