ff12404062
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@885349 13f79535-47bb-0310-9956-ffa450edef68
93 lines
3 KiB
C++
93 lines
3 KiB
C++
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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/* $Rev$ $Date$ */
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#ifndef tuscany_modcpp_hpp
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#define tuscany_modcpp_hpp
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/**
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* Evaluation functions used by mod-eval to evaluate implementation.cpp
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* component implementations.
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*/
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#include <string>
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#include <iostream>
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#include <fstream>
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#include "function.hpp"
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#include "list.hpp"
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#include "value.hpp"
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#include "debug.hpp"
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#include "monad.hpp"
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#include "dynlib.hpp"
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#include "cache.hpp"
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#include "../eval/driver.hpp"
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#include "../http/httpd.hpp"
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#include "mod-eval.hpp"
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namespace tuscany {
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namespace server {
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namespace modeval {
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namespace cpp {
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/**
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* Evaluate a C++ component implementation function.
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*/
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struct evalImplementation {
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const lib ilib;
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const ilambda impl;
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const list<value> px;
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evalImplementation(const lib& ilib, const ilambda& impl, const list<value>& px) : ilib(ilib), impl(impl), px(px) {
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}
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const failable<value, std::string> operator()(const value& func, const list<value>& params) const {
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debug(cons<value>(func, params), "modeval::cpp::evalImplementation::input");
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const failable<value, std::string> val = impl(func, append(params, px));
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debug(content(val), "modeval::cpp::evalImplementation::result");
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return val;
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}
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};
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/**
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* Read a C++ component implementation.
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*/
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const failable<ilambda, std::string> readLatestImplementation(const std::string path, const list<value>& px) {
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const failable<lib, std::string> ilib(dynlib(path));
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if (!hasContent(ilib))
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return mkfailure<ilambda, std::string>(reason(ilib));
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const failable<ilambda, std::string> impl(dynlambda<failable<value, std::string>(value, list<value>)>("eval", content(ilib)));
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if (!hasContent(impl))
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return impl;
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return ilambda(evalImplementation(content(ilib), content(impl), px));
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}
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const cached<failable<ilambda, std::string> > readImplementation(const std::string& path, const list<value>& px) {
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const lambda<failable<ilambda, std::string>(std::string, list<value>)> ri(readLatestImplementation);
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const lambda<unsigned long(std::string)> ft(latestFileTime);
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const std::string p(path + dynlibExt);
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return cached<failable<ilambda, std::string> >(curry(ri, p, px), curry(ft, p));
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}
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}
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}
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}
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}
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#endif /* tuscany_modcpp_hpp */
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