Fixes #24: representation extensions; provides a plotting extension: scatterplots, line plots, decision boundaries etc.

README.md

@@ -12,6 +12,8 @@ including:
 
 See https://c-cube.github.io/printbox/
 
+See the [test/](test/) and [examples/](examples/) directories for illustrations of potential usage.
+
 ## License
 
 BSD-2-clauses

dune-project

@@ -47,3 +47,17 @@ Printbox allows to print nested boxes, lists, arrays, tables in several formats"
            (printbox-html (and (= :version)))
            (odoc :with-test)
            (mdx (and (>= 1.4) :with-test))))
+
+(package
+  (name printbox-ext-plot)
+(synopsis "Printbox extension for plotting")
+(description "
+Extends Printbox with the ability to print scatter plots, line plots, decision boundaries.
+Printbox allows to print nested boxes, lists, arrays, tables in several formats")
+  (depends (printbox (= :version))
+           (printbox-text (and (= :version)))
+           (printbox-html (and (= :version)))
+           (printbox-md (and (= :version)))
+           (tyxml (>= 4.3))
+           (odoc :with-test)
+           (mdx (and (>= 1.4) :with-test))))

printbox-ext-plot.opam

@@ -0,0 +1,39 @@
+# This file is generated by dune, edit dune-project instead
+opam-version: "2.0"
+version: "0.11"
+synopsis: "Printbox extension for plotting"
+description: """
+
+Extends Printbox with the ability to print scatter plots, line plots, decision boundaries.
+Printbox allows to print nested boxes, lists, arrays, tables in several formats"""
+maintainer: ["c-cube" "lukstafi"]
+authors: ["Simon Cruanes" "Guillaume Bury" "lukstafi"]
+license: "BSD-2-Clause"
+homepage: "https://github.com/c-cube/printbox"
+bug-reports: "https://github.com/c-cube/printbox/issues"
+depends: [
+  "dune" {>= "3.0"}
+  "printbox" {= version}
+  "printbox-text" {= version}
+  "printbox-html" {= version}
+  "printbox-md" {= version}
+  "tyxml" {>= "4.3"}
+  "odoc" {with-test}
+  "mdx" {>= "1.4" & with-test}
+  "odoc" {with-doc}
+]
+build: [
+  ["dune" "subst"] {dev}
+  [
+    "dune"
+    "build"
+    "-p"
+    name
+    "-j"
+    jobs
+    "@install"
+    "@runtest" {with-test}
+    "@doc" {with-doc}
+  ]
+]
+dev-repo: "git+https://github.com/c-cube/printbox.git"

src/PrintBox.ml

@@ -38,6 +38,8 @@ module Style = struct
   let fg_color c : t = set_fg_color c default
 end
 
+type ext = ..
+
 type view =
   | Empty
   | Text of {
@@ -64,6 +66,10 @@ type view =
       id: string;
       inner: t;
     }
+  | Ext of {
+      key: string;
+      ext: ext;
+    }
 
 and t = view
 
@@ -203,6 +209,7 @@ let mk_tree ?indent f root =
 
 let link ~uri inner : t = Link { uri; inner }
 let anchor ~id inner : t = Anchor { id; inner }
+let extension ~key ext = Ext { key; ext }
 
 (** {2 Simple Structural Interface} *)
 
@@ -219,6 +226,7 @@ module Simple = struct
     | `Table of t array array
     | `Tree of t * t list
     ]
+  (** The simple interface does not support extensions. *)
 
   let rec to_box = function
     | `Empty -> empty

src/PrintBox.mli

@@ -103,6 +103,12 @@ type t
 (** Main type for a document composed of nested boxes.
     @since 0.2 the type [t] is opaque *)
 
+type ext = ..
+(** Extensions of the representation.
+
+    @since NEXT_RELEASE
+*)
+
 (** The type [view] can be used to observe the inside of the box,
     now that [t] is opaque.
 
@@ -137,6 +143,10 @@ type view = private
       id: string;
       inner: t;
     }
+  | Ext of {
+      key: string;
+      ext: ext;
+    }
 
 val view : t -> view
 (** Observe the content of the box.
@@ -317,6 +327,12 @@ val anchor : id:string -> t -> t
     @since 0.11
 *)
 
+val extension : key:string -> ext -> t
+(** [extension ~key ext] embeds an extended representation [ext] as a box. [ext] must be
+    recognized by the used backends as an extension registered under [key].
+    @since NEXT_RELEASE
+*)
+
 (** {2 Styling combinators} *)
 
 val line_with_style : Style.t -> string -> t