From d84a515a55d1cc26e41462ff82c6d24df051dbba Mon Sep 17 00:00:00 2001
From: Jeremy Penner <jeremy@sporktania.com>
Date: Sat, 3 Apr 2021 22:35:50 -0400
Subject: [PATCH] repl: table inspector

---
 editor/repl.fnl     | 52 +++++++++++++++++++++++++++++++++------------
 editor/replview.fnl |  1 -
 lib/util.fnl        |  2 +-
 todo.txt            |  6 ++++--
 4 files changed, 43 insertions(+), 18 deletions(-)

diff --git a/editor/repl.fnl b/editor/repl.fnl
index bc97046..8e79b1f 100644
--- a/editor/repl.fnl
+++ b/editor/repl.fnl
@@ -2,41 +2,65 @@
 (local fennel (require :lib.fennel))
 (local style (require :core.style))
 (local lume (require :lib.lume))
+(local {: textbutton} (util.require :editor.imstate))
 
 (local repl (util.hot-table ...))
 
 (fn repl.text-height [text ?font]
-  (let [font (or ?font style.font)
+  (let [font (or ?font style.code_font)
         (_ newlines) (text:gsub "\n" "\n")]
     (* (font:get_height) (+ newlines 1))))
 
-(fn repl.inspect-table [tbl view x y-start w]
-  (var y y-start)
+(fn get-state [tbl k depth state]
+  (when (= nil (. state k))
+    (tset state k {:collapsed (= (type (. tbl k)) :table) :children {}}))
+  (. state k))
+
+(fn repl.inspect-table [tbl view x y w depth state]
+  (local font style.code_font)
   (var h 0)
   (each [k v (pairs tbl)]
-    (let [kstr (fv k)
-          wk 1]
-          nil))
-  )
-(fn repl.inspect [v view x y w]
-  (renderer.draw_text style.font (fv v) x y style.text)
+    (let [kstate (get-state tbl k depth state)
+          kstr (fv k)
+          wk (font:get_width kstr)
+          xoffset (+ wk style.padding.x)
+          toggle-collapse (textbutton view kstr x (+ y h))
+          hv (if kstate.collapsed
+                (do (renderer.draw_text font "..." (+ x xoffset) (+ y h) style.syntax.comment) (font:get_height))
+                (repl.inspect v view (+ x xoffset) (+ y h) (- w xoffset) (+ depth 1) kstate.children))]
+      (when toggle-collapse (tset (. state k) :collapsed (not kstate.collapsed)))
+      (set h (+ h hv style.padding.y))))
+  h)
+
+(fn repl.inspect-default [v view x y w depth state]
+  (renderer.draw_text style.code_font (fv v) x y style.text)
   (repl.text-height (fv v)))
 
-(fn repl.inspector [{: vals} view x y]
+(fn repl.inspect [v view x y w depth state]
+  (if (> w 0)
+    (match (type v)
+      :table (repl.inspect-table v view x y w depth state)
+      _ (repl.inspect-default v view x y w depth state))
+    0))
+
+(fn repl.inspector [{: vals : state} view x y]
   (var h 0)
   (each [i v (ipairs vals)]
-    (set h (+ h (repl.inspect v view x (+ y h) view.size.x))))
+    (set h (+ h (repl.inspect v view x (+ y h) view.size.x 1 state))))
   (+ h style.padding.y))
 
 (fn repl.notify [listeners line]
   (each [_ listener (ipairs listeners)]
     (listener:append line)))
 
-(fn repl.run [{: listeners}]
+(fn repl.mk-result [vals]
   (local inspector #(repl.inspector $...))
+  {:draw inspector : vals :state {}})
+
+(fn repl.run [{: listeners}]
   (fennel.repl {:readChunk coroutine.yield
-                :onValues #(repl.notify listeners {:draw inspector :vals $1})
-                :onError (fn [errType err luaSource] (repl.notify listeners {:draw inspector :vals [err]}))
+                :onValues #(repl.notify listeners (repl.mk-result $1))
+                :onError (fn [errType err luaSource] (repl.notify listeners (repl.mk-result [err])))
                 :pp #$1
                 :env (lume.clone _G)}))
 
diff --git a/editor/replview.fnl b/editor/replview.fnl
index 81cf65f..f7a2e6c 100644
--- a/editor/replview.fnl
+++ b/editor/replview.fnl
@@ -13,7 +13,6 @@
   (set self.cmd "")
   (set self.scrollheight math.huge)
   (set self.scrollable true)
-  (set self.pin-to-bottom-y self.scroll.to.y)
   (self.conn:listen self))
 
 (fn ReplView.try_close [self do_close]
diff --git a/lib/util.fnl b/lib/util.fnl
index 4750016..0e87065 100644
--- a/lib/util.fnl
+++ b/lib/util.fnl
@@ -57,7 +57,7 @@
   (local tbl {})
   (fn find-table []
     (let [loaded-pkg (. package.loaded modname)]
-      (if (= (type loaded-pkg) :table) loaded-pkg) tbl))
+      (if (= (type loaded-pkg) :table) loaded-pkg tbl)))
   (setmetatable {:hot tbl} {
     :__index (fn [_ key] (. (find-table) key))
     :__newindex (fn [_ key val] (tset (find-table) key val))
diff --git a/todo.txt b/todo.txt
index 3d4fd56..ca9c464 100644
--- a/todo.txt
+++ b/todo.txt
@@ -1,6 +1,8 @@
 TODO:
 * tile editor (geometric shapes for now?)
 
-Repl-y thing:
-appends objects to a list (inspectable?)
+REIL:
+* history navigation
+* paren matching (minibuffer?)
+* edit table values inline