CWrapper_Source.xslt

<?xml version="1.0" encoding="ISO-8859-1"?>
<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

<xsl:output method="text" omit-xml-declaration="yes"/>

<xsl:variable name="std_namespace_id" select="/GCC_XML/Namespace[@name='std']/@id"/>
<xsl:variable name="openmm_namespace_id" select="/GCC_XML/Namespace[@name='OpenMM']/@id"/>
<xsl:variable name="void_type_id" select="/GCC_XML/FundamentalType[@name='void']/@id"/>
<xsl:variable name="bool_type_id" select="/GCC_XML/FundamentalType[@name='bool']/@id"/>
<xsl:variable name="double_type_id" select="/GCC_XML/FundamentalType[@name='double']/@id"/>
<xsl:variable name="string_type_id" select="/GCC_XML/*[@name='string' and @context=$std_namespace_id]/@id"/>
<xsl:variable name="const_string_type_id" select="/GCC_XML/CvQualifiedType[@type=$string_type_id]/@id"/>
<xsl:variable name="const_ref_string_type_id" select="/GCC_XML/ReferenceType[@type=$const_string_type_id]/@id"/>
<xsl:variable name="vec3_type_id" select="/GCC_XML/Class[@name='Vec3' and @context=$openmm_namespace_id]/@id"/>
<xsl:variable name="vector_string_type_id" select="/GCC_XML/Class[starts-with(@name, 'vector&lt;std::basic_string')]/@id"/>
<xsl:variable name="vector_vec3_type_id" select="/GCC_XML/Class[starts-with(@name, 'vector&lt;OpenMM::Vec3')]/@id"/>
<xsl:variable name="vector_bond_type_id" select="/GCC_XML/Class[starts-with(@name, 'vector&lt;std::pair&lt;int, int')]/@id"/>
<xsl:variable name="map_parameter_type_id" select="/GCC_XML/Class[starts-with(@name, 'map&lt;std::basic_string') and contains(@name, 'double')]/@id"/>
<xsl:variable name="map_property_type_id" select="/GCC_XML/Class[starts-with(@name, 'map&lt;std::basic_string') and not(contains(@name, 'double'))]/@id"/>
<xsl:variable name="vector_double_type_id" select="/GCC_XML/Class[starts-with(@name, 'vector&lt;double')]/@id"/>
<xsl:variable name="newline">
<xsl:text>
</xsl:text>
</xsl:variable>


<!-- Do not generate functions for the following classes -->
<xsl:variable name="skip_classes" select="('Vec3', 'Kernel', 'Stream', 'KernelImpl', 'StreamImpl', 'KernelFactory', 'StreamFactory')"/>
<!-- Do not generate the following functions -->
<xsl:variable name="skip_methods" select="('OpenMM_Context_getState', 'OpenMM_Platform_loadPluginsFromDirectory')"/>
<!-- Suppress any function which references any of the following classes -->
<xsl:variable name="hide_classes" select="('Kernel', 'Stream', 'KernelImpl', 'StreamImpl', 'KernelFactory', 'StreamFactory', 'ContextImpl')"/>

<!-- Main loop over all classes in the OpenMM namespace -->
<xsl:template match="/GCC_XML">
#include "OpenMM.h"
#include "OpenMMCWrapper.h"
#include &lt;cstring&gt;
#include &lt;vector&gt;

using namespace OpenMM;
using namespace std;

extern "C" {

/* OpenMM_Vec3 */
OPENMM_EXPORT OpenMM_Vec3 OpenMM_Vec3_scale(const OpenMM_Vec3 vec, double scale) {
    OpenMM_Vec3 result = {vec.x*scale, vec.y*scale, vec.z*scale};
    return result;
}

/* OpenMM_Vec3Array */
OPENMM_EXPORT OpenMM_Vec3Array* OpenMM_Vec3Array_create(int size) {
    return reinterpret_cast&lt;OpenMM_Vec3Array*&gt;(new vector&lt;Vec3&gt;(size));
}
OPENMM_EXPORT void OpenMM_Vec3Array_destroy(OpenMM_Vec3Array* array) {
    delete reinterpret_cast&lt;vector&lt;Vec3&gt;*&gt;(array);
}
OPENMM_EXPORT int OpenMM_Vec3Array_getSize(const OpenMM_Vec3Array* array) {
    return reinterpret_cast&lt;const vector&lt;Vec3&gt;*&gt;(array)->size();
}
OPENMM_EXPORT void OpenMM_Vec3Array_resize(OpenMM_Vec3Array* array, int size) {
    reinterpret_cast&lt;vector&lt;Vec3&gt;*&gt;(array)->resize(size);
}
OPENMM_EXPORT void OpenMM_Vec3Array_append(OpenMM_Vec3Array* array, const OpenMM_Vec3 vec) {
    reinterpret_cast&lt;vector&lt;Vec3&gt;*&gt;(array)->push_back(Vec3(vec.x, vec.y, vec.z));
}
OPENMM_EXPORT void OpenMM_Vec3Array_set(OpenMM_Vec3Array* array, int index, const OpenMM_Vec3 vec) {
    (*reinterpret_cast&lt;vector&lt;Vec3&gt;*&gt;(array))[index] = Vec3(vec.x, vec.y, vec.z);
}
OPENMM_EXPORT const OpenMM_Vec3* OpenMM_Vec3Array_get(const OpenMM_Vec3Array* array, int index) {
    return reinterpret_cast&lt;const OpenMM_Vec3*&gt;((&amp;(*reinterpret_cast&lt;const vector&lt;Vec3&gt;*&gt;(array))[index]));
}

/* OpenMM_StringArray */
OPENMM_EXPORT OpenMM_StringArray* OpenMM_StringArray_create(int size) {
    return reinterpret_cast&lt;OpenMM_StringArray*&gt;(new vector&lt;string&gt;(size));
}
OPENMM_EXPORT void OpenMM_StringArray_destroy(OpenMM_StringArray* array) {
    delete reinterpret_cast&lt;vector&lt;string&gt;*&gt;(array);
}
OPENMM_EXPORT int OpenMM_StringArray_getSize(const OpenMM_StringArray* array) {
    return reinterpret_cast&lt;const vector&lt;string&gt;*&gt;(array)->size();
}
OPENMM_EXPORT void OpenMM_StringArray_resize(OpenMM_StringArray* array, int size) {
    reinterpret_cast&lt;vector&lt;string&gt;*&gt;(array)->resize(size);
}
OPENMM_EXPORT void OpenMM_StringArray_append(OpenMM_StringArray* array, const char* str) {
    reinterpret_cast&lt;vector&lt;string&gt;*&gt;(array)->push_back(string(str));
}
OPENMM_EXPORT void OpenMM_StringArray_set(OpenMM_StringArray* array, int index, const char* str) {
    (*reinterpret_cast&lt;vector&lt;string&gt;*&gt;(array))[index] = string(str);
}
OPENMM_EXPORT const char* OpenMM_StringArray_get(const OpenMM_StringArray* array, int index) {
    return (*reinterpret_cast&lt;const vector&lt;string&gt;*&gt;(array))[index].c_str();
}

/* OpenMM_BondArray */
OPENMM_EXPORT OpenMM_BondArray* OpenMM_BondArray_create(int size) {
    return reinterpret_cast&lt;OpenMM_BondArray*&gt;(new vector&lt;pair&lt;int, int&gt; &gt;(size));
}
OPENMM_EXPORT void OpenMM_BondArray_destroy(OpenMM_BondArray* array) {
    delete reinterpret_cast&lt;vector&lt;pair&lt;int, int&gt; &gt;*&gt;(array);
}
OPENMM_EXPORT int OpenMM_BondArray_getSize(const OpenMM_BondArray* array) {
    return reinterpret_cast&lt;const vector&lt;pair&lt;int, int&gt; &gt;*&gt;(array)->size();
}
OPENMM_EXPORT void OpenMM_BondArray_resize(OpenMM_BondArray* array, int size) {
    reinterpret_cast&lt;vector&lt;pair&lt;int, int&gt; &gt;*&gt;(array)->resize(size);
}
OPENMM_EXPORT void OpenMM_BondArray_append(OpenMM_BondArray* array, int particle1, int particle2) {
    reinterpret_cast&lt;vector&lt;pair&lt;int, int&gt; &gt;*&gt;(array)->push_back(pair&lt;int, int&gt;(particle1, particle2));
}
OPENMM_EXPORT void OpenMM_BondArray_set(OpenMM_BondArray* array, int index, int particle1, int particle2) {
    (*reinterpret_cast&lt;vector&lt;pair&lt;int, int&gt; &gt;*&gt;(array))[index] = pair&lt;int, int&gt;(particle1, particle2);
}
OPENMM_EXPORT void OpenMM_BondArray_get(const OpenMM_BondArray* array, int index, int* particle1, int* particle2) {
    pair&lt;int, int&gt; particles = (*reinterpret_cast&lt;const vector&lt;pair&lt;int, int&gt; &gt;*&gt;(array))[index];
    *particle1 = particles.first;
    *particle2 = particles.second;
}

/* OpenMM_ParameterArray */
OPENMM_EXPORT int OpenMM_ParameterArray_getSize(const OpenMM_ParameterArray* array) {
    return reinterpret_cast&lt;const map&lt;string, double&gt;*&gt;(array)->size();
}
OPENMM_EXPORT double OpenMM_ParameterArray_get(const OpenMM_ParameterArray* array, const char* name) {
    const map&lt;string, double&gt;* params = reinterpret_cast&lt;const map&lt;string, double&gt;*&gt;(array);
    const map&lt;string, double&gt;::const_iterator iter = params->find(string(name));
    if (iter == params->end())
        throw OpenMMException("OpenMM_ParameterArray_get: No such parameter");
    return iter->second;
}

/* OpenMM_PropertyArray */
OPENMM_EXPORT int OpenMM_PropertyArray_getSize(const OpenMM_PropertyArray* array) {
    return reinterpret_cast&lt;const map&lt;string, double&gt;*&gt;(array)->size();
}
OPENMM_EXPORT const char* OpenMM_PropertyArray_get(const OpenMM_PropertyArray* array, const char* name) {
    const map&lt;string, string&gt;* params = reinterpret_cast&lt;const map&lt;string, string&gt;*&gt;(array);
    const map&lt;string, string&gt;::const_iterator iter = params->find(string(name));
    if (iter == params->end())
        throw OpenMMException("OpenMM_PropertyArray_get: No such property");
    return iter->second.c_str();
}
<xsl:call-template name="primitive_array">
 <xsl:with-param name="element_type" select="'double'"/>
 <xsl:with-param name="name" select="'OpenMM_DoubleArray'"/>
</xsl:call-template>

/* These methods need to be handled specially, since their C++ APIs cannot be directly translated to C.
   Unlike the C++ versions, the return value is allocated on the heap, and you must delete it yourself. */
OPENMM_EXPORT OpenMM_State* OpenMM_Context_getState(const OpenMM_Context* target, int types) {
    State result = reinterpret_cast&lt;const Context*&gt;(target)->getState(types);
    return reinterpret_cast&lt;OpenMM_State*&gt;(new State(result));
};
OPENMM_EXPORT OpenMM_StringArray* OpenMM_Platform_loadPluginsFromDirectory(const char* directory) {
    vector&lt;string&gt; result = Platform::loadPluginsFromDirectory(string(directory));
    return reinterpret_cast&lt;OpenMM_StringArray*&gt;(new vector&lt;string&gt;(result));
};

 <!-- Class members -->
 <xsl:for-each select="Class[@context=$openmm_namespace_id and empty(index-of($skip_classes, @name))]">
  <xsl:call-template name="class"/>
 </xsl:for-each>
 
}
</xsl:template>

<!-- Print out the definitions for a (Primitive)Array type -->
<xsl:template name="primitive_array">
 <xsl:param name="element_type"/>
 <xsl:param name="name"/>
/* <xsl:value-of select="$name"/> */
OPENMM_EXPORT <xsl:value-of select="$name"/>* <xsl:value-of select="$name"/>_create(int size) {
    return reinterpret_cast&lt;<xsl:value-of select="$name"/>*&gt;(new vector&lt;<xsl:value-of select="$element_type"/>&gt;(size));
}
OPENMM_EXPORT void <xsl:value-of select="$name"/>_destroy(<xsl:value-of select="$name"/>* array) {
    delete reinterpret_cast&lt;vector&lt;<xsl:value-of select="$element_type"/>&gt;*&gt;(array);
}
OPENMM_EXPORT int <xsl:value-of select="$name"/>_getSize(const <xsl:value-of select="$name"/>* array) {
    return reinterpret_cast&lt;const vector&lt;<xsl:value-of select="$element_type"/>&gt;*&gt;(array)->size();
}
OPENMM_EXPORT void <xsl:value-of select="$name"/>_resize(<xsl:value-of select="$name"/>* array, int size) {
    reinterpret_cast&lt;vector&lt;<xsl:value-of select="$element_type"/>&gt;*&gt;(array)->resize(size);
}
OPENMM_EXPORT void <xsl:value-of select="$name"/>_append(<xsl:value-of select="$name"/>* array, <xsl:value-of select="$element_type"/> value) {
    reinterpret_cast&lt;vector&lt;<xsl:value-of select="$element_type"/>&gt;*&gt;(array)->push_back(value);
}
OPENMM_EXPORT void <xsl:value-of select="$name"/>_set(<xsl:value-of select="$name"/>* array, int index, <xsl:value-of select="$element_type"/> value) {
    (*reinterpret_cast&lt;vector&lt;<xsl:value-of select="$element_type"/>&gt;*&gt;(array))[index] = value;
}
OPENMM_EXPORT double <xsl:value-of select="$name"/>_get(const <xsl:value-of select="$name"/>* array, int index) {
    return (*reinterpret_cast&lt;const vector&lt;<xsl:value-of select="$element_type"/>&gt;*&gt;(array))[index];
}
</xsl:template>

<!-- Print out information for a class -->
<xsl:template name="class">
 <xsl:variable name="class_name" select="@name"/>
 <xsl:variable name="class_id" select="@id"/>

/* OpenMM::<xsl:value-of select="concat(@name, '*/')"/>
 <!-- Constructors and destructor -->
 <xsl:if test="not(@abstract=1)">
  <xsl:variable name="constructors" select="/GCC_XML/Constructor[@context=$class_id and @access='public' and not(@artificial='1')]"/>
  <xsl:for-each select="$constructors">
   <xsl:call-template name="constructor">
    <xsl:with-param name="suffix" select="if (position() > 1) then concat('_', position()) else ''"/>
   </xsl:call-template>
  </xsl:for-each>
 </xsl:if>
OPENMM_EXPORT void OpenMM_<xsl:value-of select="concat(@name, '_destroy(OpenMM_', @name, '* target) {')"/>
    delete reinterpret_cast&lt;<xsl:value-of select="@name"/>*&gt;(target);
}
 <!-- Methods -->
 <xsl:variable name="methods" select="/GCC_XML/Method[@context=$class_id and @access='public']"/>
 <xsl:for-each select="$methods">
  <xsl:variable name="node" select="."/>
  <!-- The next line is to deal with overloaded methods that have a const and a non-const version. -->
  <xsl:if test="not(@const=1) or empty($methods[@name=$node/@name and not(@const=1)])">
   <xsl:variable name="hide">
    <xsl:call-template name="should_hide"/>
   </xsl:variable>
   <xsl:if test="string-length($hide)=0">
    <xsl:call-template name="method">
     <xsl:with-param name="class_name" select="$class_name"/>
     <xsl:with-param name="class_id" select="$class_id"/>
    </xsl:call-template>
   </xsl:if>
  </xsl:if>
 </xsl:for-each>
</xsl:template>

<!-- Print out the definition of a constructor -->
<xsl:template name="constructor">
 <xsl:param name="suffix"/>
OPENMM_EXPORT OpenMM_<xsl:value-of select="concat(@name, '* OpenMM_', @name, '_create', $suffix, '(')"/>
  <xsl:for-each select="Argument">
   <xsl:if test="position() > 1">, </xsl:if>
   <xsl:call-template name="wrap_type"><xsl:with-param name="type_id" select="@type"/></xsl:call-template>
   <xsl:value-of select="concat(' ', @name)"/>
  </xsl:for-each>
  <xsl:value-of select="') {'"/>
    return reinterpret_cast&lt;OpenMM_<xsl:value-of select="@name"/>*&gt;(new <xsl:value-of select="concat(@name, '(')"/>
  <xsl:for-each select="Argument">
   <xsl:if test="position() > 1">, </xsl:if>
   <xsl:call-template name="unwrap_value">
    <xsl:with-param name="value" select="@name"/>
    <xsl:with-param name="type_id" select="@type"/>
   </xsl:call-template>
  </xsl:for-each>
  <xsl:value-of select="'));'"/>
}
</xsl:template>

<!-- Print out the definition of a method -->
<xsl:template name="method">
 <xsl:param name="class_name"/>
 <xsl:param name="class_id"/>
 <!-- First the method signature -->
 <xsl:value-of select="$newline"/>
OPENMM_EXPORT <xsl:call-template name="wrap_type"><xsl:with-param name="type_id" select="@returns"/></xsl:call-template><xsl:value-of select="concat(' OpenMM_', $class_name, '_', @name, '(')"/>
 <xsl:if test="not(@static='1')">
  <xsl:if test="@const='1'">
   <xsl:value-of select="'const '"/>
  </xsl:if>
  <xsl:value-of select="concat('OpenMM_', $class_name, '* target')"/>
 </xsl:if>
 <!-- Generate the list of arguments -->
 <xsl:variable name="method" select="."/>
 <xsl:for-each select="Argument">
  <xsl:if test="position() > 1 or not($method/@static='1')">, </xsl:if>
  <xsl:call-template name="wrap_type"><xsl:with-param name="type_id" select="@type"/></xsl:call-template>
  <xsl:value-of select="concat(' ', @name)"/>
 </xsl:for-each>
 <xsl:value-of select="concat(') {', $newline, '    ')"/>
 <!-- Now the method body -->
 <xsl:if test="not(@returns=$void_type_id)">
  <xsl:call-template name="unwrap_type"><xsl:with-param name="type_id" select="@returns"/></xsl:call-template>
  <xsl:value-of select="' result = '"/>
 </xsl:if>
 <xsl:variable name="return_type" select="/GCC_XML/*[@id=$method/@returns]"/>
 <xsl:if test="local-name($return_type)='ReferenceType'">
  <xsl:value-of select="'&amp;'"/>
 </xsl:if>
 <xsl:choose>
  <xsl:when test="@static='1'">
   <!-- Invoke the method on the class -->
   <xsl:value-of select="concat($class_name, '::')"/>
  </xsl:when>
  <xsl:otherwise>
   <!-- Invoke the method on the target object -->
   <xsl:value-of select="'reinterpret_cast&lt;'"/>
   <xsl:if test="@const='1'">
    <xsl:value-of select="'const '"/>
   </xsl:if>
   <xsl:value-of select="concat($class_name, '*&gt;(target)->')"/>
  </xsl:otherwise>
 </xsl:choose>
 <xsl:value-of select="concat(@name, '(')"/>
 <xsl:for-each select="Argument">
  <xsl:if test="position() > 1">, </xsl:if>
  <xsl:call-template name="unwrap_value">
   <xsl:with-param name="value" select="@name"/>
   <xsl:with-param name="type_id" select="@type"/>
  </xsl:call-template>
 </xsl:for-each>
 <xsl:value-of select="');'"/>
 <xsl:if test="not(@returns=$void_type_id)">
  <xsl:value-of select="concat($newline, '    return ')"/>
  <xsl:call-template name="wrap_value"><xsl:with-param name="value" select="'result'"/><xsl:with-param name="type_id" select="@returns"/></xsl:call-template>
  <xsl:value-of select="';'"/>
 </xsl:if>
};
</xsl:template>

<!-- Print out the description of a type in the wrapper API -->
<xsl:template name="wrap_type">
 <xsl:param name="type_id"/>
 <xsl:variable name="node" select="/GCC_XML/*[@id=$type_id]"/>
 <xsl:choose>
  <xsl:when test="$type_id=$bool_type_id">
   <xsl:value-of select="'OpenMM_Boolean'"/>
  </xsl:when>
  <xsl:when test="$type_id=$string_type_id">
   <xsl:value-of select="'char*'"/>
  </xsl:when>
  <xsl:when test="$type_id=$const_ref_string_type_id">
   <xsl:value-of select="'const char*'"/>
  </xsl:when>
  <xsl:when test="$type_id=$vector_string_type_id">
   <xsl:value-of select="'OpenMM_StringArray'"/>
  </xsl:when>
  <xsl:when test="$type_id=$vector_vec3_type_id">
   <xsl:value-of select="'OpenMM_Vec3Array'"/>
  </xsl:when>
  <xsl:when test="$type_id=$vector_bond_type_id">
   <xsl:value-of select="'OpenMM_BondArray'"/>
  </xsl:when>
  <xsl:when test="$type_id=$map_parameter_type_id">
   <xsl:value-of select="'OpenMM_ParameterArray'"/>
  </xsl:when>
  <xsl:when test="$type_id=$map_property_type_id">
   <xsl:value-of select="'OpenMM_PropertyArray'"/>
  </xsl:when>
  <xsl:when test="$type_id=$vector_double_type_id">
   <xsl:value-of select="'OpenMM_DoubleArray'"/>
  </xsl:when>
  <xsl:when test="local-name($node)='ReferenceType' or local-name($node)='PointerType'">
   <xsl:call-template name="wrap_type">
    <xsl:with-param name="type_id" select="$node/@type"/>
   </xsl:call-template>
   <xsl:value-of select="'*'"/>
  </xsl:when>
  <xsl:when test="local-name($node)='CvQualifiedType'">
   <xsl:if test="$node/@const=1">
    <xsl:value-of select="'const '"/>
   </xsl:if>
   <xsl:call-template name="wrap_type">
    <xsl:with-param name="type_id" select="$node/@type"/>
   </xsl:call-template>
  </xsl:when>
  <xsl:when test="local-name($node)='Enumeration'">
   <xsl:variable name="class_name" select="/GCC_XML/Class[@id=$node/@context]/@name"/>
   <xsl:value-of select="concat('OpenMM_', $class_name, '_', $node/@name)"/>
  </xsl:when>
  <xsl:when test="$node/@context=$openmm_namespace_id">
   <xsl:value-of select="concat('OpenMM_', $node/@name)"/>
  </xsl:when>
  <xsl:otherwise>
   <xsl:value-of select="$node/@name"/>
  </xsl:otherwise>
 </xsl:choose>
</xsl:template>

<!-- Print out the description of a type in the native API -->
<xsl:template name="unwrap_type">
 <xsl:param name="type_id"/>
 <xsl:variable name="node" select="/GCC_XML/*[@id=$type_id]"/>
 <xsl:choose>
  <xsl:when test="$type_id=$vector_string_type_id">
   <xsl:value-of select="'vector&lt;string&gt;'"/>
  </xsl:when>
  <xsl:when test="$type_id=$vector_vec3_type_id">
   <xsl:value-of select="'vector&lt;Vec3&gt;'"/>
  </xsl:when>
  <xsl:when test="$type_id=$vector_bond_type_id">
   <xsl:value-of select="'vector&lt;pair&lt;int, int&gt; &gt;'"/>
  </xsl:when>
  <xsl:when test="$type_id=$map_parameter_type_id">
   <xsl:value-of select="'map&lt;string, double&gt;'"/>
  </xsl:when>
  <xsl:when test="$type_id=$map_property_type_id">
   <xsl:value-of select="'map&lt;string, string&gt;'"/>
  </xsl:when>
  <xsl:when test="$type_id=$vector_double_type_id">
   <xsl:value-of select="'vector&lt;double&gt;'"/>
  </xsl:when>
  <xsl:when test="local-name($node)='ReferenceType' or local-name($node)='PointerType'">
   <xsl:call-template name="unwrap_type">
    <xsl:with-param name="type_id" select="$node/@type"/>
   </xsl:call-template>
   <xsl:value-of select="'*'"/>
  </xsl:when>
  <xsl:when test="local-name($node)='CvQualifiedType'">
   <xsl:if test="$node/@const=1">
    <xsl:value-of select="'const '"/>
   </xsl:if>
   <xsl:call-template name="unwrap_type">
    <xsl:with-param name="type_id" select="$node/@type"/>
   </xsl:call-template>
  </xsl:when>
  <xsl:when test="local-name($node)='Enumeration'">
   <xsl:variable name="class_name" select="/GCC_XML/Class[@id=$node/@context]/@name"/>
   <xsl:value-of select="concat($class_name, '::', $node/@name)"/>
  </xsl:when>
  <xsl:otherwise>
   <xsl:value-of select="$node/@name"/>
  </xsl:otherwise>
 </xsl:choose>
</xsl:template>

<!-- Print out a value, if necessary casting from a native type to a wrapped type -->
<xsl:template name="wrap_value">
 <xsl:param name="value"/>
 <xsl:param name="type_id"/>
 <xsl:variable name="node" select="/GCC_XML/*[@id=$type_id]"/>
 <xsl:choose>
  <xsl:when test="$type_id=$bool_type_id">
   <xsl:value-of select="concat('(', $value, ' ? OpenMM_True : OpenMM_False)')"/>
  </xsl:when>
  <xsl:when test="$type_id=$string_type_id">
   <xsl:value-of select="concat($value, '.c_str()')"/>
  </xsl:when>
  <xsl:when test="$type_id=$const_ref_string_type_id">
   <xsl:value-of select="concat($value, '->c_str()')"/>
  </xsl:when>
  <xsl:when test="local-name($node)='FundamentalType'">
   <xsl:value-of select="$value"/>
  </xsl:when>
  <xsl:otherwise>
   <xsl:choose>
    <xsl:when test="local-name($node)='Enumeration'">
     <xsl:value-of select="'static_cast&lt;'"/>
    </xsl:when>
    <xsl:otherwise>
     <xsl:value-of select="'reinterpret_cast&lt;'"/>
    </xsl:otherwise>
   </xsl:choose>
   <xsl:call-template name="wrap_type">
    <xsl:with-param name="type_id" select="$type_id"/>
   </xsl:call-template>
   <xsl:value-of select="concat('&gt;(', $value, ')')"/>
  </xsl:otherwise>
 </xsl:choose>
</xsl:template>

<!-- Print out a value, if necessary casting from a wrapped type to a native type -->
<xsl:template name="unwrap_value">
 <xsl:param name="value"/>
 <xsl:param name="type_id"/>
 <xsl:variable name="node" select="/GCC_XML/*[@id=$type_id]"/>
 <xsl:choose>
  <xsl:when test="$type_id=$bool_type_id">
   <xsl:value-of select="concat('(', $value, ' != OpenMM_False)')"/>
  </xsl:when>
  <xsl:when test="$type_id=$string_type_id">
   <xsl:value-of select="concat('string(', $value, ')')"/>
  </xsl:when>
  <xsl:when test="$type_id=$const_ref_string_type_id">
   <xsl:value-of select="concat('string(', $value, ')')"/>
  </xsl:when>
  <xsl:when test="local-name($node)='FundamentalType'">
   <xsl:value-of select="$value"/>
  </xsl:when>
  <xsl:when test="$type_id=$vec3_type_id">
   <xsl:value-of select="concat('Vec3(', $value, '.x, ', $value, '.y, ', $value, '.z)')"/>
  </xsl:when>
  <xsl:otherwise>
   <xsl:if test="local-name($node)='ReferenceType'"><xsl:value-of select="'*'"/></xsl:if>
   <xsl:choose>
    <xsl:when test="local-name($node)='Enumeration'">
     <xsl:value-of select="'static_cast&lt;'"/>
    </xsl:when>
    <xsl:otherwise>
     <xsl:value-of select="'reinterpret_cast&lt;'"/>
    </xsl:otherwise>
   </xsl:choose>
   <xsl:call-template name="unwrap_type">
    <xsl:with-param name="type_id" select="$type_id"/>
   </xsl:call-template>
   <xsl:value-of select="concat(' &gt;(', $value, ')')"/>
  </xsl:otherwise>
 </xsl:choose>
</xsl:template>

<!-- Determine whether a method should be hidden -->
<xsl:template name="should_hide">
 <xsl:variable name="class_id" select="@context"/>
 <xsl:variable name="method_name" select="concat('OpenMM_', /GCC_XML/Class[@id=$class_id]/@name, '_', @name)"/>
 <xsl:if test="not(empty(index-of($skip_methods, $method_name)))">1</xsl:if>
 <xsl:call-template name="hide_type">
  <xsl:with-param name="type_id" select="@returns"/>
 </xsl:call-template>
 <xsl:for-each select="Argument">
  <xsl:call-template name="hide_type">
   <xsl:with-param name="type_id" select="@type"/>
  </xsl:call-template>
 </xsl:for-each>
</xsl:template>

<!-- This is called by should_hide.  It generates output if the specified type should be hidden. -->
<xsl:template name="hide_type">
 <xsl:param name="type_id"/>
 <xsl:variable name="node" select="/GCC_XML/*[@id=$type_id]"/>
 <xsl:choose>
  <xsl:when test="local-name($node)='ReferenceType' or local-name($node)='PointerType' or local-name($node)='CvQualifiedType'">
   <xsl:call-template name="hide_type">
    <xsl:with-param name="type_id" select="$node/@type"/>
   </xsl:call-template>
  </xsl:when>
  <xsl:when test="local-name($node)='Enumeration'">
   <xsl:call-template name="hide_type">
    <xsl:with-param name="type_id" select="$node/@context"/>
   </xsl:call-template>
  </xsl:when>
  <xsl:when test="$node/@context=$openmm_namespace_id and not(empty(index-of($hide_classes, $node/@name)))">
   <xsl:value-of select="1"/>
  </xsl:when>
 </xsl:choose>
</xsl:template>

</xsl:stylesheet>