forked from cel-expr/cel-cpp
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathactivation.cc
More file actions
141 lines (125 loc) · 4.3 KB
/
Copy pathactivation.cc
File metadata and controls
141 lines (125 loc) · 4.3 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
// Copyright 2023 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "runtime/activation.h"
#include <memory>
#include <utility>
#include <vector>
#include "absl/base/macros.h"
#include "absl/base/nullability.h"
#include "absl/log/absl_check.h"
#include "absl/status/statusor.h"
#include "absl/strings/string_view.h"
#include "absl/synchronization/mutex.h"
#include "absl/types/optional.h"
#include "common/function_descriptor.h"
#include "common/value.h"
#include "internal/status_macros.h"
#include "runtime/function.h"
#include "runtime/function_overload_reference.h"
#include "google/protobuf/arena.h"
#include "google/protobuf/descriptor.h"
#include "google/protobuf/message.h"
namespace cel {
absl::StatusOr<bool> Activation::FindVariable(
absl::string_view name,
const google::protobuf::DescriptorPool* absl_nonnull descriptor_pool,
google::protobuf::MessageFactory* absl_nonnull message_factory,
google::protobuf::Arena* absl_nonnull arena, Value* absl_nonnull result) const {
ABSL_DCHECK(descriptor_pool != nullptr);
ABSL_DCHECK(message_factory != nullptr);
ABSL_DCHECK(result != nullptr);
auto iter = values_.find(name);
if (iter == values_.end()) {
return false;
}
const ValueEntry& entry = iter->second;
if (entry.provider.has_value()) {
return ProvideValue(name, descriptor_pool, message_factory, arena, result);
}
if (entry.value.has_value()) {
*result = *entry.value;
return true;
}
return false;
}
absl::StatusOr<bool> Activation::ProvideValue(
absl::string_view name,
const google::protobuf::DescriptorPool* absl_nonnull descriptor_pool,
google::protobuf::MessageFactory* absl_nonnull message_factory,
google::protobuf::Arena* absl_nonnull arena, Value* absl_nonnull result) const {
absl::MutexLock lock(mutex_);
auto iter = values_.find(name);
ABSL_ASSERT(iter != values_.end());
ValueEntry& entry = iter->second;
if (entry.value.has_value()) {
*result = *entry.value;
return true;
}
CEL_ASSIGN_OR_RETURN(
auto provided,
(*entry.provider)(name, descriptor_pool, message_factory, arena));
if (provided.has_value()) {
entry.value = std::move(provided);
*result = *entry.value;
return true;
}
return false;
}
std::vector<FunctionOverloadReference> Activation::FindFunctionOverloads(
absl::string_view name) const {
std::vector<FunctionOverloadReference> result;
auto iter = functions_.find(name);
if (iter != functions_.end()) {
const std::vector<FunctionEntry>& overloads = iter->second;
result.reserve(overloads.size());
for (const auto& overload : overloads) {
result.push_back({*overload.descriptor, *overload.implementation});
}
}
return result;
}
bool Activation::InsertOrAssignValue(absl::string_view name, Value value) {
return values_
.insert_or_assign(name, ValueEntry{std::move(value), absl::nullopt})
.second;
}
bool Activation::InsertOrAssignValueProvider(absl::string_view name,
ValueProvider provider) {
return values_
.insert_or_assign(name, ValueEntry{absl::nullopt, std::move(provider)})
.second;
}
bool Activation::InsertFunction(const cel::FunctionDescriptor& descriptor,
std::unique_ptr<cel::Function> impl) {
auto& overloads = functions_[descriptor.name()];
for (auto& overload : overloads) {
if (overload.descriptor->ShapeMatches(descriptor)) {
return false;
}
}
overloads.push_back(
{std::make_unique<FunctionDescriptor>(descriptor), std::move(impl)});
return true;
}
Activation::Activation(Activation&& other) {
using std::swap;
swap(*this, other);
}
Activation& Activation::operator=(Activation&& other) {
using std::swap;
Activation tmp(std::move(other));
swap(*this, tmp);
return *this;
}
} // namespace cel