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We don't need the intepreter to store clang's state. We can use a separate object
for that which allows to be reused.
Provide *much* shorter and cleaner implementation.
Implementation of .files moved in the Interpreter.cpp
storeState now calls three functions: dumpAST(), dumpLookup(), printIncludedFiles().
compareState now calls three functions: compareAST(), compareLookup(), compareIncludedFiles().
It's working for the included files and the AST, and it needs a new patch for
being able to dump the lookup tables (we cannot use dumpLookups() for the moment).
There are cases where cling needs to 'rollback' its state to a previous one.
Examples for that are cling's error recovery and code unloading. This can become
easily tricky to implement. One step reducing the complexity is the verification
of the 'interesting' data structures.
Implement .storeState and .compareState commands, which dump the internal compiler
data structures like AST (implemented), included files (in progress) and lookup
tables (unimplemented yet). The information is dumped into a file and then that
file is diff-ed to the one taken with .compareState. If they were identical all
files are deleted otherwise a .diff file with the differences remains for debug.
This is what we already do with constructor and when we lookup and search
for destructor we want the actually destructor implementation not the
one which also does the delete.
Track down (almost) all places that might trigger deserialization of declarations
and wrap it with cling::PushTransactionRAII. I could solve it much more elegantly
by putting that RAII in the callback of the ExternalASTSource, but I wanted to be
verbose and denote all the places that trigger deserializations in ROOT. This
will help us in future optimize this code, because we want to deserialize as
rare as possible.
This should make roottest a bit happier.
Parsing code in ROOT can lead to lookups which open a nested transactions. Ending
the current transaction in these cases is misleading because usually the
transaction that is expected to be ended is different.
Add an argument to endTransaction to disambiguate. Please note that this fixes
the regular cases of ROOT autoloading.
One of the remaining issues is autoloading of classes, which are passed in as
template arguments. The second remaining is autoloading of classes residing in
unnamed namespaces. Eg. MyNamespace::MyClass, where the diagnostic is issued upon
seeing that MyNamespace is unknown.
Simplify some of the patches by reverting some of the changed llvm / clang files to the original ones.
git-svn-id: http://root.cern.ch/svn/root/trunk@49363 27541ba8-7e3a-0410-8455-c3a389f83636
Parser::Scope versus Sema::DeclContext are now checked for cross-vailidity.
Emit the TU-transaction explicitly instead of relying on a first transaction.
The typename extraction now takes a stream instead of a string to write to.
The llvm::Linker has much reduced functionality; use llvm::sys::Path instead to find dynamic libraries.
git-svn-id: http://root.cern.ch/svn/root/trunk@49325 27541ba8-7e3a-0410-8455-c3a389f83636
