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// Copyright 2026 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 "validator/validator.h"
#include <cstdint>
#include <string>
#include <utility>
#include "absl/log/absl_check.h"
#include "absl/strings/string_view.h"
#include "checker/type_check_issue.h"
#include "checker/validation_result.h"
#include "common/ast.h"
#include "common/source.h"
namespace cel {
void Validator::AddValidation(Validation validation) {
ABSL_DCHECK(validation);
if (!validation) return;
validations_.push_back(std::move(validation));
}
Validator::ValidationOutput Validator::Validate(const Ast& ast) const {
ValidationOutput result;
ValidationContext context(ast);
for (const auto& validation : validations_) {
if (!validation(context)) {
result.valid = false;
}
}
result.issues = context.ReleaseIssues();
return result;
}
void Validator::UpdateValidationResult(ValidationResult& in) const {
if (!in.IsValid() || in.GetAst() == nullptr) {
// If the result is already decided invalid, just return it.
return;
}
auto result = Validate(*in.GetAst());
if (!result.valid) {
in.ReleaseAst().IgnoreError();
}
for (auto& issue : result.issues) {
in.AddIssue(std::move(issue));
}
}
void ValidationContext::ReportWarningAt(int64_t id, absl::string_view message) {
issues_.push_back(TypeCheckIssue(TypeCheckIssue::Severity::kWarning,
ast_.ComputeSourceLocation(id),
std::string(message)));
}
void ValidationContext::ReportErrorAt(int64_t id, absl::string_view message) {
issues_.push_back(TypeCheckIssue(TypeCheckIssue::Severity::kError,
ast_.ComputeSourceLocation(id),
std::string(message)));
}
void ValidationContext::ReportWarning(absl::string_view message) {
issues_.push_back(TypeCheckIssue(TypeCheckIssue::Severity::kWarning,
SourceLocation{}, std::string(message)));
}
void ValidationContext::ReportError(absl::string_view message) {
issues_.push_back(TypeCheckIssue(TypeCheckIssue::Severity::kError,
SourceLocation{}, std::string(message)));
}
} // namespace cel