/*

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Copyright 1992, 1993, 1994 Sun Microsystems, Inc.  Printed in the United
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This product is protected by copyright and distributed under the following
license restricting its use.

The Interface Definition Language Compiler Front End (CFE) is made
available for your use provided that you include this license and copyright
notice on all media and documentation and the software program in which
this product is incorporated in whole or part. You may copy and extend
functionality (but may not remove functionality) of the Interface
Definition Language CFE without charge, but you are not authorized to
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distribution of Interface Definition Language CFE as permitted herein.

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and documentation for the Interface Definition Language CFE.

INTERFACE DEFINITION LANGUAGE CFE IS PROVIDED AS IS WITH NO WARRANTIES OF
ANY KIND INCLUDING THE WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS
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 */

/*
 * ast_constant.cc - Implementation of class AST_Constant
 *
 * AST_Constant nodes denote IDL constant declarations.
 * AST_Constants have a value (an AST_Expression) and a value type
 * (a value from the enum AST_Expression::ExprType).
 * AST_Constant has two constructors, one for use in creating constants
 * and the other for use in creating enumerators (see the class
 * AST_EnumVal)
 */

#include	<idl.hh>
#include	<idl_extern.hh>

/*
 * Static functions
 */

/*
 * Convert a value from the enum AST_Expression::ExprType to a char *
 */
static char *
exprtype_to_string(AST_Expression::ExprType et)
{
  switch (et) {
  case AST_Expression::EV_short:
    return "short";
  case AST_Expression::EV_ushort:
    return "unsigned short";
  case AST_Expression::EV_long:
    return "long";
  case AST_Expression::EV_ulong:
    return "unsigned long";
  case AST_Expression::EV_longlong:
    return "long long";
  case AST_Expression::EV_ulonglong:
    return "unsigned long long";
  case AST_Expression::EV_float:
    return "float";
  case AST_Expression::EV_double:
    return "double";
  case AST_Expression::EV_longdouble:
    return "long double";
  case AST_Expression::EV_char:
    return "char";
  case AST_Expression::EV_wchar:
    return "wchar";
  case AST_Expression::EV_octet:
    return "octet";
  case AST_Expression::EV_bool:
    return "boolean";
  case AST_Expression::EV_string:
    return "string";
  case AST_Expression::EV_wstring:
    return "wstring";
  case AST_Expression::EV_any:
    return "any";
  case AST_Expression::EV_void:
    return "void";
  case AST_Expression::EV_none:
    return "none";
  }
  return 0; // for MSVC++ 4.2
}

/*
 * Constructor(s) and destructor
 */

/*
 * Default constructor
 */
AST_Constant::AST_Constant()
	    : pd_constant_value(NULL), pd_et(AST_Expression::EV_none)
{
}

/*
 * Used in constructing AST_EnumVal nodes
 */
AST_Constant::AST_Constant(AST_Expression::ExprType t,
			   AST_Decl::NodeType nt,
			   AST_Expression *v,
			   UTL_ScopedName *n,
			   UTL_StrList *p)
	    : AST_Decl(nt, n, p),
	      pd_constant_value(idl_global->gen()->create_expr(v, t)),
	      pd_et(t)
{
}

/*
 * Used when constructing AST_Constant nodes
 */
AST_Constant::AST_Constant(AST_Expression::ExprType t,
			   AST_Expression *v,
			   UTL_ScopedName *n,
			   UTL_StrList *p)
	    : AST_Decl(AST_Decl::NT_const, n, p),
	      pd_constant_value(idl_global->gen()->create_expr(v, t)),
	      pd_et(t)
{
}

/*
 * Private operations
 */

/*
 * Public operations
 */


/*
 * Redefinition of inherited virtual operations
 */

/*
 * Dump this AST_Constant node to the ostream o
 */
void
AST_Constant::dump( std:: ostream &o)
{
  o << "const " << exprtype_to_string(pd_et) << " ";
  local_name()->dump(o);
  o << " = ";
  pd_constant_value->dump(o);
}

/*
 * Data accessors
 */

AST_Expression *
AST_Constant::constant_value()
{
  return pd_constant_value;
}

AST_Expression::ExprType
AST_Constant::et()
{
  return pd_et;
}

/*
 * Narrowing methods
 */
IMPL_NARROW_METHODS1(AST_Constant, AST_Decl)
IMPL_NARROW_FROM_DECL(AST_Constant)
