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latex-api.xml
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latex-api.xml
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<?xml version="1.0" encoding="UTF-8"?>
<chapter version="5.1" xmlns="http://docbook.org/ns/docbook"
xmlns:xlink="http://www.w3.org/1999/xlink"
xmlns:xila="http://www.w3.org/2001/XInclude/local-attributes"
xmlns:xi="http://www.w3.org/2001/XInclude"
xmlns:trans="http://docbook.org/ns/transclusion"
xmlns:svg="http://www.w3.org/2000/svg"
xmlns:m="http://www.w3.org/1998/Math/MathML"
xmlns:html="http://www.w3.org/1999/xhtml"
xmlns:db="http://docbook.org/ns/docbook">
<title>Latex API</title>
<section>
<title>Latex Parameters: 'latex_registered_subjects'</title>
<synopsis>SYNTAX:
**latex_registered_subjects**(//parameter//, //decision//)</synopsis>
<itemizedlist>
<listitem>
<para><emphasis>parameter</emphasis> Name of particular latex
parameter</para>
</listitem>
<listitem>
<para><emphasis>decision</emphasis> Possible parameter's value</para>
</listitem>
</itemizedlist>
<para>Table to declare latex parameters along with all possible parameter
values - decisions.</para>
</section>
<section>
<title>Block's Demand: 'latex_scope_demand'</title>
<synopsis>SYNTAX:
**latex_scope_demand**(//scope-ref//, //parameter//)</synopsis>
<para>Declares demand for a given scope specified by
<emphasis>scope-ref</emphasis>. It initiates latex reasoning in order to
find satisfying decision for each demand.</para>
</section>
<section>
<title>Function's Demand: 'latex_fn_demand',
'latex_fn_demand_ordered'</title>
<synopsis>SYNTAX:
**latex_fn_demand**(//fn-ref//, //parameter//) (1)
**latex_fn_demand_ordered**(//fn-ref//, //parameter//, //id//) (2)</synopsis>
<itemizedlist>
<listitem>
<para><emphasis>fn-ref</emphasis> function reference</para>
</listitem>
<listitem>
<para><emphasis>parameter</emphasis> latex parameter</para>
</listitem>
<listitem>
<para><emphasis>id</emphasis> number of the parameter in function
signature's arguments list</para>
</listitem>
</itemizedlist>
<para>Latex reasoning determines which functions require additional
parameters during runtime. Table (2) holds the same data as (1) along with
additional field <emphasis>id</emphasis> to specify exact order of latex
parameters in the given function's signature.</para>
</section>
<section>
<title>Decisions: 'latex_decision', 'late(latex_decision)'</title>
<synopsis>SYNTAX:
**latex_decision**(//scope-ref//, //parameter//, //decision//);</synopsis>
<itemizedlist>
<listitem>
<para><emphasis>scope-ref</emphasis> code block reference</para>
</listitem>
<listitem>
<para><emphasis>parameter</emphasis> latex parameter</para>
</listitem>
<listitem>
<para><emphasis>decision</emphasis> latex decision</para>
</listitem>
</itemizedlist>
<para>Latex reasoning stores its output, found decisions, in this table.
Field <emphasis>decision</emphasis> specifies value of a latex parameter
<emphasis>parameter</emphasis> in a given code block denoted by
<emphasis>scope-ref</emphasis>. If some demand can't be satisfied and no
appropriate decision is found, compiler raises an error. Latex parameter
can have different values in different code blocks, thus
<emphasis>scope-ref</emphasis> is used as a guard.</para>
</section>
</chapter>
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