import color, mode
from lex import Grammar, PatternRule, RegionRule

class StringGrammar(Grammar):
    rules = [
        PatternRule(r'escaped', r'\\.'),
    ]

class BDSGrammar(Grammar):
    rules = [
        PatternRule(r'comment', r'#.*$'),
        PatternRule(r'bds_section', r'section(?= *\()'),
        PatternRule(r'bds_component', r"[A-Z]{2}\d{3}-\d{3}-\d{3}(?= *\()"),
        PatternRule(r'bds_attr_name', r"[a-z_]+(?==)"),
        RegionRule(r'bds_attr_value', r'(?<=)"', StringGrammar, r'"'),
        RegionRule(r'bds_attr_value', r"(?<=)'", StringGrammar, r"'"),
        PatternRule(r'bds_num', r"-?(?:[0-9][0-9\.]*[0-9]|[0-9])"),
        PatternRule(r'bds_alias', r"[a-z0-9]+(?=:[A-Z]{2}\d{3}-\d{3}-\d{3})"),
        PatternRule(r'bds_id', r"[A-Z]{2}\d{3}-\d{3}-\d{3}"),
        PatternRule(r'bds_func', r"[a-zA-Z0-9_]+(?= *\()"),
        RegionRule(r'bds_string', r'"', StringGrammar, r'"'),
        RegionRule(r'bds_string', r"'", StringGrammar, r"'"),
    ]

class BDS(mode.Fundamental):
    modename   = 'bds'
    extensions = ['.bds']
    grammar    = BDSGrammar
    colors     = {
        'bds_section':          ('blue', 'default', 'bold'),
        'bds_component':        ('magenta', 'default', 'bold'),
        'bds_attr_name':        ('blue', 'default', 'bold'),
        'bds_attr_value.start': ('green', 'default', 'bold'),
        'bds_attr_value.null':  ('green', 'default', 'bold'),
        'bds_attr_value.end':   ('green', 'default', 'bold'),
        'bds_num':              ('red', 'default', 'bold'),
        'bds_alias':            ('magenta', 'default', 'bold'),
        'bds_id':               ('yellow', 'default', 'bold'),
        'bds_func':             ('cyan', 'default', 'bold'),
        'bds_op':               ('magenta', 'default', 'bold'),
        'bds_string.start':     ('red', 'default', 'bold'),
        'bds_string.null':      ('red', 'default', 'bold'),
        'bds_string.end':       ('red', 'default', 'bold'),
    }

install = BDS.install