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# -*- coding: utf-8 -*-
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|
"""
|
|
|
Defines a variety of Pygments lexers for highlighting IPython code.
|
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|
|
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|
This includes:
|
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|
|
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|
IPython3Lexer
|
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|
Lexer for pure IPython (python + magic/shell commands)
|
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|
|
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|
IPythonPartialTracebackLexer, IPythonTracebackLexer
|
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|
The partial traceback lexer reads everything but the Python code
|
|
|
appearing in a traceback.
|
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|
The full lexer combines the partial lexer with the IPython3Lexer.
|
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|
|
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|
IPythonConsoleLexer
|
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|
A lexer for IPython console sessions, with support for tracebacks.
|
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|
|
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|
IPyLexer
|
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|
A friendly lexer which examines the first line of text and from it,
|
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|
decides whether to use an IPython lexer or an IPython console lexer.
|
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|
This is probably the only lexer that needs to be explicitly added
|
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|
to Pygments.
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|
|
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|
"""
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|
#-----------------------------------------------------------------------------
|
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|
# Copyright (c) 2013, the IPython Development Team.
|
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|
#
|
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|
# Distributed under the terms of the Modified BSD License.
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|
#
|
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|
# The full license is in the file COPYING.txt, distributed with this software.
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|
#-----------------------------------------------------------------------------
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|
# Standard library
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|
import re
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|
|
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|
# Third party
|
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|
from pygments.lexers import (
|
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|
BashLexer,
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|
HtmlLexer,
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|
JavascriptLexer,
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|
RubyLexer,
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|
PerlLexer,
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|
Python3Lexer,
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|
TexLexer,
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|
)
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|
from pygments.lexer import (
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|
Lexer,
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|
DelegatingLexer,
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|
RegexLexer,
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|
do_insertions,
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|
bygroups,
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|
using,
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|
inherit,
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)
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from pygments.token import (
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|
Generic, Keyword, Literal, Name, Operator, Other, Text, Error,
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|
)
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|
from pygments.util import get_bool_opt
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|
# Local
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|
line_re = re.compile('.*?\n')
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|
__all__ = [
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|
"IPython3Lexer",
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|
"IPythonPartialTracebackLexer",
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|
"IPythonTracebackLexer",
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|
"IPythonConsoleLexer",
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|
"IPyLexer",
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|
]
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|
class IPython3Lexer(Python3Lexer):
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|
"""IPython3 Lexer"""
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|
|
name = "IPython3"
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|
aliases = ["ipython3"]
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|
tokens = {
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|
"root": [
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|
|
(
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r"(?s)(\s*)(%%capture)([^\n]*\n)(.*)",
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|
bygroups(Text, Operator, Text, using(Python3Lexer)),
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|
),
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|
|
(
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|
r"(?s)(\s*)(%%debug)([^\n]*\n)(.*)",
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|
bygroups(Text, Operator, Text, using(Python3Lexer)),
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|
),
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|
|
(
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|
|
r"(?is)(\s*)(%%html)([^\n]*\n)(.*)",
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|
bygroups(Text, Operator, Text, using(HtmlLexer)),
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|
|
),
|
|
|
(
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|
|
r"(?s)(\s*)(%%javascript)([^\n]*\n)(.*)",
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|
|
bygroups(Text, Operator, Text, using(JavascriptLexer)),
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|
|
),
|
|
|
(
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|
|
r"(?s)(\s*)(%%js)([^\n]*\n)(.*)",
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|
|
bygroups(Text, Operator, Text, using(JavascriptLexer)),
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|
|
),
|
|
|
(
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|
|
r"(?s)(\s*)(%%latex)([^\n]*\n)(.*)",
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|
|
bygroups(Text, Operator, Text, using(TexLexer)),
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|
|
),
|
|
|
(
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|
|
r"(?s)(\s*)(%%perl)([^\n]*\n)(.*)",
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|
|
bygroups(Text, Operator, Text, using(PerlLexer)),
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|
|
),
|
|
|
(
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|
|
r"(?s)(\s*)(%%prun)([^\n]*\n)(.*)",
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|
|
bygroups(Text, Operator, Text, using(Python3Lexer)),
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|
|
),
|
|
|
(
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|
|
r"(?s)(\s*)(%%pypy)([^\n]*\n)(.*)",
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|
|
bygroups(Text, Operator, Text, using(Python3Lexer)),
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|
|
),
|
|
|
(
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|
|
r"(?s)(\s*)(%%python)([^\n]*\n)(.*)",
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|
|
bygroups(Text, Operator, Text, using(Python3Lexer)),
|
|
|
),
|
|
|
(
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|
|
r"(?s)(\s*)(%%python3)([^\n]*\n)(.*)",
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|
|
bygroups(Text, Operator, Text, using(Python3Lexer)),
|
|
|
),
|
|
|
(
|
|
|
r"(?s)(\s*)(%%ruby)([^\n]*\n)(.*)",
|
|
|
bygroups(Text, Operator, Text, using(RubyLexer)),
|
|
|
),
|
|
|
(
|
|
|
r"(?s)(\s*)(%%time)([^\n]*\n)(.*)",
|
|
|
bygroups(Text, Operator, Text, using(Python3Lexer)),
|
|
|
),
|
|
|
(
|
|
|
r"(?s)(\s*)(%%timeit)([^\n]*\n)(.*)",
|
|
|
bygroups(Text, Operator, Text, using(Python3Lexer)),
|
|
|
),
|
|
|
(
|
|
|
r"(?s)(\s*)(%%writefile)([^\n]*\n)(.*)",
|
|
|
bygroups(Text, Operator, Text, using(Python3Lexer)),
|
|
|
),
|
|
|
(
|
|
|
r"(?s)(\s*)(%%file)([^\n]*\n)(.*)",
|
|
|
bygroups(Text, Operator, Text, using(Python3Lexer)),
|
|
|
),
|
|
|
(r"(?s)(\s*)(%%)(\w+)(.*)", bygroups(Text, Operator, Keyword, Text)),
|
|
|
(
|
|
|
r"(?s)(^\s*)(%%!)([^\n]*\n)(.*)",
|
|
|
bygroups(Text, Operator, Text, using(BashLexer)),
|
|
|
),
|
|
|
(r"(%%?)(\w+)(\?\??)$", bygroups(Operator, Keyword, Operator)),
|
|
|
(r"\b(\?\??)(\s*)$", bygroups(Operator, Text)),
|
|
|
(
|
|
|
r"(%)(sx|sc|system)(.*)(\n)",
|
|
|
bygroups(Operator, Keyword, using(BashLexer), Text),
|
|
|
),
|
|
|
(r"(%)(\w+)(.*\n)", bygroups(Operator, Keyword, Text)),
|
|
|
(r"^(!!)(.+)(\n)", bygroups(Operator, using(BashLexer), Text)),
|
|
|
(r"(!)(?!=)(.+)(\n)", bygroups(Operator, using(BashLexer), Text)),
|
|
|
(r"^(\s*)(\?\??)(\s*%{0,2}[\w\.\*]*)", bygroups(Text, Operator, Text)),
|
|
|
(r"(\s*%{0,2}[\w\.\*]*)(\?\??)(\s*)$", bygroups(Text, Operator, Text)),
|
|
|
inherit,
|
|
|
]
|
|
|
}
|
|
|
|
|
|
|
|
|
class IPythonPartialTracebackLexer(RegexLexer):
|
|
|
"""
|
|
|
Partial lexer for IPython tracebacks.
|
|
|
|
|
|
Handles all the non-python output.
|
|
|
|
|
|
"""
|
|
|
name = 'IPython Partial Traceback'
|
|
|
|
|
|
tokens = {
|
|
|
'root': [
|
|
|
# Tracebacks for syntax errors have a different style.
|
|
|
# For both types of tracebacks, we mark the first line with
|
|
|
# Generic.Traceback. For syntax errors, we mark the filename
|
|
|
# as we mark the filenames for non-syntax tracebacks.
|
|
|
#
|
|
|
# These two regexps define how IPythonConsoleLexer finds a
|
|
|
# traceback.
|
|
|
#
|
|
|
## Non-syntax traceback
|
|
|
(r'^(\^C)?(-+\n)', bygroups(Error, Generic.Traceback)),
|
|
|
## Syntax traceback
|
|
|
(r'^( File)(.*)(, line )(\d+\n)',
|
|
|
bygroups(Generic.Traceback, Name.Namespace,
|
|
|
Generic.Traceback, Literal.Number.Integer)),
|
|
|
|
|
|
# (Exception Identifier)(Whitespace)(Traceback Message)
|
|
|
(r'(?u)(^[^\d\W]\w*)(\s*)(Traceback.*?\n)',
|
|
|
bygroups(Name.Exception, Generic.Whitespace, Text)),
|
|
|
# (Module/Filename)(Text)(Callee)(Function Signature)
|
|
|
# Better options for callee and function signature?
|
|
|
(r'(.*)( in )(.*)(\(.*\)\n)',
|
|
|
bygroups(Name.Namespace, Text, Name.Entity, Name.Tag)),
|
|
|
# Regular line: (Whitespace)(Line Number)(Python Code)
|
|
|
(r'(\s*?)(\d+)(.*?\n)',
|
|
|
bygroups(Generic.Whitespace, Literal.Number.Integer, Other)),
|
|
|
# Emphasized line: (Arrow)(Line Number)(Python Code)
|
|
|
# Using Exception token so arrow color matches the Exception.
|
|
|
(r'(-*>?\s?)(\d+)(.*?\n)',
|
|
|
bygroups(Name.Exception, Literal.Number.Integer, Other)),
|
|
|
# (Exception Identifier)(Message)
|
|
|
(r'(?u)(^[^\d\W]\w*)(:.*?\n)',
|
|
|
bygroups(Name.Exception, Text)),
|
|
|
# Tag everything else as Other, will be handled later.
|
|
|
(r'.*\n', Other),
|
|
|
],
|
|
|
}
|
|
|
|
|
|
|
|
|
class IPythonTracebackLexer(DelegatingLexer):
|
|
|
"""
|
|
|
IPython traceback lexer.
|
|
|
|
|
|
For doctests, the tracebacks can be snipped as much as desired with the
|
|
|
exception to the lines that designate a traceback. For non-syntax error
|
|
|
tracebacks, this is the line of hyphens. For syntax error tracebacks,
|
|
|
this is the line which lists the File and line number.
|
|
|
|
|
|
"""
|
|
|
|
|
|
# The lexer inherits from DelegatingLexer. The "root" lexer is the
|
|
|
# IPython3 lexer. First, we parse with the partial IPython traceback lexer.
|
|
|
# Then, any code marked with the "Other" token is delegated to the root
|
|
|
# lexer.
|
|
|
#
|
|
|
name = 'IPython Traceback'
|
|
|
aliases = ['ipythontb']
|
|
|
|
|
|
def __init__(self, **options):
|
|
|
"""
|
|
|
A subclass of `DelegatingLexer` which delegates to the appropriate to either IPyLexer,
|
|
|
IPythonPartialTracebackLexer.
|
|
|
"""
|
|
|
# note we need a __init__ doc, as otherwise it inherits the doc from the super class
|
|
|
# which will fail the documentation build as it references section of the pygments docs that
|
|
|
# do not exists when building IPython's docs.
|
|
|
|
|
|
super().__init__(IPython3Lexer, IPythonPartialTracebackLexer, **options)
|
|
|
|
|
|
|
|
|
class IPythonConsoleLexer(Lexer):
|
|
|
"""
|
|
|
An IPython console lexer for IPython code-blocks and doctests, such as:
|
|
|
|
|
|
.. code-block:: rst
|
|
|
|
|
|
.. code-block:: ipythonconsole
|
|
|
|
|
|
In [1]: a = 'foo'
|
|
|
|
|
|
In [2]: a
|
|
|
Out[2]: 'foo'
|
|
|
|
|
|
In [3]: print(a)
|
|
|
foo
|
|
|
|
|
|
|
|
|
Support is also provided for IPython exceptions:
|
|
|
|
|
|
.. code-block:: rst
|
|
|
|
|
|
.. code-block:: ipythonconsole
|
|
|
|
|
|
In [1]: raise Exception
|
|
|
Traceback (most recent call last):
|
|
|
...
|
|
|
Exception
|
|
|
|
|
|
"""
|
|
|
name = 'IPython console session'
|
|
|
aliases = ['ipythonconsole']
|
|
|
mimetypes = ['text/x-ipython-console']
|
|
|
|
|
|
# The regexps used to determine what is input and what is output.
|
|
|
# The default prompts for IPython are:
|
|
|
#
|
|
|
# in = 'In [#]: '
|
|
|
# continuation = ' .D.: '
|
|
|
# template = 'Out[#]: '
|
|
|
#
|
|
|
# Where '#' is the 'prompt number' or 'execution count' and 'D'
|
|
|
# D is a number of dots matching the width of the execution count
|
|
|
#
|
|
|
in1_regex = r'In \[[0-9]+\]: '
|
|
|
in2_regex = r' \.\.+\.: '
|
|
|
out_regex = r'Out\[[0-9]+\]: '
|
|
|
|
|
|
#: The regex to determine when a traceback starts.
|
|
|
ipytb_start = re.compile(r'^(\^C)?(-+\n)|^( File)(.*)(, line )(\d+\n)')
|
|
|
|
|
|
def __init__(self, **options):
|
|
|
"""Initialize the IPython console lexer.
|
|
|
|
|
|
Parameters
|
|
|
----------
|
|
|
in1_regex : RegexObject
|
|
|
The compiled regular expression used to detect the start
|
|
|
of inputs. Although the IPython configuration setting may have a
|
|
|
trailing whitespace, do not include it in the regex. If `None`,
|
|
|
then the default input prompt is assumed.
|
|
|
in2_regex : RegexObject
|
|
|
The compiled regular expression used to detect the continuation
|
|
|
of inputs. Although the IPython configuration setting may have a
|
|
|
trailing whitespace, do not include it in the regex. If `None`,
|
|
|
then the default input prompt is assumed.
|
|
|
out_regex : RegexObject
|
|
|
The compiled regular expression used to detect outputs. If `None`,
|
|
|
then the default output prompt is assumed.
|
|
|
|
|
|
"""
|
|
|
self.aliases = ["ipython3console"]
|
|
|
|
|
|
in1_regex = options.get('in1_regex', self.in1_regex)
|
|
|
in2_regex = options.get('in2_regex', self.in2_regex)
|
|
|
out_regex = options.get('out_regex', self.out_regex)
|
|
|
|
|
|
# So that we can work with input and output prompts which have been
|
|
|
# rstrip'd (possibly by editors) we also need rstrip'd variants. If
|
|
|
# we do not do this, then such prompts will be tagged as 'output'.
|
|
|
# The reason can't just use the rstrip'd variants instead is because
|
|
|
# we want any whitespace associated with the prompt to be inserted
|
|
|
# with the token. This allows formatted code to be modified so as hide
|
|
|
# the appearance of prompts, with the whitespace included. One example
|
|
|
# use of this is in copybutton.js from the standard lib Python docs.
|
|
|
in1_regex_rstrip = in1_regex.rstrip() + '\n'
|
|
|
in2_regex_rstrip = in2_regex.rstrip() + '\n'
|
|
|
out_regex_rstrip = out_regex.rstrip() + '\n'
|
|
|
|
|
|
# Compile and save them all.
|
|
|
attrs = ['in1_regex', 'in2_regex', 'out_regex',
|
|
|
'in1_regex_rstrip', 'in2_regex_rstrip', 'out_regex_rstrip']
|
|
|
for attr in attrs:
|
|
|
self.__setattr__(attr, re.compile(locals()[attr]))
|
|
|
|
|
|
Lexer.__init__(self, **options)
|
|
|
|
|
|
self.pylexer = IPython3Lexer(**options)
|
|
|
self.tblexer = IPythonTracebackLexer(**options)
|
|
|
|
|
|
self.reset()
|
|
|
|
|
|
def reset(self):
|
|
|
self.mode = 'output'
|
|
|
self.index = 0
|
|
|
self.buffer = u''
|
|
|
self.insertions = []
|
|
|
|
|
|
def buffered_tokens(self):
|
|
|
"""
|
|
|
Generator of unprocessed tokens after doing insertions and before
|
|
|
changing to a new state.
|
|
|
|
|
|
"""
|
|
|
if self.mode == 'output':
|
|
|
tokens = [(0, Generic.Output, self.buffer)]
|
|
|
elif self.mode == 'input':
|
|
|
tokens = self.pylexer.get_tokens_unprocessed(self.buffer)
|
|
|
else: # traceback
|
|
|
tokens = self.tblexer.get_tokens_unprocessed(self.buffer)
|
|
|
|
|
|
for i, t, v in do_insertions(self.insertions, tokens):
|
|
|
# All token indexes are relative to the buffer.
|
|
|
yield self.index + i, t, v
|
|
|
|
|
|
# Clear it all
|
|
|
self.index += len(self.buffer)
|
|
|
self.buffer = u''
|
|
|
self.insertions = []
|
|
|
|
|
|
def get_mci(self, line):
|
|
|
"""
|
|
|
Parses the line and returns a 3-tuple: (mode, code, insertion).
|
|
|
|
|
|
`mode` is the next mode (or state) of the lexer, and is always equal
|
|
|
to 'input', 'output', or 'tb'.
|
|
|
|
|
|
`code` is a portion of the line that should be added to the buffer
|
|
|
corresponding to the next mode and eventually lexed by another lexer.
|
|
|
For example, `code` could be Python code if `mode` were 'input'.
|
|
|
|
|
|
`insertion` is a 3-tuple (index, token, text) representing an
|
|
|
unprocessed "token" that will be inserted into the stream of tokens
|
|
|
that are created from the buffer once we change modes. This is usually
|
|
|
the input or output prompt.
|
|
|
|
|
|
In general, the next mode depends on current mode and on the contents
|
|
|
of `line`.
|
|
|
|
|
|
"""
|
|
|
# To reduce the number of regex match checks, we have multiple
|
|
|
# 'if' blocks instead of 'if-elif' blocks.
|
|
|
|
|
|
# Check for possible end of input
|
|
|
in2_match = self.in2_regex.match(line)
|
|
|
in2_match_rstrip = self.in2_regex_rstrip.match(line)
|
|
|
if (in2_match and in2_match.group().rstrip() == line.rstrip()) or \
|
|
|
in2_match_rstrip:
|
|
|
end_input = True
|
|
|
else:
|
|
|
end_input = False
|
|
|
if end_input and self.mode != 'tb':
|
|
|
# Only look for an end of input when not in tb mode.
|
|
|
# An ellipsis could appear within the traceback.
|
|
|
mode = 'output'
|
|
|
code = u''
|
|
|
insertion = (0, Generic.Prompt, line)
|
|
|
return mode, code, insertion
|
|
|
|
|
|
# Check for output prompt
|
|
|
out_match = self.out_regex.match(line)
|
|
|
out_match_rstrip = self.out_regex_rstrip.match(line)
|
|
|
if out_match or out_match_rstrip:
|
|
|
mode = 'output'
|
|
|
if out_match:
|
|
|
idx = out_match.end()
|
|
|
else:
|
|
|
idx = out_match_rstrip.end()
|
|
|
code = line[idx:]
|
|
|
# Use the 'heading' token for output. We cannot use Generic.Error
|
|
|
# since it would conflict with exceptions.
|
|
|
insertion = (0, Generic.Heading, line[:idx])
|
|
|
return mode, code, insertion
|
|
|
|
|
|
|
|
|
# Check for input or continuation prompt (non stripped version)
|
|
|
in1_match = self.in1_regex.match(line)
|
|
|
if in1_match or (in2_match and self.mode != 'tb'):
|
|
|
# New input or when not in tb, continued input.
|
|
|
# We do not check for continued input when in tb since it is
|
|
|
# allowable to replace a long stack with an ellipsis.
|
|
|
mode = 'input'
|
|
|
if in1_match:
|
|
|
idx = in1_match.end()
|
|
|
else: # in2_match
|
|
|
idx = in2_match.end()
|
|
|
code = line[idx:]
|
|
|
insertion = (0, Generic.Prompt, line[:idx])
|
|
|
return mode, code, insertion
|
|
|
|
|
|
# Check for input or continuation prompt (stripped version)
|
|
|
in1_match_rstrip = self.in1_regex_rstrip.match(line)
|
|
|
if in1_match_rstrip or (in2_match_rstrip and self.mode != 'tb'):
|
|
|
# New input or when not in tb, continued input.
|
|
|
# We do not check for continued input when in tb since it is
|
|
|
# allowable to replace a long stack with an ellipsis.
|
|
|
mode = 'input'
|
|
|
if in1_match_rstrip:
|
|
|
idx = in1_match_rstrip.end()
|
|
|
else: # in2_match
|
|
|
idx = in2_match_rstrip.end()
|
|
|
code = line[idx:]
|
|
|
insertion = (0, Generic.Prompt, line[:idx])
|
|
|
return mode, code, insertion
|
|
|
|
|
|
# Check for traceback
|
|
|
if self.ipytb_start.match(line):
|
|
|
mode = 'tb'
|
|
|
code = line
|
|
|
insertion = None
|
|
|
return mode, code, insertion
|
|
|
|
|
|
# All other stuff...
|
|
|
if self.mode in ('input', 'output'):
|
|
|
# We assume all other text is output. Multiline input that
|
|
|
# does not use the continuation marker cannot be detected.
|
|
|
# For example, the 3 in the following is clearly output:
|
|
|
#
|
|
|
# In [1]: print 3
|
|
|
# 3
|
|
|
#
|
|
|
# But the following second line is part of the input:
|
|
|
#
|
|
|
# In [2]: while True:
|
|
|
# print True
|
|
|
#
|
|
|
# In both cases, the 2nd line will be 'output'.
|
|
|
#
|
|
|
mode = 'output'
|
|
|
else:
|
|
|
mode = 'tb'
|
|
|
|
|
|
code = line
|
|
|
insertion = None
|
|
|
|
|
|
return mode, code, insertion
|
|
|
|
|
|
def get_tokens_unprocessed(self, text):
|
|
|
self.reset()
|
|
|
for match in line_re.finditer(text):
|
|
|
line = match.group()
|
|
|
mode, code, insertion = self.get_mci(line)
|
|
|
|
|
|
if mode != self.mode:
|
|
|
# Yield buffered tokens before transitioning to new mode.
|
|
|
for token in self.buffered_tokens():
|
|
|
yield token
|
|
|
self.mode = mode
|
|
|
|
|
|
if insertion:
|
|
|
self.insertions.append((len(self.buffer), [insertion]))
|
|
|
self.buffer += code
|
|
|
|
|
|
for token in self.buffered_tokens():
|
|
|
yield token
|
|
|
|
|
|
class IPyLexer(Lexer):
|
|
|
r"""
|
|
|
Primary lexer for all IPython-like code.
|
|
|
|
|
|
This is a simple helper lexer. If the first line of the text begins with
|
|
|
"In \[[0-9]+\]:", then the entire text is parsed with an IPython console
|
|
|
lexer. If not, then the entire text is parsed with an IPython lexer.
|
|
|
|
|
|
The goal is to reduce the number of lexers that are registered
|
|
|
with Pygments.
|
|
|
|
|
|
"""
|
|
|
name = 'IPy session'
|
|
|
aliases = ['ipy']
|
|
|
|
|
|
def __init__(self, **options):
|
|
|
"""
|
|
|
Create a new IPyLexer instance which dispatch to either an
|
|
|
IPythonConsoleLexer (if In prompts are present) or and IPython3Lexer (if
|
|
|
In prompts are not present).
|
|
|
"""
|
|
|
# init docstring is necessary for docs not to fail to build do to parent
|
|
|
# docs referenceing a section in pygments docs.
|
|
|
self.aliases = ["ipy3"]
|
|
|
|
|
|
Lexer.__init__(self, **options)
|
|
|
|
|
|
self.IPythonLexer = IPython3Lexer(**options)
|
|
|
self.IPythonConsoleLexer = IPythonConsoleLexer(**options)
|
|
|
|
|
|
def get_tokens_unprocessed(self, text):
|
|
|
# Search for the input prompt anywhere...this allows code blocks to
|
|
|
# begin with comments as well.
|
|
|
if re.match(r'.*(In \[[0-9]+\]:)', text.strip(), re.DOTALL):
|
|
|
lex = self.IPythonConsoleLexer
|
|
|
else:
|
|
|
lex = self.IPythonLexer
|
|
|
for token in lex.get_tokens_unprocessed(text):
|
|
|
yield token
|
|
|
|
