Revert "Revert "Manage AST NODEs out of GC""

This re-introduces r60485.
This reverts commit 5a176b75b1187cbd3861c387bde65ff66396a07c.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60488 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 26 insertions, 8 deletions

diff --git a/node.h b/node.h
index 2fb0d53875..23b2bb11f8 100644
--- a/node.h
+++ b/node.h
@@ -439,6 +439,24 @@ typedef struct RNode {
 
 RUBY_SYMBOL_EXPORT_BEGIN
 
+typedef struct node_buffer_struct node_buffer_t;
+/* T_IMEMO/ast */
+typedef struct ast_struct {
+    VALUE flags;
+    VALUE reserved1;
+    NODE *root;
+    node_buffer_t *node_buffer;
+    VALUE mark_ary;
+} ast_t;
+ast_t *rb_ast_new();
+void rb_ast_mark(ast_t*);
+void rb_ast_dispose(ast_t*);
+void rb_ast_free(ast_t*);
+void rb_ast_add_mark_object(ast_t*, VALUE);
+void rb_ast_delete_mark_object(ast_t*, VALUE);
+NODE *rb_ast_newnode(ast_t*);
+void rb_ast_delete_node(ast_t*, NODE *n);
+
 VALUE rb_parser_new(void);
 VALUE rb_parser_end_seen_p(VALUE);
 VALUE rb_parser_encoding(VALUE);
@@ -447,15 +465,15 @@ VALUE rb_parser_set_yydebug(VALUE, VALUE);
 VALUE rb_parser_dump_tree(NODE *node, int comment);
 void rb_parser_set_options(VALUE, int, int, int, int);
 
-NODE *rb_parser_compile_cstr(VALUE, const char*, const char*, int, int);
-NODE *rb_parser_compile_string(VALUE, const char*, VALUE, int);
-NODE *rb_parser_compile_file(VALUE, const char*, VALUE, int);
-NODE *rb_parser_compile_string_path(VALUE vparser, VALUE fname, VALUE src, int line);
-NODE *rb_parser_compile_file_path(VALUE vparser, VALUE fname, VALUE input, int line);
+ast_t *rb_parser_compile_cstr(VALUE, const char*, const char*, int, int);
+ast_t *rb_parser_compile_string(VALUE, const char*, VALUE, int);
+ast_t *rb_parser_compile_file(VALUE, const char*, VALUE, int);
+ast_t *rb_parser_compile_string_path(VALUE vparser, VALUE fname, VALUE src, int line);
+ast_t *rb_parser_compile_file_path(VALUE vparser, VALUE fname, VALUE input, int line);
 
-NODE *rb_compile_cstr(const char*, const char*, int, int);
-NODE *rb_compile_string(const char*, VALUE, int);
-NODE *rb_compile_file(const char*, VALUE, int);
+ast_t *rb_compile_cstr(const char*, const char*, int, int);
+ast_t *rb_compile_string(const char*, VALUE, int);
+ast_t *rb_compile_file(const char*, VALUE, int);
 
 void rb_node_init(NODE *n, enum node_type type, VALUE a0, VALUE a1, VALUE a2);
 NODE *rb_node_newnode(enum node_type,VALUE,VALUE,VALUE);