From: Claudio Sacerdoti Coen <claudio.sacerdoticoen@unibo.it>
Date: Wed, 20 Dec 2006 22:39:19 +0000 (+0000)
Subject: Tactic cases documented
X-Git-Tag: make_still_working~6576
X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=commitdiff_plain;h=acbf7b2ffb8646634928895024cd9020e1f265ab;p=helm.git

Tactic cases documented
---

diff --git a/helm/software/matita/help/C/sec_tactics.xml b/helm/software/matita/help/C/sec_tactics.xml
index ff8d099c0..aa9610df0 100644
--- a/helm/software/matita/help/C/sec_tactics.xml
+++ b/helm/software/matita/help/C/sec_tactics.xml
@@ -215,6 +215,52 @@
       </variablelist>
     </para>
   </sect1>
+  <sect1 id="tac_cases">
+    <title>cases</title>
+    <titleabbrev>cases</titleabbrev>
+    <para><userinput>
+     cases t hyps
+    </userinput></para>
+    <para>
+      <variablelist>
+        <varlistentry role="tactic.synopsis">
+          <term>Synopsis:</term>
+          <listitem>
+            <para>
+	     <emphasis role="bold">cases</emphasis>
+	     &term; [<emphasis role="bold">(</emphasis>[&id;]…<emphasis role="bold">)</emphasis>]
+	    </para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term>Pre-conditions:</term>
+          <listitem>
+            <para>
+	     <command>t</command> must inhabit an inductive type
+	    </para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term>Action:</term>
+          <listitem>
+            <para>
+	     It proceed by cases on <command>t</command>. The new generated
+             hypothesis in each branch are named according to
+             <command>hyps</command>.
+	    </para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term>New sequents to prove:</term>
+          <listitem>
+            <para>One new sequent for each constructor of the type of
+             <command>t</command>. Each sequent has a new hypothesis for
+             each argument of the constructor.</para>
+          </listitem>
+        </varlistentry>
+      </variablelist>
+    </para>
+  </sect1>
   <sect1 id="tac_clear">
     <title>clear</title>
     <titleabbrev>clear</titleabbrev>
diff --git a/helm/software/matita/help/C/tactics_quickref.xml b/helm/software/matita/help/C/tactics_quickref.xml
index 566d185d0..47e237e86 100644
--- a/helm/software/matita/help/C/tactics_quickref.xml
+++ b/helm/software/matita/help/C/tactics_quickref.xml
@@ -31,6 +31,14 @@
         <entry>|</entry>
         <entry><link linkend="tac_auto"><emphasis role="bold">auto</emphasis></link> <emphasis><link linkend="grammar.autoparams">auto_params</link></emphasis></entry>
       </row>
+      <row>
+        <entry/>
+        <entry>|</entry>
+        <entry>
+	     <link linkend="tac_cases"><emphasis role="bold">cases</emphasis></link>
+	     <emphasis><link linkend="grammar.term">term</link></emphasis> [<emphasis role="bold">(</emphasis>[<emphasis><link linkend="grammar.id">id</link></emphasis>]…<emphasis role="bold">)</emphasis>]
+	    </entry>
+      </row>
       <row>
         <entry/>
         <entry>|</entry>