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Rust Cargo linter: Improve workspace support (#1679)

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* Rust Cargo linter: Improve workspace support

When using Cargo workspaces [1], there is a 'Cargo.toml' directory in a
top level directory, listing all the crates in the project. If we are
currently editing one of the crates, 'cargo build' should execute in
that directory for that crate's separate `Cargo.toml`, otherwise Cargo
may spend more time possibly rebuilding the entire workspace, and maybe
failing on one of the other crates, instead of succeeding on the current.

[1] https://doc.rust-lang.org/book/second-edition/ch14-03-cargo-workspaces.html
This commit is contained in:
Dan Aloni
2018-06-28 00:36:02 +03:00
committed by w0rp
parent 980aa35566
commit d9e139ae23
5 changed files with 46 additions and 1 deletions
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ale_linters/rust/cargo.vim
+14 -1
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@@ -6,6 +6,7 @@ call ale#Set('rust_cargo_use_check', 1)
call ale#Set('rust_cargo_check_all_targets', 0)
call ale#Set('rust_cargo_check_examples', 0)
call ale#Set('rust_cargo_check_tests', 0)
call ale#Set('rust_cargo_avoid_whole_workspace', 1)
call ale#Set('rust_cargo_default_feature_behavior', 'default')
call ale#Set('rust_cargo_include_features', '')
@@ -45,6 +46,18 @@ function! ale_linters#rust#cargo#GetCommand(buffer, version_output) abort
let l:include_features = ' --features ' . ale#Escape(l:include_features)
endif
let l:avoid_whole_workspace = ale#Var(a:buffer, 'rust_cargo_avoid_whole_workspace')
let l:nearest_cargo_prefix = ''
if l:avoid_whole_workspace
let l:nearest_cargo = ale#path#FindNearestFile(a:buffer, 'Cargo.toml')
let l:nearest_cargo_dir = fnamemodify(l:nearest_cargo, ':h')
if l:nearest_cargo_dir isnot# '.'
let l:nearest_cargo_prefix = 'cd '. ale#Escape(l:nearest_cargo_dir) .' && '
endif
endif
let l:default_feature_behavior = ale#Var(a:buffer, 'rust_cargo_default_feature_behavior')
if l:default_feature_behavior is# 'all'
let l:include_features = ''
@@ -55,7 +68,7 @@ function! ale_linters#rust#cargo#GetCommand(buffer, version_output) abort
let l:default_feature = ''
endif
return 'cargo '
return l:nearest_cargo_prefix . 'cargo '
\ . (l:use_check ? 'check' : 'build')
\ . (l:use_all_targets ? ' --all-targets' : '')
\ . (l:use_examples ? ' --examples' : '')