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#!/usr/bin/env python3
from __future__ import annotations
import pkgutil
import sys
from pathlib import Path
from tatsu import compile
from .semantics import ANTLRSemantics
def antlr_grammar():
return str(pkgutil.get_data(__name__, 'antlr.ebnf'), 'utf-8')
def translate(
text=None, filename=None, name=None, encoding='utf-8', trace=False,
):
if text is None and filename is None:
raise ValueError('either `text` or `filename` must be provided')
if filename:
filename = Path(filename)
if text is None:
name = name or filename.stem
with filename.open(encoding=encoding) as f:
text = f.read()
name = name or 'Unknown'
semantics = ANTLRSemantics(name)
grammar = compile(antlr_grammar())
model = grammar.parse(
text,
name=name,
filename=filename,
semantics=semantics,
trace=trace,
colorize=True,
)
print(model)
def main():
if len(sys.argv) < 2:
thisprog = Path(sys.argv[0]).name
print(thisprog)
print('Usage:')
print('\t', thisprog, 'FILENAME.g [--trace]')
sys.exit(1)
translate(
filename=sys.argv[1], trace='--trace' in sys.argv or '-t' in sys.argv,
)
if __name__ == '__main__':
main()
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