janware/jw-python
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grammar.py et al: Centralize more code

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More code is removed from the special parser directories and centralized
into grammar.py, Cmd.py, and generate-flex-bison.mk.

Signed-off-by: Jan Lindemann <jan@janware.com>
This commit is contained in:
Jan Lindemann 2017-10-29 18:25:55 +01:00
commit 6297f10f55
6 changed files with 210 additions and 177 deletions
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75
test/grammar/generate.py
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@ -1,79 +1,6 @@
#!/usr/bin/python
# -*- coding: utf-8 -*-
from __future__ import print_function
import argparse
import sys
import re
import textwrap
from collections import OrderedDict
from abc import abstractmethod
import jwutils
from jwutils.log import *
from jwutils import grammar
base = 'grammartest'
mip = '_JW_PYTHON_' + base + base.upper()
namespace = base
def create_grammartest_ebnf(grammar):
print(jwutils.grammar.create_ebnf(grammar))
def create_grammartest_y(grammar):
print(jwutils.grammar.create_yacc(grammar))
def create_grammartest_l(grammar):
print(jwutils.grammar.create_lex(grammar))
def create_include_grammartest_h(grammar):
print(jwutils.grammar.create_header(grammar, mip=mip, namespace=namespace))
class GrammarCmd(jwutils.grammar.GrammarCmd):
def __init__(self, name, help):
super(GrammarCmd, self).__init__(name, help=help)
@abstractmethod
def _run(self, grammar):
pass
def add_parser(self, parsers):
p = super(GrammarCmd, self).add_parser(parsers)
return p
def run(self, args):
with open(args.input, 'r') as infile:
contents = infile.read()
grammar = jwutils.grammar.grammar_parse_ebnf(contents)
grammar = super(GrammarCmd, self).processGrammar(args, grammar)
self._run(args, grammar)
class CmdCreate(GrammarCmd):
def __init__(self):
super(CmdCreate, self).__init__("create", help="Create a file")
def add_parser(self, parsers):
p = super(CmdCreate, self).add_parser(parsers)
p.add_argument("output", help="output file")
return p
def _run(self, args, grammar):
cmd = getattr(sys.modules[__name__], 'create_' + re.sub(r'[-./]', '_', args.output))
cmd(grammar)
class CmdCheck(GrammarCmd):
def __init__(self):
super(CmdCheck, self).__init__("check", help="Check grammar")
def add_parser(self, parsers):
p = super(CmdCheck, self).add_parser(parsers)
return p
def _run(self, args, grammar):
pass
jwutils.run_sub_commands('generate Test parser files')
jwutils.run_sub_commands('generate Test parser files', modules = ['jwutils.grammar'])