本文整理汇总了Python中jmespath.ast.index方法的典型用法代码示例。如果您正苦于以下问题：Python ast.index方法的具体用法？Python ast.index怎么用？Python ast.index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jmespath.ast的用法示例。
在下文中一共展示了ast.index方法的5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: _token_nud_lbracket
# 需要导入模块: from jmespath import ast [as 别名]
# 或者: from jmespath.ast import index [as 别名]
def _token_nud_lbracket(self, token):
if self._current_token() in ['number', 'colon']:
right = self._parse_index_expression()
# We could optimize this and remove the identity() node.
# We don't really need an index_expression node, we can
# just use emit an index node here if we're not dealing
# with a slice.
return self._project_if_slice(ast.identity(), right)
elif self._current_token() == 'star' and \
self._lookahead(1) == 'rbracket':
self._advance()
self._advance()
right = self._parse_projection_rhs(self.BINDING_POWER['star'])
return ast.projection(ast.identity(), right)
else:
return self._parse_multi_select_list() 示例2: _parse_slice_expression
# 需要导入模块: from jmespath import ast [as 别名]
# 或者: from jmespath.ast import index [as 别名]
def _parse_slice_expression(self):
# [start:end:step]
# Where start, end, and step are optional.
# The last colon is optional as well.
parts = [None, None, None]
index = 0
current_token = self._current_token()
while not current_token == 'rbracket' and index < 3:
if current_token == 'colon':
index += 1
if index == 3:
self._raise_parse_error_for_token(
self._lookahead_token(0), 'syntax error')
self._advance()
elif current_token == 'number':
parts[index] = self._lookahead_token(0)['value']
self._advance()
else:
self._raise_parse_error_for_token(
self._lookahead_token(0), 'syntax error')
current_token = self._current_token()
self._match('rbracket')
return ast.slice(*parts) 示例3: _token_led_lbracket
# 需要导入模块: from jmespath import ast [as 别名]
# 或者: from jmespath.ast import index [as 别名]
def _token_led_lbracket(self, left):
token = self._lookahead_token(0)
if token['type'] in ['number', 'colon']:
right = self._parse_index_expression()
if left['type'] == 'index_expression':
# Optimization: if the left node is an index expr,
# we can avoid creating another node and instead just add
# the right node as a child of the left.
left['children'].append(right)
return left
else:
return self._project_if_slice(left, right)
else:
# We have a projection
self._match('star')
self._match('rbracket')
right = self._parse_projection_rhs(self.BINDING_POWER['star'])
return ast.projection(left, right) 示例4: _parse_slice_expression
# 需要导入模块: from jmespath import ast [as 别名]
# 或者: from jmespath.ast import index [as 别名]
def _parse_slice_expression(self):
# [start:end:step]
# Where start, end, and step are optional.
# The last colon is optional as well.
parts = [None, None, None]
index = 0
current_token = self._current_token()
while not current_token == 'rbracket' and index < 3:
if current_token == 'colon':
index += 1
self._advance()
elif current_token == 'number':
parts[index] = self._lookahead_token(0)['value']
self._advance()
else:
t = self._lookahead_token(0)
lex_position = t['start']
actual_value = t['value']
actual_type = t['type']
raise exceptions.ParseError(lex_position, actual_value,
actual_type, 'syntax error')
current_token = self._current_token()
self._match('rbracket')
return ast.slice(*parts) 示例5: _parse_index_expression
# 需要导入模块: from jmespath import ast [as 别名]
# 或者: from jmespath.ast import index [as 别名]
def _parse_index_expression(self):
# We're here:
# [<current>
# ^
# | current token
if (self._lookahead(0) == 'colon' or
self._lookahead(1) == 'colon'):
return self._parse_slice_expression()
else:
# Parse the syntax [number]
node = ast.index(self._lookahead_token(0)['value'])
self._advance()
self._match('rbracket')
return node