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117 lines
3.9 KiB
C
117 lines
3.9 KiB
C
/* Code dealing with "using" directives for GDB.
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Copyright (C) 2003-2020 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "namespace.h"
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/* Add a using directive to USING_DIRECTIVES. If the using directive
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in question has already been added, don't add it twice.
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Create a new struct using_direct which imports the namespace SRC
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into the scope DEST. ALIAS is the name of the imported namespace
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in the current scope. If ALIAS is NULL then the namespace is known
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by its original name. DECLARATION is the name if the imported
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variable if this is a declaration import (Eg. using A::x), otherwise
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it is NULL. EXCLUDES is a list of names not to import from an
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imported module or NULL. If COPY_NAMES is non-zero, then the
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arguments are copied into newly allocated memory so they can be
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temporaries. For EXCLUDES the contents of the vector are copied,
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but the pointed to characters are not copied. */
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void
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add_using_directive (struct using_direct **using_directives,
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const char *dest,
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const char *src,
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const char *alias,
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const char *declaration,
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const std::vector<const char *> &excludes,
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int copy_names,
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struct obstack *obstack)
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{
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struct using_direct *current;
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struct using_direct *newobj;
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int alloc_len;
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/* Has it already been added? */
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for (current = *using_directives; current != NULL; current = current->next)
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{
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int ix;
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if (strcmp (current->import_src, src) != 0)
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continue;
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if (strcmp (current->import_dest, dest) != 0)
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continue;
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if ((alias == NULL && current->alias != NULL)
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|| (alias != NULL && current->alias == NULL)
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|| (alias != NULL && current->alias != NULL
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&& strcmp (alias, current->alias) != 0))
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continue;
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if ((declaration == NULL && current->declaration != NULL)
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|| (declaration != NULL && current->declaration == NULL)
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|| (declaration != NULL && current->declaration != NULL
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&& strcmp (declaration, current->declaration) != 0))
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continue;
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/* Compare the contents of EXCLUDES. */
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for (ix = 0; ix < excludes.size (); ++ix)
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if (current->excludes[ix] == NULL
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|| strcmp (excludes[ix], current->excludes[ix]) != 0)
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break;
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if (ix < excludes.size () || current->excludes[ix] != NULL)
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continue;
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/* Parameters exactly match CURRENT. */
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return;
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}
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alloc_len = (sizeof(*newobj)
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+ (excludes.size () * sizeof(*newobj->excludes)));
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newobj = (struct using_direct *) obstack_alloc (obstack, alloc_len);
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memset (newobj, 0, sizeof (*newobj));
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if (copy_names)
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{
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newobj->import_src = obstack_strdup (obstack, src);
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newobj->import_dest = obstack_strdup (obstack, dest);
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}
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else
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{
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newobj->import_src = src;
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newobj->import_dest = dest;
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}
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if (alias != NULL && copy_names)
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newobj->alias = obstack_strdup (obstack, alias);
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else
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newobj->alias = alias;
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if (declaration != NULL && copy_names)
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newobj->declaration = obstack_strdup (obstack, declaration);
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else
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newobj->declaration = declaration;
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if (!excludes.empty ())
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memcpy (newobj->excludes, excludes.data (),
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excludes.size () * sizeof (*newobj->excludes));
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newobj->excludes[excludes.size ()] = NULL;
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newobj->next = *using_directives;
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*using_directives = newobj;
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}
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