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🎨 adding support for style.constants

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This commit is contained in:
Michael Straßburger 2016-10-03 05:29:40 +02:00
parent afe7a53009
commit 89f4521251
1 changed files with 15 additions and 1 deletions
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16
src/Styler.coffee
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@ -19,6 +19,8 @@ module.exports = class Styler
json = JSON.parse fs.readFileSync(file).toString() json = JSON.parse fs.readFileSync(file).toString()
@styleName = json.name @styleName = json.name
@_replaceConstants json.constants, json.layers if json.constants
for style in json.layers for style in json.layers
continue if style.ref continue if style.ref
@ -37,7 +39,19 @@ module.exports = class Styler
if style.appliesTo(feature) and ((layer is "road") or (not style.minzoom) or style.minzoom <= zoom) if style.appliesTo(feature) and ((layer is "road") or (not style.minzoom) or style.minzoom <= zoom)
return style return style
false return false
_replaceConstants: (constants, tree) ->
for id, node of tree
switch typeof node
when 'object'
continue if node.constructor.name.match /Stream/
@_replaceConstants constants, node
when 'string'
if node.charAt(0) is '@'
tree[id] = constants[node]
null
_compileFilter: (filter) -> _compileFilter: (filter) ->
switch filter?[0] switch filter?[0]