Deserialize extension_api.json and generate code

godot-rust · Mar 22, 2022 · fbd1502 · fbd1502
1 parent 6859516
commit fbd1502
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Showing 6 changed files with 71 additions and 5 deletions.
diff --git a/.gitignore b/.gitignore
@@ -1,3  1,8 @@
 .vscode
 .idea
 target/
-Cargo.lock
 Cargo.lock
 
 # Input JSONs and code generation
 /gdext-codegen/input/
 /gdext-sys/src/gen/
diff --git a/gdext-codegen/Cargo.toml b/gdext-codegen/Cargo.toml
@@ -3,6  3,6 @@ name = "gdext-codegen"
 version = "0.1.0"
 edition = "2021"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
 [dependencies]
 miniserde = "0.1.16"
 quote = "1"
diff --git a/gdext-codegen/src/api_parser.rs b/gdext-codegen/src/api_parser.rs
@@ -0,0  1,55 @@
 use miniserde::{json, Deserialize};
 use quote::quote;
 use std::path::Path;
 
 // ----------------------------------------------------------------------------------------------------------------------------------------------
 // JSON models
 
 #[derive(Deserialize)]
 struct ExtensionApi {
     builtin_class_sizes: Vec<ClassSizes>,
 }
 
 #[derive(Deserialize)]
 struct ClassSizes {
     build_configuration: String,
     sizes: Vec<ClassSize>,
 }
 
 #[derive(Deserialize)]
 struct ClassSize {
     name: String,
     size: usize,
 }
 
 // ----------------------------------------------------------------------------------------------------------------------------------------------
 // Implementation
 
 pub struct ApiParser {}
 
 impl ApiParser {
     pub fn generate_file() {
         let tokens = quote! {
             struct Constants {
 
             }
         };
 
         Self::load_extension_api();
 
         let string = tokens.to_string();
 
         let _ = std::fs::create_dir("src/gen");
         std::fs::write("src/gen/extensions.rs", string).expect("failed to write extension file");
     }
 
     fn load_extension_api() {
         let path = concat!(env!("CARGO_MANIFEST_DIR"), "/input/extension_api.json");
 
         let build_config = "float_32"; // TODO infer this
 
         let json = std::fs::read_to_string(path).expect(&format!("failed to open file {:?}", path));
         println!("JSON: {}", &json[0..30]);
         let model: ExtensionApi = json::from_str(&json).expect("failed to deserialize JSON");
     }
 }
diff --git a/gdext-codegen/src/lib.rs b/gdext-codegen/src/lib.rs
@@ -1,3  1,7 @@
 mod api_parser;
 
 pub use api_parser::ApiParser;
 
 #[cfg(test)]
 mod tests {
     #[test]

diff --git a/gdext-sys/Cargo.toml b/gdext-sys/Cargo.toml
@@ -8,7  8,6 @@ edition = "2021"
 [features]
 "real_is_double" = []
 
-[dependencies]
-
 [build-dependencies]
 bindgen = "0.59"
 gdext-codegen = { path = "../gdext-codegen" }
diff --git a/gdext-sys/build.rs b/gdext-sys/build.rs
@@ -1,3  1,4 @@
 use gdext_codegen as gen;
 use std::{env, path::PathBuf};
 
 fn main() {
@@ -14,4  15,6 @@ fn main() {
     bindings
         .write_to_file(out_path.join("gdnative_interface.rs"))
         .expect("could not write gdnative_interface Rust bindings!");
 
     gen::ApiParser::generate_file();
 }