85 lines
4.0 KiB
Python
85 lines
4.0 KiB
Python
import color, mode, tab
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from lex import Grammar, PatternRule, RegionRule
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from point import Point
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from mode.python import StringGrammar
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class JavascriptGrammar(Grammar):
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rules = [
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PatternRule(r'comment', r'//.*$'),
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RegionRule(r'comment', '/\*', Grammar, '\*/'),
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PatternRule(r'continuation', r'\\(?= *$)'),
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PatternRule(r'js_function', r"(?<=function )[a-zA-Z_][a-zA-Z0-9_]*"),
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PatternRule(r'js_class', r"(?<=class )[a-zA-Z_][a-zA-Z0-9_]*"),
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PatternRule(r'js_reserved', r'(?:as|break|case|catch|class|const|continue|default|delete|do|else|export|extends|false|finally|for|function|if|import|in|instanceof|is|namespace|new|null|package|private|public|return|super|switch|this|throw|true|try|typeof|use|var|void|while|with)(?![a-zA-Z0-9_])'),
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PatternRule(r'js_reserved', r'(?:abstract|debugger|enum|goto|implements|interface|native|protected|synchronized|throws|transient|volatile)(?![a-zA-Z0-9_])'),
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PatternRule(r'js_nonreserved', r'(?:get|include|set)(?![a-zA-Z0-9_])'),
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PatternRule(r"method", r"(?<=\.)[a-zA-Z_][a-zA-Z0-9_]*(?= *\()"),
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PatternRule(r'identifier', r"[a-zA-Z_][a-zA-Z0-9_]*"),
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PatternRule(r'integer', r"(?:0|[1-9][0-9]*|0[0-7]+|0[xX][0-9a-fA-F]+)[lL]?"),
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PatternRule(r'float', r"[0-9]+\.[0-9]*|\.[0-9]+|(?:[0-9]|[0-9]+\.[0-9]*|\.[0-9]+)[eE][\+-]?[0-9]+"),
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# fucking javascript!
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# their lexer grammar requires one-token look-behind in order to know
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# whether a "/" starts a literal regex, or is part of a mathematical
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# expression/assignment. so for now we will require either a space or $
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# after / in order to *not* treat it as a regex. dammit!
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PatternRule(r'eol', r'\n'),
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PatternRule(r'spaces', r' +'),
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PatternRule(r'delimiter', r'%=|&&=|&=|\(|\)|\*=|\+=|,|-=|\.{3}|\.|/=(?= |$)|::|:|;|<<=|>>=|>>>=|\?|\[|\]|^=|^^=|\{|\}|\|=|\|\|='),
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PatternRule(r'operator', r'!==|!=|!|%|&&|&|\*|\+\+|\+|--|-|/(?= |$)|<<=|<<|<=|<|===|==|=|>>>=|>>>|>>=|>>|>=|>|\\|\|\|'),
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RegionRule('js_regex', "/", StringGrammar, "/"),
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RegionRule('string', "'", StringGrammar, "'"),
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RegionRule('string', '"', StringGrammar, '"'),
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]
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class JavascriptTabber(tab.StackTabber):
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def is_base(self, y):
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if y == 0:
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return True
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highlighter = self.mode.window.buffer.highlights[self.mode.name()]
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if not highlighter.tokens[y]:
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return False
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t = highlighter.tokens[y][0]
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return t.name == 'reserved' and t.string == 'function'
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def _handle_other_token(self, currlvl, y, i):
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w = self.mode.tabwidth
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token = self.get_token(y, i)
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fqname = token.fqname()
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if token.name == 'operator' and token.string == '=':
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self._opt_append("cont", currlvl + w)
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elif token.name == 'delimiter' and token.string == ";":
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self._opt_pop("cont")
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return currlvl
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class Javascript(mode.Fundamental):
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modename = 'Javascript'
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extensions = ['.js']
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grammar = JavascriptGrammar
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tabbercls = JavascriptTabber
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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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'js_function': ('blue', 'default', 'bold'),
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'js_class': ('green', 'default', 'bold'),
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'js_reserved': ('cyan', 'default', 'bold'),
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'js_nonreserved': ('cyan', 'default', 'bold'),
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'js_regex.start': ('cyan', 'default', 'bold'),
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'js_regex.null': ('cyan', 'default', 'bold'),
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'js_regex.octal': ('magenta', 'default', 'bold'),
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'js_regex.escaped': ('magenta', 'default', 'bold'),
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'js_regex.end': ('cyan', 'default', 'bold'),
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}
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def __init__(self, w):
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mode.Fundamental.__init__(self, w)
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self.add_bindings('close-paren', (')',))
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self.add_bindings('close-brace', ('}',))
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self.add_bindings('close-bracket', (']',))
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install = Javascript.install
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