forked from cel-expr/cel-cpp
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathconst_value_step.cc
More file actions
96 lines (81 loc) · 2.87 KB
/
Copy pathconst_value_step.cc
File metadata and controls
96 lines (81 loc) · 2.87 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
#include "eval/eval/const_value_step.h"
#include "google/protobuf/duration.pb.h"
#include "google/protobuf/timestamp.pb.h"
#include "absl/status/statusor.h"
#include "eval/eval/expression_step_base.h"
#include "eval/public/structs/cel_proto_wrapper.h"
namespace google {
namespace api {
namespace expr {
namespace runtime {
using google::api::expr::v1alpha1::Constant;
using google::api::expr::v1alpha1::Expr;
namespace {
class ConstValueStep : public ExpressionStepBase {
public:
ConstValueStep(const CelValue& value, int64_t expr_id, bool comes_from_ast)
: ExpressionStepBase(expr_id, comes_from_ast), value_(value) {}
absl::Status Evaluate(ExecutionFrame* frame) const override;
private:
CelValue value_;
};
absl::Status ConstValueStep::Evaluate(ExecutionFrame* frame) const {
frame->value_stack().Push(value_);
return absl::OkStatus();
}
} // namespace
absl::optional<CelValue> ConvertConstant(const Constant* const_expr) {
CelValue value = CelValue::CreateNull();
switch (const_expr->constant_kind_case()) {
case Constant::kNullValue:
value = CelValue::CreateNull();
break;
case Constant::kBoolValue:
value = CelValue::CreateBool(const_expr->bool_value());
break;
case Constant::kInt64Value:
value = CelValue::CreateInt64(const_expr->int64_value());
break;
case Constant::kUint64Value:
value = CelValue::CreateUint64(const_expr->uint64_value());
break;
case Constant::kDoubleValue:
value = CelValue::CreateDouble(const_expr->double_value());
break;
case Constant::kStringValue:
value = CelValue::CreateString(&const_expr->string_value());
break;
case Constant::kBytesValue:
value = CelValue::CreateBytes(&const_expr->bytes_value());
break;
case Constant::kDurationValue:
value = CelProtoWrapper::CreateDuration(&const_expr->duration_value());
break;
case Constant::kTimestampValue:
value = CelProtoWrapper::CreateTimestamp(&const_expr->timestamp_value());
break;
default:
// constant with no kind specified
return {};
break;
}
return value;
}
absl::StatusOr<std::unique_ptr<ExpressionStep>> CreateConstValueStep(
CelValue value, int64_t expr_id, bool comes_from_ast) {
std::unique_ptr<ExpressionStep> step =
absl::make_unique<ConstValueStep>(value, expr_id, comes_from_ast);
return std::move(step);
}
// Factory method for Constant(Enum value) - based Execution step
absl::StatusOr<std::unique_ptr<ExpressionStep>> CreateConstValueStep(
const google::protobuf::EnumValueDescriptor* value_descriptor, int64_t expr_id) {
CelValue value = CelValue::CreateInt64(value_descriptor->number());
std::unique_ptr<ExpressionStep> step =
absl::make_unique<ConstValueStep>(value, expr_id, false);
return std::move(step);
}
} // namespace runtime
} // namespace expr
} // namespace api
} // namespace google