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refactor: merge repl_buffer_state, repl_cursor_pos into one mutex (#9031)

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# Description
Merge `repl_buffer_state`, `repl_cursor_pos` into one mutex.

# User-Facing Changes

# Tests + Formatting

# After Submitting
This commit is contained in:
Steven Xu
2023-06-11 08:38:11 +10:00
committed by GitHub
parent 374df9d69f
commit be53ecbbaa
4 changed files with 44 additions and 68 deletions
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44
crates/nu-cli/src/commands/commandline.rs
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@ -61,27 +61,20 @@ impl Command for Commandline {
_input: PipelineData,
) -> Result<PipelineData, ShellError> {
if let Some(cmd) = call.opt::<Value>(engine_state, stack, 0)? {
let mut buffer = engine_state
.repl_buffer_state
.lock()
.expect("repl buffer state mutex");
let mut cursor_pos = engine_state
.repl_cursor_pos
.lock()
.expect("repl cursor pos mutex");
let mut repl = engine_state.repl_state.lock().expect("repl state mutex");
if call.has_flag("cursor") {
let cmd_str = cmd.as_string()?;
match cmd_str.parse::<i64>() {
Ok(n) => {
*cursor_pos = if n <= 0 {
repl.cursor_pos = if n <= 0 {
0usize
} else {
buffer
repl.buffer
.grapheme_indices(true)
.map(|(i, _c)| i)
.nth(n as usize)
.unwrap_or(buffer.len())
.unwrap_or(repl.buffer.len())
}
}
Err(_) => {
@ -96,30 +89,25 @@ impl Command for Commandline {
}
}
} else if call.has_flag("append") {
buffer.push_str(&cmd.as_string()?);
repl.buffer.push_str(&cmd.as_string()?);
} else if call.has_flag("insert") {
let cmd_str = cmd.as_string()?;
buffer.insert_str(*cursor_pos, &cmd_str);
*cursor_pos += cmd_str.len();
let cursor_pos = repl.cursor_pos;
repl.buffer.insert_str(cursor_pos, &cmd_str);
repl.cursor_pos += cmd_str.len();
} else {
*buffer = cmd.as_string()?;
*cursor_pos = buffer.len();
repl.buffer = cmd.as_string()?;
repl.cursor_pos = repl.buffer.len();
}
Ok(Value::Nothing { span: call.head }.into_pipeline_data())
} else {
let buffer = engine_state
.repl_buffer_state
.lock()
.expect("repl buffer state mutex");
let repl = engine_state.repl_state.lock().expect("repl state mutex");
if call.has_flag("cursor") {
let cursor_pos = engine_state
.repl_cursor_pos
.lock()
.expect("repl cursor pos mutex");
let char_pos = buffer
let char_pos = repl
.buffer
.grapheme_indices(true)
.chain(std::iter::once((buffer.len(), "")))
.position(|(i, _c)| i == *cursor_pos)
.chain(std::iter::once((repl.buffer.len(), "")))
.position(|(i, _c)| i == repl.cursor_pos)
.expect("Cursor position isn't on a grapheme boundary");
Ok(Value::String {
val: char_pos.to_string(),
@ -128,7 +116,7 @@ impl Command for Commandline {
.into_pipeline_data())
} else {
Ok(Value::String {
val: buffer.to_string(),
val: repl.buffer.to_string(),
span: call.head,
}
.into_pipeline_data())