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/* $Id$
* WarnUnused: Visitor to emit a warning if a variable/constant/signal is
* unused.
*
* Copyright (C) 2008-2009 FAUmachine Team <info@faumachine.org>.
* This program is free software. You can redistribute it and/or modify it
* under the terms of the GNU General Public License, either version 2 of
* the License, or (at your option) any later version. See COPYING.
*/
#include "frontend/visitor/WarnUnused.hpp"
#include "frontend/ast/ValDeclaration.hpp"
#include "frontend/reporting/ErrorRegistry.hpp"
namespace ast {
void
WarnUnused::process(ValDeclaration &node)
{
const char *kind = NULL;
if (node.usage != ValDeclaration::USAGE_NONE) {
return;
}
switch (node.storageClass) {
case ValDeclaration::OBJ_CLASS_SIGNAL:
kind = "signal";
break;
case ValDeclaration::OBJ_CLASS_VARIABLE:
kind = "variable";
break;
case ValDeclaration::OBJ_CLASS_CONSTANT:
/* skip */
return;
case ValDeclaration::OBJ_CLASS_UNSPECIFIED:
assert(false);
break;
}
assert(node.name != NULL);
std::string msg = std::string("Unused ");
msg += kind;
msg += " '";
msg += *node.name;
msg += "'.";
CompileError *ce = new CompileError(node, msg);
/* FIXME add a warning, not an error */
ErrorRegistry::addWarning(ce);
}
};
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