bjoernager/rust
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use silent emitter for rustdoc highlighting pass

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This commit is contained in:
Andy Russell 2019-11-03 12:04:01 -05:00
parent b43a682259
commit d06a4ded13
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GPG key ID: BE2221033EDBC374
5 changed files with 19 additions and 79 deletions
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14
src/librustc_interface/interface.rs
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@ -17,10 +17,9 @@ use std::sync::{Arc, Mutex};
use syntax::{self, parse};
use syntax::ast::{self, MetaItemKind};
use syntax::parse::token;
use syntax::source_map::{FileName, FilePathMapping, FileLoader, SourceMap};
use syntax::source_map::{FileName, FileLoader, SourceMap};
use syntax::sess::ParseSess;
use syntax_pos::edition;
use rustc_errors::{Diagnostic, emitter::Emitter, Handler, SourceMapperDyn};
pub type Result<T> = result::Result<T, ErrorReported>;
@ -63,18 +62,9 @@ impl Compiler {
/// Converts strings provided as `--cfg [cfgspec]` into a `crate_cfg`.
pub fn parse_cfgspecs(cfgspecs: Vec<String>) -> FxHashSet<(String, Option<String>)> {
struct NullEmitter;
impl Emitter for NullEmitter {
fn emit_diagnostic(&mut self, _: &Diagnostic) {}
fn source_map(&self) -> Option<&Lrc<SourceMapperDyn>> { None }
}
syntax::with_default_globals(move || {
let cfg = cfgspecs.into_iter().map(|s| {
let cm = Lrc::new(SourceMap::new(FilePathMapping::empty()));
let handler = Handler::with_emitter(false, None, Box::new(NullEmitter));
let sess = ParseSess::with_span_handler(handler, cm);
let sess = ParseSess::with_silent_emitter();
let filename = FileName::cfg_spec_source_code(&s);
let mut parser = parse::new_parser_from_source_str(&sess, filename, s.to_string());