mirror of
https://github.com/jezhiggins/arabica
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112 lines
2.9 KiB
C++
112 lines
2.9 KiB
C++
#ifndef ARABICA_XSLT_CHOOSE_HPP
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#define ARABICA_XSLT_CHOOSE_HPP
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#include "xslt_item.hpp"
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#include "xslt_if.hpp"
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namespace Arabica
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{
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namespace XSLT
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{
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template<class stringT, class adaptorT>
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class When : public ItemContainer<stringT, adaptorT>
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{
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public:
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typedef stringT string_type;
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typedef adaptorT string_adaptor;
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When(Arabica::XPath::XPathExpressionPtr<string_type, string_adaptor> test) :
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test_(test)
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{
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} // When
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virtual ~When() { }
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bool is_met(const DOM::Node<string_type, string_adaptor>& node,
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ExecutionContext<string_type, string_adaptor>& context) const
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{
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return test_->evaluateAsBool(node, context.xpathContext());
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} // is_met
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virtual void execute(const DOM::Node<string_type, string_adaptor>& node,
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ExecutionContext<string_type, string_adaptor>& context) const
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{
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this->execute_children(node, context);
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} // execute
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private:
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Arabica::XPath::XPathExpressionPtr<string_type, string_adaptor> test_;
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}; // class When
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template<class stringT, class adaptorT>
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class Otherwise : public ItemContainer<stringT, adaptorT>
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{
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public:
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typedef stringT string_type;
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typedef adaptorT string_adaptor;
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virtual void execute(const DOM::Node<string_type, string_adaptor>& node,
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ExecutionContext<string_type, string_adaptor>& context) const
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{
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this->execute_children(node, context);
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} // execute
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}; // class Otherwise
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template<class stringT, class adaptorT>
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class Choose : public Item<stringT, adaptorT>
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{
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public:
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typedef stringT string_type;
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typedef adaptorT string_adaptor;
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Choose() :
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when_(),
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otherwise_(0)
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{
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} // Choose
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virtual ~Choose()
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{
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for(typename WhenList::const_iterator w = when_.begin(), e = when_.end(); w != e; ++w)
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delete (*w);
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delete otherwise_;
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} // ~Choose
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virtual void execute(const DOM::Node<string_type, string_adaptor>& node,
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ExecutionContext<string_type, string_adaptor>& context) const
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{
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ChainStackFrame<string_type, string_adaptor> frame(context);
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for(typename WhenList::const_iterator w = when_.begin(), e = when_.end(); w != e; ++w)
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if((*w)->is_met(node, context))
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{
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(*w)->execute(node, context);
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return;
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} // if ...
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if(otherwise_)
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otherwise_->execute(node, context);
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} // execute
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public:
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void add_when(When<string_type, string_adaptor>* child)
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{
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when_.push_back(child);
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} // add_when
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void set_otherwise(Otherwise<string_type, string_adaptor>* otherwise)
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{
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otherwise_ = otherwise;
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} // set_otherwise
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private:
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typedef std::vector<When<string_type, string_adaptor>*> WhenList;
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WhenList when_;
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Otherwise<string_type, string_adaptor>* otherwise_;
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}; // class Choose
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} // namespace XSLT
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} // namespace Arabica
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#endif
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