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1d961ba22d
Although I don't plan to bring over new assertions wholesale into the current qualification branch, it's entirely possible that various minor changes in main will use the new assertions; having this basic support in the release branch will simplify that. (This is why I'm adding the includes as a separate pass from rewriting the individual assertions)
75 lines
2.9 KiB
C++
75 lines
2.9 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2023 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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#include "ContextFinder.h"
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#include "RefactoringActions.h"
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#include "swift/AST/Stmt.h"
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#include "swift/Basic/Assertions.h"
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using namespace swift::refactoring;
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static CharSourceRange
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findSourceRangeToWrapInCatch(const ResolvedExprStartCursorInfo &CursorInfo,
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SourceFile *TheFile, SourceManager &SM) {
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Expr *E = CursorInfo.getTrailingExpr();
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if (!E)
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return CharSourceRange();
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auto Node = ASTNode(E);
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auto NodeChecker = [](ASTNode N) { return N.isStmt(StmtKind::Brace); };
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ContextFinder Finder(*TheFile, Node, NodeChecker);
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Finder.resolve();
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auto Contexts = Finder.getContexts();
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if (Contexts.empty())
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return CharSourceRange();
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auto TargetNode = Contexts.back();
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BraceStmt *BStmt = dyn_cast<BraceStmt>(TargetNode.dyn_cast<Stmt *>());
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auto ConvertToCharRange = [&SM](SourceRange SR) {
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return Lexer::getCharSourceRangeFromSourceRange(SM, SR);
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};
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assert(BStmt);
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auto ExprRange = ConvertToCharRange(E->getSourceRange());
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// Check elements of the deepest BraceStmt, pick one that covers expression.
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for (auto Elem : BStmt->getElements()) {
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auto ElemRange = ConvertToCharRange(Elem.getSourceRange());
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if (ElemRange.contains(ExprRange))
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TargetNode = Elem;
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}
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return ConvertToCharRange(TargetNode.getSourceRange());
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}
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bool RefactoringActionConvertToDoCatch::isApplicable(ResolvedCursorInfoPtr Tok,
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DiagnosticEngine &Diag) {
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auto ExprStartInfo = dyn_cast<ResolvedExprStartCursorInfo>(Tok);
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if (!ExprStartInfo || !ExprStartInfo->getTrailingExpr())
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return false;
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return isa<ForceTryExpr>(ExprStartInfo->getTrailingExpr());
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}
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bool RefactoringActionConvertToDoCatch::performChange() {
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auto ExprStartInfo = cast<ResolvedExprStartCursorInfo>(CursorInfo);
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auto *TryExpr = dyn_cast<ForceTryExpr>(ExprStartInfo->getTrailingExpr());
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assert(TryExpr);
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auto Range = findSourceRangeToWrapInCatch(*ExprStartInfo, TheFile, SM);
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if (!Range.isValid())
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return true;
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// Wrap given range in do catch block.
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EditConsumer.accept(SM, Range.getStart(), "do {\n");
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EditorConsumerInsertStream OS(EditConsumer, SM, Range.getEnd());
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OS << "\n} catch {\n" << getCodePlaceholder() << "\n}";
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// Delete ! from try! expression
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auto ExclaimLen = getKeywordLen(tok::exclaim_postfix);
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auto ExclaimRange = CharSourceRange(TryExpr->getExclaimLoc(), ExclaimLen);
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EditConsumer.remove(SM, ExclaimRange);
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return false;
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}
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