More efficient way of loading binary files

[libs/datafile.git] / source / loaderaction.h

diff --git a/source/loaderaction.h b/source/loaderaction.h
index afca01e9ba3b478d95bd320e550f0cf7fbf08fff..82fd3b437902a3494167ae295c7f065184424a5b 100644 (file)
--- a/source/loaderaction.h
+++ b/source/loaderaction.h
@@ -1,6 +1,7 @@
 #ifndef MSP_DATAFILE_LOADERACTION_H_
 #define MSP_DATAFILE_LOADERACTION_H_
 
+#include "argumentstore.h"
 #include "statement.h"
 
 namespace Msp {
@@ -21,6 +22,8 @@ public:
        /** Called to process a statement. */
        virtual void execute(Loader &, const Statement &) const = 0;
 
+       virtual void execute(Loader &, const ArgumentStore &) const = 0;
+
        virtual std::string get_signature() const = 0;
 };
 
@@ -44,6 +47,11 @@ public:
                (dynamic_cast<L &>(l).*func)();
        };
 
+       virtual void execute(Loader &l, const ArgumentStore &) const
+       {
+               (dynamic_cast<L &>(l).*func)();
+       };
+
        virtual std::string get_signature() const
        { return std::string(); }
 };
@@ -68,6 +76,11 @@ public:
                (dynamic_cast<L &>(l).*func)(st.args[0].get<A0>());
        }
 
+       virtual void execute(Loader &l, const ArgumentStore &as) const
+       {
+               (dynamic_cast<L &>(l).*func)(as.get<A0>(0));
+       }
+
        virtual std::string get_signature() const
        { return std::string(1, TypeInfo<A0>::signature); }
 };
@@ -96,6 +109,16 @@ public:
                (dynamic_cast<L &>(l).*func)(values);
        }
 
+       virtual void execute(Loader &l, const ArgumentStore &as) const
+       {
+               std::vector<A0> values;
+               unsigned n_args = as.get_info().key.signature.size();
+               values.reserve(n_args);
+               for(unsigned i=0; i<n_args; ++i)
+                       values.push_back(as.get<A0>(i));
+               (dynamic_cast<L &>(l).*func)(values);
+       }
+
        virtual std::string get_signature() const
        {
                std::string result;
@@ -125,6 +148,11 @@ public:
                (dynamic_cast<L &>(l).*func)(st);
        }
 
+       virtual void execute(Loader &, const ArgumentStore &) const
+       {
+               throw std::logic_error("incompatible format");
+       }
+
        virtual std::string get_signature() const
        { return "*"; }
 };
@@ -146,6 +174,11 @@ public:
                (dynamic_cast<L &>(l).*func)(st.args[0].get<A0>(), st.args[1].get<A1>());
        }
 
+       virtual void execute(Loader &l, const ArgumentStore &as) const
+       {
+               (dynamic_cast<L &>(l).*func)(as.get<A0>(0), as.get<A1>(1));
+       }
+
        virtual std::string get_signature() const
        {
                std::string result;
@@ -172,6 +205,11 @@ public:
                (dynamic_cast<L &>(l).*func)(st.args[0].get<A0>(), st.args[1].get<A1>(), st.args[2].get<A2>());
        }
 
+       virtual void execute(Loader &l, const ArgumentStore &as) const
+       {
+               (dynamic_cast<L &>(l).*func)(as.get<A0>(0), as.get<A1>(1), as.get<A2>(2));
+       }
+
        virtual std::string get_signature() const
        {
                std::string result;
@@ -199,6 +237,11 @@ public:
                (dynamic_cast<L &>(l).*func)(st.args[0].get<A0>(), st.args[1].get<A1>(), st.args[2].get<A2>(), st.args[3].get<A3>());
        }
 
+       virtual void execute(Loader &l, const ArgumentStore &as) const
+       {
+               (dynamic_cast<L &>(l).*func)(as.get<A0>(0), as.get<A1>(1), as.get<A2>(2), as.get<A3>(3));
+       }
+
        virtual std::string get_signature() const
        {
                std::string result;
@@ -227,6 +270,11 @@ public:
                (dynamic_cast<L &>(l).*func)(st.args[0].get<A0>(), st.args[1].get<A1>(), st.args[2].get<A2>(), st.args[3].get<A3>(), st.args[4].get<A4>());
        }
 
+       virtual void execute(Loader &l, const ArgumentStore &as) const
+       {
+               (dynamic_cast<L &>(l).*func)(as.get<A0>(0), as.get<A1>(1), as.get<A2>(2), as.get<A3>(3), as.get<A4>(4));
+       }
+
        virtual std::string get_signature() const
        {
                std::string result;
@@ -256,6 +304,11 @@ public:
                dynamic_cast<typename L::Loader &>(l).get_object().*ptr0 = st.args[0].get<T0>();
        }
 
+       virtual void execute(Loader &l, const ArgumentStore &as) const
+       {
+               dynamic_cast<typename L::Loader &>(l).get_object().*ptr0 = as.get<T0>(0);
+       }
+
        virtual std::string get_signature() const
        { return std::string(1, TypeInfo<T0>::signature); }
 };
@@ -278,6 +331,12 @@ public:
                ldr.get_object().*ptr0 = &ldr.get_collection().template get<T0>(st.args[0].get<std::string>());
        }
 
+       virtual void execute(Loader &l, const ArgumentStore &as) const
+       {
+               typename L::Loader &ldr = dynamic_cast<typename L::Loader &>(l);
+               ldr.get_object().*ptr0 = &ldr.get_collection().template get<T0>(as.get<std::string>(0));
+       }
+
        virtual std::string get_signature() const
        { return std::string(1, TypeInfo<std::string>::signature); }
 };
@@ -302,6 +361,12 @@ public:
                dynamic_cast<typename L::Loader &>(l).get_object().*ptr1 = st.args[1].get<T1>();
        }
 
+       virtual void execute(Loader &l, const ArgumentStore &as) const
+       {
+               dynamic_cast<typename L::Loader &>(l).get_object().*ptr0 = as.get<T0>(0);
+               dynamic_cast<typename L::Loader &>(l).get_object().*ptr1 = as.get<T1>(1);
+       }
+
        virtual std::string get_signature() const
        {
                std::string result;