Add pattern matching pin support for instance/class/global variables

Pin matching for local variables and constants is already supported,
and it is fairly simple to add support for these variable types.

Note that pin matching for method calls is still not supported
without wrapping in parentheses (pin expressions).  I think that's
for the best as method calls are far more complex (arguments/blocks).

Implements [Feature #17724]

1 files changed, 3 insertions, 0 deletions

diff --git a/compile.c b/compile.c
index a7862194c0..38a96f165e 100644
--- a/compile.c
+++ b/compile.c
@@ -6462,6 +6462,9 @@ iseq_compile_pattern_each(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *c
       case NODE_CONST:
       case NODE_LVAR:
       case NODE_DVAR:
+      case NODE_IVAR:
+      case NODE_CVAR:
+      case NODE_GVAR:
       case NODE_TRUE:
       case NODE_FALSE:
       case NODE_SELF: