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// file : CCF/IDL2/SemanticAction/Impl/Interface.hpp
// author : Boris Kolpackov <boris@dre.vanderbilt.edu>
// cvs-id : $Id$
#ifndef CCF_IDL2_SEMANTIC_ACTION_IMPL_INTERFACE_HPP
#define CCF_IDL2_SEMANTIC_ACTION_IMPL_INTERFACE_HPP
#include "CCF/IDL2/SemanticAction/Impl/Elements.hpp"
#include "CCF/IDL2/SemanticAction/Interface.hpp"
namespace CCF
{
namespace IDL2
{
namespace SemanticAction
{
namespace Impl
{
//
//
//
class Interface : public virtual SemanticAction::Interface,
public virtual ScopeBase<SyntaxTree::InterfaceDeclPtr>
{
public:
virtual
~Interface () throw () {}
Interface (bool trace,
SyntaxTree::ScopePtr& scope)
: ScopeBase<SyntaxTree::InterfaceDeclPtr> (scope),
trace_ (trace),
name_ ("::") //@@ this is dirty
{
}
virtual void
begin_abstract (SimpleIdentifierPtr const& id)
{
if (trace_) cerr << "abstract interface " << id << endl;
qualifier_ = Qualifier::ABSTRACT;
name_ = SyntaxTree::SimpleName (id->lexeme ());
}
virtual void
begin_local (SimpleIdentifierPtr const& id)
{
if (trace_) cerr << "local interface " << id << endl;
qualifier_ = Qualifier::LOCAL;
name_ = SyntaxTree::SimpleName (id->lexeme ());
}
virtual void
begin_unconstrained (SimpleIdentifierPtr const& id)
{
if (trace_) cerr << "unconstrained interface " << id << endl;
qualifier_ = Qualifier::UNCONSTRAINED;
name_ = SyntaxTree::SimpleName (id->lexeme ());
}
virtual void
inherits (IdentifierPtr const& id)
{
using namespace SyntaxTree;
if (trace_) cerr << " inherits: " << id << endl;
Name name (id->lexeme ());
struct InheritancePredicate : public DeclarationTable::ResolvePredicate
{
InheritancePredicate (Qualifier::Value q) : q_ (q) {}
struct IncompatibleType :
public DeclarationTable::ResolutionFailure
{
IncompatibleType (std::string const& t) : type (t) {}
std::string type;
};
virtual bool
test (DeclarationPtr const& d) const throw (IncompatibleType)
{
bool passed = false;
switch (q_)
{
case Qualifier::UNCONSTRAINED:
{
if (d->is_a<AbstractInterfaceDecl> () ||
d->is_a<UnconstrainedInterfaceDecl> ()) passed = true;
break;
}
case Qualifier::LOCAL:
{
if (d->is_a<LocalInterfaceDecl> () ||
d->is_a<AbstractInterfaceDecl> () ||
d->is_a<UnconstrainedInterfaceDecl> ()) passed = true;
break;
}
case Qualifier::ABSTRACT:
{
if (d->is_a<AbstractInterfaceDecl> ()) passed = true;
break;
}
}
if (!passed) throw IncompatibleType (d->declaration_class ());
return d->dynamic_type<TypeDecl> ()->defined ();
}
private:
Qualifier::Value q_;
} p (qualifier_);
try
{
ScopedName sn = scope_->table ().resolve (
name,
scope_->name (),
scope_->peek_order (),
p);
if (inherits_.insert (sn).second == false)
{
cerr << "error: invalid inheritance specification" << endl;
cerr << "directly inheriting from interface \'"
<< sn << "\' more than once is illegal" << endl;
}
}
catch (InheritancePredicate::IncompatibleType const& e)
{
cerr << "error: invalid inheritance specification" << endl;
cerr << "inheritance of ";
switch (qualifier_)
{
case Qualifier::UNCONSTRAINED:
{
cerr << "unconstrained ";
break;
}
case Qualifier::LOCAL:
{
cerr << "local ";
break;
}
case Qualifier::ABSTRACT:
{
cerr << "abstract ";
break;
}
}
cerr << "interface \'" << name_ <<"\' from "
<< e.type << " \'" << name << "\' is illegal" << endl;
}
catch (DeclarationTable::NameNotFound const&)
{
cerr << "error: invalid inheritance specification" << endl;
cerr << "no interface with name \'"
<< name << "\' visible from scope \'"
<< scope_->name () << "\'" << endl;
}
catch (DeclarationTable::PredicateNotMet const&)
{
cerr << "error: invalid inheritance specification" << endl;
cerr << "no defined interface with name \'"
<< name << "\' visible from scope \'"
<< scope_->name () << "\'" << endl;
cerr << "inheritance from forward-declared interface is illegal"
<< endl;
}
}
virtual void
open_scope ()
{
if (trace_) cerr << "scope open" << endl;
using namespace SyntaxTree;
InterfaceDefPtr def;
switch (qualifier_)
{
case Qualifier::UNCONSTRAINED:
{
def = new UnconstrainedInterfaceDef (name_, scope_, inherits_);
break;
}
case Qualifier::LOCAL:
{
def = new LocalInterfaceDef (name_, scope_, inherits_);
break;
}
case Qualifier::ABSTRACT:
{
def = new AbstractInterfaceDef (name_, scope_, inherits_);
break;
}
}
scope_->insert (def);
push (def);
scope_ = def;
name_ = SimpleName ("::"); //indicate that we are done
inherits_.clear ();
}
virtual void
close_scope ()
{
scope_ = scope_->scope ();
if (trace_) cerr << "scope close" << endl;
}
virtual void
end ()
{
using namespace SyntaxTree;
if (trace_) cerr << "end" << endl;
if (name_ != SimpleName ("::"))
{
InterfaceDeclPtr decl;
switch (qualifier_)
{
case Qualifier::UNCONSTRAINED:
{
decl = new UnconstrainedInterfaceForwardDecl (name_, scope_);
break;
}
case Qualifier::LOCAL:
{
decl = new LocalInterfaceForwardDecl (name_, scope_);
break;
}
case Qualifier::ABSTRACT:
{
decl = new AbstractInterfaceForwardDecl (name_, scope_);
break;
}
}
scope_->insert (decl);
}
else
{
pop ();
}
}
private:
struct Qualifier
{
enum Value
{
ABSTRACT,
LOCAL,
UNCONSTRAINED
};
};
bool trace_;
Qualifier::Value qualifier_;
SyntaxTree::SimpleName name_;
SyntaxTree::ScopedNameSet inherits_;
};
}
}
}
}
#endif // CCF_IDL2_SEMANTIC_ACTION_IMPL_INTERFACE_HPP
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