mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-23 10:03:47 +08:00
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.
108 lines
3.5 KiB
C++
108 lines
3.5 KiB
C++
/* Cache of styled source file text
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Copyright (C) 2018-2024 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 SOURCE_CACHE_H
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#define SOURCE_CACHE_H
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#include <unordered_map>
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#include <unordered_set>
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/* This caches two things related to source files.
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First, it caches highlighted source text, keyed by the source
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file's full name. A size-limited LRU cache is used.
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Highlighting depends on the GNU Source Highlight library. When not
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available or when highlighting fails for some reason, this cache
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will instead store the un-highlighted source text.
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Second, this will cache the file offsets corresponding to the start
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of each line of a source file. This cache is not size-limited. */
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class source_cache
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{
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public:
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source_cache ()
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{
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}
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/* This returns the vector of file offsets for the symtab S,
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computing the vector first if needed.
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On failure, returns false.
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On success, returns true and sets *OFFSETS. This pointer is not
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guaranteed to remain valid across other calls to get_source_lines
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or get_line_charpos. */
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bool get_line_charpos (struct symtab *s,
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const std::vector<off_t> **offsets);
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/* Get the source text for the source file in symtab S. FIRST_LINE
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and LAST_LINE are the first and last lines to return; line
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numbers are 1-based. If the file cannot be read, or if the line
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numbers are out of range, false is returned. Otherwise,
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LINES_OUT is set to the desired text. The returned text may
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include ANSI terminal escapes. */
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bool get_source_lines (struct symtab *s, int first_line,
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int last_line, std::string *lines_out);
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/* Remove all the items from the source cache. */
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void clear ()
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{
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m_source_map.clear ();
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m_offset_cache.clear ();
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m_no_styling_files.clear ();
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}
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private:
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/* One element in the cache. */
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struct source_text
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{
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/* The full name of the file. */
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std::string fullname;
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/* The contents of the file. */
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std::string contents;
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};
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/* A helper function for get_source_lines reads a source file.
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Returns the contents of the file; or throws an exception on
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error. This also updates m_offset_cache. */
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std::string get_plain_source_lines (struct symtab *s,
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const std::string &fullname);
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/* A helper function that the data for the given symtab is entered
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into both caches. Returns false on error. */
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bool ensure (struct symtab *s);
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/* The contents of the source text cache. */
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std::vector<source_text> m_source_map;
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/* The file offset cache. The key is the full name of the source
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file. */
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std::unordered_map<std::string, std::vector<off_t>> m_offset_cache;
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/* The list of files where styling failed. */
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std::unordered_set<std::string> m_no_styling_files;
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};
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/* The global source cache. */
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extern source_cache g_source_cache;
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#endif /* SOURCE_CACHE_H */
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