Function rslint_parser::parse_text

pub fn parse_text(text: &str, file_id: usize) -> Parse<Script>

Parse text into a Parse which can then be turned into an untyped root SyntaxNode. Or turned into a typed Script with tree.

use rslint_parser::{ast::BracketExpr, parse_text, AstNode, SyntaxToken, SyntaxNodeExt, util};

let parse = parse_text("foo. bar[2]", 0);
// The untyped syntax node of `foo.bar[2]`, the root node is `Script`.
let untyped_expr_node = parse.syntax().first_child().unwrap();

// SyntaxNodes can be turned into a nice string representation.
println!("{:#?}", untyped_expr_node);

// You can then cast syntax nodes into a typed AST node.
let typed_ast_node = BracketExpr::cast(untyped_expr_node.first_child().unwrap().to_owned()).unwrap();

// Everything on every ast node is optional because of error recovery.
let prop = dbg!(typed_ast_node.prop()).unwrap();

// You can then go back to an untyped SyntaxNode and get its range, text, parents, children, etc.
assert_eq!(prop.syntax().text(), "2");

// Util has a function for yielding all tokens of a node.
let tokens = untyped_expr_node.tokens();

assert_eq!(&util::concat_tokens(&tokens), "foo. bar[2]")