From ea3b386062e62379c546239f2e95cb1e11c56d23 Mon Sep 17 00:00:00 2001
From: John Wiegley <johnw@newartisans.com>
Date: Fri, 1 Aug 2008 03:44:22 -0400
Subject: Added a new 'format' debugging command, which dissects the formatting
 expression in its argument.

---
 expr.cc | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

(limited to 'expr.cc')

diff --git a/expr.cc b/expr.cc
index 9e961ca0..263df13d 100644
--- a/expr.cc
+++ b/expr.cc
@@ -32,6 +32,7 @@
 #include "expr.h"
 #include "parser.h"
 #include "op.h"
+#include "scope.h"		// jww (2008-08-01): not necessary
 
 namespace ledger {
 
@@ -153,8 +154,10 @@ value_t expr_t::eval(const string& _expr, scope_t& scope)
 
 void expr_t::print(std::ostream& out, scope_t& scope) const
 {
-  op_t::print_context_t context(scope);
-  ptr->print(out, context);
+  if (ptr) {
+    op_t::print_context_t context(scope);
+    ptr->print(out, context);
+  }
 }
 
 void expr_t::dump(std::ostream& out) const
@@ -187,4 +190,11 @@ void expr_t::shutdown()
   parser.reset();
 }
 
+std::ostream& operator<<(std::ostream& out, const expr_t& expr) {
+  // jww (2008-08-01): shouldn't be necessary
+  symbol_scope_t scope;
+  expr.print(out, scope);
+  return out;
+}
+
 } // namespace ledger
-- 
cgit v1.2.3