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// file : CCF/IDL2/SemanticAction/Impl/Elements.hpp
// author : Boris Kolpackov <boris@dre.vanderbilt.edu>
// cvs-id : $Id$
#ifndef CCF_IDL2_SEMANTIC_ACTION_IMPL_ELEMENTS_HPP
#define CCF_IDL2_SEMANTIC_ACTION_IMPL_ELEMENTS_HPP
#include <stack>
#include "CCF/IDL2/SemanticGraph/Translation.hpp"
#include "CCF/IDL2/SemanticGraph/IntExpression.hpp"
#include "CCF/IDL2/SemanticAction/Elements.hpp"
/*
Design notes:
(1) I am using stack-based approach to handle cases like this:
struct A
{
struct B
{
struct C
{
...
} c;
} b;
};
Even though you can't write the same let's say for interface
I am still using stack approach for consistency and possible
meta-coding.
*/
namespace CCF
{
namespace IDL2
{
namespace SemanticAction
{
namespace Impl
{
//
//
//
class Context
{
public:
Context (bool trace,
SemanticGraph::TranslationUnit& tu,
CompilerElements::Context& parsing_context)
: trace_ (trace),
tu_ (tu),
parsing_context_ (parsing_context)
{
}
bool
trace ()
{
return trace_;
}
SemanticGraph::TranslationUnit&
tu () const
{
return tu_;
}
SemanticGraph::Scope&
scope () const
{
return *scope_;
}
void
scope (SemanticGraph::Scope& scope)
{
scope_ = &scope;
}
SemanticGraph::TranslationRegion&
region () const
{
return *region_;
}
void
region (SemanticGraph::TranslationRegion& r)
{
region_ = &r;
}
CompilerElements::Context&
parsing_context () const
{
return parsing_context_;
}
SemanticGraph::Path const&
file () const
{
return parsing_context_.get<SemanticGraph::Path> ("file-path");
}
public:
void
int_exp_push (SemanticGraph::IntExpression& e)
{
int_exp_stack_.push (&e);
}
SemanticGraph::IntExpression&
int_exp_pop ()
{
SemanticGraph::IntExpression& e (*int_exp_stack_.top ());
int_exp_stack_.pop ();
return e;
}
std::size_t
int_exp_size ()
{
return int_exp_stack_.size ();
}
void
int_exp_flush ()
{
while (int_exp_stack_.size ())
int_exp_stack_.pop ();
}
private:
bool trace_;
SemanticGraph::TranslationUnit& tu_;
SemanticGraph::TranslationRegion* region_;
SemanticGraph::Scope* scope_;
CompilerElements::Context& parsing_context_;
std::stack<SemanticGraph::IntExpression*> int_exp_stack_;
private:
Context (Context const&);
void operator= (Context const&);
};
//
//
//
class Base
{
protected:
virtual
~Base ()
{
}
Base (Context& c)
: ctx (c)
{
}
protected:
class Resolve {};
template <typename Id>
struct ExceptionTemplate : Resolve
{
explicit
ExceptionTemplate (SemanticGraph::ScopedName name)
: name_ (name)
{
}
SemanticGraph::ScopedName
name () const
{
return name_;
}
private:
SemanticGraph::ScopedName name_;
};
struct NotFound : Resolve {};
class WrongType_ {};
typedef ExceptionTemplate<WrongType_> WrongType;
class NotUnique : Resolve {};
class NotDefined_ {};
typedef ExceptionTemplate<NotDefined_> NotDefined;
class NotComplete_ {};
typedef ExceptionTemplate<NotComplete_> NotComplete;
struct Flags
{
enum Value
{
none = 0x00,
complete = 0x01,
defined = 0x02
};
};
template <typename T>
T&
resolve (SemanticGraph::ScopedName const& from,
SemanticGraph::Name const& name,
Flags::Value flags = Flags::none)
throw (NotFound, NotUnique, WrongType, NotDefined, NotComplete);
class AlreadyInherited_ {};
typedef ExceptionTemplate<AlreadyInherited_> AlreadyInherited;
class AlreadySupported_ {};
typedef ExceptionTemplate<AlreadySupported_> AlreadySupported;
template<typename I>
void
check_inheritance (I begin, I end, SemanticGraph::Nameable& t)
throw (AlreadyInherited);
template<typename I>
void
check_support (I begin, I end, SemanticGraph::Nameable& t)
throw (AlreadySupported);
protected:
Context& ctx;
};
//
//
//
template <typename T>
class ScopeBase : public Base
{
protected:
ScopeBase (Context& c)
: Base (c)
{
}
protected:
T&
now () const
{
return *now_;
}
void
now (T& t)
{
now_ = &t;
}
void
push (SemanticGraph::Scope& t)
{
stack_.push (&t);
}
void
pop ()
{
stack_.pop ();
}
SemanticGraph::Scope&
top ()
{
return *stack_.top ();
}
private:
T* now_;
std::stack<SemanticGraph::Scope*> stack_;
};
//
//
//
class NotFound {};
class NotUnique {};
SemanticGraph::Nameables
resolve (SemanticGraph::TranslationUnit& tu,
SemanticGraph::ScopedName const& from,
SemanticGraph::Name const& name) throw (NotFound);
SemanticGraph::Nameable*
lookup (SemanticGraph::TranslationUnit& tu,
SemanticGraph::Scope& in,
SemanticGraph::SimpleName const& name) throw (NotUnique);
}
}
}
}
#include "CCF/IDL2/SemanticAction/Impl/Elements.tpp"
#endif // CCF_IDL2_SEMANTIC_ACTION_IMPL_ELEMENTS_HPP
|
