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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "symbol_table.h"
#include <vespa/vespalib/stllike/hash_map.hpp>
namespace vespalib::slime {
SymbolTable::SymbolTable(size_t expectedNumSymbols)
: _stash(),
_symbols(3*expectedNumSymbols),
_names()
{
_names.reserve(expectedNumSymbols);
}
SymbolTable::~SymbolTable() = default;
void
SymbolTable::clear() {
_names.clear();
_symbols.clear();
_stash.clear();
}
Symbol
SymbolTable::insert(const Memory &name) {
SymbolMap::const_iterator pos = _symbols.find(name);
if (pos == _symbols.end()) {
Symbol symbol(_names.size());
char *buf = _stash.alloc(name.size);
memcpy(buf, name.data, name.size);
Memory backed(buf, name.size);
_names.push_back(backed);
_symbols.insert(std::make_pair(backed, symbol));
return symbol;
}
return pos->second;
}
Symbol
SymbolTable::lookup(const Memory &name) const {
SymbolMap::const_iterator pos = _symbols.find(name);
if (pos == _symbols.end()) {
return {};
}
return pos->second;
}
}
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