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This commit is contained in:
Skyler Hawthorne 2023-04-27 09:57:53 -04:00
parent 15714ac32e
commit 6db03fa41d
1 changed files with 108 additions and 16 deletions
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124
helix-core/src/indent.rs
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@ -240,7 +240,7 @@ fn get_first_in_line(mut node: Node, new_line_byte_pos: Option<usize>) -> Vec<bo
/// This is usually constructed in one of 2 ways:
/// - Successively add indent captures to get the (added) indent from a single line
/// - Successively add the indent results for each line
#[derive(Default)]
#[derive(Default, Debug)]
pub struct Indentation {
/// The total indent (the number of indent levels) is defined as max(0, indent-outdent).
/// The string that this results in depends on the indent style (spaces or tabs, etc.)
@ -281,11 +281,12 @@ fn as_string(&self, indent_style: &IndentStyle) -> String {
}
/// An indent definition which corresponds to a capture from the indent query
#[derive(Debug)]
struct IndentCapture {
capture_type: IndentCaptureType,
scope: IndentScope,
}
#[derive(Clone, Copy)]
#[derive(Clone, Copy, Debug)]
enum IndentCaptureType {
Indent,
Outdent,
@ -301,7 +302,7 @@ fn default_scope(&self) -> IndentScope {
/// This defines which part of a node an [IndentCapture] applies to.
/// Each [IndentCaptureType] has a default scope, but the scope can be changed
/// with `#set!` property declarations.
#[derive(Clone, Copy)]
#[derive(Clone, Copy, Debug)]
enum IndentScope {
/// The indent applies to the whole node
All,
@ -311,6 +312,7 @@ enum IndentScope {
/// A capture from the indent query which does not define an indent but extends
/// the range of a node. This is used before the indent is calculated.
#[derive(Debug)]
enum ExtendCapture {
Extend,
PreventOnce,
@ -319,6 +321,7 @@ enum ExtendCapture {
/// The result of running a tree-sitter indent query. This stores for
/// each node (identified by its ID) the relevant captures (already filtered
/// by predicates).
#[derive(Debug)]
struct IndentQueryResult {
indent_captures: HashMap<usize, Vec<IndentCapture>>,
extend_captures: HashMap<usize, Vec<ExtendCapture>>,
@ -337,8 +340,39 @@ fn query_indents(
let mut indent_captures: HashMap<usize, Vec<IndentCapture>> = HashMap::new();
let mut extend_captures: HashMap<usize, Vec<ExtendCapture>> = HashMap::new();
cursor.set_byte_range(range);
enum End {
Start,
End,
}
let get_line_num = |node: Node, end: End| {
let get_position = match end {
End::Start => Node::start_position,
End::End => Node::end_position,
};
let get_byte = match end {
End::Start => Node::start_byte,
End::End => Node::end_byte,
};
let mut node_line = get_position(&node).row;
// Adjust for the new line that will be inserted
if let Some((line, byte)) = new_line_break {
if node_line == line && get_byte(&node) >= byte {
node_line += 1;
}
}
node_line
};
// Iterate over all captures from the query
for m in cursor.matches(query, syntax.tree().root_node(), RopeProvider(text)) {
log::debug!("{:?}", m);
// Skip matches where not all custom predicates are fulfilled
if !query.general_predicates(m.pattern_index).iter().all(|pred| {
match pred.operator.as_ref() {
@ -363,21 +397,14 @@ fn query_indents(
Some(QueryPredicateArg::Capture(capt1)),
Some(QueryPredicateArg::Capture(capt2))
) => {
let get_line_num = |node: Node| {
let mut node_line = node.start_position().row;
// Adjust for the new line that will be inserted
if let Some((line, byte)) = new_line_break {
if node_line==line && node.start_byte()>=byte {
node_line += 1;
}
}
node_line
};
let n1 = m.nodes_for_capture_index(*capt1).next();
let n2 = m.nodes_for_capture_index(*capt2).next();
match (n1, n2) {
(Some(n1), Some(n2)) => {
let same_line = get_line_num(n1)==get_line_num(n2);
let n1_line = get_line_num(n1, End::Start);
let n2_line = get_line_num(n2, End::Start);
log::debug!("n1 line: {}, n2 line: {}", n1_line, n2_line);
let same_line = n1_line == n2_line;
same_line==(pred.operator.as_ref()=="same-line?")
}
_ => true,
@ -388,6 +415,46 @@ fn query_indents(
}
}
}
"same-lines?" | "not-same-lines?" => {
match (pred.args.get(0), pred.args.get(1)) {
(
Some(QueryPredicateArg::Capture(capt1)),
Some(QueryPredicateArg::Capture(capt2))
) => {
let n1 = m.nodes_for_capture_index(*capt1).next();
let n2 = m.nodes_for_capture_index(*capt2).next();
match (n1, n2) {
(Some(n1), Some(n2)) => {
let n1_line_span = (get_line_num(n1, End::Start), get_line_num(n1, End::End));
let n2_line_span = (get_line_num(n2, End::Start), get_line_num(n2, End::End));
let same_lines = n1_line_span == n2_line_span;
same_lines == (pred.operator.as_ref() == "same-lines?")
}
_ => true,
}
}
_ => {
panic!("Invalid indent query: Arguments to \"{}\" must be 2 captures", pred.operator);
}
}
}
"one-line?" | "not-one-line?" => match pred.args.get(0) {
Some(QueryPredicateArg::Capture(capture_idx)) => {
let node = m.nodes_for_capture_index(*capture_idx).next();
match node {
Some(node) => {
let (start_line, end_line) = (get_line_num(node, End::Start), get_line_num(node, End::End));
let one_line = end_line - start_line == 1;
one_line == (pred.operator.as_ref() == "one-line?")
},
_ => true,
}
}
_ => {
panic!("Invalid indent query: Arguments to \"not-kind-eq?\" must be a capture and a string");
}
},
_ => {
panic!(
"Invalid indent query: Unknown predicate (\"{}\")",
@ -398,6 +465,9 @@ fn query_indents(
}) {
continue;
}
log::debug!("passed predicates");
for capture in m.captures {
let capture_name = query.capture_names()[capture.index as usize].as_str();
let capture_type = match capture_name {
@ -459,10 +529,15 @@ fn query_indents(
.push(indent_capture);
}
}
IndentQueryResult {
let result = IndentQueryResult {
indent_captures,
extend_captures,
}
};
log::debug!("{:?}", result);
result
}
/// Handle extend queries. deepest_preceding is the deepest descendant of node that directly precedes the cursor position.
@ -651,6 +726,7 @@ pub fn treesitter_indent_for_pos(
let is_first = *first_in_line.last().unwrap();
// Apply all indent definitions for this node
if let Some(definitions) = indent_captures.get(&node.id()) {
log::debug!("found def: {:?}", definitions);
for definition in definitions {
match definition.scope {
IndentScope::All => {
@ -667,9 +743,13 @@ pub fn treesitter_indent_for_pos(
}
}
log::debug!("indent for line: {:?}", indent_for_line);
log::debug!("indent for line below: {:?}", indent_for_line_below);
if let Some(parent) = node.parent() {
let mut node_line = node.start_position().row;
let mut parent_line = parent.start_position().row;
if node_line == line && new_line {
// Also consider the line that will be inserted
if node.start_byte() >= byte_pos {
@ -679,17 +759,26 @@ pub fn treesitter_indent_for_pos(
parent_line += 1;
}
};
log::debug!("node line: {:?}", node_line);
log::debug!("found parent line: {:?}", parent_line);
if node_line != parent_line {
if node_line < line + (new_line as usize) {
// Don't add indent for the line below the line of the query
result.add_line(&indent_for_line_below);
log::debug!("added indent for line below: {:?}", result);
}
if node_line == parent_line + 1 {
indent_for_line_below = indent_for_line;
log::debug!("moved up a line");
} else {
result.add_line(&indent_for_line);
indent_for_line_below = Indentation::default();
log::debug!("added indent for current line: {:?}", result);
}
indent_for_line = Indentation::default();
}
@ -707,6 +796,9 @@ pub fn treesitter_indent_for_pos(
break;
}
}
log::debug!("{:?}", result);
Some(result.as_string(indent_style))
}