contrib/llvm-project/clang/lib/Tooling/Refactoring/ASTSelectionRequirements.cpp

   1 //===--- ASTSelectionRequirements.cpp - Clang refactoring library ---------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "clang/Tooling/Refactoring/RefactoringActionRuleRequirements.h"
  10
  11 using namespace clang;
  12 using namespace tooling;
  13
  14 Expected<SelectedASTNode>
  15 ASTSelectionRequirement::evaluate(RefactoringRuleContext &Context) const {
  16   // FIXME: Memoize so that selection is evaluated only once.
  17   Expected<SourceRange> Range =
  18       SourceRangeSelectionRequirement::evaluate(Context);
  19   if (!Range)
  20     return Range.takeError();
  21
  22   Optional<SelectedASTNode> Selection =
  23       findSelectedASTNodes(Context.getASTContext(), *Range);
  24   if (!Selection)
  25     return Context.createDiagnosticError(
  26         Range->getBegin(), diag::err_refactor_selection_invalid_ast);
  27   return std::move(*Selection);
  28 }
  29
  30 Expected<CodeRangeASTSelection> CodeRangeASTSelectionRequirement::evaluate(
  31     RefactoringRuleContext &Context) const {
  32   // FIXME: Memoize so that selection is evaluated only once.
  33   Expected<SelectedASTNode> ASTSelection =
  34       ASTSelectionRequirement::evaluate(Context);
  35   if (!ASTSelection)
  36     return ASTSelection.takeError();
  37   std::unique_ptr<SelectedASTNode> StoredSelection =
  38       llvm::make_unique<SelectedASTNode>(std::move(*ASTSelection));
  39   Optional<CodeRangeASTSelection> CodeRange = CodeRangeASTSelection::create(
  40       Context.getSelectionRange(), *StoredSelection);
  41   if (!CodeRange)
  42     return Context.createDiagnosticError(
  43         Context.getSelectionRange().getBegin(),
  44         diag::err_refactor_selection_invalid_ast);
  45   Context.setASTSelection(std::move(StoredSelection));
  46   return std::move(*CodeRange);
  47 }