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84 lines
2.8 KiB
C++
84 lines
2.8 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 "AsyncRefactoring.h"
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using namespace swift;
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using namespace swift::refactoring::asyncrefactorings;
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void ReferenceCollector::collect(ASTNode Target, BraceStmt *Scope,
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SourceFile &SF,
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llvm::DenseSet<const Decl *> &Decls) {
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ReferenceCollector Collector(Target, &SF.getASTContext().SourceMgr, Decls);
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if (Scope)
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Collector.walk(Scope);
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else
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Collector.walk(SF);
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}
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bool ReferenceCollector::walkToDeclPre(Decl *D, CharSourceRange Range) {
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// Bit of a hack, include all contexts so they're never renamed (seems worse
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// to rename a class/function than it does a variable). Again, an
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// over-approximation, but hopefully doesn't come up too often.
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if (isa<DeclContext>(D) && !D->isImplicit()) {
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ReferencedDecls.insert(D);
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}
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if (AfterTarget && !D->isImplicit()) {
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DeclaredDecls.insert(D);
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} else if (D == Target.dyn_cast<Decl *>()) {
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AfterTarget = true;
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}
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return shouldWalkInto(D->getSourceRange());
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}
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bool ReferenceCollector::walkToExprPre(Expr *E) {
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if (AfterTarget && !E->isImplicit()) {
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if (auto *DRE = dyn_cast<DeclRefExpr>(E)) {
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if (auto *D = DRE->getDecl()) {
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// Only care about references that aren't declared, as seen decls will
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// be renamed (if necessary) during the refactoring.
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if (!D->isImplicit() && !DeclaredDecls.count(D)) {
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ReferencedDecls.insert(D);
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// Also add the async alternative of a function to prevent
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// collisions if a call is replaced with the alternative.
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if (auto *AFD = dyn_cast<AbstractFunctionDecl>(D)) {
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if (auto *Alternative = AFD->getAsyncAlternative())
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ReferencedDecls.insert(Alternative);
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}
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}
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}
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}
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} else if (E == Target.dyn_cast<Expr *>()) {
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AfterTarget = true;
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}
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return shouldWalkInto(E->getSourceRange());
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}
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bool ReferenceCollector::walkToStmtPre(Stmt *S) {
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if (S == Target.dyn_cast<Stmt *>())
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AfterTarget = true;
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return shouldWalkInto(S->getSourceRange());
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}
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bool ReferenceCollector::walkToPatternPre(Pattern *P) {
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if (P == Target.dyn_cast<Pattern *>())
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AfterTarget = true;
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return shouldWalkInto(P->getSourceRange());
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}
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bool ReferenceCollector::shouldWalkInto(SourceRange Range) {
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return AfterTarget ||
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(SM && SM->rangeContainsTokenLoc(Range, Target.getStartLoc()));
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}
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