From 713f308d0fda2cef2f171feac860e65d5483e56d Mon Sep 17 00:00:00 2001
From: John Wiegley <johnw@newartisans.com>
Date: Sat, 8 May 2010 02:01:59 -0400
Subject: interactive_t now takes an "X" for expressions

---
 src/interactive.cc |  4 ++++
 src/interactive.h  | 13 +++++++++++++
 2 files changed, 17 insertions(+)

(limited to 'src')

diff --git a/src/interactive.cc b/src/interactive.cc
index d0baf07a..9aeb5307 100644
--- a/src/interactive.cc
+++ b/src/interactive.cc
@@ -122,6 +122,10 @@ void interactive_t::verify_arguments() const
       label = _("a scope");
       wrong_arg = ! next_arg->is_scope();
       break;
+    case 'X':
+      label = _("an expression");
+      wrong_arg = ! next_arg->is_expr();
+      break;
     case 'S':
       label = _("a sequence");
       wrong_arg = false;
diff --git a/src/interactive.h b/src/interactive.h
index fbc4ffeb..04c23ae5 100644
--- a/src/interactive.h
+++ b/src/interactive.h
@@ -120,6 +120,19 @@ inline const value_t::sequence_t&
 interactive_t::get<const value_t::sequence_t&>(std::size_t index) {
   return value_at(index).as_sequence();
 }
+template <>
+inline scope_t *
+interactive_t::get<scope_t *>(std::size_t index) {
+  return value_at(index).as_scope();
+}
+template <>
+inline expr_t& interactive_t::get<expr_t&>(std::size_t index) {
+  return value_at(index).as_expr_lval();
+}
+template <>
+inline const expr_t& interactive_t::get<const expr_t&>(std::size_t index) {
+  return value_at(index).as_expr();
+}
 
 template <typename T>
 class in_context_t : public interactive_t
-- 
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