Add Multiblock model, parser, and tests.

src/coffee/models/multiblock.coffee

@@ -0,0 +1,75 @@
+###
+Crafting Guide - multiblock.coffee
+
+Copyright (c) 2014-2015 by Redwood Labs
+All rights reserved.
+###
+
+BaseModel       = require './base_model'
+SimpleInventory = require './simple_inventory'
+
+########################################################################################################################
+
+module.exports = class Multiblock extends BaseModel
+
+    constructor: (attributes={}, options={})->
+        if not attributes.input? then throw new Error 'attributes.input is required'
+        if not attributes.layers? then throw new Error 'attributes.layers is required'
+        if attributes.layers.length < 1 then throw new Error 'attributes.layers.length must be >= 1'
+        super attributes, options
+
+        @_analyzePattern()
+
+    # Public Methods ###############################################################################
+
+    getStackAt: (x, y, z)->
+        value = @_stackCache[y]?[z]?[x]
+        return null if value is undefined
+        return value
+
+    # Property Methods #############################################################################
+
+    Object.defineProperties @prototype,
+        depth:
+            get: -> @_depth
+
+        height:
+            get: -> @_height
+
+        width:
+            get: -> @_width
+
+    # Private Methods ##############################################################################
+
+    _analyzeLayer: (layer, stackCacheLayer)->
+        rows = layer.split ' '
+        @_depth = Math.max @_depth, rows.length
+
+        for row in rows
+            @_width = Math.max @_width, row.length
+            stackCacheRow = []
+            stackCacheLayer.push stackCacheRow
+            @_analyzeRow row, stackCacheRow
+
+    _analyzePattern: ->
+        @_depth = @_height = @_width = 0
+        @_inventory = new SimpleInventory
+        @_stackCache = []
+
+        for layer in @layers
+            stackCacheLayer = []
+            @_stackCache.push stackCacheLayer
+            @_analyzeLayer layer, stackCacheLayer
+
+        @_height = @layers.length
+
+    _analyzeRow: (row, stackCacheRow)->
+        for cell, x in row.split ''
+            index = parseInt cell
+            stack = null
+
+            if not _.isNaN index
+                stack = @input[index]
+                @_inventory.add stack.itemSlug, stack.quantity
+
+            stackCacheRow.push stack

src/coffee/models/parser_versions/mod_version_parser_v1.coffee

@@ -5,13 +5,14 @@ Copyright (c) 2014-2015 by Redwood Labs
 All rights reserved.
 ###
 
+_                        = require 'underscore'
 CommandParserVersionBase = require './command_parser_version_base'
 Item                     = require '../item'
 ItemSlug                 = require '../item_slug'
 ModVersion               = require '../mod_version'
+Multiblock               = require '../multiblock'
 Recipe                   = require '../recipe'
 Stack                    = require '../simple_stack'
-_                        = require 'underscore'
 {StringBuilder}          = require 'crafting-guide-common'
 
 ########################################################################################################################
@@ -70,12 +71,29 @@ module.exports = class ModVersionParserV1 extends CommandParserVersionBase
 
         @_recipeData.ignoreDuringCrafting = (value is 'yes')
 
-    _command_input: (inputNames...)->
-        if not @_recipeData? then throw new Error 'cannot declare "input" before "recipe"'
-        if @_recipeData.input.length isnt 0 then throw new Error 'duplicate declaration of "input"'
+    _command_input: (stackDescriptions...)->
+        activeData = if @_recipeData? then @_recipeData else @_multiblockData
 
-        for name in inputNames
-            @_recipeData.input.push @_parseStack name
+        if not activeData? then throw new Error 'cannot declare "input" before "recipe" or "multiblock"'
+        if activeData.input.length isnt 0 then throw new Error 'duplicate declaration of "input"'
+
+        for stackDescription in stackDescriptions
+            activeData.input.push @_parseStack stackDescription
+
+    _command_layer: (layerText)->
+        if not @_multiblockData? then throw new Error 'cannot declare "layer" before "multiblock"'
+        if not layerText? then throw new Error 'cannot have an empty layer'
+        if layerText.length is 0 then throw new Error 'cannot have an empty layer'
+
+        @_multiblockData.layers.push layerText
+
+    _command_multiblock: ->
+        if not @_itemData? then throw new Error 'cannot declare "multiblock" before "item"'
+        if @_itemData.multiblockData? then throw new Error 'duplicate declaration of "multiblock"'
+
+        @_recipeData = null
+        @_multiblockData = input:[], layers:[], line:@_lineNumber
+        @_itemData.multiblockData = @_multiblockData
 
     _command_onlyIf: (condition)->
         words = condition.split ' '
@@ -112,6 +130,7 @@ module.exports = class ModVersionParserV1 extends CommandParserVersionBase
     _command_recipe: ->
         if not @_itemData? then throw new Error 'cannot delcare "recipe" before "item"'
 
+        @_multiblockData = null
         @_recipeData = line:@_lineNumber, input:[], output:[{quantity:1, name:@_itemData.name}], tools:[]
         @_itemData.recipes ?= []
         @_itemData.recipes.push @_recipeData
@@ -171,11 +190,23 @@ module.exports = class ModVersionParserV1 extends CommandParserVersionBase
             itemData.slug = ItemSlug.slugify itemData.name
             modVersion.registerName itemData.slug, itemData.name
 
+        if itemData.multiblockData
+            item.multiblock = @_handleErrors @_buildMultiblock, modVersion, item, itemData.multiblockData
+
         for recipeData in itemData.recipes
             @_handleErrors @_buildRecipe, modVersion, itemData, recipeData
 
         return item
 
+    _buildMultiblock: (modVersion, item, multiblockData)->
+        @_lineNumber = multiblockData.line
+        if multiblockData.layers.length is 0 then throw new Error '"multiblock" requires at least one "layer"'
+        if multiblockData.input.length is 0 then throw new Error '"multiblock" requires at least one "input"'
+
+        input = @_buildStackList modVersion, multiblockData.input
+        multiblock = new Multiblock input:input, layers:multiblockData.layers
+        return multiblock
+
     _buildRecipe: (modVersion, itemData, recipeData)->
         @_lineNumber = recipeData.line
         if recipeData.input.length is 0 then throw new Error 'the "input" declaration is required'