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'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'.
114 lines
3.6 KiB
C++
114 lines
3.6 KiB
C++
//===--- FreestandingMacroExpansion.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) 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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#ifndef SWIFT_AST_FREESTANDING_MACRO_EXPANSION_H
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#define SWIFT_AST_FREESTANDING_MACRO_EXPANSION_H
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#include "swift/AST/ASTAllocated.h"
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#include "swift/AST/ASTNode.h"
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#include "swift/AST/ConcreteDeclRef.h"
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#include "swift/AST/DeclNameLoc.h"
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#include "swift/AST/Identifier.h"
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#include "swift/Basic/SourceLoc.h"
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namespace swift {
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class MacroExpansionDecl;
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class MacroExpansionExpr;
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class Expr;
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class Decl;
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class ArgumentList;
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/// Information about a macro expansion that is common between macro
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/// expansion declarations and expressions.
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///
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/// Instances of these types will be shared among paired macro expansion
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/// declaration/expression nodes.
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struct MacroExpansionInfo : ASTAllocated<MacroExpansionInfo> {
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SourceLoc SigilLoc;
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DeclNameRef MacroName;
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DeclNameLoc MacroNameLoc;
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SourceLoc LeftAngleLoc, RightAngleLoc;
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llvm::ArrayRef<TypeRepr *> GenericArgs;
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ArgumentList *ArgList;
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/// The referenced macro.
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ConcreteDeclRef macroRef;
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MacroExpansionInfo(SourceLoc sigilLoc, DeclNameRef macroName,
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DeclNameLoc macroNameLoc, SourceLoc leftAngleLoc,
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SourceLoc rightAngleLoc, ArrayRef<TypeRepr *> genericArgs,
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ArgumentList *argList)
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: SigilLoc(sigilLoc), MacroName(macroName), MacroNameLoc(macroNameLoc),
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LeftAngleLoc(leftAngleLoc), RightAngleLoc(rightAngleLoc),
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GenericArgs(genericArgs), ArgList(argList) {}
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SourceLoc getLoc() const { return SigilLoc; }
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SourceRange getGenericArgsRange() const {
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return {LeftAngleLoc, RightAngleLoc};
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}
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SourceRange getSourceRange() const;
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};
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enum class FreestandingMacroKind {
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Expr, // MacroExpansionExpr.
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Decl, // MacroExpansionDecl.
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};
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/// A base class of either 'MacroExpansionExpr' or 'MacroExpansionDecl'.
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class FreestandingMacroExpansion {
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llvm::PointerIntPair<MacroExpansionInfo *, 1, FreestandingMacroKind>
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infoAndKind;
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protected:
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FreestandingMacroExpansion(FreestandingMacroKind kind,
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MacroExpansionInfo *info)
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: infoAndKind(info, kind) {}
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public:
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MacroExpansionInfo *getExpansionInfo() const {
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return infoAndKind.getPointer();
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}
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FreestandingMacroKind getFreestandingMacroKind() const {
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return infoAndKind.getInt();
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}
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ASTNode getASTNode();
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SourceLoc getPoundLoc() const { return getExpansionInfo()->SigilLoc; }
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DeclNameLoc getMacroNameLoc() const {
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return getExpansionInfo()->MacroNameLoc;
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}
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DeclNameRef getMacroName() const { return getExpansionInfo()->MacroName; }
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ArrayRef<TypeRepr *> getGenericArgs() const {
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return getExpansionInfo()->GenericArgs;
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}
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SourceRange getGenericArgsRange() const {
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return getExpansionInfo()->getGenericArgsRange();
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}
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ArgumentList *getArgs() const { return getExpansionInfo()->ArgList; }
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void setArgs(ArgumentList *args) { getExpansionInfo()->ArgList = args; }
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ConcreteDeclRef getMacroRef() const { return getExpansionInfo()->macroRef; }
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void setMacroRef(ConcreteDeclRef ref) { getExpansionInfo()->macroRef = ref; }
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DeclContext *getDeclContext() const;
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SourceRange getSourceRange() const;
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unsigned getDiscriminator() const;
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};
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} // namespace swift
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#endif // SWIFT_AST_FREESTANDING_MACRO_EXPANSION_H
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