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//===--- DiagnosticBridge.cpp - Diagnostic Bridge to swift-syntax ---------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This file implements the DiagnosticBridge class.
//
//===----------------------------------------------------------------------===//
#include "swift/AST/DiagnosticBridge.h"
#include "swift/AST/ASTBridging.h"
#include "swift/AST/DiagnosticConsumer.h"
#include "swift/AST/DiagnosticEngine.h"
#include "swift/Basic/SourceManager.h"
#include "swift/Bridging/ASTGen.h"
#include "llvm/Support/raw_ostream.h"
using namespace swift;
#if SWIFT_BUILD_SWIFT_SYNTAX
/// Enqueue a diagnostic with ASTGen's diagnostic rendering.
static void addQueueDiagnostic(void *queuedDiagnostics,
const DiagnosticInfo &info, SourceManager &SM) {
llvm::SmallString<256> text;
{
llvm::raw_svector_ostream out(text);
DiagnosticEngine::formatDiagnosticText(out, info.FormatString,
info.FormatArgs);
}
BridgedDiagnosticSeverity severity;
switch (info.Kind) {
case DiagnosticKind::Error:
severity = BridgedDiagnosticSeverity::BridgedError;
break;
case DiagnosticKind::Warning:
severity = BridgedDiagnosticSeverity::BridgedWarning;
break;
case DiagnosticKind::Remark:
severity = BridgedDiagnosticSeverity::BridgedRemark;
break;
case DiagnosticKind::Note:
severity = BridgedDiagnosticSeverity::BridgedNote;
break;
}
// Map the highlight ranges.
SmallVector<const void *, 2> highlightRanges;
for (const auto &range : info.Ranges) {
if (range.isInvalid())
continue;
highlightRanges.push_back(range.getStart().getOpaquePointerValue());
highlightRanges.push_back(range.getEnd().getOpaquePointerValue());
}
// FIXME: Translate Fix-Its.
swift_ASTGen_addQueuedDiagnostic(queuedDiagnostics, text.data(), text.size(),
severity, info.Loc.getOpaquePointerValue(),
highlightRanges.data(),
highlightRanges.size() / 2);
}
void DiagnosticBridge::enqueueDiagnostic(SourceManager &SM,
const DiagnosticInfo &Info,
unsigned innermostBufferID) {
// If there are no enqueued diagnostics, or we have hit a non-note
// diagnostic, flush any enqueued diagnostics and start fresh.
if (!queuedDiagnostics)
queuedDiagnostics = swift_ASTGen_createQueuedDiagnostics();
queueBuffer(SM, innermostBufferID);
addQueueDiagnostic(queuedDiagnostics, Info, SM);
}
void DiagnosticBridge::flush(llvm::raw_ostream &OS, bool includeTrailingBreak,
bool forceColors) {
if (!queuedDiagnostics)
return;
BridgedStringRef bridgedRenderedString{nullptr, 0};
swift_ASTGen_renderQueuedDiagnostics(queuedDiagnostics, /*contextSize=*/2,
forceColors ? 1 : 0,
&bridgedRenderedString);
auto renderedString = bridgedRenderedString.unbridged();
if (renderedString.data()) {
OS.write(renderedString.data(), renderedString.size());
swift_ASTGen_freeBridgedString(renderedString);
}
swift_ASTGen_destroyQueuedDiagnostics(queuedDiagnostics);
queuedDiagnostics = nullptr;
queuedBuffers.clear();
if (includeTrailingBreak)
OS << "\n";
}
void *DiagnosticBridge::getSourceFileSyntax(SourceManager &sourceMgr,
unsigned bufferID,
StringRef displayName) {
auto known = sourceFileSyntax.find({&sourceMgr, bufferID});
if (known != sourceFileSyntax.end())
return known->second;
auto bufferContents = sourceMgr.getEntireTextForBuffer(bufferID);
auto sourceFile = swift_ASTGen_parseSourceFile(
bufferContents, StringRef{"module"}, displayName,
/*declContextPtr=*/nullptr, BridgedGeneratedSourceFileKindNone);
sourceFileSyntax[{&sourceMgr, bufferID}] = sourceFile;
return sourceFile;
}
void DiagnosticBridge::queueBuffer(SourceManager &sourceMgr,
unsigned bufferID) {
QueuedBuffer knownSourceFile = queuedBuffers[bufferID];
if (knownSourceFile)
return;
// Find the parent and position in parent, if there is one.
int parentID = -1;
int positionInParent = 0;
std::string displayName;
auto generatedSourceInfo = sourceMgr.getGeneratedSourceInfo(bufferID);
if (generatedSourceInfo) {
SourceLoc parentLoc = generatedSourceInfo->originalSourceRange.getEnd();
if (parentLoc.isValid()) {
parentID = sourceMgr.findBufferContainingLoc(parentLoc);
positionInParent = sourceMgr.getLocOffsetInBuffer(parentLoc, parentID);
// Queue the parent buffer.
queueBuffer(sourceMgr, parentID);
}
if (!generatedSourceInfo->macroName.empty()) {
if (generatedSourceInfo->attachedMacroCustomAttr)
displayName = "macro expansion @" + generatedSourceInfo->macroName;
else
displayName = "macro expansion #" + generatedSourceInfo->macroName;
}
}
if (displayName.empty()) {
displayName =
sourceMgr.getDisplayNameForLoc(sourceMgr.getLocForBufferStart(bufferID))
.str();
}
auto sourceFile = getSourceFileSyntax(sourceMgr, bufferID, displayName);
swift_ASTGen_addQueuedSourceFile(queuedDiagnostics, bufferID, sourceFile,
(const uint8_t *)displayName.data(),
displayName.size(), parentID,
positionInParent);
queuedBuffers[bufferID] = sourceFile;
}
SmallVector<unsigned, 1>
DiagnosticBridge::getSourceBufferStack(SourceManager &sourceMgr,
SourceLoc loc) {
SmallVector<unsigned, 1> stack;
while (true) {
if (loc.isInvalid())
return stack;
unsigned bufferID = sourceMgr.findBufferContainingLoc(loc);
stack.push_back(bufferID);
auto generatedSourceInfo = sourceMgr.getGeneratedSourceInfo(bufferID);
if (!generatedSourceInfo)
return stack;
loc = generatedSourceInfo->originalSourceRange.getStart();
}
}
DiagnosticBridge::~DiagnosticBridge() {
assert(!queuedDiagnostics && "unflushed diagnostics");
for (const auto &sourceFileSyntax : sourceFileSyntax) {
swift_ASTGen_destroySourceFile(sourceFileSyntax.second);
}
}
#endif // SWIFT_BUILD_SWIFT_SYNTAX
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