From 5b20300cc03102ef30de65eda421c22727244475 Mon Sep 17 00:00:00 2001
From: Andrea Asperti <andrea.asperti@unibo.it>
Date: Wed, 25 Jul 2001 08:55:25 +0000
Subject: [PATCH] "Recursive" notation for Z.

---
 helm/style/arith.xsl  | 97 +++++++++++++++++++++++++++++++++++++++++++
 helm/style/proofs.xsl | 21 +++++-----
 2 files changed, 107 insertions(+), 11 deletions(-)

diff --git a/helm/style/arith.xsl b/helm/style/arith.xsl
index 6393d2722..e436df28c 100644
--- a/helm/style/arith.xsl
+++ b/helm/style/arith.xsl
@@ -183,4 +183,101 @@
    </xsl:call-template>
 </xsl:template>
 
+<!-- POS, NEG e ZERO -->
+
+<xsl:template match="APPLY[MUTCONSTRUCT[position()=1 and @uri='cic:/Coq/ZArith/fast_integer/fast_integers/Z.ind' and @noConstr='2'] and count(*)=2]" mode="pure">
+   <xsl:apply-templates select="*[2]" mode="Zpositive">
+    <xsl:with-param name="base" select="0"/>
+    <xsl:with-param name="exp" select="1"/>
+    <xsl:with-param name="iden" select="*[2]/@id"/>
+   </xsl:apply-templates>
+</xsl:template>
+ 
+<xsl:template match="APPLY[MUTCONSTRUCT[position()=1 and @uri='cic:/Coq/ZArith/fast_integer/fast_integers/Z.ind' and @noConstr='3'] and count(*)=2]" mode="pure">
+   <m:apply helm:xref="{@id}">
+    <m:minus definitionURL="{*[1]/@uri}" helm:xref="{*[1]/@id}"/>
+    <xsl:apply-templates select="*[2]" mode="Zpositive">
+     <xsl:with-param name="base" select="0"/>
+     <xsl:with-param name="exp" select="1"/>
+     <xsl:with-param name="iden" select="*[2]/@id"/>
+    </xsl:apply-templates>
+   </m:apply>
+</xsl:template>
+
+<xsl:template match="MUTCONSTRUCT[@uri='cic:/Coq/ZArith/fast_integer/fast_integers/Z.ind' and @noConstr='1']" mode="pure">
+   <m:ci definitionURL="{@uri}" helm:xref="{@id}">0</m:ci>
+</xsl:template>
+
+<!-- prova di notazione per positive -->
+
+<xsl:template match="APPLY[MUTCONSTRUCT[position()=1 and @uri='cic:/Coq/ZArith/fast_integer/fast_integers/positive.ind']]" mode="pure">
+   <xsl:apply-templates select="." mode="Zpositive">
+    <xsl:with-param name="base" select="0"/>
+    <xsl:with-param name="exp" select="1"/>
+    <xsl:with-param name="iden" select="@id"/>
+   </xsl:apply-templates>
+</xsl:template>
+
+<xsl:template match="*" mode="Zpositive">
+ <xsl:param name="base" select="0"/>
+ <xsl:param name="exp" select="1"/>
+ <xsl:param name="iden" select="''"/>
+ <xsl:choose>
+  <xsl:when test="name()='APPLY' and MUTCONSTRUCT[position()=1 and @uri='cic:/Coq/ZArith/fast_integer/fast_integers/positive.ind' and @noConstr='1']">
+   <xsl:apply-templates select="*[2]" mode="Zpositive">
+    <xsl:with-param name="base" select="$base + $exp"/>
+    <xsl:with-param name="exp" select="2 * $exp"/>
+    <xsl:with-param name="iden" select="$iden"/>
+   </xsl:apply-templates>
+  </xsl:when>
+  <xsl:when test="name()='APPLY' and MUTCONSTRUCT[position()=1 and @uri='cic:/Coq/ZArith/fast_integer/fast_integers/positive.ind' and @noConstr='2']">
+   <xsl:apply-templates select="*[2]" mode="Zpositive">
+    <xsl:with-param name="base" select="$base"/>
+    <xsl:with-param name="exp" select="2 * $exp"/>
+    <xsl:with-param name="iden" select="$iden"/>
+   </xsl:apply-templates>
+  </xsl:when>
+  <xsl:when test="name()='MUTCONSTRUCT' and @uri='cic:/Coq/ZArith/fast_integer/fast_integers/positive.ind' and @noConstr='3'">
+   <m:ci helm:xref="{$iden}"><xsl:value-of select="$base + $exp"/></m:ci>
+  </xsl:when>
+  <xsl:otherwise>
+   <xsl:choose>
+    <xsl:when test="$base = 0">
+     <xsl:choose>
+      <xsl:when test="$exp = 1">
+       <m:ci helm:xref="{$iden}"><xsl:value-of select="$exp"/></m:ci>
+      </xsl:when>
+      <xsl:otherwise>
+       <m:apply helm:xref="{$iden}">
+        <m:times/>
+        <m:ci><xsl:value-of select="$exp"/></m:ci>
+        <xsl:apply-templates select="." mode="pure"/>
+       </m:apply>
+      </xsl:otherwise>
+     </xsl:choose>
+    </xsl:when>
+    <xsl:otherwise>
+     <m:apply helm:xref="{$iden}">
+      <m:plus/>
+      <m:ci><xsl:value-of select="$base"/></m:ci>
+      <xsl:choose>
+       <xsl:when test="$exp = 1">
+        <m:ci><xsl:value-of select="$exp"/></m:ci>
+       </xsl:when>
+       <xsl:otherwise>
+        <m:apply helm:xref="{$iden}">
+         <m:times/>
+         <m:ci><xsl:value-of select="$exp"/></m:ci>
+         <xsl:apply-templates select="." mode="pure"/>
+        </m:apply>
+       </xsl:otherwise>
+      </xsl:choose>
+     </m:apply>
+    </xsl:otherwise>
+   </xsl:choose>
+  </xsl:otherwise>
+ </xsl:choose>
+</xsl:template>
+
+
 </xsl:stylesheet>
diff --git a/helm/style/proofs.xsl b/helm/style/proofs.xsl
index b35968891..9fd99d5d1 100644
--- a/helm/style/proofs.xsl
+++ b/helm/style/proofs.xsl
@@ -479,17 +479,18 @@
     <m:ci>.</m:ci>
    </xsl:otherwise>
    </xsl:choose>
- <xsl:apply-templates mode="previous" select="following-sibling::*[1]"/>
+ <xsl:apply-templates mode="erase" select="following-sibling::*[1]"/>
 </xsl:template>
 
 <xsl:template match="*" mode="previous">
  <xsl:choose>
-  <xsl:when test="$naturalLanguage='yes' and(@sort='Prop' and (name(.)='LAMBDA' or name(.)='LETIN' or name(.)='APPLY' or name(.)='MUTCASE' or name(.)='FIX' or name(.)='COFIX'))">
+  <xsl:when test="$naturalLanguage='yes' and @sort='Prop' and (name(.)='LAMBDA' or name(.)='LETIN' or name(.)='APPLY' or name(.)='MUTCASE' or name(.)='FIX' or name(.)='COFIX')">
    <m:ci>previous</m:ci>
   </xsl:when>
   <xsl:otherwise>
+   <!-- forse bisognerebbe trattare solo l'elemento di testa -->
    <xsl:choose>
-   <xsl:when test="@sort='Prop' or $naturalLanguage='no' ">
+   <xsl:when test="@sort='Prop' or $naturalLanguage='no'">
     <xsl:apply-templates mode="pure" select="."/>
    </xsl:when>
    <xsl:otherwise>
@@ -506,8 +507,6 @@
  <xsl:param name="n" select="1"/>
  <xsl:variable name="id" select="@id"/>
  <xsl:choose>
-  <!-- <xsl:when test="key('typeid',@id)"> -->
-  <!-- <xsl:when test="$InnerTypes/InnerTypes/TYPE[@of=$id]"> -->
   <xsl:when test="$naturalLanguage='yes' and @sort='Prop' and (name(.)='LAMBDA' or name(.)='LETIN' or name(.)='APPLY' or name(.)='MUTCASE' or name(.)='FIX' or name(.)='COFIX')">
    <m:ci>
     <xsl:call-template name="insert_subscript"><xsl:with-param name="node_value"><xsl:value-of select="concat('h',$n)"/></xsl:with-param></xsl:call-template>
@@ -518,12 +517,12 @@
   </xsl:when>
   <xsl:otherwise>
    <xsl:choose>
-   <xsl:when test="@sort='Prop' or $naturalLanguage='no'">
-    <xsl:apply-templates mode="pure" select="."/>
-   </xsl:when>
-   <xsl:otherwise>
-    <m:ci>.</m:ci>
-   </xsl:otherwise>
+    <xsl:when test="name()='REL' or @sort='Prop' or $naturalLanguage='no'">
+     <xsl:apply-templates mode="pure" select="."/>
+    </xsl:when>
+    <xsl:otherwise>
+     <m:ci>.</m:ci>
+    </xsl:otherwise>
    </xsl:choose>
    <!-- <xsl:apply-templates mode="pure" select="."/> -->
    <xsl:apply-templates mode="flat" select="following-sibling::*[1]">
-- 
2.39.2