70 lines
1.8 KiB
Standard ML
70 lines
1.8 KiB
Standard ML
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(** very simple structure defining basix xml schema types. *)
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structure XML_Schema =
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struct
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(* for simplicity: *)
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(**
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* XML namespace NCName.
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* the basic grammar is:
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* NCName ::= (Letter | '_') (Letter | Digit | '.' | '-' | '_')*
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*)
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type NCName = string
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(**
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* XML namespace QName, i.e., a NCName with optionally a namespace prefix.
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* the basic grammar is: QName ::= (NCName ':')? NCName
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*)
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type QName = string
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type anyURI = string (* a URI like "http://www.example.com/file.html#id5"*)
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type xsdElement = { name : string,
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typ : string }
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type xsdSequence = xsdElement list
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datatype xsdType = SimpleType of xsdElement
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| ComplexType of xsdComplexType
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withtype xsdComplexType = { name : string,
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sequence : xsdType list
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}
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type xsdSchema = { attributeFormDefault: string,
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elementFormDefault: string,
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targetNamespace: string,
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definitions: xsdType list
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}
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end
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structure XML_Schema2Xml =
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struct
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open XML_Schema
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fun xsdType2Xml (ComplexType ct) =
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XmlTree.Node (("xsd:complexType",[("name", #name ct)
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]),
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[
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XmlTree.Node (("xsd:sequence",[]),
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map xsdType2Xml (#sequence ct)
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)
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]
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)
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| xsdType2Xml (SimpleType st) =
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XmlTree.Node (("xsd:element",[("name",#name st),("type",#typ st)]),[])
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fun xsdSchema2Xml (schema:xsdSchema) =
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XmlTree.Node (("xsd:schema",[("attributeFormDefault",#attributeFormDefault schema),
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("elementFormDefault", #elementFormDefault schema),
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("targetNamespace", #targetNamespace schema)
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]),
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map xsdType2Xml (#definitions schema))
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end
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