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Alex Lorenz 1be800c511 Add support for editor placeholders to Clang 
This commit teaches Clang to recognize editor placeholders that are produced
when an IDE like Xcode inserts a code-completion result that includes a
placeholder. Now when the lexer sees a placeholder token, it emits an
'editor placeholder in source file' error and creates an identifier token
that represents the placeholder. The parser/sema can now recognize the
placeholders and can suppress the diagnostics related to the placeholders. This
ensures that live issues in an IDE like Xcode won't get spurious diagnostics
related to placeholders.

This commit also adds a new compiler option named '-fallow-editor-placeholders'
that silences the 'editor placeholder in source file' error. This is useful
for an IDE like Xcode as we don't want to display those errors in live issues.

rdar://31581400

Differential Revision: https://reviews.llvm.org/D32081

llvm-svn: 300667
 		2017-04-19 08:58:56 +00:00
..
CMakeLists.txt
…
HeaderMap.cpp Use StringRef for MemoryBuffer identifier API (NFC) 2016-10-01 16:38:28 +00:00
HeaderSearch.cpp Fix handling of -fmodule-map-file=X where X has no directory component. 2017-03-09 00:58:22 +00:00
Lexer.cpp Add support for editor placeholders to Clang 2017-04-19 08:58:56 +00:00
LiteralSupport.cpp Allow lexer to handle string_view literals. Patch from Anton Bikineev. 2016-12-30 04:51:10 +00:00
MacroArgs.cpp [modules] Stop trying to fake up a linear MacroDirective history. 2015-04-29 23:20:19 +00:00
MacroInfo.cpp Retire llvm::alignOf in favor of C++11 alignof. 2016-10-20 14:27:22 +00:00
ModuleMap.cpp PR30508: Downgrade error to warning if the umbrella folder doesn't exist. 2017-04-18 20:57:29 +00:00
PPCaching.cpp [Preprocessor] Fix incorrect token caching that occurs when lexing _Pragma 2017-02-24 17:45:16 +00:00
PPCallbacks.cpp
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PPConditionalDirectiveRecord.cpp Switch PPCallbacks to take the new MacroDefinition instead of MacroDirective*, in order to preserve full information on module macro expansion. 2015-05-04 03:15:40 +00:00
PPDirectives.cpp Fix for pr31836 - pp_nonportable_path on absolute paths: broken delimiters 2017-02-21 22:30:55 +00:00
PPExpressions.cpp Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes. 2016-09-07 21:53:17 +00:00
PPLexerChange.cpp Use setUsedForHeaderGuard() accessor function instead of direcly accessing UsedForHeaderGuard. 2017-04-16 15:53:19 +00:00
PPMacroExpansion.cpp Add support for __builtin_available to __has_builtin 2017-04-12 11:03:25 +00:00
PTHLexer.cpp Turn FileManager DirectoryEntry::Name from raw pointer to StringRef (NFC) 2016-10-11 07:31:29 +00:00
Pragma.cpp [Preprocessor] Fix incorrect token caching that occurs when lexing _Pragma 2017-02-24 17:45:16 +00:00
PreprocessingRecord.cpp Retire llvm::alignOf in favor of C++11 alignof. 2016-10-20 14:27:22 +00:00
Preprocessor.cpp Reapply "Modules: Cache PCMs in memory and avoid a use-after-free" 2017-03-20 17:58:26 +00:00
PreprocessorLexer.cpp
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ScratchBuffer.cpp MSan told me that we actually dump the entire scratch buffer into PCH files, initialize it. 2015-04-06 20:01:49 +00:00
TokenConcatenation.cpp [PP] Replace some index based for loops with range based ones 2016-10-26 13:06:13 +00:00
TokenLexer.cpp [PP] Replace some index based for loops with range based ones 2016-10-26 13:06:13 +00:00
UnicodeCharSets.h Header guard canonicalization, clang part. 2014-08-13 16:25:19 +00:00