Add verific chparam tests

verific/chparam/Makefile

+all: test1.status test2.status test3.status test4.status test5.status
+	@grep -H . *.status | sed 's,.status:,\t,; s,PASS,pass,;' | expand -t20
+	@touch .stamp
+
+test1.status: test1.out
+	@grep -q -e "^Importing module top_veri_v2k(WIDTH=2).$$" -e "^Importing module top_veri_95(WIDTH=2).$$" -e "^Importing module top_vhdl(width=2).$$" $<  && echo PASS > $@ || echo FAIL > $@
+
+test2.status: test2.out
+	@grep -q -e "^Importing module top_veri_v2k(greeting=\"hola hola\").$$" -e "^Importing module top_veri_95(greeting=\"hola hola\").$$" -e "^Importing module top_vhdl(greeting=\"hola hola\").$$" $<  && echo PASS > $@ || echo FAIL > $@
+
+test3.status: test3.out
+	@grep -q -e "^Importing module top_veri_v2k.$$" -e "^Importing module top_veri_95.$$" -e "^Importing module top_vhdl.$$" $<  && echo PASS > $@ || echo FAIL > $@
+
+test4.status: test4.out
+	@grep -q -e "^Importing module top_veri_v2k.$$" \
+                 -e "^Importing module top_veri_95.$$" \
+		 -e "^Importing module top_vhdl.$$" \
+                 -e "^VERIFIC-WARNING \\[VHDL-1676\\] top.vhd:1: unit 'top_vhdl' does not have a generic named 'nonexistent' to override$$" \
+		 -e "^VERIFIC-WARNING \\[VERI-1928\\] top.v:1: module 'top_veri_v2k' does not have a parameter named 'nonexistent' to override$$" \
+		 -e "^VERIFIC-WARNING \\[VERI-1928\\] top.v:10: module 'top_veri_95' does not have a parameter named 'nonexistent' to override$$" \
+		 $<  && echo PASS > $@ || echo FAIL > $@
+
+test5.status: test5.out
+	@grep -q -e "^Importing module top_veri_v2k(WIDTH=2,INIT=0,greeting=\"bonjour  \").$$" \
+                 -e "^Importing module top_veri_95(WIDTH=2,INIT=0,greeting=\"bonjour  \").$$" \
+                 -e "^Importing module top_vhdl(width=2,init='0',greeting=\"bonjour  \").$$" \
+                 -e "^VERIFIC-WARNING \\[VHDL-1676\\] top.vhd:1: unit 'top_vhdl' does not have a generic named 'nonexistent' to override$$" \
+		 -e "^VERIFIC-WARNING \\[VERI-1928\\] top.v:1: module 'top_veri_v2k' does not have a parameter named 'nonexistent' to override$$" \
+		 -e "^VERIFIC-WARNING \\[VERI-1928\\] top.v:10: module 'top_veri_95' does not have a parameter named 'nonexistent' to override$$" \
+                 $<  && echo PASS > $@ || echo FAIL > $@
+
+test1.out test2.out test3.out test4.out test5.out: test.ys top.v top.vhd
+	@yosys -q -q test.ys
+
+clean:
+	rm -f *.status *.out .stamp
+
+.PHONY: all clean

verific/chparam/test.ys

+# Regular override integer
+verific -sv top.v
+verific -vhdl top.vhd
+tee -o test1.out verific -import -chparam WIDTH 2 top_veri_v2k top_veri_95 top_vhdl
+
+# Regular override string
+design -reset
+verific -sv top.v
+verific -vhdl top.vhd
+tee -o test2.out verific -import -chparam greeting "hola hola" top_veri_v2k top_veri_95 top_vhdl
+
+# Non-existent overrides
+design -reset
+verific -sv top.v
+verific -vhdl top.vhd
+tee -o test3.out verific -import -chparam nonexistent 12345678 top_veri_v2k top_veri_95 top_vhdl
+
+# Duplicate overrides
+design -reset
+verific -sv top.v
+verific -vhdl top.vhd
+tee -o test4.out verific -import -chparam WIDTH 3 -chparam WIDTH 1 top_veri_v2k top_veri_95 top_vhdl
+
+# All of the above
+design -reset
+verific -sv top.v
+verific -vhdl top.vhd
+tee -o test5.out verific -import -chparam WIDTH 9999 -chparam WIDTH 2 -chparam INIT 0 -chparam greeting "bonjour  " -chparam nonexistent 12345678 top_veri_v2k top_veri_95 top_vhdl

verific/chparam/top.v

+module top_veri_v2k #(parameter WIDTH=1, INIT=1, greeting="hello") (input clk, input [WIDTH-1:0] i, output reg o);
+initial begin 
+	o <= INIT;
+	$display("%s", greeting);
+end
+always @(posedge clk)
+	o <= ^i;
+endmodule
+
+module top_veri_95(clk, i, o);
+parameter WIDTH=1;
+parameter INIT=1;
+parameter greeting="hello";
+input clk;
+input [WIDTH-1:0] i;
+output o;
+reg o;
+initial begin 
+	o <= INIT;
+	$display("%s", greeting);
+end
+always @(posedge clk)
+	o <= ^i;
+endmodule

verific/chparam/top.vhd

+entity top_vhdl is
+generic (WIDTH : integer := 1; INIT : bit := '1'; greeting : string(1 to 9) := "hello    ");
+port (clk : in bit; i : in bit_vector(WIDTH-1 downto 0); o : out bit := INIT);
+end entity;
+architecture rtl of top_vhdl is
+begin
+	process
+	begin
+		report greeting;
+		--wait;
+	end process;
+	process (clk)
+	begin
+		if rising_edge(clk) then
+			o <= xor i;
+		end if;
+	end process;
+end rtl;