Add rustc Macro Expansion view (#2932)

Adds a new pane for producing the macro expansion of Rust code compiled with rustc.

1 files changed, 2 insertions, 0 deletions

diff --git a/lib/compilers/rust.js b/lib/compilers/rust.js
index d6be3b5c7..3072e8db4 100644
--- a/lib/compilers/rust.js
+++ b/lib/compilers/rust.js
@@ -39,6 +39,8 @@ export class RustCompiler extends BaseCompiler {
         this.compiler.supportsIntel = true;
         this.compiler.supportsIrView = true;
         this.compiler.supportsRustMirView = true;
+        // Macro expansion through -Zunpretty=expanded is only available for Nightly
+        this.compiler.supportsRustMacroExpView = info.name === 'nightly' || info.semver === 'nightly';
         this.compiler.irArg = ['--emit', 'llvm-ir'];
         this.linker = this.compilerProps('linker');
     }