Add syntax testcases from group 1

syntax/all_productions.mj

+/* Complete example using all productions */
+class AllProductions {
+    public int field;
+    public boolean method(int a, String b) throws UsefulException {
+        return b;
+    }
+    
+    public static void main(String[] args) throws SomeException {
+        ;
+        if (true);else;
+        while(false);
+        1==1;
+        {
+            test[12] = 12;
+            true || true;
+            false && false;
+            a == b != c; 
+            a < b <= c > d >= e;
+            a + b - c;
+            a * b / c % d;
+            -a;
+            !b;
+            foo.bar(2, true);
+            int b = foo.a;
+            null;
+            123;
+            test;
+            test();
+            this;
+            (1 + 2); 
+            Test t = new Test();
+            int[][] c = new int[12][];
+        }
+    }
+}   

syntax/array_madness.mj

+/* Syntactial correct expressions using the array syntax. */
+class ArrayMadness {
+    public void[][][][][][][][][][][] voidArray;
+    public voidArray[] voidArrayArray;
+
+    public void method() {
+        voidArray = new voidArray[new voidArray[new voidArray[0][]]][][][][][][][];
+        voidArray[voidArray[voidArray[0]]];
+
+    }
+}

syntax/incomplete_class.invalid.mj

+class IncompleteClass {
+    public static void main(String[] args) {
+        int foo = System.in.read();
+        System.out.println(foo + 25 / 30);
+    }
+    public void Test;
+/* missing } */

syntax/minimal_example.java

+class Test {
+}

syntax/missing_semicolons.invalid.mj

+class MissingSemicolons {
+    public void FOO () {
+        ;
+        if (a[a] == b) true
+        else false
+        ;
+    }
+}

syntax/multiple_main.java

+/* Contains classes with multiple MainMethod */
+class MultipleMainMethods {
+    public static void main(String[] args) {
+    }
+    public static void test(String[] test) {
+    }
+    public static void foo(String[] bar) {
+    }
+}
+class MoreMainMethods {
+    public static void main(String[] args) {
+    }
+    public static void test(String[] test) {
+    }
+    public static void foo(String[] bar) {
+    }
+}

syntax/nested_blocks.java

+/* Deeply nested blocks */
+class DeeplyNestedBlocks {
+    public static void main(String[] args) {
+{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{
+  System.out.println(42);
+}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}
+    }
+}   
+

syntax/nested_classes.invalid.java

+class Outer {
+    class Inner {
+
+    }
+}

syntax/nested_methods.invalid.mj

+class NestedMethods {
+    public void foo() {
+        public String bar() {
+            return new String();
+        }
+    }
+}

syntax/underscore_ident.mj

+/* Use _ as IDENT a lot */
+class _ {
+    public _ _;
+    public static void _ (String[] _) {
+        
+    }
+    public _ _ (_ _, _ _) {
+        ;
+        _;
+        _ _;
+        if (_) _; else _;
+        while (_) _; _._;
+        _._(_[_], _);
+        (_);
+        !_||_&&_<_>_+_-_;
+    }
+}

syntax/wrong_main_parameter.invalid.java

+/* The grammar only allows String[] as parameter type for the main method. */
+class WrongMainParameter {
+    public static void main(int[] args) {
+    }
+}