Move EncodedMetadata to rustc_metadata.

compiler/rustc_metadata/src/lib.rs

@@ -30,5 +30,4 @@ pub mod creader;
 pub mod dynamic_lib;
 pub mod locator;
 
-pub use rmeta::encode_metadata;
-pub use rmeta::METADATA_HEADER;
+pub use rmeta::{encode_metadata, EncodedMetadata, METADATA_HEADER};

compiler/rustc_metadata/src/rmeta/encoder.rs

@@ -18,7 +18,7 @@ use rustc_hir::{AnonConst, GenericParamKind};
 use rustc_index::bit_set::GrowableBitSet;
 use rustc_index::vec::Idx;
 use rustc_middle::hir::map::Map;
-use rustc_middle::middle::cstore::{EncodedMetadata, ForeignModule, LinkagePreference, NativeLib};
+use rustc_middle::middle::cstore::{ForeignModule, LinkagePreference, NativeLib};
 use rustc_middle::middle::dependency_format::Linkage;
 use rustc_middle::middle::exported_symbols::{
     metadata_symbol_name, ExportedSymbol, SymbolExportLevel,
@@ -2101,6 +2101,23 @@ fn prefetch_mir(tcx: TyCtxt<'_>) {
 // will allow us to slice the metadata to the precise length that we just
 // generated regardless of trailing bytes that end up in it.
 
+#[derive(Encodable, Decodable)]
+pub struct EncodedMetadata {
+    raw_data: Vec<u8>,
+}
+
+impl EncodedMetadata {
+    #[inline]
+    pub fn new() -> EncodedMetadata {
+        EncodedMetadata { raw_data: Vec::new() }
+    }
+
+    #[inline]
+    pub fn raw_data(&self) -> &[u8] {
+        &self.raw_data[..]
+    }
+}
+
 pub fn encode_metadata(tcx: TyCtxt<'_>) -> EncodedMetadata {
     let _prof_timer = tcx.prof.verbose_generic_activity("generate_crate_metadata");
 

compiler/rustc_metadata/src/rmeta/mod.rs

@@ -32,8 +32,8 @@ use std::num::NonZeroUsize;
 use decoder::DecodeContext;
 pub use decoder::{provide, provide_extern};
 crate use decoder::{CrateMetadata, CrateNumMap, MetadataBlob};
-pub use encoder::encode_metadata;
 use encoder::EncodeContext;
+pub use encoder::{encode_metadata, EncodedMetadata};
 use rustc_span::hygiene::SyntaxContextData;
 
 mod decoder;