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70f2b64ad9
integration Motivation: libIDE clients should be simple, and they should not have to translate token-based SourceRanges to character locations. This also allows us to remove the dependency of DiagnosticConsumer on the Lexer. Now the DiagnosticEngine translates the diagnostics to CharSourceRanges and passes character-based ranges to the DiagnosticConsumer. Swift SVN r7173
118 lines
3.8 KiB
C++
118 lines
3.8 KiB
C++
//===--- SourceLoc.cpp - SourceLoc and SourceRange implementations --------===//
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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 - 2015 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 http://swift.org/LICENSE.txt for license information
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// See http://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/Basic/SourceLoc.h"
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#include "swift/Basic/SourceManager.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace swift;
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SourceLoc SourceManager::getCodeCompletionLoc() const {
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return getLocForBufferStart(CodeCompletionBufferID)
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.getAdvancedLoc(CodeCompletionOffset);
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}
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SourceLoc SourceManager::getLocForBufferStart(unsigned BufferID) const {
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auto *Buffer = LLVMSourceMgr.getMemoryBuffer(BufferID);
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return SourceLoc(llvm::SMLoc::getFromPointer(Buffer->getBufferStart()));
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}
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unsigned SourceManager::getLocOffsetInBuffer(SourceLoc Loc,
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unsigned BufferID) const {
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auto *Buffer = LLVMSourceMgr.getMemoryBuffer(BufferID);
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assert(Loc.Value.getPointer() >= Buffer->getBuffer().begin() &&
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Loc.Value.getPointer() <= Buffer->getBuffer().end() &&
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"Location is not from the specified buffer");
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return Loc.Value.getPointer() - Buffer->getBuffer().begin();
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}
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unsigned SourceManager::getByteDistance(SourceLoc Start, SourceLoc End) const {
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#ifndef NDEBUG
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unsigned BufferID = findBufferContainingLoc(Start);
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auto *Buffer = LLVMSourceMgr.getMemoryBuffer(BufferID);
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assert(End.Value.getPointer() >= Buffer->getBuffer().begin() &&
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End.Value.getPointer() <= Buffer->getBuffer().end() &&
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"End location is not from the same buffer");
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#endif
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// When we have a rope buffer, could be implemented in terms of
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// getLocOffsetInBuffer().
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return End.Value.getPointer() - Start.Value.getPointer();
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}
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void SourceLoc::printLineAndColumn(raw_ostream &OS,
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const SourceManager &SM) const {
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if (isInvalid()) {
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OS << "<invalid loc>";
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return;
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}
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auto LineAndCol = SM.getLineAndColumn(*this);
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OS << "line:" << LineAndCol.first << ':' << LineAndCol.second;
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}
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void SourceLoc::print(raw_ostream &OS, const SourceManager &SM,
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unsigned &LastBufferID) const {
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if (isInvalid()) {
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OS << "<invalid loc>";
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return;
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}
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unsigned BufferID = SM.findBufferContainingLoc(*this);
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if (BufferID != LastBufferID) {
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OS << SM->getMemoryBuffer(BufferID)->getBufferIdentifier();
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LastBufferID = BufferID;
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} else {
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OS << "line";
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}
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auto LineAndCol = SM.getLineAndColumn(*this, BufferID);
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OS << ':' << LineAndCol.first << ':' << LineAndCol.second;
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}
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void SourceLoc::dump(const SourceManager &SM) const {
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print(llvm::errs(), SM);
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}
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void SourceRange::print(raw_ostream &OS, const SourceManager &SM,
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unsigned &LastBufferID, bool PrintText) const {
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OS << '[';
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Start.print(OS, SM, LastBufferID);
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OS << " - ";
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End.print(OS, SM, LastBufferID);
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OS << ']';
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if (Start.isInvalid() || End.isInvalid())
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return;
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if (PrintText) {
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OS << " RangeText=\""
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<< StringRef(Start.Value.getPointer(),
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End.Value.getPointer() - Start.Value.getPointer()+1)
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<< '"';
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}
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}
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void SourceRange::dump(const SourceManager &SM) const {
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print(llvm::errs(), SM);
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}
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CharSourceRange::CharSourceRange(SourceManager &SM, SourceLoc Start,
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SourceLoc End)
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: Start(Start) {
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assert(Start.isValid() == End.isValid() &&
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"Start and end should either both be valid or both be invalid!");
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if (Start.isValid())
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ByteLength = SM.getByteDistance(Start, End);
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}
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