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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
/* $Rev$ $Date$ */
#ifndef tuscany_scdl_hpp
#define tuscany_scdl_hpp
/**
* SCDL read functions.
*/
#include "string.hpp"
#include "list.hpp"
#include "value.hpp"
#include "monad.hpp"
#include "xml.hpp"
namespace tuscany {
namespace scdl {
/**
* Returns a list of components in a composite.
*/
const list<value> components(const value& l) {
const list<value> cs = elementChildren("composite", l);
if (isNil(cs))
return cs;
return elementChildren("component", car(cs));
}
/**
* Returns a list of service promotions in a composite.
*/
const list<value> promotions(const value& l) {
const list<value> cs = elementChildren("composite", l);
if (isNil(cs))
return cs;
return elementChildren("service", car(cs));
}
/**
* Returns the target or a service promotion.
*/
const value promote(const value& l) {
return attributeValue("promote", l);
}
/**
* Returns the name of a component, service or reference.
*/
const value name(const value& l) {
return attributeValue("name", l);
}
/**
* Convert a list of elements to a name -> element assoc list.
*/
const list<value> nameToElementAssoc(const list<value>& l) {
if (isNil(l))
return l;
const value e(car(l));
return cons<value>(mklist<value>(name(e), e), nameToElementAssoc(cdr(l)));
}
/**
* Returns the scdl declaration with the given name.
*/
struct filterName {
const value n;
filterName(const value& n) : n(n) {
}
const bool operator()(const value& v) const {
return name(v) == n;
}
};
const value named(const value& name, const value& l) {
const list<value> c = filter<value>(filterName(name), l);
if (isNil(c))
return value();
return car(c);
}
/**
* Returns the implementation of a component.
*/
const bool filterImplementation(const value& v) {
return isElement(v) && contains(string(cadr<value>(v)), "implementation.");
}
const value implementation(const value& l) {
const list<value> n = filter<value>(filterImplementation, l);
if (isNil(n))
return value();
return car(n);
}
/**
* Returns the URI of a service, reference or implementation.
*/
const value uri(const value& l) {
return attributeValue("uri", l);
}
/**
* Returns true if a reference is declared as wired by impl.
*/
const bool wiredByImpl(const value& l) {
return attributeValue("wiredByImpl", l) == string("true");
}
/**
* Returns a list of services in a component.
*/
const list<value> services(const value& l) {
return elementChildren("service", l);
}
/**
* Returns a list of references in a component.
*/
const list<value> references(const value& l) {
return elementChildren("reference", l);
}
/**
* Returns a list of bindings in a service or reference.
*/
const bool filterBinding(const value& v) {
return isElement(v) && contains(string(cadr<value>(v)), "binding.");
}
const list<value> bindings(const value& l) {
return filter<value>(filterBinding, l);
}
/**
* Returns the target of a reference.
*/
const value bindingsTarget(const list<value>& l) {
if (isNil(l))
return value();
const value u = uri(car(l));
if (!isNil(u))
return u;
return bindingsTarget(cdr(l));
}
const value target(const value& l) {
const value target = attributeValue("target", l);
if (!isNil(target))
return target;
return bindingsTarget(bindings(l));
}
/**
* Convert a list of references to a reference name -> target assoc list.
*/
const list<value> referenceToTargetAssoc(const list<value>& r) {
if (isNil(r))
return r;
const value ref(car(r));
return cons<value>(mklist<value>(scdl::name(ref), scdl::target(ref)), referenceToTargetAssoc(cdr(r)));
}
/**
* Returns a list of properties in a component.
*/
const list<value> properties(const value& l) {
return elementChildren("property", l);
}
/**
* Returns the type of an implementation.
*/
const value implementationType(const value& l) {
return elementName(l);
}
/**
* Returns the type of a binding.
*/
const value bindingType(const value& l) {
return elementName(l);
}
/**
* Returns the value of a property.
*/
const value propertyValue(const value& l) {
return elementValue(l);
}
/**
* Returns the absolute path of a resource in a contribution.
*/
const string resourcePath(const string& contrib, const string& path) {
return c_str(path)[0] == '/'? path : contrib + path;
}
}
}
#endif /* tuscany_scdl_hpp */
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