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118 lines
3.5 KiB
C++
118 lines
3.5 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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#include <cassert>
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#include "files.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_symbol::template_symbol(
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std::string const& identifier_,
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std::vector<std::string> const& params_,
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value const& content_,
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template_scope const* lexical_parent_)
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: identifier(identifier_)
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, params(params_)
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, content(content_)
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, lexical_parent(lexical_parent_)
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{
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assert(
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content.get_tag() == template_tags::block ||
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content.get_tag() == template_tags::phrase ||
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content.get_tag() == template_tags::snippet);
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}
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template_stack::template_stack()
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: scope(template_stack::parser(*this)), scopes(), parent_1_4(0)
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{
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scopes.push_front(template_scope());
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parent_1_4 = &scopes.front();
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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;
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i = i->parent_scope) {
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if (template_symbol* ts =
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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(
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std::string const& symbol) const
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{
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return boost::spirit::classic::find(
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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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bool template_stack::add(template_symbol const& ts)
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{
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BOOST_ASSERT(!scopes.empty());
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BOOST_ASSERT(ts.lexical_parent);
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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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boost::spirit::classic::add(
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scopes.front().symbols, ts.identifier.c_str(), ts);
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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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scopes.front().parent_1_4 = parent_1_4;
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scopes.front().parent_scope = &old_front;
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parent_1_4 = &scopes.front();
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}
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void template_stack::pop()
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{
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parent_1_4 = scopes.front().parent_1_4;
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scopes.pop_front();
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}
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void template_stack::start_template(template_symbol const* symbol)
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{
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// Quickbook 1.4-: When expanding the template continue to use the
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// current scope (the dynamic scope).
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// Quickbook 1.5+: Use the scope the template was defined in
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// (the static scope).
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if (symbol->content.get_file()->version() >= 105u) {
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parent_1_4 = scopes.front().parent_1_4;
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scopes.front().parent_scope = symbol->lexical_parent;
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}
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else {
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scopes.front().parent_scope = scopes.front().parent_1_4;
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}
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}
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}
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