mirror of
https://sourceware.org/git/binutils-gdb.git
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1d506c26d9
This commit is the result of the following actions:
- Running gdb/copyright.py to update all of the copyright headers to
include 2024,
- Manually updating a few files the copyright.py script told me to
update, these files had copyright headers embedded within the
file,
- Regenerating gdbsupport/Makefile.in to refresh it's copyright
date,
- Using grep to find other files that still mentioned 2023. If
these files were updated last year from 2022 to 2023 then I've
updated them this year to 2024.
I'm sure I've probably missed some dates. Feel free to fix them up as
you spot them.
85 lines
3.2 KiB
C
85 lines
3.2 KiB
C
/* Interface to C preprocessor macro expansion for GDB.
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Copyright (C) 2002-2024 Free Software Foundation, Inc.
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Contributed by Red Hat, 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 MACROEXP_H
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#define MACROEXP_H
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struct macro_scope;
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/* Expand any preprocessor macros in SOURCE (a null-terminated string), and
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return the expanded text.
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Use SCOPE to find identifiers' preprocessor definitions.
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The result is a null-terminated string. */
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gdb::unique_xmalloc_ptr<char> macro_expand (const char *source,
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const macro_scope &scope);
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/* Expand all preprocessor macro references that appear explicitly in SOURCE
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(a null-terminated string), but do not expand any new macro references
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introduced by that first level of expansion.
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Use SCOPE to find identifiers' preprocessor definitions.
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The result is a null-terminated string. */
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gdb::unique_xmalloc_ptr<char> macro_expand_once (const char *source,
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const macro_scope &scope);
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/* If the null-terminated string pointed to by *LEXPTR begins with a
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macro invocation, return the result of expanding that invocation as
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a null-terminated string, and set *LEXPTR to the next character
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after the invocation. The result is completely expanded; it
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contains no further macro invocations.
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Otherwise, if *LEXPTR does not start with a macro invocation,
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return nullptr, and leave *LEXPTR unchanged.
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Use SCOPE to find macro definitions.
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If this function returns a string, the caller is responsible for
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freeing it, using xfree.
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We need this expand-one-token-at-a-time interface in order to
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accommodate GDB's C expression parser, which may not consume the
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entire string. When the user enters a command like
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(gdb) break *func+20 if x == 5
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the parser is expected to consume `func+20', and then stop when it
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sees the "if". But of course, "if" appearing in a character string
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or as part of a larger identifier doesn't count. So you pretty
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much have to do tokenization to find the end of the string that
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needs to be macro-expanded. Our C/C++ tokenizer isn't really
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designed to be called by anything but the yacc parser engine. */
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gdb::unique_xmalloc_ptr<char> macro_expand_next (const char **lexptr,
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const macro_scope &scope);
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/* Functions to classify characters according to cpp rules. */
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int macro_is_whitespace (int c);
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int macro_is_identifier_nondigit (int c);
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int macro_is_digit (int c);
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/* Stringify STR according to C rules and return a null-terminated string. */
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gdb::unique_xmalloc_ptr<char> macro_stringify (const char *str);
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#endif /* MACROEXP_H */
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