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

# this is a comment
class StringGrammar1(Grammar):
    rules = [
        PatternRule(r'data', r"[^\\']+"),
        PatternRule(r'escaped', r'\\.'),
    ]
class StringGrammar2(Grammar):
    rules = [
        PatternRule(r'data', r'[^\\"]+'),
        PatternRule(r'escaped', r'\\.'),
    ]

tbbid = r'[A-Z]{2}\d{3}-\d{3}-\d{3}'

class BDSGrammar(Grammar):
    rules = [
        PatternRule(r'comment', r'#.*$'),
        PatternRule(r'bds.section', r'section(?= *\()'),
        PatternRule(r'bds.component', tbbid + r"(?= *\()"),
        PatternRule(r'bds.attr_name', r"[a-z_]+(?==)"),
        RegionRule(r'bds.attr_value', r"(?<=)'", StringGrammar1, r"'"),
        RegionRule(r'bds.attr_value', r'(?<=)"', StringGrammar2, r'"'),
        PatternRule(r'bds.num', r"-?(?:[0-9][0-9\.]*[0-9]|[0-9])"),
        PatternRule(r'bds.alias', r"[a-z0-9]+(?=:" + tbbid + ")"),
        PatternRule(r'bds.id', tbbid),
        PatternRule(r'bds.func', r"[a-zA-Z0-9_]+(?= *\()"),
        RegionRule(r'bds.string', r"'", StringGrammar1, r"'"),
        RegionRule(r'bds.string', r'"', StringGrammar2, r'"'),
    ]

class BDS(Fundamental):
    name       = '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