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/*
* Copyright (c) 2003-2017, 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;
empty_scope_t * scope_t::empty_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 << " in " << this);
if (! symbols)
symbols = symbol_map();
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,
_f("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)
{
if (symbols) {
DEBUG("scope.symbols", "Looking for '" << name << "' in " << this);
symbol_map::const_iterator i = symbols->find(symbol_t(kind, name));
if (i != symbols->end()) {
DEBUG("scope.symbols", "Found '" << name << "' in " << this);
return (*i).second;
}
}
return child_scope_t::lookup(kind, name);
}
value_t& call_scope_t::resolve(const std::size_t index,
value_t::type_t context,
const bool required)
{
if (index >= args.size())
throw_(calc_error, _("Too few arguments to function"));
value_t& value(args[index]);
if (value.is_any()) {
context_scope_t scope(*this, context, required);
value = as_expr(value)->calc(scope, locus, depth);
if (required && ! value.is_type(context))
throw_(calc_error, _f("Expected %1% for argument %2%, but received %3%")
% value.label(context) % index % value.label());
}
return value;
}
} // namespace ledger
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