X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fstyle%2Finductive.xsl;fp=helm%2Fstyle%2Finductive.xsl;h=0000000000000000000000000000000000000000;hb=bb2953675ebb08267186029b18bc3fdca9c137df;hp=83569d751660cf0008629f29c8986d149b2f0441;hpb=1cfcea66d7394a785ec439cd6b03497b276918c4;p=helm.git

diff --git a/helm/style/inductive.xsl b/helm/style/inductive.xsl
deleted file mode 100644
index 83569d751..000000000
--- a/helm/style/inductive.xsl
+++ /dev/null
@@ -1,407 +0,0 @@
-<?xml version="1.0"?>
-
-<!-- Copyright (C) 2000, HELM Team                                     -->
-<!--                                                                   -->
-<!-- This file is part of HELM, an Hypertextual, Electronic            -->
-<!-- Library of Mathematics, developed at the Computer Science         -->
-<!-- Department, University of Bologna, Italy.                         -->
-<!--                                                                   -->
-<!-- HELM is free software; you can redistribute it and/or             -->
-<!-- modify it under the terms of the GNU General Public License       -->
-<!-- as published by the Free Software Foundation; either version 2    -->
-<!-- of the License, or (at your option) any later version.            -->
-<!--                                                                   -->
-<!-- HELM is distributed in the hope that it will be useful,           -->
-<!-- but WITHOUT ANY WARRANTY; without even the implied warranty of    -->
-<!-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the     -->
-<!-- GNU General Public License for more details.                      -->
-<!--                                                                   -->
-<!-- You should have received a copy of the GNU General Public License -->
-<!-- along with HELM; if not, write to the Free Software               -->
-<!-- Foundation, Inc., 59 Temple Place - Suite 330, Boston,            -->
-<!-- MA  02111-1307, USA.                                              -->
-<!--                                                                   -->
-<!-- For details, see the HELM World-Wide-Web page,                    -->
-<!-- http://cs.unibo.it/helm/.                                         -->
-
-<!--******************************************************************--> 
-<!-- XSLT version 0.1 of CIC inductive objects to MathML content:     -->
-<!-- First draft: March 2001, Andrea asperti                          -->
-<!--******************************************************************-->
-
-
-<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
-                              xmlns:m="http://www.w3.org/1998/Math/MathML"
-                              xmlns:helm="http://www.cs.unibo.it/helm">
-
-
-<xsl:template mode="inductive" match="APPLY">
- <xsl:param name="inductive_def_uri" select="''"/>
- <xsl:param name="inductive_def" select="/.."/>
- <xsl:param name="inductive_def_index" select="1"/>
- <xsl:param name="inductive_def_name" select="''"/>
- <xsl:param name="section_params" select="0"/>
- <!-- expected_args_type contains the types of the arguments expected by
-      the induction principle -->
- <xsl:variable name="InductiveTypeUrl"><xsl:call-template name="URLofURI4getter"><xsl:with-param name="uri" select="*[1]/@uri"/></xsl:call-template></xsl:variable>
- <xsl:variable name="expected_args_types" 
-	select="document($InductiveTypeUrl)/Definition/type//PROD[not(ancestor::source)]/source/*[1]"/>
- <xsl:variable name="no_expected_args" select="count($expected_args_types)"/>
- <xsl:variable name="actual_arguments" select="*[position()>(1+$section_params)]"/>
- <!-- First check that the induction principle is applied to the
-      expected number of arguments -->
- <xsl:choose>
-  <xsl:when test="$no_expected_args = count($actual_arguments)">
-   <!-- Now check that each actual argument starts with the
-        expected number of lambda abstractions -->
-   <xsl:variable name="argsOK"> 
-    <xsl:call-template name="check_args">
-     <xsl:with-param name="arg_types" select="$expected_args_types"/>
-     <xsl:with-param name="actual_args" select="$actual_arguments"/>
-    </xsl:call-template>
-   </xsl:variable>
-   <xsl:choose>
-    <!-- il semplice test $argsOK non funziona -->
-    <xsl:when test="string($argsOK) = 'true'">
-     <!-- arguments are in the expected form: we create a
-          "by_induction" content element -->
-     <!-- no_params is the number of paramters in square brackets -->
-     <xsl:variable name="no_params" 
-      select="$inductive_def/@noParams"/>
-     <!-- the inductive property is the first argument following
-          the parameters  -->
-     <xsl:variable name="inductive_property" 
-               select="$actual_arguments[1 + $no_params]"/>
-     <xsl:variable name="tail_args" 
-      select="$actual_arguments[position()> (1 + $no_params)]"/>
-     <!-- inductive_type contains the right inductive type in the
-          mutual inductive definition -->
-     <xsl:variable name="inductive_type" 
-      select="$inductive_def/InductiveType[position()=$inductive_def_index]"/>
-     <xsl:variable name="no_constructors" 
-      select="count($inductive_type/Constructor)"/>
-     <!-- each case has a single argument -->
-     <xsl:variable name="args_for_cases" 
-      select="$tail_args[($no_constructors + 1) > position()]"/>
-     <!-- extra_args contains the remaining arguments; the LAST one
-          of them is the argument we are inductively arguing on -->
-     <xsl:variable name="extra_args" 
-      select="$tail_args[position()> $no_constructors]"/>
-     <m:apply>
-      <m:csymbol>by_induction</m:csymbol>
-      <!-- the first (i.e. second) argument of by_induction
-           is the uri of the inductive definition -->
-      <m:ci><xsl:value-of select="$inductive_def_uri"/></m:ci>
-      <!-- next, we have the inductive property, currently not
-           used for rendering (it could be omitted??) -->
-      <xsl:apply-templates mode="pure" select="$inductive_property"/>
-      <!-- each case has its own "inductive_case" element -->
-      <!-- the inductive case element is composed by:
-           * "case_lhs" element, containing the constructor name applied
-              to its arguments. The arguments are abstraction variables
-              (with types) got form the initial lambdas of the argument
-              for the case.
-           * "induction_hypothesis" element, containg the induction 
-              hypothesis. Again, these are abstraction variables
-              (with types) got form the initial lambdas of the argument
-              for the case.
-           * body of the case, without specific markup.
-       -->
-      <xsl:for-each select="$inductive_type/Constructor">
-       <xsl:variable name="pos" select="position()"/>
-       <xsl:variable name="current_arg" 
-                     select="$args_for_cases[position()=$pos]"/>
-       <m:apply>
-        <m:csymbol>inductive_case</m:csymbol>
-        <m:apply>
-         <m:csymbol>case_lhs</m:csymbol>
-         <m:ci definitionURL="{$inductive_def_uri}">
-          <xsl:value-of select="@name"/>
-         </m:ci>     
-         <xsl:call-template name="get_constructor_args">
-          <xsl:with-param name="no_params" 
-               select="$no_params"/>
-          <xsl:with-param name="constructor_arity" 
-               select="*[1]"/>
-          <xsl:with-param name="actual_arg" 
-               select="$current_arg"/>
-          <xsl:with-param name="inductive_def_name" 
-               select="$inductive_def_name"/>
-          </xsl:call-template>
-        </m:apply>
-        <m:apply>
-         <m:csymbol>induction_hypothesis</m:csymbol>
-         <xsl:call-template name="get_induction_hypothesis">
-          <xsl:with-param name="no_params" 
-               select="$no_params"/>
-          <xsl:with-param name="constructor_arity" 
-               select="*[1]"/>
-          <xsl:with-param name="actual_arg" 
-               select="$current_arg"/>
-          <xsl:with-param name="inductive_def_name" 
-               select="$inductive_def_name"/>
-         </xsl:call-template>
-        </m:apply>
-        <xsl:call-template name="get_body">
-         <xsl:with-param name="no_params" 
-               select="$no_params"/>
-         <xsl:with-param name="constructor_arity" 
-               select="*[1]"/>
-         <xsl:with-param name="actual_arg" select="$current_arg"/>
-         <xsl:with-param name="inductive_def_name" 
-               select="$inductive_def_name"/>
-        </xsl:call-template>
-       </m:apply>
-      </xsl:for-each>
-      <!-- the inductive argument is the last argument of extra-args -->
-      <m:apply>
-       <m:csymbol>extra_args</m:csymbol>
-       <xsl:apply-templates mode="pure" select="$extra_args"/>
-      </m:apply>
-     </m:apply>
-    </xsl:when>
-    <xsl:otherwise>
-     <xsl:apply-templates mode="letin" select="."/>
-    </xsl:otherwise>
-   </xsl:choose>
-  </xsl:when>
-  <xsl:otherwise>
-   <xsl:apply-templates mode="letin" select="."/>
-  </xsl:otherwise>
- </xsl:choose>
-</xsl:template>
-
-<!-- check_args checks that the number of lambda abstractions
-     of each actual parameter is GREATER OR EQUAL to the number
-     or products of the corresponding formal parameter of the
-     induction principles. That is, that each argument is 
-     sufficiently eta-expanded.
-     If this is not the case, not good rendering looks possible.
-     Check_args returns a boolean. 
-   -->
-<xsl:template name="check_args">
- <xsl:param name="arg_types" select="/.."/>
- <xsl:param name="actual_args" select="/.."/>
- <xsl:param name="bool_var" select="true()"/>
- <xsl:choose>
-  <xsl:when test="count($arg_types) = 0">
-    <xsl:value-of select="$bool_var"/>
-  </xsl:when>
-  <xsl:otherwise>
-   <xsl:variable name="no_expected_arg_of_arg">
-    <xsl:apply-templates mode="count_arity" select="$arg_types[1]">
-     <xsl:with-param name="what" select="'PROD'"/>
-    </xsl:apply-templates>
-   </xsl:variable>
-   <xsl:variable name="no_actual_abst_of_arg"> 
-    <xsl:apply-templates mode="count_arity" select="$actual_args[1]">
-     <xsl:with-param name="what" select="'LAMBDA'"/>
-    </xsl:apply-templates>
-   </xsl:variable>
-   <!-- REPLACE WITH EQUALITY ???? -->
-   <xsl:variable name="test_arg" 
-    select="$no_actual_abst_of_arg >= $no_expected_arg_of_arg"/> 
-   <xsl:call-template name="check_args">
-    <xsl:with-param name="arg_types" select="$arg_types[position()>1]"/>
-    <xsl:with-param name="actual_args" select="$actual_args[position()>1]"/>
-    <xsl:with-param name="bool_var" select="($bool_var and $test_arg)"/>
-   </xsl:call-template> 
-  </xsl:otherwise>
- </xsl:choose>
-</xsl:template>
-
-<!-- count_arity counts the number of head lambda (or prod) -->
-<xsl:template mode="count_arity" match="*">
- <xsl:param name="what" select="'LAMBDA'"/>
- <xsl:param name="num" select="0"/>
- <!-- MANCANO I CAST ??? -->
- <xsl:choose>
-  <xsl:when test="name(.) = $what">
-   <xsl:apply-templates mode="count_arity" select="target/*[1]">
-    <xsl:with-param name="what" select="$what"/>
-    <xsl:with-param name="num" select="$num+1"/>
-   </xsl:apply-templates>
-  </xsl:when>
-  <xsl:otherwise>
-   <xsl:value-of select="$num"/>
-  </xsl:otherwise>
- </xsl:choose>
-</xsl:template>
-
-<!-- The following three functions are essentially identical
-     in their recursive structure.
-     The problem is that of decomposing an actual argument for
-     a case in three parts: 
-     * constructor variables
-     * induction hypothesis
-     * body
-     To this aim we must proceed in parallel with the type of
-     the constructor: if the type contains a prod, then the 
-     the corresponding lambda of the argument provides the 
-     constructor variable. Moreover, if the source type of the
-     prod contains a reference to the inductive type, it is a
-     recursive argument and the NEXT lambda of the argument 
-     provides an induction hypothesis.
-     Unfortunately the three functions cannot be merged into a
-     single one without a conversion from document tree fragments
-     to node-sets. 
--->
-<xsl:template name="get_constructor_args">
- <xsl:param name="no_params" select="0"/>
- <xsl:param name="constructor_arity" select="/.."/>
- <xsl:param name="actual_arg" select="/.."/>
- <xsl:param name="inductive_def_name" select="''"/>
- <xsl:choose>
- <xsl:when test="$no_params = 0">
- <xsl:if test="name($constructor_arity)='PROD'">
-  <m:bvar>
-   <m:ci><xsl:value-of select="$actual_arg/target/@binder"/></m:ci>
-   <m:type>
-    <xsl:apply-templates mode="pure" select="$actual_arg/source/*[1]"/>
-   </m:type> 
-  </m:bvar>
-  <xsl:choose>
-   <xsl:when test="$constructor_arity/source//REL[@binder=$inductive_def_name]">
-    <xsl:call-template name="get_constructor_args">
-    <xsl:with-param name="constructor_arity" 
-        select="$constructor_arity/target/*[1]"/>
-    <xsl:with-param name="actual_arg" 
-        select="$actual_arg/target/LAMBDA/target/*[1]"/>
-    <xsl:with-param name="inductive_def_name" 
-               select="$inductive_def_name"/>
-    </xsl:call-template>
-   </xsl:when>
-   <xsl:otherwise>
-    <xsl:call-template name="get_constructor_args">
-    <xsl:with-param name="constructor_arity" 
-        select="$constructor_arity/target/*[1]"/>
-    <xsl:with-param name="actual_arg" 
-        select="$actual_arg/target/*[1]"/>
-    <xsl:with-param name="inductive_def_name" 
-               select="$inductive_def_name"/>
-    </xsl:call-template>
-   </xsl:otherwise>
-  </xsl:choose>
- </xsl:if>
- </xsl:when>
- <xsl:otherwise>
-  <xsl:call-template name="get_constructor_args">
-    <xsl:with-param name="no_params" select="$no_params - 1"/>
-    <xsl:with-param name="constructor_arity" 
-        select="$constructor_arity/target/*[1]"/>
-    <xsl:with-param name="actual_arg" 
-        select="$actual_arg"/>
-    <xsl:with-param name="inductive_def_name" 
-               select="$inductive_def_name"/>
-    </xsl:call-template>
- </xsl:otherwise>
- </xsl:choose>
-</xsl:template>
-
-<xsl:template name="get_induction_hypothesis">
- <xsl:param name="no_params" select="0"/>
- <xsl:param name="constructor_arity" select="/.."/>
- <xsl:param name="actual_arg" select="/.."/>
- <xsl:param name="inductive_def_name" select="''"/>
- <xsl:choose>
- <xsl:when test="$no_params = 0">
- <xsl:if test="name($constructor_arity)='PROD'">
-  <xsl:choose>
-   <xsl:when test="$constructor_arity/source//REL[@binder=$inductive_def_name]">
-    <m:bvar>
-     <m:ci>
-      <xsl:value-of select="$actual_arg/target/LAMBDA/target/@binder"/>
-     </m:ci>
-     <m:type>
-      <xsl:apply-templates mode="pure" 
-           select="$actual_arg/target/LAMBDA/source"/>
-     </m:type>
-    </m:bvar>
-    <xsl:call-template name="get_induction_hypothesis">
-    <xsl:with-param name="constructor_arity" 
-        select="$constructor_arity/target/*[1]"/>
-    <xsl:with-param name="actual_arg" 
-        select="$actual_arg/target/LAMBDA/target/*[1]"/>
-    <xsl:with-param name="inductive_def_name" 
-               select="$inductive_def_name"/>
-    </xsl:call-template>
-   </xsl:when>
-   <xsl:otherwise>
-    <xsl:call-template name="get_induction_hypothesis">
-    <xsl:with-param name="constructor_arity" 
-        select="$constructor_arity/target/*[1]"/>
-    <xsl:with-param name="actual_arg" 
-        select="$actual_arg/target/*[1]"/>
-    <xsl:with-param name="inductive_def_name" 
-               select="$inductive_def_name"/>
-    </xsl:call-template>
-   </xsl:otherwise>
-  </xsl:choose>
- </xsl:if>
- </xsl:when>
- <xsl:otherwise>
-  <xsl:call-template name="get_induction_hypothesis">
-    <xsl:with-param name="no_params" select="$no_params - 1"/>
-    <xsl:with-param name="constructor_arity" 
-        select="$constructor_arity/target/*[1]"/>
-    <xsl:with-param name="actual_arg" 
-        select="$actual_arg"/>
-    <xsl:with-param name="inductive_def_name" 
-               select="$inductive_def_name"/>
-    </xsl:call-template>
- </xsl:otherwise>
- </xsl:choose>
-</xsl:template>
-
-<xsl:template name="get_body">
- <xsl:param name="no_params" select="0"/>
- <xsl:param name="constructor_arity" select="/.."/>
- <xsl:param name="actual_arg" select="/.."/>
- <xsl:param name="inductive_def_name" select="''"/>
- <xsl:choose>
- <xsl:when test="$no_params = 0">
- <xsl:choose>
- <xsl:when test="name($constructor_arity)='PROD'">
-  <xsl:choose>
-   <xsl:when test="$constructor_arity/source//REL[@binder=$inductive_def_name]">
-    <xsl:call-template name="get_body">
-    <xsl:with-param name="constructor_arity" 
-        select="$constructor_arity/target/*[1]"/>
-    <xsl:with-param name="actual_arg" 
-        select="$actual_arg/target/LAMBDA/target/*[1]"/>
-    <xsl:with-param name="inductive_def_name" 
-               select="$inductive_def_name"/>
-    </xsl:call-template>
-   </xsl:when>
-   <xsl:otherwise>
-    <xsl:call-template name="get_body">
-    <xsl:with-param name="constructor_arity" 
-        select="$constructor_arity/target/*[1]"/>
-    <xsl:with-param name="actual_arg" 
-        select="$actual_arg/target/*[1]"/>
-    <xsl:with-param name="inductive_def_name" 
-               select="$inductive_def_name"/>
-    </xsl:call-template>
-   </xsl:otherwise>
-  </xsl:choose>
- </xsl:when>
- <xsl:otherwise>
-  <xsl:apply-templates mode="noannot" select="$actual_arg"/>
- </xsl:otherwise> 
- </xsl:choose>
- </xsl:when>
- <xsl:otherwise>
-  <xsl:call-template name="get_body">
-    <xsl:with-param name="no_params" select="$no_params - 1"/>
-    <xsl:with-param name="constructor_arity" 
-        select="$constructor_arity/target/*[1]"/>
-    <xsl:with-param name="actual_arg" 
-        select="$actual_arg"/>
-    <xsl:with-param name="inductive_def_name" 
-               select="$inductive_def_name"/>
-    </xsl:call-template>
- </xsl:otherwise>
- </xsl:choose>
-</xsl:template>
-
-</xsl:stylesheet>