Check for thread interruption in Parser::parse (#4302)

Since this method might be expensive, checking for interruption is a way
to allow expensive tasks to be aborted.

Author: fedejeanne

org.eclipse.jdt.core.compiler.batch/src/org/eclipse/jdt/internal/compiler/parser/Parser.java

@@ -11605,6 +11605,11 @@ protected void parse() {
 try {
 	this.scanner.setActiveParser(this);
 	ProcessTerminals : for (;;) {
+		if (Thread.currentThread().isInterrupted()) {
+            Thread.currentThread().interrupt();
+            throw new RuntimeException("[" + Thread.currentThread().getName() + "] Task interrupted", new InterruptedException()); //$NON-NLS-1$ //$NON-NLS-2$
+        }
+
 		int stackLength = this.stack.length;
 		if (++this.stateStackTop >= stackLength) {
 			System.arraycopy(