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79b225ffa8
This commit does a few things: 1. It uses SwitchEnumBuilder so we are not re-inventing any wheels. 2. Instead of hacking around not putting in a destroy for .None on the fail pass, just *do the right thing* and recognize that we have a binary case enum and in such a case, just emit code for the other case rather than use a default case (meaning no cleanup on .none). rdar://31145255
56 lines
1.6 KiB
C++
56 lines
1.6 KiB
C++
//===--- SwitchCaseFullExpr.h -----------------------------------*- 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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#ifndef SWIFT_SILGEN_SWITCHCASEFULLEXPR_H
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#define SWIFT_SILGEN_SWITCHCASEFULLEXPR_H
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#include "Scope.h"
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namespace swift {
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namespace Lowering {
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class SILGenFunction;
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/// A cleanup scope RAII object, like FullExpr, that comes with a JumpDest for a
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/// continuation block. It is intended to be used to handle switch cases.
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///
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/// You *must* call exit() at some point.
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///
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/// This scope is also exposed to the debug info.
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class SwitchCaseFullExpr {
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SILGenFunction &SGF;
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Scope scope;
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CleanupLocation loc;
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NullablePtr<SILBasicBlock> contBlock;
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public:
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SwitchCaseFullExpr(SILGenFunction &SGF, CleanupLocation loc);
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SwitchCaseFullExpr(SILGenFunction &SGF, CleanupLocation loc,
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SILBasicBlock *contBlock);
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~SwitchCaseFullExpr() = default;
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SwitchCaseFullExpr(const SwitchCaseFullExpr &) = delete;
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SwitchCaseFullExpr &operator=(const SwitchCaseFullExpr &) = delete;
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/// Pop the scope and branch to the cont block.
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void exitAndBranch(SILLocation loc, ArrayRef<SILValue> result = {});
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/// Pop the scope and do not branch to the cont block.
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void exit();
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};
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} // namespace Lowering
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} // namespace swift
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#endif
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