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140 lines
4.5 KiB
C++
140 lines
4.5 KiB
C++
//===--- AccessRequests.h - Access{Level,Scope} Requests -----*- 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 - 2017 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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//
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// This file defines access-control requests.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_ACCESS_REQUESTS_H
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#define SWIFT_ACCESS_REQUESTS_H
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#include "swift/AST/AccessScope.h"
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#include "swift/AST/AttrKind.h"
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#include "swift/AST/Evaluator.h"
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#include "swift/AST/SimpleRequest.h"
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#include "swift/Basic/Statistic.h"
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#include "llvm/ADT/Hashing.h"
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namespace swift {
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class AbstractStorageDecl;
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class ExtensionDecl;
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class ValueDecl;
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/// Request the AccessLevel of the given ValueDecl.
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class AccessLevelRequest :
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public SimpleRequest<AccessLevelRequest,
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CacheKind::SeparatelyCached,
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AccessLevel,
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ValueDecl *> {
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public:
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using SimpleRequest::SimpleRequest;
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private:
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friend class SimpleRequest;
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// Evaluation.
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AccessLevel evaluate(Evaluator &evaluator, ValueDecl *decl) const;
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public:
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// Cycle handling
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AccessLevel breakCycle() const { return AccessLevel::Private; }
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void diagnoseCycle(DiagnosticEngine &diags) const;
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void noteCycleStep(DiagnosticEngine &diags) const;
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// Separate caching.
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bool isCached() const { return true; }
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Optional<AccessLevel> getCachedResult() const;
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void cacheResult(AccessLevel value) const;
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};
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/// Request the setter AccessLevel of the given AbstractStorageDecl,
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/// which may be lower than its normal AccessLevel, and determines
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/// the accessibility of mutating accessors.
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class SetterAccessLevelRequest :
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public SimpleRequest<SetterAccessLevelRequest,
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CacheKind::SeparatelyCached,
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AccessLevel,
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AbstractStorageDecl *> {
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public:
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using SimpleRequest::SimpleRequest;
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private:
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friend class SimpleRequest;
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// Evaluation.
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AccessLevel evaluate(Evaluator &evaluator, AbstractStorageDecl *decl) const;
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public:
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// Cycle handling
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AccessLevel breakCycle() const { return AccessLevel::Private; }
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void diagnoseCycle(DiagnosticEngine &diags) const;
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void noteCycleStep(DiagnosticEngine &diags) const;
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// Separate caching.
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bool isCached() const { return true; }
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Optional<AccessLevel> getCachedResult() const;
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void cacheResult(AccessLevel value) const;
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};
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/// Request the Default and Max AccessLevels of the given ExtensionDecl.
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class DefaultAndMaxAccessLevelRequest :
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public SimpleRequest<DefaultAndMaxAccessLevelRequest,
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CacheKind::SeparatelyCached,
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std::pair<AccessLevel, AccessLevel>,
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ExtensionDecl *> {
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public:
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using SimpleRequest::SimpleRequest;
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using DefaultAndMax = std::pair<AccessLevel, AccessLevel>;
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private:
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friend class SimpleRequest;
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// Evaluation.
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DefaultAndMax
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evaluate(Evaluator &evaluator, ExtensionDecl *decl) const;
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public:
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// Cycle handling
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DefaultAndMax
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breakCycle() const { return std::make_pair(AccessLevel::Private,
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AccessLevel::Private); }
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void diagnoseCycle(DiagnosticEngine &diags) const;
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void noteCycleStep(DiagnosticEngine &diags) const;
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// Separate caching.
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bool isCached() const { return true; }
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Optional<DefaultAndMax> getCachedResult() const;
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void cacheResult(DefaultAndMax value) const;
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};
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/// The zone number for access-control requests.
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#define SWIFT_ACCESS_REQUESTS_TYPEID_ZONE 11
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#define SWIFT_TYPEID_ZONE SWIFT_ACCESS_REQUESTS_TYPEID_ZONE
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#define SWIFT_TYPEID_HEADER "swift/AST/AccessTypeIDZone.def"
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#include "swift/Basic/DefineTypeIDZone.h"
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#undef SWIFT_TYPEID_ZONE
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#undef SWIFT_TYPEID_HEADER
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// Set up reporting of evaluated requests.
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#define SWIFT_TYPEID(RequestType) \
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template<> \
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inline void reportEvaluatedRequest(UnifiedStatsReporter &stats, \
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const RequestType &request) { \
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++stats.getFrontendCounters().RequestType; \
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}
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#include "swift/AST/AccessTypeIDZone.def"
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#undef SWIFT_TYPEID
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} // end namespace swift
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#endif // SWIFT_ACCESS_REQUESTS_H
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