/*

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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
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Definition Language CFE without charge, but you are not authorized to
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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_structure.cc - Implementation of class AST_Structure
 *
 * AST_Structure nodes denote IDL struct declarations.
 * AST_Structure is a subclass of AST_ConcreteType and of UTL_Scope (the
 * structure's fields are managed in a scope).
 */

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

/*
 * Constructor(s) and destructor
 */
AST_Structure::AST_Structure()
{
}

AST_Structure::AST_Structure(UTL_ScopedName *n, UTL_StrList *p)
	     : AST_Decl(AST_Decl::NT_struct, n, p),
	       UTL_Scope(AST_Decl::NT_struct)
{
}

AST_Structure::AST_Structure(AST_Decl::NodeType nt,
			     UTL_ScopedName *n,
			     UTL_StrList *p)
	     : AST_Decl(nt, n, p),
	       UTL_Scope(nt)
{
}

/*
 * Private operations
 */

/*
 * Public operations
 */

/*
 * Redefinition of inherited virtual operations
 */

/*
 * Add this AST_Field node (a field declaration) to this scope
 */
AST_Field *AST_Structure::fe_add_field(AST_Field *t)
{
  AST_Decl *d;

  /*
   * Already defined and cannot be redefined? Or already used?
   */
  if ((d = lookup_for_add(t, I_FALSE, I_TRUE)) != NULL) {
    if (!can_be_redefined(d)) {
      idl_global->err()->error3(UTL_Error::EIDL_REDEF, t, this, d);
      return NULL;
    }
    if (referenced(d)) {
      idl_global->err()->error3(UTL_Error::EIDL_DEF_USE, t, this, d);
      return NULL;
    }
    if (t->has_ancestor(d)) {
      idl_global->err()->redefinition_in_scope(t, d);
      return NULL;
    }
  }
  /*
   * Add it to scope
   */
  add_to_scope(t);
  /*
   * Add it to set of locally referenced symbols
   */
  add_to_referenced(t, I_FALSE);

  return t;
}

/*
 * Add an AST_Structure node (a manifest struct type) to this scope
 */
AST_Structure *AST_Structure::fe_add_structure(AST_Structure *t)
{
  AST_Decl *d;

  /*
   * Already defined and cannot be redefined? Or already used?
   */
  if ((d = lookup_for_add(t, I_FALSE, I_TRUE)) != NULL) {
    if (!can_be_redefined(d)) {
      idl_global->err()->error3(UTL_Error::EIDL_REDEF, t, this, d);
      return NULL;
    }
    if (referenced(d)) {
      idl_global->err()->error3(UTL_Error::EIDL_DEF_USE, t, this, d);
      return NULL;
    }
    if (t->has_ancestor(d)) {
      idl_global->err()->redefinition_in_scope(t, d);
      return NULL;
    }
  }
  /*
   * Add it to local types
   */
  add_to_local_types(t);
  /*
   * Add it to set of locally referenced symbols
   */
  add_to_referenced(t, I_FALSE);

  return t;
}

/*
 * Add an AST_Union node (a manifest union type) to this scope
 */
AST_Union *AST_Structure::fe_add_union(AST_Union *t)
{
  AST_Decl *d;

  /*
   * Already defined and cannot be redefined? Or already used?
   */
  if ((d = lookup_for_add(t, I_FALSE, I_TRUE)) != NULL) {
    if (!can_be_redefined(d)) {
      idl_global->err()->error3(UTL_Error::EIDL_REDEF, t, this, d);
      return NULL;
    }
    if (referenced(d)) {
      idl_global->err()->error3(UTL_Error::EIDL_DEF_USE, t, this, d);
      return NULL;
    }
    if (t->has_ancestor(d)) {
      idl_global->err()->redefinition_in_scope(t, d);
      return NULL;
    }
  }
  /*
   * Add it to local types
   */
  add_to_local_types(t);
  /*
   * Add it to set of locally referenced symbols
   */
  add_to_referenced(t, I_FALSE);

  return t;
}

/*
 * Add this AST_Enum node (a manifest enum declaration) to this scope
 */
AST_Enum *AST_Structure::fe_add_enum(AST_Enum *t)
{
  AST_Decl *d;

  /*
   * Already defined and cannot be redefined? Or already used?
   */
  if ((d = lookup_for_add(t, I_FALSE, I_TRUE)) != NULL) {
    if (!can_be_redefined(d)) {
      idl_global->err()->error3(UTL_Error::EIDL_REDEF, t, this, d);
      return NULL;
    }
    if (referenced(d)) {
      idl_global->err()->error3(UTL_Error::EIDL_DEF_USE, t, this, d);
      return NULL;
    }
    if (t->has_ancestor(d)) {
      idl_global->err()->redefinition_in_scope(t, d);
      return NULL;
    }
  }
  /*
   * Add it to local types
   */
  add_to_local_types(t);
  /*
   * Add it to set of locally referenced symbols
   */
  add_to_referenced(t, I_FALSE);

  return t;
}

/*
 * Add this AST_EnumVal node (an enumerator declaration) to this scope.
 * This is done to conform to the C++ scoping rules which declare
 * enumerators in the enclosing scope (in addition to declaring them
 * in the enum itself)
 */
AST_EnumVal *AST_Structure::fe_add_enum_val(AST_EnumVal *t)
{
  AST_Decl *d;

  /*
   * Already defined and cannot be redefined? Or already used?
   */
  if ((d = lookup_for_add(t, I_FALSE, I_TRUE)) != NULL) {
    if (!can_be_redefined(d)) {
      idl_global->err()->error3(UTL_Error::EIDL_REDEF, t, this, d);
      return NULL;
    }
    if (referenced(d)) {
      idl_global->err()->error3(UTL_Error::EIDL_DEF_USE, t, this, d);
      return NULL;
    }
    if (t->has_ancestor(d)) {
      idl_global->err()->redefinition_in_scope(t, d);
      return NULL;
    }
  }
  /*
   * Add it to scope
   */
  add_to_scope(t);
  /*
   * Add it to set of locally referenced symbols
   */
  add_to_referenced(t, I_FALSE);

  return t;
}

/*
 * Dump this AST_Structure node to the ostream o
 */
void
AST_Structure::dump( std:: ostream &o)
{
  o << "struct ";
  AST_Decl::dump(o);
  o << " {\n";
  UTL_Scope::dump(o);
  idl_global->indent()->skip_to(o);
  o << "}";
}

// Narrowing
IMPL_NARROW_METHODS2(AST_Structure, AST_ConcreteType, UTL_Scope)
IMPL_NARROW_FROM_DECL(AST_Structure)
IMPL_NARROW_FROM_SCOPE(AST_Structure)
