add example bind_vector

Author: peacalm

example/bind_vector/test.cpp

@@ -0,0 +1,54 @@
+// Copyright (c) 2024 Li Shuangquan. All Rights Reserved.
+//
+// Licensed under the MIT License (the "License"); you may not use this file
+// except in compliance with the License. You may obtain a copy of the License
+// at
+//
+//   http://opensource.org/licenses/MIT
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+// License for the specific language governing permissions and limitations
+// under the License.
+
+#include <peacalm/luaw.h>
+
+#include <vector>
+
+int main() {
+  peacalm::luaw l;
+
+  using VD       = std::vector<double>;
+  using SharedVD = std::shared_ptr<VD>;
+
+  // Constructor
+  l.set("NewVD", []() { return std::make_shared<VD>(); });
+
+  l.register_member<const double& (VD::*)(size_t) const>("at", &VD::at);
+  // Fake member function: to stimulate the operator[]
+  l.register_member<void (VD::*)(int, double)>(
+      "set_at", [](VD* p, int idx, double v) { (*p)[idx] = v; });
+
+  l.register_member("size", &VD::size);
+  l.register_member("empty", &VD::empty);
+
+  l.register_member("clear", &VD::clear);
+  // Fake member function: to stimulate insert
+  l.register_member<void (VD::*)(int, double)>(
+      "insert_at", [](VD* p, int idx, double v) {
+        p->insert(std::next(p->begin(), idx), v);
+      });
+
+  l.register_member<void (VD::*)(const double&)>("push_back", &VD::push_back);
+  l.register_member("pop_back", &VD::pop_back);
+
+  l.register_member<void (VD::*)(size_t)>("resize", &VD::resize);
+
+  int retcode = l.dofile("test.lua");
+  if (retcode != LUA_OK) {
+    l.log_error_out();
+    return retcode;
+  }
+  return 0;
+}

example/bind_vector/test.lua

@@ -0,0 +1,50 @@
+printv = function(v, msg)
+  t = {'['}
+  for i = 0, v:size() - 1 do
+    if i > 0 then
+    table.insert(t, #t + 1, ', ')
+    end
+    table.insert(t, #t + 1, v:at(i))
+  end
+  table.insert(t, #t + 1, ']')
+  if msg ~= nil then
+    print(msg, table.concat(t))
+  else
+    print(table.concat(t))
+  end
+end
+
+v = NewVD();
+assert(v:size() == 0)
+assert(v:empty())
+for i = 0, 4 do
+  v:push_back(i)
+end
+printv(v, 'init 0~4')
+
+assert(v:size() == 5)
+assert(not v:empty())
+assert(v:at(2) == 2)
+
+v:pop_back()
+assert(v:size() == 4)
+printv(v, 'pop back')
+
+v:set_at(2, -1)
+assert(v:at(2) == -1)
+printv(v, 'v[2] = -1')
+
+v:insert_at(0, 1);
+printv(v, 'insert_at(0, 1)')
+
+v:set_at(1, 2)
+printv(v, 'v[1] = 2')
+
+v:clear()
+assert(v:empty())
+printv(v, 'clear')
+
+v:resize(3)
+printv(v, 'resize(3)')
+
+print('END')