prelim haskell support

--HG--
branch : pmacs2

application.py

@@ -128,7 +128,7 @@ class Application(object):
                  'make', 'mini', 'mutt', 'nasm', 'ocaml', 'perl', 'python',
                  'replace', 'rst', 'scheme', 'search', 'sh', 'sql', 'tt',
                  'text', 'text2', 'which', 'xml', 'cheetah', 'colortext',
-                 'latex', 'insertmini', 'conf')
+                 'latex', 'insertmini', 'conf', 'haskell')
         for name in names:
             exec("import mode.%s; mode.%s.install(self)" % (name, name))
 

mode/haskell.py

@@ -0,0 +1,59 @@
+import commands, os.path, sets, string, sys, traceback
+import color, completer, default, mode, method, regex, tab
+from point import Point
+from lex import Grammar, PatternRule, RegionRule, OverridePatternRule, NocasePatternRule
+
+class CommentGrammar(Grammar):
+    rules = [
+        RegionRule(r'comment', r'{-', mode.lisp.StringGrammar, r'-}'),
+    ]
+
+class StringGrammar(Grammar):
+    rules = [
+        RegionRule(r'gap', r'\\ *\n$', Grammar, r'^ *[^ \n]'),
+        NocasePatternRule(r'escaped', r'\\(?:NUL|SOH|STX|ETX|EOT|ENQ|ACK|BEL|BS|HT|LF|VT|FF|CR|SO|SI|DLE|DC1|DC2|DC3|DC4|NAK|SYN|ETB|CAN|EM|SUB|ESC|FS|GS|RS|US|SP|DEL|[&abfnrtv\\"\']|\^[a-z]|\d{1,3}|o[0-7]{0,3}|x(?:[0-9a-f]){0,2})'),
+    ]
+
+class HaskellGrammar(Grammar):
+    rules = [
+        PatternRule(r'comment', r'--.*$'),
+        RegionRule(r'comment', r'{-', CommentGrammar, r'-}'),
+        RegionRule(r'hs_string', r'"', StringGrammar, r'"'),
+        PatternRule(r'hs_reserved', r"(?:_|where|type|then|of|newtype|module|let|instance|infixr|infixl|infix|in|import|if|else|do|deriving|default|data|class|case)(?![a-zA-Z0-9_'])"),
+        PatternRule(r'hs_declaration', r"^[a-z_][a-zA-Z0-9_']*"),
+        PatternRule(r'hs_variable', r"[a-z_][a-zA-Z0-9_']*"),
+        PatternRule(r'hs_constructor', r"[A-Z][a-zA-Z0-9_']*"),
+        #PatternRule(r'hs_operator', r'(?:=>|=|::|\||->|==|=)'),
+        PatternRule(r'hs_operator', r'@|!|>@>|>>=|>>|=>|::|->|;|<-|\\\\|\.\.|!!|:|\+\+|\||\.|\\|>=|>|/=|==|<=|<|\|\||&&|\^\^|\*\*|\^|/|\*|-|\+|='),
+    ]
+
+class Haskell(mode.Fundamental):
+    modename    = 'Haskell'
+    extensions  = ['.hs']
+    tabwidth    = 4
+    #tabbercls   = mode.lisp.LispTabber
+    grammar     = HaskellGrammar
+    #opentokens  = ('delimiter',)
+    #opentags    = {'(': ')'}
+    #closetokens = ('delimiter',)
+    #closetags   = {')': '('}
+    colors      = {
+        'hs_reserved':         ('cyan', 'default'),
+        'hs_constructor':      ('magenta', 'default'),
+        'hs_declaration':      ('blue', 'default'),
+        'hs_operator':         ('green', 'default'),
+        'hs_string.start':     ('green', 'default'),
+        'hs_string.null':      ('green', 'default'),
+        'hs_string.end':       ('green', 'default'),
+        'hs_string.escaped':   ('magenta', 'default'),
+        'hs_string.gap.start': ('red', 'default'),
+        'hs_string.gap.null':  ('red', 'default'),
+        'hs_string.gap.end':   ('red', 'default'),
+    }
+    def __init__(self, w):
+        mode.Fundamental.__init__(self, w)
+        #self.add_bindings('close-paren', (')',))
+        #self.add_bindings('close-brace', ('}',))
+        #self.add_bindings('close-bracket', (']',))
+
+install = Haskell.install