mirror of
https://github.com/ilyakooo0/helix.git
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wip: Basic LSP lifecycle requests/notifications.
This commit is contained in:
parent
8adcf5083f
commit
f03830b047
106
Cargo.lock
generated
106
Cargo.lock
generated
@ -330,6 +330,12 @@ dependencies = [
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"new_debug_unreachable",
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]
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[[package]]
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name = "futures"
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version = "0.1.30"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "4c7e4c2612746b0df8fed4ce0c69156021b704c9aefa360311c04e6e9e002eed"
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[[package]]
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name = "futures-core"
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version = "0.3.6"
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@ -357,6 +363,43 @@ dependencies = [
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"waker-fn",
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]
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[[package]]
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name = "futures-macro"
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version = "0.3.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "f57ed14da4603b2554682e9f2ff3c65d7567b53188db96cb71538217fc64581b"
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dependencies = [
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"proc-macro-hack",
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"proc-macro2",
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"quote",
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"syn",
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]
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[[package]]
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name = "futures-task"
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version = "0.3.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "4dd26820a9f3637f1302da8bceba3ff33adbe53464b54ca24d4e2d4f1db30f94"
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dependencies = [
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"once_cell",
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]
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[[package]]
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name = "futures-util"
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version = "0.3.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "8a894a0acddba51a2d49a6f4263b1e64b8c579ece8af50fa86503d52cd1eea34"
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dependencies = [
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"futures-core",
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"futures-macro",
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"futures-task",
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"pin-project",
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"pin-utils",
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"proc-macro-hack",
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"proc-macro-nested",
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"slab",
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]
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[[package]]
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name = "getrandom"
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version = "0.1.15"
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@ -400,9 +443,14 @@ dependencies = [
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name = "helix-lsp"
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version = "0.1.0"
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dependencies = [
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"anyhow",
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"futures-util",
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"glob",
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"jsonrpc-core",
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"lsp-types",
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"pathdiff",
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"serde",
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"serde_json",
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"shellexpand",
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"smol",
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"url",
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@ -424,6 +472,7 @@ dependencies = [
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"clap",
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"crossterm",
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"helix-core",
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"helix-lsp",
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"helix-view",
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"num_cpus",
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"smol",
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@ -495,6 +544,19 @@ dependencies = [
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"libc",
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]
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[[package]]
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name = "jsonrpc-core"
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version = "15.1.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "0745a6379e3edc893c84ec203589790774e4247420033e71a76d3ab4687991fa"
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dependencies = [
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"futures",
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"log",
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"serde",
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"serde_derive",
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"serde_json",
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]
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[[package]]
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name = "lazy_static"
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version = "1.4.0"
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@ -671,12 +733,38 @@ version = "2.1.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d4fd5641d01c8f18a23da7b6fe29298ff4b55afcccdf78973b24cf3175fee32e"
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[[package]]
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name = "pin-project"
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version = "0.4.27"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "2ffbc8e94b38ea3d2d8ba92aea2983b503cd75d0888d75b86bb37970b5698e15"
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dependencies = [
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"pin-project-internal",
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]
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[[package]]
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name = "pin-project-internal"
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version = "0.4.27"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "65ad2ae56b6abe3a1ee25f15ee605bacadb9a764edaba9c2bf4103800d4a1895"
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dependencies = [
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"proc-macro2",
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"quote",
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"syn",
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]
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[[package]]
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name = "pin-project-lite"
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version = "0.1.10"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e555d9e657502182ac97b539fb3dae8b79cda19e3e4f8ffb5e8de4f18df93c95"
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[[package]]
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name = "pin-utils"
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version = "0.1.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
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[[package]]
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name = "polling"
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version = "2.0.1"
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@ -690,6 +778,18 @@ dependencies = [
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"winapi",
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]
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[[package]]
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name = "proc-macro-hack"
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version = "0.5.18"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "99c605b9a0adc77b7211c6b1f722dcb613d68d66859a44f3d485a6da332b0598"
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[[package]]
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name = "proc-macro-nested"
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version = "0.1.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "eba180dafb9038b050a4c280019bbedf9f2467b61e5d892dcad585bb57aadc5a"
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[[package]]
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name = "proc-macro2"
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version = "1.0.24"
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@ -848,6 +948,12 @@ dependencies = [
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"libc",
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]
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[[package]]
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name = "slab"
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version = "0.4.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "c111b5bd5695e56cffe5129854aa230b39c93a305372fdbb2668ca2394eea9f8"
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[[package]]
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name = "smallvec"
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version = "1.4.2"
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@ -9,7 +9,12 @@ edition = "2018"
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[dependencies]
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lsp-types = { version = "0.82", features = ["proposed"] }
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smol = "1.2"
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url = "2.1.1"
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url = "2"
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pathdiff = "0.2.0"
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shellexpand = "2.0.0"
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glob = "0.3.0"
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glob = "0.3"
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anyhow = "1"
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serde_json = "1.0"
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serde = { version = "1.0", features = ["derive"] }
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jsonrpc-core = "15.1"
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futures-util = "0.3"
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@ -1,19 +1,44 @@
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use std::{
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collections::HashMap,
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process::{ChildStderr, ChildStdin, ChildStdout, Command, Stdio},
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};
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use std::collections::HashMap;
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use jsonrpc_core as jsonrpc;
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use lsp_types as lsp;
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use serde::{Deserialize, Serialize};
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use serde_json::Value;
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use smol::channel::{Receiver, Sender};
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use smol::io::{BufReader, BufWriter};
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use smol::prelude::*;
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use smol::Unblock;
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use smol::process::{Child, ChildStderr, ChildStdin, ChildStdout, Command, Stdio};
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use smol::Executor;
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struct Client {
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// process: Command,
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reader: BufReader<Unblock<ChildStdout>>,
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use futures_util::{select, FutureExt};
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/// A type representing all possible values sent from the server to the client.
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#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
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#[serde(deny_unknown_fields)]
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#[serde(untagged)]
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enum Message {
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/// A regular JSON-RPC request output (single response).
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Output(jsonrpc::Output),
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/// A notification.
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Notification(jsonrpc::Notification),
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/// A JSON-RPC request
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Call(jsonrpc::Call),
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}
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pub struct Client {
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process: Child,
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stderr: BufReader<ChildStderr>,
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outgoing: Sender<Payload>,
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pub request_counter: u64,
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capabilities: Option<lsp::ServerCapabilities>,
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}
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impl Client {
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fn start(cmd: &str, args: &[String]) -> Self {
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pub fn start(ex: &Executor, cmd: &str, args: &[String]) -> Self {
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let mut process = Command::new(cmd)
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.args(args)
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.stdin(Stdio::piped())
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@ -21,51 +46,332 @@ fn start(cmd: &str, args: &[String]) -> Self {
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.stderr(Stdio::piped())
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.spawn()
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.expect("Failed to start language server");
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// TODO: impl drop that kills the process
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// smol makes sure the process is reaped on drop, but using kill_on_drop(true) maybe?
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// TODO: do we need bufreader/writer here? or do we use async wrappers on unblock?
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let writer = BufWriter::new(Unblock::new(
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process.stdin.take().expect("Failed to open stdin"),
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));
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let reader = BufReader::new(Unblock::new(
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process.stdout.take().expect("Failed to open stdout"),
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));
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let stderr = BufReader::new(Unblock::new(
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process.stderr.take().expect("Failed to open stderr"),
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));
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let writer = BufWriter::new(process.stdin.take().expect("Failed to open stdin"));
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let reader = BufReader::new(process.stdout.take().expect("Failed to open stdout"));
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let stderr = BufReader::new(process.stderr.take().expect("Failed to open stderr"));
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Client { reader }
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let (incoming, outgoing) = Transport::start(ex, reader, writer);
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Client {
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process,
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stderr,
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outgoing,
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request_counter: 0,
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capabilities: None,
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}
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}
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async fn receiver(&mut self) -> Result<(), std::io::Error> {
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let mut headers: HashMap<String, String> = HashMap::default();
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loop {
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// read headers
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loop {
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let mut header = String::new();
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// detect pipe closed if 0
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self.reader.read_line(&mut header).await?;
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let header = header.trim();
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fn next_request_id(&mut self) -> jsonrpc::Id {
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let id = jsonrpc::Id::Num(self.request_counter);
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self.request_counter += 1;
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id
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}
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if header.is_empty() {
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break;
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}
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fn to_params(value: Value) -> anyhow::Result<jsonrpc::Params> {
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use jsonrpc::Params;
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let parts: Vec<&str> = header.split(": ").collect();
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if parts.len() != 2 {
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// return Err(Error::new(ErrorKind::Other, "Failed to parse header"));
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panic!()
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}
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headers.insert(parts[0].to_string(), parts[1].to_string());
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}
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let params = match value {
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Value::Null => Params::None,
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Value::Bool(_) | Value::Number(_) | Value::String(_) => Params::Array(vec![value]),
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Value::Array(vec) => Params::Array(vec),
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Value::Object(map) => Params::Map(map),
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};
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// find content-length
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Ok(params)
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}
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// read data
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// decode via serde_json decoding into jsonrpc_core Output
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break;
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}
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pub async fn request<R: lsp::request::Request>(
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&mut self,
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params: R::Params,
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) -> anyhow::Result<R::Result>
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where
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R::Params: serde::Serialize,
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R::Result: core::fmt::Debug, // TODO: temporary
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{
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let params = serde_json::to_value(params)?;
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let request = jsonrpc::MethodCall {
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jsonrpc: Some(jsonrpc::Version::V2),
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id: self.next_request_id(),
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method: R::METHOD.to_string(),
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params: Self::to_params(params)?,
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};
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let (tx, rx) = smol::channel::bounded::<anyhow::Result<Value>>(1);
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self.outgoing
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.send(Payload::Request {
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chan: tx,
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value: request,
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})
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.await?;
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let response = rx.recv().await??;
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let response = serde_json::from_value(response)?;
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// TODO: we should pass request to a sender thread via a channel
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// so it can't be interleaved
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// TODO: responses can be out of order, we need to register a single shot response channel
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Ok(response)
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}
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pub async fn notify<R: lsp::notification::Notification>(
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&mut self,
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params: R::Params,
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) -> anyhow::Result<()>
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where
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R::Params: serde::Serialize,
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{
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let params = serde_json::to_value(params)?;
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let notification = jsonrpc::Notification {
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jsonrpc: Some(jsonrpc::Version::V2),
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method: R::METHOD.to_string(),
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params: Self::to_params(params)?,
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};
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self.outgoing
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.send(Payload::Notification(notification))
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.await?;
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|
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Ok(())
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}
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|
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// -------------------------------------------------------------------------------------------
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// General messages
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// -------------------------------------------------------------------------------------------
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|
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pub async fn initialize(&mut self) -> anyhow::Result<()> {
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// TODO: delay any requests that are triggered prior to initialize
|
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|
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#[allow(deprecated)]
|
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let params = lsp::InitializeParams {
|
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process_id: Some(u64::from(std::process::id())),
|
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root_path: None,
|
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// root_uri: Some(lsp_types::Url::parse("file://localhost/")?),
|
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root_uri: None, // set to project root in the future
|
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initialization_options: None,
|
||||
capabilities: lsp::ClientCapabilities::default(),
|
||||
trace: None,
|
||||
workspace_folders: None,
|
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client_info: None,
|
||||
};
|
||||
|
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let response = self.request::<lsp::request::Initialize>(params).await?;
|
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self.capabilities = Some(response.capabilities);
|
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|
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// next up, notify<initialized>
|
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self.notify::<lsp::notification::Initialized>(lsp::InitializedParams {})
|
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.await?;
|
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|
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Ok(())
|
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}
|
||||
|
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pub async fn shutdown(&mut self) -> anyhow::Result<()> {
|
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self.request::<lsp::request::Shutdown>(()).await
|
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}
|
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|
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pub async fn exit(&mut self) -> anyhow::Result<()> {
|
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self.notify::<lsp::notification::Exit>(()).await
|
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}
|
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|
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// -------------------------------------------------------------------------------------------
|
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// Text document
|
||||
// -------------------------------------------------------------------------------------------
|
||||
|
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pub async fn text_document_did_open(&mut self) -> anyhow::Result<()> {
|
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self.notify::<lsp::notification::DidOpenTextDocument>(lsp::DidOpenTextDocumentParams {
|
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text_document: lsp::TextDocumentItem {
|
||||
uri: lsp::Url::parse(".")?,
|
||||
language_id: "rust".to_string(),
|
||||
version: 0,
|
||||
text: "".to_string(),
|
||||
},
|
||||
})
|
||||
.await
|
||||
}
|
||||
|
||||
pub async fn text_document_did_change(&mut self) -> anyhow::Result<()> {
|
||||
unimplemented!()
|
||||
}
|
||||
|
||||
// will_save / will_save_wait_until
|
||||
|
||||
pub async fn text_document_did_save(&mut self) -> anyhow::Result<()> {
|
||||
unimplemented!()
|
||||
}
|
||||
|
||||
pub async fn text_document_did_close(&mut self) -> anyhow::Result<()> {
|
||||
unimplemented!()
|
||||
}
|
||||
}
|
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|
||||
enum Payload {
|
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Request {
|
||||
chan: Sender<anyhow::Result<Value>>,
|
||||
value: jsonrpc::MethodCall,
|
||||
},
|
||||
Notification(jsonrpc::Notification),
|
||||
}
|
||||
|
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struct Transport {
|
||||
incoming: Sender<Message>,
|
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outgoing: Receiver<Payload>,
|
||||
|
||||
pending_requests: HashMap<jsonrpc::Id, Sender<anyhow::Result<Value>>>,
|
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headers: HashMap<String, String>,
|
||||
|
||||
writer: BufWriter<ChildStdin>,
|
||||
reader: BufReader<ChildStdout>,
|
||||
}
|
||||
|
||||
impl Transport {
|
||||
pub fn start(
|
||||
ex: &Executor,
|
||||
reader: BufReader<ChildStdout>,
|
||||
writer: BufWriter<ChildStdin>,
|
||||
) -> (Receiver<Message>, Sender<Payload>) {
|
||||
let (incoming, rx) = smol::channel::unbounded();
|
||||
let (tx, outgoing) = smol::channel::unbounded();
|
||||
|
||||
let transport = Self {
|
||||
reader,
|
||||
writer,
|
||||
incoming,
|
||||
outgoing,
|
||||
pending_requests: Default::default(),
|
||||
headers: Default::default(),
|
||||
};
|
||||
|
||||
ex.spawn(transport.duplex()).detach();
|
||||
|
||||
(rx, tx)
|
||||
}
|
||||
|
||||
async fn recv(
|
||||
reader: &mut (impl AsyncBufRead + Unpin),
|
||||
headers: &mut HashMap<String, String>,
|
||||
) -> Result<Message, std::io::Error> {
|
||||
// read headers
|
||||
loop {
|
||||
let mut header = String::new();
|
||||
// detect pipe closed if 0
|
||||
reader.read_line(&mut header).await?;
|
||||
let header = header.trim();
|
||||
|
||||
if header.is_empty() {
|
||||
break;
|
||||
}
|
||||
|
||||
let parts: Vec<&str> = header.split(": ").collect();
|
||||
if parts.len() != 2 {
|
||||
// return Err(Error::new(ErrorKind::Other, "Failed to parse header"));
|
||||
panic!()
|
||||
}
|
||||
headers.insert(parts[0].to_string(), parts[1].to_string());
|
||||
}
|
||||
|
||||
// find content-length
|
||||
let content_length = headers.get("Content-Length").unwrap().parse().unwrap();
|
||||
|
||||
let mut content = vec![0; content_length];
|
||||
reader.read_exact(&mut content).await?;
|
||||
let msg = String::from_utf8(content).unwrap();
|
||||
|
||||
// read data
|
||||
|
||||
// try parsing as output (server response) or call (server request)
|
||||
let output: serde_json::Result<Message> = serde_json::from_str(&msg);
|
||||
|
||||
Ok(output?)
|
||||
}
|
||||
|
||||
pub async fn send_payload(&mut self, payload: Payload) -> anyhow::Result<()> {
|
||||
match payload {
|
||||
Payload::Request { chan, value } => {
|
||||
self.pending_requests.insert(value.id.clone(), chan);
|
||||
|
||||
let json = serde_json::to_string(&value)?;
|
||||
self.send(json).await
|
||||
}
|
||||
Payload::Notification(value) => {
|
||||
let json = serde_json::to_string(&value)?;
|
||||
self.send(json).await
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
pub async fn send(&mut self, request: String) -> anyhow::Result<()> {
|
||||
println!("-> {}", request);
|
||||
|
||||
// send the headers
|
||||
self.writer
|
||||
.write_all(format!("Content-Length: {}\r\n\r\n", request.len()).as_bytes())
|
||||
.await?;
|
||||
|
||||
// send the body
|
||||
self.writer.write_all(request.as_bytes()).await?;
|
||||
|
||||
self.writer.flush().await?;
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
pub async fn recv_response(&mut self, output: jsonrpc::Output) -> anyhow::Result<()> {
|
||||
match output {
|
||||
jsonrpc::Output::Success(jsonrpc::Success { id, result, .. }) => {
|
||||
println!("<- {}", result);
|
||||
|
||||
let tx = self
|
||||
.pending_requests
|
||||
.remove(&id)
|
||||
.expect("pending_request with id not found!");
|
||||
tx.send(Ok(result)).await?;
|
||||
}
|
||||
jsonrpc::Output::Failure(_) => panic!("recv fail"),
|
||||
msg => unimplemented!("{:?}", msg),
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
|
||||
pub async fn duplex(mut self) {
|
||||
loop {
|
||||
select! {
|
||||
// client -> server
|
||||
msg = self.outgoing.next().fuse() => {
|
||||
if msg.is_none() {
|
||||
break;
|
||||
}
|
||||
let msg = msg.unwrap();
|
||||
|
||||
self.send_payload(msg).await.unwrap();
|
||||
}
|
||||
// server <- client
|
||||
msg = Self::recv(&mut self.reader, &mut self.headers).fuse() => {
|
||||
if msg.is_err() {
|
||||
break;
|
||||
}
|
||||
let msg = msg.unwrap();
|
||||
|
||||
match msg {
|
||||
Message::Output(output) => self.recv_response(output).await.unwrap(),
|
||||
Message::Notification(_) => {
|
||||
// dispatch
|
||||
}
|
||||
Message::Call(_) => {
|
||||
// dispatch
|
||||
}
|
||||
};
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
@ -14,6 +14,7 @@ path = "src/main.rs"
|
||||
[dependencies]
|
||||
helix-core = { path = "../helix-core" }
|
||||
helix-view = { path = "../helix-view", features = ["term"]}
|
||||
helix-lsp = { path = "../helix-lsp"}
|
||||
|
||||
anyhow = "1"
|
||||
|
||||
|
@ -26,9 +26,14 @@ fn main() -> Result<(), Error> {
|
||||
std::thread::spawn(move || smol::block_on(EX.run(smol::future::pending::<()>())));
|
||||
}
|
||||
|
||||
smol::block_on(EX.run(async {
|
||||
Application::new(args).unwrap().run().await;
|
||||
}));
|
||||
let mut lsp = helix_lsp::Client::start(&EX, "rust-analyzer", &[]);
|
||||
|
||||
smol::block_on(async {
|
||||
let res = lsp.initialize().await;
|
||||
// Application::new(args).unwrap().run().await;
|
||||
|
||||
loop {}
|
||||
});
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
Loading…
Reference in New Issue
Block a user