[Lex] Remove unused includes (NFC) (#116460)

Identified with misc-include-cleaner.

[clang] NFC: Remove `OptionalFileEntryRefDegradesToFileEntryPtr` (#74899)

[clang][lex] NFC: Use FileEntryRef in PreprocessorLexer::getFileEntry()

This patch changes the return type of `PreprocessorLexer::getFileEntry()` so that its clients may stop using the deprecated AP

[clang][lex] NFC: Use FileEntryRef in PreprocessorLexer::getFileEntry()

This patch changes the return type of `PreprocessorLexer::getFileEntry()` so that its clients may stop using the deprecated APIs of `FileEntry`.

Reviewed By: bnbarham

Differential Revision: https://reviews.llvm.org/D123772

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Factor out repeated code parsing and concatenating header-names from
tokens.

We now actually form an angled_string_literal token for a header name by
concatenation rather than just working out what

Factor out repeated code parsing and concatenating header-names from
tokens.

We now actually form an angled_string_literal token for a header name by
concatenation rather than just working out what its contents would be.
This substantially simplifies downstream processing and is necessary for
C++20 header unit imports.

llvm-svn: 356433

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Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the ne

Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636

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Remove \brief commands from doxygen comments.

This is similar to the LLVM change https://reviews.llvm.org/D46290.

We've been running doxygen with the autobrief option for a couple of
years now. Thi

Remove \brief commands from doxygen comments.

This is similar to the LLVM change https://reviews.llvm.org/D46290.

We've been running doxygen with the autobrief option for a couple of
years now. This makes the \brief markers into our comments
redundant. Since they are a visual distraction and we don't want to
encourage more \brief markers in new code either, this patch removes
them all.

Patch produced by

for i in $(git grep -l '\@brief'); do perl -pi -e 's/\@brief //g' $i & done
for i in $(git grep -l '\\brief'); do perl -pi -e 's/\\brief //g' $i & done

Differential Revision: https://reviews.llvm.org/D46320

llvm-svn: 331834

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[Lex] Fix some Clang-tidy modernize and Include What You Use warnings; other minor fixes (NFC).

llvm-svn: 319714

Make Preprocessor::Lex non-recursive.

Before this patch, Lex() would recurse whenever the current lexer changed (e.g.
upon entry into a macro). This patch turns the recursion into a loop: the
variou

Make Preprocessor::Lex non-recursive.

Before this patch, Lex() would recurse whenever the current lexer changed (e.g.
upon entry into a macro). This patch turns the recursion into a loop: the
various lex routines now don't return a token when the current lexer changes,
and at the top level Preprocessor::Lex() now loops until it finds a token.
Normally, the recursion wouldn't end up being very deep, but the recursion depth
can explode in edge cases like a bunch of consecutive macros which expand to
nothing (like in the testcase test/Preprocessor/macro_expand_empty.c in this
patch).

<rdar://problem/14569770>

llvm-svn: 190980

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Sort all of Clang's files under 'lib', and fix up the broken headers
uncovered.

This required manually correcting all of the incorrect main-module
headers I could find, and running the new llvm/util

Sort all of Clang's files under 'lib', and fix up the broken headers
uncovered.

This required manually correcting all of the incorrect main-module
headers I could find, and running the new llvm/utils/sort_includes.py
script over the files.

I also manually added quite a few missing headers that were uncovered by
shuffling the order or moving headers up to be main-module-headers.

llvm-svn: 169237

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Revert r167801, "[preprocessor] When #including something that contributes no
tokens at all,". This change broke External/Nurbs in LLVM test-suite.

llvm-svn: 167858

[preprocessor] When #including something that contributes no tokens at all,
don't recursively continue lexing.

This avoids a stack overflow with a sequence of many empty #includes.
rdar://11988695

[preprocessor] When #including something that contributes no tokens at all,
don't recursively continue lexing.

This avoids a stack overflow with a sequence of many empty #includes.
rdar://11988695

llvm-svn: 167801

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Documentation cleanup: Use \brief for summaries, and escape # characters.

llvm-svn: 158619

Unweaken vtables as per http://llvm.org/docs/CodingStandards.html#ll_virtual_anch

llvm-svn: 146959

Boost the efficiency of SourceManager::getMacroArgExpandedLocation.

Currently getMacroArgExpandedLocation is very inefficient and for the case
of a location pointing at the main file it will end up

Boost the efficiency of SourceManager::getMacroArgExpandedLocation.

Currently getMacroArgExpandedLocation is very inefficient and for the case
of a location pointing at the main file it will end up checking almost all of
the SLocEntries. Make it faster:

-Use a map of macro argument chunks to their expanded source location. The map
is for a single source file, it's stored in the file's ContentCache and lazily
computed, like the source lines cache.
-In SLocEntry's FileInfo add an 'unsigned NumCreatedFIDs' field that keeps track
of the number of FileIDs (files and macros) that were created during preprocessing
of that particular file SLocEntry. This is useful when computing the macro argument
map in skipping included files while scanning for macro arg FileIDs that lexed from
a specific source file. Due to padding, the new field does not increase the size
of SLocEntry.

llvm-svn: 138225

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Rename tok::eom to tok::eod.

The previous name was inaccurate as this token in fact appears at
the end of every preprocessing directive, not just macro definitions.
No functionality change, except f

Rename tok::eom to tok::eod.

The previous name was inaccurate as this token in fact appears at
the end of every preprocessing directive, not just macro definitions.
No functionality change, except for a diagnostic tweak.

llvm-svn: 126631

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Remove tabs, and whitespace cleanups.

llvm-svn: 81346

move library-specific diagnostic headers into library private dirs. Reduce
redundant #includes. Patch by Anders Johnsen!

llvm-svn: 63271

Split the single monolithic DiagnosticKinds.def file into one
.def file for each library. This means that adding a diagnostic
to sema doesn't require all the other libraries to be rebuilt.

Patch by

Split the single monolithic DiagnosticKinds.def file into one
.def file for each library. This means that adding a diagnostic
to sema doesn't require all the other libraries to be rebuilt.

Patch by Anders Johnsen!

llvm-svn: 63111

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this massive patch introduces a simple new abstraction: it makes
"FileID" a concept that is now enforced by the compiler's type checker
instead of yet-another-random-unsigned floating around.

This i

this massive patch introduces a simple new abstraction: it makes
"FileID" a concept that is now enforced by the compiler's type checker
instead of yet-another-random-unsigned floating around.

This is an important distinction from the "FileID" currently tracked by
SourceLocation. *That* FileID may refer to the start of a file or to a
chunk within it. The new FileID *only* refers to the file (and its
#include stack and eventually #line data), it cannot refer to a chunk.

FileID is a completely opaque datatype to all clients, only SourceManager
is allowed to poke and prod it.

llvm-svn: 62407

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Change some terminology in SourceLocation: instead of referring to
the "physical" location of tokens, refer to the "spelling" location.
This is more concrete and useful, tokens aren't really physica

Change some terminology in SourceLocation: instead of referring to
the "physical" location of tokens, refer to the "spelling" location.
This is more concrete and useful, tokens aren't really physical objects!

llvm-svn: 62309

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remove a sneaky version of Diag hiding in PreprocessorLexer.

llvm-svn: 59858

Change the Lexer::Diag method to not magically silence warnings,
force the caller to check instead. This eliminates the need (and the
risk!) of weird null DiagnosticBuilder's floating around.

llvm-

Change the Lexer::Diag method to not magically silence warnings,
force the caller to check instead. This eliminates the need (and the
risk!) of weird null DiagnosticBuilder's floating around.

llvm-svn: 59856

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- Default initialize ParsingPreprocessorDirective, ParsingFilename, and
LexingRawMode in the ctor of PreprocessorLexer.

- PTHLexer: Use "LastToken" instead of "NumToken"

llvm-svn: 59690

- Move static function IsNonPragmaNonMacroLexer into Preprocessor.h.
- Add variants of IsNonPragmaNonMacroLexer to accept an IncludeMacroStack entry
(simplifies some uses).
- Use IsNonPragmaNonMacr

- Move static function IsNonPragmaNonMacroLexer into Preprocessor.h.
- Add variants of IsNonPragmaNonMacroLexer to accept an IncludeMacroStack entry
(simplifies some uses).
- Use IsNonPragmaNonMacroLexer in Preprocessor::LookupFile.
- Add 'FileID' to PreprocessorLexer, and have Preprocessor query this fileid
when looking up the FileEntry for a file

Performance testing of -Eonly on Cocoa.h shows no performance regression because
of this patch.

llvm-svn: 59666

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Remove the last of the old-style Preprocessor::Diag methods.

llvm-svn: 59554