ide crate provides “ide-centric” APIs for the rust-analyzer. That is, it generally operates with files and text ranges, and returns results as Strings, suitable for displaying to the human.
What powers this API are the
RootDatabase struct, which defines a
database, and the
hir crate, where majority of the analysis happens.
However, IDE specific bits of the analysis (most notably completion) happen
in this crate.
Analysis is a snapshot of a world state at a moment in time. It is the main
entry point for asking semantic information about the world. When the world
state is advanced using
AnalysisHost::apply_change method, all existing
Analysis are canceled (most method return
AnalysisHost stores the current state of the world.
Unique identifier of the assist, should not be shown to the user directly.
Contains information about a call site. Specifically the
FunctionSignatureand current parameter.
A panic payload indicating that a salsa revision was cancelled.
Encapsulate a bunch of raw
.set calls on the database.
CompletionItem describes a single completion variant in the editor pop-up.
It is basically a POD with various properties. To construct a
new method and the
CrateGraph is a bit of information which turns a set of text files into a
number of Rust crates.
Contains the results when hovering over an item
An extra import to add after the completion is applied.
InsertDelete – a single “atomic” change to text
A type to specify UI label, like an entry in the list of assists. Enforces proper casing:
NavigationTarget represents an element in the editor’s UI which you can
click on to navigate to a particular piece of code.
We’re indexing many crates.
Info associated with a text range.
search_scope returns files that might contain references for the element.
pub(crate) things it’s a crate, for
pub things it’s a crate and dependant crates.
In some cases, the location of the references is known to within a
e.g. for things like local variables.
Primary API to get semantic information, like types, from syntax trees.
AssistId data of a certain assist to resolve.
The original id object cannot be used due to a
and the requirement to construct this struct dynamically during the resolve handling.
A user supplied snippet.
Files are grouped into source roots. A source root is a directory on the file systems which is watched for changes. Typically it corresponds to a Rust crate. Source roots might be nested: in this case, a file belongs to the nearest enclosing source root. Paths to files are always relative to a source root, and the analyzer does not know the root path of the source root at all. So, a file from one source root can’t refer to a file in another source root by path.
A static representation of fully analyzed source code.
A measure of text length. Also, equivalently, an index into text.
A way to control how many asssist to resolve during the assist resolution. When an assist is resolved, its edits are calculated that might be costly to always do by default.
The type of the completion item.
A snippet scope describing where a snippet may apply to. These may differ slightly in meaning depending on the snippet trigger.