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272 lines
8.7 KiB
Python
272 lines
8.7 KiB
Python
"""
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pygments.lexers.ul4
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~~~~~~~~~~~~~~~~~~~
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Lexer for the UL4 templating language.
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More information: https://python.livinglogic.de/UL4.html
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:copyright: Copyright 2006-2022 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 RegexLexer, DelegatingLexer, bygroups, words, include
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from pygments.token import Comment, Text, Keyword, String, Number, Literal, \
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Name, Other, Operator
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from pygments.lexers.web import HtmlLexer, XmlLexer, CssLexer, JavascriptLexer
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from pygments.lexers.python import PythonLexer
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__all__ = [
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'UL4Lexer',
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'HTMLUL4Lexer',
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'XMLUL4Lexer',
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'CSSUL4Lexer',
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'JavascriptUL4Lexer',
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'PythonUL4Lexer',
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]
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class UL4Lexer(RegexLexer):
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"""
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Generic lexer for UL4.
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.. versionadded:: 2.12
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"""
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flags = re.MULTILINE | re.DOTALL
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name = 'UL4'
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aliases = ['ul4']
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filenames = ['*.ul4']
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tokens = {
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"root": [
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(
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# Template header without name:
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# ``<?ul4?>``
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r"(<\?)(\s*)(ul4)(\s*)(\?>)",
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bygroups(Comment.Preproc, Text.Whitespace, Keyword, Text.Whitespace, Comment.Preproc),
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),
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(
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# Template header with name (potentially followed by the signature):
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# ``<?ul4 foo(bar=42)?>``
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r"(<\?)(\s*)(ul4)(\s*)([a-zA-Z_][a-zA-Z_0-9]*)?",
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bygroups(Comment.Preproc, Text.Whitespace, Keyword, Text.Whitespace, Name.Function),
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"ul4", # Switch to "expression" mode
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),
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(
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# Comment:
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# ``<?note foobar?>``
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r"<\?\s*note\s.*?\?>",
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Comment,
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),
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(
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# Template documentation:
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# ``<?doc foobar?>``
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r"<\?\s*doc\s.*?\?>",
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String.Doc,
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),
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(
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# ``<?ignore?>`` tag for commenting out code:
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# ``<?ignore?>...<?end ignore?>``
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r"<\?\s*ignore\s*\?>",
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Comment,
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"ignore", # Switch to "ignore" mode
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),
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(
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# ``<?def?>`` tag for defining local templates
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# ``<?def foo(bar=42)?>...<?end def?>``
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r"(<\?)(\s*)(def)(\s*)([a-zA-Z_][a-zA-Z_0-9]*)?",
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bygroups(Comment.Preproc, Text.Whitespace, Keyword, Text.Whitespace, Name.Function),
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"ul4", # Switch to "expression" mode
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),
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(
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# The rest of the supported tags
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r"(<\?)(\s*)(printx|print|for|if|elif|else|while|code|renderblocks?|render)\b",
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bygroups(Comment.Preproc, Text.Whitespace, Keyword),
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"ul4", # Switch to "expression" mode
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),
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(
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# ``<?end?>`` tag for ending ``<?def?>``, ``<?for?>``,
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# ``<?if?>``, ``<?while?>``, ``<?renderblock?>`` and
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# ``<?renderblocks?>`` blocks.
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r"(<\?)(\s*)(end)\b",
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bygroups(Comment.Preproc, Text.Whitespace, Keyword),
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"end", # Switch to "end tag" mode
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),
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(
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# ``<?whitespace?>`` tag for configuring whitespace handlng
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r"(<\?)(\s*)(whitespace)\b",
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bygroups(Comment.Preproc, Text.Whitespace, Keyword),
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"whitespace", # Switch to "whitespace" mode
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),
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# Plain text
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(r"[^<]+", Other),
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(r"<", Other),
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],
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# Ignore mode ignores everything upto the matching ``<?end ignore?>`` tag
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"ignore": [
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# Nested ``<?ignore?>`` tag
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(r"<\?\s*ignore\s*\?>", Comment, "#push"),
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# ``<?end ignore?>`` tag
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(r"<\?\s*end\s+ignore\s*\?>", Comment, "#pop"),
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# Everything else
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(r"[^<]+", Comment),
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(r".", Comment),
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],
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# UL4 expressions
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"ul4": [
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# End the tag
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(r"\?>", Comment.Preproc, "#pop"),
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# Start triple quoted string constant
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("'''", String, "string13"),
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('"""', String, "string23"),
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# Start single quoted string constant
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("'", String, "string1"),
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('"', String, "string2"),
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# Floating point number
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(r"\d+\.\d*([eE][+-]?\d+)?", Number.Float),
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(r"\.\d+([eE][+-]?\d+)?", Number.Float),
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(r"\d+[eE][+-]?\d+", Number.Float),
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# Binary integer: ``0b101010``
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(r"0[bB][01]+", Number.Bin),
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# Octal integer: ``0o52``
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(r"0[oO][0-7]+", Number.Oct),
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# Hexadecimal integer: ``0x2a``
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(r"0[xX][0-9a-fA-F]+", Number.Hex),
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# Date or datetime: ``@(2000-02-29)``/``@(2000-02-29T12:34:56.987654)``
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(r"@\(\d\d\d\d-\d\d-\d\d(T(\d\d:\d\d(:\d\d(\.\d{6})?)?)?)?\)", Literal.Date),
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# Color: ``#fff``, ``#fff8f0`` etc.
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(r"#[0-9a-fA-F]{8}", Literal.Color),
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(r"#[0-9a-fA-F]{6}", Literal.Color),
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(r"#[0-9a-fA-F]{3,4}", Literal.Color),
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# Decimal integer: ``42``
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(r"\d+", Number.Integer),
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# Operators
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(r"//|==|!=|>=|<=|<<|>>|\+=|-=|\*=|/=|//=|<<=|>>=|&=|\|=|^=|=|[\[\]{},:*/().~%&|<>^+-]", Operator),
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# Keywords
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(words(("for", "in", "if", "else", "not", "is", "and", "or"), suffix=r"\b"), Keyword),
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# Builtin constants
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(words(("None", "False", "True"), suffix=r"\b"), Keyword.Constant),
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# Variable names
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(r"[a-zA-Z_][a-zA-Z0-9_]*", Name),
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# Whitespace
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(r"\s+", Text.Whitespace),
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],
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# ``<?end ...?>`` tag for closing the last open block
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"end": [
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(r"\?>", Comment.Preproc, "#pop"),
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(words(("for", "if", "def", "while", "renderblock", "renderblocks"), suffix=r"\b"), Keyword),
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(r"\s+", Text),
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],
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# Content of the ``<?whitespace ...?>`` tag:
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# ``keep``, ``strip`` or ``smart``
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"whitespace": [
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(r"\?>", Comment.Preproc, "#pop"),
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(words(("keep", "strip", "smart"), suffix=r"\b"), Comment.Preproc),
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(r"\s+", Text.Whitespace),
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],
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# Inside a string constant
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"stringescapes": [
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(r"""\\[\\'"abtnfr]""", String.Escape),
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(r"\\x[0-9a-fA-F]{2}", String.Escape),
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(r"\\u[0-9a-fA-F]{4}", String.Escape),
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(r"\\U[0-9a-fA-F]{8}", String.Escape),
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],
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# Inside a triple quoted string started with ``'''``
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"string13": [
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(r"'''", String, "#pop"),
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include("stringescapes"),
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(r"[^\\']+", String),
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(r'.', String),
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],
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# Inside a triple quoted string started with ``"""``
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"string23": [
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(r'"""', String, "#pop"),
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include("stringescapes"),
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(r'[^\\"]+', String),
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(r'.', String),
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],
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# Inside a single quoted string started with ``'``
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"string1": [
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(r"'", String, "#pop"),
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include("stringescapes"),
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(r"[^\\']+", String),
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(r'.', String),
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],
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# Inside a single quoted string started with ``"``
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"string2": [
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(r'"', String, "#pop"),
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include("stringescapes"),
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(r'[^\\"]+', String),
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(r'.', String),
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],
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}
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class HTMLUL4Lexer(DelegatingLexer):
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"""
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Lexer for UL4 embedded in HTML.
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"""
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name = 'HTML+UL4'
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aliases = ['html+ul4']
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filenames = ['*.htmlul4']
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def __init__(self, **options):
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super().__init__(HtmlLexer, UL4Lexer, **options)
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class XMLUL4Lexer(DelegatingLexer):
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"""
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Lexer for UL4 embedded in XML.
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"""
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name = 'XML+UL4'
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aliases = ['xml+ul4']
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filenames = ['*.xmlul4']
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def __init__(self, **options):
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super().__init__(XmlLexer, UL4Lexer, **options)
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class CSSUL4Lexer(DelegatingLexer):
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"""
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Lexer for UL4 embedded in CSS.
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"""
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name = 'CSS+UL4'
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aliases = ['css+ul4']
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filenames = ['*.cssul4']
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def __init__(self, **options):
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super().__init__(CssLexer, UL4Lexer, **options)
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class JavascriptUL4Lexer(DelegatingLexer):
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"""
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Lexer for UL4 embedded in Javascript.
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"""
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name = 'Javascript+UL4'
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aliases = ['js+ul4']
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filenames = ['*.jsul4']
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def __init__(self, **options):
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super().__init__(JavascriptLexer, UL4Lexer, **options)
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class PythonUL4Lexer(DelegatingLexer):
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"""
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Lexer for UL4 embedded in Python.
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"""
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name = 'Python+UL4'
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aliases = ['py+ul4']
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filenames = ['*.pyul4']
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def __init__(self, **options):
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super().__init__(PythonLexer, UL4Lexer, **options)
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