142 lines
		
	
	
		
			4.6 KiB
		
	
	
	
		
			C++
		
	
	
			
		
		
	
	
			142 lines
		
	
	
		
			4.6 KiB
		
	
	
	
		
			C++
		
	
	
/* ----------------------------------------------------------------------------
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 * GTSAM Copyright 2010, Georgia Tech Research Corporation, 
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 * Atlanta, Georgia 30332-0415
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 * All Rights Reserved
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 * Authors: Frank Dellaert, et al. (see THANKS for the full author list)
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 * See LICENSE for the license information
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 * -------------------------------------------------------------------------- */
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/**
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 * @file MethodBase.ccp
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 * @author Frank Dellaert
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 * @author Andrew Melim
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 * @author Richard Roberts
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 **/
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#include "Method.h"
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#include "utilities.h"
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#include <boost/foreach.hpp>
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#include <boost/lexical_cast.hpp>
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#include <boost/algorithm/string.hpp>
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#include <iostream>
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#include <fstream>
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using namespace std;
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using namespace wrap;
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/* ************************************************************************* */
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void MethodBase::proxy_wrapper_fragments(FileWriter& proxyFile,
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    FileWriter& wrapperFile, Str cppClassName, Str matlabQualName,
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    Str matlabUniqueName, Str wrapperName,
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    const TypeAttributesTable& typeAttributes,
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    vector<string>& functionNames) const {
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  // emit header, e.g., function varargout = templatedMethod(this, varargin)
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  proxy_header(proxyFile);
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  // Emit comments for documentation
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  string up_name = boost::to_upper_copy(matlabName());
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  proxyFile.oss << "      % " << up_name << " usage: ";
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  usage_fragment(proxyFile, matlabName());
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  // Emit URL to Doxygen page
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  proxyFile.oss << "      % "
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      << "Doxygen can be found at http://research.cc.gatech.edu/borg/sites/edu.borg/html/index.html"
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      << endl;
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  // Handle special case of single overload with all numeric arguments
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  if (nrOverloads() == 1 && argumentList(0).allScalar()) {
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    // Output proxy matlab code
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    // TODO: document why is it OK to not check arguments in this case
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    proxyFile.oss << "      ";
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    const int id = (int) functionNames.size();
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    emit_call(proxyFile, returnValue(0), wrapperName, id);
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    // Output C++ wrapper code
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    const string wrapFunctionName = wrapper_fragment(wrapperFile, cppClassName,
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        matlabUniqueName, 0, id, typeAttributes);
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    // Add to function list
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    functionNames.push_back(wrapFunctionName);
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  } else {
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    // Check arguments for all overloads
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    for (size_t i = 0; i < nrOverloads(); ++i) {
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      // Output proxy matlab code
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      proxyFile.oss << "      " << (i == 0 ? "" : "else");
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      const int id = (int) functionNames.size();
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      emit_conditional_call(proxyFile, returnValue(i), argumentList(i),
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          wrapperName, id);
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      // Output C++ wrapper code
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      const string wrapFunctionName = wrapper_fragment(wrapperFile,
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          cppClassName, matlabUniqueName, i, id, typeAttributes);
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      // Add to function list
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      functionNames.push_back(wrapFunctionName);
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    }
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    proxyFile.oss << "      else\n";
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    proxyFile.oss
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        << "        error('Arguments do not match any overload of function "
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        << matlabQualName << "." << name_ << "');" << endl;
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    proxyFile.oss << "      end\n";
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  }
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  proxyFile.oss << "    end\n";
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}
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/* ************************************************************************* */
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string MethodBase::wrapper_fragment(FileWriter& wrapperFile, Str cppClassName,
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    Str matlabUniqueName, int overload, int id,
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    const TypeAttributesTable& typeAttributes) const {
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  // generate code
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  const string wrapFunctionName = matlabUniqueName + "_" + name_ + "_"
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      + boost::lexical_cast<string>(id);
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  const ArgumentList& args = argumentList(overload);
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  const ReturnValue& returnVal = returnValue(overload);
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  // call
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  wrapperFile.oss << "void " << wrapFunctionName
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      << "(int nargout, mxArray *out[], int nargin, const mxArray *in[])\n";
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  // start
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  wrapperFile.oss << "{\n";
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  returnVal.wrapTypeUnwrap(wrapperFile);
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  wrapperFile.oss << "  typedef boost::shared_ptr<" << cppClassName
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      << "> Shared;" << endl;
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  // get call
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  // for static methods: cppClassName::staticMethod<TemplateVal>
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  // for instance methods: obj->instanceMethod<TemplateVal>
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  string expanded = wrapper_call(wrapperFile, cppClassName, matlabUniqueName,
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      args);
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  expanded += ("(" + args.names() + ")");
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  if (returnVal.type1.name() != "void")
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    returnVal.wrap_result(expanded, wrapperFile, typeAttributes);
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  else
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    wrapperFile.oss << "  " + expanded + ";\n";
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  // finish
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  wrapperFile.oss << "}\n";
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  return wrapFunctionName;
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}
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/* ************************************************************************* */
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void MethodBase::python_wrapper(FileWriter& wrapperFile, Str className) const {
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  wrapperFile.oss << "  .def(\"" << name_ << "\", &" << className << "::"
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      << name_ << ");\n";
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}
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/* ************************************************************************* */
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