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path: root/lib/Lex/HeaderSearch.cpp
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2012-02-05Basic: import SmallString<> into clang namespaceDylan Noblesmith
(I was going to fix the TODO about DenseMap too, but that would break self-host right now. See PR11922.) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149799 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-30Thread a TargetInfo through to the module map; we'll need it forDouglas Gregor
target-specific module requirements. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149224 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-29Implement code completion support for module import declarations, e.g.,Douglas Gregor
@import <complete with module names here> or @import std.<complete with submodule names here> Addresses <rdar://problem/10710117>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149199 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-29Rework HeaderSearch's interface for getting a module from a name andDouglas Gregor
for getting the name of the module file, unifying the code for searching for a module with a given name (into lookupModule()) and separating out the mapping to a module file (into getModuleFileName()). No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149197 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-27Introduce module attributes into the module map grammar, along with aDouglas Gregor
single attribute ("system") that allows us to mark a module as being a "system" module. Each of the headers that makes up a system module is considered to be a system header, so that we (for example) suppress warnings there. If a module is being inferred for a framework, and that framework directory is within a system frameworks directory, infer it as a system framework. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149143 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-17Remove unreachable code in Clang. (replace with llvm_unreachable where ↵David Blaikie
appropriate or when GCC requires it) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148292 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-13When inferring a module for a framework, first determine whether thatDouglas Gregor
framework is actually a subframework within a top-level framework. If so, only infer a module for the top-level framework and then dig out the appropriate submodule. This helps us cope with an amusing subframeworks anti-pattern, where one uses -F <framework>/Frameworks to get direct include access to the subframeworks of a framework (which otherwise would not be permitted). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148148 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-31Implement support for module requirements, which indicate the languageDouglas Gregor
features needed for a particular module to be available. This allows mixed-language modules, where certain headers only work under some language variants (e.g., in C++, std.tuple might only be available in C++11 mode). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147387 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-09When performing subframework header lookup, don't search forDouglas Gregor
".framework/" in the path name, because it could be ".framework\" on Windows. This whole function needs to be rewritten with PathV2. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146261 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-09Move a free function from the Frontend library into the Lex library asChandler Carruth
part of HeaderSearch. This function just normalizes filenames for use inside of a synthetic include directive, but it is used in both the Frontend and Serialization libraries so it needs a common home. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146227 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-08Keep track of import dependencies between submodules within the moduleDouglas Gregor
that's currently being built. This is important for supporting transitive dependencies ("export *" in the module map) completely. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146156 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-07Make sure we pick up module_private.map when loading a module.map file.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146074 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-07Implement basic support for private headers in frameworks. In essence,Douglas Gregor
when we load a module map (module.map) from a directory, also load a private module map (module_private.map) for that directory, if present. That private module map can inject a new submodule that captures private headers. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146012 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-06When inferring a module map for a framework, infer subframeworkDouglas Gregor
modules for each of its subframeworks. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145957 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-06When suggesting a module import for a #include or #import, suggest theDouglas Gregor
most specific (sub)module based on the actual file we find, rather than always importing the top-level module. This means that #include'ing <Foo/Blah.h> should give us the submodule Foo.Blah. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145942 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-30Promote ModuleMap::Module to a namespace-scope class in the BasicDouglas Gregor
library, since modules cut across all of the libraries. Rename serialization::Module to serialization::ModuleFile to side-step the annoying naming conflict. Prune a bunch of ModuleMap.h includes that are no longer needed (most files only needed the Module type). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145538 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28When attempting to load a module that is not in the module cache,Douglas Gregor
return the module itself (in the module map) rather than returning the umbrella header used to build the module. While doing this, make sure that we're inferring modules for frameworks to build that module. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145310 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-20Allow preprocessor callbacks to recover from a "file not found" error,Douglas Gregor
from Jason Haslam! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145012 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-17When making a suggestion regarding which module to load rather thanDouglas Gregor
preprocess/parse a header, report back with an actual module (which may be a submodule) rather than just the name of the module. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144925 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-17When we're loading a framework header, first try to turn the frameworkDouglas Gregor
into a module. This module can either be loaded from a module map in the framework directory (which isn't quite working yet) or inferred from an umbrella header (which does work, and replaces the existing hack). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144877 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-16Add support for building a module from a module map to the -cc1Douglas Gregor
interface. This is currently limited to modules with umbrella headers. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144736 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-12Implement a minor optimization when loading module maps to satisfy aDouglas Gregor
module import: don't re-check for a loaded module unless we've actually loaded a new module map file. Already-loaded module map files aren't interesting. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144435 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-12When searching for a module, speculatively load module maps to see ifDouglas Gregor
the module is described in one of the module maps in a search path or in a subdirectory off the search path that has the same name as the module we're looking for. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144433 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-11Teach the search for modules to consider modules described by a moduleDouglas Gregor
map, so long as they have an umbrella header. This makes it possible to introduce a module map + umbrella header for a given set of headers, to turn it into a module. There are two major deficiencies here: first, we don't go hunting for module map files when we just see a module import (so we won't know about the modules described therein). Second, we don't yet have a way to build modules that don't have umbrella headers, or have incomplete umbrella headers. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144424 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-11Wire up the mapping from header files mentioned in module maps over toDouglas Gregor
the corresponding (top-level) modules. This isn't actually useful yet, because we don't yet have a way to build modules out of module maps. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144410 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-11Introduce basic support for parsing module map files.Douglas Gregor
Module map files provide a way to map between headers and modules, so that we can layer a module system on top of existing headers without changing those headers at all. This commit introduces the module map file parser and the module map that it generates, and wires up the module map file parser so that we'll automatically find module map files as part of header search. Note that we don't yet use the information stored in the module map. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144402 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-11I predict that HeaderSearch will need the ability to generateDouglas Gregor
diagnostics in the future. Make it so. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144347 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-17When we load header file information from the external source (i.e.,Douglas Gregor
the AST reader), merge that header file information with whatever header file information we already have. Otherwise, we might forget something we already knew (e.g., that the header was #import'd already). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139979 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-16Tweak the module auto-import heuristics a bitDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139887 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-15Add an experimental flag -fauto-module-import that automatically turnsDouglas Gregor
#include or #import direcctives of framework headers into module imports of the corresponding framework module. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139860 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-13For modules, use a hash of the compiler version, language options, andDouglas Gregor
target triple to separate modules built under different conditions. The hash is used to create a subdirectory in the module cache path where other invocations of the compiler (with the same version, language options, etc.) can find the precompiled modules. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139662 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-12When an import statement fails to find a module in the module cache,Douglas Gregor
but there is a corresponding umbrella header in a framework, build the module on-the-fly so it can be immediately loaded at the import statement. This is very much proof-of-concept code, with details to be fleshed out over time. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139558 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-12Introduce a cc1-level option to provide the path to the module cache,Douglas Gregor
where the compiler will look for module files. Eliminates the egregious hack where we looked into the header search paths for modules. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139538 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-30Use the "Bar.h" -> <Foo/Bar.h> remapping for index header maps only asDouglas Gregor
a fallback, if normal header search fails. Another attempt at <rdar://problem/9824020>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@136557 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-28Introduce the "-index-header-map" option, to give special semanticsDouglas Gregor
for quoted header lookup when dealing with not-yet-installed frameworks. Fixes <rdar://problem/9824020>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@136331 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-27Change HeaderSearch::getTotalMemory() to use llvm::capacity_in_bytes().Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@136237 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-26clang_getCXTUResourceUsage: report memory used by HeaderSearch.Ted Kremenek
This required converting the StringMaps to use a BumpPtrAllocator. I measured the compile time and saw no observable regression. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@136190 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-23remove unneeded llvm:: namespace qualifiers on some core types now that ↵Chris Lattner
LLVM.h imports them into the clang namespace. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@135852 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-08Fix up dependency file name printing to more closely match that of gcc, ↵Eli Friedman
including fixing a nasty recent regression that could make us print "/foo.h" with a command-line including "-I ./". rdar://problem/9734352 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@134728 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-24Make it possible for external tools to distinguish between paths that come ↵Nico Weber
from -I and paths that come from -system. Patch from Paul Holden! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@131955 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04Introduce a new libclang API, clang_isFileMultipleIncludeGuarded(),Douglas Gregor
which determines whether a particular file is actually a header that is intended to be guarded from multiple inclusions within the same translation unit. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130808 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-29Use DirectoryLookup::getName() rather than getDir()->getName() in a context ↵Douglas Gregor
where we don't know whether we have a normal directory git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130467 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-26To be able to replay compilations we need to accurately remodel howManuel Klimek
includes get resolved, especially when they are found relatively to another include file. We also try to get it working for framework includes, but that part of the code is untested, as I don't have a code base that uses it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130246 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-16Having FileManager::getFile always open the file, brought much consternation ↵Argyrios Kyrtzidis
and leaking of file descriptors. Add 'openFile' bool to FileManager::getFile to specify whether we want to have the file opened or not, have it false by default, and enable it only in HeaderSearch.cpp where the open+fstat optimization matters. Fixes rdar://9139899. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127748 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-16Add a 'RawPath' parameter to the PPCallbacks interface. This allowsChandler Carruth
clients to observe the exact path through which an #included file was located. This is very useful when trying to record and replay inclusion operations without it beind influenced by the aggressive caching done inside the FileManager to avoid redundant system calls and filesystem operations. The work to compute and return this is only done in the presence of callbacks, so it should have no effect on normal compilation. Patch by Manuel Klimek. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127742 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-10Implement two related optimizations that make de-serialization ofDouglas Gregor
AST/PCH files more lazy: - Don't preload all of the file source-location entries when reading the AST file. Instead, load them lazily, when needed. - Only look up header-search information (whether a header was already #import'd, how many times it's been included, etc.) when it's needed by the preprocessor, rather than pre-populating it. Previously, we would pre-load all of the file source-location entries, which also populated the header-search information structure. This was a relatively minor performance issue, since we would end up stat()'ing all of the headers stored within a AST/PCH file when the AST/PCH file was loaded. In the normal PCH use case, the stat()s were cached, so the cost--of preloading ~860 source-location entries in the Cocoa.h case---was relatively low. However, the recent optimization that replaced stat+open with open+fstat turned this into a major problem, since the preloading of source-location entries would now end up opening those files. Worse, those files wouldn't be closed until the file manager was destroyed, so just opening a Cocoa.h PCH file would hold on to ~860 file descriptors, and it was easy to blow through the process's limit on the number of open file descriptors. By eliminating the preloading of these files, we neither open nor stat the headers stored in the PCH/AST file until they're actually needed for something. Concretely, we went from *** HeaderSearch Stats: 835 files tracked. 364 #import/#pragma once files. 823 included exactly once. 6 max times a file is included. 3 #include/#include_next/#import. 0 #includes skipped due to the multi-include optimization. 1 framework lookups. 0 subframework lookups. *** Source Manager Stats: 835 files mapped, 3 mem buffers mapped. 37460 SLocEntry's allocated, 11215575B of Sloc address space used. 62 bytes of files mapped, 0 files with line #'s computed. with a trivial program that uses a chained PCH including a Cocoa PCH to *** HeaderSearch Stats: 4 files tracked. 1 #import/#pragma once files. 3 included exactly once. 2 max times a file is included. 3 #include/#include_next/#import. 0 #includes skipped due to the multi-include optimization. 1 framework lookups. 0 subframework lookups. *** Source Manager Stats: 3 files mapped, 3 mem buffers mapped. 37460 SLocEntry's allocated, 11215575B of Sloc address space used. 62 bytes of files mapped, 0 files with line #'s computed. for the same program. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125286 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-10Replace all uses of PathV1::exists with PathV2::fs::exists.Michael J. Spencer
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123150 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-17Replace all uses of PathV1::isAbsolute with PathV2::is_{absolute,relative}.Michael J. Spencer
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122087 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-29Merge System into Support.Michael J. Spencer
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120297 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-23now the FileManager has a FileSystemOpts ivar, stop threadingChris Lattner
FileSystemOpts through a ton of apis, simplifying a lot of code. This also fixes a latent bug in ASTUnit where it would invoke methods on FileManager without creating one in some code paths in cindextext. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120010 91177308-0d34-0410-b5e6-96231b3b80d8
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