Generate features docs from source

3 files changed, 101 insertions, 54 deletions

diff --git a/docs/user/features.md b/docs/user/features.md
index 12ecdec13..4d9402252 100644
--- a/docs/user/features.md
+++ b/docs/user/features.md
@@ -2,58 +2,6 @@ This document is an index of features that the rust-analyzer language server
 provides. Shortcuts are for the default VS Code layout. If there's no shortcut,
 you can use <kbd>Ctrl+Shift+P</kbd> to search for the corresponding action.
 
-### Workspace Symbol <kbd>ctrl+t</kbd>
-
-Uses fuzzy-search to find types, modules and functions by name across your
-project and dependencies. This is **the** most useful feature, which improves code
-navigation tremendously. It mostly works on top of the built-in LSP
-functionality, however `#` and `*` symbols can be used to narrow down the
-search. Specifically,
-
-- `Foo` searches for `Foo` type in the current workspace
-- `foo#` searches for `foo` function in the current workspace
-- `Foo*` searches for `Foo` type among dependencies, including `stdlib`
-- `foo#*` searches for `foo` function among dependencies
-
-That is, `#` switches from "types" to all symbols, `*` switches from the current
-workspace to dependencies.
-
-### Document Symbol <kbd>ctrl+shift+o</kbd>
-
-Provides a tree of the symbols defined in the file. Can be used to
-
-* fuzzy search symbol in a file (super useful)
-* draw breadcrumbs to describe the context around the cursor
-* draw outline of the file
-
-### On Typing Assists
-
-Some features trigger on typing certain characters:
-
-- typing `let =` tries to smartly add `;` if `=` is followed by an existing expression
-- Enter inside comments automatically inserts `///`
-- typing `.` in a chain method call auto-indents
-
-### Extend Selection
-
-Extends the current selection to the encompassing syntactic construct
-(expression, statement, item, module, etc). It works with multiple cursors. This
-is a relatively new feature of LSP:
-https://github.com/Microsoft/language-server-protocol/issues/613, check your
-editor's LSP library to see if this feature is supported.
-
-### Go to Definition
-
-Navigates to the definition of an identifier.
-
-### Go to Implementation
-
-Navigates to the impl block of structs, enums or traits. Also implemented as a code lens.
-
-### Go to Type Defintion
-
-Navigates to the type of an identifier.
-
 ### Commands <kbd>ctrl+shift+p</kbd>
 
 #### Run
diff --git a/docs/user/generated_features.adoc b/docs/user/generated_features.adoc
new file mode 100644
index 000000000..e1eb5d88a
--- /dev/null
+++ b/docs/user/generated_features.adoc
@@ -0,0 +1,98 @@
+=== Extend Selection
+**Source:** https://github.com/rust-analyzer/rust-analyzer/blob/master/crates/ra_ide/src/extend_selection.rs[extend_selection.rs]
+
+
+Extends the current selection to the encompassing syntactic construct
+(expression, statement, item, module, etc). It works with multiple cursors.
+
+|===
+| Editor  | Shortcut
+
+| VS Code | kbd:[Ctrl+Shift+→]
+|===
+
+
+=== File Structure
+**Source:** https://github.com/rust-analyzer/rust-analyzer/blob/master/crates/ra_ide/src/display/structure.rs[structure.rs]
+
+
+Provides a tree of the symbols defined in the file. Can be used to
+
+* fuzzy search symbol in a file (super useful)
+* draw breadcrumbs to describe the context around the cursor
+* draw outline of the file
+
+|===
+| Editor  | Shortcut
+
+| VS Code | kbd:[Ctrl+Shift+O]
+|===
+
+
+=== Go To Definition
+**Source:** https://github.com/rust-analyzer/rust-analyzer/blob/master/crates/ra_ide/src/goto_definition.rs[goto_definition.rs]
+
+
+Navigates to the definition of an identifier.
+
+|===
+| Editor  | Shortcut
+
+| VS Code | kbd:[F12]
+|===
+
+
+=== Go To Implementation
+**Source:** https://github.com/rust-analyzer/rust-analyzer/blob/master/crates/ra_ide/src/goto_implementation.rs[goto_implementation.rs]
+
+
+Navigates to the impl block of structs, enums or traits. Also implemented as a code lens.
+
+|===
+| Editor  | Shortcut
+
+| VS Code | kbd:[Ctrl+F12]
+|===
+
+
+=== Go To Type Definition
+**Source:** https://github.com/rust-analyzer/rust-analyzer/blob/master/crates/ra_ide/src/goto_type_definition.rs[goto_type_definition.rs]
+
+
+Navigates to the type of an identifier.
+
+
+=== On Typing Assists
+**Source:** https://github.com/rust-analyzer/rust-analyzer/blob/master/crates/ra_ide/src/typing.rs[typing.rs]
+
+
+Some features trigger on typing certain characters:
+
+- typing `let =` tries to smartly add `;` if `=` is followed by an existing expression
+- Enter inside comments automatically inserts `///`
+- typing `.` in a chain method call auto-indents
+
+
+=== Workspace Symbol
+**Source:** https://github.com/rust-analyzer/rust-analyzer/blob/master/crates/ra_ide_db/src/symbol_index.rs[symbol_index.rs]
+
+
+Uses fuzzy-search to find types, modules and functions by name across your
+project and dependencies. This is **the** most useful feature, which improves code
+navigation tremendously. It mostly works on top of the built-in LSP
+functionality, however `#` and `*` symbols can be used to narrow down the
+search. Specifically,
+
+- `Foo` searches for `Foo` type in the current workspace
+- `foo#` searches for `foo` function in the current workspace
+- `Foo*` searches for `Foo` type among dependencies, including `stdlib`
+- `foo#*` searches for `foo` function among dependencies
+
+That is, `#` switches from "types" to all symbols, `*` switches from the current
+workspace to dependencies.
+
+|===
+| Editor  | Shortcut
+
+| VS Code | kbd:[Ctrl+T]
+|===
diff --git a/docs/user/readme.adoc b/docs/user/readme.adoc
index 64bd0feb1..7b159bfc6 100644
--- a/docs/user/readme.adoc
+++ b/docs/user/readme.adoc
@@ -8,6 +8,7 @@
 :important-caption: :heavy_exclamation_mark:
 :caution-caption: :fire:
 :warning-caption: :warning:
+:experimental:
 
 // Master copy of this document lives in the https://github.com/rust-analyzer/rust-analyzer repository
 
@@ -268,6 +269,6 @@ Gnome Builder currently has support for RLS, and there's no way to configure the
 1. Rename, symlink or copy the `rust-analyzer` binary to `rls` and place it somewhere Builder can find (in `PATH`, or under `~/.cargo/bin`).
 2. Enable the Rust Builder plugin.
 
-== Usage
+== Features
 
-See https://github.com/rust-analyzer/rust-analyzer/blob/master/docs/user/features.md[features.md].
+include::./generated_features.adoc[]