forked from OSchip/llvm-project
182 lines
7.9 KiB
C++
182 lines
7.9 KiB
C++
//===-- SourceCodeTests.cpp ------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "Annotations.h"
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#include "SourceCode.h"
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#include "llvm/Support/Error.h"
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#include "llvm/Support/raw_os_ostream.h"
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#include "llvm/Testing/Support/Error.h"
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#include "gmock/gmock.h"
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#include "gtest/gtest.h"
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namespace clang {
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namespace clangd {
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namespace {
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using llvm::Failed;
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using llvm::HasValue;
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MATCHER_P2(Pos, Line, Col, "") {
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return arg.line == Line && arg.character == Col;
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}
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// The = → 🡆 below are ASCII (1 byte), BMP (3 bytes), and astral (4 bytes).
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const char File[] = R"(0:0 = 0
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1:0 → 8
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2:0 🡆 18)";
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/// A helper to make tests easier to read.
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Position position(int line, int character) {
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Position Pos;
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Pos.line = line;
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Pos.character = character;
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return Pos;
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}
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Range range(const std::pair<int, int> p1, const std::pair<int, int> p2) {
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Range range;
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range.start = position(p1.first, p1.second);
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range.end = position(p2.first, p2.second);
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return range;
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}
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TEST(SourceCodeTests, lspLength) {
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EXPECT_EQ(lspLength(""), 0UL);
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EXPECT_EQ(lspLength("ascii"), 5UL);
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// BMP
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EXPECT_EQ(lspLength("↓"), 1UL);
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EXPECT_EQ(lspLength("¥"), 1UL);
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// astral
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EXPECT_EQ(lspLength("😂"), 2UL);
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}
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TEST(SourceCodeTests, PositionToOffset) {
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// line out of bounds
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EXPECT_THAT_EXPECTED(positionToOffset(File, position(-1, 2)), llvm::Failed());
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// first line
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EXPECT_THAT_EXPECTED(positionToOffset(File, position(0, -1)),
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llvm::Failed()); // out of range
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EXPECT_THAT_EXPECTED(positionToOffset(File, position(0, 0)),
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llvm::HasValue(0)); // first character
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EXPECT_THAT_EXPECTED(positionToOffset(File, position(0, 3)),
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llvm::HasValue(3)); // middle character
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EXPECT_THAT_EXPECTED(positionToOffset(File, position(0, 6)),
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llvm::HasValue(6)); // last character
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EXPECT_THAT_EXPECTED(positionToOffset(File, position(0, 7)),
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llvm::HasValue(7)); // the newline itself
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EXPECT_THAT_EXPECTED(positionToOffset(File, position(0, 7), false),
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llvm::HasValue(7));
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EXPECT_THAT_EXPECTED(positionToOffset(File, position(0, 8)),
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llvm::HasValue(7)); // out of range
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EXPECT_THAT_EXPECTED(positionToOffset(File, position(0, 8), false),
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llvm::Failed()); // out of range
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// middle line
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EXPECT_THAT_EXPECTED(positionToOffset(File, position(1, -1)),
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llvm::Failed()); // out of range
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EXPECT_THAT_EXPECTED(positionToOffset(File, position(1, 0)),
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llvm::HasValue(8)); // first character
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EXPECT_THAT_EXPECTED(positionToOffset(File, position(1, 3)),
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llvm::HasValue(11)); // middle character
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EXPECT_THAT_EXPECTED(positionToOffset(File, position(1, 3), false),
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llvm::HasValue(11));
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EXPECT_THAT_EXPECTED(positionToOffset(File, position(1, 6)),
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llvm::HasValue(16)); // last character
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EXPECT_THAT_EXPECTED(positionToOffset(File, position(1, 7)),
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llvm::HasValue(17)); // the newline itself
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EXPECT_THAT_EXPECTED(positionToOffset(File, position(1, 8)),
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llvm::HasValue(17)); // out of range
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EXPECT_THAT_EXPECTED(positionToOffset(File, position(1, 8), false),
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llvm::Failed()); // out of range
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// last line
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EXPECT_THAT_EXPECTED(positionToOffset(File, position(2, -1)),
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llvm::Failed()); // out of range
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EXPECT_THAT_EXPECTED(positionToOffset(File, position(2, 0)),
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llvm::HasValue(18)); // first character
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EXPECT_THAT_EXPECTED(positionToOffset(File, position(2, 3)),
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llvm::HasValue(21)); // middle character
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EXPECT_THAT_EXPECTED(positionToOffset(File, position(2, 5), false),
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llvm::Failed()); // middle of surrogate pair
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EXPECT_THAT_EXPECTED(positionToOffset(File, position(2, 5)),
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llvm::HasValue(26)); // middle of surrogate pair
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EXPECT_THAT_EXPECTED(positionToOffset(File, position(2, 6), false),
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llvm::HasValue(26)); // end of surrogate pair
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EXPECT_THAT_EXPECTED(positionToOffset(File, position(2, 8)),
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llvm::HasValue(28)); // last character
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EXPECT_THAT_EXPECTED(positionToOffset(File, position(2, 9)),
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llvm::HasValue(29)); // EOF
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EXPECT_THAT_EXPECTED(positionToOffset(File, position(2, 10), false),
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llvm::Failed()); // out of range
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// line out of bounds
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EXPECT_THAT_EXPECTED(positionToOffset(File, position(3, 0)), llvm::Failed());
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EXPECT_THAT_EXPECTED(positionToOffset(File, position(3, 1)), llvm::Failed());
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}
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TEST(SourceCodeTests, OffsetToPosition) {
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EXPECT_THAT(offsetToPosition(File, 0), Pos(0, 0)) << "start of file";
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EXPECT_THAT(offsetToPosition(File, 3), Pos(0, 3)) << "in first line";
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EXPECT_THAT(offsetToPosition(File, 6), Pos(0, 6)) << "end of first line";
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EXPECT_THAT(offsetToPosition(File, 7), Pos(0, 7)) << "first newline";
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EXPECT_THAT(offsetToPosition(File, 8), Pos(1, 0)) << "start of second line";
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EXPECT_THAT(offsetToPosition(File, 12), Pos(1, 4)) << "before BMP char";
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EXPECT_THAT(offsetToPosition(File, 13), Pos(1, 5)) << "in BMP char";
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EXPECT_THAT(offsetToPosition(File, 15), Pos(1, 5)) << "after BMP char";
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EXPECT_THAT(offsetToPosition(File, 16), Pos(1, 6)) << "end of second line";
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EXPECT_THAT(offsetToPosition(File, 17), Pos(1, 7)) << "second newline";
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EXPECT_THAT(offsetToPosition(File, 18), Pos(2, 0)) << "start of last line";
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EXPECT_THAT(offsetToPosition(File, 21), Pos(2, 3)) << "in last line";
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EXPECT_THAT(offsetToPosition(File, 22), Pos(2, 4)) << "before astral char";
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EXPECT_THAT(offsetToPosition(File, 24), Pos(2, 6)) << "in astral char";
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EXPECT_THAT(offsetToPosition(File, 26), Pos(2, 6)) << "after astral char";
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EXPECT_THAT(offsetToPosition(File, 28), Pos(2, 8)) << "end of last line";
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EXPECT_THAT(offsetToPosition(File, 29), Pos(2, 9)) << "EOF";
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EXPECT_THAT(offsetToPosition(File, 30), Pos(2, 9)) << "out of bounds";
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}
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TEST(SourceCodeTests, IsRangeConsecutive) {
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EXPECT_TRUE(isRangeConsecutive(range({2, 2}, {2, 3}), range({2, 3}, {2, 4})));
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EXPECT_FALSE(
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isRangeConsecutive(range({0, 2}, {0, 3}), range({2, 3}, {2, 4})));
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EXPECT_FALSE(
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isRangeConsecutive(range({2, 2}, {2, 3}), range({2, 4}, {2, 5})));
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}
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TEST(SourceCodeTests, SourceLocationInMainFile) {
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Annotations Source(R"cpp(
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^in^t ^foo
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^bar
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^baz ^() {} {} {} {} { }^
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)cpp");
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SourceManagerForFile Owner("foo.cpp", Source.code());
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SourceManager &SM = Owner.get();
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SourceLocation StartOfFile = SM.getLocForStartOfFile(SM.getMainFileID());
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EXPECT_THAT_EXPECTED(sourceLocationInMainFile(SM, position(0, 0)),
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HasValue(StartOfFile));
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// End of file.
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EXPECT_THAT_EXPECTED(
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sourceLocationInMainFile(SM, position(4, 0)),
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HasValue(StartOfFile.getLocWithOffset(Source.code().size())));
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// Column number is too large.
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EXPECT_THAT_EXPECTED(sourceLocationInMainFile(SM, position(0, 1)), Failed());
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EXPECT_THAT_EXPECTED(sourceLocationInMainFile(SM, position(0, 100)),
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Failed());
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EXPECT_THAT_EXPECTED(sourceLocationInMainFile(SM, position(4, 1)), Failed());
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// Line number is too large.
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EXPECT_THAT_EXPECTED(sourceLocationInMainFile(SM, position(5, 0)), Failed());
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// Check all positions mentioned in the test return valid results.
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for (auto P : Source.points()) {
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size_t Offset = llvm::cantFail(positionToOffset(Source.code(), P));
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EXPECT_THAT_EXPECTED(sourceLocationInMainFile(SM, P),
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HasValue(StartOfFile.getLocWithOffset(Offset)));
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}
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}
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} // namespace
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} // namespace clangd
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} // namespace clang
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