The AST tree

The AST Tree is a linked list of strongly typed nodes. Each node is a Symbol<T> where T is a type implementing AstSymbol.

When using one of the #seq, or #choice macros, auto_lsp will generate two types of symbols:

• The symbol itself with thread safe fields
• The builder associated with the symbol

For example a struct named Module with an optional Function field:

use auto_lsp::core::seq;

#[seq(query = "module")]
struct Module {
    function: Option<Function>,
}

#[seq(query = "function")]
struct Function {}

This would generate:

#[derive(Clone)]
pub struct Module {
    pub function: Option<Symbol<Function>>,
}

#[derive(Clone)]
pub struct ModuleBuilder {
    function: MaybePendingSymbol,
}