fix: failed to keep block comment when turned off

Author: Boshen

README.md

@@ -23,7 +23,7 @@ fn main() {
         r#"
      {
          "name": /* full */ "John Doe",
-         "age": 43,
+         "age": 43, # hash line comment
          "phones": [
              "+44 1234567", // work phone
              "+44 2345678", // home phone

examples/example.rs

@@ -5,7 +5,7 @@ fn main() {
         r#"
      {
          "name": /* full */ "John Doe",
-         "age": 43,
+         "age": 43, # hash comment
          "phones": [
              "+44 1234567", // work phone
              "+44 2345678", // home phone

src/lib.rs

@@ -344,7 +344,9 @@ fn top(c: &mut u8, settings: CommentSettings) -> State {
     match *c {
         b'"' => InString,
         b'/' => {
-            *c = b' ';
+            if settings.block_comments || settings.slash_line_comments {
+                *c = b' ';
+            }
             InComment
         }
         b'#' if settings.hash_line_comments => {
@@ -507,6 +509,32 @@ mod tests {
         assert_eq!(err.kind(), ErrorKind::InvalidData);
     }
 
+    #[test]
+    fn keep_all() {
+        let original = String::from(
+            r#"
+     {
+         "name": /* full */ "John Doe",
+         "age": 43, # hash line comment
+         "phones": [
+             "+44 1234567", // work phone
+             "+44 2345678", // home phone
+         ], /** comment **/
+     }"#,
+        );
+        let mut changed = original.clone();
+        let _ = strip_comments_in_place(
+            &mut changed,
+            CommentSettings {
+                block_comments: false,
+                slash_line_comments: false,
+                hash_line_comments: false,
+                trailing_commas: false,
+            },
+        );
+        assert_eq!(original, changed);
+    }
+
     #[test]
     fn strip_in_place() {
         let mut json = String::from(r#"{/* Comment */"hi": /** abc */ "bye"}"#);

wasm/test/test.mjs

@@ -4,7 +4,7 @@ import { strip } from '../../npm/json_strip_comments_wasm.js';
 const s = `
 {
      "name": /* full */ "John Doe",
-     "age": 43,
+     "age": 43, # hash line comment
      "phones": [
          "+44 1234567", // work phone
          "+44 2345678", // home phone
@@ -31,4 +31,4 @@ const expected = `
     assert.deepStrictEqual(JSON.parse(stripped), JSON.parse(expected));
 });
 
-// assert.strictEqual(strip(s, { blockComments: false, slashLineComments: false, hashLineComments: false, trailingCommas: false }), s);
+assert.strictEqual(strip(s, { blockComments: false, slashLineComments: false, hashLineComments: false, trailingCommas: false }), s);