syntax: Begin moving functions from mod parser to mod classify

1 files changed, 31 insertions, 0 deletions

diff --git a/src/librustsyntax/parse/classify.rs b/src/librustsyntax/parse/classify.rs
new file mode 100644
index 00000000000..f2c9aece0c1
--- /dev/null
+++ b/src/librustsyntax/parse/classify.rs
@@ -0,0 +1,31 @@
+// FIXME: There are a bunch of similar functions in pprust that
+// likely belong here
+
+fn expr_requires_semi_to_be_stmt(e: @ast::expr) -> bool {
+    alt e.node {
+      ast::expr_if(_, _, _) | ast::expr_if_check(_, _, _)
+      | ast::expr_alt(_, _, _) | ast::expr_block(_)
+      | ast::expr_do_while(_, _) | ast::expr_while(_, _)
+      | ast::expr_loop(_) | ast::expr_call(_, _, true) {
+        false
+      }
+      _ { true }
+    }
+}
+
+fn stmt_ends_with_semi(stmt: ast::stmt) -> bool {
+    alt stmt.node {
+      ast::stmt_decl(d, _) {
+        ret alt d.node {
+              ast::decl_local(_) { true }
+              ast::decl_item(_) { false }
+            }
+      }
+      ast::stmt_expr(e, _) {
+        ret expr_requires_semi_to_be_stmt(e);
+      }
+      ast::stmt_semi(e, _) {
+        ret false;
+      }
+    }
+}