Lattice: Line Docs & Rename (#3815)

* Lattice: Line Docs & Rename

Rename the `lattice` element type to `line` and add documentation
for it.

* Add `{}` for Dave :)

1 files changed, 15 insertions, 2 deletions

diff --git a/Source/AcceleratorLattice/AcceleratorLattice.cpp b/Source/AcceleratorLattice/AcceleratorLattice.cpp
index 1c22e6244..e05167c26 100644
--- a/Source/AcceleratorLattice/AcceleratorLattice.cpp
+++ b/Source/AcceleratorLattice/AcceleratorLattice.cpp
@@ -1,7 +1,10 @@
-/* Copyright 2022 David Grote
+/* Copyright 2022-2023 The Regents of the University of California, through Lawrence
+ *           Berkeley National Laboratory (subject to receipt of any required
+ *           approvals from the U.S. Dept. of Energy). All rights reserved.
  *
  * This file is part of WarpX.
  *
+ * Authors: David Grote, Axel HUebl
  * License: BSD-3-Clause-LBNL
  */
 #include "AcceleratorLattice.H"
@@ -11,6 +14,9 @@
 
 #include <AMReX_REAL.H>
 
+#include <algorithm>
+
+
 AcceleratorLattice::AcceleratorLattice ()
 {
 
@@ -35,6 +41,13 @@ AcceleratorLattice::ReadLattice (std::string const & root_name, amrex::ParticleR
         m_lattice_defined = true;
     }
 
+    bool reverse = false;
+    pp_lattice.queryAdd("reverse", reverse);
+
+    if (reverse) {
+        std::reverse(lattice_elements.begin(), lattice_elements.end());
+    }
+
     // Loop through lattice elements
     for (std::string const & element_name : lattice_elements) {
         // Check the element type
@@ -52,7 +65,7 @@ AcceleratorLattice::ReadLattice (std::string const & root_name, amrex::ParticleR
         else if (element_type == "plasmalens") {
             h_plasmalens.AddElement(pp_element, z_location);
         }
-        else if (element_type == "lattice") {
+        else if (element_type == "line") {
             ReadLattice(element_name, z_location);
         }
         else {