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44 lines
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<!-- Common Lisp HyperSpec (TM), version 7.0 generated by Kent M. Pitman on Mon, 11-Apr-2005 2:31am EDT -->
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<TITLE>CLHS: Section 3.1.2.1.2</TITLE>
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<H1><A REV=MADE HREF="http://www.lispworks.com/"><IMG WIDTH=80 HEIGHT=65 ALT="[LISPWORKS]" SRC="../Graphics/LWSmall.gif" ALIGN=Bottom></A><A REL=TOP HREF="../Front/index.htm"><IMG WIDTH=237 HEIGHT=65 ALT="[Common Lisp HyperSpec (TM)]" SRC="../Graphics/CLHS_Sm.gif" ALIGN=Bottom></A> <A REL=PREV HREF="03_abaad.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Previous]" SRC="../Graphics/Prev.gif" ALIGN=Bottom></A><A REL=UP HREF="03_aba.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Up]" SRC="../Graphics/Up.gif" ALIGN=Bottom></A><A REL=NEXT HREF="03_ababa.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Next]" SRC="../Graphics/Next.gif" ALIGN=Bottom></A></H1>
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<H2>
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3.1.2.1.2 Conses as Forms</H2> <P>
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A <A REL=DEFINITION HREF="26_glo_c.htm#cons"><I>cons</I></A> that is used as a <A REL=DEFINITION HREF="26_glo_f.htm#form"><I>form</I></A> is called a <A REL=DEFINITION HREF="26_glo_c.htm#compound_form"><I>compound form</I></A>. <P>
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If the <A REL=DEFINITION HREF="26_glo_c.htm#car"><I>car</I></A> of that <A REL=DEFINITION HREF="26_glo_c.htm#compound_form"><I>compound form</I></A> is a <A REL=DEFINITION HREF="26_glo_s.htm#symbol"><I>symbol</I></A>, that <A REL=DEFINITION HREF="26_glo_s.htm#symbol"><I>symbol</I></A> is the <A REL=DEFINITION HREF="26_glo_n.htm#name"><I>name</I></A> of an <A REL=DEFINITION HREF="26_glo_o.htm#operator"><I>operator</I></A>, and the <A REL=DEFINITION HREF="26_glo_f.htm#form"><I>form</I></A> is either a <A REL=DEFINITION HREF="26_glo_s.htm#special_form"><I>special form</I></A>, a <A REL=DEFINITION HREF="26_glo_m.htm#macro_form"><I>macro form</I></A>, or a <A REL=DEFINITION HREF="26_glo_f.htm#function_form"><I>function form</I></A>, depending on the <A REL=DEFINITION HREF="26_glo_f.htm#function"><I>function</I></A> <A REL=DEFINITION HREF="26_glo_b.htm#binding"><I>binding</I></A> of the <A REL=DEFINITION HREF="26_glo_o.htm#operator"><I>operator</I></A> in the current <A REL=DEFINITION HREF="26_glo_l.htm#lexical_environment"><I>lexical environment</I></A>. If the <A REL=DEFINITION HREF="26_glo_o.htm#operator"><I>operator</I></A> is neither a <A REL=DEFINITION HREF="26_glo_s.htm#special_operator"><I>special operator</I></A> nor a <A REL=DEFINITION HREF="26_glo_m.htm#macro_name"><I>macro name</I></A>, it is assumed to be a <A REL=DEFINITION HREF="26_glo_f.htm#function_name"><I>function name</I></A> (even if there is no definition for such a <A REL=DEFINITION HREF="26_glo_f.htm#function"><I>function</I></A>). <P>
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If the <A REL=DEFINITION HREF="26_glo_c.htm#car"><I>car</I></A> of the <A REL=DEFINITION HREF="26_glo_c.htm#compound_form"><I>compound form</I></A> is not a <A REL=DEFINITION HREF="26_glo_s.htm#symbol"><I>symbol</I></A>, then that <A REL=DEFINITION HREF="26_glo_c.htm#car"><I>car</I></A> must be a <A REL=DEFINITION HREF="26_glo_l.htm#lambda_expression"><I>lambda expression</I></A>, in which case the <A REL=DEFINITION HREF="26_glo_c.htm#compound_form"><I>compound form</I></A> is a <A REL=DEFINITION HREF="26_glo_l.htm#lambda_form"><I>lambda form</I></A>. <P>
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How a <A REL=DEFINITION HREF="26_glo_c.htm#compound_form"><I>compound form</I></A> is processed depends on whether it is classified as a <A REL=DEFINITION HREF="26_glo_s.htm#special_form"><I>special form</I></A>, a <A REL=DEFINITION HREF="26_glo_m.htm#macro_form"><I>macro form</I></A>, a <A REL=DEFINITION HREF="26_glo_f.htm#function_form"><I>function form</I></A>, or a <A REL=DEFINITION HREF="26_glo_l.htm#lambda_form"><I>lambda form</I></A>. <P>
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<A REL=CHILD HREF="03_ababa.htm"><H2>
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3.1.2.1.2.1 Special Forms</H2></A><P>
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<A REL=CHILD HREF="03_ababb.htm"><H2>
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3.1.2.1.2.2 Macro Forms</H2></A><P>
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<A REL=CHILD HREF="03_ababc.htm"><H2>
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3.1.2.1.2.3 Function Forms</H2></A><P>
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<A REL=CHILD HREF="03_ababd.htm"><H2>
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3.1.2.1.2.4 Lambda Forms</H2></A><P><HR>
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