From b7e001bfb57e8136a061d50789a23ed07e1aa299 Mon Sep 17 00:00:00 2001
From: Kyle Shores <kyle.shores44@gmail.com>
Date: Mon, 3 Jun 2024 15:46:26 -0500
Subject: [PATCH] saving progress

---
 .../test_tuvx_api.F90                         |  3 ++-
 fortran/tuvx.F90                              | 24 ++++++++++++++++++-
 2 files changed, 25 insertions(+), 2 deletions(-)

diff --git a/fortran/test/fetch_content_integration/test_tuvx_api.F90 b/fortran/test/fetch_content_integration/test_tuvx_api.F90
index 88f306c4..c654b9fd 100644
--- a/fortran/test/fetch_content_integration/test_tuvx_api.F90
+++ b/fortran/test/fetch_content_integration/test_tuvx_api.F90
@@ -70,7 +70,8 @@ subroutine test_tuvx_solve()
     ! radiators = tuvx%create_radiators( )
 
     ! update conditions for each time step
-    ! grid => grids%get( "height", "m" )
+    grid => grids%get( "height", "m", error )
+    ASSERT( error%is_success() )
     ! grid%edges_(:) = some_input_array(:)
     ! grid%mid_points_(:) = more_input_data(:)
     
diff --git a/fortran/tuvx.F90 b/fortran/tuvx.F90
index 118f2e8a..5517358b 100644
--- a/fortran/tuvx.F90
+++ b/fortran/tuvx.F90
@@ -34,6 +34,14 @@ function get_grid_map_c(tuvx, error) bind(C, name="get_grid_map")
          type(error_t_c), intent(inout) :: error
          type(c_ptr)                    :: get_grid_map_c
       end function get_grid_map_c
+
+      function get_grid_c(grid_map, grid_name, grid_units, error) bind(C, name="get_grid")
+         use musica_util, only: error_t_c
+         import c_ptr
+         type(c_ptr), value, intent(in) :: grid_map
+         type(error_t_c), intent(inout) :: error
+         type(c_ptr)                    :: get_grid_c
+      end function get_grid_c
    end interface
 
    !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
@@ -55,6 +63,8 @@ end function get_grid_map_c
    type :: grid_map_t
       type(c_ptr), private   :: ptr
    contains
+      ! get a reference to a grid
+      procedure :: get_grid => get
       ! Deallocate the tuvx instance
       final :: finalize_grid_map_t
    end type grid_map_t
@@ -80,6 +90,18 @@ function grid_map_t_constructor() result(this)
       this%ptr = c_null_ptr
    end function grid_map_t_constructor
 
+   subroutine get(this, grid, error)
+      use musica_util, only: error_t, error_t_c
+      type(grid_map_t), intent(inout) :: this
+      type(grid_t), pointer          :: grid
+      type(error_t), intent(inout)   :: error
+      type(error_t_c)                :: error_c
+
+      grid = grid_t()
+      grid%ptr = get_grid_c(this%ptr, error_c)
+      error = error_t(error_c)
+   end subroutine get
+
    subroutine finalize_grid_map_t(this)
       type(grid_map_t), intent(inout) :: this
 
@@ -130,7 +152,7 @@ function get_grids(this, error) result(grid_map)
 
       grid_map = grid_map_t()
       grid_map%ptr = get_grid_map_c(this%ptr, error_c)
-
+      
       error = error_t(error_c)
 
    end function get_grids