Parm parse getter query for selected types (int, bool, Real) (#158)

* adding wrappers for parmparse get and query for selected types with tests

Co-authored-by: Edoardo Zoni <ezoni@lbl.gov>
Co-authored-by: Axel Huebl <axelhuebl@lbl.gov>

* initialize-finalize called once for all tests

Co-authored-by: Axel Huebl <axel.huebl@plasma.ninja>

* add dir for input file

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* Cleaning

* Cleaning

* Fix typo

---------

Co-authored-by: Edoardo Zoni <ezoni@lbl.gov>
Co-authored-by: Axel Huebl <axelhuebl@lbl.gov>
Co-authored-by: Axel Huebl <axel.huebl@plasma.ninja>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

src/Base/ParmParse.cpp

@@ -30,7 +30,7 @@ void init_ParmParse(py::module &m)
 
         .def("remove", &ParmParse::remove)
 
-        .def("addfile", &ParmParse::addfile)
+        .def_static("addfile", &ParmParse::addfile)
 
         .def("add", py::overload_cast<char const*, bool const>(&ParmParse::add))
         .def("add", py::overload_cast<char const*, int const>(&ParmParse::add))
@@ -52,6 +52,41 @@ void init_ParmParse(py::module &m)
         .def("addarr", py::overload_cast<char const*, std::vector<amrex::Box> const &>(&ParmParse::addarr))
 
         // TODO: getters and queries
+        .def("get_bool",
+            [](ParmParse &pp, std::string name, int ival) {
+                bool ref;
+                pp.get(name.c_str(), ref, ival);
+                return ref;
+            },
+            "parses input values", py::arg("name"), py::arg("ival")=0
+         )
+
+        .def("get_int",
+            [](ParmParse &pp, std::string name, int ival) {
+                int ref;
+                pp.get(name.c_str(), ref, ival);
+                return ref;
+            },
+            "parses input values", py::arg("name"), py::arg("ival")=0
+         )
+
+        .def("get_real",
+            [](ParmParse &pp, std::string name, int ival) {
+                amrex::Real ref;
+                pp.get(name.c_str(), ref, ival);
+                return ref;
+            },
+            "parses input values", py::arg("name"), py::arg("ival")=0
+         )
+
+         .def("query_int",
+             [](ParmParse &pp, std::string name, int ival) {
+                 int ref;
+                 bool exist = pp.query(name.c_str(), ref, ival);
+                 return std::make_tuple(exist,ref);
+             },
+             "queries input values", py::arg("name"), py::arg("ival")=0
+         )
 
         // TODO: dumpTable, hasUnusedInputs, getUnusedInputs, getEntries
     ;

tests/parmparse_inputs

@@ -0,0 +1,3 @@
+param.dt = 1.e-5
+param.ncell = 100
+param.do_pml = 1

tests/test_parmparse.py

@@ -0,0 +1,18 @@
+# -*- coding: utf-8 -*-
+import os
+
+import amrex.space3d as amr
+
+
+def test_parmparse():
+    pp = amr.ParmParse("")
+    dir_name = os.path.dirname(__file__)
+    pp.addfile(os.path.join(dir_name, "parmparse_inputs"))
+    pp_param = amr.ParmParse("param")
+    _, ncell = pp_param.query_int("ncell")
+    dt = pp_param.get_real("dt")
+    dopml = pp_param.get_bool("do_pml")
+
+    assert dopml == True
+    assert dt == 1.0e-5
+    assert ncell == 100