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style: Only call extend_nodes when deepest_preceding is Some

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Michael Davis 2022-11-08 18:54:41 -06:00 committed by Blaž Hrastnik
parent a19eee6450
commit 260ae3a0f4
1 changed files with 50 additions and 50 deletions
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100
helix-core/src/indent.rs
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@ -461,60 +461,58 @@ fn query_indents(
/// so that the indent computation starts with the correct syntax node.
fn extend_nodes<'a>(
node: &mut Node<'a>,
deepest_preceding: Option<Node<'a>>,
mut deepest_preceding: Node<'a>,
extend_captures: &HashMap<usize, Vec<ExtendCapture>>,
text: RopeSlice,
line: usize,
tab_width: usize,
) {
if let Some(mut deepest_preceding) = deepest_preceding {
let mut stop_extend = false;
while deepest_preceding != *node {
let mut extend_node = false;
// This will be set to true if this node is captured, regardless of whether
// it actually will be extended (e.g. because the cursor isn't indented
// more than the node).
let mut node_captured = false;
if let Some(captures) = extend_captures.get(&deepest_preceding.id()) {
for capture in captures {
match capture {
ExtendCapture::PreventOnce => {
stop_extend = true;
}
ExtendCapture::Extend => {
node_captured = true;
// We extend the node if
// - the cursor is on the same line as the end of the node OR
// - the line that the cursor is on is more indented than the
// first line of the node
if deepest_preceding.end_position().row == line {
let mut stop_extend = false;
while deepest_preceding != *node {
let mut extend_node = false;
// This will be set to true if this node is captured, regardless of whether
// it actually will be extended (e.g. because the cursor isn't indented
// more than the node).
let mut node_captured = false;
if let Some(captures) = extend_captures.get(&deepest_preceding.id()) {
for capture in captures {
match capture {
ExtendCapture::PreventOnce => {
stop_extend = true;
}
ExtendCapture::Extend => {
node_captured = true;
// We extend the node if
// - the cursor is on the same line as the end of the node OR
// - the line that the cursor is on is more indented than the
// first line of the node
if deepest_preceding.end_position().row == line {
extend_node = true;
} else {
let cursor_indent = indent_level_for_line(text.line(line), tab_width);
let node_indent = indent_level_for_line(
text.line(deepest_preceding.start_position().row),
tab_width,
);
if cursor_indent > node_indent {
extend_node = true;
} else {
let cursor_indent =
indent_level_for_line(text.line(line), tab_width);
let node_indent = indent_level_for_line(
text.line(deepest_preceding.start_position().row),
tab_width,
);
if cursor_indent > node_indent {
extend_node = true;
}
}
}
}
}
}
// If we encountered some `StopExtend` capture before, we don't
// extend the node even if we otherwise would
if node_captured && stop_extend {
stop_extend = false;
} else if extend_node && !stop_extend {
*node = deepest_preceding;
break;
}
// This parent always exists since node is an ancestor of deepest_preceding
deepest_preceding = deepest_preceding.parent().unwrap();
}
// If we encountered some `StopExtend` capture before, we don't
// extend the node even if we otherwise would
if node_captured && stop_extend {
stop_extend = false;
} else if extend_node && !stop_extend {
*node = deepest_preceding;
break;
}
// This parent always exists since node is an ancestor of deepest_preceding
deepest_preceding = deepest_preceding.parent().unwrap();
}
}
@ -612,14 +610,16 @@ pub fn treesitter_indent_for_pos(
let extend_captures = query_result.extend_captures;
// Check for extend captures, potentially changing the node that the indent calculation starts with
extend_nodes(
&mut node,
deepest_preceding,
&extend_captures,
text,
line,
tab_width,
);
if let Some(deepest_preceding) = deepest_preceding {
extend_nodes(
&mut node,
deepest_preceding,
&extend_captures,
text,
line,
tab_width,
);
}
let mut first_in_line = get_first_in_line(node, new_line.then(|| byte_pos));
let mut result = Indentation::default();