From b5854ece4383687e41ea69ac6896acd0a894510d Mon Sep 17 00:00:00 2001
From: Maxime Coste <frrrwww@gmail.com>
Date: Sat, 14 Mar 2015 19:16:46 +0000
Subject: Change ParameterParser switch interface, use an Optional<StringView>

Merge has_option and option_value into a single method get_switch.
---
 src/parameters_parser.cc | 30 ++++++------------------------
 1 file changed, 6 insertions(+), 24 deletions(-)

(limited to 'src/parameters_parser.cc')

diff --git a/src/parameters_parser.cc b/src/parameters_parser.cc
index 0e6f0bc5..6448cca5 100644
--- a/src/parameters_parser.cc
+++ b/src/parameters_parser.cc
@@ -46,38 +46,20 @@ ParametersParser::ParametersParser(ParameterList params,
         throw wrong_argument_count();
 }
 
-bool ParametersParser::has_option(const String& name) const
+Optional<StringView> ParametersParser::get_switch(StringView name) const
 {
-    kak_assert(m_desc.switches.find(name) != m_desc.switches.end());
-    for (auto& param : m_params)
-    {
-        if (param[0_byte] == '-' and param.substr(1_byte) == name)
-            return true;
-
-        if (param == "--")
-            break;
-    }
-    return false;
-}
-
-const String& ParametersParser::option_value(const String& name) const
-{
-#ifdef KAK_DEBUG
     auto it = m_desc.switches.find(name);
     kak_assert(it != m_desc.switches.end());
-    kak_assert(it->second.takes_arg);
-#endif
-
     for (size_t i = 0; i < m_params.size(); ++i)
     {
-        if (m_params[i][0_byte] == '-' and m_params[i].substr(1_byte) == name)
-            return m_params[i+1];
+        const auto& param = m_params[i];
+        if (param[0_byte] == '-' and param.substr(1_byte) == name)
+            return it->second.takes_arg ? m_params[i+1] : StringView{};
 
-        if (m_params[i] == "--")
+        if (param == "--")
             break;
     }
-    static String empty;
-    return empty;
+    return {};
 }
 
 }
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