internal: allow overriding proc macro server in analysis-stats

Author: davidbarsky

src/tools/rust-analyzer/crates/rust-analyzer/src/cli/analysis_stats.rs

@@ -81,7 +81,13 @@ impl flags::AnalysisStats {
 with_proc_macro_server:ifself.disable_proc_macros{
 ProcMacroServerChoice::None
 }else{
-ProcMacroServerChoice::Sysroot
+matchself.proc_macro_srv{
+Some(ref path) => {
+let path = vfs::AbsPathBuf::assert_utf8(path.to_owned());
+ProcMacroServerChoice::Explicit(path)
+}
+None => ProcMacroServerChoice::Sysroot,
+}
 },
 prefill_caches:false,
 };

src/tools/rust-analyzer/crates/rust-analyzer/src/cli/flags.rs

@@ -76,6 +76,8 @@ xflags::xflags! {
  optional --disable-build-scripts
 /// Don't use expand proc macros.
  optional --disable-proc-macros
+/// Run the proc-macro-srv binary at the specified path.
+ optional --proc-macro-srv path:PathBuf
 /// Skip body lowering.
  optional --skip-lowering
 /// Skip type inference.
@@ -120,7 +122,7 @@ xflags::xflags! {
  optional --disable-build-scripts
 /// Don't use expand proc macros.
  optional --disable-proc-macros
-/// Run a custom proc-macro-srv binary.
+/// Run the proc-macro-srv binary at the specified path.
  optional --proc-macro-srv path:PathBuf
 }
 
@@ -133,7 +135,7 @@ xflags::xflags! {
  optional --disable-build-scripts
 /// Don't use expand proc macros.
  optional --disable-proc-macros
-/// Run a custom proc-macro-srv binary.
+/// Run the proc-macro-srv binary at the specified path.
  optional --proc-macro-srv path:PathBuf
 }
 
@@ -233,6 +235,7 @@ pub struct AnalysisStats {
 pubno_sysroot:bool,
 pubdisable_build_scripts:bool,
 pubdisable_proc_macros:bool,
+pubproc_macro_srv:Option<PathBuf>,
 pubskip_lowering:bool,
 pubskip_inference:bool,
 pubskip_mir_stats:bool,