Remove support for -Zast-json and -Zast-json-noexpand

Author: bjorn3

compiler/rustc_ast/src/ast.rs

@@ -41,9 +41,6 @@ use std::convert::TryFrom;
 use std::fmt;
 use std::mem;
 
-#[cfg(test)]
-mod tests;
-
 /// A "Label" is an identifier of some point in sources,
 /// e.g. in the following code:
 ///

compiler/rustc_ast/src/ast/tests.rs

@@ -343,10 +343,7 @@ fn run_compiler(
                 return early_exit();
             }
 
-            if sess.opts.debugging_opts.parse_only
-                || sess.opts.debugging_opts.show_span.is_some()
-                || sess.opts.debugging_opts.ast_json_noexpand
-            {
+            if sess.opts.debugging_opts.parse_only || sess.opts.debugging_opts.show_span.is_some() {
                 return early_exit();
             }
 
@@ -375,7 +372,7 @@ fn run_compiler(
 
             queries.global_ctxt()?;
 
-            if sess.opts.debugging_opts.no_analysis || sess.opts.debugging_opts.ast_json {
+            if sess.opts.debugging_opts.no_analysis {
                 return early_exit();
             }
 

compiler/rustc_driver/src/lib.rs

@@ -27,7 +27,6 @@ use rustc_passes::{self, hir_stats, layout_test};
 use rustc_plugin_impl as plugin;
 use rustc_query_impl::{OnDiskCache, Queries as TcxQueries};
 use rustc_resolve::{Resolver, ResolverArenas};
-use rustc_serialize::json;
 use rustc_session::config::{CrateType, Input, OutputFilenames, OutputType};
 use rustc_session::cstore::{MetadataLoader, MetadataLoaderDyn};
 use rustc_session::output::{filename_for_input, filename_for_metadata};
@@ -59,10 +58,6 @@ pub fn parse<'a>(sess: &'a Session, input: &Input) -> PResult<'a, ast::Crate> {
         }
     })?;
 
-    if sess.opts.debugging_opts.ast_json_noexpand {
-        println!("{}", json::as_json(&krate));
-    }
-
     if sess.opts.debugging_opts.input_stats {
         eprintln!("Lines of code:             {}", sess.source_map().count_lines());
         eprintln!("Pre-expansion node count:  {}", count_nodes(&krate));
@@ -423,10 +418,6 @@ pub fn configure_and_expand(
         hir_stats::print_ast_stats(&krate, "POST EXPANSION AST STATS");
     }
 
-    if sess.opts.debugging_opts.ast_json {
-        println!("{}", json::as_json(&krate));
-    }
-
     resolver.resolve_crate(&krate);
 
     // Needs to go *after* expansion to be able to check the results of macro expansion.

compiler/rustc_interface/src/passes.rs

@@ -644,8 +644,6 @@ fn test_debugging_options_tracking_hash() {
     // Make sure that changing an [UNTRACKED] option leaves the hash unchanged.
     // This list is in alphabetical order.
     untracked!(assert_incr_state, Some(String::from("loaded")));
-    untracked!(ast_json, true);
-    untracked!(ast_json_noexpand, true);
     untracked!(borrowck, String::from("other"));
     untracked!(deduplicate_diagnostics, false);
     untracked!(dep_tasks, true);

compiler/rustc_interface/src/tests.rs

@@ -1207,10 +1207,6 @@ options! {
     assert_incr_state: Option<String> = (None, parse_opt_string, [UNTRACKED],
         "assert that the incremental cache is in given state: \
          either `loaded` or `not-loaded`."),
-    ast_json: bool = (false, parse_bool, [UNTRACKED],
-        "print the AST as JSON and halt (default: no)"),
-    ast_json_noexpand: bool = (false, parse_bool, [UNTRACKED],
-        "print the pre-expansion AST as JSON and halt (default: no)"),
     binary_dep_depinfo: bool = (false, parse_bool, [TRACKED],
         "include artifacts (sysroot, crate dependencies) used during compilation in dep-info \
         (default: no)"),