better serialization

Author: flying-sheep

document_tree/src/attribute_types.rs

@@ -97,6 +97,7 @@ pub struct TableGroupCols(pub usize);
 // no eq for f64
 #[derive(Clone, Debug, PartialEq, Serialize, JsonSchema)]
 #[serde(tag = "unit", content = "value")]
+#[schemars(_unstable_ref_variants)]
 pub enum Measure {
     // https://docutils.sourceforge.net/docs/ref/rst/restructuredtext.html#length-units
     Em(f64),

document_tree/src/element_categories.rs

@@ -53,6 +53,7 @@ macro_rules! synonymous_enum {
     } ) => {
         #[derive(Clone, PartialEq, Serialize, JsonSchema)]
         #[serde(tag = "type")]
+        #[schemars(_unstable_ref_variants)]
         pub enum $name { $(
             $(#[$attr])?
             $entry(Box<$entry>),

document_tree/src/elements.rs

@@ -29,13 +29,13 @@ pub trait Element {
 
 #[derive(Clone, Debug, Default, PartialEq, Serialize, JsonSchema)]
 pub struct CommonAttributes {
-    #[serde(skip_serializing_if = "CanBeEmpty::is_empty")]
+    #[serde(default, skip_serializing_if = "CanBeEmpty::is_empty")]
     ids: Vec<ID>,
-    #[serde(skip_serializing_if = "CanBeEmpty::is_empty")]
+    #[serde(default, skip_serializing_if = "CanBeEmpty::is_empty")]
     names: Vec<NameToken>,
-    #[serde(skip_serializing_if = "CanBeEmpty::is_empty")]
+    #[serde(default, skip_serializing_if = "CanBeEmpty::is_empty")]
     source: Option<PathBuf>,
-    #[serde(skip_serializing_if = "CanBeEmpty::is_empty")]
+    #[serde(default, skip_serializing_if = "CanBeEmpty::is_empty")]
     classes: Vec<String>,
     //TODO: dupnames
 }
@@ -182,6 +182,7 @@ macro_rules! impl_elem {
             pub struct $name {
                 #[serde(flatten)]
                 common: CommonAttributes,
+                #[serde(default, skip_serializing_if = "CanBeEmpty::is_empty")]
                 children: Vec<$childtype>,
             }
         );
@@ -196,6 +197,7 @@ macro_rules! impl_elem {
                 common: CommonAttributes,
                 #[serde(flatten)]
                 extra: extra_attributes::$name,
+                #[serde(default, skip_serializing_if = "CanBeEmpty::is_empty")]
                 children: Vec<$childtype>,
             }
         );