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InsightsHelpers.cpp
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/******************************************************************************
*
* C++ Insights, copyright (C) by Andreas Fertig
* Distributed under an MIT license. See LICENSE for details
*
****************************************************************************/
#include "InsightsHelpers.h"
#include "ASTHelpers.h"
#include "ClangCompat.h"
#include "CodeGenerator.h"
#include "DPrint.h"
#include "Insights.h"
#include "InsightsStaticStrings.h"
#include "OutputFormatHelper.h"
#include "clang/Frontend/CompilerInstance.h"
#include "clang/Sema/Lookup.h"
//-----------------------------------------------------------------------------
namespace clang::insights {
ScopeHandler::ScopeHandler(const Decl* d)
: mStack{mGlobalStack}
, mHelper{mScope.length()}
{
mStack.push(mHelper);
if(const auto* recordDecl = dyn_cast_or_null<CXXRecordDecl>(d)) {
mScope.append(GetName(*recordDecl));
if(const auto* classTmplSpec = dyn_cast_or_null<ClassTemplateSpecializationDecl>(recordDecl)) {
OutputFormatHelper ofm{};
CodeGenerator codeGenerator{ofm};
codeGenerator.InsertTemplateArgs(*classTmplSpec);
mScope.append(ofm);
}
} else if(const auto* namespaceDecl = dyn_cast_or_null<NamespaceDecl>(d)) {
mScope.append(namespaceDecl->getName());
}
if(not mScope.empty()) {
mScope.append("::");
}
}
//-----------------------------------------------------------------------------
ScopeHandler::~ScopeHandler()
{
const auto length = mStack.pop()->mLength;
mScope.resize(length);
}
//-----------------------------------------------------------------------------
std::string ScopeHandler::RemoveCurrentScope(std::string name)
{
if(mScope.length()) {
auto findAndReplace = [&name](const std::string& scope) {
if(const auto startPos = name.find(scope, 0); std::string::npos != startPos) {
if(const auto pos = startPos + scope.length();
(pos > name.length()) or (name[pos] != '*')) { // keep member points (See #374)
name.replace(startPos, scope.length(), ""sv);
return true;
}
}
return false;
};
// The default is that we can replace the entire scope. Suppose we are currently in N::X and having a symbol
// N::X::y then N::X:: is removed.
if(not findAndReplace(mScope)) {
// A special case where we need to remove the scope without the last item.
std::string tmp{mScope};
tmp.resize(mGlobalStack.back().mLength);
findAndReplace(tmp);
}
}
return name;
}
//-----------------------------------------------------------------------------
static std::string GetNamePlain(const NamedDecl& decl)
{
if(const auto* fd = dyn_cast_or_null<FunctionDecl>(&decl); fd and GetInsightsOptions().UseShow2C) {
if(fd->isOverloadedOperator()) {
switch(fd->getOverloadedOperator()) {
#define OVERLOADED_OPERATOR(Name, Spelling, Token, Unary, Binary, MemberOnly) \
case OO_##Name: return "operator" #Name;
#include "clang/Basic/OperatorKinds.def"
#undef OVERLOADED_OPERATOR
default: break;
}
}
}
return decl.getDeclName().getAsString();
}
std::string GetPlainName(const DeclRefExpr& DRE)
{
return ScopeHandler::RemoveCurrentScope(GetNamePlain(*DRE.getDecl()));
}
//-----------------------------------------------------------------------------
STRONG_BOOL(InsightsSuppressScope);
//-----------------------------------------------------------------------------
STRONG_BOOL(InsightsCanonicalTypes);
//-----------------------------------------------------------------------------
static std::string GetUnqualifiedScopelessName(const Type* type, const InsightsSuppressScope supressScope);
//-----------------------------------------------------------------------------
struct CppInsightsPrintingPolicy : PrintingPolicy
{
unsigned CppInsightsUnqualified : 1; // NOLINT
InsightsSuppressScope CppInsightsSuppressScope; // NOLINT
CppInsightsPrintingPolicy(const Unqualified unqualified,
const InsightsSuppressScope supressScope,
const InsightsCanonicalTypes insightsCanonicalTypes = InsightsCanonicalTypes::No)
: PrintingPolicy{LangOptions{}}
{
adjustForCPlusPlus();
SuppressUnwrittenScope = true;
Alignof = true;
ConstantsAsWritten = true;
AnonymousTagLocations = false; // does remove filename and line for from lambdas in parameters
PrintCanonicalTypes = InsightsCanonicalTypes::Yes == insightsCanonicalTypes;
CppInsightsUnqualified = (Unqualified::Yes == unqualified);
CppInsightsSuppressScope = supressScope;
}
CppInsightsPrintingPolicy()
: CppInsightsPrintingPolicy{Unqualified::No, InsightsSuppressScope::No}
{
}
};
//-----------------------------------------------------------------------------
void ReplaceAll(std::string& str, std::string_view from, std::string_view to)
{
size_t start_pos = 0;
while((start_pos = str.find(from, start_pos)) != std::string::npos) {
str.replace(start_pos, from.length(), to);
start_pos += to.length(); // Handles case where 'to' is a substring of 'from'
}
}
//-----------------------------------------------------------------------------
namespace details {
static void
BuildNamespace(std::string& fullNamespace, const NestedNameSpecifier* stmt, const IgnoreNamespace ignoreNamespace)
{
RETURN_IF(not stmt);
if(const auto* prefix = stmt->getPrefix();
prefix and not((NestedNameSpecifier::TypeSpecWithTemplate == stmt->getKind()) and
isa<DependentTemplateSpecializationType>(stmt->getAsType()))) {
BuildNamespace(fullNamespace, prefix, ignoreNamespace);
}
switch(stmt->getKind()) {
case NestedNameSpecifier::Identifier: fullNamespace.append(stmt->getAsIdentifier()->getName()); break;
case NestedNameSpecifier::Namespace:
RETURN_IF((IgnoreNamespace::Yes == ignoreNamespace) or (stmt->getAsNamespace()->isAnonymousNamespace()));
fullNamespace.append(stmt->getAsNamespace()->getName());
break;
case NestedNameSpecifier::NamespaceAlias: fullNamespace.append(stmt->getAsNamespaceAlias()->getName()); break;
case NestedNameSpecifier::TypeSpecWithTemplate:
if(auto* dependentSpecType = stmt->getAsType()->getAs<DependentTemplateSpecializationType>()) {
fullNamespace.append(GetElaboratedTypeKeyword(dependentSpecType->getKeyword()));
}
[[fallthrough]];
case NestedNameSpecifier::TypeSpec:
fullNamespace.append(GetUnqualifiedScopelessName(stmt->getAsType(), InsightsSuppressScope::Yes));
// The template parameters are already contained in the type we inserted above.
break;
default: break;
}
fullNamespace.append("::"sv);
}
//-----------------------------------------------------------------------------
} // namespace details
std::string GetNestedName(const NestedNameSpecifier* nns, const IgnoreNamespace ignoreNamespace)
{
std::string ret{};
if(nns) {
details::BuildNamespace(ret, nns, ignoreNamespace);
}
return ret;
}
//-----------------------------------------------------------------------------
static const std::string GetAsCPPStyleString(const QualType& t, const CppInsightsPrintingPolicy& printingPolicy)
{
return t.getAsString(printingPolicy);
}
//-----------------------------------------------------------------------------
std::string BuildInternalVarName(const std::string_view& varName)
{
return StrCat("__", varName);
}
//-----------------------------------------------------------------------------
static std::string
BuildInternalVarName(const std::string_view& varName, const SourceLocation& loc, const SourceManager& sm)
{
const auto lineNo = sm.getSpellingLineNumber(loc);
return StrCat(BuildInternalVarName(varName), lineNo);
}
//-----------------------------------------------------------------------------
void InsertBefore(std::string& source, const std::string_view& find, const std::string_view& replace)
{
const std::string::size_type i = source.find(find, 0);
if(std::string::npos != i) {
source.insert(i, replace);
}
}
//-----------------------------------------------------------------------------
static void InsertAfter(std::string& source, const std::string_view& find, const std::string_view& replace)
{
const std::string::size_type i = source.find(find, 0);
if(std::string::npos != i) {
source.insert(i + find.length(), replace);
}
}
//-----------------------------------------------------------------------------
std::string MakeLineColumnName(const SourceManager& sm, const SourceLocation& loc, const std::string_view& prefix)
{
// In case of a macro expansion the expansion(line/column) number gives a unique value.
const auto lineNo = loc.isMacroID() ? sm.getExpansionLineNumber(loc) : sm.getSpellingLineNumber(loc);
const auto columnNo = loc.isMacroID() ? sm.getExpansionColumnNumber(loc) : sm.getSpellingColumnNumber(loc);
return StrCat(prefix, lineNo, "_"sv, columnNo);
}
//-----------------------------------------------------------------------------
static std::string MakeLineColumnName(const Decl& decl, const std::string_view prefix)
{
return MakeLineColumnName(GetSM(decl), decl.getBeginLoc(), prefix);
}
//-----------------------------------------------------------------------------
std::string GetLambdaName(const CXXRecordDecl& lambda)
{
static constexpr auto lambdaPrefix{"__lambda_"sv};
return MakeLineColumnName(lambda, lambdaPrefix);
}
//-----------------------------------------------------------------------------
static std::string GetAnonymStructOrUnionName(const CXXRecordDecl& cxxRecordDecl)
{
static constexpr auto prefix{"__anon_"sv};
return MakeLineColumnName(cxxRecordDecl, prefix);
}
//-----------------------------------------------------------------------------
std::string BuildRetTypeName(const Decl& decl)
{
static constexpr auto retTypePrefix{"retType_"sv};
return MakeLineColumnName(decl, retTypePrefix);
}
//-----------------------------------------------------------------------------
const QualType GetDesugarType(const QualType& QT)
{
if(QT.getTypePtrOrNull()) {
if(const auto* autoType = QT->getAs<clang::AutoType>(); autoType and autoType->isSugared()) {
const auto dt = autoType->getDeducedType();
if(const auto* et = dt->getAs<ElaboratedType>()) {
return et->getNamedType();
} else {
return dt;
}
} else if(auto declType = QT->getAs<clang::DecltypeType>()) {
return declType->desugar();
}
}
return QT;
}
//-----------------------------------------------------------------------------
const std::string EvaluateAsFloat(const FloatingLiteral& expr)
{
// return std::to_string(expr.getValueAsApproximateDouble());
SmallString<16> str{};
expr.getValue().toString(str);
if(std::string::npos == str.find('.')) {
/* in case it is a number like 10.0 toString() seems to leave out the .0. However, as this distinguished
* between an integer and a floating point literal we need that dot. */
str.append(".0"sv);
}
return std::string{str.str()};
}
//-----------------------------------------------------------------------------
static const VarDecl* GetVarDeclFromDeclRefExpr(const DeclRefExpr& declRefExpr)
{
const auto* valueDecl = declRefExpr.getDecl();
return dyn_cast_or_null<VarDecl>(valueDecl);
}
//-----------------------------------------------------------------------------
// own implementation due to lambdas
std::string GetDeclContext(const DeclContext* ctx, WithTemplateParameters withTemplateParameters)
{
OutputFormatHelper mOutputFormatHelper{};
SmallVector<const DeclContext*, 8> contexts{};
while(ctx) {
if(isa<NamedDecl>(ctx)) {
contexts.push_back(ctx);
}
ctx = ctx->getParent();
}
for(const auto* declContext : llvm::reverse(contexts)) {
if(const auto* classTmplSpec = dyn_cast<ClassTemplateSpecializationDecl>(declContext)) {
mOutputFormatHelper.Append(classTmplSpec->getName());
CodeGenerator codeGenerator{mOutputFormatHelper};
codeGenerator.InsertTemplateArgs(*classTmplSpec);
} else if(const auto* nd = dyn_cast<NamespaceDecl>(declContext)) {
if(nd->isAnonymousNamespace() or nd->isInline()) {
continue;
}
mOutputFormatHelper.Append(nd->getName());
} else if(const auto* rd = dyn_cast<RecordDecl>(declContext)) {
if(not rd->getIdentifier()) {
continue;
}
mOutputFormatHelper.Append(rd->getName());
// A special case at least for out-of-line static member variables of a class template. They need to carry
// the template parameters of the class template.
if(WithTemplateParameters::Yes == withTemplateParameters /*declContext->isNamespace() or declContext->getLexicalParent()->isNamespace() or declContext->getLexicalParent()->isTranslationUnit()*/) {
if(const auto* cxxRecordDecl = dyn_cast_or_null<CXXRecordDecl>(rd)) {
if(const auto* classTmpl = cxxRecordDecl->getDescribedClassTemplate()) {
CodeGenerator codeGenerator{mOutputFormatHelper};
codeGenerator.InsertTemplateParameters(*classTmpl->getTemplateParameters(),
CodeGenerator::TemplateParamsOnly::Yes);
}
}
}
} else if(dyn_cast<FunctionDecl>(declContext)) {
continue;
} else if(const auto* ed = dyn_cast<EnumDecl>(declContext)) {
if(not ed->isScoped()) {
continue;
}
mOutputFormatHelper.Append(ed->getName());
} else {
mOutputFormatHelper.Append(cast<NamedDecl>(declContext)->getName());
}
mOutputFormatHelper.Append("::"sv);
}
return mOutputFormatHelper.GetString();
}
//-----------------------------------------------------------------------------
namespace details {
STRONG_BOOL(RemoveCurrentScope); ///!< In some cases we need to keep the scope for a while, so don't remove the scope
/// we are in right now.
//-----------------------------------------------------------------------------
static std::string GetQualifiedName(const NamedDecl& decl,
const RemoveCurrentScope removeCurrentScope = RemoveCurrentScope::Yes)
{
std::string scope{GetDeclContext(decl.getDeclContext())};
scope += decl.getName();
if(RemoveCurrentScope::Yes == removeCurrentScope) {
return ScopeHandler::RemoveCurrentScope(scope);
}
return scope;
}
//-----------------------------------------------------------------------------
static std::string GetScope(const DeclContext* declCtx,
const RemoveCurrentScope removeCurrentScope = RemoveCurrentScope::Yes)
{
std::string name{};
if(not declCtx->isTranslationUnit() and not declCtx->isFunctionOrMethod()) {
while(declCtx->isInlineNamespace()) {
declCtx = declCtx->getParent();
}
if(not declCtx->isTranslationUnit() and (declCtx->isNamespace() or declCtx->getParent()->isTranslationUnit())) {
if(const auto* namedDecl = dyn_cast_or_null<NamedDecl>(declCtx)) {
name = GetQualifiedName(*namedDecl, removeCurrentScope);
name.append("::"sv);
}
}
}
return name;
}
//-----------------------------------------------------------------------------
/// \brief SimpleTypePrinter a partially substitution of Clang's TypePrinter.
///
/// With Clang 9 there seems to be a change in `lib/AST/TypePrinter.cpp` in `printTemplateTypeParmBefore`. It now
/// inserts `auto` when it is a lambda auto parameter. Which is correct, but C++ Insights needs the
/// template parameter name to make up compiling code. Hence, this `if` "overrides" the implementation of
/// TypePrinter in that case.
///
/// It also drops some former code which handled `ClassTemplateSpecializationDecl` in a special way. Here the template
/// parameters can be lambdas. Those they need a proper name.
class SimpleTypePrinter
{
private:
const QualType& mType;
const CppInsightsPrintingPolicy& mPrintingPolicy;
OutputFormatHelper mData{};
std::string mDataAfter{};
bool mHasData{false};
bool mSkipSpace{false};
bool mScanningArrayDimension{}; //!< Only the outer most ConstantArrayType handles the array dimensions and size
std::string mScope{}; //!< A scope coming from an ElaboratedType which is used for a
//!< ClassTemplateSpecializationDecl if there is no other scope
bool HandleType(const TemplateTypeParmType* type)
{
const TemplateTypeParmDecl* decl = type->getDecl();
if((nullptr == type->getIdentifier()) or
(decl and decl->isImplicit()) /* this fixes auto operator()(type_parameter_0_0 container) const */) {
AppendTemplateTypeParamName(mData, decl, true, type);
return true;
}
return false;
}
bool HandleType(const LValueReferenceType* type)
{
mDataAfter += " &"sv;
return HandleType(type->getPointeeType().getTypePtrOrNull());
}
bool HandleType(const RValueReferenceType* type)
{
mDataAfter += " &&"sv;
return HandleType(type->getPointeeType().getTypePtrOrNull());
}
bool HandleType(const PointerType* type)
{
mDataAfter += " *"sv;
return HandleType(type->getPointeeType().getTypePtrOrNull());
}
bool HandleType(const InjectedClassNameType* type) { return HandleType(type->getInjectedTST()); }
bool HandleType(const RecordType* type)
{
/// In case one of the template parameters is a lambda we need to insert the made up name.
if(const auto* tt = dyn_cast_or_null<ClassTemplateSpecializationDecl>(type->getDecl())) {
if(const auto* identifierName = mType.getBaseTypeIdentifier()) {
const auto& scope = GetScope(type->getDecl()->getDeclContext());
// If we don't have a scope with GetScope use a possible one from ElaboratedType
if((InsightsSuppressScope::Yes == mPrintingPolicy.CppInsightsSuppressScope) or scope.empty()) {
mData.Append(mScope);
} else {
mData.Append(scope);
}
mData.Append(identifierName->getName());
CodeGenerator codeGenerator{mData};
codeGenerator.InsertTemplateArgs(*tt);
return true;
}
} else if(const auto* cxxRecordDecl = type->getAsCXXRecordDecl()) {
// Special handling for dependent types. For example, ClassOperatorHandler7Test.cpp A<...* >::B.
if(type->isDependentType()) {
std::string context{GetDeclContext(type->getDecl()->getDeclContext())};
if(not context.empty()) {
mData.Append(std::move(context));
mData.Append(cxxRecordDecl->getName());
return true;
}
}
if(cxxRecordDecl->isLambda()) {
mData.Append(GetLambdaName(*cxxRecordDecl));
return true;
}
// Handle anonymous struct or union.
if(IsAnonymousStructOrUnion(cxxRecordDecl)) {
mData.Append(GetAnonymStructOrUnionName(*cxxRecordDecl));
return true;
}
// we need a name here, as DecltypeType always says true
mData.Append(GetName(*cxxRecordDecl));
}
return false;
}
bool HandleType(const AutoType* type) { return HandleType(type->getDeducedType().getTypePtrOrNull()); }
bool HandleType(const SubstTemplateTypeParmType* type)
{
return HandleType(type->getReplacementType().getTypePtrOrNull());
}
bool HandleType(const ElaboratedType* type)
{
const IgnoreNamespace ignoreNamespace = (mPrintingPolicy.CppInsightsSuppressScope == InsightsSuppressScope::Yes)
? IgnoreNamespace::No
: IgnoreNamespace::Yes;
mScope = GetNestedName(type->getQualifier(), ignoreNamespace);
const bool ret = HandleType(type->getNamedType().getTypePtrOrNull());
mScope.clear();
return ret;
}
bool HandleType(const DependentTemplateSpecializationType* type)
{
mData.Append(GetElaboratedTypeKeyword(type->getKeyword()),
GetNestedName(type->getQualifier()),
kwTemplateSpace,
type->getIdentifier()->getName());
CodeGenerator codeGenerator{mData};
codeGenerator.InsertTemplateArgs(*type);
return true;
}
bool HandleType(const DeducedTemplateSpecializationType* type)
{
return HandleType(type->getDeducedType().getTypePtrOrNull());
}
bool HandleType(const TemplateSpecializationType* type)
{
if(type->getAsRecordDecl()) {
// Only if it was some sort of "used" `RecordType` we continue here.
if(HandleType(type->getAsRecordDecl()->getTypeForDecl())) {
HandleType(type->getPointeeType().getTypePtrOrNull());
return true;
}
}
/// This is a specialty discovered with #188_2. In some cases there is a `TemplateTypeParmDecl` which has no
/// identifier name. Then it will end up as `type-parameter-...`. At least in #188_2: _Head_base<_Idx,
/// type_parameter_0_1, true> the repetition of the template specialization arguments is not required.
/// `hasNoName` tries to detect this case and does then print the name of the template only.
const bool hasNoName{[&] {
for(const auto& arg : type->template_arguments()) {
StringStream sstream{};
sstream.Print(arg);
if(Contains(sstream.str(), "type-parameter"sv)) {
return true;
}
}
return false;
}()};
if(hasNoName) {
StringStream sstream{};
sstream.Print(*type);
mData.Append(sstream.str());
return true;
}
return false;
}
bool HandleType(const MemberPointerType* type)
{
HandleType(type->getPointeeType().getTypePtrOrNull());
mData.Append('(');
const bool ret = HandleType(type->getClass());
mData.Append("::*)"sv);
HandleTypeAfter(type->getPointeeType().getTypePtrOrNull());
return ret;
}
bool HandleType(const FunctionProtoType* type) { return HandleType(type->getReturnType().getTypePtrOrNull()); }
void HandleTypeAfter(const FunctionProtoType* type)
{
mData.Append('(');
mSkipSpace = true;
for(OnceFalse needsComma{}; const auto& t : type->getParamTypes()) {
if(needsComma) {
mData.Append(", "sv);
}
HandleType(t.getTypePtrOrNull());
}
mSkipSpace = false;
mData.Append(')');
if(not type->getMethodQuals().empty()) {
mData.Append(" "sv, type->getMethodQuals().getAsString());
}
/// Currently, we are skipping `T->getRefQualifier()` and the exception specification, as well as the trailing
/// return type.
}
bool HandleType(const BuiltinType* type)
{
mData.Append(type->getName(mPrintingPolicy));
if(not mSkipSpace) {
mData.Append(' ');
}
return false;
}
bool HandleType(const TypedefType* type)
{
if(const auto* decl = type->getDecl()) {
/// Another filter place for type-parameter where it is contained in the FQN but leads to none compiling
/// code. Remove it to keep the code valid.
if(Contains(decl->getQualifiedNameAsString(), "type-parameter"sv)) {
auto* identifierInfo = decl->getIdentifier();
mData.Append(identifierInfo->getName());
return true;
}
return HandleType(decl->getUnderlyingType().getTypePtrOrNull());
}
return HandleType(type->getPointeeType().getTypePtrOrNull());
}
bool HandleType(const ConstantArrayType* type)
{
// Only the outer most ConstantArrayType generates the aary dimensions, block others.
bool scanningArrayDimension = false;
if(not mScanningArrayDimension) {
mScanningArrayDimension = true;
scanningArrayDimension = true;
}
const bool ret = HandleType(type->getElementType().getTypePtrOrNull());
// Handle the array dimension after the type has been parsed.
if(scanningArrayDimension) {
do {
mData.Append("["sv, GetSize(type), "]"sv);
} while((type = dyn_cast_or_null<ConstantArrayType>(type->getElementType().getTypePtrOrNull())));
mScanningArrayDimension = false;
}
return ret;
}
bool HandleType(const PackExpansionType* type)
{
const bool ret = HandleType(type->getPattern().getTypePtrOrNull());
if(ret) {
mData.Append(kwElipsis);
}
return ret;
}
bool HandleType(const DecltypeType* type)
{
// A DecltypeType in a template definition is unevaluated and refers ti itself. This check ensures, that in such
// a situation no expansion is performed.
if(not isa_and_nonnull<DecltypeType>(type->desugar().getTypePtrOrNull())) {
const bool skipSpace{mSkipSpace};
mSkipSpace = true;
HandleType(type->desugar().getTypePtrOrNull());
mSkipSpace = skipSpace;
// if we hit a DecltypeType always use the expanded version to support things like a DecltypeType wrapped in
// an LValueReferenceType
return true;
}
if(not isa_and_nonnull<DeclRefExpr>(type->getUnderlyingExpr())) {
P0315Visitor visitor{mData};
return not visitor.TraverseStmt(type->getUnderlyingExpr());
}
return false;
}
bool HandleType(const Type* type)
{
#define HANDLE_TYPE(t) \
if(isa<t>(type)) { \
return HandleType(dyn_cast_or_null<t>(type)); \
}
if(nullptr == type) {
return false;
}
HANDLE_TYPE(FunctionProtoType);
HANDLE_TYPE(PointerType);
HANDLE_TYPE(LValueReferenceType);
HANDLE_TYPE(RValueReferenceType);
HANDLE_TYPE(TemplateTypeParmType);
HANDLE_TYPE(RecordType);
HANDLE_TYPE(AutoType);
HANDLE_TYPE(SubstTemplateTypeParmType);
HANDLE_TYPE(ElaboratedType);
HANDLE_TYPE(TemplateSpecializationType);
HANDLE_TYPE(DeducedTemplateSpecializationType);
HANDLE_TYPE(MemberPointerType);
HANDLE_TYPE(BuiltinType);
HANDLE_TYPE(TypedefType);
HANDLE_TYPE(ConstantArrayType);
HANDLE_TYPE(InjectedClassNameType);
HANDLE_TYPE(DependentTemplateSpecializationType);
HANDLE_TYPE(PackExpansionType);
HANDLE_TYPE(DecltypeType);
#undef HANDLE_TYPE
return false;
}
void HandleTypeAfter(const Type* type)
{
#define HANDLE_TYPE(t) \
if(isa<t>(type)) { \
HandleTypeAfter(dyn_cast_or_null<t>(type)); \
}
if(nullptr != type) {
HANDLE_TYPE(FunctionProtoType);
}
}
void AddCVQualifiers(const Qualifiers& quals)
{
if((false == mPrintingPolicy.CppInsightsUnqualified) and not quals.empty()) {
mData.Append(quals.getAsString());
if(not mData.empty() and not mSkipSpace) {
mData.Append(' ');
}
}
}
public:
SimpleTypePrinter(const QualType& qt, const CppInsightsPrintingPolicy& printingPolicy)
: mType{qt}
, mPrintingPolicy{printingPolicy}
{
}
std::string& GetString() { return mData.GetString(); }
bool GetTypeString()
{
if(const SplitQualType splitted{mType.split()}; splitted.Quals.empty()) {
const auto& canonicalType = mType.getCanonicalType();
if(canonicalType->getPointeeType().getLocalFastQualifiers()) {
AddCVQualifiers(canonicalType->getPointeeType().getLocalQualifiers());
} else if(canonicalType.getLocalFastQualifiers()) {
AddCVQualifiers(canonicalType.getLocalQualifiers());
}
} else {
AddCVQualifiers(splitted.Quals);
}
const auto* typePtr = mType.getTypePtrOrNull();
mHasData = HandleType(typePtr);
mData.Append(mDataAfter);
// Take care of 'char* const'
if(mType.getQualifiers().hasFastQualifiers()) {
const QualType fastQualifierType{typePtr, mType.getQualifiers().getFastQualifiers()};
mSkipSpace = true;
AddCVQualifiers(fastQualifierType.getCanonicalType()->getPointeeType().getLocalQualifiers());
}
return mHasData;
}
};
//-----------------------------------------------------------------------------
static std::string GetName(QualType t,
const Unqualified unqualified = Unqualified::No,
const InsightsSuppressScope supressScope = InsightsSuppressScope::No)
{
const CppInsightsPrintingPolicy printingPolicy{unqualified,
supressScope,
(isa<AutoType>(t.getTypePtrOrNull())) ? InsightsCanonicalTypes::Yes
: InsightsCanonicalTypes::No};
QualType tt = t;
if(const auto* et = tt->getAs<ElaboratedType>()) {
if((nullptr == et->getQualifier()) and (nullptr == et->getOwnedTagDecl())) {
const auto quals = tt.getLocalFastQualifiers();
tt = et->getNamedType();
tt.setLocalFastQualifiers(quals);
}
}
if(SimpleTypePrinter st{t, printingPolicy}; st.GetTypeString()) {
return ScopeHandler::RemoveCurrentScope(st.GetString());
} else if(true == printingPolicy.CppInsightsUnqualified) {
return ScopeHandler::RemoveCurrentScope(GetAsCPPStyleString(tt.getUnqualifiedType(), printingPolicy));
}
return ScopeHandler::RemoveCurrentScope(GetAsCPPStyleString(tt, printingPolicy));
}
} // namespace details
//-----------------------------------------------------------------------------
static bool HasOverload(const FunctionDecl* fd)
{
auto* ncfd = const_cast<FunctionDecl*>(fd);
Sema& sema = GetGlobalCI().getSema();
LookupResult result{sema, ncfd->getDeclName(), {}, Sema::LookupOrdinaryName};
if(sema.LookupName(result, sema.getScopeForContext(ncfd->getDeclContext()))) {
return LookupResult::FoundOverloaded == result.getResultKind();
}
return false;
}
//-----------------------------------------------------------------------------
std::string GetSpecialMemberName(const ValueDecl* vd);
//-----------------------------------------------------------------------------
std::string GetCfrontOverloadedFunctionName(const FunctionDecl* fd)
{
std::string name{};
if(fd and GetInsightsOptions().UseShow2C and HasOverload(fd) and not fd->isMain()) {
name = GetSpecialMemberName(fd);
if(not fd->param_empty()) {
name += "_";
for(const auto& param : fd->parameters()) {
QualType t = param->getType();
QualType plainType = t.getNonReferenceType();
plainType.removeLocalConst();
plainType.removeLocalVolatile();
std::string ptr{};
while(plainType->isPointerType()) {
ptr += "p";
plainType = plainType->getPointeeType();
auto quals = plainType.getQualifiers();
auto lquals = plainType.getLocalQualifiers();
if(quals.hasConst() or lquals.hasConst()) {
ptr += "c";
}
plainType.removeLocalConst();
}
if(t.isCanonical()) {
t = t.getCanonicalType();
}
if(plainType->isBuiltinType() and plainType->hasUnsignedIntegerRepresentation()) {
std::string tmp{GetName(plainType)};
ReplaceAll(tmp, "unsigned ", "u");
name += tmp;
} else {
name += GetName(plainType);
}
auto quals = t.getQualifiers();
auto lquals = t.getLocalQualifiers();
if(t->isPointerType()) {
name += ptr;
}
if(quals.hasConst() or lquals.hasConst()) {
name += "c";
}
if(t->isLValueReferenceType()) {
name += "r";
}
if(t->isRValueReferenceType()) {
name += "R";
}
}
}
} else if(const auto* md = dyn_cast_or_null<CXXMethodDecl>(fd);
md and GetInsightsOptions().UseShow2C and md->isVirtual()) {
name = GetName(*md->getParent());
}
return name;
}
//-----------------------------------------------------------------------------
STRONG_BOOL(UseLexicalParent);
//-----------------------------------------------------------------------------
static bool NeedsNamespace(const Decl& decl, UseLexicalParent useLexicalParent)
{
const auto* declCtx = decl.getDeclContext();
if(UseLexicalParent::Yes == useLexicalParent) {
declCtx = declCtx->getLexicalParent();
}