make: Move grammar generation to makefile

Makefile

@@ -16,4 +16,13 @@ test: typecheck unit
 %.mypy : %
 	$(MYPY) --check-untyped-defs --warn-redundant-casts --warn-unused-ignores --warn-return-any $<
 
+GRMS=DFA NFA CFG RegEx
+
+grammars : $(GRMS:%=lib/parsing/%Parser.py)
+
+$(GRMS:%=lib/parsing/%Parser.py) : lib/parsing/%Parser.py : lib/parsing/%.g4
+	antlr4 -Dlanguage=Python3 -visitor $<
+	@# let's be a bit more permissive for versions
+	sed -i '/self.checkVersion(".*")/d' $(@:%Parser.py=%*.py)
+
 .PHONY: %.mypy typecheck test unit all

regenerate_grammars.sh

-#!/bin/bash
-export CLASSPATH=".:/usr/local/lib/antlr-4.8-complete.jar:\$CLASSPATH"
-alias antlr4='java -Xmx500M -cp "/usr/local/lib/antlr-4.8-complete.jar:\$CLASSPATH" org.antlr.v4.Tool'
-antlr4 -Dlanguage=Python3 lib/parsing/DFA.g4
-antlr4 -Dlanguage=Python3 lib/parsing/NFA.g4
-antlr4 -Dlanguage=Python3 lib/parsing/CFG.g4
-antlr4 -Dlanguage=Python3  -visitor lib/parsing/RegEx.g4