mirror of
ssh://git.janware.com/srv/git/janware/proj/jw-python
synced 2026-01-15 09:53:32 +01:00
Jan Lindemann
428692ea3a
- Add coding statement
- Import all modules in one line where possible
- Order: __future__, typing, plain imports, from imports,
janware modules
Signed-off-by: Jan Lindemann <jan@janware.com>
104 lines
3.3 KiB
Python
104 lines
3.3 KiB
Python
# -*- coding: utf-8 -*-
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class CppState: # export
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def __init__(self):
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self.__pair_square = ['[', ']']
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self.__pair_curly = ['{', '}']
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self.__pair_ext = ['<', '>']
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self.__pair_paren = ['(', ')']
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self.__pair_c_comment = ['/*', '*/']
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self.__pair_special = ['?', '?']
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self.reset()
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def reset(self):
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self.curly = 0
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self.square = 0
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self.ext = 0
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self.paren = 0
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self.in_c_comment = False
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self.in_cpp_comment = False
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self.in_special = False
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self.rule = []
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self.rules = []
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self.things = []
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def optional(self):
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return self.square != 0 or self.curly != 0
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def update(self, tok, line):
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if not self.in_comment():
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if tok == '[':
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self.square += 1
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self.things.append(self.__pair_square)
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elif tok == ']':
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self.square -= 1
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assert(self.things.pop() == self.__pair_square)
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elif tok == '{':
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self.curly += 1
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self.things.append(self.__pair_curly)
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elif tok == '}':
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self.curly -= 1
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assert(self.things.pop() == self.__pair_curly)
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elif tok == '(':
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self.paren += 1
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self.things.append(self.__pair_paren)
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elif tok == ')':
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self.paren -= 1
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assert(self.things.pop() == self.__pair_paren)
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elif tok == '<':
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self.ext += 1
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self.things.append(self.__pair_ext)
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elif tok == '>':
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self.ext -= 1
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assert(self.things.pop() == self.__pair_ext)
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elif tok == '?':
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if not self.in_special:
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self.in_special = True
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self.things.append(self.__pair_special)
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else:
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self.in_special = False
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assert(self.things.pop() == self.__pair_special)
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elif tok == '/*':
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self.in_c_comment = True
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self.things.append(self.__pair_c_comment)
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elif tok == '*/':
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raise Exception("Unmatched closing C-style comment mark", tok, "in line", line)
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else:
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if self.in_cpp_comment:
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if tok == '\n':
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self.in_cpp_comment = False
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return
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if tok == '/*':
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raise Exception("Nested C-style comment", tok, "in line", line)
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elif tok == '*/':
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assert(self.things.pop() == self.__pair_c_comment)
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self.in_c_comment = False
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if self.curly < 0 or self.square < 0 or self.ext < 0 or self.paren < 0:
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raise Exception("Unbalanced BNF bracket", tok, "in line", line)
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return self.optional()
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def in_list(self):
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return self.curly > 0
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def in_option(self):
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return self.square > 0
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def in_paren(self):
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return self.paren > 0
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def in_ext(self):
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return self.ext > 0
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def in_comment(self):
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return self.in_c_comment or self.in_cpp_comment
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def in_something(self):
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if len(self.things) == 0:
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return None
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return self.things[-1]
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def is_optional(self):
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return self.in_list() or self.in_option()
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