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86d405bcd0
'MacroExpansionDecl' and 'MacroExpansionExpr' have many common methods. Introduce a common base class 'FreestandingMacroExpansion' that holds 'MacroExpansionInfo'. Factor out common expansion logic to 'evaluateFreestandingMacro' function that resembles 'evaluateAttachedMacro'.
41 lines
1.4 KiB
C++
41 lines
1.4 KiB
C++
//===--- MacroDiscriminatorContext.h - Macro Discriminators -----*- 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 - 2020 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_AST_MACRO_DISCRIMINATOR_CONTEXT_H
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#define SWIFT_AST_MACRO_DISCRIMINATOR_CONTEXT_H
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#include "swift/AST/Decl.h"
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#include "swift/AST/Expr.h"
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#include "llvm/ADT/PointerUnion.h"
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namespace swift {
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/// Describes the context of a macro expansion for the purpose of
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/// computing macro expansion discriminators.
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struct MacroDiscriminatorContext
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: public llvm::PointerUnion<DeclContext *, FreestandingMacroExpansion *> {
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using PointerUnion::PointerUnion;
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static MacroDiscriminatorContext getParentOf(FreestandingMacroExpansion *expansion);
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static MacroDiscriminatorContext getParentOf(
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SourceLoc loc, DeclContext *origDC
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);
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/// Return the innermost declaration context that is suitable for
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/// use in identifying a macro.
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static DeclContext *getInnermostMacroContext(DeclContext *dc);
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};
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}
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#endif // SWIFT_AST_MACRO_DISCRIMINATOR_CONTEXT_H
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