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#!/usr/bin/env python
# -*- mode: python -*-
import sys
from ometa.runtime import ParseError
from ometa.grammar import OMeta
from ometa.builder import writePython
from ometa.vm_builder import writeBytecode, bytecodeToPython
if len(sys.argv) != 3:
print "Usage: generate_grammar grammar-filename python-filename"
sys.exit(1)
def findObject(name):
classSplit = name.split('.')
modname = '.'.join(classSplit[:-1])
topLevel = __import__(modname)
packages = modname.split(".")[1:]
module = topLevel
for p in packages:
module = getattr(module, p)
return getattr(module, classSplit[-1])
grammar = findObject(sys.argv[1])
pythonFile = open(sys.argv[2], 'w')
g = OMeta(grammar)
tree = g.parseGrammar("Parser")
# source = writePython(tree)
bytecode = writeBytecode(tree)
source = bytecodeToPython(bytecode)
pythonFile.write("from ometa.runtime import OMetaBase as GrammarBase\n")
pythonFile.write(source)
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