111 lines
3.5 KiB
Python
111 lines
3.5 KiB
Python
from xml.etree import ElementTree
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import logging
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from component import Component, ComponentType
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from lemma_features import get_lemma_features
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class SyntacticStructure:
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def __init__(self):
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self.id = None
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self.lbs = None
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self.components = []
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@staticmethod
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def from_xml(xml):
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st = SyntacticStructure()
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st.id = xml.get('id')
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st.lbs = xml.get('LBS')
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assert len(list(xml)) == 1
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system = next(iter(xml))
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assert system.get('type') == 'JOS'
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components, dependencies, definitions = list(system)
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deps = [(dep.get('from'), dep.get('to'), dep.get('label'), dep.get('order'))
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for dep in dependencies]
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comps = {comp.get('cid'): dict(comp.items()) for comp in components}
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restrs, forms = {}, {}
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for comp in definitions:
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n = comp.get('cid')
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restrs[n] = None
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forms[n] = []
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for el in comp:
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if el.tag.startswith("restriction"):
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assert restrs[n] is None
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restrs[n] = el
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elif el.tag.startswith("representation"):
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st.add_representation(n, el, forms)
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else:
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raise NotImplementedError("Unknown definition: {} in structure {}"
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.format(el.tag, st.id))
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fake_root_component = Component({'cid': '#', 'type': 'other'})
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st.components = fake_root_component.find_next(deps, comps, restrs, forms)
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st.determine_core2w()
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return st
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def determine_core2w(self):
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ppb_components = []
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for c in self.components:
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if c.type != ComponentType.Core:
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continue
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ppb = 4
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for r in c.restrictions:
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ppb = min(r.ppb, ppb)
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ppb_components.append((c, ppb))
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ppb_components = sorted(ppb_components, key=lambda c: c[1])
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if len(ppb_components) > 2 and ppb_components[1][1] == ppb_components[2][1]:
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raise RuntimeError("Cannot determine 2 'jedrna polnopomenska beseda' for", self.id)
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for c, _ in ppb_components[:2]:
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c.type = ComponentType.Core2w
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def add_representation(self, n, rep_el, forms):
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assert rep_el.tag == "representation"
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to_add = []
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for el in rep_el:
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assert el.tag == "feature"
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if 'rendition' in el.attrib or 'selection' in el.attrib:
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to_add.append(el)
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else:
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logging.warning("Strange representation feature in structure {}. Skipping"
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.format(self.id))
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continue
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forms[n].append(to_add)
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def get_component(self, idx):
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for c in self.components:
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if c.idx == idx:
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return c
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raise RuntimeError("Unknown component id: {}".format(idx))
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def match(self, word):
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matches = self.components[0].match(word)
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return [] if matches is None else matches
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def build_structures(filename):
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max_num_components = -1
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with open(filename, 'r') as fp:
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et = ElementTree.XML(fp.read())
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structures = []
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for structure in et.iter('syntactic_structure'):
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to_append = SyntacticStructure.from_xml(structure)
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if to_append is None:
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continue
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structures.append(to_append)
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max_num_components = max(max_num_components, len(to_append.components))
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lemma_features = get_lemma_features(et)
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return structures, lemma_features, max_num_components
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