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/********************* */
/*! \file declaration_scope.cpp
** \verbatim
** Original author: cconway
** Major contributors: mdeters
** Minor contributors (to current version): dejan, ajreynol
** This file is part of the CVC4 prototype.
** Copyright (c) 2009, 2010, 2011 The Analysis of Computer Systems Group (ACSys)
** Courant Institute of Mathematical Sciences
** New York University
** See the file COPYING in the top-level source directory for licensing
** information.\endverbatim
**
** \brief Convenience class for scoping variable and type
** declarations (implementation).
**
** Convenience class for scoping variable and type declarations
** (implementation).
**/
#include "expr/declaration_scope.h"
#include "expr/expr.h"
#include "expr/type.h"
#include "expr/expr_manager_scope.h"
#include "context/cdmap.h"
#include "context/cdset.h"
#include "context/context.h"
#include <string>
#include <utility>
using namespace CVC4;
using namespace CVC4::context;
using namespace std;
namespace CVC4 {
DeclarationScope::DeclarationScope() :
d_context(new Context),
d_exprMap(new(true) CDMap<std::string, Expr, StringHashFunction>(d_context)),
d_typeMap(new(true) CDMap<std::string, pair<vector<Type>, Type>, StringHashFunction>(d_context)),
d_functions(new(true) CDSet<Expr, ExprHashFunction>(d_context)) {
}
DeclarationScope::~DeclarationScope() {
d_exprMap->deleteSelf();
d_typeMap->deleteSelf();
d_functions->deleteSelf();
delete d_context;
}
void DeclarationScope::bind(const std::string& name, Expr obj) throw(AssertionException) {
CheckArgument(!obj.isNull(), obj, "cannot bind to a null Expr");
ExprManagerScope ems(obj);
d_exprMap->insert(name, obj);
}
void DeclarationScope::bindDefinedFunction(const std::string& name, Expr obj) throw(AssertionException) {
CheckArgument(!obj.isNull(), obj, "cannot bind to a null Expr");
ExprManagerScope ems(obj);
d_exprMap->insert(name, obj);
d_functions->insert(obj);
}
bool DeclarationScope::isBound(const std::string& name) const throw() {
return d_exprMap->find(name) != d_exprMap->end();
}
bool DeclarationScope::isBoundDefinedFunction(const std::string& name) const throw() {
CDMap<std::string, Expr, StringHashFunction>::iterator found =
d_exprMap->find(name);
return found != d_exprMap->end() && d_functions->contains((*found).second);
}
bool DeclarationScope::isBoundDefinedFunction(Expr func) const throw() {
return d_functions->contains(func);
}
Expr DeclarationScope::lookup(const std::string& name) const throw(AssertionException) {
return (*d_exprMap->find(name)).second;
}
void DeclarationScope::bindType(const std::string& name, Type t) throw() {
d_typeMap->insert(name, make_pair(vector<Type>(), t));
}
void DeclarationScope::bindType(const std::string& name,
const std::vector<Type>& params,
Type t) throw() {
if(Debug.isOn("sort")) {
Debug("sort") << "bindType(" << name << ", [";
if(params.size() > 0) {
copy( params.begin(), params.end() - 1,
ostream_iterator<Type>(Debug("sort"), ", ") );
Debug("sort") << params.back();
}
Debug("sort") << "], " << t << ")" << endl;
}
d_typeMap->insert(name, make_pair(params, t));
}
bool DeclarationScope::isBoundType(const std::string& name) const throw() {
return d_typeMap->find(name) != d_typeMap->end();
}
Type DeclarationScope::lookupType(const std::string& name) const throw(AssertionException) {
pair<vector<Type>, Type> p = (*d_typeMap->find(name)).second;
Assert(p.first.size() == 0,
"type constructor arity is wrong: "
"`%s' requires %u parameters but was provided 0",
name.c_str(), p.first.size());
return p.second;
}
Type DeclarationScope::lookupType(const std::string& name,
const std::vector<Type>& params) const throw(AssertionException) {
pair<vector<Type>, Type> p = (*d_typeMap->find(name)).second;
Assert(p.first.size() == params.size(),
"type constructor arity is wrong: "
"`%s' requires %u parameters but was provided %u",
name.c_str(), p.first.size(), params.size());
if(p.first.size() == 0) {
Assert(p.second.isSort());
return p.second;
}
if(p.second.isSortConstructor()) {
if(Debug.isOn("sort")) {
Debug("sort") << "instantiating using a sort constructor" << endl;
Debug("sort") << "have formals [";
copy( p.first.begin(), p.first.end() - 1,
ostream_iterator<Type>(Debug("sort"), ", ") );
Debug("sort") << p.first.back() << "]" << endl
<< "parameters [";
copy( params.begin(), params.end() - 1,
ostream_iterator<Type>(Debug("sort"), ", ") );
Debug("sort") << params.back() << "]" << endl
<< "type ctor " << name << endl
<< "type is " << p.second << endl;
}
Type instantiation =
SortConstructorType(p.second).instantiate(params);
Debug("sort") << "instance is " << instantiation << endl;
return instantiation;
} else if(p.second.isDatatype()) {
Assert( DatatypeType(p.second).isParametric() );
return DatatypeType(p.second).instantiate(params);
} else {
if(Debug.isOn("sort")) {
Debug("sort") << "instantiating using a sort substitution" << endl;
Debug("sort") << "have formals [";
copy( p.first.begin(), p.first.end() - 1,
ostream_iterator<Type>(Debug("sort"), ", ") );
Debug("sort") << p.first.back() << "]" << endl
<< "parameters [";
copy( params.begin(), params.end() - 1,
ostream_iterator<Type>(Debug("sort"), ", ") );
Debug("sort") << params.back() << "]" << endl
<< "type ctor " << name << endl
<< "type is " << p.second << endl;
}
Type instantiation = p.second.substitute(p.first, params);
Debug("sort") << "instance is " << instantiation << endl;
return instantiation;
}
}
size_t DeclarationScope::lookupArity(const std::string& name) {
pair<vector<Type>, Type> p = (*d_typeMap->find(name)).second;
return p.first.size();
}
void DeclarationScope::popScope() throw(ScopeException) {
if( d_context->getLevel() == 0 ) {
throw ScopeException();
}
d_context->pop();
}
void DeclarationScope::pushScope() throw() {
d_context->push();
}
size_t DeclarationScope::getLevel() const throw() {
return d_context->getLevel();
}
}/* CVC4 namespace */
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