Merge pull request 'Support for non-consecutive ranges' (#13) from rajayonin/rivet-typst:non-consecutive-ranges into dev

Reviewed-on: HEL/rivet-typst#13
Reviewed-by: Louis Heredero <louis@herdac.ch>

README.md

@@ -36,6 +36,6 @@ For more information, see the [manual](manual.pdf)
 To use this package, simply import `schema` from [rivet](https://typst.app/universe/package/rivet) and call `schema.load` to parse a schema description. Then use `schema.render` to render it, et voilà !
 ```typ
 #import "@preview/rivet:0.3.0": schema
-#let doc = schema.load("path/to/schema.yaml")
+#let doc = schema.load(yaml("path/to/schema.yaml"))
 #schema.render(doc)
 ```

src/renderer.typ

@@ -407,6 +407,11 @@
       indices.push(r.start)
       indices.push(r.end)
     }
+    // ensure first and last bits are included
+    if not indices.contains(0) { indices.insert(0, struct.start) }
+    if not indices.contains(struct.bits + struct.start - 1) {
+      indices.push(struct.bits + struct.start - 1)
+    }
   }
 
   for i in range(struct.bits) {
@@ -453,8 +458,9 @@
   let desc-y = bits-y + bit-h * 2
 
   // Names + simple descriptions
-  for range_ in ranges {
+  for (i, range_) in ranges.enumerate() {
     let start-i = to-real-i(if config.ltr-bits {range_.start} else {range_.end})
+    let end-i = to-real-i(if config.ltr-bits {range_.end} else {range_.start})
     let start-x = bits-x + start-i * bit-w
     let width = rng.bits(range_) * bit-w
 
@@ -465,6 +471,28 @@
     shapes += draw-line(border-col, (line-x, bits-y), (line-x, bits-y + bit-h))
     shapes += draw-text(range_.name, txt-col, name-x, name-y, fill: bg-col)
 
+    // paint end line only if needed
+    if (
+      start-i != 0
+        and end-i != struct.bits - 1
+        and ranges
+          .at(
+            i
+              + {
+                if config.ltr-bits and i < ranges.len() - 1 { 1 } else { -1 }
+              },
+          )
+          .end
+          != range_.start - 1
+    ) {
+      line-x += if config.ltr-bits { -width } else { width }
+      shapes += draw-line(
+        border-col,
+        (line-x, bits-y),
+        (line-x, bits-y + bit-h),
+      )
+    }
+    
     if range_.description != "" {
       let shapes_
       (shapes_, desc-x, desc-y) = draw-description(