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534 lines
18 KiB
534 lines
18 KiB
1 week ago
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# -*- coding: utf-8 -*-
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"""
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pygments.lexers.erlang
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~~~~~~~~~~~~~~~~~~~~~~
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Lexers for Erlang.
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:copyright: Copyright 2006-2019 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, bygroups, words, do_insertions, \
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include, default
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from pygments.token import Text, Comment, Operator, Keyword, Name, String, \
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Number, Punctuation, Generic
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__all__ = ['ErlangLexer', 'ErlangShellLexer', 'ElixirConsoleLexer',
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'ElixirLexer']
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line_re = re.compile('.*?\n')
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class ErlangLexer(RegexLexer):
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"""
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For the Erlang functional programming language.
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Blame Jeremy Thurgood (http://jerith.za.net/).
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.. versionadded:: 0.9
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"""
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name = 'Erlang'
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aliases = ['erlang']
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filenames = ['*.erl', '*.hrl', '*.es', '*.escript']
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mimetypes = ['text/x-erlang']
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keywords = (
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'after', 'begin', 'case', 'catch', 'cond', 'end', 'fun', 'if',
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'let', 'of', 'query', 'receive', 'try', 'when',
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)
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builtins = ( # See erlang(3) man page
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'abs', 'append_element', 'apply', 'atom_to_list', 'binary_to_list',
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'bitstring_to_list', 'binary_to_term', 'bit_size', 'bump_reductions',
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'byte_size', 'cancel_timer', 'check_process_code', 'delete_module',
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'demonitor', 'disconnect_node', 'display', 'element', 'erase', 'exit',
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'float', 'float_to_list', 'fun_info', 'fun_to_list',
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'function_exported', 'garbage_collect', 'get', 'get_keys',
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'group_leader', 'hash', 'hd', 'integer_to_list', 'iolist_to_binary',
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'iolist_size', 'is_atom', 'is_binary', 'is_bitstring', 'is_boolean',
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'is_builtin', 'is_float', 'is_function', 'is_integer', 'is_list',
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'is_number', 'is_pid', 'is_port', 'is_process_alive', 'is_record',
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'is_reference', 'is_tuple', 'length', 'link', 'list_to_atom',
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'list_to_binary', 'list_to_bitstring', 'list_to_existing_atom',
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'list_to_float', 'list_to_integer', 'list_to_pid', 'list_to_tuple',
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'load_module', 'localtime_to_universaltime', 'make_tuple', 'md5',
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'md5_final', 'md5_update', 'memory', 'module_loaded', 'monitor',
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'monitor_node', 'node', 'nodes', 'open_port', 'phash', 'phash2',
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'pid_to_list', 'port_close', 'port_command', 'port_connect',
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'port_control', 'port_call', 'port_info', 'port_to_list',
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'process_display', 'process_flag', 'process_info', 'purge_module',
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'put', 'read_timer', 'ref_to_list', 'register', 'resume_process',
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'round', 'send', 'send_after', 'send_nosuspend', 'set_cookie',
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'setelement', 'size', 'spawn', 'spawn_link', 'spawn_monitor',
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'spawn_opt', 'split_binary', 'start_timer', 'statistics',
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'suspend_process', 'system_flag', 'system_info', 'system_monitor',
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'system_profile', 'term_to_binary', 'tl', 'trace', 'trace_delivered',
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'trace_info', 'trace_pattern', 'trunc', 'tuple_size', 'tuple_to_list',
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'universaltime_to_localtime', 'unlink', 'unregister', 'whereis'
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)
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operators = r'(\+\+?|--?|\*|/|<|>|/=|=:=|=/=|=<|>=|==?|<-|!|\?)'
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word_operators = (
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'and', 'andalso', 'band', 'bnot', 'bor', 'bsl', 'bsr', 'bxor',
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'div', 'not', 'or', 'orelse', 'rem', 'xor'
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)
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atom_re = r"(?:[a-z]\w*|'[^\n']*[^\\]')"
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variable_re = r'(?:[A-Z_]\w*)'
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esc_char_re = r'[bdefnrstv\'"\\]'
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esc_octal_re = r'[0-7][0-7]?[0-7]?'
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esc_hex_re = r'(?:x[0-9a-fA-F]{2}|x\{[0-9a-fA-F]+\})'
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esc_ctrl_re = r'\^[a-zA-Z]'
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escape_re = r'(?:\\(?:'+esc_char_re+r'|'+esc_octal_re+r'|'+esc_hex_re+r'|'+esc_ctrl_re+r'))'
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macro_re = r'(?:'+variable_re+r'|'+atom_re+r')'
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base_re = r'(?:[2-9]|[12][0-9]|3[0-6])'
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tokens = {
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'root': [
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(r'\s+', Text),
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(r'%.*\n', Comment),
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(words(keywords, suffix=r'\b'), Keyword),
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(words(builtins, suffix=r'\b'), Name.Builtin),
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(words(word_operators, suffix=r'\b'), Operator.Word),
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(r'^-', Punctuation, 'directive'),
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(operators, Operator),
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(r'"', String, 'string'),
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(r'<<', Name.Label),
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(r'>>', Name.Label),
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('(' + atom_re + ')(:)', bygroups(Name.Namespace, Punctuation)),
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('(?:^|(?<=:))(' + atom_re + r')(\s*)(\()',
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bygroups(Name.Function, Text, Punctuation)),
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(r'[+-]?' + base_re + r'#[0-9a-zA-Z]+', Number.Integer),
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(r'[+-]?\d+', Number.Integer),
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(r'[+-]?\d+.\d+', Number.Float),
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(r'[]\[:_@\".{}()|;,]', Punctuation),
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(variable_re, Name.Variable),
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(atom_re, Name),
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(r'\?'+macro_re, Name.Constant),
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(r'\$(?:'+escape_re+r'|\\[ %]|[^\\])', String.Char),
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(r'#'+atom_re+r'(:?\.'+atom_re+r')?', Name.Label),
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# Erlang script shebang
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(r'\A#!.+\n', Comment.Hashbang),
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# EEP 43: Maps
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# http://www.erlang.org/eeps/eep-0043.html
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(r'#\{', Punctuation, 'map_key'),
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],
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'string': [
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(escape_re, String.Escape),
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(r'"', String, '#pop'),
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(r'~[0-9.*]*[~#+BPWXb-ginpswx]', String.Interpol),
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(r'[^"\\~]+', String),
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(r'~', String),
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],
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'directive': [
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(r'(define)(\s*)(\()('+macro_re+r')',
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bygroups(Name.Entity, Text, Punctuation, Name.Constant), '#pop'),
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(r'(record)(\s*)(\()('+macro_re+r')',
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bygroups(Name.Entity, Text, Punctuation, Name.Label), '#pop'),
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(atom_re, Name.Entity, '#pop'),
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],
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'map_key': [
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include('root'),
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(r'=>', Punctuation, 'map_val'),
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(r':=', Punctuation, 'map_val'),
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(r'\}', Punctuation, '#pop'),
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],
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'map_val': [
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include('root'),
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(r',', Punctuation, '#pop'),
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(r'(?=\})', Punctuation, '#pop'),
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],
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}
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class ErlangShellLexer(Lexer):
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"""
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Shell sessions in erl (for Erlang code).
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.. versionadded:: 1.1
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"""
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name = 'Erlang erl session'
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aliases = ['erl']
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filenames = ['*.erl-sh']
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mimetypes = ['text/x-erl-shellsession']
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_prompt_re = re.compile(r'(?:\([\w@_.]+\))?\d+>(?=\s|\Z)')
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def get_tokens_unprocessed(self, text):
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erlexer = ErlangLexer(**self.options)
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curcode = ''
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insertions = []
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for match in line_re.finditer(text):
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line = match.group()
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m = self._prompt_re.match(line)
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if m is not None:
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end = m.end()
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insertions.append((len(curcode),
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[(0, Generic.Prompt, line[:end])]))
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curcode += line[end:]
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else:
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if curcode:
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for item in do_insertions(insertions,
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erlexer.get_tokens_unprocessed(curcode)):
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yield item
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curcode = ''
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insertions = []
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if line.startswith('*'):
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yield match.start(), Generic.Traceback, line
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else:
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yield match.start(), Generic.Output, line
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if curcode:
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for item in do_insertions(insertions,
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erlexer.get_tokens_unprocessed(curcode)):
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yield item
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def gen_elixir_string_rules(name, symbol, token):
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states = {}
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states['string_' + name] = [
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(r'[^#%s\\]+' % (symbol,), token),
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include('escapes'),
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(r'\\.', token),
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(r'(%s)' % (symbol,), bygroups(token), "#pop"),
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include('interpol')
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]
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return states
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def gen_elixir_sigstr_rules(term, token, interpol=True):
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if interpol:
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return [
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(r'[^#%s\\]+' % (term,), token),
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include('escapes'),
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(r'\\.', token),
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(r'%s[a-zA-Z]*' % (term,), token, '#pop'),
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include('interpol')
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]
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else:
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return [
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(r'[^%s\\]+' % (term,), token),
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(r'\\.', token),
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(r'%s[a-zA-Z]*' % (term,), token, '#pop'),
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]
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class ElixirLexer(RegexLexer):
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"""
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For the `Elixir language <http://elixir-lang.org>`_.
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.. versionadded:: 1.5
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"""
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name = 'Elixir'
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aliases = ['elixir', 'ex', 'exs']
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filenames = ['*.ex', '*.eex', '*.exs']
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mimetypes = ['text/x-elixir']
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KEYWORD = ('fn', 'do', 'end', 'after', 'else', 'rescue', 'catch')
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KEYWORD_OPERATOR = ('not', 'and', 'or', 'when', 'in')
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BUILTIN = (
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'case', 'cond', 'for', 'if', 'unless', 'try', 'receive', 'raise',
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'quote', 'unquote', 'unquote_splicing', 'throw', 'super',
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)
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BUILTIN_DECLARATION = (
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'def', 'defp', 'defmodule', 'defprotocol', 'defmacro', 'defmacrop',
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'defdelegate', 'defexception', 'defstruct', 'defimpl', 'defcallback',
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)
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BUILTIN_NAMESPACE = ('import', 'require', 'use', 'alias')
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CONSTANT = ('nil', 'true', 'false')
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PSEUDO_VAR = ('_', '__MODULE__', '__DIR__', '__ENV__', '__CALLER__')
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OPERATORS3 = (
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'<<<', '>>>', '|||', '&&&', '^^^', '~~~', '===', '!==',
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'~>>', '<~>', '|~>', '<|>',
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)
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OPERATORS2 = (
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'==', '!=', '<=', '>=', '&&', '||', '<>', '++', '--', '|>', '=~',
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'->', '<-', '|', '.', '=', '~>', '<~',
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)
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OPERATORS1 = ('<', '>', '+', '-', '*', '/', '!', '^', '&')
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PUNCTUATION = (
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'\\\\', '<<', '>>', '=>', '(', ')', ':', ';', ',', '[', ']',
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)
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def get_tokens_unprocessed(self, text):
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for index, token, value in RegexLexer.get_tokens_unprocessed(self, text):
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if token is Name:
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if value in self.KEYWORD:
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yield index, Keyword, value
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elif value in self.KEYWORD_OPERATOR:
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yield index, Operator.Word, value
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elif value in self.BUILTIN:
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yield index, Keyword, value
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elif value in self.BUILTIN_DECLARATION:
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yield index, Keyword.Declaration, value
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elif value in self.BUILTIN_NAMESPACE:
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yield index, Keyword.Namespace, value
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elif value in self.CONSTANT:
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yield index, Name.Constant, value
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elif value in self.PSEUDO_VAR:
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yield index, Name.Builtin.Pseudo, value
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else:
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yield index, token, value
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else:
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yield index, token, value
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def gen_elixir_sigil_rules():
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# all valid sigil terminators (excluding heredocs)
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terminators = [
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(r'\{', r'\}', 'cb'),
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(r'\[', r'\]', 'sb'),
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(r'\(', r'\)', 'pa'),
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(r'<', r'>', 'ab'),
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(r'/', r'/', 'slas'),
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(r'\|', r'\|', 'pipe'),
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('"', '"', 'quot'),
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("'", "'", 'apos'),
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]
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# heredocs have slightly different rules
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triquotes = [(r'"""', 'triquot'), (r"'''", 'triapos')]
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token = String.Other
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states = {'sigils': []}
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for term, name in triquotes:
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states['sigils'] += [
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(r'(~[a-z])(%s)' % (term,), bygroups(token, String.Heredoc),
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(name + '-end', name + '-intp')),
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(r'(~[A-Z])(%s)' % (term,), bygroups(token, String.Heredoc),
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(name + '-end', name + '-no-intp')),
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]
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states[name + '-end'] = [
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(r'[a-zA-Z]+', token, '#pop'),
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default('#pop'),
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]
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states[name + '-intp'] = [
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(r'^\s*' + term, String.Heredoc, '#pop'),
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include('heredoc_interpol'),
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]
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states[name + '-no-intp'] = [
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(r'^\s*' + term, String.Heredoc, '#pop'),
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include('heredoc_no_interpol'),
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]
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for lterm, rterm, name in terminators:
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states['sigils'] += [
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|
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(r'~[a-z]' + lterm, token, name + '-intp'),
|
||
|
|
(r'~[A-Z]' + lterm, token, name + '-no-intp'),
|
||
|
|
]
|
||
|
|
states[name + '-intp'] = gen_elixir_sigstr_rules(rterm, token)
|
||
|
|
states[name + '-no-intp'] = \
|
||
|
|
gen_elixir_sigstr_rules(rterm, token, interpol=False)
|
||
|
|
|
||
|
|
return states
|
||
|
|
|
||
|
|
op3_re = "|".join(re.escape(s) for s in OPERATORS3)
|
||
|
|
op2_re = "|".join(re.escape(s) for s in OPERATORS2)
|
||
|
|
op1_re = "|".join(re.escape(s) for s in OPERATORS1)
|
||
|
|
ops_re = r'(?:%s|%s|%s)' % (op3_re, op2_re, op1_re)
|
||
|
|
punctuation_re = "|".join(re.escape(s) for s in PUNCTUATION)
|
||
|
|
alnum = r'\w'
|
||
|
|
name_re = r'(?:\.\.\.|[a-z_]%s*[!?]?)' % alnum
|
||
|
|
modname_re = r'[A-Z]%(alnum)s*(?:\.[A-Z]%(alnum)s*)*' % {'alnum': alnum}
|
||
|
|
complex_name_re = r'(?:%s|%s|%s)' % (name_re, modname_re, ops_re)
|
||
|
|
special_atom_re = r'(?:\.\.\.|<<>>|%\{\}|%|\{\})'
|
||
|
|
|
||
|
|
long_hex_char_re = r'(\\x\{)([\da-fA-F]+)(\})'
|
||
|
|
hex_char_re = r'(\\x[\da-fA-F]{1,2})'
|
||
|
|
escape_char_re = r'(\\[abdefnrstv])'
|
||
|
|
|
||
|
|
tokens = {
|
||
|
|
'root': [
|
||
|
|
(r'\s+', Text),
|
||
|
|
(r'#.*$', Comment.Single),
|
||
|
|
|
||
|
|
# Various kinds of characters
|
||
|
|
(r'(\?)' + long_hex_char_re,
|
||
|
|
bygroups(String.Char,
|
||
|
|
String.Escape, Number.Hex, String.Escape)),
|
||
|
|
(r'(\?)' + hex_char_re,
|
||
|
|
bygroups(String.Char, String.Escape)),
|
||
|
|
(r'(\?)' + escape_char_re,
|
||
|
|
bygroups(String.Char, String.Escape)),
|
||
|
|
(r'\?\\?.', String.Char),
|
||
|
|
|
||
|
|
# '::' has to go before atoms
|
||
|
|
(r':::', String.Symbol),
|
||
|
|
(r'::', Operator),
|
||
|
|
|
||
|
|
# atoms
|
||
|
|
(r':' + special_atom_re, String.Symbol),
|
||
|
|
(r':' + complex_name_re, String.Symbol),
|
||
|
|
(r':"', String.Symbol, 'string_double_atom'),
|
||
|
|
(r":'", String.Symbol, 'string_single_atom'),
|
||
|
|
|
||
|
|
# [keywords: ...]
|
||
|
|
(r'(%s|%s)(:)(?=\s|\n)' % (special_atom_re, complex_name_re),
|
||
|
|
bygroups(String.Symbol, Punctuation)),
|
||
|
|
|
||
|
|
# @attributes
|
||
|
|
(r'@' + name_re, Name.Attribute),
|
||
|
|
|
||
|
|
# identifiers
|
||
|
|
(name_re, Name),
|
||
|
|
(r'(%%?)(%s)' % (modname_re,), bygroups(Punctuation, Name.Class)),
|
||
|
|
|
||
|
|
# operators and punctuation
|
||
|
|
(op3_re, Operator),
|
||
|
|
(op2_re, Operator),
|
||
|
|
(punctuation_re, Punctuation),
|
||
|
|
(r'&\d', Name.Entity), # anon func arguments
|
||
|
|
(op1_re, Operator),
|
||
|
|
|
||
|
|
# numbers
|
||
|
|
(r'0b[01]+', Number.Bin),
|
||
|
|
(r'0o[0-7]+', Number.Oct),
|
||
|
|
(r'0x[\da-fA-F]+', Number.Hex),
|
||
|
|
(r'\d(_?\d)*\.\d(_?\d)*([eE][-+]?\d(_?\d)*)?', Number.Float),
|
||
|
|
(r'\d(_?\d)*', Number.Integer),
|
||
|
|
|
||
|
|
# strings and heredocs
|
||
|
|
(r'"""\s*', String.Heredoc, 'heredoc_double'),
|
||
|
|
(r"'''\s*$", String.Heredoc, 'heredoc_single'),
|
||
|
|
(r'"', String.Double, 'string_double'),
|
||
|
|
(r"'", String.Single, 'string_single'),
|
||
|
|
|
||
|
|
include('sigils'),
|
||
|
|
|
||
|
|
(r'%\{', Punctuation, 'map_key'),
|
||
|
|
(r'\{', Punctuation, 'tuple'),
|
||
|
|
],
|
||
|
|
'heredoc_double': [
|
||
|
|
(r'^\s*"""', String.Heredoc, '#pop'),
|
||
|
|
include('heredoc_interpol'),
|
||
|
|
],
|
||
|
|
'heredoc_single': [
|
||
|
|
(r"^\s*'''", String.Heredoc, '#pop'),
|
||
|
|
include('heredoc_interpol'),
|
||
|
|
],
|
||
|
|
'heredoc_interpol': [
|
||
|
|
(r'[^#\\\n]+', String.Heredoc),
|
||
|
|
include('escapes'),
|
||
|
|
(r'\\.', String.Heredoc),
|
||
|
|
(r'\n+', String.Heredoc),
|
||
|
|
include('interpol'),
|
||
|
|
],
|
||
|
|
'heredoc_no_interpol': [
|
||
|
|
(r'[^\\\n]+', String.Heredoc),
|
||
|
|
(r'\\.', String.Heredoc),
|
||
|
|
(r'\n+', String.Heredoc),
|
||
|
|
],
|
||
|
|
'escapes': [
|
||
|
|
(long_hex_char_re,
|
||
|
|
bygroups(String.Escape, Number.Hex, String.Escape)),
|
||
|
|
(hex_char_re, String.Escape),
|
||
|
|
(escape_char_re, String.Escape),
|
||
|
|
],
|
||
|
|
'interpol': [
|
||
|
|
(r'#\{', String.Interpol, 'interpol_string'),
|
||
|
|
],
|
||
|
|
'interpol_string': [
|
||
|
|
(r'\}', String.Interpol, "#pop"),
|
||
|
|
include('root')
|
||
|
|
],
|
||
|
|
'map_key': [
|
||
|
|
include('root'),
|
||
|
|
(r':', Punctuation, 'map_val'),
|
||
|
|
(r'=>', Punctuation, 'map_val'),
|
||
|
|
(r'\}', Punctuation, '#pop'),
|
||
|
|
],
|
||
|
|
'map_val': [
|
||
|
|
include('root'),
|
||
|
|
(r',', Punctuation, '#pop'),
|
||
|
|
(r'(?=\})', Punctuation, '#pop'),
|
||
|
|
],
|
||
|
|
'tuple': [
|
||
|
|
include('root'),
|
||
|
|
(r'\}', Punctuation, '#pop'),
|
||
|
|
],
|
||
|
|
}
|
||
|
|
tokens.update(gen_elixir_string_rules('double', '"', String.Double))
|
||
|
|
tokens.update(gen_elixir_string_rules('single', "'", String.Single))
|
||
|
|
tokens.update(gen_elixir_string_rules('double_atom', '"', String.Symbol))
|
||
|
|
tokens.update(gen_elixir_string_rules('single_atom', "'", String.Symbol))
|
||
|
|
tokens.update(gen_elixir_sigil_rules())
|
||
|
|
|
||
|
|
|
||
|
|
class ElixirConsoleLexer(Lexer):
|
||
|
|
"""
|
||
|
|
For Elixir interactive console (iex) output like:
|
||
|
|
|
||
|
|
.. sourcecode:: iex
|
||
|
|
|
||
|
|
iex> [head | tail] = [1,2,3]
|
||
|
|
[1,2,3]
|
||
|
|
iex> head
|
||
|
|
1
|
||
|
|
iex> tail
|
||
|
|
[2,3]
|
||
|
|
iex> [head | tail]
|
||
|
|
[1,2,3]
|
||
|
|
iex> length [head | tail]
|
||
|
|
3
|
||
|
|
|
||
|
|
.. versionadded:: 1.5
|
||
|
|
"""
|
||
|
|
|
||
|
|
name = 'Elixir iex session'
|
||
|
|
aliases = ['iex']
|
||
|
|
mimetypes = ['text/x-elixir-shellsession']
|
||
|
|
|
||
|
|
_prompt_re = re.compile(r'(iex|\.{3})((?:\([\w@_.]+\))?\d+|\(\d+\))?> ')
|
||
|
|
|
||
|
|
def get_tokens_unprocessed(self, text):
|
||
|
|
exlexer = ElixirLexer(**self.options)
|
||
|
|
|
||
|
|
curcode = ''
|
||
|
|
in_error = False
|
||
|
|
insertions = []
|
||
|
|
for match in line_re.finditer(text):
|
||
|
|
line = match.group()
|
||
|
|
if line.startswith(u'** '):
|
||
|
|
in_error = True
|
||
|
|
insertions.append((len(curcode),
|
||
|
|
[(0, Generic.Error, line[:-1])]))
|
||
|
|
curcode += line[-1:]
|
||
|
|
else:
|
||
|
|
m = self._prompt_re.match(line)
|
||
|
|
if m is not None:
|
||
|
|
in_error = False
|
||
|
|
end = m.end()
|
||
|
|
insertions.append((len(curcode),
|
||
|
|
[(0, Generic.Prompt, line[:end])]))
|
||
|
|
curcode += line[end:]
|
||
|
|
else:
|
||
|
|
if curcode:
|
||
|
|
for item in do_insertions(
|
||
|
|
insertions, exlexer.get_tokens_unprocessed(curcode)):
|
||
|
|
yield item
|
||
|
|
curcode = ''
|
||
|
|
insertions = []
|
||
|
|
token = Generic.Error if in_error else Generic.Output
|
||
|
|
yield match.start(), token, line
|
||
|
|
if curcode:
|
||
|
|
for item in do_insertions(
|
||
|
|
insertions, exlexer.get_tokens_unprocessed(curcode)):
|
||
|
|
yield item
|