From 756880a5f5e5df2474a9770d27fa3751b0be4916 Mon Sep 17 00:00:00 2001
From: Patrick Walton <pcwalton@mimiga.net>
Date: Wed, 24 Nov 2010 14:42:01 -0800
Subject: rustc: Parse simple patterns

---
 src/comp/front/ast.rs | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'src/comp/front/ast.rs')

diff --git a/src/comp/front/ast.rs b/src/comp/front/ast.rs
index 2a590d02..954440dd 100644
--- a/src/comp/front/ast.rs
+++ b/src/comp/front/ast.rs
@@ -39,6 +39,15 @@ type block = spanned[block_];
 type block_ = rec(vec[@stmt] stmts,
                   hashmap[ident,uint] index);
 
+type pat = spanned[pat_];
+tag pat_ {
+    pat_wild;
+    pat_bind(ident);
+    pat_tag(ident, vec[@pat]);
+}
+
+type arm = rec(@pat pat, block block);
+
 tag binop {
     add;
     sub;
@@ -104,6 +113,7 @@ tag expr_ {
     expr_if(@expr, block, option.t[block], ann);
     expr_while(@expr, block, ann);
     expr_do_while(block, @expr, ann);
+    expr_alt(@expr, vec[arm], ann);
     expr_block(block, ann);
     expr_assign(@expr /* TODO: @expr|is_lval */, @expr, ann);
     expr_field(@expr, ident, ann);
-- 
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