simplify postprocessing

Author: timfel

graalpython/com.oracle.graal.python.parser.antlr/Makefile

@@ -57,7 +57,7 @@ define postprocess_file
 	python ${POSTPROCESSOR} $(1)
 endef
 
-${PARSER_PATH}/%.java: ${SOURCE}
+${PARSER_PATH}/%.java: ${SOURCE} ${POSTPROCESSOR}
 	$(QUIETLY) ${JAVA_HOME}/bin/java -cp ${ANTLR_JAR} org.antlr.v4.Tool -visitor -package ${PARSER_PKG} -o ${PARSER_PATH} ${SOURCE}
 	$(QUIETLY) $(call postprocess_file,$@)
 

graalpython/com.oracle.graal.python.parser.antlr/postprocess.py

@@ -48,7 +48,6 @@
 """
 
 PTRN_SUPPRESS_WARNINGS = re.compile(r"@SuppressWarnings.*")
-PTRN_GENBY = re.compile(r"Generated from (?P<path>.*)/(?P<grammar>.*.g4)")
 
 
 def replace_suppress_warnings(line):
@@ -59,23 +58,17 @@ def replace_rulectx(line):
         return line.replace("(RuleContext)_localctx", "_localctx")
 
 
-def replace_genby(line):
-        return PTRN_GENBY.sub("Generated from \g<grammar>", line)
-
-
 TRANSFORMS = [
         replace_suppress_warnings,
         replace_rulectx,
-        replace_genby,
 ]
 
 
 def postprocess(file):
         lines = []
         for line in file:
                 for transform in TRANSFORMS:
-                        if hasattr(transform, '__call__'):
-                                line = transform(line)
+                        line = transform(line)
                 lines.append(line)
         return ''.join(lines)