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// Copyright 2022 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.
package dev.cel.parser;
import dev.cel.common.CelOptions;
import dev.cel.common.CelSource;
import dev.cel.common.CelValidationResult;
/**
* Parses a CEL expression and returns an abstract syntax tree.
*
* <p>Dispatches to {@link AntlrParser} or {@link PrattParser} based on {@link
* CelOptions#enablePrattParser()}.
*/
final class Parser {
static CelValidationResult parse(CelParserImpl parser, CelSource source, CelOptions options) {
if (options.enablePrattParser()) {
return PrattParser.parse(source, options, parser.getMacros());
}
return AntlrParser.parse(source, options, parser.getMacros().values());
}
private Parser() {}
}