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This commit is the result of running the gdb/copyright.py script, which automated the update of the copyright year range for all source files managed by the GDB project to be updated to include year 2023.
132 lines
4.5 KiB
C++
132 lines
4.5 KiB
C++
/* Code dealing with "using" directives for GDB.
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Copyright (C) 2003-2023 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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#ifndef NAMESPACE_H
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#define NAMESPACE_H
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#include "gdbsupport/gdb_vecs.h"
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#include "gdbsupport/gdb_obstack.h"
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/* This struct is designed to store data from using directives. It
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says that names from namespace IMPORT_SRC should be visible within
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namespace IMPORT_DEST. These form a linked list; NEXT is the next
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element of the list. If the imported namespace or declaration has
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been aliased within the IMPORT_DEST namespace, ALIAS is set to a
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string representing the alias. Otherwise, ALIAS is NULL.
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DECLARATION is the name of the imported declaration, if this import
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statement represents one. Otherwise DECLARATION is NULL and this
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import statement represents a namespace. DECL_LINE is the line
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where the using directive is written in the source code.
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C++: using namespace A;
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Fortran: use A
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import_src = "A"
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import_dest = local scope of the import statement even such as ""
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alias = NULL
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declaration = NULL
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excludes = NULL
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C++: using A::x;
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Fortran: use A, only: x
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import_src = "A"
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import_dest = local scope of the import statement even such as ""
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alias = NULL
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declaration = "x"
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excludes = NULL
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The declaration will get imported as import_dest::x.
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C++ has no way to import all names except those listed ones.
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Fortran: use A, localname => x
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import_src = "A"
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import_dest = local scope of the import statement even such as ""
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alias = "localname"
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declaration = "x"
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excludes = NULL
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+
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import_src = "A"
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import_dest = local scope of the import statement even such as ""
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alias = NULL
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declaration = NULL
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excludes = ["x"]
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All the entries of A get imported except of "x". "x" gets imported as
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"localname". "x" is not defined as a local name by this statement.
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C++: namespace LOCALNS = A;
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Fortran has no way to address non-local namespace/module.
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import_src = "A"
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import_dest = local scope of the import statement even such as ""
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alias = "LOCALNS"
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declaration = NULL
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excludes = NULL
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The namespace will get imported as the import_dest::LOCALNS
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namespace.
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C++ cannot express it, it would be something like: using localname
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= A::x;
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Fortran: use A, only localname => x
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import_src = "A"
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import_dest = local scope of the import statement even such as ""
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alias = "localname"
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declaration = "x"
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excludes = NULL
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The declaration will get imported as localname or
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`import_dest`localname. */
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struct using_direct
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{
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const char *import_src;
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const char *import_dest;
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const char *alias;
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const char *declaration;
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struct using_direct *next;
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/* The line where the using directive was declared on the source file.
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This is used to check if the using directive is already active at the
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point where the inferior is stopped. */
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unsigned int decl_line;
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/* Used during import search to temporarily mark this node as
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searched. */
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int searched;
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/* USING_DIRECT has variable allocation size according to the number of
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EXCLUDES entries, the last entry is NULL. */
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const char *excludes[1];
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/* Returns true if the using_direcive USING_DIR is valid in CURR_LINE.
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Because current GCC (at least version 12.2) sets the decl_line as
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the last line in the current block, we need to take this into
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consideration when checking the validity, by comparing it to
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BOUNDARY, the last line of the current block. */
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bool valid_line (unsigned int boundary) const;
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};
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extern void 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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const unsigned int decl_line,
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int copy_names,
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struct obstack *obstack);
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#endif /* NAMESPACE_H */
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