Misc.make_visitor.py Maven / Gradle / Ivy
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Jython is an implementation of the high-level, dynamic, object-oriented
language Python written in 100% Pure Java, and seamlessly integrated with
the Java platform. It thus allows you to run Python on any Java platform.
"""generate vistor code for javacc grammar. code goes in SimpleNode.java"""
import string
file = "c:\\jpython\\JavaCode\\org\\python\\parser\\PythonGrammarTreeConstants.java"
fp = open(file, "r")
lines = fp.readlines()
fp.close()
names = []
in_names = 0
for line in lines:
if in_names:
if "}" in line:
in_names = 0
continue
name = string.split(line, '"')[1]
#if name != 'void':
names.append(name)
else:
if "[" in line:
in_names = 1
print names
print "\t\tswitch(id) {"
for i in range(len(names)):
print "\t\tcase %d:\r" % i
print "\t\t\treturn visitor.%s(this);\r" % names[i]
print "\t\t}\r"
for name in names:
print "\tpublic Object %s(SimpleNode n) throws Exception {\r" % name
print '\t\tthrow new ParseException("Unhandled Node: "+n);\r'
print "\t}\r"
print '\r'