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1 files changed, 191 insertions, 0 deletions

diff --git a/node_modules/clean-css/lib/optimizer/wrap-for-optimizing.js b/node_modules/clean-css/lib/optimizer/wrap-for-optimizing.js
new file mode 100644
index 00000000..c516fbc4
--- /dev/null
+++ b/node_modules/clean-css/lib/optimizer/wrap-for-optimizing.js
@@ -0,0 +1,191 @@
+var Hack = require('./hack');
+
+var Marker = require('../tokenizer/marker');
+var Token = require('../tokenizer/token');
+
+var Match = {
+  ASTERISK: '*',
+  BACKSLASH: '\\',
+  BANG: '!',
+  BANG_SUFFIX_PATTERN: /!\w+$/,
+  IMPORTANT_TOKEN: '!important',
+  IMPORTANT_TOKEN_PATTERN: new RegExp('!important$', 'i'),
+  IMPORTANT_WORD: 'important',
+  IMPORTANT_WORD_PATTERN: new RegExp('important$', 'i'),
+  SUFFIX_BANG_PATTERN: /!$/,
+  UNDERSCORE: '_',
+  VARIABLE_REFERENCE_PATTERN: /var\(--.+\)$/
+};
+
+function wrapAll(properties, includeVariable, skipProperties) {
+  var wrapped = [];
+  var single;
+  var property;
+  var i;
+
+  for (i = properties.length - 1; i >= 0; i--) {
+    property = properties[i];
+
+    if (property[0] != Token.PROPERTY) {
+      continue;
+    }
+
+    if (!includeVariable && someVariableReferences(property)) {
+      continue;
+    }
+
+    if (skipProperties && skipProperties.indexOf(property[1][1]) > -1) {
+      continue;
+    }
+
+    single = wrapSingle(property);
+    single.all = properties;
+    single.position = i;
+    wrapped.unshift(single);
+  }
+
+  return wrapped;
+}
+
+function someVariableReferences(property) {
+  var i, l;
+  var value;
+
+  // skipping `property` and property name tokens
+  for (i = 2, l = property.length; i < l; i++) {
+    value = property[i];
+
+    if (value[0] != Token.PROPERTY_VALUE) {
+      continue;
+    }
+
+    if (isVariableReference(value[1])) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+function isVariableReference(value) {
+  return Match.VARIABLE_REFERENCE_PATTERN.test(value);
+}
+
+function isMultiplex(property) {
+  var value;
+  var i, l;
+
+  for (i = 3, l = property.length; i < l; i++) {
+    value = property[i];
+
+    if (value[0] == Token.PROPERTY_VALUE && (value[1] == Marker.COMMA || value[1] == Marker.FORWARD_SLASH)) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+function hackFrom(property) {
+  var match = false;
+  var name = property[1][1];
+  var lastValue = property[property.length - 1];
+
+  if (name[0] == Match.UNDERSCORE) {
+    match = [Hack.UNDERSCORE];
+  } else if (name[0] == Match.ASTERISK) {
+    match = [Hack.ASTERISK];
+  } else if (lastValue[1][0] == Match.BANG && !lastValue[1].match(Match.IMPORTANT_WORD_PATTERN)) {
+    match = [Hack.BANG];
+  } else if (lastValue[1].indexOf(Match.BANG) > 0 && !lastValue[1].match(Match.IMPORTANT_WORD_PATTERN) && Match.BANG_SUFFIX_PATTERN.test(lastValue[1])) {
+    match = [Hack.BANG];
+  } else if (lastValue[1].indexOf(Match.BACKSLASH) > 0 && lastValue[1].indexOf(Match.BACKSLASH) == lastValue[1].length - Match.BACKSLASH.length - 1) {
+    match = [Hack.BACKSLASH, lastValue[1].substring(lastValue[1].indexOf(Match.BACKSLASH) + 1)];
+  } else if (lastValue[1].indexOf(Match.BACKSLASH) === 0 && lastValue[1].length == 2) {
+    match = [Hack.BACKSLASH, lastValue[1].substring(1)];
+  }
+
+  return match;
+}
+
+function isImportant(property) {
+  if (property.length < 3)
+    return false;
+
+  var lastValue = property[property.length - 1];
+  if (Match.IMPORTANT_TOKEN_PATTERN.test(lastValue[1])) {
+    return true;
+  } else if (Match.IMPORTANT_WORD_PATTERN.test(lastValue[1]) && Match.SUFFIX_BANG_PATTERN.test(property[property.length - 2][1])) {
+    return true;
+  }
+
+  return false;
+}
+
+function stripImportant(property) {
+  var lastValue = property[property.length - 1];
+  var oneButLastValue = property[property.length - 2];
+
+  if (Match.IMPORTANT_TOKEN_PATTERN.test(lastValue[1])) {
+    lastValue[1] = lastValue[1].replace(Match.IMPORTANT_TOKEN_PATTERN, '');
+  } else {
+    lastValue[1] = lastValue[1].replace(Match.IMPORTANT_WORD_PATTERN, '');
+    oneButLastValue[1] = oneButLastValue[1].replace(Match.SUFFIX_BANG_PATTERN, '');
+  }
+
+  if (lastValue[1].length === 0) {
+    property.pop();
+  }
+
+  if (oneButLastValue[1].length === 0) {
+    property.pop();
+  }
+}
+
+function stripPrefixHack(property) {
+  property[1][1] = property[1][1].substring(1);
+}
+
+function stripSuffixHack(property, hackFrom) {
+  var lastValue = property[property.length - 1];
+  lastValue[1] = lastValue[1]
+    .substring(0, lastValue[1].indexOf(hackFrom[0] == Hack.BACKSLASH ? Match.BACKSLASH : Match.BANG))
+    .trim();
+
+  if (lastValue[1].length === 0) {
+    property.pop();
+  }
+}
+
+function wrapSingle(property) {
+  var importantProperty = isImportant(property);
+  if (importantProperty) {
+    stripImportant(property);
+  }
+
+  var whichHack = hackFrom(property);
+  if (whichHack[0] == Hack.ASTERISK || whichHack[0] == Hack.UNDERSCORE) {
+    stripPrefixHack(property);
+  } else if (whichHack[0] == Hack.BACKSLASH || whichHack[0] == Hack.BANG) {
+    stripSuffixHack(property, whichHack);
+  }
+
+  return {
+    block: property[2] && property[2][0] == Token.PROPERTY_BLOCK,
+    components: [],
+    dirty: false,
+    hack: whichHack,
+    important: importantProperty,
+    name: property[1][1],
+    multiplex: property.length > 3 ? isMultiplex(property) : false,
+    position: 0,
+    shorthand: false,
+    unused: false,
+    value: property.slice(2)
+  };
+}
+
+module.exports = {
+  all: wrapAll,
+  single: wrapSingle
+};