fix: Include exercises folder in the project structure behind a feature (rust-lang#917)

closes rust-lang#859
closes rust-lang#913
closes rust-lang#942

Author: x-hgg-x

Cargo.toml

@@ -11,7 +11,7 @@ console = "0.7.7"
 notify = "4.0.15"
 toml = "0.4.10"
 regex = "1.1.6"
-serde = {version = "1.0.10", features = ["derive"]}
+serde = { version = "1.0.10", features = ["derive"] }
 
 [[bin]]
 name = "rustlings"
@@ -21,3 +21,6 @@ path = "src/main.rs"
 assert_cmd = "0.11.0"
 predicates = "1.0.1"
 glob = "0.3.0"
+
+[features]
+exercises = []

exercises/advanced_errors/mod.rs

@@ -0,0 +1,2 @@
+mod advanced_errs1;
+mod advanced_errs2;

exercises/clippy/mod.rs

@@ -0,0 +1,2 @@
+mod clippy1;
+mod clippy2;

exercises/collections/mod.rs

@@ -0,0 +1,4 @@
+mod hashmap1;
+mod hashmap2;
+mod vec1;
+mod vec2;

exercises/conversions/mod.rs

@@ -0,0 +1,5 @@
+mod as_ref_mut;
+mod from_into;
+mod from_str;
+mod try_from_into;
+mod using_as;

exercises/enums/mod.rs

@@ -0,0 +1,3 @@
+mod enums1;
+mod enums2;
+mod enums3;

exercises/error_handling/mod.rs

@@ -0,0 +1,6 @@
+mod errors1;
+mod errors2;
+mod errors3;
+mod errors4;
+mod errors5;
+mod errors6;

exercises/functions/mod.rs

@@ -0,0 +1,5 @@
+mod functions1;
+mod functions2;
+mod functions3;
+mod functions4;
+mod functions5;

exercises/generics/mod.rs

@@ -0,0 +1,3 @@
+mod generics1;
+mod generics2;
+mod generics3;

exercises/if/mod.rs

@@ -0,0 +1,2 @@
+mod if1;
+mod if2;

exercises/intro/mod.rs

@@ -0,0 +1,2 @@
+mod intro1;
+mod intro2;

exercises/macros/mod.rs

@@ -0,0 +1,4 @@
+mod macros1;
+mod macros2;
+mod macros3;
+mod macros4;

exercises/mod.rs

@@ -0,0 +1,26 @@
+mod advanced_errors;
+mod clippy;
+mod collections;
+mod conversions;
+mod enums;
+mod error_handling;
+mod functions;
+mod generics;
+mod r#if;
+mod intro;
+mod macros;
+mod modules;
+mod move_semantics;
+mod option;
+mod primitive_types;
+mod quiz1;
+mod quiz2;
+mod quiz3;
+mod quiz4;
+mod standard_library_types;
+mod strings;
+mod structs;
+mod tests;
+mod threads;
+mod traits;
+mod variables;

exercises/modules/mod.rs

@@ -0,0 +1,3 @@
+mod modules1;
+mod modules2;
+mod modules3;

exercises/move_semantics/mod.rs

@@ -0,0 +1,5 @@
+mod move_semantics1;
+mod move_semantics2;
+mod move_semantics3;
+mod move_semantics4;
+mod move_semantics5;

exercises/option/mod.rs

@@ -0,0 +1,3 @@
+mod option1;
+mod option2;
+mod option3;

exercises/primitive_types/mod.rs

@@ -0,0 +1,6 @@
+mod primitive_types1;
+mod primitive_types2;
+mod primitive_types3;
+mod primitive_types4;
+mod primitive_types5;
+mod primitive_types6;

exercises/standard_library_types/mod.rs

@@ -0,0 +1,7 @@
+mod arc1;
+mod box1;
+mod iterators1;
+mod iterators2;
+mod iterators3;
+mod iterators4;
+mod iterators5;

exercises/strings/mod.rs

@@ -0,0 +1,2 @@
+mod strings1;
+mod strings2;

exercises/structs/mod.rs

@@ -0,0 +1,3 @@
+mod structs1;
+mod structs2;
+mod structs3;

exercises/tests/mod.rs

@@ -0,0 +1,3 @@
+mod tests1;
+mod tests2;
+mod tests3;

exercises/threads/mod.rs

@@ -0,0 +1 @@
+mod threads1;

exercises/traits/mod.rs

@@ -0,0 +1,2 @@
+mod traits1;
+mod traits2;

exercises/variables/mod.rs

@@ -0,0 +1,6 @@
+mod variables1;
+mod variables2;
+mod variables3;
+mod variables4;
+mod variables5;
+mod variables6;

src/lib.rs

@@ -0,0 +1,3 @@
+#[cfg(feature = "exercises")]
+#[path = "../exercises/mod.rs"]
+mod exercises;