V8 API Reference, 7.2.502.16 (for Deno 0.2.4)
signature-map.cc
1 // Copyright 2016 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #include "src/wasm/signature-map.h"
6 
7 #include "src/signature.h"
8 
9 namespace v8 {
10 namespace internal {
11 namespace wasm {
12 
13 uint32_t SignatureMap::FindOrInsert(const FunctionSig& sig) {
14  CHECK(!frozen_);
15  auto pos = map_.find(sig);
16  if (pos != map_.end()) return pos->second;
17  // Indexes are returned as int32_t, thus check against their limit.
18  CHECK_GE(kMaxInt, map_.size());
19  uint32_t index = static_cast<uint32_t>(map_.size());
20  map_.insert(std::make_pair(sig, index));
21  return index;
22 }
23 
24 int32_t SignatureMap::Find(const FunctionSig& sig) const {
25  auto pos = map_.find(sig);
26  if (pos == map_.end()) return -1;
27  return static_cast<int32_t>(pos->second);
28 }
29 
30 } // namespace wasm
31 } // namespace internal
32 } // namespace v8
Definition: libplatform.h:13