6024e5c395
clang 20.0.0 (based on r547379) from build 12806354. Bug: http://b/379133546 Test: N/A Change-Id: I2eb8938af55d809de674be63cb30cf27e801862b Upstream-Commit: ad834e67b1105d15ef907f6255d4c96e8e733f57
134 lines
5.6 KiB
C++
134 lines
5.6 KiB
C++
//===--- 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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class raw_ostream;
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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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/// $(foo)^class Foo{}; // ...or have a payload: "foo"
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/// $definition(foo)^class Foo{}; // ...or both
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/// $fail(runtime)[[assert(false)]] // ranges can have names/payloads too
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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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/// Names consist of only alphanumeric characters or '_'.
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/// Payloads can contain any character expect '(' and ')'.
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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 the point with \p Name and its payload (if any).
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std::pair<size_t, llvm::StringRef>
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pointWithPayload(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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/// Order matches the order within the text.
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std::vector<size_t> points(llvm::StringRef Name = "") const;
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/// Returns the positions and payloads (if any) of all points named \p Name
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std::vector<std::pair<size_t, llvm::StringRef>>
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pointsWithPayload(llvm::StringRef Name = "") const;
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/// Returns the mapping of all names of points marked in the text to their
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/// position. Unnamed points are mapped to the empty string. The positions are
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/// sorted.
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/// FIXME Remove this and expose `All` directly (currently used out-of-tree)
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llvm::StringMap<llvm::SmallVector<size_t, 1>> all_points() 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 and payload of the range marked by [[ ]]
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/// (or $name(payload)[[ ]]). Crashes if there isn't exactly one.
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std::pair<Range, llvm::StringRef>
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rangeWithPayload(llvm::StringRef Name = "") const;
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/// Returns the location of all ranges marked by [[ ]] (or $name[[ ]]).
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/// They are ordered by start position within the text.
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std::vector<Range> ranges(llvm::StringRef Name = "") const;
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/// Returns the location of all ranges marked by [[ ]]
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/// (or $name(payload)[[ ]]).
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/// They are ordered by start position within the text.
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std::vector<std::pair<Range, llvm::StringRef>>
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rangesWithPayload(llvm::StringRef Name = "") const;
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/// Returns the mapping of all names of ranges marked in the text to their
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/// location. Unnamed ranges are mapped to the empty string. The ranges are
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/// sorted by their start position.
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llvm::StringMap<llvm::SmallVector<Range, 1>> all_ranges() const;
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private:
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std::string Code;
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/// Either a Point (Only Start) or a Range (Start and End)
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struct Annotation {
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size_t Begin;
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size_t End = -1;
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bool isPoint() const { return End == size_t(-1); }
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llvm::StringRef Name;
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llvm::StringRef Payload;
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};
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std::vector<Annotation> All;
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// Values are the indices into All
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llvm::StringMap<llvm::SmallVector<size_t, 1>> Points;
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llvm::StringMap<llvm::SmallVector<size_t, 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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