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test/langtools/tools/javac/parser/JavacParserTest.java
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rev 51104 : imported patch switch
@@ -80,10 +80,13 @@
import javax.tools.JavaFileManager;
import javax.tools.JavaFileObject;
import javax.tools.SimpleJavaFileObject;
import javax.tools.ToolProvider;
+import com.sun.source.tree.CaseTree;
+import com.sun.source.util.TreePathScanner;
+
public class JavacParserTest extends TestCase {
static final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
static final JavaFileManager fm = tool.getStandardFileManager(null, null, null);
private JavacParserTest(){}
@@ -1037,10 +1040,139 @@
String actualErrors = normalize(out.toString());
assertEquals("the error message is not correct, actual: " + actualErrors, expectedErrors, actualErrors);
}
@Test
+ void testCaseBodyStatements() throws IOException {
+ String code = "class C {" +
+ " void t(int i) {" +
+ " switch (i) {" +
+ " case 0 -> i++;" +
+ " case 1 -> { i++; }" +
+ " case 2 -> throw new RuntimeException();" +
+ " case 3 -> if (true) ;" +
+ " default -> i++;" +
+ " }" +
+ " switch (i) {" +
+ " case 0: i++; break;" +
+ " case 1: { i++; break;}" +
+ " case 2: throw new RuntimeException();" +
+ " case 3: if (true) ; break;" +
+ " default: i++; break;" +
+ " }" +
+ " int j = switch (i) {" +
+ " case 0 -> i + 1;" +
+ " case 1 -> { break i + 1; }" +
+ " default -> throw new RuntimeException();" +
+ " };" +
+ " int k = switch (i) {" +
+ " case 0: break i + 1;" +
+ " case 1: { break i + 1; }" +
+ " default: throw new RuntimeException();" +
+ " };" +
+ " }" +
+ "}";
+ String expectedErrors = "Test.java:1:178: compiler.err.switch.case.unexpected.statement\n";
+ StringWriter out = new StringWriter();
+ JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(out, fm, null,
+ Arrays.asList("-XDrawDiagnostics", "--enable-preview", "-source", "12"),
+ null, Arrays.asList(new MyFileObject(code)));
+
+ CompilationUnitTree cut = ct.parse().iterator().next();
+ Trees trees = Trees.instance(ct);
+ List<String> spans = new ArrayList<>();
+
+ new TreePathScanner<Void, Void>() {
+ @Override
+ public Void visitCase(CaseTree tree, Void v) {
+ if (tree.getBody() != null) {
+ int start = (int) trees.getSourcePositions().getStartPosition(cut, tree.getBody());
+ int end = (int) trees.getSourcePositions().getEndPosition(cut, tree.getBody());
+ spans.add(code.substring(start, end));
+ } else {
+ spans.add("<null>");
+ }
+ return super.visitCase(tree, v);
+ }
+ }.scan(cut, null);
+
+ List<String> expectedSpans = List.of(
+ "i++;", "{ i++; }", "throw new RuntimeException();", "if (true) ;", "i++;",
+ "<null>", "<null>", "<null>", "<null>", "<null>",
+ "i + 1"/*TODO semicolon?*/, "{ break i + 1; }", "throw new RuntimeException();",
+ "<null>", "<null>", "<null>");
+ assertEquals("the error spans are not correct; actual:" + spans, expectedSpans, spans);
+ String toString = cut.toString();
+ String expectedToString =
+ "\n" +
+ "class C {\n" +
+ " \n" +
+ " void t(int i) {\n" +
+ " switch (i) {\n" +
+ " case 0 -> i++;\n" +
+ " case 1 -> {\n" +
+ " i++;\n" +
+ " }\n" +
+ " case 2 -> throw new RuntimeException();\n" +
+ " case 3 -> if (true) ;\n" +
+ " default -> i++;\n" +
+ " }\n" +
+ " switch (i) {\n" +
+ " case 0:\n" +
+ " i++;\n" +
+ " break;\n" +
+ " \n" +
+ " case 1:\n" +
+ " {\n" +
+ " i++;\n" +
+ " break;\n" +
+ " }\n" +
+ " \n" +
+ " case 2:\n" +
+ " throw new RuntimeException();\n" +
+ " \n" +
+ " case 3:\n" +
+ " if (true) ;\n" +
+ " break;\n" +
+ " \n" +
+ " default:\n" +
+ " i++;\n" +
+ " break;\n" +
+ " \n" +
+ " }\n" +
+ " int j = switch (i) {\n" +
+ " case 0 -> break i + 1;\n" +
+ " case 1 -> {\n" +
+ " break i + 1;\n" +
+ " }\n" +
+ " default -> throw new RuntimeException();\n" +
+ " };\n" +
+ " int k = switch (i) {\n" +
+ " case 0:\n" +
+ " break i + 1;\n" +
+ " \n" +
+ " case 1:\n" +
+ " {\n" +
+ " break i + 1;\n" +
+ " }\n" +
+ " \n" +
+ " default:\n" +
+ " throw new RuntimeException();\n" +
+ " \n" +
+ " };\n" +
+ " }\n" +
+ "}";
+ System.err.println("toString:");
+ System.err.println(toString);
+ System.err.println("expectedToString:");
+ System.err.println(expectedToString);
+ assertEquals("the error spans are not correct; actual:" + toString, expectedToString, toString);
+ String actualErrors = normalize(out.toString());
+ assertEquals("the error message is not correct, actual: " + actualErrors, expectedErrors, actualErrors);
+ }
+
+ @Test
void testTypeParamsWithoutMethod() throws IOException {
assert tool != null;
String code = "package test; class Test { /**javadoc*/ |public <T> |}";
String[] parts = code.split("\\|");
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