518 lines
22 KiB
Python
518 lines
22 KiB
Python
# -*- coding: utf-8 -*-
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"""
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pygments.lexers.ruby
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~~~~~~~~~~~~~~~~~~~~
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Lexers for Ruby and related languages.
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:copyright: Copyright 2006-2014 by the Pygments team, see AUTHORS.
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:license: BSD, see LICENSE for details.
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"""
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import re
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from pygments.lexer import Lexer, RegexLexer, ExtendedRegexLexer, include, \
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bygroups, default, LexerContext, do_insertions, words
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from pygments.token import Text, Comment, Operator, Keyword, Name, String, \
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Number, Punctuation, Error, Generic
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from pygments.util import shebang_matches
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__all__ = ['RubyLexer', 'RubyConsoleLexer', 'FancyLexer']
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line_re = re.compile('.*?\n')
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RUBY_OPERATORS = (
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'*', '**', '-', '+', '-@', '+@', '/', '%', '&', '|', '^', '`', '~',
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'[]', '[]=', '<<', '>>', '<', '<>', '<=>', '>', '>=', '==', '==='
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)
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class RubyLexer(ExtendedRegexLexer):
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"""
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For `Ruby <http://www.ruby-lang.org>`_ source code.
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"""
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name = 'Ruby'
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aliases = ['rb', 'ruby', 'duby']
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filenames = ['*.rb', '*.rbw', 'Rakefile', '*.rake', '*.gemspec',
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'*.rbx', '*.duby']
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mimetypes = ['text/x-ruby', 'application/x-ruby']
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flags = re.DOTALL | re.MULTILINE
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def heredoc_callback(self, match, ctx):
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# okay, this is the hardest part of parsing Ruby...
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# match: 1 = <<-?, 2 = quote? 3 = name 4 = quote? 5 = rest of line
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start = match.start(1)
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yield start, Operator, match.group(1) # <<-?
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yield match.start(2), String.Heredoc, match.group(2) # quote ", ', `
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yield match.start(3), Name.Constant, match.group(3) # heredoc name
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yield match.start(4), String.Heredoc, match.group(4) # quote again
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heredocstack = ctx.__dict__.setdefault('heredocstack', [])
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outermost = not bool(heredocstack)
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heredocstack.append((match.group(1) == '<<-', match.group(3)))
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ctx.pos = match.start(5)
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ctx.end = match.end(5)
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# this may find other heredocs
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for i, t, v in self.get_tokens_unprocessed(context=ctx):
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yield i, t, v
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ctx.pos = match.end()
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if outermost:
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# this is the outer heredoc again, now we can process them all
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for tolerant, hdname in heredocstack:
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lines = []
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for match in line_re.finditer(ctx.text, ctx.pos):
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if tolerant:
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check = match.group().strip()
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else:
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check = match.group().rstrip()
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if check == hdname:
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for amatch in lines:
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yield amatch.start(), String.Heredoc, amatch.group()
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yield match.start(), Name.Constant, match.group()
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ctx.pos = match.end()
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break
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else:
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lines.append(match)
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else:
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# end of heredoc not found -- error!
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for amatch in lines:
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yield amatch.start(), Error, amatch.group()
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ctx.end = len(ctx.text)
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del heredocstack[:]
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def gen_rubystrings_rules():
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def intp_regex_callback(self, match, ctx):
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yield match.start(1), String.Regex, match.group(1) # begin
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nctx = LexerContext(match.group(3), 0, ['interpolated-regex'])
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for i, t, v in self.get_tokens_unprocessed(context=nctx):
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yield match.start(3)+i, t, v
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yield match.start(4), String.Regex, match.group(4) # end[mixounse]*
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ctx.pos = match.end()
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def intp_string_callback(self, match, ctx):
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yield match.start(1), String.Other, match.group(1)
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nctx = LexerContext(match.group(3), 0, ['interpolated-string'])
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for i, t, v in self.get_tokens_unprocessed(context=nctx):
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yield match.start(3)+i, t, v
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yield match.start(4), String.Other, match.group(4) # end
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ctx.pos = match.end()
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states = {}
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states['strings'] = [
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# easy ones
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(r'\:@{0,2}[a-zA-Z_]\w*[!?]?', String.Symbol),
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(words(RUBY_OPERATORS, prefix=r'\:@{0,2}'), String.Symbol),
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(r":'(\\\\|\\'|[^'])*'", String.Symbol),
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(r"'(\\\\|\\'|[^'])*'", String.Single),
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(r':"', String.Symbol, 'simple-sym'),
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(r'([a-zA-Z_]\w*)(:)(?!:)',
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bygroups(String.Symbol, Punctuation)), # Since Ruby 1.9
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(r'"', String.Double, 'simple-string'),
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(r'(?<!\.)`', String.Backtick, 'simple-backtick'),
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]
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# double-quoted string and symbol
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for name, ttype, end in ('string', String.Double, '"'), \
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('sym', String.Symbol, '"'), \
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('backtick', String.Backtick, '`'):
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states['simple-'+name] = [
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include('string-intp-escaped'),
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(r'[^\\%s#]+' % end, ttype),
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(r'[\\#]', ttype),
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(end, ttype, '#pop'),
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]
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# braced quoted strings
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for lbrace, rbrace, bracecc, name in \
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('\\{', '\\}', '{}', 'cb'), \
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('\\[', '\\]', '\\[\\]', 'sb'), \
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('\\(', '\\)', '()', 'pa'), \
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('<', '>', '<>', 'ab'):
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states[name+'-intp-string'] = [
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(r'\\[\\' + bracecc + ']', String.Other),
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(lbrace, String.Other, '#push'),
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(rbrace, String.Other, '#pop'),
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include('string-intp-escaped'),
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(r'[\\#' + bracecc + ']', String.Other),
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(r'[^\\#' + bracecc + ']+', String.Other),
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]
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states['strings'].append((r'%[QWx]?' + lbrace, String.Other,
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name+'-intp-string'))
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states[name+'-string'] = [
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(r'\\[\\' + bracecc + ']', String.Other),
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(lbrace, String.Other, '#push'),
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(rbrace, String.Other, '#pop'),
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(r'[\\#' + bracecc + ']', String.Other),
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(r'[^\\#' + bracecc + ']+', String.Other),
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]
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states['strings'].append((r'%[qsw]' + lbrace, String.Other,
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name+'-string'))
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states[name+'-regex'] = [
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(r'\\[\\' + bracecc + ']', String.Regex),
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(lbrace, String.Regex, '#push'),
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(rbrace + '[mixounse]*', String.Regex, '#pop'),
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include('string-intp'),
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(r'[\\#' + bracecc + ']', String.Regex),
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(r'[^\\#' + bracecc + ']+', String.Regex),
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]
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states['strings'].append((r'%r' + lbrace, String.Regex,
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name+'-regex'))
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# these must come after %<brace>!
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states['strings'] += [
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# %r regex
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(r'(%r([\W_]))((?:\\\2|(?!\2).)*)(\2[mixounse]*)',
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intp_regex_callback),
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# regular fancy strings with qsw
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(r'%[qsw]([\W_])((?:\\\1|(?!\1).)*)\1', String.Other),
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(r'(%[QWx]([\W_]))((?:\\\2|(?!\2).)*)(\2)',
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intp_string_callback),
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# special forms of fancy strings after operators or
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# in method calls with braces
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(r'(?<=[-+/*%=<>&!^|~,(])(\s*)(%([\t ])(?:(?:\\\3|(?!\3).)*)\3)',
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bygroups(Text, String.Other, None)),
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# and because of fixed width lookbehinds the whole thing a
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# second time for line startings...
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(r'^(\s*)(%([\t ])(?:(?:\\\3|(?!\3).)*)\3)',
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bygroups(Text, String.Other, None)),
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# all regular fancy strings without qsw
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(r'(%([^a-zA-Z0-9\s]))((?:\\\2|(?!\2).)*)(\2)',
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intp_string_callback),
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]
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return states
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tokens = {
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'root': [
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(r'#.*?$', Comment.Single),
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(r'=begin\s.*?\n=end.*?$', Comment.Multiline),
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# keywords
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(words((
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'BEGIN', 'END', 'alias', 'begin', 'break', 'case', 'defined?',
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'do', 'else', 'elsif', 'end', 'ensure', 'for', 'if', 'in', 'next', 'redo',
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'rescue', 'raise', 'retry', 'return', 'super', 'then', 'undef',
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'unless', 'until', 'when', 'while', 'yield'), suffix=r'\b'),
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Keyword),
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# start of function, class and module names
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(r'(module)(\s+)([a-zA-Z_]\w*'
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r'(?:::[a-zA-Z_]\w*)*)',
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bygroups(Keyword, Text, Name.Namespace)),
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(r'(def)(\s+)', bygroups(Keyword, Text), 'funcname'),
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(r'def(?=[*%&^`~+-/\[<>=])', Keyword, 'funcname'),
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(r'(class)(\s+)', bygroups(Keyword, Text), 'classname'),
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# special methods
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(words((
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'initialize', 'new', 'loop', 'include', 'extend', 'raise', 'attr_reader',
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'attr_writer', 'attr_accessor', 'attr', 'catch', 'throw', 'private',
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'module_function', 'public', 'protected', 'true', 'false', 'nil'),
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suffix=r'\b'),
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Keyword.Pseudo),
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(r'(not|and|or)\b', Operator.Word),
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(words((
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'autoload', 'block_given', 'const_defined', 'eql', 'equal', 'frozen', 'include',
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'instance_of', 'is_a', 'iterator', 'kind_of', 'method_defined', 'nil',
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'private_method_defined', 'protected_method_defined',
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'public_method_defined', 'respond_to', 'tainted'), suffix=r'\?'),
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Name.Builtin),
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(r'(chomp|chop|exit|gsub|sub)!', Name.Builtin),
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(words((
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'Array', 'Float', 'Integer', 'String', '__id__', '__send__', 'abort',
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'ancestors', 'at_exit', 'autoload', 'binding', 'callcc', 'caller',
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'catch', 'chomp', 'chop', 'class_eval', 'class_variables',
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'clone', 'const_defined?', 'const_get', 'const_missing', 'const_set',
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'constants', 'display', 'dup', 'eval', 'exec', 'exit', 'extend', 'fail', 'fork',
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'format', 'freeze', 'getc', 'gets', 'global_variables', 'gsub',
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'hash', 'id', 'included_modules', 'inspect', 'instance_eval',
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'instance_method', 'instance_methods',
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'instance_variable_get', 'instance_variable_set', 'instance_variables',
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'lambda', 'load', 'local_variables', 'loop',
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'method', 'method_missing', 'methods', 'module_eval', 'name',
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'object_id', 'open', 'p', 'print', 'printf', 'private_class_method',
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'private_instance_methods',
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'private_methods', 'proc', 'protected_instance_methods',
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'protected_methods', 'public_class_method',
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'public_instance_methods', 'public_methods',
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'putc', 'puts', 'raise', 'rand', 'readline', 'readlines', 'require',
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'scan', 'select', 'self', 'send', 'set_trace_func', 'singleton_methods', 'sleep',
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'split', 'sprintf', 'srand', 'sub', 'syscall', 'system', 'taint',
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'test', 'throw', 'to_a', 'to_s', 'trace_var', 'trap', 'untaint',
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'untrace_var', 'warn'), prefix=r'(?<!\.)', suffix=r'\b'),
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Name.Builtin),
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(r'__(FILE|LINE)__\b', Name.Builtin.Pseudo),
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# normal heredocs
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(r'(?<!\w)(<<-?)(["`\']?)([a-zA-Z_]\w*)(\2)(.*?\n)',
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heredoc_callback),
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# empty string heredocs
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(r'(<<-?)("|\')()(\2)(.*?\n)', heredoc_callback),
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(r'__END__', Comment.Preproc, 'end-part'),
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# multiline regex (after keywords or assignments)
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(r'(?:^|(?<=[=<>~!:])|'
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r'(?<=(?:\s|;)when\s)|'
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r'(?<=(?:\s|;)or\s)|'
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r'(?<=(?:\s|;)and\s)|'
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r'(?<=(?:\s|;|\.)index\s)|'
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r'(?<=(?:\s|;|\.)scan\s)|'
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r'(?<=(?:\s|;|\.)sub\s)|'
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r'(?<=(?:\s|;|\.)sub!\s)|'
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r'(?<=(?:\s|;|\.)gsub\s)|'
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r'(?<=(?:\s|;|\.)gsub!\s)|'
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r'(?<=(?:\s|;|\.)match\s)|'
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r'(?<=(?:\s|;)if\s)|'
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r'(?<=(?:\s|;)elsif\s)|'
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r'(?<=^when\s)|'
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r'(?<=^index\s)|'
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r'(?<=^scan\s)|'
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r'(?<=^sub\s)|'
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r'(?<=^gsub\s)|'
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r'(?<=^sub!\s)|'
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r'(?<=^gsub!\s)|'
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r'(?<=^match\s)|'
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r'(?<=^if\s)|'
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r'(?<=^elsif\s)'
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r')(\s*)(/)', bygroups(Text, String.Regex), 'multiline-regex'),
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# multiline regex (in method calls or subscripts)
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(r'(?<=\(|,|\[)/', String.Regex, 'multiline-regex'),
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# multiline regex (this time the funny no whitespace rule)
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(r'(\s+)(/)(?![\s=])', bygroups(Text, String.Regex),
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'multiline-regex'),
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# lex numbers and ignore following regular expressions which
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# are division operators in fact (grrrr. i hate that. any
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# better ideas?)
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# since pygments 0.7 we also eat a "?" operator after numbers
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# so that the char operator does not work. Chars are not allowed
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# there so that you can use the ternary operator.
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# stupid example:
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# x>=0?n[x]:""
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(r'(0_?[0-7]+(?:_[0-7]+)*)(\s*)([/?])?',
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bygroups(Number.Oct, Text, Operator)),
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(r'(0x[0-9A-Fa-f]+(?:_[0-9A-Fa-f]+)*)(\s*)([/?])?',
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bygroups(Number.Hex, Text, Operator)),
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(r'(0b[01]+(?:_[01]+)*)(\s*)([/?])?',
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bygroups(Number.Bin, Text, Operator)),
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(r'([\d]+(?:_\d+)*)(\s*)([/?])?',
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bygroups(Number.Integer, Text, Operator)),
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# Names
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(r'@@[a-zA-Z_]\w*', Name.Variable.Class),
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(r'@[a-zA-Z_]\w*', Name.Variable.Instance),
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(r'\$\w+', Name.Variable.Global),
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(r'\$[!@&`\'+~=/\\,;.<>_*$?:"^-]', Name.Variable.Global),
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(r'\$-[0adFiIlpvw]', Name.Variable.Global),
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(r'::', Operator),
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include('strings'),
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# chars
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(r'\?(\\[MC]-)*' # modifiers
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r'(\\([\\abefnrstv#"\']|x[a-fA-F0-9]{1,2}|[0-7]{1,3})|\S)'
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r'(?!\w)',
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String.Char),
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(r'[A-Z]\w+', Name.Constant),
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# this is needed because ruby attributes can look
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# like keywords (class) or like this: ` ?!?
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(words(RUBY_OPERATORS, prefix=r'(\.|::)'),
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bygroups(Operator, Name.Operator)),
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(r'(\.|::)([a-zA-Z_]\w*[!?]?|[*%&^`~+\-/\[<>=])',
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bygroups(Operator, Name)),
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(r'[a-zA-Z_]\w*[!?]?', Name),
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(r'(\[|\]|\*\*|<<?|>>?|>=|<=|<=>|=~|={3}|'
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r'!~|&&?|\|\||\.{1,3})', Operator),
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(r'[-+/*%=<>&!^|~]=?', Operator),
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(r'[(){};,/?:\\]', Punctuation),
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(r'\s+', Text)
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],
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'funcname': [
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(r'\(', Punctuation, 'defexpr'),
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(r'(?:([a-zA-Z_]\w*)(\.))?'
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r'([a-zA-Z_]\w*[!?]?|\*\*?|[-+]@?|'
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r'[/%&|^`~]|\[\]=?|<<|>>|<=?>|>=?|===?)',
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bygroups(Name.Class, Operator, Name.Function), '#pop'),
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default('#pop')
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],
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'classname': [
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(r'\(', Punctuation, 'defexpr'),
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(r'<<', Operator, '#pop'),
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(r'[A-Z_]\w*', Name.Class, '#pop'),
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default('#pop')
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],
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'defexpr': [
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(r'(\))(\.|::)?', bygroups(Punctuation, Operator), '#pop'),
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(r'\(', Operator, '#push'),
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include('root')
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],
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'in-intp': [
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(r'\{', String.Interpol, '#push'),
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(r'\}', String.Interpol, '#pop'),
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include('root'),
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],
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'string-intp': [
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(r'#\{', String.Interpol, 'in-intp'),
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(r'#@@?[a-zA-Z_]\w*', String.Interpol),
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(r'#\$[a-zA-Z_]\w*', String.Interpol)
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],
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'string-intp-escaped': [
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include('string-intp'),
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(r'\\([\\abefnrstv#"\']|x[a-fA-F0-9]{1,2}|[0-7]{1,3})',
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String.Escape)
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],
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'interpolated-regex': [
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include('string-intp'),
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(r'[\\#]', String.Regex),
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(r'[^\\#]+', String.Regex),
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],
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'interpolated-string': [
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include('string-intp'),
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(r'[\\#]', String.Other),
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(r'[^\\#]+', String.Other),
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],
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'multiline-regex': [
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include('string-intp'),
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(r'\\\\', String.Regex),
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(r'\\/', String.Regex),
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(r'[\\#]', String.Regex),
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(r'[^\\/#]+', String.Regex),
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(r'/[mixounse]*', String.Regex, '#pop'),
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],
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'end-part': [
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(r'.+', Comment.Preproc, '#pop')
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]
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}
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tokens.update(gen_rubystrings_rules())
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def analyse_text(text):
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return shebang_matches(text, r'ruby(1\.\d)?')
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class RubyConsoleLexer(Lexer):
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"""
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For Ruby interactive console (**irb**) output like:
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.. sourcecode:: rbcon
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irb(main):001:0> a = 1
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=> 1
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irb(main):002:0> puts a
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1
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=> nil
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"""
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name = 'Ruby irb session'
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aliases = ['rbcon', 'irb']
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mimetypes = ['text/x-ruby-shellsession']
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_prompt_re = re.compile('irb\([a-zA-Z_]\w*\):\d{3}:\d+[>*"\'] '
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'|>> |\?> ')
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def get_tokens_unprocessed(self, text):
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rblexer = RubyLexer(**self.options)
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curcode = ''
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insertions = []
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for match in line_re.finditer(text):
|
|
line = match.group()
|
|
m = self._prompt_re.match(line)
|
|
if m is not None:
|
|
end = m.end()
|
|
insertions.append((len(curcode),
|
|
[(0, Generic.Prompt, line[:end])]))
|
|
curcode += line[end:]
|
|
else:
|
|
if curcode:
|
|
for item in do_insertions(
|
|
insertions, rblexer.get_tokens_unprocessed(curcode)):
|
|
yield item
|
|
curcode = ''
|
|
insertions = []
|
|
yield match.start(), Generic.Output, line
|
|
if curcode:
|
|
for item in do_insertions(
|
|
insertions, rblexer.get_tokens_unprocessed(curcode)):
|
|
yield item
|
|
|
|
|
|
class FancyLexer(RegexLexer):
|
|
"""
|
|
Pygments Lexer For `Fancy <http://www.fancy-lang.org/>`_.
|
|
|
|
Fancy is a self-hosted, pure object-oriented, dynamic,
|
|
class-based, concurrent general-purpose programming language
|
|
running on Rubinius, the Ruby VM.
|
|
|
|
.. versionadded:: 1.5
|
|
"""
|
|
name = 'Fancy'
|
|
filenames = ['*.fy', '*.fancypack']
|
|
aliases = ['fancy', 'fy']
|
|
mimetypes = ['text/x-fancysrc']
|
|
|
|
tokens = {
|
|
# copied from PerlLexer:
|
|
'balanced-regex': [
|
|
(r'/(\\\\|\\/|[^/])*/[egimosx]*', String.Regex, '#pop'),
|
|
(r'!(\\\\|\\!|[^!])*![egimosx]*', String.Regex, '#pop'),
|
|
(r'\\(\\\\|[^\\])*\\[egimosx]*', String.Regex, '#pop'),
|
|
(r'\{(\\\\|\\\}|[^}])*\}[egimosx]*', String.Regex, '#pop'),
|
|
(r'<(\\\\|\\>|[^>])*>[egimosx]*', String.Regex, '#pop'),
|
|
(r'\[(\\\\|\\\]|[^\]])*\][egimosx]*', String.Regex, '#pop'),
|
|
(r'\((\\\\|\\\)|[^)])*\)[egimosx]*', String.Regex, '#pop'),
|
|
(r'@(\\\\|\\@|[^@])*@[egimosx]*', String.Regex, '#pop'),
|
|
(r'%(\\\\|\\%|[^%])*%[egimosx]*', String.Regex, '#pop'),
|
|
(r'\$(\\\\|\\\$|[^$])*\$[egimosx]*', String.Regex, '#pop'),
|
|
],
|
|
'root': [
|
|
(r'\s+', Text),
|
|
|
|
# balanced delimiters (copied from PerlLexer):
|
|
(r's\{(\\\\|\\\}|[^}])*\}\s*', String.Regex, 'balanced-regex'),
|
|
(r's<(\\\\|\\>|[^>])*>\s*', String.Regex, 'balanced-regex'),
|
|
(r's\[(\\\\|\\\]|[^\]])*\]\s*', String.Regex, 'balanced-regex'),
|
|
(r's\((\\\\|\\\)|[^)])*\)\s*', String.Regex, 'balanced-regex'),
|
|
(r'm?/(\\\\|\\/|[^/\n])*/[gcimosx]*', String.Regex),
|
|
(r'm(?=[/!\\{<\[(@%$])', String.Regex, 'balanced-regex'),
|
|
|
|
# Comments
|
|
(r'#(.*?)\n', Comment.Single),
|
|
# Symbols
|
|
(r'\'([^\'\s\[\](){}]+|\[\])', String.Symbol),
|
|
# Multi-line DoubleQuotedString
|
|
(r'"""(\\\\|\\"|[^"])*"""', String),
|
|
# DoubleQuotedString
|
|
(r'"(\\\\|\\"|[^"])*"', String),
|
|
# keywords
|
|
(r'(def|class|try|catch|finally|retry|return|return_local|match|'
|
|
r'case|->|=>)\b', Keyword),
|
|
# constants
|
|
(r'(self|super|nil|false|true)\b', Name.Constant),
|
|
(r'[(){};,/?|:\\]', Punctuation),
|
|
# names
|
|
(words((
|
|
'Object', 'Array', 'Hash', 'Directory', 'File', 'Class', 'String',
|
|
'Number', 'Enumerable', 'FancyEnumerable', 'Block', 'TrueClass',
|
|
'NilClass', 'FalseClass', 'Tuple', 'Symbol', 'Stack', 'Set',
|
|
'FancySpec', 'Method', 'Package', 'Range'), suffix=r'\b'),
|
|
Name.Builtin),
|
|
# functions
|
|
(r'[a-zA-Z](\w|[-+?!=*/^><%])*:', Name.Function),
|
|
# operators, must be below functions
|
|
(r'[-+*/~,<>=&!?%^\[\].$]+', Operator),
|
|
('[A-Z]\w*', Name.Constant),
|
|
('@[a-zA-Z_]\w*', Name.Variable.Instance),
|
|
('@@[a-zA-Z_]\w*', Name.Variable.Class),
|
|
('@@?', Operator),
|
|
('[a-zA-Z_]\w*', Name),
|
|
# numbers - / checks are necessary to avoid mismarking regexes,
|
|
# see comment in RubyLexer
|
|
(r'(0[oO]?[0-7]+(?:_[0-7]+)*)(\s*)([/?])?',
|
|
bygroups(Number.Oct, Text, Operator)),
|
|
(r'(0[xX][0-9A-Fa-f]+(?:_[0-9A-Fa-f]+)*)(\s*)([/?])?',
|
|
bygroups(Number.Hex, Text, Operator)),
|
|
(r'(0[bB][01]+(?:_[01]+)*)(\s*)([/?])?',
|
|
bygroups(Number.Bin, Text, Operator)),
|
|
(r'([\d]+(?:_\d+)*)(\s*)([/?])?',
|
|
bygroups(Number.Integer, Text, Operator)),
|
|
(r'\d+([eE][+-]?[0-9]+)|\d+\.\d+([eE][+-]?[0-9]+)?', Number.Float),
|
|
(r'\d+', Number.Integer)
|
|
]
|
|
}
|