³ò 4ÒÇIc@s<dZddklZdefd„ƒYZdd„ZdS(s Utility functions for parsers. iÿÿÿÿ(t load_earleyt TestGrammarcBs)eZdZeed„Zed„ZRS(s Unit tests for CFG. cCs=||_t|ddƒ|_||_||_||_dS(Nttracei(t test_grammarRtcptsuitet_acceptt_reject(tselftgrammarRtaccepttreject((s%/p/zhu/06/nlp/nltk/nltk/parse/util.pyt__init__s    c Csxÿ|iD]ô}|ddGxÈddgD]º}x±||D]¥}|iƒ}|ii|ƒ}|o'|o H|GHx|D] }|GHqyWn|djo(|gjotd|‚qßt}q:|otd|‚q:t} q:Wq)W|o| o dGHq q WdS( s| Sentences in the test suite are divided into two classes: - grammatical (C{accept}) and - ungrammatical (C{reject}). If a sentence should parse accordng to the grammar, the value of C{trees} will be a non-empty list. If a sentence should be rejected according to the grammar, then the value of C{trees} will be C{None}. tdoct:R R sSentence '%s' failed to parse'sSentence '%s' received a parse'sAll tests passed!N(RtsplitRtparset ValueErrortTrue( Rt show_treesttesttkeytsentttokensttreesttreetacceptedtrejected((s%/p/zhu/06/nlp/nltk/nltk/parse/util.pytrun!s0         (t__name__t __module__t__doc__tNoneR tFalseR(((s%/p/zhu/06/nlp/nltk/nltk/parse/util.pyRs s#%;cCsôg}xç|idƒD]Ö}|djp|d|joqn|iddƒ}t}t|ƒdjoM|dd jo|dd j}|d}q¹t|dƒ}|d}n|iƒ}|gjoqn|||fg7}qW|S( sg Parses a string with one test sentence per line. Lines can optionally begin with: - a C{bool}, saying if the sentence is grammatical or not, or - an C{int}, giving the number of parse trees is should have, The result information is followed by a colon, and then the sentence. Empty lines and lines beginning with a comment char are ignored. @return: a C{list} of C{tuple} of sentences and expected results, where a sentence is a C{list} of C{str}, and a result is C{None}, or C{bool}, or C{int} @param comment_chars: L{str} of possible comment characters. s tiRiiRttrueR!tfalse(sTruestruesFalsesfalse(sTruestrue(RR tlentint(tstringt comment_charst sentencestsentencet split_infotresultR((s%/p/zhu/06/nlp/nltk/nltk/parse/util.pytextract_test_sentencesCs % N(Rt featurechartRtobjectRR-(((s%/p/zhu/06/nlp/nltk/nltk/parse/util.pys s/