use std::borrow::Cow;
-use bytecount;
-
use rustc_target::spec::abi;
use syntax::ast::{
- self, Attribute, CrateSugar, MetaItem, MetaItemKind, NestedMetaItem, NestedMetaItemKind,
- NodeId, Path, Visibility, VisibilityKind,
+ self, Attribute, CrateSugar, MetaItem, MetaItemKind, NestedMetaItem, NodeId, Path, Visibility,
+ VisibilityKind,
};
use syntax::ptr;
-use syntax::source_map::{BytePos, Span, NO_EXPANSION};
-use syntax_pos::Mark;
+use syntax::source_map::{BytePos, Span, SyntaxContext};
+use syntax::symbol::{sym, Symbol};
+use syntax_pos::ExpnId;
use unicode_width::UnicodeWidthStr;
use crate::comment::{filter_normal_code, CharClasses, FullCodeCharKind, LineClasses};
use crate::rewrite::RewriteContext;
use crate::shape::{Indent, Shape};
-pub const DEPR_SKIP_ANNOTATION: &str = "rustfmt_skip";
-pub const SKIP_ANNOTATION: &str = "rustfmt::skip";
+#[inline]
+pub(crate) fn depr_skip_annotation() -> Symbol {
+ Symbol::intern("rustfmt_skip")
+}
+
+#[inline]
+pub(crate) fn skip_annotation() -> Symbol {
+ Symbol::intern("rustfmt::skip")
+}
-pub fn rewrite_ident<'a>(context: &'a RewriteContext<'_>, ident: ast::Ident) -> &'a str {
+pub(crate) fn rewrite_ident<'a>(context: &'a RewriteContext<'_>, ident: ast::Ident) -> &'a str {
context.snippet(ident.span)
}
// Computes the length of a string's last line, minus offset.
-pub fn extra_offset(text: &str, shape: Shape) -> usize {
+pub(crate) fn extra_offset(text: &str, shape: Shape) -> usize {
match text.rfind('\n') {
// 1 for newline character
Some(idx) => text.len().saturating_sub(idx + 1 + shape.used_width()),
}
}
-pub fn is_same_visibility(a: &Visibility, b: &Visibility) -> bool {
+pub(crate) fn is_same_visibility(a: &Visibility, b: &Visibility) -> bool {
match (&a.node, &b.node) {
(
VisibilityKind::Restricted { path: p, .. },
}
// Uses Cow to avoid allocating in the common cases.
-pub fn format_visibility(context: &RewriteContext<'_>, vis: &Visibility) -> Cow<'static, str> {
+pub(crate) fn format_visibility(
+ context: &RewriteContext<'_>,
+ vis: &Visibility,
+) -> Cow<'static, str> {
match vis.node {
VisibilityKind::Public => Cow::from("pub "),
VisibilityKind::Inherited => Cow::from(""),
}
#[inline]
-pub fn format_async(is_async: ast::IsAsync) -> &'static str {
+pub(crate) fn format_async(is_async: &ast::IsAsync) -> &'static str {
match is_async {
ast::IsAsync::Async { .. } => "async ",
ast::IsAsync::NotAsync => "",
}
#[inline]
-pub fn format_constness(constness: ast::Constness) -> &'static str {
+pub(crate) fn format_constness(constness: ast::Constness) -> &'static str {
match constness {
ast::Constness::Const => "const ",
ast::Constness::NotConst => "",
}
#[inline]
-pub fn format_defaultness(defaultness: ast::Defaultness) -> &'static str {
+pub(crate) fn format_defaultness(defaultness: ast::Defaultness) -> &'static str {
match defaultness {
ast::Defaultness::Default => "default ",
ast::Defaultness::Final => "",
}
#[inline]
-pub fn format_unsafety(unsafety: ast::Unsafety) -> &'static str {
+pub(crate) fn format_unsafety(unsafety: ast::Unsafety) -> &'static str {
match unsafety {
ast::Unsafety::Unsafe => "unsafe ",
ast::Unsafety::Normal => "",
}
#[inline]
-pub fn format_auto(is_auto: ast::IsAuto) -> &'static str {
+pub(crate) fn format_auto(is_auto: ast::IsAuto) -> &'static str {
match is_auto {
ast::IsAuto::Yes => "auto ",
ast::IsAuto::No => "",
}
#[inline]
-pub fn format_mutability(mutability: ast::Mutability) -> &'static str {
+pub(crate) fn format_mutability(mutability: ast::Mutability) -> &'static str {
match mutability {
ast::Mutability::Mutable => "mut ",
ast::Mutability::Immutable => "",
}
#[inline]
-pub fn format_abi(abi: abi::Abi, explicit_abi: bool, is_mod: bool) -> Cow<'static, str> {
+pub(crate) fn format_abi(abi: abi::Abi, explicit_abi: bool, is_mod: bool) -> Cow<'static, str> {
if abi == abi::Abi::Rust && !is_mod {
Cow::from("")
} else if abi == abi::Abi::C && !explicit_abi {
#[inline]
// Transform `Vec<syntax::ptr::P<T>>` into `Vec<&T>`
-pub fn ptr_vec_to_ref_vec<T>(vec: &[ptr::P<T>]) -> Vec<&T> {
+pub(crate) fn ptr_vec_to_ref_vec<T>(vec: &[ptr::P<T>]) -> Vec<&T> {
vec.iter().map(|x| &**x).collect::<Vec<_>>()
}
#[inline]
-pub fn filter_attributes(attrs: &[ast::Attribute], style: ast::AttrStyle) -> Vec<ast::Attribute> {
+pub(crate) fn filter_attributes(
+ attrs: &[ast::Attribute],
+ style: ast::AttrStyle,
+) -> Vec<ast::Attribute> {
attrs
.iter()
.filter(|a| a.style == style)
}
#[inline]
-pub fn inner_attributes(attrs: &[ast::Attribute]) -> Vec<ast::Attribute> {
+pub
(crate) fn inner_attributes(attrs: &[ast::Attribute]) -> Vec<ast::Attribute> {
filter_attributes(attrs, ast::AttrStyle::Inner)
}
#[inline]
-pub fn outer_attributes(attrs: &[ast::Attribute]) -> Vec<ast::Attribute> {
+pub
(crate) fn outer_attributes(attrs: &[ast::Attribute]) -> Vec<ast::Attribute> {
filter_attributes(attrs, ast::AttrStyle::Outer)
}
#[inline]
-pub fn is_single_line(s: &str) -> bool {
+pub(crate) fn is_single_line(s: &str) -> bool {
s.chars().find(|&c| c == '\n').is_none()
}
#[inline]
-pub fn first_line_contains_single_line_comment(s: &str) -> bool {
+pub(crate) fn first_line_contains_single_line_comment(s: &str) -> bool {
s.lines().next().map_or(false, |l| l.contains("//"))
}
#[inline]
-pub fn last_line_contains_single_line_comment(s: &str) -> bool {
+pub(crate) fn last_line_contains_single_line_comment(s: &str) -> bool {
s.lines().last().map_or(false, |l| l.contains("//"))
}
#[inline]
-pub fn is_attributes_extendable(attrs_str: &str) -> bool {
+pub(crate) fn is_attributes_extendable(attrs_str: &str) -> bool {
!attrs_str.contains('\n') && !last_line_contains_single_line_comment(attrs_str)
}
-// The width of the first line in s.
+/// The width of the first line in s.
#[inline]
-pub fn first_line_width(s: &str) -> usize {
+pub(crate) fn first_line_width(s: &str) -> usize {
unicode_str_width(s.splitn(2, '\n').next().unwrap_or(""))
}
-// The width of the last line in s.
+/// The width of the last line in s.
#[inline]
-pub fn last_line_width(s: &str) -> usize {
+pub(crate) fn last_line_width(s: &str) -> usize {
unicode_str_width(s.rsplitn(2, '\n').next().unwrap_or(""))
}
-// The total used width of the last line.
+/// The total used width of the last line.
#[inline]
-pub fn last_line_used_width(s: &str, offset: usize) -> usize {
+pub(crate) fn last_line_used_width(s: &str, offset: usize) -> usize {
if s.contains('\n') {
last_line_width(s)
} else {
}
#[inline]
-pub fn trimmed_last_line_width(s: &str) -> usize {
+pub(crate) fn trimmed_last_line_width(s: &str) -> usize {
unicode_str_width(match s.rfind('\n') {
Some(n) => s[(n + 1)..].trim(),
None => s.trim(),
}
#[inline]
-pub fn last_line_extendable(s: &str) -> bool {
+pub(crate) fn last_line_extendable(s: &str) -> bool {
if s.ends_with("\"#") {
return true;
}
#[inline]
fn is_skip(meta_item: &MetaItem) -> bool {
- match meta_item.node {
+ match meta_item.kind {
MetaItemKind::Word => {
- let path_str = meta_item.ident.to_string();
- path_str == SKIP_ANNOTATION || path_str == DEPR_SKIP_ANNOTATION
+ let path_str = meta_item.path.to_string();
+ path_str == skip_annotation().as_str() || path_str == depr_skip_annotation().as_str()
}
MetaItemKind::List(ref l) => {
- meta_item.name() == "cfg_attr" && l.len() == 2 && is_skip_nested(&l[1])
+ meta_item.check_name(sym::cfg_attr) && l.len() == 2 && is_skip_nested(&l[1])
}
_ => false,
}
#[inline]
fn is_skip_nested(meta_item: &NestedMetaItem) -> bool {
- match meta_item.node {
- NestedMetaItemKind::MetaItem(ref mi) => is_skip(mi),
- NestedMetaItemKind::Literal(_) => false,
+ match meta_item {
+ NestedMetaItem::MetaItem(ref mi) => is_skip(mi),
+ NestedMetaItem::Literal(_) => false,
}
}
#[inline]
-pub fn contains_skip(attrs: &[Attribute]) -> bool {
+pub(crate) fn contains_skip(attrs: &[Attribute]) -> bool {
attrs
.iter()
.any(|a| a.meta().map_or(false, |a| is_skip(&a)))
}
#[inline]
-pub fn semicolon_for_expr(context: &RewriteContext<'_>, expr: &ast::Expr) -> bool {
- match expr.node {
+pub(crate) fn semicolon_for_expr(context: &RewriteContext<'_>, expr: &ast::Expr) -> bool {
+ match expr.kind {
ast::ExprKind::Ret(..) | ast::ExprKind::Continue(..) | ast::ExprKind::Break(..) => {
context.config.trailing_semicolon()
}
}
#[inline]
-pub fn semicolon_for_stmt(context: &RewriteContext<'_>, stmt: &ast::Stmt) -> bool {
- match stmt.node {
- ast::StmtKind::Semi(ref expr) => match expr.node {
- ast::ExprKind::While(..)
- | ast::ExprKind::WhileLet(..)
- | ast::ExprKind::Loop(..)
- | ast::ExprKind::ForLoop(..) => false,
+pub(crate) fn semicolon_for_stmt(context: &RewriteContext<'_>, stmt: &ast::Stmt) -> bool {
+ match stmt.kind {
+ ast::StmtKind::Semi(ref expr) => match expr.kind {
+ ast::ExprKind::While(..) | ast::ExprKind::Loop(..) | ast::ExprKind::ForLoop(..) => {
+ false
+ }
ast::ExprKind::Break(..) | ast::ExprKind::Continue(..) | ast::ExprKind::Ret(..) => {
context.config.trailing_semicolon()
}
}
#[inline]
-pub fn stmt_expr(stmt: &ast::Stmt) -> Option<&ast::Expr> {
- match stmt.node {
+pub(crate) fn stmt_expr(stmt: &ast::Stmt) -> Option<&ast::Expr> {
+ match stmt.kind {
ast::StmtKind::Expr(ref expr) => Some(expr),
_ => None,
}
}
-#[inline]
-pub fn count_newlines(input: &str) -> usize {
+/// Returns the number of LF and CRLF respectively.
+pub(crate) fn count_lf_crlf(input: &str) -> (usize, usize) {
+ let mut lf = 0;
+ let mut crlf = 0;
+ let mut is_crlf = false;
+ for c in input.as_bytes() {
+ match c {
+ b'\r' => is_crlf = true,
+ b'\n' if is_crlf => crlf += 1,
+ b'\n' => lf += 1,
+ _ => is_crlf = false,
+ }
+ }
+ (lf, crlf)
+}
+
+pub(crate) fn count_newlines(input: &str) -> usize {
// Using bytes to omit UTF-8 decoding
bytecount::count(input.as_bytes(), b'\n')
}
};
}
-pub fn mk_sp(lo: BytePos, hi: BytePos) -> Span {
- Span::new(lo, hi, NO_EXPANSION)
+pub(crate) fn mk_sp(lo: BytePos, hi: BytePos) -> Span {
+ Span::new(lo, hi, SyntaxContext::root())
}
// Returns `true` if the given span does not intersect with file lines.
// Wraps String in an Option. Returns Some when the string adheres to the
// Rewrite constraints defined for the Rewrite trait and None otherwise.
-pub fn wrap_str(s: String, max_width: usize, shape: Shape) -> Option<String> {
+pub(crate) fn wrap_str(s: String, max_width: usize, shape: Shape) -> Option<String> {
if is_valid_str(&filter_normal_code(&s), max_width, shape) {
Some(s)
} else {
}
#[inline]
-pub fn colon_spaces(before: bool, after: bool) -> &'static str {
+pub(crate) fn colon_spaces(config: &Config) -> &'static str {
+ let before = config.space_before_colon();
+ let after = config.space_after_colon();
match (before, after) {
(true, true) => " : ",
(true, false) => " :",
}
#[inline]
-pub fn left_most_sub_expr(e: &ast::Expr) -> &ast::Expr {
- match e.node {
+pub(crate) fn left_most_sub_expr(e: &ast::Expr) -> &ast::Expr {
+ match e.kind {
ast::ExprKind::Call(ref e, _)
| ast::ExprKind::Binary(_, ref e, _)
| ast::ExprKind::Cast(ref e, _)
}
#[inline]
-pub fn starts_with_newline(s: &str) -> bool {
+pub(crate) fn starts_with_newline(s: &str) -> bool {
s.starts_with('\n') || s.starts_with("\r\n")
}
#[inline]
-pub fn first_line_ends_with(s: &str, c: char) -> bool {
+pub(crate) fn first_line_ends_with(s: &str, c: char) -> bool {
s.lines().next().map_or(false, |l| l.ends_with(c))
}
// States whether an expression's last line exclusively consists of closing
// parens, braces, and brackets in its idiomatic formatting.
-pub fn is_block_expr(context: &RewriteContext<'_>, expr: &ast::Expr, repr: &str) -> bool {
- match expr.node {
+pub(crate) fn is_block_expr(context: &RewriteContext<'_>, expr: &ast::Expr, repr: &str) -> bool {
+ match expr.kind {
ast::ExprKind::Mac(..)
| ast::ExprKind::Call(..)
| ast::ExprKind::MethodCall(..)
| ast::ExprKind::Array(..)
| ast::ExprKind::Struct(..)
| ast::ExprKind::While(..)
- | ast::ExprKind::WhileLet(..)
| ast::ExprKind::If(..)
- | ast::ExprKind::IfLet(..)
| ast::ExprKind::Block(..)
+ | ast::ExprKind::Async(..)
| ast::ExprKind::Loop(..)
| ast::ExprKind::ForLoop(..)
+ | ast::ExprKind::TryBlock(..)
| ast::ExprKind::Match(..) => repr.contains('\n'),
ast::ExprKind::Paren(ref expr)
| ast::ExprKind::Binary(_, _, ref expr)
ast::ExprKind::Lit(_) => {
repr.contains('\n') && trimmed_last_line_width(repr) <= context.config.tab_spaces()
}
- _ => false,
+ ast::ExprKind::AddrOf(..)
+ | ast::ExprKind::Assign(..)
+ | ast::ExprKind::AssignOp(..)
+ | ast::ExprKind::Await(..)
+ | ast::ExprKind::Box(..)
+ | ast::ExprKind::Break(..)
+ | ast::ExprKind::Cast(..)
+ | ast::ExprKind::Continue(..)
+ | ast::ExprKind::Err
+ | ast::ExprKind::Field(..)
+ | ast::ExprKind::InlineAsm(..)
+ | ast::ExprKind::Let(..)
+ | ast::ExprKind::Path(..)
+ | ast::ExprKind::Range(..)
+ | ast::ExprKind::Repeat(..)
+ | ast::ExprKind::Ret(..)
+ | ast::ExprKind::Tup(..)
+ | ast::ExprKind::Type(..)
+ | ast::ExprKind::Yield(None) => false,
}
}
/// Removes trailing spaces from the specified snippet. We do not remove spaces
/// inside strings or comments.
-pub fn remove_trailing_white_spaces(text: &str) -> String {
+pub(crate) fn remove_trailing_white_spaces(text: &str) -> String {
let mut buffer = String::with_capacity(text.len());
let mut space_buffer = String::with_capacity(128);
for (char_kind, c) in CharClasses::new(text.chars()) {
/// Indent each line according to the specified `indent`.
/// e.g.
///
-/// ```rust,ignore
+/// ```rust,compile_fail
/// foo!{
/// x,
/// y,
///
/// will become
///
-/// ```rust,ignore
+/// ```rust,compile_fail
/// foo!{
/// x,
/// y,
/// ),
/// }
/// ```
-pub fn trim_left_preserve_layout(orig: &str, indent: Indent, config: &Config) -> Option<String> {
+pub(crate) fn trim_left_preserve_layout(
+ orig: &str,
+ indent: Indent,
+ config: &Config,
+) -> Option<String> {
let mut lines = LineClasses::new(orig);
let first_line = lines.next().map(|(_, s)| s.trim_end().to_owned())?;
let mut trimmed_lines = Vec::with_capacity(16);
/// Based on the given line, determine if the next line can be indented or not.
/// This allows to preserve the indentation of multi-line literals.
-pub fn indent_next_line(kind: FullCodeCharKind, line: &str, config: &Config) -> bool {
+pub(crate) fn indent_next_line(kind: FullCodeCharKind, line: &str, config: &Config) -> bool {
!(kind.is_string() || (config.version() == Version::Two && kind.is_commented_string()))
|| line.ends_with('\\')
}
-pub fn is_empty_line(s: &str) -> bool {
+pub(crate) fn is_empty_line(s: &str) -> bool {
s.is_empty() || s.chars().all(char::is_whitespace)
}
impl NodeIdExt for NodeId {
fn root() -> NodeId {
- NodeId::placeholder_from_mark(Mark::root())
+ NodeId::placeholder_from_expn_id(ExpnId::root())
}
}
s.width()
}
-pub fn get_skip_macro_names(attrs: &[ast::Attribute]) -> Vec<String> {
- let mut skip_macro_names = vec![];
- for attr in attrs {
- // syntax::ast::Path is implemented partialEq
- // but it is designed for segments.len() == 1
- if format!("{}", attr.path) != "rustfmt::skip::macros" {
- continue;
- }
-
- if let Some(list) = attr.meta_item_list() {
- for spanned in list {
- if let Some(name) = spanned.name() {
- skip_macro_names.push(name.to_string());
- }
- }
- }
- }
- skip_macro_names
-}
-
#[cfg(test)]
mod test {
use super::*;
projects / rust.git / blobdiff