use js_sys::{Array, JsString, RegExp};
use wasm_bindgen::prelude::*;

#[wasm_bindgen(module = "codemirror")]
extern "C" {
	pub type StringStream;

	#[wasm_bindgen(method)]
	#[must_use]
	pub fn eol(this: &StringStream) -> bool;

	#[wasm_bindgen(method)]
	#[must_use]
	pub fn sol(this: &StringStream) -> bool;

	#[wasm_bindgen(method)]
	#[must_use]
	pub fn peek(this: &StringStream) -> JsString;

	#[wasm_bindgen(method)]
	pub fn next(this: &StringStream) -> JsString;

	#[wasm_bindgen(method, js_name = eat)]
	pub fn eat_regexp(this: &StringStream, m: &RegExp) -> bool;

	#[wasm_bindgen(method, js_name = eatWhile)]
	pub fn eat_while_regexp(this: &StringStream, m: &RegExp) -> bool;

	#[wasm_bindgen(method, js_name = eatSpace)]
	pub fn eat_space(this: &StringStream) -> bool;

	#[wasm_bindgen(method, js_name = skipToEnd)]
	pub fn skip_to_end(this: &StringStream);

	#[wasm_bindgen(method, js_name = skipTo)]
	pub fn skip_to(this: &StringStream, str: &str) -> bool;

	#[wasm_bindgen(method, js_name = match)]
	#[must_use]
	pub fn match_str(this: &StringStream, pattern: &str, consume: bool, case_fold: bool) -> bool;

	#[wasm_bindgen(method, js_name = match)]
	#[must_use]
	pub fn match_regexp(this: &StringStream, pattern: &RegExp, consume: bool) -> Array;

	#[wasm_bindgen(method, js_name = backUp)]
	pub fn back_up(this: &StringStream, n: u32);

	#[wasm_bindgen(method)]
	#[must_use]
	pub fn column(this: &StringStream) -> u32;

	#[wasm_bindgen(method)]
	#[must_use]
	pub fn indentation(this: &StringStream) -> u32;

	#[wasm_bindgen(method)]
	#[must_use]
	pub fn current(this: &StringStream) -> String;

	#[wasm_bindgen(method, js_name = lookAhead)]
	#[must_use]
	pub fn look_ahead(this: &StringStream, n: u32) -> Option<String>;
}