Added C-code generator + test to TDDD55-lab

This PR adds a C-Code generator to the Lab skeleton. It can be invoked by running:

compiler -c

Also there is a test file that can be run, by bash:

codegen-test.sh

lab3-4/Makefile

@@ -15,6 +15,8 @@ OUTFILE =	compiler
 
 FLEX	= flex
 BISON	= bison
+TESTFILES=expression_test.c factorial_test.c fibonacci_test.c sort_test.c simple_array_test.c
+TESTEXECS=expression_test factorial_test fibonacci_test sort_test simple_array_test
 
 DPFILE  =	Makefile.dependencies
 
@@ -39,10 +41,9 @@ parser.o : parser.cc
 	$(CC) $(CFLAGS) -c $<
 
 clean : 
-	rm -f $(OBJECTS) core *~ scanner.cc parser.cc parser.hh $(DPFILE) $(OUTFILE) parser.cc.output
+	rm -f $(OBJECTS) core *~ scanner.cc parser.cc parser.hh $(DPFILE) $(OUTFILE) parser.cc.output  $(TESTFILES) $(TESTEXECS)
 	touch $(DPFILE)
 
-
 $(DPFILE) depend : $(BASESRC) $(HEADERS)
 	$(CC) $(DPFLAGS) $(CFLAGS) $(BASESRC) > $(DPFILE)