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#[derive(Copy, Clone, Default)]
pub(crate) struct DocumentFormatter {
pub(crate) multiline_array: bool,
is_value: bool,
}
impl toml_edit::visit_mut::VisitMut for DocumentFormatter {
fn visit_document_mut(&mut self, node: &mut toml_edit::Document) {
toml_edit::visit_mut::visit_document_mut(self, node);
}
fn visit_item_mut(&mut self, node: &mut toml_edit::Item) {
let is_parent_value = self.is_value;
if !is_parent_value {
let other = std::mem::take(node);
let other = match other.into_table().map(toml_edit::Item::Table) {
Ok(i) => i,
Err(i) => i,
};
let other = match other
.into_array_of_tables()
.map(toml_edit::Item::ArrayOfTables)
{
Ok(i) => i,
Err(i) => i,
};
self.is_value = other.is_value();
*node = other;
}
toml_edit::visit_mut::visit_item_mut(self, node);
self.is_value = is_parent_value;
}
fn visit_table_mut(&mut self, node: &mut toml_edit::Table) {
node.decor_mut().clear();
// Empty tables could be semantically meaningful, so make sure they are not implicit
if !node.is_empty() {
node.set_implicit(true);
}
toml_edit::visit_mut::visit_table_mut(self, node);
}
fn visit_value_mut(&mut self, node: &mut toml_edit::Value) {
node.decor_mut().clear();
toml_edit::visit_mut::visit_value_mut(self, node);
}
fn visit_array_mut(&mut self, node: &mut toml_edit::Array) {
toml_edit::visit_mut::visit_array_mut(self, node);
if !self.multiline_array || (0..=1).contains(&node.len()) {
node.set_trailing("");
node.set_trailing_comma(false);
} else {
for item in node.iter_mut() {
item.decor_mut().set_prefix("\n ");
}
node.set_trailing("\n");
node.set_trailing_comma(true);
}
}
}
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