larry babby and threejs for glsl

webGl/my-threejs-test/node_modules/glslify-bundle/lib/clean-suffixes.js

@@ -0,0 +1,48 @@
+module.exports = clean
+
+var suffix = /^([^_]+)_(\d{4,})$/
+
+function clean (tokens) {
+  var blacklist = {}
+  var index = {}
+
+  for (var i = 0; i < tokens.length; i++) {
+    var token = tokens[i]
+    if (token.type !== 'ident') continue
+    var match = token.data.match(suffix)
+    if (!match) {
+      blacklist[token.data] = true
+      continue
+    }
+
+    var pre = match[1]
+    var suf = match[2]
+
+    index[pre] = index[pre] || {}
+    index[pre][suf] = index[pre][suf] || []
+    index[pre][suf].push(token)
+  }
+
+  Object.keys(index).forEach(function (prefix) {
+    var suffixes = Object.keys(index[prefix])
+    if (suffixes.length === 1 && !blacklist[prefix]) {
+      var tokens = index[prefix][suffixes[0]]
+      for (var i = 0; i < tokens.length; i++) {
+        tokens[i].data = prefix
+      }
+
+      return
+    }
+
+    suffixes.forEach(function (suffix, i) {
+      var token = index[prefix][suffix]
+      var rename = prefix + '_' + i
+      if (blacklist[rename]) return
+      for (var j = 0; j < token.length; j++) {
+        token[j].data = rename
+      }
+    })
+  })
+
+  return tokens
+}