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//===--- FixitApplyDiagnosticConsumer.cpp ---------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
#include "swift/Basic/SourceManager.h"
#include "swift/Frontend/Frontend.h"
#include "swift/Migrator/FixitApplyDiagnosticConsumer.h"
#include "swift/Migrator/Migrator.h"
#include "swift/Migrator/MigratorOptions.h"
#include "swift/AST/DiagnosticsSema.h"
using namespace swift;
using namespace swift::migrator;
FixitApplyDiagnosticConsumer::
FixitApplyDiagnosticConsumer(const StringRef Text,
const StringRef BufferName)
: Text(Text), BufferName(BufferName), NumFixitsApplied(0) {
RewriteBuf.Initialize(Text);
}
void FixitApplyDiagnosticConsumer::printResult(llvm::raw_ostream &OS) const {
RewriteBuf.write(OS);
}
void FixitApplyDiagnosticConsumer::handleDiagnostic(
SourceManager &SM, const DiagnosticInfo &Info) {
if (Info.Loc.isInvalid()) {
return;
}
auto ThisBufferID = SM.findBufferContainingLoc(Info.Loc);
auto ThisBufferName = SM.getIdentifierForBuffer(ThisBufferID);
if (ThisBufferName != BufferName) {
return;
}
if (!shouldTakeFixit(Info)) {
return;
}
for (const auto &Fixit : Info.FixIts) {
auto Offset = SM.getLocOffsetInBuffer(Fixit.getRange().getStart(),
ThisBufferID);
auto Length = Fixit.getRange().getByteLength();
auto Text = Fixit.getText();
// Ignore meaningless Fix-its.
if (Length == 0 && Text.size() == 0)
continue;
// Ignore pre-applied equivalents.
Replacement R{Offset, Length, Text.str()};
if (Replacements.count(R)) {
continue;
} else {
Replacements.insert(R);
}
if (Length == 0) {
RewriteBuf.InsertText(Offset, Text);
} else if (Text.size() == 0) {
RewriteBuf.RemoveText(Offset, Length);
} else {
RewriteBuf.ReplaceText(Offset, Length, Text);
}
++NumFixitsApplied;
}
}
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