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Caused by D56924, shouldn't use raw string literals in macros.
Differential Revision: https://reviews.llvm.org/D60326
llvm-svn: 357799
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Summary:
Use cases:
- a tool that dumps the heuristic used for each header in a project can
be used to evaluate changes to the heuristic
- we want to expose this information to users in clangd as it affects
accuracy/reliability of editor features
- express interpolation tests more directly
Reviewers: ilya-biryukov, klimek
Subscribers: ioeric, kadircet, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D60194
llvm-svn: 357770
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Summary: Adds a basic version of Transformer, a library supporting the concise specification of clang-based source-to-source transformations. A full discussion of the end goal can be found on the cfe-dev list with subject "[RFC] Easier source-to-source transformations with clang tooling".
Reviewers: ilya-biryukov
Reviewed By: ilya-biryukov
Subscribers: ioeric, ABataev, mgorny, jfb, jdoerfert, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D59376
llvm-svn: 357768
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manipulation.
Summary:
Introduces a utility library in Refactoring/ to collect routines related to
source-code manipulation. In this change, we move "extended-range" functions
from the FixIt library (in clangTooling) to this new library.
We need to use this functionality in Refactoring/ and cannot access it if it
resides in Tooling/, because that would cause clangToolingRefactor to depend on
clangTooling, which would be a circular dependency.
Reviewers: ilya-biryukov, ioeric
Reviewed By: ilya-biryukov
Subscribers: mgorny, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D60269
llvm-svn: 357764
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ObjCPropertyDecl should use the category interface as a context similar to what is done for methods.
Previously category methods would be printed as `::property`; now they are printed as `Class::property`.
llvm-svn: 357720
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Summary:
r357567 started to regroup include block for Google style; it was meant to apply
only for C++. This patch reverts this for ObjC.
Reviewers: ioeric
Reviewed By: ioeric
Subscribers: thakis, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D60263
llvm-svn: 357695
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transformations."
This reverts commit r357576 to fix the problem with the cyclic
dependencies between libTooling and libToolingRefactor.
llvm-svn: 357612
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Summary:
Currently clang-format would always emit a replacement for multi-block #include
sections if `IBS_Regroup`, even if the sections are correct:
```
% cat ~/test.h
#include <a.h>
#include "b.h"
% bin/clang-format --output-replacements-xml -style=google ~/test.h
<?xml version='1.0'?>
<replacements xml:space='preserve' incomplete_format='false'>
<replacement offset='0' length='30'>#include <a.h> #include "b.h"</replacement>
</replacements>
%
```
This change makes clang-format not emit replacements in this case.
The logic is similar to the one implemented for Java in r354452.
Reviewers: ioeric
Reviewed By: ioeric
Subscribers: cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D60199
llvm-svn: 357599
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Summary: Adds a basic version of Transformer, a library supporting the concise specification of clang-based source-to-source transformations. A full discussion of the end goal can be found on the cfe-dev list with subject "[RFC] Easier source-to-source transformations with clang tooling".
Reviewers: ilya-biryukov
Reviewed By: ilya-biryukov
Subscribers: mgorny, jfb, jdoerfert, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D59376
llvm-svn: 357576
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Summary:
Regrouping #includes in blocks separated by blank lines when sorting C++ #include
headers was implemented recently, and it has been preferred in Google's C++ style guide:
https://google.github.io/styleguide/cppguide.html#Names_and_Order_of_Includes
Reviewers: sammccall, klimek
Subscribers: cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D60116
llvm-svn: 357567
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llvm-svn: 357359
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if code contains statements that start with the word import
Summary:
Import sorting of java file, incorrectly move import statement to after a function beginning with the word import.
Make 1 character change to regular expression to ensure there is always at least one space/tab after the word import
Previously clang-format --style="LLVM" would format
```
import X;
class C {
void m() {
importFile();
}
}
```
as
```
class C {
void m() {
importFile();
import X;
}
}
```
Reviewers: djasper, klimek, reuk, JonasToth
Reviewed By: klimek
Subscribers: cfe-commits
Tags: #clang-tools-extra
Differential Revision: https://reviews.llvm.org/D59684
llvm-svn: 357345
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This patch aims to add support for the following rules from the JUCE coding standards:
- Always put a space before an open parenthesis that contains text - e.g. foo (123);
- Never put a space before an empty pair of open/close parenthesis - e.g. foo();
Patch by Reuben Thomas
Differential Revision: https://reviews.llvm.org/D55170
llvm-svn: 357344
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FileManager constructs a VFS in its constructor if it isn't passed one,
and there's no way to reset it. Make that contract clear by returning a
reference from its accessor.
https://reviews.llvm.org/D59388
llvm-svn: 357038
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Summary:
This option `AllowShortLambdasOnASingleLine` similar to the other `AllowShort*` options, but applied to C++ lambdas.
Reviewers: djasper, klimek
Reviewed By: klimek
Subscribers: MyDeveloperDay, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D57687
llvm-svn: 357027
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Summary:
Revision r356575 had the unfortunate consequence that now clang-format never
detects an ObjC call expression after `&&`.
This patch tries harder to distinguish between C++17 structured bindings and
ObjC call expressions and adds a few regression tests.
Reviewers: klimek
Reviewed By: klimek
Subscribers: cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D59774
llvm-svn: 356928
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This reverts commit r356835. This patch causes a regression, see the
test below:
verifyFormat("// Detached comment\n\n"
"// Leading comment\n"
"syntax = \"proto2\"; // trailing comment\n\n"
"// in foo.bar package\n"
"package foo.bar; // foo.bar package\n");
llvm-svn: 356912
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Summary:
Top-level "package" and "import" statements should generally be kept on one
line, for all languages.
Reviewers: sammccall, krasimir, MyDeveloperDay
Reviewed By: MyDeveloperDay
Subscribers: MyDeveloperDay, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D59627
Patch By: dchai (Donald Chai)
llvm-svn: 356835
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Summary:
Add two new options,
AllowAllArgumentsOnNextLine and
AllowAllConstructorInitializersOnNextLine. These mirror the existing
AllowAllParametersOfDeclarationOnNextLine and allow me to support an
internal style guide where I work. I think this would be generally
useful, some have asked for it on stackoverflow:
https://stackoverflow.com/questions/30057534/clang-format-binpackarguments-not-working-as-expected
https://stackoverflow.com/questions/38635106/clang-format-how-to-prevent-all-function-arguments-on-next-line
Reviewers: djasper, krasimir, MyDeveloperDay
Reviewed By: MyDeveloperDay
Subscribers: jkorous, MyDeveloperDay, aol-nnov, lebedev.ri, uohcsemaj, cfe-commits, klimek
Differential Revision: https://reviews.llvm.org/D40988
Patch By: russellmcc (Russell McClellan)
llvm-svn: 356834
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Summary: Similar to TypeScript, "enum" is not a reserved word.
Reviewers: krasimir, MyDeveloperDay
Reviewed By: MyDeveloperDay
Subscribers: MyDeveloperDay, cfe-commits
Tags: #clang, #clang-tools-extra
Differential Revision: https://reviews.llvm.org/D59629
Patch by: dchai (Donald Chai)
llvm-svn: 356833
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That is what i have been doing elsewhere in these tests, maybe that's it?
Maybe this helps with failing builds:
http://lab.llvm.org:8011/builders/clang-cmake-aarch64-quick/builds/17921
http://lab.llvm.org:8011/builders/clang-cmake-aarch64-global-isel/builds/10248
llvm-svn: 356749
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Similarly to r356614, -fopenmp=libomp needs to be used for some omp-related AST matching.
llvm-svn: 356700
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llvm-svn: 356679
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Summary: Exposes to the for ASTMatchers the interface/modelling
of OpenMP structured-block.
Reviewers: gribozavr, aaron.ballman, JonasToth, george.karpenkov
Reviewed By: gribozavr, aaron.ballman
Subscribers: guansong, jdoerfert, cfe-commits
Tags: #clang, #openmp
Differential Revision: https://reviews.llvm.org/D59463
llvm-svn: 356676
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Summary:
`OMPClause` is the base class, it is not descendant from **any**
other class, therefore for it to work with e.g.
`VariadicDynCastAllOfMatcher<>`, it needs to be handled here.
Reviewers: sbenza, bkramer, pcc, klimek, hokein, gribozavr, aaron.ballman, george.karpenkov
Reviewed By: gribozavr, aaron.ballman
Subscribers: guansong, jdoerfert, alexfh, ABataev, cfe-commits
Tags: #openmp, #clang
Differential Revision: https://reviews.llvm.org/D57112
llvm-svn: 356675
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Summary:
A simple matcher for `OMPExecutableDirective` Stmt type.
Split off from D57113.
Reviewers: gribozavr, aaron.ballman, JonasToth, george.karpenkov
Reviewed By: gribozavr, aaron.ballman
Subscribers: guansong, jdoerfert, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D59453
llvm-svn: 356674
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Summary:
This revision adds basic support for formatting C# files with clang-format, I know the barrier to entry is high here so I'm sending this revision in to test the water as to whether this might be something we'd consider landing.
Tracking in Bugzilla as:
https://bugs.llvm.org/show_bug.cgi?id=40850
Justification:
C# code just looks ugly in comparison to the C++ code in our source tree which is clang-formatted.
I've struggled with Visual Studio reformatting to get a clean and consistent style, I want to format our C# code on saving like I do now for C++ and i want it to have the same style as defined in our .clang-format file, so it consistent as it can be with C++. (Braces/Breaking/Spaces/Indent etc..)
Using clang format without this patch leaves the code in a bad state, sometimes when the BreakStringLiterals is set, it fails to compile.
Mostly the C# is similar to Java, except instead of JavaAnnotations I try to reuse the TT_AttributeSquare.
Almost the most valuable portion is to have a new Language in order to partition the configuration for C# within a common .clang-format file, with the auto detection on the .cs extension. But there are other C# specific styles that could be added later if this is accepted. in particular how `{ set;get }` is formatted.
Reviewers: djasper, klimek, krasimir, benhamilton, JonasToth
Reviewed By: klimek
Subscribers: llvm-commits, mgorny, jdoerfert, cfe-commits
Tags: #clang, #clang-tools-extra
Differential Revision: https://reviews.llvm.org/D58404
llvm-svn: 356662
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Summary: rL356570 introduced a test which only passes with the default openmp library, libomp, and fails with other openmp libraries, such as libgomp. Explicitly choose libomp.
Reviewers: lebedev.ri
Subscribers: guansong, jdoerfert, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D59609
llvm-svn: 356614
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Summary:
The option BeforeHash added to IndentPPDirectives.
Fixes Bug 36019. https://bugs.llvm.org/show_bug.cgi?id=36019
Reviewers: djasper, klimek, krasimir, sammccall, mprobst, Nicola, MyDeveloperDay
Reviewed By: klimek, MyDeveloperDay
Subscribers: kadircet, MyDeveloperDay, mnussbaum, geleji, ufna, cfe-commits
Patch by to-mix.
Differential Revision: https://reviews.llvm.org/D52150
llvm-svn: 356613
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Summary:
Sometime after 6.0.0 and the current trunk 9.0.0 the following code would be considered as objective C and not C++
Reported by: https://twitter.com/mattgodbolt/status/1096188576503644160
$ clang-format.exe test.h
Configuration file(s) do(es) not support Objective-C: C:\clang\build\.clang-format
--- test.h --
```
std::vector<std::pair<std::string,std::string>> C;
void foo()
{
for (auto && [A,B] : C)
{
std::string D = A + B;
}
}
```
The following code fixes this issue of incorrect detection
Reviewers: djasper, klimek, JonasToth, reuk
Reviewed By: klimek
Subscribers: cfe-commits
Tags: #clang-tools-extra
Differential Revision: https://reviews.llvm.org/D59546
llvm-svn: 356575
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Summary:
https://www.openmp.org/wp-content/uploads/OpenMP-API-Specification-5.0.pdf, page 3:
```
structured block
For C/C++, an executable statement, possibly compound, with a single entry at the
top and a single exit at the bottom, or an OpenMP construct.
COMMENT: See Section 2.1 on page 38 for restrictions on structured
blocks.
```
```
2.1 Directive Format
Some executable directives include a structured block. A structured block:
• may contain infinite loops where the point of exit is never reached;
• may halt due to an IEEE exception;
• may contain calls to exit(), _Exit(), quick_exit(), abort() or functions with a
_Noreturn specifier (in C) or a noreturn attribute (in C/C++);
• may be an expression statement, iteration statement, selection statement, or try block, provided
that the corresponding compound statement obtained by enclosing it in { and } would be a
structured block; and
Restrictions
Restrictions to structured blocks are as follows:
• Entry to a structured block must not be the result of a branch.
• The point of exit cannot be a branch out of the structured block.
C / C++
• The point of entry to a structured block must not be a call to setjmp().
• longjmp() and throw() must not violate the entry/exit criteria.
```
Of particular note here is the fact that OpenMP structured blocks are as-if `noexcept`,
in the same sense as with the normal `noexcept` functions in C++.
I.e. if throw happens, and it attempts to travel out of the `noexcept` function
(here: out of the current structured-block), then the program terminates.
Now, one of course can say that since it is explicitly prohibited by the Specification,
then any and all programs that violate this Specification contain undefined behavior,
and are unspecified, and thus no one should care about them. Just don't write broken code /s
But i'm not sure this is a reasonable approach.
I have personally had oss-fuzz issues of this origin - exception thrown inside
of an OpenMP structured-block that is not caught, thus causing program termination.
This issue isn't all that hard to catch, it's not any particularly different from
diagnosing the same situation with the normal `noexcept` function.
Now, clang static analyzer does not presently model exceptions.
But clang-tidy has a simplisic [[ https://clang.llvm.org/extra/clang-tidy/checks/bugprone-exception-escape.html | bugprone-exception-escape ]] check,
and it is even refactored as a `ExceptionAnalyzer` class for reuse.
So it would be trivial to use that analyzer to check for
exceptions escaping out of OpenMP structured blocks. (D59466)
All that sounds too great to be true. Indeed, there is a caveat.
Presently, it's practically impossible to do. To check a OpenMP structured block
you need to somehow 'get' the OpenMP structured block, and you can't because
it's simply not modelled in AST. `CapturedStmt`/`CapturedDecl` is not it's representation.
Now, it is of course possible to write e.g. some AST matcher that would e.g.
match every OpenMP executable directive, and then return the whatever `Stmt` is
the structured block of said executable directive, if any.
But i said //practically//. This isn't practical for the following reasons:
1. This **will** bitrot. That matcher will need to be kept up-to-date,
and refreshed with every new OpenMP spec version.
2. Every single piece of code that would want that knowledge would need to
have such matcher. Well, okay, if it is an AST matcher, it could be shared.
But then you still have `RecursiveASTVisitor` and friends.
`2 > 1`, so now you have code duplication.
So it would be reasonable (and is fully within clang AST spirit) to not
force every single consumer to do that work, but instead store that knowledge
in the correct, and appropriate place - AST, class structure.
Now, there is another hoop we need to get through.
It isn't fully obvious //how// to model this.
The best solution would of course be to simply add a `OMPStructuredBlock` transparent
node. It would be optimal, it would give us two properties:
* Given this `OMPExecutableDirective`, what's it OpenMP structured block?
* It is trivial to check whether the `Stmt*` is a OpenMP structured block (`isa<OMPStructuredBlock>(ptr)`)
But OpenMP structured block isn't **necessarily** the first, direct child of `OMP*Directive`.
(even ignoring the clang's `CapturedStmt`/`CapturedDecl` that were inserted inbetween).
So i'm not sure whether or not we could re-create AST statements after they were already created?
There would be other costs to a new AST node: https://bugs.llvm.org/show_bug.cgi?id=40563#c12
```
1. You will need to break the representation of loops. The body should be replaced by the "structured block" entity.
2. You will need to support serialization/deserialization.
3. You will need to support template instantiation.
4. You will need to support codegen and take this new construct to account in each OpenMP directive.
```
Instead, there **is** an functionally-equivalent, alternative solution, consisting of two parts.
Part 1:
* Add a member function `isStandaloneDirective()` to the `OMPExecutableDirective` class,
that will tell whether this directive is stand-alone or not, as per the spec.
We need it because we can't just check for the existance of associated statements,
see code comment.
* Add a member function `getStructuredBlock()` to the OMPExecutableDirective` class itself,
that assert that this is not a stand-alone directive, and either return the correct loop body
if this is a loop-like directive, or the captured statement.
This way, given an `OMPExecutableDirective`, we can get it's structured block.
Also, since the knowledge is ingrained into the clang OpenMP implementation,
it will not cause any duplication, and //hopefully// won't bitrot.
Great we achieved 1 of 2 properties of `OMPStructuredBlock` approach.
Thus, there is a second part needed:
* How can we check whether a given `Stmt*` is `OMPStructuredBlock`?
Well, we can't really, in general. I can see this workaround:
```
class FunctionASTVisitor : public RecursiveASTVisitor<FunctionASTVisitor> {
using Base = RecursiveASTVisitor<FunctionASTVisitor>;
public:
bool VisitOMPExecDir(OMPExecDir *D) {
OmpStructuredStmts.emplace_back(D.getStructuredStmt());
}
bool VisitSOMETHINGELSE(???) {
if(InOmpStructuredStmt)
HI!
}
bool TraverseStmt(Stmt *Node) {
if (!Node)
return Base::TraverseStmt(Node);
if (OmpStructuredStmts.back() == Node)
++InOmpStructuredStmt;
Base::TraverseStmt(Node);
if (OmpStructuredStmts.back() == Node) {
OmpStructuredStmts.pop_back();
--InOmpStructuredStmt;
}
return true;
}
std::vector<Stmt*> OmpStructuredStmts;
int InOmpStructuredStmt = 0;
};
```
But i really don't see using it in practice.
It's just too intrusive; and again, requires knowledge duplication.
.. but no. The solution lies right on the ground.
Why don't we simply store this `i'm a openmp structured block` in the bitfield of the `Stmt` itself?
This does not appear to have any impact on the memory footprint of the clang AST,
since it's just a single extra bit in the bitfield. At least the static assertions don't fail.
Thus, indeed, we can achieve both of the properties without a new AST node.
We can cheaply set that bit right in sema, at the end of `Sema::ActOnOpenMPExecutableDirective()`,
by just calling the `getStructuredBlock()` that we just added.
Test coverage that demonstrates all this has been added.
This isn't as great with serialization though. Most of it does not use abbrevs,
so we do end up paying the full price (4 bytes?) instead of a single bit.
That price, of course, can be reclaimed by using abbrevs.
In fact, i suspect that //might// not just reclaim these bytes, but pack these PCH significantly.
I'm not seeing a third solution. If there is one, it would be interesting to hear about it.
("just don't write code that would require `isa<OMPStructuredBlock>(ptr)`" is not a solution.)
Fixes [[ https://bugs.llvm.org/show_bug.cgi?id=40563 | PR40563 ]].
Reviewers: ABataev, rjmccall, hfinkel, rsmith, riccibruno, gribozavr
Reviewed By: ABataev, gribozavr
Subscribers: mgorny, aaron.ballman, steveire, guansong, jfb, jdoerfert, cfe-commits
Tags: #clang, #openmp
Differential Revision: https://reviews.llvm.org/D59214
llvm-svn: 356570
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Summary:
Redecl chains of function template specializations are not handled well
currently. We want to handle them similarly to functions, i.e. try to
keep the structure of the original AST as much as possible. The aim is
to not squash a prototype with a definition, rather we create both and
put them in a redecl chain.
Reviewers: a_sidorin, shafik, a.sidorin
Subscribers: rnkovacs, dkrupp, Szelethus, gamesh411, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D58668
llvm-svn: 356455
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Summary:
Redecl chains of class template specializations are not handled well
currently. We want to handle them similarly to functions, i.e. try to
keep the structure of the original AST as much as possible. The aim is
to not squash a prototype with a definition, rather we create both and
put them in a redecl chain.
Reviewers: a_sidorin, shafik, a.sidorin
Subscribers: rnkovacs, dkrupp, Szelethus, gamesh411, jdoerfert, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D58673
llvm-svn: 356452
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Addresses PR40999 https://bugs.llvm.org/show_bug.cgi?id=40999
Private fields and methods in JavaScript would get incorrectly indented
(it sees them as preprocessor directives and hence left aligns them)
In this revision `#identifier` tokens `tok::hash->tok::identifier` are
merged into a single new token `tok::identifier` with the `#` contained
inside the TokenText.
Before:
```
class Example {
pub = 1;
static pub2 = "foo";
static #priv2 = "bar";
method() { this.#priv = 5; }
static staticMethod() {
switch (this.#priv) {
case '1':
break;
}
}
this.#privateMethod(); // infinite loop
}
static #staticPrivateMethod() {}
}
```
After this fix the code will be correctly indented
```
class Example {
pub = 1;
#priv = 2;
static pub2 = "foo";
static #priv2 = "bar";
method() { this.#priv = 5; }
static staticMethod() {
switch (this.#priv) {
case '1':
#priv = 3;
break;
}
}
#privateMethod() {
this.#privateMethod(); // infinite loop
}
static #staticPrivateMethod() {}
}
```
NOTE: There might be some JavaScript code out there which uses the C
processor to preprocess .js files
http://www.nongnu.org/espresso/js-cpp.html. It's not clear how this
revision or even private fields and methods would interact.
Patch originally by MyDeveloperDays (thanks!).
llvm-svn: 356449
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Before:
const x = veryLongIdentifier
`hello`;
After:
const x =
veryLongIdentifier`hello`;
While it's allowed to have the template string and tag identifier
separated by a line break, currently the clang-format output is not
stable when a break is forced. Additionally, disallowing a line break
makes it clear that the identifier is actually a tag for a template
string.
Patch originally by mitchellwills (thanks!).
llvm-svn: 356447
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Summary:
Previously, when the renamed spelling is ambiguous, we simply use the
full-qualfied name (with leading "::"). This patch makes it try adding
additional specifiers one at a time until name is no longer ambiguous,
which allows us to find better disambuguated spelling.
Reviewers: kadircet, gribozavr
Subscribers: jdoerfert, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D59487
llvm-svn: 356446
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member ptr types
We already handle pointers and references, member ptrs are just another
special case. Fixes PR40732.
Differential Revision: https://reviews.llvm.org/D59387
llvm-svn: 356250
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Summary:
Import type location in case of TypeSpec and TypeSpecWithTemplate.
Without this fix the imported NespedNameSpecifierLoc will have an
invalid begin location.
Reviewers: a.sidorin, shafik, a_sidorin, martong
Reviewed By: a_sidorin
Subscribers: rnkovacs, jdoerfert, dkrupp, martong, Szelethus, gamesh411, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D55358
llvm-svn: 356151
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getPredefinedStyle()
rC355158 added an optional language parameter to getLLVMStyle(), but this parameter was not used in getPredefinedStyle(). Because unit tests directly specify the style, this codepath wasn't tested. Add an additional unit test for getStyle().
llvm-svn: 356099
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Summary:
Introduces variants of `getText` and `getSourceRange` that extract the source text of an AST node potentially with a trailing token.
Some of the new functions manipulate `CharSourceRange`s, rather than `SourceRange`s, because they document and dynamically enforce their type. So, this revision also updates the corresponding existing FixIt functions to manipulate `CharSourceRange`s. This change is not strictly necessary, but seems like the correct choice, to keep the API self-consistent.
This revision is the first in a series intended to improve the abstractions available to users for writing source-to-source transformations. A full discussion of the end goal can be found on the cfe-dev list with subject "[RFC] Easier source-to-source transformations with clang tooling".
Reviewers: ilya-biryukov
Reviewed By: ilya-biryukov
Subscribers: kimgr, riccibruno, JonasToth, jdoerfert, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D58556
llvm-svn: 356095
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an "else" statement is present
Summary:
Addressing: PR25010 - https://bugs.llvm.org/show_bug.cgi?id=25010
Code like:
```
if(true) var++;
else {
var--;
}
```
is reformatted to be
```
if (true)
var++;
else {
var--;
}
```
Even when `AllowShortIfStatementsOnASingleLine` is true
The following revision comes from a +1'd suggestion in the PR to support AllowShortIfElseStatementsOnASingleLine
This suppresses the clause prevents the merging of the if when there is a compound else
Reviewers: klimek, djasper, JonasToth, alexfh, krasimir, reuk
Reviewed By: reuk
Subscribers: reuk, Higuoxing, jdoerfert, cfe-commits
Tags: #clang-tools-extra
Differential Revision: https://reviews.llvm.org/D59087
llvm-svn: 356031
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working if an "else" statement is present"
This reverts commit b358cbb9b78389e20f7be36e1a98e26515c3ecce.
llvm-svn: 356030
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an "else" statement is present
Summary:
Addressing: PR25010 - https://bugs.llvm.org/show_bug.cgi?id=25010
Code like:
```
if(true) var++;
else {
var--;
}
```
is reformatted to be
```
if (true)
var++;
else {
var--;
}
```
Even when `AllowShortIfStatementsOnASingleLine` is true
The following revision comes from a +1'd suggestion in the PR to support AllowShortIfElseStatementsOnASingleLine
This suppresses the clause prevents the merging of the if when there is a compound else
Reviewers: klimek, djasper, JonasToth, alexfh, krasimir, reuk
Reviewed By: reuk
Subscribers: reuk, Higuoxing, jdoerfert, cfe-commits
Tags: #clang-tools-extra
Differential Revision: https://reviews.llvm.org/D59087
llvm-svn: 356029
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Add an option to cache the generated PCH in the ModuleCache when
emitting it. This protects clients that build PCHs and read them in the
same process, allowing them to avoid race conditions between parallel
jobs the same way that Clang's implicit module build system does.
rdar://problem/48740787
llvm-svn: 355950
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Summary:
The revision r355434 had the unfortunate side-effect that it started to
recognize certain ObjC expressions with a call subexpression followed by a
`a->b` subexpression as C++ lambda expressions.
This patch adds a bit of logic to handle these cases and documents them in
tests.
The commented-out test cases in the new test suite are ones that were
problematic before r355434.
Reviewers: MyDeveloperDay, gribozavr
Reviewed By: MyDeveloperDay, gribozavr
Subscribers: MyDeveloperDay, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D59210
llvm-svn: 355831
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Another fixup for r355778 for Windows bots, this time to stop
accidentally relying on allocator behaviour for the test to pass.
llvm-svn: 355780
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Leverage the InMemoryModuleCache to invalidate a module the first time
it fails to import (and to lock a module as soon as it's built or
imported successfully). For implicit module builds, this optimizes
importing deep graphs where the leaf module is out-of-date; see example
near the end of the commit message.
Previously the cache finalized ("locked in") all modules imported so far
when starting a new module build. This was sufficient to prevent
loading two versions of the same module, but was somewhat arbitrary and
hard to reason about.
Now the cache explicitly tracks module state, where each module must be
one of:
- Unknown: module not in the cache (yet).
- Tentative: module in the cache, but not yet fully imported.
- ToBuild: module found on disk could not be imported; need to build.
- Final: module in the cache has been successfully built or imported.
Preventing repeated failed imports avoids variation in builds based on
shifting filesystem state. Now it's guaranteed that a module is loaded
from disk exactly once. It now seems safe to remove
FileManager::invalidateCache, but I'm leaving that for a later commit.
The new, precise logic uncovered a pre-existing problem in the cache:
the map key is the module filename, and different contexts use different
filenames for the same PCM file. (In particular, the test
Modules/relative-import-path.c does not build without this commit.
r223577 started using a relative path to describe a module's base
directory when importing it within another module. As a result, the
module cache sees an absolute path when (a) building the module or
importing it at the top-level, and a relative path when (b) importing
the module underneath another one.)
The "obvious" fix is to resolve paths using FileManager::getVirtualFile
and change the map key for the cache to a FileEntry, but some contexts
(particularly related to ASTUnit) have a shorter lifetime for their
FileManager than the InMemoryModuleCache. This is worth pursuing
further in a later commit; perhaps by tying together the FileManager and
InMemoryModuleCache lifetime, or moving the in-memory PCM storage into a
VFS layer.
For now, use the PCM's base directory as-written for constructing the
filename to check the ModuleCache.
Example
=======
To understand the build optimization, first consider the build of a
module graph TU -> A -> B -> C -> D with an empty cache:
TU builds A'
A' builds B'
B' builds C'
C' builds D'
imports D'
B' imports C'
imports D'
A' imports B'
imports C'
imports D'
TU imports A'
imports B'
imports C'
imports D'
If we build TU again, where A, B, C, and D are in the cache and D is
out-of-date, we would previously get this build:
TU imports A
imports B
imports C
imports D (out-of-date)
TU builds A'
A' imports B
imports C
imports D (out-of-date)
builds B'
B' imports C
imports D (out-of-date)
builds C'
C' imports D (out-of-date)
builds D'
imports D'
B' imports C'
imports D'
A' imports B'
imports C'
imports D'
TU imports A'
imports B'
imports C'
imports D'
After this commit, we'll immediateley invalidate A, B, C, and D when we
first observe that D is out-of-date, giving this build:
TU imports A
imports B
imports C
imports D (out-of-date)
TU builds A' // The same graph as an empty cache.
A' builds B'
B' builds C'
C' builds D'
imports D'
B' imports C'
imports D'
A' imports B'
imports C'
imports D'
TU imports A'
imports B'
imports C'
imports D'
The new build matches what we'd naively expect, pretty closely matching
the original build with the empty cache.
rdar://problem/48545366
llvm-svn: 355778
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Change MemoryBufferCache to InMemoryModuleCache, moving it from Basic to
Serialization. Another patch will start using it to manage module build
more explicitly, but this is split out because it's mostly mechanical.
Because of the move to Serialization we can no longer abuse the
Preprocessor to forward it to the ASTReader. Besides the rename and
file move, that means Preprocessor::Preprocessor has one fewer parameter
and ASTReader::ASTReader has one more.
llvm-svn: 355777
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llvm-svn: 355683
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Summary:
GetAllFiles interface returns absolute paths, but keeps dots and dot
dots. This patch makes those paths canonical by deleting them.
Reviewers: hokein
Subscribers: cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D59079
llvm-svn: 355678
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