From 30e436bba66673e17728e3ba3291b58dd16c1696 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Sat, 7 Jul 2018 10:46:25 +0200
Subject: Add optional message to invalid_option exception

---
 cli/runtime-header.cxx | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

(limited to 'cli/runtime-header.cxx')

diff --git a/cli/runtime-header.cxx b/cli/runtime-header.cxx
index e9e797a..60e90cc 100644
--- a/cli/runtime-header.cxx
+++ b/cli/runtime-header.cxx
@@ -170,7 +170,8 @@ generate_runtime_header (context& ctx)
      << "~invalid_value () throw ();"
      << endl
      << "invalid_value (const std::string& option," << endl
-     << "const std::string& value);"
+     << "const std::string& value," << endl
+     << "const std::string& message = std::string ());"
      << endl
      << "const std::string&" << endl
      << "option () const;"
@@ -178,6 +179,9 @@ generate_runtime_header (context& ctx)
      << "const std::string&" << endl
      << "value () const;"
      << endl
+     << "const std::string&" << endl
+     << "message () const;"
+     << endl
      << "virtual void" << endl
      << "print (" << os_type << "&) const;"
      << endl
@@ -187,6 +191,7 @@ generate_runtime_header (context& ctx)
      << "private:" << endl
      << "std::string option_;"
      << "std::string value_;"
+     << "std::string message_;"
      << "};";
 
   os << "class eos_reached: public exception"
-- 
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