preliminary work on sea of nodes based intermediate representation.

Makefile

@@ -3,8 +3,8 @@
 
 include config.mk
 
-SRC = lc.c utils.c lexer.c parser.c sema.c
-HDR = config.def.h utils.h lexer.h parser.h sema.h
+SRC = lc.c utils.c lexer.c parser.c sema.c ir.c
+HDR = config.def.h utils.h lexer.h parser.h sema.h ir.h
 OBJ = ${SRC:.c=.o}
 
 all: options lc
@@ -51,5 +51,9 @@ install: all
 uninstall:
 	rm -f ${DESTDIR}${PREFIX}/bin/lc\
 		${DESTDIR}${MANPREFIX}/man1/lc.1
+graph: clean all
+	./lc > graph.dot
+	dot -Tpdf graph.dot > graph.pdf
+	zathura ./graph.pdf
 
 .PHONY: all options clean dist install uninstall