Dump results of analysis phase as CSV (DXR support in Rust)

src/librustc/driver/config.rs

@@ -172,7 +172,8 @@ debugging_opts!(
         LTO,
         AST_JSON,
         AST_JSON_NOEXPAND,
-        LS
+        LS,
+        SAVE_ANALYSIS
     ]
     0
 )
@@ -206,7 +207,9 @@ pub fn debugging_opts_map() -> Vec<(&'static str, &'static str, u64)> {
      ("lto", "Perform LLVM link-time optimizations", LTO),
      ("ast-json", "Print the AST as JSON and halt", AST_JSON),
      ("ast-json-noexpand", "Print the pre-expansion AST as JSON and halt", AST_JSON_NOEXPAND),
-     ("ls", "List the symbols defined by a library crate", LS))
+     ("ls", "List the symbols defined by a library crate", LS),
+     ("save-analysis", "Write syntax and type analysis information \
+                        in addition to normal output", SAVE_ANALYSIS))
 }
 
 /// Declare a macro that will define all CodegenOptions fields and parsers all

src/librustc/driver/driver.rs

@@ -87,6 +87,7 @@ pub fn compile_input(sess: Session,
         if stop_after_phase_2(&sess) { return; }
 
         let analysis = phase_3_run_analysis_passes(sess, &expanded_crate, ast_map);
+        phase_save_analysis(&analysis.ty_cx.sess, &expanded_crate, &analysis, outdir);
         if stop_after_phase_3(&analysis.ty_cx.sess) { return; }
         let (tcx, trans) = phase_4_translate_to_llvm(expanded_crate,
                                                      analysis, &outputs);
@@ -370,6 +371,17 @@ pub fn phase_3_run_analysis_passes(sess: Session,
     }
 }
 
+pub fn phase_save_analysis(sess: &Session,
+                           krate: &ast::Crate,
+                           analysis: &CrateAnalysis,
+                           odir: &Option<Path>) {
+    if (sess.opts.debugging_opts & config::SAVE_ANALYSIS) == 0 {
+        return;
+    }
+    time(sess.time_passes(), "save analysis", krate, |krate|
+         middle::save::process_crate(sess, krate, analysis, odir));
+}
+
 pub struct CrateTranslation {
     pub context: ContextRef,
     pub module: ModuleRef,

src/librustc/driver/session.rs

@@ -28,6 +28,7 @@ use syntax::{ast, codemap};
 use std::os;
 use std::cell::{Cell, RefCell};
 
+
 pub struct Session {
     pub targ_cfg: config::Config,
     pub opts: config::Options,

src/librustc/lib.rs

@@ -84,6 +84,7 @@ pub mod middle {
     pub mod expr_use_visitor;
     pub mod dependency_format;
     pub mod weak_lang_items;
+    pub mod save;
 }
 
 pub mod front {