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Store built parser as class variable

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This commit is contained in:
Corey Johnson & Kevin Sawicki
2013-01-17 13:33:40 -08:00
committed by Kevin Sawicki
parent 97e808620e
commit 9ff0776fbf
1 changed files with 5 additions and 2 deletions
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7
src/app/binding-set.coffee
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@@ -7,13 +7,16 @@ PEG = require 'pegjs'
module.exports =
class BindingSet
@parser: null
selector: null
commandsByKeystrokes: null
commandForEvent: null
parser: null
constructor: (@selector, commandsByKeystrokes, @index) ->
@parser = PEG.buildParser(fs.read(require.resolve 'keystroke-pattern.pegjs'))
BindingSet.parser ?= PEG.buildParser(fs.read(require.resolve 'keystroke-pattern.pegjs'))
@specificity = Specificity(@selector)
@commandsByKeystrokes = @normalizeCommandsByKeystrokes(commandsByKeystrokes)
@@ -42,7 +45,7 @@ class BindingSet
normalizedKeystrokes.join(' ')
normalizeKeystroke: (keystroke) ->
keys = @parser.parse(keystroke)
keys = BindingSet.parser.parse(keystroke)
modifiers = keys[0...-1]
modifiers.sort()
[modifiers..., _.last(keys)].join('-')