add uxn/tal mode

--HG--
branch : pmacs2

application.py

@@ -1,4 +1,4 @@
-#!/usr/local/bin/python3
+#!/usr/bin/env python3
 
 import curses
 from getpass import getpass
@@ -179,7 +179,7 @@ class Application(object):
             'awk', 'shell', 'shellmini', 'fstab', 'yacc', 'pipe', 'mbox',
             'error', 'lua', 'lily', 'forth', 'ebnf', 'colortest', 'go',
             'inform6', 'scala', 'markdown', 'roy', 'twine', 'idris', 'rust',
-            'bosatsu',
+            'bosatsu', 'tal',
         )
         for name in names:
             exec("import mode.%s; mode.%s.install(self)" % (name, name))

mode/tal.py

@@ -0,0 +1,79 @@
+from mode import Fundamental
+from lex import Grammar, PatternRule, RegionRule
+
+class TalGrammar(Grammar):
+    rules = [
+        PatternRule('spaces', '[ \t]+'),
+        RegionRule('comment', r'\(', Grammar, '\)'),
+        PatternRule('delimiter', r'[\[\]{}]'),
+        PatternRule('tal.inst', r'(BRK|LIT|INC|POP|DUP|NIP|SWP|OVR|ROT|EQU|NEQ|GTH|LTH|JMP|JCN|JSR|STH|LDZ|STZ|LDR|STR|LDA|STA|DEI|DEO|ADD|SUB|MUL|DIV|AND|ORA|EOR|SFT)2?k?r?'), # instructions
+        PatternRule('tal.defmacro', r'%[^ ]+'), # macro-define
+        PatternRule('tal.pad', r'\|[^ ]+'), # pad (absolute)
+        PatternRule('tal.pad', r'\$[^ ]+'), # pad (relative)
+        PatternRule('tal.deflabel', r'@[^ ]+'), # label-define
+        PatternRule('tal.defsublabel', r'&[^ ]+'), # sublabel-define
+        PatternRule('tal.spacer', r'/[^ ]+'), # sublabel-spacer
+        PatternRule('tal.hex', r'#[0-9a-fA-F]+'), # literal hex
+        PatternRule('tal.addr', r'\.[^/ ]+'), # little addr (zero page)
+        PatternRule('tal.addr', r',[^/ ]+'), # little addr (relative)
+        PatternRule('tal.addr', r';[^/ ]+'), # little addr (absolute)
+        PatternRule('tal.addr', r':[^/ ]+'), # raw addr
+        PatternRule('tal.addr', r'\'[^/ ]+'), # raw char
+        PatternRule('tal.addr', r'\"[^/ ]+'), # raw word
+        PatternRule('tal.word', r'[^ ]+'),
+        PatternRule('eol', '\n'),
+    ]
+
+# white is for delimiters, operators, numbers
+default = ('default', 'default')
+
+# magenta is for keywords/builtins
+lo_magenta = ('magenta202', 'default')
+hi_magenta = ('magenta414', 'default')
+
+# red is for comments
+lo_red = ('red300', 'default')
+hi_red = ('red511', 'default')
+
+# orange is for macro definitions, headers and constants
+hi_orange = ('yellow531', 'default')
+lo_orange = ('yellow520', 'default')
+
+# yellow is for parts of macros
+hi_yellow = ('yellow551', 'default')
+lo_yellow = ('yellow330', 'default')
+
+# green is for strings and characters
+lo_green = ('green030', 'default')
+hi_green = ('green050', 'default')
+
+# cyan is for types
+lo_cyan = ('cyan033', 'default')
+hi_cyan = ('cyan155', 'default')
+
+# blue is definitions, functions and some macros
+lo_blue = ('blue113', 'default')
+hi_blue = ('blue225', 'default')
+
+class Tal(Fundamental):
+    name       = 'tal'
+    extensions = ['.tal']
+    grammar    = TalGrammar
+    colors     = {
+        'tal.addr':        hi_cyan,
+        'tal.defmacro':    hi_blue,
+        'tal.addr':        hi_yellow,
+        'tal.inst':        hi_magenta,
+        'tal.deflabel':    hi_blue,
+        'tal.defsublabel': hi_cyan,
+        'tal.hex':         hi_green,
+        'tal.pad':         hi_orange,
+        'tal.spacer':      hi_orange,
+    }
+    _bindings = {
+        'close-paren':   (')',),
+        'close-brace':   ('}',),
+        'close-bracket': (']',),
+    }
+
+install = Tal.install