lua-protobuf-rs 0.3.0

lua protobuf
Documentation 
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use anyhow::anyhow;
use derive_more::{Deref, From, Into};
use mlua::UserDataMethods;
use mlua::prelude::LuaUserData;
use protobuf::reflect::FileDescriptor;

use crate::descriptor::enum_descriptor::LuaEnumDescriptor;
use crate::descriptor::field_descriptor::LuaFieldDescriptor;
use crate::descriptor::message_descriptor::LuaMessageDescriptor;
use crate::descriptor::service_descriptor::LuaServiceDescriptor;
use crate::descriptor_proto::file_descriptor_proto::LuaFileDescriptorProto;
use crate::syntax::LuaSyntax;

#[derive(Clone, PartialEq, Eq, Hash, Debug, Deref, From, Into, mlua::FromLua)]
pub struct LuaFileDescriptor(pub FileDescriptor);

impl LuaUserData for LuaFileDescriptor {
    fn add_methods<M: UserDataMethods<Self>>(methods: &mut M) {
        methods.add_method("name", |_, this, ()| Ok(this.name().to_string()));

        methods.add_method("package", |_, this, ()| Ok(this.package().to_string()));

        methods.add_method("syntax", |_, this, ()| Ok(LuaSyntax(this.syntax())));

        methods.add_method("messages", |_, this, ()| {
            let messages: Vec<LuaMessageDescriptor> = this.messages().map(From::from).collect();
            Ok(messages)
        });

        methods.add_method("enums", |_, this, ()| {
            let enums: Vec<LuaEnumDescriptor> = this.enums().map(From::from).collect();
            Ok(enums)
        });

        methods.add_method("services", |_, this, ()| {
            let services: Vec<LuaServiceDescriptor> = this.services().map(From::from).collect();
            Ok(services)
        });

        methods.add_method("extensions", |_, this, ()| {
            let descriptors: Vec<LuaFieldDescriptor> = this.extensions().map(From::from).collect();
            Ok(descriptors)
        });

        methods.add_method(
            "message_by_package_relative_name",
            |_, this, name: String| {
                let descriptor: Option<LuaMessageDescriptor> = this
                    .message_by_package_relative_name(name.as_str())
                    .map(From::from);
                Ok(descriptor)
            },
        );

        methods.add_method("enum_by_package_relative_name", |_, this, name: String| {
            let descriptor: Option<LuaEnumDescriptor> = this
                .enum_by_package_relative_name(name.as_str())
                .map(From::from);
            Ok(descriptor)
        });

        methods.add_method("message_by_full_name", |_, this, name: String| {
            let descriptor: Option<LuaMessageDescriptor> =
                this.message_by_full_name(name.as_str()).map(From::from);
            Ok(descriptor)
        });

        methods.add_method("enum_by_full_name", |_, this, name: String| {
            let descriptor: Option<LuaEnumDescriptor> =
                this.enum_by_full_name(name.as_str()).map(From::from);
            Ok(descriptor)
        });

        methods.add_function(
            "new_dynamic",
            |_, (proto, dependencies): (LuaFileDescriptorProto, Vec<LuaFileDescriptor>)| {
                let descriptor: LuaFileDescriptor = FileDescriptor::new_dynamic(
                    proto.into(),
                    dependencies
                        .into_iter()
                        .map(Into::into)
                        .collect::<Vec<FileDescriptor>>()
                        .as_slice(),
                )
                .map_err(|e| anyhow!(e))?
                .into();
                Ok(descriptor)
            },
        );

        methods.add_function(
            "new_dynamic_fds",
            |_, (protos, dependencies): (Vec<LuaFileDescriptorProto>, Vec<LuaFileDescriptor>)| {
                let descriptors: Vec<LuaFileDescriptor> = FileDescriptor::new_dynamic_fds(
                    protos.into_iter().map(Into::into).collect(),
                    dependencies
                        .into_iter()
                        .map(Into::into)
                        .collect::<Vec<FileDescriptor>>()
                        .as_slice(),
                )
                .map_err(|e| anyhow!(e))?
                .into_iter()
                .map(Into::into)
                .collect();
                Ok(descriptors)
            },
        );

        methods.add_method("proto", |_, this, ()| {
            Ok::<LuaFileDescriptorProto, _>(this.proto().clone().into())
        });

        methods.add_method("deps", |_, this, ()| {
            let descriptors: Vec<LuaFileDescriptor> = this
                .deps()
                .iter()
                .map(Clone::clone)
                .map(From::from)
                .collect();
            Ok(descriptors)
        });

        methods.add_method("public_deps", |_, this, ()| {
            let descriptors: Vec<LuaFileDescriptor> = this.public_deps().map(From::from).collect();
            Ok(descriptors)
        });
    }
}