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4796ea458a
Bridge DeclBaseName, DeclNameRef, and DeclNameLoc. Implement UnresolvedMemberExpr generation.
133 lines
4.0 KiB
C++
133 lines
4.0 KiB
C++
//===--- DeclNameLoc.h - Declaration Name Location Info ---------*- 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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// This file defines the DeclNameLoc class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_AST_DECL_NAME_LOC_H
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#define SWIFT_AST_DECL_NAME_LOC_H
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#include "swift/Basic/LLVM.h"
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#include "swift/Basic/SourceLoc.h"
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class BridgedDeclNameLoc;
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namespace swift {
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class ASTContext;
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/// Source location information for a declaration name (\c DeclName)
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/// written in the source.
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class DeclNameLoc {
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friend class ::BridgedDeclNameLoc;
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/// Source location information.
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///
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/// If \c NumArgumentLabels == 0, this is the SourceLoc for the base name.
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/// Otherwise, it points to an array of SourceLocs, which contains:
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/// * The base name location
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/// * The left parentheses location
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/// * The right parentheses location
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/// * The locations of each of the argument labels.
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const void *LocationInfo;
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/// The number of argument labels stored in the name.
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unsigned NumArgumentLabels;
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enum {
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BaseNameIndex = 0,
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LParenIndex = 1,
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RParenIndex = 2,
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FirstArgumentLabelIndex = 3,
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};
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/// Retrieve a pointer to either the only source location that was
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/// stored or to the array of source locations that was stored.
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SourceLoc const * getSourceLocs() const {
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if (NumArgumentLabels == 0)
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return reinterpret_cast<SourceLoc const *>(&LocationInfo);
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return reinterpret_cast<SourceLoc const *>(LocationInfo);
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}
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DeclNameLoc(const void *LocationInfo, unsigned NumArgumentLabels)
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: LocationInfo(LocationInfo), NumArgumentLabels(NumArgumentLabels) {}
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public:
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/// Create an invalid declaration name location.
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DeclNameLoc() : DeclNameLoc(nullptr, 0) {}
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/// Create declaration name location information for a base name.
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explicit DeclNameLoc(SourceLoc baseNameLoc)
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: DeclNameLoc(baseNameLoc.getOpaquePointerValue(), 0) {}
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/// Create declaration name location information for a compound
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/// name.
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DeclNameLoc(ASTContext &ctx, SourceLoc baseNameLoc,
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SourceLoc lParenLoc,
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ArrayRef<SourceLoc> argumentLabelLocs,
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SourceLoc rParenLoc);
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/// Whether the location information is valid.
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bool isValid() const { return getBaseNameLoc().isValid(); }
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/// Whether the location information is invalid.
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bool isInvalid() const { return getBaseNameLoc().isInvalid(); }
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/// Whether this was written as a compound name.
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bool isCompound() const { return NumArgumentLabels > 0; }
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/// Retrieve the location of the base name.
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SourceLoc getBaseNameLoc() const {
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return getSourceLocs()[BaseNameIndex];
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}
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/// Retrieve the location of the left parentheses.
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SourceLoc getLParenLoc() const {
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if (NumArgumentLabels == 0) return SourceLoc();
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return getSourceLocs()[LParenIndex];
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}
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/// Retrieve the location of the right parentheses.
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SourceLoc getRParenLoc() const {
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if (NumArgumentLabels == 0) return SourceLoc();
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return getSourceLocs()[RParenIndex];
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}
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/// Retrieve the location of an argument label.
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SourceLoc getArgumentLabelLoc(unsigned index) const {
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if (index >= NumArgumentLabels)
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return SourceLoc();
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return getSourceLocs()[FirstArgumentLabelIndex + index];
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}
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SourceLoc getStartLoc() const {
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return getBaseNameLoc();
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}
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SourceLoc getEndLoc() const {
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return NumArgumentLabels == 0 ? getBaseNameLoc() : getRParenLoc();
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}
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/// Retrieve the complete source range for this declaration name.
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SourceRange getSourceRange() const {
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if (NumArgumentLabels == 0) return getBaseNameLoc();
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return SourceRange(getBaseNameLoc(), getRParenLoc());
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}
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};
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}
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#endif // SWIFT_AST_DECL_NAME_LOC_H
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