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Better error messages while deserializing

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This commit is contained in:
Aleksey Kladov 2020-02-11 09:46:45 +01:00
parent f8d6d6f23b
commit 44425eaebc
3 changed files with 17 additions and 11 deletions
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8
crates/ra_lsp_server/src/lib.rs
View File

@ -31,6 +31,8 @@ mod config;
mod world;
mod diagnostics;
use serde::de::DeserializeOwned;
pub type Result<T> = std::result::Result<T, Box<dyn std::error::Error + Send + Sync>>;
pub use crate::{
caps::server_capabilities,
@ -38,3 +40,9 @@ pub use crate::{
main_loop::LspError,
main_loop::{main_loop, show_message},
};
pub fn from_json<T: DeserializeOwned>(what: &'static str, json: serde_json::Value) -> Result<T> {
let res = T::deserialize(&json)
.map_err(|e| format!("Failed to deserialize {}: {}; {}", what, e, json))?;
Ok(res)
}

17
crates/ra_lsp_server/src/main.rs
View File

@ -1,7 +1,7 @@
//! `ra_lsp_server` binary
use lsp_server::Connection;
use ra_lsp_server::{show_message, Result, ServerConfig};
use ra_lsp_server::{from_json, show_message, Result, ServerConfig};
use ra_prof;
fn main() -> Result<()> {
@ -45,7 +45,8 @@ fn run_server() -> Result<()> {
let server_capabilities = serde_json::to_value(ra_lsp_server::server_capabilities()).unwrap();
let initialize_params = connection.initialize(server_capabilities)?;
let initialize_params: lsp_types::InitializeParams = serde_json::from_value(initialize_params)?;
let initialize_params =
from_json::<lsp_types::InitializeParams>("InitializeParams", initialize_params)?;
if let Some(client_info) = initialize_params.client_info {
log::info!("Client '{}' {}", client_info.name, client_info.version.unwrap_or_default());
@ -62,17 +63,13 @@ fn run_server() -> Result<()> {
.filter(|workspaces| !workspaces.is_empty())
.unwrap_or_else(|| vec![root]);
let server_config: ServerConfig = initialize_params
let server_config = initialize_params
.initialization_options
.and_then(|v| {
serde_json::from_value(v)
from_json::<ServerConfig>("config", v)
.map_err(|e| {
log::error!("failed to deserialize config: {}", e);
show_message(
lsp_types::MessageType::Error,
format!("failed to deserialize config: {}", e),
&connection.sender,
);
log::error!("{}", e);
show_message(lsp_types::MessageType::Error, e.to_string(), &connection.sender);
})
.ok()
})

3
crates/ra_lsp_server/src/main_loop/handlers.rs
View File

@ -35,6 +35,7 @@ use crate::{
TryConvWithToVec,
},
diagnostics::DiagnosticTask,
from_json,
req::{self, Decoration, InlayHint, InlayHintsParams, InlayKind},
world::WorldSnapshot,
LspError, Result,
@ -811,7 +812,7 @@ enum CodeLensResolveData {
pub fn handle_code_lens_resolve(world: WorldSnapshot, code_lens: CodeLens) -> Result<CodeLens> {
let _p = profile("handle_code_lens_resolve");
let data = code_lens.data.unwrap();
let resolve = serde_json::from_value(data)?;
let resolve = from_json::<Option<CodeLensResolveData>>("CodeLensResolveData", data)?;
match resolve {
Some(CodeLensResolveData::Impls(lens_params)) => {
let locations: Vec<Location> =