|
|
|
@ -1,3 +1,5 @@
|
|
|
|
|
use std::borrow::Cow;
|
|
|
|
|
|
|
|
|
|
use anyhow::{anyhow, Result};
|
|
|
|
|
|
|
|
|
|
use crate::{util::lsp_pos_to_pos, OffsetEncoding};
|
|
|
|
@ -54,6 +56,112 @@ pub fn parse(s: &str) -> Result<Snippet<'_>> {
|
|
|
|
|
parser::parse(s).map_err(|rest| anyhow!("Failed to parse snippet. Remaining input: {}", rest))
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
pub fn into_transaction<'a>(
|
|
|
|
|
snippet: Snippet<'a>,
|
|
|
|
|
doc: &helix_core::Rope,
|
|
|
|
|
selection: &helix_core::Selection,
|
|
|
|
|
edit: &lsp_types::TextEdit,
|
|
|
|
|
line_ending: &str,
|
|
|
|
|
offset_encoding: OffsetEncoding,
|
|
|
|
|
) -> helix_core::Transaction {
|
|
|
|
|
use helix_core::{smallvec, Range, Selection, Transaction};
|
|
|
|
|
use SnippetElement::*;
|
|
|
|
|
|
|
|
|
|
let text = doc.slice(..);
|
|
|
|
|
let primary_cursor = selection.primary().cursor(text);
|
|
|
|
|
|
|
|
|
|
let start_offset = match lsp_pos_to_pos(doc, edit.range.start, offset_encoding) {
|
|
|
|
|
Some(start) => start as i128 - primary_cursor as i128,
|
|
|
|
|
None => return Transaction::new(doc),
|
|
|
|
|
};
|
|
|
|
|
let end_offset = match lsp_pos_to_pos(doc, edit.range.end, offset_encoding) {
|
|
|
|
|
Some(end) => end as i128 - primary_cursor as i128,
|
|
|
|
|
None => return Transaction::new(doc),
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
let newline_with_offset = format!(
|
|
|
|
|
"{line_ending}{blank:width$}",
|
|
|
|
|
width = edit.range.start.character as usize,
|
|
|
|
|
blank = ""
|
|
|
|
|
);
|
|
|
|
|
|
|
|
|
|
let mut insert = String::new();
|
|
|
|
|
let mut offset = (primary_cursor as i128 + start_offset) as usize;
|
|
|
|
|
let mut tabstops: Vec<Range> = Vec::new();
|
|
|
|
|
|
|
|
|
|
for element in snippet.elements {
|
|
|
|
|
match element {
|
|
|
|
|
Text(text) => {
|
|
|
|
|
// small optimization to avoid calling replace when it's unnecessary
|
|
|
|
|
let text = if text.contains('\n') {
|
|
|
|
|
Cow::Owned(text.replace('\n', &newline_with_offset))
|
|
|
|
|
} else {
|
|
|
|
|
Cow::Borrowed(text)
|
|
|
|
|
};
|
|
|
|
|
offset += text.chars().count();
|
|
|
|
|
insert.push_str(&text);
|
|
|
|
|
}
|
|
|
|
|
Variable {
|
|
|
|
|
name: _name,
|
|
|
|
|
regex: None,
|
|
|
|
|
r#default,
|
|
|
|
|
} => {
|
|
|
|
|
// TODO: variables. For now, fall back to the default, which defaults to "".
|
|
|
|
|
let text = r#default.unwrap_or_default();
|
|
|
|
|
offset += text.chars().count();
|
|
|
|
|
insert.push_str(text);
|
|
|
|
|
}
|
|
|
|
|
Tabstop { .. } => {
|
|
|
|
|
// TODO: tabstop indexing: 0 is final cursor position. 1,2,.. are positions.
|
|
|
|
|
// TODO: merge tabstops with the same index
|
|
|
|
|
tabstops.push(Range::point(offset));
|
|
|
|
|
}
|
|
|
|
|
Placeholder {
|
|
|
|
|
tabstop: _tabstop,
|
|
|
|
|
value,
|
|
|
|
|
} => match value.as_ref() {
|
|
|
|
|
// https://doc.rust-lang.org/beta/unstable-book/language-features/box-patterns.html
|
|
|
|
|
// would make this a bit nicer
|
|
|
|
|
Text(text) => {
|
|
|
|
|
let len_chars = text.chars().count();
|
|
|
|
|
tabstops.push(Range::new(offset, offset + len_chars + 1));
|
|
|
|
|
offset += len_chars;
|
|
|
|
|
insert.push_str(text);
|
|
|
|
|
}
|
|
|
|
|
other => {
|
|
|
|
|
log::error!(
|
|
|
|
|
"Discarding snippet: generating a transaction for placeholder contents {:?} is unimplemented.",
|
|
|
|
|
other
|
|
|
|
|
);
|
|
|
|
|
return Transaction::new(doc);
|
|
|
|
|
}
|
|
|
|
|
},
|
|
|
|
|
other => {
|
|
|
|
|
log::error!(
|
|
|
|
|
"Discarding snippet: generating a transaction for {:?} is unimplemented.",
|
|
|
|
|
other
|
|
|
|
|
);
|
|
|
|
|
return Transaction::new(doc);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
let transaction = Transaction::change_by_selection(doc, selection, |range| {
|
|
|
|
|
let cursor = range.cursor(text);
|
|
|
|
|
(
|
|
|
|
|
(cursor as i128 + start_offset) as usize,
|
|
|
|
|
(cursor as i128 + end_offset) as usize,
|
|
|
|
|
Some(insert.clone().into()),
|
|
|
|
|
)
|
|
|
|
|
});
|
|
|
|
|
|
|
|
|
|
if let Some(first) = tabstops.first() {
|
|
|
|
|
transaction.with_selection(Selection::new(smallvec![*first], 0))
|
|
|
|
|
} else {
|
|
|
|
|
transaction
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
mod parser {
|
|
|
|
|
use helix_parsec::*;
|
|
|
|
|
|
|
|
|
|