Make it possible to get AST::Node from Thread::Backtrace::Location

RubyVM::AST.of(Thread::Backtrace::Location) returns a node that
corresponds to the location. Typically, the node is a method call, but
not always.

This change also includes iseq's dump/load support of node_ids for each
instructions.

1 files changed, 2 insertions, 0 deletions

diff --git a/internal/vm.h b/internal/vm.h
index 689b4fa61f..8251b09e98 100644
--- a/internal/vm.h
+++ b/internal/vm.h
@@ -111,6 +111,8 @@ int rb_backtrace_p(VALUE obj);
 VALUE rb_backtrace_to_str_ary(VALUE obj);
 VALUE rb_backtrace_to_location_ary(VALUE obj);
 void rb_backtrace_each(VALUE (*iter)(VALUE recv, VALUE str), VALUE output);
+int rb_frame_info_p(VALUE obj);
+void rb_frame_info_get(VALUE obj, VALUE *path, int *node_id);
 
 MJIT_SYMBOL_EXPORT_BEGIN
 VALUE rb_ec_backtrace_object(const struct rb_execution_context_struct *ec);