𝗖𝗨𝗥𝗥𝗘𝗡𝗧 𝗙𝗜𝗟𝗘 : /opt/alt/python37/lib/python3.7/site-packages/pygments/lexers//data.py
# -*- coding: utf-8 -*-
"""
pygments.lexers.data
~~~~~~~~~~~~~~~~~~~~
Lexers for data file format.
:copyright: Copyright 2006-2019 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
import re
from pygments.lexer import RegexLexer, ExtendedRegexLexer, LexerContext, \
include, bygroups, inherit
from pygments.token import Text, Comment, Keyword, Name, String, Number, \
Punctuation, Literal, Error
__all__ = ['YamlLexer', 'JsonLexer', 'JsonBareObjectLexer', 'JsonLdLexer']
class YamlLexerContext(LexerContext):
"""Indentation context for the YAML lexer."""
def __init__(self, *args, **kwds):
super(YamlLexerContext, self).__init__(*args, **kwds)
self.indent_stack = []
self.indent = -1
self.next_indent = 0
self.block_scalar_indent = None
class YamlLexer(ExtendedRegexLexer):
"""
Lexer for `YAML <http://yaml.org/>`_, a human-friendly data serialization
language.
.. versionadded:: 0.11
"""
name = 'YAML'
aliases = ['yaml']
filenames = ['*.yaml', '*.yml']
mimetypes = ['text/x-yaml']
def something(token_class):
"""Do not produce empty tokens."""
def callback(lexer, match, context):
text = match.group()
if not text:
return
yield match.start(), token_class, text
context.pos = match.end()
return callback
def reset_indent(token_class):
"""Reset the indentation levels."""
def callback(lexer, match, context):
text = match.group()
context.indent_stack = []
context.indent = -1
context.next_indent = 0
context.block_scalar_indent = None
yield match.start(), token_class, text
context.pos = match.end()
return callback
def save_indent(token_class, start=False):
"""Save a possible indentation level."""
def callback(lexer, match, context):
text = match.group()
extra = ''
if start:
context.next_indent = len(text)
if context.next_indent < context.indent:
while context.next_indent < context.indent:
context.indent = context.indent_stack.pop()
if context.next_indent > context.indent:
extra = text[context.indent:]
text = text[:context.indent]
else:
context.next_indent += len(text)
if text:
yield match.start(), token_class, text
if extra:
yield match.start()+len(text), token_class.Error, extra
context.pos = match.end()
return callback
def set_indent(token_class, implicit=False):
"""Set the previously saved indentation level."""
def callback(lexer, match, context):
text = match.group()
if context.indent < context.next_indent:
context.indent_stack.append(context.indent)
context.indent = context.next_indent
if not implicit:
context.next_indent += len(text)
yield match.start(), token_class, text
context.pos = match.end()
return callback
def set_block_scalar_indent(token_class):
"""Set an explicit indentation level for a block scalar."""
def callback(lexer, match, context):
text = match.group()
context.block_scalar_indent = None
if not text:
return
increment = match.group(1)
if increment:
current_indent = max(context.indent, 0)
increment = int(increment)
context.block_scalar_indent = current_indent + increment
if text:
yield match.start(), token_class, text
context.pos = match.end()
return callback
def parse_block_scalar_empty_line(indent_token_class, content_token_class):
"""Process an empty line in a block scalar."""
def callback(lexer, match, context):
text = match.group()
if (context.block_scalar_indent is None or
len(text) <= context.block_scalar_indent):
if text:
yield match.start(), indent_token_class, text
else:
indentation = text[:context.block_scalar_indent]
content = text[context.block_scalar_indent:]
yield match.start(), indent_token_class, indentation
yield (match.start()+context.block_scalar_indent,
content_token_class, content)
context.pos = match.end()
return callback
def parse_block_scalar_indent(token_class):
"""Process indentation spaces in a block scalar."""
def callback(lexer, match, context):
text = match.group()
if context.block_scalar_indent is None:
if len(text) <= max(context.indent, 0):
context.stack.pop()
context.stack.pop()
return
context.block_scalar_indent = len(text)
else:
if len(text) < context.block_scalar_indent:
context.stack.pop()
context.stack.pop()
return
if text:
yield match.start(), token_class, text
context.pos = match.end()
return callback
def parse_plain_scalar_indent(token_class):
"""Process indentation spaces in a plain scalar."""
def callback(lexer, match, context):
text = match.group()
if len(text) <= context.indent:
context.stack.pop()
context.stack.pop()
return
if text:
yield match.start(), token_class, text
context.pos = match.end()
return callback
tokens = {
# the root rules
'root': [
# ignored whitespaces
(r'[ ]+(?=#|$)', Text),
# line breaks
(r'\n+', Text),
# a comment
(r'#[^\n]*', Comment.Single),
# the '%YAML' directive
(r'^%YAML(?=[ ]|$)', reset_indent(Name.Tag), 'yaml-directive'),
# the %TAG directive
(r'^%TAG(?=[ ]|$)', reset_indent(Name.Tag), 'tag-directive'),
# document start and document end indicators
(r'^(?:---|\.\.\.)(?=[ ]|$)', reset_indent(Name.Namespace),
'block-line'),
# indentation spaces
(r'[ ]*(?!\s|$)', save_indent(Text, start=True),
('block-line', 'indentation')),
],
# trailing whitespaces after directives or a block scalar indicator
'ignored-line': [
# ignored whitespaces
(r'[ ]+(?=#|$)', Text),
# a comment
(r'#[^\n]*', Comment.Single),
# line break
(r'\n', Text, '#pop:2'),
],
# the %YAML directive
'yaml-directive': [
# the version number
(r'([ ]+)([0-9]+\.[0-9]+)',
bygroups(Text, Number), 'ignored-line'),
],
# the %TAG directive
'tag-directive': [
# a tag handle and the corresponding prefix
(r'([ ]+)(!|![\w-]*!)'
r'([ ]+)(!|!?[\w;/?:@&=+$,.!~*\'()\[\]%-]+)',
bygroups(Text, Keyword.Type, Text, Keyword.Type),
'ignored-line'),
],
# block scalar indicators and indentation spaces
'indentation': [
# trailing whitespaces are ignored
(r'[ ]*$', something(Text), '#pop:2'),
# whitespaces preceding block collection indicators
(r'[ ]+(?=[?:-](?:[ ]|$))', save_indent(Text)),
# block collection indicators
(r'[?:-](?=[ ]|$)', set_indent(Punctuation.Indicator)),
# the beginning a block line
(r'[ ]*', save_indent(Text), '#pop'),
],
# an indented line in the block context
'block-line': [
# the line end
(r'[ ]*(?=#|$)', something(Text), '#pop'),
# whitespaces separating tokens
(r'[ ]+', Text),
# key with colon
(r'''([^,:?\[\]{}"'\n]+)(:)(?=[ ]|$)''',
bygroups(Name.Tag, set_indent(Punctuation, implicit=True))),
# tags, anchors and aliases,
include('descriptors'),
# block collections and scalars
include('block-nodes'),
# flow collections and quoted scalars
include('flow-nodes'),
# a plain scalar
(r'(?=[^\s?:,\[\]{}#&*!|>\'"%@`-]|[?:-]\S)',
something(Name.Variable),
'plain-scalar-in-block-context'),
],
# tags, anchors, aliases
'descriptors': [
# a full-form tag
(r'!<[\w#;/?:@&=+$,.!~*\'()\[\]%-]+>', Keyword.Type),
# a tag in the form '!', '!suffix' or '!handle!suffix'
(r'!(?:[\w-]+!)?'
r'[\w#;/?:@&=+$,.!~*\'()\[\]%-]*', Keyword.Type),
# an anchor
(r'&[\w-]+', Name.Label),
# an alias
(r'\*[\w-]+', Name.Variable),
],
# block collections and scalars
'block-nodes': [
# implicit key
(r':(?=[ ]|$)', set_indent(Punctuation.Indicator, implicit=True)),
# literal and folded scalars
(r'[|>]', Punctuation.Indicator,
('block-scalar-content', 'block-scalar-header')),
],
# flow collections and quoted scalars
'flow-nodes': [
# a flow sequence
(r'\[', Punctuation.Indicator, 'flow-sequence'),
# a flow mapping
(r'\{', Punctuation.Indicator, 'flow-mapping'),
# a single-quoted scalar
(r'\'', String, 'single-quoted-scalar'),
# a double-quoted scalar
(r'\"', String, 'double-quoted-scalar'),
],
# the content of a flow collection
'flow-collection': [
# whitespaces
(r'[ ]+', Text),
# line breaks
(r'\n+', Text),
# a comment
(r'#[^\n]*', Comment.Single),
# simple indicators
(r'[?:,]', Punctuation.Indicator),
# tags, anchors and aliases
include('descriptors'),
# nested collections and quoted scalars
include('flow-nodes'),
# a plain scalar
(r'(?=[^\s?:,\[\]{}#&*!|>\'"%@`])',
something(Name.Variable),
'plain-scalar-in-flow-context'),
],
# a flow sequence indicated by '[' and ']'
'flow-sequence': [
# include flow collection rules
include('flow-collection'),
# the closing indicator
(r'\]', Punctuation.Indicator, '#pop'),
],
# a flow mapping indicated by '{' and '}'
'flow-mapping': [
# key with colon
(r'''([^,:?\[\]{}"'\n]+)(:)(?=[ ]|$)''',
bygroups(Name.Tag, Punctuation)),
# include flow collection rules
include('flow-collection'),
# the closing indicator
(r'\}', Punctuation.Indicator, '#pop'),
],
# block scalar lines
'block-scalar-content': [
# line break
(r'\n', Text),
# empty line
(r'^[ ]+$',
parse_block_scalar_empty_line(Text, Name.Constant)),
# indentation spaces (we may leave the state here)
(r'^[ ]*', parse_block_scalar_indent(Text)),
# line content
(r'[\S\t ]+', Name.Constant),
],
# the content of a literal or folded scalar
'block-scalar-header': [
# indentation indicator followed by chomping flag
(r'([1-9])?[+-]?(?=[ ]|$)',
set_block_scalar_indent(Punctuation.Indicator),
'ignored-line'),
# chomping flag followed by indentation indicator
(r'[+-]?([1-9])?(?=[ ]|$)',
set_block_scalar_indent(Punctuation.Indicator),
'ignored-line'),
],
# ignored and regular whitespaces in quoted scalars
'quoted-scalar-whitespaces': [
# leading and trailing whitespaces are ignored
(r'^[ ]+', Text),
(r'[ ]+$', Text),
# line breaks are ignored
(r'\n+', Text),
# other whitespaces are a part of the value
(r'[ ]+', Name.Variable),
],
# single-quoted scalars
'single-quoted-scalar': [
# include whitespace and line break rules
include('quoted-scalar-whitespaces'),
# escaping of the quote character
(r'\'\'', String.Escape),
# regular non-whitespace characters
(r'[^\s\']+', String),
# the closing quote
(r'\'', String, '#pop'),
],
# double-quoted scalars
'double-quoted-scalar': [
# include whitespace and line break rules
include('quoted-scalar-whitespaces'),
# escaping of special characters
(r'\\[0abt\tn\nvfre "\\N_LP]', String),
# escape codes
(r'\\(?:x[0-9A-Fa-f]{2}|u[0-9A-Fa-f]{4}|U[0-9A-Fa-f]{8})',
String.Escape),
# regular non-whitespace characters
(r'[^\s"\\]+', String),
# the closing quote
(r'"', String, '#pop'),
],
# the beginning of a new line while scanning a plain scalar
'plain-scalar-in-block-context-new-line': [
# empty lines
(r'^[ ]+$', Text),
# line breaks
(r'\n+', Text),
# document start and document end indicators
(r'^(?=---|\.\.\.)', something(Name.Namespace), '#pop:3'),
# indentation spaces (we may leave the block line state here)
(r'^[ ]*', parse_plain_scalar_indent(Text), '#pop'),
],
# a plain scalar in the block context
'plain-scalar-in-block-context': [
# the scalar ends with the ':' indicator
(r'[ ]*(?=:[ ]|:$)', something(Text), '#pop'),
# the scalar ends with whitespaces followed by a comment
(r'[ ]+(?=#)', Text, '#pop'),
# trailing whitespaces are ignored
(r'[ ]+$', Text),
# line breaks are ignored
(r'\n+', Text, 'plain-scalar-in-block-context-new-line'),
# other whitespaces are a part of the value
(r'[ ]+', Literal.Scalar.Plain),
# regular non-whitespace characters
(r'(?::(?!\s)|[^\s:])+', Literal.Scalar.Plain),
],
# a plain scalar is the flow context
'plain-scalar-in-flow-context': [
# the scalar ends with an indicator character
(r'[ ]*(?=[,:?\[\]{}])', something(Text), '#pop'),
# the scalar ends with a comment
(r'[ ]+(?=#)', Text, '#pop'),
# leading and trailing whitespaces are ignored
(r'^[ ]+', Text),
(r'[ ]+$', Text),
# line breaks are ignored
(r'\n+', Text),
# other whitespaces are a part of the value
(r'[ ]+', Name.Variable),
# regular non-whitespace characters
(r'[^\s,:?\[\]{}]+', Name.Variable),
],
}
def get_tokens_unprocessed(self, text=None, context=None):
if context is None:
context = YamlLexerContext(text, 0)
return super(YamlLexer, self).get_tokens_unprocessed(text, context)
class JsonLexer(RegexLexer):
"""
For JSON data structures.
.. versionadded:: 1.5
"""
name = 'JSON'
aliases = ['json']
filenames = ['*.json']
mimetypes = ['application/json']
flags = re.DOTALL
# integer part of a number
int_part = r'-?(0|[1-9]\d*)'
# fractional part of a number
frac_part = r'\.\d+'
# exponential part of a number
exp_part = r'[eE](\+|-)?\d+'
tokens = {
'whitespace': [
(r'\s+', Text),
],
# represents a simple terminal value
'simplevalue': [
(r'(true|false|null)\b', Keyword.Constant),
(('%(int_part)s(%(frac_part)s%(exp_part)s|'
'%(exp_part)s|%(frac_part)s)') % vars(),
Number.Float),
(int_part, Number.Integer),
(r'"(\\\\|\\"|[^"])*"', String.Double),
],
# the right hand side of an object, after the attribute name
'objectattribute': [
include('value'),
(r':', Punctuation),
# comma terminates the attribute but expects more
(r',', Punctuation, '#pop'),
# a closing bracket terminates the entire object, so pop twice
(r'\}', Punctuation, '#pop:2'),
],
# a json object - { attr, attr, ... }
'objectvalue': [
include('whitespace'),
(r'"(\\\\|\\"|[^"])*"', Name.Tag, 'objectattribute'),
(r'\}', Punctuation, '#pop'),
],
# json array - [ value, value, ... }
'arrayvalue': [
include('whitespace'),
include('value'),
(r',', Punctuation),
(r'\]', Punctuation, '#pop'),
],
# a json value - either a simple value or a complex value (object or array)
'value': [
include('whitespace'),
include('simplevalue'),
(r'\{', Punctuation, 'objectvalue'),
(r'\[', Punctuation, 'arrayvalue'),
],
# the root of a json document whould be a value
'root': [
include('value'),
],
}
class JsonBareObjectLexer(JsonLexer):
"""
For JSON data structures (with missing object curly braces).
.. versionadded:: 2.2
"""
name = 'JSONBareObject'
aliases = ['json-object']
filenames = []
mimetypes = ['application/json-object']
tokens = {
'root': [
(r'\}', Error),
include('objectvalue'),
],
'objectattribute': [
(r'\}', Error),
inherit,
],
}
class JsonLdLexer(JsonLexer):
"""
For `JSON-LD <http://json-ld.org/>`_ linked data.
.. versionadded:: 2.0
"""
name = 'JSON-LD'
aliases = ['jsonld', 'json-ld']
filenames = ['*.jsonld']
mimetypes = ['application/ld+json']
tokens = {
'objectvalue': [
(r'"@(context|id|value|language|type|container|list|set|'
r'reverse|index|base|vocab|graph)"', Name.Decorator,
'objectattribute'),
inherit,
],
}
