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88 lines
2.4 KiB
C++
88 lines
2.4 KiB
C++
/*=============================================================================
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Copyright (c) 2002 2004 2006 Joel de Guzman
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http://spirit.sourceforge.net/
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Use, modification and distribution is subject to the Boost Software
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License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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http://www.boost.org/LICENSE_1_0.txt)
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=============================================================================*/
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#include "./template_stack.hpp"
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#ifdef BOOST_MSVC
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#pragma warning(disable : 4355)
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#endif
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namespace quickbook
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{
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template_stack::template_stack()
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: scope(template_stack::parser(*this))
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, scopes()
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{
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scopes.push_front(template_scope());
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}
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template_symbol* template_stack::find(std::string const& symbol) const
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{
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for (template_scope const* i = &*scopes.begin(); i; i = i->parent_scope)
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{
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if (template_symbol* ts = boost::spirit::classic::find(i->symbols, symbol.c_str()))
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return ts;
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}
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return 0;
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}
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template_symbol* template_stack::find_top_scope(std::string const& symbol) const
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{
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return boost::spirit::classic::find(scopes.front().symbols, symbol.c_str());
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}
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template_symbols const& template_stack::top() const
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{
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BOOST_ASSERT(!scopes.empty());
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return scopes.front().symbols;
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}
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template_scope const& template_stack::top_scope() const
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{
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BOOST_ASSERT(!scopes.empty());
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return scopes.front();
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}
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// TODO: Should symbols defined by '[import]' use the current scope?
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bool template_stack::add(template_symbol const& ts)
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{
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BOOST_ASSERT(!scopes.empty());
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if (this->find_top_scope(ts.identifier)) {
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return false;
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}
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template_symbol symbol(ts);
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if(!ts.parent) symbol.parent = &top_scope();
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boost::spirit::classic::add(scopes.front().symbols, ts.identifier.c_str(),
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symbol);
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return true;
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}
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void template_stack::push()
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{
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template_scope const& old_front = scopes.front();
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scopes.push_front(template_scope());
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set_parent_scope(old_front);
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}
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void template_stack::pop()
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{
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scopes.pop_front();
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}
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void template_stack::set_parent_scope(template_scope const& parent)
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{
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scopes.front().parent_scope = &parent;
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}
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}
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