Make header a vec of modifiers, make FunctionPointer consistent with Function and Method.

src/rustdoc-json-types/lib.rs

@@ -281,11 +281,20 @@ pub enum StructType {
     Unit,
 }
 
+#[non_exhaustive]
+#[serde(rename_all = "snake_case")]
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
+pub enum Modifiers {
+    Const,
+    Unsafe,
+    Async,
+}
+
 #[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
 pub struct Function {
     pub decl: FnDecl,
     pub generics: Generics,
-    pub header: String,
+    pub header: Vec<Modifiers>,
     pub abi: String,
 }
 
@@ -293,7 +302,7 @@ pub struct Function {
 pub struct Method {
     pub decl: FnDecl,
     pub generics: Generics,
-    pub header: String,
+    pub header: Vec<Modifiers>,
     pub abi: String,
     pub has_body: bool,
 }
@@ -404,9 +413,9 @@ pub enum Type {
 
 #[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
 pub struct FunctionPointer {
-    pub is_unsafe: bool,
-    pub generic_params: Vec<GenericParamDef>,
     pub decl: FnDecl,
+    pub generic_params: Vec<GenericParamDef>,
+    pub header: Vec<Modifiers>,
     pub abi: String,
 }