Finish pretty printer for blocks

src/org/org_types.nim

@@ -85,7 +85,9 @@ proc `$`*(x: OrgInlineBlock): string =
     """
 )"""
 
-## Block
+## OrgBlock
+## --------
+
 type
   orgBlockKind* = enum
     orgHeading
@@ -100,7 +102,7 @@ type
       headlineContent*: seq[OrgInlineBlock]
       headlineChildrenText*: string
 
-proc `$`*(x: OrgBlock, indent = 0): string =
+func pprint*(x: OrgBlock, indent = 0): string =
   let fieldIndent = indent + INDENT_SIZE
   let fields = @[
     ("kind", $x.kind, true),
@@ -119,14 +121,51 @@ proc `$`*(x: OrgBlock, indent = 0): string =
   ]
   .join("\n")
 
+func `$`*(x: OrgBlock): string = pprint(x)
+
+func pprint*(xs: seq[OrgBlock], indent = 0): string =
+  let fieldIndent = indent + INDENT_SIZE
+  @[
+    "@[",
+    xs
+    .mapIt(it.pprint())
+    .join(",\n")
+    .indent(fieldIndent),
+    "]",
+  ]
+  .join("\n")
+
+func `$`*(xs: seq[OrgBlock]): string = pprint(xs)
+
+## OrgDocuemnt
+## -----------
+
 type
   OrgDocument* = ref object
     children*: seq[OrgBlock]
 
-proc `$`*(x: OrgDocument): string =
+func pprint*(x: OrgDocument, indent = 0): string =
-  &"""OrgDocument(
+  let fieldIndent = indent + INDENT_SIZE
-  children: {x.children}
+
-)"""
+  let fields = @[
+    ("children", $x.children, true),
+  ]
+  .stringifyFields()
+
+  @[
+    "OrgDocument(",
+    fields.indent(fieldIndent),
+    ")",
+  ]
+  .join("\n")
+
+func `$`*(xs: OrgDocument): string = pprint(xs)
 
 when isMainModule:
-  echo OrgBlock(kind: orgHeading)
+  echo OrgDocument(
+    children: @[
+      OrgBlock(kind: orgHeading),
+      OrgBlock(kind: orgHeading),
+      OrgBlock(kind: orgHeading),
+    ]
+  )