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/*
* Copyright (c) 2003-2009, John Wiegley. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of New Artisans LLC nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <system.hh>
#include "scope.h"
namespace ledger {
scope_t * scope_t::default_scope = NULL;
void symbol_scope_t::define(const symbol_t::kind_t kind,
const string& name, expr_t::ptr_op_t def)
{
DEBUG("scope.symbols", "Defining '" << name << "' = " << def);
std::pair<symbol_map::iterator, bool> result
= symbols.insert(symbol_map::value_type(symbol_t(kind, name, def), def));
if (! result.second) {
symbol_map::iterator i = symbols.find(symbol_t(kind, name));
assert(i != symbols.end());
symbols.erase(i);
result = symbols.insert(symbol_map::value_type(symbol_t(kind, name, def),
def));
if (! result.second)
throw_(compile_error,
_("Redefinition of '%1' in the same scope") << name);
}
}
expr_t::ptr_op_t symbol_scope_t::lookup(const symbol_t::kind_t kind,
const string& name)
{
symbol_map::const_iterator i = symbols.find(symbol_t(kind, name));
if (i != symbols.end())
return (*i).second;
return child_scope_t::lookup(kind, name);
}
} // namespace ledger
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