feat: add examples

examples/parse_file/array_of_tables_example.cpp

@@ -0,0 +1,135 @@
+#include <toml.hpp>
+
+#include <iostream>
+#include <map>
+
+#include <cassert>
+
+int main()
+{
+    const auto root = toml::parse("array_of_tables_example.toml");
+
+    // using member functions
+    {
+        assert(root.at("points").is_array());
+        assert(root.at("points").at(0).is_table());
+        assert(root.at("points").at(1).is_table());
+        assert(root.at("points").at(2).is_table());
+
+        assert(root.at("points").at(0).at("x").as_integer() == 1);
+        assert(root.at("points").at(0).at("y").as_integer() == 2);
+        assert(root.at("points").at(0).at("z").as_integer() == 3);
+
+        assert(root.at("points").at(1).at("x").as_integer() == 7);
+        assert(root.at("points").at(1).at("y").as_integer() == 8);
+        assert(root.at("points").at(1).at("z").as_integer() == 9);
+
+        assert(root.at("points").at(2).at("x").as_integer() == 2);
+        assert(root.at("points").at(2).at("y").as_integer() == 4);
+        assert(root.at("points").at(2).at("z").as_integer() == 8);
+
+
+        assert(root.at("products").at(0).at("name").as_string()  == "Hammer");
+        assert(root.at("products").at(0).at("sku" ).as_integer() == 738594937);
+
+        assert(root.at("products").at(1).as_table().empty());
+
+        assert(root.at("products").at(2).at("name" ).as_string()  == "Nail");
+        assert(root.at("products").at(2).at("sku"  ).as_integer() == 284758393);
+        assert(root.at("products").at(2).at("color").as_string()  == "gray");
+
+        assert(root.at("fruits").at(0).at("name").as_string()  == "apple");
+        assert(root.at("fruits").at(0).at("physical").at("color").as_string()  == "red");
+        assert(root.at("fruits").at(0).at("physical").at("shape").as_string()  == "round");
+        assert(root.at("fruits").at(0).at("varieties").at(0).at("name").as_string()  == "red delicious");
+        assert(root.at("fruits").at(0).at("varieties").at(1).at("name").as_string()  == "granny smith");
+
+        assert(root.at("fruits").at(1).at("name").as_string()  == "banana");
+        assert(root.at("fruits").at(1).at("varieties").at(0).at("name").as_string()  == "plantain");
+    }
+
+    // using toml::find
+    {
+        assert(toml::find<int>(root, "points", 0, "x") == 1);
+        assert(toml::find<int>(root, "points", 0, "y") == 2);
+        assert(toml::find<int>(root, "points", 0, "z") == 3);
+
+        assert(toml::find<int>(root, "points", 1, "x") == 7);
+        assert(toml::find<int>(root, "points", 1, "y") == 8);
+        assert(toml::find<int>(root, "points", 1, "z") == 9);
+
+        assert(toml::find<int>(root, "points", 2, "x") == 2);
+        assert(toml::find<int>(root, "points", 2, "y") == 4);
+        assert(toml::find<int>(root, "points", 2, "z") == 8);
+
+        const auto points = toml::find<
+                std::vector<std::map<std::string, int>>
+            >(root, "points");
+
+        assert(points.at(0).at("x") == 1);
+        assert(points.at(0).at("y") == 2);
+        assert(points.at(0).at("z") == 3);
+
+        assert(points.at(1).at("x") == 7);
+        assert(points.at(1).at("y") == 8);
+        assert(points.at(1).at("z") == 9);
+
+        assert(points.at(2).at("x") == 2);
+        assert(points.at(2).at("y") == 4);
+        assert(points.at(2).at("z") == 8);
+
+        struct product_t
+        {
+            product_t(const toml::value& v)
+                : name (toml::find_or<std::string  >(v, "name", "")),
+                  sku  (toml::find_or<std::uint64_t>(v, "sku", 0)),
+                  color(toml::find_or<std::string  >(v, "color", ""))
+            {}
+            std::string   name;
+            std::uint64_t sku;
+            std::string   color;
+        };
+
+        const auto products = toml::find<std::vector<product_t>>(root, "products");
+
+        assert(products.at(0).name  == "Hammer");
+        assert(products.at(0).sku   == 738594937);
+        assert(products.at(0).color == "");
+
+        assert(products.at(1).name  == "");
+        assert(products.at(1).sku   == 0);
+        assert(products.at(1).color == "");
+
+        assert(products.at(2).name  == "Nail");
+        assert(products.at(2).sku   == 284758393);
+        assert(products.at(2).color == "gray");
+
+        struct fruit_t
+        {
+            fruit_t(const toml::value& v)
+                : name(toml::find<std::string>(v, "name")),
+                  physical (toml::find<std::map<std::string, std::string>>(v, "physical")),
+                  varieties(toml::find<std::vector<std::map<std::string, std::string>>>(v, "varieties"))
+            {}
+
+            std::string name;
+            std::map<std::string, std::string> physical;
+            std::vector<std::map<std::string, std::string>> varieties;
+        };
+
+        const auto fruits = toml::find<std::vector<fruit_t>>(root, "fruits");
+
+        assert(fruits.at(0).name == "apple");
+        assert(fruits.at(0).physical.at("color") == "red");
+        assert(fruits.at(0).physical.at("shape") == "round");
+        assert(fruits.at(0).varieties.at(0).at("name") == "red delicious");
+        assert(fruits.at(0).varieties.at(1).at("name") == "granny smith");
+
+        assert(fruits.at(1).name == "banana");
+        assert(fruits.at(1).varieties.at(0).at("name") == "plantain");
+    }
+
+    std::cout << "ok." << std::endl;
+
+    return 0;
+}