# MathML 4 (legacy)
# ################

#     Copyright 1998-2022 W3C (MIT, ERCIM, Keio)
# 
#     Use and distribution of this code are permitted under the terms
#     W3C Software Notice and License
#     http://www.w3.org/Consortium/Legal/2002/copyright-software-20021231

default namespace m = "http://www.w3.org/1998/Math/MathML"

# MathML 4
include "mathml4.rnc" {

# unitless lengths
length-percentage = xsd:string {
  pattern = '\s*((-?[0-9]*([0-9]\.?|\.[0-9])[0-9]*(e[mx]|in|cm|mm|p[xtc]|%)?)|(negative)?((very){0,2}thi(n|ck)|medium)mathspace)\s*' 
}
}

# Removed MathML 1/2/3 elements

ContExp |= reln | fn | declare

reln = element reln {ContExp*}
fn = element fn {ContExp}
declare = element declare {attribute type {xsd:string}?,
                           attribute scope {xsd:string}?,
                           attribute nargs {xsd:nonNegativeInteger}?,
                           attribute occurrence {"prefix"|"infix"|"function-model"}?,
                           DefEncAtt, 
                           ContExp+}



# legacy attributes


mglyph.deprecatedattributes =
  attribute fontfamily {text}?,
  attribute index {integer}?,
  attribute mathvariant {"normal" | "bold" | "italic" | "bold-italic" | "double-struck" | "bold-fraktur" | "script" | "bold-script" | "fraktur" | "sans-serif" | "bold-sans-serif" | "sans-serif-italic" | "sans-serif-bold-italic" | "monospace" | "initial" | "tailed" | "looped" | "stretched"}?,
  attribute mathsize {"small" | "normal" | "big" | length-percentage}?

mglyph.attributes &= mglyph.deprecatedattributes

mstyle.deprecatedattributes =
  attribute veryverythinmathspace {length-percentage}?,
  attribute verythinmathspace {length-percentage}?,
  attribute thinmathspace {length-percentage}?,
  attribute mediummathspace {length-percentage}?,
  attribute thickmathspace {length-percentage}?,
  attribute verythickmathspace {length-percentage}?,
  attribute veryverythickmathspace {length-percentage}?

mstyle.attributes &= mstyle.deprecatedattributes


math.deprecatedattributes = attribute mode {xsd:string}?,
                            attribute macros {xsd:string}?

math.attributes &= math.deprecatedattributes


DeprecatedTokenAtt = 
  attribute fontfamily {text}?,
  attribute fontweight {"normal" | "bold"}?,
  attribute fontstyle {"normal" | "italic"}?,
  attribute fontsize {length-percentage}?,
  attribute color {color}?,
  attribute background {color}?,
  attribute mathsize {"small" | "normal" | "big" }?
					  
mstyle.attributes &= DeprecatedTokenAtt
mglyph.attributes &= DeprecatedTokenAtt
mn.attributes &= DeprecatedTokenAtt
mi.attributes &= DeprecatedTokenAtt
mo.attributes &= DeprecatedTokenAtt
mtext.attributes &= DeprecatedTokenAtt
mspace.attributes &= DeprecatedTokenAtt
ms.attributes &= DeprecatedTokenAtt

semantics.attributes &= DefEncAtt


# malignmark in tokens
token.content |= malignmark
# malignmark in mfrac etc
MathExpression |= MalignExpression

maligngroup.attributes &=
  attribute groupalign {"left" | "center" | "right" | "decimalpoint"}?

malignmark.attributes &=
  attribute edge {"left" | "right"}?

mstyle.generalattributes &=
  attribute edge {"left" | "right"}?

# groupalign
group-alignment = "left" | "center" | "right" | "decimalpoint"
group-alignment-list = list {group-alignment+}
group-alignment-list-list = xsd:string {
  pattern = '(\s*\{\s*(left|center|right|decimalpoint)(\s+(left|center|right|decimalpoint))*\})*\s*' }

mstyle.generalattributes &=
  attribute groupalign {group-alignment-list-list}?

mtable.attributes &=
  attribute groupalign {group-alignment-list-list}?

mtr.attributes &=
  attribute groupalign {group-alignment-list-list}?
		       
mtd.attributes &=
  attribute groupalign {group-alignment-list}?