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/* -*- C++ -*- */
//=============================================================================
/**
* @file be_visitor_context.h
*
* $Id$
*
* This class serves to provide all the necessary context information to the
* visitor as it generates code. This may include the scope inside which the
* code is generated, the output file that is being used, and others. This
* context information will be passed to the abstract/concrete visitor
* factory which in turn will use it to construct the right visitor.
*
*
* @author Aniruddha Gokhale
*/
//=============================================================================
#ifndef TAO_BE_VISITOR_CONTEXT_H
#define TAO_BE_VISITOR_CONTEXT_H
#include "ast_visitor_context.h"
#include "fe_utils.h"
#include "be_codegen.h"
class TAO_OutStream;
class be_decl;
class be_interface;
class be_typedef;
class be_attribute;
class be_scope;
// When interface is defined as macro redefine it as aceinterface
#if defined (interface)
# define aceinterface interface
# undef interface
#endif /* interface */
class be_visitor_context : public ast_visitor_context
{
public:
/// default constructor
be_visitor_context (void);
/// default constructor
be_visitor_context (const be_visitor_context &ctx);
/// destructor
~be_visitor_context (void);
/// assignment operator
be_visitor_context &operator= (const be_visitor_context &ctx);
// =helpers
/// reset the context
void reset (void);
/// set the output stream
void stream (TAO_OutStream *os);
/// get the stream
TAO_OutStream *stream (void);
/// set the scope
void scope (be_scope *scope);
/// get the scope in which code will be generated
be_scope *scope (void);
/// current node being visited
void node (be_decl *node);
/// node being visited
be_decl *node (void);
/// code generation state
void state (TAO_CodeGen::CG_STATE);
/// return the code generation state
TAO_CodeGen::CG_STATE state (void);
/// code generation state
void sub_state (TAO_CodeGen::CG_SUB_STATE);
/// return the code generation state
TAO_CodeGen::CG_SUB_STATE sub_state (void);
/// set the alias node (if any)
void alias (be_typedef *node);
/// return the aliased node (if any)
be_typedef *alias (void);
/// set the typedef node (if any)
void tdef (be_typedef *node);
/// return the typedef node (if any)
be_typedef *tdef (void);
/// set the attribute node if any
void attribute (be_attribute *attr);
/// get the attribute node
be_attribute *attribute (void);
/// is it the special ctor for exceptions?
void exception (bool);
/// is it the special ctor for exceptions?
bool exception (void);
/// scope supoorts generation of comma after each element
void comma (bool);
/// are we supposed to generate a comma?
bool comma (void);
/**
* In some cases we need to generate the objects of one interface as
* members of a derived visitor (the TIE classes are a good
* example). This field is use to hold the interface where we are
* *generating* code, as opposed to the interfaces where the methods
* or structures are defined.
*/
be_interface *interface (void) const;
void interface (be_interface *);
/// Accessor for the member.
ACE_CString &port_prefix (void);
/// return the export macro currently in force
const char *export_macro (void) const;
/// if anyop export macro is empty, check stub.
const char *non_null_export_macro (void) const;
private:
/// code generation state
TAO_CodeGen::CG_STATE state_;
/// code generation state
TAO_CodeGen::CG_SUB_STATE sub_state_;
/// current output stream
TAO_OutStream *os_;
/// current scope in which code is generated
be_scope *scope_;
/// current node
be_decl *node_;
/// aliased node used as a scoped name to define IDL types.
be_typedef *alias_;
/// typedef node
be_typedef *tdef_;
/// attribute node stored here while generating its code
be_attribute *attr_;
/// is it the special ctor for exceptions?
bool exception_;
/// whether scope should generate a comma after every element
bool comma_;
/// See the method declaration above.
be_interface *interface_;
/// Used in enough visitors to put it here.
ACE_CString port_prefix_;
};
#if defined (interface)
# define interface aceinterface
#endif /* interface */
#endif /* BE_VISITOR_CONTEXT_H */
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