User parser refactoring.

[stg.git] / projects / sgconf / actions.h

diff --git a/projects/sgconf/actions.h b/projects/sgconf/actions.h
index 739fbf14af85a886e753c1ddf96f1a46a055cd2e..07bcfb8b22b19c58f803d03e8c8d85a53975a31a 100644 (file)
--- a/projects/sgconf/actions.h
+++ b/projects/sgconf/actions.h
@@ -30,34 +30,44 @@
 
 #include <string>
 
+#include <cassert>
+
 namespace SGCONF
 {
 
 typedef void (* FUNC0)();
 
+template <typename F>
 class FUNC0_ACTION : public ACTION
 {
     public:
-        FUNC0_ACTION(FUNC0 func) : m_func(func) {}
+        FUNC0_ACTION(const F & func) : m_func(func) {}
+
+        virtual ACTION * Clone() const { return new FUNC0_ACTION<F>(*this); }
 
         virtual std::string ParamDescription() const { return ""; }
         virtual std::string DefaultDescription() const { return ""; }
         virtual OPTION_BLOCK & Suboptions() { return m_suboptions; }
-        virtual PARSER_STATE Parse(int argc, char ** argv);
+        virtual PARSER_STATE Parse(int argc, char ** argv, void * /*data*/)
+        {
+        m_func();
+        return PARSER_STATE(true, argc, argv);
+        }
 
     private:
-        FUNC0 m_func;
+        F m_func;
         OPTION_BLOCK m_suboptions;
 };
 
+template <typename F>
 inline
-FUNC0_ACTION * MakeFunc0Action(FUNC0 func)
+FUNC0_ACTION<F> * MakeFunc0Action(F func)
 {
-return new FUNC0_ACTION(func);
+return new FUNC0_ACTION<F>(func);
 }
 
 template <typename T>
-class PARAM_ACTION: public ACTION
+class PARAM_ACTION : public ACTION
 {
     public:
         PARAM_ACTION(RESETABLE<T> & param,
@@ -75,10 +85,13 @@ class PARAM_ACTION: public ACTION
               m_hasDefault(false)
         {}
 
+        virtual ACTION * Clone() const { return new PARAM_ACTION<T>(*this); }
+
         virtual std::string ParamDescription() const { return m_description; }
         virtual std::string DefaultDescription() const;
         virtual OPTION_BLOCK & Suboptions() { return m_suboptions; }
-        virtual PARSER_STATE Parse(int argc, char ** argv);
+        virtual PARSER_STATE Parse(int argc, char ** argv, void * /*data*/);
+        virtual void ParseValue(const std::string & value);
 
     private:
         RESETABLE<T> & m_param;
@@ -106,8 +119,12 @@ return m_hasDefault ? " (default: '" + m_defaltValue + "')"
 
 template <typename T>
 inline
-PARSER_STATE PARAM_ACTION<T>::Parse(int argc, char ** argv)
+PARSER_STATE PARAM_ACTION<T>::Parse(int argc, char ** argv, void * /*data*/)
 {
+if (argc == 0 ||
+    argv == NULL ||
+    *argv == NULL)
+    throw ERROR("Missing argument.");
 T value;
 if (str2x(*argv, value))
     throw ERROR(std::string("Bad argument: '") + *argv + "'");
@@ -115,10 +132,33 @@ m_param = value;
 return PARSER_STATE(false, --argc, ++argv);
 }
 
+template <typename T>
+inline
+void PARAM_ACTION<T>::ParseValue(const std::string & stringValue)
+{
+if (stringValue.empty())
+    throw ERROR("Missing value.");
+T value;
+if (str2x(stringValue, value))
+    throw ERROR(std::string("Bad value: '") + stringValue + "'");
+m_param = value;
+}
+
 template <>
 inline
-PARSER_STATE PARAM_ACTION<std::string>::Parse(int argc, char ** argv)
+void PARAM_ACTION<std::string>::ParseValue(const std::string & stringValue)
 {
+m_param = stringValue;
+}
+
+template <>
+inline
+PARSER_STATE PARAM_ACTION<std::string>::Parse(int argc, char ** argv, void * /*data*/)
+{
+if (argc == 0 ||
+    argv == NULL ||
+    *argv == NULL)
+    throw ERROR("Missing argument.");
 m_param = *argv;
 return PARSER_STATE(false, --argc, ++argv);
 }
@@ -140,6 +180,48 @@ PARAM_ACTION<T> * MakeParamAction(RESETABLE<T> & param,
 return new PARAM_ACTION<T>(param, paramDescription);
 }
 
+class KV_ACTION : public ACTION
+{
+    public:
+        KV_ACTION(const std::string & name,
+                  const std::string & paramDescription)
+            : m_name(name),
+              m_description(paramDescription)
+        {}
+
+        virtual ACTION * Clone() const { return new KV_ACTION(*this); }
+
+        virtual std::string ParamDescription() const { return m_description; }
+        virtual std::string DefaultDescription() const { return ""; }
+        virtual OPTION_BLOCK & Suboptions() { return m_suboptions; }
+        virtual PARSER_STATE Parse(int argc, char ** argv, void * data);
+
+    private:
+        std::string m_name;
+        std::string m_description;
+        OPTION_BLOCK m_suboptions;
+};
+
+inline
+PARSER_STATE KV_ACTION::Parse(int argc, char ** argv, void * data)
+{
+if (argc == 0 ||
+    argv == NULL ||
+    *argv == NULL)
+    throw ERROR("Missing argument.");
+assert(data != NULL && "Expecting container pointer.");
+std::map<std::string, std::string> & kvs = *static_cast<std::map<std::string, std::string>*>(data);
+kvs[m_name] = *argv;
+return PARSER_STATE(false, --argc, ++argv);
+}
+
+inline
+KV_ACTION * MakeKVAction(const std::string & name,
+                         const std::string & paramDescription)
+{
+return new KV_ACTION(name, paramDescription);
+}
+
 } // namespace SGCONF
 
 #endif