Add support for struct containing arrays

examples/ext/lib_test/lib_test/gen/config.json

@@ -5,6 +5,10 @@
     "variables": [
     ],
     "functions": [
+        "// func_TTAPSa_args_V",
+        "func_TACS_args_V"
+    ],
+    "//functions": [
         "func_V_args_V",
         "func_Pi_args_V",
         "func_V_args_Pi",
@@ -36,7 +40,17 @@
         "func_pppTAPS_args_V",
         "func_V_args_pTAPS",
         "func_ppTAPS_args_ppTAPS",
-        "func_pppTAPS_args_pppTAPS"
+        "func_pppTAPS_args_pppTAPS",
+        "func_TTAPSa_args_V",
+        "//func_TTAPSa_args_TTAPSa",
+        "//func_V_args_pTTAPSa",
+        "//func_ppTTAPSa_args_ppTTAPSa",
+        "//func_pppTTAPSa_args_pppTTAPSa",
+        "func_TACS_args_V",
+        "//func_TACS_args_TACS",
+        "//func_V_args_pTACS",
+        "//func_ppTACS_args_ppTACS",
+        "//func_pppTACS_args_pppTACS"
     ],
     "debug_ast" : "True",
     "debug_acid" : "True",

examples/ext/lib_test/lib_test/lib_test.cc

@@ -1,10 +1,12 @@
 #include <string>
 #include <iostream>
+#include <algorithm>
 #include <pybind11/pybind11.h>
 #include <pybind11/detail/common.h>
 #include "lib_test.h"
 
 using namespace std;
+namespace py = pybind11;
 
 PYBIND11_MODULE(lib_test, m) {
     #include "gen/py_module.pybind11"

examples/ext/lib_test/tests/test_lib_test.py

@@ -251,6 +251,34 @@ def test_func_pppTAPS_args_pppTAPS():
     assert(inout.field__P_1 == 23);
     assert(inout.field__P_2 == 23);
 
+def test_struct_field_array_of_structs_immutable_len():
+    a = CS()
+    b = PS()
+    assert(len(a.field_APS_1) == 3)
+    a.field_APS_1 = [b]
+    assert(len(a.field_APS_1) == 3)
+    a.field_APS_1 = [b,b]
+    assert(len(a.field_APS_1) == 3)
+    a.field_APS_1 = [b,b,b]
+    assert(len(a.field_APS_1) == 3)
+    a.field_APS_1 = []
+    assert(len(a.field_APS_1) == 3)
+
+@pytest.mark.skip("throw exception instead of warnning")
+def test_struct_field_array_of_structs_accept_unityped_arr_only():
+    a = CS()
+    b = PS()
+    with pytest.raises(Exception):
+        a.field_APS_1 = [b,"invalid_type"]
+
+def test_struct_field_array_of_structs_of_structs_set_get():
+    a = CS()
+    b = PS()
+    b.field__P_1 = 23
+    b.field__P_2 = 23
+    a.field_APS_1 = [b]
+    assert(a.field_APS_1[0].field__P_1 == 23)
+    assert(a.field_APS_1[0].field__P_2 == 23)
 
 
 def PS_to_string(ps):

pEpACIDgen/gen_backend/gen_pybind11.ysl2

@@ -4,6 +4,8 @@ tstylesheet {
     template "module" {
         document("py_module.pybind11", "text") {
             ||
+                namespace py = pybind11;
+
                 // INSERT COOL ASCII ART HERE
                 // METHOD
                 `` apply "method"
@@ -37,19 +39,19 @@ tstylesheet {
         []
         (
         ``apply "use", mode="arg_list_from_py"
-        ) -> pybind11::tuple
+        ) -> py::tuple
         {
             ``apply "return", mode="create"
             ``apply "use", mode="create_args_c"
             `apply "return", mode="assign"`::«@name»(
             ``apply "use", mode="arg_list_c"
             );
-            return pybind11::make_tuple(
+            return py::make_tuple(
                 `apply "return", mode="return"``if "count(use)>0" > ,`
                 ``apply "use", mode="return_args_as_tuple"
             );
         },
-        pybind11::return_value_policy::copy);
+        py::return_value_policy::copy);
         ||
     }
 
@@ -67,7 +69,7 @@ tstylesheet {
         const "type", "@type";
         choose {
             when "contains($type,'void')" {
-                > pybind11::none()
+                > py::none()
             } otherwise {
                 choose {
                     when "contains($type,'*')" {
@@ -174,8 +176,8 @@ tstylesheet {
 
     template "struct" {
         ||
-        pybind11::class_<«@name»>(m, "«@name»")
-            .def(pybind11::init([]() { return «@name»(); }))
+        py::class_<«@name»>(m, "«@name»")
+            .def(py::init([]() { return «@name»(); }))
         ||
         apply "field" {
             with "structname", "@name"
@@ -185,40 +187,86 @@ tstylesheet {
         |
     }
 
+
     template "field" {
         param "structname";
-        ||
-        .def_property("«@name»",
-        [](::«$structname» &obj) -> «@type» {
-            //cout << "«$structname» ::«@name»: getter called" << endl;
-            return obj.«@name»;
-        },
-        ||
+        param "name", "@name";
+        param "type", "@type";
+        const "array_type", "substring-before($type, '[')";
+        const "array_len", "substring-before(substring-after($type, '['),']')";
+
         choose {
-            when "@type = 'const char *'" {
-            ||
-            [](::«$structname» &obj, «@type» cstr) -> void {
-                //cout << "«$structname»::«@name»: setter called" << cstr << endl;
-                obj.«@name» = strdup(cstr);
-            },
-            pybind11::return_value_policy::copy)
-            ||
+            when "string-length($array_len) > 0" {
+                ||
+                .def_property("«$name»",
+                [](::«$structname» &obj) -> py::list {
+                    //cout << "«$structname»::«$name»: getter called" << endl;
+                    py::list l;
+                    for(int i=0; i < «$array_len»; ++i) {
+                        l.append(obj.«$name»[i]);
+                    }
+                    return l;
+                },
+                [](::«$structname» &obj, py::list val) -> void {
+                    // cout << "«$structname»::«$name»: getter called" << endl;
+                    if(val.size() <= 0) {
+                        // empty array given, doing nothing (static c array cant be cleared)
+                    } else {
+                        int cpy_amt = std::min(static_cast<int>(val.size()), «$array_len»);
+                        bool isUnitypedArrayOf = true;
+                        for(int i=0; i < cpy_amt; ++i) {
+                            if (!py::isinstance<«$array_type»>(val[i])) {
+                                isUnitypedArrayOf = false;
+                                break;
+                            }
+                        }
+                        if(!isUnitypedArrayOf) {
+                            cout << "«$structname»::«$name» - setter error: is not a unityped array of type «$array_type»" << std::endl;
+                        } else {
+                            for(int i=0; i < cpy_amt; ++i) {
+                                obj.«$name»[i] = val[i].cast<«$array_type»>();
+                            }
+                        }
+                    }
+                },
+                py::return_value_policy::copy)
+
+                ||
             } otherwise {
-            ||
-            [](::«$structname» &obj, «@type» val) -> void {
-                //cout << "«$structname»::«@name»: setter called" << endl;
-                obj.«@name» = val;
-            },
-            pybind11::return_value_policy::copy)
+                ||
+                .def_property("«@name»",
+                [](::«$structname» &obj) -> «$type» {
+                    //cout << "«$structname» ::«@name»: getter called" << endl;
+                    return obj.«@name»;
+                },
+                ||
+                choose {
+                    when "$type = 'const char *'" {
+                        ||
+                        [](::«$structname» &obj, «$type» cstr) -> void {
+                            //cout << "«$structname»::«@name»: setter called" << cstr << endl;
+                            obj.«@name» = strdup(cstr);
+                        },
+                        py::return_value_policy::copy)
+                        ||
+                    } otherwise {
+                        ||
+                        [](::«$structname» &obj, «$type» val) -> void {
+                            //cout << "«$structname»::«@name»: setter called" << endl;
+                            obj.«@name» = val;
+                        },
+                        py::return_value_policy::copy)
 
-            ||
+                        ||
+                    }
+                }
             }
         }
     }
 
     template "enum" {
         ||
-        pybind11::enum_<::«@name»>(m, "«@name»")
+        py::enum_<::«@name»>(m, "«@name»")
         ``apply item
         ;