From b89a7ee8b956c96a1dcee995ea840feddc5d4b27 Mon Sep 17 00:00:00 2001
From: Pierre Frisch
Date: Thu, 22 Dec 2011 07:25:50 -0800
Subject: First commit of Ninja to ninja-internal

Signed-off-by: Valerio Virgillito <rmwh84@motorola.com>
---
 node_modules/montage/core/bitfield.js | 199 ++++++++++++++++++++++++++++++++++
 1 file changed, 199 insertions(+)
 create mode 100755 node_modules/montage/core/bitfield.js

(limited to 'node_modules/montage/core/bitfield.js')

diff --git a/node_modules/montage/core/bitfield.js b/node_modules/montage/core/bitfield.js
new file mode 100755
index 00000000..2c274d3c
--- /dev/null
+++ b/node_modules/montage/core/bitfield.js
@@ -0,0 +1,199 @@
+/* <copyright>
+ This file contains proprietary software owned by Motorola Mobility, Inc.<br/>
+ No rights, expressed or implied, whatsoever to this software are provided by Motorola Mobility, Inc. hereunder.<br/>
+ (c) Copyright 2011 Motorola Mobility, Inc.  All Rights Reserved.
+ </copyright> */
+/**
+ Defines the BitField class, that compactly stores multiple values as a short series of bits.
+ @module montage/core/bitfield
+ @requires montage/core/core
+ */
+
+var Montage = require("montage").Montage;
+
+
+/**
+ The BitField object compactly stores multiple values as a short series of bits. This implementation is limited to 32 fields.
+ @class module:montage/core/bitfield.BitField
+ @classdesc Compactly stores multiple values as a short series of bits.
+ @extends module:montage/core/core.Montage
+ */
+var BitField = exports.BitField = Montage.create(Montage, /** @lends module:montage/core/bitfield.BitField# */ {
+
+    /**
+     Creates a new BitField object containing the fields provided in the propertyDescriptor parameter.
+     @function
+     @param {Object} propertyDescriptor An object containing one or more property name/value pairs. Each pair is added to the new BitField.
+     @returns {Object} A new BitField object that contains fields described by the property descriptor.
+     @example var bitField = BitField.create();
+     bitField = BitField.create().initWithDescriptor({
+     likes_golf: {
+     value: false
+     },
+     likes_basketball: {
+     value: true
+     },
+     likes_baseball: {
+     value: false
+     },
+     });
+     */
+    initWithDescriptor: {
+        enumerable: false,
+        value: function(propertyDescriptor) {
+            var fieldName;
+            this.reset();
+            for (fieldName in propertyDescriptor) {
+                this.addField(fieldName, propertyDescriptor[fieldName].value);
+            }
+            return this;
+        }
+    },
+
+    /**
+     Adds a new field to a BitField instance.
+     @function
+     @param {String} aFieldName The name of the field to add.
+     @param {Mixed} defaultValue The new field's default value.
+     */
+    addField: {
+        enumerable: false,
+        value: function(aFieldName, defaultValue) {
+            if (aFieldName in this) {
+                return;
+            }
+            if (this._fieldCount >= 32) {
+                throw "BitField 32 fields limit reached.";
+            }
+            //We try to recycle slots as limited to 32bits
+            this._trueValue += (this._fields[aFieldName] = this._constantsToReuse.length ? this._constantsToReuse.shift() : (1 << this._fieldCount));
+            Montage.defineProperty(this, aFieldName, {
+                enumerable: true,
+                get: function() {
+                    return (this._value === this._trueValue);
+                },
+                set: function(value) {
+                    value ? (this._value |= this._fields[aFieldName]) : (this._value &= ~ (this._fields[aFieldName]));
+                    if (this.value) {
+                        this.callDelegateMethod();
+                    }
+                }
+            });
+            this._fieldCount++;
+            if (!! defaultValue) {
+                this[aFieldName] = true;
+            }
+        }
+    },
+
+    /**
+     @private
+     */
+    _constantsToReuse: {
+        enumerable: false,
+        value: []
+    },
+
+    /**
+     Removes a field from the bitfield.
+     @function
+     @param {String} aFieldName The name of the field to remove.
+     */
+    removeField: {
+        enumerable: false,
+        value: function(aFieldName) {
+            delete this[aFieldName];
+            this._constantsToReuse.push(this._fields[aFieldName]);
+            this._trueValue -= this._fields[aFieldName];
+            delete this._fields[aFieldName];
+        }
+    },
+
+    /**
+     The BitField object's delegate.
+     @type {Property}
+     @default null
+     */
+    delegate: {
+        enumerable: false,
+        value: null
+    },
+
+    /**
+     @function
+     @returns Nothing
+     */
+    callDelegateMethod: {
+        value: function() {
+            var delegateMethod;
+            if (this.delegate && typeof (delegateMethod = this.delegate.bitFieldDidBecomeTrue) === "function") {
+                delegateMethod.call(this.delegate, this);
+            }
+        },
+        enumerable: false
+    },
+/**
+        @type {Function}
+        @default {Number} 0
+    */
+    value: {
+        enumerable: false,
+        get: function() {
+            return (this._value === this._trueValue);
+        }
+    },
+
+    /**
+     @private
+     */
+    _fieldCount: {
+        enumerable: false,
+        value: 0
+    },
+/**
+  @private
+*/
+    _value: {
+        enumerable: false,
+        value: 0
+    },
+/**
+  @private
+*/
+    _trueValue: {
+        enumerable: false,
+        value: 0
+    },
+/**
+    @function
+    */
+    reset: {
+        enumerable: false,
+        value: function() {
+            this._value = 0x0;
+        }
+    },
+/**
+  @private
+*/
+    _fields: {
+        enumerable: false,
+        value: {}
+    },
+/**
+    @function
+    @returns result
+    */
+    toString: {
+        value: function() {
+            var fieldNames = this._fields,
+                i,
+                iField,
+                result = "";
+            for (i = 0; (iField = fieldNames[i]); i++) {
+                result += iField + "[" + (this._value & fieldNames[iField]) + "], ";
+            }
+            return result;
+        }
+    }
+});
-- 
cgit v1.2.3