# $Id$

start = publidoc


publidoc = element publidoc {
   publidoc.attributes,
   publidoc.content
}

publidoc.attributes =
   version.attribute
version.attribute = attribute version { "1.0" }

publidoc.content =
   document
 | top.topic


# =============================================================================
#                                  Top level
# =============================================================================

# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ document ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

document = element document { document.attributes, document.content }

document.attributes =
   document.id.attribute
document.id.attribute = attribute xml:id { xsd:ID }

document.content =
   metadata?,
   (division+ | topic+)

# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ topic ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

top.topic = element topic { top.topic.attributes, topic.content }


# =============================================================================
#                               Metadata level
# =============================================================================

# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ metadata ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

metadata = element metadata { metadata.content }

metadata.content =
   title
 & subtitle?
 & author*
 & publisher?
 & language?
 & date?
 & place?
 & source*
 & subjectset?
 & abstract?
 & annotation*

# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ title, subtitle ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

title = element title { title.content }

title.content = inlines

subtitle = element subtitle { title.content }

# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ author, publisher ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

author = element author { author.content }

author.content =
   firstname?,
   lastname

publisher = element publisher { publisher.content }

publisher.content = inlines

# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Language ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

language = element language { language.attributes }

language.attributes = lang.attribute
lang.attribute = attribute xml:lang { xsd:language }

# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ place ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

place = element place { place.content }

place.content = inlines

# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ source ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

# ~~~~~~ source
source = element source {
   source.attributes,
   (  (attribute type { "book" }, source.content.book)
    | (attribute type { "file" })),
   source.content
}

source.attributes =
   source.id.attribute
source.id.attribute = attribute id { xsd:NMTOKEN }

source.content.book =
   title,
   pagenumber*
source.content =
   annotation*

# ~~~~~~ pagenumber
pagenumber = element pagenumber { pagenumber.attributes }

pagenumber.attributes =
   pagenumber.value.attribute
pagenumber.value.attribute = attribute value { pagenumber.value.enumeration }
pagenumber.value.enumeration = xsd:positiveInteger

# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ subject ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

# ~~~~~~ subjectset
subjectset = element subjectset { subjectset.content }

subjectset.content = subject+

# ~~~~~~ subject
subject = element subject { subject.attributes }

subject.attributes =
   subject.id.attribute
subject.id.attribute = attribute id { xsd:NMTOKEN }

# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ abstract ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

abstract = element abstract { abstract.content }

abstract.content =
   parag+

# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ annotation ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

annotation = element annotation { annotation.content }

annotation.content = inlines


# =============================================================================
#                                 Division level
# =============================================================================

# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ division ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

division = element division { division.content }

division.content =
   metadata?,
   (division+ | topic+)


# =============================================================================
#                               Component level
# =============================================================================

# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ topic ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

topic = element topic { topic.attributes, topic.content }

top.topic.attributes =
   topic.id.attribute
 & topic.type.attribute?
topic.attributes =
   topic.id.attribute?
 & topic.type.attribute?
topic.id.attribute = attribute xml:id { xsd:ID }
topic.type.attribute = attribute type { xsd:NCName }

topic.content =
   metadata?,
   section+


# =============================================================================
#                                 Section level
# =============================================================================

# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ section ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

section = element section { section.content, section.attributes }

section.content =
   metadata?,
   (section+
    | (parag | media)+)

section.attributes =
   status.attribute?
status.attribute = attribute status { xsd:NCName }


# =============================================================================
#                                 Block level
# =============================================================================

# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ parag ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

parag = element parag { parag.content }

parag.content =
   inlines
 & link*

# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ media ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

# ~~~~~~ media
media = element media { media.content }

media.content =
   image+,
   media.caption?

media.id.attribute = attribute id { xsd:NMTOKEN }

# ~~~~~~ caption
media.caption = element caption { media.caption.content }

media.caption.content =
   parag+

# ~~~~~~ image
image = element image { image.attributes, image.content }

image.attributes =
   media.id.attribute

image.content =
   copyright?

# ~~~~~~ copyright
copyright = element copyright { copyright.content }
copyright.content = inlines


# =============================================================================
#                                 Inline level
# =============================================================================

# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ inlines ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

inlines = mixed {
   sup*
 & sub*
 & romannum*
 & date*
 & name*
 & footnote*
 & foreign*
 & highlight*
}

# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ sub, sup ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

sup = element sup { inlines }

sub = element sub { inlines }

# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ romannum ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

romannum = element romannum { xsd:token {pattern = "([dlxvi]+)"} }

# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ date ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

date = element date { date.attributes, date.content }

date.attributes = date.of.attribute
date.of.attribute = attribute of { date.of.enumeration }
date.of.enumeration = "event" | "birth" | "death"

date.content = xsd:date | xsd:gYearMonth | xsd:gYear

# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ name ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

firstname = element firstname { inlines }

lastname = element lastname { inlines }

name = element name { name.attributes, name.content }

name.attributes =
   name.of.attribute?
name.of.attribute = attribute of { name.of.enumeration }
name.of.enumeration = "person" | "company" | "book" | "newspaper" | "party"

name.content = inlines

# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ footnote ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

footnote = element footnote { footnote.attributes, footnote.content }

footnote.attributes =
   footnote.label.attribute?
footnote.label.attribute = attribute label { text }

footnote.content =
   parag+

# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ foreign ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

foreign = element foreign { foreign.attributes, foreign.content }

foreign.attributes = lang.attribute?

foreign.content = inlines

# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ highlight ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

highlight = element highlight { highlight.content }

highlight.content = inlines

# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ link ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

link = element link { link.attributes, link.content }

link.attributes = empty

link.content = inlines