// A generic trait to abstract the rewriting of an element (of the AST).
-use std::cell::RefCell;
+use std::cell::{Cell, RefCell};
+use std::rc::Rc;
-use syntax::parse::ParseSess;
-use syntax::ptr;
-use syntax::source_map::{SourceMap, Span};
+use rustc_ast::ptr;
+use rustc_span::Span;
use crate::config::{Config, IndentStyle};
+use crate::parse::session::ParseSess;
use crate::shape::Shape;
+use crate::skip::SkipContext;
use crate::visitor::SnippetProvider;
use crate::FormatReport;
#[derive(Clone)]
pub(crate) struct RewriteContext<'a> {
- pub(crate) parse_session: &'a ParseSess,
- pub(crate) source_map: &'a SourceMap,
+ pub(crate) parse_sess: &'a ParseSess,
pub(crate) config: &'a Config,
- pub(crate) inside_macro: RefCell<bool>,
+ pub(crate) inside_macro: Rc<Cell<bool>>,
// Force block indent style even if we are using visual indent style.
- pub(crate) use_block: RefCell<bool>,
+ pub(crate) use_block: Cell<bool>,
// When `is_if_else_block` is true, unindent the comment on top
// of the `else` or `else if`.
- pub(crate) is_if_else_block: RefCell<bool>,
+ pub(crate) is_if_else_block: Cell<bool>,
// When rewriting chain, veto going multi line except the last element
- pub(crate) force_one_line_chain: RefCell<bool>,
- pub(crate) snippet_provider: &'a SnippetProvider<'a>,
+ pub(crate) force_one_line_chain: Cell<bool>,
+ pub(crate) snippet_provider: &'a SnippetProvider,
// Used for `format_snippet`
- pub(crate) macro_rewrite_failure: RefCell<bool>,
+ pub(crate) macro_rewrite_failure: Cell<bool>,
+ pub(crate) is_macro_def: bool,
pub(crate) report: FormatReport,
- pub(crate) skip_macro_names: RefCell<Vec<String>>,
+ pub(crate) skip_context: SkipContext,
+ pub(crate) skipped_range: Rc<RefCell<Vec<(usize, usize)>>>,
+}
+
+pub(crate) struct InsideMacroGuard {
+ is_nested_macro_context: bool,
+ inside_macro_ref: Rc<Cell<bool>>,
+}
+
+impl InsideMacroGuard {
+ pub(crate) fn is_nested(&self) -> bool {
+ self.is_nested_macro_context
+ }
+}
+
+impl Drop for InsideMacroGuard {
+ fn drop(&mut self) {
+ self.inside_macro_ref.replace(self.is_nested_macro_context);
+ }
}
impl<'a> RewriteContext<'a> {
/// Returns `true` if we should use block indent style for rewriting function call.
pub(crate) fn use_block_indent(&self) -> bool {
- self.config.indent_style() == IndentStyle::Block || *self.use_block.borrow()
+ self.config.indent_style() == IndentStyle::Block || self.use_block.get()
}
pub(crate) fn budget(&self, used_width: usize) -> usize {
}
pub(crate) fn inside_macro(&self) -> bool {
- *self.inside_macro.borrow()
+ self.inside_macro.get()
+ }
+
+ pub(crate) fn enter_macro(&self) -> InsideMacroGuard {
+ let is_nested_macro_context = self.inside_macro.replace(true);
+ InsideMacroGuard {
+ is_nested_macro_context,
+ inside_macro_ref: self.inside_macro.clone(),
+ }
+ }
+
+ pub(crate) fn leave_macro(&self) {
+ self.inside_macro.replace(false);
}
pub(crate) fn is_if_else_block(&self) -> bool {
- *self.is_if_else_block.borrow()
+ self.is_if_else_block.get()
}
}