From 9fe97dc855d6c1e8302c38a19311f5da3b6d682a Mon Sep 17 00:00:00 2001
From: Christopher Jeffrey <chjjeffrey@gmail.com>
Date: Fri, 1 Jul 2016 06:03:48 -0700
Subject: [PATCH] script: fromOptions.

---
 lib/bcoin/script.js | 57 +++++++++++++++++++++------------------------
 1 file changed, 27 insertions(+), 30 deletions(-)

diff --git a/lib/bcoin/script.js b/lib/bcoin/script.js
index fe5d20a0..234aa306 100644
--- a/lib/bcoin/script.js
+++ b/lib/bcoin/script.js
@@ -56,17 +56,17 @@ Witness.prototype.__defineSetter__('length', function(length) {
  */
 
 Witness.prototype.fromOptions = function fromOptions(options) {
-  var items = options.items;
+  var items;
+
+  assert(options, 'Witness data is required.');
+
+  items = options.items;
 
   if (!items)
     items = options;
 
-  assert(Array.isArray(items));
-
-  // Duplicate:
-  // items = items.slice();
-
-  this.items = items;
+  if (items)
+    this.fromArray(items);
 
   return this;
 };
@@ -1150,34 +1150,28 @@ Script.prototype.__defineSetter__('length', function(length) {
  */
 
 Script.prototype.fromOptions = function fromOptions(options) {
-  var code, raw;
+  assert(options, 'Script data is required.');
 
-  if (Buffer.isBuffer(options)) {
-    raw = options;
-  } else if (Array.isArray(options)) {
-    code = options;
-  } else {
-    code = options.code;
-    raw = options.raw;
+  if (Buffer.isBuffer(options))
+    return this.fromRaw(options);
+
+  if (Array.isArray(options))
+    return this.fromArray(options);
+
+  if (options.raw) {
+    if (!options.code)
+      return this.fromRaw(options.raw);
+    assert(Buffer.isBuffer(options.raw));
+    this.raw = options.raw;
   }
 
-  if (code) {
-    code = Script.parseArray(code);
-    // Duplicate:
-    // code = code.slice();
+  if (options.code) {
+    if (!options.raw)
+      return this.fromArray(options.code);
+    assert(Array.isArray(options.code));
+    this.code = options.code;
   }
 
-  if (!raw)
-    raw = Script.encode(code);
-  else if (!code)
-    code = Script.decode(raw);
-
-  assert(Array.isArray(code));
-  assert(Buffer.isBuffer(raw));
-
-  this.raw = raw;
-  this.code = code;
-
   return this;
 };
 
@@ -4553,6 +4547,9 @@ Script.parseArray = function parseArray(code) {
 
   assert(Array.isArray(code));
 
+  if (code.length === 0)
+    return code;
+
   if (code[0] instanceof Opcode)
     return code;