#! /usr/bin/python
# -*- coding: utf-8 -*-

from Phrase import phrase_from_tree


def analyze_tree(tree):

    opinion = tree._children[0]._children[0]._attrs['value']
    phrases = [phrase_from_tree(tree._children[1]._children[0]._children[0])]
    if len(tree._children[1]._children[0]._children) > 1:
        print "ERR"
    
    return opinion, phrases
        

class PhraseTypeExpansion:

    def __init__(self, opinion, phrases):
        self._phrases = phrases
        self._opinion = opinion

    @classmethod
    def fromTree(cls, expansion_tree):
        opinion, phrases = analyze_tree(expansion_tree)
        return cls(opinion, phrases)

    def __unicode__(self):
        return '[' + ','.join([unicode(phrase) for phrase in self._phrases]) + ']'

    def toUnicode(self, phrase_type):
        return unicode(self)