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/*
SPDX-FileCopyrightText: 2008 David Nolden <david.nolden.kdevelop@art-master.de>
SPDX-License-Identifier: LGPL-2.0-only
*/
#include "declarationid.h"
#include "ducontext.h"
#include "topducontext.h"
#include "duchain.h"
#include "declaration.h"
#include "persistentsymboltable.h"
#include "instantiationinformation.h"
#include <util/convenientfreelist.h>
namespace KDevelop {
DeclarationId::DeclarationId(const IndexedQualifiedIdentifier& id, uint additionalId,
const IndexedInstantiationInformation& specialization)
: m_indirectData{id, additionalId}
, m_isDirect(false)
, m_specialization(specialization)
{
}
DeclarationId::DeclarationId(const IndexedDeclaration& decl,
const IndexedInstantiationInformation& specialization)
: m_directData(decl)
, m_isDirect(true)
, m_specialization(specialization)
{
}
DeclarationId::DeclarationId(const DeclarationId& rhs)
: m_isDirect(rhs.m_isDirect)
, m_specialization(rhs.m_specialization)
{
if (!m_isDirect) {
// IndexedQualifiedIdentifier doesn't like zero-initialization...
new (&m_indirectData.identifier) IndexedQualifiedIdentifier(rhs.m_indirectData.identifier);
m_indirectData.additionalIdentity = rhs.m_indirectData.additionalIdentity;
} else {
m_directData = rhs.m_directData;
}
}
DeclarationId::~DeclarationId()
{
if (!m_isDirect) {
m_indirectData.~Indirect();
}
}
DeclarationId& DeclarationId::operator=(const DeclarationId& rhs)
{
if (&rhs == this)
return *this;
m_isDirect = rhs.m_isDirect;
m_specialization = rhs.m_specialization;
if (!m_isDirect) {
m_indirectData = rhs.m_indirectData;
} else {
m_directData = rhs.m_directData;
}
return *this;
}
bool DeclarationId::isDirect() const
{
return m_isDirect;
}
void DeclarationId::setSpecialization(const IndexedInstantiationInformation& spec)
{
m_specialization = spec;
}
IndexedInstantiationInformation DeclarationId::specialization() const
{
return m_specialization;
}
KDevVarLengthArray<Declaration*> DeclarationId::declarations(const TopDUContext* top) const
{
KDevVarLengthArray<Declaration*> ret;
if (m_isDirect == false) {
//Find the declaration by its qualified identifier and additionalIdentity
const auto& id = m_indirectData.identifier;
auto visitDeclaration = [&](const IndexedDeclaration& indexedDecl) {
auto decl = indexedDecl.data();
if (decl && m_indirectData.additionalIdentity == decl->additionalIdentity()) {
// Hit
ret.append(decl);
}
return PersistentSymbolTable::VisitorState::Continue;
};
if (top) {
//Do filtering
PersistentSymbolTable::self().visitFilteredDeclarations(id, top->recursiveImportIndices(),
visitDeclaration);
} else {
//Just accept anything
PersistentSymbolTable::self().visitDeclarations(id, [&](const IndexedDeclaration& indexedDecl) {
///@todo think this over once we don't pull in all imported top-context any more
//Don't trigger loading of top-contexts from here, it will create a lot of problems
if (DUChain::self()->isInMemory(indexedDecl.topContextIndex())) {
return visitDeclaration(indexedDecl);
}
return PersistentSymbolTable::VisitorState::Continue;
});
}
} else {
Declaration* decl = m_directData.declaration();
if (decl)
ret.append(decl);
}
if (!ret.isEmpty() && m_specialization.index()) {
KDevVarLengthArray<Declaration*> newRet;
for (Declaration* decl : std::as_const(ret)) {
Declaration* specialized = decl->specialize(m_specialization, top ? top : decl->topContext());
if (specialized)
newRet.append(specialized);
}
return newRet;
}
return ret;
}
Declaration* DeclarationId::declaration(const TopDUContext* top, bool instantiateIfRequired) const
{
Declaration* ret = nullptr;
if (m_isDirect == false) {
//Find the declaration by its qualified identifier and additionalIdentity
const auto& id = m_indirectData.identifier;
auto visitDeclaration = [&](const IndexedDeclaration& indexedDecl) {
auto decl = indexedDecl.data();
if (decl && m_indirectData.additionalIdentity == decl->additionalIdentity()) {
// Hit
ret = decl;
if (!ret->isForwardDeclaration()) {
return PersistentSymbolTable::VisitorState::Break;
}
}
return PersistentSymbolTable::VisitorState::Continue;
};
if (top) {
// Do filtering
PersistentSymbolTable::self().visitFilteredDeclarations(id, top->recursiveImportIndices(),
visitDeclaration);
} else {
//Just accept anything
PersistentSymbolTable::self().visitDeclarations(id, [&](const IndexedDeclaration& indexedDecl) {
///@todo think this over once we don't pull in all imported top-context any more
//Don't trigger loading of top-contexts from here, it will create a lot of problems
if (DUChain::self()->isInMemory(indexedDecl.topContextIndex())) {
return visitDeclaration(indexedDecl);
}
return PersistentSymbolTable::VisitorState::Continue;
});
}
} else {
//Find the declaration by m_topContext and m_declaration
ret = m_directData.declaration();
}
if (ret) {
if (m_specialization.isValid()) {
const TopDUContext* topContextForSpecialization = top;
if (!instantiateIfRequired)
topContextForSpecialization = nullptr; //If we don't want to instantiate new declarations, set the top-context to zero, so specialize(..) will only look-up
else if (!topContextForSpecialization)
topContextForSpecialization = ret->topContext();
return ret->specialize(m_specialization, topContextForSpecialization);
} else {
return ret;
}
} else
return nullptr;
}
QualifiedIdentifier DeclarationId::qualifiedIdentifier() const
{
if (!m_isDirect) {
QualifiedIdentifier baseIdentifier = m_indirectData.identifier.identifier();
if (!m_specialization.index())
return baseIdentifier;
return m_specialization.information().applyToIdentifier(baseIdentifier);
} else {
Declaration* decl = declaration(nullptr);
if (decl)
return decl->qualifiedIdentifier();
return QualifiedIdentifier(i18n("(unknown direct declaration)"));
}
return QualifiedIdentifier(i18n("(missing)")) + m_indirectData.identifier.identifier();
}
}
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