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/* -*- c++ -*- */
//=============================================================================
/**
* @file be_helper.h
*
* Defines the abstract class for outputting the C++ mapping. This is a
* helper class to the singleton TAO_CodeGen class
*
* @author Aniruddha Gokhale Improvements by Carlos O'Ryan
*/
//=============================================================================
#ifndef TAO_BE_OUTSTRM_H
#define TAO_BE_OUTSTRM_H
#include "ace/CDR_Base.h"
#include "TAO_IDL3_TO_IDL2_BE_Export.h"
class Identifier;
class UTL_IdList;
class AST_Expression;
// a dummy structure to inform TAO_OutStream's << operator to put a newline
// and use the current indentation for the succeeding line
struct TAO_IDL3_TO_IDL2_BE_Export TAO_NL
{
public:
TAO_NL (void);
};
/**
* Operates like a manipulator, increasing the indentation level.
*
* Increase the indentation level, if the "do_now" parameter is
* not zero then the <indent> method is called on the stream.
*/
struct TAO_IDL3_TO_IDL2_BE_Export TAO_INDENT
{
TAO_INDENT (int do_now = 0);
const int do_now_;
};
/**
* Operates like a manipulator, decreasing the indentation level.
*
* Decrease the indentation level, if the "do_now" parameter is
* not zero then the <indent> method is called on the stream.
*/
struct TAO_IDL3_TO_IDL2_BE_Export TAO_UNINDENT
{
TAO_UNINDENT (int do_now = 0);
const int do_now_;
};
extern TAO_IDL3_TO_IDL2_BE_Export const TAO_NL be_nl;
extern TAO_IDL3_TO_IDL2_BE_Export const TAO_INDENT be_idt;
extern TAO_IDL3_TO_IDL2_BE_Export const TAO_INDENT be_idt_nl;
extern TAO_IDL3_TO_IDL2_BE_Export const TAO_UNINDENT be_uidt;
extern TAO_IDL3_TO_IDL2_BE_Export const TAO_UNINDENT be_uidt_nl;
/**
* @class TAO_OutStream
*
* Defines an interface by which the backend code generator can
* print its output to the underlying I/O handle. This is a
* helper class that will be used by the TAO_CodeGen
* class. However, this is an abstract class and classes that
* understand specific front ends must derive from this class.
*/
class TAO_IDL3_TO_IDL2_BE_Export TAO_OutStream
{
public:
/// constructor.
TAO_OutStream (void);
/// destructor.
virtual ~TAO_OutStream (void);
/// open the underlying low-level handle for output.
int open (const char *fname);
/// Return the underlying lowlevel file pointer.
FILE *file (void);
/// increment the indentation level and by default actually indent the output
/// accordingly
int incr_indent (unsigned short flag = 1);
/// decrease the indentation level and by default actually indent the output
/// accordingly
int decr_indent (unsigned short flag = 1);
/// reset indentation level to 0
int reset (void);
/// indent starting next line
int indent (void);
/// put a newline and indent on the next line
int nl (void);
/// "printf" style variable argument print
int print (const char *format, ...);
void gen_ifndef_string (const char *fname,
const char *prefix,
const char *suffix);
// =overloaded operators
/// output the char string and return a reference to ourselves
TAO_OutStream &operator<< (const char *str);
/// output the integer and return a reference to ourselves
TAO_OutStream &operator<< (const ACE_CDR::UShort num);
/// output the integer and return a reference to ourselves
TAO_OutStream &operator<< (const ACE_CDR::Short num);
/// output the integer and return a reference to ourselves
TAO_OutStream &operator<< (const ACE_CDR::ULong num);
/// output the integer and return a reference to ourselves
TAO_OutStream &operator<< (const ACE_CDR::Long num);
#if defined (ACE_WIN64)
/// output the integer and return a reference to ourselves
TAO_OutStream &operator<< (const ACE_CDR::ULongLong num);
/// output the integer and return a reference to ourselves
TAO_OutStream &operator<< (const ACE_CDR::LongLong num);
#endif /* ACE_WIN64 */
/// output the integer and return a reference to ourselves
TAO_OutStream &operator<< (const unsigned long num);
/// output the integer and return a reference to ourselves
TAO_OutStream &operator<< (const long num);
// = MANIPULATORS
TAO_OutStream &operator<< (const TAO_NL& nl);
TAO_OutStream &operator<< (const TAO_INDENT& i);
TAO_OutStream &operator<< (const TAO_UNINDENT& i);
// The following will be provided by specialized classes.
TAO_OutStream &operator<< (Identifier *id);
TAO_OutStream &operator<< (AST_Expression *expr);
// Provided by specialized classes.
virtual TAO_OutStream &print (Identifier *id) = 0;
virtual TAO_OutStream &print (AST_Expression *idl) = 0;
protected:
/// The underlying low-level I/O handle.
FILE *fp_;
/// indentation level
int indent_level_;
};
#endif // if !defined
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