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248 lines (192 loc) · 4.75 KB
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//
// Namespace.cpp
//
// $Id: //poco/1.4/CppParser/src/NameSpace.cpp#1 $
//
// Library: CppParser
// Package: SymbolTable
// Module: Namespace
//
// Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#include "Poco/CppParser/NameSpace.h"
#include "Poco/Exception.h"
#include <sstream>
#include <cstddef>
using Poco::ExistsException;
using Poco::NotFoundException;
namespace Poco {
namespace CppParser {
NameSpace::NameSpace()
{
}
NameSpace::NameSpace(const std::string& name, NameSpace* pNameSpace):
Symbol(name, pNameSpace)
{
}
NameSpace::~NameSpace()
{
for (SymbolTable::iterator it = _symbols.begin(); it != _symbols.end(); ++it)
{
delete it->second;
}
}
void NameSpace::addSymbol(Symbol* pSymbol)
{
poco_check_ptr (pSymbol);
_symbols.insert(SymbolTable::value_type(pSymbol->name(), pSymbol));
}
void NameSpace::importSymbol(const std::string& fullName)
{
std::string localName;
std::string::size_type pos = fullName.find_last_of(':');
if (pos != std::string::npos && pos < fullName.size() - 1)
{
localName.assign(fullName, pos + 1, fullName.size() - pos - 1);
_importedSymbols[localName] = fullName;
}
}
void NameSpace::importNameSpace(const std::string& nameSpace)
{
_importedNameSpaces.push_back(nameSpace);
}
NameSpace::Iterator NameSpace::begin() const
{
return _symbols.begin();
}
NameSpace::Iterator NameSpace::end() const
{
return _symbols.end();
}
Symbol* NameSpace::lookup(const std::string& name) const
{
std::set<const NameSpace*> alreadyVisited;
return lookup(name, alreadyVisited);
}
Symbol* NameSpace::lookup(const std::string& name, std::set<const NameSpace*>& alreadyVisited) const
{
Symbol* pSymbol = 0;
if (name.empty())
return pSymbol;
if (alreadyVisited.find(this) != alreadyVisited.end())
return pSymbol;
std::string head;
std::string tail;
splitName(name, head, tail);
alreadyVisited.insert(this);
bool currentNSInserted = true;
if (head.empty())
{
alreadyVisited.insert(this);
return root()->lookup(tail, alreadyVisited);
}
SymbolTable::const_iterator it = _symbols.find(head);
if (it != _symbols.end())
{
pSymbol = it->second;
if (!tail.empty())
{
alreadyVisited.insert(this);
NameSpace* pNS = dynamic_cast<NameSpace*>(pSymbol);
if (pNS)
pSymbol = static_cast<NameSpace*>(pSymbol)->lookup(tail, alreadyVisited);
else
pSymbol = 0;
}
}
else if (tail.empty())
{
AliasMap::const_iterator itAlias = _importedSymbols.find(head);
if (itAlias != _importedSymbols.end())
pSymbol = lookup(itAlias->second, alreadyVisited);
else
{
for (NameSpaceVec::const_iterator it = _importedNameSpaces.begin(); !pSymbol && it != _importedNameSpaces.end(); ++it)
{
Symbol* pNS = lookup(*it, alreadyVisited);
if (pNS && pNS->kind() == Symbol::SYM_NAMESPACE)
{
pSymbol = static_cast<NameSpace*>(pNS)->lookup(name, alreadyVisited);
}
}
}
}
NameSpace* pNS = nameSpace();
if (!pSymbol && pNS && (alreadyVisited.find(pNS) == alreadyVisited.end()))
{
// if we have to go up, never push the NS!
if (currentNSInserted)
alreadyVisited.erase(this);
pSymbol = nameSpace()->lookup(name, alreadyVisited);
}
return pSymbol;
}
void NameSpace::nameSpaces(SymbolTable& table) const
{
extract(Symbol::SYM_NAMESPACE, table);
}
void NameSpace::typeDefs(SymbolTable& table) const
{
extract(Symbol::SYM_TYPEDEF, table);
}
void NameSpace::enums(SymbolTable& table) const
{
extract(Symbol::SYM_ENUM, table);
}
void NameSpace::classes(SymbolTable& table) const
{
extract(Symbol::SYM_STRUCT, table);
}
void NameSpace::functions(SymbolTable& table) const
{
extract(Symbol::SYM_FUNCTION, table);
}
void NameSpace::variables(SymbolTable& table) const
{
extract(Symbol::SYM_VARIABLE, table);
}
Symbol::Kind NameSpace::kind() const
{
return Symbol::SYM_NAMESPACE;
}
std::string NameSpace::toString() const
{
std::ostringstream ostr;
ostr << "namespace " << name() << "\n{\n";
for (Iterator it = begin(); it != end(); ++it)
{
ostr << it->second->fullName() << "\n";
ostr << it->second->toString() << "\n";
}
ostr << "}\n";
return ostr.str();
}
void NameSpace::splitName(const std::string& name, std::string& head, std::string& tail)
{
std::string::size_type pos = name.find(':');
if (pos != std::string::npos)
{
head.assign(name, 0, pos);
pos += 2;
poco_assert (pos < name.length());
tail.assign(name, pos, name.length() - pos);
}
else head = name;
}
NameSpace* NameSpace::root()
{
static NameSpace root;
return &root;
}
void NameSpace::extract(Symbol::Kind kind, SymbolTable& table) const
{
for (SymbolTable::const_iterator it = _symbols.begin(); it != _symbols.end(); ++it)
{
if (it->second->kind() == kind)
table.insert(*it);
}
}
} } // namespace Poco::CppParser