Add SystemVerilog support

tests/syntax-tests/source/SystemVerilog/output.sv

@@ -0,0 +1,103 @@
+`timescale 1ns/1ps
+
+// Design Code
+module ADDER(
+    input clk,
+    input [7:0]	a,
+    input [7:0]	b,
+    input bIsPos,
+    output reg [8:0] result
+);
+
+    always @ (posedge clk) begin
+        if (bIsPos) begin	
+            result <= a + b;
+        end else begin
+            result <= a - b;
+        end
+    end
+
+endmodule: ADDER
+
+interface adder_if(
+    input bit clk,
+    input [7:0] a,
+    input [7:0] b,
+    input bIsPos,
+    input [8:0] result
+);
+
+    clocking cb @(posedge clk);
+        output a;
+        output b;
+        output bIsPos;
+        input result;
+    endclocking : cb
+
+endinterface: adder_if
+
+
+bind ADDER adder_if my_adder_if(
+    .clk(clk),
+    .a(a),
+    .b(b),
+    .bIsPos(bIsPos),
+    .result(result)
+);
+
+
+// Testbench Code
+import uvm_pkg::*;
+`include "uvm_macros.svh"
+
+class testbench_env extends uvm_env;
+
+    virtual adder_if m_if;
+
+    function new(string name, uvm_component parent = null);
+        super.new(name, parent);
+    endfunction
+    
+    function void connect_phase(uvm_phase phase);
+        assert(uvm_resource_db#(virtual adder_if)::read_by_name(get_full_name(), "adder_if", m_if));
+    endfunction: connect_phase
+
+    task run_phase(uvm_phase phase);
+        phase.raise_objection(this);
+        `uvm_info(get_name(), "Starting test!", UVM_HIGH);
+        begin
+            int a = 8'h4, b = 8'h5;
+            @(m_if.cb);
+            m_if.cb.a <= a;
+            m_if.cb.b <= b;
+            m_if.cb.bIsPos <= 1'b1;
+            repeat(2) @(m_if.cb);
+            `uvm_info(get_name(), $sformatf("%0d + %0d = %0d", a, b, m_if.cb.result), UVM_LOW);
+        end
+        `uvm_info(get_name(), "Ending test!", UVM_HIGH);
+        phase.drop_objection(this);
+    endtask: run_phase
+endclass
+
+
+module top;
+
+    bit clk;
+    env environment;
+    ADDER dut(.clk (clk));
+
+    initial begin
+        environment = new("testbench_env");
+        uvm_resource_db#(virtual adder_if)::set("env", "adder_if", dut.my_adder_if);
+        clk = 0;
+        run_test();
+    end
+
+    // Clock generation	
+    initial begin
+        forever begin
+            #(1) clk = ~clk;
+        end
+    end
+    
+endmodule