import color, mode2

from point2 import Point
from lex2 import Grammar, ConstantRule, PatternRule, RegionRule, DualRegionRule

class MetadataGrammar(Grammar):
    rules = [
        PatternRule(
            name=r'username',
            pattern='[a-zA-Z0-9_]+',
        ),
    ]

class BlameGrammar(Grammar):
    rules = [
        RegionRule(
            name=r'metadata',
            start=r'^[0-9\.]+',
            grammar=MetadataGrammar(),
            end=r'[0-9]{4}-[0-9]{2}-[0-9]{2}',
        ),
        PatternRule(
            name=r'data',
            pattern=r'.+$',
        ),
    ]

class Blame(mode2.Fundamental):
    grammar = BlameGrammar()
    def __init__(self, w):
        mode2.Fundamental.__init__(self, w)
        self.colors = {
            'metadata.start':    color.build('blue', 'default', 'bold'),
            'metadata.username': color.build('cyan', 'default', 'bold'),
            'metadata.end':      color.build('green', 'default', 'bold'),
        }
    def name(self):
        return "Blame"