path: root/TAO/TAO_IDL/ast/ast_module.cpp

/*

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The Interface Definition Language Compiler Front End (CFE) is made
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 */

/*
 * ast_module.cc - Implementation of class AST_Module
 *
 * AST_Modules denote IDL module declarations
 * AST_Modules are subclasses of AST_Decl (they are not a type!) and
 * of UTL_Scope.
 */

#include	"idl.h"
#include	"idl_extern.h"

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

AST_Module::AST_Module(UTL_ScopedName *n, UTL_StrList *p)
	 : AST_Decl(AST_Decl::NT_module, n, p),
	   UTL_Scope(AST_Decl::NT_module)
{
}

/*
 * Private operations
 */

/*
 * Public operations
 */

/*
 * Redefinition of inherited virtual operations
 */

/*
 * Add this AST_PredefinedType node (a predefined type declaration) to
 * this scope
 */
AST_PredefinedType *AST_Module::fe_add_predefined_type(AST_PredefinedType *t)
{
  AST_Decl *d;

  /*
   * Already defined and cannot be redefined? Or already used?
   */
  if ((d = lookup_for_add(t, I_FALSE)) != 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 this AST_Module node (a module declaration) to this scope
 */
AST_Module *AST_Module::fe_add_module(AST_Module *t)
{
  AST_Decl *d;

  /*
   * Already defined and cannot be redefined? Or already used?
   */
  if ((d = lookup_for_add(t, I_FALSE)) != 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 this AST_Interface node (an interface declaration) to this scope
 */
AST_Interface *AST_Module::fe_add_interface(AST_Interface *t)
{
  AST_Decl		*predef;
  AST_Interface		*fwd;

  /*
   * Already defined?
   */
  if ((predef = lookup_for_add(t, I_FALSE)) != NULL) {
    /*
     * Treat fwd declared interfaces specially
     */
    if (predef->node_type() == AST_Decl::NT_interface) {
      fwd = AST_Interface::narrow_from_decl(predef);

      if (fwd == NULL)
          return NULL;
      
      if (!fwd->is_defined()) {	/* Forward declared and not defined yet */
	if (fwd->defined_in() != this) {
	  idl_global->err()
	     ->error3(UTL_Error::EIDL_SCOPE_CONFLICT, fwd, t, this);
	  return NULL;
        }
      }
      /*
       * OK, not illegal redef of forward declaration. Now check whether
       * it has been referenced already
       */
      else if (referenced(predef)) {
        idl_global->err()->error3(UTL_Error::EIDL_DEF_USE, t, this, predef);
	return NULL;
      }
    } else if (!can_be_redefined(predef)) {
      idl_global->err()->error3(UTL_Error::EIDL_REDEF, t, this, predef);
      return NULL;
    } else if (referenced(predef)) {
      idl_global->err()->error3(UTL_Error::EIDL_DEF_USE, t, this, predef);
      return NULL;
    } else if (t->has_ancestor(predef)) {
      idl_global->err()->redefinition_in_scope(t, predef);
      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 this AST_InterfaceFwd node (a forward declaration of an IDL
 * interface) to this scope
 */
AST_InterfaceFwd *AST_Module::fe_add_interface_fwd(AST_InterfaceFwd *i)
{
  AST_Decl	*d;
  AST_Interface	*itf;

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

  return i;
}

/*
 * Add this AST_Constant node (a constant declaration) to this scope
 */
AST_Constant *AST_Module::fe_add_constant(AST_Constant *t)
{
  AST_Decl *d;

  /*
   * Already defined and cannot be redefined? Or already used?
   */
  if ((d = lookup_for_add(t, I_FALSE)) != 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 this AST_Exception node (an exception declaration) to this scope
 */
AST_Exception *AST_Module::fe_add_exception(AST_Exception *t)
{
  AST_Decl *d;

  /*
   * Already defined and cannot be redefined? Or already used?
   */
  if ((d = lookup_for_add(t, I_FALSE)) != 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 this AST_Union node (a union declaration) to this scope
 */
AST_Union *AST_Module::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)) != 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 this AST_Structure node (a struct declaration) to this scope
 */
AST_Structure *AST_Module::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)) != 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 this AST_Enum node (an enum declaration) to this scope
 */
AST_Enum *AST_Module::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)) != 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 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_Module::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)) != 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 this AST_Typedef node (a typedef) to this scope
 */
AST_Typedef *AST_Module::fe_add_typedef(AST_Typedef *t)
{
  AST_Decl *d;

  /*
   * Already defined and cannot be redefined? Or already used?
   */
  if ((d = lookup_for_add(t, I_FALSE)) != 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_Module node to the ostream o
 */
void
AST_Module::dump(ostream &o)
{
  o << "module ";
  local_name()->dump(o);
  o << " {\n";
  UTL_Scope::dump(o);
  idl_global->indent()->skip_to(o);
  o << "}";
}

/*
 * Narrowing methods
 */
IMPL_NARROW_METHODS2(AST_Module, AST_Decl, UTL_Scope)
IMPL_NARROW_FROM_DECL(AST_Module)
IMPL_NARROW_FROM_SCOPE(AST_Module)