1 files changed, 0 insertions, 124 deletions
diff --git a/src/libsyntax/parse/sess.rs b/src/libsyntax/parse/sess.rs
deleted file mode 100644
index e49d3954f8e..00000000000
--- a/src/libsyntax/parse/sess.rs
+++ /dev/null
@@ -1,124 +0,0 @@
-//! Contains `ParseSess` which holds state living beyond what one `Parser` might.
-//! It also serves as an input to the parser itself.
-
-use crate::ast::{CrateConfig, NodeId};
-use crate::early_buffered_lints::{BufferedEarlyLint, BufferedEarlyLintId};
-use crate::source_map::{SourceMap, FilePathMapping};
-use crate::feature_gate::UnstableFeatures;
-
-use errors::{Applicability, Handler, ColorConfig, DiagnosticBuilder};
-use rustc_data_structures::fx::{FxHashSet, FxHashMap};
-use rustc_data_structures::sync::{Lrc, Lock, Once};
-use syntax_pos::{Symbol, Span, MultiSpan};
-use syntax_pos::edition::Edition;
-use syntax_pos::hygiene::ExpnId;
-
-use std::path::PathBuf;
-use std::str;
-
-/// Collected spans during parsing for places where a certain feature was
-/// used and should be feature gated accordingly in `check_crate`.
-#[derive(Default)]
-crate struct GatedSpans {
-    /// Spans collected for gating `let_chains`, e.g. `if a && let b = c {}`.
-    crate let_chains: Lock<Vec<Span>>,
-    /// Spans collected for gating `async_closure`, e.g. `async || ..`.
-    crate async_closure: Lock<Vec<Span>>,
-    /// Spans collected for gating `yield e?` expressions (`generators` gate).
-    crate yields: Lock<Vec<Span>>,
-    /// Spans collected for gating `or_patterns`, e.g. `Some(Foo | Bar)`.
-    crate or_patterns: Lock<Vec<Span>>,
-    /// Spans collected for gating `const_extern_fn`, e.g. `const extern fn foo`.
-    crate const_extern_fn: Lock<Vec<Span>>,
-}
-
-/// Info about a parsing session.
-pub struct ParseSess {
-    pub span_diagnostic: Handler,
-    crate unstable_features: UnstableFeatures,
-    pub config: CrateConfig,
-    pub edition: Edition,
-    pub missing_fragment_specifiers: Lock<FxHashSet<Span>>,
-    /// Places where raw identifiers were used. This is used for feature-gating raw identifiers.
-    pub raw_identifier_spans: Lock<Vec<Span>>,
-    /// Used to determine and report recursive module inclusions.
-    pub(super) included_mod_stack: Lock<Vec<PathBuf>>,
-    source_map: Lrc<SourceMap>,
-    pub buffered_lints: Lock<Vec<BufferedEarlyLint>>,
-    /// Contains the spans of block expressions that could have been incomplete based on the
-    /// operation token that followed it, but that the parser cannot identify without further
-    /// analysis.
-    pub ambiguous_block_expr_parse: Lock<FxHashMap<Span, Span>>,
-    pub injected_crate_name: Once<Symbol>,
-    crate gated_spans: GatedSpans,
-}
-
-impl ParseSess {
-    pub fn new(file_path_mapping: FilePathMapping) -> Self {
-        let cm = Lrc::new(SourceMap::new(file_path_mapping));
-        let handler = Handler::with_tty_emitter(
-            ColorConfig::Auto,
-            true,
-            None,
-            Some(cm.clone()),
-        );
-        ParseSess::with_span_handler(handler, cm)
-    }
-
-    pub fn with_span_handler(handler: Handler, source_map: Lrc<SourceMap>) -> Self {
-        Self {
-            span_diagnostic: handler,
-            unstable_features: UnstableFeatures::from_environment(),
-            config: FxHashSet::default(),
-            edition: ExpnId::root().expn_data().edition,
-            missing_fragment_specifiers: Lock::new(FxHashSet::default()),
-            raw_identifier_spans: Lock::new(Vec::new()),
-            included_mod_stack: Lock::new(vec![]),
-            source_map,
-            buffered_lints: Lock::new(vec![]),
-            ambiguous_block_expr_parse: Lock::new(FxHashMap::default()),
-            injected_crate_name: Once::new(),
-            gated_spans: GatedSpans::default(),
-        }
-    }
-
-    #[inline]
-    pub fn source_map(&self) -> &SourceMap {
-        &self.source_map
-    }
-
-    pub fn buffer_lint(
-        &self,
-        lint_id: BufferedEarlyLintId,
-        span: impl Into<MultiSpan>,
-        id: NodeId,
-        msg: &str,
-    ) {
-        self.buffered_lints.with_lock(|buffered_lints| {
-            buffered_lints.push(BufferedEarlyLint{
-                span: span.into(),
-                id,
-                msg: msg.into(),
-                lint_id,
-            });
-        });
-    }
-
-    /// Extend an error with a suggestion to wrap an expression with parentheses to allow the
-    /// parser to continue parsing the following operation as part of the same expression.
-    pub fn expr_parentheses_needed(
-        &self,
-        err: &mut DiagnosticBuilder<'_>,
-        span: Span,
-        alt_snippet: Option<String>,
-    ) {
-        if let Some(snippet) = self.source_map().span_to_snippet(span).ok().or(alt_snippet) {
-            err.span_suggestion(
-                span,
-                "parentheses are required to parse this as an expression",
-                format!("({})", snippet),
-                Applicability::MachineApplicable,
-            );
-        }
-    }
-}