Add NODE SCLASS locations

Add locations to struct `RNode_SCLASS`.

memo:

```
@ ProgramNode (location: (1,0)-(1,18))
+-- locals: []
+-- statements:
    @ StatementsNode (location: (1,0)-(1,18))
    +-- body: (length: 1)
        +-- @ SingletonClassNode (location: (1,0)-(1,18))
            +-- locals: []
            +-- class_keyword_loc: (1,0)-(1,5) = "class"
            +-- operator_loc: (1,6)-(1,8) = "<<"
            +-- expression:
            |   @ SelfNode (location: (1,9)-(1,13))
            +-- body: nil
            +-- end_keyword_loc: (1,15)-(1,18) = "end"
```

1 files changed, 7 insertions, 4 deletions

diff --git a/parse.y b/parse.y
index 765b4bdfd0..a6c5e2e5b9 100644
--- a/parse.y
+++ b/parse.y
@@ -1146,7 +1146,7 @@ static rb_node_valias_t *rb_node_valias_new(struct parser_params *p, ID nd_alias
 static rb_node_undef_t *rb_node_undef_new(struct parser_params *p, NODE *nd_undef, const YYLTYPE *loc);
 static rb_node_class_t *rb_node_class_new(struct parser_params *p, NODE *nd_cpath, NODE *nd_body, NODE *nd_super, const YYLTYPE *loc, const YYLTYPE *class_keyword_loc, const YYLTYPE *inheritance_operator_loc, const YYLTYPE *end_keyword_loc);
 static rb_node_module_t *rb_node_module_new(struct parser_params *p, NODE *nd_cpath, NODE *nd_body, const YYLTYPE *loc, const YYLTYPE *module_keyword_loc, const YYLTYPE *end_keyword_loc);
-static rb_node_sclass_t *rb_node_sclass_new(struct parser_params *p, NODE *nd_recv, NODE *nd_body, const YYLTYPE *loc);
+static rb_node_sclass_t *rb_node_sclass_new(struct parser_params *p, NODE *nd_recv, NODE *nd_body, const YYLTYPE *loc, const YYLTYPE *class_keyword_loc, const YYLTYPE *operator_loc, const YYLTYPE *end_keyword_loc);
 static rb_node_colon2_t *rb_node_colon2_new(struct parser_params *p, NODE *nd_head, ID nd_mid, const YYLTYPE *loc, const YYLTYPE *delimiter_loc, const YYLTYPE *name_loc);
 static rb_node_colon3_t *rb_node_colon3_new(struct parser_params *p, ID nd_mid, const YYLTYPE *loc, const YYLTYPE *delimiter_loc, const YYLTYPE *name_loc);
 static rb_node_dot2_t *rb_node_dot2_new(struct parser_params *p, NODE *nd_beg, NODE *nd_end, const YYLTYPE *loc, const YYLTYPE *operator_loc);
@@ -1254,7 +1254,7 @@ static rb_node_error_t *rb_node_error_new(struct parser_params *p, const YYLTYPE
 #define NEW_UNDEF(i,loc) (NODE *)rb_node_undef_new(p,i,loc)
 #define NEW_CLASS(n,b,s,loc,ck_loc,io_loc,ek_loc) (NODE *)rb_node_class_new(p,n,b,s,loc,ck_loc,io_loc,ek_loc)
 #define NEW_MODULE(n,b,loc,mk_loc,ek_loc) (NODE *)rb_node_module_new(p,n,b,loc,mk_loc,ek_loc)
-#define NEW_SCLASS(r,b,loc) (NODE *)rb_node_sclass_new(p,r,b,loc)
+#define NEW_SCLASS(r,b,loc,ck_loc,op_loc,ek_loc) (NODE *)rb_node_sclass_new(p,r,b,loc,ck_loc,op_loc,ek_loc)
 #define NEW_COLON2(c,i,loc,d_loc,n_loc) (NODE *)rb_node_colon2_new(p,c,i,loc,d_loc,n_loc)
 #define NEW_COLON3(i,loc,d_loc,n_loc) (NODE *)rb_node_colon3_new(p,i,loc,d_loc,n_loc)
 #define NEW_DOT2(b,e,loc,op_loc) (NODE *)rb_node_dot2_new(p,b,e,loc,op_loc)
@@ -4605,7 +4605,7 @@ primary		: inline_primary
               bodystmt
               k_end
                 {
-                    $$ = NEW_SCLASS($expr_value, $bodystmt, &@$);
+                    $$ = NEW_SCLASS($expr_value, $bodystmt, &@$, &@k_class, &@tLSHFT, &@k_end);
                     nd_set_line(RNODE_SCLASS($$)->nd_body, @k_end.end_pos.lineno);
                     set_line_body($bodystmt, nd_line($expr_value));
                     fixpos($$, $expr_value);
@@ -11431,7 +11431,7 @@ rb_node_class_new(struct parser_params *p, NODE *nd_cpath, NODE *nd_body, NODE *
 }
 
 static rb_node_sclass_t *
-rb_node_sclass_new(struct parser_params *p, NODE *nd_recv, NODE *nd_body, const YYLTYPE *loc)
+rb_node_sclass_new(struct parser_params *p, NODE *nd_recv, NODE *nd_body, const YYLTYPE *loc, const YYLTYPE *class_keyword_loc, const YYLTYPE *operator_loc, const YYLTYPE *end_keyword_loc)
 {
     /* Keep the order of node creation */
     NODE *scope = NEW_SCOPE(0, nd_body, NULL, loc);
@@ -11439,6 +11439,9 @@ rb_node_sclass_new(struct parser_params *p, NODE *nd_recv, NODE *nd_body, const
     RNODE_SCOPE(scope)->nd_parent = &n->node;
     n->nd_recv = nd_recv;
     n->nd_body = scope;
+    n->class_keyword_loc = *class_keyword_loc;
+    n->operator_loc = *operator_loc;
+    n->end_keyword_loc = *end_keyword_loc;
 
     return n;
 }