/*
***************************************************************************************
* Copyright (C) 2006 EsperTech, Inc. All rights reserved. *
* http://www.espertech.com/esper *
* http://www.espertech.com *
* ---------------------------------------------------------------------------------- *
* The software in this package is published under the terms of the GPL license *
* a copy of which has been included with this distribution in the license.txt file. *
***************************************************************************************
*/
package com.espertech.esper.epl.parse;
import com.espertech.esper.client.scopetest.EPAssertionUtil;
import com.espertech.esper.collection.Pair;
import com.espertech.esper.epl.generated.EsperEPL2GrammarParser;
import com.espertech.esper.supportunit.epl.parse.SupportParserHelper;
import junit.framework.TestCase;
import org.antlr.v4.runtime.CommonTokenStream;
import org.antlr.v4.runtime.tree.Tree;
import java.util.List;
import java.util.Map;
public class TestJsonParser extends TestCase {
public void testParse() throws Exception {
Object result;
assertEquals("abc", parseLoadJson("\"abc\""));
assertEquals("http://www.uri.com", parseLoadJson("\"http://www.uri.com\""));
assertEquals("new\nline", parseLoadJson("\"new\\nline\""));
assertEquals(" ~ ", parseLoadJson("\" \\u007E \""));
assertEquals("/", parseLoadJson("\"\\/\""));
assertEquals(Boolean.TRUE, parseLoadJson("true"));
assertEquals(false, parseLoadJson("false"));
assertEquals(null, parseLoadJson("null"));
assertEquals(10, parseLoadJson("10"));
assertEquals(-10, parseLoadJson("-10"));
assertEquals(20L, parseLoadJson("20L"));
assertEquals(5.5d, parseLoadJson("5.5"));
result = parseLoadJson("{\"name\":\"myname\",\"value\":5}");
EPAssertionUtil.assertPropsMap((Map) result, "name,value".split(","), "myname", 5);
result = parseLoadJson("{name:\"myname\",value:5}");
EPAssertionUtil.assertPropsMap((Map) result, "name,value".split(","), "myname", 5);
result = parseLoadJson("[\"one\",2]");
EPAssertionUtil.assertEqualsExactOrder(new Object[]{"one", 2}, (List) result);
result = parseLoadJson("{\"one\": { 'a' : 2 } }");
Map inner = (Map) ((Map) result).get("one");
assertEquals(1, inner.size());
String json = "{\n" +
" \"glossary\": {\n" +
" \"title\": \"example glossary\",\n" +
"\t\t\"GlossDiv\": {\n" +
" \"title\": \"S\",\n" +
"\t\t\t\"GlossList\": {\n" +
" \"GlossEntry\": {\n" +
" \"ID\": \"SGML\",\n" +
"\t\t\t\t\t\"SortAs\": \"SGML\",\n" +
"\t\t\t\t\t\"GlossTerm\": \"Standard Generalized Markup Language\",\n" +
"\t\t\t\t\t\"Acronym\": \"SGML\",\n" +
"\t\t\t\t\t\"Abbrev\": \"ISO 8879:1986\",\n" +
"\t\t\t\t\t\"GlossDef\": {\n" +
" \"para\": \"A meta-markup language, used to create markup languages such as DocBook.\",\n" +
"\t\t\t\t\t\t\"GlossSeeAlso\": [\"GML\", \"XML\"]\n" +
" },\n" +
"\t\t\t\t\t\"GlossSee\": \"markup\"\n" +
" }\n" +
" }\n" +
" }\n" +
" }\n" +
"}";
Tree tree = parseJson(json).getFirst();
ASTUtil.dumpAST(tree);
Object loaded = parseLoadJson(json);
assertEquals("{glossary={title=example glossary, GlossDiv={title=S, GlossList={GlossEntry={ID=SGML, SortAs=SGML, GlossTerm=Standard Generalized Markup Language, Acronym=SGML, Abbrev=ISO 8879:1986, GlossDef={para=A meta-markup language, used to create markup languages such as DocBook., GlossSeeAlso=[GML, XML]}, GlossSee=markup}}}}}", loaded.toString());
}
private Object parseLoadJson(String expression) throws Exception {
Pair<Tree, CommonTokenStream> parsed = parseJson(expression);
EsperEPL2GrammarParser.StartJsonValueRuleContext tree = (EsperEPL2GrammarParser.StartJsonValueRuleContext) parsed.getFirst();
assertEquals(EsperEPL2GrammarParser.RULE_startJsonValueRule, ASTUtil.getRuleIndexIfProvided(tree));
Tree root = tree.getChild(0);
ASTUtil.dumpAST(root);
return ASTJsonHelper.walk(parsed.getSecond(), tree.jsonvalue());
}
private Pair<Tree, CommonTokenStream> parseJson(String expression) throws Exception {
return SupportParserHelper.parseJson(expression);
}
}