1 files changed, 219 insertions, 0 deletions
diff --git a/node_modules/clean-css/lib/writer/helpers.js b/node_modules/clean-css/lib/writer/helpers.js
new file mode 100644
index 000000000..0b8999e95
--- /dev/null
+++ b/node_modules/clean-css/lib/writer/helpers.js
@@ -0,0 +1,219 @@
+var lineBreak = require('os').EOL;
+var emptyCharacter = '';
+
+var Breaks = require('../options/format').Breaks;
+var Spaces = require('../options/format').Spaces;
+
+var Marker = require('../tokenizer/marker');
+var Token = require('../tokenizer/token');
+
+function supportsAfterClosingBrace(token) {
+  return token[1][1] == 'background' || token[1][1] == 'transform' || token[1][1] == 'src';
+}
+
+function afterClosingBrace(token, valueIndex) {
+  return token[valueIndex][1][token[valueIndex][1].length - 1] == Marker.CLOSE_ROUND_BRACKET;
+}
+
+function afterComma(token, valueIndex) {
+  return token[valueIndex][1] == Marker.COMMA;
+}
+
+function afterSlash(token, valueIndex) {
+  return token[valueIndex][1] == Marker.FORWARD_SLASH;
+}
+
+function beforeComma(token, valueIndex) {
+  return token[valueIndex + 1] && token[valueIndex + 1][1] == Marker.COMMA;
+}
+
+function beforeSlash(token, valueIndex) {
+  return token[valueIndex + 1] && token[valueIndex + 1][1] == Marker.FORWARD_SLASH;
+}
+
+function inFilter(token) {
+  return token[1][1] == 'filter' || token[1][1] == '-ms-filter';
+}
+
+function disallowsSpace(context, token, valueIndex) {
+  return !context.spaceAfterClosingBrace && supportsAfterClosingBrace(token) && afterClosingBrace(token, valueIndex) ||
+    beforeSlash(token, valueIndex) ||
+    afterSlash(token, valueIndex) ||
+    beforeComma(token, valueIndex) ||
+    afterComma(token, valueIndex);
+}
+
+function rules(context, tokens) {
+  var store = context.store;
+
+  for (var i = 0, l = tokens.length; i < l; i++) {
+    store(context, tokens[i]);
+
+    if (i < l - 1) {
+      store(context, comma(context));
+    }
+  }
+}
+
+function body(context, tokens) {
+  var lastPropertyAt = lastPropertyIndex(tokens);
+
+  for (var i = 0, l = tokens.length; i < l; i++) {
+    property(context, tokens, i, lastPropertyAt);
+  }
+}
+
+function lastPropertyIndex(tokens) {
+  var index = tokens.length - 1;
+
+  for (; index >= 0; index--) {
+    if (tokens[index][0] != Token.COMMENT) {
+      break;
+    }
+  }
+
+  return index;
+}
+
+function property(context, tokens, position, lastPropertyAt) {
+  var store = context.store;
+  var token = tokens[position];
+  var isPropertyBlock = token[2][0] == Token.PROPERTY_BLOCK;
+  var needsSemicolon = position < lastPropertyAt || isPropertyBlock;
+  var isLast = position === lastPropertyAt;
+
+  switch (token[0]) {
+    case Token.AT_RULE:
+      store(context, token);
+      store(context, position < lastPropertyAt ? semicolon(context, Breaks.AfterProperty, false) : emptyCharacter);
+      break;
+    case Token.COMMENT:
+      store(context, token);
+      break;
+    case Token.PROPERTY:
+      store(context, token[1]);
+      store(context, colon(context));
+      value(context, token);
+      store(context, needsSemicolon ? semicolon(context, Breaks.AfterProperty, isLast) : emptyCharacter);
+  }
+}
+
+function value(context, token) {
+  var store = context.store;
+  var j, m;
+
+  if (token[2][0] == Token.PROPERTY_BLOCK) {
+    store(context, openBrace(context, Breaks.AfterBlockBegins, false));
+    body(context, token[2][1]);
+    store(context, closeBrace(context, Breaks.AfterBlockEnds, false, true));
+  } else {
+    for (j = 2, m = token.length; j < m; j++) {
+      store(context, token[j]);
+
+      if (j < m - 1 && (inFilter(token) || !disallowsSpace(context, token, j))) {
+        store(context, Marker.SPACE);
+      }
+    }
+  }
+}
+
+function allowsBreak(context, where) {
+  return context.format && context.format.breaks[where];
+}
+
+function allowsSpace(context, where) {
+  return context.format && context.format.spaces[where];
+}
+
+function openBrace(context, where, needsPrefixSpace) {
+  if (context.format) {
+    context.indentBy += context.format.indentBy;
+    context.indentWith = context.format.indentWith.repeat(context.indentBy);
+    return (needsPrefixSpace && allowsSpace(context, Spaces.BeforeBlockBegins) ? Marker.SPACE : emptyCharacter) +
+      Marker.OPEN_CURLY_BRACKET +
+      (allowsBreak(context, where) ? lineBreak : emptyCharacter) +
+      context.indentWith;
+  } else {
+    return Marker.OPEN_CURLY_BRACKET;
+  }
+}
+
+function closeBrace(context, where, beforeBlockEnd, isLast) {
+  if (context.format) {
+    context.indentBy -= context.format.indentBy;
+    context.indentWith = context.format.indentWith.repeat(context.indentBy);
+    return (allowsBreak(context, Breaks.AfterProperty) || beforeBlockEnd && allowsBreak(context, Breaks.BeforeBlockEnds) ? lineBreak : emptyCharacter) +
+      context.indentWith +
+      Marker.CLOSE_CURLY_BRACKET +
+      (isLast ? emptyCharacter : (allowsBreak(context, where) ? lineBreak : emptyCharacter) + context.indentWith);
+  } else {
+    return Marker.CLOSE_CURLY_BRACKET;
+  }
+}
+
+function colon(context) {
+  return context.format ?
+    Marker.COLON + (allowsSpace(context, Spaces.BeforeValue) ? Marker.SPACE : emptyCharacter) :
+    Marker.COLON;
+}
+
+function semicolon(context, where, isLast) {
+  return context.format ?
+    Marker.SEMICOLON + (isLast || !allowsBreak(context, where) ? emptyCharacter : lineBreak + context.indentWith) :
+    Marker.SEMICOLON;
+}
+
+function comma(context) {
+  return context.format ?
+    Marker.COMMA + (allowsBreak(context, Breaks.BetweenSelectors) ? lineBreak : emptyCharacter) + context.indentWith :
+    Marker.COMMA;
+}
+
+function all(context, tokens) {
+  var store = context.store;
+  var token;
+  var isLast;
+  var i, l;
+
+  for (i = 0, l = tokens.length; i < l; i++) {
+    token = tokens[i];
+    isLast = i == l - 1;
+
+    switch (token[0]) {
+      case Token.AT_RULE:
+        store(context, token);
+        store(context, semicolon(context, Breaks.AfterAtRule, isLast));
+        break;
+      case Token.AT_RULE_BLOCK:
+        rules(context, token[1]);
+        store(context, openBrace(context, Breaks.AfterRuleBegins, true));
+        body(context, token[2]);
+        store(context, closeBrace(context, Breaks.AfterRuleEnds, false, isLast));
+        break;
+      case Token.NESTED_BLOCK:
+        rules(context, token[1]);
+        store(context, openBrace(context, Breaks.AfterBlockBegins, true));
+        all(context, token[2]);
+        store(context, closeBrace(context, Breaks.AfterBlockEnds, true, isLast));
+        break;
+      case Token.COMMENT:
+        store(context, token);
+        store(context, allowsBreak(context, Breaks.AfterComment) ? lineBreak : emptyCharacter);
+        break;
+      case Token.RULE:
+        rules(context, token[1]);
+        store(context, openBrace(context, Breaks.AfterRuleBegins, true));
+        body(context, token[2]);
+        store(context, closeBrace(context, Breaks.AfterRuleEnds, false, isLast));
+        break;
+    }
+  }
+}
+
+module.exports = {
+  all: all,
+  body: body,
+  property: property,
+  rules: rules,
+  value: value
+};