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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'.
57 lines
2.0 KiB
C++
57 lines
2.0 KiB
C++
//===--- FreestandingMacroExpansion.cpp -----------------------------------===//
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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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#include "swift/AST/FreestandingMacroExpansion.h"
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#include "swift/AST/Decl.h"
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#include "swift/AST/Expr.h"
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using namespace swift;
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SourceRange MacroExpansionInfo::getSourceRange() const {
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SourceLoc endLoc;
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if (ArgList && !ArgList->isImplicit())
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endLoc = ArgList->getEndLoc();
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else if (RightAngleLoc.isValid())
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endLoc = RightAngleLoc;
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else
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endLoc = MacroNameLoc.getEndLoc();
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return SourceRange(SigilLoc, endLoc);
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}
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#define FORWARD_VARIANT(NAME) \
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switch (getFreestandingMacroKind()) { \
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case FreestandingMacroKind::Expr: \
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return cast<MacroExpansionExpr>(this)->NAME(); \
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case FreestandingMacroKind::Decl: \
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return cast<MacroExpansionDecl>(this)->NAME(); \
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}
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DeclContext *FreestandingMacroExpansion::getDeclContext() const {
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FORWARD_VARIANT(getDeclContext);
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}
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SourceRange FreestandingMacroExpansion::getSourceRange() const {
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FORWARD_VARIANT(getSourceRange);
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}
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unsigned FreestandingMacroExpansion::getDiscriminator() const {
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FORWARD_VARIANT(getDiscriminator);
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}
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ASTNode FreestandingMacroExpansion::getASTNode() {
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switch (getFreestandingMacroKind()) {
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case FreestandingMacroKind::Expr:
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return cast<MacroExpansionExpr>(this);
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case FreestandingMacroKind::Decl:
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return cast<MacroExpansionDecl>(this);
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}
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}
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