71 lines
2.4 KiB
C#
71 lines
2.4 KiB
C#
/*
|
|
* dbMango
|
|
*
|
|
* Copyright 2025 Deutsche Bank AG
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* 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
|
|
*
|
|
* http://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.
|
|
*/
|
|
using Antlr4.Runtime;
|
|
using Antlr4.Runtime.Tree;
|
|
|
|
namespace Rms.Risk.Mango.Language;
|
|
|
|
public static class LanguageParser
|
|
{
|
|
public static AstAggregation ParseScriptToAST(string input)
|
|
{
|
|
var str = new AntlrInputStream(input);
|
|
var lexer = new MongoAggregationForHumansLexer(str);
|
|
var tokens = new CommonTokenStream(lexer);
|
|
var parser = new MongoAggregationForHumansParser(tokens);
|
|
|
|
parser.AddErrorListener(new ErrorListener<IToken>("parser"));
|
|
lexer.AddErrorListener(new ErrorListener<int>("lexer"));
|
|
|
|
var tree = parser.file();
|
|
|
|
var astListener = new MongoGrammarListener();
|
|
var walker = new ParseTreeWalker();
|
|
|
|
walker.Walk(astListener, tree);
|
|
|
|
return astListener.Aggregate ?? throw new ("No Aggregation parsed");
|
|
}
|
|
|
|
public static AstAggregation ParseAggregationJsonToAST(string collection, string json)
|
|
=> AggregationPipelineParser.Parse(collection, json);
|
|
|
|
public static AstAggregation ParseAggregationJsonToAST(string collection, JsonArray json)
|
|
=> AggregationPipelineParser.Parse(collection, json);
|
|
|
|
public static void ParseJsonForFun(string input)
|
|
{
|
|
var str = new AntlrInputStream(input);
|
|
var lexer = new JsonGrammarLexer(str);
|
|
var tokens = new CommonTokenStream(lexer);
|
|
var parser = new JsonGrammarParser(tokens);
|
|
|
|
parser.AddErrorListener(new ErrorListener<IToken>("parser"));
|
|
lexer.AddErrorListener(new ErrorListener<int>("lexer"));
|
|
|
|
var tree = parser.json();
|
|
|
|
var astListener = new JsonGrammarBaseListener();
|
|
var walker = new ParseTreeWalker();
|
|
|
|
walker.Walk(astListener, tree);
|
|
}
|
|
|
|
}
|