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//===--- ModuleDiagsConsumer.cpp - Print module differ diagnostics --*- C++ -*-===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2025 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 ModuleDifferDiagsConsumer class, which displays
// diagnostics from the module differ as text to an output.
//
//===----------------------------------------------------------------------===//
#include "swift/APIDigester/ModuleDiagsConsumer.h"
#include "swift/AST/DiagnosticEngine.h"
#include "swift/AST/DiagnosticList.h"
#include "swift/Basic/Assertions.h"
using namespace swift;
static StringRef getCategoryName(DiagID ID) {
switch(ID) {
case DiagID::removed_decl:
return "/* Removed Decls */";
case DiagID::moved_decl:
case DiagID::decl_kind_changed:
return "/* Moved Decls */";
case DiagID::renamed_decl:
case DiagID::objc_name_change:
return "/* Renamed Decls */";
case DiagID::decl_attr_change:
case DiagID::decl_new_attr:
case DiagID::func_self_access_change:
case DiagID::new_decl_without_intro:
return "/* Decl Attribute changes */";
case DiagID::default_arg_removed:
case DiagID::decl_type_change:
case DiagID::func_type_escaping_changed:
case DiagID::param_ownership_change:
case DiagID::type_witness_change:
return "/* Type Changes */";
case DiagID::raw_type_change:
return "/* RawRepresentable Changes */";
case DiagID::generic_sig_change:
case DiagID::demangled_name_changed:
return "/* Generic Signature Changes */";
case DiagID::enum_case_added:
case DiagID::decl_added:
case DiagID::decl_reorder:
case DiagID::var_has_fixed_order_change:
case DiagID::func_has_fixed_order_change:
return "/* Fixed-layout Type Changes */";
case DiagID::conformance_added:
case DiagID::conformance_removed:
case DiagID::optional_req_changed:
case DiagID::existing_conformance_added:
return "/* Protocol Conformance Change */";
case DiagID::default_associated_type_removed:
case DiagID::protocol_req_added:
case DiagID::decl_new_witness_table_entry:
return "/* Protocol Requirement Change */";
case DiagID::super_class_removed:
case DiagID::super_class_changed:
case DiagID::no_longer_open:
case DiagID::desig_init_added:
case DiagID::added_invisible_designated_init:
case DiagID::not_inheriting_convenience_inits:
return "/* Class Inheritance Change */";
default:
return "/* Others */";
}
}
swift::ide::api::
ModuleDifferDiagsConsumer::ModuleDifferDiagsConsumer(bool DiagnoseModuleDiff,
llvm::raw_ostream &OS):
PrintingDiagnosticConsumer(OS), OS(OS),
DiagnoseModuleDiff(DiagnoseModuleDiff) {
#define DIAG(KIND, ID, Group, Options, Text, Signature) \
auto ID = getCategoryName(DiagID::ID); \
assert(!ID.empty()); \
AllDiags[ID] = std::set<std::string>();
#include "swift/AST/DiagnosticsModuleDiffer.def"
}
void swift::ide::api::ModuleDifferDiagsConsumer::handleDiagnostic(
SourceManager &SM, const DiagnosticInfo &Info) {
auto Category = getCategoryName(Info.ID);
if (Category.empty()) {
PrintingDiagnosticConsumer::handleDiagnostic(SM, Info);
return;
}
if (!DiagnoseModuleDiff)
return;
llvm::SmallString<256> Text;
{
llvm::raw_svector_ostream Out(Text);
DiagnosticEngine::formatDiagnosticText(Out, Info.FormatString,
Info.FormatArgs);
}
AllDiags[Category].insert(Text.str().str());
}
swift::ide::api::ModuleDifferDiagsConsumer::~ModuleDifferDiagsConsumer() {
for (auto &Pair: AllDiags) {
OS << "\n";
OS << Pair.first << "\n";
for (auto &Item: Pair.second) {
OS << Item << "\n";
}
}
}
void swift::ide::api::FilteringDiagnosticConsumer::flush() {
for (auto &consumer: subConsumers) {
consumer->flush();
}
}
void swift::ide::api::
FilteringDiagnosticConsumer::informDriverOfIncompleteBatchModeCompilation() {
for (auto &consumer: subConsumers) {
consumer->informDriverOfIncompleteBatchModeCompilation();
}
}
bool swift::ide::api::FilteringDiagnosticConsumer::finishProcessing() {
for (auto &consumer: subConsumers) {
consumer->finishProcessing();
}
return false;
}
bool swift::ide::api::FilteringDiagnosticConsumer::shouldProceed(const DiagnosticInfo &Info) {
if (allowedBreakages->empty()) {
return true;
}
llvm::SmallString<256> Text;
{
llvm::raw_svector_ostream Out(Text);
DiagnosticEngine::formatDiagnosticText(Out, Info.FormatString,
Info.FormatArgs);
}
return allowedBreakages->count(Text.str()) == 0;
}
void swift::ide::api::
FilteringDiagnosticConsumer::handleDiagnostic(SourceManager &SM,
const DiagnosticInfo &RawInfo) {
if (shouldProceed(RawInfo)) {
DiagnosticInfo Info = RawInfo;
if (DowngradeToWarning && Info.Kind == DiagnosticKind::Error) {
Info.Kind = DiagnosticKind::Warning;
}
if (Info.Kind == DiagnosticKind::Error) {
HasError = true;
}
for (auto &consumer: subConsumers) {
consumer->handleDiagnostic(SM, Info);
}
}
}
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