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ClangExpressionDeclMap::FindGlobalVariable
We never pass something else than a nullptr as the 'type' so the related code in this function is never reached.
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ClangExpressionDeclMap
This adds a unit test for looking up persistent declarations in the scratch AST
context. Also adds the `GetPersistentDecl` hook to the ClangExpressionDeclMap
that this unit test can emulate looking up persistent variables without having
a lldb_private::Target.
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a Target and add basic unit test
The ClangExpressionDeclMap should be testable from a unit test. This is currently
impossible as they have both dependencies on Target/ExecutionContext from their
constructor. This patch allows constructing these classes without an active Target
and adds the missing tests for running without a target that we can do at least
a basic lookup test without crashing.
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ClangExpressionDeclMap::LookupFunction
This code was just creating a new SymbolContextList with any found functions
in the front and orders them by how close they are to the current frame.
This refactors this code into its own function to make this more obvious.
Doesn't do any other changes to the code, so this is NFC.
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Same as in commit e7cc833ddafdca10be4ef1322ab96ffee774045b but with $__lldb_objc_class.
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ClangExpressionDeclMap
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own function
Searching persistent decls is a small subset of the things
FindExternalVisibleDecls does. It should be its own function instead
of being encapsulated in this `do { } while(false);` pattern.
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Summary:
This is some really shady code. It's supposed to kick in after an expression already failed and then try to look
up "unknown types" that for some undocumented reason can't be resolved during/before parsing. Beside the
fact that we never mark any type as `EVUnknownType` in either swift-lldb or lldb (which means this code is unreachable),
this code doesn't even make the expression evaluation succeed if if would ever be executed but instead seems
to try to load more debug info that maybe any following expression evaluations might succeed.
This patch removes ClangExpressionDeclMap::ResolveUnknownTypes and the related data structures/checks/calls.
Reviewers: davide
Reviewed By: davide
Subscribers: aprantl, abidh, JDevlieghere, lldb-commits
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D70388
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Three uses of try_lock intentionally ignore the result, as explained in
the comment. Make that explicit with a void cast.
Add what appears to be a missing return in the clang expression parser
code. It's a functional change, but presumably the right one.
Differential Revision: https://reviews.llvm.org/D70281
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Now that we've moved to C++14, we no longer need the llvm::make_unique
implementation from STLExtras.h. This patch is a mechanical replacement
of (hopefully) all the llvm::make_unique instances across the monorepo.
Differential revision: https://reviews.llvm.org/D66259
llvm-svn: 368933
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Summary:
NFC = [[ https://llvm.org/docs/Lexicon.html#nfc | Non functional change ]]
This commit is the result of modernizing the LLDB codebase by using
`nullptr` instread of `0` or `NULL`. See
https://clang.llvm.org/extra/clang-tidy/checks/modernize-use-nullptr.html
for more information.
This is the command I ran and I to fix and format the code base:
```
run-clang-tidy.py \
-header-filter='.*' \
-checks='-*,modernize-use-nullptr' \
-fix ~/dev/llvm-project/lldb/.* \
-format \
-style LLVM \
-p ~/llvm-builds/debug-ninja-gcc
```
NOTE: There were also changes to `llvm/utils/unittest` but I did not
include them because I felt that maybe this library shall be updated in
isolation somehow.
NOTE: I know this is a rather large commit but it is a nobrainer in most
parts.
Reviewers: martong, espindola, shafik, #lldb, JDevlieghere
Reviewed By: JDevlieghere
Subscribers: arsenm, jvesely, nhaehnle, hiraditya, JDevlieghere, teemperor, rnkovacs, emaste, kubamracek, nemanjai, ki.stfu, javed.absar, arichardson, kbarton, jrtc27, MaskRay, atanasyan, dexonsmith, arphaman, jfb, jsji, jdoerfert, lldb-commits, llvm-commits
Tags: #lldb, #llvm
Differential Revision: https://reviews.llvm.org/D61847
llvm-svn: 361484
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A lot of comments in LLDB are surrounded by an ASCII line to delimit the
begging and end of the comment.
Its use is not really consistent across the code base, sometimes the
lines are longer, sometimes they are shorter and sometimes they are
omitted. Furthermore, it looks kind of weird with the 80 column limit,
where the comment actually extends past the line, but not by much.
Furthermore, when /// is used for Doxygen comments, it looks
particularly odd. And when // is used, it incorrectly gives the
impression that it's actually a Doxygen comment.
I assume these lines were added to improve distinguishing between
comments and code. However, given that todays editors and IDEs do a
great job at highlighting comments, I think it's worth to drop this for
the sake of consistency. The alternative is fixing all the
inconsistencies, which would create a lot more churn.
Differential revision: https://reviews.llvm.org/D60508
llvm-svn: 358135
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This changes '@' prefix to '\'.
llvm-svn: 355841
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My apologies for the large patch. With the exception of ConstString.h
itself it was entirely produced by sed.
ConstString has exactly one const char * data member, so passing a
ConstString by reference is not any more efficient than copying it by
value. In both cases a single pointer is passed. But passing it by
value makes it harder to accidentally return the address of a local
object.
(This fixes rdar://problem/48640859 for the Apple folks)
Differential Revision: https://reviews.llvm.org/D59030
llvm-svn: 355553
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Summary:
This patch adds support of expression evaluation in a context of some object.
Consider the following example:
```
struct S {
int a = 11;
int b = 12;
};
int main() {
S s;
int a = 1;
int b = 2;
// We have stopped here
return 0;
}
```
This patch allows to do something like that:
```
lldb.frame.FindVariable("s").EvaluateExpression("a + b")
```
and the result will be `33` (not `3`) because fields `a` and `b` of `s` will be
used (not locals `a` and `b`).
This is achieved by replacing of `this` type and object for the expression. This
has some limitations: an expression can be evaluated only for values located in
the debuggee process memory (they must have an address of `eAddressTypeLoad`
type).
Reviewers: teemperor, clayborg, jingham, zturner, labath, davide, spyffe, serge-sans-paille
Reviewed By: jingham
Subscribers: abidh, lldb-commits, leonid.mashinskiy
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D55318
llvm-svn: 353149
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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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This patch removes the comments grouping header includes. They were
added after running IWYU over the LLDB codebase. However they add little
value, are often outdates and burdensome to maintain.
llvm-svn: 346626
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llvm-svn: 339204
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This brings the LLDB configuration closer to LLVM's and removes visual
clutter in the source code by removing the @brief commands from
comments.
This patch also reflows the paragraphs in all doxygen comments.
See also https://reviews.llvm.org/D46290.
Differential Revision: https://reviews.llvm.org/D46321
llvm-svn: 331373
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This setting can be enabled like this at the target level:
(lldb) settings set target.experimental.use-modern-type-lookup true
This causes several new behaviors in the Clang expression parser:
- It completely disables use of ClangASTImporter. None are created
at all, and all users of it are now conditionalized on its
presence.
- It instead constructs a per-expression ExternalASTMerger, which
exists inside Clang and contains much of the type completion
logic that hitherto lived in ExternalASTSource,
ClangExpressionDeclMap, and ClangASTImporter.
- The expression parser uses this Merger as a backend for copying
and completing types.
- It also constructs a persistent ExternalASTMerger which is
connected to the Target's persistent AST context.
This is a major chunk of LLDB functionality moved into Clang. It
can be tested in two ways:
1. For an individual debug session, enable the setting before
running a target.
2. For the testsuite, change the option to be default-true. This
is done in Target.cpp's g_experimental_properties. The
testsuite is not yet clean with this, so I have not committed
that switch.
I have filed a Bugzilla for extending the testsuite to allow
custom settings for all tests:
https://bugs.llvm.org/show_bug.cgi?id=34771
I have also filed a Bugzilla for fixing the remaining testsuite
failures with this setting enabled:
https://bugs.llvm.org/show_bug.cgi?id=34772
llvm-svn: 314458
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When it resolves symbol-only variables, the expression parser
currently looks only in the global module list. It should prefer
the current module.
I've fixed that behavior by making it search the current module
first, and only search globally if it finds nothing. I've also
added a test case.
After review, I moved the core of the lookup algorithm into
SymbolContext for use by other code that needs it.
Thanks to Greg Clayton and Pavel Labath for their help.
Differential Revision: https://reviews.llvm.org/D33083
llvm-svn: 303223
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llvm-svn: 285834
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*** to conform to clang-format’s LLVM style. This kind of mass change has
*** two obvious implications:
Firstly, merging this particular commit into a downstream fork may be a huge
effort. Alternatively, it may be worth merging all changes up to this commit,
performing the same reformatting operation locally, and then discarding the
merge for this particular commit. The commands used to accomplish this
reformatting were as follows (with current working directory as the root of
the repository):
find . \( -iname "*.c" -or -iname "*.cpp" -or -iname "*.h" -or -iname "*.mm" \) -exec clang-format -i {} +
find . -iname "*.py" -exec autopep8 --in-place --aggressive --aggressive {} + ;
The version of clang-format used was 3.9.0, and autopep8 was 1.2.4.
Secondly, “blame” style tools will generally point to this commit instead of
a meaningful prior commit. There are alternatives available that will attempt
to look through this change and find the appropriate prior commit. YMMV.
llvm-svn: 280751
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Since IRExecutionUnit is now capable of looking up symbols, and the JIT is up to
the task of generating the appropriate relocations, we don't need to do all the
work that IRForTarget used to do to fixup symbols at the IR level.
We also don't need to allocate data manually (with its attendant bugs) because
the JIT is capable of doing so without crashing.
We also don't need the awkward lldb.call.realName metadata to determine what
calls are objc_msgSend, because they now just reference objc_msgSend.
To make this work, we ensure that we recognize which symbols are extern "C" and
report them to the compiler as such. We also report the full Decl of functions
rather than just making up top-level functions with the appropriate types.
This should not break any testcases, but let me know if you run into any issues.
<rdar://problem/22864926>
llvm-svn: 260768
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Summary: This relands r259810 with fix for failures on Mac.
Reviewers: spyffe, tfiala
Subscribers: tfiala, lldb-commits
Differential Revision: http://reviews.llvm.org/D16900
llvm-svn: 259902
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Summary:
This reverts commit 8af14b5f9af68c31ac80945e5b5d56f0a14b38e4.
Reverting as it breaks a few tests on Mac.
Reviewers: spyffe
Subscribers: lldb-commits
Differential Revision: http://reviews.llvm.org/D16895
llvm-svn: 259823
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Summary:
While evaluating expressions when stopped in a class method, there was a
problem of member variables hiding local variables. This was happening
because, in the context of a method, clang already knew about member
variables with their name and assumed that they were the only variables
with those names in scope. Consequently, clang never checks with LLDB
about the possibility of local variables with the same name and goes
wrong. This change addresses the problem by using an artificial
namespace "$__lldb_local_vars". All local variables in scope are
declared in the "$__lldb_expr" method as follows:
using $__lldb_local_vars::<local var 1>;
using $__lldb_local_vars::<local var 2>;
...
This hides the member variables with the same name and forces clang to
enquire about the variables which it thinks are declared in
$__lldb_local_vars. When LLDB notices that clang is enquiring about
variables in $__lldb_local_vars, it looks up local vars and conveys
their information if found. This way, member variables do not hide local
variables, leading to correct evaluation of expressions.
A point to keep in mind is that the above solution does not solve the
problem for one specific case:
namespace N
{
int a;
}
class A
{
public:
void Method();
int a;
};
void
A::Method()
{
using N::a;
...
// Since the above solution only touches locals, it does not
// force clang to enquire about "a" coming from namespace N.
}
Reviewers: clayborg, spyffe
Subscribers: lldb-commits
Differential Revision: http://reviews.llvm.org/D16746
llvm-svn: 259810
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in DWARF as a member of a class, but it has a "this" parameter. Specifically,
*this needs to have the LLDB expression added as a method.
This fixes TestWithLimitDebugInfo.
llvm-svn: 251151
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The concept here is that languages may have different ways of communicating
results. In particular, languages may have different names for their result
variables and in fact may have multiple types of result variables (e.g.,
error results). Materializer was tied to one specific model of result handling.
Instead, now UserExpressions can register their own handlers for the result
variables they inject. This allows language-specific code in Materializer to
be moved into the expression parser plug-in, and it simplifies Materializer.
These delegates are subclasses of PersistentVariableDelegate.
PersistentVariableDelegate can provide the name of the result variable, and is
notified when the result variable is populated. It can also be used to touch
persistent variables if need be, updating language-specific state. The
UserExpression owns the delegate and can decide on its result based on
consulting all of its (potentially multiple) delegates.
The user expression itself now makes the determination of what the final result
of the expression is, rather than relying on the Materializer, and I've added a
virtual function to UserExpression to allow this.
llvm-svn: 249233
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There are still a bunch of dependencies on the plug-in, but this helps to
identify them.
There are also a few more bits we need to move (and abstract, for example the
ClangPersistentVariables).
llvm-svn: 248612
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