From 399b297b01fe363c6ea8c2108de5df82c2ba3921 Mon Sep 17 00:00:00 2001
From: Frank Duncan <frank@kank.net>
Date: Sun, 24 Apr 2016 12:21:32 -0500
Subject: [PATCH] Prims - Implement colors, nobody

---
 src/main/nvm/nvm.lisp     | 31 +++++++++++++++++++++++++++++++
 src/main/package.lisp     |  1 +
 src/main/transpile.lisp   | 19 ++++++++++++++++---
 src/test/simpletests.lisp |  6 ++++++
 4 files changed, 54 insertions(+), 3 deletions(-)

diff --git a/src/main/nvm/nvm.lisp b/src/main/nvm/nvm.lisp
index c5f0865..47f5467 100644
--- a/src/main/nvm/nvm.lisp
+++ b/src/main/nvm/nvm.lisp
@@ -17,6 +17,37 @@ DESCRIPTION:
   See http://ccl.northwestern.edu/netlogo/docs/dictionary.html#show"
  (format t "Showing: ~A~%" (dump-object value)))
 
+(defun lookup-color (color)
+ "LOOKUP-COLOR COLOR => COLOR-NUMBER
+
+ARGUMENTS AND VALUES:
+
+  COLOR: a symbol representing a color
+  COLOR-NUMBER: the NetLogo color integer
+
+DESCRIPTION:
+
+  Returns the number used to represent colors in NetLogo.
+
+  See http://ccl.northwestern.edu/netlogo/docs/dictionary.html#Constants"
+ (case color
+  (:black 0d0)
+  (:gray 5d0)
+  (:white 9.9d0)
+  (:red 15d0)
+  (:orange 25d0)
+  (:brown 35d0)
+  (:yellow 45d0)
+  (:green 55d0)
+  (:lime 65d0)
+  (:turquoise 75d0)
+  (:cyan 85d0)
+  (:sky 95d0)
+  (:blue 105d0)
+  (:violet 115d0)
+  (:magenta 125d0)
+  (:pink 135d0)))
+
 (defun create-turtle ()
  (setf
   *turtles*
diff --git a/src/main/package.lisp b/src/main/package.lisp
index 392d92b..36fbafa 100644
--- a/src/main/package.lisp
+++ b/src/main/package.lisp
@@ -70,6 +70,7 @@ into an ast that can be transpiled later."))
   #:create-turtles
   #:die
   #:forward
+  #:lookup-color
   #:random-float
   #:show
   #:turtles
diff --git a/src/main/transpile.lisp b/src/main/transpile.lisp
index 9b4b5ee..a45183b 100644
--- a/src/main/transpile.lisp
+++ b/src/main/transpile.lisp
@@ -10,9 +10,10 @@
 (defun is-command (prim) (eql :command (getf prim :type)))
 
 (defun find-prim (symb)
- (or
-  (find symb *prims* :key #'prim-name)
-  (find-prim (getf (find symb *prim-aliases* :key #'prim-name) :real-symb))))
+ (when symb
+  (or
+   (find symb *prims* :key #'prim-name)
+   (find-prim (getf (find symb *prim-aliases* :key #'prim-name) :real-symb)))))
 
 ; Let this grow, slowly but surely, eventually taking on calling context, etc.
 ; For now, it's just a
@@ -82,6 +83,9 @@ DESCRIPTION:
 (defmacro defsimpleprim (name type simple-func)
  `(defprim ,name ,type (lambda (&rest args) `(,',simple-func ,@args))))
 
+(defmacro defkeywordprim (name)
+ `(defprim ,name :reporter (lambda () ',name)))
+
 (defmacro defprim-alias (name real-symb)
  `(push (list :name ,name :real-symb ,real-symb) *prim-aliases*))
 
@@ -108,7 +112,16 @@ DESCRIPTION:
 
 (defprim-alias :if-else :ifelse)
 (defsimpleprim :lt :command clnl-nvm:turn-left)
+(defkeywordprim :nobody)
 (defsimpleprim :random-float :reporter clnl-nvm:random-float)
 (defsimpleprim :rt :command clnl-nvm:turn-right)
 (defsimpleprim :show :command clnl-nvm:show)
 (defsimpleprim :turtles :reporter clnl-nvm:turtles)
+
+; Colors
+(defmacro defcolorprim (color) `(defprim ,color :reporter (lambda () `(clnl-nvm:lookup-color ,,color))))
+(defcolorprim :black)
+(defcolorprim :blue)
+(defcolorprim :brown)
+(defcolorprim :green)
+(defcolorprim :white)
diff --git a/src/test/simpletests.lisp b/src/test/simpletests.lisp
index 119e12f..c2a11ba 100644
--- a/src/test/simpletests.lisp
+++ b/src/test/simpletests.lisp
@@ -131,3 +131,9 @@
 
 (defsimplecommandtest "ifelse 2" "ifelse 5 = 4 [ crt 10 ] [ crt 5 ] if-else 5 = 4 [ crt 10 ] [ crt 5 ]"
  "A925E39EC022967568D238D31F70F0A375024A89")
+
+(defsimplereportertest "colors 1" "green" "55"
+ "E1DE30F072D785E0D0B59F28B0F7853E3D3E0D8B")
+
+(defsimplereportertest "colors 2" "black" "0"
+ "E1DE30F072D785E0D0B59F28B0F7853E3D3E0D8B")
-- 
2.25.1