本文整理汇总了Python中ometa.runtime.OMetaBase._or方法的典型用法代码示例。如果您正苦于以下问题：Python OMetaBase._or方法的具体用法？Python OMetaBase._or怎么用？Python OMetaBase._or使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类ometa.runtime.OMetaBase的用法示例。
在下文中一共展示了OMetaBase._or方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: test_orSimpleFailure
# 需要导入模块: from ometa.runtime import OMetaBase [as 别名]
# 或者: from ometa.runtime.OMetaBase import _or [as 别名]
def test_orSimpleFailure(self):
"""
When none of the alternatives passed to L{OMetaBase._or} succeed, the
one that got the furthest is returned.
"""
data = "foozle"
o = OMetaBase(data)
with self.assertRaises(ParseError) as e:
o._or([lambda: o.token("fog"), lambda: o.token("foozik"), lambda: o.token("woozle")])
self.assertEqual(e.exception[0], 4)
self.assertEqual(e.exception[1], expected("token", "foozik"))示例2: test_orErrorTie
# 需要导入模块: from ometa.runtime import OMetaBase [as 别名]
# 或者: from ometa.runtime.OMetaBase import _or [as 别名]
def test_orErrorTie(self):
"""
When branches of L{OMetaBase._or} produce errors that tie for rightmost
position, they are merged.
"""
data = "foozle"
o = OMetaBase(data)
v, e = o._or([lambda: o.token("fog"), lambda: o.token("foz"), lambda: o.token("f")])
self.assertEqual(e[0], 2)
self.assertEqual(e[1], [expected("token", "fog")[0], expected("token", "foz")[0]])示例3: test_orFalseSuccess
# 需要导入模块: from ometa.runtime import OMetaBase [as 别名]
# 或者: from ometa.runtime.OMetaBase import _or [as 别名]
def test_orFalseSuccess(self):
"""
When a failing branch of L{OMetaBase._or} gets further than a
succeeding one, its error is returned instead of the success branch's.
"""
data = "foozle"
o = OMetaBase(data)
v, e = o._or([lambda: o.token("fog"), lambda: o.token("foozik"), lambda: o.token("f")])
self.assertEqual(e[0], 4)
self.assertEqual(e[1], expected("token", "foozik"))示例4: test_or
# 需要导入模块: from ometa.runtime import OMetaBase [as 别名]
# 或者: from ometa.runtime.OMetaBase import _or [as 别名]
def test_or(self):
"""
L{OMetaBase._or} returns the result of the first of its
arguments to succeed.
"""
data = "a"
o = OMetaBase(data)
called = [False, False, False]
targets = ['b', 'a', 'c']
matchers = []
for i, m in enumerate(targets):
def match(i=i, m=m):
called[i] = True
return o.exactly(m)
matchers.append(match)
v, e = o._or(matchers)
self.assertEqual(called, [True, True, False])
self.assertEqual(v, 'a')
self.assertEqual(e.args[0], 0)