Pretty-printing CTX diff.

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

diff --git a/projects/sgconf/actions.h b/projects/sgconf/actions.h
index c88de14dc7f5f306e5b0ee0421485a5945f5724f..a078e6b222fa979ead48b8bb441c5159a8494e45 100644 (file)
--- a/projects/sgconf/actions.h
+++ b/projects/sgconf/actions.h
@@ -18,17 +18,18 @@
  *    Author : Maxim Mamontov <faust@stargazer.dp.ua>
  */
 
-#ifndef __STG_SGCONF_ACTIONS_H__
-#define __STG_SGCONF_ACTIONS_H__
+#pragma once
 
 #include "action.h"
 #include "options.h"
 #include "parser_state.h"
 
 #include "stg/common.h"
-#include "stg/resetable.h"
 
 #include <string>
+#include <optional>
+
+#include <cassert>
 
 namespace SGCONF
 {
@@ -39,17 +40,15 @@ template <typename F>
 class FUNC0_ACTION : public ACTION
 {
     public:
-        FUNC0_ACTION(const F & func) : m_func(func) {}
-
-        virtual ACTION * Clone() const { return new FUNC0_ACTION<F>(*this); }
+        explicit FUNC0_ACTION(const F & func) : m_func(func) {}
 
-        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)
+        std::string ParamDescription() const override { return ""; }
+        std::string DefaultDescription() const override { return ""; }
+        OPTION_BLOCK & Suboptions() override { return m_suboptions; }
+        PARSER_STATE Parse(int argc, char ** argv, void * /*data*/) override
         {
-        m_func();
-        return PARSER_STATE(true, argc, argv);
+            m_func();
+            return PARSER_STATE(true, argc, argv);
         }
 
     private:
@@ -59,16 +58,16 @@ class FUNC0_ACTION : public ACTION
 
 template <typename F>
 inline
-FUNC0_ACTION<F> * MakeFunc0Action(F func)
+std::unique_ptr<ACTION> MakeFunc0Action(F func)
 {
-return new FUNC0_ACTION<F>(func);
+return std::make_unique<FUNC0_ACTION<F>>(func);
 }
 
 template <typename T>
 class PARAM_ACTION : public ACTION
 {
     public:
-        PARAM_ACTION(RESETABLE<T> & param,
+        PARAM_ACTION(std::optional<T> & param,
                      const T & defaultValue,
                      const std::string & paramDescription)
             : m_param(param),
@@ -76,22 +75,25 @@ class PARAM_ACTION : public ACTION
               m_description(paramDescription),
               m_hasDefault(true)
         {}
-        PARAM_ACTION(RESETABLE<T> & param,
+        explicit PARAM_ACTION(std::optional<T> & param)
+            : m_param(param),
+              m_hasDefault(false)
+        {}
+        PARAM_ACTION(std::optional<T> & param,
                      const std::string & paramDescription)
             : m_param(param),
               m_description(paramDescription),
               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);
+        std::string ParamDescription() const override { return m_description; }
+        std::string DefaultDescription() const override;
+        OPTION_BLOCK & Suboptions() override { return m_suboptions; }
+        PARSER_STATE Parse(int argc, char ** argv, void * /*data*/) override;
+        void ParseValue(const std::string & value) override;
 
     private:
-        RESETABLE<T> & m_param;
+        std::optional<T> & m_param;
         T m_defaltValue;
         std::string m_description;
         bool m_hasDefault;
@@ -102,7 +104,7 @@ template <typename T>
 inline
 std::string PARAM_ACTION<T>::DefaultDescription() const
 {
-return m_hasDefault ? " (default: '" + x2str(m_defaltValue) + "')"
+return m_hasDefault ? " (default: '" + std::to_string(m_defaltValue) + "')"
                     : "";
 }
 
@@ -116,7 +118,7 @@ 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 ||
@@ -131,7 +133,34 @@ return PARSER_STATE(false, --argc, ++argv);
 
 template <>
 inline
-PARSER_STATE PARAM_ACTION<std::string>::Parse(int argc, char ** argv)
+PARSER_STATE PARAM_ACTION<bool>::Parse(int argc, char ** argv, void * /*data*/)
+{
+m_param = true;
+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
+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 ||
@@ -143,21 +172,66 @@ return PARSER_STATE(false, --argc, ++argv);
 
 template <typename T>
 inline
-PARAM_ACTION<T> * MakeParamAction(RESETABLE<T> & param,
-                                  const T & defaultValue,
-                                  const std::string & paramDescription)
+std::unique_ptr<ACTION> MakeParamAction(std::optional<T> & param,
+                                        const T & defaultValue,
+                                        const std::string & paramDescription)
 {
-return new PARAM_ACTION<T>(param, defaultValue, paramDescription);
+return std::make_unique<PARAM_ACTION<T>>(param, defaultValue, paramDescription);
 }
 
 template <typename T>
 inline
-PARAM_ACTION<T> * MakeParamAction(RESETABLE<T> & param,
-                                  const std::string & paramDescription)
+std::unique_ptr<ACTION> MakeParamAction(std::optional<T> & param)
 {
-return new PARAM_ACTION<T>(param, paramDescription);
+return std::make_unique<PARAM_ACTION<T>>(param);
 }
 
-} // namespace SGCONF
+template <typename T>
+inline
+std::unique_ptr<ACTION> MakeParamAction(std::optional<T> & param,
+                                        const std::string & paramDescription)
+{
+return std::make_unique<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)
+        {}
+
+        std::string ParamDescription() const override { return m_description; }
+        std::string DefaultDescription() const override { return ""; }
+        OPTION_BLOCK & Suboptions() override { return m_suboptions; }
+        PARSER_STATE Parse(int argc, char ** argv, void * data) override;
+
+    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
+std::unique_ptr<ACTION> MakeKVAction(const std::string & name,
+                                     const std::string & paramDescription)
+{
+return std::make_unique<KV_ACTION>(name, paramDescription);
+}
 
-#endif
+} // namespace SGCONF