22 lines
971 B
Python
22 lines
971 B
Python
import hypothesis.strategies as st
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from hypothesis_cfg import ContextFreeGrammarStrategy
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import stl
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GRAMMAR = {
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'phi': (('Unary', '(', 'phi', ')'), ('(', 'phi', ')', 'Binary', '(', 'phi',
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')'), ('AP', ), ('LINEQ', ), ('⊥', ),
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('⊤', )),
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'Unary': (('~', ), ('G', 'Interval'), ('F', 'Interval'), ('X', )),
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'Interval': (('', ), ('[1, 3]', )),
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'Binary': ((' | ', ), (' & ', ), (' U ', ), (' -> ', ), (' <-> ',),
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(' ^ ',)),
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'AP': (('AP1', ), ('AP2', ), ('AP3', ), ('AP4', ), ('AP5', )),
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'LINEQ': (('x > 4', ), ('y < 2', ), ('y >= 3', ), ('x + 2.0y >= 2', )),
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}
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SignalTemporalLogicStrategy = st.builds(lambda term: stl.parse(''.join(term)),
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ContextFreeGrammarStrategy(
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GRAMMAR,
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max_length=14,
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start='phi'))
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