ast.rb: RubyVM::AST.parse and .of accepts `save_script_lines: true`

This option makes the parser keep the original source as an array of
the original code lines. This feature exploits the mechanism of
`SCRIPT_LINES__` but records only the specified code that is passed to
RubyVM::AST.of or .parse, instead of recording all parsed program texts.

1 files changed, 1 insertions, 0 deletions

diff --git a/internal/parse.h b/internal/parse.h
index a37a39f84d..588b2b34da 100644
--- a/internal/parse.h
+++ b/internal/parse.h
@@ -15,6 +15,7 @@ struct rb_iseq_struct;          /* in vm_core.h */
 /* parse.y */
 VALUE rb_parser_set_yydebug(VALUE, VALUE);
 void *rb_parser_load_file(VALUE parser, VALUE name);
+void rb_parser_save_script_lines(VALUE vparser);
 
 RUBY_SYMBOL_EXPORT_BEGIN
 VALUE rb_parser_set_context(VALUE, const struct rb_iseq_struct *, int);