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<H1> 10.1.2 Context Clauses - With Clauses</H1>
<DIV Class="Paranum"><FONT SIZE=-2>1</FONT></DIV>
<DIV Class="Normal"> A <FONT FACE="Arial, Helvetica">context_clause</FONT>
is used to specify the <FONT FACE="Arial, Helvetica">library_item</FONT>s
whose names are needed within a compilation unit. </DIV>
<H4 ALIGN=CENTER>Syntax</H4>
<DIV Class="Paranum"><FONT SIZE=-2>2</FONT></DIV>
<DIV Class="SyntaxIndented"><FONT FACE="Arial, Helvetica">context_clause<A NAME="I3714"></A>
::= </FONT>{<A NAME="I3715"></A><FONT FACE="Arial, Helvetica">context_item</FONT>}</DIV>
<DIV Class="Paranum"><FONT SIZE=-2>3</FONT></DIV>
<DIV Class="SyntaxIndented"><FONT FACE="Arial, Helvetica">context_item<A NAME="I3716"></A>
::= </FONT><A NAME="I3717"></A><FONT FACE="Arial, Helvetica">with_clause</FONT> | <A NAME="I3718"></A><FONT FACE="Arial, Helvetica">use_clause</FONT></DIV>
<DIV Class="Paranum"><FONT SIZE=-2>4</FONT></DIV>
<DIV Class="SyntaxIndented"><FONT FACE="Arial, Helvetica">with_clause<A NAME="I3719"></A>
::= </FONT><B>with</B> <I>library_unit_</I><A NAME="I3720"></A><FONT FACE="Arial, Helvetica">name</FONT> {, <I>library_unit_</I><A NAME="I3721"></A><FONT FACE="Arial, Helvetica">name</FONT>};</DIV>
<H4 ALIGN=CENTER>Name Resolution Rules</H4>
<DIV Class="Paranum"><FONT SIZE=-2>5</FONT></DIV>
<DIV Class="Normal"> <A NAME="I3722"></A>The <I>scope</I> of a <FONT FACE="Arial, Helvetica">with_clause</FONT>
that appears on a <FONT FACE="Arial, Helvetica">library_unit_declaration</FONT>
or <FONT FACE="Arial, Helvetica">library_unit_renaming_declaration</FONT>
consists of the entire declarative region of the declaration, which includes
all children and subunits. The scope of a <FONT FACE="Arial, Helvetica">with_clause</FONT>
that appears on a body consists of the body, which includes all subunits.
</DIV>
<DIV Class="Paranum"><FONT SIZE=-2>6</FONT></DIV>
<DIV Class="Normal"> <A NAME="I3723"></A><A NAME="I3724"></A>A <FONT FACE="Arial, Helvetica">library_item</FONT>
is <I>mentioned</I> in a <FONT FACE="Arial, Helvetica">with_clause</FONT>
if it is denoted by a <I>library_unit_</I><FONT FACE="Arial, Helvetica">name</FONT>
or a <FONT FACE="Arial, Helvetica">prefix</FONT> in the <FONT FACE="Arial, Helvetica">with_clause</FONT>.
</DIV>
<DIV Class="Paranum"><FONT SIZE=-2>7</FONT></DIV>
<DIV Class="Normal"> Outside its own declarative region, the declaration
or renaming of a library unit can be visible only within the scope of
a <FONT FACE="Arial, Helvetica">with_clause</FONT> that mentions it.
The visibility of the declaration or renaming of a library unit otherwise
follows from its placement in the environment. </DIV>
<H4 ALIGN=CENTER>Legality Rules</H4>
<DIV Class="Paranum"><FONT SIZE=-2>8</FONT></DIV>
<DIV Class="Normal"> If a <FONT FACE="Arial, Helvetica">with_clause</FONT>
of a given <FONT FACE="Arial, Helvetica">compilation_unit</FONT> mentions
a private child of some library unit, then the given <FONT FACE="Arial, Helvetica">compilation_unit</FONT>
shall be either the declaration of a private descendant of that library
unit or the body or subunit of a (public or private) descendant of that
library unit. </DIV>
<DIV Class="NotesHeader"><FONT SIZE=-1>NOTES</FONT></DIV>
<DIV Class="Paranum"><FONT SIZE=-2>9</FONT></DIV>
<DIV Class="Notes"><FONT SIZE=-1>3 A <FONT FACE="Arial, Helvetica">library_item</FONT>
mentioned in a <FONT FACE="Arial, Helvetica">with_clause</FONT> of a
compilation unit is visible within the compilation unit and hence acts
just like an ordinary declaration. Thus, within a compilation unit that
mentions its declaration, the name of a library package can be given
in <FONT FACE="Arial, Helvetica">use_clause</FONT>s and can be used to
form expanded names, a library subprogram can be called, and instances
of a generic library unit can be declared. If a child of a parent generic
package is mentioned in a <FONT FACE="Arial, Helvetica">with_clause</FONT>,
then the corresponding declaration nested within each visible instance
is visible within the compilation unit.</FONT></DIV>
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