Python Bool Exemples

Exemple #1

def negate_clause(c: Expr) -> Expr:
    if isinstance(c, syntax.Bool):
        return syntax.Bool(not c.val)
    elif isinstance(c, syntax.UnaryExpr):
        assert c.op == 'NOT'
        return c.arg
    elif isinstance(c, syntax.BinaryExpr):
        assert c.op in ['EQUAL', 'NOTEQ']
        op = 'NOTEQ' if c.op == 'EQUAL' else 'EQUAL'
        return syntax.BinaryExpr(op, c.arg1, c.arg2)
    elif isinstance(c, syntax.NaryExpr):
        assert c.op == 'OR'
        return syntax.NaryExpr('AND', [negate_clause(arg) for arg in c.args])
    elif isinstance(c, syntax.AppExpr) or isinstance(c, syntax.Id):
        return syntax.Not(c)
    else:
        assert False, f'unsupported expression {c} in negate_clause'

Exemple #2

def negate_clause(c: Expr) -> Expr:
    if isinstance(c, syntax.Bool):
        return syntax.Bool(not c.val)
    elif isinstance(c, syntax.UnaryExpr):
        assert c.op == 'NOT'
        return c.arg
    elif isinstance(c, syntax.BinaryExpr):
        assert c.op in ['EQUAL', 'NOTEQ']
        op = 'NOTEQ' if c.op == 'EQUAL' else 'EQUAL'
        return syntax.BinaryExpr(op, c.arg1, c.arg2)
    elif isinstance(c, syntax.NaryExpr):
        assert c.op == 'OR'
        return syntax.NaryExpr('AND', tuple(negate_clause(arg) for arg in c.args))
    elif isinstance(c, syntax.AppExpr) or isinstance(c, syntax.Id):
        return syntax.Not(c)
    elif isinstance(c, syntax.QuantifierExpr):
        assert c.quant == 'FORALL'
        return syntax.QuantifierExpr('EXISTS', c.get_vs(), negate_clause(c.body))
    else:
        assert False, f'unsupported expression {c} in negate_clause'

Exemple #3

Fichier : parser.py Projet : jrkoenig/mypyvy

def p_expr_false(p: Any) -> None:
    'expr : FALSE'
    p[0] = syntax.Bool(p.slice[1], False)

Exemple #4

Fichier : parser.py Projet : jrkoenig/mypyvy

def p_expr_true(p: Any) -> None:
    'expr : TRUE'
    p[0] = syntax.Bool(p.slice[1], True)

Exemple #5

def p_expr_false(p: Any) -> None:
    'expr : FALSE'
    p[0] = syntax.Bool(False, span=span_from_tok(p.slice[1]))

Exemple #6

def p_expr_true(p: Any) -> None:
    'expr : TRUE'
    p[0] = syntax.Bool(True, span=span_from_tok(p.slice[1]))