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diff --git a/macros/luatex/latex/piton/piton.lua b/macros/luatex/latex/piton/piton.lua
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--- -*- coding: utf-8 ; -*-
---
--- This is file 'piton.lua' which is a part of the Latex package 'piton'
--- Copyright (C) 2022 by F. Pantigny
-
--- This file may be distributed and/or modified under the
--- conditions of the Latex Project Public License, either
--- version 1.3 of this license or (at your option) any later
--- version. The latest version of this license is in:
---
--- http://www.Latex-project.org/lppl.txt
---
--- and version 1.3 or later is part of all distributions of
--- Latex version 2005/12/01 or later.
-
-
--- This file is part of the version 0.6a of the package 'piton'
-
-local P, S, V , C , Ct, Cc, Cf = lpeg.P, lpeg.S, lpeg.V, lpeg.C, lpeg.Ct, lpeg.Cc, lpeg.Cf
-
-
---[[ By convention, a capture which provides as value a table (and not a string), provides, in fact,
-a string (the first element of the table) which is a formatting LaTeX instruction (it will be
-thrown back to TeX with normal catcodes (ant not ``other'' catcode for everybody).]]
-
-local function L(string)
- return lpeg.Cc ( { string } )
-end
-
-local function K(pattern, style)
- return
- L ( "{\\PitonStyle{" .. style .. "}{" )
- * lpeg.C(pattern)
- * L ( "}}" )
-end
-
-
---[[ The text in "escape" (between begin_escape and end_escape) is captured
-and put in a table (with only one component). Indeed, we have decided that a capture
-which is encapsulated in a table must be transmitted to TeX with the normal TeX catcodes.]]
-
-local Escape = P(begin_escape)
- * Ct ( C ( ( 1 - P(end_escape) ) ^ 1 ) )
- * P(end_escape)
-
-local EOL = ( P "\r" ) * L ( "\\pitonEOL" )
-
-
-
-lpeg.locale(lpeg) -- mandatory
-
-local alpha , digit , space , punct = lpeg.alpha , lpeg.digit , lpeg.space , lpeg.punct
-
-local letter = alpha + S"âàçéèêëïîôûüÂÀÇÉÈÊËÏÎÔÛÜ_"
-
-local alphanum = letter + digit
-
-local identifier = letter * alphanum ^ 0
-
-local Identifier = C ( identifier )
-
-local Space = C ( ( space - P "\r" ) ^ 1 )
-
-local SkipSpace = C ( ( space - P "\r" ) ^ 0 )
-
-local Punct = C ( punct )
-
-
-local Number =
- K (
- ( digit^1 * P "." * digit^0 + digit^0 * P "." * digit^1 + digit^1 )
- * ( S "eE" * S "+-" ^ -1 * digit^1 ) ^ -1
- + digit^1
- , 'Number' )
-
-local Word = C ( ( ( 1 - space ) - S "'\"\r[()]" - digit ) ^ 1 )
-
-local Delim = C ( S "[()]" )
-
-
-local Keyword =
- K ( P "assert" + P "break" + P "case" + P "continue" + P "del"
- + P "elif" + P "else" + P "except" + P "exec" + P "finally" + P "for" + P "from"
- + P "global" + P "if" + P "import" + P "lambda" + P "non local"
- + P "pass" + P "return" + P "try" + P "while"
- + P "with" + P "yield" + P "yield from" ,
- 'Keyword' )
- + K ( P "True" + P "False" + P "None" , 'Keyword.Constant' )
-
-
-local Builtin =
- K ( P "__import__" + P "abs" + P "all" + P "any" + P "bin" + P "bool" + P "bytearray"
- + P "bytes" + P "chr" + P "classmethod" + P "compile" + P "complex" + P "delattr"
- + P "dict" + P "dir" + P "divmod" + P "enumerate" + P "eval" + P "filter"
- + P "float" + P "format" + P "frozenset" + P "getattr" + P "globals" + P "hasattr"
- + P "hash" + P "hex" + P "id" + P "input" + P "int" + P "isinstance" + P "issubclass"
- + P "iter" + P "len" + P "list" + P "locals" + P "map" + P "max" + P "memoryview" + P "min"
- + P "next" + P "object" + P "oct" + P "open" + P "ord" + P "pow" + P "print" + P "property"
- + P "range" + P "repr" + P "reversed" + P "round" + P "set" + P "setattr" + P "slice"
- + P "sorted" + P "staticmethod" + P "str" + P "sum" + P "super" + P "tuple" + P "type"
- + P "vars" + P "zip" ,
- 'Name.Builtin' )
-
-
-local Exception =
- K ( "ArithmeticError" + P "AssertionError" + P "AttributeError"
- + P "BaseException" + P "BufferError" + P "BytesWarning" + P "DeprecationWarning"
- + P "EOFError" + P "EnvironmentError" + P "Exception" + P "FloatingPointError"
- + P "FutureWarning" + P "GeneratorExit" + P "IOError" + P "ImportError"
- + P "ImportWarning" + P "IndentationError" + P "IndexError" + P "KeyError"
- + P "KeyboardInterrupt" + P "LookupError" + P "MemoryError" + P "NameError"
- + P "NotImplementedError" + P "OSError" + P "OverflowError"
- + P "PendingDeprecationWarning" + P "ReferenceError" + P "ResourceWarning"
- + P "RuntimeError" + P "RuntimeWarning" + P "StopIteration"
- + P "SyntaxError" + P "SyntaxWarning" + P "SystemError" + P "SystemExit"
- + P "TabError" + P "TypeError" + P "UnboundLocalError" + P "UnicodeDecodeError"
- + P "UnicodeEncodeError" + P "UnicodeError" + P "UnicodeTranslateError"
- + P "UnicodeWarning" + P "UserWarning" + P "ValueError" + P "VMSError"
- + P "Warning" + P "WindowsError" + P "ZeroDivisionError"
- + P "BlockingIOError" + P "ChildProcessError" + P "ConnectionError"
- + P "BrokenPipeError" + P "ConnectionAbortedError" + P "ConnectionRefusedError"
- + P "ConnectionResetError" + P "FileExistsError" + P "FileNotFoundError"
- + P "InterruptedError" + P "IsADirectoryError" + P "NotADirectoryError"
- + P "PermissionError" + P "ProcessLookupError" + P "TimeoutError"
- + P "StopAsyncIteration" + P "ModuleNotFoundError" + P "RecursionError" ,
- 'Exception' )
-
-local RaiseException = K ( P "raise" , 'Keyword' ) * SkipSpace * Exception * C ( P "(" )
-
-local ExceptionInConsole = Exception * C ( ( 1 - P "\r" ) ^ 0 ) * EOL
-
-
-local Namespace =
- K ( P "from" , 'Keyword' ) * Space * K ( alphanum^1 , 'Name.Namespace' )
- * ( Space * K ( P "import" , 'Keyword' ) ) ^ -1
-
-
-local ImportAs = K ( P "import" , 'Keyword' )
- * Space
- * K ( identifier , 'Name.Namespace' )
- * ( SkipSpace * C ( P "," ) * SkipSpace * K ( identifier , 'Name.Namespace' ) ) ^ 0
- * (
- Space * K ( P "as" , 'Keyword' ) * Space * K ( identifier , 'Name.Namespace' )
- ) ^ 0
-
-local Class = K ( P "class" , 'Keyword' ) * Space * K ( identifier , 'Name.Class' )
-
-local Decorator = K ( P "@" * letter^1 , 'Name.Decorator' )
-
-local SingleShortInterpol =
- K ( P "{" , 'String.Interpol')
- * K ( ( 1 - S "}':" ) ^ 0 , 'Interpol.Inside' )
- * C ( P ":" * (1 - S "}:'") ^ 0 ) ^ -1
- * K ( P "}" , 'String.Interpol' )
-
-local DoubleShortInterpol =
- K ( P "{" , 'String.Interpol' )
- * K ( ( 1 - S "}\":" ) ^ 0 , 'Interpol.Inside' )
- * ( K ( P ":" , 'String.Interpol' ) * C ( (1 - S "}:\"") ^ 0 ) ) ^ -1
- * K ( P "}" , 'String.Interpol' )
-
-local SingleLongInterpol =
- K ( P "{" , 'String.Interpol' )
- * K ( ( 1 - S "}:\r" - P "'''" ) ^ 0 , 'Interpol.Inside' )
- * C ( P ":" * (1 - S "}:\r" - P "'''" ) ^ 0 ) ^ -1
- * K ( P "}" , 'String.Interpol' )
-
-local DoubleLongInterpol =
- K ( P "{" , 'String.Interpol' )
- * K ( ( 1 - S "}:\r" - P "\"\"\"" ) ^ 0 , 'Interpol.Inside' )
- * C ( P ":" * (1 - S "}:\r" - P "\"\"\"" ) ^ 0 ) ^ -1
- * K ( P "}" , 'String.Interpol' )
-
-local SingleShortPureString = C ( ( P "\\'" + P "{{" + P "}}" + 1 - S "{}'" ) ^ 1 )
-
-local DoubleShortPureString = C ( ( P "\\\"" + P "{{" + P "}}" + 1 - S "{}\"" ) ^ 1 )
-
-local SingleLongPureString = C ( ( 1 - P "'''" - S "{}'\r" ) ^ 1 )
-
-local DoubleLongPureString = C ( ( 1 - P "\"\"\"" - S "{}\"\r" ) ^ 1 )
-
-local SingleShortString =
- L ( "{\\PitonStyle{String.Short}{" )
- * (
- C ( P "f'" + P "F'" )
- * ( SingleShortInterpol + SingleShortPureString ) ^ 0
- * C ( P "'" )
- +
- C ( ( P "'" + P "r'" + P "R'" ) * ( P "\\'" + 1 - S "'\r" ) ^ 0 * P "'" )
- )
- * L ( "}}" )
-
-local DoubleShortString =
- L ( "{\\PitonStyle{String.Short}{" )
- * (
- C ( P "f\"" + P "F\"" )
- * ( DoubleShortInterpol + DoubleShortPureString ) ^ 0
- * C ( P "\"" )
- +
- C ( ( P "\"" + P "r\"" + P "R\"" ) * ( P "\\\"" + 1 - S "\"\r" ) ^ 0 * P "\"" )
- )
- * L ( "}}" )
-
-
-local ShortString = SingleShortString + DoubleShortString
-
-
-local SingleLongString =
- L "{\\PitonStyle{String.Long}{"
- * (
- C ( S "fF" * P "'''" )
- * ( SingleLongInterpol + SingleLongPureString ) ^ 0
- * L "}}"
- * (
- EOL
- +
- L "{\\PitonStyle{String.Long}{"
- * ( SingleLongInterpol + SingleLongPureString ) ^ 0
- * L "}}"
- * EOL
- ) ^ 0
- * L "{\\PitonStyle{String.Long}{"
- * ( SingleLongInterpol + SingleLongPureString ) ^ 0
- +
- C ( ( S "rR" ) ^ -1 * P "'''" * ( 1 - P "'''" - P "\r" ) ^ 0 )
- * L "}}"
- * (
- L "{\\PitonStyle{String.Long}{"
- * C ( ( 1 - P "'''" - P "\r" ) ^ 0 )
- * L "}}"
- * EOL
- ) ^ 0
- * L "{\\PitonStyle{String.Long}{"
- * C ( ( 1 - P "'''" - P "\r" ) ^ 0 )
- )
- * C ( P "'''" )
- * L "}}"
-
-
-local DoubleLongString =
- L "{\\PitonStyle{String.Long}{"
- * (
- C ( S "fF" * P "\"\"\"" )
- * ( DoubleLongInterpol + DoubleLongPureString ) ^ 0
- * L "}}"
- * (
- EOL
- +
- L "{\\PitonStyle{String.Long}{"
- * ( DoubleLongInterpol + DoubleLongPureString ) ^ 0
- * L "}}"
- * EOL
- ) ^ 0
- * L "{\\PitonStyle{String.Long}{"
- * ( DoubleLongInterpol + DoubleLongPureString ) ^ 0
- +
- C ( ( S "rR" ) ^ -1 * P "\"\"\"" * ( 1 - P "\"\"\"" - P "\r" ) ^ 0 )
- * L "}}"
- * (
- L "{\\PitonStyle{String.Long}{"
- * C ( ( 1 - P "\"\"\"" - P "\r" ) ^ 0 )
- * L "}}"
- * EOL
- ) ^ 0
- * L "{\\PitonStyle{String.Long}{"
- * C ( ( 1 - P "\"\"\"" - P "\r" ) ^ 0 )
- )
- * C ( P "\"\"\"" )
- * L "}}"
-
-
-
-local LongString = SingleLongString + DoubleLongString
-
-
-local Expression =
- P { "E" ,
- E = ( 1 - S "{}()[]\r," ) ^ 0
- * (
- ( P "{" * V "F" * P "}"
- + P "(" * V "F" * P ")"
- + P "[" * V "F" * P "]" ) * ( 1 - S "{}()[]\r," ) ^ 0
- ) ^ 0 ,
- F = ( 1 - S "{}()[]\r\"'" ) ^ 0
- * ( (
- P "'" * (P "\\'" + 1 - S"'\r" )^0 * P "'"
- + P "\"" * (P "\\\"" + 1 - S"\"\r" )^0 * P "\""
- + P "{" * V "F" * P "}"
- + P "(" * V "F" * P ")"
- + P "[" * V "F" * P "]"
- ) * ( 1 - S "{}()[]\r\"'" ) ^ 0 ) ^ 0 ,
- }
-
-local Param = SkipSpace * K ( identifier , '' ) * SkipSpace
- * ( K ( P "=" * Expression , 'InitialValues' )
- + K ( P ":" , '' ) * SkipSpace * K ( letter^1 , 'Name.Type' ))
- + SkipSpace * K ( alphanum ^ 1 , '' ) * SkipSpace
-
-local Params = Param * ( K ( P "," , '' ) * Param ) ^ 0
-
-local StringDoc = K ( P "\"\"\"" , 'String.Doc' )
- * ( K ( (1 - P "\"\"\"" - P "\r" ) ^ 0 , 'String.Doc' ) * EOL ) ^ 0
- * K ( ( 1 - P "\"\"\"" - P "\r" ) ^ 0 * P "\"\"\"" , 'String.Doc' )
- + K ( P "'''" , 'String.Doc' )
- * ( K ( (1 - P "'''" - P "\r")^0 , 'String.Doc' ) * EOL ) ^ 0
- * K ( ( 1 - P "'''" - P "\r")^0 * P "'''" , 'String.Doc' )
-
-local CommentMath = P "$" * K ( ( 1 - S "$\r" ) ^ 1 , 'Comment.Math' ) * P "$"
-
-
-local Comment = L ( "{\\pitonStyleComment {" )
- * C ( P "#" ) * ( CommentMath + C ( ( 1 - S "$\r" ) ^ 1 ) ) ^ 0
- * L ( "}}" )
- * ( EOL + -1 )
-
-local CommentLaTeX =
- P "##"
- * L "{\\PitonStyle{Comment.LaTeX}{\\ignorespaces"
- * Ct ( C ( ( 1 - P "\r" ) ^ 0 ) )
- * L "}}"
- * ( EOL + -1 )
-
-local DefFunction =
- K ( P "def" , 'Keyword' )
- * Space
- * K ( identifier , 'Name.Function' )
- * ( SkipSpace * K ( P "(" , '' ) * Params * K ( P ")" , '' ) ) ^ -1
- * ( SkipSpace
- * K ( ( 1 - S ":\r" )^0 , 'Post.Function' )
- * K ( P ":" , 'Keyword' )
- * SkipSpace
- * ( EOL + CommentLaTeX + Comment )
- * SkipSpace
- * StringDoc ) ^ -1
-
-local ItemDict = ShortString * SkipSpace * C ( P ":" ) * K ( Expression , 'Dict.Value' )
-
-local ItemOfSet = SkipSpace * ( ItemDict + ShortString ) * SkipSpace
-
-local Set = C ( P "{" )
- * ItemOfSet * ( C ( P "," ) * ItemOfSet ) ^ 0
- * C ( P "}" )
-
-
-local Operator = K ( P "!=" + P "==" + P "<<" + P ">>" + S "-~+/*%=<>&.@|" , 'Operator')
-
-local OperatorWord = K ( P "in" + P "is" + P "and" + P "or" + P "not" , 'Operator.Word')
-
-local SyntaxPython =
- ( ( space - P "\r" ) ^0 * P "\r" ) ^ -1 *
- ( ( space^1 * -1 )
- + EOL
- + Space
- + Escape
- + CommentLaTeX
- + LongString
- + Comment
- + ExceptionInConsole
- + Set
- + Delim
- + Class * ( Space + Punct + EOL )
- + Namespace * ( Space + Punct + EOL )
- + ImportAs
- + RaiseException
- + Keyword * ( Space + Punct + EOL )
- + DefFunction
- + ShortString
- + Decorator * ( Space + Punct + EOL )
- + Operator
- + OperatorWord * ( Space + Punct + EOL )
- + Builtin * ( Space + Punct + EOL )
- + Identifier
- + Number
- + Word
- ) ^0 * -1
-
-
-local MinimalSyntax =
- P { "S" ;
- S = K ( (1 - P "\r" ) ^ 0 , '') + EOL * S
- }
-
-
---- with cctab, all characters including spaces have catcode 12
-local cctab = luatexbase.catcodetables.CatcodeTableOther
-
-function Parse(code)
- local t = Ct(SyntaxPython) : match(code)
- if t then else t = Ct(MinimalSyntax) : match(code) end
- for i = 1 , #t do
- if type(t[i]) == 'string'
- then
- tex.sprint(cctab, t[i])
- else
- tex.sprint( t[i][1] )
- end
- end
-end
-
-
-
-
-function ParseFile(name)
- s = ''
- for line in io.lines(name) do s = s .. '\r' .. line end
- Parse(s)
-end
-
-
-function define_gobble_syntax(n)
- GobbleSyntax = ( 1 - P "\r" ) ^ (-n) * C ( ( 1 - P "\r" ) ^0 )
- * ( C ( P "\r" )
- * ( 1 - P "\r" ) ^ (-n)
- * C ( ( 1 - P "\r" ) ^0 )
- ) ^ 0
-end
-
-function GobbleParse(code)
- local t = Ct(GobbleSyntax):match(code)
- local new_code = ""
- for i = 1 , #t do
- new_code = new_code .. t[i]
- end
- Parse(new_code)
-end
-
-
-function min(x,y)
- if x <= y
- then return x
- else return y
- end
-end
-
-function add(acc,new_value)
- return acc + new_value
-end
-
-
---[[ The following LPEG returns as capture the minimal number of spaces at
-the beginning of the lines of code]]
-AutoGobbleSyntax =
- ( space ^ 0 * P "\r" ) ^ -1
- * Cf (
- (
- ( P " " ) ^ 0 * P "\r"
- +
- Cf ( Cc(0) * ( P " " * Cc(1) ) ^ 0 , add )
- * ( 1 - P " " ) * ( 1 - P "\r" ) ^ 0 * P "\r"
- ) ^ 0
- *
- ( Cf ( Cc(0) * ( P " " * Cc(1) ) ^ 0 , add )
- * ( 1 - P " " ) * ( 1 - P "\r" ) ^ 0 ) ^ -1 ,
- min
- )
-
-function AutoGobbleParse(code)
- local n = AutoGobbleSyntax:match(code)
- if n==0
- then Parse(code)
- else define_gobble_syntax(n)
- GobbleParse(code)
- end
-end
-
-
---[[ The following LPEG returns as capture the number of spaces at the last line,
-that is to say begin the \end{Piton} ]]
-
-EnvGobbleSyntax =
- ( ( 1 - P "\r" ) ^ 0 * P "\r" ) ^ 0
- * Cf ( Cc(0) * ( P " " * Cc(1) ) ^ 0 , add ) * -1
-
-function EnvGobbleParse(code)
- local n = EnvGobbleSyntax:match(code)
- if n==0
- then Parse(code)
- else define_gobble_syntax(n)
- GobbleParse(code)
- end
-end
-
-
-
-
-
-
-
-
-
-
-
-