Introduce pattern matching [EXPERIMENTAL]

[ruby-core:87945] [Feature #14912]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67586 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 19 insertions, 0 deletions

diff --git a/node.h b/node.h
index 5b917daae4..f70cdc959a 100644
--- a/node.h
+++ b/node.h
@@ -26,7 +26,9 @@ enum node_type {
     NODE_UNLESS,
     NODE_CASE,
     NODE_CASE2,
+    NODE_CASE3,
     NODE_WHEN,
+    NODE_IN,
     NODE_WHILE,
     NODE_UNTIL,
     NODE_ITER,
@@ -121,6 +123,8 @@ enum node_type {
     NODE_ATTRASGN,
     NODE_LAMBDA,
     NODE_METHREF,
+    NODE_ARYPTN,
+    NODE_HSHPTN,
     NODE_LAST
 };
 
@@ -162,6 +166,7 @@ typedef struct RNode {
 	long state;
 	struct rb_global_entry *entry;
 	struct rb_args_info *args;
+        struct rb_ary_pattern_info *apinfo;
 	VALUE value;
     } u3;
     rb_code_location_t nd_loc;
@@ -268,6 +273,12 @@ typedef struct RNode {
 
 #define nd_brace u2.argc
 
+#define nd_pconst     u1.node
+#define nd_pkwargs    u2.node
+#define nd_pkwrestarg u3.node
+
+#define nd_apinfo u3.apinfo
+
 #define NEW_NODE(t,a0,a1,a2,loc) rb_node_newnode((t),(VALUE)(a0),(VALUE)(a1),(VALUE)(a2),loc)
 
 #define NEW_DEFN(i,a,d,loc) NEW_NODE(NODE_DEFN,0,i,NEW_SCOPE(a,d,loc),loc)
@@ -278,7 +289,9 @@ typedef struct RNode {
 #define NEW_UNLESS(c,t,e,loc) NEW_NODE(NODE_UNLESS,c,t,e,loc)
 #define NEW_CASE(h,b,loc) NEW_NODE(NODE_CASE,h,b,0,loc)
 #define NEW_CASE2(b,loc) NEW_NODE(NODE_CASE2,0,b,0,loc)
+#define NEW_CASE3(h,b,loc) NEW_NODE(NODE_CASE3,h,b,0,loc)
 #define NEW_WHEN(c,t,e,loc) NEW_NODE(NODE_WHEN,c,t,e,loc)
+#define NEW_IN(c,t,e,loc) NEW_NODE(NODE_IN,c,t,e,loc)
 #define NEW_WHILE(c,b,n,loc) NEW_NODE(NODE_WHILE,c,b,n,loc)
 #define NEW_UNTIL(c,b,n,loc) NEW_NODE(NODE_UNTIL,c,b,n,loc)
 #define NEW_FOR(i,b,loc) NEW_NODE(NODE_FOR,0,b,i,loc)
@@ -434,6 +447,12 @@ struct rb_args_info {
     NODE *opt_args;
 };
 
+struct rb_ary_pattern_info {
+    NODE *pre_args;
+    NODE *rest_arg;
+    NODE *post_args;
+};
+
 struct parser_params;
 void *rb_parser_malloc(struct parser_params *, size_t);
 void *rb_parser_realloc(struct parser_params *, void *, size_t);