Note that if D requires the directive Dialect(D) as part of its syntax then this implies that any D-admissible document must have this directive. ?
A circular-stumbling out-of an admissible document within the a beneficial dialect, D, is actually a good semantics-retaining mapping in order to a document in almost any code L followed closely by good semantics-sustaining mapping throughout the L-file back again to an enthusiastic admissible D-document. Whenever you are semantically similar, the first in addition to bullet-tripped D-records doesn’t have to be the same.
cuatro.step 1 XML towards the RIF-FLD Language
RIF-FLD uses [XML1.0] for its XML syntax. The newest XML serialization for RIF-FLD try changing otherwise completely striped [ANF01]. A fully striped serialization views biker planet free app XML documents just like the things and you may splits every XML labels into the classification descriptors, entitled sort of labels, and possessions descriptors, titled character labels [TRT03]. We follow the customs of utilizing capitalized brands having method of labels and you will lowercase brands to have character labels.
The all-uppercase classes in the EBNF of the presentation syntax, such as Algorithm, become XML Schema groups in Appendix XML Schema for FLD. They are not visible in instance markup. The other classes as well as non-terminals and symbols (such as Can be obtained or =) become XML elements with optional attributes, as shown below.
To have capacity for resource, the original formulas are included over the top
The RIF serialization framework for the syntax of Section EBNF Grammar for the Presentation Syntax of RIF-FLD uses the following XML tags. While there is a RIF-FLD element tag for the Transfer directive and an attribute for the Dialect directive, there are none for the Ft and Prefix directives: they are handled as discussed in Section Mapping from the RIF-FLD Presentation Syntax to the XML Syntax.
Title away from an excellent prefix isn’t associated with an XML function, because it is treated via preprocessing once the chatted about in Point Mapping of your Non-annotated RIF-FLD Code.
The id and meta elements, which are expansions of the IRIMETA element, can occur optionally as the initial children of any Class element.
The XML syntax for symbol spaces uses the type attribute associated with the XML element Const. For instance, a literal in the xs:dateTime datatype is represented as 2007-11-23T-.
The xml:lang attribute, as defined by 2.12 Language Identification of XML 1.0 or its successor specifications in the W3C recommendation track, is optionally used to identify the language for the presentation of the Const to the user. It is allowed only in association with constants of the type rdf:plainLiteral. A compliant implementation MUST ignore the xml:lang attribute if the type of the Const is not rdf:plainLiteral.
This example suggests an enthusiastic XML serialization toward formulas when you look at the Analogy step 3. To possess greatest readability, we once more make use of the shortcut sentence structure discussed in [RIF-DTB].
This section defines a normative mapping, ?fld, from the presentation syntax of Section EBNF Grammar for the Presentation Syntax of RIF-FLD to the XML syntax of RIF-FLD. The mapping is given via tables where each row specifies the mapping of a particular syntactic pattern in the presentation syntax. These patterns appear in the first column of the tables and the bold-italic symbols represent metavariables. The second column represents the corresponding XML patterns, which may contain applications of the mapping ?fld to these metavariables. When an expression ?fld(metavar) occurs in an XML pattern in the right column of a translation table, it should be understood as a recursive application of ?fld to the presentation syntax represented by the metavariable. The XML syntax result of such an application is substituted for the expression ?fld(metavar). A sequence of terms containing metavariables with subscripts is indicated by an ellipsis. A metavariable or a well-formed XML subelement is marked as optional by appending a bold-italic question mark, ?, to its right.