mirror of https://github.com/astral-sh/ruff
69 lines
2.2 KiB
Rust
69 lines
2.2 KiB
Rust
use crate::comments::{leading_alternate_branch_comments, trailing_comments};
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use crate::expression::parentheses::Parenthesize;
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use crate::prelude::*;
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use crate::FormatNodeRule;
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use ruff_formatter::write;
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use ruff_python_ast::node::AstNode;
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use rustpython_parser::ast::{Ranged, Stmt, StmtWhile};
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#[derive(Default)]
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pub struct FormatStmtWhile;
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impl FormatNodeRule<StmtWhile> for FormatStmtWhile {
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fn fmt_fields(&self, item: &StmtWhile, f: &mut PyFormatter) -> FormatResult<()> {
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let StmtWhile {
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range: _,
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test,
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body,
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orelse,
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} = item;
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let comments = f.context().comments().clone();
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let dangling_comments = comments.dangling_comments(item.as_any_node_ref());
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let body_start = body.first().map_or(test.end(), Stmt::start);
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let or_else_comments_start =
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dangling_comments.partition_point(|comment| comment.slice().end() < body_start);
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let (trailing_condition_comments, or_else_comments) =
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dangling_comments.split_at(or_else_comments_start);
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write!(
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f,
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[
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text("while"),
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space(),
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test.format().with_options(Parenthesize::IfBreaks),
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text(":"),
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trailing_comments(trailing_condition_comments),
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block_indent(&body.format())
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]
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)?;
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if !orelse.is_empty() {
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// Split between leading comments before the `else` keyword and end of line comments at the end of
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// the `else:` line.
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let trailing_start =
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or_else_comments.partition_point(|comment| comment.position().is_own_line());
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let (leading, trailing) = or_else_comments.split_at(trailing_start);
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write!(
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f,
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[
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leading_alternate_branch_comments(leading, body.last()),
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text("else:"),
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trailing_comments(trailing),
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block_indent(&orelse.format())
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]
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)?;
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}
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Ok(())
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}
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fn fmt_dangling_comments(&self, _node: &StmtWhile, _f: &mut PyFormatter) -> FormatResult<()> {
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// Handled in `fmt_fields`
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Ok(())
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}
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}
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