feat: output decompilation results in json format (#676)

jadx-core/src/test/java/jadx/tests/integration/others/TestJsonOutput.java

@@ -0,0 +1,62 @@
+package jadx.tests.integration.others;
+
+import java.util.List;
+
+import org.junit.jupiter.api.Test;
+
+import jadx.api.JadxArgs;
+import jadx.core.dex.nodes.ClassNode;
+import jadx.tests.api.IntegrationTest;
+
+import static jadx.tests.api.utils.JadxMatchers.containsOne;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.containsString;
+
+public class TestJsonOutput extends IntegrationTest {
+
+	public static class TestCls {
+		private final String prefix = "list: ";
+
+		static {
+			System.out.println("test");
+		}
+
+		public void test(boolean b, List<String> list) {
+			if (b) {
+				System.out.println(prefix + list);
+			}
+		}
+
+		public static class Inner implements Runnable {
+			@Override
+			public void run() {
+				System.out.println("run");
+			}
+		}
+	}
+
+	@Test
+	public void test() {
+		disableCompilation();
+		args.setOutputFormat(JadxArgs.OutputFormatEnum.JSON);
+
+		ClassNode cls = getClassNode(TestCls.class);
+		String code = cls.getCode().toString();
+
+		assertThat(code, containsString("\"offset\": \"0x"));
+		assertThat(code, containsOne("public static class Inner implements Runnable"));
+	}
+
+	@Test
+	public void testFallback() {
+		disableCompilation();
+		setFallback();
+		args.setOutputFormat(JadxArgs.OutputFormatEnum.JSON);
+
+		ClassNode cls = getClassNode(TestCls.class);
+		String code = cls.getCode().toString();
+
+		assertThat(code, containsString("\"offset\": \"0x"));
+		assertThat(code, containsOne("public static class Inner implements java.lang.Runnable"));
+	}
+}