79 lines
2.7 KiB
Python
79 lines
2.7 KiB
Python
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class Context(object):
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"""This object stores and updates contextual metadata about the buffer."""
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def __init__(self, mode):
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self.mode = mode
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self.names = None
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self.namelines = None
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def region_added(self, p, newlines):
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self.adjust_name_map(p, len(newlines) - 1)
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self.rebuild_name_map(p.y, p.y + len(newlines))
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def region_removed(self, p1, p2):
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self.adjust_name_map(p2, p1.y - p2.y)
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self.rebuild_name_map(p1.y, p1.y + 1)
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def adjust_name_map(self, p, delta):
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if delta == 0:
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return
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elif delta > 0:
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self.namelines.extend([None] * delta)
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for i in reversed(range(p.y + 1, len(self.mode.window.buffer.lines))):
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self.namelines[i] = self.namelines[i - delta]
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for i in range(p.y, p.y + delta):
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self.namelines[i] = None
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else:
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for i in range(p.y + 1, len(self.mode.window.buffer.lines)):
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self.namelines[i + delta] = self.namelines[i]
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def _init_name_map(self):
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self.names = {}
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self.namelines = [None] * len(self.mode.window.buffer.lines)
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def build_name_map(self):
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self._init_name_map()
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self._build_name_map(0, len(self.mode.window.buffer.lines), None, None, [])
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def rebuild_name_map(self, y1, y2):
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for y in range(y1, y2):
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name = self.namelines[y]
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if name:
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if name in self.names:
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del self.names[name]
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if name in self.classes:
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del self.classes[name]
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if name in self.functions:
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del self.functions[name]
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self.namelines[y] = None
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if y1 == 0:
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self._build_name_map(y1, y2, None, None, [])
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else:
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last, curr, stack = None, self.namelines[y1 - 1], []
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count = 0
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if curr:
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for part in curr.split('.'):
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stack.append([count, part])
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count += self.mode.tabwidth
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self._build_name_map(y1, y2, last, curr, stack)
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def _build_name_map(self, y1, y2, last, curr, stack):
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raise Exception, 'unimplemented'
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def get_line_name(self, y):
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if self.namelines is None:
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self.build_name_map()
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if y < len(self.namelines):
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return self.namelines[y]
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else:
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return None
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def get_names(self):
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if self.names is None:
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self.build_name_map()
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return self.names
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def get_name_list(self):
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return self._ordered_dict(self.get_names())
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def _ordered_dict(self, d):
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pairs = [[d[key], key] for key in d]
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pairs.sort()
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return [x[1] for x in pairs]
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