import commands
import time
from tab import StackTabber
from method import Method 
from mode import Fundamental
from lex import Grammar, PatternRule, RegionRule, PatternMatchRule
from mode.python import StringGrammar1, StringGrammar2
from mode.pipe import Pipe
from method.shell import Interact

chr1 = '[a-zA-Z_]'
chr2 = '[a-zA-Z_0-9]'
word = chr1 + chr2 + '*'

class NestedCommentGrammar(Grammar): pass
NestedCommentGrammar.rules = [
    RegionRule('comment', r'/\*', NestedCommentGrammar, r'\*/'),
    PatternRule('data', r'(?:[^\*]|\*(?!/))+'),
]

class ScalaGrammar(Grammar):
    rules = [
        PatternRule('scala.comment', '//.*$'),
        RegionRule('scala.comment', r'/\*', NestedCommentGrammar, r'\*/'),

        PatternRule('spaces', r'(?:\t| )+'),
        PatternRule('eol', r'\n'),

        PatternRule('scala.reserved', '(?:yield|with|while|var|val|type|true|try|trait|throw|this|super|sealed|return|protected|private|package|override|object|null|new|match|lazy|import|implicit|if|forSome|for|finally|final|false|extends|else|do|def|class|catch|case|abstract)(?!%s)' % word),

        PatternRule('scala.integer', '-?(?:0|[1-9])[0-9]*[Ll]?'),
        PatternRule('scala.integer', '-?0x[0-9A-Fa-f]+[Ll]?'),
        PatternRule('scala.integer', '-?0[0-7]+[Ll]?'),

        PatternRule('scala.float', r'-?[0-9]+\.[0-9]*'), # FIXME

        PatternRule('scala.bool', '(?:true|false)(?![a-zA-Z0-9_])'),

        PatternRule('scala.char', r"'(?:[^'\\]|\\u[0-9A-Fa-f]{4}|\\[0-7]{1,3}|\\[btnfr\"'\\])'"),
        #PatternRule('scala.string', '-?[0-9]'),
        #PatternRule('scala.symbol', '-?[0-9]'),
        PatternRule('scalar.null', 'null'),
    ]

class Scala(Fundamental):
    name        = 'Scala'
    extensions  = ['.scala']
    grammar     = ScalaGrammar
    commentc    = '--'
    opentokens  = ('delimiter',)
    opentags    = {'(': ')', '[': ']', '{': '}'}
    closetokens = ('delimiter',)
    closetags   = {')': '(', ']': '[', '}': '{'}
    colors      = {}
    _bindings   = {
        'close-paren':      (')',),
        'close-brace':      ('}',),
        'close-bracket':    (']',),
    }

def install(*args):
    Scala.install(*args)