[Testing] Move clangd::Annotations to llvm testing support
Summary: Annotations allow writing nice-looking unit test code when one needs access to locations from the source code, e.g. running code completion at particular offsets in a file. See comments in Annotations.cpp for more details on the API. Also got rid of a duplicate annotations parsing code in clang's code complete tests. Reviewers: gribozavr, sammccall Reviewed By: gribozavr Subscribers: mgorny, hiraditya, ioeric, MaskRay, jkorous, arphaman, kadircet, jdoerfert, cfe-commits, llvm-commits Tags: #clang, #llvm Differential Revision: https://reviews.llvm.org/D59814 llvm-svn: 359179
This commit is contained in:
Ilya Biryukov
parent
45d042ed96
commit
6fae38ec91
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@ -12,74 +12,41 @@
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namespace clang {
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namespace clangd {
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// Crash if the assertion fails, printing the message and testcase.
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// More elegant error handling isn't needed for unit tests.
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static void require(bool Assertion, const char *Msg, llvm::StringRef Code) {
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if (!Assertion) {
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llvm::errs() << "Annotated testcase: " << Msg << "\n" << Code << "\n";
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llvm_unreachable("Annotated testcase assertion failed!");
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}
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}
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Annotations::Annotations(llvm::StringRef Text) {
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auto Here = [this] { return offsetToPosition(Code, Code.size()); };
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auto Require = [Text](bool Assertion, const char *Msg) {
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require(Assertion, Msg, Text);
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};
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llvm::Optional<llvm::StringRef> Name;
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llvm::SmallVector<std::pair<llvm::StringRef, Position>, 8> OpenRanges;
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Code.reserve(Text.size());
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while (!Text.empty()) {
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if (Text.consume_front("^")) {
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Points[Name.getValueOr("")].push_back(Here());
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Name = None;
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continue;
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}
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if (Text.consume_front("[[")) {
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OpenRanges.emplace_back(Name.getValueOr(""), Here());
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Name = None;
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continue;
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}
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Require(!Name, "$name should be followed by ^ or [[");
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if (Text.consume_front("]]")) {
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Require(!OpenRanges.empty(), "unmatched ]]");
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Ranges[OpenRanges.back().first].push_back(
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{OpenRanges.back().second, Here()});
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OpenRanges.pop_back();
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continue;
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}
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if (Text.consume_front("$")) {
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Name = Text.take_while(llvm::isAlnum);
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Text = Text.drop_front(Name->size());
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continue;
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}
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Code.push_back(Text.front());
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Text = Text.drop_front();
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}
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Require(!Name, "unterminated $name");
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Require(OpenRanges.empty(), "unmatched [[");
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}
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Position Annotations::point(llvm::StringRef Name) const {
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auto I = Points.find(Name);
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require(I != Points.end() && I->getValue().size() == 1,
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"expected exactly one point", Code);
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return I->getValue()[0];
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return offsetToPosition(code(), Base::point(Name));
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}
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std::vector<Position> Annotations::points(llvm::StringRef Name) const {
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auto P = Points.lookup(Name);
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return {P.begin(), P.end()};
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auto Offsets = Base::points(Name);
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std::vector<Position> Ps;
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Ps.reserve(Offsets.size());
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for (size_t O : Offsets)
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Ps.push_back(offsetToPosition(code(), O));
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return Ps;
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}
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Range Annotations::range(llvm::StringRef Name) const {
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auto I = Ranges.find(Name);
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require(I != Ranges.end() && I->getValue().size() == 1,
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"expected exactly one range", Code);
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return I->getValue()[0];
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static clangd::Range toLSPRange(llvm::StringRef Code, Annotations::Range R) {
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clangd::Range LSPRange;
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LSPRange.start = offsetToPosition(Code, R.Begin);
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LSPRange.end = offsetToPosition(Code, R.End);
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return LSPRange;
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}
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std::vector<Range> Annotations::ranges(llvm::StringRef Name) const {
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auto R = Ranges.lookup(Name);
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return {R.begin(), R.end()};
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clangd::Range Annotations::range(llvm::StringRef Name) const {
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return toLSPRange(code(), Base::range(Name));
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}
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std::vector<clangd::Range> Annotations::ranges(llvm::StringRef Name) const {
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auto OffsetRanges = Base::ranges(Name);
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std::vector<clangd::Range> Rs;
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Rs.reserve(OffsetRanges.size());
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for (Annotations::Range R : OffsetRanges)
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Rs.push_back(toLSPRange(code(), R));
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return Rs;
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}
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} // namespace clangd
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@ -5,64 +5,32 @@
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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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//
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// Annotations lets you mark points and ranges inside source code, for tests:
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//
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// Annotations Example(R"cpp(
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// int complete() { x.pri^ } // ^ indicates a point
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// void err() { [["hello" == 42]]; } // [[this is a range]]
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// $definition^class Foo{}; // points can be named: "definition"
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// $fail[[static_assert(false, "")]] // ranges can be named too: "fail"
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// )cpp");
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//
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// StringRef Code = Example.code(); // annotations stripped.
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// std::vector<Position> PP = Example.points(); // all unnamed points
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// Position P = Example.point(); // there must be exactly one
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// Range R = Example.range("fail"); // find named ranges
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//
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// Points/ranges are coordinates into `code()` which is stripped of annotations.
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//
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// Ranges may be nested (and points can be inside ranges), but there's no way
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// to define general overlapping ranges.
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//
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// A clangd-specific version of llvm/Testing/Support/Annotations.h, replaces
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// offsets and offset-based ranges with types from the LSP protocol.
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//===---------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_TOOLS_EXTRA_UNITTESTS_CLANGD_ANNOTATIONS_H
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#define LLVM_CLANG_TOOLS_EXTRA_UNITTESTS_CLANGD_ANNOTATIONS_H
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#include "Protocol.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/StringMap.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Testing/Support/Annotations.h"
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namespace clang {
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namespace clangd {
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class Annotations {
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/// Same as llvm::Annotations, but adjusts functions to LSP-specific types for
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/// positions and ranges.
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class Annotations : public llvm::Annotations {
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using Base = llvm::Annotations;
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public:
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// Parses the annotations from Text. Crashes if it's malformed.
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Annotations(llvm::StringRef Text);
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using llvm::Annotations::Annotations;
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// The input text with all annotations stripped.
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// All points and ranges are relative to this stripped text.
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llvm::StringRef code() const { return Code; }
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// Returns the position of the point marked by ^ (or $name^) in the text.
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// Crashes if there isn't exactly one.
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Position point(llvm::StringRef Name = "") const;
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// Returns the position of all points marked by ^ (or $name^) in the text.
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std::vector<Position> points(llvm::StringRef Name = "") const;
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// Returns the location of the range marked by [[ ]] (or $name[[ ]]).
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// Crashes if there isn't exactly one.
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Range range(llvm::StringRef Name = "") const;
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// Returns the location of all ranges marked by [[ ]] (or $name[[ ]]).
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std::vector<Range> ranges(llvm::StringRef Name = "") const;
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private:
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std::string Code;
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llvm::StringMap<llvm::SmallVector<Position, 1>> Points;
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llvm::StringMap<llvm::SmallVector<Range, 1>> Ranges;
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clangd::Range range(llvm::StringRef Name = "") const;
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std::vector<clangd::Range> ranges(llvm::StringRef Name = "") const;
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};
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} // namespace clangd
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@ -16,4 +16,5 @@ target_link_libraries(SemaTests
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clangSema
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clangSerialization
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clangTooling
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LLVMTestingSupport
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)
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@ -13,6 +13,7 @@
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#include "clang/Sema/Sema.h"
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#include "clang/Sema/SemaDiagnostic.h"
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#include "clang/Tooling/Tooling.h"
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#include "llvm/Testing/Support/Annotations.h"
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#include "gmock/gmock.h"
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#include "gtest/gtest.h"
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#include <cstddef>
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@ -107,41 +108,18 @@ CompletionContext runCompletion(StringRef Code, size_t Offset) {
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return ResultCtx;
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}
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struct ParsedAnnotations {
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std::vector<size_t> Points;
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std::string Code;
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};
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ParsedAnnotations parseAnnotations(StringRef AnnotatedCode) {
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ParsedAnnotations R;
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while (!AnnotatedCode.empty()) {
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size_t NextPoint = AnnotatedCode.find('^');
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if (NextPoint == StringRef::npos) {
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R.Code += AnnotatedCode;
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AnnotatedCode = "";
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break;
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}
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R.Code += AnnotatedCode.substr(0, NextPoint);
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R.Points.push_back(R.Code.size());
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AnnotatedCode = AnnotatedCode.substr(NextPoint + 1);
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}
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return R;
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}
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CompletionContext runCodeCompleteOnCode(StringRef AnnotatedCode) {
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ParsedAnnotations P = parseAnnotations(AnnotatedCode);
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assert(P.Points.size() == 1 && "expected exactly one annotation point");
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return runCompletion(P.Code, P.Points.front());
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llvm::Annotations A(AnnotatedCode);
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return runCompletion(A.code(), A.point());
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}
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std::vector<std::string>
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collectPreferredTypes(StringRef AnnotatedCode,
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std::string *PtrDiffType = nullptr) {
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ParsedAnnotations P = parseAnnotations(AnnotatedCode);
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llvm::Annotations A(AnnotatedCode);
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std::vector<std::string> Types;
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for (size_t Point : P.Points) {
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auto Results = runCompletion(P.Code, Point);
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for (size_t Point : A.points()) {
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auto Results = runCompletion(A.code(), Point);
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if (PtrDiffType) {
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assert(PtrDiffType->empty() || *PtrDiffType == Results.PtrDiffType);
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*PtrDiffType = Results.PtrDiffType;
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@ -0,0 +1,90 @@
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//===--- Annotations.h - Annotated source code for tests ---------*- 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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#ifndef LLVM_TESTING_SUPPORT_ANNOTATIONS_H
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#define LLVM_TESTING_SUPPORT_ANNOTATIONS_H
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/StringMap.h"
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#include "llvm/ADT/StringRef.h"
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#include <tuple>
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#include <vector>
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namespace llvm {
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/// Annotations lets you mark points and ranges inside source code, for tests:
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///
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/// Annotations Example(R"cpp(
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/// int complete() { x.pri^ } // ^ indicates a point
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/// void err() { [["hello" == 42]]; } // [[this is a range]]
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/// $definition^class Foo{}; // points can be named: "definition"
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/// $fail[[static_assert(false, "")]] // ranges can be named too: "fail"
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/// )cpp");
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///
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/// StringRef Code = Example.code(); // annotations stripped.
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/// std::vector<size_t> PP = Example.points(); // all unnamed points
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/// size_t P = Example.point(); // there must be exactly one
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/// llvm::Range R = Example.range("fail"); // find named ranges
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///
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/// Points/ranges are coordinated into `code()` which is stripped of
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/// annotations.
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///
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/// Ranges may be nested (and points can be inside ranges), but there's no way
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/// to define general overlapping ranges.
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///
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/// FIXME: the choice of the marking syntax makes it impossible to represent
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/// some of the C++ and Objective C constructs (including common ones
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/// like C++ attributes). We can fix this by:
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/// 1. introducing an escaping mechanism for the special characters,
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/// 2. making characters for marking points and ranges configurable,
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/// 3. changing the syntax to something less commonly used,
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/// 4. ...
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class Annotations {
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public:
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/// Two offsets pointing to a continuous substring. End is not included, i.e.
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/// represents a half-open range.
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struct Range {
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size_t Begin = 0;
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size_t End = 0;
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friend bool operator==(const Range &L, const Range &R) {
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return std::tie(L.Begin, L.End) == std::tie(R.Begin, R.End);
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}
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friend bool operator!=(const Range &L, const Range &R) { return !(L == R); }
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};
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/// Parses the annotations from Text. Crashes if it's malformed.
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Annotations(llvm::StringRef Text);
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/// The input text with all annotations stripped.
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/// All points and ranges are relative to this stripped text.
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llvm::StringRef code() const { return Code; }
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/// Returns the position of the point marked by ^ (or $name^) in the text.
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/// Crashes if there isn't exactly one.
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size_t point(llvm::StringRef Name = "") const;
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/// Returns the position of all points marked by ^ (or $name^) in the text.
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std::vector<size_t> points(llvm::StringRef Name = "") const;
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/// Returns the location of the range marked by [[ ]] (or $name[[ ]]).
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/// Crashes if there isn't exactly one.
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Range range(llvm::StringRef Name = "") const;
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/// Returns the location of all ranges marked by [[ ]] (or $name[[ ]]).
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std::vector<Range> ranges(llvm::StringRef Name = "") const;
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private:
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std::string Code;
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llvm::StringMap<llvm::SmallVector<size_t, 1>> Points;
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llvm::StringMap<llvm::SmallVector<Range, 1>> Ranges;
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};
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llvm::raw_ostream &operator<<(llvm::raw_ostream &O,
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const llvm::Annotations::Range &R);
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} // namespace llvm
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#endif
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@ -0,0 +1,95 @@
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//===--- Annotations.cpp - Annotated source code for unit tests --*- 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 "llvm/Testing/Support/Annotations.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/Support/FormatVariadic.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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// Crash if the assertion fails, printing the message and testcase.
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// More elegant error handling isn't needed for unit tests.
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static void require(bool Assertion, const char *Msg, llvm::StringRef Code) {
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if (!Assertion) {
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llvm::errs() << "Annotated testcase: " << Msg << "\n" << Code << "\n";
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llvm_unreachable("Annotated testcase assertion failed!");
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}
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}
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Annotations::Annotations(llvm::StringRef Text) {
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auto Require = [Text](bool Assertion, const char *Msg) {
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require(Assertion, Msg, Text);
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};
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llvm::Optional<llvm::StringRef> Name;
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llvm::SmallVector<std::pair<llvm::StringRef, size_t>, 8> OpenRanges;
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Code.reserve(Text.size());
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while (!Text.empty()) {
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if (Text.consume_front("^")) {
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Points[Name.getValueOr("")].push_back(Code.size());
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Name = llvm::None;
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continue;
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}
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if (Text.consume_front("[[")) {
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OpenRanges.emplace_back(Name.getValueOr(""), Code.size());
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Name = llvm::None;
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continue;
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}
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Require(!Name, "$name should be followed by ^ or [[");
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if (Text.consume_front("]]")) {
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Require(!OpenRanges.empty(), "unmatched ]]");
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Range R;
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R.Begin = OpenRanges.back().second;
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R.End = Code.size();
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Ranges[OpenRanges.back().first].push_back(R);
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OpenRanges.pop_back();
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continue;
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}
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if (Text.consume_front("$")) {
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Name = Text.take_while(llvm::isAlnum);
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Text = Text.drop_front(Name->size());
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continue;
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}
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Code.push_back(Text.front());
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Text = Text.drop_front();
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}
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Require(!Name, "unterminated $name");
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Require(OpenRanges.empty(), "unmatched [[");
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}
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size_t Annotations::point(llvm::StringRef Name) const {
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auto I = Points.find(Name);
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require(I != Points.end() && I->getValue().size() == 1,
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"expected exactly one point", Code);
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return I->getValue()[0];
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}
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std::vector<size_t> Annotations::points(llvm::StringRef Name) const {
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auto P = Points.lookup(Name);
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return {P.begin(), P.end()};
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}
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Annotations::Range Annotations::range(llvm::StringRef Name) const {
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auto I = Ranges.find(Name);
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require(I != Ranges.end() && I->getValue().size() == 1,
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"expected exactly one range", Code);
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return I->getValue()[0];
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}
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std::vector<Annotations::Range>
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Annotations::ranges(llvm::StringRef Name) const {
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auto R = Ranges.lookup(Name);
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return {R.begin(), R.end()};
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}
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llvm::raw_ostream &llvm::operator<<(llvm::raw_ostream &O,
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const llvm::Annotations::Range &R) {
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return O << llvm::formatv("[{0}, {1})", R.Begin, R.End);
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}
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@ -2,6 +2,7 @@ add_definitions(-DGTEST_LANG_CXX11=1)
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add_definitions(-DGTEST_HAS_TR1_TUPLE=0)
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add_llvm_library(LLVMTestingSupport
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Annotations.cpp
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||||
Error.cpp
|
||||
SupportHelpers.cpp
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,112 @@
|
|||
//===----- unittests/AnnotationsTest.cpp ----------------------------------===//
|
||||
//
|
||||
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
||||
// See https://llvm.org/LICENSE.txt for license information.
|
||||
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
||||
//
|
||||
//===----------------------------------------------------------------------===//
|
||||
#include "llvm/Testing/Support/Annotations.h"
|
||||
#include "gmock/gmock.h"
|
||||
#include "gtest/gtest.h"
|
||||
|
||||
using ::testing::ElementsAre;
|
||||
using ::testing::IsEmpty;
|
||||
|
||||
namespace {
|
||||
llvm::Annotations::Range range(size_t Begin, size_t End) {
|
||||
llvm::Annotations::Range R;
|
||||
R.Begin = Begin;
|
||||
R.End = End;
|
||||
return R;
|
||||
}
|
||||
|
||||
TEST(AnnotationsTest, CleanedCode) {
|
||||
EXPECT_EQ(llvm::Annotations("foo^bar$nnn[[baz$^[[qux]]]]").code(),
|
||||
"foobarbazqux");
|
||||
}
|
||||
|
||||
TEST(AnnotationsTest, Points) {
|
||||
// A single point.
|
||||
EXPECT_EQ(llvm::Annotations("^ab").point(), 0u);
|
||||
EXPECT_EQ(llvm::Annotations("a^b").point(), 1u);
|
||||
EXPECT_EQ(llvm::Annotations("ab^").point(), 2u);
|
||||
|
||||
// Multiple points.
|
||||
EXPECT_THAT(llvm::Annotations("^a^bc^d^").points(),
|
||||
ElementsAre(0u, 1u, 3u, 4u));
|
||||
|
||||
// No points.
|
||||
EXPECT_THAT(llvm::Annotations("ab[[cd]]").points(), IsEmpty());
|
||||
|
||||
// Consecutive points.
|
||||
EXPECT_THAT(llvm::Annotations("ab^^^cd").points(), ElementsAre(2u, 2u, 2u));
|
||||
}
|
||||
|
||||
TEST(AnnotationsTest, Ranges) {
|
||||
// A single range.
|
||||
EXPECT_EQ(llvm::Annotations("[[a]]bc").range(), range(0, 1));
|
||||
EXPECT_EQ(llvm::Annotations("a[[bc]]d").range(), range(1, 3));
|
||||
EXPECT_EQ(llvm::Annotations("ab[[cd]]").range(), range(2, 4));
|
||||
|
||||
// Empty range.
|
||||
EXPECT_EQ(llvm::Annotations("[[]]ab").range(), range(0, 0));
|
||||
EXPECT_EQ(llvm::Annotations("a[[]]b").range(), range(1, 1));
|
||||
EXPECT_EQ(llvm::Annotations("ab[[]]").range(), range(2, 2));
|
||||
|
||||
// Multiple ranges.
|
||||
EXPECT_THAT(llvm::Annotations("[[a]][[b]]cd[[ef]]ef").ranges(),
|
||||
ElementsAre(range(0, 1), range(1, 2), range(4, 6)));
|
||||
|
||||
// No ranges.
|
||||
EXPECT_THAT(llvm::Annotations("ab^c^defef").ranges(), IsEmpty());
|
||||
}
|
||||
|
||||
TEST(AnnotationsTest, Nested) {
|
||||
llvm::Annotations Annotated("a[[f^oo^bar[[b[[a]]z]]]]bcdef");
|
||||
EXPECT_THAT(Annotated.points(), ElementsAre(2u, 4u));
|
||||
EXPECT_THAT(Annotated.ranges(),
|
||||
ElementsAre(range(8, 9), range(7, 10), range(1, 10)));
|
||||
}
|
||||
|
||||
TEST(AnnotationsTest, Named) {
|
||||
// A single named point or range.
|
||||
EXPECT_EQ(llvm::Annotations("a$foo^b").point("foo"), 1u);
|
||||
EXPECT_EQ(llvm::Annotations("a$foo[[b]]cdef").range("foo"), range(1, 2));
|
||||
|
||||
// Empty names should also work.
|
||||
EXPECT_EQ(llvm::Annotations("a$^b").point(""), 1u);
|
||||
EXPECT_EQ(llvm::Annotations("a$[[b]]cdef").range(""), range(1, 2));
|
||||
|
||||
// Multiple named points.
|
||||
llvm::Annotations Annotated("a$p1^bcd$p2^123$p1^345");
|
||||
EXPECT_THAT(Annotated.points(), IsEmpty());
|
||||
EXPECT_THAT(Annotated.points("p1"), ElementsAre(1u, 7u));
|
||||
EXPECT_EQ(Annotated.point("p2"), 4u);
|
||||
}
|
||||
|
||||
TEST(AnnotationsTest, Errors) {
|
||||
// Annotations use llvm_unreachable, it will only crash in debug mode.
|
||||
#ifndef NDEBUG
|
||||
// point() and range() crash on zero or multiple ranges.
|
||||
EXPECT_DEATH(llvm::Annotations("ab[[c]]def").point(),
|
||||
"expected exactly one point");
|
||||
EXPECT_DEATH(llvm::Annotations("a^b^cdef").point(),
|
||||
"expected exactly one point");
|
||||
|
||||
EXPECT_DEATH(llvm::Annotations("a^bcdef").range(),
|
||||
"expected exactly one range");
|
||||
EXPECT_DEATH(llvm::Annotations("a[[b]]c[[d]]ef").range(),
|
||||
"expected exactly one range");
|
||||
|
||||
EXPECT_DEATH(llvm::Annotations("$foo^a$foo^a").point("foo"),
|
||||
"expected exactly one point");
|
||||
EXPECT_DEATH(llvm::Annotations("$foo[[a]]bc$foo[[a]]").range("foo"),
|
||||
"expected exactly one range");
|
||||
|
||||
// Parsing failures.
|
||||
EXPECT_DEATH(llvm::Annotations("ff[[fdfd"), "unmatched \\[\\[");
|
||||
EXPECT_DEATH(llvm::Annotations("ff[[fdjsfjd]]xxx]]"), "unmatched ]]");
|
||||
EXPECT_DEATH(llvm::Annotations("ff$fdsfd"), "unterminated \\$name");
|
||||
#endif
|
||||
}
|
||||
} // namespace
|
||||
|
|
@ -5,6 +5,7 @@ set(LLVM_LINK_COMPONENTS
|
|||
add_llvm_unittest(SupportTests
|
||||
AlignOfTest.cpp
|
||||
AllocatorTest.cpp
|
||||
AnnotationsTest.cpp
|
||||
ARMAttributeParser.cpp
|
||||
ArrayRecyclerTest.cpp
|
||||
BinaryStreamTest.cpp
|
||||
|
|
|
|||
Loading…
Reference in New Issue