131 lines
4.6 KiB
Python
131 lines
4.6 KiB
Python
from tab import StackTabber2
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from mode import Fundamental
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from lex import Grammar, PatternRule, RegionRule, PatternMatchRule
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from mode.xml import XMLGrammar
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from mode.pipe import Pipe
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from method.shell import Interact
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chr1 = '[a-zA-Z_]'
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chr2 = '[a-zA-Z_0-9]'
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word = chr1 + chr2 + '*'
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class NestedCommentGrammar(Grammar): pass
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NestedCommentGrammar.rules = [
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RegionRule('comment', r'/\*', NestedCommentGrammar, r'\*/'),
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PatternRule('data', r'(?:[^\*]|\*(?!/))+'),
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]
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class StringGrammar(Grammar):
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rules = [
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PatternRule('escaped', r"\\u[0-9A-Fa-f]{4}|\\[0-7]{1,3}|\\[btnfr\"'\\]"),
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PatternRule('data', r'[^\\"]+'),
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]
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class ScalaGrammar(Grammar):
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rules = [
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PatternRule('scala.comment', '//.*$'),
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RegionRule('scala.comment', r'/\*', NestedCommentGrammar, r'\*/'),
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PatternRule('delimiter', r'(?:;|{|}|\[|\]|\(|\)|,|\.|<(?![a-zA-Z_])|>|:|/|\+|-|\*|=)'),
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PatternRule('spaces', r'(?:\t| )+'),
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PatternRule('eol', r'\n'),
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PatternRule('scala.def', '(?<=(?<![a-zA-Z0-9_])def )[a-zA-Z_][a-zA-Z0-9_]*'),
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PatternRule('scala.class', '(?<=(?<![a-zA-Z0-9_])class )[a-zA-Z_][a-zA-Z0-9_]*'),
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PatternRule('scala.class', '(?<=(?<![a-zA-Z0-9_])object )[a-zA-Z_][a-zA-Z0-9_]*'),
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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),
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PatternRule('scala.integer', '-?(?:0|[1-9])[0-9]*[Ll]?'),
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PatternRule('scala.integer', '-?0x[0-9A-Fa-f]+[Ll]?'),
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PatternRule('scala.integer', '-?0[0-7]+[Ll]?'),
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PatternRule('scala.float', r'-?[0-9]+\.[0-9]*'), # FIXME
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PatternRule('scala.bool', '(?:true|false)(?![a-zA-Z0-9_])'),
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PatternRule('scala.char', r"'(?:[^'\\]|\\u[0-9A-Fa-f]{4}|\\[0-7]{1,3}|\\[btnfr\"'\\])'"),
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RegionRule('scala.string', '"', StringGrammar, '"'),
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PatternRule('scala.symbol', "'[a-zA-Z_][a-zA-Z0-9_]*"),
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PatternRule('scala.annotation', '@[a-zA-Z_][a-zA-Z0-9_]*'),
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PatternRule('scala.bareword', '[a-zA-Z_][a-zA-Z0-9_]*'),
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PatternRule('scala.null', 'null'),
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RegionRule('scala.inline', r'(?:^| )(?=<[a-zA-Z_])', XMLGrammar, '^[ \t]*$'),
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]
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class ScalaTabber(StackTabber2):
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open_tokens = {'delimiter': {'{': '}', '(': ')', '[': ']'}}
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close_tokens = {'delimiter': {'}': '{', ')': '(', ']': '['}}
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control_tokens = {'scala.reserved': set(('if', 'else', 'while', 'do', 'for'))}
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end_at_eof = True
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start_free_tokens = {'string.start': 'string.end'}
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end_free_tokens = {'string.end': 'string.start'}
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is_ignored_tokens = set(('spaces', 'eol', 'comment', 'comment.start',
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'comment.data', 'comment.null', 'comment.end'))
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is_indent_tokens = set(('spaces',))
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def _is_base(self, y):
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# the first line is always safe
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if y == 0: return True
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# if there are no tokens we don't really have any info
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tokens = self._get_tokens(y)
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if not tokens: return False
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# if it looks like a top-level class, object or function, then say ok
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t = tokens[0]
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if t.fqmatchs('scala.reserved', ('class', 'object', 'def')):
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return True
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# the default is to assume no
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return False
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class ScalaStart(Interact):
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args = []
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modename = 'scalapipe'
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reuse = True
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def _execute(self, w, **vargs):
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Interact._execute(self, w, bname='*Scala*', cmd='scala')
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class Scala(Fundamental):
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name = 'Scala'
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extensions = ['.scala']
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tabwidth = 2
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tabbercls = ScalaTabber
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grammar = ScalaGrammar
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commentc = '//'
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actions = [ScalaStart]
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opentokens = ('delimiter',)
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opentags = {'(': ')', '[': ']', '{': '}'}
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closetokens = ('delimiter',)
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closetags = {')': '(', ']': '[', '}': '{'}
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colors = {
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'scala.annotation': ('magenta', 'default'),
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'scala.bool': ('magenta', 'default'),
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'scala.null': ('magenta', 'default'),
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'scala.integer': ('default', 'default'),
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'scala.float': ('default', 'default'),
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'scala.bareword': ('default', 'default'),
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'scala.class': ('yellow', 'default'),
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'scala.def': ('blue', 'default'),
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}
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_bindings = {
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'close-paren': (')',),
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'close-brace': ('}',),
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'close-bracket': (']',),
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}
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class ScalaPipe(Pipe):
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name = 'scalapipe'
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grammar = ScalaGrammar
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def install(*args):
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Scala.install(*args)
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ScalaPipe.install(*args)
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