Merge pull request #3077 from antlr/fix-javascript-intervalset

Fix javascript intervalset, fix #3075

runtime-testsuite/test/org/antlr/v4/test/runtime/BaseRuntimeTestSupport.java

@@ -14,11 +14,14 @@ import org.junit.rules.TestWatcher;
 import org.junit.runner.Description;
 
 import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
 import java.util.Locale;
 import java.util.logging.Logger;
 
 import static org.junit.Assert.assertEquals;
 
+@SuppressWarnings("ResultOfMethodCallIgnored")
 public abstract class BaseRuntimeTestSupport implements RuntimeTestSupport {
 
 	// -J-Dorg.antlr.v4.test.BaseTest.level=FINE
@@ -102,8 +105,7 @@ public abstract class BaseRuntimeTestSupport implements RuntimeTestSupport {
 		String prop = System.getProperty(propName);
 		if(prop!=null && prop.length()>0) {
 			tempTestDir = new File(prop);
-		}
-		else {
+		} else {
 			String dirName = getClass().getSimpleName() +  "-" + Thread.currentThread().getName() + "-" + System.currentTimeMillis();
 			tempTestDir = new File(System.getProperty("java.io.tmpdir"), dirName);
 		}
@@ -149,26 +151,36 @@ public abstract class BaseRuntimeTestSupport implements RuntimeTestSupport {
 	public static void eraseFilesInDir(File dir) {
 		String[] files = dir.list();
 		for(int i = 0; files!=null && i < files.length; i++) {
-			File file = new File(dir,files[i]);
-			if(file.isDirectory())
-				eraseDirectory(file);
-			else
-				file.delete();
+			try {
+				eraseFile(dir, files[i]);
+			} catch(IOException e) {
+				logger.info(e.getMessage());
+			}
 		}
 	}
 
+	private static void eraseFile(File dir, String name) throws IOException {
+		File file = new File(dir,name);
+		if(Files.isSymbolicLink(file.toPath()))
+			Files.delete(file.toPath());
+		else if(file.isDirectory())
+			eraseDirectory(file);
+		else
+			file.delete();
+	}
+
 	private static String detectedOS;
 
 	public static String getOS() {
 		if (detectedOS == null) {
 			String os = System.getProperty("os.name", "generic").toLowerCase(Locale.ENGLISH);
-			if ((os.indexOf("mac") >= 0) || (os.indexOf("darwin") >= 0)) {
+			if (os.contains("mac") || os.contains("darwin")) {
 				detectedOS = "mac";
 			}
-			else if (os.indexOf("win") >= 0) {
+			else if (os.contains("win")) {
 				detectedOS = "windows";
 			}
-			else if (os.indexOf("nux") >= 0) {
+			else if (os.contains("nux")) {
 				detectedOS = "linux";
 			}
 			else {

runtime/JavaScript/package.json

@@ -20,9 +20,10 @@
     "@babel/core": "^7.12.9",
     "@babel/preset-env": "^7.12.7",
     "babel-loader": "^8.2.1",
+    "ini": "1.3.6",
+    "jest": "^26.6.3",
     "webpack": "^4.44.2",
-    "webpack-cli": "^3.3.12",
-    "ini": "1.3.6"
+    "webpack-cli": "^3.3.12"
   },
   "scripts": {
     "build": "webpack"

runtime/JavaScript/src/antlr4/IntervalSet.js

@@ -94,7 +94,7 @@ class IntervalSet {
 
 	reduce(k) {
 		// only need to reduce if k is not the last
-		if (k < this.intervalslength - 1) {
+		if (k < this.intervals.length - 1) {
 			const l = this.intervals[k];
 			const r = this.intervals[k + 1];
 			// if r contained in l
@@ -103,7 +103,7 @@ class IntervalSet {
 				this.reduce(k);
 			} else if (l.stop >= r.start) {
 				this.intervals[k] = new Interval(l.start, r.stop);
-				this.intervals = this.intervals.splice(k + 1, 1);
+				this.intervals.splice(k + 1, 1);
 			}
 		}
 	}

runtime/JavaScript/src/test/TestIntervalSet.test.js

@@ -0,0 +1,29 @@
+import antlr4 from "../antlr4/index.js";
+
+it("merges interval sets properly", () => {
+
+    const s1 = new antlr4.IntervalSet();
+    s1.addOne(10);
+    expect(s1.toString()).toEqual("10");
+    const s2 = new antlr4.IntervalSet();
+    s2.addOne(12);
+    expect(s2.toString()).toEqual("12");
+    const merged = new antlr4.IntervalSet();
+    merged.addSet(s1);
+    expect(merged.toString()).toEqual("10");
+    merged.addSet(s2);
+    expect(merged.toString()).toEqual("{10, 12}");
+    let s3 = new antlr4.IntervalSet();
+    s3.addOne(10);
+    merged.addSet(s3);
+    expect(merged.toString()).toEqual("{10, 12}");
+    s3 = new antlr4.IntervalSet();
+    s3.addOne(11);
+    merged.addSet(s3);
+    expect(merged.toString()).toEqual("10..12");
+    s3 = new antlr4.IntervalSet();
+    s3.addOne(12);
+    merged.addSet(s3);
+    expect(merged.toString()).toEqual("10..12");
+
+});

runtime/JavaScript/webpack.config.js

@@ -25,4 +25,4 @@ module.exports = {
             }
         }]
     }
-}
+};