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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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The new guideline is to qualify with 'llvm::' explicitly both in
'.h' and '.cpp' files. This simplifies moving the code between
header and source files and is easier to keep consistent.
llvm-svn: 350531
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Standardize on the most common namespace setup in our *.cpp files:
using namespace llvm;
namespace clang {
namespace clangd {
void foo(StringRef) { ... }
And remove redundant llvm:: qualifiers. (Except for cases like
make_unique where this causes problems with std:: and ADL).
This choice is pretty arbitrary, but some broad consistency is nice.
This is going to conflict with everything. Sorry :-/
Squash the other configurations:
A)
using namespace llvm;
using namespace clang;
using namespace clangd;
void clangd::foo(StringRef);
This is in some of the older files. (It prevents accidentally defining a
new function instead of one in the header file, for what that's worth).
B)
namespace clang {
namespace clangd {
void foo(llvm::StringRef) { ... }
This is fine, but in practice the using directive often gets added over time.
C)
namespace clang {
namespace clangd {
using namespace llvm; // inside the namespace
This was pretty common, but is a bit misleading: name lookup preferrs
clang::clangd::foo > clang::foo > llvm:: foo (no matter where the using
directive is).
llvm-svn: 344850
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Summary:
The bug being fixed: when a posting list doesn't exist in the index, it
was previously just dropped from the query rather than being treated as
empty. Now that we have the FALSE iterator, we can use it instead.
The query tree logic previously had a bunch of special cases to detect whether
subtrees are empty. Now we just naively build the whole tree, and rely
on the query optimizations to drop the trivial parts.
Finally, there was a bug in trigram generation: the empty query would
generate a single trigram "$$$" instead of no trigrams.
This had no effect (there was no posting list, so the other bug
cancelled it out). But we now have to fix this bug too.
Reviewers: ilya-biryukov
Subscribers: ioeric, MaskRay, jkorous, arphaman, kadircet, cfe-commits
Differential Revision: https://reviews.llvm.org/D52796
llvm-svn: 343802
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Summary:
Currently queries like "ab" can match identifiers like a_yellow_bee.
The value of allowing this for exactly one segment but no more seems dubious.
It costs ~3% of overall ram (~9% of posting list ram) and some quality.
Reviewers: ilya-biryukov, ioeric
Subscribers: MaskRay, jkorous, arphaman, kadircet, cfe-commits
Differential Revision: https://reviews.llvm.org/D52885
llvm-svn: 343777
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Summary:
1) Instead of x$$ for a short-query trigram, just use x
2) Make rules more coherent: prefixes of length 1-2, and first char + next head
3) Fix Dex::fuzzyFind to mark results as incomplete, because
short-trigram rules only yield a subset of results.
Reviewers: ioeric
Subscribers: ilya-biryukov, jkorous, mgrang, arphaman, kadircet, cfe-commits
Differential Revision: https://reviews.llvm.org/D52808
llvm-svn: 343775
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Get rid of "../" and "../../".
llvm-svn: 341645
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* Use consistent assertion messages in iterators implementations
* Silence a bunch of clang-tidy warnings: use `emplace_back` instead of
`push_back` where possible, make sure arguments have the same name in
header and implementation file, use for loop over ranges where possible
Reviewed by: ioeric
Differential Revision: https://reviews.llvm.org/D51528
llvm-svn: 341190
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Stop using `$$$` (empty) trigram and generating a posting list with all
items. Since TRUE iterator is already implemented and correctly inserted
when there are no real trigram posting lists, this is a valid
transformation.
Benchmarks show that this simple change allows ~30% speedup on dataset
of real completion queries.
Before
```
-------------------------------------------------------
Benchmark Time CPU Iterations
-------------------------------------------------------
DexAdHocQueries 5640321 ns 5640265 ns 120
DexRealQ 939835603 ns 939830296 ns 1
```
After
```
-------------------------------------------------------
Benchmark Time CPU Iterations
-------------------------------------------------------
DexAdHocQueries 3452014 ns 3451987 ns 203
DexRealQ 667455912 ns 667455750 ns 1
```
Reviewed by: ilya-biryukov
Differential Revision: https://reviews.llvm.org/D51287
llvm-svn: 340729
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llvm-svn: 339557
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This patch handles trigram generation "short" identifiers and queries.
Trigram generator produces incomplete trigrams for short names so that
the same query iterator API can be used to match symbols which don't
have enough symbols to form a trigram and correctly handle queries which
also are not sufficient for generating a full trigram.
Reviewed by: ioeric
Differential revision: https://reviews.llvm.org/D50517
llvm-svn: 339548
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This patch introduces the core building block of the next-generation
Clangd symbol index - Dex. Search tokens are the keys in the inverted
index and represent a characteristic of a specific symbol: examples of
search token types (Token Namespaces) are
* Trigrams - these are essential for unqualified symbol name fuzzy
search * Scopes for filtering the symbols by the namespace * Paths, e.g.
these can be used to uprank symbols defined close to the edited file
This patch outlines the generic for such token namespaces, but only
implements trigram generation.
The intuition behind trigram generation algorithm is that each extracted
trigram is a valid sequence for Fuzzy Matcher jumps, proposed
implementation utilize existing FuzzyMatcher API for segmentation and
trigram extraction.
However, trigrams generation algorithm for the query string is different
from the previous one: it simply yields sequences of 3 consecutive
lowercased valid characters (letters, digits).
Dex RFC in the mailing list:
http://lists.llvm.org/pipermail/clangd-dev/2018-July/000022.html
The trigram generation techniques are described in detail in the
proposal:
https://docs.google.com/document/d/1C-A6PGT6TynyaX4PXyExNMiGmJ2jL1UwV91Kyx11gOI/edit#heading=h.903u1zon9nkj
Reviewers: sammccall, ioeric, ilya-biryukovA
Subscribers: cfe-commits, klimek, mgorny, MaskRay, jkorous, arphaman
Differential Revision: https://reviews.llvm.org/D49591
llvm-svn: 337901
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