Add support for serializing trees as JSON

This adds support for serializing the mdast syntax tree as JSON,
with serde, through a feature.

Closes GH-10.
Related-to GH-30.
Closes GH-37.

1 files changed, 14 insertions, 10 deletions

diff --git a/src/to_mdast.rs b/src/to_mdast.rs
index e76bad5..4659d7b 100644
--- a/src/to_mdast.rs
+++ b/src/to_mdast.rs
@@ -2,11 +2,12 @@
 
 use crate::event::{Event, Kind, Name, Point as EventPoint};
 use crate::mdast::{
-    AttributeContent, AttributeValue, BlockQuote, Break, Code, Definition, Delete, Emphasis,
-    FootnoteDefinition, FootnoteReference, Heading, Html, Image, ImageReference, InlineCode,
-    InlineMath, Link, LinkReference, List, ListItem, Math, MdxFlowExpression, MdxJsxAttribute,
-    MdxJsxFlowElement, MdxJsxTextElement, MdxTextExpression, MdxjsEsm, Node, Paragraph,
-    ReferenceKind, Root, Strong, Table, TableCell, TableRow, Text, ThematicBreak, Toml, Yaml,
+    AttributeContent, AttributeValue, AttributeValueExpression, BlockQuote, Break, Code,
+    Definition, Delete, Emphasis, FootnoteDefinition, FootnoteReference, Heading, Html, Image,
+    ImageReference, InlineCode, InlineMath, Link, LinkReference, List, ListItem, Math,
+    MdxFlowExpression, MdxJsxAttribute, MdxJsxFlowElement, MdxJsxTextElement, MdxTextExpression,
+    MdxjsEsm, Node, Paragraph, ReferenceKind, Root, Strong, Table, TableCell, TableRow, Text,
+    ThematicBreak, Toml, Yaml,
 };
 use crate::unist::{Point, Position};
 use crate::util::{
@@ -14,7 +15,7 @@ use crate::util::{
         decode as decode_character_reference, parse as parse_character_reference,
     },
     infer::{gfm_table_align, list_item_loose, list_loose},
-    mdx_collect::collect,
+    mdx_collect::{collect, Result as CollectResult},
     normalize_identifier::normalize_identifier,
     slice::{Position as SlicePosition, Slice},
 };
@@ -834,7 +835,7 @@ fn on_enter_mdx_jsx_tag_attribute(context: &mut CompileContext) -> Result<(), St
 fn on_enter_mdx_jsx_tag_attribute_expression(context: &mut CompileContext) -> Result<(), String> {
     on_enter_mdx_jsx_tag_any_attribute(context)?;
 
-    let result = collect(
+    let CollectResult { value, stops } = collect(
         context.events,
         context.bytes,
         context.index,
@@ -846,7 +847,7 @@ fn on_enter_mdx_jsx_tag_attribute_expression(context: &mut CompileContext) -> Re
         .as_mut()
         .expect("expected tag")
         .attributes
-        .push(AttributeContent::Expression(result.value, result.stops));
+        .push(AttributeContent::Expression { value, stops });
 
     context.buffer();
 
@@ -855,7 +856,7 @@ fn on_enter_mdx_jsx_tag_attribute_expression(context: &mut CompileContext) -> Re
 
 /// Handle [`Enter`][Kind::Enter]:[`MdxJsxTagAttributeValueExpression`][Name::MdxJsxTagAttributeValueExpression].
 fn on_enter_mdx_jsx_tag_attribute_value_expression(context: &mut CompileContext) {
-    let result = collect(
+    let CollectResult { value, stops } = collect(
         context.events,
         context.bytes,
         context.index,
@@ -870,7 +871,10 @@ fn on_enter_mdx_jsx_tag_attribute_value_expression(context: &mut CompileContext)
         .attributes
         .last_mut()
     {
-        node.value = Some(AttributeValue::Expression(result.value, result.stops));
+        node.value = Some(AttributeValue::Expression(AttributeValueExpression {
+            value,
+            stops,
+        }));
     } else {
         unreachable!("expected property")
     }