104 lines
4.0 KiB
C++
104 lines
4.0 KiB
C++
//===--- TestSupport.h - Clang-based refactoring tool -----------*- 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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///
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/// \file
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/// Declares datatypes and routines that are used by test-specific code
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/// in clang-refactor.
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_TOOLS_CLANG_REFACTOR_TEST_SUPPORT_H
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#define LLVM_CLANG_TOOLS_CLANG_REFACTOR_TEST_SUPPORT_H
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#include "ToolRefactoringResultConsumer.h"
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#include "clang/Basic/LLVM.h"
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#include "clang/Basic/SourceLocation.h"
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#include "llvm/ADT/Optional.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/Support/Error.h"
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#include <map>
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#include <string>
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namespace clang {
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class SourceManager;
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namespace refactor {
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/// A source selection range that's specified in a test file using an inline
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/// command in the comment. These commands can take the following forms:
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///
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/// - /*range=*/ will create an empty selection range in the default group
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/// right after the comment.
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/// - /*range a=*/ will create an empty selection range in the 'a' group right
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/// after the comment.
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/// - /*range = +1*/ will create an empty selection range at a location that's
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/// right after the comment with one offset to the column.
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/// - /*range= -> +2:3*/ will create a selection range that starts at the
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/// location right after the comment, and ends at column 3 of the 2nd line
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/// after the line of the starting location.
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///
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/// Clang-refactor will expected all ranges in one test group to produce
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/// identical results.
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struct TestSelectionRange {
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unsigned Begin, End;
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};
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/// A set of test selection ranges specified in one file.
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struct TestSelectionRangesInFile {
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std::string Filename;
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struct RangeGroup {
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std::string Name;
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SmallVector<TestSelectionRange, 8> Ranges;
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};
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std::vector<RangeGroup> GroupedRanges;
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bool foreachRange(const SourceManager &SM,
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llvm::function_ref<void(SourceRange)> Callback) const;
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std::unique_ptr<ClangRefactorToolConsumerInterface> createConsumer() const;
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void dump(llvm::raw_ostream &OS) const;
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};
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/// Extracts the grouped selection ranges from the file that's specified in
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/// the -selection=test:<filename> option.
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///
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/// The grouped ranges are specified in comments using the following syntax:
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/// "range" [ group-name ] "=" [ "+" starting-column-offset ] [ "->"
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/// "+" ending-line-offset ":"
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/// ending-column-position ]
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///
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/// The selection range is then computed from this command by taking the ending
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/// location of the comment, and adding 'starting-column-offset' to the column
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/// for that location. That location in turns becomes the whole selection range,
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/// unless 'ending-line-offset' and 'ending-column-position' are specified. If
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/// they are specified, then the ending location of the selection range is
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/// the starting location's line + 'ending-line-offset' and the
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/// 'ending-column-position' column.
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///
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/// All selection ranges in one group are expected to produce the same
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/// refactoring result.
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///
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/// When testing, zero is returned from clang-refactor even when a group
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/// produces an initiation error, which is different from normal invocation
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/// that returns a non-zero value. This is done on purpose, to ensure that group
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/// consistency checks can return non-zero, but still print the output of
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/// the group. So even if a test matches the output of group, it will still fail
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/// because clang-refactor should return zero on exit when the group results are
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/// consistent.
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///
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/// \returns None on failure (errors are emitted to stderr), or a set of
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/// grouped source ranges in the given file otherwise.
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Optional<TestSelectionRangesInFile> findTestSelectionRanges(StringRef Filename);
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} // end namespace refactor
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} // end namespace clang
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#endif // LLVM_CLANG_TOOLS_CLANG_REFACTOR_TEST_SUPPORT_H
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