Generate ND indexing functions on demand in JIT. * src/jit-typeinfo.cc (jit_operation::~jit_operation, jit_operation::do_generate, jit_operation::generate, jit_operation::signature_cmp::operator()): New function. (jit_operation::overload): Call do_generate when lookup fails. (jit_index_operation, jit_paren_subsref, jit_paren_subsasgn): New class. (jit_typeinfo::jit_typeinfo): Update to use jit_paren_subsref and jit_paren_subsasgn. (jit_typeinfo::gen_subsref, jit_typeinfo::gen_subsasgn): Removed functions. * src/jit-typeinfo.h (jit_operation::~jit_operation, jit_operation::generate, jit_operation::do_generate): New declaration. (jit_operation::add_overload, jit_operation::overload, jit_operation::result, jit_operation::to_idx): Use signature_vec typedef. (jit_operation::singature_cmp): New class. (jit_index_operation, jit_paren_subsref, jit_paren_subsasgn): New class. (jit_typeinfo::get_scalar_ptr): Nwe function. (jit_typeinfo::gen_subsref, jit_typeinfo::gen_subsasgn): Removed declaration. * src/pt-jit.cc: New test.

#include "mex.h"

void
mexFunction (int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
{
  mxArray *v = mxCreateDoubleMatrix (1, 1, mxREAL);

  double *data = mxGetPr (v);

  *data = 1.23456789;

  plhs[0] = v;
}