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@@ -0,0 +1,191 @@
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+extern crate serde_json;
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+#[macro_use]
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+extern crate serde_derive;
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+
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+
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+use serde_json::*;
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+use std::fs::File;
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+use std::iter::Iterator;
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+use std::io::prelude::*;
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+
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+#[derive(Deserialize)]
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+struct GodotClass {
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+ name: String,
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+ base_class: String,
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+ api_type: String,
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+ singleton: bool,
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+ instanciable: bool,
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+ constants: Map<String, Value>,
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+ methods: Vec<GodotMethod>
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+}
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+
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+#[derive(Deserialize)]
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+struct GodotMethod {
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+ name: String,
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+ return_type: String,
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+ arguments: Vec<GodotArgument>
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+}
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+
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+#[derive(Deserialize)]
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+struct GodotArgument {
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+ name: String,
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+ #[serde(rename = "type")]
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+ _type: String,
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+ default_value: String
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+}
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+
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+fn strip_name(s: &String) -> &str {
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+ if s.starts_with("_") {
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+ unsafe { s.slice_unchecked(1, s.len()) }
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+ } else {
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+ s.as_str()
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+ }
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+}
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+
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+fn main() {
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+ let base_dir = "/home/karroffel/Gamedev/dlscript_cpp_example/src/include/godot_cpp/";
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+
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+ let mut file = File::open("/home/karroffel/Development/api.json").unwrap();
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+
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+ let mut file_contents = String::new();
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+
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+ file.read_to_string(&mut file_contents);
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+
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+ let json: Vec<GodotClass> = serde_json::from_str::<Vec<GodotClass>>(&file_contents).unwrap();
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+
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+ for class in json {
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+ generate_class_binding((base_dir.to_string() + strip_name(&class.name) + ".h").as_str(), &class);
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+ }
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+}
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+
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+fn generate_class_binding(filename: &str, class: &GodotClass) {
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+ let mut file = File::create(filename).unwrap();
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+
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+ file.write_all(generate_class_content(class).as_bytes());
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+}
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+
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+fn generate_class_content(class: &GodotClass) -> String {
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+ let mut contents = String::new();
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+
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+ contents = contents + "#ifndef ";
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+ contents = contents + strip_name(&class.name).to_string().to_uppercase().as_str() + "_H\n";
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+
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+ contents = contents + "#define ";
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+ contents = contents + strip_name(&class.name).to_string().to_uppercase().as_str() + "_H\n\n";
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+
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+ contents = contents + "\n#include \"core/CoreTypes.h\"\n";
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+
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+ contents = contents + "\n#include <godot.h>\n\n\n";
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+
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+ if class.base_class != "" {
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+ contents = contents + "\n#include \"" + strip_name(&class.base_class) + ".h\"\n\n\n";
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+ }
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+
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+ contents = contents + "namespace godot {\n\n";
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+
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+ contents = contents + "class " + strip_name(&class.name);
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+
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+ if class.base_class != "" {
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+ contents = contents + " : public " + strip_name(&class.base_class);
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+ }
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+
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+ contents = contents + " {\n";
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+
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+ if class.base_class == "" {
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+ contents = contents + "protected:\n\tgodot_object *__core_object;\n\n";
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+ }
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+
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+ contents = contents + "public:\n\n";
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+
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+ // default constructor
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+
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+ {
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+ contents = contents + "\t" + strip_name(&class.name) + "() {\n";
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+ contents = contents + "\t\t\n";
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+ contents = contents + "\t}\n";
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+ }
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+
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+
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+ // pointer constructor
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+ {
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+ contents = contents + "\t" + strip_name(&class.name) + "(godot_object *ptr) {\n";
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+ contents = contents + "\t\t__core_object = ptr;\n";
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+ contents = contents + "\t}\n\n\n";
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+ }
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+
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+ for (name, value) in &class.constants {
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+ contents = contents + "\tconst static int " + name.as_str() + " = " + value.as_i64().unwrap().to_string().as_str() + ";\n";
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+ }
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+
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+ contents += "\n\n";
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+
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+ for method in &class.methods {
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+ contents = contents + "\t" + method.return_type.as_str() + " " + method.name.as_str() + "(";
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+
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+ for (i, argument) in (&method.arguments).iter().enumerate() {
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+ if !is_primitive(&argument._type) {
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+ contents += "const "
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+ }
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+ contents = contents + argument._type.as_str();
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+ if !is_primitive(&argument._type) {
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+ contents += "&";
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+ }
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+ contents = contents + " " + argument.name.as_str();
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+ if i != method.arguments.len() - 1 {
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+ contents += ", ";
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+ }
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+ }
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+
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+ contents = contents + ") {\n";
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+
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+ contents = contents + "\t\tstatic godot_method_bind *mb = NULL;\n"
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+ + "\t\tif (mb == NULL) {\n"
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+ + "\t\t\tmb = godot_method_bind_get_method(\"" + class.name.as_str() + "\", \"" + method.name.as_str() + "\");\n"
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+ + "\t\t}\n";
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+
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+ if method.return_type != "void" {
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+ contents = contents + "\t\t" + method.return_type.as_str() + " ret;" + "\n";
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+ }
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+
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+ contents = contents + "\t\tconst void *args[] = {\n";
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+
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+ for argument in &method.arguments {
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+ contents = contents + "\t\t\t";
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+ if is_primitive(&argument._type) {
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+ contents = contents + "&" + argument.name.as_str();
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+ } else {
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+ contents = contents + "(void *) &" + argument.name.as_str();
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+ }
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+ contents = contents + ",\n";
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+ }
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+
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+ contents = contents + "\t\t};\n";
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+
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+ contents = contents + "\t\tgodot_method_bind_ptrcall(mb, __core_object, args, " + if method.return_type == "void" { "NULL" } else { "&ret" } + ");\n";
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+
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+ if method.return_type != "void" {
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+ contents = contents + "\t\treturn ret;\n";
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+ }
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+
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+ contents = contents + "\t}\n\n";
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+ }
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+
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+ contents = contents + "};\n\n";
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+
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+ contents = contents + "}\n";
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+
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+ contents = contents + "#endif\n";
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+
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+ contents
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+}
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+
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+
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+fn is_core_type(name: &String) -> bool {
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+ let core_types = vec!("Vector2", "Vector3", "String", "Variant");
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+ core_types.contains(&name.as_str())
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+}
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+
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+fn is_primitive(name: &String) -> bool {
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+ let core_types = vec!("int", "bool", "real", "float");
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+ core_types.contains(&name.as_str())
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+}
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Karroffel