initial rudimentary scala mode

--HG--
branch : pmacs2

application.py

@@ -175,7 +175,7 @@ class Application(object):
             'haskell', 'erlang', 'iperl', 'iperlmini', 'ipython', 'ipythonmini',
             'awk', 'shell', 'shellmini', 'fstab', 'yacc', 'pipe', 'mbox',
             'error', 'lua', 'lily', 'forth', 'ebnf', 'colortest', 'go',
-            'inform6'
+            'inform6', 'scala',
         )
         for name in names:
             exec("import mode.%s; mode.%s.install(self)" % (name, name))

mode/scala.py

@@ -0,0 +1,62 @@
+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)