V8 API Reference, 7.2.502.16 (for Deno 0.2.4)
operator.cc
1 // Copyright 2014 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/compiler/operator.h"
6 
7 #include <limits>
8 
9 namespace v8 {
10 namespace internal {
11 namespace compiler {
12 
13 namespace {
14 
15 template <typename N>
16 V8_INLINE N CheckRange(size_t val) {
17  // The getters on Operator for input and output counts currently return int.
18  // Thus check that the given value fits in the integer range.
19  // TODO(titzer): Remove this check once the getters return size_t.
20  CHECK_LE(val, std::min(static_cast<size_t>(std::numeric_limits<N>::max()),
21  static_cast<size_t>(kMaxInt)));
22  return static_cast<N>(val);
23 }
24 
25 } // namespace
26 
27 Operator::Operator(Opcode opcode, Properties properties, const char* mnemonic,
28  size_t value_in, size_t effect_in, size_t control_in,
29  size_t value_out, size_t effect_out, size_t control_out)
30  : mnemonic_(mnemonic),
31  opcode_(opcode),
32  properties_(properties),
33  value_in_(CheckRange<uint32_t>(value_in)),
34  effect_in_(CheckRange<uint32_t>(effect_in)),
35  control_in_(CheckRange<uint32_t>(control_in)),
36  value_out_(CheckRange<uint32_t>(value_out)),
37  effect_out_(CheckRange<uint8_t>(effect_out)),
38  control_out_(CheckRange<uint32_t>(control_out)) {}
39 
40 std::ostream& operator<<(std::ostream& os, const Operator& op) {
41  op.PrintTo(os);
42  return os;
43 }
44 
45 void Operator::PrintToImpl(std::ostream& os, PrintVerbosity verbose) const {
46  os << mnemonic();
47 }
48 
49 void Operator::PrintPropsTo(std::ostream& os) const {
50  std::string separator = "";
51 
52 #define PRINT_PROP_IF_SET(name) \
53  if (HasProperty(Operator::k##name)) { \
54  os << separator; \
55  os << #name; \
56  separator = ", "; \
57  }
58  OPERATOR_PROPERTY_LIST(PRINT_PROP_IF_SET)
59 #undef PRINT_PROP_IF_SET
60 }
61 
62 } // namespace compiler
63 } // namespace internal
64 } // namespace v8
Definition: libplatform.h:13