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\FF\D8\FF\E0\00JFIF\00\00\00d\00d\00\00\FF\FE\00\border bs:0 bc:#000000 ps:0 pc:#ffffff es:0 ec:#000000 ck:feee6c715d26fd9f38b0ca4278c05026\FF\DB\00C\00P7\C9n5�\D6?\BD�\9Ds\EBp\9F[`8m\B7)o\B5\E8\E6I\99\FE3]]A2\BA\8Cw\D6E\93\\DEv\C8\009\F2\F1NI?uc\\F5\EA\96k\xN<~buv\EA\C8\D7 \8B\84\CEcxI\BBg\AE\9E=\D6+n\EC\80\C8A\8C\AE\EB\CF\D5\DA\E9"2\A4\B9j5\EB\F3W\B63\96\B30Yu\DA\FC8\ED\DF\E7Ms\FB\F1\8E\B3\FA\EA\E8\E6(\883zs\F2_\8DFk\8Bh \00\8C\DCw\D3R\B5+6X\BA\B2\C4j\AB0\B4\FCMw\C2I\8E\9B\E3\A9~9u\FA\D3l\80\C8%p\EE\FDn2� \00$\FEj\C4e\A9\DB\~\95\A7\A5\80EK\BB\8DDsP\00@@AD'k\CF\E8\DB\D2(\80\9AK\D3\85\D6lb\F2\BA\8C*\80\00)\95 59\A3R:\F3\CE"\B6\80\88\00\00i1u4�\E9\F2�\A6\A2\FACM\93WMb*\E0*\00\00\00\00\00(\A8\80\00\00\80\00\00\00\00\00\00\00\00\00\FF\D9 C/// #----------------------------------------------------------------- # plyparser.py # # PLYParser class and other utilities for simplifying programming # parsers with PLY # # Eli Bendersky [https://eli.thegreenplace.net/] # License: BSD #----------------------------------------------------------------- import warnings class Coord(object): """ Coordinates of a syntactic element. Consists of: - File name - Line number - (optional) column number, for the Lexer """ __slots__ = ('file', 'line', 'column', '__weakref__') def __init__(self, file, line, column=None): self.file = file self.line = line self.column = column def __str__(self): str = "%s:%s" % (self.file, self.line) if self.column: str += ":%s" % self.column return str class ParseError(Exception): pass class PLYParser(object): def _create_opt_rule(self, rulename): """ Given a rule name, creates an optional ply.yacc rule for it. The name of the optional rule is _opt """ optname = rulename + '_opt' def optrule(self, p): p[0] = p[1] optrule.__doc__ = '%s : empty\n| %s' % (optname, rulename) optrule.__name__ = 'p_%s' % optname setattr(self.__class__, optrule.__name__, optrule) def _coord(self, lineno, column=None): return Coord( file=self.clex.filename, line=lineno, column=column) def _token_coord(self, p, token_idx): """ Returns the coordinates for the YaccProduction object 'p' indexed with 'token_idx'. The coordinate includes the 'lineno' and 'column'. Both follow the lex semantic, starting from 1. """ last_cr = p.lexer.lexer.lexdata.rfind('\n', 0, p.lexpos(token_idx)) if last_cr < 0: last_cr = -1 column = (p.lexpos(token_idx) - (last_cr)) return self._coord(p.lineno(token_idx), column) def _parse_error(self, msg, coord): raise ParseError("%s: %s" % (coord, msg)) def parameterized(*params): """ Decorator to create parameterized rules. Parameterized rule methods must be named starting with 'p_' and contain 'xxx', and their docstrings may contain 'xxx' and 'yyy'. These will be replaced by the given parameter tuples. For example, ``p_xxx_rule()`` with docstring 'xxx_rule : yyy' when decorated with ``@parameterized(('id', 'ID'))`` produces ``p_id_rule()`` with the docstring 'id_rule : ID'. Using multiple tuples produces multiple rules. """ def decorate(rule_func): rule_func._params = params return rule_func return decorate def template(cls): """ Class decorator to generate rules from parameterized rule templates. See `parameterized` for more information on parameterized rules. """ issued_nodoc_warning = False for attr_name in dir(cls): if attr_name.startswith('p_'): method = getattr(cls, attr_name) if hasattr(method, '_params'