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Make code more understandable

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Avoid mutation of snapshot's config -- that's spooky action at a
distance. Instead, copy it over to a local variable.

This points out a minor architecture problem, which we won't fix right
away.

Various `ide`-level config structs, like `AssistConfig`, are geared
towards one-shot use when calling a specific methods. On the other
hand, the large `Config` struct in `rust-analyzer` is a long-term
config store.

The fact that `Config` stores `AssistConfig` is accidental -- a better
design would probably be to just store `ConfigData` inside `Config`
and create various `Config`s on the fly out of it.
This commit is contained in:
Aleksey Kladov 2020-12-23 13:16:24 +03:00
parent e1aca75974
commit 3ced546033
1 changed files with 13 additions and 9 deletions
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22
crates/rust-analyzer/src/handlers.rs
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@ -8,8 +8,9 @@ use std::{
};
use ide::{
CompletionResolveCapability, FileId, FilePosition, FileRange, HoverAction, HoverGotoTypeData,
NavigationTarget, Query, RangeInfo, Runnable, RunnableKind, SearchScope, SymbolKind, TextEdit,
AssistConfig, CompletionResolveCapability, FileId, FilePosition, FileRange, HoverAction,
HoverGotoTypeData, NavigationTarget, Query, RangeInfo, Runnable, RunnableKind, SearchScope,
SymbolKind, TextEdit,
};
use itertools::Itertools;
use lsp_server::ErrorCode;
@ -882,11 +883,14 @@ pub(crate) fn handle_code_action(
let range = from_proto::text_range(&line_index, params.range);
let frange = FileRange { file_id, range };
snap.config.assist.allowed = params
.clone()
.context
.only
.map(|it| it.into_iter().filter_map(from_proto::assist_kind).collect());
let assists_config = AssistConfig {
allowed: params
.clone()
.context
.only
.map(|it| it.into_iter().filter_map(from_proto::assist_kind).collect()),
..snap.config.assist
};
let mut res: Vec<lsp_ext::CodeAction> = Vec::new();
@ -894,12 +898,12 @@ pub(crate) fn handle_code_action(
if snap.config.client_caps.code_action_resolve {
for (index, assist) in
snap.analysis.unresolved_assists(&snap.config.assist, frange)?.into_iter().enumerate()
snap.analysis.unresolved_assists(&assists_config, frange)?.into_iter().enumerate()
{
res.push(to_proto::unresolved_code_action(&snap, params.clone(), assist, index)?);
}
} else {
for assist in snap.analysis.resolved_assists(&snap.config.assist, frange)?.into_iter() {
for assist in snap.analysis.resolved_assists(&assists_config, frange)?.into_iter() {
res.push(to_proto::resolved_code_action(&snap, assist)?);
}
}