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https://github.com/nushell/reedline.git
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Fix vi character search parsing (#483)
* Fix vi character search parsing Fixes #473 The parser has to consume the items from the iterator to be in a consistent state! * Move `ViToTill` logically to `motion.rs` * Add basic regression test for #473
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@ -1,4 +1,4 @@
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use super::{motion::Motion, parser::ReedlineOption, ViToTill};
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use super::{motion::Motion, motion::ViToTill, parser::ReedlineOption};
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use crate::{EditCommand, ReedlineEvent, Vi};
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use std::iter::Peekable;
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@ -125,28 +125,40 @@ where
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Some('f') => {
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let _ = input.next();
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match input.peek() {
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Some(c) => Some(Command::MoveRightUntil(**c)),
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Some(&c) => {
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input.next();
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Some(Command::MoveRightUntil(*c))
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}
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None => Some(Command::Incomplete),
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}
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}
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Some('t') => {
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let _ = input.next();
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match input.peek() {
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Some(c) => Some(Command::MoveRightBefore(**c)),
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Some(&c) => {
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input.next();
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Some(Command::MoveRightBefore(*c))
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}
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None => Some(Command::Incomplete),
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}
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}
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Some('F') => {
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let _ = input.next();
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match input.peek() {
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Some(c) => Some(Command::MoveLeftUntil(**c)),
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Some(&c) => {
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input.next();
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Some(Command::MoveLeftUntil(*c))
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}
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None => Some(Command::Incomplete),
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}
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}
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Some('T') => {
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let _ = input.next();
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match input.peek() {
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Some(c) => Some(Command::MoveLeftBefore(**c)),
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Some(&c) => {
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input.next();
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Some(Command::MoveLeftBefore(*c))
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}
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None => Some(Command::Incomplete),
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}
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}
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@ -6,6 +6,8 @@ mod vi_keybindings;
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use crossterm::event::{Event, KeyCode, KeyEvent, KeyModifiers};
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pub use vi_keybindings::{default_vi_insert_keybindings, default_vi_normal_keybindings};
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use self::motion::ViToTill;
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use super::EditMode;
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use crate::{
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edit_mode::{keybindings::Keybindings, vi::parser::parse},
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@ -19,43 +21,6 @@ enum ViMode {
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Insert,
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}
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/// Vi left-right motions to or till a character.
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#[derive(Debug, PartialEq, Eq, Clone)]
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pub enum ViToTill {
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/// f
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ToRight(char),
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/// F
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ToLeft(char),
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/// t
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TillRight(char),
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/// T
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TillLeft(char),
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}
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impl ViToTill {
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/// Swap the direction of the to or till for ','
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pub fn reverse(&self) -> Self {
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match self {
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ViToTill::ToRight(c) => ViToTill::ToLeft(*c),
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ViToTill::ToLeft(c) => ViToTill::ToRight(*c),
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ViToTill::TillRight(c) => ViToTill::TillLeft(*c),
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ViToTill::TillLeft(c) => ViToTill::TillRight(*c),
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}
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}
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}
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impl From<EditCommand> for Option<ViToTill> {
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fn from(edit: EditCommand) -> Self {
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match edit {
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EditCommand::MoveLeftBefore(c) => Some(ViToTill::TillLeft(c)),
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EditCommand::MoveLeftUntil(c) => Some(ViToTill::ToLeft(c)),
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EditCommand::MoveRightBefore(c) => Some(ViToTill::TillRight(c)),
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EditCommand::MoveRightUntil(c) => Some(ViToTill::ToRight(c)),
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_ => None,
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}
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}
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}
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/// This parses incoming input `Event`s like a Vi-Style editor
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pub struct Vi {
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cache: Vec<char>,
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@ -1,5 +1,7 @@
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use std::iter::Peekable;
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use crate::EditCommand;
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pub fn parse_motion<'iter, I>(input: &mut Peekable<I>) -> Option<Motion>
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where
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I: Iterator<Item = &'iter char>,
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@ -43,19 +45,43 @@ where
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}
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Some('f') => {
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let _ = input.next();
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input.peek().map(|c| Motion::RightUntil(**c))
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match input.peek() {
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Some(&x) => {
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input.next();
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Some(Motion::RightUntil(*x))
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}
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None => None,
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}
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}
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Some('t') => {
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let _ = input.next();
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input.peek().map(|c| Motion::RightBefore(**c))
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match input.peek() {
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Some(&x) => {
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input.next();
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Some(Motion::RightBefore(*x))
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}
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None => None,
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}
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}
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Some('F') => {
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let _ = input.next();
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input.peek().map(|c| Motion::LeftUntil(**c))
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match input.peek() {
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Some(&x) => {
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input.next();
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Some(Motion::LeftUntil(*x))
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}
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None => None,
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}
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}
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Some('T') => {
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let _ = input.next();
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input.peek().map(|c| Motion::LeftBefore(**c))
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match input.peek() {
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Some(&x) => {
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input.next();
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Some(Motion::LeftBefore(*x))
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}
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None => None,
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}
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}
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_ => None,
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}
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@ -77,3 +103,40 @@ pub enum Motion {
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LeftUntil(char),
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LeftBefore(char),
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}
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/// Vi left-right motions to or till a character.
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#[derive(Debug, PartialEq, Eq, Clone)]
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pub enum ViToTill {
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/// f
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ToRight(char),
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/// F
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ToLeft(char),
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/// t
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TillRight(char),
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/// T
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TillLeft(char),
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}
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impl ViToTill {
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/// Swap the direction of the to or till for ','
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pub fn reverse(&self) -> Self {
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match self {
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ViToTill::ToRight(c) => ViToTill::ToLeft(*c),
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ViToTill::ToLeft(c) => ViToTill::ToRight(*c),
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ViToTill::TillRight(c) => ViToTill::TillLeft(*c),
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ViToTill::TillLeft(c) => ViToTill::TillRight(*c),
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}
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}
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}
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impl From<EditCommand> for Option<ViToTill> {
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fn from(edit: EditCommand) -> Self {
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match edit {
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EditCommand::MoveLeftBefore(c) => Some(ViToTill::TillLeft(c)),
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EditCommand::MoveLeftUntil(c) => Some(ViToTill::ToLeft(c)),
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EditCommand::MoveRightBefore(c) => Some(ViToTill::TillRight(c)),
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EditCommand::MoveRightUntil(c) => Some(ViToTill::ToRight(c)),
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_ => None,
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}
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}
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}
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@ -237,6 +237,23 @@ mod tests {
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);
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}
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#[test]
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fn test_find_action() {
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let input = ['d', 't', 'd'];
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let output = vi_parse(&input);
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assert_eq!(
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output,
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ParseResult {
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multiplier: None,
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command: Some(Command::Delete),
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count: None,
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motion: Some(Motion::RightBefore('d')),
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valid: true
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}
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);
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}
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#[test]
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fn test_has_garbage() {
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let input = ['2', 'd', 'm'];
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@ -254,6 +271,23 @@ mod tests {
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);
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}
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#[test]
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fn test_find_motion() {
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let input = ['2', 'f', 'f'];
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let output = vi_parse(&input);
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assert_eq!(
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output,
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ParseResult {
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multiplier: Some(2),
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command: Some(Command::MoveRightUntil('f')),
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count: None,
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motion: None,
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valid: true
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}
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);
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}
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#[test]
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fn test_two_up() {
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let input = ['2', 'k'];
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