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1// Copyright (c) Facebook, Inc. and its affiliates. (http://www.facebook.com)
2#include "symbols.h"
3
4#include "runtime.h"
5#include "visitor.h"
6
7namespace py {
8
9// clang-format off
10static const char* kPredefinedSymbols[] = {
11#define DEFINE_SYMBOL(symbol) #symbol,
12 FOREACH_SYMBOL(DEFINE_SYMBOL)
13#undef DEFINE_SYMBOL
14};
15// clang-format on
16
17Symbols::Symbols(Runtime* runtime) {
18 auto num_symbols = static_cast<uword>(SymbolId::kMaxId);
19 uword symbol_size = sizeof(*symbols_);
20 symbols_ = static_cast<RawObject*>(std::calloc(num_symbols, symbol_size));
21 CHECK(symbols_ != nullptr, "could not allocate memory for symbol table");
22 for (uword i = 0; i < num_symbols; i++) {
23 symbols_[i] = runtime->newStrFromCStr(kPredefinedSymbols[i]);
24 }
25}
26
27Symbols::~Symbols() { std::free(symbols_); }
28
29void Symbols::visit(PointerVisitor* visitor) {
30 for (word i = 0; i < static_cast<int>(SymbolId::kMaxId); i++) {
31 visitor->visitPointer(&symbols_[i], PointerKind::kRuntime);
32 }
33}
34
35const char* Symbols::predefinedSymbolAt(SymbolId id) {
36 int index = static_cast<int>(id);
37 DCHECK_INDEX(index, static_cast<int>(SymbolId::kMaxId));
38 return kPredefinedSymbols[index];
39}
40
41} // namespace py