def main(filename): char_stream = antlr3.ANTLRFileStream(filename) tokens = antlr3.CommonTokenStream(JumpLexer(char_stream)) parser = JumpParser(tokens) root = parser.prog() g = make_graph(root.tree) g.optimize() print g.code_string()
def main(filename): char_stream = antlr3.ANTLRFileStream(filename) tokens = antlr3.CommonTokenStream(JumpLexer(char_stream)) parser = JumpParser(tokens) graph = parser.prog().graph while True: graph.construct() #graph.print_CFG(sys.stdout) if graph.perform_JE(): continue if graph.perform_UC(): continue if graph.perform_CP(): continue if graph.perform_DCE(): continue graph.print_source(sys.stdout)
def main(fileobj):
char_stream = antlr3.ANTLRInputStream(fileobj)
tokens = antlr3.CommonTokenStream(JumpLexer(char_stream))
parser = JumpParser(tokens)
root = parser.prog()
graph = CFGraph(root.tree)
optimised = False
code = [line for line in graph.generate()]
while not optimised:
graph.optimise(True)
current_code = [line for line in graph.generate()]
if code == current_code:
optimised = True
else:
code = current_code
print "\n".join(code)
with open('cfg.dot', 'w') as f:
graph.dotfile(f)
