gluon_language-server 0.5.0

Language server providing completion for gluon
Documentation 
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extern crate gluon_language_server;
extern crate languageserver_types;

extern crate jsonrpc_core;
extern crate serde_json;
extern crate serde;
extern crate url;

mod support;

use std::io::Write;

use languageserver_types::{Hover, MarkedString, Position, TextDocumentPositionParams,
                           TextDocumentIdentifier};

fn hover<W: ?Sized>(stdin: &mut W, id: u64, uri: &str, position: Position)
where
    W: Write,
{
    let hover = support::method_call(
        "textDocument/hover",
        id,
        TextDocumentPositionParams {
            text_document: TextDocumentIdentifier { uri: support::test_url(uri) },
            position: position,
        },
    );

    support::write_message(stdin, hover).unwrap();
}

const STREAM_SOURCE: &'static str = r#"
let prelude = import "std/prelude.glu"
and { Option, Num } = prelude
and { (+) } = prelude.num_Int

type Stream_ a =
    | Value a (Stream a)
    | Empty
and Stream a = Lazy (Stream_ a)

let from f : (Int -> Option a) -> Stream a =
        let from_ i =
                lazy (\_ ->
                    match f i with
                        | Some x -> Value x (from_ (i + 1))
                        | None -> Empty
                )
        in from_ 0

{ from }
"#;

#[test]
fn simple_hover() {
    let hover: Hover = support::send_rpc(|mut stdin| {
        let uri = "file:///c%3A/test/test.glu";
        support::did_open(stdin, uri, "123");

        hover(
            stdin,
            2,
            uri,
            Position {
                line: 0,
                character: 2,
            },
        );
    });

    assert_eq!(
        hover,
        Hover {
            contents: vec![MarkedString::String("Int".into())],
            range: None,
        }
    );
}

#[test]
fn identifier() {
    let hover: Hover = support::send_rpc(|mut stdin| {
        let src = r#"
let test = 1
test
"#;
        support::did_open(stdin, "test", src);

        hover(
            stdin,
            2,
            "test",
            Position {
                line: 2,
                character: 2,
            },
        );
    });

    assert_eq!(
        hover,
        Hover {
            contents: vec![MarkedString::String("Int".into())],
            range: None,
        }
    );
}

#[test]
fn stream() {
    let hover: Hover = support::send_rpc(|mut stdin| {

        support::did_open(stdin, "stream", STREAM_SOURCE);

        hover(
            stdin,
            2,
            "stream",
            Position {
                line: 13,
                character: 29,
            },
        );
    });

    assert_eq!(
        hover,
        Hover {
            contents: vec![MarkedString::String("Int".into())],
            range: None,
        }
    );
}