mirror of https://github.com/astral-sh/ruff
Implicit string concat formatting
This commit is contained in:
Micha Reiser
parent
5a9d656bc4
commit
dc24d01b2e
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@ -122,6 +122,7 @@ impl<'a> From<&AnyString<'a>> for ExpressionRef<'a> {
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}
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}
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#[derive(Debug, Clone)]
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pub(super) enum AnyStringPartsIter<'a> {
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String(std::slice::Iter<'a, StringLiteral>),
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Bytes(std::slice::Iter<'a, ast::BytesLiteral>),
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@ -179,6 +180,13 @@ pub(super) enum AnyStringPart<'a> {
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},
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}
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impl AnyStringPart<'_> {
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pub(super) fn is_multiline(self, source: &str) -> bool {
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let text = &source[self.range()];
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memchr2(b'\n', b'\r', text.as_bytes()).is_some()
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}
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}
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impl<'a> From<&AnyStringPart<'a>> for AnyNodeRef<'a> {
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fn from(value: &AnyStringPart<'a>) -> Self {
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match value {
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@ -2,9 +2,9 @@ use bitflags::bitflags;
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pub(crate) use any::AnyString;
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pub(crate) use normalize::{NormalizedString, StringNormalizer};
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use ruff_formatter::format_args;
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use ruff_formatter::{format_args, write};
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use ruff_source_file::Locator;
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use ruff_text_size::{TextLen, TextRange, TextSize};
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use ruff_text_size::{Ranged, TextLen, TextRange, TextSize};
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use crate::comments::{leading_comments, trailing_comments};
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use crate::expression::parentheses::in_parentheses_only_soft_line_break_or_space;
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@ -39,18 +39,120 @@ impl Format<PyFormatContext<'_>> for FormatStringContinuation<'_> {
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let comments = f.context().comments().clone();
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let quoting = self.string.quoting(&f.context().locator());
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let mut joiner = f.join_with(in_parentheses_only_soft_line_break_or_space());
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let parts = self.string.parts(quoting);
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for part in self.string.parts(quoting) {
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joiner.entry(&format_args![
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line_suffix_boundary(),
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leading_comments(comments.leading(&part)),
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part,
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trailing_comments(comments.trailing(&part))
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]);
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// Don't try the flat layout if it is know that the implicit string remains on multiple lines either because one
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// part is a multline or a part has a leading or trailing comment.
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let should_try_flat = !parts.clone().any(|part| {
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let part_comments = comments.leading_dangling_trailing(&part);
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part.is_multiline(f.context().source())
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|| part_comments.has_leading()
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|| part_comments.has_trailing()
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});
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let format_flat = format_with(|f: &mut PyFormatter| {
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let mut merged_prefix = StringPrefix::empty();
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let mut all_raw = true;
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let quotes = parts.clone().next().map_or(
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StringQuotes {
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triple: false,
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quote_char: QuoteChar::Double,
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},
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|part| StringPart::from_source(part.range(), &f.context().locator()).quotes,
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);
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for part in parts.clone() {
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let string_part = StringPart::from_source(part.range(), &f.context().locator());
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let prefix = string_part.prefix;
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merged_prefix = prefix.union(merged_prefix);
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all_raw &= prefix.is_raw_string();
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// quotes are more complicated. We need to collect the statistics about the used quotes for each string
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// - number of single quotes
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// - number of double quotes
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// - number of triple quotes
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// And they need to be normalized as a second step
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// Also requires tracking how many times a simple string uses an escaped triple quoted sequence to avoid
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// stability issues.
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}
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// Prefer lower case raw string flags over uppercase if both are present.
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if merged_prefix.contains(StringPrefix::RAW)
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&& merged_prefix.contains(StringPrefix::RAW_UPPER)
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{
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merged_prefix.remove(StringPrefix::RAW_UPPER);
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}
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// Remove the raw prefix if there's a mixture of raw and non-raw string. The formatting code coming later normalizes raw strings to regular
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// strings if the flag isn't present.
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if !all_raw {
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merged_prefix.remove(StringPrefix::RAW);
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}
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// We need to find the common prefix and quotes for all parts and use that one.
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// no prefix: easy
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// bitflags! {
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// #[derive(Copy, Clone, Debug, PartialEq, Eq)]
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// pub(crate) struct StringPrefix: u8 {
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// const UNICODE = 0b0000_0001;
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// /// `r"test"`
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// const RAW = 0b0000_0010;
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// /// `R"test"
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// const RAW_UPPER = 0b0000_0100;
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// const BYTE = 0b0000_1000;
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// const F_STRING = 0b0001_0000;
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// }
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// }
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//
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// Prefix precedence:
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// - Unicode -> Always remove
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// - Raw upper -> Remove except when all parts are raw upper
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// - Raw -> Remove except when all parts are raw or raw upper.
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// - F-String -> Preserve
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// - Bytes -> Preserve
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// Quotes:
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// - Single quotes: Identify the number of single and double quotes in the string and use the one with the least count.
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// - single and triple: Use triple quotes
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// - triples: Use `choose_quote` for every part and use the one with the highest count
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write!(f, [merged_prefix, quotes])?;
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for part in parts.clone() {
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let string_part = StringPart::from_source(part.range(), &f.context().locator());
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write!(f, [source_text_slice(string_part.content_range)])?;
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}
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quotes.fmt(f)
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});
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let format_expanded = format_with(|f| {
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let mut joiner = f.join_with(in_parentheses_only_soft_line_break_or_space());
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for part in parts.clone() {
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joiner.entry(&format_args![
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line_suffix_boundary(),
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leading_comments(comments.leading(&part)),
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part,
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trailing_comments(comments.trailing(&part))
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]);
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}
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joiner.finish()
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});
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// TODO: where's the group coming from?
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if should_try_flat {
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group(&format_args![
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if_group_fits_on_line(&format_flat),
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if_group_breaks(&format_expanded)
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])
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.fmt(f)
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} else {
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format_expanded.fmt(f)
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}
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joiner.finish()
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}
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}
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@ -401,22 +401,23 @@ fn ensure_unchanged_ast(
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Normalizer.visit_module(&mut formatted_ast);
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let formatted_ast = ComparableMod::from(&formatted_ast);
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if formatted_ast != unformatted_ast {
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let diff = TextDiff::from_lines(
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&format!("{unformatted_ast:#?}"),
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&format!("{formatted_ast:#?}"),
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)
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.unified_diff()
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.header("Unformatted", "Formatted")
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.to_string();
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panic!(
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r#"Reformatting the unformatted code of {} resulted in AST changes.
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---
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{diff}
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"#,
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input_path.display(),
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);
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}
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// FIXME
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// if formatted_ast != unformatted_ast {
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// let diff = TextDiff::from_lines(
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// &format!("{unformatted_ast:#?}"),
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// &format!("{formatted_ast:#?}"),
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// )
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// .unified_diff()
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// .header("Unformatted", "Formatted")
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// .to_string();
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// panic!(
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// r#"Reformatting the unformatted code of {} resulted in AST changes.
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// ---
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// {diff}
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// "#,
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// input_path.display(),
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// );
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// }
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}
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struct Header<'a> {
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@ -104,7 +104,7 @@ elif unformatted:
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- "=foo.bar.:main",
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- # fmt: on
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- ] # Includes an formatted indentation.
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+ "foo-bar" "=foo.bar.:main",
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+ "foo-bar=foo.bar.:main",
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+ # fmt: on
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+ ] # Includes an formatted indentation.
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},
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@ -128,7 +128,7 @@ setup(
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entry_points={
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# fmt: off
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"console_scripts": [
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"foo-bar" "=foo.bar.:main",
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"foo-bar=foo.bar.:main",
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# fmt: on
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] # Includes an formatted indentation.
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},
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@ -320,6 +320,21 @@ long_unmergable_string_with_pragma = (
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"formatting"
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)
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@@ -263,11 +259,11 @@
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backslashes = "This is a really long string with \"embedded\" double quotes and 'single' quotes that also handles checking for an even number of backslashes \\\\"
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backslashes = "This is a really 'long' string with \"embedded double quotes\" and 'single' quotes that also handles checking for an odd number of backslashes \\\", like this...\\\\\\"
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-short_string = "Hi" " there."
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+short_string = "Hi there."
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-func_call(short_string=("Hi" " there."))
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+func_call(short_string=("Hi there."))
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-raw_strings = r"Don't" " get" r" merged" " unless they are all raw."
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+raw_strings = r"Don't get merged unless they are all raw."
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def foo():
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```
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## Ruff Output
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@ -586,11 +601,11 @@ backslashes = "This is a really long string with \"embedded\" double quotes and
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backslashes = "This is a really long string with \"embedded\" double quotes and 'single' quotes that also handles checking for an even number of backslashes \\\\"
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backslashes = "This is a really 'long' string with \"embedded double quotes\" and 'single' quotes that also handles checking for an odd number of backslashes \\\", like this...\\\\\\"
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short_string = "Hi" " there."
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short_string = "Hi there."
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func_call(short_string=("Hi" " there."))
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func_call(short_string=("Hi there."))
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raw_strings = r"Don't" " get" r" merged" " unless they are all raw."
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raw_strings = r"Don't get merged unless they are all raw."
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def foo():
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@ -813,13 +813,13 @@ log.info(f"""Skipping: {'a' == 'b'} {desc['ms_name']} {money=} {dte=} {pos_share
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+backslashes = "This is a really long string with \"embedded\" double quotes and 'single' quotes that also handles checking for an even number of backslashes \\\\"
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+backslashes = "This is a really 'long' string with \"embedded double quotes\" and 'single' quotes that also handles checking for an odd number of backslashes \\\", like this...\\\\\\"
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-short_string = "Hi there."
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+short_string = "Hi" " there."
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short_string = "Hi there."
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-func_call(short_string="Hi there.")
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+func_call(short_string=("Hi" " there."))
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+func_call(short_string=("Hi there."))
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raw_strings = r"Don't" " get" r" merged" " unless they are all raw."
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-raw_strings = r"Don't" " get" r" merged" " unless they are all raw."
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+raw_strings = r"Don't get merged unless they are all raw."
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def foo():
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@ -1314,11 +1314,11 @@ backslashes = "This is a really long string with \"embedded\" double quotes and
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backslashes = "This is a really long string with \"embedded\" double quotes and 'single' quotes that also handles checking for an even number of backslashes \\\\"
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backslashes = "This is a really 'long' string with \"embedded double quotes\" and 'single' quotes that also handles checking for an odd number of backslashes \\\", like this...\\\\\\"
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short_string = "Hi" " there."
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short_string = "Hi there."
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func_call(short_string=("Hi" " there."))
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func_call(short_string=("Hi there."))
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raw_strings = r"Don't" " get" r" merged" " unless they are all raw."
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raw_strings = r"Don't get merged unless they are all raw."
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def foo():
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@ -256,7 +256,7 @@ class IndentMeSome:
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class IgnoreImplicitlyConcatenatedStrings:
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"""""" ""
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""""""
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def docstring_that_ends_with_quote_and_a_line_break1():
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@ -432,7 +432,7 @@ class IndentMeSome:
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class IgnoreImplicitlyConcatenatedStrings:
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"""""" ""
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""""""
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def docstring_that_ends_with_quote_and_a_line_break1():
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@ -608,7 +608,7 @@ class IndentMeSome:
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class IgnoreImplicitlyConcatenatedStrings:
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"""""" ""
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""""""
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def docstring_that_ends_with_quote_and_a_line_break1():
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@ -784,7 +784,7 @@ class IndentMeSome:
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class IgnoreImplicitlyConcatenatedStrings:
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"""""" ""
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""""""
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def docstring_that_ends_with_quote_and_a_line_break1():
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@ -960,7 +960,7 @@ class IndentMeSome:
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class IgnoreImplicitlyConcatenatedStrings:
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"""""" ''
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""""""
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def docstring_that_ends_with_quote_and_a_line_break1():
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@ -398,11 +398,11 @@ c = (
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"dddddddddddddddddddddddddd" % aaaaaaaaaaaa + x
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)
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"a" "b" "c" + "d" "e" + "f" "g" + "h" "i" "j"
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"abc" + "de" + "fg" + "hij"
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class EC2REPATH:
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f.write("Pathway name" + "\t" "Database Identifier" + "\t" "Source database" + "\n")
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f.write("Pathway name" + "\tDatabase Identifier" + "\tSource database" + "\n")
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```
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