From 0ec707867945e7ab3d9fa5d2298c9d65edc743ac Mon Sep 17 00:00:00 2001
From: John Hodge <tpg@mutabah.net>
Date: Mon, 26 Sep 2016 16:16:13 +0800
Subject: Expand cfg - Support cfg() on struct fields and enum variants

---
 src/expand/cfg.cpp | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/src/expand/cfg.cpp b/src/expand/cfg.cpp
index c79e9872..746fd513 100644
--- a/src/expand/cfg.cpp
+++ b/src/expand/cfg.cpp
@@ -155,6 +155,25 @@ class CCfgHandler:
             impl.type() = ::TypeRef();
         }
     }
+    
+    void handle(const Span& sp, const AST::MetaItem& mi, AST::Crate& crate, ::AST::StructItem& si) const override {
+        DEBUG("#[cfg] struct item - " << mi);
+        if( !check_cfg(sp, mi) ) {
+            si.m_name = "";
+        }
+    }
+    void handle(const Span& sp, const AST::MetaItem& mi, AST::Crate& crate, ::AST::TupleItem& i) const override {
+        DEBUG("#[cfg] tuple item - " << mi);
+        if( !check_cfg(sp, mi) ) {
+            i.m_type = ::TypeRef();
+        }
+    }
+    void handle(const Span& sp, const AST::MetaItem& mi, AST::Crate& crate, ::AST::EnumVariant& i) const override {
+        DEBUG("#[cfg] enum variant - " << mi);
+        if( !check_cfg(sp, mi) ) {
+            i.m_name = "";
+        }
+    }
 };
 
 STATIC_MACRO("cfg", CCfgExpander);
-- 
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