Sophie

Sophie

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mozart-1.4.0-1mdv2010.0.i586.rpm

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<HTML><HEAD><TITLE>Agent definitions: Agents.oz</TITLE><LINK href="ozdoc.css" rel="stylesheet" type="text/css"></HEAD><BODY><TABLE align="center" border="0" cellpadding="6" cellspacing="6" class="nav"><TR bgcolor="#DDDDDD"><TD><A href="node27.html#code.transportation.agentabstractions">&lt;&lt; Prev</A></TD><TD><A href="transportation.html">- Up -</A></TD><TD><A href="node29.html#code.transportation.country">Next &gt;&gt;</A></TD></TR></TABLE><DIV class="unnumbered" id="code.transportation.agents"><H3><A name="code.transportation.agents">Agent definitions: <CODE>Agents.oz</CODE></A></H3><P class="margin"><A href="Transport/Agents.oz">Source File</A></P><P> </P><BLOCKQUOTE><PRE><SPAN class="keyword">functor</SPAN>&nbsp;<BR>&nbsp;<BR><SPAN class="keyword">import</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;Tk<BR>&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;Plan(make:&nbsp;MakePlan)<BR>&nbsp;&nbsp;&nbsp;Widgets(history:&nbsp;History<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;truck:&nbsp;&nbsp;&nbsp;Truck)<BR>&nbsp;&nbsp;&nbsp;AgentAbstractions(new:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NewAgent<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;contract:&nbsp;Contract)<BR>&nbsp;&nbsp;&nbsp;&nbsp;<BR><SPAN class="keyword">export</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;Broker<BR>&nbsp;&nbsp;&nbsp;Company<BR>&nbsp;&nbsp;&nbsp;Driver<BR>&nbsp;<BR><SPAN class="keyword">define</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;<SPAN class="keyword">class</SPAN>&nbsp;<SPAN class="type">Broker</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">from</SPAN><SPAN class="type">&nbsp;Contract&nbsp;History</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">prop</SPAN>&nbsp;final<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">feat</SPAN>&nbsp;toplevel&nbsp;map<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">meth</SPAN>&nbsp;<SPAN class="functionname">init</SPAN>(toplevel:T)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Contract<SPAN class="keyword">,</SPAN>&nbsp;init<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;History<SPAN class="keyword">,</SPAN>&nbsp;init(master:T&nbsp;suffix:<SPAN class="string">'Broker'</SPAN>)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">self.</SPAN>toplevel&nbsp;=&nbsp;T<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">meth</SPAN>&nbsp;<SPAN class="functionname">announce</SPAN>(<SPAN class="keyword">...</SPAN>)&nbsp;=&nbsp;M<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A&nbsp;R<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">in</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Contract<SPAN class="keyword">,</SPAN>&nbsp;{Adjoin&nbsp;M&nbsp;announce(answer:?A&nbsp;reply:R)}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">if</SPAN>&nbsp;A<SPAN class="keyword">\=</SPAN>reject&nbsp;<SPAN class="keyword">then</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;R=grant<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;History<SPAN class="keyword">,</SPAN>&nbsp;M<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">meth</SPAN>&nbsp;<SPAN class="functionname">add</SPAN>(company:C&nbsp;driver:D<SPAN class="keyword">&lt;=unit</SPAN>&nbsp;<SPAN class="keyword">...</SPAN>)&nbsp;=&nbsp;M<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">if</SPAN>&nbsp;D<SPAN class="keyword">==unit</SPAN>&nbsp;<SPAN class="keyword">then</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Contract<SPAN class="keyword">,</SPAN>add(C&nbsp;{NewAgent&nbsp;Company<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;init(name:C&nbsp;toplevel:<SPAN class="keyword">self.</SPAN>toplevel)})<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">else</SPAN>&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{Contract<SPAN class="keyword">,</SPAN>get(C&nbsp;$)&nbsp;add(driver:D&nbsp;city:M<SPAN class="keyword">.</SPAN>city)}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">meth</SPAN>&nbsp;<SPAN class="functionname">remove</SPAN>(company:C&nbsp;driver:D<SPAN class="keyword">&lt;=unit</SPAN>)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">if</SPAN>&nbsp;D<SPAN class="keyword">==unit</SPAN>&nbsp;<SPAN class="keyword">then</SPAN>&nbsp;Contract<SPAN class="keyword">,</SPAN>remove(C)&nbsp;<SPAN class="keyword">else</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{Contract<SPAN class="keyword">,</SPAN>get(C&nbsp;$)&nbsp;remove(D)}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">meth</SPAN>&nbsp;<SPAN class="functionname">close</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;History<SPAN class="keyword">,</SPAN>&nbsp;&nbsp;tkClose<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Contract<SPAN class="keyword">,</SPAN>&nbsp;close<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;<BR>&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;<BR>&nbsp;<BR>&nbsp;&nbsp;&nbsp;<SPAN class="keyword">class</SPAN>&nbsp;<SPAN class="type">Company</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">from</SPAN><SPAN class="type">&nbsp;Contract&nbsp;History</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">prop</SPAN>&nbsp;final<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">feat</SPAN>&nbsp;toplevel<BR>&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">meth</SPAN>&nbsp;<SPAN class="functionname">init</SPAN>(toplevel:T&nbsp;name:C)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Contract<SPAN class="keyword">,</SPAN>&nbsp;init<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;History<SPAN class="keyword">,</SPAN>&nbsp;init(master:T&nbsp;suffix:C)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">self.</SPAN>toplevel&nbsp;=&nbsp;T<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">meth</SPAN>&nbsp;<SPAN class="functionname">announce</SPAN>(answer:A&nbsp;reply:R&nbsp;<SPAN class="keyword">...</SPAN>)&nbsp;=&nbsp;Announcement<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Contract<SPAN class="keyword">,</SPAN>&nbsp;Announcement<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;History<SPAN class="keyword">,</SPAN>&nbsp;&nbsp;Announcement<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">meth</SPAN>&nbsp;<SPAN class="functionname">add</SPAN>(driver:D&nbsp;city:C)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;T&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=&nbsp;<SPAN class="keyword">self.</SPAN>toplevel<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ThisDriver&nbsp;=&nbsp;{NewAgent&nbsp;Driver&nbsp;init(toplevel:T&nbsp;name:D&nbsp;city:C<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;truck:ThisTruck)}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ThisTruck&nbsp;&nbsp;=&nbsp;{NewAgent&nbsp;Truck&nbsp;&nbsp;init(parent:T<SPAN class="keyword">.</SPAN>map&nbsp;city:C<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;driver:ThisDriver)}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">in</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Contract<SPAN class="keyword">,</SPAN>&nbsp;add(D&nbsp;ThisDriver)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">meth</SPAN>&nbsp;<SPAN class="functionname">close</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;History<SPAN class="keyword">,</SPAN>&nbsp;&nbsp;tkClose<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Contract<SPAN class="keyword">,</SPAN>&nbsp;close<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;<BR>&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;<BR>&nbsp;<BR>&nbsp;&nbsp;&nbsp;<SPAN class="keyword">class</SPAN>&nbsp;<SPAN class="type">Driver</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">from</SPAN><SPAN class="type">&nbsp;History</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">prop</SPAN>&nbsp;final<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">feat</SPAN>&nbsp;truck<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">attr</SPAN>&nbsp;plan:nil&nbsp;status:idle<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">meth</SPAN>&nbsp;<SPAN class="functionname">init</SPAN>(toplevel:M&nbsp;name:N&nbsp;truck:T&nbsp;city:C)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;History<SPAN class="keyword">,</SPAN>&nbsp;init(master:M&nbsp;suffix:N)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;plan&nbsp;<SPAN class="keyword">&lt;-</SPAN>&nbsp;[act(city:C&nbsp;load:0&nbsp;lift:nil&nbsp;drop:nil)]<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;%%&nbsp;<SPAN class="comment">Create&nbsp;the&nbsp;truck<BR></SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">self.</SPAN>truck&nbsp;=&nbsp;T<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">meth</SPAN>&nbsp;<SPAN class="functionname">deiconify</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{Tk<SPAN class="keyword">.</SPAN>send&nbsp;wm(deiconify&nbsp;<SPAN class="keyword">self</SPAN>)}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">meth</SPAN>&nbsp;<SPAN class="functionname">announce</SPAN>(answer:A&nbsp;reply:R&nbsp;<SPAN class="keyword">...</SPAN>)&nbsp;=&nbsp;Announce<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NewPlan&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">in</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{MakePlan&nbsp;<SPAN class="keyword">@</SPAN>plan&nbsp;Announce&nbsp;?A&nbsp;?NewPlan}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">case</SPAN>&nbsp;R<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">of</SPAN>&nbsp;reject&nbsp;<SPAN class="keyword">then</SPAN>&nbsp;<SPAN class="keyword">skip</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">[]</SPAN>&nbsp;grant&nbsp;&nbsp;<SPAN class="keyword">then</SPAN>&nbsp;plan&nbsp;<SPAN class="keyword">&lt;-</SPAN>&nbsp;NewPlan<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;History<SPAN class="keyword">,</SPAN>&nbsp;Announce<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Driver<SPAN class="keyword">,</SPAN>&nbsp;&nbsp;check<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">meth</SPAN>&nbsp;<SPAN class="functionname">check</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">case</SPAN>&nbsp;<SPAN class="keyword">@</SPAN>status<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">of</SPAN>&nbsp;closed&nbsp;<SPAN class="keyword">then</SPAN>&nbsp;{<SPAN class="keyword">self.</SPAN>truck&nbsp;close}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">[]</SPAN>&nbsp;idle&nbsp;&nbsp;&nbsp;<SPAN class="keyword">then</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;N={Length&nbsp;<SPAN class="keyword">@</SPAN>plan}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">in</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">if</SPAN>&nbsp;N<SPAN class="keyword">&gt;</SPAN>1&nbsp;<SPAN class="keyword">then</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">case</SPAN>&nbsp;<SPAN class="keyword">@</SPAN>plan&nbsp;<SPAN class="keyword">of</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;act(load:Load&nbsp;<SPAN class="keyword">...</SPAN>)<SPAN class="keyword">|</SPAN>act(load:NewLoad&nbsp;city:Dst&nbsp;<SPAN class="keyword">...</SPAN>)<SPAN class="keyword">|</SPAN>_<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">then</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;plan&nbsp;<SPAN class="keyword">&lt;-</SPAN>&nbsp;<SPAN class="keyword">@</SPAN>plan<SPAN class="keyword">.</SPAN>2<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">if</SPAN>&nbsp;N<SPAN class="keyword">&gt;</SPAN>2&nbsp;<SPAN class="keyword">then</SPAN>&nbsp;status&nbsp;<SPAN class="keyword">&lt;-</SPAN>&nbsp;active<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<SPAN class="keyword">self.</SPAN>truck&nbsp;drive(Dst&nbsp;Load&nbsp;NewLoad)}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">[]</SPAN>&nbsp;active&nbsp;<SPAN class="keyword">then</SPAN>&nbsp;<SPAN class="keyword">skip</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">meth</SPAN>&nbsp;<SPAN class="functionname">getMessage</SPAN>($)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">case</SPAN>&nbsp;<SPAN class="keyword">@</SPAN>status<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">of</SPAN>&nbsp;closed&nbsp;<SPAN class="keyword">then</SPAN>&nbsp;close<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">[]</SPAN>&nbsp;idle&nbsp;<SPAN class="keyword">then</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;History<SPAN class="keyword">,</SPAN>&nbsp;print(<SPAN class="string">'idle.'</SPAN>)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;load(0)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">[]</SPAN>&nbsp;active&nbsp;<SPAN class="keyword">then</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">case</SPAN>&nbsp;<SPAN class="keyword">@</SPAN>plan&nbsp;<SPAN class="keyword">of</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;act(load:Load&nbsp;<SPAN class="keyword">...</SPAN>)<SPAN class="keyword">|</SPAN>act(load:NewLoad&nbsp;city:Dst&nbsp;<SPAN class="keyword">...</SPAN>)<SPAN class="keyword">|</SPAN>_<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">then</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;plan&nbsp;<SPAN class="keyword">&lt;-</SPAN>&nbsp;<SPAN class="keyword">@</SPAN>plan<SPAN class="keyword">.</SPAN>2<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">if</SPAN>&nbsp;{Length&nbsp;<SPAN class="keyword">@</SPAN>plan}<SPAN class="keyword">=&lt;</SPAN>1&nbsp;<SPAN class="keyword">then</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;status&nbsp;<SPAN class="keyword">&lt;-</SPAN>&nbsp;idle<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;drive(Dst&nbsp;Load&nbsp;NewLoad)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">meth</SPAN>&nbsp;<SPAN class="functionname">close</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;History<SPAN class="keyword">,</SPAN>&nbsp;tkClose<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">if</SPAN>&nbsp;<SPAN class="keyword">@</SPAN>status<SPAN class="keyword">==</SPAN>idle&nbsp;<SPAN class="keyword">then</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<SPAN class="keyword">self.</SPAN>truck&nbsp;close}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">else</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;status&nbsp;<SPAN class="keyword">&lt;-</SPAN>&nbsp;closed<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;<BR><SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;<BR></PRE></BLOCKQUOTE><P></P></DIV><TABLE 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