main.md

Legacy Mode Main Page

This page describes what Legacy Mode is.

It is how the extension worked before the Rust Language Server Mode had been added.

Description

The extension supports the following features for this mode:

• Formatting the active document
• Executing one of the built-in Cargo commands and showing diagnostics (warnings, errors, etc.)
• Navigating to a symbol

Required Tools

Legacy Mode requires the following tools to function:

• racer
• rustfmt
• rustsym

If any of the tools are not found, the extension will offer to install them. A "Rust Tools Missing" item in the status bar will also appear; click on the item to install the missing tools.

Configuration

The extension supports configuration of the tools:

• Racer Configuration
• Rustfmt Configuration
• Rustsym Configuration

You may also configure Legacy Mode via configuration parameters.

Configuration Parameters

Show Output

The "rust.showOutput" configuration parameter controls whether the output channel should be shown when a Cargo command starts executing.

The possible values:

• true - the output channel should be shown
• false - the output channel shouldn't be shown

The output channel will not be shown under any of the following conditions:

• "rust.executeCargoCommandInTerminal" is set to true
• "rust.actionOnSave" is set to "check"