2022-03-28
Rust Analyzer Options
type: ['null', 'string'] Custom
cargo runner extension ID.
anyOf:
{'type': 'null'}
{'type': 'array', 'items': {'type': 'object', 'properties': {'mask': {'type': 'string', 'description': 'Runnable name mask'}, 'env': {'type': 'object', 'description': 'Variables in form of { "key": "value"}'}}}}
{'type': 'object', 'description': 'Variables in form of { "key": "value"}'}Environment variables passed to the runnable launched using
Test or Debug lens or
rust-analyzer.run command.
type: boolean
default: True Whether to show inlay
hints.
type: ['null', 'string'] Path to
rust-analyzer executable (points to bundled binary by default).
| key | value |
|---|---|
| scope | machine-overridable |
type: ['null', 'object'] Extra
environment variables that will be passed to the rust-analyzer
executable. Useful for passing e.g. RA_LOG for
debugging.
type: string
default: off Trace requests to the
rust-analyzer (this is usually overly verbose and not recommended for
regular users).
| value | description |
|---|---|
| off | No traces |
| messages | Error only |
| verbose | Full log |
| key | value |
|---|---|
| scope | window |
type: boolean
default: False Enable logging of VS
Code extensions itself.
type: string
default: auto Preferred debug
engine.
| value | description |
|---|---|
| auto | First try to use CodeLLDB, if it’s not installed try to use MS C++ tools. |
| vadimcn.vscode-lldb | Use CodeLLDB |
| ms-vscode.cpptools | Use MS C++ tools |
type: ['object', 'string']
default:
{
"/rustc/<id>": "${env:USERPROFILE}/.rustup/toolchains/<toolchain-id>/lib/rustlib/src/rust"
}Optional source file mappings passed to the debug engine.
| key | value |
|---|---|
| const | auto |
type: boolean
default: False Whether to open up the
Debug Panel on debugging start.
type: object
default: {} Optional settings passed
to the debug engine. Example:
{ "lldb": { "terminal":"external"} }
type: string
default: todo Placeholder for missing
expressions in assists.
| value | description |
|---|---|
| todo | Fill missing expressions with the
todo macro |
| default | Fill missing expressions with reasonable
defaults, new or default constructors. |
type: string
default: crate How imports should be
grouped into use statements.
| value | description |
|---|---|
| preserve | Do not change the granularity of any imports and preserve the original structure written by the developer. |
| crate | Merge imports from the same crate into a single use statement. Conversely, imports from different crates are split into separate statements. |
| module | Merge imports from the same module into a single use statement. Conversely, imports from different modules are split into separate statements. |
| item | Flatten imports so that each has its own use statement. |
type: boolean
default: False Whether to enforce the
import granularity setting for all files. If set to false rust-analyzer
will try to keep import styles consistent per file.
type: string
default: plain The path structure for
newly inserted paths to use.
| value | description |
|---|---|
| plain | Insert import paths relative to the
current module, using up to one super prefix if the parent
module contains the requested item. |
| self | Insert import paths relative to the
current module, using up to one super prefix if the parent
module contains the requested item. Prefixes self in front
of the path if it starts with a module. |
| crate | Force import paths to be absolute by
always starting them with crate or the extern crate name
they come from. |
type: boolean
default: True Group inserted imports
by the following
order. Groups are separated by newlines.
type: boolean
default: True Whether to allow import
insertion to merge new imports into single path glob imports like
use std::fmt::*;.
type: boolean
default: True Warm up caches on
project load.
type: boolean
default: True Show function name and
docs in parameter hints.
type: boolean
default: True Automatically refresh
project info via cargo metadata on Cargo.toml
changes.
type: boolean
default: False Activate all available
features (--all-features).
type: array
default: ['core'] Unsets
#[cfg(test)] for the specified crates.
| key | value |
|---|---|
| items | {‘type’: ‘string’} |
type: array
default: [] List of features to
activate.
| key | value |
|---|---|
| items | {‘type’: ‘string’} |
type: boolean
default: True Run build scripts
(build.rs) for more precise code analysis.
type: boolean
default: True Use
RUSTC_WRAPPER=rust-analyzer when running build scripts to
avoid compiling unnecessary things.
type: boolean
default: False Do not activate the
default feature.
type: ['null', 'string']
Compilation target (target triple).
type: boolean
default: False Internal config for
debugging, disables loading of sysroot crates.
type: boolean
default: True Run specified
cargo check command for diagnostics on save.
type: ['null', 'boolean'] Check
with all features (--all-features). Defaults to
#rust-analyzer.cargo.allFeatures#.
type: boolean
default: True Check all targets and
tests (--all-targets).
type: string
default: check Cargo command to use
for cargo check.
type: ['null', 'boolean'] Do not
activate the default feature.
type: ['null', 'string'] Check for
a specific target. Defaults to
#rust-analyzer.cargo.target#.
type: array
default: [] Extra arguments for
cargo check.
| key | value |
|---|---|
| items | {‘type’: ‘string’} |
type: ['null', 'array'] List of
features to activate. Defaults to
#rust-analyzer.cargo.features#.
| key | value |
|---|---|
| items | {‘type’: ‘string’} |
type: ['null', 'array'] Advanced
option, fully override the command rust-analyzer uses for checking. The
command should include --message-format=json or similar
option.
| key | value |
|---|---|
| items | {‘type’: ‘string’} |
type: boolean
default: True Whether to add argument
snippets when completing functions. Only applies when
#rust-analyzer.completion.addCallParenthesis# is set.
type: boolean
default: True Whether to add
parenthesis when completing functions.
type: object
default:
{
"Arc::new": {
"postfix": "arc",
"body": "Arc::new(${receiver})",
"requires": "std::sync::Arc",
"description": "Put the expression into an `Arc`",
"scope": "expr"
},
"Rc::new": {
"postfix": "rc",
"body": "Rc::new(${receiver})",
"requires": "std::rc::Rc",
"description": "Put the expression into an `Rc`",
"scope": "expr"
},
"Box::pin": {
"postfix": "pinbox",
"body": "Box::pin(${receiver})",
"requires": "std::boxed::Box",
"description": "Put the expression into a pinned `Box`",
"scope": "expr"
},
"Ok": {
"postfix": "ok",
"body": "Ok(${receiver})",
"description": "Wrap the expression in a `Result::Ok`",
"scope": "expr"
},
"Err": {
"postfix": "err",
"body": "Err(${receiver})",
"description": "Wrap the expression in a `Result::Err`",
"scope": "expr"
},
"Some": {
"postfix": "some",
"body": "Some(${receiver})",
"description": "Wrap the expression in an `Option::Some`",
"scope": "expr"
}
}Custom completion snippets.
type: boolean
default: True Whether to show postfix
snippets like dbg, if, not,
etc.
type: boolean
default: True Toggles the additional
completions that automatically add imports when completed. Note that
your client must specify the additionalTextEdits LSP client
capability to truly have this feature enabled.
type: boolean
default: True Toggles the additional
completions that automatically show method calls and field accesses with
self prefixed to them when inside a method.
type: boolean
default: False Enables completions of
private items and fields that are defined in the current workspace even
if they are not visible at the current position.
type: boolean
default: True Whether to show native
rust-analyzer diagnostics.
type: boolean
default: False Whether to show
experimental rust-analyzer diagnostics that might have more false
positives than usual.
type: array
default: [] List of rust-analyzer
diagnostics to disable.
| key | value |
|---|---|
| items | {‘type’: ‘string’} |
| uniqueItems | True |
type: object
default: {} Map of prefixes to be
substituted when parsing diagnostic file paths. This should be the
reverse mapping of what is passed to rustc as
--remap-path-prefix.
type: array
default: [] List of warnings that
should be displayed with hint severity.
The warnings will be indicated by faded text or three dots in code
and will not show up in the Problems Panel.
| key | value |
|---|---|
| items | {‘type’: ‘string’} |
type: array
default: [] List of warnings that
should be displayed with info severity.
The warnings will be indicated by a blue squiggly underline in code
and a blue icon in the Problems Panel.
| key | value |
|---|---|
| items | {‘type’: ‘string’} |
type: boolean
default: True Expand attribute
macros.
type: string
default: client Controls file
watching implementation.
type: array
default: [] These directories will be
ignored by rust-analyzer. They are relative to the workspace root, and
globs are not supported. You may also need to add the folders to Code’s
files.watcherExclude.
| key | value |
|---|---|
| items | {‘type’: ‘string’} |
type: boolean
default: True Enables highlighting of
related references while hovering your mouse above any identifier.
type: boolean
default: True Enables highlighting of
all exit points while hovering your mouse above any return,
?, or return type arrow (->).
type: boolean
default: True Enables highlighting of
related references while hovering your mouse break,
loop, while, or for keywords.
type: boolean
default: True Enables highlighting of
all break points for a loop or block context while hovering your mouse
above any async or await keywords.
type: boolean
default: True Use semantic tokens for
strings.
In some editors (e.g. vscode) semantic tokens override other highlighting grammars. By disabling semantic tokens for strings, other grammars can be used to highlight their contents.
type: boolean
default: True Whether to show
documentation on hover.
type: boolean
default: True Use markdown syntax for
links in hover.
type: boolean
default: True Whether to show
Debug action. Only applies when
#rust-analyzer.hoverActions.enable# is set.
type: boolean
default: True Whether to show
HoverActions in Rust files.
type: boolean
default: True Whether to show
Go to Type Definition action. Only applies when
#rust-analyzer.hoverActions.enable# is set.
type: boolean
default: True Whether to show
Implementations action. Only applies when
#rust-analyzer.hoverActions.enable# is set.
type: boolean
default: False Whether to show
References action. Only applies when
#rust-analyzer.hoverActions.enable# is set.
type: boolean
default: True Whether to show
Run action. Only applies when
#rust-analyzer.hoverActions.enable# is set.
type: boolean
default: True Whether to render
trailing colons for parameter hints, and trailing colons for parameter
hints.
type: ['null', 'integer']
default: 25 minimum:
0 Maximum length for inlay hints. Set to null to have
an unlimited length.
type: boolean
default: True Whether to show
function parameter name inlay hints at the call site.
type: boolean
default: True Whether to show inlay
type hints for variables.
type: boolean
default: True Whether to show inlay
type hints for method chains.
type: boolean
default: False Whether to show inlay
type hints for return types of closures with blocks.
type: boolean
default: False Whether to show inlay
type hints for compiler inserted reborrows.
type: string
default: never Whether to show inlay
type hints for elided lifetimes in function signatures.
| value | description |
|---|---|
| always | Always show lifetime elision hints. |
| never | Never show lifetime elision hints. |
| skip_trivial | Only show lifetime elision hints if a return type is involved. |
type: boolean
default: False Whether to prefer
using parameter names as the name for elided lifetime hints if
possible.
type: boolean
default: False Whether to hide inlay
hints for constructors.
type: boolean
default: True Join lines inserts else
between consecutive ifs.
type: boolean
default: True Join lines removes
trailing commas.
type: boolean
default: True Join lines unwraps
trivial blocks.
type: boolean
default: True Join lines merges
consecutive declaration and initialization of an assignment.
type: boolean
default: True Whether to show
Debug lens. Only applies when
#rust-analyzer.lens.enable# is set.
type: boolean
default: True Whether to show
CodeLens in Rust files.
type: boolean
default: True Whether to show
Implementations lens. Only applies when
#rust-analyzer.lens.enable# is set.
type: boolean
default: True Whether to show
Run lens. Only applies when
#rust-analyzer.lens.enable# is set.
type: boolean
default: False Whether to show
Method References lens. Only applies when
#rust-analyzer.lens.enable# is set.
type: boolean
default: False Whether to show
References lens for Struct, Enum, Union and Trait. Only
applies when #rust-analyzer.lens.enable# is set.
type: boolean
default: False Whether to show
References lens for Enum Variants. Only applies when
#rust-analyzer.lens.enable# is set.
type: boolean
default: True Internal config: use
custom client-side commands even when the client doesn’t set the
corresponding capability.
type: array
default: [] Disable project
auto-discovery in favor of explicitly specified set of projects.
Elements must be paths pointing to Cargo.toml,
rust-project.json, or JSON objects in
rust-project.json format.
| key | value |
|---|---|
| items | {‘type’: [‘string’, ‘object’]} |
type: ['null', 'integer']
minimum: 0 Number of syntax trees
rust-analyzer keeps in memory. Defaults to 128.
type: boolean
default: True Whether to show
can't find Cargo.toml error message.
type: number
default: 0 minimum:
0 maximum: 255 How
many worker threads to to handle priming caches. The default
0 means to pick automatically.
type: boolean
default: True Enable support for
procedural macros, implies
#rust-analyzer.cargo.runBuildScripts#.
type: ['null', 'string'] Internal
config, path to proc-macro server executable (typically, this is
rust-analyzer itself, but we override this in tests).
type: object
default: {} These proc-macros will be
ignored when trying to expand them.
This config takes a map of crate names with the exported proc-macro names to ignore as values.
type: ['null', 'string'] Command
to be executed instead of ‘cargo’ for runnables.
type: array
default: [] Additional arguments to
be passed to cargo for runnables such as tests or binaries. For example,
it may be --release.
| key | value |
|---|---|
| items | {‘type’: ‘string’} |
type: ['null', 'string'] Path to
the Cargo.toml of the rust compiler workspace, for usage in
rustc_private projects, or “discover” to try to automatically find it if
the rustc-dev component is installed.
Any project which uses rust-analyzer with the rustcPrivate crates
must set
[package.metadata.rust-analyzer] rustc_private=true to use
it.
This option does not take effect until rust-analyzer is restarted.
type: array
default: [] Additional arguments to
rustfmt.
| key | value |
|---|---|
| items | {‘type’: ‘string’} |
type: ['null', 'array'] Advanced
option, fully override the command rust-analyzer uses for
formatting.
| key | value |
|---|---|
| items | {‘type’: ‘string’} |
type: boolean
default: False Enables the use of
rustfmt’s unstable range formatting command for the
textDocument/rangeFormatting request. The rustfmt option is
unstable and only available on a nightly build.
type: string
default: workspace Workspace symbol
search scope.
| value | description |
|---|---|
| workspace | Search in current workspace only |
| workspace_and_dependencies | Search in current workspace and dependencies |
type: string
default: only_types Workspace symbol
search kind.
| value | description |
|---|---|
| only_types | Search for types only |
| all_symbols | Search for all symbols kinds |