Started creating scripting library/namespace and added sol2 for interfacing

1 files changed, 76 insertions, 0 deletions

diff --git a/lib/sol2/examples/source/containers_as_table.cpp b/lib/sol2/examples/source/containers_as_table.cpp
new file mode 100644
index 0000000..5a0ce02
--- /dev/null
+++ b/lib/sol2/examples/source/containers_as_table.cpp
@@ -0,0 +1,76 @@
+#define SOL_ALL_SAFETIES_ON 1
+#include <sol/sol.hpp>
+
+#include <vector>
+#include <map>
+#include "assert.hpp"
+#include <iostream>
+
+
+// nested allows serialization of maps with vectors inside, and vice-versa
+// all from a nested structure of Lua tables
+// it has less control over which pieces are considered tables in Lua,
+// and which ones are considered userdata, but it covers a good 90% of cases
+// where someone wants to handle a nested table
+void demo(sol::nested<std::map<std::string, std::vector<std::string>>> src) {
+	std::cout << "demo, sol::nested<...>" << std::endl;
+	const auto& listmap = src.value();
+	c_assert(listmap.size() == 2);
+	for (const auto& kvp : listmap) {
+		const std::vector<std::string>& strings = kvp.second;
+		c_assert(strings.size() == 3);
+		std::cout << "\t" << kvp.first << " = ";
+		for (const auto& s : strings) {
+			std::cout << "'" << s << "'" << " ";
+		}
+		std::cout << std::endl;
+	}
+	std::cout << std::endl;
+}
+
+// This second demo is equivalent to the first
+// Nota bene the signature here
+// Every container-type that's meant to be 
+// a table must be wrapped in `sol::as_table_t`
+// it's verbose, so feel free to use typedefs to make it easy on you
+// you can mix which parts are considered tables from Lua, and which parts
+// are considered other kinds of types, such as userdata and the like
+void demo_explicit (sol::as_table_t<std::map<std::string, sol::as_table_t<std::vector<std::string>>>> src) {
+	std::cout << "demo, explicit sol::as_table_t<...>" << std::endl;
+	// Have to access the "source" member variable for as_table_t
+	const auto& listmap = src.value();
+	c_assert(listmap.size() == 2);
+	for (const auto& kvp : listmap) {
+		// Have to access the internal "source" for the inner as_table_t, as well
+		const std::vector<std::string>& strings = kvp.second.value();
+		c_assert(strings.size() == 3);
+		std::cout << "\t" << kvp.first << " = ";
+		for (const auto& s : strings) {
+			std::cout << "'" << s << "'" << " ";
+		}
+		std::cout << std::endl;
+	}
+	std::cout << std::endl;
+}
+
+int main(int, char**) {
+	std::cout << "=== containers retrieved from lua tables ===" << std::endl;
+	
+	sol::state lua;
+	// bind the function
+	lua.set_function("f", &demo);
+	lua.set_function("g", &demo_explicit);
+	// Call it with a table that has string sequences set to distinct keys
+	lua.script(R"(
+t = { 
+	key1 = {'hello', 'there', 'world'},
+	key2 = {'bark', 'borf', 'woof'}
+}
+f(t)
+g(t)
+	)");
+
+	std::cout << std::endl;
+
+	return 0;
+}
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