Add additional regression tests for class syntax

Check that it is possible to both declare and call class constructors
without using parenthesis after the `new` keyword.

Check that a non-ANSI port for a class constructor results in an error.

Check that it is possible to invoke a class task through a implicit class
handle (`this` or `super`) without using parenthesis after the task name.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>

ivtest/ivltests/sv_class_constructor1.v

@@ -0,0 +1,14 @@
+// Check that a class constructor declaration without parenthesis after the
+// `new` is supported.
+
+module test;
+
+  class C;
+    function new;
+      $display("PASSED");
+    endfunction
+  endclass
+
+  C c = new;
+
+endmodule

ivtest/ivltests/sv_class_constructor_fail.v

@@ -0,0 +1,14 @@
+// Check that a class constructor with non-ANSI port results in an error.
+
+module test;
+
+  class C;
+    function new;
+      input x; // This is a syntax error
+      $display("FAILED");
+    endfunction
+  endclass
+
+  C c = new;
+
+endmodule

ivtest/ivltests/sv_class_super1.v

@@ -0,0 +1,21 @@
+// Check that it is possible to explicitly call the base class constructor, even
+// if it does not take any parameters. Check that it is possible to call it with
+// parenthesis after the `new`.
+
+module test;
+
+  class B;
+    function new();
+      $display("PASSED");
+    endfunction
+  endclass
+
+  class C extends B;
+    function new();
+      super.new();
+    endfunction
+  endclass
+
+  C c = new;
+
+endmodule

ivtest/ivltests/sv_class_super2.v

@@ -0,0 +1,21 @@
+// Check that it is possible to explicitly call the base class constructor, even
+// if it does not take any parameters. Check that it is possible to call it
+// without parenthesis after the `new`.
+
+module test;
+
+  class B;
+    function new();
+      $display("PASSED");
+    endfunction
+  endclass
+
+  class C extends B;
+    function new();
+      super.new;
+    endfunction
+  endclass
+
+  C c = new;
+
+endmodule

ivtest/ivltests/sv_class_task1.v

@@ -0,0 +1,22 @@
+// Check that it is possible to call a class task without parenthesis after the
+// task name when using the implicit `this` class handle.
+
+module test;
+
+  class C;
+    task a;
+      $display("PASSED");
+    endtask
+
+    task b;
+      this.a;
+    endtask
+  endclass
+
+  C c = new;
+
+  initial begin
+    c.b;
+  end
+
+endmodule

ivtest/regress-sv.list

@@ -474,11 +474,16 @@ sv_class21		normal,-g2009		ivltests
 sv_class22		normal,-g2009		ivltests
 sv_class23		normal,-g2009		ivltests
 sv_class24		normal,-g2009		ivltests
+sv_class_constructor1	normal,-g2009		ivltests
+sv_class_constructor_fail   CE,-g2009		ivltests
 sv_class_empty_item	normal,-g2009		ivltests
 sv_class_extends_scoped	normal,-g2009		ivltests
 sv_class_localparam	normal,-g2009		ivltests
 sv_class_new_init	normal,-g2009		ivltests
 sv_class_in_module_decl	normal,-g2009		ivltests
+sv_class_super1		normal,-g2009		ivltests
+sv_class_super2		normal,-g2009		ivltests
+sv_class_task1		normal,-g2009		ivltests
 sv_darray1		normal,-g2009		ivltests
 sv_darray2		normal,-g2009		ivltests
 sv_darray3		normal,-g2009		ivltests

ivtest/regress-vlog95.list

@@ -372,11 +372,15 @@ sv_class21		CE,-g2009		ivltests
 sv_class22		CE,-g2009		ivltests
 sv_class23		CE,-g2009		ivltests
 sv_class24		CE,-g2009		ivltests
+sv_class_constructor1	CE,-g2009		ivltests
 sv_class_empty_item	CE,-g2009		ivltests
 sv_class_extends_scoped	CE,-g2009		ivltests
 sv_class_localparam	CE,-g2009		ivltests
 sv_class_new_init	CE,-g2009		ivltests
 sv_class_in_module_decl	CE,-g2009		ivltests
+sv_class_super1		CE,-g2009		ivltests
+sv_class_super2		CE,-g2009		ivltests
+sv_class_task1		CE,-g2009		ivltests
 sv_end_label		CE,-g2009		ivltests  # Also generate
 sv_foreach2		CE,-g2009,-pallowsigned=1	ivltests
 sv_foreach3		CE,-g2009		ivltests