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path: root/lib/Basic/SourceManager.cpp
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2010-08-18More PCH -> AST renaming.Sebastian Redl
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111472 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-28Add a test case for tentative definitions in chained PCH. Fix a bug that ↵Sebastian Redl
completely messed up source locations and thus caused a crash whenever a diagnostic was emitted in chained PCH files. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109660 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-26Introduce basic support for loading a precompiled preamble whileDouglas Gregor
reparsing an ASTUnit. When saving a preamble, create a buffer larger than the actual file we're working with but fill everything from the end of the preamble to the end of the file with spaces (so the lexer will quickly skip them). When we load the file, create a buffer of the same size, filling it with the file and then spaces. Then, instruct the lexer to start lexing after the preamble, therefore continuing the parse from the spot where the preamble left off. It's now possible to perform a simple preamble build + parse (+ reparse) with ASTUnit. However, one has to disable a bunch of checking in the PCH reader to do so. That part isn't committed; it will likely be handled with some other kind of flag (e.g., -fno-validate-pch). As part of this, fix some issues with null termination of the memory buffers created for the preamble; we were trying to explicitly NULL-terminate them, even though they were also getting implicitly NULL terminated, leading to excess warnings about NULL characters in source files. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109445 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-07clean up isBeforeInTranslationUnit by factoring out some commonChris Lattner
code into a MoveUpIncludeHierarchy helper, and use the helper to fix a case involving macros which regressed from my recent patch. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103288 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-07reimplement the guts of SourceManager::isBeforeInTranslationUnitChris Lattner
to be algorithmically faster and avoid an std::map. This routine basically boils down to finding the nearest common ancestor in a tree, and we (implicitly) have information about nesting depth, use it! This wraps up rdar://7948633 - SourceManager::isBeforeInTranslationUnit has poor performance git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103239 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-07start using the caching now that it appears to work!Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103236 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-07reimplement the caching in the SourceManager::isBeforeInTranslationUnit()Chris Lattner
method to be correct. Right now it correctly computes the cache, then goes ahead and computes the result the hard way, then asserts that they match. Next I'll actually turn it on. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103231 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-06Workaround a really serious caching bug in ↵Ted Kremenek
SourceManager::isBeforeInTranslationUnit() where the method will sometimes return different results for the same input SourceLocations. I haven't unraveled this method completely yet, so this truly is a workaround until a better fix comes along. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103143 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-20change FullSourceLoc to have a *const* SourceManager&, eliminatingChris Lattner
a const_cast. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101940 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-20push some source location information down through the compiler,Chris Lattner
into ContentCache::getBuffer. This allows it to produce diagnostics on the broken #include line instead of without a location. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101939 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-20enhance sourcemgr to detect various UTF BOM's and emit a fatal errorChris Lattner
about it instead of producing tons of garbage from the lexer. It would be even better for sourcemgr to dynamically transcode (e.g. from UTF16 -> UTF8). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101924 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-10Disable diag::err_file_modified on Win32 completely, until someone cares to fixDaniel Dunbar
it. PR6812. - This is another attempt at silencing annoying buildbot failures. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100914 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-09On Windows, disable the modification-time check for files used inDouglas Gregor
precompiled headers and/or when reading the contents of the file into memory. These checks seem to be causing spurious regression-test failures on Windows. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100866 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-22Introduce the notion of a single "delayed" diagnostic into theDouglas Gregor
Diagnostic subsystem, which is used in the rare case where we find a serious problem (i.e., an inconsistency in the file system) while we're busy formatting another diagnostic. In this case, the delayed diagnostic will be emitted after we're done with the other diagnostic. This is only to be used for fatal conditions detected at very inconvenient times, where we can neither stop the current diagnostic in flight nor can we suppress the second error. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99175 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-21Keep track of the size/modification time of each file source-locationDouglas Gregor
entry in a precompiled header, so that we can detect modified files even when we miss in the stat cache. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99149 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-19Fix a longstanding (but previously unknown) bug in the lazyDouglas Gregor
deserialization of precompiled headers, where the deserialization of the source location entry for a buffer (e.g., macro instantiation scratch space) would overwrite a one-element FileID cache in the source manager. When tickled at the wrong time, we would return the wrong decomposed source location and eventually cause c-index-test to crash. Found by dumb luck. It's amazing this hasn't shown up before. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98940 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-17Check the inode in addition to size and modification time to determineDouglas Gregor
whether a file has changed since it was originally read. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98726 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-17Use a simple diagnostic (file modified) when we detect that a file hasDouglas Gregor
changed, rather than trying to point out how it changed. The "why" doesn't matter. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98725 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-16Teach SourceManager's content cache to keep track of whether itsDouglas Gregor
buffer was invalid when it was created, and use that bit to always set the "Invalid" flag according to whether the buffer is invalid. This ensures that all accesses to an invalid buffer are marked invalid, improving recovery. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98690 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-16Audit all getBuffer() callers (for both the FullSourceLoc andDouglas Gregor
SourceManager versions), updating those callers that need to recover gracefully from failure. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98665 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-16Let SourceManager::getBufferData return StringRef instead of a pair of two ↵Benjamin Kramer
const char*. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98630 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-16Introduce optional "Invalid" parameters to routines that invoke theDouglas Gregor
SourceManager's getBuffer() and, therefore, could fail, along with Preprocessor::getSpelling(). Use the Invalid parameters in the literal parsers (string, floating point, integral, character) to make them robust against errors that stem from, e.g., PCH files that are not consistent with the underlying file system. I still need to audit every use caller to all of these routines, to determine which ones need specific handling of error conditions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98608 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-16Use SourceManager's Diagnostic object for all file-reading errors,Douglas Gregor
simplifying the SourceManager interfaces somewhat. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98598 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-16Give SourceManager a Diagnostic object with which to report errors,Douglas Gregor
and start simplifying the interfaces in SourceManager that can fail. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98594 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-15Add some <cstdio> includes to unbreak the buildbotsDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98591 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-15Introduce a new BufferResult class to act as the return type ofDouglas Gregor
SourceManager's getBuffer() (and similar) operations. This abstract can be used to force callers to cope with errors in getBuffer(), such as missing files and changed files. Fix a bunch of callers to use the new interface. Add some very basic checks for file consistency (file size, modification time) into ContentCache::getBuffer(), although these checks don't help much until we've updated the main callers (e.g., SourceManager::getSpelling()). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98585 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-10Fix -Wsign-compare warning reported by clang++.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98170 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-27Robustify SourceManager::getLocation(), so that it returns anDouglas Gregor
end-of-line source location when given a column number beyond the length of the line, or an end-of-file source location when given a line number beyond the length of the file. Previously, we would return an invalid location. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97299 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-12fix a bug in SourceManager::getInstantiationLocSlowCase, whereChris Lattner
we'd add an offset from the spelling location space to the instantiation location, which doesn't make sense and would lead up to the text diagnostics crashing when presented with non-sensical locations. This fixes rdar://7597492, a crash on 255.vortex. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@96004 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-06Add a pretty horrible hack to prevent clang from crashing with inconsistent PCHDaniel Dunbar
files. - The issue is that PCH uses a stat cache, which may reference files which have been deleted or moved. In such cases ContentCache::getBuffer was returning 0 but most clients are incapable of dealing with this (i.e., they don't). For the time being, resolve this issue by just making up some invalid file contents and. Eventually we should detect that we are in an inconsistent situation and error out with a nice message that the PCH is out of date. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90699 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-03Minor cleanup to the code-completion-point logic suggested by Chris.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90459 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-02Extend the source manager with the ability to override the contents ofDouglas Gregor
files with the contents of an arbitrary memory buffer. Use this new functionality to drastically clean up the way in which we handle file truncation for code-completion: all of the truncation/completion logic is now encapsulated in the preprocessor where it belongs (<rdar://problem/7434737>). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90300 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-02Eliminate the unnecessary FirstFID cache variable from the source manager's ↵Douglas Gregor
ContentCache git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90294 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-01In SourceManager::isBeforeInTranslationUnit, if we are trying to compare two ↵Daniel Dunbar
source locations with no common ancestor in the include stack, determine order by assuming memory buffers preceed files, and then that FileIDs are created in order. The later assumption is patently false, but this was already broken -- this situation is conceptually impossible, my feeling is we should fix SourceManager and friends to make it impossible in practice as well. However, we need to fix PR5662 and perhaps some other things involving memory buffers first. In the short term I'm pretty sure this is reliable. Chris, Argiris, is this going to break anything that wasn't already broken? git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90280 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-01pass the reason for failure up from MemoryBuffer and report itChris Lattner
in diagnostics when we fail to open a file. This allows us to report things like: $ clang test.c -I. test.c:2:10: fatal error: error opening file './foo.h': Permission denied #include "foo.h" ^ git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90276 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-14Move DISABLE_INLINE to the front of the decl so MSVC can parse it. Patch by ↵Benjamin Kramer
Amine Khaldi! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@88797 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-03pr5371 likely has nothing to do with this.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@85862 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-02Add note to FIXME about PR5371.Edward O'Callaghan
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@85825 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-22Replace the -code-completion-dump option with Douglas Gregor
-code-completion-at=filename:line:column which performs code completion at the specified location by truncating the file at that position and enabling code completion. This approach makes it possible to run multiple tests from a single test file, and gives a more natural command-line interface. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@82571 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-09Remove tabs, and whitespace cleanups.Mike Stump
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@81346 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-23API changes to match llvm ToT.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@79868 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-23Replace cerr with errs().Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@79854 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-25Fix column checking for SourceManager::getLocation().Argyrios Kyrtzidis
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74194 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-23Fix warning when building w/o asserts.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74020 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-23Introduce SourceManager::ísBeforeInTranslationUnit() which can compare 2 ↵Argyrios Kyrtzidis
source locations and determine which one comes before the other, relative to the translation unit. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74014 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-23In SourceManager::createFileID missed setting ContentCache's FirstFID in ↵Argyrios Kyrtzidis
another place. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73931 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-20Slight modification to column checking inside SourceManager::getLocation().Argyrios Kyrtzidis
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73826 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-20Introduce SourceManager::getLocation() to get a source location out of a ↵Argyrios Kyrtzidis
"file:line:column" triplet. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73823 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-07Remove dead code: 'NewEntry' is not used.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73027 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-18Avoid potential out-of-bounds access in SourceManager::getLineNumber.Daniel Dunbar
- Chris, please see added FIXMEs. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72019 91177308-0d34-0410-b5e6-96231b3b80d8
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