use std::collections::HashMap;
use config::lists::*;
-use syntax::codemap::{BytePos, Span};
use syntax::parse::new_parser_from_tts;
use syntax::parse::parser::Parser;
use syntax::parse::token::{BinOpToken, DelimToken, Token};
use syntax::print::pprust;
+use syntax::source_map::{BytePos, Span};
use syntax::symbol;
use syntax::tokenstream::{Cursor, ThinTokenStream, TokenStream, TokenTree};
-use syntax::util::ThinVec;
+use syntax::ThinVec;
use syntax::{ast, ptr};
-use codemap::SpanUtils;
use comment::{
contains_comment, remove_trailing_white_spaces, CharClasses, FindUncommented, FullCodeCharKind,
LineClasses,
use overflow;
use rewrite::{Rewrite, RewriteContext};
use shape::{Indent, Shape};
+use source_map::SpanUtils;
use spanned::Spanned;
use utils::{format_visibility, mk_sp, rewrite_ident, wrap_str};
+use visitor::FmtVisitor;
const FORCED_BRACKET_MACROS: &[&str] = &["vec!"];
Item(ptr::P<ast::Item>),
}
+impl MacroArg {
+ fn is_item(&self) -> bool {
+ match self {
+ MacroArg::Item(..) => true,
+ _ => false,
+ }
+ }
+}
+
impl Rewrite for ast::Item {
fn rewrite(&self, context: &RewriteContext, shape: Shape) -> Option<String> {
let mut visitor = ::visitor::FmtVisitor::from_context(context);
visitor.block_indent = shape.indent;
visitor.last_pos = self.span().lo();
visitor.visit_item(self);
- Some(visitor.buffer)
+ Some(visitor.buffer.to_owned())
}
}
}
return return_original_snippet_with_failure_marked(context, mac.span);
}
+ _ if arg_vec.last().map_or(false, MacroArg::is_item) => continue,
_ => return return_original_snippet_with_failure_marked(context, mac.span),
}
}
}
+ if !arg_vec.is_empty() && arg_vec.iter().all(MacroArg::is_item) {
+ return rewrite_macro_with_items(
+ context,
+ &arg_vec,
+ ¯o_name,
+ shape,
+ style,
+ position,
+ mac.span,
+ );
+ }
+
match style {
DelimToken::Paren => {
// Format macro invocation as function call, preserve the trailing
overflow::rewrite_with_parens(
context,
¯o_name,
- &arg_vec.iter().map(|e| &*e).collect::<Vec<_>>(),
+ arg_vec.iter(),
shape,
mac.span,
context.config.width_heuristics().fn_call_width,
} else {
Some(SeparatorTactic::Never)
},
- ).map(|rw| match position {
+ )
+ .map(|rw| match position {
MacroPosition::Item => format!("{};", rw),
_ => rw,
})
force_trailing_comma = Some(SeparatorTactic::Vertical);
};
}
- // Convert `MacroArg` into `ast::Expr`, as `rewrite_array` only accepts the latter.
- let arg_vec = &arg_vec.iter().map(|e| &*e).collect::<Vec<_>>();
let rewrite = rewrite_array(
macro_name,
- arg_vec,
+ arg_vec.iter(),
mac.span,
context,
shape,
";",
|branch| branch.span.lo(),
|branch| branch.span.hi(),
- |branch| branch.rewrite(context, arm_shape, multi_branch_style),
+ |branch| match branch.rewrite(context, arm_shape, multi_branch_style) {
+ Some(v) => Some(v),
+ // if the rewrite returned None because a macro could not be rewritten, then return the
+ // original body
+ None if *context.macro_rewrite_failure.borrow() == true => {
+ Some(context.snippet(branch.body).trim().to_string())
+ }
+ None => None,
+ },
context.snippet_provider.span_after(span, "{"),
span.hi(),
false,
- ).collect::<Vec<_>>();
+ )
+ .collect::<Vec<_>>();
let fmt = ListFormatting::new(arm_shape, context.config)
.separator(if def.legacy { ";" } else { "" })
fn delim_token_to_str(
context: &RewriteContext,
- delim_token: &DelimToken,
+ delim_token: DelimToken,
shape: Shape,
use_multiple_lines: bool,
inner_is_empty: bool,
) -> (String, String) {
- let (lhs, rhs) = match *delim_token {
+ let (lhs, rhs) = match delim_token {
DelimToken::Paren => ("(", ")"),
DelimToken::Bracket => ("[", "]"),
DelimToken::Brace => {
MacroArgKind::MetaVariable(ty, ref name) => {
Some(format!("${}:{}", name, ty.name.as_str()))
}
- MacroArgKind::Repeat(ref delim_tok, ref args, ref another, ref tok) => {
+ MacroArgKind::Repeat(delim_tok, ref args, ref another, ref tok) => {
let (lhs, inner, rhs) = rewrite_delimited_inner(delim_tok, args)?;
let another = another
.as_ref()
Some(format!("${}{}{}{}{}", lhs, inner, rhs, another, repeat_tok))
}
- MacroArgKind::Delimited(ref delim_tok, ref args) => {
+ MacroArgKind::Delimited(delim_tok, ref args) => {
rewrite_delimited_inner(delim_tok, args)
.map(|(lhs, inner, rhs)| format!("{}{}{}", lhs, inner, rhs))
}
let mut hi = span.hi();
// Parse '*', '+' or '?.
- for ref tok in iter {
- self.set_last_tok(tok);
+ for tok in iter {
+ self.set_last_tok(&tok);
if first {
first = false;
lo = tok.span().lo();
self.add_meta_variable(&mut iter)?;
}
TokenTree::Token(sp, ref t) => self.update_buffer(sp.lo(), t),
- TokenTree::Delimited(sp, delimited) => {
+ TokenTree::Delimited(delimited_span, delimited) => {
if !self.buf.is_empty() {
if next_space(&self.last_tok) == SpaceState::Always {
self.add_separator();
// Parse the stuff inside delimiters.
let mut parser = MacroArgParser::new();
- parser.lo = sp.lo();
+ parser.lo = delimited_span.open.lo();
let delimited_arg = parser.parse(delimited.tts.clone())?;
+ let span = delimited_span.entire();
if self.is_meta_var {
- self.add_repeat(delimited_arg, delimited.delim, &mut iter, *sp)?;
+ self.add_repeat(delimited_arg, delimited.delim, &mut iter, span)?;
self.is_meta_var = false;
} else {
- self.add_delimited(delimited_arg, delimited.delim, *sp);
+ self.add_delimited(delimited_arg, delimited.delim, span);
}
}
}
fn force_space_before(tok: &Token) -> bool {
debug!("tok: force_space_before {:?}", tok);
- match *tok {
+ match tok {
Token::Eq
| Token::Lt
| Token::Le
}
fn ident_like(tok: &Token) -> bool {
- match *tok {
+ match tok {
Token::Ident(..) | Token::Literal(..) | Token::Lifetime(_) => true,
_ => false,
}
fn next_space(tok: &Token) -> SpaceState {
debug!("next_space: {:?}", tok);
- match *tok {
+ match tok {
Token::Not
| Token::BinOp(BinOpToken::And)
| Token::Tilde
} else {
Some(get_prefix_space_width(context, &line))
};
+
let line = if veto_trim || (kind.is_string() && !line.ends_with('\\')) {
veto_trim = kind.is_string() && !line.ends_with('\\');
trimmed = false;
line.trim().to_owned()
};
trimmed_lines.push((trimmed, line, prefix_space_width));
- prefix_space_width
- }).min()?;
+
+ // when computing the minimum, do not consider lines within a string
+ match kind {
+ FullCodeCharKind::InString | FullCodeCharKind::EndString => None,
+ _ => prefix_space_width,
+ }
+ })
+ .min()?;
Some(
- first_line + "\n" + &trimmed_lines
- .iter()
- .map(
- |&(trimmed, ref line, prefix_space_width)| match prefix_space_width {
- _ if !trimmed => line.to_owned(),
- Some(original_indent_width) => {
- let new_indent_width = indent.width() + original_indent_width
- .saturating_sub(min_prefix_space_width);
- let new_indent = Indent::from_width(context.config, new_indent_width);
- format!("{}{}", new_indent.to_string(context.config), line.trim())
- }
- None => String::new(),
- },
- ).collect::<Vec<_>>()
- .join("\n"),
+ first_line
+ + "\n"
+ + &trimmed_lines
+ .iter()
+ .map(
+ |&(trimmed, ref line, prefix_space_width)| match prefix_space_width {
+ _ if !trimmed => line.to_owned(),
+ Some(original_indent_width) => {
+ let new_indent_width = indent.width()
+ + original_indent_width.saturating_sub(min_prefix_space_width);
+ let new_indent = Indent::from_width(context.config, new_indent_width);
+ format!("{}{}", new_indent.to_string(context.config), line)
+ }
+ None => String::new(),
+ },
+ )
+ .collect::<Vec<_>>()
+ .join("\n"),
)
}
let tok = self.toks.next()?;
let (lo, args_paren_kind) = match tok {
TokenTree::Token(..) => return None,
- TokenTree::Delimited(sp, ref d) => (sp.lo(), d.delim),
+ TokenTree::Delimited(delimited_span, ref d) => (delimited_span.open.lo(), d.delim),
};
let args = tok.joint().into();
match self.toks.next()? {
}
let (mut hi, body, whole_body) = match self.toks.next()? {
TokenTree::Token(..) => return None,
- TokenTree::Delimited(sp, _) => {
- let data = sp.data();
+ TokenTree::Delimited(delimited_span, _) => {
+ let data = delimited_span.entire().data();
(
data.hi,
Span::new(data.lo + BytePos(1), data.hi - BytePos(1), data.ctxt),
- sp,
+ delimited_span.entire(),
)
}
};
// First try to format as items, then as statements.
let new_body = match ::format_snippet(&body_str, &config) {
Some(new_body) => new_body,
- None => match ::format_code_block(&body_str, &config) {
- Some(new_body) => new_body,
- None => return None,
- },
+ None => {
+ let new_width = new_width + config.tab_spaces();
+ config.set().max_width(new_width);
+ match ::format_code_block(&body_str, &config) {
+ Some(new_body) => new_body,
+ None => return None,
+ }
+ }
};
let new_body = wrap_str(new_body, config.max_width(), shape)?;
}
(s + l + "\n", !kind.is_string() || l.ends_with('\\'))
},
- ).0;
+ )
+ .0;
// Undo our replacement of macro variables.
// FIXME: this could be *much* more efficient.
Some(result)
}
+
+fn rewrite_macro_with_items(
+ context: &RewriteContext,
+ items: &[MacroArg],
+ macro_name: &str,
+ shape: Shape,
+ style: DelimToken,
+ position: MacroPosition,
+ span: Span,
+) -> Option<String> {
+ let (opener, closer) = match style {
+ DelimToken::Paren => ("(", ")"),
+ DelimToken::Bracket => ("[", "]"),
+ DelimToken::Brace => (" {", "}"),
+ _ => return None,
+ };
+ let trailing_semicolon = match style {
+ DelimToken::Paren | DelimToken::Bracket if position == MacroPosition::Item => ";",
+ _ => "",
+ };
+
+ let mut visitor = FmtVisitor::from_context(context);
+ visitor.block_indent = shape.indent.block_indent(context.config);
+ visitor.last_pos = context.snippet_provider.span_after(span, opener.trim());
+ for item in items {
+ let item = match item {
+ MacroArg::Item(item) => item,
+ _ => return None,
+ };
+ visitor.visit_item(&item);
+ }
+
+ let mut result = String::with_capacity(256);
+ result.push_str(¯o_name);
+ result.push_str(opener);
+ result.push_str(&visitor.block_indent.to_string_with_newline(context.config));
+ result.push_str(visitor.buffer.trim());
+ result.push_str(&shape.indent.to_string_with_newline(context.config));
+ result.push_str(closer);
+ result.push_str(trailing_semicolon);
+ return Some(result);
+}
projects / rust.git / blobdiff