DevTools: [STRUCT] edit SASS through SourceMaps

Source/devtools/front_end/common/TextUtils.js

Index: Source/devtools/front_end/common/TextUtils.js
diff --git a/Source/devtools/front_end/common/TextUtils.js b/Source/devtools/front_end/common/TextUtils.js
index 2310478a50c4635b92e7d5122205c2b76a7f31ac..da8e953c471fb8671ec0b5f96c6cdcea99f134eb 100644
--- a/Source/devtools/front_end/common/TextUtils.js
+++ b/Source/devtools/front_end/common/TextUtils.js
@@ -239,3 +239,45 @@ WebInspector.TokenizerFactory.prototype = {
      */
     createTokenizer: function(mimeType) { }
 }
+
+/**
+ * @constructor
+ * @param {string} sourceURL
+ * @param {!WebInspector.TextRange} oldRange
+ * @param {string} oldText
+ * @param {string} newText
+ */
+WebInspector.SourceEdit = function(sourceURL, oldRange, oldText, newText)
+{
+    this.sourceURL = sourceURL;
+    this.oldRange = oldRange;
+    this.oldText = oldText;
+    this.newText = newText;
+}
+
+WebInspector.SourceEdit.prototype = {
+    /**
+     * @return {!WebInspector.TextRange}
+     */
+    newRange: function()
+    {
+        var endLine = this.oldRange.startLine;
+        var endColumn = this.oldRange.startColumn + this.newText.length;
+        var lineEndings = this.newText.lineEndings();
+        if (lineEndings.length > 1) {
+            endLine = this.oldRange.startLine + lineEndings.length - 1;
+            var len = lineEndings.length;
+            endColumn = lineEndings[len - 1] - lineEndings[len - 2] - 1;
+        }
+        return new WebInspector.TextRange(
+            this.oldRange.startLine,
+            this.oldRange.startColumn,
+            endLine,
+            endColumn);
+    },
+
+    applyToText: function(text)
+    {
+        return this.oldRange.replaceInText(text, this.newText);
+    },
+}