Add --no-source option flag to rustdoc

Author: GuillaumeGomez

src/librustdoc/config.rs

@@ -268,6 +268,8 @@ crate struct RenderOptions {
     crate generate_redirect_map: bool,
     crate unstable_features: rustc_feature::UnstableFeatures,
     crate emit: Vec<EmitType>,
+    /// Whether the source code should be rendered as HTML.
+    pub no_source: bool,
 }
 
 #[derive(Copy, Clone, Debug, PartialEq, Eq)]
@@ -622,6 +624,7 @@ impl Options {
         let document_hidden = matches.opt_present("document-hidden-items");
         let run_check = matches.opt_present("check");
         let generate_redirect_map = matches.opt_present("generate-redirect-map");
+        let no_source = matches.opt_present("no-source");
 
         let (lint_opts, describe_lints, lint_cap) = get_cmd_lint_options(matches, error_format);
 
@@ -684,6 +687,7 @@ impl Options {
                     crate_name.as_deref(),
                 ),
                 emit,
+                no_source,
             },
             crate_name,
             output_format,

src/librustdoc/html/render/context.rs

@@ -331,7 +331,7 @@ impl<'tcx> FormatRenderer<'tcx> for Context<'tcx> {
             generate_search_filter,
         };
         let mut issue_tracker_base_url = None;
-        let mut include_sources = true;
+        let mut include_sources = !options.no_source;
 
         // Crawl the crate attributes looking for attributes which control how we're
         // going to emit HTML

src/librustdoc/lib.rs

@@ -533,6 +533,12 @@ fn opts() -> Vec<RustcOptGroup> {
                 "emit",
                 "Comma separated list of types of output for rustdoc to emit",
                 "[unversioned-shared-resources,toolchain-shared-resources,invocation-specific]",
+        stable("no-source", |o| {
+            o.optflag(
+                "",
+                "no-source",
+                "Prevent source code generation in HTML output format generation. \
+                 This is the same as using the `#![doc(html_no_source)]` attribute.",
             )
         }),
     ]