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Michael Gottesman
d2c3dba450
This adds consistency and makes it easier to work in SILGen in the debugger since using SGF or gen is not context dependent. You can just use gen.
77 lines
2.4 KiB
C++
77 lines
2.4 KiB
C++
//===--- Varargs.h - SIL generation for (native) Swift varargs --*- 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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// A storage structure for holding a destructured rvalue with an optional
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// cleanup(s).
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// Ownership of the rvalue can be "forwarded" to disable the associated
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// cleanup(s).
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_LOWERING_VARARGS_H
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#define SWIFT_LOWERING_VARARGS_H
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#include "ManagedValue.h"
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#include "swift/SIL/AbstractionPattern.h"
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namespace swift {
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namespace Lowering {
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class SILGenFunction;
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class TypeLowering;
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/// Information about a varargs emission.
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class VarargsInfo {
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ManagedValue Array;
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CleanupHandle AbortCleanup;
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SILValue BaseAddress;
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AbstractionPattern BasePattern;
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const TypeLowering &BaseTL;
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public:
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VarargsInfo(ManagedValue array, CleanupHandle abortCleanup,
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SILValue baseAddress, const TypeLowering &baseTL,
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AbstractionPattern basePattern)
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: Array(array), AbortCleanup(abortCleanup),
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BaseAddress(baseAddress), BasePattern(basePattern), BaseTL(baseTL) {}
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/// Return the array value. emitEndVarargs() is really the only
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/// function that should be accessing this directly.
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ManagedValue getArray() const {
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return Array;
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}
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CleanupHandle getAbortCleanup() const { return AbortCleanup; }
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/// An address of the lowered type.
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SILValue getBaseAddress() const { return BaseAddress; }
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AbstractionPattern getBaseAbstractionPattern() const {
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return BasePattern;
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}
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const TypeLowering &getBaseTypeLowering() const {
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return BaseTL;
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}
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};
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/// Begin a varargs emission sequence.
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VarargsInfo emitBeginVarargs(SILGenFunction &SGF, SILLocation loc,
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CanType baseTy, CanType arrayTy,
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unsigned numElements);
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/// Successfully end a varargs emission sequence.
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ManagedValue emitEndVarargs(SILGenFunction &SGF, SILLocation loc,
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VarargsInfo &&varargs);
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} // end namespace Lowering
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} // end namespace swift
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#endif
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